From 70344fd04ba32e17a59c4abfefae866e823a735a Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Sun, 27 Sep 2026 23:06:09 +0200 Subject: [PATCH 01/11] Implement Vi app + update versions of all apps because of SDK changes --- Apps/Brainfuck/manifest.properties | 4 +- Apps/Breakout/manifest.properties | 4 +- Apps/Calculator/manifest.properties | 4 +- Apps/Diceware/manifest.properties | 4 +- Apps/Doom/manifest.properties | 4 +- Apps/EpubReader/manifest.properties | 4 +- Apps/EspNowBridge/manifest.properties | 4 +- Apps/GPIO/manifest.properties | 4 +- Apps/GraphicsDemo/manifest.properties | 4 +- Apps/HelloWorld/manifest.properties | 4 +- Apps/M5UnitTest/manifest.properties | 4 +- Apps/Magic8Ball/manifest.properties | 4 +- Apps/MediaKeys/manifest.properties | 4 +- Apps/MystifyDemo/manifest.properties | 4 +- Apps/SerialConsole/manifest.properties | 4 +- Apps/Snake/manifest.properties | 4 +- Apps/TamaTac/manifest.properties | 4 +- Apps/TodoList/manifest.properties | 4 +- Apps/TwoEleven/manifest.properties | 4 +- Apps/Vi/CMakeLists.txt | 13 + Apps/Vi/LICENSE | 348 ++ Apps/Vi/README.md | 34 + Apps/Vi/main/CMakeLists.txt | 11 + Apps/Vi/main/Include/libbb.h | 208 + Apps/Vi/main/Source/libbb.c | 406 ++ Apps/Vi/main/Source/main.c | 8 + Apps/Vi/main/Source/read_key.c | 307 ++ Apps/Vi/main/Source/vi.c | 5053 ++++++++++++++++++++++++ Apps/Vi/manifest.properties | 14 + tactility.py | 104 +- 30 files changed, 6490 insertions(+), 92 deletions(-) create mode 100644 Apps/Vi/CMakeLists.txt create mode 100644 Apps/Vi/LICENSE create mode 100644 Apps/Vi/README.md create mode 100644 Apps/Vi/main/CMakeLists.txt create mode 100644 Apps/Vi/main/Include/libbb.h create mode 100644 Apps/Vi/main/Source/libbb.c create mode 100644 Apps/Vi/main/Source/main.c create mode 100644 Apps/Vi/main/Source/read_key.c create mode 100644 Apps/Vi/main/Source/vi.c create mode 100644 Apps/Vi/manifest.properties diff --git a/Apps/Brainfuck/manifest.properties b/Apps/Brainfuck/manifest.properties index 14edb87..5187f61 100644 --- a/Apps/Brainfuck/manifest.properties +++ b/Apps/Brainfuck/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.brainfuck -version.name=0.14.0 -version.code=14 +version.name=0.15.0 +version.code=15 name=Brainfuck description=Brainfuck esoteric language interpreter app.0.id=tactility.brainfuck diff --git a/Apps/Breakout/manifest.properties b/Apps/Breakout/manifest.properties index 2fa72f7..6a102e5 100644 --- a/Apps/Breakout/manifest.properties +++ b/Apps/Breakout/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.breakout -version.name=0.17.0 -version.code=17 +version.name=0.18.0 +version.code=18 name=Breakout description=Classic brick-breaking arcade game app.0.id=tactility.breakout diff --git a/Apps/Calculator/manifest.properties b/Apps/Calculator/manifest.properties index 9a60de2..2894e48 100644 --- a/Apps/Calculator/manifest.properties +++ b/Apps/Calculator/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.calculator -version.name=0.15.0 -version.code=15 +version.name=0.16.0 +version.code=16 name=Calculator app.0.id=tactility.calculator app.0.name=Calculator diff --git a/Apps/Diceware/manifest.properties b/Apps/Diceware/manifest.properties index 28a8346..bd20ea5 100644 --- a/Apps/Diceware/manifest.properties +++ b/Apps/Diceware/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.diceware -version.name=0.17.0 -version.code=17 +version.name=0.18.0 +version.code=18 name=Diceware description=Password generator app.0.id=tactility.diceware diff --git a/Apps/Doom/manifest.properties b/Apps/Doom/manifest.properties index 97e6382..a7ed958 100644 --- a/Apps/Doom/manifest.properties +++ b/Apps/Doom/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32p4 id=tactility.doom -version.name=0.8.0 -version.code=8 +version.name=0.9.0 +version.code=9 name=Doom description=Classic DOOM. Tab5 only, keyboard required to play. app.0.id=tactility.doom diff --git a/Apps/EpubReader/manifest.properties b/Apps/EpubReader/manifest.properties index af6393c..fc8dd48 100644 --- a/Apps/EpubReader/manifest.properties +++ b/Apps/EpubReader/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32s3,esp32p4 id=tactility.epubreader -version.name=0.14.0 -version.code=14 +version.name=0.15.0 +version.code=15 name=ePub Reader description=ePub and text file reader. Requires PSRAM! app.0.id=tactility.epubreader diff --git a/Apps/EspNowBridge/manifest.properties b/Apps/EspNowBridge/manifest.properties index 3ecbdca..4c4e6d2 100644 --- a/Apps/EspNowBridge/manifest.properties +++ b/Apps/EspNowBridge/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32p4 id=tactility.espnowbridge -version.name=0.12.0 -version.code=12 +version.name=0.13.0 +version.code=13 name=ESP-NOW Bridge description=Companion app for updating P4 device C6 co-processor firmware to enable ESP-NOW bridge support. app.0.id=tactility.espnowbridge diff --git a/Apps/GPIO/manifest.properties b/Apps/GPIO/manifest.properties index a15f0f8..5523529 100644 --- a/Apps/GPIO/manifest.properties +++ b/Apps/GPIO/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.gpio -version.name=0.17.0 -version.code=17 +version.name=0.18.0 +version.code=18 name=GPIO description=Shows the live state of all GPIO pins app.0.id=tactility.gpio diff --git a/Apps/GraphicsDemo/manifest.properties b/Apps/GraphicsDemo/manifest.properties index 25721d6..77618aa 100644 --- a/Apps/GraphicsDemo/manifest.properties +++ b/Apps/GraphicsDemo/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.graphicsdemo -version.name=0.15.0 -version.code=15 +version.name=0.16.0 +version.code=16 name=Graphics Demo app.0.id=tactility.graphicsdemo app.0.name=Graphics Demo diff --git a/Apps/HelloWorld/manifest.properties b/Apps/HelloWorld/manifest.properties index 2be0194..e8b166b 100644 --- a/Apps/HelloWorld/manifest.properties +++ b/Apps/HelloWorld/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4,posix-x86_64 id=tactility.helloworld -version.name=0.15.0 -version.code=15 +version.name=0.16.0 +version.code=16 name=Hello World app.0.id=tactility.helloworld app.0.name=Hello World diff --git a/Apps/M5UnitTest/manifest.properties b/Apps/M5UnitTest/manifest.properties index 836f718..6f43ea1 100644 --- a/Apps/M5UnitTest/manifest.properties +++ b/Apps/M5UnitTest/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32s3,esp32p4 id=tactility.m5unittest -version.name=0.13.0 -version.code=13 +version.name=0.14.0 +version.code=14 name=M5 Unit Test app.0.id=tactility.m5unittest app.0.name=M5 Unit Test diff --git a/Apps/Magic8Ball/manifest.properties b/Apps/Magic8Ball/manifest.properties index dd04928..b818016 100644 --- a/Apps/Magic8Ball/manifest.properties +++ b/Apps/Magic8Ball/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.magic8ball -version.name=0.14.0 -version.code=14 +version.name=0.15.0 +version.code=15 name=Magic 8-Ball app.0.id=tactility.magic8ball app.0.name=Magic 8-Ball diff --git a/Apps/MediaKeys/manifest.properties b/Apps/MediaKeys/manifest.properties index 9a4c9d0..da7b86b 100644 --- a/Apps/MediaKeys/manifest.properties +++ b/Apps/MediaKeys/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32s3,esp32p4 id=tactility.mediakeys -version.name=0.15.0 -version.code=15 +version.name=0.16.0 +version.code=16 name=Media Keys description=Bluetooth media keys. Touch or Physical Keyboard control\nB - previous, P - play/pause, N - next, M - mute, D - volume down, U - volume up.\nQ or ESC to exit focus. app.0.id=tactility.mediakeys diff --git a/Apps/MystifyDemo/manifest.properties b/Apps/MystifyDemo/manifest.properties index dd322f9..827f35b 100644 --- a/Apps/MystifyDemo/manifest.properties +++ b/Apps/MystifyDemo/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.mystifydemo -version.name=0.16.0 -version.code=16 +version.name=0.17.0 +version.code=17 name=Mystify Demo description=A graphics demo that is inspired by a Windows 95 screensaver. app.0.id=tactility.mystifydemo diff --git a/Apps/SerialConsole/manifest.properties b/Apps/SerialConsole/manifest.properties index 5b45a69..45029e3 100644 --- a/Apps/SerialConsole/manifest.properties +++ b/Apps/SerialConsole/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.serialconsole -version.name=0.17.0 -version.code=17 +version.name=0.18.0 +version.code=18 name=Serial Console app.0.id=tactility.serialconsole app.0.name=Serial Console diff --git a/Apps/Snake/manifest.properties b/Apps/Snake/manifest.properties index 03d3737..828cc63 100644 --- a/Apps/Snake/manifest.properties +++ b/Apps/Snake/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.snake -version.name=0.18.0 -version.code=18 +version.name=0.19.0 +version.code=19 name=Snake description=Classic Snake game app.0.id=tactility.snake diff --git a/Apps/TamaTac/manifest.properties b/Apps/TamaTac/manifest.properties index 6907f2f..e96b108 100644 --- a/Apps/TamaTac/manifest.properties +++ b/Apps/TamaTac/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.tamatac -version.name=0.13.0 -version.code=13 +version.name=0.14.0 +version.code=14 name=TamaTac description=Virtual pet inspired by Tamagotchi. Only runs on devices with PSRAM. app.0.id=tactility.tamatac diff --git a/Apps/TodoList/manifest.properties b/Apps/TodoList/manifest.properties index 37f9940..e57cde6 100644 --- a/Apps/TodoList/manifest.properties +++ b/Apps/TodoList/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.todolist -version.name=0.16.0 -version.code=16 +version.name=0.17.0 +version.code=17 name=Todo List description=Simple task list manager app.0.id=tactility.todolist diff --git a/Apps/TwoEleven/manifest.properties b/Apps/TwoEleven/manifest.properties index 7840d40..7fc405c 100644 --- a/Apps/TwoEleven/manifest.properties +++ b/Apps/TwoEleven/manifest.properties @@ -2,8 +2,8 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4 id=tactility.twoeleven -version.name=0.17.0 -version.code=17 +version.name=0.18.0 +version.code=18 name=2048 description=A fun, customizable 2048 sliding tile game for tactility!\nSlide tiles to combine numbers and reach 2048.\nChoose grid sizes: 3x3 (easy), 4x4 (classic), 5x5, or 6x6 (expert). app.0.id=tactility.twoeleven diff --git a/Apps/Vi/CMakeLists.txt b/Apps/Vi/CMakeLists.txt new file mode 100644 index 0000000..cd22471 --- /dev/null +++ b/Apps/Vi/CMakeLists.txt @@ -0,0 +1,13 @@ +# tactility-cmakelists-version: 1 +cmake_minimum_required(VERSION 3.20) + +if (NOT DEFINED ENV{TACTILITY_SDK_PATH}) + message(FATAL_ERROR "TACTILITY_SDK_PATH environment variable is not set") +endif() + +get_filename_component(TACTILITY_SDK_PATH "$ENV{TACTILITY_SDK_PATH}" ABSOLUTE) +include("${TACTILITY_SDK_PATH}/TactilitySDK.cmake") + +tactility_project_pre(vi) +project(vi) +tactility_project_post(vi) diff --git a/Apps/Vi/LICENSE b/Apps/Vi/LICENSE new file mode 100644 index 0000000..6f50a71 --- /dev/null +++ b/Apps/Vi/LICENSE @@ -0,0 +1,348 @@ +--- A note on GPL versions + +BusyBox is distributed under version 2 of the General Public License (included +in its entirety, below). Version 2 is the only version of this license which +this version of BusyBox (or modified versions derived from this one) may be +distributed under. + +------------------------------------------------------------------------ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/Apps/Vi/README.md b/Apps/Vi/README.md new file mode 100644 index 0000000..929d6c9 --- /dev/null +++ b/Apps/Vi/README.md @@ -0,0 +1,34 @@ +# Vi + +The [BusyBox](https://busybox.net) `vi` text editor (version 1.37.0) for the Tactility terminal. + +## Usage + +Run it from the Terminal app: + +``` +vi [-c CMD] [-R] [-H] [FILE]... +``` + +- `-c CMD`: run a colon command at startup +- `-R`: read-only mode +- `-H`: list available features + +## Features + +- Colon commands (`:w`, `:q`, `:wq`, `:e`, `:r`, `:s/old/new/`, ...) +- Yank/put and marks +- Search (plain text, no regular expressions) +- `.` repeat, undo, `:set` options (autoindent, ignorecase, showmatch, tabstop) + +Not supported: regular expressions, `:!` shell commands, signals (suspend/resize). +The terminal has no Home/End/PgUp/PgDn keys: use `0`, `$`, `Ctrl+B` and `Ctrl+F`. + +## Source + +- `main/Source/vi.c` and `main/Source/read_key.c`: unmodified from BusyBox 1.37.0 (`editors/vi.c`, `libbb/read_key.c`) +- `main/Include/libbb.h` and `main/Source/libbb.c`: the subset of BusyBox's libbb that these need, plus the feature configuration + +## License + +Unlike the other apps in this repository, this app is licensed under [GPL v2](LICENSE) (only), as required by BusyBox. diff --git a/Apps/Vi/main/CMakeLists.txt b/Apps/Vi/main/CMakeLists.txt new file mode 100644 index 0000000..4d8f6f2 --- /dev/null +++ b/Apps/Vi/main/CMakeLists.txt @@ -0,0 +1,11 @@ +include("$ENV{TACTILITY_SDK_PATH}/TactilitySDK.cmake") + +file(GLOB_RECURSE SOURCE_FILES Source/*.c) +tactility_component_register(SRCS ${SOURCE_FILES} INCLUDE_DIRS "Include") + +# BusyBox code style. ESP-IDF builds a component library, POSIX builds the project target directly. +if (DEFINED COMPONENT_LIB) + target_compile_options(${COMPONENT_LIB} PRIVATE -Wno-char-subscripts -Wno-implicit-fallthrough) +else () + target_compile_options(${PROJECT_NAME} PRIVATE -Wno-char-subscripts -Wno-implicit-fallthrough) +endif () diff --git a/Apps/Vi/main/Include/libbb.h b/Apps/Vi/main/Include/libbb.h new file mode 100644 index 0000000..34533df --- /dev/null +++ b/Apps/Vi/main/Include/libbb.h @@ -0,0 +1,208 @@ +/* vi: set sw=4 ts=4: */ +/* + * Minimal subset of BusyBox's libbb.h: just what editors/vi.c and libbb/read_key.c need. + * + * Licensed under GPLv2, see file LICENSE in this app's directory. + */ +#pragma once + +/* memrchr() and other GNU extensions */ +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifndef TIOCGWINSZ +#define TIOCGWINSZ 0x5413 +struct winsize { + unsigned short ws_row; + unsigned short ws_col; + unsigned short ws_xpixel; + unsigned short ws_ypixel; +}; +#endif + +/* region Configuration */ + +#define BB_VER "1.37.0" + +#define ENABLE_VI 1 +#define IF_VI(...) __VA_ARGS__ +#define CONFIG_FEATURE_VI_MAX_LEN 4096 +#define ENABLE_FEATURE_VI_8BIT 0 +#define ENABLE_FEATURE_VI_COLON 1 +#define IF_FEATURE_VI_COLON(...) __VA_ARGS__ +#define ENABLE_FEATURE_VI_COLON_EXPAND 1 +#define ENABLE_FEATURE_VI_YANKMARK 1 +#define ENABLE_FEATURE_VI_SEARCH 1 +#define IF_FEATURE_VI_SEARCH(...) __VA_ARGS__ +/* vi.c uses the GNU re_search() API, which newlib doesn't provide */ +#define ENABLE_FEATURE_VI_REGEX_SEARCH 0 +#define ENABLE_FEATURE_VI_USE_SIGNALS 0 +#define ENABLE_FEATURE_VI_DOT_CMD 1 +#define ENABLE_FEATURE_VI_READONLY 1 +#define IF_FEATURE_VI_READONLY(...) __VA_ARGS__ +#define ENABLE_FEATURE_VI_SETOPTS 1 +#define IF_FEATURE_VI_SETOPTS(...) __VA_ARGS__ +#define ENABLE_FEATURE_VI_SET 1 +#define ENABLE_FEATURE_VI_WIN_RESIZE 1 +#define ENABLE_FEATURE_VI_ASK_TERMINAL 0 +#define IF_FEATURE_VI_ASK_TERMINAL(...) +#define ENABLE_FEATURE_VI_UNDO 1 +#define ENABLE_FEATURE_VI_UNDO_QUEUE 1 +#define CONFIG_FEATURE_VI_UNDO_QUEUE_MAX 256 +#define ENABLE_FEATURE_VI_VERBOSE_STATUS 1 +#define ENABLE_FEATURE_VI_CRASHME 0 +#define IF_FEATURE_VI_CRASHME(...) +#define ENABLE_FEATURE_ALLOW_EXEC 0 +#define ENABLE_LOCALE_SUPPORT 0 + +/* read_key.c */ +#define ENABLE_FEATURE_EDITING_ASK_TERMINAL 0 +#define ENABLE_FEATURE_LESS_ASK_TERMINAL 0 + +/* endregion */ + +/* region Compiler helpers */ + +#define FAST_FUNC +#define ALIGN1 +#define UNUSED_PARAM __attribute__((unused)) +#define ALWAYS_INLINE __attribute__((always_inline)) inline +#define MAIN_EXTERNALLY_VISIBLE +#define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) + +typedef signed char smallint; +typedef unsigned char smalluint; + +#define TRUE 1 +#define FALSE 0 + +#define STRERROR_FMT "%s" +#define STRERROR_ERRNO , strerror(errno) + +extern struct globals* ptr_to_globals; +#define SET_PTR_TO_GLOBALS(x) (ptr_to_globals = (struct globals*)(x)) + +extern const char* applet_name; + +/* endregion */ + +/* region Linked list (only what getopt32's "::*" argument needs) */ + +typedef struct llist_t { + struct llist_t* link; + char* data; +} llist_t; + +void llist_add_to_end(llist_t** list_head, void* data); +void* llist_pop(llist_t** elm); + +/* endregion */ + +/* region Memory and strings */ + +void* xmalloc(size_t size); +void* xzalloc(size_t size); +void* xrealloc(void* old, size_t size); +char* xstrdup(const char* s); +char* xstrndup(const char* s, int n); +char* xasprintf(const char* format, ...) __attribute__((format(printf, 1, 2))); + +char* skip_whitespace(const char* s); +char* skip_non_whitespace(const char* s); +char* bb_strchrnul(const char* s, int c); +#define strchrnul bb_strchrnul +int index_in_strings(const char* strings, const char* key); +unsigned bb_strtou(const char* arg, char** endp, int base); +char* concat_path_file(const char* path, const char* filename); + +/* endregion */ + +/* region I/O */ + +ssize_t safe_read(int fd, void* buf, size_t count); +ssize_t full_read(int fd, void* buf, size_t count); +ssize_t full_write(int fd, const void* buf, size_t count); +int safe_poll(struct pollfd* ufds, nfds_t nfds, int timeout_ms); +void* xmalloc_open_read_close(const char* filename, size_t* maxsz_p); +void bb_putchar(int ch); +#define fflush_all() fflush(NULL) +#define fputs_stdout(s) fputs((s), stdout) + +/* endregion */ + +/* region Errors */ + +void bb_show_usage(void) __attribute__((noreturn)); +void bb_simple_error_msg_and_die(const char* s) __attribute__((noreturn)); + +/* endregion */ + +/* region Options */ + +uint32_t getopt32(char** argv, const char* applet_opts, ...); + +/* endregion */ + +/* region Terminal */ + +int get_terminal_width_height(int fd, unsigned* width, unsigned* height); +int tcsetattr_stdin_TCSANOW(const struct termios* tp); +#define TERMIOS_CLEAR_ISIG (1 << 0) +#define TERMIOS_RAW_CRNL_INPUT (1 << 1) +#define TERMIOS_RAW_CRNL_OUTPUT (1 << 2) +#define TERMIOS_RAW_CRNL (TERMIOS_RAW_CRNL_INPUT | TERMIOS_RAW_CRNL_OUTPUT) +#define TERMIOS_RAW_INPUT (1 << 3) +int set_termios_to_raw(int fd, struct termios* oldterm, int flags); + +/* "Keycodes" that report an escape sequence. + * We use something which fits into signed char, + * yet doesn't represent any valid Unicode character. + * Also, -1 is reserved for error indication and we don't use it. */ +enum { + KEYCODE_UP = -2, + KEYCODE_DOWN = -3, + KEYCODE_RIGHT = -4, + KEYCODE_LEFT = -5, + KEYCODE_HOME = -6, + KEYCODE_END = -7, + KEYCODE_INSERT = -8, + KEYCODE_DELETE = -9, + KEYCODE_PAGEUP = -10, + KEYCODE_PAGEDOWN = -11, + KEYCODE_BACKSPACE = -12, + KEYCODE_D = -13, + KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40, + KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40, + KEYCODE_ALT_RIGHT = KEYCODE_RIGHT & ~0x20, + KEYCODE_ALT_LEFT = KEYCODE_LEFT & ~0x20, + KEYCODE_ALT_BACKSPACE = KEYCODE_BACKSPACE & ~0x20, + KEYCODE_ALT_D = KEYCODE_D & ~0x20, + KEYCODE_CURSOR_POS = -0x100, + KEYCODE_BUFFER_SIZE = 16 +}; +int64_t read_key(int fd, char* buffer, int timeout); +int64_t safe_read_key(int fd, char* buffer, int timeout); + +/* endregion */ diff --git a/Apps/Vi/main/Source/libbb.c b/Apps/Vi/main/Source/libbb.c new file mode 100644 index 0000000..90c2753 --- /dev/null +++ b/Apps/Vi/main/Source/libbb.c @@ -0,0 +1,406 @@ +/* vi: set sw=4 ts=4: */ +/* + * Minimal subset of BusyBox's libbb: just what editors/vi.c and libbb/read_key.c need. + * Based on libbb/{xfuncs,xfuncs_printf,compare_string_array,read,safe_poll,llist}.c. + * + * Licensed under GPLv2, see file LICENSE in this app's directory. + */ +#include "libbb.h" + +struct globals* ptr_to_globals; +const char* applet_name = "vi"; + +/* region Linked list */ + +void llist_add_to_end(llist_t** list_head, void* data) { + while (*list_head) { + list_head = &(*list_head)->link; + } + *list_head = xzalloc(sizeof(llist_t)); + (*list_head)->data = data; +} + +void* llist_pop(llist_t** head) { + llist_t* temp = *head; + if (temp == NULL) { + return NULL; + } + void* data = temp->data; + *head = temp->link; + free(temp); + return data; +} + +/* endregion */ + +/* region Memory and strings */ + +void* xmalloc(size_t size) { + void* ptr = malloc(size); + if (ptr == NULL && size != 0) { + bb_simple_error_msg_and_die("out of memory"); + } + return ptr; +} + +void* xzalloc(size_t size) { + void* ptr = xmalloc(size); + memset(ptr, 0, size); + return ptr; +} + +void* xrealloc(void* old, size_t size) { + void* ptr = realloc(old, size); + if (ptr == NULL && size != 0) { + bb_simple_error_msg_and_die("out of memory"); + } + return ptr; +} + +char* xstrdup(const char* s) { + char* t = strdup(s); + if (t == NULL) { + bb_simple_error_msg_and_die("out of memory"); + } + return t; +} + +char* xstrndup(const char* s, int n) { + size_t len = 0; + while (len < (size_t)n && s[len] != '\0') { + len++; + } + char* t = xmalloc(len + 1); + memcpy(t, s, len); + t[len] = '\0'; + return t; +} + +char* xasprintf(const char* format, ...) { + va_list p; + va_start(p, format); + int needed = vsnprintf(NULL, 0, format, p); + va_end(p); + if (needed < 0) { + bb_simple_error_msg_and_die("out of memory"); + } + char* string_ptr = xmalloc((size_t)needed + 1); + va_start(p, format); + vsnprintf(string_ptr, (size_t)needed + 1, format, p); + va_end(p); + return string_ptr; +} + +char* skip_whitespace(const char* s) { + /* In POSIX/C locale (the only locale we care about: do we REALLY want + * to allow Unicode whitespace in, say, .conf files? nuts!) + * isspace is only these chars: "\t\n\v\f\r" and space. + * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13. + * Use that. + */ + while (*s == ' ' || (unsigned char)(*s - 9) <= (13 - 9)) { + s++; + } + return (char*)s; +} + +char* skip_non_whitespace(const char* s) { + while (*s != '\0' && *s != ' ' && (unsigned char)(*s - 9) > (13 - 9)) { + s++; + } + return (char*)s; +} + +char* bb_strchrnul(const char* s, int c) { + while (*s != '\0' && *s != c) { + s++; + } + return (char*)s; +} + +int index_in_strings(const char* strings, const char* key) { + int j, idx = 0; + + while (*strings) { + /* Do we see "key\0" at current position in strings? */ + for (j = 0; *strings == key[j]; ++j) { + if (*strings++ == '\0') { + return idx; /* yes */ + } + } + /* No. Move to the start of the next string. */ + while (*strings++ != '\0') { + continue; + } + idx++; + } + return -1; +} + +unsigned bb_strtou(const char* arg, char** endp, int base) { + char* endptr; + if (endp == NULL) { + endp = &endptr; + } + if (!isalnum((unsigned char)arg[0])) { + *endp = (char*)arg; + errno = ERANGE; + return UINT32_MAX; + } + errno = 0; + unsigned long v = strtoul(arg, endp, base); + if (v > UINT32_MAX) { + errno = ERANGE; + return UINT32_MAX; + } + if (**endp != '\0') { + errno = EINVAL; + } + return (unsigned)v; +} + +char* concat_path_file(const char* path, const char* filename) { + size_t len = strlen(path); + const char* separator = (len > 0 && path[len - 1] == '/') ? "" : "/"; + while (*filename == '/') { + filename++; + } + return xasprintf("%s%s%s", path, separator, filename); +} + +/* endregion */ + +/* region I/O */ + +ssize_t safe_read(int fd, void* buf, size_t count) { + ssize_t n; + do { + n = read(fd, buf, count); + } while (n < 0 && errno == EINTR); + return n; +} + +ssize_t full_read(int fd, void* buf, size_t len) { + ssize_t total = 0; + while (len) { + ssize_t cc = safe_read(fd, buf, len); + if (cc < 0) { + if (total) { + /* we already have some! */ + /* user can do another read to know the error code */ + return total; + } + return cc; /* read() returns -1 on failure. */ + } + if (cc == 0) { + break; + } + buf = ((char*)buf) + cc; + total += cc; + len -= (size_t)cc; + } + return total; +} + +ssize_t full_write(int fd, const void* buf, size_t len) { + ssize_t total = 0; + while (len) { + ssize_t cc = write(fd, buf, len); + if (cc < 0) { + if (errno == EINTR) { + continue; + } + if (total) { + /* we already wrote some! */ + /* user can do another write to know the error code */ + return total; + } + return cc; /* write() returns -1 on failure. */ + } + total += cc; + buf = ((const char*)buf) + cc; + len -= (size_t)cc; + } + return total; +} + +int safe_poll(struct pollfd* ufds, nfds_t nfds, int timeout) { + while (1) { + int n = poll(ufds, nfds, timeout); + if (n >= 0) { + return n; + } + /* Make sure we inch towards completion */ + if (timeout > 0) { + timeout--; + } + /* E.g. strace causes poll to return this */ + if (errno == EINTR) { + continue; + } + return n; + } +} + +void* xmalloc_open_read_close(const char* filename, size_t* maxsz_p) { + int fd = open(filename, O_RDONLY); + if (fd < 0) { + return NULL; + } + size_t size = 0; + size_t capacity = 1024; + char* buf = xmalloc(capacity); + while (1) { + if (size + 1 >= capacity) { + capacity *= 2; + buf = xrealloc(buf, capacity); + } + ssize_t n = safe_read(fd, buf + size, capacity - size - 1); + if (n < 0) { + free(buf); + close(fd); + return NULL; + } + if (n == 0) { + break; + } + size += (size_t)n; + } + close(fd); + buf[size] = '\0'; + if (maxsz_p) { + *maxsz_p = size; + } + return buf; +} + +void bb_putchar(int ch) { + putchar(ch); +} + +/* endregion */ + +/* region Errors */ + +void bb_show_usage(void) { + fputs("Usage: vi [-c CMD] [-R] [-H] [FILE]...\n", stderr); + exit(EXIT_FAILURE); +} + +void bb_simple_error_msg_and_die(const char* s) { + fprintf(stderr, "%s: %s\n", applet_name, s); + exit(EXIT_FAILURE); +} + +/* endregion */ + +/* region Options */ + +/* Subset of libbb's getopt32(): plain flags, "x:" options with a required argument and "x:*" + * options that collect every occurrence into an llist_t. Each ':' option consumes one pointer + * argument, in order. Returns a bitmask with bit N set for the N-th option character. */ +uint32_t getopt32(char** argv, const char* applet_opts, ...) { + char optstring[64]; + char letters[32]; + void* targets[32]; + bool collect[32]; + int count = 0; + size_t optstring_len = 0; + + va_list p; + va_start(p, applet_opts); + for (const char* s = applet_opts; *s != '\0' && count < 32; s++) { + letters[count] = *s; + targets[count] = NULL; + collect[count] = false; + optstring[optstring_len++] = *s; + if (s[1] == ':') { + optstring[optstring_len++] = ':'; + targets[count] = va_arg(p, void*); + s++; + if (s[1] == '*') { + collect[count] = true; + s++; + } + } + count++; + } + va_end(p); + optstring[optstring_len] = '\0'; + + int argc = 0; + while (argv[argc] != NULL) { + argc++; + } + + uint32_t result = 0; + int c; + /* getopt() state is shared with every other program: 0 fully resets it (1 keeps the position within an argument) */ + optind = 0; + while ((c = getopt(argc, argv, optstring)) != -1) { + int i = 0; + while (i < count && letters[i] != c) { + i++; + } + if (i == count) { + bb_show_usage(); + } + result |= (uint32_t)1 << i; + if (targets[i] != NULL) { + if (collect[i]) { + llist_add_to_end((llist_t**)targets[i], optarg); + } else { + *(char**)targets[i] = optarg; + } + } + } + return result; +} + +/* endregion */ + +/* region Terminal */ + +int get_terminal_width_height(int fd, unsigned* width, unsigned* height) { + struct winsize win; + win.ws_row = 0; + win.ws_col = 0; + /* I've seen ioctl returning 0, but row/col is (still?) 0. + * We treat that as an error too. */ + int err = ioctl(fd, TIOCGWINSZ, &win) != 0 || win.ws_row == 0; + if (height) { + *height = win.ws_row ? win.ws_row : 24; + } + if (width) { + *width = win.ws_col ? win.ws_col : 80; + } + return err; +} + +int tcsetattr_stdin_TCSANOW(const struct termios* tp) { + return tcsetattr(STDIN_FILENO, TCSANOW, tp); +} + +int set_termios_to_raw(int fd, struct termios* oldterm, int flags) { + struct termios newterm; + + memset(oldterm, 0, sizeof(*oldterm)); /* paranoia */ + tcgetattr(fd, oldterm); + newterm = *oldterm; + + newterm.c_lflag &= ~(ICANON | ECHO | ECHONL); + if (flags & TERMIOS_CLEAR_ISIG) { + newterm.c_lflag &= ~ISIG; + } + newterm.c_cc[VMIN] = 1; + newterm.c_cc[VTIME] = 0; + if (flags & TERMIOS_RAW_CRNL_INPUT) { + newterm.c_iflag &= ~(IXON | ICRNL); + } + if (flags & TERMIOS_RAW_CRNL_OUTPUT) { + newterm.c_oflag &= ~(ONLCR); + } + return tcsetattr(fd, TCSANOW, &newterm); +} + +/* endregion */ diff --git a/Apps/Vi/main/Source/main.c b/Apps/Vi/main/Source/main.c new file mode 100644 index 0000000..1e602a7 --- /dev/null +++ b/Apps/Vi/main/Source/main.c @@ -0,0 +1,8 @@ +/* + * Licensed under GPLv2, see file LICENSE in this app's directory. + */ +int vi_main(int argc, char** argv); + +int main(int argc, char* argv[]) { + return vi_main(argc, argv); +} diff --git a/Apps/Vi/main/Source/read_key.c b/Apps/Vi/main/Source/read_key.c new file mode 100644 index 0000000..cf8ed41 --- /dev/null +++ b/Apps/Vi/main/Source/read_key.c @@ -0,0 +1,307 @@ +/* vi: set sw=4 ts=4: */ +/* + * Utility routines. + * + * Copyright (C) 2008 Rob Landley + * Copyright (C) 2008 Denys Vlasenko + * + * Licensed under GPLv2, see file LICENSE in this source tree. + */ +#include "libbb.h" + +int64_t FAST_FUNC read_key(int fd, char *buffer, int timeout) +{ + struct pollfd pfd; + const char *seq; + int n; + + /* Known escape sequences for cursor and function keys. + * See "Xterm Control Sequences" + * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html + * Array should be sorted from shortest to longest. + */ + static const char esccmds[] ALIGN1 = { + '\x7f' |0x80,KEYCODE_ALT_BACKSPACE, + '\b' |0x80,KEYCODE_ALT_BACKSPACE, + 'd' |0x80,KEYCODE_ALT_D , + /* lineedit mimics bash: Alt-f and Alt-b are forward/backward + * word jumps. We cheat here and make them return ALT_LEFT/RIGHT + * keycodes. This way, lineedit need no special code to handle them. + * If we'll need to distinguish them, introduce new ALT_F/B keycodes, + * and update lineedit to react to them. + */ + 'f' |0x80,KEYCODE_ALT_RIGHT, + 'b' |0x80,KEYCODE_ALT_LEFT, + 'O','A' |0x80,KEYCODE_UP , + 'O','B' |0x80,KEYCODE_DOWN , + 'O','C' |0x80,KEYCODE_RIGHT , + 'O','D' |0x80,KEYCODE_LEFT , + 'O','H' |0x80,KEYCODE_HOME , + 'O','F' |0x80,KEYCODE_END , +#if 0 + 'O','P' |0x80,KEYCODE_FUN1 , + /* [ESC] ESC O [2] P - [Alt-][Shift-]F1 */ + /* ESC [ O 1 ; 2 P - Shift-F1 */ + /* ESC [ O 1 ; 3 P - Alt-F1 */ + /* ESC [ O 1 ; 4 P - Alt-Shift-F1 */ + /* ESC [ O 1 ; 5 P - Ctrl-F1 */ + /* ESC [ O 1 ; 6 P - Ctrl-Shift-F1 */ + 'O','Q' |0x80,KEYCODE_FUN2 , + 'O','R' |0x80,KEYCODE_FUN3 , + 'O','S' |0x80,KEYCODE_FUN4 , +#endif + '[','A' |0x80,KEYCODE_UP , + '[','B' |0x80,KEYCODE_DOWN , + '[','C' |0x80,KEYCODE_RIGHT , + '[','D' |0x80,KEYCODE_LEFT , + /* ESC [ 1 ; 2 x, where x = A/B/C/D: Shift- */ + /* ESC [ 1 ; 3 x, where x = A/B/C/D: Alt- - implemented below */ + /* ESC [ 1 ; 4 x, where x = A/B/C/D: Alt-Shift- */ + /* ESC [ 1 ; 5 x, where x = A/B/C/D: Ctrl- - implemented below */ + /* ESC [ 1 ; 6 x, where x = A/B/C/D: Ctrl-Shift- */ + /* ESC [ 1 ; 7 x, where x = A/B/C/D: Ctrl-Alt- */ + /* ESC [ 1 ; 8 x, where x = A/B/C/D: Ctrl-Alt-Shift- */ + '[','H' |0x80,KEYCODE_HOME , /* xterm */ + '[','F' |0x80,KEYCODE_END , /* xterm */ + /* [ESC] ESC [ [2] H - [Alt-][Shift-]Home (End similarly?) */ + /* '[','Z' |0x80,KEYCODE_SHIFT_TAB, */ + '[','1','~' |0x80,KEYCODE_HOME , /* vt100? linux vt? or what? */ + '[','2','~' |0x80,KEYCODE_INSERT , + /* ESC [ 2 ; 3 ~ - Alt-Insert */ + '[','3','~' |0x80,KEYCODE_DELETE , + /* [ESC] ESC [ 3 [;2] ~ - [Alt-][Shift-]Delete */ + /* ESC [ 3 ; 3 ~ - Alt-Delete */ + /* ESC [ 3 ; 5 ~ - Ctrl-Delete */ + '[','4','~' |0x80,KEYCODE_END , /* vt100? linux vt? or what? */ + '[','5','~' |0x80,KEYCODE_PAGEUP , + /* ESC [ 5 ; 3 ~ - Alt-PgUp */ + /* ESC [ 5 ; 5 ~ - Ctrl-PgUp */ + /* ESC [ 5 ; 7 ~ - Ctrl-Alt-PgUp */ + '[','6','~' |0x80,KEYCODE_PAGEDOWN, + '[','7','~' |0x80,KEYCODE_HOME , /* vt100? linux vt? or what? */ + '[','8','~' |0x80,KEYCODE_END , /* vt100? linux vt? or what? */ +#if 0 + '[','1','1','~'|0x80,KEYCODE_FUN1 , /* old xterm, deprecated by ESC O P */ + '[','1','2','~'|0x80,KEYCODE_FUN2 , /* old xterm... */ + '[','1','3','~'|0x80,KEYCODE_FUN3 , /* old xterm... */ + '[','1','4','~'|0x80,KEYCODE_FUN4 , /* old xterm... */ + '[','1','5','~'|0x80,KEYCODE_FUN5 , + /* [ESC] ESC [ 1 5 [;2] ~ - [Alt-][Shift-]F5 */ + '[','1','7','~'|0x80,KEYCODE_FUN6 , + '[','1','8','~'|0x80,KEYCODE_FUN7 , + '[','1','9','~'|0x80,KEYCODE_FUN8 , + '[','2','0','~'|0x80,KEYCODE_FUN9 , + '[','2','1','~'|0x80,KEYCODE_FUN10 , + '[','2','3','~'|0x80,KEYCODE_FUN11 , + '[','2','4','~'|0x80,KEYCODE_FUN12 , + /* ESC [ 2 4 ; 2 ~ - Shift-F12 */ + /* ESC [ 2 4 ; 3 ~ - Alt-F12 */ + /* ESC [ 2 4 ; 4 ~ - Alt-Shift-F12 */ + /* ESC [ 2 4 ; 5 ~ - Ctrl-F12 */ + /* ESC [ 2 4 ; 6 ~ - Ctrl-Shift-F12 */ +#endif + /* '[','1',';','5','A' |0x80,KEYCODE_CTRL_UP , - unused */ + /* '[','1',';','5','B' |0x80,KEYCODE_CTRL_DOWN , - unused */ + '[','1',';','5','C' |0x80,KEYCODE_CTRL_RIGHT, + '[','1',';','5','D' |0x80,KEYCODE_CTRL_LEFT , + /* '[','1',';','3','A' |0x80,KEYCODE_ALT_UP , - unused */ + /* '[','1',';','3','B' |0x80,KEYCODE_ALT_DOWN , - unused */ + '[','1',';','3','C' |0x80,KEYCODE_ALT_RIGHT, + '[','1',';','3','D' |0x80,KEYCODE_ALT_LEFT , + /* '[','3',';','3','~' |0x80,KEYCODE_ALT_DELETE, - unused */ + 0 + }; + + pfd.fd = fd; + pfd.events = POLLIN; + + buffer++; /* saved chars counter is in buffer[-1] now */ + + start_over: + errno = 0; + n = (unsigned char)buffer[-1]; + if (n == 0) { + /* If no data, wait for input. + * If requested, wait TIMEOUT ms. TIMEOUT = -1 is useful + * if fd can be in non-blocking mode. + */ + if (timeout >= -1) { + n = poll(&pfd, 1, timeout); + if (n < 0 && errno == EINTR) + return n; + if (n == 0) { + /* Timed out */ + errno = EAGAIN; + return -1; + } + } + /* It is tempting to read more than one byte here, + * but it breaks pasting. Example: at shell prompt, + * user presses "c","a","t" and then pastes "\nline\n". + * When we were reading 3 bytes here, we were eating + * "li" too, and cat was getting wrong input. + */ + n = read(fd, buffer, 1); + if (n <= 0) + return -1; + } + + { + unsigned char c = buffer[0]; + n--; + if (n) + memmove(buffer, buffer + 1, n); + /* Only ESC starts ESC sequences */ + if (c != 27) { + buffer[-1] = n; + return c; + } + } + + /* Loop through known ESC sequences */ + seq = esccmds; + while (*seq != '\0') { + /* n - position in sequence we did not read yet */ + int i = 0; /* position in sequence to compare */ + + /* Loop through chars in this sequence */ + while (1) { + /* So far escape sequence matched up to [i-1] */ + if (n <= i) { + /* Need more chars, read another one if it wouldn't block. + * Note that escape sequences come in as a unit, + * so if we block for long it's not really an escape sequence. + * Timeout is needed to reconnect escape sequences + * split up by transmission over a serial console. */ + if (safe_poll(&pfd, 1, 50) == 0) { + /* No more data! + * Array is sorted from shortest to longest, + * we can't match anything later in array - + * anything later is longer than this seq. + * Break out of both loops. */ + goto got_all; + } + errno = 0; + if (safe_read(fd, buffer + n, 1) <= 0) { + /* If EAGAIN, then fd is O_NONBLOCK and poll lied: + * in fact, there is no data. */ + if (errno != EAGAIN) { + /* otherwise: it's EOF/error */ + buffer[-1] = 0; + return -1; + } + goto got_all; + } + n++; + } + if (buffer[i] != (seq[i] & 0x7f)) { + /* This seq doesn't match, go to next */ + seq += i; + /* Forward to last char */ + while (!(*seq & 0x80)) + seq++; + /* Skip it and the keycode which follows */ + seq += 2; + break; + } + if (seq[i] & 0x80) { + /* Entire seq matched */ + n = 0; + /* n -= i; memmove(...); + * would be more correct, + * but we never read ahead that much, + * and n == i here. */ + buffer[-1] = 0; + return (signed char)seq[i+1]; + } + i++; + } + } + /* We did not find matching sequence. + * We possibly read and stored more input in buffer[] by now. + * n = bytes read. Try to read more until we time out. + */ + while (n < KEYCODE_BUFFER_SIZE-1) { /* 1 for count byte at buffer[-1] */ + if (safe_poll(&pfd, 1, 50) == 0) { + /* No more data! */ + break; + } + errno = 0; + if (safe_read(fd, buffer + n, 1) <= 0) { + /* If EAGAIN, then fd is O_NONBLOCK and poll lied: + * in fact, there is no data. */ + if (errno != EAGAIN) { + /* otherwise: it's EOF/error */ + buffer[-1] = 0; + return -1; + } + break; + } + n++; + /* Try to decipher "ESC [ NNN ; NNN R" sequence */ + if ((ENABLE_FEATURE_EDITING_ASK_TERMINAL + || ENABLE_FEATURE_VI_ASK_TERMINAL + || ENABLE_FEATURE_LESS_ASK_TERMINAL + ) + && n >= 5 + && buffer[0] == '[' + && buffer[n-1] == 'R' + && isdigit(buffer[1]) + ) { + char *end; + unsigned long row, col; + + row = strtoul(buffer + 1, &end, 10); + if (*end != ';' || !isdigit(end[1])) + continue; + col = strtoul(end + 1, &end, 10); + if (*end != 'R') + continue; + if (row < 1 || col < 1 || (row | col) > 0x7fff) + continue; + + buffer[-1] = 0; + /* Pack into "1 " 32-bit sequence */ + row |= ((unsigned)(-1) << 15); + col |= (row << 16); + /* Return it in high-order word */ + return ((int64_t) col << 32) | (uint32_t)KEYCODE_CURSOR_POS; + } + } + got_all: + + if (n <= 1) { + /* Alt-x is usually returned as ESC x. + * Report ESC, x is remembered for the next call. + */ + buffer[-1] = n; + return 27; + } + + /* We were doing "buffer[-1] = n; return c;" here, but this results + * in unknown key sequences being interpreted as ESC + garbage. + * This was not useful. Pretend there was no key pressed, + * go and wait for a new keypress: + */ + buffer[-1] = 0; + goto start_over; +} + +int64_t FAST_FUNC safe_read_key(int fd, char *buffer, int timeout) +{ + int64_t r; + do { + /* errno = 0; - read_key does this itself */ + r = read_key(fd, buffer, timeout); + } while (errno == EINTR); + return r; +} + +void FAST_FUNC read_key_ungets(char *buffer, const char *str, unsigned len) +{ + unsigned cur_len = (unsigned char)buffer[0]; + if (len > KEYCODE_BUFFER_SIZE-1 - cur_len) + len = KEYCODE_BUFFER_SIZE-1 - cur_len; + memcpy(buffer + 1 + cur_len, str, len); + buffer[0] += len; +} diff --git a/Apps/Vi/main/Source/vi.c b/Apps/Vi/main/Source/vi.c new file mode 100644 index 0000000..34932f6 --- /dev/null +++ b/Apps/Vi/main/Source/vi.c @@ -0,0 +1,5053 @@ +/* vi: set sw=4 ts=4: */ +/* + * tiny vi.c: A small 'vi' clone + * Copyright (C) 2000, 2001 Sterling Huxley + * + * Licensed under GPLv2 or later, see file LICENSE in this source tree. + */ +// +//Things To Do: +// ./.exrc +// add magic to search /foo.*bar +// add :help command +// :map macros +// if mark[] values were line numbers rather than pointers +// it would be easier to change the mark when add/delete lines +// More intelligence in refresh() +// ":r !cmd" and "!cmd" to filter text through an external command +// An "ex" line oriented mode- maybe using "cmdedit" + +//config:config VI +//config: bool "vi (26 kb)" +//config: default y +//config: help +//config: 'vi' is a text editor. More specifically, it is the One True +//config: text editor . It does, however, have a rather steep +//config: learning curve. If you are not already comfortable with 'vi' +//config: you may wish to use something else. +//config: +//config:config FEATURE_VI_MAX_LEN +//config: int "Maximum screen width" +//config: range 256 16384 +//config: default 4096 +//config: depends on VI +//config: help +//config: Contrary to what you may think, this is not eating much. +//config: Make it smaller than 4k only if you are very limited on memory. +//config: +//config:config FEATURE_VI_8BIT +//config: bool "Allow to display 8-bit chars (otherwise shows dots)" +//config: default n +//config: depends on VI +//config: help +//config: If your terminal can display characters with high bit set, +//config: you may want to enable this. Note: vi is not Unicode-capable. +//config: If your terminal combines several 8-bit bytes into one character +//config: (as in Unicode mode), this will not work properly. +//config: +//config:config FEATURE_VI_COLON +//config: bool "Enable \":\" colon commands (no \"ex\" mode)" +//config: default y +//config: depends on VI +//config: help +//config: Enable a limited set of colon commands. This does not +//config: provide an "ex" mode. +//config: +//config:config FEATURE_VI_COLON_EXPAND +//config: bool "Expand \"%\" and \"#\" in colon commands" +//config: default y +//config: depends on FEATURE_VI_COLON +//config: help +//config: Expand the special characters \"%\" (current filename) +//config: and \"#\" (alternate filename) in colon commands. +//config: +//config:config FEATURE_VI_YANKMARK +//config: bool "Enable yank/put commands and mark cmds" +//config: default y +//config: depends on VI +//config: help +//config: This enables you to use yank and put, as well as mark. +//config: +//config:config FEATURE_VI_SEARCH +//config: bool "Enable search and replace cmds" +//config: default y +//config: depends on VI +//config: help +//config: Select this if you wish to be able to do search and replace. +//config: +//config:config FEATURE_VI_REGEX_SEARCH +//config: bool "Enable regex in search and replace" +//config: default n # Uses GNU regex, which may be unavailable. FIXME +//config: depends on FEATURE_VI_SEARCH +//config: help +//config: Use extended regex search. +//config: +//config:config FEATURE_VI_USE_SIGNALS +//config: bool "Catch signals" +//config: default y +//config: depends on VI +//config: help +//config: Selecting this option will make vi signal aware. This will support +//config: SIGWINCH to deal with Window Changes, catch ^Z and ^C and alarms. +//config: +//config:config FEATURE_VI_DOT_CMD +//config: bool "Remember previous cmd and \".\" cmd" +//config: default y +//config: depends on VI +//config: help +//config: Make vi remember the last command and be able to repeat it. +//config: +//config:config FEATURE_VI_READONLY +//config: bool "Enable -R option and \"view\" mode" +//config: default y +//config: depends on VI +//config: help +//config: Enable the read-only command line option, which allows the user to +//config: open a file in read-only mode. +//config: +//config:config FEATURE_VI_SETOPTS +//config: bool "Enable settable options, ai ic showmatch" +//config: default y +//config: depends on VI +//config: help +//config: Enable the editor to set some (ai, ic, showmatch) options. +//config: +//config:config FEATURE_VI_SET +//config: bool "Support :set" +//config: default y +//config: depends on VI +//config: +//config:config FEATURE_VI_WIN_RESIZE +//config: bool "Handle window resize" +//config: default y +//config: depends on VI +//config: help +//config: Behave nicely with terminals that get resized. +//config: +//config:config FEATURE_VI_ASK_TERMINAL +//config: bool "Use 'tell me cursor position' ESC sequence to measure window" +//config: default y +//config: depends on VI +//config: help +//config: If terminal size can't be retrieved and $LINES/$COLUMNS are not set, +//config: this option makes vi perform a last-ditch effort to find it: +//config: position cursor to 999,999 and ask terminal to report real +//config: cursor position using "ESC [ 6 n" escape sequence, then read stdin. +//config: This is not clean but helps a lot on serial lines and such. +//config: +//config:config FEATURE_VI_UNDO +//config: bool "Support undo command \"u\"" +//config: default y +//config: depends on VI +//config: help +//config: Support the 'u' command to undo insertion, deletion, and replacement +//config: of text. +//config: +//config:config FEATURE_VI_UNDO_QUEUE +//config: bool "Enable undo operation queuing" +//config: default y +//config: depends on FEATURE_VI_UNDO +//config: help +//config: The vi undo functions can use an intermediate queue to greatly lower +//config: malloc() calls and overhead. When the maximum size of this queue is +//config: reached, the contents of the queue are committed to the undo stack. +//config: This increases the size of the undo code and allows some undo +//config: operations (especially un-typing/backspacing) to be far more useful. +//config: +//config:config FEATURE_VI_UNDO_QUEUE_MAX +//config: int "Maximum undo character queue size" +//config: default 256 +//config: range 32 65536 +//config: depends on FEATURE_VI_UNDO_QUEUE +//config: help +//config: This option sets the number of bytes used at runtime for the queue. +//config: Smaller values will create more undo objects and reduce the amount +//config: of typed or backspaced characters that are grouped into one undo +//config: operation; larger values increase the potential size of each undo +//config: and will generally malloc() larger objects and less frequently. +//config: Unless you want more (or less) frequent "undo points" while typing, +//config: you should probably leave this unchanged. +//config: +//config:config FEATURE_VI_VERBOSE_STATUS +//config: bool "Enable verbose status reporting" +//config: default y +//config: depends on VI +//config: help +//config: Enable more verbose reporting of the results of yank, change, +//config: delete, undo and substitution commands. + +//applet:IF_VI(APPLET(vi, BB_DIR_BIN, BB_SUID_DROP)) + +//kbuild:lib-$(CONFIG_VI) += vi.o + +//usage:#define vi_trivial_usage +//usage: IF_FEATURE_VI_COLON("[-c CMD] ")IF_FEATURE_VI_READONLY("[-R] ")"[-H] [FILE]..." +//usage:#define vi_full_usage "\n\n" +//usage: "Edit FILE\n" +//usage: IF_FEATURE_VI_COLON( +//usage: "\n -c CMD Initial command to run ($EXINIT and ~/.exrc also available)" +//usage: ) +//usage: IF_FEATURE_VI_READONLY( +//usage: "\n -R Read-only" +//usage: ) +//usage: "\n -H List available features" +// note: non-standard, "vim -H" is Hebrew mode (bidi support) + +#include "libbb.h" +// Should be after libbb.h: on some systems regex.h needs sys/types.h: +#if ENABLE_FEATURE_VI_REGEX_SEARCH +# include +#endif + +// the CRASHME code is unmaintained, and doesn't currently build +#define ENABLE_FEATURE_VI_CRASHME 0 +#define IF_FEATURE_VI_CRASHME(...) + + +#if ENABLE_LOCALE_SUPPORT + +#if ENABLE_FEATURE_VI_8BIT +//FIXME: this does not work properly for Unicode anyway +# define Isprint(c) (isprint)(c) +#else +# define Isprint(c) isprint_asciionly(c) +#endif + +#else + +// 0x9b is Meta-ESC +#if ENABLE_FEATURE_VI_8BIT +# define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b) +#else +# define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f) +#endif + +#endif + +#define isbackspace(c) ((c) == term_orig.c_cc[VERASE] || (c) == 8 || (c) == 127) + +enum { + MAX_TABSTOP = 32, // sanity limit + // User input len. Need not be extra big. + // Lines in file being edited *can* be bigger than this. + MAX_INPUT_LEN = 128, + // Sanity limits. We have only one buffer of this size. + MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN, + MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN, +}; + +// VT102 ESC sequences. +// See "Xterm Control Sequences" +// http://invisible-island.net/xterm/ctlseqs/ctlseqs.html +#define ESC "\033" +// Inverse/Normal text +#define ESC_BOLD_TEXT ESC"[7m" +#define ESC_NORM_TEXT ESC"[m" +// Bell +#define ESC_BELL "\007" +// Clear-to-end-of-line +#define ESC_CLEAR2EOL ESC"[K" +// Clear-to-end-of-screen. +// (We use default param here. +// Full sequence is "ESC [ J", +// is 0/1/2 = "erase below/above/all".) +#define ESC_CLEAR2EOS ESC"[J" +// Cursor to given coordinate (1,1: top left) +#define ESC_SET_CURSOR_POS ESC"[%u;%uH" +#define ESC_SET_CURSOR_TOPLEFT ESC"[H" +//UNUSED +//// Cursor up and down +//#define ESC_CURSOR_UP ESC"[A" +//#define ESC_CURSOR_DOWN "\n" + +#if ENABLE_FEATURE_VI_DOT_CMD +// cmds modifying text[] +static const char modifying_cmds[] ALIGN1 = "aAcCdDiIJoOpPrRs""xX<>~"; +#endif + +enum { + YANKONLY = FALSE, + YANKDEL = TRUE, + FORWARD = 1, // code depends on "1" for array index + BACK = -1, // code depends on "-1" for array index + LIMITED = 0, // char_search() only current line + FULL = 1, // char_search() to the end/beginning of entire text + PARTIAL = 0, // buffer contains partial line + WHOLE = 1, // buffer contains whole lines + MULTI = 2, // buffer may include newlines + + S_BEFORE_WS = 1, // used in skip_thing() for moving "dot" + S_TO_WS = 2, // used in skip_thing() for moving "dot" + S_OVER_WS = 3, // used in skip_thing() for moving "dot" + S_END_PUNCT = 4, // used in skip_thing() for moving "dot" + S_END_ALNUM = 5, // used in skip_thing() for moving "dot" + + C_END = -1, // cursor is at end of line due to '$' command +}; + + +// vi.c expects chars to be unsigned. +// busybox build system provides that, but it's better +// to audit and fix the source + +struct globals { + // many references - keep near the top of globals + char *text, *end; // pointers to the user data in memory + char *dot; // where all the action takes place + int text_size; // size of the allocated buffer + + // the rest +#if ENABLE_FEATURE_VI_SETOPTS + smallint vi_setops; // set by setops() +#define VI_AUTOINDENT (1 << 0) +#define VI_EXPANDTAB (1 << 1) +#define VI_ERR_METHOD (1 << 2) +#define VI_IGNORECASE (1 << 3) +#define VI_SHOWMATCH (1 << 4) +#define VI_TABSTOP (1 << 5) +#define autoindent (vi_setops & VI_AUTOINDENT) +#define expandtab (vi_setops & VI_EXPANDTAB ) +#define err_method (vi_setops & VI_ERR_METHOD) // indicate error with beep or flash +#define ignorecase (vi_setops & VI_IGNORECASE) +#define showmatch (vi_setops & VI_SHOWMATCH ) +// order of constants and strings must match +#define OPTS_STR \ + "ai\0""autoindent\0" \ + "et\0""expandtab\0" \ + "fl\0""flash\0" \ + "ic\0""ignorecase\0" \ + "sm\0""showmatch\0" \ + "ts\0""tabstop\0" +#else +#define autoindent (0) +#define expandtab (0) +#define err_method (0) +#define ignorecase (0) +#endif + +#if ENABLE_FEATURE_VI_READONLY + smallint readonly_mode; +#define SET_READONLY_FILE(flags) ((flags) |= 0x01) +#define SET_READONLY_MODE(flags) ((flags) |= 0x02) +#define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe) +#else +#define SET_READONLY_FILE(flags) ((void)0) +#define SET_READONLY_MODE(flags) ((void)0) +#define UNSET_READONLY_FILE(flags) ((void)0) +#endif + + smallint editing; // >0 while we are editing a file + // [code audit says "can be 0, 1 or 2 only"] + smallint cmd_mode; // 0=command 1=insert 2=replace + int modified_count; // buffer contents changed if !0 + int last_modified_count; // = -1; + int cmdline_filecnt; // how many file names on cmd line + int cmdcnt; // repetition count + char *rstart; // start of text in Replace mode + unsigned rows, columns; // the terminal screen is this size +#if ENABLE_FEATURE_VI_ASK_TERMINAL + int get_rowcol_error; +#endif + int crow, ccol; // cursor is on Crow x Ccol + int offset; // chars scrolled off the screen to the left + int have_status_msg; // is default edit status needed? + // [don't make smallint!] + int last_status_cksum; // hash of current status line + char *current_filename; +#if ENABLE_FEATURE_VI_COLON_EXPAND + char *alt_filename; +#endif + char *screenbegin; // index into text[], of top line on the screen + char *screen; // pointer to the virtual screen buffer + int screensize; // and its size + int tabstop; + int last_search_char; // last char searched for (int because of Unicode) + smallint last_search_cmd; // command used to invoke last char search +#if ENABLE_FEATURE_VI_CRASHME + char last_input_char; // last char read from user +#endif +#if ENABLE_FEATURE_VI_UNDO_QUEUE + char undo_queue_state; // One of UNDO_INS, UNDO_DEL, UNDO_EMPTY +#endif + +#if ENABLE_FEATURE_VI_DOT_CMD + smallint adding2q; // are we currently adding user input to q + int lmc_len; // length of last_modifying_cmd + char *ioq, *ioq_start; // pointer to string for get_one_char to "read" + int dotcnt; // number of times to repeat '.' command +#endif +#if ENABLE_FEATURE_VI_SEARCH + char *last_search_pattern; // last pattern from a '/' or '?' search +#endif +#if ENABLE_FEATURE_VI_SETOPTS + int char_insert__indentcol; // column of recent autoindent or 0 + int newindent; // autoindent value for 'O'/'cc' commands + // or -1 to use indent from previous line +#endif + smallint cmd_error; + + // former statics +#if ENABLE_FEATURE_VI_YANKMARK + char *edit_file__cur_line; +#endif + int refresh__old_offset; + int format_edit_status__tot; + + // a few references only +#if ENABLE_FEATURE_VI_YANKMARK + smalluint YDreg;//,Ureg;// default delete register and orig line for "U" +#define Ureg 27 + char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27 + char regtype[28]; // buffer type: WHOLE, MULTI or PARTIAL + char *mark[28]; // user marks points somewhere in text[]- a-z and previous context '' +#endif +#if ENABLE_FEATURE_VI_USE_SIGNALS + sigjmp_buf restart; // int_handler() jumps to location remembered here +#endif + struct termios term_orig; // remember what the cooked mode was + int cindex; // saved character index for up/down motion + smallint keep_index; // retain saved character index +#if ENABLE_FEATURE_VI_COLON + llist_t *initial_cmds; +#endif + // Should be just enough to hold a key sequence, + // but CRASHME mode uses it as generated command buffer too +#if ENABLE_FEATURE_VI_CRASHME + char readbuffer[128]; +#else + char readbuffer[KEYCODE_BUFFER_SIZE]; +#endif +#define STATUS_BUFFER_LEN 200 + char status_buffer[STATUS_BUFFER_LEN]; // messages to the user +#if ENABLE_FEATURE_VI_DOT_CMD + char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "." +#endif + char get_input_line__buf[MAX_INPUT_LEN]; // former static + + char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2]; + +#if ENABLE_FEATURE_VI_UNDO +// undo_push() operations +#define UNDO_INS 0 +#define UNDO_DEL 1 +#define UNDO_INS_CHAIN 2 +#define UNDO_DEL_CHAIN 3 +# if ENABLE_FEATURE_VI_UNDO_QUEUE +#define UNDO_INS_QUEUED 4 +#define UNDO_DEL_QUEUED 5 +# endif + +// Pass-through flags for functions that can be undone +#define NO_UNDO 0 +#define ALLOW_UNDO 1 +#define ALLOW_UNDO_CHAIN 2 +# if ENABLE_FEATURE_VI_UNDO_QUEUE +#define ALLOW_UNDO_QUEUED 3 +# else +// If undo queuing disabled, don't invoke the missing queue logic +#define ALLOW_UNDO_QUEUED ALLOW_UNDO +# endif + + struct undo_object { + struct undo_object *prev; // Linking back avoids list traversal (LIFO) + int start; // Offset where the data should be restored/deleted + int length; // total data size + uint8_t u_type; // 0=deleted, 1=inserted, 2=swapped + char undo_text[1]; // text that was deleted (if deletion) + } *undo_stack_tail; +# if ENABLE_FEATURE_VI_UNDO_QUEUE +#define UNDO_USE_SPOS 32 +#define UNDO_EMPTY 64 + char *undo_queue_spos; // Start position of queued operation + int undo_q; + char undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX]; +# endif +#endif /* ENABLE_FEATURE_VI_UNDO */ +}; +#define G (*ptr_to_globals) +#define text (G.text ) +#define text_size (G.text_size ) +#define end (G.end ) +#define dot (G.dot ) +#define reg (G.reg ) + +#define vi_setops (G.vi_setops ) +#define editing (G.editing ) +#define cmd_mode (G.cmd_mode ) +#define modified_count (G.modified_count ) +#define last_modified_count (G.last_modified_count) +#define cmdline_filecnt (G.cmdline_filecnt ) +#define cmdcnt (G.cmdcnt ) +#define rstart (G.rstart ) +#define rows (G.rows ) +#define columns (G.columns ) +#define crow (G.crow ) +#define ccol (G.ccol ) +#define offset (G.offset ) +#define status_buffer (G.status_buffer ) +#define have_status_msg (G.have_status_msg ) +#define last_status_cksum (G.last_status_cksum ) +#define current_filename (G.current_filename ) +#define alt_filename (G.alt_filename ) +#define screen (G.screen ) +#define screensize (G.screensize ) +#define screenbegin (G.screenbegin ) +#define tabstop (G.tabstop ) +#define last_search_char (G.last_search_char ) +#define last_search_cmd (G.last_search_cmd ) +#if ENABLE_FEATURE_VI_CRASHME +#define last_input_char (G.last_input_char ) +#endif +#if ENABLE_FEATURE_VI_READONLY +#define readonly_mode (G.readonly_mode ) +#else +#define readonly_mode 0 +#endif +#define adding2q (G.adding2q ) +#define lmc_len (G.lmc_len ) +#define ioq (G.ioq ) +#define ioq_start (G.ioq_start ) +#define dotcnt (G.dotcnt ) +#define last_search_pattern (G.last_search_pattern) +#define char_insert__indentcol (G.char_insert__indentcol) +#define newindent (G.newindent ) +#define cmd_error (G.cmd_error ) + +#define edit_file__cur_line (G.edit_file__cur_line) +#define refresh__old_offset (G.refresh__old_offset) +#define format_edit_status__tot (G.format_edit_status__tot) + +#define YDreg (G.YDreg ) +//#define Ureg (G.Ureg ) +#define regtype (G.regtype ) +#define mark (G.mark ) +#define restart (G.restart ) +#define term_orig (G.term_orig ) +#define cindex (G.cindex ) +#define keep_index (G.keep_index ) +#define initial_cmds (G.initial_cmds ) +#define readbuffer (G.readbuffer ) +#define scr_out_buf (G.scr_out_buf ) +#define last_modifying_cmd (G.last_modifying_cmd ) +#define get_input_line__buf (G.get_input_line__buf) + +#if ENABLE_FEATURE_VI_UNDO +#define undo_stack_tail (G.undo_stack_tail ) +# if ENABLE_FEATURE_VI_UNDO_QUEUE +#define undo_queue_state (G.undo_queue_state) +#define undo_q (G.undo_q ) +#define undo_queue (G.undo_queue ) +#define undo_queue_spos (G.undo_queue_spos ) +# endif +#endif + +#define INIT_G() do { \ + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ + last_modified_count--; \ + /* "" but has space for 2 chars: */ \ + IF_FEATURE_VI_SEARCH(last_search_pattern = xzalloc(2);) \ + tabstop = 8; \ + IF_FEATURE_VI_SETOPTS(newindent--;) \ +} while (0) + +#if ENABLE_FEATURE_VI_CRASHME +static int crashme = 0; +#endif + +static void show_status_line(void); // put a message on the bottom line +static void status_line_bold(const char *, ...); + +static void show_help(void) +{ + puts("These features are available:" +#if ENABLE_FEATURE_VI_SEARCH + "\n\tPattern searches with / and ?" +#endif +#if ENABLE_FEATURE_VI_DOT_CMD + "\n\tLast command repeat with ." +#endif +#if ENABLE_FEATURE_VI_YANKMARK + "\n\tLine marking with 'x" + "\n\tNamed buffers with \"x" +#endif +#if ENABLE_FEATURE_VI_READONLY + //not implemented: "\n\tReadonly if vi is called as \"view\"" + //redundant: usage text says this too: "\n\tReadonly with -R command line arg" +#endif +#if ENABLE_FEATURE_VI_SET + "\n\tSome colon mode commands with :" +#endif +#if ENABLE_FEATURE_VI_SETOPTS + "\n\tSettable options with \":set\"" +#endif +#if ENABLE_FEATURE_VI_USE_SIGNALS + "\n\tSignal catching- ^C" + "\n\tJob suspend and resume with ^Z" +#endif +#if ENABLE_FEATURE_VI_WIN_RESIZE + "\n\tAdapt to window re-sizes" +#endif + ); +} + +static void write1(const char *out) +{ + fputs_stdout(out); +} + +#if ENABLE_FEATURE_VI_WIN_RESIZE +static int query_screen_dimensions(void) +{ + int err = get_terminal_width_height(STDIN_FILENO, &columns, &rows); + if (rows > MAX_SCR_ROWS) + rows = MAX_SCR_ROWS; + if (columns > MAX_SCR_COLS) + columns = MAX_SCR_COLS; + return err; +} +#else +static ALWAYS_INLINE int query_screen_dimensions(void) +{ + return 0; +} +#endif + +// sleep for 'h' 1/100 seconds, return 1/0 if stdin is (ready for read)/(not ready) +static int mysleep(int hund) +{ + struct pollfd pfd[1]; + + if (hund != 0) + fflush_all(); + + pfd[0].fd = STDIN_FILENO; + pfd[0].events = POLLIN; + return safe_poll(pfd, 1, hund*10) > 0; +} + +//----- Set terminal attributes -------------------------------- +static void rawmode(void) +{ + // no TERMIOS_CLEAR_ISIG: leave ISIG on - allow signals + set_termios_to_raw(STDIN_FILENO, &term_orig, TERMIOS_RAW_CRNL); +} + +static void cookmode(void) +{ + fflush_all(); + tcsetattr_stdin_TCSANOW(&term_orig); +} + +//----- Terminal Drawing --------------------------------------- +// The terminal is made up of 'rows' line of 'columns' columns. +// classically this would be 24 x 80. +// screen coordinates +// 0,0 ... 0,79 +// 1,0 ... 1,79 +// . ... . +// . ... . +// 22,0 ... 22,79 +// 23,0 ... 23,79 <- status line + +//----- Move the cursor to row x col (count from 0, not 1) ------- +static void place_cursor(int row, int col) +{ + char cm1[sizeof(ESC_SET_CURSOR_POS) + sizeof(int)*3 * 2]; + + if (row < 0) row = 0; + if (row >= rows) row = rows - 1; + if (col < 0) col = 0; + if (col >= columns) col = columns - 1; + + sprintf(cm1, ESC_SET_CURSOR_POS, row + 1, col + 1); + write1(cm1); +} + +//----- Erase from cursor to end of line ----------------------- +static void clear_to_eol(void) +{ + write1(ESC_CLEAR2EOL); +} + +static void go_bottom_and_clear_to_eol(void) +{ + place_cursor(rows - 1, 0); + clear_to_eol(); +} + +//----- Start standout mode ------------------------------------ +static void standout_start(void) +{ + write1(ESC_BOLD_TEXT); +} + +//----- End standout mode -------------------------------------- +static void standout_end(void) +{ + write1(ESC_NORM_TEXT); +} + +//----- Text Movement Routines --------------------------------- +static char *begin_line(char *p) // return pointer to first char cur line +{ + if (p > text) { + p = memrchr(text, '\n', p - text); + if (!p) + return text; + return p + 1; + } + return p; +} + +static char *end_line(char *p) // return pointer to NL of cur line +{ + if (p < end - 1) { + p = memchr(p, '\n', end - p - 1); + if (!p) + return end - 1; + } + return p; +} + +static char *dollar_line(char *p) // return pointer to just before NL line +{ + p = end_line(p); + // Try to stay off of the Newline + if (*p == '\n' && (p - begin_line(p)) > 0) + p--; + return p; +} + +static char *prev_line(char *p) // return pointer first char prev line +{ + p = begin_line(p); // goto beginning of cur line + if (p > text && p[-1] == '\n') + p--; // step to prev line + p = begin_line(p); // goto beginning of prev line + return p; +} + +static char *next_line(char *p) // return pointer first char next line +{ + p = end_line(p); + if (p < end - 1 && *p == '\n') + p++; // step to next line + return p; +} + +//----- Text Information Routines ------------------------------ +static char *end_screen(void) +{ + char *q; + int cnt; + + // find new bottom line + q = screenbegin; + for (cnt = 0; cnt < rows - 2; cnt++) + q = next_line(q); + q = end_line(q); + return q; +} + +// count line from start to stop +static int count_lines(char *start, char *stop) +{ + char *q; + int cnt; + + if (stop < start) { // start and stop are backwards- reverse them + q = start; + start = stop; + stop = q; + } + cnt = 0; + stop = end_line(stop); + while (start <= stop && start <= end - 1) { + start = end_line(start); + if (*start == '\n') + cnt++; + start++; + } + return cnt; +} + +static char *find_line(int li) // find beginning of line #li +{ + char *q; + + for (q = text; li > 1; li--) { + q = next_line(q); + } + return q; +} + +static int next_tabstop(int col) +{ + return col + ((tabstop - 1) - (col % tabstop)); +} + +static int prev_tabstop(int col) +{ + return col - ((col % tabstop) ?: tabstop); +} + +static int next_column(char c, int co) +{ + if (c == '\t') + co = next_tabstop(co); + else if ((unsigned char)c < ' ' || c == 0x7f) + co++; // display as ^X, use 2 columns + return co + 1; +} + +static int get_column(char *p) +{ + const char *r; + int co = 0; + + for (r = begin_line(p); r < p; r++) + co = next_column(*r, co); + return co; +} + +//----- Erase the Screen[] memory ------------------------------ +static void screen_erase(void) +{ + memset(screen, ' ', screensize); // clear new screen +} + +static void new_screen(int ro, int co) +{ + char *s; + + free(screen); + screensize = ro * co + 8; + s = screen = xmalloc(screensize); + // initialize the new screen. assume this will be a empty file. + screen_erase(); + // non-existent text[] lines start with a tilde (~). + //screen[(1 * co) + 0] = '~'; + //screen[(2 * co) + 0] = '~'; + //.. + //screen[((ro-2) * co) + 0] = '~'; + ro -= 2; + while (--ro >= 0) { + s += co; + *s = '~'; + } +} + +//----- Synchronize the cursor to Dot -------------------------- +static void sync_cursor(char *d, int *row, int *col) +{ + char *beg_cur; // begin and end of "d" line + char *tp; + int cnt, ro, co; + + beg_cur = begin_line(d); // first char of cur line + + if (beg_cur < screenbegin) { + // "d" is before top line on screen + // how many lines do we have to move + cnt = count_lines(beg_cur, screenbegin); + sc1: + screenbegin = beg_cur; + if (cnt > (rows - 1) / 2) { + // we moved too many lines. put "dot" in middle of screen + for (cnt = 0; cnt < (rows - 1) / 2; cnt++) { + screenbegin = prev_line(screenbegin); + } + } + } else { + char *end_scr; // begin and end of screen + end_scr = end_screen(); // last char of screen + if (beg_cur > end_scr) { + // "d" is after bottom line on screen + // how many lines do we have to move + cnt = count_lines(end_scr, beg_cur); + if (cnt > (rows - 1) / 2) + goto sc1; // too many lines + for (ro = 0; ro < cnt - 1; ro++) { + // move screen begin the same amount + screenbegin = next_line(screenbegin); + // now, move the end of screen + end_scr = next_line(end_scr); + end_scr = end_line(end_scr); + } + } + } + // "d" is on screen- find out which row + tp = screenbegin; + for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row + if (tp == beg_cur) + break; + tp = next_line(tp); + } + + // find out what col "d" is on + co = 0; + do { // drive "co" to correct column + if (*tp == '\n') //vda || *tp == '\0') + break; + co = next_column(*tp, co) - 1; + // inserting text before a tab, don't include its position + if (cmd_mode && tp == d - 1 && *d == '\t') { + co++; + break; + } + } while (tp++ < d && ++co); + + // "co" is the column where "dot" is. + // The screen has "columns" columns. + // The currently displayed columns are 0+offset -- columns+ofset + // |-------------------------------------------------------------| + // ^ ^ ^ + // offset | |------- columns ----------------| + // + // If "co" is already in this range then we do not have to adjust offset + // but, we do have to subtract the "offset" bias from "co". + // If "co" is outside this range then we have to change "offset". + // If the first char of a line is a tab the cursor will try to stay + // in column 7, but we have to set offset to 0. + + if (co < 0 + offset) { + offset = co; + } + if (co >= columns + offset) { + offset = co - columns + 1; + } + // if the first char of the line is a tab, and "dot" is sitting on it + // force offset to 0. + if (d == beg_cur && *d == '\t') { + offset = 0; + } + co -= offset; + + *row = ro; + *col = co; +} + +//----- Format a text[] line into a buffer --------------------- +static char* format_line(char *src /*, int li*/) +{ + unsigned char c; + int co; + int ofs = offset; + char *dest = scr_out_buf; // [MAX_SCR_COLS + MAX_TABSTOP * 2] + + c = '~'; // char in col 0 in non-existent lines is '~' + co = 0; + while (co < columns + tabstop) { + // have we gone past the end? + if (src < end) { + c = *src++; + if (c == '\n') + break; + if ((c & 0x80) && !Isprint(c)) { + c = '.'; + } + if (c < ' ' || c == 0x7f) { + if (c == '\t') { + c = ' '; + // co % 8 != 7 + while ((co % tabstop) != (tabstop - 1)) { + dest[co++] = c; + } + } else { + dest[co++] = '^'; + if (c == 0x7f) + c = '?'; + else + c += '@'; // Ctrl-X -> 'X' + } + } + } + dest[co++] = c; + // discard scrolled-off-to-the-left portion, + // in tabstop-sized pieces + if (ofs >= tabstop && co >= tabstop) { + memmove(dest, dest + tabstop, co); + co -= tabstop; + ofs -= tabstop; + } + if (src >= end) + break; + } + // check "short line, gigantic offset" case + if (co < ofs) + ofs = co; + // discard last scrolled off part + co -= ofs; + dest += ofs; + // fill the rest with spaces + if (co < columns) + memset(&dest[co], ' ', columns - co); + return dest; +} + +//----- Refresh the changed screen lines ----------------------- +// Copy the source line from text[] into the buffer and note +// if the current screenline is different from the new buffer. +// If they differ then that line needs redrawing on the terminal. +// +static void refresh(int full_screen) +{ +#define old_offset refresh__old_offset + + int li, changed; + char *tp, *sp; // pointer into text[] and screen[] + + if (ENABLE_FEATURE_VI_WIN_RESIZE IF_FEATURE_VI_ASK_TERMINAL(&& !G.get_rowcol_error) ) { + unsigned c = columns, r = rows; + query_screen_dimensions(); +#if ENABLE_FEATURE_VI_USE_SIGNALS + full_screen |= (c - columns) | (r - rows); +#else + if (c != columns || r != rows) { + full_screen = TRUE; + // update screen memory since SIGWINCH won't have done it + new_screen(rows, columns); + } +#endif + } + sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot") + tp = screenbegin; // index into text[] of top line + + // compare text[] to screen[] and mark screen[] lines that need updating + for (li = 0; li < rows - 1; li++) { + int cs, ce; // column start & end + char *out_buf; + // format current text line + out_buf = format_line(tp /*, li*/); + + // skip to the end of the current text[] line + if (tp < end) { + char *t = memchr(tp, '\n', end - tp); + if (!t) t = end - 1; + tp = t + 1; + } + + // see if there are any changes between virtual screen and out_buf + changed = FALSE; // assume no change + cs = 0; + ce = columns - 1; + sp = &screen[li * columns]; // start of screen line + if (full_screen) { + // force re-draw of every single column from 0 - columns-1 + goto re0; + } + // compare newly formatted buffer with virtual screen + // look forward for first difference between buf and screen + for (; cs <= ce; cs++) { + if (out_buf[cs] != sp[cs]) { + changed = TRUE; // mark for redraw + break; + } + } + + // look backward for last difference between out_buf and screen + for (; ce >= cs; ce--) { + if (out_buf[ce] != sp[ce]) { + changed = TRUE; // mark for redraw + break; + } + } + // now, cs is index of first diff, and ce is index of last diff + + // if horz offset has changed, force a redraw + if (offset != old_offset) { + re0: + changed = TRUE; + } + + // make a sanity check of columns indexes + if (cs < 0) cs = 0; + if (ce > columns - 1) ce = columns - 1; + if (cs > ce) { cs = 0; ce = columns - 1; } + // is there a change between virtual screen and out_buf + if (changed) { + // copy changed part of buffer to virtual screen + memcpy(sp+cs, out_buf+cs, ce-cs+1); + place_cursor(li, cs); + // write line out to terminal + fwrite(&sp[cs], ce - cs + 1, 1, stdout); + } + } + + place_cursor(crow, ccol); + + if (!keep_index) + cindex = ccol + offset; + + old_offset = offset; +#undef old_offset +} + +//----- Force refresh of all Lines ----------------------------- +static void redraw(int full_screen) +{ + // cursor to top,left; clear to the end of screen + write1(ESC_SET_CURSOR_TOPLEFT ESC_CLEAR2EOS); + screen_erase(); // erase the internal screen buffer + last_status_cksum = 0; // force status update + refresh(full_screen); // this will redraw the entire display + show_status_line(); +} + +//----- Flash the screen -------------------------------------- +static void flash(int h) +{ + standout_start(); + redraw(TRUE); + mysleep(h); + standout_end(); + redraw(TRUE); +} + +static void indicate_error(void) +{ +#if ENABLE_FEATURE_VI_CRASHME + if (crashme > 0) + return; +#endif + cmd_error = TRUE; + if (!err_method) { + write1(ESC_BELL); + } else { + flash(10); + } +} + +//----- IO Routines -------------------------------------------- +static int readit(void) // read (maybe cursor) key from stdin +{ + int c; + + fflush_all(); + + // Wait for input. TIMEOUT = -1 makes read_key wait even + // on nonblocking stdin. + // Note: read_key sets errno to 0 on success. + again: + c = safe_read_key(STDIN_FILENO, readbuffer, /*timeout:*/ -1); + if (c == -1) { // EOF/error + if (errno == EAGAIN) // paranoia + goto again; + go_bottom_and_clear_to_eol(); + cookmode(); // terminal to "cooked" + bb_simple_error_msg_and_die("can't read user input"); + } + return c; +} + +#if ENABLE_FEATURE_VI_DOT_CMD +static int get_one_char(void) +{ + int c; + + if (!adding2q) { + // we are not adding to the q. + // but, we may be reading from a saved q. + // (checking "ioq" for NULL is wrong, it's not reset to NULL + // when done - "ioq_start" is reset instead). + if (ioq_start != NULL) { + // there is a queue to get chars from. + // careful with correct sign expansion! + c = (unsigned char)*ioq++; + if (c != '\0') + return c; + // the end of the q + free(ioq_start); + ioq_start = NULL; + // read from STDIN: + } + return readit(); + } + // we are adding STDIN chars to q. + c = readit(); + if (lmc_len >= ARRAY_SIZE(last_modifying_cmd) - 2) { + // last_modifying_cmd[] is too small, can't remember the cmd + // - drop it + adding2q = 0; + lmc_len = 0; + } else { + last_modifying_cmd[lmc_len++] = c; + } + return c; +} +#else +# define get_one_char() readit() +#endif + +// Get type of thing to operate on and adjust count +static int get_motion_char(void) +{ + int c, cnt; + + c = get_one_char(); + if (isdigit(c)) { + if (c != '0') { + // get any non-zero motion count + for (cnt = 0; isdigit(c); c = get_one_char()) + cnt = cnt * 10 + (c - '0'); + cmdcnt = (cmdcnt ?: 1) * cnt; + } else { + // ensure standalone '0' works + cmdcnt = 0; + } + } + + return c; +} + +// Get input line (uses "status line" area) +static char *get_input_line(const char *prompt) +{ + // char [MAX_INPUT_LEN] +#define buf get_input_line__buf + + int c; + int i; + + strcpy(buf, prompt); + last_status_cksum = 0; // force status update + go_bottom_and_clear_to_eol(); + write1(buf); // write out the :, /, or ? prompt + + i = strlen(buf); + while (i < MAX_INPUT_LEN - 1) { + c = get_one_char(); + if (c == '\n' || c == '\r' || c == 27) + break; // this is end of input + if (isbackspace(c)) { + // user wants to erase prev char + buf[--i] = '\0'; + go_bottom_and_clear_to_eol(); + if (i <= 0) // user backs up before b-o-l, exit + break; + write1(buf); + } else if (c > 0 && c < 256) { // exclude Unicode + // (TODO: need to handle Unicode) + buf[i] = c; + buf[++i] = '\0'; + bb_putchar(c); + } + } + refresh(FALSE); + return buf; +#undef buf +} + +static void Hit_Return(void) +{ + int c; + + standout_start(); + write1("[Hit return to continue]"); + standout_end(); + while ((c = get_one_char()) != '\n' && c != '\r') + continue; + redraw(TRUE); // force redraw all +} + +//----- Draw the status line at bottom of the screen ------------- +// show file status on status line +static int format_edit_status(void) +{ + static const char cmd_mode_indicator[] ALIGN1 = "-IR-"; + +#define tot format_edit_status__tot + + int cur, percent, ret, trunc_at; + + // modified_count is now a counter rather than a flag. this + // helps reduce the amount of line counting we need to do. + // (this will cause a mis-reporting of modified status + // once every MAXINT editing operations.) + + // it would be nice to do a similar optimization here -- if + // we haven't done a motion that could have changed which line + // we're on, then we shouldn't have to do this count_lines() + cur = count_lines(text, dot); + + // count_lines() is expensive. + // Call it only if something was changed since last time + // we were here: + if (modified_count != last_modified_count) { + tot = cur + count_lines(dot, end - 1) - 1; + last_modified_count = modified_count; + } + + // current line percent + // ------------- ~~ ---------- + // total lines 100 + if (tot > 0) { + percent = (100 * cur) / tot; + } else { + cur = tot = 0; + percent = 100; + } + + trunc_at = columns < STATUS_BUFFER_LEN-1 ? + columns : STATUS_BUFFER_LEN-1; + + ret = snprintf(status_buffer, trunc_at+1, +#if ENABLE_FEATURE_VI_READONLY + "%c %s%s%s %d/%d %d%%", +#else + "%c %s%s %d/%d %d%%", +#endif + cmd_mode_indicator[cmd_mode & 3], + (current_filename != NULL ? current_filename : "No file"), +#if ENABLE_FEATURE_VI_READONLY + (readonly_mode ? " [Readonly]" : ""), +#endif + (modified_count ? " [Modified]" : ""), + cur, tot, percent); + + if (ret >= 0 && ret < trunc_at) + return ret; // it all fit + + return trunc_at; // had to truncate +#undef tot +} + +static int bufsum(char *buf, int count) +{ + int sum = 0; + char *e = buf + count; + while (buf < e) + sum += (unsigned char) *buf++; + return sum; +} + +static void show_status_line(void) +{ + int cnt = 0, cksum = 0; + + // either we already have an error or status message, or we + // create one. + if (!have_status_msg) { + cnt = format_edit_status(); + cksum = bufsum(status_buffer, cnt); + } + if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) { + last_status_cksum = cksum; // remember if we have seen this line + go_bottom_and_clear_to_eol(); + write1(status_buffer); + if (have_status_msg) { + if (((int)strlen(status_buffer) - (have_status_msg - 1)) > + (columns - 1) ) { + have_status_msg = 0; + Hit_Return(); + } + have_status_msg = 0; + } + place_cursor(crow, ccol); // put cursor back in correct place + } + fflush_all(); +} + +//----- format the status buffer, the bottom line of screen ------ +static void status_line(const char *format, ...) +{ + va_list args; + + va_start(args, format); + vsnprintf(status_buffer, STATUS_BUFFER_LEN, format, args); + va_end(args); + + have_status_msg = 1; +} +static void status_line_bold(const char *format, ...) +{ + va_list args; + + va_start(args, format); + strcpy(status_buffer, ESC_BOLD_TEXT); + vsnprintf(status_buffer + (sizeof(ESC_BOLD_TEXT)-1), + STATUS_BUFFER_LEN - sizeof(ESC_BOLD_TEXT) - sizeof(ESC_NORM_TEXT), + format, args + ); + strcat(status_buffer, ESC_NORM_TEXT); + va_end(args); + + have_status_msg = 1 + (sizeof(ESC_BOLD_TEXT)-1) + (sizeof(ESC_NORM_TEXT)-1); +} +static void status_line_bold_errno(const char *fn) +{ + status_line_bold("'%s' "STRERROR_FMT, fn STRERROR_ERRNO); +} + +// copy s to buf, convert unprintable +static void print_literal(char *buf, const char *s) +{ + char *d; + unsigned char c; + + if (!s[0]) + s = "(NULL)"; + + d = buf; + for (; *s; s++) { + c = *s; + if ((c & 0x80) && !Isprint(c)) + c = '?'; + if (c < ' ' || c == 0x7f) { + *d++ = '^'; + c |= '@'; // 0x40 + if (c == 0x7f) + c = '?'; + } + *d++ = c; + *d = '\0'; + if (d - buf > MAX_INPUT_LEN - 10) // paranoia + break; + } +} +static void not_implemented(const char *s) +{ + char buf[MAX_INPUT_LEN]; + print_literal(buf, s); + status_line_bold("'%s' is not implemented", buf); +} + +//----- Block insert/delete, undo ops -------------------------- +#if ENABLE_FEATURE_VI_YANKMARK +// copy text into a register +static char *text_yank(char *p, char *q, int dest, int buftype) +{ + char *oldreg = reg[dest]; + int cnt = q - p; + if (cnt < 0) { // they are backwards- reverse them + p = q; + cnt = -cnt; + } + // Don't free register yet. This prevents the memory allocator + // from reusing the free block so we can detect if it's changed. + reg[dest] = xstrndup(p, cnt + 1); + regtype[dest] = buftype; + free(oldreg); + return p; +} + +static char what_reg(void) +{ + char c; + + c = 'D'; // default to D-reg + if (YDreg <= 25) + c = 'a' + (char) YDreg; + if (YDreg == 26) + c = 'D'; + if (YDreg == 27) + c = 'U'; + return c; +} + +static void check_context(char cmd) +{ + // Certain movement commands update the context. + if (strchr(":%{}'GHLMz/?Nn", cmd) != NULL) { + mark[27] = mark[26]; // move cur to prev + mark[26] = dot; // move local to cur + } +} + +static char *swap_context(char *p) // goto new context for '' command make this the current context +{ + char *tmp; + + // the current context is in mark[26] + // the previous context is in mark[27] + // only swap context if other context is valid + if (text <= mark[27] && mark[27] <= end - 1) { + tmp = mark[27]; + mark[27] = p; + mark[26] = p = tmp; + } + return p; +} + +# if ENABLE_FEATURE_VI_VERBOSE_STATUS +static void yank_status(const char *op, const char *p, int cnt) +{ + int lines, chars; + + lines = chars = 0; + while (*p) { + ++chars; + if (*p++ == '\n') + ++lines; + } + status_line("%s %d lines (%d chars) from [%c]", + op, lines * cnt, chars * cnt, what_reg()); +} +# endif +#endif /* FEATURE_VI_YANKMARK */ + +#if ENABLE_FEATURE_VI_UNDO +static void undo_push(char *, unsigned, int); +#endif + +// open a hole in text[] +// might reallocate text[]! use p += text_hole_make(p, ...), +// and be careful to not use pointers into potentially freed text[]! +static uintptr_t text_hole_make(char *p, int size) // at "p", make a 'size' byte hole +{ + uintptr_t bias = 0; + + if (size <= 0) + return bias; + end += size; // adjust the new END + if (end >= (text + text_size)) { + char *new_text; + text_size += end - (text + text_size) + 10240; + new_text = xrealloc(text, text_size); + bias = (new_text - text); + screenbegin += bias; + dot += bias; + end += bias; + p += bias; +#if ENABLE_FEATURE_VI_YANKMARK + { + int i; + for (i = 0; i < ARRAY_SIZE(mark); i++) + if (mark[i]) + mark[i] += bias; + } +#endif + text = new_text; + } + memmove(p + size, p, end - size - p); + memset(p, ' ', size); // clear new hole + return bias; +} + +// close a hole in text[] - delete "p" through "q", inclusive +// "undo" value indicates if this operation should be undo-able +#if !ENABLE_FEATURE_VI_UNDO +#define text_hole_delete(a,b,c) text_hole_delete(a,b) +#endif +static char *text_hole_delete(char *p, char *q, int undo) +{ + char *src, *dest; + int cnt, hole_size; + + // move forwards, from beginning + // assume p <= q + src = q + 1; + dest = p; + if (q < p) { // they are backward- swap them + src = p + 1; + dest = q; + } + hole_size = q - p + 1; + cnt = end - src; +#if ENABLE_FEATURE_VI_UNDO + switch (undo) { + case NO_UNDO: + break; + case ALLOW_UNDO: + undo_push(p, hole_size, UNDO_DEL); + break; + case ALLOW_UNDO_CHAIN: + undo_push(p, hole_size, UNDO_DEL_CHAIN); + break; +# if ENABLE_FEATURE_VI_UNDO_QUEUE + case ALLOW_UNDO_QUEUED: + undo_push(p, hole_size, UNDO_DEL_QUEUED); + break; +# endif + } + modified_count--; +#endif + if (src < text || src > end) + goto thd0; + if (dest < text || dest >= end) + goto thd0; + modified_count++; + if (src >= end) + goto thd_atend; // just delete the end of the buffer + memmove(dest, src, cnt); + thd_atend: + end = end - hole_size; // adjust the new END + if (dest >= end) + dest = end - 1; // make sure dest in below end-1 + if (end <= text) + dest = end = text; // keep pointers valid + thd0: + return dest; +} + +#if ENABLE_FEATURE_VI_UNDO + +# if ENABLE_FEATURE_VI_UNDO_QUEUE +// Flush any queued objects to the undo stack +static void undo_queue_commit(void) +{ + // Pushes the queue object onto the undo stack + if (undo_q > 0) { + // Deleted character undo events grow from the end + undo_push(undo_queue + CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q, + undo_q, + (undo_queue_state | UNDO_USE_SPOS) + ); + undo_queue_state = UNDO_EMPTY; + undo_q = 0; + } +} +# else +# define undo_queue_commit() ((void)0) +# endif + +static void flush_undo_data(void) +{ + struct undo_object *undo_entry; + + while (undo_stack_tail) { + undo_entry = undo_stack_tail; + undo_stack_tail = undo_entry->prev; + free(undo_entry); + } +} + +// Undo functions and hooks added by Jody Bruchon (jody@jodybruchon.com) +// Add to the undo stack +static void undo_push(char *src, unsigned length, int u_type) +{ + struct undo_object *undo_entry; +# if ENABLE_FEATURE_VI_UNDO_QUEUE + int use_spos = u_type & UNDO_USE_SPOS; +# endif + + // "u_type" values + // UNDO_INS: insertion, undo will remove from buffer + // UNDO_DEL: deleted text, undo will restore to buffer + // UNDO_{INS,DEL}_CHAIN: Same as above but also calls undo_pop() when complete + // The CHAIN operations are for handling multiple operations that the user + // performs with a single action, i.e. REPLACE mode or find-and-replace commands + // UNDO_{INS,DEL}_QUEUED: If queuing feature is enabled, allow use of the queue + // for the INS/DEL operation. + // UNDO_{INS,DEL} ORed with UNDO_USE_SPOS: commit the undo queue + +# if ENABLE_FEATURE_VI_UNDO_QUEUE + // This undo queuing functionality groups multiple character typing or backspaces + // into a single large undo object. This greatly reduces calls to malloc() for + // single-character operations while typing and has the side benefit of letting + // an undo operation remove chunks of text rather than a single character. + switch (u_type) { + case UNDO_EMPTY: // Just in case this ever happens... + return; + case UNDO_DEL_QUEUED: + if (length != 1) + return; // Only queue single characters + switch (undo_queue_state) { + case UNDO_EMPTY: + undo_queue_state = UNDO_DEL; + case UNDO_DEL: + undo_queue_spos = src; + undo_q++; + undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q] = *src; + // If queue is full, dump it into an object + if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX) + undo_queue_commit(); + return; + case UNDO_INS: + // Switch from storing inserted text to deleted text + undo_queue_commit(); + undo_push(src, length, UNDO_DEL_QUEUED); + return; + } + break; + case UNDO_INS_QUEUED: + if (length < 1) + return; + switch (undo_queue_state) { + case UNDO_EMPTY: + undo_queue_state = UNDO_INS; + undo_queue_spos = src; + case UNDO_INS: + while (length--) { + undo_q++; // Don't need to save any data for insertions + if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX) + undo_queue_commit(); + } + return; + case UNDO_DEL: + // Switch from storing deleted text to inserted text + undo_queue_commit(); + undo_push(src, length, UNDO_INS_QUEUED); + return; + } + break; + } + u_type &= ~UNDO_USE_SPOS; +# endif + + // Allocate a new undo object + if (u_type == UNDO_DEL || u_type == UNDO_DEL_CHAIN) { + // For UNDO_DEL objects, save deleted text + if ((text + length) == end) + length--; + // If this deletion empties text[], strip the newline. When the buffer becomes + // zero-length, a newline is added back, which requires this to compensate. + undo_entry = xzalloc(offsetof(struct undo_object, undo_text) + length); + memcpy(undo_entry->undo_text, src, length); + } else { + undo_entry = xzalloc(sizeof(*undo_entry)); + } + undo_entry->length = length; +# if ENABLE_FEATURE_VI_UNDO_QUEUE + if (use_spos) { + undo_entry->start = undo_queue_spos - text; // use start position from queue + } else { + undo_entry->start = src - text; // use offset from start of text buffer + } +# else + undo_entry->start = src - text; +# endif + undo_entry->u_type = u_type; + + // Push it on undo stack + undo_entry->prev = undo_stack_tail; + undo_stack_tail = undo_entry; + modified_count++; +} + +static void undo_push_insert(char *p, int len, int undo) +{ + switch (undo) { + case ALLOW_UNDO: + undo_push(p, len, UNDO_INS); + break; + case ALLOW_UNDO_CHAIN: + undo_push(p, len, UNDO_INS_CHAIN); + break; +# if ENABLE_FEATURE_VI_UNDO_QUEUE + case ALLOW_UNDO_QUEUED: + undo_push(p, len, UNDO_INS_QUEUED); + break; +# endif + } +} + +// Undo the last operation +static void undo_pop(void) +{ + int repeat; + char *u_start, *u_end; + struct undo_object *undo_entry; + + // Commit pending undo queue before popping (should be unnecessary) + undo_queue_commit(); + + undo_entry = undo_stack_tail; + // Check for an empty undo stack + if (!undo_entry) { + status_line("Already at oldest change"); + return; + } + + switch (undo_entry->u_type) { + case UNDO_DEL: + case UNDO_DEL_CHAIN: + // make hole and put in text that was deleted; deallocate text + u_start = text + undo_entry->start; + text_hole_make(u_start, undo_entry->length); + memcpy(u_start, undo_entry->undo_text, undo_entry->length); +# if ENABLE_FEATURE_VI_VERBOSE_STATUS + status_line("Undo [%d] %s %d chars at position %d", + modified_count, "restored", + undo_entry->length, undo_entry->start + ); +# endif + break; + case UNDO_INS: + case UNDO_INS_CHAIN: + // delete what was inserted + u_start = undo_entry->start + text; + u_end = u_start - 1 + undo_entry->length; + text_hole_delete(u_start, u_end, NO_UNDO); +# if ENABLE_FEATURE_VI_VERBOSE_STATUS + status_line("Undo [%d] %s %d chars at position %d", + modified_count, "deleted", + undo_entry->length, undo_entry->start + ); +# endif + break; + } + repeat = 0; + switch (undo_entry->u_type) { + // If this is the end of a chain, lower modification count and refresh display + case UNDO_DEL: + case UNDO_INS: + dot = (text + undo_entry->start); + refresh(FALSE); + break; + case UNDO_DEL_CHAIN: + case UNDO_INS_CHAIN: + repeat = 1; + break; + } + // Deallocate the undo object we just processed + undo_stack_tail = undo_entry->prev; + free(undo_entry); + modified_count--; + // For chained operations, continue popping all the way down the chain. + if (repeat) { + undo_pop(); // Follow the undo chain if one exists + } +} + +#else +# define flush_undo_data() ((void)0) +# define undo_queue_commit() ((void)0) +#endif /* ENABLE_FEATURE_VI_UNDO */ + +//----- Dot Movement Routines ---------------------------------- +static void dot_left(void) +{ + undo_queue_commit(); + if (dot > text && dot[-1] != '\n') + dot--; +} + +static void dot_right(void) +{ + undo_queue_commit(); + if (dot < end - 1 && *dot != '\n') + dot++; +} + +static void dot_begin(void) +{ + undo_queue_commit(); + dot = begin_line(dot); // return pointer to first char cur line +} + +static void dot_end(void) +{ + undo_queue_commit(); + dot = end_line(dot); // return pointer to last char cur line +} + +static char *move_to_col(char *p, int l) +{ + int co; + + p = begin_line(p); + co = 0; + do { + if (*p == '\n') //vda || *p == '\0') + break; + co = next_column(*p, co); + } while (co <= l && p++ < end); + return p; +} + +static void dot_next(void) +{ + undo_queue_commit(); + dot = next_line(dot); +} + +static void dot_prev(void) +{ + undo_queue_commit(); + dot = prev_line(dot); +} + +static void dot_skip_over_ws(void) +{ + // skip WS + while (isspace(*dot) && *dot != '\n' && dot < end - 1) + dot++; +} + +static void dot_to_char(int cmd) +{ + char *q = dot; + int dir = islower(cmd) ? FORWARD : BACK; + + if (last_search_char == 0) + return; + + do { + do { + q += dir; + if ((dir == FORWARD ? q > end - 1 : q < text) || *q == '\n') { + indicate_error(); + return; + } + } while (*q != last_search_char); + } while (--cmdcnt > 0); + + dot = q; + + // place cursor before/after char as required + if (cmd == 't') + dot_left(); + else if (cmd == 'T') + dot_right(); +} + +static void dot_scroll(int cnt, int dir) +{ + char *q; + + undo_queue_commit(); + for (; cnt > 0; cnt--) { + if (dir < 0) { + // scroll Backwards + // ctrl-Y scroll up one line + screenbegin = prev_line(screenbegin); + } else { + // scroll Forwards + // ctrl-E scroll down one line + screenbegin = next_line(screenbegin); + } + } + // make sure "dot" stays on the screen so we dont scroll off + if (dot < screenbegin) + dot = screenbegin; + q = end_screen(); // find new bottom line + if (dot > q) + dot = begin_line(q); // is dot is below bottom line? + dot_skip_over_ws(); +} + +static char *bound_dot(char *p) // make sure text[0] <= P < "end" +{ + if (p >= end && end > text) { + p = end - 1; + indicate_error(); + } + if (p < text) { + p = text; + indicate_error(); + } + return p; +} + +#if ENABLE_FEATURE_VI_DOT_CMD +static void start_new_cmd_q(char c) +{ + // get buffer for new cmd + dotcnt = cmdcnt ?: 1; + last_modifying_cmd[0] = c; + lmc_len = 1; + adding2q = 1; +} +static void end_cmd_q(void) +{ +# if ENABLE_FEATURE_VI_YANKMARK + YDreg = 26; // go back to default Yank/Delete reg +# endif + adding2q = 0; +} +#else +# define end_cmd_q() ((void)0) +#endif /* FEATURE_VI_DOT_CMD */ + +// copy text into register, then delete text. +// +#if !ENABLE_FEATURE_VI_UNDO +#define yank_delete(a,b,c,d,e) yank_delete(a,b,c,d) +#endif +static char *yank_delete(char *start, char *stop, int buftype, int yf, int undo) +{ + char *p; + + // make sure start <= stop + if (start > stop) { + // they are backwards, reverse them + p = start; + start = stop; + stop = p; + } + if (buftype == PARTIAL && *start == '\n') + return start; + p = start; +#if ENABLE_FEATURE_VI_YANKMARK + text_yank(start, stop, YDreg, buftype); +#endif + if (yf == YANKDEL) { + p = text_hole_delete(start, stop, undo); + } // delete lines + return p; +} + +// might reallocate text[]! +static int file_insert(const char *fn, char *p, int initial) +{ + int cnt = -1; + int fd, size; + struct stat statbuf; + + if (p < text) + p = text; + if (p > end) + p = end; + + fd = open(fn, O_RDONLY); + if (fd < 0) { + if (!initial) + status_line_bold_errno(fn); + return cnt; + } + + // Validate file + if (fstat(fd, &statbuf) < 0) { + status_line_bold_errno(fn); + goto fi; + } + if (!S_ISREG(statbuf.st_mode)) { + status_line_bold("'%s' is not a regular file", fn); + goto fi; + } + size = (statbuf.st_size < INT_MAX ? (int)statbuf.st_size : INT_MAX); + p += text_hole_make(p, size); + cnt = full_read(fd, p, size); + if (cnt < 0) { + status_line_bold_errno(fn); + p = text_hole_delete(p, p + size - 1, NO_UNDO); // un-do buffer insert + } else if (cnt < size) { + // There was a partial read, shrink unused space + p = text_hole_delete(p + cnt, p + size - 1, NO_UNDO); + status_line_bold("can't read '%s'", fn); + } +# if ENABLE_FEATURE_VI_UNDO + else { + undo_push_insert(p, size, ALLOW_UNDO); + } +# endif + fi: + close(fd); + +#if ENABLE_FEATURE_VI_READONLY + if (initial + && ((access(fn, W_OK) < 0) || + // root will always have access() + // so we check fileperms too + !(statbuf.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)) + ) + ) { + SET_READONLY_FILE(readonly_mode); + } +#endif + return cnt; +} + +// find matching char of pair () [] {} +// will crash if c is not one of these +static char *find_pair(char *p, const char c) +{ + const char *braces = "()[]{}"; + char match; + int dir, level; + + dir = strchr(braces, c) - braces; + dir ^= 1; + match = braces[dir]; + dir = ((dir & 1) << 1) - 1; // 1 for ([{, -1 for )\} + + // look for match, count levels of pairs (( )) + level = 1; + for (;;) { + p += dir; + if (p < text || p >= end) + return NULL; + if (*p == c) + level++; // increase pair levels + if (*p == match) { + level--; // reduce pair level + if (level == 0) + return p; // found matching pair + } + } +} + +#if ENABLE_FEATURE_VI_SETOPTS +// show the matching char of a pair, () [] {} +static void showmatching(char *p) +{ + char *q, *save_dot; + + // we found half of a pair + q = find_pair(p, *p); // get loc of matching char + if (q == NULL) { + indicate_error(); // no matching char + } else { + // "q" now points to matching pair + save_dot = dot; // remember where we are + dot = q; // go to new loc + refresh(FALSE); // let the user see it + mysleep(40); // give user some time + dot = save_dot; // go back to old loc + refresh(FALSE); + } +} +#endif /* FEATURE_VI_SETOPTS */ + +// might reallocate text[]! use p += stupid_insert(p, ...), +// and be careful to not use pointers into potentially freed text[]! +static uintptr_t stupid_insert(char *p, char c) // stupidly insert the char c at 'p' +{ + uintptr_t bias; + bias = text_hole_make(p, 1); + p += bias; + *p = c; + return bias; +} + +// find number of characters in indent, p must be at beginning of line +static size_t indent_len(char *p) +{ + char *r = p; + + while (r < (end - 1) && isblank(*r)) + r++; + return r - p; +} + +#if !ENABLE_FEATURE_VI_UNDO +#define char_insert(a,b,c) char_insert(a,b) +#endif +static char *char_insert(char *p, char c, int undo) // insert the char c at 'p' +{ +#if ENABLE_FEATURE_VI_SETOPTS +# define indentcol char_insert__indentcol + size_t len; + int col, ntab, nspc; +#endif + char *bol = begin_line(p); + + if (c == 22) { // Is this an ctrl-V? + p += stupid_insert(p, '^'); // use ^ to indicate literal next + refresh(FALSE); // show the ^ + c = get_one_char(); + *p = c; +#if ENABLE_FEATURE_VI_UNDO + undo_push_insert(p, 1, undo); +#else + modified_count++; +#endif + p++; + } else if (c == 27) { // Is this an ESC? + cmd_mode = 0; + undo_queue_commit(); + cmdcnt = 0; + end_cmd_q(); // stop adding to q + last_status_cksum = 0; // force status update + if ((dot > text) && (p[-1] != '\n')) { + p--; + } +#if ENABLE_FEATURE_VI_SETOPTS + if (autoindent) { + len = indent_len(bol); + col = get_column(bol + len); + if (len && col == indentcol && bol[len] == '\n') { + // remove autoindent from otherwise empty line + text_hole_delete(bol, bol + len - 1, undo); + p = bol; + } + } +#endif + } else if (c == 4) { // ctrl-D reduces indentation + char *r = bol + indent_len(bol); + int prev = prev_tabstop(get_column(r)); + while (r > bol && get_column(r) > prev) { + if (p > bol) + p--; + r--; + r = text_hole_delete(r, r, ALLOW_UNDO_QUEUED); + } + +#if ENABLE_FEATURE_VI_SETOPTS + if (autoindent && indentcol && r == end_line(p)) { + // record changed size of autoindent + indentcol = get_column(p); + return p; + } +#endif +#if ENABLE_FEATURE_VI_SETOPTS + } else if (c == '\t' && expandtab) { // expand tab + col = get_column(p); + col = next_tabstop(col) - col + 1; + while (col--) { +# if ENABLE_FEATURE_VI_UNDO + undo_push_insert(p, 1, undo); +# else + modified_count++; +# endif + p += 1 + stupid_insert(p, ' '); + } +#endif + } else if (isbackspace(c)) { + if (cmd_mode == 2) { + // special treatment for backspace in Replace mode + if (p > rstart) { + p--; +#if ENABLE_FEATURE_VI_UNDO + undo_pop(); +#endif + } + } else if (p > text) { + p--; + p = text_hole_delete(p, p, ALLOW_UNDO_QUEUED); // shrink buffer 1 char + } + } else { + // insert a char into text[] + if (c == 13) + c = '\n'; // translate \r to \n +#if ENABLE_FEATURE_VI_UNDO +# if ENABLE_FEATURE_VI_UNDO_QUEUE + if (c == '\n') + undo_queue_commit(); +# endif + undo_push_insert(p, 1, undo); +#else + modified_count++; +#endif + p += 1 + stupid_insert(p, c); // insert the char +#if ENABLE_FEATURE_VI_SETOPTS + if (showmatch && strchr(")]}", c) != NULL) { + showmatching(p - 1); + } + if (autoindent && c == '\n') { // auto indent the new line + if (newindent < 0) { + // use indent of previous line + bol = prev_line(p); + len = indent_len(bol); + col = get_column(bol + len); + + if (len && col == indentcol) { + // previous line was empty except for autoindent + // move the indent to the current line + memmove(bol + 1, bol, len); + *bol = '\n'; + return p; + } + } else { + // for 'O'/'cc' commands add indent before newly inserted NL + if (p != end - 1) // but not for 'cc' at EOF + p--; + col = newindent; + } + + if (col) { + // only record indent if in insert/replace mode or for + // the 'o'/'O'/'cc' commands, which are switched to + // insert mode early. + indentcol = cmd_mode != 0 ? col : 0; + if (expandtab) { + ntab = 0; + nspc = col; + } else { + ntab = col / tabstop; + nspc = col % tabstop; + } + p += text_hole_make(p, ntab + nspc); +# if ENABLE_FEATURE_VI_UNDO + undo_push_insert(p, ntab + nspc, undo); +# endif + memset(p, '\t', ntab); + p += ntab; + memset(p, ' ', nspc); + return p + nspc; + } + } +#endif + } +#if ENABLE_FEATURE_VI_SETOPTS + indentcol = 0; +# undef indentcol +#endif + return p; +} + +#if ENABLE_FEATURE_VI_COLON_EXPAND +static void init_filename(char *fn) +{ + char *copy = xstrdup(fn); + + if (current_filename == NULL) { + current_filename = copy; + } else { + free(alt_filename); + alt_filename = copy; + } +} +#else +# define init_filename(f) ((void)(0)) +#endif + +static void update_filename(char *fn) +{ +#if ENABLE_FEATURE_VI_COLON_EXPAND + if (fn == NULL) + return; + + if (current_filename == NULL || strcmp(fn, current_filename) != 0) { + free(alt_filename); + alt_filename = current_filename; + current_filename = xstrdup(fn); + } +#else + if (fn != current_filename) { + free(current_filename); + current_filename = xstrdup(fn); + } +#endif +} + +// read text from file or create an empty buf +// will also update current_filename +static int init_text_buffer(char *fn) +{ + int rc; + + // allocate/reallocate text buffer + free(text); + text_size = 10240; + screenbegin = dot = end = text = xzalloc(text_size); + + update_filename(fn); + rc = file_insert(fn, text, 1); + if (rc <= 0 || *(end - 1) != '\n') { + // file doesn't exist or doesn't end in a newline. + // insert a newline to the end + char_insert(end, '\n', NO_UNDO); + } + + flush_undo_data(); + modified_count = 0; + last_modified_count = -1; +#if ENABLE_FEATURE_VI_YANKMARK + // init the marks + memset(mark, 0, sizeof(mark)); +#endif + return rc; +} + +#if ENABLE_FEATURE_VI_YANKMARK \ + || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \ + || ENABLE_FEATURE_VI_CRASHME +// might reallocate text[]! use p += string_insert(p, ...), +// and be careful to not use pointers into potentially freed text[]! +# if !ENABLE_FEATURE_VI_UNDO +# define string_insert(a,b,c) string_insert(a,b) +# endif +static uintptr_t string_insert(char *p, const char *s, int undo) // insert the string at 'p' +{ + uintptr_t bias; + int i; + + i = strlen(s); +#if ENABLE_FEATURE_VI_UNDO + undo_push_insert(p, i, undo); +#endif + bias = text_hole_make(p, i); + p += bias; + memcpy(p, s, i); + return bias; +} +#endif + +static int file_write(char *fn, char *first, char *last) +{ + int fd, cnt, charcnt; + + if (fn == 0) { + status_line_bold("No current filename"); + return -2; + } + // By popular request we do not open file with O_TRUNC, + // but instead ftruncate() it _after_ successful write. + // Might reduce amount of data lost on power fail etc. + fd = open(fn, (O_WRONLY | O_CREAT), 0666); + if (fd < 0) + return -1; + cnt = last - first + 1; + charcnt = full_write(fd, first, cnt); + ftruncate(fd, charcnt); + if (charcnt == cnt) { + // good write + //modified_count = FALSE; + } else { + charcnt = 0; + } + close(fd); + return charcnt; +} + +#if ENABLE_FEATURE_VI_SEARCH +# if ENABLE_FEATURE_VI_REGEX_SEARCH +// search for pattern starting at p +static char *char_search(char *p, const char *pat, int dir_and_range) +{ + struct re_pattern_buffer preg; + const char *err; + char *q; + int i, size, range, start; + + re_syntax_options = RE_SYNTAX_POSIX_BASIC & (~RE_DOT_NEWLINE); + if (ignorecase) + re_syntax_options |= RE_ICASE; + + memset(&preg, 0, sizeof(preg)); + err = re_compile_pattern(pat, strlen(pat), &preg); + preg.not_bol = p != text; + preg.not_eol = p != end - 1; + if (err != NULL) { + status_line_bold("bad search pattern '%s': %s", pat, err); + return p; + } + + range = (dir_and_range & 1); + q = end - 1; // if FULL + if (range == LIMITED) + q = next_line(p); + if (dir_and_range < 0) { // BACK? + q = text; + if (range == LIMITED) + q = prev_line(p); + } + + // RANGE could be negative if we are searching backwards + range = q - p; + if (range < 0) { + size = -range; + start = size; + } else { + size = range; + start = 0; + } + q = p - start; + if (q < text) + q = text; + // search for the compiled pattern, preg, in p[] + // range < 0, start == size: search backward + // range > 0, start == 0: search forward + // re_search() < 0: not found or error + // re_search() >= 0: index of found pattern + // struct pattern char int int int struct reg + // re_search(*pattern_buffer, *string, size, start, range, *regs) + i = re_search(&preg, q, size, start, range, /*struct re_registers*:*/ NULL); + regfree(&preg); + return i < 0 ? NULL : q + i; +} +# else +# if ENABLE_FEATURE_VI_SETOPTS +static int mycmp(const char *s1, const char *s2, int len) +{ + if (ignorecase) { + return strncasecmp(s1, s2, len); + } + return strncmp(s1, s2, len); +} +# else +# define mycmp strncmp +# endif +static char *char_search(char *p, const char *pat, int dir_and_range) +{ + char *start, *stop; + int len; + int range; + + len = strlen(pat); + range = (dir_and_range & 1); + if (dir_and_range > 0) { //FORWARD? + stop = end - 1; // assume range is p..end-1 + if (range == LIMITED) + stop = next_line(p); // range is to next line + for (start = p; start < stop; start++) { + if (mycmp(start, pat, len) == 0) { + return start; + } + } + } else { //BACK + stop = text; // assume range is text..p + if (range == LIMITED) + stop = prev_line(p); // range is to prev line + for (start = p - len; start >= stop; start--) { + if (mycmp(start, pat, len) == 0) { + return start; + } + } + } + // pattern not found + return NULL; +} +# endif +#endif /* FEATURE_VI_SEARCH */ + +//----- The Colon commands ------------------------------------- +#if ENABLE_FEATURE_VI_COLON +// Evaluate colon address expression. Returns a pointer to the +// next character or NULL on error. If 'result' contains a valid +// address 'valid' is TRUE. +static char *get_one_address(char *p, int *result, int *valid) +{ + int num, sign, addr, got_addr; +# if ENABLE_FEATURE_VI_YANKMARK || ENABLE_FEATURE_VI_SEARCH + char *q, c; +# endif + IF_FEATURE_VI_SEARCH(int dir;) + + got_addr = FALSE; + addr = count_lines(text, dot); // default to current line + sign = 0; + for (;;) { + if (isblank(*p)) { + if (got_addr) { + addr += sign; + sign = 0; + } + p++; + } else if (!got_addr && *p == '.') { // the current line + p++; + //addr = count_lines(text, dot); + got_addr = TRUE; + } else if (!got_addr && *p == '$') { // the last line in file + p++; + addr = count_lines(text, end - 1); + got_addr = TRUE; + } +# if ENABLE_FEATURE_VI_YANKMARK + else if (!got_addr && *p == '\'') { // is this a mark addr + p++; + c = tolower(*p); + p++; + q = NULL; + if (c >= 'a' && c <= 'z') { + // we have a mark + c = c - 'a'; + q = mark[(unsigned char) c]; + } + if (q == NULL) { // is mark valid + status_line_bold("Mark not set"); + return NULL; + } + addr = count_lines(text, q); + got_addr = TRUE; + } +# endif +# if ENABLE_FEATURE_VI_SEARCH + else if (!got_addr && (*p == '/' || *p == '?')) { // a search pattern + c = *p; + q = strchrnul(p + 1, c); + if (p + 1 != q) { + // save copy of new pattern + free(last_search_pattern); + last_search_pattern = xstrndup(p, q - p); + } + p = q; + if (*p == c) + p++; + if (c == '/') { + q = next_line(dot); + dir = (FORWARD << 1) | FULL; + } else { + q = begin_line(dot); + dir = ((unsigned)BACK << 1) | FULL; + } + q = char_search(q, last_search_pattern + 1, dir); + if (q == NULL) { + // no match, continue from other end of file + q = char_search(dir > 0 ? text : end - 1, + last_search_pattern + 1, dir); + if (q == NULL) { + status_line_bold("Pattern not found"); + return NULL; + } + } + addr = count_lines(text, q); + got_addr = TRUE; + } +# endif + else if (isdigit(*p)) { + num = 0; + while (isdigit(*p)) + num = num * 10 + *p++ -'0'; + if (!got_addr) { // specific line number + addr = num; + got_addr = TRUE; + } else { // offset from current addr + addr += sign >= 0 ? num : -num; + } + sign = 0; + } else if (*p == '-' || *p == '+') { + if (!got_addr) { // default address is dot + //addr = count_lines(text, dot); + got_addr = TRUE; + } else { + addr += sign; + } + sign = *p++ == '-' ? -1 : 1; + } else { + addr += sign; // consume unused trailing sign + break; + } + } + *result = addr; + *valid = got_addr; + return p; +} + +# define GET_ADDRESS 0 +# define GET_SEPARATOR 1 + +// Read line addresses for a colon command. The user can enter as +// many as they like but only the last two will be used. +static char *get_address(char *p, int *b, int *e, unsigned int *got) +{ + int state = GET_ADDRESS; + int valid; + int addr; + char *save_dot = dot; + + //----- get the address' i.e., 1,3 'a,'b ----- + for (;;) { + if (isblank(*p)) { + p++; + } else if (state == GET_ADDRESS && *p == '%') { // alias for 1,$ + p++; + *b = 1; + *e = count_lines(text, end-1); + *got = 3; + state = GET_SEPARATOR; + } else if (state == GET_ADDRESS) { + valid = FALSE; + p = get_one_address(p, &addr, &valid); + // Quit on error or if the address is invalid and isn't of + // the form ',$' or '1,' (in which case it defaults to dot). + if (p == NULL || !(valid || *p == ',' || *p == ';' || *got & 1)) + break; + *b = *e; + *e = addr; + *got = (*got << 1) | 1; + state = GET_SEPARATOR; + } else if (state == GET_SEPARATOR && (*p == ',' || *p == ';')) { + if (*p == ';') + dot = find_line(*e); + p++; + state = GET_ADDRESS; + } else { + break; + } + } + dot = save_dot; + return p; +} + +# if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS +static void setops(char *args, int flg_no) +{ + char *eq; + int index; + + eq = strchr(args, '='); + if (eq) *eq = '\0'; + index = index_in_strings(OPTS_STR, args + flg_no); + if (eq) *eq = '='; + if (index < 0) { + bad: + status_line_bold("bad option: %s", args); + return; + } + + index = 1 << (index >> 1); // convert to VI_bit + + if (index & VI_TABSTOP) { + int t; + if (!eq || flg_no) // no "=NNN" or it is "notabstop"? + goto bad; + t = bb_strtou(eq + 1, NULL, 10); + if (t <= 0 || t > MAX_TABSTOP) + goto bad; + tabstop = t; + return; + } + if (eq) goto bad; // boolean option has "="? + if (flg_no) { + vi_setops &= ~index; + } else { + vi_setops |= index; + } +} +# endif + +# if ENABLE_FEATURE_VI_COLON_EXPAND +static char *expand_args(char *args) +{ + char *s, *t; + const char *replace; + + args = xstrdup(args); + for (s = args; *s; s++) { + if (*s == '%') { + replace = current_filename; + } else if (*s == '#') { + replace = alt_filename; + } else { + if (*s == '\\' && s[1] != '\0') { + for (t = s++; *t; t++) + *t = t[1]; + } + continue; + } + + if (replace == NULL) { + free(args); + status_line_bold("No previous filename"); + return NULL; + } + + *s = '\0'; + t = xasprintf("%s%s%s", args, replace, s+1); + s = t + (s - args) + strlen(replace); + free(args); + args = t; + } + return args; +} +# else +# define expand_args(a) (a) +# endif +#endif /* FEATURE_VI_COLON */ + +#if ENABLE_FEATURE_VI_REGEX_SEARCH +# define MAX_SUBPATTERN 10 // subpatterns \0 .. \9 + +// Like strchr() but skipping backslash-escaped characters +static char *strchr_backslash(const char *s, int c) +{ + while (*s) { + if (*s == c) + return (char *)s; + if (*s == '\\') + if (*++s == '\0') + break; + s++; + } + return NULL; +} + +// If the return value is not NULL the caller should free R +static char *regex_search(char *q, regex_t *preg, const char *Rorig, + size_t *len_F, size_t *len_R, char **R) +{ + regmatch_t regmatch[MAX_SUBPATTERN], *cur_match; + char *found = NULL; + const char *t; + char *r; + + regmatch[0].rm_so = 0; + regmatch[0].rm_eo = end_line(q) - q; + if (regexec(preg, q, MAX_SUBPATTERN, regmatch, REG_STARTEND) != 0) + return found; + + found = q + regmatch[0].rm_so; + *len_F = regmatch[0].rm_eo - regmatch[0].rm_so; + *R = NULL; + + fill_result: + // first pass calculates len_R, second fills R + *len_R = 0; + for (t = Rorig, r = *R; *t; t++) { + size_t len = 1; // default is to copy one char from replace pattern + const char *from = t; + if (*t == '\\') { + from = ++t; // skip backslash + if (*t >= '0' && *t < '0' + MAX_SUBPATTERN) { + cur_match = regmatch + (*t - '0'); + if (cur_match->rm_so >= 0) { + len = cur_match->rm_eo - cur_match->rm_so; + from = q + cur_match->rm_so; + } + } + } + *len_R += len; + if (*R) { + memcpy(r, from, len); + r += len; + /* *r = '\0'; - xzalloc did it */ + } + } + if (*R == NULL) { + *R = xzalloc(*len_R + 1); + goto fill_result; + } + + return found; +} +#else /* !ENABLE_FEATURE_VI_REGEX_SEARCH */ +# define strchr_backslash(s, c) strchr(s, c) +#endif /* ENABLE_FEATURE_VI_REGEX_SEARCH */ + +// buf must be no longer than MAX_INPUT_LEN! +static void colon(char *buf) +{ +#if !ENABLE_FEATURE_VI_COLON + // Simple ":cmd" handler with minimal set of commands + char *p = buf; + int cnt; + + if (*p == ':') + p++; + cnt = strlen(p); + if (cnt == 0) + return; + if (strncmp(p, "quit", cnt) == 0 + || strcmp(p, "q!") == 0 + ) { + if (modified_count && p[1] != '!') { + status_line_bold("No write since last change (:%s! overrides)", p); + } else { + editing = 0; + } + return; + } + if (strncmp(p, "write", cnt) == 0 + || strcmp(p, "wq") == 0 + || strcmp(p, "wn") == 0 + || (p[0] == 'x' && !p[1]) + ) { + if (modified_count != 0 || p[0] != 'x') { + cnt = file_write(current_filename, text, end - 1); + } + if (cnt < 0) { + if (cnt == -1) + status_line_bold("Write error: "STRERROR_FMT STRERROR_ERRNO); + } else { + modified_count = 0; + last_modified_count = -1; + status_line("'%s' %uL, %uC", + current_filename, + count_lines(text, end - 1), cnt + ); + if (p[0] == 'x' + || p[1] == 'q' || p[1] == 'n' + ) { + editing = 0; + } + } + return; + } + if (strncmp(p, "file", cnt) == 0) { + last_status_cksum = 0; // force status update + return; + } + if (sscanf(p, "%d", &cnt) > 0) { + dot = find_line(cnt); + dot_skip_over_ws(); + return; + } + not_implemented(p); +#else + +// check how many addresses we got +# define GOT_ADDRESS (got & 1) +# define GOT_RANGE ((got & 3) == 3) + + char c, *buf1, *q, *r; + char *fn, cmd[MAX_INPUT_LEN], *cmdend, *args, *exp = NULL; + int i, l, li, b, e; + unsigned int got; + int useforce; + + // :3154 // if (-e line 3154) goto it else stay put + // :4,33w! foo // write a portion of buffer to file "foo" + // :w // write all of buffer to current file + // :q // quit + // :q! // quit- dont care about modified file + // :'a,'z!sort -u // filter block through sort + // :'f // goto mark "f" + // :'fl // list literal the mark "f" line + // :.r bar // read file "bar" into buffer before dot + // :/123/,/abc/d // delete lines from "123" line to "abc" line + // :/xyz/ // goto the "xyz" line + // :s/find/replace/ // substitute pattern "find" with "replace" + // :! // run then return + // + + while (*buf == ':') + buf++; // move past leading colons + while (isblank(*buf)) + buf++; // move past leading blanks + if (!buf[0] || buf[0] == '"') + goto ret; // ignore empty lines or those starting with '"' + + li = i = 0; + b = e = -1; + got = 0; + li = count_lines(text, end - 1); + fn = current_filename; + + // look for optional address(es) :. :1 :1,9 :'q,'a :% + buf = get_address(buf, &b, &e, &got); + if (buf == NULL) { + goto ret; + } + + // get the COMMAND into cmd[] + strcpy(cmd, buf); + buf1 = cmd; + while (!isspace(*buf1) && *buf1 != '\0') { + buf1++; + } + cmdend = buf1; + // get any ARGuments + while (isblank(*buf1)) + buf1++; + args = buf1; + *cmdend = '\0'; + useforce = FALSE; + if (cmdend > cmd && cmdend[-1] == '!') { + useforce = TRUE; + cmdend[-1] = '\0'; // get rid of ! + } + // assume the command will want a range, certain commands + // (read, substitute) need to adjust these assumptions + if (!GOT_ADDRESS) { + q = text; // no addr, use 1,$ for the range + r = end - 1; + } else { + // at least one addr was given, get its details + if (e < 0 || e > li) { + status_line_bold("Invalid range"); + goto ret; + } + q = r = find_line(e); + if (!GOT_RANGE) { + // if there is only one addr, then it's the line + // number of the single line the user wants. + // Reset the end pointer to the end of that line. + r = end_line(q); + li = 1; + } else { + // we were given two addrs. change the + // start pointer to the addr given by user. + if (b < 0 || b > li || b > e) { + status_line_bold("Invalid range"); + goto ret; + } + q = find_line(b); // what line is #b + r = end_line(r); + li = e - b + 1; + } + } + // ------------ now look for the command ------------ + i = strlen(cmd); + if (i == 0) { // :123CR goto line #123 + if (e >= 0) { + dot = find_line(e); // what line is #e + dot_skip_over_ws(); + } + } +# if ENABLE_FEATURE_ALLOW_EXEC + else if (cmd[0] == '!') { // run a cmd + int retcode; + // :!ls run the + exp = expand_args(buf + 1); + if (exp == NULL) + goto ret; + go_bottom_and_clear_to_eol(); + cookmode(); + retcode = system(exp); // run the cmd + if (retcode) + printf("\nshell returned %i\n\n", retcode); + rawmode(); + Hit_Return(); // let user see results + } +# endif + else if (cmd[0] == '=' && !cmd[1]) { // where is the address + if (!GOT_ADDRESS) { // no addr given- use defaults + e = count_lines(text, dot); + } + status_line("%d", e); + } else if (strncmp(cmd, "delete", i) == 0) { // delete lines + if (!GOT_ADDRESS) { // no addr given- use defaults + q = begin_line(dot); // assume .,. for the range + r = end_line(dot); + } + dot = yank_delete(q, r, WHOLE, YANKDEL, ALLOW_UNDO); // save, then delete lines + dot_skip_over_ws(); + } else if (strncmp(cmd, "edit", i) == 0) { // Edit a file + int size; + + // don't edit, if the current file has been modified + if (modified_count && !useforce) { + status_line_bold("No write since last change (:%s! overrides)", cmd); + goto ret; + } + if (args[0]) { + // the user supplied a file name + fn = exp = expand_args(args); + if (exp == NULL) + goto ret; + } else if (current_filename == NULL) { + // no user file name, no current name- punt + status_line_bold("No current filename"); + goto ret; + } + + size = init_text_buffer(fn); + +# if ENABLE_FEATURE_VI_YANKMARK + if (Ureg >= 0 && Ureg < 28) { + free(reg[Ureg]); // free orig line reg- for 'U' + reg[Ureg] = NULL; + } + /*if (YDreg < 28) - always true*/ { + free(reg[YDreg]); // free default yank/delete register + reg[YDreg] = NULL; + } +# endif + // how many lines in text[]? + li = count_lines(text, end - 1); + status_line("'%s'%s" + IF_FEATURE_VI_READONLY("%s") + " %uL, %uC", + fn, + (size < 0 ? " [New file]" : ""), + IF_FEATURE_VI_READONLY( + ((readonly_mode) ? " [Readonly]" : ""), + ) + li, (int)(end - text) + ); + } else if (strncmp(cmd, "file", i) == 0) { // what File is this + if (e >= 0) { + status_line_bold("No address allowed on this command"); + goto ret; + } + if (args[0]) { + // user wants a new filename + exp = expand_args(args); + if (exp == NULL) + goto ret; + update_filename(exp); + } else { + // user wants file status info + last_status_cksum = 0; // force status update + } + } else if (strncmp(cmd, "features", i) == 0) { // what features are available + // print out values of all features + go_bottom_and_clear_to_eol(); + cookmode(); + show_help(); + rawmode(); + Hit_Return(); + } else if (strncmp(cmd, "list", i) == 0) { // literal print line + if (!GOT_ADDRESS) { // no addr given- use defaults + q = begin_line(dot); // assume .,. for the range + r = end_line(dot); + } + go_bottom_and_clear_to_eol(); + puts("\r"); + for (; q <= r; q++) { + int c_is_no_print; + + c = *q; + c_is_no_print = (c & 0x80) && !Isprint(c); + if (c_is_no_print) { + c = '.'; + standout_start(); + } + if (c == '\n') { + write1("$\r"); + } else if (c < ' ' || c == 127) { + bb_putchar('^'); + if (c == 127) + c = '?'; + else + c += '@'; + } + bb_putchar(c); + if (c_is_no_print) + standout_end(); + } + Hit_Return(); + } else if (strncmp(cmd, "quit", i) == 0 // quit + || strncmp(cmd, "next", i) == 0 // edit next file + || strncmp(cmd, "prev", i) == 0 // edit previous file + ) { + int n; + if (useforce) { + if (*cmd == 'q') { + // force end of argv list + optind = cmdline_filecnt; + } + editing = 0; + goto ret; + } + // don't exit if the file been modified + if (modified_count) { + status_line_bold("No write since last change (:%s! overrides)", cmd); + goto ret; + } + // are there other file to edit + n = cmdline_filecnt - optind - 1; + if (*cmd == 'q' && n > 0) { + status_line_bold("%u more file(s) to edit", n); + goto ret; + } + if (*cmd == 'n' && n <= 0) { + status_line_bold("No more files to edit"); + goto ret; + } + if (*cmd == 'p') { + // are there previous files to edit + if (optind < 1) { + status_line_bold("No previous files to edit"); + goto ret; + } + optind -= 2; + } + editing = 0; + } else if (strncmp(cmd, "read", i) == 0) { // read file into text[] + int size, num; + + if (args[0]) { + // the user supplied a file name + fn = exp = expand_args(args); + if (exp == NULL) + goto ret; + init_filename(fn); + } else if (current_filename == NULL) { + // no user file name, no current name- punt + status_line_bold("No current filename"); + goto ret; + } + if (e == 0) { // user said ":0r foo" + q = text; + } else { // read after given line or current line if none given + q = next_line(GOT_ADDRESS ? find_line(e) : dot); + // read after last line + if (q == end-1) + ++q; + } + num = count_lines(text, q); + if (q == end) + num++; + { // dance around potentially-reallocated text[] + uintptr_t ofs = q - text; + size = file_insert(fn, q, 0); + q = text + ofs; + } + if (size < 0) + goto ret; // nothing was inserted + // how many lines in text[]? + li = count_lines(q, q + size - 1); + status_line("'%s'" + IF_FEATURE_VI_READONLY("%s") + " %uL, %uC", + fn, + IF_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),) + li, size + ); + dot = find_line(num); + } else if (strncmp(cmd, "rewind", i) == 0) { // rewind cmd line args + if (modified_count && !useforce) { + status_line_bold("No write since last change (:%s! overrides)", cmd); + } else { + // reset the filenames to edit + optind = -1; // start from 0th file + editing = 0; + } +# if ENABLE_FEATURE_VI_SET + } else if (strncmp(cmd, "set", i) == 0) { // set or clear features +# if ENABLE_FEATURE_VI_SETOPTS + char *argp, *argn, oldch; +# endif + // only blank is regarded as args delimiter. What about tab '\t'? + if (!args[0] || strcmp(args, "all") == 0) { + // print out values of all options +# if ENABLE_FEATURE_VI_SETOPTS + status_line_bold( + "%sautoindent " + "%sexpandtab " + "%sflash " + "%signorecase " + "%sshowmatch " + "tabstop=%u", + autoindent ? "" : "no", + expandtab ? "" : "no", + err_method ? "" : "no", + ignorecase ? "" : "no", + showmatch ? "" : "no", + tabstop + ); +# endif + goto ret; + } +# if ENABLE_FEATURE_VI_SETOPTS + argp = args; + while (*argp) { + i = 0; + if (argp[0] == 'n' && argp[1] == 'o') // "noXXX" + i = 2; + argn = skip_non_whitespace(argp); + oldch = *argn; + *argn = '\0'; + setops(argp, i); + *argn = oldch; + argp = skip_whitespace(argn); + } +# endif /* FEATURE_VI_SETOPTS */ +# endif /* FEATURE_VI_SET */ + +# if ENABLE_FEATURE_VI_SEARCH + } else if (cmd[0] == 's') { // substitute a pattern with a replacement pattern + char *F, *R, *flags; + size_t len_F, len_R; + int gflag = 0; // global replace flag + int subs = 0; // number of substitutions +# if ENABLE_FEATURE_VI_VERBOSE_STATUS + int last_line = 0, lines = 0; +# endif +# if ENABLE_FEATURE_VI_REGEX_SEARCH + regex_t preg; + int cflags; + char *Rorig; +# if ENABLE_FEATURE_VI_UNDO + int undo = 0; +# endif +# endif + + // F points to the "find" pattern + // R points to the "replace" pattern + // replace the cmd line delimiters "/" with NULs + c = buf[1]; // what is the delimiter + F = buf + 2; // start of "find" + R = strchr_backslash(F, c); // middle delimiter + if (!R) + goto colon_s_fail; + len_F = R - F; + *R++ = '\0'; // terminate "find" + flags = strchr_backslash(R, c); + if (flags) { + *flags++ = '\0'; // terminate "replace" + gflag = *flags; + } + + if (len_F) { // save "find" as last search pattern + free(last_search_pattern); + last_search_pattern = xstrdup(F - 1); + last_search_pattern[0] = '/'; + } else if (last_search_pattern[1] == '\0') { + status_line_bold("No previous search"); + goto ret; + } else { + F = last_search_pattern + 1; + len_F = strlen(F); + } + + if (!GOT_ADDRESS) { // no addr given + q = begin_line(dot); // start with cur line + r = end_line(dot); + b = e = count_lines(text, q); // cur line number + } else if (!GOT_RANGE) { // one addr given + b = e; + } + +# if ENABLE_FEATURE_VI_REGEX_SEARCH + Rorig = R; + cflags = 0; + if (ignorecase) + cflags = REG_ICASE; + memset(&preg, 0, sizeof(preg)); + if (regcomp(&preg, F, cflags) != 0) { + status_line(":s bad search pattern"); + goto regex_search_end; + } +# else + len_R = strlen(R); +# endif + + for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0 + char *ls = q; // orig line start + char *found; + vc4: +# if ENABLE_FEATURE_VI_REGEX_SEARCH + found = regex_search(q, &preg, Rorig, &len_F, &len_R, &R); +# else + found = char_search(q, F, (FORWARD << 1) | LIMITED); // search cur line only for "find" +# endif + if (found) { + uintptr_t bias; + // we found the "find" pattern - delete it + // For undo support, the first item should not be chained + // This needs to be handled differently depending on + // whether or not regex support is enabled. +# if ENABLE_FEATURE_VI_REGEX_SEARCH +# define TEST_LEN_F len_F // len_F may be zero +# define TEST_UNDO1 undo++ +# define TEST_UNDO2 undo++ +# else +# define TEST_LEN_F 1 // len_F is never zero +# define TEST_UNDO1 subs +# define TEST_UNDO2 1 +# endif + if (TEST_LEN_F) // match can be empty, no delete needed + text_hole_delete(found, found + len_F - 1, + TEST_UNDO1 ? ALLOW_UNDO_CHAIN : ALLOW_UNDO); + if (len_R != 0) { // insert the "replace" pattern, if required + bias = string_insert(found, R, + TEST_UNDO2 ? ALLOW_UNDO_CHAIN : ALLOW_UNDO); + found += bias; + ls += bias; + //q += bias; - recalculated anyway + } +# if ENABLE_FEATURE_VI_REGEX_SEARCH + free(R); +# endif + if (TEST_LEN_F || len_R != 0) { + dot = ls; + subs++; +# if ENABLE_FEATURE_VI_VERBOSE_STATUS + if (last_line != i) { + last_line = i; + ++lines; + } +# endif + } + // check for "global" :s/foo/bar/g + if (gflag == 'g') { + if ((found + len_R) < end_line(ls)) { + q = found + len_R; + goto vc4; // don't let q move past cur line + } + } + } + q = next_line(ls); + } + if (subs == 0) { + status_line_bold("No match"); + } else { + dot_skip_over_ws(); +# if ENABLE_FEATURE_VI_VERBOSE_STATUS + if (subs > 1) + status_line("%d substitutions on %d lines", subs, lines); +# endif + } +# if ENABLE_FEATURE_VI_REGEX_SEARCH + regex_search_end: + regfree(&preg); +# endif +# endif /* FEATURE_VI_SEARCH */ + } else if (strncmp(cmd, "version", i) == 0) { // show software version + status_line(BB_VER); + } else if (strncmp(cmd, "write", i) == 0 // write text to file + || strcmp(cmd, "wq") == 0 + || strcmp(cmd, "wn") == 0 + || (cmd[0] == 'x' && !cmd[1]) + ) { + int size; + //int forced = FALSE; + + // is there a file name to write to? + if (args[0]) { + struct stat statbuf; + + exp = expand_args(args); + if (exp == NULL) + goto ret; + if (!useforce && (fn == NULL || strcmp(fn, exp) != 0) && + stat(exp, &statbuf) == 0) { + status_line_bold("File exists (:w! overrides)"); + goto ret; + } + fn = exp; + init_filename(fn); + } +# if ENABLE_FEATURE_VI_READONLY + else if (readonly_mode && !useforce && fn) { + status_line_bold("'%s' is read only", fn); + goto ret; + } +# endif + //if (useforce) { + // if "fn" is not write-able, chmod u+w + // sprintf(syscmd, "chmod u+w %s", fn); + // system(syscmd); + // forced = TRUE; + //} + if (modified_count != 0 || cmd[0] != 'x') { + size = r - q + 1; + l = file_write(fn, q, r); + } else { + size = 0; + l = 0; + } + //if (useforce && forced) { + // chmod u-w + // sprintf(syscmd, "chmod u-w %s", fn); + // system(syscmd); + // forced = FALSE; + //} + if (l < 0) { + if (l == -1) + status_line_bold_errno(fn); + } else { + // how many lines written + li = count_lines(q, q + l - 1); + status_line("'%s' %uL, %uC", fn, li, l); + if (l == size) { + if (q == text && q + l == end) { + modified_count = 0; + last_modified_count = -1; + } + if (cmd[1] == 'n') { + editing = 0; + } else if (cmd[0] == 'x' || cmd[1] == 'q') { + // are there other files to edit? + int n = cmdline_filecnt - optind - 1; + if (n > 0) { + if (useforce) { + // force end of argv list + optind = cmdline_filecnt; + } else { + status_line_bold("%u more file(s) to edit", n); + goto ret; + } + } + editing = 0; + } + } + } +# if ENABLE_FEATURE_VI_YANKMARK + } else if (strncmp(cmd, "yank", i) == 0) { // yank lines + if (!GOT_ADDRESS) { // no addr given- use defaults + q = begin_line(dot); // assume .,. for the range + r = end_line(dot); + } + text_yank(q, r, YDreg, WHOLE); + li = count_lines(q, r); + status_line("Yank %d lines (%d chars) into [%c]", + li, strlen(reg[YDreg]), what_reg()); +# endif + } else { + // cmd unknown + not_implemented(cmd); + } + ret: +# if ENABLE_FEATURE_VI_COLON_EXPAND + free(exp); +# endif + dot = bound_dot(dot); // make sure "dot" is valid + return; +# if ENABLE_FEATURE_VI_SEARCH + colon_s_fail: + status_line(":s expression missing delimiters"); +# endif +#endif /* FEATURE_VI_COLON */ +} + +//----- Char Routines -------------------------------------------- +// Chars that are part of a word- +// 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz +// Chars that are Not part of a word (stoppers) +// !"#$%&'()*+,-./:;<=>?@[\]^`{|}~ +// Chars that are WhiteSpace +// TAB NEWLINE VT FF RETURN SPACE +// DO NOT COUNT NEWLINE AS WHITESPACE + +static int st_test(char *p, int type, int dir, char *tested) +{ + char c, c0, ci; + int test, inc; + + inc = dir; + c = c0 = p[0]; + ci = p[inc]; + test = 0; + + if (type == S_BEFORE_WS) { + c = ci; + test = (!isspace(c) || c == '\n'); + } + if (type == S_TO_WS) { + c = c0; + test = (!isspace(c) || c == '\n'); + } + if (type == S_OVER_WS) { + c = c0; + test = isspace(c); + } + if (type == S_END_PUNCT) { + c = ci; + test = ispunct(c); + } + if (type == S_END_ALNUM) { + c = ci; + test = (isalnum(c) || c == '_'); + } + *tested = c; + return test; +} + +static char *skip_thing(char *p, int linecnt, int dir, int type) +{ + char c; + + while (st_test(p, type, dir, &c)) { + // make sure we limit search to correct number of lines + if (c == '\n' && --linecnt < 1) + break; + if (dir >= 0 && p >= end - 1) + break; + if (dir < 0 && p <= text) + break; + p += dir; // move to next char + } + return p; +} + +#if ENABLE_FEATURE_VI_USE_SIGNALS +static void winch_handler(int sig UNUSED_PARAM) +{ + int save_errno = errno; + // FIXME: do it in main loop!!! + signal(SIGWINCH, winch_handler); + query_screen_dimensions(); + new_screen(rows, columns); // get memory for virtual screen + redraw(TRUE); // re-draw the screen + errno = save_errno; +} +static void tstp_handler(int sig UNUSED_PARAM) +{ + int save_errno = errno; + + // ioctl inside cookmode() was seen to generate SIGTTOU, + // stopping us too early. Prevent that: + signal(SIGTTOU, SIG_IGN); + + go_bottom_and_clear_to_eol(); + cookmode(); // terminal to "cooked" + + // stop now + //signal(SIGTSTP, SIG_DFL); + //raise(SIGTSTP); + raise(SIGSTOP); // avoid "dance" with TSTP handler - use SIGSTOP instead + //signal(SIGTSTP, tstp_handler); + + // we have been "continued" with SIGCONT, restore screen and termios + rawmode(); // terminal to "raw" + last_status_cksum = 0; // force status update + redraw(TRUE); // re-draw the screen + + errno = save_errno; +} +static void int_handler(int sig) +{ + signal(SIGINT, int_handler); + siglongjmp(restart, sig); +} +#endif /* FEATURE_VI_USE_SIGNALS */ + +static void do_cmd(int c); + +static int at_eof(const char *s) +{ + // does 's' point to end of file, even with no terminating newline? + return ((s == end - 2 && s[1] == '\n') || s == end - 1); +} + +static int find_range(char **start, char **stop, int cmd) +{ + char *p, *q, *t; + int buftype = -1; + int c; + + p = q = dot; + +#if ENABLE_FEATURE_VI_YANKMARK + if (cmd == 'Y') { + c = 'y'; + } else +#endif + { + c = get_motion_char(); + } + +#if ENABLE_FEATURE_VI_YANKMARK + if ((cmd == 'Y' || cmd == c) && strchr("cdy><", c)) { +#else + if (cmd == c && strchr("cd><", c)) { +#endif + // these cmds operate on whole lines + buftype = WHOLE; + if (--cmdcnt > 0) { + do_cmd('j'); + if (cmd_error) + buftype = -1; + } + } else if (strchr("^%$0bBeEfFtThnN/?|{}\b\177", c)) { + // Most operate on char positions within a line. Of those that + // don't '%' needs no special treatment, search commands are + // marked as MULTI and "{}" are handled below. + buftype = strchr("nN/?", c) ? MULTI : PARTIAL; + do_cmd(c); // execute movement cmd + if (p == dot) // no movement is an error + buftype = -1; + } else if (strchr("wW", c)) { + buftype = MULTI; + do_cmd(c); // execute movement cmd + // step back one char, but not if we're at end of file, + // or if we are at EOF and search was for 'w' and we're at + // the start of a 'W' word. + if (dot > p && (!at_eof(dot) || (c == 'w' && ispunct(*dot)))) + dot--; + t = dot; + // don't include trailing WS as part of word + while (dot > p && isspace(*dot)) { + if (*dot-- == '\n') + t = dot; + } + // for non-change operations WS after NL is not part of word + if (cmd != 'c' && dot != t && *dot != '\n') + dot = t; + } else if (strchr("GHL+-gjk'\r\n", c)) { + // these operate on whole lines + buftype = WHOLE; + do_cmd(c); // execute movement cmd + if (cmd_error) + buftype = -1; + } else if (c == ' ' || c == 'l') { + // forward motion by character + int tmpcnt = (cmdcnt ?: 1); + buftype = PARTIAL; + do_cmd(c); // execute movement cmd + // exclude last char unless range isn't what we expected + // this indicates we've hit EOL + if (tmpcnt == dot - p) + dot--; + } + + if (buftype == -1) { + if (c != 27) + indicate_error(); + return buftype; + } + + q = dot; + if (q < p) { + t = q; + q = p; + p = t; + } + + // movements which don't include end of range + if (q > p) { + if (strchr("^0bBFThnN/?|\b\177", c)) { + q--; + } else if (strchr("{}", c)) { + buftype = (p == begin_line(p) && (*q == '\n' || at_eof(q))) ? + WHOLE : MULTI; + if (!at_eof(q)) { + q--; + if (q > p && p != begin_line(p)) + q--; + } + } + } + + *start = p; + *stop = q; + return buftype; +} + +//--------------------------------------------------------------------- +//----- the Ascii Chart ----------------------------------------------- +// 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel +// 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si +// 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb +// 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us +// 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 ' +// 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f / +// 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7 +// 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ? +// 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G +// 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O +// 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W +// 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _ +// 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g +// 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o +// 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w +// 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del +//--------------------------------------------------------------------- + +//----- Execute a Vi Command ----------------------------------- +static void do_cmd(int c) +{ + char *p, *q, *save_dot; + char buf[12]; + int dir; + int cnt, i, j; + int c1; +#if ENABLE_FEATURE_VI_YANKMARK + char *orig_dot = dot; +#endif +#if ENABLE_FEATURE_VI_UNDO + int allow_undo = ALLOW_UNDO; + int undo_del = UNDO_DEL; +#endif + +// c1 = c; // quiet the compiler +// cnt = yf = 0; // quiet the compiler +// p = q = save_dot = buf; // quiet the compiler + memset(buf, '\0', sizeof(buf)); + keep_index = FALSE; + cmd_error = FALSE; + + show_status_line(); + + // if this is a cursor key, skip these checks + switch (c) { + case KEYCODE_UP: + case KEYCODE_DOWN: + case KEYCODE_LEFT: + case KEYCODE_RIGHT: + case KEYCODE_HOME: + case KEYCODE_END: + case KEYCODE_PAGEUP: + case KEYCODE_PAGEDOWN: + case KEYCODE_DELETE: + goto key_cmd_mode; + } + + if (cmd_mode == 2) { + // flip-flop Insert/Replace mode + if (c == KEYCODE_INSERT) + goto dc_i; + // we are 'R'eplacing the current *dot with new char + if (*dot == '\n') { + // don't Replace past E-o-l + cmd_mode = 1; // convert to insert + undo_queue_commit(); + } else { + if (1 <= c || Isprint(c)) { + if (c != 27 && !isbackspace(c)) + dot = yank_delete(dot, dot, PARTIAL, YANKDEL, ALLOW_UNDO); + dot = char_insert(dot, c, ALLOW_UNDO_CHAIN); + } + goto dc1; + } + } + if (cmd_mode == 1) { + // hitting "Insert" twice means "R" replace mode + if (c == KEYCODE_INSERT) goto dc5; + // insert the char c at "dot" + if (1 <= c || Isprint(c)) { + dot = char_insert(dot, c, ALLOW_UNDO_QUEUED); + } + goto dc1; + } + + key_cmd_mode: + switch (c) { + //case 0x01: // soh + //case 0x09: // ht + //case 0x0b: // vt + //case 0x0e: // so + //case 0x0f: // si + //case 0x10: // dle + //case 0x11: // dc1 + //case 0x13: // dc3 +#if ENABLE_FEATURE_VI_CRASHME + case 0x14: // dc4 ctrl-T + crashme = (crashme == 0) ? 1 : 0; + break; +#endif + //case 0x16: // syn + //case 0x17: // etb + //case 0x18: // can + //case 0x1c: // fs + //case 0x1d: // gs + //case 0x1e: // rs + //case 0x1f: // us + //case '!': // !- + //case '#': // #- + //case '&': // &- + //case '(': // (- + //case ')': // )- + //case '*': // *- + //case '=': // =- + //case '@': // @- + //case 'K': // K- + //case 'Q': // Q- + //case 'S': // S- + //case 'V': // V- + //case '[': // [- + //case '\\': // \- + //case ']': // ]- + //case '_': // _- + //case '`': // `- + //case 'v': // v- + default: // unrecognized command + buf[0] = c; + buf[1] = '\0'; + not_implemented(buf); + end_cmd_q(); // stop adding to q + case 0x00: // nul- ignore + break; + case 2: // ctrl-B scroll up full screen + case KEYCODE_PAGEUP: // Cursor Key Page Up + dot_scroll(rows - 2, -1); + break; + case 4: // ctrl-D scroll down half screen + dot_scroll((rows - 2) / 2, 1); + break; + case 5: // ctrl-E scroll down one line + dot_scroll(1, 1); + break; + case 6: // ctrl-F scroll down full screen + case KEYCODE_PAGEDOWN: // Cursor Key Page Down + dot_scroll(rows - 2, 1); + break; + case 7: // ctrl-G show current status + last_status_cksum = 0; // force status update + break; + case 'h': // h- move left + case KEYCODE_LEFT: // cursor key Left + case 8: // ctrl-H- move left (This may be ERASE char) + case 0x7f: // DEL- move left (This may be ERASE char) + do { + dot_left(); + } while (--cmdcnt > 0); + break; + case 10: // Newline ^J + case 'j': // j- goto next line, same col + case KEYCODE_DOWN: // cursor key Down + case 13: // Carriage Return ^M + case '+': // +- goto next line + q = dot; + do { + p = next_line(q); + if (p == end_line(q)) { + indicate_error(); + goto dc1; + } + q = p; + } while (--cmdcnt > 0); + dot = q; + if (c == 13 || c == '+') { + dot_skip_over_ws(); + } else { + // try to stay in saved column + dot = cindex == C_END ? end_line(dot) : move_to_col(dot, cindex); + keep_index = TRUE; + } + break; + case 12: // ctrl-L force redraw whole screen + case 18: // ctrl-R force redraw + redraw(TRUE); // this will redraw the entire display + break; + case 21: // ctrl-U scroll up half screen + dot_scroll((rows - 2) / 2, -1); + break; + case 25: // ctrl-Y scroll up one line + dot_scroll(1, -1); + break; + case 27: // esc + if (cmd_mode == 0) + indicate_error(); + cmd_mode = 0; // stop inserting + undo_queue_commit(); + end_cmd_q(); + last_status_cksum = 0; // force status update + break; + case ' ': // move right + case 'l': // move right + case KEYCODE_RIGHT: // Cursor Key Right + do { + dot_right(); + } while (--cmdcnt > 0); + break; +#if ENABLE_FEATURE_VI_YANKMARK + case '"': // "- name a register to use for Delete/Yank + c1 = (get_one_char() | 0x20) - 'a'; // | 0x20 is tolower() + if ((unsigned)c1 <= 25) { // a-z? + YDreg = c1; + } else { + indicate_error(); + } + break; + case '\'': // '- goto a specific mark + c1 = (get_one_char() | 0x20); + if ((unsigned)(c1 - 'a') <= 25) { // a-z? + c1 = (c1 - 'a'); + // get the b-o-l + q = mark[c1]; + if (text <= q && q < end) { + dot = q; + dot_begin(); // go to B-o-l + dot_skip_over_ws(); + } else { + indicate_error(); + } + } else if (c1 == '\'') { // goto previous context + dot = swap_context(dot); // swap current and previous context + dot_begin(); // go to B-o-l + dot_skip_over_ws(); +#if ENABLE_FEATURE_VI_YANKMARK + orig_dot = dot; // this doesn't update stored contexts +#endif + } else { + indicate_error(); + } + break; + case 'm': // m- Mark a line + // this is really stupid. If there are any inserts or deletes + // between text[0] and dot then this mark will not point to the + // correct location! It could be off by many lines! + // Well..., at least its quick and dirty. + c1 = (get_one_char() | 0x20) - 'a'; + if ((unsigned)c1 <= 25) { // a-z? + // remember the line + mark[c1] = dot; + } else { + indicate_error(); + } + break; + case 'P': // P- Put register before + case 'p': // p- put register after + p = reg[YDreg]; + if (p == NULL) { + status_line_bold("Nothing in register %c", what_reg()); + break; + } + cnt = 0; + i = cmdcnt ?: 1; + // are we putting whole lines or strings + if (regtype[YDreg] == WHOLE) { + if (c == 'P') { + dot_begin(); // putting lines- Put above + } + else /* if ( c == 'p') */ { + // are we putting after very last line? + if (end_line(dot) == (end - 1)) { + dot = end; // force dot to end of text[] + } else { + dot_next(); // next line, then put before + } + } + } else { + if (c == 'p') + dot_right(); // move to right, can move to NL + // how far to move cursor if register doesn't have a NL + if (strchr(p, '\n') == NULL) + cnt = i * strlen(p) - 1; + } + do { + // dot is adjusted if text[] is reallocated so we don't have to + string_insert(dot, p, allow_undo); // insert the string +# if ENABLE_FEATURE_VI_UNDO + allow_undo = ALLOW_UNDO_CHAIN; +# endif + } while (--cmdcnt > 0); + dot += cnt; + dot_skip_over_ws(); +# if ENABLE_FEATURE_VI_YANKMARK && ENABLE_FEATURE_VI_VERBOSE_STATUS + yank_status("Put", p, i); +# endif + end_cmd_q(); // stop adding to q + break; + case 'U': // U- Undo; replace current line with original version + if (reg[Ureg] != NULL) { + p = begin_line(dot); + q = end_line(dot); + p = text_hole_delete(p, q, ALLOW_UNDO); // delete cur line + p += string_insert(p, reg[Ureg], ALLOW_UNDO_CHAIN); // insert orig line + dot = p; + dot_skip_over_ws(); +# if ENABLE_FEATURE_VI_YANKMARK && ENABLE_FEATURE_VI_VERBOSE_STATUS + yank_status("Undo", reg[Ureg], 1); +# endif + } + break; +#endif /* FEATURE_VI_YANKMARK */ +#if ENABLE_FEATURE_VI_UNDO + case 'u': // u- undo last operation + undo_pop(); + break; +#endif + case '$': // $- goto end of line + case KEYCODE_END: // Cursor Key End + for (;;) { + dot = end_line(dot); + if (--cmdcnt <= 0) + break; + dot_next(); + } + cindex = C_END; + keep_index = TRUE; + break; + case '%': // %- find matching char of pair () [] {} + for (q = dot; q < end && *q != '\n'; q++) { + if (strchr("()[]{}", *q) != NULL) { + // we found half of a pair + p = find_pair(q, *q); + if (p == NULL) { + indicate_error(); + } else { + dot = p; + } + break; + } + } + if (*q == '\n') + indicate_error(); + break; + case 'f': // f- forward to a user specified char + case 'F': // F- backward to a user specified char + case 't': // t- move to char prior to next x + case 'T': // T- move to char after previous x + last_search_char = get_one_char(); // get the search char + last_search_cmd = c; + // fall through + case ';': // ;- look at rest of line for last search char + case ',': // ,- repeat latest search in opposite direction + dot_to_char(c != ',' ? last_search_cmd : last_search_cmd ^ 0x20); + break; +#if ENABLE_FEATURE_VI_DOT_CMD + case '.': // .- repeat the last modifying command + // Stuff the last_modifying_cmd back into stdin + // and let it be re-executed. + if (lmc_len != 0) { + if (cmdcnt) // update saved count if current count is non-zero + dotcnt = cmdcnt; + last_modifying_cmd[lmc_len] = '\0'; + ioq = ioq_start = xasprintf("%u%s", dotcnt, last_modifying_cmd); + } + break; +#endif +#if ENABLE_FEATURE_VI_SEARCH + case 'N': // N- backward search for last pattern + dir = last_search_pattern[0] == '/' ? BACK : FORWARD; + goto dc4; // now search for pattern + break; + case '?': // ?- backward search for a pattern + case '/': // /- forward search for a pattern + buf[0] = c; + buf[1] = '\0'; + q = get_input_line(buf); // get input line- use "status line" + if (!q[0]) // user changed mind and erased the "/"- do nothing + break; + if (!q[1]) { // if no pat re-use old pat + if (last_search_pattern[0]) + last_search_pattern[0] = c; + } else { // strlen(q) > 1: new pat- save it and find + free(last_search_pattern); + last_search_pattern = xstrdup(q); + } + // fall through + case 'n': // n- repeat search for last pattern + // search rest of text[] starting at next char + // if search fails "dot" is unchanged + dir = last_search_pattern[0] == '/' ? FORWARD : BACK; + dc4: + if (last_search_pattern[1] == '\0') { + status_line_bold("No previous search"); + break; + } + do { + q = char_search(dot + dir, last_search_pattern + 1, + (dir << 1) | FULL); + if (q != NULL) { + dot = q; // good search, update "dot" + } else { + // no pattern found between "dot" and top/bottom of file + // continue from other end of file + const char *msg; + q = char_search(dir == FORWARD ? text : end - 1, + last_search_pattern + 1, (dir << 1) | FULL); + if (q != NULL) { // found something + dot = q; // found new pattern- goto it + msg = "search hit %s, continuing at %s"; + } else { // pattern is nowhere in file + cmdcnt = 0; // force exit from loop + msg = "Pattern not found"; + } + if (dir == FORWARD) + status_line_bold(msg, "BOTTOM", "TOP"); + else + status_line_bold(msg, "TOP", "BOTTOM"); + } + } while (--cmdcnt > 0); + break; + case '{': // {- move backward paragraph + case '}': // }- move forward paragraph + dir = c == '}' ? FORWARD : BACK; + do { + int skip = TRUE; // initially skip consecutive empty lines + while (dir == FORWARD ? dot < end - 1 : dot > text) { + if (*dot == '\n' && dot[dir] == '\n') { + if (!skip) { + if (dir == FORWARD) + ++dot; // move to next blank line + goto dc2; + } + } + else { + skip = FALSE; + } + dot += dir; + } + goto dc6; // end of file + dc2: continue; + } while (--cmdcnt > 0); + break; +#endif /* FEATURE_VI_SEARCH */ + case '0': // 0- goto beginning of line + case '1': // 1- + case '2': // 2- + case '3': // 3- + case '4': // 4- + case '5': // 5- + case '6': // 6- + case '7': // 7- + case '8': // 8- + case '9': // 9- + if (c == '0' && cmdcnt < 1) { + dot_begin(); // this was a standalone zero + } else { + cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number + } + break; + case ':': // :- the colon mode commands + p = get_input_line(":"); // get input line- use "status line" + colon(p); // execute the command + break; + case '<': // <- Left shift something + case '>': // >- Right shift something + cnt = count_lines(text, dot); // remember what line we are on + if (find_range(&p, &q, c) == -1) + goto dc6; + i = count_lines(p, q); // # of lines we are shifting + for (p = begin_line(p); i > 0; i--, p = next_line(p)) { + if (c == '<') { + // shift left- remove tab or tabstop spaces + if (*p == '\t') { + // shrink buffer 1 char + text_hole_delete(p, p, allow_undo); + } else if (*p == ' ') { + // we should be calculating columns, not just SPACE + for (j = 0; *p == ' ' && j < tabstop; j++) { + text_hole_delete(p, p, allow_undo); +#if ENABLE_FEATURE_VI_UNDO + allow_undo = ALLOW_UNDO_CHAIN; +#endif + } + } + } else if (/* c == '>' && */ p != end_line(p)) { + // shift right -- add tab or tabstop spaces on non-empty lines + char_insert(p, '\t', allow_undo); + } +#if ENABLE_FEATURE_VI_UNDO + allow_undo = ALLOW_UNDO_CHAIN; +#endif + } + dot = find_line(cnt); // what line were we on + dot_skip_over_ws(); + end_cmd_q(); // stop adding to q + break; + case 'A': // A- append at e-o-l + dot_end(); // go to e-o-l + //**** fall through to ... 'a' + case 'a': // a- append after current char + if (*dot != '\n') + dot++; + goto dc_i; + break; + case 'B': // B- back a blank-delimited Word + case 'E': // E- end of a blank-delimited word + case 'W': // W- forward a blank-delimited word + dir = FORWARD; + if (c == 'B') + dir = BACK; + do { + if (c == 'W' || isspace(dot[dir])) { + dot = skip_thing(dot, 1, dir, S_TO_WS); + dot = skip_thing(dot, 2, dir, S_OVER_WS); + } + if (c != 'W') + dot = skip_thing(dot, 1, dir, S_BEFORE_WS); + } while (--cmdcnt > 0); + break; + case 'C': // C- Change to e-o-l + case 'D': // D- delete to e-o-l + save_dot = dot; + dot = dollar_line(dot); // move to before NL + // copy text into a register and delete + dot = yank_delete(save_dot, dot, PARTIAL, YANKDEL, ALLOW_UNDO); // delete to e-o-l + if (c == 'C') + goto dc_i; // start inserting +#if ENABLE_FEATURE_VI_DOT_CMD + if (c == 'D') + end_cmd_q(); // stop adding to q +#endif + break; + case 'g': // 'gg' goto a line number (vim) (default: very first line) + c1 = get_one_char(); + if (c1 != 'g') { + buf[0] = 'g'; + // c1 < 0 if the key was special. Try "g" + // TODO: if Unicode? + buf[1] = (c1 >= 0 ? c1 : '*'); + buf[2] = '\0'; + not_implemented(buf); + cmd_error = TRUE; + break; + } + if (cmdcnt == 0) + cmdcnt = 1; + // fall through + case 'G': // G- goto to a line number (default= E-O-F) + dot = end - 1; // assume E-O-F + if (cmdcnt > 0) { + dot = find_line(cmdcnt); // what line is #cmdcnt + } + dot_begin(); + dot_skip_over_ws(); + break; + case 'H': // H- goto top line on screen + dot = screenbegin; + if (cmdcnt > (rows - 1)) { + cmdcnt = (rows - 1); + } + while (--cmdcnt > 0) { + dot_next(); + } + dot_begin(); + dot_skip_over_ws(); + break; + case 'I': // I- insert before first non-blank + dot_begin(); // 0 + dot_skip_over_ws(); + //**** fall through to ... 'i' + case 'i': // i- insert before current char + case KEYCODE_INSERT: // Cursor Key Insert + dc_i: +#if ENABLE_FEATURE_VI_SETOPTS + newindent = -1; +#endif + cmd_mode = 1; // start inserting + undo_queue_commit(); // commit queue when cmd_mode changes + break; + case 'J': // J- join current and next lines together + do { + dot_end(); // move to NL + if (dot < end - 1) { // make sure not last char in text[] +#if ENABLE_FEATURE_VI_UNDO + undo_push(dot, 1, UNDO_DEL); + *dot++ = ' '; // replace NL with space + undo_push((dot - 1), 1, UNDO_INS_CHAIN); +#else + *dot++ = ' '; + modified_count++; +#endif + while (isblank(*dot)) { // delete leading WS + text_hole_delete(dot, dot, ALLOW_UNDO_CHAIN); + } + } + } while (--cmdcnt > 0); + end_cmd_q(); // stop adding to q + break; + case 'L': // L- goto bottom line on screen + dot = end_screen(); + if (cmdcnt > (rows - 1)) { + cmdcnt = (rows - 1); + } + while (--cmdcnt > 0) { + dot_prev(); + } + dot_begin(); + dot_skip_over_ws(); + break; + case 'M': // M- goto middle line on screen + dot = screenbegin; + for (cnt = 0; cnt < (rows-1) / 2; cnt++) + dot = next_line(dot); + dot_skip_over_ws(); + break; + case 'O': // O- open an empty line above + dot_begin(); +#if ENABLE_FEATURE_VI_SETOPTS + // special case: use indent of current line + newindent = get_column(dot + indent_len(dot)); +#endif + goto dc3; + case 'o': // o- open an empty line below + dot_end(); + dc3: +#if ENABLE_FEATURE_VI_SETOPTS + cmd_mode = 1; // switch to insert mode early +#endif + dot = char_insert(dot, '\n', ALLOW_UNDO); + if (c == 'O' && !autoindent) { + // done in char_insert() for 'O'+autoindent + dot_prev(); + } + goto dc_i; + break; + case 'R': // R- continuous Replace char + dc5: + cmd_mode = 2; + undo_queue_commit(); + rstart = dot; + break; + case KEYCODE_DELETE: + if (dot < end - 1) + dot = yank_delete(dot, dot, PARTIAL, YANKDEL, ALLOW_UNDO); + break; + case 'X': // X- delete char before dot + case 'x': // x- delete the current char + case 's': // s- substitute the current char + dir = 0; + if (c == 'X') + dir = -1; + do { + if (dot[dir] != '\n') { + if (c == 'X') + dot--; // delete prev char + dot = yank_delete(dot, dot, PARTIAL, YANKDEL, allow_undo); // delete char +#if ENABLE_FEATURE_VI_UNDO + allow_undo = ALLOW_UNDO_CHAIN; +#endif + } + } while (--cmdcnt > 0); + end_cmd_q(); // stop adding to q + if (c == 's') + goto dc_i; // start inserting + break; + case 'Z': // Z- if modified, {write}; exit + c1 = get_one_char(); + // ZQ means to exit without saving + if (c1 == 'Q') { + editing = 0; + optind = cmdline_filecnt; + break; + } + // ZZ means to save file (if necessary), then exit + if (c1 != 'Z') { + indicate_error(); + break; + } + if (modified_count) { + if (ENABLE_FEATURE_VI_READONLY && readonly_mode && current_filename) { + status_line_bold("'%s' is read only", current_filename); + break; + } + cnt = file_write(current_filename, text, end - 1); + if (cnt < 0) { + if (cnt == -1) + status_line_bold("Write error: "STRERROR_FMT STRERROR_ERRNO); + } else if (cnt == (end - 1 - text + 1)) { + editing = 0; + } + } else { + editing = 0; + } + // are there other files to edit? + j = cmdline_filecnt - optind - 1; + if (editing == 0 && j > 0) { + editing = 1; + modified_count = 0; + last_modified_count = -1; + status_line_bold("%u more file(s) to edit", j); + } + break; + case '^': // ^- move to first non-blank on line + dot_begin(); + dot_skip_over_ws(); + break; + case 'b': // b- back a word + case 'e': // e- end of word + dir = FORWARD; + if (c == 'b') + dir = BACK; + do { + if ((dot + dir) < text || (dot + dir) > end - 1) + break; + dot += dir; + if (isspace(*dot)) { + dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS); + } + if (isalnum(*dot) || *dot == '_') { + dot = skip_thing(dot, 1, dir, S_END_ALNUM); + } else if (ispunct(*dot)) { + dot = skip_thing(dot, 1, dir, S_END_PUNCT); + } + } while (--cmdcnt > 0); + break; + case 'c': // c- change something + case 'd': // d- delete something +#if ENABLE_FEATURE_VI_YANKMARK + case 'y': // y- yank something + case 'Y': // Y- Yank a line +#endif + { + int yf = YANKDEL; // assume either "c" or "d" + int buftype; +#if ENABLE_FEATURE_VI_YANKMARK +# if ENABLE_FEATURE_VI_VERBOSE_STATUS + char *savereg = reg[YDreg]; +# endif + if (c == 'y' || c == 'Y') + yf = YANKONLY; +#endif + // determine range, and whether it spans lines + buftype = find_range(&p, &q, c); + if (buftype == -1) // invalid range + goto dc6; + if (buftype == WHOLE) { + save_dot = p; // final cursor position is start of range + p = begin_line(p); +#if ENABLE_FEATURE_VI_SETOPTS + if (c == 'c') // special case: use indent of current line + newindent = get_column(p + indent_len(p)); +#endif + q = end_line(q); + } + dot = yank_delete(p, q, buftype, yf, ALLOW_UNDO); // delete word + if (buftype == WHOLE) { + if (c == 'c') { +#if ENABLE_FEATURE_VI_SETOPTS + cmd_mode = 1; // switch to insert mode early +#endif + dot = char_insert(dot, '\n', ALLOW_UNDO_CHAIN); + // on the last line of file don't move to prev line, + // handled in char_insert() if autoindent is enabled + if (dot != (end-1) && !autoindent) { + dot_prev(); + } + } else if (c == 'd') { + dot_begin(); + dot_skip_over_ws(); + } else { + dot = save_dot; + } + } + // if CHANGING, not deleting, start inserting after the delete + if (c == 'c') { + goto dc_i; // start inserting + } +#if ENABLE_FEATURE_VI_YANKMARK && ENABLE_FEATURE_VI_VERBOSE_STATUS + // only update status if a yank has actually happened + if (reg[YDreg] != savereg) + yank_status(c == 'd' ? "Delete" : "Yank", reg[YDreg], 1); +#endif + dc6: + end_cmd_q(); // stop adding to q + break; + } + case 'k': // k- goto prev line, same col + case KEYCODE_UP: // cursor key Up + case '-': // -- goto prev line + q = dot; + do { + p = prev_line(q); + if (p == begin_line(q)) { + indicate_error(); + goto dc1; + } + q = p; + } while (--cmdcnt > 0); + dot = q; + if (c == '-') { + dot_skip_over_ws(); + } else { + // try to stay in saved column + dot = cindex == C_END ? end_line(dot) : move_to_col(dot, cindex); + keep_index = TRUE; + } + break; + case 'r': // r- replace the current char with user input + c1 = get_one_char(); // get the replacement char + if (c1 != 27) { + if (end_line(dot) - dot < (cmdcnt ?: 1)) { + indicate_error(); + goto dc6; + } + do { + dot = text_hole_delete(dot, dot, allow_undo); +#if ENABLE_FEATURE_VI_UNDO + allow_undo = ALLOW_UNDO_CHAIN; +#endif + dot = char_insert(dot, c1, allow_undo); + } while (--cmdcnt > 0); + dot_left(); + } + end_cmd_q(); // stop adding to q + break; + case 'w': // w- forward a word + do { + if (isalnum(*dot) || *dot == '_') { // we are on ALNUM + dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM); + } else if (ispunct(*dot)) { // we are on PUNCT + dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT); + } + if (dot < end - 1) + dot++; // move over word + if (isspace(*dot)) { + dot = skip_thing(dot, 2, FORWARD, S_OVER_WS); + } + } while (--cmdcnt > 0); + break; + case 'z': // z- + c1 = get_one_char(); // get the replacement char + cnt = 0; + if (c1 == '.') + cnt = (rows - 2) / 2; // put dot at center + if (c1 == '-') + cnt = rows - 2; // put dot at bottom + screenbegin = begin_line(dot); // start dot at top + dot_scroll(cnt, -1); + break; + case '|': // |- move to column "cmdcnt" + dot = move_to_col(dot, cmdcnt - 1); // try to move to column + break; + case '~': // ~- flip the case of letters a-z -> A-Z + do { +#if ENABLE_FEATURE_VI_UNDO + if (isalpha(*dot)) { + undo_push(dot, 1, undo_del); + *dot = islower(*dot) ? toupper(*dot) : tolower(*dot); + undo_push(dot, 1, UNDO_INS_CHAIN); + undo_del = UNDO_DEL_CHAIN; + } +#else + if (islower(*dot)) { + *dot = toupper(*dot); + modified_count++; + } else if (isupper(*dot)) { + *dot = tolower(*dot); + modified_count++; + } +#endif + dot_right(); + } while (--cmdcnt > 0); + end_cmd_q(); // stop adding to q + break; + //----- The Cursor and Function Keys ----------------------------- + case KEYCODE_HOME: // Cursor Key Home + dot_begin(); + break; + // The Fn keys could point to do_macro which could translate them +#if 0 + case KEYCODE_FUN1: // Function Key F1 + case KEYCODE_FUN2: // Function Key F2 + case KEYCODE_FUN3: // Function Key F3 + case KEYCODE_FUN4: // Function Key F4 + case KEYCODE_FUN5: // Function Key F5 + case KEYCODE_FUN6: // Function Key F6 + case KEYCODE_FUN7: // Function Key F7 + case KEYCODE_FUN8: // Function Key F8 + case KEYCODE_FUN9: // Function Key F9 + case KEYCODE_FUN10: // Function Key F10 + case KEYCODE_FUN11: // Function Key F11 + case KEYCODE_FUN12: // Function Key F12 + break; +#endif + } + + dc1: + // if text[] just became empty, add back an empty line + if (end == text) { + char_insert(text, '\n', NO_UNDO); // start empty buf with dummy line + dot = text; + } + // it is OK for dot to exactly equal to end, otherwise check dot validity + if (dot != end) { + dot = bound_dot(dot); // make sure "dot" is valid + } +#if ENABLE_FEATURE_VI_YANKMARK + if (dot != orig_dot) + check_context(c); // update the current context +#endif + + if (!isdigit(c)) + cmdcnt = 0; // cmd was not a number, reset cmdcnt + cnt = dot - begin_line(dot); + // Try to stay off of the Newline + if (*dot == '\n' && cnt > 0 && cmd_mode == 0) + dot--; +} + +// NB! the CRASHME code is unmaintained, and doesn't currently build +#if ENABLE_FEATURE_VI_CRASHME +static int totalcmds = 0; +static int Mp = 85; // Movement command Probability +static int Np = 90; // Non-movement command Probability +static int Dp = 96; // Delete command Probability +static int Ip = 97; // Insert command Probability +static int Yp = 98; // Yank command Probability +static int Pp = 99; // Put command Probability +static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0; +static const char chars[20] = "\t012345 abcdABCD-=.$"; +static const char *const words[20] = { + "this", "is", "a", "test", + "broadcast", "the", "emergency", "of", + "system", "quick", "brown", "fox", + "jumped", "over", "lazy", "dogs", + "back", "January", "Febuary", "March" +}; +static const char *const lines[20] = { + "You should have received a copy of the GNU General Public License\n", + "char c, cm, *cmd, *cmd1;\n", + "generate a command by percentages\n", + "Numbers may be typed as a prefix to some commands.\n", + "Quit, discarding changes!\n", + "Forced write, if permission originally not valid.\n", + "In general, any ex or ed command (such as substitute or delete).\n", + "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", + "Please get w/ me and I will go over it with you.\n", + "The following is a list of scheduled, committed changes.\n", + "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", + "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", + "Any question about transactions please contact Sterling Huxley.\n", + "I will try to get back to you by Friday, December 31.\n", + "This Change will be implemented on Friday.\n", + "Let me know if you have problems accessing this;\n", + "Sterling Huxley recently added you to the access list.\n", + "Would you like to go to lunch?\n", + "The last command will be automatically run.\n", + "This is too much english for a computer geek.\n", +}; +static char *multilines[20] = { + "You should have received a copy of the GNU General Public License\n", + "char c, cm, *cmd, *cmd1;\n", + "generate a command by percentages\n", + "Numbers may be typed as a prefix to some commands.\n", + "Quit, discarding changes!\n", + "Forced write, if permission originally not valid.\n", + "In general, any ex or ed command (such as substitute or delete).\n", + "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", + "Please get w/ me and I will go over it with you.\n", + "The following is a list of scheduled, committed changes.\n", + "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", + "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", + "Any question about transactions please contact Sterling Huxley.\n", + "I will try to get back to you by Friday, December 31.\n", + "This Change will be implemented on Friday.\n", + "Let me know if you have problems accessing this;\n", + "Sterling Huxley recently added you to the access list.\n", + "Would you like to go to lunch?\n", + "The last command will be automatically run.\n", + "This is too much english for a computer geek.\n", +}; + +// create a random command to execute +static void crash_dummy() +{ + static int sleeptime; // how long to pause between commands + char c, cm, *cmd, *cmd1; + int i, cnt, thing, rbi, startrbi, percent; + + // "dot" movement commands + cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL"; + + // is there already a command running? + if (readbuffer[0] > 0) + goto cd1; + cd0: + readbuffer[0] = 'X'; + startrbi = rbi = 1; + sleeptime = 0; // how long to pause between commands + memset(readbuffer, '\0', sizeof(readbuffer)); + // generate a command by percentages + percent = (int) lrand48() % 100; // get a number from 0-99 + if (percent < Mp) { // Movement commands + // available commands + cmd = cmd1; + M++; + } else if (percent < Np) { // non-movement commands + cmd = "mz<>\'\""; // available commands + N++; + } else if (percent < Dp) { // Delete commands + cmd = "dx"; // available commands + D++; + } else if (percent < Ip) { // Inset commands + cmd = "iIaAsrJ"; // available commands + I++; + } else if (percent < Yp) { // Yank commands + cmd = "yY"; // available commands + Y++; + } else if (percent < Pp) { // Put commands + cmd = "pP"; // available commands + P++; + } else { + // We do not know how to handle this command, try again + U++; + goto cd0; + } + // randomly pick one of the available cmds from "cmd[]" + i = (int) lrand48() % strlen(cmd); + cm = cmd[i]; + if (strchr(":\024", cm)) + goto cd0; // dont allow colon or ctrl-T commands + readbuffer[rbi++] = cm; // put cmd into input buffer + + // now we have the command- + // there are 1, 2, and multi char commands + // find out which and generate the rest of command as necessary + if (strchr("dmryz<>\'\"", cm)) { // 2-char commands + cmd1 = " \n\r0$^-+wWeEbBhjklHL"; + if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[] + cmd1 = "abcdefghijklmnopqrstuvwxyz"; + } + thing = (int) lrand48() % strlen(cmd1); // pick a movement command + c = cmd1[thing]; + readbuffer[rbi++] = c; // add movement to input buffer + } + if (strchr("iIaAsc", cm)) { // multi-char commands + if (cm == 'c') { + // change some thing + thing = (int) lrand48() % strlen(cmd1); // pick a movement command + c = cmd1[thing]; + readbuffer[rbi++] = c; // add movement to input buffer + } + thing = (int) lrand48() % 4; // what thing to insert + cnt = (int) lrand48() % 10; // how many to insert + for (i = 0; i < cnt; i++) { + if (thing == 0) { // insert chars + readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))]; + } else if (thing == 1) { // insert words + strcat(readbuffer, words[(int) lrand48() % 20]); + strcat(readbuffer, " "); + sleeptime = 0; // how fast to type + } else if (thing == 2) { // insert lines + strcat(readbuffer, lines[(int) lrand48() % 20]); + sleeptime = 0; // how fast to type + } else { // insert multi-lines + strcat(readbuffer, multilines[(int) lrand48() % 20]); + sleeptime = 0; // how fast to type + } + } + strcat(readbuffer, ESC); + } + readbuffer[0] = strlen(readbuffer + 1); + cd1: + totalcmds++; + if (sleeptime > 0) + mysleep(sleeptime); // sleep 1/100 sec +} + +// test to see if there are any errors +static void crash_test() +{ + static time_t oldtim; + + time_t tim; + char d[2], msg[80]; + + msg[0] = '\0'; + if (end < text) { + strcat(msg, "end textend) { + strcat(msg, "end>textend "); + } + if (dot < text) { + strcat(msg, "dot end) { + strcat(msg, "dot>end "); + } + if (screenbegin < text) { + strcat(msg, "screenbegin end - 1) { + strcat(msg, "screenbegin>end-1 "); + } + + if (msg[0]) { + printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s", + totalcmds, last_input_char, msg, ESC_BOLD_TEXT, ESC_NORM_TEXT); + fflush_all(); + while (safe_read(STDIN_FILENO, d, 1) > 0) { + if (d[0] == '\n' || d[0] == '\r') + break; + } + } + tim = time(NULL); + if (tim >= (oldtim + 3)) { + sprintf(status_buffer, + "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d", + totalcmds, M, N, I, D, Y, P, U, end - text + 1); + oldtim = tim; + } +} +#endif + +#if ENABLE_FEATURE_VI_COLON +static void run_cmds(char *p) +{ + while (p) { + char *q = p; + p = strchr(q, '\n'); + if (p) + while (*p == '\n') + *p++ = '\0'; + if (strlen(q) < MAX_INPUT_LEN) + colon(q); + } +} +#endif + +static void edit_file(char *fn) +{ +#if ENABLE_FEATURE_VI_YANKMARK +#define cur_line edit_file__cur_line +#endif + int c; +#if ENABLE_FEATURE_VI_USE_SIGNALS + int sig; +#endif + + editing = 1; // 0 = exit, 1 = one file, 2 = multiple files + rawmode(); + rows = 24; + columns = 80; + IF_FEATURE_VI_ASK_TERMINAL(G.get_rowcol_error =) query_screen_dimensions(); +#if ENABLE_FEATURE_VI_ASK_TERMINAL + if (G.get_rowcol_error /* TODO? && no input on stdin */) { + uint64_t k; + write1(ESC"[999;999H" ESC"[6n"); + fflush_all(); + k = safe_read_key(STDIN_FILENO, readbuffer, /*timeout_ms:*/ 100); + if ((int32_t)k == KEYCODE_CURSOR_POS) { + uint32_t rc = (k >> 32); + columns = (rc & 0x7fff); + if (columns > MAX_SCR_COLS) + columns = MAX_SCR_COLS; + rows = ((rc >> 16) & 0x7fff); + if (rows > MAX_SCR_ROWS) + rows = MAX_SCR_ROWS; + } + } +#endif + new_screen(rows, columns); // get memory for virtual screen + init_text_buffer(fn); + +#if ENABLE_FEATURE_VI_YANKMARK + YDreg = 26; // default Yank/Delete reg +// Ureg = 27; - const // hold orig line for "U" cmd + mark[26] = mark[27] = text; // init "previous context" +#endif + +#if ENABLE_FEATURE_VI_CRASHME + last_input_char = '\0'; +#endif + crow = 0; + ccol = 0; + +#if ENABLE_FEATURE_VI_USE_SIGNALS + signal(SIGWINCH, winch_handler); + signal(SIGTSTP, tstp_handler); + sig = sigsetjmp(restart, 1); + if (sig != 0) { + screenbegin = dot = text; + } + // int_handler() can jump to "restart", + // must install handler *after* initializing "restart" + signal(SIGINT, int_handler); +#endif + + cmd_mode = 0; // 0=command 1=insert 2='R'eplace + cmdcnt = 0; + offset = 0; // no horizontal offset + c = '\0'; +#if ENABLE_FEATURE_VI_DOT_CMD + free(ioq_start); + ioq_start = NULL; + adding2q = 0; +#endif + +#if ENABLE_FEATURE_VI_COLON + while (initial_cmds) + run_cmds((char *)llist_pop(&initial_cmds)); +#endif + redraw(FALSE); // dont force every col re-draw + //------This is the main Vi cmd handling loop ----------------------- + while (editing > 0) { +#if ENABLE_FEATURE_VI_CRASHME + if (crashme > 0) { + if ((end - text) > 1) { + crash_dummy(); // generate a random command + } else { + crashme = 0; + string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n", NO_UNDO); + dot = text; + refresh(FALSE); + } + } +#endif + c = get_one_char(); // get a cmd from user +#if ENABLE_FEATURE_VI_CRASHME + last_input_char = c; +#endif +#if ENABLE_FEATURE_VI_YANKMARK + // save a copy of the current line- for the 'U" command + if (begin_line(dot) != cur_line) { + cur_line = begin_line(dot); + text_yank(begin_line(dot), end_line(dot), Ureg, PARTIAL); + } +#endif +#if ENABLE_FEATURE_VI_DOT_CMD + // If c is a command that changes text[], + // (re)start remembering the input for the "." command. + if (!adding2q + && ioq_start == NULL + && cmd_mode == 0 // command mode + && c > '\0' // exclude NUL and non-ASCII chars + && c < 0x7f // (Unicode and such) + && strchr(modifying_cmds, c) + ) { + start_new_cmd_q(c); + } +#endif + do_cmd(c); // execute the user command + + // poll to see if there is input already waiting. if we are + // not able to display output fast enough to keep up, skip + // the display update until we catch up with input. + if (!readbuffer[0] && mysleep(0) == 0) { + // no input pending - so update output + refresh(FALSE); + show_status_line(); + } +#if ENABLE_FEATURE_VI_CRASHME + if (crashme > 0) + crash_test(); // test editor variables +#endif + } + //------------------------------------------------------------------- + + go_bottom_and_clear_to_eol(); + cookmode(); +#undef cur_line +} + +#define VI_OPTSTR \ + IF_FEATURE_VI_CRASHME("C") \ + IF_FEATURE_VI_COLON("c:*") \ + "Hh" \ + IF_FEATURE_VI_READONLY("R") + +enum { + IF_FEATURE_VI_CRASHME(OPTBIT_C,) + IF_FEATURE_VI_COLON(OPTBIT_c,) + OPTBIT_H, + OPTBIT_h, + IF_FEATURE_VI_READONLY(OPTBIT_R,) + OPT_C = IF_FEATURE_VI_CRASHME( (1 << OPTBIT_C)) + 0, + OPT_c = IF_FEATURE_VI_COLON( (1 << OPTBIT_c)) + 0, + OPT_H = 1 << OPTBIT_H, + OPT_h = 1 << OPTBIT_h, + OPT_R = IF_FEATURE_VI_READONLY( (1 << OPTBIT_R)) + 0, +}; + +int vi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int vi_main(int argc, char **argv) +{ + int opts; + + INIT_G(); + +#if ENABLE_FEATURE_VI_UNDO + //undo_stack_tail = NULL; - already is +# if ENABLE_FEATURE_VI_UNDO_QUEUE + undo_queue_state = UNDO_EMPTY; + //undo_q = 0; - already is +# endif +#endif + +#if ENABLE_FEATURE_VI_CRASHME + srand((long) getpid()); +#endif +#ifdef NO_SUCH_APPLET_YET + // if we aren't "vi", we are "view" + if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) { + SET_READONLY_MODE(readonly_mode); + } +#endif + + // 0: all of our options are disabled by default in vim + //vi_setops = 0; + opts = getopt32(argv, VI_OPTSTR IF_FEATURE_VI_COLON(, &initial_cmds)); + +#if ENABLE_FEATURE_VI_CRASHME + if (opts & OPT_C) + crashme = 1; +#endif + if (opts & OPT_R) + SET_READONLY_MODE(readonly_mode); + if (opts & OPT_H) + show_help(); + if (opts & (OPT_H | OPT_h)) { + bb_show_usage(); + return 1; + } + + argv += optind; + cmdline_filecnt = argc - optind; + + // 1- process EXINIT variable from environment + // 2- if EXINIT is unset process $HOME/.exrc file + // 3- process command line args +#if ENABLE_FEATURE_VI_COLON + { + const char *exinit = getenv("EXINIT"); + char *cmds = NULL; + + if (exinit) { + cmds = xstrdup(exinit); + } else { + const char *home = getenv("HOME"); + + if (home && *home) { + char *exrc = concat_path_file(home, ".exrc"); + struct stat st; + + // .exrc must belong to and only be writable by user + if (stat(exrc, &st) == 0) { + if ((st.st_mode & (S_IWGRP|S_IWOTH)) == 0 + && st.st_uid == getuid() + ) { + cmds = xmalloc_open_read_close(exrc, NULL); + } else { + status_line_bold(".exrc: permission denied"); + } + } + free(exrc); + } + } + + if (cmds) { + init_text_buffer(NULL); + run_cmds(cmds); + free(cmds); + } + } +#endif + // "Save cursor, use alternate screen buffer, clear screen" + write1(ESC"[?1049h"); + // This is the main file handling loop + optind = 0; + while (1) { + edit_file(argv[optind]); // might be NULL on 1st iteration + // NB: optind can be changed by ":next" and ":rewind" commands + optind++; + if (optind >= cmdline_filecnt) + break; + } + // "Use normal screen buffer, restore cursor" + write1(ESC"[?1049l"); + + return 0; +} diff --git a/Apps/Vi/manifest.properties b/Apps/Vi/manifest.properties new file mode 100644 index 0000000..aeaac75 --- /dev/null +++ b/Apps/Vi/manifest.properties @@ -0,0 +1,14 @@ +manifest.version=0.3 +target.sdk=0.8.0-dev +target.platforms=esp32,esp32s3,esp32c6,esp32p4,posix-x86_64 +id=tactility.vi +version.name=0.1.0 +version.code=1 +name=Vi +description=BusyBox vi text editor +app.0.id=tactility.vi +app.0.name=Vi +app.0.binary=vi +app.0.hidden=true +app.0.headless=true +app.0.stack.depth=8192 diff --git a/tactility.py b/tactility.py index 51fdb62..45adde9 100755 --- a/tactility.py +++ b/tactility.py @@ -1,4 +1,5 @@ #!/usr/bin/env python3 +# License: Apache License v2 import json import os @@ -14,7 +15,7 @@ from urllib.parse import urlparse ttbuild_path = ".tactility" -ttbuild_version = "6.1.0" +ttbuild_version = "7.0.0" ttbuild_cdn = "https://cdn.tactilityproject.org" ttbuild_sdk_json_validity = 3600 # seconds ttport = 6666 @@ -272,8 +273,11 @@ def parse_command_line(argv): #region SDK helpers -def read_sdk_json(): - json_file_path = os.path.join(ttbuild_path, "tool.json") +def get_tool_json_path(version): + return os.path.join(ttbuild_path, version, "tactility.py.json") + +def read_sdk_json(version): + json_file_path = get_tool_json_path(version) with open(json_file_path) as json_file: return json.load(json_file) @@ -305,6 +309,8 @@ def validate_local_sdks(platforms, version): sdk_dir = os.path.join(sdk_parent_dir, "TactilitySDK") if not os.path.isdir(sdk_dir): exit_with_error(f"Local SDK folder missing for {platform}: {sdk_dir}") + if not sdk_has_sdkconfig(version, platform): + exit_with_error(f"Local SDK for {platform} does not contain sdkconfig.app.{platform}, which this tool requires. Rebuild it with the current SDK release scripts.") def get_sdk_root_dir(version, platform): global ttbuild_cdn @@ -318,9 +324,8 @@ def sdk_exists(version, platform): sdk_dir = get_sdk_dir(version, platform) return os.path.isdir(sdk_dir) -def should_update_tool_json(): - global ttbuild_cdn - json_filepath = os.path.join(ttbuild_path, "tool.json") +def should_update_tool_json(version): + json_filepath = get_tool_json_path(version) if os.path.exists(json_filepath): json_modification_time = os.path.getmtime(json_filepath) now = time.time() @@ -330,27 +335,25 @@ def should_update_tool_json(): else: return True -def update_tool_json(): - global ttbuild_cdn, ttbuild_path - json_url = f"{ttbuild_cdn}/sdk/tool.json" - json_filepath = os.path.join(ttbuild_path, "tool.json") - return download_file(json_url, json_filepath) - -def should_fetch_sdkconfig_files(platform_targets): - for platform in platform_targets: - if not platform.startswith("posix"): - sdkconfig_filename = f"sdkconfig.app.{platform}" - if not os.path.exists(os.path.join(ttbuild_path, sdkconfig_filename)): - return True - return False +def update_tool_json(version): + json_filepath = get_tool_json_path(version) + os.makedirs(os.path.dirname(json_filepath), exist_ok=True) + return download_file(get_sdk_url(version, "tactility.py.json"), json_filepath) -def fetch_sdkconfig_files(platform_targets): - for platform in platform_targets: - if not platform.startswith("posix"): - sdkconfig_filename = f"sdkconfig.app.{platform}" - target_path = os.path.join(ttbuild_path, sdkconfig_filename) - if not download_file(f"{ttbuild_cdn}/sdk/{sdkconfig_filename}", target_path): - exit_with_error(f"Failed to download sdkconfig file for {platform}") +def get_sdk_sdkconfig_path(version, platform): + return os.path.join(get_sdk_dir(version, platform), f"sdkconfig.app.{platform}") + +# ESP32 SDKs built before the sdkconfig was bundled lack it and can't build apps. POSIX SDKs never need one. +def sdk_has_sdkconfig(version, platform): + return platform.startswith("posix") or os.path.isfile(get_sdk_sdkconfig_path(version, platform)) + +def copy_sdk_sdkconfig(version, platform): + if platform.startswith("posix"): + return + sdkconfig_path = get_sdk_sdkconfig_path(version, platform) + if not os.path.isfile(sdkconfig_path): + exit_with_error(f"SDK does not contain {sdkconfig_path}") + shutil.copy(sdkconfig_path, "sdkconfig") #endregion SDK helpers @@ -371,21 +374,12 @@ def validate_environment(platforms): exit_with_error("local build was requested, but TACTILITY_SDK_PATH environment variable is not set.") def validate_self(sdk_json): - if not "toolVersion" in sdk_json: - exit_with_error("Server returned invalid SDK data format (toolVersion not found)") - if not "toolCompatibility" in sdk_json: - exit_with_error("Server returned invalid SDK data format (toolCompatibility not found)") - if not "toolDownloadUrl" in sdk_json: - exit_with_error("Server returned invalid SDK data format (toolDownloadUrl not found)") - tool_version = sdk_json["toolVersion"] - tool_compatibility = sdk_json["toolCompatibility"] + if not "version" in sdk_json: + exit_with_error("Server returned invalid SDK data format (version not found)") + tool_version = sdk_json["version"] if SemanticVersion.parse(ttbuild_version) < SemanticVersion.parse(tool_version): print_warning(f"New version available: {tool_version} (currently using {ttbuild_version})") print_warning(f"Run 'tactility.py updateself' to update.") - if re.search(tool_compatibility, ttbuild_version) is None: - print_error("The tool is not compatible anymore.") - print_error("Run 'tactility.py updateself' to update.") - sys.exit(1) #endregion Validation @@ -518,9 +512,15 @@ def sdk_download(version, platform): def sdk_download_all(version, platforms): for platform in platforms: + if sdk_exists(version, platform) and not sdk_has_sdkconfig(version, platform): + print_warning(f"Cached SDK version {version} for {platform} is outdated (no sdkconfig.app.{platform}), downloading it again") + shutil.rmtree(get_sdk_root_dir(version, platform)) if not sdk_exists(version, platform): if not sdk_download(version, platform): return False + if not sdk_has_sdkconfig(version, platform): + print_error(f"SDK version {version} for {platform} does not contain sdkconfig.app.{platform}, which this tool requires. Use a newer SDK version.") + return False else: if verbose: print(f"Using cached download for SDK version {version} and platform {platform}") @@ -669,9 +669,7 @@ def build_first(version, platform, skip_build): if verbose: print(f"Using SDK at {sdk_dir}") os.environ["TACTILITY_SDK_PATH"] = sdk_dir - sdkconfig_path = os.path.join(ttbuild_path, f"sdkconfig.app.{platform}") - if not platform.startswith("posix"): - shutil.copy(sdkconfig_path, "sdkconfig") + copy_sdk_sdkconfig(version, platform) elf_path = find_elf_file(platform) # Remove previous elf file: re-creation of the file is used to measure if the build succeeded, # as the actual build job will always fail due to technical issues with the elf cmake script @@ -707,8 +705,7 @@ def build_consecutively(version, platform, skip_build): if verbose: print(f"Using SDK at {sdk_dir}") os.environ["TACTILITY_SDK_PATH"] = sdk_dir - sdkconfig_path = os.path.join(ttbuild_path, f"sdkconfig.app.{platform}") - shutil.copy(sdkconfig_path, "sdkconfig") + copy_sdk_sdkconfig(version, platform) if skip_build: return True cmake_path = get_cmake_path(platform) @@ -822,11 +819,8 @@ def build_action(manifest, arguments): local_base_path = os.environ.get("TACTILITY_SDK_PATH") validate_local_sdks(platforms_to_build, manifest["target.sdk"]) - if should_fetch_sdkconfig_files(platforms_to_build): - fetch_sdkconfig_files(platforms_to_build) - if not use_local_sdk: - sdk_json = read_sdk_json() + sdk_json = read_sdk_json(manifest["target.sdk"]) validate_self(sdk_json) # Build sdk_version = manifest["target.sdk"] @@ -886,10 +880,8 @@ def clear_cache_action(): else: print("Nothing to clear") -def update_self_action(): - sdk_json = read_sdk_json() - tool_download_url = sdk_json["toolDownloadUrl"] - if download_file(tool_download_url, "tactility.py"): +def update_self_action(manifest): + if download_file(get_sdk_url(manifest["target.sdk"], "tactility.py"), "tactility.py"): print("Updated") else: exit_with_error("Update failed") @@ -978,6 +970,9 @@ def uninstall_action(manifest, arguments): # Anchor the cache to the invocation directory, before --path (below) can chdir into the app. ttbuild_path = os.path.abspath(ttbuild_path) + # Same for a relative local SDK path. + if os.environ.get("TACTILITY_SDK_PATH") is not None: + os.environ["TACTILITY_SDK_PATH"] = os.path.abspath(os.environ["TACTILITY_SDK_PATH"]) argv = sys.argv[1:] if len(argv) == 0: @@ -1010,8 +1005,9 @@ def uninstall_action(manifest, arguments): exit_with_error("manifest.properties not found") manifest = read_manifest() validate_manifest(manifest) - # Update SDK cache (tool.json) - if not use_local_sdk and should_update_tool_json() and not update_tool_json(): + # Update SDK cache (tactility.py.json) + sdk_version = manifest["target.sdk"] + if not use_local_sdk and should_update_tool_json(sdk_version) and not update_tool_json(sdk_version): exit_with_error("Failed to retrieve SDK info") # Actions action_arg = parsed_command.action @@ -1023,7 +1019,7 @@ def uninstall_action(manifest, arguments): elif action_arg == "clearcache": clear_cache_action() elif action_arg == "updateself": - update_self_action() + update_self_action(manifest) elif action_arg == "run": run_action(manifest, parsed_command.arguments) elif action_arg == "install": From 1bb4564020b4baaa0936f7c1a8ca2f1ac31fc794 Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Sun, 27 Sep 2026 23:26:39 +0200 Subject: [PATCH 02/11] Update tactility.py to 7.0.1 --- tactility.py | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/tactility.py b/tactility.py index 45adde9..2f9bc5b 100755 --- a/tactility.py +++ b/tactility.py @@ -15,7 +15,7 @@ from urllib.parse import urlparse ttbuild_path = ".tactility" -ttbuild_version = "7.0.0" +ttbuild_version = "7.0.1" ttbuild_cdn = "https://cdn.tactilityproject.org" ttbuild_sdk_json_validity = 3600 # seconds ttport = 6666 @@ -480,8 +480,9 @@ def safe_extract_zip(zip_ref, target_dir): raise ValueError(f"Invalid zip entry: {member.filename}") zip_ref.extractall(target_dir) -def sdk_download(version, platform): - sdk_root_dir = get_sdk_root_dir(version, platform) +def sdk_download(version, platform, sdk_root_dir=None): + if sdk_root_dir is None: + sdk_root_dir = get_sdk_root_dir(version, platform) os.makedirs(sdk_root_dir, exist_ok=True) sdk_index_url = get_sdk_url(version, "index.json") print(f"Downloading SDK version {version} for {platform}") @@ -514,7 +515,21 @@ def sdk_download_all(version, platforms): for platform in platforms: if sdk_exists(version, platform) and not sdk_has_sdkconfig(version, platform): print_warning(f"Cached SDK version {version} for {platform} is outdated (no sdkconfig.app.{platform}), downloading it again") - shutil.rmtree(get_sdk_root_dir(version, platform)) + # Downloaded next to the cache, so a failed download keeps the cached SDK + sdk_root_dir = get_sdk_root_dir(version, platform) + replacement_root_dir = f"{sdk_root_dir}.new" + shutil.rmtree(replacement_root_dir, ignore_errors=True) + if not sdk_download(version, platform, replacement_root_dir): + shutil.rmtree(replacement_root_dir, ignore_errors=True) + return False + replacement_sdkconfig = os.path.join(replacement_root_dir, "TactilitySDK", f"sdkconfig.app.{platform}") + if not platform.startswith("posix") and not os.path.isfile(replacement_sdkconfig): + shutil.rmtree(replacement_root_dir, ignore_errors=True) + print_error(f"SDK version {version} for {platform} does not contain sdkconfig.app.{platform}, which this tool requires. Use a newer SDK version.") + return False + shutil.rmtree(sdk_root_dir) + shutil.move(replacement_root_dir, sdk_root_dir) + continue if not sdk_exists(version, platform): if not sdk_download(version, platform): return False From 549ba5e14201ae86b70da0716cea59e69401d0b0 Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Wed, 30 Sep 2026 21:52:11 +0200 Subject: [PATCH 03/11] Ignore python cache --- .gitignore | 2 ++ 1 file changed, 2 insertions(+) diff --git a/.gitignore b/.gitignore index 8704f76..6926f26 100644 --- a/.gitignore +++ b/.gitignore @@ -15,3 +15,5 @@ sdkconfig.old .tactility/ dependencies.lock + +__pycache__ From 8eff2a8ef4b64edec01a934ab9067a25d74e0594 Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Wed, 30 Sep 2026 21:52:19 +0200 Subject: [PATCH 04/11] Move scripts to Scripts/ --- .github/actions/publish-apps/action.yml | 2 +- .github/actions/release-apps/action.yml | 2 +- release.py => Scripts/release.py | 19 +++++++++++++++++++ Scripts/{CDN => }/upload-app-files.py | 0 4 files changed, 21 insertions(+), 2 deletions(-) rename release.py => Scripts/release.py (87%) rename Scripts/{CDN => }/upload-app-files.py (100%) diff --git a/.github/actions/publish-apps/action.yml b/.github/actions/publish-apps/action.yml index b9c2375..19e994f 100644 --- a/.github/actions/publish-apps/action.yml +++ b/.github/actions/publish-apps/action.yml @@ -18,4 +18,4 @@ runs: run: pip install boto3 - name: 'Upload files' shell: bash - run: python Scripts/CDN/upload-app-files.py cdn_files ${{ inputs.sdk_version }} ${{ env.CDN_ID }} ${{ env.CDN_TOKEN_NAME }} ${{ env.CDN_TOKEN_VALUE }} + run: python Scripts/upload-app-files.py cdn_files ${{ inputs.sdk_version }} ${{ env.CDN_ID }} ${{ env.CDN_TOKEN_NAME }} ${{ env.CDN_TOKEN_VALUE }} diff --git a/.github/actions/release-apps/action.yml b/.github/actions/release-apps/action.yml index 0b4b08e..587a53b 100644 --- a/.github/actions/release-apps/action.yml +++ b/.github/actions/release-apps/action.yml @@ -19,7 +19,7 @@ runs: id: release shell: bash run: | - python release.py cdn_files/ + python Scripts/release.py cdn_files/ echo "sdk_version=$(cat sdk_version.txt)" >> "$GITHUB_OUTPUT" - name: 'Upload Artifact' uses: actions/upload-artifact@v4 diff --git a/release.py b/Scripts/release.py similarity index 87% rename from release.py rename to Scripts/release.py index 257ad50..d5b57d7 100644 --- a/release.py +++ b/Scripts/release.py @@ -94,6 +94,17 @@ def check_and_get_sdk_version(manifest_map): def get_git_commit_hash(): return subprocess.check_output(['git', 'rev-parse', 'HEAD']).decode('ascii').strip() +def get_requires_ram(manifest): + """Parse "requires.ram" (whole megabytes with an "M" suffix, e.g. "2M") into megabytes. Absent means 0.""" + value = manifest.get("requires.ram") + if value is None: + return 0 + value = value.strip() + if len(value) < 2 or not value.endswith("M") or not value[:-1].isdigit() or int(value[:-1]) > 255: + print(f"ERROR: Invalid requires.ram \"{value}\" in {manifest.get('id', '?')}: expected whole megabytes with an M suffix (e.g. 2M), at most 255M") + sys.exit(1) + return int(value[:-1]) + def manifest_config_to_flat_json(manifest): """Convert a flat (V2) manifest dict into a flat JSON-like dict. @@ -105,6 +116,8 @@ def manifest_config_to_flat_json(manifest): description -> appDescription (optional; default "") target.sdk -> targetSdk target.platforms -> targetPlatforms (comma-separated list) + requires.device.id -> requiresDeviceId (comma-separated list, optional; default []) + requires.ram -> requiresRam (megabytes, optional; default 0) Unknown/missing values fall back to sensible defaults per requirements. """ @@ -125,6 +138,10 @@ def manifest_config_to_flat_json(manifest): platforms_raw = manifest.get("target.platforms", "") target_platforms = [p.strip() for p in str(platforms_raw).split(",") if p.strip()] if platforms_raw is not None else [] + requires_device_id_raw = manifest.get("requires.device.id", "") + requires_device_id = [d.strip() for d in str(requires_device_id_raw).split(",") if d.strip()] + requires_ram = get_requires_ram(manifest) + filename = get_versioned_file_name(manifest) return { "appId": app_id, @@ -134,6 +151,8 @@ def manifest_config_to_flat_json(manifest): "appDescription": app_description, "targetSdk": target_sdk, "targetPlatforms": target_platforms, + "requiresDeviceId": requires_device_id, + "requiresRam": requires_ram, "file": filename } diff --git a/Scripts/CDN/upload-app-files.py b/Scripts/upload-app-files.py similarity index 100% rename from Scripts/CDN/upload-app-files.py rename to Scripts/upload-app-files.py From a075732384a9534f4c7449f18908971d7bf6e56a Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Wed, 30 Sep 2026 21:52:38 +0200 Subject: [PATCH 05/11] Fix BusyBox vi and add Neatvi --- Apps/{Vi => BusyBoxVi}/CMakeLists.txt | 0 Apps/{Vi => BusyBoxVi}/LICENSE | 0 Apps/{Vi => BusyBoxVi}/README.md | 0 Apps/{Vi => BusyBoxVi}/main/CMakeLists.txt | 0 Apps/{Vi => BusyBoxVi}/main/Include/libbb.h | 6 + Apps/{Vi => BusyBoxVi}/main/Source/libbb.c | 80 +- Apps/BusyBoxVi/main/Source/main.c | 12 + Apps/{Vi => BusyBoxVi}/main/Source/read_key.c | 0 Apps/{Vi => BusyBoxVi}/main/Source/vi.c | 0 Apps/{Vi => BusyBoxVi}/manifest.properties | 8 +- Apps/Neatvi/CMakeLists.txt | 13 + Apps/Neatvi/LICENSE | 15 + Apps/Neatvi/README.md | 33 + Apps/Neatvi/main/CMakeLists.txt | 12 + Apps/Neatvi/main/Source/README.neatvi | 432 ++++ Apps/Neatvi/main/Source/conf.c | 305 +++ Apps/Neatvi/main/Source/conf.h | 210 ++ Apps/Neatvi/main/Source/dir.c | 126 + Apps/Neatvi/main/Source/ex.c | 1697 +++++++++++++ Apps/Neatvi/main/Source/kmap.h | 453 ++++ Apps/Neatvi/main/Source/lbuf.c | 439 ++++ Apps/Neatvi/main/Source/led.c | 327 +++ Apps/Neatvi/main/Source/mot.c | 224 ++ Apps/Neatvi/main/Source/reg.c | 79 + Apps/Neatvi/main/Source/regex.c | 730 ++++++ Apps/Neatvi/main/Source/regex.h | 19 + Apps/Neatvi/main/Source/ren.c | 184 ++ Apps/Neatvi/main/Source/rset.c | 146 ++ Apps/Neatvi/main/Source/rstr.c | 118 + Apps/Neatvi/main/Source/sbuf.c | 95 + Apps/Neatvi/main/Source/syn.c | 145 ++ Apps/Neatvi/main/Source/tactility.c | 54 + Apps/Neatvi/main/Source/tag.c | 340 +++ Apps/Neatvi/main/Source/term.c | 232 ++ Apps/Neatvi/main/Source/uc.c | 644 +++++ Apps/Neatvi/main/Source/vi.c | 2235 +++++++++++++++++ Apps/Neatvi/main/Source/vi.h | 268 ++ Apps/Neatvi/manifest.properties | 15 + Apps/Vi/main/Source/main.c | 8 - 39 files changed, 9680 insertions(+), 24 deletions(-) rename Apps/{Vi => BusyBoxVi}/CMakeLists.txt (100%) rename Apps/{Vi => BusyBoxVi}/LICENSE (100%) rename Apps/{Vi => BusyBoxVi}/README.md (100%) rename Apps/{Vi => BusyBoxVi}/main/CMakeLists.txt (100%) rename Apps/{Vi => BusyBoxVi}/main/Include/libbb.h (96%) rename Apps/{Vi => BusyBoxVi}/main/Source/libbb.c (84%) create mode 100644 Apps/BusyBoxVi/main/Source/main.c rename Apps/{Vi => BusyBoxVi}/main/Source/read_key.c (100%) rename Apps/{Vi => BusyBoxVi}/main/Source/vi.c (100%) rename Apps/{Vi => BusyBoxVi}/manifest.properties (70%) create mode 100644 Apps/Neatvi/CMakeLists.txt create mode 100644 Apps/Neatvi/LICENSE create mode 100644 Apps/Neatvi/README.md create mode 100644 Apps/Neatvi/main/CMakeLists.txt create mode 100644 Apps/Neatvi/main/Source/README.neatvi create mode 100644 Apps/Neatvi/main/Source/conf.c create mode 100644 Apps/Neatvi/main/Source/conf.h create mode 100644 Apps/Neatvi/main/Source/dir.c create mode 100644 Apps/Neatvi/main/Source/ex.c create mode 100644 Apps/Neatvi/main/Source/kmap.h create mode 100644 Apps/Neatvi/main/Source/lbuf.c create mode 100644 Apps/Neatvi/main/Source/led.c create mode 100644 Apps/Neatvi/main/Source/mot.c create mode 100644 Apps/Neatvi/main/Source/reg.c create mode 100644 Apps/Neatvi/main/Source/regex.c create mode 100644 Apps/Neatvi/main/Source/regex.h create mode 100644 Apps/Neatvi/main/Source/ren.c create mode 100644 Apps/Neatvi/main/Source/rset.c create mode 100644 Apps/Neatvi/main/Source/rstr.c create mode 100644 Apps/Neatvi/main/Source/sbuf.c create mode 100644 Apps/Neatvi/main/Source/syn.c create mode 100644 Apps/Neatvi/main/Source/tactility.c create mode 100644 Apps/Neatvi/main/Source/tag.c create mode 100644 Apps/Neatvi/main/Source/term.c create mode 100644 Apps/Neatvi/main/Source/uc.c create mode 100644 Apps/Neatvi/main/Source/vi.c create mode 100644 Apps/Neatvi/main/Source/vi.h create mode 100644 Apps/Neatvi/manifest.properties delete mode 100644 Apps/Vi/main/Source/main.c diff --git a/Apps/Vi/CMakeLists.txt b/Apps/BusyBoxVi/CMakeLists.txt similarity index 100% rename from Apps/Vi/CMakeLists.txt rename to Apps/BusyBoxVi/CMakeLists.txt diff --git a/Apps/Vi/LICENSE b/Apps/BusyBoxVi/LICENSE similarity index 100% rename from Apps/Vi/LICENSE rename to Apps/BusyBoxVi/LICENSE diff --git a/Apps/Vi/README.md b/Apps/BusyBoxVi/README.md similarity index 100% rename from Apps/Vi/README.md rename to Apps/BusyBoxVi/README.md diff --git a/Apps/Vi/main/CMakeLists.txt b/Apps/BusyBoxVi/main/CMakeLists.txt similarity index 100% rename from Apps/Vi/main/CMakeLists.txt rename to Apps/BusyBoxVi/main/CMakeLists.txt diff --git a/Apps/Vi/main/Include/libbb.h b/Apps/BusyBoxVi/main/Include/libbb.h similarity index 96% rename from Apps/Vi/main/Include/libbb.h rename to Apps/BusyBoxVi/main/Include/libbb.h index 34533df..519d817 100644 --- a/Apps/Vi/main/Include/libbb.h +++ b/Apps/BusyBoxVi/main/Include/libbb.h @@ -122,12 +122,18 @@ void* llist_pop(llist_t** elm); /* region Memory and strings */ +/* Allocations from the x*() functions are tracked, see bb_free_all() */ void* xmalloc(size_t size); void* xzalloc(size_t size); void* xrealloc(void* old, size_t size); char* xstrdup(const char* s); char* xstrndup(const char* s, int n); char* xasprintf(const char* format, ...) __attribute__((format(printf, 1, 2))); +/* vi frees x*() allocations with plain free() */ +void bb_free(void* ptr); +#define free bb_free +/* Frees every x*() allocation that is still live */ +void bb_free_all(void); char* skip_whitespace(const char* s); char* skip_non_whitespace(const char* s); diff --git a/Apps/Vi/main/Source/libbb.c b/Apps/BusyBoxVi/main/Source/libbb.c similarity index 84% rename from Apps/Vi/main/Source/libbb.c rename to Apps/BusyBoxVi/main/Source/libbb.c index 90c2753..97cce47 100644 --- a/Apps/Vi/main/Source/libbb.c +++ b/Apps/BusyBoxVi/main/Source/libbb.c @@ -7,6 +7,9 @@ */ #include "libbb.h" +/* This file implements bb_free() itself, so free() means libc's own below */ +#undef free + struct globals* ptr_to_globals; const char* applet_name = "vi"; @@ -27,7 +30,7 @@ void* llist_pop(llist_t** head) { } void* data = temp->data; *head = temp->link; - free(temp); + bb_free(temp); return data; } @@ -35,12 +38,49 @@ void* llist_pop(llist_t** head) { /* region Memory and strings */ +/* + * Every block handed out below is tracked, so bb_free_all() can release what vi itself never frees + * (it relies on process exit, which an app instance doesn't have). + */ +typedef union AllocHeader { + struct { + union AllocHeader* prev; + union AllocHeader* next; + } links; + max_align_t alignment; +} AllocHeader; + +static AllocHeader* allocations = NULL; + +static void* track(AllocHeader* header) { + header->links.prev = NULL; + header->links.next = allocations; + if (allocations != NULL) { + allocations->links.prev = header; + } + allocations = header; + return header + 1; +} + +static AllocHeader* untrack(void* ptr) { + AllocHeader* header = (AllocHeader*)ptr - 1; + if (header->links.prev != NULL) { + header->links.prev->links.next = header->links.next; + } else { + allocations = header->links.next; + } + if (header->links.next != NULL) { + header->links.next->links.prev = header->links.prev; + } + return header; +} + void* xmalloc(size_t size) { - void* ptr = malloc(size); - if (ptr == NULL && size != 0) { + AllocHeader* header = malloc(sizeof(AllocHeader) + size); + if (header == NULL) { bb_simple_error_msg_and_die("out of memory"); } - return ptr; + return track(header); } void* xzalloc(size_t size) { @@ -50,18 +90,34 @@ void* xzalloc(size_t size) { } void* xrealloc(void* old, size_t size) { - void* ptr = realloc(old, size); - if (ptr == NULL && size != 0) { + if (old == NULL) { + return xmalloc(size); + } + AllocHeader* header = realloc(untrack(old), sizeof(AllocHeader) + size); + if (header == NULL) { bb_simple_error_msg_and_die("out of memory"); } - return ptr; + return track(header); } -char* xstrdup(const char* s) { - char* t = strdup(s); - if (t == NULL) { - bb_simple_error_msg_and_die("out of memory"); +void bb_free(void* ptr) { + if (ptr != NULL) { + free(untrack(ptr)); + } +} + +void bb_free_all(void) { + while (allocations != NULL) { + AllocHeader* next = allocations->links.next; + free(allocations); + allocations = next; } +} + +char* xstrdup(const char* s) { + size_t size = strlen(s) + 1; + char* t = xmalloc(size); + memcpy(t, s, size); return t; } @@ -257,7 +313,7 @@ void* xmalloc_open_read_close(const char* filename, size_t* maxsz_p) { } ssize_t n = safe_read(fd, buf + size, capacity - size - 1); if (n < 0) { - free(buf); + bb_free(buf); close(fd); return NULL; } diff --git a/Apps/BusyBoxVi/main/Source/main.c b/Apps/BusyBoxVi/main/Source/main.c new file mode 100644 index 0000000..6649265 --- /dev/null +++ b/Apps/BusyBoxVi/main/Source/main.c @@ -0,0 +1,12 @@ +/* + * Licensed under GPLv2, see file LICENSE in this app's directory. + */ +int vi_main(int argc, char** argv); +void bb_free_all(void); + +int main(int argc, char* argv[]) { + int result = vi_main(argc, argv); + /* vi leaves its buffers to process exit, which an app instance doesn't have */ + bb_free_all(); + return result; +} diff --git a/Apps/Vi/main/Source/read_key.c b/Apps/BusyBoxVi/main/Source/read_key.c similarity index 100% rename from Apps/Vi/main/Source/read_key.c rename to Apps/BusyBoxVi/main/Source/read_key.c diff --git a/Apps/Vi/main/Source/vi.c b/Apps/BusyBoxVi/main/Source/vi.c similarity index 100% rename from Apps/Vi/main/Source/vi.c rename to Apps/BusyBoxVi/main/Source/vi.c diff --git a/Apps/Vi/manifest.properties b/Apps/BusyBoxVi/manifest.properties similarity index 70% rename from Apps/Vi/manifest.properties rename to Apps/BusyBoxVi/manifest.properties index aeaac75..fbae5ea 100644 --- a/Apps/Vi/manifest.properties +++ b/Apps/BusyBoxVi/manifest.properties @@ -1,14 +1,14 @@ manifest.version=0.3 target.sdk=0.8.0-dev target.platforms=esp32,esp32s3,esp32c6,esp32p4,posix-x86_64 -id=tactility.vi +id=tactility.busyboxvi version.name=0.1.0 version.code=1 name=Vi description=BusyBox vi text editor -app.0.id=tactility.vi -app.0.name=Vi +app.0.id=tactility.busyboxvi +app.0.name=BusyBox vi app.0.binary=vi app.0.hidden=true app.0.headless=true -app.0.stack.depth=8192 +app.0.stack.depth=4096 diff --git a/Apps/Neatvi/CMakeLists.txt b/Apps/Neatvi/CMakeLists.txt new file mode 100644 index 0000000..cd22471 --- /dev/null +++ b/Apps/Neatvi/CMakeLists.txt @@ -0,0 +1,13 @@ +# tactility-cmakelists-version: 1 +cmake_minimum_required(VERSION 3.20) + +if (NOT DEFINED ENV{TACTILITY_SDK_PATH}) + message(FATAL_ERROR "TACTILITY_SDK_PATH environment variable is not set") +endif() + +get_filename_component(TACTILITY_SDK_PATH "$ENV{TACTILITY_SDK_PATH}" ABSOLUTE) +include("${TACTILITY_SDK_PATH}/TactilitySDK.cmake") + +tactility_project_pre(vi) +project(vi) +tactility_project_post(vi) diff --git a/Apps/Neatvi/LICENSE b/Apps/Neatvi/LICENSE new file mode 100644 index 0000000..33c2edf --- /dev/null +++ b/Apps/Neatvi/LICENSE @@ -0,0 +1,15 @@ + +Copyright (C) 2015-2026 Ali Gholami Rudi + +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted, provided that the above +copyright notice and this permission notice appear in all copies. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + diff --git a/Apps/Neatvi/README.md b/Apps/Neatvi/README.md new file mode 100644 index 0000000..30c21da --- /dev/null +++ b/Apps/Neatvi/README.md @@ -0,0 +1,33 @@ +# Vi + +The [neatvi](https://github.com/aligrudi/neatvi) text editor for the Tactility terminal. + +## Usage + +Run it from the Terminal app: + +``` +vi [-v] [-e] [FILE]... +``` + +- `-v`: start in vi mode (default) +- `-e`: start in ex mode + +## Features + +- vi and ex commands, including `:w`, `:q`, `:wq`, `:e`, `:r`, `:s/old/new/` +- Regular expression search and substitution +- Multiple buffers, registers, marks, undo/redo +- Syntax highlighting (see `conf.c`) + +Not supported: `:!` shell commands, filters and pipes, and LSP support (Tactility can't start other processes). +The terminal has no Home/End/PgUp/PgDn keys: use `0`, `$`, `Ctrl+B` and `Ctrl+F`. + +## Source + +`main/Source` holds neatvi (upstream commit `26e9cad`), unmodified, without `cmd.c`, `lsp.c`, `json.c` and `stag.c`. +`main/Source/tactility.c` replaces `cmd.c` and `lsp.c`, which need `fork()`. + +## License + +neatvi is licensed under the ISC license, see [LICENSE](LICENSE). diff --git a/Apps/Neatvi/main/CMakeLists.txt b/Apps/Neatvi/main/CMakeLists.txt new file mode 100644 index 0000000..4641eaa --- /dev/null +++ b/Apps/Neatvi/main/CMakeLists.txt @@ -0,0 +1,12 @@ +include("$ENV{TACTILITY_SDK_PATH}/TactilitySDK.cmake") + +file(GLOB_RECURSE SOURCE_FILES Source/*.c) +tactility_component_register(SRCS ${SOURCE_FILES}) + +# neatvi code style (third-party, kept unmodified) +set(NEATVI_COMPILE_OPTIONS -Wno-missing-field-initializers -Wno-char-subscripts -Wno-implicit-fallthrough -Wno-format-truncation) +if (DEFINED COMPONENT_LIB) + target_compile_options(${COMPONENT_LIB} PRIVATE ${NEATVI_COMPILE_OPTIONS}) +else () + target_compile_options(${PROJECT_NAME} PRIVATE ${NEATVI_COMPILE_OPTIONS}) +endif () diff --git a/Apps/Neatvi/main/Source/README.neatvi b/Apps/Neatvi/main/Source/README.neatvi new file mode 100644 index 0000000..e5d35c6 --- /dev/null +++ b/Apps/Neatvi/main/Source/README.neatvi @@ -0,0 +1,432 @@ +NEATVI +====== + +Neatvi is a small vi/ex editor for editing UTF-8 text. It supports +syntax highlighting, multiple windows, right-to-left languages, +keymaps, and the language server protocol. + +CONFIGURATION +------------- + +If the EXINIT environment variable is defined, Neatvi executes its +contents as ex commands at startup. Otherwise, it executes the ex +commands in $HOME/.neatvi, if present. They can set the value of +Neatvi options, change syntax highlighting colours, define new or +modify existing keymaps, or define q-commands. The example .neatvi +section of this file demonstrates this. To change syntax highlighting +and text direction patterns, conf.h must be modified. + +The :hl (:highlight) ex-mode command changes syntax highlighting +colours; see the syntax highlighting section of this file for the +default set of highlighting rules. The :cm command switches the +current keymap. Also, when in input mode, ^e activates the English +keymap and ^f switches to the alternate keymap (the last keymap +specified with :cm). The :mk (:mapkey) command modifies key mappings +of the current keymap. + +Sadly, VTE-based terminals such as GNOME's implement a +backward-incompatible extension of virtual terminal escape codes to +render bidirectional text by default. When using these terminal, the +the value of the vte option must be changed to 1. + +COMMANDS +-------- + +Commands not available in ex(1): + +:cm[ap][!] [kmap] + Without argument, prints the current keymap name. When kmap + is given, it switches to the given keymap; with !, it sets the + alternate keymap as well. +:ft [filetype] + Without filetype, prints the current file type. + When filetype is specified, sets the file type of the + current ex buffer. +:ta[g] tag + Jumps to tag (tags file: TAGPATH environment variable or ./tags). +:tn[ext] + Jumps to the next matching tag. +:tp[rev] + Jumps to the previous matching tag. +:tt + Pushes the current cursor position to the tag stack. +:tc + Closes the tags file and resets the tag stack. +:po[p] + Pops the tag stack. +:b[uffer] [buf] + Without buf, prints the buffer list. If buf is given and is a + buffer number or alias, it switches to the given buffer. Also, + buf can be -, +, !, and ~, to switch to the previous buffer, + switch to the next buffer, delete the current buffer, and + renumber buffers, respectively. +:rs reg + Reads dot-terminated lines (similar to :a command) from ex input + and copies them to the given yank buffer. +:rx reg cmd + Like :! command, executes cmd. However, the contents of the + specified yank buffer is given to the command as input, and the + output of the command is written to the same buffer. +:rk reg path + Connects to a unix socket, writes the contents of the given buffer + to it, and reads from the socket into the buffer. +:ra reg + Similar to :@ command, executes the contents of the given buffer. + Before executing the buffer, however, it replaces ^rx with the + contents of buffer x, and ^vx with x, in which x is any character. +:ec[ho] msg + Prints the given message (useful in ex scripts or q-commands). +:hl name [flags] [fg] [bg] + Specifies syntax highlighting colours. Flags can be a combination + of b for bold, i for italic, and r for reversed mode. Fg and bg, + if present, specify the foreground and background colours. + Colours can be numbers from 0 to 255; numbers greater than 15 can + be used only if the terminal supports the 256-colour palette. +:mk key [def] + Maps a key to the given character in the current keymap. If def is + missing, the mapping is reset. +:mc ch [def] + Defines a character placeholder for UTF-8 character ch. For + instance, "mc  ^r" maps ^r; ^v can be used to escape non-printable + characters. +:cn[ext] + Opens the next item in quick fix list (* yank buffer). +:cp[rev] + Opens the previous item in quick fix list. +:cc + Jumps to the current quick fix item. +:lsp[open] cmd + Executes cmd as the LSP server (see the LSP section). +:lspc[lose] + Terminates the LSP server. +:lspg[oto] + Goes to the definition of the identifier under the cursor (LSP client). + Pushes the current cursor position to the tag stack (^t to go back). +:lspf[ind] + Finds the references of the identifier under the cursor (LSP client). + It fills the * yank buffer (quick fix list). +:lspd[oc] buf + Copies hover documentation (LSP client) of the identifier under the + cursor into the given yank buffer. + +New key mappings: +- ^a in normal mode: searches for the word under the cursor. +- ^p in insert mode: inserts the contents of the default yank buffer. +- ^rX in insert mode: inserts the contents of yank buffer X. +- z>, z<, 2z>, and 2z< in normal mode: changes the value of td option. +- ^e and ^f in insert mode: switches to the English and alternate keymap. +- ze and zf in normal mode: switches to the English and alternate keymap. +- gu, gU, and g~ in normal mode: switches character case. +- ^l in normal mode: updates terminal dimensions (after resizing it). +- ^] and ^t in normal mode: jumps to tag and pops tag stack. +- gf in normal mode: edits the file whose address is under the cursor. +- gl in normal mode: like gf, but it reads line and column numbers too. +- gd in normal mode: goes to global definition (see filetype struct in conf.h). +- ^ws, ^wo, ^wc, ^wj, ^wk, ^wx in normal mode: manages windows. +- ^wgf, ^wgl, ^w^] in normal mode: executes gf, gl, ^] in a new window. +- zj, zk, zD: equivalent to :b+, :b-, :b !. +- zJ, zK: equivalent to :next, :prev. +- ^a in ex, search, and pipe prompts: inserts from history lines. +- q in normal mode: see the quick access section. +- q;: lists and filters buffers. +- q,: lists and filters files listed in ./ls. +- q=: lists and filters files tags in ./tags. +- q*: lists and filters quick fix items. + +Other noteworthy differences with vi(1): +- Neatvi assumes POSIX extended regular expressions (ERE) in search + patterns, conf.h variables, and even tags files. +- If paths start with =, they are assumed to be relative to the + directory of the current file. +- Neatvi highlights files whose names end with ls as directory + listings; combined with the gl command, which opens the file + under the cursor, it can be used to explore and edit files + under a directory. For instance, git ls-files >ls && neatvi ls. +- In addition to the standard single-letter yank buffers, Neatvi + supports a set of extended buffers whose two-letter names begin + with a backslash, like \x. +- The :cn and :cp ex commands and q* vi command read the * buffer, + which must contain lines with the "path:line:offset: description" + format. For instance, after the "rx * git grep -Fwn --column ']'" + command, one can open the occurrences of the word under the + cursor using :cn, :cp, and q* commands. +- The output of :make is copied into the quick fix buffer (*). + +Note that in :rs command, input lines are read from ex input stream +(unlike :a), to make it usable in @ commands and ex scripts (files +passed to :so). This allows setting the value of yank buffers in ex +files (see the example .neatvi section for examples). + +OPTIONS +------- + +To improve Neatvi's performance, shaping, character reordering, and +syntax highlighting can be disabled by defining the EXINIT environment +variable as "set noshape | set noorder | set nohl | set td=+2". + +Options supported in Neatvi: + +td, textdirection + Current direction context. The following values are meaningful: + * +2: always left-to-right. + * +1: follow conf.h's dircontexts[]; left-to-right for others. + * -1: follow conf.h's dircontexts[]; right-to-left for others. + * -2: always right-to-left. + The default value is 0, which assumes left-to-right if the first + character of the line is single-byte; otherwise, it follows + dircontexts[]. +shape + If set, Arabic/Farsi letter shaping will be performed. +order + If set, characters will be reordered based on the rules defined + in conf.h. If the value is 1, only lines with at least one + multi-byte UTF-8 character are reordered. If it is 2, all lines + are reordered. +hl, highlight + If set, text will be highlighted based on syntax highlighting + rules in conf.h. +hll, highlightline + If set, the current line will be highlighted. +lim, linelimit + Lines longer than this value are not reordered or highlighted. +ru, ruler + Indicates when to redraw the status line: + * 0: never. + * 1: always. + * 2: when multiple windows are visible. + * 4: when the current file changes. +hist, history + Indicates the number of lines remembered for ex, search, and + pipe prompts. Zero disables command history. +ai, autoindent + As in vi(1). +aw, autowrite + As in vi(1). Some commands check the current buffer's modified + status, and fail if it has unsaved changes (e.g., :n/:prev, + :ta/:po, :mak). For such commands, if the autowrite option is + set, the buffer is saved automatically before the command begins. + Alternatively, by appending a ! after the name of these commands, + they ignore the modified status of the buffer. +ic, ignorecase + As in vi(1). +ts, tabstop + As in vi(1). +wa, writeany + As in vi(1). + +MARKS AND BUFFERS +----------------- + +Special marks: +- * the position of the previous change +- [ the first line of the previous change +- ] the last line of the previous change + +Special yank buffers: +- / the previous search keyword +- : the previous ex command +- ! the previous pipe command +- % the name of the current file +- " the default yank buffer +- ; the current line +- . the last vi command +- # cursor line number +- ^ cursor line offset +- ] the word under the cursor +- \/ search history +- \: ex command history +- \! pipe command history + +QUICK ACCESS +------------ + +When q is pressed in normal mode, Neatvi prints the list of buffers at +the bottom of the screen and waits for a key. + +- If the key is a digit, it switches to its corresponding buffer. +- If the key is enter, it switches to the first buffer. +- If the key is , (comma), Neatvi lists the lines in ./ls as files, + and prompts for a keyword to filter them. An empty keyword selects + the first item, and \N (for digit N) selects the N-th item. +- If the key is =, Neatvi lists the tags in ./tags, and prompts + for a keyword to filter them. +- If the key is ;, Neatvi lists the buffers and prompts for a keyword + to filter them. +- If the key is *, Neatvi lists the positions in the * yank buffer + and prompts for a keyword to filter them. +- If it is a letter and the extended buffer with that letter (\X for + letter X) is defined, the contents of that buffer is executed. +- If the key is a letter, but the extended buffer with that letter + is not defined, Neatvi executes ECMD (defined in conf.h) with the + following parameters: i) the letter, ii) the current file, iii) the + current line number, and iv) the current line offset. What ECMD + writes to its standard output, Neatvi executes as ex commands. + +ECMD commands can be used to implement interesting features; neatvi.sh +is an example ECMD shell script. + +AUTO-COMPLETION +--------------- + +When the hist option is nonzero, Neatvi suggests the most recent +matching entry when reading user input for :, /, and ! prompts; ^a +completes the input using the suggestion. + +LANGUAGE SERVER PROTOCOL +------------------------ + +Neatvi has an LSP client for finding the references of identifiers +and opening their definition locations. It assumes the current +directory to be the project root when it executes the LSP server. +When the LSP server is running, the ^] vi command executes :lspg +instead of :ta. The commands section lists lsp* commands. + +Note that for C/C++, LSP servers usually require the +compile_commands.json file to be present in the project root for +indexing the source files; this file can be generated manually, or +using available tools. + +EXAMPLE .NEATVI +--------------- + +" This an example ~/.neatvi file. + +" general options, including hl, mk, and mc commands +set hist=20 +mc  ^v +mc  ^r +hl & - 8 + +" Q-commands (quick access commands); they can also be done using +" ECMD; see the quick access section and neatvi.sh. + +" qa invokes git-add +rs \a +!git add % +. +" qq switches to the previous buffer +rs \q +e # +. +" ql opens ./ls file +rs \l +e ls +. +" qn jumps to the next quick fix item (cn) +rs \n +cn +. +" qg uses git-grep to find the occurrences of the word under the cursor +rs \g +rx * git grep -Fwn --column ']' \| sed -E 's/^([^:]+:[^:]+:[^:]+:)[ ]*([^ ])/\\1 \\2/' +e /tmp/.qfix.ls | %d - | pu * | w! | 1 | cr +. +" qp starts an LSP server for C/C++ +rs \p +lsp clangd --background-index +. +" qP starts an LSP server for Go +rs \P +lsp gopls +. +" qf finds references to the word under the cursor (lspf) +rs \f +lspf +e /tmp/.qfix.ls | %d - | pu * | w! | 1 | cr +. +" qd shows symbol documentation (lspd) +rs \d +lspd l +e /tmp/.vidoc.txt | %d - | pu l | w! | 1 +. + +SYNTAX HIGHLIGHTING +------------------- + +The default set of syntax highlighting rules are as follows. + +" general text +hl . - " all text +hl ^ - - 11 " current line (hll option) +hl ~ r " text in reverse direction +hl & - 2 " mapped characters (mc command) +hl , - 2 " lines after EOF + +" for programming languages +hl k b 3 " general keywords +hl r - 2 " control flow keywords +hl o b 3 " operators +hl p b 2 " preprocessor directives +hl m b 4 " imported packages +hl t - 3 " built-in types and values +hl b - 3 " built-in functions +hl c i 4 " comments +hl d b 4 " top-level definitions +hl f b " called functions +hl 0 - 5 " numerical constants +hl h - 5 " character constants +hl s - 5 " string literals +hl v - 3 " macros +hl i - " identifiers +hl x - 6 " identifier context + +" ex-mode and status line +hl _ - 7 0 " status line +hl Z - 7 0 " status line of inactive windows +hl N b 2 " status line normal mode +hl I b 4 " status line insert mode +hl F b 3 " status line file name +hl L b 5 " status line line number +hl W b 1 " status line w/r flags +hl K - " keymap name +hl C - 5 " status line column number +hl T - " status line line count +hl X b 7 0 " ex-mode output +hl : - 7 0 " ex-mode prompts +hl ! b 7 0 " ex-mode warnings +hl Q b 7 0 " quick leap header +hl U - " quick leap items +hl D - " quick leap item dirname +hl B b 3 " quick leap item basename +hl 1 b 1 " quick leap item identifiers +hl 2 - 4 " quick leap item description + +" diff file type +hl xD b " diff header +hl x@ - 6 " diff hunk information line +hl x- - 1 " diff deleted lines +hl x+ - 2 " diff added lines +hl x= - 0 " diff preserved lines + +" file listings +hl xd b 8 " path dirname +hl xb b 1 " path basename +hl xn - 2 " path line number +hl xs - 6 " path symbol +hl xl - 8 " the rest of the line +hl x# - 4 " comments + +" messages +hl mh b 6 " mail headers +hl ms b 4 " Subject header +hl mf b 2 " From header +hl mt b 5 " To header +hl mc b 5 " CC header +hl mr i 2 " replied text +hl ml b - 3 " labels + +" neatmail listing +hl mN b - 6 " new mails +hl mA b 0 5 " high priority +hl mB b 0 3 " priority level 2 +hl mC b 0 3 " priority level 3 +hl mD - 8 " low priority +hl mF b - 7 " flagged +hl mI i 7 " ignored lines +hl mX b " commands +hl mS b 6 " status flags +hl m0 - 12 " ignored zeros of the message number +hl m1 b 4 " message number +hl mM - 3 " mbox path +hl mR - 5 " message from +hl mU - 5 " message subject diff --git a/Apps/Neatvi/main/Source/conf.c b/Apps/Neatvi/main/Source/conf.c new file mode 100644 index 0000000..5621dd2 --- /dev/null +++ b/Apps/Neatvi/main/Source/conf.c @@ -0,0 +1,305 @@ +#include +#include +#include +#include "vi.h" +#include "conf.h" +#include "kmap.h" + +int conf_dirmark(int idx, char **pat, int *ctx, int *dir, int *grp) +{ + if (idx < 0 || idx >= LEN(dirmarks)) + return 1; + if (pat) + *pat = dirmarks[idx].pat; + if (ctx) + *ctx = dirmarks[idx].ctx; + if (dir) + *dir = dirmarks[idx].dir; + if (grp) + *grp = dirmarks[idx].grp; + return 0; +} + +int conf_dircontext(int idx, char **pat, int *ctx) +{ + if (idx < 0 || idx >= LEN(dircontexts)) + return 1; + if (pat) + *pat = dircontexts[idx].pat; + if (ctx) + *ctx = dircontexts[idx].dir; + return 0; +} + +static int conf_hldefs[384] = { + /* general text */ + ['.'] = 0, /* all text */ + ['^'] = SYN_BGMK(11), /* current line highlight (hll option) */ + ['~'] = SYN_RV, /* text in reverse direction */ + ['&'] = 4, /* mapped characters (mc command) */ + [','] = SYN_BD | 4, /* lines after EOF */ + /* for programming languages */ + ['k'] = SYN_BD | 3, /* general keywords */ + ['r'] = 2, /* control flow keywords */ + ['o'] = SYN_BD | 3, /* operators */ + ['p'] = SYN_BD | 2, /* preprocessor directives */ + ['n'] = SYN_BD | 4, /* include directives */ + ['m'] = SYN_BD | 4, /* imported packages */ + ['t'] = 3, /* built-in types and values */ + ['b'] = 3, /* built-in functions */ + ['c'] = SYN_IT | 4, /* comments */ + ['d'] = SYN_BD | 4, /* top-level definitions */ + ['f'] = SYN_BD, /* called functions */ + ['0'] = 5, /* numerical constants */ + ['h'] = 5, /* character constants */ + ['s'] = 5, /* string literals */ + ['v'] = 3, /* macros */ + ['i'] = 0, /* identifiers */ + ['x'] = 6, /* identifier context */ + /* ex-mode and status line */ + ['_'] = SYN_BGMK(0) | 7, /* status line */ + ['Z'] = SYN_BGMK(0) | 7, /* status line of inactive windows */ + ['N'] = 2 | SYN_BD, /* status line normal mode */ + ['I'] = 4 | SYN_BD, /* status line insert mode */ + ['F'] = 3 | SYN_BD, /* status line file name */ + ['L'] = 5 | SYN_BD, /* status line line number */ + ['W'] = 1 | SYN_BD, /* status line w/r flags */ + ['K'] = 0, /* keymap name */ + ['C'] = 5, /* status line column number */ + ['T'] = 0, /* status line line count */ + ['X'] = SYN_BGMK(0) | 7 | SYN_BD, /* ex-mode output lines */ + [':'] = SYN_BGMK(0) | 7, /* ex-mode prompts */ + ['!'] = SYN_BGMK(0) | 7 | SYN_BD, /* ex-mode warnings */ + ['Q'] = SYN_BGMK(0) | 7 | SYN_BD, /* quick leap header */ + ['U'] = 0, /* quick leap list */ + ['D'] = 0, /* quick leap item dirname */ + ['B'] = 3 | SYN_BD, /* quick leap item basename */ + ['1'] = 1 | SYN_BD, /* quick leap item identifier */ + ['2'] = 4, /* quick leap item description */ + /* diff file type */ + [SX('D')] = SYN_BD, /* diff header */ + [SX('@')] = 6, /* diff hunk information line */ + [SX('-')] = 1, /* diff deleted lines */ + [SX('+')] = 2, /* diff added lines */ + [SX('=')] = 0, /* diff preserved lines */ + /* file listings */ + [SX('d')] = 8 | SYN_BD, /* path dirname */ + [SX('b')] = 1 | SYN_BD, /* path basename */ + [SX('n')] = 2, /* path line number */ + [SX('s')] = 6, /* path symbol name */ + [SX('l')] = 8, /* the rest of the line */ + [SX('c')] = 4, /* comments */ + /* messages */ + [SM('h')] = 6 | SYN_BD, /* mail headers */ + [SM('s')] = 4 | SYN_BD, /* subject */ + [SM('f')] = 2 | SYN_BD, /* from */ + [SM('t')] = 5 | SYN_BD, /* to */ + [SM('c')] = 5 | SYN_BD, /* cc */ + [SM('r')] = 2 | SYN_IT, /* replied text */ + [SM('l')] = SYN_BGMK(3) | SYN_BD, /* label */ + /* neatmail listing */ + [SM('N')] = SYN_BD | SYN_FGMK(0) | SYN_BGMK(6), /* new mails */ + [SM('A')] = SYN_BD | SYN_FGMK(0) | SYN_BGMK(5), /* high priority */ + [SM('B')] = SYN_BD | SYN_FGMK(0) | SYN_BGMK(3), /* priority level 2 */ + [SM('C')] = SYN_BD | SYN_FGMK(0) | SYN_BGMK(3), /* priority level 3 */ + [SM('D')] = 8, /* low priority */ + [SM('F')] = SYN_BD | SYN_BGMK(7), /* flagged */ + [SM('I')] = 7 | SYN_IT, /* ignored lines */ + [SM('X')] = SYN_BD, /* commands */ + [SM('S')] = 6 | SYN_BD, /* status flags */ + [SM('0')] = 12, /* ignored zeros of message numbers */ + [SM('1')] = 4 | SYN_BD, /* message numbers */ + [SM('M')] = 3, /* mbox paths */ + [SM('R')] = 5, /* message from */ + [SM('U')] = 5, /* message subject */ +}; + +int conf_hlnum(char *name) +{ + if (name[0] == 'x' && isprint((unsigned char) name[1])) + return SX(name[1]); + if (name[0] == 'm' && isprint((unsigned char) name[1])) + return SM(name[1]); + return name[0]; +} + +int conf_hl(int id) +{ + return id >= 0 && id < LEN(conf_hldefs) ? conf_hldefs[id] : 0; +} + +void conf_hlset(int id, int att) +{ + if (id >= 0 && id < LEN(conf_hldefs)) + conf_hldefs[id] = att; +} + +int conf_highlight(int idx, char **ft, int **att, char **pat, int *end) +{ + if (idx < 0 || idx >= LEN(highlights)) + return 1; + if (ft) + *ft = highlights[idx].ft; + if (att) + *att = highlights[idx].att; + if (pat) + *pat = highlights[idx].pat; + if (end) + *end = highlights[idx].end; + return 0; +} + +int conf_filetype(int idx, char **ft, char **pat) +{ + if (idx < 0 || idx >= LEN(filetypes)) + return 1; + if (ft) + *ft = filetypes[idx].ft; + if (pat) + *pat = filetypes[idx].pat; + return 0; +} + +int conf_mode(void) +{ + return MKFILE_MODE; +} + +char *kmap_map(int id, int key) +{ + static char cs[4]; + cs[0] = key; + return id < LEN(kmaps) && kmaps[id][key] ? kmaps[id][key] : cs; +} + +void kmap_def(int id, int key, char *def) +{ + static char defs[512]; + static int defs_pos; + int len = strlen(def) + 1; + if (id >= 0 && id < LEN(kmaps) && key >= 0 && key < 256) { + if (len < sizeof(defs) - defs_pos) { + memcpy(defs + defs_pos, def, len); + kmaps[id][key] = defs + defs_pos; + defs_pos += len; + } + } +} + +int kmap_find(char *name) +{ + int i; + for (i = 0; i < LEN(kmaps); i++) + if (name && kmaps[i][0] && !strcmp(name, kmaps[i][0])) + return i; + if (!kmaps[LEN(kmaps) - 1][0]) { + kmap_def(LEN(kmaps) - 1, 0, name); + return LEN(kmaps) - 1; + } + return -1; +} + +char *conf_digraph(int c1, int c2) +{ + int i; + for (i = 0; i < LEN(digraphs); i++) + if (digraphs[i][0][0] == c1 && digraphs[i][0][1] == c2) + return digraphs[i][1]; + return NULL; +} + +char *conf_definition(char *ft) +{ + int i; + for (i = 0; i < LEN(filetypes); i++) + if (!strcmp(ft, filetypes[i].ft) && filetypes[i].def) + return filetypes[i].def; + return "^%s\\>"; +} + +char *conf_section(char *ft) +{ + int i; + for (i = 0; i < LEN(filetypes); i++) + if (!strcmp(ft, filetypes[i].ft) && filetypes[i].sec) + return filetypes[i].sec; + return "^\\{"; +} + +char *conf_ecmd(void) +{ + return ECMD; +} + +/* character placeholders */ +static struct mapch { + char s[6]; /* the source character */ + char d[16]; /* the placeholder */ + int wid; /* the width of the placeholder */ +} mapch[64]; + +static int mapch_cnt; +static char mapch_map[256]; + +static void mapch_init(void) +{ + static int called; + if (!called) { + called = 1; + mapch_def("‌", "-", 1); + mapch_def("‍", "-", 1); + mapch_def("ً", "ـً", 1); + mapch_def("ٌ", "ـٌ", 1); + mapch_def("ٍ", "ـٍ", 1), + mapch_def("َ", "ـَ", 1); + mapch_def("ُ", "ـُ", 1); + mapch_def("ِ", "ـِ", 1); + mapch_def("ّ", "ـّ", 1); + mapch_def("ْ", "ـْ", 1); + mapch_def("ٓ", "ـٓ", 1); + mapch_def("ٔ", "ـٔ", 1); + mapch_def("ٕ", "ـٕ", 1); + mapch_def("ٰ", "ـٰ", 1); + } +} + +void mapch_def(char *s, char *d, int wid) +{ + int i; + mapch_init(); + for (i = 0; i < mapch_cnt; i++) + if (!mapch[i].s[0] || uc_code(s) == uc_code(mapch[i].s)) + break; + if (i < LEN(mapch)) { + struct mapch *mc = &mapch[i]; + int c = (unsigned char) s[0]; + snprintf(mc->s, sizeof(mc->s), "%s", d[0] ? s : ""); + snprintf(mc->d, sizeof(mc->d), "%s", d); + mc->wid = wid >= 0 ? wid : ren_wid(d); + mapch_map[c] = 1; + mapch_cnt = MAX(mapch_cnt, i + 1); + } +} + +char *mapch_get(char *s, int *wid) +{ + int c = (unsigned char) s[0]; + int i; + if (!mapch_cnt) + mapch_init(); + if (mapch_map[c]) { + for (i = 0; i < mapch_cnt; i++) { + struct mapch *mc = &mapch[i]; + if (s[0] == mc->s[0] && uc_code(s) == uc_code(mc->s)) { + if (wid) + *wid = mc->wid; + return mc->d; + } + } + } + if (wid) + *wid = 1; + if (uc_isbell(s)) + return "�"; + return NULL; +} diff --git a/Apps/Neatvi/main/Source/conf.h b/Apps/Neatvi/main/Source/conf.h new file mode 100644 index 0000000..85dc24c --- /dev/null +++ b/Apps/Neatvi/main/Source/conf.h @@ -0,0 +1,210 @@ +/* neatvi configuration file */ + +/* access mode of new files */ +#define MKFILE_MODE 0600 + +/* map file names to file types */ +static struct filetype { + char *ft; /* file type */ + char *pat; /* file name pattern */ + char *def; /* pattern for global definitions (for gd command) */ + char *sec; /* section start pattern (for [[ and ]] commands) */ +} filetypes[] = { + {"c", "\\.[hc]$", "^([a-zA-Z_].*)?\\<%s\\>.*([^;]|[^)];)$"}, + {"roff", "\\.(ms|me|mom|tr|roff|tmac|[1-9])$", "^\\.(de|nr|ds) +%s\\>"}, + {"tex", "\\.tex$"}, + {"msg", "letter$|mbox$|mail$"}, + {"mk", "Makefile$|makefile$|\\.mk$", "^%s:"}, + {"sh", "\\.sh$", "^(function +)?%s(\\(\\))? *\\{", "^(function +)?[a-zA-Z_0-9]+(\\(\\))? *\\{$"}, + {"go", "\\.go$", "^(func|var|const|type)( +\\(.*\\))? +%s\\>", "^(func|type)\\>.*\\{$"}, + {"py", "\\.py$", "^(def|class) +\\<%s\\>", "^(def|class) "}, + {"bib", "bib$"}, + {"nm", "\\.nm$"}, + {"diff", "\\.(patch|diff)$"}, + {"ls", "ls$"}, + {"ex", "\\.neatvi$"}, + {"txt", "$"}, /* matches everything; must be the last pattern */ +}; + +#define SM(c) (128 + c) +#define SX(c) (256 + c) + +/* syntax highlighting patterns */ +static struct highlight { + char *ft; /* the filetype of this pattern */ + int att[16]; /* attributes of the matched groups */ + char *pat; /* regular expression */ + int end; /* the group ending this pattern */ +} highlights[] = { + /* status bar */ + {"---", {'_', 0, 'N', 'I', 'L', 'W', 'F', 'K', 'T', 'C'}, + "^((N)|(I))([0-9]+) +([^ ]) +([^ ]+) +([^ ]+) +([0-9]+) +C([0-9]+).*$"}, + {"---", {'_', 'W', 'L', 'W', 'F'}, "^([WR])([0-9]+) ([^ ])([^ ]*).*$"}, + {"---", {'!'}, "^E .*$"}, + {"---", {'U', '1', 'D', 0, 'B', '2', '2'}, + "^\\[([-0-9])\\] +(/?([^ /:]+/+)*)([^ /:]+)(:[0-9]+:)?(.*)$"}, + {"---", {'U'}, "^/?\\[-\\].*$"}, + {"---", {'Q', 'N', 'F'}, "^LEAP ([A-Z]+) +[^ ]+ +([^ ]+)[^\n]*\n?"}, + {"---", {'_'}, "^.*$\n?"}, + /* ex mode */ + {"-ex", {':'}, "^[:/?!].*$"}, + {"-ex", {'X'}, "^.*$\n?"}, + + /* C */ + {"c", {'t'}, "\\<(signed|unsigned|char|short|int|long|float|double|void|struct|enum|union|typedef)\\>"}, + {"c", {'k'}, "\\<(static|extern|register)\\>"}, + {"c", {'r'}, "\\<(return|for|while|if|else|do|sizeof|goto|switch|case|default|break|continue)\\>"}, + {"c", {'c'}, "//.*$"}, + {"c", {'c'}, "/\\*([^*]|\\*+[^*/])*\\*+/"}, + {"c", {'m', 'p'}, "^#([ \t]*include).*"}, + {"c", {'m', 'p'}, "^#([ \t]*[a-zA-Z0-9_]+)"}, + {"c", {0, 'f'}, "([a-zA-Z][a-zA-Z0-9_]+)\\(", 1}, + {"c", {'s'}, "\"([^\"\\]|\\\\.)*\""}, + {"c", {'h'}, "'([^\\]|\\\\.)'"}, + {"c", {'0'}, "[-+]?\\<(0[xX][0-9a-fA-F]+|[0-9]+)\\>"}, + {"c", {'c'}, "^\t*(/\\*.*| \\*.*| \\*\\//)$"}, + {"c", {'i'}, "[a-zA-Z][a-zA-Z0-9_]*"}, + + /* troff */ + {"roff", {0, 'k', 'd'}, "^[.'][ \t]*(SH)(.*)$"}, + {"roff", {0, 'k', 'd'}, "^[.'][ \t]*de (.*)$"}, + {"roff", {0, 'b'}, "^[.'][ \t]*([^ \t\\]*)", 1}, + {"roff", {'s'}, "\"([^\"]|\"\")*\"?"}, + {"roff", {'c'}, "\\\\\".*$"}, + {"roff", {'b'}, "\\\\{1,2}[*$fgkmns]([^[(]|\\(..|\\[[^]]*\\])"}, + {"roff", {'v'}, "\\\\([^[(*$fgkmns]|\\(..|\\[[^]]*\\])"}, + {"roff", {'s'}, "\\$[^$]+\\$"}, + {"roff", {'0'}, "[-+]?\\<([0-9]+(\\.[0-9]+)?)\\>"}, + + /* tex */ + {"tex", {0, 'k', 0, 0, 'm', 0, 'f'}, + "\\\\([^[{ \t]+)((\\[([^][]+)\\])|(\\{([^}]*)\\}))*"}, + {"tex", {'s'}, "\\$[^$]+\\$"}, + {"tex", {'c'}, "%.*$"}, + + /* mail */ + {"msg", {SM('h')}, "^From .*20..$"}, + {"msg", {SM('h'), SM('s')}, "^Subject: (.*)$"}, + {"msg", {SM('h'), SM('f')}, "^From: (.*)$"}, + {"msg", {SM('h'), SM('t')}, "^To: (.*)$"}, + {"msg", {SM('h'), SM('c')}, "^Cc: (.*)$"}, + {"msg", {SM('h')}, "^[A-Z][-A-Za-z]+: .+$"}, + {"msg", {SM('r')}, "^> .*$"}, + + /* makefile */ + {"mk", {0, 'd'}, "^([A-Za-z_][A-Za-z0-9_]*)[ \t]*="}, + {"mk", {'v'}, "\\$\\([a-zA-Z0-9_]+\\)"}, + {"mk", {'c'}, "#.*$"}, + {"mk", {0, 'f'}, "([A-Za-z_%.]+):"}, + + /* shell script */ + {"sh", {0, 'k', 'd'}, "^(function +)?([a-zA-Z_0-9]+) *(\\(\\))? *\\{"}, + {"sh", {'r'}, "\\<(break|case|continue|do|done|elif|else|esac|fi|for|if|in|then|until|while|return)\\>"}, + {"sh", {'s'}, "\"([^\"\\]|\\\\.)*\""}, + {"sh", {'s'}, "'[^']*'"}, + {"sh", {'s'}, "`([^`\\]|\\\\.)*`"}, + {"sh", {'v'}, "\\$(\\{[^}]+\\}|[a-zA-Z_0-9]+|[!#$?*@-])"}, + {"sh", {'v'}, "\\$\\([^()]+\\)"}, + {"sh", {'f'}, "^\\. .*$"}, + {"sh", {'c'}, "#.*$"}, + + /* go */ + {"go", {0, 'k', 'i', 'd'}, "^\\<(func) (\\([^()]+\\) )?([a-zA-Z0-9_]+)\\>"}, + {"go", {'k'}, "\\<(func|type|var|const|package)\\>"}, + {"go", {'p', 'm'}, "^import[ \t]+([^ ]+)"}, + {"go", {'k'}, "\\<(import|interface|struct)\\>"}, + {"go", {'r'}, "\\<(break|case|chan|continue|default|defer|else|fallthrough|for|go|goto|if|map|range|return|select|switch)\\>"}, + {"go", {0, 'b'}, "\\<(append|copy|delete|len|cap|make|new|complex|real|imag|close|panic|recover|print|println|int|int8|int16|int32|int64|uint|uint8|uint16|uint32|uint64|uintptr|float32|float64|complex128|complex64|bool|byte|rune|string|error)\\>\\("}, + {"go", {'t'}, "\\<(true|false|iota|nil|int8|int16|int32|int64|int|uint8|uint16|uint32|uint64|uint|uintptr|float32|float64|complex128|complex64|bool|byte|rune|string|error)\\>"}, + {"go", {'c'}, "//.*$"}, + {"go", {'c'}, "/\\*([^*]|\\*+[^*/])*\\*+/"}, + {"go", {0, 'f'}, "([a-zA-Z][a-zA-Z0-9_]*)\\(", 1}, + {"go", {'i'}, "[a-zA-Z][a-zA-Z0-9_]*"}, + {"go", {'s'}, "\"([^\"\\]|\\\\.)*\""}, + {"go", {'h'}, "'([^']|\\\\')*'"}, + {"go", {'s'}, "`([^`]|\\\\`)*`"}, + {"go", {'0'}, "[-+]?\\<(0[xX][0-9a-fA-F]+|[0-9.]+)\\>"}, + {"go", {'c'}, "^\t*(/\\*.*| \\*.*| \\*\\//)$"}, + + /* refer */ + {"bib", {0, SM('h'), SM('l')}, "^(%L) +(.*)$", 1}, + {"bib", {0, SM('h'), SM('f')}, "^(%A) (.*)$", 1}, + {"bib", {0, SM('h'), SM('s')}, "^(%T) (.*)$", 1}, + {"bib", {0, SM('h'), SM('t')}, "^(%[JB]) (.*)$", 1}, + {"bib", {0, SM('h')}, "^(%[A-Z]) (.*)$", 1}, + {"bib", {'c'}, "^#.*$", 1}, + + /* python */ + {"py", {'c'}, "#.*$"}, + {"py", {'k'}, "\\<(class|def)\\>"}, + {"py", {'k'}, "\\<(and|or|not|is|in)\\>"}, + {"py", {0, 0, 'p', 'i', 'p', 'm'}, "^((from)[ \t]+([^ ]+)[ \t]+)?(import)[ \t]+([^ ]+)"}, + {"py", {'k'}, "\\<(import|from|global|lambda|del)\\>"}, + {"py", {'r'}, "\\<(for|while|if|elif|else|pass|return|break|continue)\\>"}, + {"py", {'r'}, "\\<(try|except|as|raise|finally|with)\\>"}, + {"py", {0, 'f'}, "([a-zA-Z][a-zA-Z0-9_]+)\\(", 1}, + {"py", {'s'}, "[\"']([^\"'\\]|\\\\.)*[\"']"}, + {"py", {'i'}, "[a-zA-Z][a-zA-Z0-9_]*"}, + + /* neatmail listing */ + {"nm", {0, SM('S'), SM('0'), SM('M'), SM('1'), SM('R'), SM('U')}, + "^([ROU][^ABCDHML0-9]?)(0*)([0-9]+)(@[^ \t]*)? *\t\\[([^\t]*)\\]\t *\\[([^\t]*)\\].*"}, + {"nm", {SM('N')}, "^[N].*$"}, + {"nm", {SM('A')}, "^[A-Z][HA].*$"}, + {"nm", {SM('B')}, "^[A-Z][MB].*$"}, + {"nm", {SM('C')}, "^[A-Z][C].*$"}, + {"nm", {SM('D')}, "^[A-Z][LD].*$"}, + {"nm", {SM('F')}, "^[F].*$"}, + {"nm", {SM('I')}, "^\t.*$"}, + {"nm", {SM('X')}, "^:.*$"}, + + /* diff */ + {"diff", {SX('-')}, "^-.*$"}, + {"diff", {SX('+')}, "^\\+.*$"}, + {"diff", {SX('@')}, "^@.*$"}, + {"diff", {SX('D')}, "^diff .*$"}, + + /* directory listing */ + {"ls", {0, SX('d'), 0, SX('b'), SX('n'), SX('s'), SX('l')}, + "^(/?([^#/: \t]+/)*)([^/: \t]+)\\>(:[0-9]+:)?([^\t]+\t)?(.*)$"}, + {"ls", {SX('c')}, "^#.*$"}, + + /* .neatvi */ + {"ex", {'c'}, "\".*$"}, + {"ex", {'b', 'd'}, "^rs[ \t]+([^ ]+)"}, + {"ex", {0, 'b', 'f'}, "^[ \t]*(@|rs|ra|rx|rk)[ \t]+([^ ]+)"}, + {"ex", {0, '0', 0, 'b'}, "^[ \t]*(([-0-9:%,;.$+]|'.|`.|/[^/]*/|\\?[^?]*\\?)*)[ \t]*([a-z!]+)"}, + {"ex", {'r'}, "^\\.$"}, +}; + +/* right-to-left characters (used only in dircontexts[] and dirmarks[]) */ +#define CR2L "ءآأؤإئابةتثجحخدذرزسشصضطظعغـفقكلمنهوىييپچژکگیۀ‌‍؛،»«؟ًٌٍَُِّْٔ" +/* neutral characters (used only in dircontexts[] and dirmarks[]) */ +#define CNEUT "-!\"#$%&'()*+,./:;<=>?@^_`{|}~ " + +/* direction context; specifies the base direction of lines */ +static struct dircontext { + int dir; + char *pat; +} dircontexts[] = { + {-1, "^[" CR2L "]"}, + {+1, "^[a-zA-Z_0-9]"}, +}; + +/* direction marks; the direction of contiguous characters in a line */ +static struct dirmark { + int ctx; /* the direction context for this mark; 0 means any */ + int dir; /* the direction of the matched text */ + int grp; /* the nested subgroup; 0 means no groups */ + char *pat; +} dirmarks[] = { + {+0, +1, 1, "\\\\\\*\\[([^]]+)\\]"}, + {+1, -1, 0, "[" CR2L "][" CNEUT CR2L "]*[" CR2L "]"}, + {-1, +1, 0, "[a-zA-Z0-9_][^" CR2L "\\\\`$']*[a-zA-Z0-9_]"}, + {+0, +1, 0, "\\$([^$]+)\\$"}, + {+0, +1, 1, "\\\\[a-zA-Z0-9_]+\\{([^}]+)\\}"}, + {-1, +1, 0, "\\\\[^ \t" CR2L "]+"}, +}; + +/* external commands */ +#define ECMD "neatvi.sh" diff --git a/Apps/Neatvi/main/Source/dir.c b/Apps/Neatvi/main/Source/dir.c new file mode 100644 index 0000000..56c8e9f --- /dev/null +++ b/Apps/Neatvi/main/Source/dir.c @@ -0,0 +1,126 @@ +#include +#include +#include +#include "vi.h" + +static struct rset *dir_rslr; /* pattern of marks for left-to-right strings */ +static struct rset *dir_rsrl; /* pattern of marks for right-to-left strings */ +static struct rset *dir_rsctx; /* direction context patterns */ + +static int dir_match(char **chrs, int beg, int end, int ctx, int *rec, + int *r_beg, int *r_end, int *c_beg, int *c_end, int *dir) +{ + int subs[16 * 2]; + struct rset *rs = ctx < 0 ? dir_rsrl : dir_rslr; + struct sbuf str = {0}; + int grp; + int flg = (beg ? RE_NOTBOL : 0) | (chrs[end][0] ? RE_NOTEOL : 0); + int found = -1; + sbuf_mem(&str, chrs[beg], chrs[end] - chrs[beg]); + if (rs) + found = rset_find(rs, sbuf_buf(&str), LEN(subs) / 2, subs, flg); + if (found >= 0 && r_beg && r_end && c_beg && c_end) { + char *s = sbuf_buf(&str); + conf_dirmark(found, NULL, NULL, dir, &grp); + *r_beg = beg + uc_off(s, subs[0]); + *r_end = beg + uc_off(s, subs[1]); + *c_beg = subs[grp * 2 + 0] >= 0 ? + beg + uc_off(s, subs[grp * 2 + 0]) : *r_beg; + *c_end = subs[grp * 2 + 1] >= 0 ? + beg + uc_off(s, subs[grp * 2 + 1]) : *r_end; + *rec = grp > 0; + } + sbuf_free(&str); + return found < 0; +} + +static void dir_reverse(int *ord, int beg, int end) +{ + end--; + while (beg < end) { + int tmp = ord[beg]; + ord[beg] = ord[end]; + ord[end] = tmp; + beg++; + end--; + } +} + +/* reorder the characters based on direction marks and characters */ +static void dir_fix(char **chrs, int *ord, int dir, int beg, int end) +{ + int r_beg, r_end, c_beg, c_end; + int c_dir, c_rec; + while (beg < end && !dir_match(chrs, beg, end, dir, &c_rec, + &r_beg, &r_end, &c_beg, &c_end, &c_dir)) { + if (dir < 0) + dir_reverse(ord, r_beg, r_end); + if (c_dir < 0) + dir_reverse(ord, c_beg, c_end); + if (c_beg == r_beg) + c_beg++; + if (c_rec) + dir_fix(chrs, ord, c_dir, c_beg, c_end); + beg = r_end; + } +} + +/* return the direction context of the given line */ +int dir_context(char *s) +{ + int found = -1; + int dir; + if (xtd > +1) + return +1; + if (xtd < -1) + return -1; + if (xtd == 0 && ~((unsigned char) *s) & 0x80) + return +1; + if (dir_rsctx) + found = rset_find(dir_rsctx, s ? s : "", 0, NULL, 0); + if (!conf_dircontext(found, NULL, &dir)) + return dir; + return xtd < 0 ? -1 : +1; +} + +/* reorder the characters in s */ +void dir_reorder(char *s, int *ord) +{ + int n; + char **chrs = uc_chop(s, &n); + int dir = dir_context(s); + if (n && chrs[n - 1][0] == '\n') { + ord[n - 1] = n - 1; + n--; + } + dir_fix(chrs, ord, dir, 0, n); + free(chrs); +} + +void dir_init(void) +{ + char *relr[128]; + char *rerl[128]; + char *ctx[128]; + int curctx, i; + char *pat; + for (i = 0; !conf_dirmark(i, &pat, &curctx, NULL, NULL); i++) { + relr[i] = curctx >= 0 ? pat : NULL; + rerl[i] = curctx <= 0 ? pat : NULL; + } + dir_rslr = rset_make(i, relr, 0); + dir_rsrl = rset_make(i, rerl, 0); + for (i = 0; !conf_dircontext(i, &pat, NULL); i++) + ctx[i] = pat; + dir_rsctx = rset_make(i, ctx, 0); +} + +void dir_done(void) +{ + if (dir_rslr) + rset_free(dir_rslr); + if (dir_rsrl) + rset_free(dir_rsrl); + if (dir_rsctx) + rset_free(dir_rsctx); +} diff --git a/Apps/Neatvi/main/Source/ex.c b/Apps/Neatvi/main/Source/ex.c new file mode 100644 index 0000000..d4c0207 --- /dev/null +++ b/Apps/Neatvi/main/Source/ex.c @@ -0,0 +1,1697 @@ +#include +#include +#include +#include +#include +#include +#include +#include "vi.h" + +#define REG(s) ((s)[0] != '\\' ? (unsigned char) (s)[0] : 0x80 | (unsigned char) (s)[1]) + +int xrow, xoff, xtop; /* current row, column, and top row */ +int xleft; /* the first visible column */ +int xquit; /* exit if set */ +int xvis; /* visual mode */ +int xai = 1; /* autoindent option */ +int xic = 1; /* ignorecase option */ +int xaw; /* autowrite option */ +int xwa; /* writeany option */ +int xhl = 1; /* syntax highlight option */ +int xhll; /* highlight current line */ +int xtd = 0; /* current text direction */ +int xshape = 1; /* perform letter shaping */ +int xorder = 1; /* change the order of characters */ +int xkmap = 0; /* the current keymap */ +int xkmap_alt = 1; /* the alternate keymap */ +int xlim = 256; /* do not process lines longer than this */ +int xru = 1; /* show line number */ +int xhist = 0; /* number of history lines */ +int xvte = 0; /* workaround for vte-based terminals */ +int xts = 8; /* tabstop */ +static char xkwd[EXLEN]; /* the last searched keyword */ +static char xrep[EXLEN]; /* the last replacement */ +static int xkwddir; /* the last search direction */ +static int xgdep; /* global command recursion depth */ +static char **next; /* argument list */ +static int next_pos; /* position in argument list */ +static int xsource; /* executing :so */ + +static struct buf { + char ft[32]; /* file type */ + char *path; /* file path */ + struct lbuf *lb; + int row, off, top, left; + short id; /* buffer number */ + short td; /* text direction */ + long mtime; /* modification time */ +} bufs[16]; + +static int bufs_cnt = 0; /* number of allocated buffers */ + +static void bufs_free(int idx) +{ + if (bufs[idx].lb) { + free(bufs[idx].path); + lbuf_free(bufs[idx].lb); + memset(&bufs[idx], 0, sizeof(bufs[idx])); + } +} + +static int bufs_find(char *path) +{ + int i; + path = path[0] == '/' && path[1] == '\0' ? "" : path; + for (i = 0; i < LEN(bufs); i++) + if (bufs[i].path && !strcmp(bufs[i].path, path)) + return i; + return -1; +} + +static int bufs_findroom(void) +{ + int i; + for (i = 0; i < LEN(bufs) - 1; i++) + if (!bufs[i].lb) + break; + return i; +} + +static void bufs_init(int idx, char *path) +{ + bufs_free(idx); + bufs[idx].id = ++bufs_cnt; + bufs[idx].path = uc_dup(path); + bufs[idx].lb = lbuf_make(); + bufs[idx].row = 0; + bufs[idx].off = 0; + bufs[idx].top = 0; + bufs[idx].left = 0; + bufs[idx].td = +1; + bufs[idx].mtime = -1; + strcpy(bufs[idx].ft, syn_filetype(path)); +} + +static int bufs_open(char *path) +{ + int idx = bufs_findroom(); + path = path[0] == '/' && path[1] == '\0' ? "" : path; + bufs_init(idx, path); + return idx; +} + +static void bufs_store(void) +{ + bufs[0].row = xrow; + bufs[0].off = xoff; + bufs[0].top = xtop; + bufs[0].left = xleft; + bufs[0].td = xtd; +} + +static void bufs_load(void) +{ + xrow = bufs[0].row; + xoff = bufs[0].off; + xtop = bufs[0].top; + xleft = bufs[0].left; + xtd = bufs[0].td; + reg_put('%', bufs[0].path ? bufs[0].path : "", 0); +} + +static void bufs_shift(void) +{ + bufs_free(0); + memmove(&bufs[0], &bufs[1], sizeof(bufs) - sizeof(bufs[0])); + memset(&bufs[LEN(bufs) - 1], 0, sizeof(bufs[0])); + bufs_load(); +} + +static void bufs_switch(int idx) +{ + struct buf tmp; + bufs_store(); + memcpy(&tmp, &bufs[idx], sizeof(tmp)); + memmove(&bufs[1], &bufs[0], sizeof(tmp) * idx); + memcpy(&bufs[0], &tmp, sizeof(tmp)); + bufs_load(); +} + +static void bufs_number(void) +{ + int n = 0; + int i; + for (i = 0; i < LEN(bufs); i++) + if (bufs[i].lb != NULL) + bufs[i].id = ++n; + bufs_cnt = n; +} + +static long mtime(char *path) +{ + struct stat st; + if (!stat(path, &st)) + return st.st_mtime; + return -1; +} + +char *ex_path(void) +{ + return bufs[0].path; +} + +int ex_id(void) +{ + return bufs[0].id; +} + +struct lbuf *ex_lbuf(void) +{ + return bufs[0].lb; +} + +char *ex_filetype(void) +{ + return bufs[0].ft; +} + +/* replace % and # with current and alternate path names; returns a static buffer */ +static char *ex_pathexpand(char *src, int spaceallowed) +{ + static char sb_buf[EXLEN]; + struct sbuf sb = {sb_buf, sizeof(sb_buf)}; + while (*src && *src != '\n' && (spaceallowed || (*src != ' ' && *src != '\t'))) { + if (*src == '%' || *src == '#') { + int idx = *src == '#'; + if (!bufs[idx].path) { + ex_show("pathname \"%%\" or \"#\" is not set"); + return NULL; + } + sbuf_str(&sb, bufs[idx].path[0] ? bufs[idx].path : "/"); + src++; + } else if (sbuf_len(&sb) == 0 && *src == '=') { + char *cur = bufs[0].path; + char *dir = cur != NULL ? strrchr(cur, '/') : NULL; + if (cur != NULL && dir != NULL) { + sbuf_mem(&sb, cur, dir - cur); + sbuf_chr(&sb, '/'); + } + src++; + } else { + if (*src == '\\' && src[1]) + src++; + sbuf_chr(&sb, *src++); + } + } + return sbuf_buf(&sb); +} + +/* read :e +cmd arguments; returns a static buffer */ +static char *ex_plus(char **src0) +{ + static char sb_buf[EXLEN]; + struct sbuf sb = {sb_buf, sizeof(sb_buf)}; + char *src = *src0; + while (*src == ' ') + src++; + if (*src != '+') + return src; + while (*src && *src != ' ') { + if (src[0] == '\\' && src[1]) + src++; + sbuf_chr(&sb, *src++); + } + while (*src == ' ' || *src == '\t') + src++; + *src0 = src; + return sbuf_buf(&sb); +} + +/* read register name */ +static char *ex_reg(char *src, int *reg) +{ + while (*src == ' ') + src++; + if (src[0] == '\\' && src[1] == '"') + src++; + *reg = REG(src); + while (*src && *src != ' ' && *src != '\t') + src++; + while (*src == ' ' || *src == '\t') + src++; + return src; +} + +/* the previous search keyword */ +int ex_kwd(char **kwd, int *dir) +{ + if (kwd) + *kwd = xkwd; + if (dir) + *dir = xkwddir; + return xkwddir == 0; +} + +/* set the previous search keyword */ +void ex_kwdset(char *kwd, int dir) +{ + if (kwd) + snprintf(xkwd, sizeof(xkwd), "%s", kwd); + xkwddir = dir; +} + +static int ex_search(char **pat) +{ + char *pat_re; + struct rstr *re; + int dir, row; + int delim = **pat; + char *kw = re_read(pat); + if (kw != NULL && *kw) + ex_kwdset(kw, delim == '/' ? 1 : -1); + free(kw); + if (ex_kwd(&pat_re, &dir)) + return -1; + re = rstr_make(pat_re, xic ? RE_ICASE : 0); + if (!re) + return -1; + row = xrow + dir; + while (row >= 0 && row < lbuf_len(xb)) { + if (rstr_find(re, lbuf_get(xb, row), 0, NULL, 0) >= 0) + break; + row += dir; + } + rstr_free(re); + return row >= 0 && row < lbuf_len(xb) ? row : -1; +} + +static int ex_lineno(char **num) +{ + int n = xrow; + switch ((unsigned char) **num) { + case '.': + ++*num; + break; + case '$': + n = lbuf_len(xb) - 1; + ++*num; + break; + case '\'': + if (lbuf_jump(xb, (unsigned char) *++(*num), &n, NULL)) + return -1; + ++*num; + break; + case '/': + case '?': + n = ex_search(num); + break; + default: + if (isdigit((unsigned char) **num)) { + n = atoi(*num) - 1; + while (isdigit((unsigned char) **num)) + ++*num; + } + } + while (**num == '-' || **num == '+') { + int neg = *(*num)++ == '-'; + int val = isdigit((unsigned char) **num) ? atoi(*num) : 1; + n += neg ? -val : val; + while (isdigit((unsigned char) **num)) + (*num)++; + } + return n; +} + +/* parse ex command addresses */ +static int ex_region(char *loc, int *beg, int *end) +{ + int naddr = 0; + if (!strcmp("%", loc)) { + *beg = 0; + *end = MAX(0, lbuf_len(xb)); + return 0; + } + if (!*loc) { + *beg = xrow; + *end = xrow == lbuf_len(xb) ? xrow : xrow + 1; + return 0; + } + while (*loc) { + int end0 = *end; + *end = ex_lineno(&loc) + 1; + *beg = naddr++ ? end0 - 1 : *end - 1; + if (!naddr++) + *beg = *end - 1; + while (*loc && *loc != ';' && *loc != ',') + loc++; + if (!*loc) + break; + if (*loc == ';') + xrow = *end - 1; + loc++; + } + if (*beg < 0 && *end == 0) + *beg = 0; + if (*beg < 0 || *beg >= lbuf_len(xb)) + return 1; + if (*end < *beg || *end > lbuf_len(xb)) + return 1; + return 0; +} + +static char *lbuf_write(struct lbuf *lb, int beg, int end, char *path, int force, long ts) +{ + int fd; + if (end < 0) + end = lbuf_len(lb); + if (!force && ts > 0 && mtime(path) > ts) { + return "write failed: file changed"; + } else if (!xwa && !force && ts <= 0 && mtime(path) >= 0) { + return "write failed: file exists"; + } else if ((fd = open(path, O_WRONLY | O_CREAT, conf_mode())) < 0) { + return "write failed: cannot create file"; + } else if (lbuf_wr(lb, fd, beg, end) != 0 || close(fd) != 0) { + close(fd); + return "write failed"; + } + return NULL; +} + +static char *bufs_save(int idx, int force) +{ + struct buf *b = &bufs[idx]; + char *err = lbuf_write(b->lb, 0, -1, b->path, force, b->mtime); + if (err) + return err; + lbuf_saved(b->lb, 0); + b->mtime = mtime(b->path); + lsp_modified(b->path, b->ft); + return NULL; +} + +static int bufs_modified(int idx, char *msg) +{ + struct buf *b = &bufs[idx]; + if (!b->lb || !lbuf_modified(b->lb)) + return 0; + if (xaw && b->path[0]) + return bufs_save(idx, 0) != NULL; + if (msg) + ex_show(msg); + return 1; +} + +static int ec_buffer(char *loc, char *cmd, char *arg, char *txt) +{ + char *aliases = "%#^"; + char ln[128]; + int i; + if (!arg[0]) { + /* print buffer list */ + for (i = 0; i < LEN(bufs) && bufs[i].lb; i++) { + char c = i < strlen(aliases) ? aliases[i] : ' '; + char m = lbuf_modified(bufs[i].lb) ? '*' : ' '; + snprintf(ln, LEN(ln), "%2i %c %s %c", + (int) bufs[i].id, c, bufs[i].path, m); + ex_print(ln); + } + } else if (arg[0] == '!') { + /* delete buffer */ + bufs_shift(); + if (bufs[0].lb == NULL) + bufs_init(0, ""); + } else if (arg[0] == '~') { + /* reassign buffer ids */ + bufs_number(); + } else { + int id = arg[0] ? atoi(arg) : 0; + int idx = -1; + /* switch to the given buffer */ + if (isdigit((unsigned char) arg[0])) { /* buffer id given */ + for (idx = 0; idx < LEN(bufs); idx++) + if (bufs[idx].lb && id == bufs[idx].id) + break; + } else if (arg[0] == '-') { /* previous buffer */ + for (i = 0; i < LEN(bufs); i++) + if (bufs[i].lb && bufs[i].id < bufs[0].id) + if (idx < 0 || bufs[i].id > bufs[idx].id) + idx = i; + } else if (arg[0] == '+') { /* next buffer */ + for (i = 0; i < LEN(bufs); i++) + if (bufs[i].lb && bufs[i].id > bufs[0].id) + if (idx < 0 || bufs[i].id < bufs[idx].id) + idx = i; + } else { /* buffer alias given */ + char *r = strchr(aliases, (unsigned char) arg[0]); + idx = r ? r - aliases : -1; + } + if (idx >= 0 && idx < LEN(bufs) && bufs[idx].lb) { + if (!strchr(cmd, '!') && bufs_modified(0, "b: buffer modified")) + return 1; + bufs_switch(idx); + } else { + ex_show("b: no such buffer"); + return 1; + } + } + return 0; +} + +int ex_list(char **ls, int size) +{ + int i; + for (i = 0; i < LEN(bufs) && bufs[i].lb && i < size; i++) + ls[i] = bufs[i].path[0] ? bufs[i].path : "/"; + return i; +} + +static int ec_edit(char *loc, char *cmd, char *arg, char *txt) +{ + char *path, *pls; + int fd; + if (!strchr(cmd, '!') && bufs_modified(0, "e: buffer modified")) + return 1; + pls = ex_plus(&arg); + if (!pls || !(path = ex_pathexpand(arg, 0))) + return 1; + /* ew: switch buffer without changing # */ + if (path[0] && cmd[0] == 'e' && cmd[1] == 'w' && bufs_find(path) > 1) + bufs_switch(1); + /* check if the buffer is already available */ + if (path[0] && bufs_find(path) >= 0) { + bufs_switch(bufs_find(path)); + if (pls[0] == '+') + return ex_command(pls + 1); + return 0; + } + if (path[0] || !bufs[0].path) + bufs_switch(bufs_open(path)); + fd = open(ex_path(), O_RDONLY); + if (fd >= 0) { + int rd = lbuf_rd(xb, fd, 0, lbuf_len(xb)); + close(fd); + if (rd) + ex_show("e: read failed"); + else + ex_show("R%04d <%s", lbuf_len(xb), ex_path()); + } + lbuf_saved(xb, path[0] != '\0'); + bufs[0].mtime = mtime(ex_path()); + xrow = MAX(0, MIN(xrow, lbuf_len(xb) - 1)); + xoff = 0; + xtop = MAX(0, MIN(xtop, lbuf_len(xb) - 1)); + if (pls[0] == '+') + return ex_command(pls + 1); + return 0; +} + +static int ex_next(char *cmd, int dis) +{ + char sb_buf[EXLEN]; + struct sbuf sb = {sb_buf, sizeof(sb_buf)}; + int old = next_pos; + int idx = next != NULL && next[old] != NULL ? next_pos + dis : -1; + char *path = idx >= 0 && next[idx] != NULL ? next[idx] : NULL; + char *r = path != NULL ? path : ""; + if (dis && path == NULL) { + ex_show("n: no more files"); + return 1; + } + while (*r) { + if (*r == ' ' || *r == '%' || *r == '#' || *r == '=') + sbuf_chr(&sb, '\\'); + sbuf_chr(&sb, *r++); + } + if (!sbuf_buf(&sb) || ec_edit("", cmd, sbuf_buf(&sb), NULL)) + return 1; + next_pos = idx; + return 0; +} + +static int ec_next(char *loc, char *cmd, char *arg, char *txt) +{ + return ex_next(cmd, +1); +} + +static int ec_prev(char *loc, char *cmd, char *arg, char *txt) +{ + return ex_next(cmd, -1); +} + +static int ec_read(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end, pos; + char *path; + char *obuf; + int n = lbuf_len(xb); + path = arg[0] ? ex_pathexpand(arg, 1) : ex_path(); + if (ex_region(loc, &beg, &end) || path == NULL) + return 1; + pos = lbuf_len(xb) ? end : 0; + if (path[0] == '!') { + if (!path[1]) + return 1; + obuf = cmd_pipe(path + 1, NULL, 1); + if (obuf) + lbuf_edit(xb, obuf, pos, pos); + free(obuf); + } else { + int fd = open(path, O_RDONLY); + if (fd < 0) { + ex_show("r: open failed for %s", path); + return 1; + } + if (lbuf_rd(xb, fd, pos, pos)) { + ex_show("r: read failed for %s", path); + close(fd); + return 1; + } + close(fd); + } + xrow = end + lbuf_len(xb) - n - 1; + ex_show("R%04d <%s", lbuf_len(xb) - n, path); + return 0; +} + +static int ec_write(char *loc, char *cmd, char *arg, char *txt) +{ + char *path; + char *ibuf; + int beg, end; + path = arg[0] ? ex_pathexpand(arg, 1) : ex_path(); + if (cmd[0] == 'x' && !lbuf_modified(xb)) + return 0; + if (ex_region(loc, &beg, &end) || path == NULL) + return 1; + if (!loc[0]) { + beg = 0; + end = lbuf_len(xb); + } + if (path[0] == '!') { + if (!path[1]) + return 1; + ibuf = lbuf_cp(xb, beg, end); + ex_print(NULL); + cmd_pipe(path + 1, ibuf, 0); + free(ibuf); + } else { + long ts = !strcmp(ex_path(), path) ? bufs[0].mtime : 0; + char *err = lbuf_write(xb, beg, end, path, !!strchr(cmd, '!'), ts); + if (err != NULL) { + ex_show(err); + return 1; + } + } + ex_show("W%04d >%s", end - beg, path); + if (!ex_path()[0] && path[0] && path[0] != '!') { + free(bufs[0].path); + bufs[0].path = uc_dup(path); + reg_put('%', path, 0); + } + if (!strcmp(ex_path(), path)) { + lbuf_saved(xb, 0); + bufs[0].mtime = mtime(path); + } + lsp_modified(path, bufs[0].ft); + return 0; +} + +static int ec_quit(char *loc, char *cmd, char *arg, char *txt) +{ + int i; + if (cmd[0] == 'w' || cmd[0] == 'x') + if (ec_write("", cmd, arg, NULL)) + return 1; + for (i = 0; i < LEN(bufs); i++) { + if (bufs[i].lb) { + if (!strchr(cmd, 'a') && !strchr(cmd, '!')) { + if (bufs_modified(i, "q: buffer modified")) { + bufs_switch(i); + return 0; + } + } + if (strchr(cmd, 'a')) { + char *err = bufs_save(i, !!strchr(cmd, '!')); + if (err) { + bufs_switch(i); + ex_show(err); + return 0; + } + } + } + } + xquit = 1; + return 0; +} + +static int ec_insert(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + int n; + if (ex_region(loc, &beg, &end) && (beg != 0 || end != 0)) + return 1; + if (cmd[0] == 'a') + if (beg + 1 <= lbuf_len(xb)) + beg++; + if (cmd[0] != 'c') + end = beg; + n = lbuf_len(xb); + lbuf_edit(xb, txt, beg, end); + xrow = MIN(lbuf_len(xb) - 1, end + lbuf_len(xb) - n - 1); + return 0; +} + +static int ec_print(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + int i; + if (!cmd[0] && !loc[0]) + if (xrow >= lbuf_len(xb)) + return 1; + if (ex_region(loc, &beg, &end)) + return 1; + for (i = beg; i < end; i++) + ex_print(lbuf_get(xb, i)); + xrow = MAX(beg, end - 1); + xoff = 0; + return 0; +} + +static int ec_null(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + if (!xvis && !xsource) { + xrow = xrow + 1 < lbuf_len(xb) ? xrow + 1 : xrow; + return ec_print(loc, cmd, arg, txt); + } + if (ex_region(loc, &beg, &end)) + return 1; + xrow = MAX(beg, end - 1); + xoff = 0; + return 0; +} + +static void ex_yank(int reg, int beg, int end) +{ + char *buf = lbuf_cp(xb, beg, end); + reg_put(reg, buf, 1); + free(buf); +} + +static int ec_rs(char *loc, char *cmd, char *arg, char *txt) +{ + reg_put(REG(arg), txt, 1); + return 0; +} + +static int ec_delete(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + if (ex_region(loc, &beg, &end)) + return 1; + ex_yank(REG(arg), beg, end); + lbuf_edit(xb, NULL, beg, end); + xrow = beg; + return 0; +} + +static int ec_yank(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + if (ex_region(loc, &beg, &end)) + return 1; + ex_yank(REG(arg), beg, end); + return 0; +} + +static int ec_put(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + int lnmode; + char *buf; + int n = lbuf_len(xb); + buf = reg_get(REG(arg), &lnmode); + if (!buf || ex_region(loc, &beg, &end)) + return 1; + lbuf_edit(xb, buf, end, end); + xrow = MIN(lbuf_len(xb) - 1, end + lbuf_len(xb) - n - 1); + return 0; +} + +static int ec_lnum(char *loc, char *cmd, char *arg, char *txt) +{ + char msg[32]; + int beg, end; + if (ex_region(loc, &beg, &end)) + return 1; + sprintf(msg, "%d\n", end); + ex_print(msg); + return 0; +} + +static int ec_undo(char *loc, char *cmd, char *arg, char *txt) +{ + return lbuf_undo(xb); +} + +static int ec_redo(char *loc, char *cmd, char *arg, char *txt) +{ + return lbuf_redo(xb); +} + +static int ec_mark(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + if (ex_region(loc, &beg, &end)) + return 1; + lbuf_mark(xb, (unsigned char) arg[0], end - 1, 0); + return 0; +} + +static void replace(struct sbuf *dst, char *rep, char *ln, int *offs) +{ + while (rep[0]) { + if (rep[0] == '\\' && rep[1]) { + if (rep[1] >= '0' && rep[1] <= '9') { + int grp = (rep[1] - '0') * 2; + int len = offs[grp + 1] - offs[grp]; + sbuf_mem(dst, ln + offs[grp], len); + } else { + sbuf_chr(dst, (unsigned char) rep[1]); + } + rep++; + } else { + sbuf_chr(dst, (unsigned char) rep[0]); + } + rep++; + } +} + +static int ec_substitute(char *loc, char *cmd, char *arg, char *txt) +{ + struct rstr *re; + int offs[32]; + int beg, end; + char *pat = NULL, *rep = NULL; + char *s = arg; + int i; + if (ex_region(loc, &beg, &end)) + return 1; + pat = re_read(&s); + if (pat && pat[0]) + ex_kwdset(pat, +1); + if (pat && *s) { + s--; + rep = re_read(&s); + } + if (pat || rep) + snprintf(xrep, sizeof(xrep), "%s", rep ? rep : ""); + free(pat); + free(rep); + if (ex_kwd(&pat, NULL)) + return 1; + re = rstr_make(pat, xic ? RE_ICASE : 0); + if (!re) + return 1; + for (i = beg; i < end; i++) { + char *ln = lbuf_get(xb, i); + struct sbuf sb = {0}; + while (rstr_find(re, ln, LEN(offs) / 2, offs, 0) >= 0) { + sbuf_mem(&sb, ln, offs[0]); + replace(&sb, xrep, ln, offs); + ln += offs[1]; + if (offs[1] <= 0) /* zero-length match */ + sbuf_chr(&sb, (unsigned char) *ln++); + if (!*ln || *ln == '\n' || !strchr(s, 'g')) + break; + } + if (sb.s) { + sbuf_str(&sb, ln); + lbuf_edit(xb, sbuf_buf(&sb), i, i + 1); + sbuf_free(&sb); + } + } + rstr_free(re); + return 0; +} + +static int ec_exec(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + char *text; + char *rep; + char *ecmd; + if (!(ecmd = ex_pathexpand(arg, 1))) + return 1; + if (!loc[0]) { + if (bufs_modified(0, "!: buffer modified")) + return 1; + ex_print(NULL); + return cmd_exec(ecmd); + } + if (ex_region(loc, &beg, &end)) + return 1; + text = lbuf_cp(xb, beg, end); + rep = cmd_pipe(ecmd, text, 1); + if (rep) + lbuf_edit(xb, rep, beg, end); + free(text); + free(rep); + return 0; +} + +static int ec_rx(char *loc, char *cmd, char *arg, char *txt) +{ + char *rep, *ecmd, *dat; + int reg = 0; + arg = ex_reg(arg, ®); + if (reg <= 0) + return 1; + if (!(ecmd = ex_pathexpand(arg, 1))) + return 1; + dat = reg_get(reg, NULL); + rep = cmd_pipe(ecmd, dat ? dat : "", 1); + reg_put(reg, rep ? rep : "", 1); + free(rep); + return !rep; +} + +static int ec_rk(char *loc, char *cmd, char *arg, char *txt) +{ + char *rep, *path; + int reg = 0; + arg = ex_reg(arg, ®); + if (reg <= 0) + return 1; + if (!(path = ex_pathexpand(arg, 1))) + return 1; + rep = cmd_unix(path, reg_get(reg, NULL)); + reg_put(reg, rep ? rep : "", 1); + free(rep); + return !rep; +} + +static int ec_make(char *loc, char *cmd, char *arg, char *txt) +{ + char make[EXLEN]; + char *target, *res; + if (!strchr(cmd, '!') && bufs_modified(0, "mak: buffer modified")) + return 1; + if (!(target = ex_pathexpand(arg, 0))) + return 1; + if (snprintf(make, sizeof(make), "make %s", target) >= sizeof(make)) + return 1; + ex_print(NULL); + if (!(res = cmd_pipe(make, "", 2))) + return 1; + reg_put('*', res, 1); + qfix_reset(); + free(res); + return 0; +} + +static int ec_ft(char *loc, char *cmd, char *arg, char *txt) +{ + if (arg[0]) + snprintf(bufs[0].ft, sizeof(bufs[0].ft), "%s", arg); + else + ex_print(ex_filetype()); + return 0; +} + +static int ec_cmap(char *loc, char *cmd, char *arg, char *txt) +{ + if (!arg[0]) + ex_print(kmap_map(xkmap, 0)); + if (arg[0] && strchr(cmd, '!')) + xkmap_alt = kmap_find(arg); + if (arg[0] && kmap_find(arg) >= 0) + xkmap = kmap_find(arg); + return 0; +} + +static char *ex_skip(char **arg) +{ + char *s = *arg; + char *beg; + while (isspace((unsigned char) *s)) + s++; + if (!*s) + return NULL; + beg = s; + while (*s && !isspace((unsigned char) *s)) + if (*s++ == '' && s[0]) + s++; + *arg = *s ? s + 1 : s; + *s = '\0'; + return beg; +} + +static int ec_highlight(char *loc, char *cmd, char *arg, char *txt) +{ + char *name = ex_skip(&arg); + char *attr = ex_skip(&arg); + char *fg = ex_skip(&arg); + char *bg = ex_skip(&arg); + int mode = 0; + if (!name) + return 1; + if (strchr(attr, 'b')) + mode |= SYN_BD; + if (strchr(attr, 'i')) + mode |= SYN_IT; + if (strchr(attr, 'r')) + mode |= SYN_RV; + if (strchr(attr, 'h')) + mode |= SYN_HP; + if (strchr(attr, 'l')) + mode |= SYN_LP; + if (fg && isdigit((unsigned char) *fg)) + mode |= SYN_FGMK(atoi(fg)); + if (bg && isdigit((unsigned char) *bg)) + mode |= SYN_BGMK(atoi(bg)); + conf_hlset(conf_hlnum(name), mode); + return 0; +} + +static int ec_mapkey(char *loc, char *cmd, char *arg, char *txt) +{ + char *src = ex_skip(&arg); + char *dst = ex_skip(&arg); + if (!src) + return 1; + kmap_def(xkmap, (unsigned char) src[0], dst); + return 0; +} + +static int ec_mapchar(char *loc, char *cmd, char *arg, char *txt) +{ + char *src = ex_skip(&arg); + char *dst = ex_skip(&arg); + char *wid = ex_skip(&arg); + if (!src || !src[0]) + return 1; + if (src[0] == '' && src[1]) + src++; + if (dst && dst[0] == '' && dst[1]) + dst++; + mapch_def(src, dst ? dst : "", wid ? atoi(wid) : -1); + return 0; +} + +static int ex_exec(char *ln); + +static int ec_glob(char *loc, char *cmd, char *arg, char *txt) +{ + char sb_buf[EXLEN]; + struct rstr *re; + int offs[32]; + int beg, end, not; + char *req = sb_buf; + char *pat; + int i; + snprintf(sb_buf, sizeof(sb_buf), "%s", arg); + if (!loc[0] && !xgdep) + loc = "%"; + if (ex_region(loc, &beg, &end)) + return 1; + not = strchr(cmd, '!') || cmd[0] == 'v'; + pat = re_read(&req); + if (pat && pat[0]) + ex_kwdset(pat, +1); + free(pat); + if (ex_kwd(&pat, NULL)) + return 1; + if (!(re = rstr_make(pat, xic ? RE_ICASE : 0))) + return 1; + xgdep++; + for (i = beg + 1; i < end; i++) + lbuf_globset(xb, i, xgdep); + i = beg; + while (i < lbuf_len(xb)) { + char *ln = lbuf_get(xb, i); + if ((rstr_find(re, ln, LEN(offs) / 2, offs, 0) < 0) == not) { + xrow = i; + if (ex_exec(req)) + break; + i = MIN(i, xrow); + } + while (i < lbuf_len(xb) && !lbuf_globget(xb, i, xgdep)) + i++; + } + for (i = 0; i < lbuf_len(xb); i++) + lbuf_globget(xb, i, xgdep); + xgdep--; + rstr_free(re); + return 0; +} + +#define TAGCNT 32 +#define TAGLEN 128 +#define TAGLOC 256 + +static int tag_row[TAGCNT]; +static int tag_off[TAGCNT]; +static int tag_pos[TAGCNT]; +static char tag_path[TAGCNT][TAGLOC]; +static char tag_name[TAGCNT][TAGLEN]; +static int tag_cnt = 0; + +static void ex_tagput(char *name) +{ + if (tag_cnt < TAGCNT) { + tag_row[tag_cnt] = xrow; + tag_off[tag_cnt] = xoff; + snprintf(tag_path[tag_cnt], sizeof(tag_path[tag_cnt]), "%s", ex_path()); + snprintf(tag_name[tag_cnt], sizeof(tag_name[tag_cnt]), "%s", name); + tag_cnt++; + } +} + +/* go to definition (dir=+1 next, dir=-1 prev, dir=0 first) */ +static int tag_goto(char *cmd, char *cw, int dir) +{ + char path[TAGLOC], pcmd[TAGLEN]; + char *s, *ln; + int pos = dir == 0 || tag_cnt == 0 ? 0 : tag_pos[tag_cnt - 1]; + if (tag_find(cw, &pos, dir, path, sizeof(path), pcmd, sizeof(pcmd))) { + ex_show("ta: tag not found"); + return 1; + } + if (dir == 0) + ex_tagput(cw); + tag_pos[tag_cnt - 1] = pos; + if (strcmp(path, ex_path()) != 0) { + if (access(path, R_OK) != 0) { + ex_show("ta: cannot open %s", path); + return 1; + } + if (ec_edit("", cmd, path, NULL) != 0) + return 1; + } + xrow = 0; + xoff = 0; + ex_command(pcmd); + ln = lbuf_get(xb, xrow); + if (ln && (s = strstr(ln, cw)) != NULL) + xoff = s - ln; + return 0; +} + +static int ec_tag(char *loc, char *cmd, char *arg, char *txt) +{ + return tag_goto(cmd, arg, 0); +} + +static void cmd_args(char *src, char *args[], int sz) +{ + int i; + for (i = 0; i < sz - 1 && *src; i++) { + while (isspace((unsigned char) *src)) + src++; + args[i] = src; + for (; *src && !isspace((unsigned char) *src); src++) { + if (*src == '\\' && src[1]) + src++; + } + if (*src) + *src++ = '\0'; + } + args[i] = NULL; +} + +static int ec_lsp(char *loc, char *cmd, char *arg, char *txt) +{ + char *lcmd[16]; + cmd_args(arg && arg[0] ? arg : "clangd", lcmd, LEN(lcmd)); + if (!lsp_init(lcmd)) { + ex_show("LSP server connected"); + return 0; + } + ex_show("lsp: failed to connect to the LSP server"); + return 1; +} + +static int ec_lspclose(char *loc, char *cmd, char *arg, char *txt) +{ + ex_show("LSP server disconnected"); + lsp_done(); + return 0; +} + +static int ec_lspgoto(char *loc, char *cmd, char *arg, char *txt) +{ + char path[TAGLOC]; + int drow, doff; + if (!strchr(cmd, '!') && bufs_modified(0, "lspg: buffer modified")) + return 1; + if (!ex_path() || lsp_definition(ex_path(), xrow, xoff, ex_filetype(), + path, sizeof(path), &drow, &doff)) { + ex_show(lsp_on() ? "lspg: not found" : "lspg: not connected"); + return 1; + } + ex_tagput("lspgoto"); + if (strcmp(path, ex_path()) != 0) { + if (access(path, R_OK) != 0) { + ex_show("lspg: cannot open %s", path); + return 1; + } + if (ec_edit("", cmd, path, NULL) != 0) + return 1; + } + xrow = drow; + xoff = doff; + return 0; +} + +static int ec_lspfind(char *loc, char *cmd, char *arg, char *txt) +{ + char *res; + if (!strchr(cmd, '!') && bufs_modified(0, "lspf: buffer modified")) + return 1; + res = lsp_find(ex_path(), xrow, xoff, ex_filetype()); + if (res) { + reg_put('*', res, 1); + qfix_reset(); + } else { + ex_show(lsp_on() ? "lspf: not found" : "lspf: not connected"); + } + free(res); + return !res; +} + +static int ec_lspdoc(char *loc, char *cmd, char *arg, char *txt) +{ + char *res; + int reg = 0; + ex_reg(arg, ®); + if (reg <= 0) { + ex_show("lspd: no yank buffer specified"); + return 1; + } + if (!strchr(cmd, '!') && bufs_modified(0, "lspd: buffer modified")) + return 1; + res = lsp_hover(ex_path(), xrow, xoff, ex_filetype()); + if (res) + reg_put(reg, res, 1); + else + ex_show(lsp_on() ? "lspd: no documentation" : "lspd: not connected"); + free(res); + return !res; +} + +static int ec_tclose(char *loc, char *cmd, char *arg, char *txt) +{ + tag_done(); + tag_cnt = 0; + return 0; +} + +static int ec_pop(char *loc, char *cmd, char *arg, char *txt) +{ + if (tag_cnt > 0) { + if (!ex_path() || strcmp(tag_path[tag_cnt - 1], ex_path()) != 0) + if (ec_edit("", cmd, tag_path[tag_cnt - 1], txt)) + return 1; + tag_cnt--; + xrow = tag_row[tag_cnt]; + xoff = tag_off[tag_cnt]; + return 0; + } else { + ex_show("po: tag stack empty"); + } + return 1; +} + +static int ec_tput(char *loc, char *cmd, char *arg, char *txt) +{ + ex_tagput(arg[0] ? arg : "tagput"); + return 0; +} + +static int ec_tnext(char *loc, char *cmd, char *arg, char *txt) +{ + if (tag_cnt > 0 && !tag_goto(cmd, tag_name[tag_cnt - 1], +1)) + return 0; + ex_show("tn: no more tags"); + return 1; +} + +static int ec_tprev(char *loc, char *cmd, char *arg, char *txt) +{ + if (tag_cnt > 0 && !tag_goto(cmd, tag_name[tag_cnt - 1], -1)) + return 0; + ex_show("tp: no more tags"); + return 1; +} + +static int ex_cjump(char *cmd) +{ + char txt[128]; + char path[1024]; + int row, off; + if (qfix_current(path, sizeof(path), &row, &off, txt, sizeof(txt))) { + ex_show("cn: no more items"); + return 1; + } + if (access(path, R_OK)) { + ex_show("cn: cannot open %s", path); + return 1; + } + if (ec_edit("", cmd, path, NULL) != 0) + return 1; + if (row < 0 || row >= lbuf_len(xb)) + row = 0; + xrow = row; + xoff = off; + ex_show("cn: %s", txt); + return 0; +} + +static int ec_cshow(char *loc, char *cmd, char *arg, char *txt) +{ + int res; + if ((res = ex_cjump(cmd))) + ex_show("cc: no more items"); + return res; +} + +static int ec_cnext(char *loc, char *cmd, char *arg, char *txt) +{ + if (qfix_next()) { + ex_show("cn: no more items"); + return 1; + } + return ex_cjump(cmd); +} + +static int ec_cprev(char *loc, char *cmd, char *arg, char *txt) +{ + if (qfix_prev()) { + ex_show("cp: no more items"); + return 1; + } + return ex_cjump(cmd); +} + +static int ec_crewind(char *loc, char *cmd, char *arg, char *txt) +{ + qfix_reset(); + return 0; +} + +static int ec_at(char *loc, char *cmd, char *arg, char *txt) +{ + int beg, end; + int lnmode; + char *buf = reg_get(REG(arg), &lnmode); + if (!buf || ex_region(loc, &beg, &end)) + return 1; + xrow = beg; + if (cmd[0] == 'r' && cmd[1] == 'a') { + struct sbuf sb = {0}; + char *s = buf; + int ret; + while (*s) { + if ((unsigned char) *s == '' && s[1]) { + char *reg = reg_get((unsigned char) *++s, NULL); + sbuf_str(&sb, reg ? reg : ""); + s++; + } else { + if ((unsigned char) *s == '' && s[1]) + s++; + sbuf_chr(&sb, (unsigned char) *s++); + } + } + ret = ex_command(sbuf_buf(&sb)); + sbuf_free(&sb); + return ret; + } + return ex_command(buf); +} + +static int ec_source(char *loc, char *cmd, char *arg, char *txt) +{ + char *path = arg[0] ? ex_pathexpand(arg, 1) : ex_path(); + char buf[1 << 10]; + struct sbuf sb = {0}; + int fd = path[0] ? open(path, O_RDONLY) : -1; + long nr; + if (fd < 0) + return 1; + while ((nr = read(fd, buf, sizeof(buf))) > 0) + sbuf_mem(&sb, buf, nr); + xsource = 1; + ex_command(sbuf_buf(&sb)); + xsource = 0; + sbuf_free(&sb); + return 0; +} + +static int ec_echo(char *loc, char *cmd, char *arg, char *txt) +{ + ex_show(arg); + return 0; +} + +static struct option { + char *abbr; + char *name; + int *var; +} options[] = { + {"ai", "autoindent", &xai}, + {"aw", "autowrite", &xaw}, + {"hist", "history", &xhist}, + {"hl", "highlight", &xhl}, + {"hll", "highlightline", &xhll}, + {"ic", "ignorecase", &xic}, + {"lim", "linelimit", &xlim}, + {"order", "order", &xorder}, + {"ru", "ruler", &xru}, + {"shape", "shape", &xshape}, + {"td", "textdirection", &xtd}, + {"ts", "tabstop", &xts}, + {"vte", "vte", &xvte}, + {"wa", "writeany", &xwa}, +}; + +static char *cutword(char *s, char *d) +{ + while (isspace(*s)) + s++; + while (*s && !isspace(*s)) + *d++ = *s++; + while (isspace(*s)) + s++; + *d = '\0'; + return s; +} + +static int ec_set(char *loc, char *cmd, char *arg, char *txt) +{ + char tok[EXLEN]; + char *opt = tok; + char *s = arg; + int val = 0; + int i; + if (*s) { + s = cutword(s, tok); + if (tok[0] == 'n' && tok[1] == 'o') { + opt = tok + 2; + } else { + char *r = strchr(tok, '='); + val = 1; + if (r) { + *r = '\0'; + val = atoi(r + 1); + } + } + for (i = 0; i < LEN(options); i++) { + struct option *o = &options[i]; + if (!strcmp(o->abbr, opt) || !strcmp(o->name, opt)) { + *o->var = val; + return 0; + } + } + ex_show("unknown option %s", opt); + return 1; + } + return 0; +} + +static struct excmd { + char *abbr; + char *name; + int (*ec)(char *loc, char *cmd, char *arg, char *txt); + int exclam; +} excmds[] = { + {"a", "append", ec_insert}, + {"b", "buffer", ec_buffer}, + {"d", "delete", ec_delete}, + {"c", "change", ec_insert}, + {"cc", "cc", ec_cshow, 1}, + {"cm", "cmap", ec_cmap, 1}, + {"cn", "cnext", ec_cnext, 1}, + {"cp", "cprev", ec_cprev, 1}, + {"cr", "crewind", ec_crewind}, + {"e", "edit", ec_edit, 1}, + {"ec", "echo", ec_echo}, + {"ew", "ew", ec_edit, 1}, + {"ft", "filetype", ec_ft}, + {"g", "global", ec_glob, 1}, + {"hl", "highlight", ec_highlight}, + {"i", "insert", ec_insert}, + {"k", "mark", ec_mark}, + {"lsp", "lspopen", ec_lsp}, + {"lspc", "lspclose", ec_lspclose}, + {"lspf", "lspfind", ec_lspfind, 1}, + {"lspg", "lspgoto", ec_lspgoto, 1}, + {"lspd", "lspdoc", ec_lspdoc, 1}, + {"mak", "make", ec_make, 1}, + {"mk", "mapkey", ec_mapkey}, + {"n", "next", ec_next, 1}, + {"p", "print", ec_print}, + {"mc", "mapchar", ec_mapchar}, + {"po", "pop", ec_pop, 1}, + {"pu", "put", ec_put}, + {"prev", "prev", ec_prev, 1}, + {"q", "quit", ec_quit, 1}, + {"r", "read", ec_read}, + {"redo", "redo", ec_redo}, + {"rs", "rs", ec_rs}, + {"rx", "rx", ec_rx}, + {"ra", "ra", ec_at}, + {"rk", "rk", ec_rk}, + {"se", "set", ec_set}, + {"s", "substitute", ec_substitute}, + {"so", "source", ec_source}, + {"ta", "tag", ec_tag, 1}, + {"tn", "tnext", ec_tnext, 1}, + {"tp", "tprev", ec_tprev, 1}, + {"tc", "tclose", ec_tclose}, + {"tt", "tput", ec_tput}, + {"u", "undo", ec_undo}, + {"v", "vglobal", ec_glob}, + {"w", "write", ec_write, 1}, + {"wq", "wq", ec_quit, 1}, + {"x", "xit", ec_quit, 1}, + {"xa", "xa", ec_quit, 1}, + {"y", "yank", ec_yank}, + {"!", "!", ec_exec}, + {"@", "@", ec_at}, + {"=", "=", ec_lnum}, + {"", "", ec_null}, +}; + +static int ex_idx(char *cmd) +{ + char base[32]; + int len, i; + snprintf(base, sizeof(base), "%s", cmd); + if ((len = strlen(base)) > 1 && base[len - 1] == '!') + base[len - 1] = '\0'; + for (i = 0; i < LEN(excmds); i++) + if (!strcmp(excmds[i].abbr, base) || !strcmp(excmds[i].name, base)) + return i; + return -1; +} + +/* read ex command addresses; return a static buffer */ +static char *ex_loc(char **src0) +{ + char *src = *src0; + static char sb_buf[EXLEN]; + struct sbuf sb = {sb_buf, sizeof(sb_buf)}; + while (*src == ':' || *src == ' ' || *src == '\t') + src++; + while (*src && strchr(".$0123456789'/?+-,;%", (unsigned char) *src) != NULL) { + if (*src == '\'') + sbuf_chr(&sb, *src++); + if (*src == '/' || *src == '?') { + int d = *src; + sbuf_chr(&sb, *src++); + while (*src && *src != d) { + if (*src == '\\' && src[1]) + sbuf_chr(&sb, *src++); + sbuf_chr(&sb, *src++); + } + } + if (*src) + sbuf_chr(&sb, *src++); + } + *src0 = src; + return sbuf_buf(&sb); +} + +/* read ex command name; returns a static buffer */ +static char *ex_cmd(char **src0) +{ + char *src = *src0; + static char sb_buf[32]; + struct sbuf sb = {sb_buf, sizeof(sb_buf)}; + while (*src == ' ' || *src == '\t') + src++; + while (isalpha((unsigned char) *src)) { + sbuf_chr(&sb, *src++); + if (src[-1] == 'k' && sbuf_len(&sb) == 1) + break; + } + if (*src == '!' || *src == '=' || *src == '@') + sbuf_chr(&sb, *src++); + *src0 = src; + return sbuf_buf(&sb); +} + +/* read ex command argument for excmd command; returns a static buffer */ +static char *ex_arg(char **src0, char *excmd) +{ + static char sb_buf[EXLEN]; + struct sbuf sb = {sb_buf, sizeof(sb_buf)}; + int c0 = excmd[0]; + int c1 = c0 ? excmd[1] : 0; + char *src = *src0; + while (*src == ' ' || *src == '\t') + src++; + if (c0 == '!' || c0 == 'g' || c0 == 'v' || + ((c0 == 'r' || c0 == 'w') && !c1 && src[0] == '!')) { + while (*src && *src != '\n') { + if (*src == '\\' && src[1]) + sbuf_chr(&sb, *src++); + sbuf_chr(&sb, *src++); + } + } else if ((c0 == 's' && c1 != 'e') || c0 == '&' || c0 == '~') { + int delim = *src; + int cnt = 2; + if (delim != '\n' && delim != '|' && delim != '\\' && delim != '"') { + sbuf_chr(&sb, *src++); + while (*src && *src != '\n' && cnt > 0) { + if (*src == delim) + cnt--; + if (*src == '\\' && src[1]) + sbuf_chr(&sb, *src++); + sbuf_chr(&sb, *src++); + } + } + } + while (*src && *src != '\n' && *src != '|' && *src != '"') { + if (*src == '\\' && src[1]) + sbuf_chr(&sb, *src++); + sbuf_chr(&sb, *src++); + } + if (*src == '"') { + while (*src && *src != '\n') + src++; + } + if (*src == '\n' || *src == '|') + src++; + *src0 = src; + return sbuf_buf(&sb); +} + +/* read ex text input for excmd command */ +static char *ex_txt(char **src0, char *excmd) +{ + char *src = *src0; + int c0 = excmd[0]; + int c1 = c0 ? excmd[1] : 0; + if (c0 == 'r' && c1 == 's' && src[0]) { + char *beg = src; + char *res; + while (src[0] && (src[0] != '\n' || src[1] != '.' || src[2] != '\n')) + src++; + res = malloc((src - beg) + 1 + 1); + memcpy(res, beg, src - beg); + res[src - beg] = '\n'; + res[src - beg + 1] = '\0'; + *src0 = src[0] ? src + 3 : src; + return res; + } + if ((c0 == 'r' && c1 == 's') || (c1 == 0 && (c0 == 'i' || c0 == 'a' || c0 == 'c'))) { + struct sbuf sb = {0}; + char *s; + while ((s = ex_read(""))) { + if (!strcmp(".", s)) { + free(s); + break; + } + sbuf_str(&sb, s); + sbuf_chr(&sb, '\n'); + free(s); + } + *src0 = src; + return sbuf_done(&sb); + } + return NULL; +} + +/* execute a single ex command */ +static int ex_exec(char *ln) +{ + int ret = 0; + while (!ret) { + char *loc, *cmd, *arg, *txt; + int idx; + loc = ex_loc(&ln); + cmd = ex_cmd(&ln); + idx = cmd ? ex_idx(cmd) : -1; + arg = ex_arg(&ln, idx >= 0 ? excmds[idx].abbr : "unknown"); + txt = ex_txt(&ln, idx >= 0 ? excmds[idx].abbr : "unknown"); + if (idx >= 0 && arg) { + ret = excmds[idx].ec(loc, cmd, arg, txt); + } else { + ret = 1; + ex_show("unknown command %s", cmd); + } + free(txt); + if (!*ln) + break; + } + return ret; +} + +/* execute ex commands */ +int ex_command(char *ln) +{ + int ret = ex_exec(ln); + lbuf_tx(xb); + return ret; +} + +/* ex main loop */ +void ex(void) +{ + while (!xquit) { + char *ln = ex_read(":"); + if (!ln) + break; + ex_command(ln); + reg_put(':', ln, 1); + free(ln); + } +} + +int ex_init(char **files) +{ + next = files; + if (ex_next("e", 0)) + return 1; + if (getenv("EXINIT")) { + ex_command(getenv("EXINIT")); + } else if (getenv("HOME")) { + char sb_buf[EXLEN]; + struct sbuf sb = {sb_buf, sizeof(sb_buf)}; + sbuf_str(&sb, getenv("HOME")); + sbuf_str(&sb, "/.neatvi"); + if (sbuf_buf(&sb) && !access(sbuf_buf(&sb), R_OK)) + ec_source("", "so", sbuf_buf(&sb), NULL); + } + return 0; +} + +void ex_done(void) +{ + int i; + lsp_done(); + for (i = 0; i < LEN(bufs); i++) + bufs_free(i); +} diff --git a/Apps/Neatvi/main/Source/kmap.h b/Apps/Neatvi/main/Source/kmap.h new file mode 100644 index 0000000..f0dce9a --- /dev/null +++ b/Apps/Neatvi/main/Source/kmap.h @@ -0,0 +1,453 @@ +static char *kmap_en[256] = { + [0] = "en", +}; + +static char *kmap_fa[256] = { + [0] = "fa", + ['`'] = "‍", + ['1'] = "۱", + ['2'] = "۲", + ['3'] = "۳", + ['4'] = "۴", + ['5'] = "۵", + ['6'] = "۶", + ['7'] = "۷", + ['8'] = "۸", + ['9'] = "۹", + ['0'] = "۰", + ['-'] = "-", + ['='] = "=", + ['q'] = "ض", + ['w'] = "ص", + ['e'] = "ث", + ['r'] = "ق", + ['t'] = "ف", + ['y'] = "غ", + ['u'] = "ع", + ['i'] = "ه", + ['o'] = "خ", + ['p'] = "ح", + ['['] = "ج", + [']'] = "چ", + ['a'] = "ش", + ['s'] = "س", + ['d'] = "ی", + ['f'] = "ب", + ['g'] = "ل", + ['h'] = "ا", + ['j'] = "ت", + ['k'] = "ن", + ['l'] = "م", + [';'] = "ک", + ['\''] = "گ", + ['z'] = "ظ", + ['x'] = "ط", + ['c'] = "ز", + ['v'] = "ر", + ['b'] = "ذ", + ['n'] = "د", + ['m'] = "پ", + [','] = "و", + ['.'] = ".", + ['/'] = "/", + ['\\'] = "\\", + ['~'] = "÷", + ['!'] = "!", + ['@'] = "٬", + ['#'] = "٫", + ['$'] = "﷼", + ['%'] = "٪", + ['^'] = "×", + ['&'] = "،", + ['*'] = "*", + ['('] = "(", + [')'] = ")", + ['_'] = "ـ", + ['+'] = "+", + ['Q'] = "ْ", + ['W'] = "ٌ", + ['E'] = "ٍ", + ['R'] = "ً", + ['T'] = "ُ", + ['Y'] = "ِ", + ['U'] = "َ", + ['I'] = "ّ", + ['O'] = "[", + ['P'] = "]", + ['{'] = "{", + ['}'] = "}", + ['A'] = "ؤ", + ['S'] = "ئ", + ['D'] = "ي", + ['F'] = "إ", + ['G'] = "أ", + ['H'] = "آ", + ['J'] = "ة", + ['K'] = "«", + ['L'] = "»", + [':'] = ":", + ['"'] = "؛", + ['Z'] = "ك", + ['X'] = "ٓ", + ['C'] = "ژ", + ['V'] = "ٰ", + ['B'] = "‌", + ['N'] = "ٔ", + ['M'] = "ء", + ['<'] = "<", + ['>'] = ">", + ['?'] = "؟", + ['|'] = "|", +}; + +static char *kmap_xy[256]; + +static char **kmaps[] = {kmap_en, kmap_fa, kmap_xy}; + +static char *digraphs[][2] = { + {"cq", "’"}, + {"pl", "+"}, + {"hy", "-"}, + {"sl", "/"}, + {"eq", "="}, + {"dq", "\""}, + {"rs", "\\"}, + {"ru", "_"}, + {"ul", "_"}, + {"oq", "‘"}, + {"or", "|"}, + {"!!", "¡"}, + {"r!", "¡"}, + {"c|", "¢"}, + {"ct", "¢"}, + {"L-", "£"}, + {"ps", "£"}, + {"xo", "¤"}, + {"cr", "¤"}, + {"Y-", "¥"}, + {"yn", "¥"}, + {"||", "¦"}, + {"so", "§"}, + {"sc", "§"}, + {"co", "©"}, + {"a_", "ª"}, + {"<<", "«"}, + {"Fo", "«"}, + {"-,", "¬"}, + {"no", "¬"}, + {"ro", "®"}, + {"rg", "®"}, + {"0^", "°"}, + {"de", "°"}, + {"+-", "±"}, + {"2^", "²"}, + {"3^", "³"}, + {"P!", "¶"}, + {"pg", "¶"}, + {".^", "·"}, + {"1^", "¹"}, + {"o_", "º"}, + {">>", "»"}, + {"Fc", "»"}, + {"14", "¼"}, + {"12", "½"}, + {"34", "¾"}, + {"??", "¿"}, + {"r?", "¿"}, + {"A`", "À"}, + {"A'", "Á"}, + {"A^", "Â"}, + {"A~", "Ã"}, + {"A-", "Ā"}, + {"A:", "Ä"}, + {"A\"", "A:"}, + {"A*", "Å"}, + {"AE", "Æ"}, + {"C,", "Ç"}, + {"E`", "È"}, + {"E'", "É"}, + {"E^", "Ê"}, + {"E-", "Ē"}, + {"E:", "Ë"}, + {"I`", "Ì"}, + {"I'", "Í"}, + {"I^", "Î"}, + {"I-", "Ī"}, + {"I:", "Ï"}, + {"D-", "Ð"}, + {"N~", "Ñ"}, + {"O`", "Ò"}, + {"O'", "Ó"}, + {"O^", "Ô"}, + {"O~", "Õ"}, + {"O-", "Ō"}, + {"O:", "Ö"}, + {"xx", "×"}, + {"mu", "×"}, + {"O/", "Ø"}, + {"U`", "Ù"}, + {"U'", "Ú"}, + {"U^", "Û"}, + {"U-", "Ū"}, + {"U:", "Ü"}, + {"Y'", "Ý"}, + {"TH", "Þ"}, + {"ss", "ß"}, + {"a`", "à"}, + {"a'", "á"}, + {"a^", "â"}, + {"a-", "ā"}, + {"a~", "ã"}, + {"a:", "ä"}, + {"a*", "å"}, + {"ae", "æ"}, + {"c,", "ç"}, + {"e`", "è"}, + {"e'", "é"}, + {"e^", "ê"}, + {"e:", "ë"}, + {"e-", "ē"}, + {"i`", "ì"}, + {"i'", "í"}, + {"i^", "î"}, + {"i-", "ī"}, + {"i:", "ï"}, + {"d-", "ð"}, + {"n~", "ñ"}, + {"o`", "ò"}, + {"o'", "ó"}, + {"o^", "ô"}, + {"o~", "õ"}, + {"o-", "ō"}, + {"o:", "ö"}, + {"di", "÷"}, + {"-:", "÷"}, + {"o/", "ø"}, + {"u`", "ù"}, + {"u'", "ú"}, + {"u^", "û"}, + {"u-", "ū"}, + {"u:", "ü"}, + {"y'", "ý"}, + {"y-", "ȳ"}, + {"th", "þ"}, + {"y:", "ÿ"}, + {"C<", "Č"}, + {"c<", "č"}, + {"D<", "Ď"}, + {"d<", "ď"}, + {"e<", "ě"}, + {"n<", "ň"}, + {"O\"", "Ő"}, + {"o\"", "ő"}, + {"R<", "Ř"}, + {"r<", "ř"}, + {"S<", "Š"}, + {"s<", "š"}, + {"T<", "Ť"}, + {"t<", "ť"}, + {"U*", "Ů"}, + {"u*", "ů"}, + {"U\"", "Ű"}, + {"u\"", "ű"}, + {"Y:", "Ÿ"}, + {"Y-", "Ȳ"}, + {"Z<", "Ž"}, + {"z<", "ž"}, + {"fn", "ƒ"}, + {",,", "¸"}, + {",a", "¸"}, + {"aa", "´"}, + {"\\'", "´"}, + {"-a", "¯"}, + {"\"\"", "¨"}, + {":a", "¨"}, + {"^", "ˆ"}, + {"^a", "ˆ"}, + {"va", "ˇ"}, + {"Ua", "˘"}, + {".a", "˙"}, + {"oa", "˚"}, + {"Ca", "˛"}, + {"\"a", "˝"}, + {"~", "˜"}, + {"*A", "Α"}, + {"*B", "Β"}, + {"*G", "Γ"}, + {"*E", "Ε"}, + {"*Z", "Ζ"}, + {"*Y", "Η"}, + {"*H", "Θ"}, + {"*I", "Ι"}, + {"*K", "Κ"}, + {"*L", "Λ"}, + {"*M", "Μ"}, + {"*N", "Ν"}, + {"*C", "Ξ"}, + {"*O", "Ο"}, + {"*P", "Π"}, + {"*R", "Ρ"}, + {"*S", "Σ"}, + {"*T", "Τ"}, + {"*U", "Υ"}, + {"*F", "Φ"}, + {"*X", "Χ"}, + {"*Q", "Ψ"}, + {"*W", "Ω"}, + {"*a", "α"}, + {"*b", "β"}, + {"*g", "γ"}, + {"*d", "δ"}, + {"*e", "ε"}, + {"*z", "ζ"}, + {"*y", "η"}, + {"*h", "θ"}, + {"*i", "ι"}, + {"*k", "κ"}, + {"*l", "λ"}, + {"*m", "μ"}, + {"/u", "µ"}, + {"*n", "ν"}, + {"*c", "ξ"}, + {"*o", "ο"}, + {"*p", "π"}, + {"*r", "ρ"}, + {"ts", "ς"}, + {"*s", "σ"}, + {"*t", "τ"}, + {"*u", "υ"}, + {"*f", "φ"}, + {"*x", "χ"}, + {"*q", "ψ"}, + {"*w", "ω"}, + {"en", "–"}, + {"\\-", "–"}, + {"em", "—"}, + {"--", "—"}, + {"bq", "‚"}, + {"``", "“"}, + {"lq", "“"}, + {"''", "”"}, + {"rq", "”"}, + {"dg", "†"}, + {"dd", "‡"}, + {"bu", "•"}, + {"el", "…"}, + {"%0", "‰"}, + {"fm", "′"}, + {"fo", "‹"}, + {"fc", "›"}, + {"fr", "⁄"}, + {"If", "ℑ"}, + {"ws", "℘"}, + {"Rf", "ℜ"}, + {"af", "ℵ"}, + {"<-", "←"}, + {"ua", "↑"}, + {"->", "→"}, + {"da", "↓"}, + {"<>", "↔"}, + {"ab", "↔"}, + {"CR", "↵"}, + {"fa", "∀"}, + {"pd", "∂"}, + {"te", "∃"}, + {"es", "∅"}, + {"*D", "Δ"}, + {"gr", "∇"}, + {"mo", "∈"}, + {"!m", "∉"}, + {"st", "∋"}, + {"pr", "∏"}, + {"su", "∑"}, + {"mi", "−"}, + {"-+", "∓"}, + {"**", "∗"}, + {"sr", "√"}, + {"pt", "∝"}, + {"if", "∞"}, + {"an", "∠"}, + {"l&", "∧"}, + {"l|", "∨"}, + {"ca", "∩"}, + {"cu", "∪"}, + {"is", "∫"}, + {"tf", "∴"}, + {"ap", "∼"}, + {"cg", "≅"}, + {"=~", "≅"}, + {"~~", "≈"}, + {"!=", "≠"}, + {"==", "≡"}, + {"<=", "≤"}, + {">=", "≥"}, + {"sb", "⊂"}, + {"sp", "⊃"}, + {"!b", "⊄"}, + {"ib", "⊆"}, + {"ip", "⊇"}, + {"O+", "⊕"}, + {"Ox", "⊗"}, + {"pp", "⊥"}, + {"c.", "⋅"}, + {"b<", "〈"}, + {"b>", "〉"}, + {"lz", "◊"}, + {"ci", "○"}, + {"la", "⟨"}, + {"ra", "⟩"}, + {"co", ""}, + {"rg", ""}, + {"tm", ""}, + {"rn", ""}, + {"av", ""}, + {"ah", ""}, + {"RG", ""}, + {"CO", ""}, + {"TM", ""}, + {"LT", ""}, + {"br", ""}, + {"LX", ""}, + {"LB", ""}, + {"LT", "⎛"}, + {"LX", "⎜"}, + {"LB", "⎝"}, + {"lc", ""}, + {"lx", ""}, + {"lf", ""}, + {"lc", "⎡"}, + {"lx", "⎢"}, + {"lf", "⎣"}, + {"lt", ""}, + {"lk", ""}, + {"lb", ""}, + {"lt", "⎧"}, + {"lk", "⎨"}, + {"lb", "⎩"}, + {"bv", "⎪"}, + {"RT", ""}, + {"RX", ""}, + {"RB", ""}, + {"RT", "⎞"}, + {"RX", "⎟"}, + {"RB", "⎠"}, + {"rc", ""}, + {"rx", ""}, + {"rf", ""}, + {"rc", "⎤"}, + {"rx", "⎥"}, + {"rf", "⎦"}, + {"rt", ""}, + {"rk", ""}, + {"rb", ""}, + {"rt", "⎫"}, + {"rk", "⎬"}, + {"rb", "⎭"}, + {"ff", "ff"}, + {"fi", "fi"}, + {"fl", "fl"}, + {"ffi", "ffi"}, + {"Fi", "ffi"}, + {"ffl", "ffl"}, + {"Fl", "ffl"}, +}; diff --git a/Apps/Neatvi/main/Source/lbuf.c b/Apps/Neatvi/main/Source/lbuf.c new file mode 100644 index 0000000..79d08a7 --- /dev/null +++ b/Apps/Neatvi/main/Source/lbuf.c @@ -0,0 +1,439 @@ +#include +#include +#include +#include +#include +#include +#include "vi.h" + +#define NMARKS_BASE ('z' - 'a' + 3) +#define NMARKS 32 + +/* line operations */ +struct lopt { + char *ins, *del; /* inserted/deleted text */ + long ins_len, del_len; /* number of bytes in ins/del */ + int pos, n_ins, n_del; /* modification location */ + int pos_off; /* cursor line offset */ + int seq; /* operation number */ + int *mark, *mark_off; /* saved marks */ +}; + +/* line buffers */ +struct lbuf { + int mark[NMARKS]; /* mark lines */ + int mark_off[NMARKS]; /* mark line offsets */ + char **ln; /* buffer lines */ + long *ln_len; /* buffer lines */ + char *ln_glob; /* line global mark */ + int ln_n; /* number of lines in ln[] */ + int ln_sz; /* size of ln[] */ + int useq; /* current operation sequence */ + struct lopt *hist; /* buffer history */ + int hist_sz; /* size of hist[] */ + int hist_n; /* current history head in hist[] */ + int hist_u; /* current undo head in hist[] */ + int useq_zero; /* useq for lbuf_saved() */ + int useq_last; /* useq before hist[] */ +}; + +struct lbuf *lbuf_make(void) +{ + struct lbuf *lb = malloc(sizeof(*lb)); + int i; + memset(lb, 0, sizeof(*lb)); + for (i = 0; i < LEN(lb->mark); i++) + lb->mark[i] = -1; + lb->useq = 1; + return lb; +} + +static void lopt_done(struct lopt *lo) +{ + free(lo->ins); + free(lo->del); + free(lo->mark); + free(lo->mark_off); +} + +static void lbuf_savemark(struct lbuf *lb, struct lopt *lo, int m) +{ + if (lb->mark[m] >= 0) { + if (!lo->mark) { + lo->mark = malloc(sizeof(lb->mark)); + lo->mark_off = malloc(sizeof(lb->mark_off)); + memset(lo->mark, 0xff, sizeof(lb->mark)); + } + lo->mark[m] = lb->mark[m]; + lo->mark_off[m] = lb->mark_off[m]; + } +} + +static void lbuf_loadmark(struct lbuf *lb, struct lopt *lo, int m) +{ + if (lo->mark && lo->mark[m] >= 0) { + lb->mark[m] = lo->mark[m]; + lb->mark_off[m] = lo->mark_off[m]; + } +} + +static int markidx(int mark) +{ + if (islower(mark)) + return mark - 'a'; + if (mark == '\'' || mark == '`') + return 'z' - 'a' + 1; + if (mark == '*') + return 'z' - 'a' + 2; + if (mark == '[') + return 'z' - 'a' + 3; + if (mark == ']') + return 'z' - 'a' + 4; + if (mark == '^') + return 'z' - 'a' + 5; + return -1; +} + +static void lbuf_markcopy(struct lbuf *lb, int dst, int src) +{ + lb->mark[markidx(dst)] = lb->mark[markidx(src)]; + lb->mark_off[markidx(dst)] = lb->mark_off[markidx(src)]; +} + +static void lbuf_savepos(struct lbuf *lb, struct lopt *lo) +{ + if (lb->mark[markidx('^')] >= 0) + lo->pos_off = lb->mark_off[markidx('^')]; + lbuf_markcopy(lb, '*', '^'); +} + +static void lbuf_loadpos(struct lbuf *lb, struct lopt *lo) +{ + lb->mark[markidx('^')] = lo->pos; + lb->mark_off[markidx('^')] = lo->pos_off; + lbuf_markcopy(lb, '*', '^'); +} + +void lbuf_free(struct lbuf *lb) +{ + int i; + for (i = 0; i < lb->ln_n; i++) + free(lb->ln[i]); + for (i = 0; i < lb->hist_n; i++) + lopt_done(&lb->hist[i]); + free(lb->hist); + free(lb->ln); + free(lb->ln_len); + free(lb->ln_glob); + free(lb); +} + +static long linelength(char *s, long slen) +{ + char *r = memchr(s, '\n', slen); + return r ? r - s + 1 : slen; +} + +static int linecount(char *s, long slen) +{ + char *e = s + slen; + int n; + for (n = 0; s && s < e; n++) + s += linelength(s, e - s); + return n; +} + +/* low-level line replacement */ +static void lbuf_replace(struct lbuf *lb, char *s, long slen, int pos, int n_del) +{ + int n_ins = linecount(s, slen); + char *e = s + slen; + int i; + while (lb->ln_n + n_ins - n_del >= lb->ln_sz) { + int nsz = lb->ln_sz + (lb->ln_sz ? lb->ln_sz : 512); + char **nln = malloc(nsz * sizeof(nln[0])); + long *nln_len = malloc(nsz * sizeof(nln_len[0])); + char *nln_glob = malloc(nsz * sizeof(nln_glob[0])); + memcpy(nln, lb->ln, lb->ln_n * sizeof(lb->ln[0])); + memcpy(nln_len, lb->ln_len, lb->ln_n * sizeof(lb->ln_len[0])); + memcpy(nln_glob, lb->ln_glob, lb->ln_n * sizeof(lb->ln_glob[0])); + free(lb->ln); + free(lb->ln_len); + free(lb->ln_glob); + lb->ln = nln; + lb->ln_len = nln_len; + lb->ln_glob = nln_glob; + lb->ln_sz = nsz; + } + for (i = 0; i < n_del; i++) + free(lb->ln[pos + i]); + if (n_ins != n_del) { + memmove(lb->ln + pos + n_ins, lb->ln + pos + n_del, + (lb->ln_n - pos - n_del) * sizeof(lb->ln[0])); + memmove(lb->ln_len + pos + n_ins, lb->ln_len + pos + n_del, + (lb->ln_n - pos - n_del) * sizeof(lb->ln_len[0])); + memmove(lb->ln_glob + pos + n_ins, lb->ln_glob + pos + n_del, + (lb->ln_n - pos - n_del) * sizeof(lb->ln_glob[0])); + } + lb->ln_n += n_ins - n_del; + for (i = 0; i < n_ins; i++) { + long l = s ? linelength(s, e - s) : 0; + long l_nonl = l - (l > 0 && s[l - 1] == '\n'); + char *n = malloc(l_nonl + 2); + memcpy(n, s, l_nonl); + n[l_nonl + 0] = '\n'; + n[l_nonl + 1] = '\0'; + lb->ln[pos + i] = n; + lb->ln_len[pos + i] = l; + s += l; + } + for (i = n_del; i < n_ins; i++) + lb->ln_glob[pos + i] = 0; + for (i = 0; i < LEN(lb->mark); i++) { /* updating marks */ + if (!s && lb->mark[i] >= pos && lb->mark[i] < pos + n_del) + lb->mark[i] = -1; + else if (lb->mark[i] >= pos + n_del) + lb->mark[i] += n_ins - n_del; + else if (lb->mark[i] >= pos + n_ins) + lb->mark[i] = pos + n_ins - 1; + } + lbuf_mark(lb, '[', pos, 0); + lbuf_mark(lb, ']', pos + (n_ins ? n_ins - 1 : 0), 0); +} + +static char *lbuf_copy(struct lbuf *lb, int beg, int end, long *len) +{ + struct sbuf sb = {0}; + int i; + for (i = beg; i < end; i++) + if (i < lb->ln_n) + sbuf_mem(&sb, lb->ln[i], lb->ln_len[i]); + if (len) + *len = sbuf_len(&sb); + return sbuf_done(&sb); +} + +/* append undo/redo history */ +static void lbuf_opt(struct lbuf *lb, char *s, long slen, int pos, int n_del) +{ + struct lopt *lo; + int i; + for (i = lb->hist_u; i < lb->hist_n; i++) + lopt_done(&lb->hist[i]); + lb->hist_n = lb->hist_u; + lo = &lb->hist[lb->hist_n - 1]; + /* merging changes to the same line */ + if (lb->hist_n > 0 && lo->seq == lb->useq && lo->pos == pos) { + if (lo->n_ins == 1 && n_del == 1 && linecount(s, slen) == 1) { + free(lo->ins); + lo->ins = s ? malloc(slen) : NULL; + if (lo->ins) + memcpy(lo->ins, s, slen); + lo->ins_len = slen; + lb->hist_u = lb->hist_n; + lbuf_savepos(lb, lo); + return; + } + } + if (lb->hist_n == lb->hist_sz) { + int sz = lb->hist_sz + (lb->hist_sz ? lb->hist_sz : 128); + struct lopt *hist = malloc(sz * sizeof(hist[0])); + memcpy(hist, lb->hist, lb->hist_n * sizeof(hist[0])); + free(lb->hist); + lb->hist = hist; + lb->hist_sz = sz; + } + lo = &lb->hist[lb->hist_n]; + lb->hist_n++; + lb->hist_u = lb->hist_n; + memset(lo, 0, sizeof(*lo)); + lo->pos = pos; + lo->n_del = n_del; + lo->del_len = 0; + lo->del = n_del ? lbuf_copy(lb, pos, pos + n_del, &lo->del_len) : NULL; + lo->n_ins = s ? linecount(s, slen) : 0; + lo->ins = s ? uc_dup(s) : NULL; + lo->ins_len = slen; + lo->seq = lb->useq; + lbuf_savepos(lb, lo); + for (i = 0; i < NMARKS_BASE; i++) + if (lb->mark[i] >= pos && lb->mark[i] < pos + n_del) + lbuf_savemark(lb, lo, i); +} + +static void lbuf_editraw(struct lbuf *lb, char *s, long slen, int beg, int end) +{ + if (beg > lb->ln_n) + beg = lb->ln_n; + if (end > lb->ln_n) + end = lb->ln_n; + if (beg == end && !s) + return; + lbuf_opt(lb, s, slen, beg, end - beg); + lbuf_replace(lb, s, slen, beg, end - beg); +} + +/* replace lines beg through end with s */ +void lbuf_edit(struct lbuf *lb, char *s, int beg, int end) +{ + lbuf_editraw(lb, s, s ? strlen(s) : 0, beg, end); +} + +int lbuf_rd(struct lbuf *lbuf, int fd, int beg, int end) +{ + char buf[1 << 10]; + struct sbuf sb = {0}; + long nr; + while ((nr = read(fd, buf, sizeof(buf))) > 0) + sbuf_mem(&sb, buf, nr); + if (!nr) + lbuf_editraw(lbuf, sbuf_buf(&sb), sbuf_len(&sb), beg, end); + sbuf_free(&sb); + return nr != 0; +} + +static long write_fully(int fd, void *buf, long sz) +{ + long nw = 0, nc = 0; + while (nw < sz && ((nc = write(fd, buf + nw, sz - nw)) >= 0 || errno == EINTR)) + nw += nc > 0 ? nc : 0; + return nc >= 0 ? nw : -1; +} + +int lbuf_wr(struct lbuf *lbuf, int fd, int beg, int end) +{ + char buf[4096]; + long buf_len = 0, sz = 0; + int i; + for (i = beg; i < end; i++) { + char *ln = lbuf->ln[i]; + long nl = lbuf->ln_len[i]; + if (buf_len > 0 && buf_len + nl > sizeof(buf)) { + if (write_fully(fd, buf, buf_len) != buf_len) + return 1; + buf_len = 0; + } + if (nl >= sizeof(buf)) { + if (write_fully(fd, ln, nl) != nl) + return 1; + } else { + memcpy(buf + buf_len, ln, nl); + buf_len += nl; + } + sz += nl; + } + if (buf_len > 0 && write_fully(fd, buf, buf_len) != buf_len) + return 1; + ftruncate(fd, sz); + return 0; +} + +char *lbuf_cp(struct lbuf *lb, int beg, int end) +{ + return lbuf_copy(lb, beg, end, NULL); +} + +char *lbuf_get(struct lbuf *lb, int pos) +{ + return pos >= 0 && pos < lb->ln_n ? lb->ln[pos] : NULL; +} + +int lbuf_len(struct lbuf *lb) +{ + return lb->ln_n; +} + +void lbuf_mark(struct lbuf *lbuf, int mark, int pos, int off) +{ + if (markidx(mark) >= 0) { + lbuf->mark[markidx(mark)] = pos; + lbuf->mark_off[markidx(mark)] = off; + } +} + +int lbuf_jump(struct lbuf *lbuf, int mark, int *pos, int *off) +{ + int mk = markidx(mark); + if (mk < 0 || lbuf->mark[mk] < 0) + return 1; + *pos = lbuf->mark[mk]; + if (off) + *off = lbuf->mark_off[mk]; + return 0; +} + +int lbuf_undo(struct lbuf *lb) +{ + int useq, i; + if (!lb->hist_u) + return 1; + useq = lb->hist[lb->hist_u - 1].seq; + while (lb->hist_u && lb->hist[lb->hist_u - 1].seq == useq) { + struct lopt *lo = &lb->hist[--(lb->hist_u)]; + lbuf_replace(lb, lo->del, lo->del_len, lo->pos, lo->n_ins); + lbuf_loadpos(lb, lo); + for (i = 0; i < LEN(lb->mark); i++) + lbuf_loadmark(lb, lo, i); + } + return 0; +} + +int lbuf_redo(struct lbuf *lb) +{ + int useq; + if (lb->hist_u == lb->hist_n) + return 1; + useq = lb->hist[lb->hist_u].seq; + while (lb->hist_u < lb->hist_n && lb->hist[lb->hist_u].seq == useq) { + struct lopt *lo = &lb->hist[lb->hist_u++]; + lbuf_replace(lb, lo->ins, lo->ins_len, lo->pos, lo->n_del); + lbuf_loadpos(lb, lo); + } + return 0; +} + +static int lbuf_seq(struct lbuf *lb) +{ + return lb->hist_u ? lb->hist[lb->hist_u - 1].seq : lb->useq_last; +} + +/* mark buffer as saved and, if clear, clear the undo history */ +void lbuf_saved(struct lbuf *lb, int clear) +{ + int i; + if (clear) { + for (i = 0; i < lb->hist_n; i++) + lopt_done(&lb->hist[i]); + lb->hist_n = 0; + lb->hist_u = 0; + lb->useq_last = lb->useq; + } + lb->useq_zero = lbuf_seq(lb); + lbuf_modified(xb); +} + +/* was the file modified since the last lbuf_saved() */ +int lbuf_modified(struct lbuf *lb) +{ + return lbuf_seq(lb) != lb->useq_zero; +} + +/* start a new change set */ +void lbuf_tx(struct lbuf *lb) +{ + lb->useq++; +} + +/* mark the line for ex global command */ +void lbuf_globset(struct lbuf *lb, int pos, int dep) +{ + lb->ln_glob[pos] |= 1 << dep; +} + +/* return and clear ex global command mark */ +int lbuf_globget(struct lbuf *lb, int pos, int dep) +{ + int o = lb->ln_glob ? lb->ln_glob[pos] & (1 << dep) : 0; + lb->ln_glob[pos] &= ~(1 << dep); + return o > 0; +} diff --git a/Apps/Neatvi/main/Source/led.c b/Apps/Neatvi/main/Source/led.c new file mode 100644 index 0000000..7203c50 --- /dev/null +++ b/Apps/Neatvi/main/Source/led.c @@ -0,0 +1,327 @@ +/* line editing and drawing */ +#include +#include +#include +#include +#include +#include "vi.h" + +static int led_pos(int dir, int pos, int beg, int end) +{ + return dir >= 0 ? pos - beg : end - pos - 1; +} + +static int led_offdir(char **chrs, int *pos, int i) +{ + if (pos[i] + ren_cwid(chrs[i], pos[i]) == pos[i + 1]) + return +1; + if (pos[i + 1] + ren_cwid(chrs[i + 1], pos[i + 1]) == pos[i]) + return -1; + return 0; +} + +/* highlight text in reverse direction */ +static void led_markrev(int n, char **chrs, int *pos, int *att) +{ + int i = 0, j; + int hl = conf_hl('~'); + while (i + 1 < n) { + int dir = led_offdir(chrs, pos, i); + int beg = i; + while (i + 1 < n && led_offdir(chrs, pos, i) == dir) + i++; + if (dir < 0) + for (j = beg; j <= i; j++) + att[j] = syn_merge(hl, att[j]); + if (i == beg) + i++; + } +} + +/* render and print a line */ +void led_print(char *s0, int row, int cbeg, int cols, char *syn, char **old) +{ + int *pos; /* pos[i]: the screen position of the i-th character */ + int *off; /* off[i]: the character at screen position i */ + int *att; /* att[i]: the attributes of i-th character */ + char **chrs; /* chrs[i]: the i-th character in s1 */ + int cend = cbeg + cols; + int clast = 0; /* the last non-blank column */ + int att_old = 0; + struct sbuf out = {0}; + int n, i, j; + int ctx = dir_context(s0); + int att_blank = 0; /* the attribute of blank space */ + int out_col = 0; /* draw starting at this column */ + int out_off = old && *old ? -1 : 0; + int out_att = 0; + int old_len = old && *old ? strlen(*old) : 0; + chrs = uc_chop(s0, &n); + pos = ren_position(s0, n); + off = malloc((cend - cbeg) * sizeof(off[0])); + memset(off, 0xff, (cend - cbeg) * sizeof(off[0])); + /* initialise off[] using pos[] */ + for (i = 0; i < n; i++) { + int curwid = ren_cwid(chrs[i], pos[i]); + int curbeg = led_pos(ctx, pos[i], cbeg, cend); + int curend = led_pos(ctx, pos[i] + curwid - 1, cbeg, cend); + if (curbeg >= 0 && curbeg < (cend - cbeg) && + curend >= 0 && curend < (cend - cbeg)) { + for (j = 0; j < curwid; j++) + off[led_pos(ctx, pos[i] + j, cbeg, cend)] = i; + } + } + att = syn_highlight(n <= xlim ? syn : "", s0); + /* find the last non-empty column */ + for (i = cbeg; i < cend; i++) + if (off[i - cbeg] >= 0) + clast = i; + /* the attribute of the last character is used for blanks */ + att_blank = n > 0 ? att[n - 1] : 0; + led_markrev(n, chrs, pos, att); + /* generate term output */ + sbuf_str(&out, xvte ? "\33[8l" : ""); /* disable BiDi in vte-based terminals */ + i = cbeg; + while (i < cend && i <= clast) { + int o = off[i - cbeg]; + int att_new = o >= 0 ? att[o] : att_blank; + int soff = sbuf_len(&out); + int scol = i - cbeg; + sbuf_str(&out, term_seqattr(att_new, att_old)); + att_old = att_new; + if (o >= 0) { + if (ren_translate(chrs[o], s0)) { + sbuf_str(&out, ren_translate(chrs[o], s0)); + } else if (uc_isprint(chrs[o])) { + sbuf_mem(&out, chrs[o], uc_len(chrs[o])); + } else { + int cw = 0; + if (chrs[o][0] == '\t' && mapch_get("\t", NULL)) + sbuf_str(&out, mapch_get("\t", &cw)); + for (j = i + cw; j < cend && off[j - cbeg] == o; j++) + sbuf_chr(&out, ' '); + } + while (i < cend && off[i - cbeg] == o) + i++; + } else { + sbuf_chr(&out, ' '); + i++; + } + if (out_off < 0) { + int old_diverged = soff >= old_len || + memcmp(*old + soff, sbuf_buf(&out) + soff, sbuf_len(&out) - soff); + int old_prefix = i > clast && sbuf_len(&out) < old_len; + if (old_diverged || old_prefix) { + out_off = soff; + out_col = scol; + out_att = att_new; + } + } + } + /* write only if the line was changed */ + if (out_off >= 0) { + term_pos(row, out_col); + term_str(term_seqattr(out_att, 0)); + term_str(sbuf_buf(&out) + out_off); + if (clast < cend - 1) + term_str(term_seqkill()); + term_str(term_seqattr(0, att_old)); + } + if (old) { + free(*old); + *old = sbuf_done(&out); + } else { + sbuf_free(&out); + } + free(att); + free(pos); + free(off); + free(chrs); +} + +void led_reset(char **old) +{ + free(*old); + *old = NULL; +} + +static int led_lastchar(char *s) +{ + char *r = *s ? strchr(s, '\0') : s; + if (r != s) + r = uc_beg(s, r - 1); + return r - s; +} + +static int led_lastword(char *s) +{ + char *r = *s ? uc_beg(s, strchr(s, '\0') - 1) : s; + int kind; + while (r > s && uc_isspace(r)) + r = uc_beg(s, r - 1); + kind = r > s ? uc_kind(r) : 0; + while (r > s && uc_kind(uc_beg(s, r - 1)) == kind) + r = uc_beg(s, r - 1); + return r - s; +} + +static void led_printparts(char *pref, char *main, char *post, int *left, int kmap, char *syn, char **old) +{ + struct sbuf ln = {0}; + int off, pos; + sbuf_str(&ln, pref); + sbuf_str(&ln, main); + off = uc_slen(sbuf_buf(&ln)); + sbuf_str(&ln, post); + pos = ren_insert(sbuf_buf(&ln), off); + if (pos >= *left + xcols) + *left = pos - xcols / 2; + if (pos < *left) + *left = pos < xcols ? 0 : pos - xcols / 2; + led_print(sbuf_buf(&ln), -1, *left, xcols, syn, old); + term_pos(-1, led_pos(dir_context(sbuf_buf(&ln)), pos, *left, *left + xcols)); + sbuf_free(&ln); + term_commit(); +} + +/* continue reading the character starting with c */ +static char *led_readchar(int c, int kmap) +{ + static char buf[8]; + int c1, c2; + int i, n; + if (c == TK_CTL('v')) { /* literal character */ + buf[0] = term_read(0); + buf[1] = '\0'; + return buf; + } + if (c == TK_CTL('k')) { /* digraph */ + c1 = term_read(0); + if (TK_INT(c1)) + return NULL; + if (c1 == TK_CTL('k')) + return ""; + c2 = term_read(0); + if (TK_INT(c2)) + return NULL; + return conf_digraph(c1, c2); + } + if ((c & 0xc0) == 0xc0) { /* utf-8 character */ + buf[0] = c; + n = uc_len(buf); + for (i = 1; i < n; i++) + buf[i] = term_read(0); + buf[n] = '\0'; + return buf; + } + return kmap_map(kmap, c); +} + +static int led_match(char *out, int len, char *kwd, char *opt) +{ + while (opt != NULL) { + int i = 0; + while (kwd[i] && kwd[i] == opt[i]) + i++; + if (kwd[i] == '\0') + break; + opt = strchr(opt, '\n') == NULL ? NULL : strchr(opt, '\n') + 1; + } + out[0] = '\0'; + if (opt != NULL) { + int i = 0; + char *beg = opt + strlen(kwd); + while (beg[i] && beg[i] != '\n' && i + 8 < len) + i += uc_len(beg + i); + memcpy(out, beg, i); + out[i] = '\0'; + return 0; + } + return 1; +} + +/* read a line from the terminal */ +static char *led_line(char *pref, char *post, int *left, int *key, int *kmap, char *syn, char *hist) +{ + struct sbuf sb = {0}; + int y, lnmode; + int c = 0; + char cmp[64] = ""; + char *cs; + char *led_old = NULL; + if (pref == NULL) + pref = ""; + if (post == NULL || !post[0]) + post = cmp; + while (1) { + if (hist != NULL) + led_match(cmp, sizeof(cmp), sbuf_buf(&sb), hist); + led_printparts(pref, sbuf_buf(&sb), post, left, *kmap, syn, &led_old); + c = term_read(0); + switch (c) { + case TK_CTL('f'): + *kmap = xkmap_alt; + continue; + case TK_CTL('e'): + *kmap = 0; + continue; + case TK_CTL('h'): + case 127: + if (sbuf_len(&sb)) + sbuf_cut(&sb, led_lastchar(sbuf_buf(&sb))); + break; + case TK_CTL('u'): + sbuf_cut(&sb, 0); + break; + case TK_CTL('w'): + if (sbuf_len(&sb)) + sbuf_cut(&sb, led_lastword(sbuf_buf(&sb))); + break; + case TK_CTL('p'): + if (reg_get(0, &lnmode)) + sbuf_str(&sb, reg_get(0, &lnmode)); + break; + case TK_CTL('r'): + y = term_read(0); + if (y > 0 && reg_get(y, &lnmode)) + sbuf_str(&sb, reg_get(y, &lnmode)); + break; + case TK_CTL('a'): + sbuf_str(&sb, cmp); + cmp[0] = '\0'; + break; + default: + if (c == '\n' || TK_INT(c)) + break; + if ((cs = led_readchar(c, *kmap)) != NULL) + sbuf_str(&sb, cs); + } + if (c == '\n') + led_printparts(pref, sbuf_buf(&sb), "", left, *kmap, syn, &led_old); + if (c == '\n' || TK_INT(c)) + break; + } + led_reset(&led_old); + *key = c; + return sbuf_done(&sb); +} + +/* read an ex command */ +char *led_prompt(char *pref, char *post, int *kmap, char *syn, char *hist) +{ + int key; + int left = 0; + char *s = led_line(pref, post, &left, &key, kmap, syn, hist); + if (key == '\n') { + struct sbuf sb = {0}; + if (pref) + sbuf_str(&sb, pref); + sbuf_str(&sb, s); + if (post) + sbuf_str(&sb, post); + free(s); + return sbuf_done(&sb); + } + free(s); + return NULL; +} diff --git a/Apps/Neatvi/main/Source/mot.c b/Apps/Neatvi/main/Source/mot.c new file mode 100644 index 0000000..63e26f5 --- /dev/null +++ b/Apps/Neatvi/main/Source/mot.c @@ -0,0 +1,224 @@ +#include +#include +#include "vi.h" + +int lbuf_indents(struct lbuf *lb, int r) +{ + char *ln = lbuf_get(lb, r); + int o; + if (!ln) + return 0; + for (o = 0; ln[0] == ' ' || ln[0] == '\t'; o++) + ln = uc_next(ln); + return o; +} + +static int uc_nextdir(char **s, char *beg, int dir) +{ + if (dir < 0) { + if (*s == beg) + return 1; + *s = uc_prev(beg, *s); + } else { + *s = uc_next(*s); + if (!(*s)[0]) + return 1; + } + return 0; +} + +int lbuf_findchar(struct lbuf *lb, char *cs, int cmd, int n, int *row, int *off) +{ + char *ln = lbuf_get(lb, *row); + char *s; + int dir = (cmd == 'f' || cmd == 't') ? +1 : -1; + if (!ln) + return 1; + if (n < 0) + dir = -dir; + if (n < 0) + n = -n; + s = uc_chr(ln, *off); + while (n > 0 && !uc_nextdir(&s, ln, dir)) + if (uc_code(s) == uc_code(cs)) + n--; + if (!n && (cmd == 't' || cmd == 'T')) + uc_nextdir(&s, ln, -dir); + if (!n) + *off = uc_off(ln, s - ln); + return n != 0; +} + +int lbuf_search(struct lbuf *lb, char *kw, int dir, int *r, int *o, int *len) +{ + int offs[2]; + int found = 0; + int r0 = *r, o0 = *o; + int i; + struct rstr *re = rstr_make(kw, xic ? RE_ICASE : 0); + if (!re) + return 1; + for (i = r0; !found && i >= 0 && i < lbuf_len(lb); i += dir) { + char *s = lbuf_get(lb, i); + int off = dir > 0 && r0 == i ? uc_chr(s, o0 + 1) - s : 0; + while (rstr_find(re, s + off, 1, offs, + off ? RE_NOTBOL : 0) >= 0) { + if (dir < 0 && r0 == i && + uc_off(s, off + offs[0]) >= o0) + break; + found = 1; + *o = uc_off(s, off + offs[0]); + *r = i; + *len = uc_off(s + off + offs[0], offs[1] - offs[0]); + off += offs[1] > offs[0] ? offs[1] : offs[1] + 1; + if (dir > 0 || !s[off] || s[off] == '\n') + break; + } + } + rstr_free(re); + return !found; +} + +int lbuf_paragraphbeg(struct lbuf *lb, int dir, int *row, int *off) +{ + while (*row >= 0 && *row < lbuf_len(lb) && !strcmp("\n", lbuf_get(lb, *row))) + *row += dir; + while (*row >= 0 && *row < lbuf_len(lb) && strcmp("\n", lbuf_get(lb, *row))) + *row += dir; + *row = MAX(0, MIN(*row, lbuf_len(lb) - 1)); + *off = 0; + return 0; +} + +int lbuf_sectionbeg(struct lbuf *lb, int dir, char *sec, int *row, int *off) +{ + struct rstr *re = rstr_make(sec, 0); + *row += dir; + while (*row >= 0 && *row < lbuf_len(lb)) { + if (rstr_find(re, lbuf_get(lb, *row), 0, NULL, 0) >= 0) + break; + *row += dir; + } + rstr_free(re); + *row = MAX(0, MIN(*row, lbuf_len(lb) - 1)); + *off = 0; + return 0; +} + +static int lbuf_lnnext(struct lbuf *lb, int dir, int *r, int *o) +{ + int off = *o + dir; + if (off < 0 || !lbuf_get(lb, *r) || off >= uc_slen(lbuf_get(lb, *r))) + return 1; + *o = off; + return 0; +} + +int lbuf_eol(struct lbuf *lb, int row) +{ + int len = lbuf_get(lb, row) ? uc_slen(lbuf_get(lb, row)) : 0; + return len ? len - 1 : 0; +} + +static int lbuf_next(struct lbuf *lb, int dir, int *r, int *o) +{ + if (dir < 0 && *r >= lbuf_len(lb)) + *r = MAX(0, lbuf_len(lb) - 1); + if (lbuf_lnnext(lb, dir, r, o)) { + if (!lbuf_get(lb, *r + dir)) + return -1; + *r += dir; + *o = dir > 0 ? 0 : lbuf_eol(lb, *r); + return 0; + } + return 0; +} + +/* return a pointer to the character at visual position c of line r */ +static char *lbuf_chr(struct lbuf *lb, int r, int c) +{ + char *ln = lbuf_get(lb, r); + return ln ? uc_chr(ln, c) : ""; +} + +/* move to the last character of the word */ +static int lbuf_wordlast(struct lbuf *lb, int kind, int dir, int *row, int *off) +{ + if (!kind || !(uc_kind(lbuf_chr(lb, *row, *off)) & kind)) + return 0; + while (uc_kind(lbuf_chr(lb, *row, *off)) & kind) + if (lbuf_next(lb, dir, row, off)) + return 1; + if (!(uc_kind(lbuf_chr(lb, *row, *off)) & kind)) + lbuf_next(lb, -dir, row, off); + return 0; +} + +int lbuf_wordbeg(struct lbuf *lb, int big, int dir, int *row, int *off) +{ + int nl; + lbuf_wordlast(lb, big ? 3 : uc_kind(lbuf_chr(lb, *row, *off)), dir, row, off); + nl = uc_code(lbuf_chr(lb, *row, *off)) == '\n'; + if (lbuf_next(lb, dir, row, off)) + return 1; + while (uc_isspace(lbuf_chr(lb, *row, *off))) { + nl += uc_code(lbuf_chr(lb, *row, *off)) == '\n'; + if (nl == 2) + return 0; + if (lbuf_next(lb, dir, row, off)) + return 1; + } + return 0; +} + +int lbuf_wordend(struct lbuf *lb, int big, int dir, int *row, int *off) +{ + int nl = 0; + if (!uc_isspace(lbuf_chr(lb, *row, *off))) { + if (lbuf_next(lb, dir, row, off)) + return 1; + nl = dir < 0 && uc_code(lbuf_chr(lb, *row, *off)) == '\n'; + } + nl += dir > 0 && uc_code(lbuf_chr(lb, *row, *off)) == '\n'; + while (uc_isspace(lbuf_chr(lb, *row, *off))) { + if (lbuf_next(lb, dir, row, off)) + return 1; + nl += uc_code(lbuf_chr(lb, *row, *off)) == '\n'; + if (nl == 2) { + if (dir < 0) + lbuf_next(lb, -dir, row, off); + return 0; + } + } + if (lbuf_wordlast(lb, big ? 3 : uc_kind(lbuf_chr(lb, *row, *off)), dir, row, off)) + return 1; + return 0; +} + +/* move to the matching character */ +int lbuf_pair(struct lbuf *lb, int *row, int *off) +{ + int r = *row, o = *off; + char *pairs = "()[]{}"; + int pchr; /* parenthesis character */ + int pidx; /* index into pairs[] */ + int dep = 1; /* parenthesis depth */ + while ((pchr = (unsigned char) lbuf_chr(lb, r, o)[0]) && !strchr(pairs, pchr)) + o++; + if (!pchr) + return 1; + pidx = strchr(pairs, pchr) - pairs; + while (!lbuf_next(lb, (pidx & 1) ? -1 : +1, &r, &o)) { + int c = (unsigned char) lbuf_chr(lb, r, o)[0]; + if (c == pairs[pidx ^ 1]) + dep--; + if (c == pairs[pidx]) + dep++; + if (!dep) { + *row = r; + *off = o; + return 0; + } + } + return 1; +} diff --git a/Apps/Neatvi/main/Source/reg.c b/Apps/Neatvi/main/Source/reg.c new file mode 100644 index 0000000..a634ad8 --- /dev/null +++ b/Apps/Neatvi/main/Source/reg.c @@ -0,0 +1,79 @@ +#include +#include +#include +#include +#include "vi.h" + +static char *bufs[256]; +static int lnmode[256]; + +static char *reg_getraw(int c, int *ln) +{ + if (ln != NULL) + *ln = lnmode[c]; + return bufs[c]; +} + +char *reg_get(int c, int *lnmode) +{ + static char ln[1024]; + static char linno[16]; + static char colno[16]; + if (c == '"') + c = 0; + if (c == ';') { + char *s = lbuf_get(xb, xrow); + snprintf(ln, sizeof(ln), "%s", s ? s : ""); + if (strchr(ln, '\n') != NULL) + *strchr(ln, '\n') = '\0'; + if (lnmode != NULL) + *lnmode = 1; + return ln; + } + if (c == ']') { + char *s = lbuf_get(xb, xrow); + if (uc_word(s, ln, sizeof(ln), xoff, "")) + ln[0] = '\0'; + return ln; + } + if (c == '#') { + snprintf(linno, sizeof(linno), "%d", xrow + 1); + return linno; + } + if (c == '^') { + snprintf(colno, sizeof(colno), "%d", xoff + 1); + return colno; + } + return reg_getraw(c, lnmode); +} + +static void reg_putraw(int c, char *s, int ln) +{ + char *pre = isupper(c) && bufs[tolower(c)] ? bufs[tolower(c)] : ""; + char *buf = malloc(strlen(pre) + strlen(s) + 1); + strcpy(buf, pre); + strcat(buf, s); + free(bufs[tolower(c)]); + bufs[tolower(c)] = buf; + lnmode[tolower(c)] = ln; +} + +void reg_put(int c, char *s, int ln) +{ + int i, i_ln; + char *i_s; + if ((ln || strchr(s, '\n')) && (!c || isalpha(c))) { + for (i = 8; i > 0; i--) + if ((i_s = reg_get('0' + i, &i_ln))) + reg_putraw('0' + i + 1, i_s, i_ln); + reg_putraw('1', s, ln); + } + reg_putraw(c, s, ln); +} + +void reg_done(void) +{ + int i; + for (i = 0; i < LEN(bufs); i++) + free(bufs[i]); +} diff --git a/Apps/Neatvi/main/Source/regex.c b/Apps/Neatvi/main/Source/regex.c new file mode 100644 index 0000000..c323c79 --- /dev/null +++ b/Apps/Neatvi/main/Source/regex.c @@ -0,0 +1,730 @@ +#include +#include +#include +#include +#include "regex.h" + +#define MAX(a, b) ((a) < (b) ? (b) : (a)) +#define LEN(a) (sizeof(a) / sizeof((a)[0])) + +/* regular expressions atoms */ +#define RA_CHR '\0' /* character literal */ +#define RA_BEG '^' /* string start */ +#define RA_END '$' /* string end */ +#define RA_ANY '.' /* any character */ +#define RA_BRK '[' /* bracket expression */ +#define RA_WBEG '<' /* word start */ +#define RA_WEND '>' /* word end */ + +/* regular expression node types */ +#define RN_ATOM '\0' /* regular expression */ +#define RN_CAT 'c' /* concatenation */ +#define RN_ALT '|' /* alternate expressions */ +#define RN_GRP '(' /* pattern group */ + +/* regular expression program instructions */ +#define RI_ATOM '\0' /* regular expression */ +#define RI_FORK 'f' /* fork the execution */ +#define RI_JUMP 'j' /* jump to the given instruction */ +#define RI_MARK 'm' /* mark the current position */ +#define RI_MATCH 'q' /* pattern or sub-pattern is matched */ + +/* regular expression atom */ +struct ratom { + int ra; /* atom type (RA_*) */ + char *s; /* atom argument */ +}; + +/* regular expression instruction */ +struct rinst { + struct ratom ra; /* regular expression atom (RI_ATOM) */ + int ri; /* instruction type (RI_*) */ + int dst; /* destination of RI_FORK, RI_JUMP */ + int mark; /* mark (RI_MARK) */ +}; + +/* regular expression program */ +struct regex { + struct rinst *p; /* the program */ + int n; /* number of instructions */ + int flg; /* regcomp() flags */ +}; + +/* regular expression matching state */ +struct rstate_saved { + int s, mark_pos, pc; /* saved rstate state */ +}; +struct rstate_mark { + int num, val; /* updated mark and its value */ +}; +struct rstate { + char *s; /* the current position in the string */ + char *o; /* the beginning of the string */ + int pc; /* program counter */ + int flg; /* flags passed to regcomp() and regexec() */ + int subcnt; /* number of groups to return */ + struct rstate_mark *mark; /* mark updates */ + int mark_pos, mark_len; /* last item in mark_num[] and mark_val[] */ + struct rstate_saved *saved; /* saved rstate states */ + int saved_pos, saved_len; /* last pushed value in past_s and past_mpos[] */ + /* before heap allocations, these buffers are used */ + struct rstate_saved _saved[128]; + struct rstate_mark _mark[128]; +}; + +static void rstate_init(struct rstate *rs, char *s, int flg, int subcnt) +{ + rs->o = s; + rs->s = s; + rs->flg = flg; + rs->mark = rs->_mark; + rs->mark_pos = 0; + rs->mark_len = LEN(rs->_mark); + rs->saved = rs->_saved; + rs->saved_pos = 0; + rs->saved_len = LEN(rs->_saved); + rs->subcnt = subcnt; +} + +static void rstate_done(struct rstate *rs) +{ + if (rs->mark != rs->_mark) + free(rs->mark); + if (rs->saved != rs->_saved) + free(rs->saved); +} + +static int rstate_push(struct rstate *rs, int pc) +{ + if (rs->saved_pos >= rs->saved_len) { + int saved_len = rs->saved_len * 2; + struct rstate_saved *saved = malloc(saved_len * sizeof(saved[0])); + if (!saved) + return 1; + memcpy(saved, rs->saved, rs->saved_len * sizeof(saved[0])); + if (rs->saved != rs->_saved) + free(rs->saved); + rs->saved = saved; + rs->saved_len = saved_len; + } + rs->saved[rs->saved_pos].s = rs->s - rs->o; + rs->saved[rs->saved_pos].mark_pos = rs->mark_pos; + rs->saved[rs->saved_pos].pc = pc; + rs->saved_pos++; + return 0; +} + +static int rstate_pop(struct rstate *rs) +{ + if (rs->saved_pos == 0) + return 1; + rs->saved_pos--; + rs->s = rs->o + rs->saved[rs->saved_pos].s; + rs->mark_pos = rs->saved[rs->saved_pos].mark_pos; + rs->pc = rs->saved[rs->saved_pos].pc; + return 0; +} + +static int rstate_mark(struct rstate *rs, int mark) +{ + if (mark >= rs->subcnt * 2) + return 0; + if (rs->mark_pos >= rs->mark_len) { + int mark_len = rs->mark_len * 2; + struct rstate_mark *mark = malloc(mark_len * sizeof(mark[0])); + if (!mark) + return 1; + memcpy(mark, rs->mark, rs->mark_len * sizeof(mark[0])); + if (rs->mark != rs->_mark) + free(rs->mark); + rs->mark = mark; + rs->mark_len = mark_len; + } + rs->mark[rs->mark_pos].num = mark; + rs->mark[rs->mark_pos].val = rs->s - rs->o; + rs->mark_pos++; + return 0; +} + +static void rstate_marks(struct rstate *rs, regmatch_t sub[]) +{ + int i; + for (i = 0; i < rs->mark_pos; i++) { + int mark = rs->mark[i].num; + if (mark & 1) + sub[mark >> 1].rm_eo = rs->mark[i].val; + else + sub[mark >> 1].rm_so = rs->mark[i].val; + } +} + +/* regular expression tree; used for parsing */ +struct rnode { + struct ratom ra; /* regular expression atom (RN_ATOM) */ + struct rnode *c1, *c2; /* children */ + int mincnt, maxcnt; /* number of repetitions */ + int grp; /* group number */ + int rn; /* node type (RN_*) */ +}; + +static struct rnode *rnode_make(int rn, struct rnode *c1, struct rnode *c2) +{ + struct rnode *rnode = malloc(sizeof(*rnode)); + memset(rnode, 0, sizeof(*rnode)); + rnode->rn = rn; + rnode->c1 = c1; + rnode->c2 = c2; + rnode->mincnt = 1; + rnode->maxcnt = 1; + return rnode; +} + +static void rnode_free(struct rnode *rnode) +{ + if (rnode->c1) + rnode_free(rnode->c1); + if (rnode->c2) + rnode_free(rnode->c2); + free(rnode->ra.s); + free(rnode); +} + +static int uc_len(char *s) +{ + int c = (unsigned char) s[0]; + if (~c & 0xc0 || !s[1]) /* ASCII or invalid */ + return c > 0; + if (~c & 0x20 || !s[2]) + return 2; + if (~c & 0x10 || !s[3]) + return 3; + if (~c & 0x08) + return 4; + return 1; +} + +static int uc_dec(char *s) +{ + int c = (unsigned char) s[0]; + if (~c & 0xc0 || !s[1]) /* ASCII or invalid */ + return c; + if (~c & 0x20 || !s[2]) + return ((c & 0x1f) << 6) | (s[1] & 0x3f); + if (~c & 0x10 || !s[3]) + return ((c & 0x0f) << 12) | ((s[1] & 0x3f) << 6) | (s[2] & 0x3f); + if (~c & 0x08) + return ((c & 0x07) << 18) | ((s[1] & 0x3f) << 12) | ((s[2] & 0x3f) << 6) | (s[3] & 0x3f); + return c; +} + +static void ratom_copy(struct ratom *dst, struct ratom *src) +{ + dst->ra = src->ra; + dst->s = NULL; + if (src->s) { + int len = strlen(src->s); + dst->s = malloc(len + 1); + memcpy(dst->s, src->s, len + 1); + } +} + +static int brk_len(char *s) +{ + int n = 1; + if (s[n] == '^') /* exclusion mark */ + n++; + if (s[n] == ']') /* handling []a] */ + n++; + while (s[n] && s[n] != ']') { + if (s[n] == '[' && (s[n + 1] == ':' || s[n + 1] == '=')) + while (s[n] && s[n] != ']') + n++; + if (s[n]) + n++; + } + return s[n] == ']' ? n + 1 : n; +} + +static void ratom_readbrk(struct ratom *ra, char **pat) +{ + int len = brk_len(*pat); + ra->ra = RA_BRK; + ra->s = malloc(len + 1); + memcpy(ra->s, *pat, len); + ra->s[len] = '\0'; + *pat += len; +} + +static void ratom_read(struct ratom *ra, char **pat) +{ + char *s; + int len; + switch ((unsigned char) **pat) { + case '.': + ra->ra = RA_ANY; + (*pat)++; + break; + case '^': + ra->ra = RA_BEG; + (*pat)++; + break; + case '$': + ra->ra = RA_END; + (*pat)++; + break; + case '[': + ratom_readbrk(ra, pat); + break; + case '\\': + if ((*pat)[1] == '<' || (*pat)[1] == '>') { + ra->ra = (*pat)[1] == '<' ? RA_WBEG : RA_WEND; + *pat += 2; + break; + } + (*pat)++; + default: + ra->ra = RA_CHR; + s = *pat; + while ((s == *pat) || !strchr(".^$[(|)*?+{\\", (unsigned char) s[0])) { + int l = uc_len(s); + if (s != *pat && s[l] != '\0' && strchr("*?+{", (unsigned char) s[l])) + break; + s += uc_len(s); + } + len = s - *pat; + ra->s = malloc(len + 1); + memcpy(ra->s, *pat, len); + ra->s[len] = '\0'; + *pat += len; + } +} + +static char *uc_beg(char *beg, char *s) +{ + while (s > beg && (((unsigned char) *s) & 0xc0) == 0x80) + s--; + return s; +} + +static int isword(char *s) +{ + int c = (unsigned char) s[0]; + return isalnum(c) || c == '_' || c > 127; +} + +static char *brk_classes[][2] = { + {":alnum:", "a-zA-Z0-9"}, + {":alpha:", "a-zA-Z"}, + {":blank:", " \t"}, + {":digit:", "0-9"}, + {":lower:", "a-z"}, + {":print:", "\x20-\x7e"}, + {":punct:", "][!\"#$%&'()*+,./:;<=>?@\\^_`{|}~-"}, + {":space:", " \t\r\n\v\f"}, + {":upper:", "A-Z"}, + {":word:", "a-zA-Z0-9_"}, + {":xdigit:", "a-fA-F0-9"}, +}; + +static int brk_match(char *brk, int c, int flg) +{ + int beg, end; + int i; + int not = brk[0] == '^'; + char *p = not ? brk + 1 : brk; + char *p0 = p; + if (flg & REG_ICASE && c < 128 && isupper(c)) + c = tolower(c); + while (*p && (p == p0 || *p != ']')) { + if (p[0] == '[' && p[1] == ':') { + for (i = 0; i < LEN(brk_classes); i++) { + char *cc = brk_classes[i][0]; + char *cp = brk_classes[i][1]; + if (!strncmp(cc, p + 1, strlen(cc))) + if (!brk_match(cp, c, flg)) + return not; + } + p += brk_len(p); + continue; + } + beg = uc_dec(p); + p += uc_len(p); + end = beg; + if (p[0] == '-' && p[1] && p[1] != ']') { + p++; + end = uc_dec(p); + p += uc_len(p); + } + if (flg & REG_ICASE && beg < 128 && isupper(beg)) + beg = tolower(beg); + if (flg & REG_ICASE && end < 128 && isupper(end)) + end = tolower(end); + if (c >= beg && c <= end) + return not; + } + return !not; +} + +static int ratom_match(struct ratom *ra, struct rstate *rs) +{ + if (ra->ra == RA_CHR && !(rs->flg & REG_ICASE)) { + char *s = ra->s; + char *r = rs->s; + while (*s && *s == *r) + s++, r++; + if (*s) + return 1; + rs->s = r; + return 0; + } + if (ra->ra == RA_CHR) { + int pos = 0; + while (ra->s[pos]) { + int c1 = uc_dec(ra->s + pos); + int c2 = uc_dec(rs->s + pos); + if (rs->flg & REG_ICASE && c1 < 128 && isupper(c1)) + c1 = tolower(c1); + if (rs->flg & REG_ICASE && c2 < 128 && isupper(c2)) + c2 = tolower(c2); + if (c1 != c2) + return 1; + pos += uc_len(ra->s + pos); + } + rs->s += pos; + return 0; + } + if (ra->ra == RA_ANY) { + if (!rs->s[0] || (rs->s[0] == '\n' && !!(rs->flg & REG_NEWLINE))) + return 1; + rs->s += uc_len(rs->s); + return 0; + } + if (ra->ra == RA_BRK) { + int c = uc_dec(rs->s); + if (!c || (c == '\n' && !!(rs->flg & REG_NEWLINE) && ra->s[1] == '^')) + return 1; + rs->s += uc_len(rs->s); + return brk_match(ra->s + 1, c, rs->flg); + } + if (ra->ra == RA_BEG && rs->s == rs->o) + return !!(rs->flg & REG_NOTBOL); + if (ra->ra == RA_BEG && rs->s > rs->o && rs->s[-1] == '\n') + return !(rs->flg & REG_NEWLINE); + if (ra->ra == RA_END && rs->s[0] == '\0') + return !!(rs->flg & REG_NOTEOL); + if (ra->ra == RA_END && rs->s[0] == '\n') + return !(rs->flg & REG_NEWLINE); + if (ra->ra == RA_WBEG) + return !((rs->s == rs->o || !isword(uc_beg(rs->o, rs->s - 1))) && + isword(rs->s)); + if (ra->ra == RA_WEND) + return !(rs->s != rs->o && isword(uc_beg(rs->o, rs->s - 1)) && + (!rs->s[0] || !isword(rs->s))); + return 1; +} + +static struct rnode *rnode_parse(char **pat); + +static struct rnode *rnode_grp(char **pat) +{ + struct rnode *rnode = NULL; + if ((*pat)[0] != '(') + return NULL; + ++*pat; + if ((*pat)[0] != ')') { + rnode = rnode_parse(pat); + if (!rnode) + return NULL; + } + if ((*pat)[0] != ')') { + rnode_free(rnode); + return NULL; + } + ++*pat; + return rnode_make(RN_GRP, rnode, NULL); +} + +static struct rnode *rnode_atom(char **pat) +{ + struct rnode *rnode; + if (!**pat) + return NULL; + if ((*pat)[0] == '|' || (*pat)[0] == ')') + return NULL; + if ((*pat)[0] == '(') { + rnode = rnode_grp(pat); + } else { + rnode = rnode_make(RN_ATOM, NULL, NULL); + ratom_read(&rnode->ra, pat); + } + if (!rnode) + return NULL; + if ((*pat)[0] == '*' || (*pat)[0] == '?') { + rnode->mincnt = 0; + rnode->maxcnt = (*pat)[0] == '*' ? -1 : 1; + ++*pat; + } + if ((*pat)[0] == '+') { + rnode->mincnt = 1; + rnode->maxcnt = -1; + ++*pat; + } + if ((*pat)[0] == '{') { + rnode->mincnt = 0; + rnode->maxcnt = 0; + ++*pat; + while (isdigit((unsigned char) **pat)) + rnode->mincnt = rnode->mincnt * 10 + *(*pat)++ - '0'; + if (**pat == ',') { + (*pat)++; + if ((*pat)[0] == '}') + rnode->maxcnt = -1; + while (isdigit((unsigned char) **pat)) + rnode->maxcnt = rnode->maxcnt * 10 + *(*pat)++ - '0'; + } else { + rnode->maxcnt = rnode->mincnt; + } + ++*pat; + } + return rnode; +} + +static struct rnode *rnode_seq(char **pat) +{ + struct rnode *c1 = rnode_atom(pat); + struct rnode *c2; + if (!c1) + return NULL; + c2 = rnode_seq(pat); + return c2 ? rnode_make(RN_CAT, c1, c2) : c1; +} + +static struct rnode *rnode_parse(char **pat) +{ + struct rnode *c1 = rnode_seq(pat); + struct rnode *c2; + if ((*pat)[0] != '|') + return c1; + ++*pat; + c2 = rnode_parse(pat); + return rnode_make(RN_ALT, c1, c2); +} + +static int rnode_count(struct rnode *rnode) +{ + int n = 1; + if (!rnode) + return 0; + if (rnode->rn == RN_CAT) + n = rnode_count(rnode->c1) + rnode_count(rnode->c2); + if (rnode->rn == RN_ALT) + n = rnode_count(rnode->c1) + rnode_count(rnode->c2) + 2; + if (rnode->rn == RN_GRP) + n = rnode_count(rnode->c1) + 2; + if (rnode->mincnt == 0 && rnode->maxcnt == 0) + return 0; + if (rnode->mincnt == 1 && rnode->maxcnt == 1) + return n; + if (rnode->maxcnt < 0) { + n = (rnode->mincnt + 1) * n + 2; + } else { + n = (rnode->mincnt + rnode->maxcnt) * n + + rnode->maxcnt - rnode->mincnt; + } + if (!rnode->mincnt) + n++; + return n; +} + +static int rnode_grpnum(struct rnode *rnode, int num) +{ + int cur = 0; + if (!rnode) + return 0; + if (rnode->rn == RN_GRP) + rnode->grp = num + cur++; + cur += rnode_grpnum(rnode->c1, num + cur); + cur += rnode_grpnum(rnode->c2, num + cur); + return cur; +} + +static int re_insert(struct regex *p, int ri) +{ + p->p[p->n++].ri = ri; + return p->n - 1; +} + +static void rnode_emit(struct rnode *n, struct regex *p); + +static void rnode_emitnorep(struct rnode *n, struct regex *p) +{ + int fork, done, mark; + if (n->rn == RN_ALT) { + fork = re_insert(p, RI_FORK); + rnode_emit(n->c1, p); + done = re_insert(p, RI_JUMP); + p->p[fork].dst = p->n; + rnode_emit(n->c2, p); + p->p[done].dst = p->n; + } + if (n->rn == RN_CAT) { + rnode_emit(n->c1, p); + rnode_emit(n->c2, p); + } + if (n->rn == RN_GRP) { + mark = re_insert(p, RI_MARK); + p->p[mark].mark = 2 * n->grp; + rnode_emit(n->c1, p); + mark = re_insert(p, RI_MARK); + p->p[mark].mark = 2 * n->grp + 1; + } + if (n->rn == RN_ATOM) { + int atom = re_insert(p, RI_ATOM); + ratom_copy(&p->p[atom].ra, &n->ra); + } +} + +static void rnode_emit(struct rnode *n, struct regex *p) +{ + int jump = -1; /* the last jump to repetition end */ + int i; + if (!n) + return; + if (n->mincnt == 0 && n->maxcnt == 0) + return; + if (n->mincnt == 1 && n->maxcnt == 1) { + rnode_emitnorep(n, p); + return; + } + for (i = 0; i < n->mincnt; i++) + rnode_emitnorep(n, p); + for (i = n->mincnt; i < n->maxcnt; i++) { + int fork = re_insert(p, RI_FORK); + p->p[fork].dst = jump; + jump = fork; + rnode_emitnorep(n, p); + } + while (jump >= 0) { + int prev = p->p[jump].dst; + p->p[jump].dst = p->n; + jump = prev; + } + if (n->maxcnt < 0) { + int fork = re_insert(p, RI_FORK); + rnode_emitnorep(n, p); + jump = re_insert(p, RI_JUMP); + p->p[jump].dst = fork; + p->p[fork].dst = p->n; + } +} + +int regcomp(regex_t *preg, char *pat, int flg) +{ + struct rnode *rnode = rnode_parse(&pat); + struct regex *re; + int n = rnode_count(rnode) + 3; + int mark; + if (!rnode) + return 1; + rnode_grpnum(rnode, 1); + re = malloc(sizeof(*re)); + memset(re, 0, sizeof(*re)); + re->p = malloc(n * sizeof(re->p[0])); + memset(re->p, 0, n * sizeof(re->p[0])); + mark = re_insert(re, RI_MARK); + re->p[mark].mark = 0; + rnode_emit(rnode, re); + mark = re_insert(re, RI_MARK); + re->p[mark].mark = 1; + mark = re_insert(re, RI_MATCH); + rnode_free(rnode); + re->flg = flg; + *preg = re; + return 0; +} + +void regfree(regex_t *preg) +{ + struct regex *re = *preg; + int i; + for (i = 0; i < re->n; i++) + if (re->p[i].ri == RI_ATOM) + free(re->p[i].ra.s); + free(re->p); + free(re); +} + +static int re_rec(struct regex *re, struct rstate *rs) +{ + struct rinst *ri = NULL; + while (1) { + ri = &re->p[rs->pc]; + if (ri->ri == RI_ATOM) { + if (!ratom_match(&ri->ra, rs)) { + rs->pc++; + } else if (rstate_pop(rs)) { + return 1; + } + continue; + } + if (ri->ri == RI_MARK) { + rstate_mark(rs, ri->mark); + rs->pc++; + continue; + } + if (ri->ri == RI_JUMP) { + rs->pc = ri->dst; + continue; + } + if (ri->ri == RI_FORK) { + if (rstate_push(rs, ri->dst)) + return 1; + rs->pc++; + continue; + } + if (ri->ri == RI_MATCH) + return 0; + if (rstate_pop(rs)) + break; + } + return 1; +} + +static int re_recmatch(struct regex *re, struct rstate *rs) +{ + rs->pc = 0; + rs->mark_pos = 0; + rs->saved_pos = 0; + if (!re_rec(re, rs)) + return 0; + return 1; +} + +int regexec(regex_t *preg, char *s, int nsub, regmatch_t psub[], int flg) +{ + struct regex *re = *preg; + struct rstate rs; + char *o = s; + int i; + rstate_init(&rs, s, re->flg | flg, flg & REG_NOSUB ? 0 : nsub); + for (i = 0; i < nsub; i++) { + psub[i].rm_so = -1; + psub[i].rm_eo = -1; + } + while (*o && !((flg & REG_EOLSTOP) && o != rs.o && *o == '\n')) { + rs.s = o = s; + s += uc_len(s); + if (!re_recmatch(re, &rs)) { + rstate_marks(&rs, psub); + rstate_done(&rs); + return 0; + } + } + rstate_done(&rs); + return 1; +} + +int regerror(int errcode, regex_t *preg, char *errbuf, int errbuf_size) +{ + return 0; +} diff --git a/Apps/Neatvi/main/Source/regex.h b/Apps/Neatvi/main/Source/regex.h new file mode 100644 index 0000000..0b53091 --- /dev/null +++ b/Apps/Neatvi/main/Source/regex.h @@ -0,0 +1,19 @@ +#define REG_EXTENDED 0x01 +#define REG_NOSUB 0x02 +#define REG_ICASE 0x04 +#define REG_NEWLINE 0x08 +#define REG_NOTBOL 0x10 +#define REG_NOTEOL 0x20 +#define REG_EOLSTOP 0x40 + +typedef struct { + long rm_so; + long rm_eo; +} regmatch_t; + +typedef struct regex *regex_t; + +int regcomp(regex_t *preg, char *regex, int cflags); +int regexec(regex_t *preg, char *str, int nmatch, regmatch_t pmatch[], int eflags); +int regerror(int errcode, regex_t *preg, char *errbuf, int errbuf_size); +void regfree(regex_t *preg); diff --git a/Apps/Neatvi/main/Source/ren.c b/Apps/Neatvi/main/Source/ren.c new file mode 100644 index 0000000..d71fff2 --- /dev/null +++ b/Apps/Neatvi/main/Source/ren.c @@ -0,0 +1,184 @@ +/* rendering strings */ +#include +#include +#include +#include +#include "vi.h" + +/* specify the screen position of the characters in s; reordering version */ +static int *ren_position_reorder(char *s, int n) +{ + int i, cnt; + char **chrs = uc_chop(s, &cnt); + int *off, *pos; + int cpos = 0; + pos = malloc((n + 1) * sizeof(pos[0])); + for (i = 0; i < n; i++) + pos[i] = i; + if (xorder) + dir_reorder(s, pos); + off = malloc(n * sizeof(off[0])); + for (i = 0; i < n; i++) + off[pos[i]] = i; + for (i = 0; i < n; i++) { + pos[off[i]] = cpos; + cpos += ren_cwid(chrs[off[i]], cpos); + } + pos[n] = cpos; + free(chrs); + free(off); + return pos; +} + +/* specify the screen position of the characters in s; fast version */ +int *ren_position(char *s, int n) +{ + int cpos = 0; + int *pos; + int i; + if (n <= xlim && (xorder == 2 || (xorder == 1 && (n < strlen(s) || dir_context(s) < 0)))) + return ren_position_reorder(s, n); + pos = malloc((n + 1) * sizeof(pos[0])); + for (i = 0; i < n; i++, s += uc_len(s)) { + pos[i] = cpos; + cpos += ren_cwid(s, cpos); + } + pos[i] = cpos; + return pos; +} + +int ren_wid(char *s) +{ + int n = uc_slen(s); + int *pos = ren_position(s, n); + int ret = pos[n]; + free(pos); + return ret; +} + +/* find the next character after visual position p; if cur, start from p itself */ +static int pos_next(int *pos, int n, int p, int cur) +{ + int i, ret = -1; + for (i = 0; i < n; i++) + if (pos[i] - !cur >= p && (ret < 0 || pos[i] < pos[ret])) + ret = i; + return ret >= 0 ? pos[ret] : -1; +} + +/* find the previous character after visual position p; if cur, start from p itself */ +static int pos_prev(int *pos, int n, int p, int cur) +{ + int i, ret = -1; + for (i = 0; i < n; i++) + if (pos[i] + !cur <= p && (ret < 0 || pos[i] > pos[ret])) + ret = i; + return ret >= 0 ? pos[ret] : -1; +} + +/* convert character offset to visual position */ +int ren_pos(char *s, int off) +{ + int n = uc_slen(s); + int *pos = ren_position(s, n); + int ret = off < n ? pos[off] : 0; + free(pos); + return ret; +} + +/* convert visual position to character offset */ +int ren_off(char *s, int p) +{ + int off = -1; + int n = uc_slen(s); + int *pos = ren_position(s, n); + int i; + p = pos_prev(pos, n, p, 1); + for (i = 0; i < n; i++) + if (pos[i] == p) + off = i; + free(pos); + return off >= 0 ? off : 0; +} + +/* adjust cursor position */ +int ren_cursor(char *s, int p) +{ + int n; + int *pos; + if (!s || !p) + return 0; + n = uc_slen(s); + pos = ren_position(s, n); + p = pos_prev(pos, n, p, 1); + if (uc_code(uc_chr(s, ren_off(s, p))) == '\n') + p = pos_prev(pos, n, p, 0); + free(pos); + return p >= 0 ? p : 0; +} + +/* obtain cursor position when inserting a character before offset */ +int ren_insert(char *ln, int off) +{ + struct sbuf sb = {0}; + char *cur; + int *pos; + int ret, n; + if (off == 0) + return 0; + if (!(cur = uc_chr(ln, off - 1))) + cur = uc_chr(ln, -1); + sbuf_mem(&sb, ln, cur - ln); + sbuf_mem(&sb, cur, uc_len(cur)); + sbuf_str(&sb, cur); + n = uc_slen(sbuf_buf(&sb)); + pos = ren_position(sbuf_buf(&sb), n); + off = off > n ? n : off; + ret = off > 0 ? pos[off] - (pos[off] < pos[off - 1]) : 0; + sbuf_free(&sb); + free(pos); + return ret; +} + +/* return an offset before EOL */ +int ren_noeol(char *s, int o) +{ + int i = 0; + if (!s) + return 0; + for (; i < o && *s; i++) + s = uc_next(s); + return i > 0 && (!*s || *s == '\n') ? i - 1 : i; +} + +/* the position of the next character */ +int ren_next(char *s, int p, int dir) +{ + int n = uc_slen(s); + int *pos = ren_position(s, n); + p = pos_prev(pos, n, p, 1); + if (dir >= 0) + p = pos_next(pos, n, p, 0); + else + p = pos_prev(pos, n, p, 0); + free(pos); + return s && uc_chr(s, ren_off(s, p))[0] != '\n' ? p : -1; +} + +int ren_cwid(char *s, int pos) +{ + int wid; + if (s[0] == '\t') { + int ts = xts > 0 ? xts : 8; + return ts - (pos % ts); + } + if (mapch_get(s, &wid)) + return wid; + return uc_wid(s); +} + +char *ren_translate(char *s, char *ln) +{ + char *p = s[0] != '\t' ? mapch_get(s, NULL) : NULL; + return p || !xshape ? p : uc_shape(ln, s); +} diff --git a/Apps/Neatvi/main/Source/rset.c b/Apps/Neatvi/main/Source/rset.c new file mode 100644 index 0000000..9aa90ed --- /dev/null +++ b/Apps/Neatvi/main/Source/rset.c @@ -0,0 +1,146 @@ +#include +#include +#include +#include "regex.h" +#include "vi.h" + +/* regular expression set */ +struct rset { + regex_t regex; /* the combined regular expression */ + int n; /* number of regular expressions in this set */ + int *grp; /* the group assigned to each subgroup */ + int *setgrpcnt; /* number of groups in each regular expression */ + int grpcnt; /* group count */ +}; + +static int re_groupcount(char *s) +{ + int n = 0; /* number of groups */ + int brk = 0; /* one if inside a bracket expression */ + int brk2 = 0; /* nested bracket type: ':', '*', or '=' */ + while (*s) { + if (!brk) { + if (s[0] == '(') + n++; + if (s[0] == '\\' && s[1]) { + s++; + } else if (s[0] == '[' && s[1] && s[2]) { + s += s[1] == '^' ? 2 : 1; + brk = 1; + } + } else { + if (!brk2) { + if (s[0] == ']') + brk = 0; + if (s[0] == '[' && (s[1] == ':' || s[1] == '*' || s[1] == '=')) { + brk2 = s[1]; + s++; + } + } else if (s[0] == brk2 && s[1] == ']') { + brk2 = 0; + s++; + } + } + s++; + } + return n; +} + +struct rset *rset_make(int n, char **re, int flg) +{ + struct rset *rs = malloc(sizeof(*rs)); + struct sbuf sb = {0}; + int regex_flg = REG_EXTENDED | (flg & RE_ICASE ? REG_ICASE : 0); + int i; + memset(rs, 0, sizeof(*rs)); + rs->grp = malloc((n + 1) * sizeof(rs->grp[0])); + rs->setgrpcnt = malloc((n + 1) * sizeof(rs->setgrpcnt[0])); + rs->grpcnt = 2; + rs->n = n; + sbuf_chr(&sb, '('); + for (i = 0; i < n; i++) { + if (!re[i]) { + rs->grp[i] = -1; + rs->setgrpcnt[i] = 0; + continue; + } + if (sbuf_len(&sb) > 1) + sbuf_chr(&sb, '|'); + sbuf_chr(&sb, '('); + sbuf_str(&sb, re[i]); + sbuf_chr(&sb, ')'); + rs->grp[i] = rs->grpcnt; + rs->setgrpcnt[i] = re_groupcount(re[i]); + rs->grpcnt += 1 + rs->setgrpcnt[i]; + } + rs->grp[n] = rs->grpcnt; + sbuf_chr(&sb, ')'); + if (regcomp(&rs->regex, sbuf_buf(&sb), regex_flg)) { + free(rs->grp); + free(rs->setgrpcnt); + free(rs); + sbuf_free(&sb); + return NULL; + } + sbuf_free(&sb); + return rs; +} + +/* return the index of the matching regular expression or -1 if none matches */ +int rset_find(struct rset *rs, char *s, int n, int *grps, int flg) +{ + regmatch_t *subs; + int found, i, set = -1; + int regex_flg = REG_NEWLINE | REG_EOLSTOP; + if (rs->grpcnt <= 2) + return -1; + if (flg & RE_NOTBOL) + regex_flg |= REG_NOTBOL; + if (flg & RE_NOTEOL) + regex_flg |= REG_NOTEOL; + subs = malloc(rs->grpcnt * sizeof(subs[0])); + found = !regexec(&rs->regex, s, rs->grpcnt, subs, regex_flg); + for (i = 0; found && i < rs->n; i++) + if (rs->grp[i] >= 0 && subs[rs->grp[i]].rm_so >= 0) + set = i; + if (found && set >= 0) { + for (i = 0; i < n; i++) { + int grp = rs->grp[set] + i; + if (i < rs->setgrpcnt[set] + 1) { + grps[i * 2] = subs[grp].rm_so; + grps[i * 2 + 1] = subs[grp].rm_eo; + } else { + grps[i * 2 + 0] = -1; + grps[i * 2 + 1] = -1; + } + } + } + free(subs); + return set; +} + +void rset_free(struct rset *rs) +{ + regfree(&rs->regex); + free(rs->setgrpcnt); + free(rs->grp); + free(rs); +} + +/* read a regular expression enclosed in a delimiter */ +char *re_read(char **src) +{ + struct sbuf sb = {0}; + char *s = *src; + int delim = (unsigned char) *s++; + if (!delim) + return NULL; + while (*s && *s != delim) { + if (s[0] == '\\' && s[1]) + if (*(++s) != delim) + sbuf_chr(&sb, '\\'); + sbuf_chr(&sb, (unsigned char) *s++); + } + *src = *s ? s + 1 : s; + return sbuf_done(&sb); +} diff --git a/Apps/Neatvi/main/Source/rstr.c b/Apps/Neatvi/main/Source/rstr.c new file mode 100644 index 0000000..5f6aa09 --- /dev/null +++ b/Apps/Neatvi/main/Source/rstr.c @@ -0,0 +1,118 @@ +#include +#include +#include +#include +#include "vi.h" + +struct rstr { + struct rset *rs; /* only for regex patterns */ + char *str; /* for simple, non-regex patterns */ + int icase; /* ignore case */ + int lbeg, lend; /* match line beg/end */ + int wbeg, wend; /* match word beg/end */ +}; + +/* return zero if a simple pattern is given */ +static int rstr_simple(struct rstr *rs, char *re) +{ + char *beg; + char *end; + rs->lbeg = re[0] == '^'; + if (rs->lbeg) + re++; + rs->wbeg = re[0] == '\\' && re[1] == '<'; + if (rs->wbeg) + re += 2; + beg = re; + while (re[0] && !strchr("\\.*+?|[]{}()$", (unsigned char) re[0])) + re++; + end = re; + rs->wend = re[0] == '\\' && re[1] == '>'; + if (rs->wend) + re += 2; + rs->lend = re[0] == '$'; + if (rs->lend) + re++; + if (!re[0]) { + int len = end - beg; + rs->str = malloc(len + 1); + memcpy(rs->str, beg, len); + rs->str[len] = '\0'; + return 0; + } + return 1; +} + +struct rstr *rstr_make(char *re, int flg) +{ + struct rstr *rs = malloc(sizeof(*rs)); + memset(rs, 0, sizeof(*rs)); + rs->icase = flg & RE_ICASE; + if (rstr_simple(rs, re)) + rs->rs = rset_make(1, &re, flg); + if (!rs->rs && !rs->str) { + free(rs); + return NULL; + } + return rs; +} + +static int isword(char *s) +{ + int c = (unsigned char) s[0]; + return isalnum(c) || c == '_' || c > 127; +} + +static int match_case(char *s, char *r, int icase) +{ + for (; *r && *s; s++, r++) { + if (!icase && *s != *r) + return 1; + if (icase && tolower((unsigned char) *s) != tolower((unsigned char) *r)) + return 1; + } + return *r; +} + +/* return zero if an occurrence is found */ +int rstr_find(struct rstr *rs, char *s, int n, int *grps, int flg) +{ + int len; + char *beg, *end; + char *r; + if (rs->rs) + return rset_find(rs->rs, s, n, grps, flg); + if ((rs->lbeg && (flg & RE_NOTBOL)) || (rs->lend && (flg & RE_NOTEOL))) + return -1; + len = strlen(rs->str); + beg = s; + end = s + strlen(s) - len - 1; + if (end < beg) + return -1; + if (rs->lend) + beg = end; + if (rs->lbeg) + end = s; + for (r = beg; r <= end; r++) { + if (rs->wbeg && r > s && (isword(r - 1) || !isword(r))) + continue; + if (rs->wend && r[len] && (!isword(r + len - 1) || isword(r + len))) + continue; + if (!match_case(r, rs->str, rs->icase)) { + if (n >= 1) { + grps[0] = r - s; + grps[1] = r - s + len; + } + return 0; + } + } + return -1; +} + +void rstr_free(struct rstr *rs) +{ + if (rs->rs) + rset_free(rs->rs); + free(rs->str); + free(rs); +} diff --git a/Apps/Neatvi/main/Source/sbuf.c b/Apps/Neatvi/main/Source/sbuf.c new file mode 100644 index 0000000..08dee20 --- /dev/null +++ b/Apps/Neatvi/main/Source/sbuf.c @@ -0,0 +1,95 @@ +/* variable length string buffer */ +#include +#include +#include +#include +#include "vi.h" + +#define SBUFSZ 128 +#define ALIGN(n, a) (((n) + (a) - 1) & ~((a) - 1)) +#define NEXTSZ(o, r) ALIGN(MAX((o) * 2, (o) + (r)), SBUFSZ) + +static int sbuf_extend(struct sbuf *sbuf, long newsz) +{ + char *s; + if (sbuf->s && !sbuf->owns) + return 1; + if (!(s = malloc(newsz))) + return 1; + if (sbuf->s_n) + memcpy(s, sbuf->s, sbuf->s_n); + free(sbuf->s); + sbuf->s_sz = newsz; + sbuf->s = s; + sbuf->owns = 1; + return 0; +} + +char *sbuf_buf(struct sbuf *sb) +{ + if (!sb->s && sbuf_extend(sb, 1)) + return NULL; + sb->s[sb->s_n] = '\0'; + return sb->s; +} + +char *sbuf_done(struct sbuf *sb) +{ + char *res = sbuf_buf(sb); + memset(sb, 0, sizeof(*sb)); + return res; +} + +void sbuf_free(struct sbuf *sb) +{ + if (sb->owns) + free(sb->s); + memset(sb, 0, sizeof(*sb)); +} + +int sbuf_chr(struct sbuf *sbuf, int c) +{ + if (sbuf->s_n + 2 >= sbuf->s_sz) { + if (sbuf_extend(sbuf, NEXTSZ(sbuf->s_sz, 1))) + return 1; + } + sbuf->s[sbuf->s_n++] = c; + return 0; +} + +int sbuf_mem(struct sbuf *sbuf, void *s, long len) +{ + if (sbuf->s_n + len + 1 >= sbuf->s_sz) { + if (sbuf_extend(sbuf, NEXTSZ(sbuf->s_sz, len + 1))) + return 1; + } + memcpy(sbuf->s + sbuf->s_n, s, len); + sbuf->s_n += len; + return 0; +} + +int sbuf_str(struct sbuf *sbuf, char *s) +{ + return sbuf_mem(sbuf, s, strlen(s)); +} + +long sbuf_len(struct sbuf *sbuf) +{ + return sbuf->s_n; +} + +void sbuf_cut(struct sbuf *sb, long len) +{ + if (sb->s_n > len) + sb->s_n = len; +} + +int sbuf_printf(struct sbuf *sbuf, char *s, ...) +{ + char buf[256]; + va_list ap; + va_start(ap, s); + vsnprintf(buf, sizeof(buf), s, ap); + va_end(ap); + return sbuf_str(sbuf, buf); +} diff --git a/Apps/Neatvi/main/Source/syn.c b/Apps/Neatvi/main/Source/syn.c new file mode 100644 index 0000000..cec44ab --- /dev/null +++ b/Apps/Neatvi/main/Source/syn.c @@ -0,0 +1,145 @@ +#include +#include +#include +#include "vi.h" + +#define NFTS 32 + +/* mapping filetypes to regular expression sets */ +static struct ftmap { + char ft[32]; + struct rset *rs; +} ftmap[NFTS]; + +static struct rset *syn_ftrs; +static int syn_ctx1, syn_ctx2; + +static struct rset *syn_find(char *ft) +{ + int i; + for (i = 0; i < LEN(ftmap); i++) + if (!strcmp(ft, ftmap[i].ft)) + return ftmap[i].rs; + return NULL; +} + +static struct rset *syn_make(char *name) +{ + char *pats[256] = {NULL}; + char *ft, *pat; + int i; + int n = 0; + if (name == NULL || !name[0]) + return NULL; + for (i = 0; !conf_highlight(i, &ft, NULL, &pat, NULL) && i < LEN(pats); i++) + if (!strcmp(ft, name)) + pats[i] = pat; + n = i; + for (i = 0; i < LEN(ftmap); i++) { + if (!ftmap[i].ft[0]) { + strcpy(ftmap[i].ft, name); + ftmap[i].rs = rset_make(n, pats, 0); + return ftmap[i].rs; + } + } + return NULL; +} + +int syn_merge(int old, int new) +{ + int fg = SYN_FGSET(new) ? SYN_FG(new) : SYN_FG(old); + int bg = SYN_BGSET(new) ? SYN_BG(new) : SYN_BG(old); + if (SYN_RANK(old) > SYN_RANK(new)) + return syn_merge(new, old); + return ((old | new) & SYN_FLG) | (bg << 8) | fg; +} + +void syn_context(int ctx1, int ctx2) +{ + syn_ctx1 = conf_hl(ctx1); + syn_ctx2 = conf_hl(ctx2); +} + +int *syn_highlight(char *ft, char *s) +{ + int subs[16 * 2]; + int n = uc_slen(s); + int *att = malloc(n * sizeof(att[0])); + int soff = 0; + struct rset *rs = syn_find(ft); + int flg = 0; + int hl, j, i; + if (!strcmp(ft, "___")) { + for (i = 0; i < n; i++) + att[i] = SYN_RV; + return att; + } + for (i = 0; i < n; i++) + att[i] = syn_ctx1; + if (conf_hl('&')) { + char *r = s; + for (i = 0; i < n; i++) { + if (mapch_get(r, NULL)) + att[i] = syn_merge(att[i], conf_hl('&')); + r = uc_next(r); + } + } + if (syn_ctx2) { + for (i = 0; i < n; i++) + att[i] = syn_merge(att[i], syn_ctx2); + } + if (!rs) + rs = syn_make(ft); + if (!rs) + return att; + while ((hl = rset_find(rs, s + soff, LEN(subs) / 2, subs, flg)) >= 0) { + int sidx = uc_off(s, soff); + int grp = 0; + int cend = 1; + int *catt; + conf_highlight(hl, NULL, &catt, NULL, &grp); + for (i = 0; i < LEN(subs) / 2; i++) { + if (subs[i * 2] >= 0) { + int o1 = subs[i * 2 + 0]; + int o2 = subs[i * 2 + 1]; + int beg = sidx + uc_off(s + soff, o1); + int end = beg + uc_off(s + soff + o1, o2 - o1); + for (j = beg; j < end; j++) + att[j] = syn_merge(att[j], conf_hl(catt[i])); + if (i == grp) + cend = MAX(cend, o2); + } + } + soff += cend; + flg = RE_NOTBOL; + } + return att; +} + +char *syn_filetype(char *path) +{ + int hl = rset_find(syn_ftrs, path, 0, NULL, 0); + char *ft; + if (!conf_filetype(hl, &ft, NULL)) + return ft; + return ""; +} + +void syn_init(void) +{ + char *pats[128] = {NULL}; + char *pat; + int i; + for (i = 0; !conf_filetype(i, NULL, &pat) && i < LEN(pats); i++) + pats[i] = pat; + syn_ftrs = rset_make(i, pats, 0); +} + +void syn_done(void) +{ + int i; + for (i = 0; i < LEN(ftmap); i++) + if (ftmap[i].rs) + rset_free(ftmap[i].rs); + rset_free(syn_ftrs); +} diff --git a/Apps/Neatvi/main/Source/tactility.c b/Apps/Neatvi/main/Source/tactility.c new file mode 100644 index 0000000..4c82c57 --- /dev/null +++ b/Apps/Neatvi/main/Source/tactility.c @@ -0,0 +1,54 @@ +/* + * Tactility replacements for neatvi's cmd.c and lsp.c: both start other processes (fork/exec), + * which Tactility doesn't have. Shell commands (:!, filters, pipes) and LSP support report failure. + */ +#include +#include "vi.h" + +char *cmd_pipe(char *cmd, char *ibuf, int oproc) +{ + return NULL; +} + +char *cmd_unix(char *path, char *ibuf) +{ + return NULL; +} + +int cmd_exec(char *cmd) +{ + return 1; +} + +int lsp_init(char *cmd[]) +{ + return 1; +} + +void lsp_done(void) +{ +} + +int lsp_on(void) +{ + return 0; +} + +void lsp_modified(char *path, char *ft) +{ +} + +int lsp_definition(char *path, int row, int off, char *ft, char *dst, int dstlen, int *drow, int *doff) +{ + return 1; +} + +char *lsp_find(char *path, int row, int off, char *ft) +{ + return NULL; +} + +char *lsp_hover(char *path, int row, int off, char *ft) +{ + return NULL; +} diff --git a/Apps/Neatvi/main/Source/tag.c b/Apps/Neatvi/main/Source/tag.c new file mode 100644 index 0000000..b71bd21 --- /dev/null +++ b/Apps/Neatvi/main/Source/tag.c @@ -0,0 +1,340 @@ +#include +#include +#include +#include +#include +#include +#include +#include "vi.h" + +static char *tagpath; +static char *tag; +static long taglen; + +int tag_init(void) +{ + return 0; +} + +static int tag_load(void) +{ + char buf[1 << 10]; + struct sbuf sb = {0}; + long nr; + int fd; + if (tagpath != NULL) + return tag == NULL; + tagpath = getenv("TAGPATH") ? getenv("TAGPATH") : "tags"; + if ((fd = open(tagpath, O_RDONLY)) < 0) + return 1; + while ((nr = read(fd, buf, sizeof(buf))) > 0) + sbuf_mem(&sb, buf, nr); + close(fd); + taglen = sbuf_len(&sb); + tag = sbuf_done(&sb); + return 0; +} + +void tag_done(void) +{ + free(tag); + tag = NULL; + tagpath = NULL; +} + +static char *copypart(char *dst, int dstlen, char *src) +{ + char *end = src; + int len = dstlen - 1; + while (*end && *end != '\t' && *end != '\n') + end++; + if (end - src < len) + len = end - src; + if (dst != NULL && dstlen > 0) { + memcpy(dst, src, len); + dst[len] = '\0'; + } + return *end ? end + 1 : end; +} + +static char *tag_next(char *s, int dir) +{ + if (dir >= 0 && *s) { + if ((s = strchr(s + 1, '\n')) != NULL) + return s + 1; + } + if (dir < 0 && s > tag) { + s--; + while (s > tag && s[-1] != '\n') + s--; + return s; + } + return NULL; +} + +int tag_find(char *name, int *pos, int dir, char *path, int pathlen, char *cmd, int cmdlen) +{ + char *s; + int len = strlen(name); + if (tag_load() != 0) + return 1; + if (*pos >= taglen) + *pos = 0; + s = dir != 0 ? tag_next(tag + *pos, dir) : tag + *pos; + while (s) { + if (!strncmp(name, s, len) && s[len] == '\t') { + char *r = copypart(path, pathlen, s + len + 1); + copypart(cmd, cmdlen, r); + *pos = s - tag; + return 0; + } + s = tag_next(s, dir); + } + return 1; +} + +struct tlist { + char **ls; + char *mark; + char *raw; + int ls_n; + int ls_sz; +}; + +struct tlist *tlist_make(char *ls[], int ls_n) +{ + struct tlist *tls = malloc(sizeof(*tls)); + memset(tls, 0, sizeof(*tls)); + tls->ls = ls; + tls->ls_n = ls_n; + tls->ls_sz = 0; + return tls; +} + +static int tlist_put(struct tlist *tls, char *item) +{ + if (tls->ls_n >= tls->ls_sz) { + char **new; + int ls_sz = tls->ls_sz + 256; + if (!(new = malloc(ls_sz * sizeof(tls->ls[0])))) + return 1; + memcpy(new, tls->ls, tls->ls_n * sizeof(tls->ls[0])); + free(tls->ls); + tls->ls_sz = ls_sz; + tls->ls = new; + } + tls->ls[tls->ls_n++] = item; + return 0; +} + +struct tlist *tlist_from(char *path) +{ + struct tlist *tls; + char buf[1024]; + long nr; + char *s; + struct sbuf sb = {0}; + int fd = open(path, O_RDONLY); + if (fd < 0) + return NULL; + tls = tlist_make(NULL, 0); + while (sbuf_len(&sb) < (1 << 20) && (nr = read(fd, buf, sizeof(buf))) > 0) + sbuf_mem(&sb, buf, nr); + close(fd); + tls->raw = sbuf_done(&sb); + for (s = tls->raw; s && *s;) { + char *r = strchr(s, '\n'); + if (r && s[0] != '#' && !isspace((unsigned char) s[0])) + tlist_put(tls, s); + if (r) + *r++ = '\0'; + s = r; + } + return tls; +} + +struct tlist *tlist_str(char *str) +{ + struct tlist *tls; + char *s; + if (!str || !*str) + return NULL; + tls = tlist_make(NULL, 0); + tls->raw = uc_dup(str); + for (s = tls->raw; s && *s;) { + char *r = strchr(s, '\n'); + if (r && s[0] != '#' && !isspace((unsigned char) s[0])) + tlist_put(tls, s); + if (r) + *r++ = '\0'; + s = r; + } + return tls; +} + +struct tlist *tlist_tags(char *path) +{ + struct tlist *tls; + char buf[1024]; + long nr; + char *s; + struct sbuf sb = {0}; + int fd = open(path, O_RDONLY); + if (fd < 0) + return NULL; + tls = tlist_make(NULL, 0); + while (sbuf_len(&sb) < (1 << 20) && (nr = read(fd, buf, sizeof(buf))) > 0) + sbuf_mem(&sb, buf, nr); + close(fd); + tls->raw = sbuf_done(&sb); + for (s = tls->raw; s && *s;) { + char *r = strchr(s, '\n'); + char *t1 = s ? memchr(s, '\t', r - s) : NULL; + char *t2 = t1 ? memchr(t1 + 1, '\t', r - t1 - 1) : NULL; + if (r && s[0] != '#' && !isspace((unsigned char) s[0])) + tlist_put(tls, s); + if (t2) + *t2 = '\0'; + if (r) + *r++ = '\0'; + s = r; + } + return tls; +} + +void tlist_free(struct tlist *tls) +{ + if (tls->ls_sz) + free(tls->ls); + free(tls->raw); + free(tls->mark); + free(tls); +} + +void tlist_filt(struct tlist *tls, char *kw) +{ + int i; + if (!tls->mark) { + if (!(tls->mark = malloc(tls->ls_n * sizeof(tls->mark[0])))) + return; + memset(tls->mark, 1, tls->ls_n * sizeof(tls->mark[0])); + } + if (!kw) + memset(tls->mark, 1, tls->ls_n * sizeof(tls->mark[0])); + for (i = 0; i < tls->ls_n; i++) + if (kw && tls->mark[i] && !strstr(tls->ls[i], kw)) + tls->mark[i] = 0; +} + +int tlist_cnt(struct tlist *tls) +{ + return tls->ls_n; +} + +int tlist_matches(struct tlist *tls) +{ + int i, cnt = 0; + for (i = 0; i < tls->ls_n; i++) + if (!tls->mark || tls->mark[i]) + cnt++; + return cnt; +} + +char *tlist_get(struct tlist *tls, int idx) +{ + return idx < tls->ls_n ? tls->ls[idx] : NULL; +} + +int tlist_top(struct tlist *tls, int *view, int view_sz) +{ + int view_n = 0; + int i; + for (i = 0; i < tls->ls_n && view_n < view_sz; i++) + if (!tls->mark || tls->mark[i]) + view[view_n++] = i; + return view_n; +} + +static long qfix_pos; /* offset in qfix buffer; -1 implies before the beginning */ + +static int qfix_readln(char *ln, char *dst, int dstlen, int *row, int *off, char *txt, int txtlen) +{ + char *c1, *c2, *c3; + char *eol = strchr(ln, '\n'); + int len; + if (strchr("# \t:", (unsigned char) ln[0]) || !ln) + return 1; + if (!(c1 = memchr(ln, ':', eol - ln)) || c1[1] < '0' || c1[1] > '9') + return 1; + c2 = c1 + 1; + while (isdigit((unsigned char) *c2)) + c2++; + if (*c2 != ':') + return 1; + c3 = c2 + 1; + while (isdigit((unsigned char) *c3)) + c3++; + len = MIN(c1 - ln, dstlen - 1); + if (dst) { + memcpy(dst, ln, len); + dst[len] = '\0'; + } + if (row) + *row = atoi(c1 + 1) - 1; + if (off) + *off = *c3 == ':' ? MAX(1, atoi(c2 + 1)) - 1 : 0; + if (txt && txtlen > 0) { + char *beg = (*c3 == ':' ? c3 : c2) + 1; + while (*beg == ' ' || *beg == '\t') + beg++; + len = MIN(eol - beg, txtlen - 1); + memcpy(txt, beg, len); + txt[len] = '\0'; + } + return 0; +} + +int qfix_current(char *dst, int dstlen, int *row, int *off, char *txt, int txtlen) +{ + char *qfix = reg_get('*', NULL); + if (!qfix || !*qfix || qfix_pos >= (signed long) strlen(qfix)) + return 1; + if (qfix_pos < 0 && qfix_next()) + return 1; + return qfix_readln(qfix + qfix_pos, dst, dstlen, row, off, txt, txtlen); +} + +int qfix_next(void) +{ + char *qfix = reg_get('*', NULL); + char *eol; + if (!qfix || !*qfix || qfix_pos >= (signed long) strlen(qfix)) + return 1; + while ((eol = qfix_pos >= 0 ? strchr(qfix + qfix_pos, '\n') : qfix - 1)) { + qfix_pos = eol + 1 - qfix; + if (!qfix_readln(qfix + qfix_pos, NULL, 0, NULL, NULL, NULL, 0)) + return 0; + } + return !eol || !eol[1]; +} + +int qfix_prev(void) +{ + char *qfix = reg_get('*', NULL); + if (!qfix || !*qfix || qfix_pos > (signed long) strlen(qfix)) + return 1; + while (qfix_pos > 0) { + qfix_pos--; + while (qfix_pos > 0 && qfix[qfix_pos - 1] != '\n') + qfix_pos--; + if (!qfix_readln(qfix + qfix_pos, NULL, 0, NULL, NULL, NULL, 0)) + return 0; + } + qfix_pos = -1; + return 1; +} + +void qfix_reset(void) +{ + qfix_pos = -1; +} diff --git a/Apps/Neatvi/main/Source/term.c b/Apps/Neatvi/main/Source/term.c new file mode 100644 index 0000000..9bb855c --- /dev/null +++ b/Apps/Neatvi/main/Source/term.c @@ -0,0 +1,232 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include "vi.h" + +static struct sbuf term_sbuf; /* output buffer if not NULL */ +static int rows, cols; /* number of terminal rows and columns */ +static int win_top, win_rows; /* active window rows */ +static int win_left, win_cols; /* active window columns */ +static struct termios termios; + +void term_init(void) +{ + struct winsize win; + struct termios newtermios; + tcgetattr(0, &termios); + newtermios = termios; + newtermios.c_lflag &= ~(ICANON | ISIG); + newtermios.c_lflag &= ~ECHO; + tcsetattr(0, TCSAFLUSH, &newtermios); + if (getenv("LINES")) + rows = atoi(getenv("LINES")); + if (getenv("COLUMNS")) + cols = atoi(getenv("COLUMNS")); + if (!ioctl(0, TIOCGWINSZ, &win)) { + cols = win.ws_col; + rows = win.ws_row; + } + cols = cols ? cols : 80; + rows = rows ? rows : 25; + term_str("\33[m"); + term_window(win_top, win_rows > 0 ? win_rows : rows); +} + +void term_window(int row, int cnt) +{ + char cmd[64]; + win_top = row; + win_rows = cnt; + win_left = 0; + win_cols = cols; + if (row == 0 && win_rows == rows) { + term_str("\33[r"); + } else { + sprintf(cmd, "\33[%d;%dr", win_top + 1, win_top + win_rows); + term_str(cmd); + } +} + +void term_done(void) +{ + term_str("\33[r"); + term_pos(rows - 1, 0); + term_kill(); + term_commit(); + sbuf_free(&term_sbuf); + tcsetattr(0, 0, &termios); +} + +void term_suspend(void) +{ + term_done(); + kill(0, SIGSTOP); + term_init(); +} + +static long write_fully(int fd, void *buf, long sz) +{ + long nw = 0, nc = 0; + while (nw < sz && (nc = write(fd, buf + nw, sz - nw)) >= 0) + nw += nc; + return nc >= 0 ? nw : -1; +} + +void term_commit(void) +{ + write_fully(1, sbuf_buf(&term_sbuf), sbuf_len(&term_sbuf)); + sbuf_cut(&term_sbuf, 0); +} + +void term_str(char *s) +{ + sbuf_str(&term_sbuf, s); +} + +void term_chr(int ch) +{ + char s[4] = {ch}; + term_str(s); +} + +void term_kill(void) +{ + term_str("\33[K"); +} + +void term_room(int n) +{ + char cmd[16]; + if (n < 0) + sprintf(cmd, "\33[%dM", -n); + if (n > 0) + sprintf(cmd, "\33[%dL", n); + if (n) + term_str(cmd); +} + +void term_pos(int r, int c) +{ + char buf[32]; + if (c < 0) + c = 0; + if (c >= term_cols()) + c = win_cols - 1; + if (r < 0) + sprintf(buf, "\33[%dG", win_left + c + 1); + else + sprintf(buf, "\33[%d;%dH", win_top + r + 1, win_left + c + 1); + term_str(buf); +} + +int term_rowx(void) +{ + return rows; +} + +int term_rows(void) +{ + return win_rows; +} + +int term_cols(void) +{ + return win_cols; +} + +static char istd[1024]; /* characters read from stdin */ +static char ibuf[4096]; /* buffered characters (term_push) */ +static char icmd[4096]; /* characters returned since the last term_cmd() */ +static int istd_pos, istd_cnt; /* istd[] position and length */ +static int ibuf_pos, ibuf_cnt; /* ibuf[] position and length */ +static int icmd_pos; /* icmd[] position */ + +/* read s before reading from the terminal */ +void term_push(char *s, int n) +{ + int cur = ibuf_cnt - ibuf_pos; + n = MIN(n, sizeof(ibuf) - cur); + memmove(ibuf + n, ibuf + ibuf_pos, cur); + memcpy(ibuf, s, n); + ibuf_pos = 0; + ibuf_cnt = cur + n; +} + +/* drop all characters pushed via term_push() */ +void term_pushstop(void) +{ + ibuf_pos = ibuf_cnt; +} + +/* return a static buffer containing inputs read since the last term_cmd() */ +char *term_cmd(int *n) +{ + *n = icmd_pos; + icmd_pos = 0; + return icmd; +} + +int term_read(int buffered) +{ + struct pollfd ufds[1]; + int n, c; + if (!buffered && ibuf_pos >= ibuf_cnt && istd_pos >= istd_cnt) { + ufds[0].fd = 0; + ufds[0].events = POLLIN; + if (poll(ufds, 1, -1) <= 0) + return -1; + if ((n = read(0, istd, sizeof(istd))) <= 0) + return -1; + istd_cnt = n; + istd_pos = 0; + } + if (ibuf_pos < ibuf_cnt) + c = (unsigned char) ibuf[ibuf_pos++]; + else + c = istd_pos < istd_cnt ? (unsigned char) istd[istd_pos++] : -1; + if (icmd_pos < sizeof(icmd) && c >= 0) + icmd[icmd_pos++] = c; + return c; +} + +/* return a static string that changes text attributes from old to att */ +char *term_seqattr(int att, int old) +{ + static char buf[128]; + char *s = buf; + int fg = SYN_FG(att); + int bg = SYN_BG(att); + if (att == old) + return ""; + s += sprintf(s, "\33["); + if (att & SYN_BD) + s += sprintf(s, ";1"); + if (att & SYN_IT) + s += sprintf(s, ";3"); + if (att & SYN_RV) + s += sprintf(s, ";7"); + if (SYN_FGSET(att)) { + if ((fg & 0xff) < 8) + s += sprintf(s, ";%d", 30 + (fg & 0xff)); + else + s += sprintf(s, ";38;5;%d", (fg & 0xff)); + } + if (SYN_BGSET(att)) { + if ((bg & 0xff) < 8) + s += sprintf(s, ";%d", 40 + (bg & 0xff)); + else + s += sprintf(s, ";48;5;%d", (bg & 0xff)); + } + s += sprintf(s, "m"); + return buf; +} + +char *term_seqkill(void) +{ + return "\33[K"; +} diff --git a/Apps/Neatvi/main/Source/uc.c b/Apps/Neatvi/main/Source/uc.c new file mode 100644 index 0000000..8352330 --- /dev/null +++ b/Apps/Neatvi/main/Source/uc.c @@ -0,0 +1,644 @@ +#include +#include +#include +#include +#include "vi.h" + +#define LEN(a) (sizeof(a) / sizeof((a)[0])) + +/* return the length of a utf-8 character */ +int uc_len(char *s) +{ + int c = (unsigned char) s[0]; + if (~c & 0xc0 || !s[1]) /* ASCII or invalid */ + return c > 0; + if (~c & 0x20 || !s[2]) + return 2; + if (~c & 0x10 || !s[3]) + return 3; + if (~c & 0x08) + return 4; + return 1; +} + +/* return the expected length of a utf-8 character */ +int uc_len_expect(char c) +{ + if (~c & 0xc0) /* ASCII or invalid */ + return c > 0; + if (~c & 0x20) + return 2; + if (~c & 0x10) + return 3; + if (~c & 0x08) + return 4; + return 1; +} + +/* the unicode codepoint of the given utf-8 character */ +int uc_code(char *s) +{ + int c = (unsigned char) s[0]; + if (~c & 0xc0 || !s[1]) /* ASCII or invalid */ + return c; + if (~c & 0x20 || !s[2]) + return ((c & 0x1f) << 6) | (s[1] & 0x3f); + if (~c & 0x10 || !s[3]) + return ((c & 0x0f) << 12) | ((s[1] & 0x3f) << 6) | (s[2] & 0x3f); + if (~c & 0x08) + return ((c & 0x07) << 18) | ((s[1] & 0x3f) << 12) | ((s[2] & 0x3f) << 6) | (s[3] & 0x3f); + return c; +} + +/* find the beginning of the character at s[i] */ +char *uc_beg(char *beg, char *s) +{ + while (s > beg && (((unsigned char) *s) & 0xc0) == 0x80) + s--; + return s; +} + +/* return a pointer to the character following s */ +char *uc_next(char *s) +{ + int l = uc_len(s); + return l > 0 ? s + l : s; +} + +/* return a pointer to the character preceding s */ +char *uc_prev(char *beg, char *s) +{ + return s == beg ? beg : uc_beg(beg, s - 1); +} + +/* the number of utf-8 characters in s */ +int uc_slen(char *s) +{ + int n; + for (n = 0; *s; n++) + s += uc_len(s); + return n; +} + +char *uc_lastline(char *s) +{ + char *r = strrchr(s, '\n'); + return r ? r + 1 : s; +} + +/* allocate and return an array for the characters in s */ +char **uc_chop(char *s, int *n) +{ + char **chrs; + int i; + *n = uc_slen(s); + chrs = malloc((*n + 1) * sizeof(chrs[0])); + for (i = 0; i < *n + 1; i++) { + chrs[i] = s; + s = uc_next(s); + } + return chrs; +} + +char *uc_chr(char *s, int off) +{ + int i = 0; + while (s && *s) { + if (i++ == off) + return s; + s = uc_next(s); + } + return s && (off < 0 || i == off) ? s : NULL; +} + +/* the number of characters between s and s + off */ +int uc_off(char *s, int off) +{ + char *e = s + off; + int i; + for (i = 0; s < e && *s; i++) + s = uc_next(s); + return i; +} + +char *uc_sub(char *s, int beg, int end) +{ + char *sbeg = uc_chr(s, beg); + char *send = uc_chr(s, end); + int len = sbeg && send && sbeg <= send ? send - sbeg : 0; + char *r = malloc(len + 1); + if (len > 0) + memcpy(r, sbeg, len); + r[len] = '\0'; + return r; +} + +char *uc_dup(char *s) +{ + char *r = malloc(strlen(s) + 1); + return r ? strcpy(r, s) : NULL; +} + +char *uc_cat(char *s, char *r) +{ + int slen = strlen(s); + int rlen = strlen(r); + char *o = malloc(slen + rlen + 1); + memcpy(o, s, slen); + memcpy(o + slen, r, rlen); + o[slen + rlen] = '\0'; + return o; +} + +int uc_isspace(char *s) +{ + int c = s ? (unsigned char) *s : 0; + return c <= 0x7f && isspace(c); +} + +int uc_isprint(char *s) +{ + int c = s ? (unsigned char) *s : 0; + return c > 0x7f || isprint(c); +} + +int uc_isalpha(char *s) +{ + int c = s ? (unsigned char) *s : 0; + return c > 0x7f || isalpha(c); +} + +int uc_isdigit(char *s) +{ + int c = s ? (unsigned char) *s : 0; + return c <= 0x7f && isdigit(c); +} + +int uc_kind(char *c) +{ + if (uc_isspace(c)) + return 0; + if (uc_isalpha(c) || uc_isdigit(c) || c[0] == '_') + return 1; + return 2; +} + +#define UC_R2L(ch) (((ch) & 0xff00) == 0x0600 || \ + ((ch) & 0xfffc) == 0x200c || \ + ((ch) & 0xff00) == 0xfb00 || \ + ((ch) & 0xff00) == 0xfc00 || \ + ((ch) & 0xff00) == 0xfe00) + +/* sorted list of characters that can be shaped */ +static struct achar { + unsigned c; /* utf-8 code */ + unsigned s; /* single form */ + unsigned i; /* initial form */ + unsigned m; /* medial form */ + unsigned f; /* final form */ +} achars[] = { + {0x0621, 0xfe80}, /* hamza */ + {0x0622, 0xfe81, 0, 0, 0xfe82}, /* alef madda */ + {0x0623, 0xfe83, 0, 0, 0xfe84}, /* alef hamza above */ + {0x0624, 0xfe85, 0, 0, 0xfe86}, /* waw hamza */ + {0x0625, 0xfe87, 0, 0, 0xfe88}, /* alef hamza below */ + {0x0626, 0xfe89, 0xfe8b, 0xfe8c, 0xfe8a}, /* yeh hamza */ + {0x0627, 0xfe8d, 0, 0, 0xfe8e}, /* alef */ + {0x0628, 0xfe8f, 0xfe91, 0xfe92, 0xfe90}, /* beh */ + {0x0629, 0xfe93, 0, 0, 0xfe94}, /* teh marbuta */ + {0x062a, 0xfe95, 0xfe97, 0xfe98, 0xfe96}, /* teh */ + {0x062b, 0xfe99, 0xfe9b, 0xfe9c, 0xfe9a}, /* theh */ + {0x062c, 0xfe9d, 0xfe9f, 0xfea0, 0xfe9e}, /* jeem */ + {0x062d, 0xfea1, 0xfea3, 0xfea4, 0xfea2}, /* hah */ + {0x062e, 0xfea5, 0xfea7, 0xfea8, 0xfea6}, /* khah */ + {0x062f, 0xfea9, 0, 0, 0xfeaa}, /* dal */ + {0x0630, 0xfeab, 0, 0, 0xfeac}, /* thal */ + {0x0631, 0xfead, 0, 0, 0xfeae}, /* reh */ + {0x0632, 0xfeaf, 0, 0, 0xfeb0}, /* zain */ + {0x0633, 0xfeb1, 0xfeb3, 0xfeb4, 0xfeb2}, /* seen */ + {0x0634, 0xfeb5, 0xfeb7, 0xfeb8, 0xfeb6}, /* sheen */ + {0x0635, 0xfeb9, 0xfebb, 0xfebc, 0xfeba}, /* sad */ + {0x0636, 0xfebd, 0xfebf, 0xfec0, 0xfebe}, /* dad */ + {0x0637, 0xfec1, 0xfec3, 0xfec4, 0xfec2}, /* tah */ + {0x0638, 0xfec5, 0xfec7, 0xfec8, 0xfec6}, /* zah */ + {0x0639, 0xfec9, 0xfecb, 0xfecc, 0xfeca}, /* ain */ + {0x063a, 0xfecd, 0xfecf, 0xfed0, 0xfece}, /* ghain */ + {0x0640, 0x640, 0x640, 0x640}, /* tatweel */ + {0x0641, 0xfed1, 0xfed3, 0xfed4, 0xfed2}, /* feh */ + {0x0642, 0xfed5, 0xfed7, 0xfed8, 0xfed6}, /* qaf */ + {0x0643, 0xfed9, 0xfedb, 0xfedc, 0xfeda}, /* kaf */ + {0x0644, 0xfedd, 0xfedf, 0xfee0, 0xfede}, /* lam */ + {0x0645, 0xfee1, 0xfee3, 0xfee4, 0xfee2}, /* meem */ + {0x0646, 0xfee5, 0xfee7, 0xfee8, 0xfee6}, /* noon */ + {0x0647, 0xfee9, 0xfeeb, 0xfeec, 0xfeea}, /* heh */ + {0x0648, 0xfeed, 0, 0, 0xfeee}, /* waw */ + {0x0649, 0xfeef, 0, 0, 0xfef0}, /* alef maksura */ + {0x064a, 0xfef1, 0xfef3, 0xfef4, 0xfef2}, /* yeh */ + {0x067e, 0xfb56, 0xfb58, 0xfb59, 0xfb57}, /* peh */ + {0x0686, 0xfb7a, 0xfb7c, 0xfb7d, 0xfb7b}, /* tcheh */ + {0x0698, 0xfb8a, 0, 0, 0xfb8b}, /* jeh */ + {0x06a9, 0xfb8e, 0xfb90, 0xfb91, 0xfb8f}, /* fkaf */ + {0x06af, 0xfb92, 0xfb94, 0xfb95, 0xfb93}, /* gaf */ + {0x06c0, 0xfba4, 0, 0, 0xfba5}, /* heh with yeh above */ + {0x06cc, 0xfbfc, 0xfbfe, 0xfbff, 0xfbfd}, /* fyeh */ + {0x200c}, /* ZWNJ */ + {0x200d, 0, 0x200d, 0x200d}, /* ZWJ */ +}; + +static struct achar *find_achar(int c) +{ + int h, m, l; + h = LEN(achars); + l = 0; + /* using binary search to find c */ + while (l < h) { + m = (h + l) >> 1; + if (achars[m].c == c) + return &achars[m]; + if (c < achars[m].c) + h = m; + else + l = m + 1; + } + return NULL; +} + +static int can_join(int c1, int c2) +{ + struct achar *a1 = find_achar(c1); + struct achar *a2 = find_achar(c2); + return a1 && a2 && (a1->i || a1->m) && (a2->f || a2->m); +} + +static int uc_cshape(int cur, int prev, int next) +{ + int c = cur; + int join_prev, join_next; + struct achar *ac = find_achar(c); + if (!ac) /* ignore non-Arabic characters */ + return c; + join_prev = can_join(prev, c); + join_next = can_join(c, next); + if (join_prev && join_next) + c = ac->m; + if (join_prev && !join_next) + c = ac->f; + if (!join_prev && join_next) + c = ac->i; + if (!join_prev && !join_next) + c = ac->c; /* some fonts do not have a glyph for ac->s */ + return c ? c : cur; +} + +/* + * return nonzero for Arabic combining characters + * + * The standard Arabic diacritics: + * + 0x064b: fathatan + * + 0x064c: dammatan + * + 0x064d: kasratan + * + 0x064e: fatha + * + 0x064f: damma + * + 0x0650: kasra + * + 0x0651: shadda + * + 0x0652: sukun + * + 0x0653: madda above + * + 0x0654: hamza above + * + 0x0655: hamza below + * + 0x0670: superscript alef + */ +static int uc_acomb(int c) +{ + return (c >= 0x064b && c <= 0x0655) || /* the standard diacritics */ + (c >= 0xfc5e && c <= 0xfc63) || /* shadda ligatures */ + c == 0x0670; /* superscript alef */ +} + +static void uc_cput(char *d, int c) +{ + int l = 0; + if (c > 0xffff) { + *d++ = 0xf0 | (c >> 18); + l = 3; + } else if (c > 0x7ff) { + *d++ = 0xe0 | (c >> 12); + l = 2; + } else if (c > 0x7f) { + *d++ = 0xc0 | (c >> 6); + l = 1; + } else { + *d++ = c; + } + while (l--) + *d++ = 0x80 | ((c >> (l * 6)) & 0x3f); + *d = '\0'; +} + +/* shape the given arabic character; returns a static buffer */ +char *uc_shape(char *beg, char *s) +{ + static char out[16]; + char *r; + int prev = 0; + int next = 0; + int curr = uc_code(s); + if (!curr || !UC_R2L(curr)) + return NULL; + r = s; + while (r > beg) { + r = uc_beg(beg, r - 1); + if (!uc_acomb(uc_code(r))) { + prev = uc_code(r); + break; + } + } + r = s; + while (*r) { + r = uc_next(r); + if (!uc_acomb(uc_code(r))) { + next = uc_code(r); + break; + } + } + uc_cput(out, uc_cshape(curr, prev, next)); + return out; +} + +static int dwchars[][2] = { + {0x1100, 0x115f}, {0x11a3, 0x11a7}, {0x11fa, 0x11ff}, {0x2329, 0x232a}, + {0x2e80, 0x2e99}, {0x2e9b, 0x2ef3}, {0x2f00, 0x2fd5}, {0x2ff0, 0x2ffb}, + {0x3000, 0x3029}, {0x3030, 0x303e}, {0x3041, 0x3096}, {0x309b, 0x30ff}, + {0x3105, 0x312d}, {0x3131, 0x318e}, {0x3190, 0x31b7}, {0x31c0, 0x31e3}, + {0x31f0, 0x321e}, {0x3220, 0x3247}, {0x3250, 0x32fe}, {0x3300, 0x4dbf}, + {0x4e00, 0xa48c}, {0xa490, 0xa4c6}, {0xa960, 0xa97c}, {0xac00, 0xd7a3}, + {0xd7b0, 0xd7c6}, {0xd7cb, 0xd7fb}, {0xf900, 0xfaff}, {0xfe10, 0xfe19}, + {0xfe30, 0xfe52}, {0xfe54, 0xfe66}, {0xfe68, 0xfe6b}, {0xff01, 0xff60}, + {0xffe0, 0xffe6}, {0x1f200, 0x1f200}, {0x1f210, 0x1f231}, {0x1f240, 0x1f248}, + {0x20000,0x2ffff}, +}; + +static int zwchars[][2] = { + {0x0300, 0x036f}, {0x0483, 0x0489}, {0x0591, 0x05bd}, {0x05bf, 0x05bf}, + {0x05c1, 0x05c2}, {0x05c4, 0x05c5}, {0x05c7, 0x05c7}, {0x0610, 0x061a}, + {0x064b, 0x065e}, {0x0670, 0x0670}, {0x06d6, 0x06dc}, {0x06de, 0x06e4}, + {0x06e7, 0x06e8}, {0x06ea, 0x06ed}, {0x0711, 0x0711}, {0x0730, 0x074a}, + {0x07a6, 0x07b0}, {0x07eb, 0x07f3}, {0x0816, 0x0819}, {0x081b, 0x0823}, + {0x0825, 0x0827}, {0x0829, 0x082d}, {0x0900, 0x0903}, {0x093c, 0x093c}, + {0x093e, 0x094e}, {0x0951, 0x0955}, {0x0962, 0x0963}, {0x0981, 0x0983}, + {0x09bc, 0x09bc}, {0x09be, 0x09c4}, {0x09c7, 0x09c8}, {0x09cb, 0x09cd}, + {0x09d7, 0x09d7}, {0x09e2, 0x09e3}, {0x0a01, 0x0a03}, {0x0a3c, 0x0a3c}, + {0x0a3e, 0x0a42}, {0x0a47, 0x0a48}, {0x0a4b, 0x0a4d}, {0x0a51, 0x0a51}, + {0x0a70, 0x0a71}, {0x0a75, 0x0a75}, {0x0a81, 0x0a83}, {0x0abc, 0x0abc}, + {0x0abe, 0x0ac5}, {0x0ac7, 0x0ac9}, {0x0acb, 0x0acd}, {0x0ae2, 0x0ae3}, + {0x0b01, 0x0b03}, {0x0b3c, 0x0b3c}, {0x0b3e, 0x0b44}, {0x0b47, 0x0b48}, + {0x0b4b, 0x0b4d}, {0x0b56, 0x0b57}, {0x0b62, 0x0b63}, {0x0b82, 0x0b82}, + {0x0bbe, 0x0bc2}, {0x0bc6, 0x0bc8}, {0x0bca, 0x0bcd}, {0x0bd7, 0x0bd7}, + {0x0c01, 0x0c03}, {0x0c3e, 0x0c44}, {0x0c46, 0x0c48}, {0x0c4a, 0x0c4d}, + {0x0c55, 0x0c56}, {0x0c62, 0x0c63}, {0x0c82, 0x0c83}, {0x0cbc, 0x0cbc}, + {0x0cbe, 0x0cc4}, {0x0cc6, 0x0cc8}, {0x0cca, 0x0ccd}, {0x0cd5, 0x0cd6}, + {0x0ce2, 0x0ce3}, {0x0d02, 0x0d03}, {0x0d3e, 0x0d44}, {0x0d46, 0x0d48}, + {0x0d4a, 0x0d4d}, {0x0d57, 0x0d57}, {0x0d62, 0x0d63}, {0x0d82, 0x0d83}, + {0x0dca, 0x0dca}, {0x0dcf, 0x0dd4}, {0x0dd6, 0x0dd6}, {0x0dd8, 0x0ddf}, + {0x0df2, 0x0df3}, {0x0e31, 0x0e31}, {0x0e34, 0x0e3a}, {0x0e47, 0x0e4e}, + {0x0eb1, 0x0eb1}, {0x0eb4, 0x0eb9}, {0x0ebb, 0x0ebc}, {0x0ec8, 0x0ecd}, + {0x0f18, 0x0f19}, {0x0f35, 0x0f35}, {0x0f37, 0x0f37}, {0x0f39, 0x0f39}, + {0x0f3e, 0x0f3f}, {0x0f71, 0x0f84}, {0x0f86, 0x0f87}, {0x0f90, 0x0f97}, + {0x0f99, 0x0fbc}, {0x0fc6, 0x0fc6}, {0x102b, 0x103e}, {0x1056, 0x1059}, + {0x105e, 0x1060}, {0x1062, 0x1064}, {0x1067, 0x106d}, {0x1071, 0x1074}, + {0x1082, 0x108d}, {0x108f, 0x108f}, {0x109a, 0x109d}, {0x135f, 0x135f}, + {0x1712, 0x1714}, {0x1732, 0x1734}, {0x1752, 0x1753}, {0x1772, 0x1773}, + {0x17b6, 0x17d3}, {0x17dd, 0x17dd}, {0x180b, 0x180d}, {0x18a9, 0x18a9}, + {0x1920, 0x192b}, {0x1930, 0x193b}, {0x19b0, 0x19c0}, {0x19c8, 0x19c9}, + {0x1a17, 0x1a1b}, {0x1a55, 0x1a5e}, {0x1a60, 0x1a7c}, {0x1a7f, 0x1a7f}, + {0x1b00, 0x1b04}, {0x1b34, 0x1b44}, {0x1b6b, 0x1b73}, {0x1b80, 0x1b82}, + {0x1ba1, 0x1baa}, {0x1c24, 0x1c37}, {0x1cd0, 0x1cd2}, {0x1cd4, 0x1ce8}, + {0x1ced, 0x1ced}, {0x1cf2, 0x1cf2}, {0x1dc0, 0x1de6}, {0x1dfd, 0x1dff}, + {0x200b, 0x200f}, + {0x20d0, 0x20f0}, {0x2cef, 0x2cf1}, {0x2de0, 0x2dff}, {0x302a, 0x302f}, + {0x3099, 0x309a}, {0xa66f, 0xa672}, {0xa67c, 0xa67d}, {0xa6f0, 0xa6f1}, + {0xa802, 0xa802}, {0xa806, 0xa806}, {0xa80b, 0xa80b}, {0xa823, 0xa827}, + {0xa880, 0xa881}, {0xa8b4, 0xa8c4}, {0xa8e0, 0xa8f1}, {0xa926, 0xa92d}, + {0xa947, 0xa953}, {0xa980, 0xa983}, {0xa9b3, 0xa9c0}, {0xaa29, 0xaa36}, + {0xaa43, 0xaa43}, {0xaa4c, 0xaa4d}, {0xaa7b, 0xaa7b}, {0xaab0, 0xaab0}, + {0xaab2, 0xaab4}, {0xaab7, 0xaab8}, {0xaabe, 0xaabf}, {0xaac1, 0xaac1}, + {0xabe3, 0xabea}, {0xabec, 0xabed}, {0xfb1e, 0xfb1e}, {0xfe00, 0xfe0f}, + {0xfe20, 0xfe26}, {0x101fd, 0x101fd}, {0x10a01, 0x10a03}, {0x10a05, 0x10a06}, + {0x10a0c, 0x10a0f}, {0x10a38, 0x10a3a}, {0x10a3f, 0x10a3f}, {0x11080, 0x11082}, + {0x110b0, 0x110ba}, {0x1d165, 0x1d169}, {0x1d16d, 0x1d172}, {0x1d17b, 0x1d182}, + {0x1d185, 0x1d18b}, {0x1d1aa, 0x1d1ad}, {0x1d242, 0x1d244}, {0xe0100, 0xe01ef} +}; + +static int bchars[][2] = { + {0x00000, 0x0001f}, {0x00080, 0x0009f}, {0x00300, 0x0036f}, + {0x00379, 0x00379}, {0x00380, 0x00383}, {0x0038d, 0x0038d}, + {0x00483, 0x00489}, {0x00527, 0x00530}, {0x00558, 0x00558}, + {0x00588, 0x00588}, {0x0058c, 0x005bd}, {0x005c1, 0x005c2}, + {0x005c5, 0x005c5}, {0x005c8, 0x005cf}, {0x005ec, 0x005ef}, + {0x005f6, 0x00605}, {0x00611, 0x0061a}, {0x0061d, 0x0061d}, + {0x0064b, 0x0065f}, {0x006d6, 0x006e4}, {0x006e8, 0x006e8}, + {0x006eb, 0x006ed}, {0x0070f, 0x0070f}, {0x00730, 0x0074c}, + {0x007a7, 0x007b0}, {0x007b3, 0x007bf}, {0x007ec, 0x007f3}, + {0x007fc, 0x007ff}, {0x00817, 0x00819}, {0x0081c, 0x00823}, + {0x00826, 0x00827}, {0x0082a, 0x0082f}, {0x00840, 0x00903}, + {0x0093b, 0x0093c}, {0x0093f, 0x0094f}, {0x00952, 0x00957}, + {0x00963, 0x00963}, {0x00974, 0x00978}, {0x00981, 0x00984}, + {0x0098e, 0x0098e}, {0x00992, 0x00992}, {0x009b1, 0x009b1}, + {0x009b4, 0x009b5}, {0x009bb, 0x009bc}, {0x009bf, 0x009cd}, + {0x009d0, 0x009db}, {0x009e2, 0x009e5}, {0x009fd, 0x00a04}, + {0x00a0c, 0x00a0e}, {0x00a12, 0x00a12}, {0x00a31, 0x00a31}, + {0x00a37, 0x00a37}, {0x00a3b, 0x00a58}, {0x00a5f, 0x00a65}, + {0x00a71, 0x00a71}, {0x00a76, 0x00a84}, {0x00a92, 0x00a92}, + {0x00ab1, 0x00ab1}, {0x00aba, 0x00abc}, {0x00abf, 0x00acf}, + {0x00ad2, 0x00adf}, {0x00ae3, 0x00ae5}, {0x00af2, 0x00b04}, + {0x00b0e, 0x00b0e}, {0x00b12, 0x00b12}, {0x00b31, 0x00b31}, + {0x00b3a, 0x00b3c}, {0x00b3f, 0x00b5b}, {0x00b62, 0x00b65}, + {0x00b73, 0x00b82}, {0x00b8b, 0x00b8d}, {0x00b96, 0x00b98}, + {0x00b9d, 0x00b9d}, {0x00ba1, 0x00ba2}, {0x00ba6, 0x00ba7}, + {0x00bac, 0x00bad}, {0x00bbb, 0x00bcf}, {0x00bd2, 0x00be5}, + {0x00bfc, 0x00c04}, {0x00c11, 0x00c11}, {0x00c34, 0x00c34}, + {0x00c3b, 0x00c3c}, {0x00c3f, 0x00c57}, {0x00c5b, 0x00c5f}, + {0x00c63, 0x00c65}, {0x00c71, 0x00c77}, {0x00c81, 0x00c84}, + {0x00c91, 0x00c91}, {0x00cb4, 0x00cb4}, {0x00cbb, 0x00cbc}, + {0x00cbf, 0x00cdd}, {0x00ce2, 0x00ce5}, {0x00cf3, 0x00d04}, + {0x00d11, 0x00d11}, {0x00d3a, 0x00d3c}, {0x00d3f, 0x00d5f}, + {0x00d63, 0x00d65}, {0x00d77, 0x00d78}, {0x00d81, 0x00d84}, + {0x00d98, 0x00d99}, {0x00dbc, 0x00dbc}, {0x00dbf, 0x00dbf}, + {0x00dc8, 0x00df3}, {0x00df6, 0x00e00}, {0x00e34, 0x00e3e}, + {0x00e48, 0x00e4e}, {0x00e5d, 0x00e80}, {0x00e85, 0x00e86}, + {0x00e8b, 0x00e8c}, {0x00e8f, 0x00e93}, {0x00ea0, 0x00ea0}, + {0x00ea6, 0x00ea6}, {0x00ea9, 0x00ea9}, {0x00eb1, 0x00eb1}, + {0x00eb5, 0x00ebc}, {0x00ebf, 0x00ebf}, {0x00ec7, 0x00ecf}, + {0x00edb, 0x00edb}, {0x00edf, 0x00eff}, {0x00f19, 0x00f19}, + {0x00f37, 0x00f37}, {0x00f3e, 0x00f3f}, {0x00f6d, 0x00f84}, + {0x00f87, 0x00f87}, {0x00f8d, 0x00fbd}, {0x00fcd, 0x00fcd}, + {0x00fda, 0x00fff}, {0x0102c, 0x0103e}, {0x01057, 0x01059}, + {0x0105f, 0x01060}, {0x01063, 0x01064}, {0x01068, 0x0106d}, + {0x01072, 0x01074}, {0x01083, 0x0108d}, {0x0109a, 0x0109d}, + {0x010c7, 0x010cf}, {0x010fe, 0x010ff}, {0x0124e, 0x0124f}, + {0x01259, 0x01259}, {0x0125f, 0x0125f}, {0x0128e, 0x0128f}, + {0x012b6, 0x012b7}, {0x012c1, 0x012c1}, {0x012c7, 0x012c7}, + {0x01311, 0x01311}, {0x01317, 0x01317}, {0x0135c, 0x0135f}, + {0x0137e, 0x0137f}, {0x0139b, 0x0139f}, {0x013f6, 0x013ff}, + {0x0169e, 0x0169f}, {0x016f2, 0x016ff}, {0x01712, 0x0171f}, + {0x01733, 0x01734}, {0x01738, 0x0173f}, {0x01753, 0x0175f}, + {0x01771, 0x0177f}, {0x017b5, 0x017d3}, {0x017de, 0x017df}, + {0x017eb, 0x017ef}, {0x017fb, 0x017ff}, {0x0180c, 0x0180d}, + {0x0181a, 0x0181f}, {0x01879, 0x0187f}, {0x018ab, 0x018af}, + {0x018f7, 0x018ff}, {0x0191e, 0x0193f}, {0x01942, 0x01943}, + {0x0196f, 0x0196f}, {0x01976, 0x0197f}, {0x019ad, 0x019c0}, + {0x019c9, 0x019cf}, {0x019dc, 0x019dd}, {0x01a18, 0x01a1d}, + {0x01a56, 0x01a7f}, {0x01a8b, 0x01a8f}, {0x01a9b, 0x01a9f}, + {0x01aaf, 0x01b04}, {0x01b35, 0x01b44}, {0x01b4d, 0x01b4f}, + {0x01b6c, 0x01b73}, {0x01b7e, 0x01b82}, {0x01ba2, 0x01bad}, + {0x01bbb, 0x01bff}, {0x01c25, 0x01c3a}, {0x01c4b, 0x01c4c}, + {0x01c81, 0x01cd2}, {0x01cd5, 0x01ce8}, {0x01cf2, 0x01cff}, + {0x01dc1, 0x01dff}, {0x01f17, 0x01f17}, {0x01f1f, 0x01f1f}, + {0x01f47, 0x01f47}, {0x01f4f, 0x01f4f}, {0x01f5a, 0x01f5a}, + {0x01f5e, 0x01f5e}, {0x01f7f, 0x01f7f}, {0x01fc5, 0x01fc5}, + {0x01fd5, 0x01fd5}, {0x01ff0, 0x01ff1}, {0x01fff, 0x01fff}, + {0x0200c, 0x0200f}, {0x02029, 0x0202e}, {0x02061, 0x0206f}, + {0x02073, 0x02073}, {0x02095, 0x0209f}, {0x020ba, 0x020ff}, + {0x0218b, 0x0218f}, {0x023ea, 0x023ff}, {0x02428, 0x0243f}, + {0x0244c, 0x0245f}, {0x026e2, 0x026e2}, {0x026e5, 0x026e7}, + {0x02705, 0x02705}, {0x0270b, 0x0270b}, {0x0274c, 0x0274c}, + {0x02753, 0x02755}, {0x02760, 0x02760}, {0x02796, 0x02797}, + {0x027bf, 0x027bf}, {0x027cd, 0x027cf}, {0x02b4e, 0x02b4f}, + {0x02b5b, 0x02bff}, {0x02c5f, 0x02c5f}, {0x02cf0, 0x02cf8}, + {0x02d27, 0x02d2f}, {0x02d67, 0x02d6e}, {0x02d71, 0x02d7f}, + {0x02d98, 0x02d9f}, {0x02daf, 0x02daf}, {0x02dbf, 0x02dbf}, + {0x02dcf, 0x02dcf}, {0x02ddf, 0x02dff}, {0x02e33, 0x02e7f}, + {0x02ef4, 0x02eff}, {0x02fd7, 0x02fef}, {0x02ffd, 0x02fff}, + {0x0302b, 0x0302f}, {0x03097, 0x0309a}, {0x03101, 0x03104}, + {0x0312f, 0x03130}, {0x031b8, 0x031bf}, {0x031e5, 0x031ef}, + {0x032ff, 0x032ff}, {0x04db7, 0x04dbf}, {0x09fcd, 0x09fff}, + {0x0a48e, 0x0a48f}, {0x0a4c8, 0x0a4cf}, {0x0a62d, 0x0a63f}, + {0x0a661, 0x0a661}, {0x0a670, 0x0a672}, {0x0a675, 0x0a67d}, + {0x0a699, 0x0a69f}, {0x0a6f1, 0x0a6f1}, {0x0a6f9, 0x0a6ff}, + {0x0a78e, 0x0a7fa}, {0x0a806, 0x0a806}, {0x0a823, 0x0a827}, + {0x0a82d, 0x0a82f}, {0x0a83b, 0x0a83f}, {0x0a879, 0x0a881}, + {0x0a8b5, 0x0a8cd}, {0x0a8db, 0x0a8f1}, {0x0a8fd, 0x0a8ff}, + {0x0a927, 0x0a92d}, {0x0a948, 0x0a95e}, {0x0a97e, 0x0a983}, + {0x0a9b4, 0x0a9c0}, {0x0a9da, 0x0a9dd}, {0x0a9e1, 0x0a9ff}, + {0x0aa2a, 0x0aa3f}, {0x0aa4c, 0x0aa4f}, {0x0aa5b, 0x0aa5b}, + {0x0aa7c, 0x0aa7f}, {0x0aab2, 0x0aab4}, {0x0aab8, 0x0aab8}, + {0x0aabf, 0x0aabf}, {0x0aac3, 0x0aada}, {0x0aae1, 0x0abbf}, + {0x0abe4, 0x0abea}, {0x0abed, 0x0abef}, {0x0abfb, 0x0abff}, + {0x0d7a5, 0x0d7af}, {0x0d7c8, 0x0d7ca}, {0x0d7fd, 0x0f8ff}, + {0x0fa2f, 0x0fa2f}, {0x0fa6f, 0x0fa6f}, {0x0fadb, 0x0faff}, + {0x0fb08, 0x0fb12}, {0x0fb19, 0x0fb1c}, {0x0fb37, 0x0fb37}, + {0x0fb3f, 0x0fb3f}, {0x0fb45, 0x0fb45}, {0x0fbb3, 0x0fbd2}, + {0x0fd41, 0x0fd4f}, {0x0fd91, 0x0fd91}, {0x0fdc9, 0x0fdef}, + {0x0fdff, 0x0fe0f}, {0x0fe1b, 0x0fe2f}, {0x0fe67, 0x0fe67}, + {0x0fe6d, 0x0fe6f}, {0x0fefd, 0x0ff00}, {0x0ffc0, 0x0ffc1}, + {0x0ffc9, 0x0ffc9}, {0x0ffd1, 0x0ffd1}, {0x0ffd9, 0x0ffd9}, + {0x0ffde, 0x0ffdf}, {0x0ffef, 0x0fffb}, {0x0ffff, 0x0ffff}, + {0x10027, 0x10027}, {0x1003e, 0x1003e}, {0x1004f, 0x1004f}, + {0x1005f, 0x1007f}, {0x100fc, 0x100ff}, {0x10104, 0x10106}, + {0x10135, 0x10136}, {0x1018c, 0x1018f}, {0x1019d, 0x101cf}, + {0x101fe, 0x1027f}, {0x1029e, 0x1029f}, {0x102d2, 0x102ff}, + {0x10324, 0x1032f}, {0x1034c, 0x1037f}, {0x103c4, 0x103c7}, + {0x103d7, 0x103ff}, {0x1049f, 0x1049f}, {0x104ab, 0x107ff}, + {0x10807, 0x10807}, {0x10836, 0x10836}, {0x1083a, 0x1083b}, + {0x1083e, 0x1083e}, {0x10860, 0x108ff}, {0x1091d, 0x1091e}, + {0x1093b, 0x1093e}, {0x10941, 0x109ff}, {0x10a02, 0x10a0f}, + {0x10a18, 0x10a18}, {0x10a35, 0x10a3f}, {0x10a49, 0x10a4f}, + {0x10a5a, 0x10a5f}, {0x10a81, 0x10aff}, {0x10b37, 0x10b38}, + {0x10b57, 0x10b57}, {0x10b74, 0x10b77}, {0x10b81, 0x10bff}, + {0x10c4a, 0x10e5f}, {0x10e80, 0x11082}, {0x110b1, 0x110ba}, + {0x110c2, 0x11fff}, {0x12370, 0x123ff}, {0x12464, 0x1246f}, + {0x12475, 0x12fff}, {0x13430, 0x1cfff}, {0x1d0f7, 0x1d0ff}, + {0x1d128, 0x1d128}, {0x1d166, 0x1d169}, {0x1d16e, 0x1d182}, + {0x1d186, 0x1d18b}, {0x1d1ab, 0x1d1ad}, {0x1d1df, 0x1d1ff}, + {0x1d243, 0x1d244}, {0x1d247, 0x1d2ff}, {0x1d358, 0x1d35f}, + {0x1d373, 0x1d3ff}, {0x1d49d, 0x1d49d}, {0x1d4a1, 0x1d4a1}, + {0x1d4a4, 0x1d4a4}, {0x1d4a8, 0x1d4a8}, {0x1d4ba, 0x1d4ba}, + {0x1d4c4, 0x1d4c4}, {0x1d50b, 0x1d50c}, {0x1d51d, 0x1d51d}, + {0x1d53f, 0x1d53f}, {0x1d547, 0x1d549}, {0x1d6a6, 0x1d6a7}, + {0x1d7cd, 0x1d7cd}, {0x1d801, 0x1efff}, {0x1f02d, 0x1f02f}, + {0x1f095, 0x1f0ff}, {0x1f10c, 0x1f10f}, {0x1f130, 0x1f130}, + {0x1f133, 0x1f13c}, {0x1f140, 0x1f141}, {0x1f144, 0x1f145}, + {0x1f148, 0x1f149}, {0x1f150, 0x1f156}, {0x1f159, 0x1f15e}, + {0x1f161, 0x1f178}, {0x1f17d, 0x1f17e}, {0x1f181, 0x1f189}, + {0x1f18f, 0x1f18f}, {0x1f192, 0x1f1ff}, {0x1f202, 0x1f20f}, + {0x1f233, 0x1f23f}, {0x1f24a, 0x1ffff}, {0x2a6d8, 0x2a6ff}, + {0x2b736, 0x2f7ff}, {0x2fa1f, 0x10ffff}, +}; + +static int find(int c, int tab[][2], int n) +{ + int l = 0; + int h = n - 1; + int m; + if (c < tab[0][0]) + return 0; + while (l <= h) { + m = (h + l) / 2; + if (c >= tab[m][0] && c <= tab[m][1]) + return 1; + if (c < tab[m][0]) + h = m - 1; + else + l = m + 1; + } + return 0; +} + +/* double-width characters */ +static int uc_isdw(int c) +{ + return c >= 0x1100 && find(c, dwchars, LEN(dwchars)); +} + +/* zero-width and combining characters */ +static int uc_iszw(int c) +{ + return c >= 0x0300 && find(c, zwchars, LEN(zwchars)); +} + +int uc_wid(char *s) +{ + int c = uc_code(s); + if (uc_iszw(c)) + return 0; + return uc_isdw(c) ? 2 : 1; +} + +/* nonprintable characters */ +int uc_isbell(char *s) +{ + int c = (unsigned char) *s; + if (c == ' ' || c == '\t' || c == '\n' || (c >= 0x20 && c < 0x7f)) + return 0; + c = uc_code(s); + return uc_iszw(c) || find(c, bchars, LEN(bchars)); +} + +/* combining characters */ +int uc_iscomb(char *s) +{ + int c = (unsigned char) *s; + if (c == ' ' || c == '\t' || c == '\n' || (c <= 0x7f && isprint(c))) + return 0; + return uc_acomb(uc_code(s)); +} + +int uc_word(char *ln, char *dst, int len, int off, char *ext) +{ + char *beg, *end; + if (!ln) + return 1; + beg = uc_chr(ln, off); + end = beg; + while (*end && (uc_kind(end) == 1 || + strchr(ext, (unsigned char) end[0]) != NULL)) + end = uc_next(end); + while (beg > ln && (uc_kind(uc_beg(ln, beg - 1)) == 1 || + strchr(ext, (unsigned char) beg[-1]) != NULL)) + beg = uc_beg(ln, beg - 1); + if (beg >= end) + return 1; + len = len - 1 < end - beg ? len - 1 : end - beg; + memcpy(dst, beg, len); + dst[len] = '\0'; + return 0; +} diff --git a/Apps/Neatvi/main/Source/vi.c b/Apps/Neatvi/main/Source/vi.c new file mode 100644 index 0000000..1541756 --- /dev/null +++ b/Apps/Neatvi/main/Source/vi.c @@ -0,0 +1,2235 @@ +/* + * NEATVI Editor + * + * Copyright (C) 2015-2026 Ali Gholami Rudi + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include "vi.h" + +/* parts of the screen to update; returned from vc_* functions */ +#define VC_COL 1 /* only obtain cursor column from xoff */ +#define VC_ROW 2 /* only the current line was updated */ +#define VC_WIN 4 /* only the current window was updated */ +#define VC_ALT 8 /* only the other window was updated */ +#define VC_ALL 12 /* all windows were updated */ +#define VC_OK 16 /* already updated */ +#define VC_BAD 32 /* no updates, command failed */ + +static char vi_msg[EXLEN]; /* current message */ +static int vi_pending; /* keep the status line contents */ +static char vi_charlast[8]; /* the last character searched via f, t, F, or T */ +static int vi_charcmd; /* the character finding command */ +static int vi_arg1, vi_arg2; /* the first and second arguments */ +static int vi_ybuf; /* current yank buffer */ +static int vi_pcol; /* the column requested by | command */ +static int vi_scroll; /* scroll amount for ^f and ^d */ +static int vi_soset, vi_so; /* search offset; 1 in "/kw/1" */ +static int vi_insert; /* insert mode */ +static int vi_insoff; /* insert offset */ +static char vi_ai[128]; /* insert indentation for ai option */ +static int w_cnt = 1; /* window count */ +static int w_cur; /* active window identifier */ +static int w_tmp; /* temporary window */ +static char *w_path; /* saved window path */ +static int w_row, w_off, w_top, w_left; /* saved window configuration */ +static int glob_id[128]; /* global mark buffer IDs */ +static int ex_printed; /* 1: ex_print() was called, 2: shell output is printed */ +static struct sbuf ex_printsb; /* ex_print() buffer */ + +static char *vi_ledmod; /* led_print() data for the status line */ +static char *vi_ledins; /* led_print() data for xrow when vi_insert is one */ + +static int vc_status(void); + +static int xtd_set(int td) +{ + int old = xtd; + xtd = td; + return old; +} + +static int vi_wait(void) +{ + if (ex_printed) { + char *o = sbuf_done(&ex_printsb); + char *s = o, *r; + int td = xtd_set(+2); + while (s && *s && (r = strchr(s, '\n'))) { + *r = '\0'; + if (s != o) + term_chr('\n'); + led_print(s, xrows - 1, 0, xcols, xhl ? ex_filetype() : "", NULL); + s = r + 1; + } + free(o); + term_pos(xrows, 0); + free(led_prompt("[enter to continue]", "", &xkmap, xhl ? "---" : "___", NULL)); + led_reset(&vi_ledmod); + xtd_set(td); + ex_printed = 0; + return 1; + } + return 0; +} + +static void vi_drawmsg(void) +{ + if (!vi_pending) { + int td = xtd_set(+2); + syn_context('.', w_tmp ? 'Z' : 0); + led_print(vi_msg[0] ? vi_msg : "\n", xrows, 0, xcols, xhl ? "---" : "___", &vi_ledmod); + syn_context('.', 0); + vi_msg[0] = '\0'; + xtd_set(td); + } +} + +static void vi_drawquick(char *s, int row) +{ + int td = xtd_set(+2); + led_print(s, row, 0, xcols, xhl ? "---" : "___", NULL); + xtd_set(td); +} + +static void vi_drawrow(int row) +{ + char *s = lbuf_get(xb, row); + syn_context(s ? '.' : ',', xhll && row == xrow ? '^' : 0); + led_print(s ? s : "~", row - xtop, xleft, xcols, xhl ? ex_filetype() : "", + vi_insert && row == xrow ? &vi_ledins : NULL); + syn_context('.', 0); +} + +/* redraw the given row; if row is -1 redraws all rows */ +static void vi_drawagain(int xcol, int row) +{ + int i; + for (i = xtop; i < xtop + xrows; i++) + if (row < 0 || i == row) + vi_drawrow(i); + vi_drawmsg(); +} + +/* update the screen */ +static void vi_drawupdate(int otop) +{ + int i = 0; + if (otop != xtop) { + term_pos(0, 0); + term_room(otop - xtop); + if (xtop > otop) { + int n = MIN(xtop - otop, xrows); + for (i = 0; i < n; i++) + vi_drawrow(xtop + xrows - n + i); + } else { + int n = MIN(otop - xtop, xrows); + for (i = 0; i < n; i++) + vi_drawrow(xtop + i); + } + } + vi_drawmsg(); +} + +/* update the screen by replacing lines r1 to r2 with n lines */ +static void vi_drawfix(int r1, int del, int ins) +{ + int s1 = r1; + int i; + if (r1 >= xtop + xrows) + return; + if (r1 < xtop) { + s1 = xtop; + del = MAX(0, del - (xtop - r1)); + ins = MAX(0, ins - (xtop - r1)); + } + if (ins != del) { + term_pos(s1 - xtop, 0); + term_room(ins - del - (s1 - r1)); + } + /* new lines are visible */ + if (del > ins && s1 + ins < xtop + xrows) { + int beg = xtop + xrows - del + ins - (s1 - r1); + for (i = beg; i < xtop + xrows; i++) + if (i >= s1 + ins && i >= xtop) + vi_drawrow(i); + } + /* draw replaced lines */ + for (i = s1; i < xtop + xrows; i++) + if (i < s1 + ins || (!i && !s1 && !ins)) + vi_drawrow(i); +} + +static int vi_switch(int id) +{ + int beg = 0; + int cnt = term_rowx(); + if (id >= w_cnt) + return 1; + if (id != w_cur) { + char cmd[1024]; + char *old = w_path && w_path[0] ? w_path : "/"; + int row = w_row, off = w_off, top = w_top, left = w_left; + char *ec = "ew"; + if (w_path && strcmp(w_path, ex_path()) == 0) + ec = "e"; + snprintf(cmd, sizeof(cmd), "%s! %s", ec, old); + free(w_path); + w_path = uc_dup(ex_path()); + w_row = xrow, w_off = xoff, w_top = xtop, w_left = xleft; + ex_command(cmd); + xrow = row, xoff = off, xtop = top, xleft = left; + } + if (w_cnt == 2) { + int half = cnt / 2; + beg = id == 0 ? 0 : half; + cnt = id == 0 ? half : term_rowx() - half; + } + term_window(beg, cnt - 1); + w_cur = id; + return 0; +} + +static int vi_wsplit(void) +{ + if (w_cnt != 1) + return 1; + free(w_path); + w_cnt = 2; + w_path = uc_dup(ex_path()); + w_row = xrow, w_off = xoff, w_top = xtop, w_left = xleft; + vi_pending = 0; + return vi_switch(0); +} + +static int vi_wonly(void) +{ + if (w_cnt != 2) + return 1; + w_cnt = 1; + w_cur = 0; + vi_pending = 0; + return vi_switch(0); +} + +static int vi_wclose(void) +{ + if (w_cnt != 2) + return 1; + vi_switch(1 - w_cur); + return vi_wonly(); +} + +static int vi_wswap(void) +{ + if (w_cnt != 2) + return 1; + w_cur = 1 - w_cur; + return 0; +} + +static void vi_wfix(void) +{ + if (xrow < 0 || xrow >= lbuf_len(xb)) + xrow = lbuf_len(xb) ? lbuf_len(xb) - 1 : 0; + if (xtop > xrow) + xtop = xtop - xrows / 2 > xrow ? + MAX(0, xrow - xrows / 2) : xrow; + if (xtop + xrows <= xrow) + xtop = xtop + xrows + xrows / 2 <= xrow ? + xrow - xrows / 2 : xrow - xrows + 1; + if (!vi_insert) + xoff = ren_noeol(lbuf_get(xb, xrow), xoff); +} + +static int vi_wmirror(void) +{ + vi_wonly(); + return vi_wsplit(); +} + +static int vi_buf[128]; +static int vi_buflen; + +static int vi_read(void) +{ + return vi_buflen ? vi_buf[--vi_buflen] : term_read(0); +} + +static void vi_back(int c) +{ + if (vi_buflen < LEN(vi_buf) && c >= 0) + vi_buf[vi_buflen++] = c; +} + +/* + * Skip known terminal input escape sequences. There are four cases: + * + * xterm sequences: \33[A ... \33[Z + * vt sequences: \33[1~ ... \33[35~ + * direct UTF-8: \33[0;1u ... \33[1114111;8u + * \33[0;1~ ... \33[1114111;8~ + */ +static int vi_readiseq(void) +{ + int k = vi_buflen ? vi_read() : term_read(1); + if (k != '[') { + vi_back(k); + return 0; + } + k = vi_read(); + if (k == '[') + k = vi_read(); + if ('A' <= k && k <= 'Z') + return 1; + while (('0' <= k && k <= '9') || k == ';') + k = vi_read(); + return 1; +} + +/* map cursor horizontal position to terminal column number */ +static int vi_pos(char *s, int pos) +{ + return dir_context(s ? s : "") >= 0 ? pos - xleft : xleft + xcols - pos - 1; +} + +static char *vi_prompt(char *msg, int *kmap, char *hist) +{ + char *r, *s; + int td = xtd_set(+2); + term_pos(xrows, 0); + s = led_prompt(msg, "", kmap, xhl ? "-ex" : "___", xhist != 0 ? hist : NULL); + xtd_set(td); + led_reset(&vi_ledmod); + if (!s) + return NULL; + r = uc_dup(strlen(s) >= strlen(msg) ? s + strlen(msg) : s); + free(s); + return r; +} + +/* read an ex input line */ +char *ex_read(char *msg) +{ + struct sbuf sb = {0}; + int c, td; + char *s; + if (xvis) { + term_pos(xrows - 1, 0); + td = xtd_set(+2); + s = led_prompt(msg, "", &xkmap, xhl ? "-ex" : "___", NULL); + xtd_set(td); + if (s) + term_chr('\n'); + return s; + } + while ((c = getchar()) != EOF && c != '\n') + sbuf_chr(&sb, c); + if (c == EOF) { + sbuf_free(&sb); + return NULL; + } + return sbuf_done(&sb); +} + +/* show an ex message */ +void ex_show(char *msg, ...) +{ + char buf[256]; + va_list ap; + va_start(ap, msg); + vsnprintf(buf, sizeof(buf), msg, ap); + va_end(ap); + if (xvis) { + snprintf(vi_msg, sizeof(vi_msg), "%s", buf); + vi_pending = 0; + vi_drawmsg(); + term_commit(); + vi_pending = 1; + } else { + printf("%s\n", buf); + } +} + +/* print an ex output line */ +void ex_print(char *line) +{ + if (vi_insert) { + led_print(line, xrows, 0, xcols, xhl ? "---" : "___", &vi_ledmod); + } else if (xvis) { + if (line) + sbuf_str(&ex_printsb, line); + if (line && (!line[0] || line[strlen(line) - 1] != '\n')) + sbuf_chr(&ex_printsb, '\n'); + if (!line) { + term_pos(xrows - 1, 0); + term_kill(); + term_commit(); + } + ex_printed = line ? 1 : 2; + } else { + if (line) + printf("%s", line); + } +} + +static char *reg_getln(int h) +{ + return reg_get(0x80 | h, NULL); +} + +static void reg_putln(int h, char *s) +{ + char *old = reg_get(0x80 | h, NULL); + struct sbuf sb = {0}; + int i = 0; + if (xhist == 0 || s == NULL || s[0] == '\0' || s[0] == '\n') + return; + /* ignore duplicate lines */ + if (old != NULL) { + while (s[i] && old[i] == s[i]) + i++; + if (!s[i] && old[i] == '\n') + return; + } + /* omit old lines */ + if (xhist > 0 && old != NULL) { + char *end = old; + for (i = 1; end != NULL && i < xhist; i++) + end = strchr(end == old ? end : end + 1, '\n'); + if (end != NULL) + end[1] = '\0'; + } + /* add the new line */ + sbuf_str(&sb, s); + if (strchr(s, '\n') == NULL) + sbuf_chr(&sb, '\n'); + if (old != NULL) + sbuf_str(&sb, old); + reg_put(0x80 | h, sbuf_buf(&sb), 1); + sbuf_free(&sb); +} + +static int vi_yankbuf(void) +{ + int c = vi_read(); + if (c == '"') + return (c = vi_read()) == '\\' ? 0x80 | vi_read() : c; + vi_back(c); + return 0; +} + +static int vi_prefix(void) +{ + int n = 0; + int c = vi_read(); + if ((c >= '1' && c <= '9')) { + while (isdigit(c)) { + n = n * 10 + c - '0'; + c = vi_read(); + } + } + vi_back(c); + return n; +} + +static int vi_col2off(struct lbuf *lb, int row, int col) +{ + char *ln = lbuf_get(lb, row); + return ln ? ren_off(ln, col) : 0; +} + +static int vi_off2col(struct lbuf *lb, int row, int off) +{ + char *ln = lbuf_get(lb, row); + return ln ? ren_pos(ln, off) : 0; +} + +static int vi_nextoff(struct lbuf *lb, int dir, int *row, int *off) +{ + int o = *off + dir; + if (o < 0 || !lbuf_get(lb, *row) || o >= uc_slen(lbuf_get(lb, *row))) + return 1; + *off = o; + return 0; +} + +static int vi_nextcol(struct lbuf *lb, int dir, int *row, int *off) +{ + char *ln = lbuf_get(lb, *row); + int col = ln ? ren_pos(ln, *off) : 0; + int o = ln ? ren_next(ln, col, dir) : -1; + if (o < 0) + return -1; + *off = ren_off(ln, o); + return 0; +} + +static int vi_findchar(struct lbuf *lb, char *cs, int cmd, int n, int *row, int *off) +{ + if (cs != vi_charlast) + strcpy(vi_charlast, cs); + vi_charcmd = cmd; + return lbuf_findchar(lb, cs, cmd, n, row, off); +} + +static int vi_next(int cmd, int cnt, int *row, int *off) +{ + char *kwd; + int r = *row; + int o = *off; + char *failed = NULL; + int len = 0; + int i, dir; + if (!lbuf_len(xb) || ex_kwd(&kwd, &dir)) + return 1; + dir = cmd == 'N' ? -dir : dir; + o = *off; + for (i = 0; i < cnt; i++) { + if (lbuf_search(xb, kwd, dir, &r, &o, &len)) { + failed = " not found"; + break; + } + if (i + 1 < cnt && cmd == '/') + o += len; + } + if (!failed) { + *row = r; + *off = o; + if (vi_soset) { + *off = -1; + if (*row + vi_so < 0 || *row + vi_so >= lbuf_len(xb)) + failed = " bad offset"; + else + *row += vi_so; + } + } + if (failed != NULL) + snprintf(vi_msg, sizeof(vi_msg), "/%s/%s", kwd, failed ? failed : ""); + return failed != NULL; +} + +static int vi_search(int cmd, int cnt, int *row, int *off) +{ + char sign[4] = {cmd}; + struct sbuf sb = {0}; + char *kw = vi_prompt(sign, &xkmap, reg_getln('/')); + char *re; + int ret = 0; + if (!kw) + return 1; + sbuf_chr(&sb, cmd); + sbuf_str(&sb, kw); + free(kw); + kw = sbuf_buf(&sb); + while ((re = re_read(&kw))) { + ex_kwdset(re[0] ? re : NULL, cmd == '/' ? +1 : -1); + if (re[0]) { + reg_putln('/', re); + reg_put('/', re, 0); + } + while (isspace((unsigned char) *kw)) + kw++; + vi_soset = (kw[0] >= '0' && kw[0] <= '9') || kw[0] == '+' || kw[0] == '-'; + vi_so = 0; + if (vi_soset) { + while (kw[0] == '+' || kw[0] == '-') + vi_so += *kw++ == '+' ? +1 : -1; + if (kw[0] >= '0' && kw[0] < '9') + vi_so = kw[-1] == '-' ? -atoi(kw) : atoi(kw); + while (kw[0] >= '0' && kw[0] < '9') + kw++; + } + free(re); + if ((ret = vi_next(cmd, cnt, row, off))) + break; + while (isspace((unsigned char) *kw)) + kw++; + if (!*kw || *kw != ';') + break; + kw++; + while (isspace((unsigned char) *kw)) + kw++; + if (!*kw || (*kw != '/' && *kw != '?')) + break; + } + sbuf_free(&sb); + return ret; +} + +static char *vi_char(int (*next)(void), int kmap) +{ + static char buf[8]; + int c1, c2; + int i, n; + int lnmode; + int c = next(); + switch (c) { + case TK_CTL('v'): + buf[0] = next(); + buf[1] = '\0'; + return buf; + case TK_CTL('k'): + c1 = next(); + if (TK_INT(c1)) + return NULL; + if (c1 == TK_CTL('k')) + return ""; + c2 = next(); + if (TK_INT(c2)) + return NULL; + return conf_digraph(c1, c2); + case TK_CTL('p'): + return reg_get(0, &lnmode); + case TK_CTL('r'): + c1 = next(); + return c1 > 0 ? reg_get(c1, &lnmode) : NULL; + } + if (TK_INT(c)) + return NULL; + if ((c & 0xc0) == 0xc0) { + buf[0] = c; + n = uc_len_expect(c); + for (i = 1; i < n; i++) + buf[i] = next(); + buf[n] = '\0'; + return buf; + } + return kmap_map(kmap, c); +} + +/* read a line motion */ +static int vi_motionln(int *row, int cmd) +{ + int cnt = (vi_arg1 ? vi_arg1 : 1) * (vi_arg2 ? vi_arg2 : 1); + int c = vi_read(); + int mark, mark_row, mark_off; + switch (c) { + case '\n': + case '+': + *row = MIN(*row + cnt, lbuf_len(xb) - 1); + break; + case '-': + *row = MAX(*row - cnt, 0); + break; + case '_': + *row = MIN(*row + cnt - 1, lbuf_len(xb) - 1); + break; + case '\'': + if ((mark = vi_read()) <= 0) + return -1; + if (lbuf_jump(xb, mark, &mark_row, &mark_off)) + return -1; + *row = mark_row; + break; + case 'j': + *row = MIN(*row + cnt, lbuf_len(xb) - 1); + break; + case 'k': + *row = MAX(*row - cnt, 0); + break; + case 'G': + *row = (vi_arg1 || vi_arg2) ? cnt - 1 : lbuf_len(xb) - 1; + break; + case 'H': + *row = MIN(xtop + cnt - 1, lbuf_len(xb) - 1); + break; + case 'L': + *row = MIN(xtop + xrows - 1 - cnt + 1, lbuf_len(xb) - 1); + break; + case 'M': + *row = MIN(xtop + xrows / 2, lbuf_len(xb) - 1); + break; + default: + if (c == cmd) { + *row = MIN(*row + cnt - 1, lbuf_len(xb) - 1); + break; + } + if (c == '%' && (vi_arg1 || vi_arg2)) { + if (cnt > 100) + return -1; + *row = MAX(0, lbuf_len(xb) - 1) * cnt / 100; + break; + } + vi_back(c); + return 0; + } + if (*row < 0) + *row = 0; + return c; +} + +/* read a motion */ +static int vi_motion(int *row, int *off) +{ + char cw[120], kw[128]; + int cnt = (vi_arg1 ? vi_arg1 : 1) * (vi_arg2 ? vi_arg2 : 1); + char *ln = lbuf_get(xb, *row); + int dir = dir_context(ln ? ln : ""); + int mark, mark_row, mark_off; + char *cs; + int mv; + int i; + if ((mv = vi_motionln(row, 0))) { + *off = -1; + return mv; + } + mv = vi_read(); + switch (mv) { + case 'f': + if (!(cs = vi_char(vi_read, xkmap))) + return -1; + if (vi_findchar(xb, cs, mv, cnt, row, off)) + return -1; + break; + case 'F': + if (!(cs = vi_char(vi_read, xkmap))) + return -1; + if (vi_findchar(xb, cs, mv, cnt, row, off)) + return -1; + break; + case ';': + if (!vi_charlast[0]) + return -1; + if (vi_findchar(xb, vi_charlast, vi_charcmd, cnt, row, off)) + return -1; + break; + case ',': + if (!vi_charlast[0]) + return -1; + if (vi_findchar(xb, vi_charlast, vi_charcmd, -cnt, row, off)) + return -1; + break; + case 'h': + for (i = 0; i < cnt; i++) + if (vi_nextcol(xb, -1 * dir, row, off)) + break; + break; + case 'l': + for (i = 0; i < cnt; i++) + if (vi_nextcol(xb, +1 * dir, row, off)) + break; + break; + case 't': + if (!(cs = vi_char(vi_read, xkmap))) + return -1; + if (vi_findchar(xb, cs, mv, cnt, row, off)) + return -1; + break; + case 'T': + if (!(cs = vi_char(vi_read, xkmap))) + return -1; + if (vi_findchar(xb, cs, mv, cnt, row, off)) + return -1; + break; + case 'B': + for (i = 0; i < cnt; i++) + if (lbuf_wordend(xb, 1, -1, row, off)) + break; + break; + case 'E': + for (i = 0; i < cnt; i++) + if (lbuf_wordend(xb, 1, +1, row, off)) + break; + break; + case 'W': + for (i = 0; i < cnt; i++) + if (lbuf_wordbeg(xb, 1, +1, row, off)) + break; + break; + case 'b': + for (i = 0; i < cnt; i++) + if (lbuf_wordend(xb, 0, -1, row, off)) + break; + break; + case 'e': + for (i = 0; i < cnt; i++) + if (lbuf_wordend(xb, 0, +1, row, off)) + break; + break; + case 'w': + for (i = 0; i < cnt; i++) + if (lbuf_wordbeg(xb, 0, +1, row, off)) + break; + break; + case '{': + for (i = 0; i < cnt; i++) + if (lbuf_paragraphbeg(xb, -1, row, off)) + break; + break; + case '}': + for (i = 0; i < cnt; i++) + if (lbuf_paragraphbeg(xb, +1, row, off)) + break; + break; + case '[': + if (vi_read() != '[') + return -1; + for (i = 0; i < cnt; i++) + if (lbuf_sectionbeg(xb, -1, conf_section(ex_filetype()), row, off)) + break; + break; + case ']': + if (vi_read() != ']') + return -1; + for (i = 0; i < cnt; i++) + if (lbuf_sectionbeg(xb, +1, conf_section(ex_filetype()), row, off)) + break; + break; + case '0': + *off = 0; + break; + case '^': + *off = lbuf_indents(xb, *row); + break; + case '$': + *off = lbuf_eol(xb, *row); + break; + case '|': + *off = vi_col2off(xb, *row, cnt - 1); + vi_pcol = cnt - 1; + break; + case '/': + if (vi_search(mv, cnt, row, off)) + return -1; + break; + case '?': + if (vi_search(mv, cnt, row, off)) + return -1; + break; + case 'n': + if (vi_next(mv, cnt, row, off)) + return -1; + break; + case 'N': + if (vi_next(mv, cnt, row, off)) + return -1; + break; + case TK_CTL('a'): + if (uc_word(lbuf_get(xb, *row), cw, sizeof(cw), *off, "") != 0) + return -1; + snprintf(kw, sizeof(kw), "\\<%s\\>", cw); + ex_kwdset(kw, +1); + vi_soset = 0; + if (vi_next('n', cnt, row, off)) + return -1; + break; + case ' ': + for (i = 0; i < cnt; i++) + if (vi_nextoff(xb, +1, row, off)) + break; + break; + case 127: + case TK_CTL('h'): + for (i = 0; i < cnt; i++) + if (vi_nextoff(xb, -1, row, off)) + break; + break; + case '`': + if ((mark = vi_read()) <= 0) + return -1; + if (lbuf_jump(xb, mark, &mark_row, &mark_off)) + return -1; + *row = mark_row; + *off = mark_off; + break; + case '%': + if (lbuf_pair(xb, row, off)) + return -1; + break; + default: + vi_back(mv); + return 0; + } + return mv; +} + +static void swap(int *a, int *b) +{ + int t = *a; + *a = *b; + *b = t; +} + +static char *lbuf_region(struct lbuf *lb, int r1, int o1, int r2, int o2) +{ + struct sbuf sb = {0}; + char *s1, *s2, *s3; + if (r1 == r2) + return uc_sub(lbuf_get(lb, r1), o1, o2); + s1 = uc_sub(lbuf_get(lb, r1), o1, -1); + s3 = uc_sub(lbuf_get(lb, r2), 0, o2); + s2 = lbuf_cp(lb, r1 + 1, r2); + sbuf_str(&sb, s1); + sbuf_str(&sb, s2); + sbuf_str(&sb, s3); + free(s1); + free(s2); + free(s3); + return sbuf_done(&sb); +} + +static int vi_yank(int r1, int o1, int r2, int o2, int lnmode) +{ + char *region; + region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2); + reg_put(vi_ybuf, region, lnmode); + free(region); + xrow = r1; + xoff = lnmode ? xoff : o1; + return 0; +} + +static int vi_delete(int r1, int o1, int r2, int o2, int lnmode) +{ + char *region; + region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2); + reg_put(vi_ybuf, region, lnmode); + free(region); + if (!lnmode) { + struct sbuf sb = {0}; + char *s1 = lbuf_get(xb, r1); + char *s2 = lbuf_get(xb, r2); + sbuf_mem(&sb, s1, s1 ? uc_chr(s1, o1) - s1 : 0); + sbuf_str(&sb, s2 ? uc_chr(s2, o2) : ""); + lbuf_edit(xb, sbuf_buf(&sb), r1, r2 + 1); + sbuf_free(&sb); + } else { + lbuf_edit(xb, NULL, r1, r2 + 1); + } + xrow = r1; + xoff = lnmode ? lbuf_indents(xb, xrow) : o1; + vi_drawfix(r1, r2 - r1 + 1, !lnmode); + return VC_OK; +} + +static int linecount(char *s) +{ + int n; + for (n = 0; s; n++) + if ((s = strchr(s, '\n'))) + s++; + return n; +} + +static char *vi_help(char *ln) +{ + static char ac[128]; + char cmd[128] = "ra \\~"; + char *info = " "; + char *beg = NULL, *end = NULL; + int lastkind = 0; + char *s, *r; + /* execute \~ register, if defined */ + if (reg_get(0x80 | '~', NULL)) { + reg_put('~', ln, 0); + if (!ex_command(cmd)) { + snprintf(ac, sizeof(ac), "%s", reg_get('~', NULL)); + if (strchr(ac, '\n') != NULL) + *strchr(ac, '\n') = '\0'; + return ac; + } + return NULL; + } + /* extract tag information */ + for (s = ln; s && *s; s = uc_next(s)) { + int kind = uc_kind(s); + if (lastkind != 1 && kind == 1) + beg = s; + if (lastkind == 1 && kind != 1) + end = s; + lastkind = kind; + } + end = lastkind == 1 ? s : end; + if (beg != NULL) { + char tag[128]; + int pos = 0, dir = 0; + if (beg != NULL && end - beg + 1 > sizeof(tag)) + end = beg + sizeof(tag) - 1; + memcpy(tag, beg, end - beg); + tag[end - beg] = '\0'; + if (!tag_find(tag, &pos, dir, NULL, 0, cmd, sizeof(cmd))) + if ((r = strrchr(cmd, '"')) != NULL) + info = r + 1; + } + led_print(info, xrows, 0, xcols, xhl ? "---" : "___", &vi_ledmod); + term_pos(xrow - xtop, 0); + return NULL; +} + +static int vi_indents(char *ln, char *in, int size) +{ + int cnt = 0; + while (cnt < size && ln && (*ln == ' ' || *ln == '\t')) + in[cnt++] = *ln++; + in[cnt] = '\0'; + return cnt; +} + +static int vi_change(int r1, int o1, int r2, int o2, int lnmode) +{ + struct sbuf sb = {0}; + char *s1 = lbuf_get(xb, r1); + char *s2 = lbuf_get(xb, r2); + char *region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2); + reg_put(vi_ybuf, region, lnmode); + free(region); + if (xai && lnmode) + vi_indents(s1, vi_ai, sizeof(vi_ai) - 1); + if (lnmode) { + sbuf_str(&sb, xai ? vi_ai : ""); + sbuf_str(&sb, "\n"); + } else { + sbuf_mem(&sb, s1, s1 ? uc_chr(s1, o1) - s1 : 0); + sbuf_str(&sb, s2 ? uc_chr(s2, o2) : ""); + } + lbuf_edit(xb, sbuf_buf(&sb), r1, r2 + 1); + sbuf_free(&sb); + xrow = r1; + xoff = xai && lnmode ? lbuf_indents(xb, r1) : o1; + vi_drawfix(r1, r2 - r1 + 1, 1); + vi_insoff = xoff; + vi_insert = 1; + led_reset(&vi_ledins); + return VC_OK; +} + +static int vi_case(int r1, int o1, int r2, int o2, int lnmode, int cmd) +{ + char *region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2); + char *s = region; + while (*s) { + int c = (unsigned char) s[0]; + if (c <= 0x7f) { + if (cmd == 'u') + s[0] = tolower(c); + if (cmd == 'U') + s[0] = toupper(c); + if (cmd == '~') + s[0] = islower(c) ? toupper(c) : tolower(c); + } + s = uc_next(s); + } + if (!lnmode) { + struct sbuf sb = {0}; + char *s1 = lbuf_get(xb, r1); + char *s2 = lbuf_get(xb, r2); + sbuf_mem(&sb, s1, s1 ? uc_chr(s1, o1) - s1 : 0); + sbuf_str(&sb, region); + sbuf_str(&sb, s2 ? uc_chr(s2, o2) : ""); + lbuf_edit(xb, sbuf_buf(&sb), r1, r2 + 1); + sbuf_free(&sb); + } else { + lbuf_edit(xb, region, r1, r2 + 1); + } + xrow = r2; + xoff = lnmode ? lbuf_indents(xb, r2) : o2; + free(region); + vi_drawfix(r1, r2 - r1 + 1, r2 - r1 + 1); + return VC_OK; +} + +static int vi_pipe(int r1, int r2) +{ + char *text; + char *rep; + int kmap = 0; + char *cmd = vi_prompt("!", &kmap, reg_getln('!')); + if (!cmd) + return 0; + reg_put('!', cmd, 1); + reg_putln('!', cmd); + text = lbuf_cp(xb, r1, r2 + 1); + rep = cmd_pipe(cmd, text, 1); + if (rep) + lbuf_edit(xb, rep, r1, r2 + 1); + free(cmd); + free(text); + free(rep); + return VC_WIN; +} + +static int vi_shift(int r1, int r2, int dir) +{ + struct sbuf sb = {0}; + char *ln; + int i; + for (i = r1; i <= r2; i++) { + if (!(ln = lbuf_get(xb, i))) + continue; + if (dir > 0) { + if (ln[0] != '\n') + sbuf_chr(&sb, '\t'); + } else { + ln = ln[0] == ' ' || ln[0] == '\t' ? ln + 1 : ln; + } + sbuf_str(&sb, ln); + lbuf_edit(xb, sbuf_buf(&sb), i, i + 1); + sbuf_free(&sb); + } + xrow = r1; + xoff = lbuf_indents(xb, xrow); + vi_drawfix(r1, r2 - r1 + 1, r2 - r1 + 1); + return VC_OK; +} + +static int vc_motion(int cmd) +{ + int r1 = xrow, r2 = xrow; /* region rows */ + int o1 = xoff, o2 = xoff; /* visual region columns */ + int lnmode = 0; /* line-based region */ + int mv; + vi_arg2 = vi_prefix(); + if (vi_arg2 < 0) + return VC_BAD; + o1 = ren_noeol(lbuf_get(xb, r1), o1); + o2 = o1; + if ((mv = vi_motionln(&r2, cmd))) { + o2 = -1; + } else if (!(mv = vi_motion(&r2, &o2))) { + vi_read(); + return 0; + } + if (mv < 0) + return VC_BAD; + lnmode = o2 < 0; + if (lnmode) { + o1 = 0; + o2 = lbuf_eol(xb, r2); + } + if (r1 > r2) { + swap(&r1, &r2); + swap(&o1, &o2); + } + if (r1 == r2 && o1 > o2) + swap(&o1, &o2); + o1 = ren_noeol(lbuf_get(xb, r1), o1); + if (!lnmode && strchr("fFtTeE%", mv)) + if (o2 < lbuf_eol(xb, r2)) + o2 = ren_noeol(lbuf_get(xb, r2), o2) + 1; + if (cmd == 'y') + return vi_yank(r1, o1, r2, o2, lnmode); + if (cmd == 'd') + return vi_delete(r1, o1, r2, o2, lnmode); + if (cmd == 'c') + return vi_change(r1, o1, r2, o2, lnmode); + if (cmd == '~' || cmd == 'u' || cmd == 'U') + return vi_case(r1, o1, r2, o2, lnmode, cmd); + if (cmd == '>' || cmd == '<') + return vi_shift(r1, r2, cmd == '>' ? +1 : -1); + if (cmd == '!') { + if (mv == '{' || mv == '}') + if (lbuf_get(xb, r2) && lbuf_get(xb, r2)[0] == '\n' && r1 < r2) + r2--; + return vi_pipe(r1, r2); + } + return 0; +} + +static int vc_insert(int cmd) +{ + char in[sizeof(vi_ai) + 1]; + char *ln = lbuf_get(xb, xrow); + if (cmd == 'I') + xoff = lbuf_indents(xb, xrow); + if (cmd == 'A') + xoff = lbuf_eol(xb, xrow); + if ((cmd == 'o' || cmd == 'O') && xai) + vi_indents(ln, vi_ai, sizeof(vi_ai) - 1); + if (cmd == 'o' && ln) + xrow++; + if (cmd == 'a') + xoff++; + if (!ln || ln[0] == '\n') + xoff = 0; + if ((cmd != 'o' && cmd != 'O') && !ln) + lbuf_edit(xb, "\n", xrow, xrow); + if (cmd == 'o' || cmd == 'O') { + snprintf(in, sizeof(in), "%s\n", vi_ai); + lbuf_edit(xb, xai ? in : "\n", xrow, xrow); + } + if (cmd == 'o' || cmd == 'O') + xoff = xai ? lbuf_indents(xb, xrow) : 0; + if ((cmd == 'o' || cmd == 'O') && ln) + vi_drawfix(xrow, 0, 1); + if (cmd == 'O' && xhll && ln) + vi_drawrow(xrow + 1); + if (!ln) + vi_drawrow(0); + vi_insoff = xoff; + vi_insert = 1; + led_reset(&vi_ledins); + return VC_OK; +} + +static void vi_edit(int off, int del, char *ins) +{ + char *ln = lbuf_get(xb, xrow); + struct sbuf sb = {0}; + char *pos = ln ? uc_chr(ln, off) : NULL; + char *end = pos ? uc_chr(pos, del) : NULL; + char *last = strrchr(ins, '\n'); + int lncnt = linecount(ins); + int row = xrow; + last = last ? last + 1 : ins; + sbuf_mem(&sb, ln, pos ? pos - ln : 0); + sbuf_str(&sb, ins); + sbuf_str(&sb, end && end[0] ? end : "\n"); + lbuf_edit(xb, sbuf_buf(&sb), xrow, xrow + 1); + vi_drawrow(row); + xrow += lncnt - 1; + xoff = xoff - del + uc_slen(last) - (lncnt > 1 ? off : 0); + vi_insoff = lncnt > 1 ? 0 : vi_insoff; + if (lncnt > 1) + led_reset(&vi_ledins); + if (lncnt > 1) + vi_drawfix(row + 1, 0, lncnt - 1); + sbuf_free(&sb); +} + +static int vi_lastword(char *s, int off) +{ + char *r = uc_chr(s, off); + int kind = -1; + while (r > s) { + r = uc_beg(s, r - 1); + off--; + if (kind >= 0 && uc_kind(r) != kind) + return off + 1; + if (kind < 0 && !uc_isspace(r)) + kind = uc_kind(r); + } + return off; +} + +static int vc_insertcmd(void) +{ + int c = vi_read(); + char *s = NULL; + int off; + switch (c) { + case TK_CTL('f'): + xkmap = xkmap_alt; + return VC_OK; + case TK_CTL('e'): + xkmap = 0; + return VC_OK; + case TK_CTL('h'): + case 127: + if (xoff > vi_insoff) + vi_edit(xoff - 1, 1, ""); + return VC_OK; + case TK_CTL('u'): + if (xoff > vi_insoff) + vi_edit(vi_insoff, xoff - vi_insoff, ""); + return VC_OK; + case TK_CTL('w'): + s = lbuf_get(xb, xrow); + off = vi_lastword(s, xoff); + off = MAX(off, vi_insoff); + if (off < xoff) + vi_edit(off, xoff - off, ""); + return VC_OK; + case TK_CTL('t'): + vi_edit(0, 0, "\t"); + vi_insoff = vi_insoff > 0 ? vi_insoff + 1 : 0; + return VC_OK; + case TK_CTL('d'): + s = lbuf_get(xb, xrow); + if (s[0] == ' ' || s[0] == '\t') { + vi_edit(0, 1, ""); + vi_insoff = vi_insoff > 0 ? vi_insoff - 1 : 0; + } + return VC_OK; + case TK_CTL('a'): + if (1) { + char cmp[128]; + char *ln = uc_sub(lbuf_get(xb, xrow), 0, xoff); + char *ac = vi_help(ln); + if (ac != NULL) + snprintf(cmp, sizeof(cmp), "%s", ac); + free(ln); + } + return VC_OK; + case '\n': + if (xai) { + char *ln = lbuf_get(xb, xrow); + char in[LEN(vi_ai) + 1]; + int sz = MIN(LEN(in) - 2, xoff); + int indents = vi_indents(ln, in, sz); + int noindents = indents == sz; + snprintf(vi_ai, sizeof(vi_ai), "%s", in); + snprintf(in, sizeof(in), "\n%s", vi_ai); + vi_edit(noindents ? 0 : xoff, noindents ? xoff : 0, in); + } else { + vi_edit(xoff, 0, "\n"); + } + return VC_OK; + default: + if (c == TK_ESC) + vi_readiseq(); + if (TK_INT(c)) { + char *ln = lbuf_get(xb, xrow); + if (xai && ln[lbuf_indents(xb, xrow)] == '\n') { + lbuf_edit(xb, "\n", xrow, xrow + 1); + xoff = 0; + } + vi_insert = 0; + xoff = MAX(0, xoff - 1); + return VC_OK; + } + } + vi_back(c); + if ((s = vi_char(vi_read, xkmap))) + vi_edit(xoff, 0, s); + return VC_OK; +} + +static int vc_put(int cmd) +{ + int cnt = MAX(1, vi_arg1); + int lnmode; + char *buf = reg_get(vi_ybuf, &lnmode); + int lncnt = 0; + int i; + if (!buf) + snprintf(vi_msg, sizeof(vi_msg), "yank buffer empty"); + if (!buf || !buf[0]) + return 0; + if (lnmode) { + struct sbuf sb = {0}; + for (i = 0; i < cnt; i++) + sbuf_str(&sb, buf); + if (cmd == 'p' && lbuf_len(xb)) + xrow++; + lbuf_edit(xb, sbuf_buf(&sb), xrow, xrow); + lncnt = linecount(sbuf_buf(&sb)); + xoff = lbuf_indents(xb, xrow); + sbuf_free(&sb); + } else { + struct sbuf sb = {0}; + char *ln = xrow < lbuf_len(xb) ? lbuf_get(xb, xrow) : "\n"; + int off = ren_noeol(ln, xoff) + (ln[0] != '\n' && cmd == 'p'); + char *s = uc_sub(ln, 0, off); + sbuf_str(&sb, s); + free(s); + for (i = 0; i < cnt; i++) + sbuf_str(&sb, buf); + s = uc_sub(ln, off, -1); + sbuf_str(&sb, s); + free(s); + lbuf_edit(xb, sbuf_buf(&sb), xrow, xrow + 1); + lncnt = linecount(sbuf_buf(&sb)) - 1; + xoff = off + uc_slen(buf) * cnt - 1; + sbuf_free(&sb); + } + vi_drawfix(xrow, 1, lncnt); + return VC_OK; +} + +static int join_spaces(char *prev, char *next) +{ + int prevlen = strlen(prev); + if (!prev[0]) + return 0; + if (prev[prevlen - 1] == ' ' || next[0] == ')') + return 0; + return prev[prevlen - 1] == '.' ? 2 : 1; +} + +static int vc_join(void) +{ + struct sbuf sb = {0}; + int cnt = vi_arg1 <= 1 ? 2 : vi_arg1; + int beg = xrow; + int end = xrow + cnt; + int off = 0; + int i; + if (!lbuf_get(xb, beg) || !lbuf_get(xb, end - 1)) + return VC_BAD; + for (i = beg; i < end; i++) { + char *ln = lbuf_get(xb, i); + char *lnend = strchr(ln, '\n'); + int spaces; + if (i > beg) + while (ln[0] == ' ' || ln[0] == '\t') + ln++; + spaces = i > beg ? join_spaces(sbuf_buf(&sb), ln) : 0; + off = uc_slen(sbuf_buf(&sb)); + while (spaces--) + sbuf_chr(&sb, ' '); + sbuf_mem(&sb, ln, lnend - ln); + } + sbuf_chr(&sb, '\n'); + lbuf_edit(xb, sbuf_buf(&sb), beg, end); + xoff = off; + sbuf_free(&sb); + vi_drawfix(xrow, end - beg, 1); + return VC_OK; +} + +static int vi_scrollforward(int cnt) +{ + if (xtop >= lbuf_len(xb) - 1) + return 1; + xtop = MIN(lbuf_len(xb) - 1, xtop + cnt); + xrow = MAX(xrow, xtop); + return 0; +} + +static int vi_scrollbackward(int cnt) +{ + if (xtop == 0) + return 1; + xtop = MAX(0, xtop - cnt); + xrow = MIN(xrow, xtop + xrows - 1); + return 0; +} + +static int vc_status(void) +{ + int col = vi_off2col(xb, xrow, xoff); + int c = vi_insert ? 'I' : 'N'; + snprintf(vi_msg, sizeof(vi_msg), + "%c%04d %c %s %s %d C%d", + w_tmp ? '_' : c, xrow + 1, + lbuf_modified(xb) ? 'M' : '-', + ex_path()[0] ? ex_path() : "unnamed", + kmap_map(xkmap, 0), + lbuf_len(xb), ren_cursor(lbuf_get(xb, xrow), col) + 1); + return 0; +} + +static int vc_charinfo(void) +{ + char *c = uc_chr(lbuf_get(xb, xrow), xoff); + if (c) { + char cbuf[8] = ""; + memcpy(cbuf, c, uc_len(c)); + snprintf(vi_msg, sizeof(vi_msg), "<%s> %04x", cbuf, uc_code(c)); + } + return 0; +} + +static int vc_replace(void) +{ + int cnt = MAX(1, vi_arg1); + char *cs = vi_char(vi_read, xkmap); + char *ln = lbuf_get(xb, xrow); + struct sbuf sb = {0}; + char *pos, *end; + int off, i; + if (!ln || !cs) + return VC_BAD; + off = ren_noeol(ln, xoff); + pos = uc_chr(ln, off); + end = uc_chr(pos, cnt); + if (!end || !end[0]) + return VC_BAD; + sbuf_mem(&sb, ln, pos - ln); + for (i = 0; i < cnt; i++) + sbuf_str(&sb, cs); + sbuf_str(&sb, end); + lbuf_edit(xb, sbuf_buf(&sb), xrow, xrow + 1); + if (cs[0] == '\n') { + xrow += cnt; + xoff = 0; + vi_drawfix(xrow - cnt, 1, cnt + 1); + } else { + xoff = off + cnt - 1; + vi_drawfix(xrow, 1, 1); + } + sbuf_free(&sb); + return VC_OK; +} + +static void vi_marksave(void) +{ + lbuf_mark(xb, '\'', xrow, xoff); + lbuf_mark(xb, '`', xrow, xoff); +} + +static int vc_definition(char *ln, int off, int newwin) +{ + char cw[256], kw[256]; + char *s; + int r = 0, o = 0; + int len = 0; + if (uc_word(ln, cw, sizeof(cw), ren_noeol(ln, off), "") != 0) + return 0; + snprintf(kw, sizeof(kw), conf_definition(ex_filetype()), cw); + if (lbuf_search(xb, kw, +1, &r, &o, &len) != 0) { + snprintf(vi_msg, sizeof(vi_msg), "not found <%s>", kw); + return 0; + } + ln = lbuf_get(xb, r); + if ((s = strstr(ln, cw)) != NULL) + o = s - ln; + vi_marksave(); + if (newwin) + vi_wmirror(); + xrow = r; + xoff = o; + return newwin ? VC_ALL : VC_COL; +} + +static int vc_openpath(char *ln, int off, int num, int newwin) +{ + char path[250], ex[256]; + char *sep; + if (uc_word(ln, path, sizeof(path), ren_noeol(ln, off), "-/.:") != 0) + return 0; + if ((sep = strchr(path, ':')) != NULL) + *sep = '\0'; + if (access(path, R_OK) != 0) { + snprintf(vi_msg, sizeof(vi_msg), "cannot open <%s>", path); + return 0; + } + if (newwin) + vi_wmirror(); + snprintf(ex, sizeof(ex), "e %s", path); + if (ex_command(ex)) + return newwin ? VC_ALL : VC_WIN; + if (num && sep && isdigit((unsigned char) sep[1])) { + char *col = strchr(sep + 1, ':'); + int lnum = atoi(sep + 1); + vi_marksave(); + xrow = MIN(MAX(0, lnum - 1), lbuf_len(xb) - 1); + if (col && isdigit((unsigned char) col[1])) + xoff = ren_noeol(lbuf_get(xb, xrow), atoi(col + 1) - 1); + } + return newwin ? VC_ALL : VC_WIN; +} + +static int vc_tag(char *ln, int off, int newwin, int lsp) +{ + char cw[120], ex[128]; + if (lsp && lsp_on()) { + if (newwin) + vi_wmirror(); + ex_command("lspg"); + return newwin ? VC_ALL : VC_WIN; + } + if (uc_word(ln, cw, sizeof(cw), ren_noeol(ln, off), "")) + return 0; + snprintf(ex, sizeof(ex), "ta %s", cw); + vi_marksave(); + if (ex_command(ex) != 0) + return 0; + if (newwin) { + ex_command("po"); + vi_wmirror(); + ex_command(ex); + } + return newwin ? VC_ALL : VC_WIN; +} + +static char rep_cmd[4096]; /* the last command */ +static int rep_len; + +static void vi_repeatset(int save) +{ + int n; + char *cmd = term_cmd(&n); + if (save && n + 1 < sizeof(rep_cmd)) { + memcpy(rep_cmd, cmd, n); + rep_len = n; + rep_cmd[n] = '\0'; + reg_put('.', rep_cmd, 0); + } +} + +static void vc_repeat(void) +{ + int i; + for (i = 0; i < MAX(1, vi_arg1); i++) + term_push(rep_cmd, rep_len); +} + +static void vc_repeatstop(void) +{ + term_pushstop(); +} + +static void vc_execute(void) +{ + static int reg = -1; + int lnmode; + int c = (c = vi_read()) == '\\' ? 0x80 | vi_read() : c; + char *buf = NULL; + int i; + if (TK_INT(c)) + return; + if (c == '@') + c = reg; + reg = c; + if (reg >= 0) + buf = reg_get(reg, &lnmode); + if (buf != NULL) { + for (i = 0; i < MAX(1, vi_arg1); i++) + term_push(buf, strlen(buf)); + } +} + +static int vc_ecmd(int c, int newwin) +{ + char cmd[256]; + char *out; + snprintf(cmd, sizeof(cmd), "%s %c %s %d %d", + conf_ecmd(), c, ex_path(), xrow + 1, xoff + 1); + if ((out = cmd_pipe(cmd, NULL, 1)) == NULL) { + snprintf(vi_msg, sizeof(vi_msg), "command failed"); + return 0; + } + if (!strchr(out, '\n')) { + snprintf(vi_msg, sizeof(vi_msg), "no output"); + free(out); + return 0; + } + if (newwin) + vi_wmirror(); + ex_command(out); + free(out); + return VC_ALL; +} + +/* format a quick leap item; modifies ln and returns a static buffer */ +static char *vi_leapfmt(int id, char *ln) +{ + static char out[128]; + char *path; + int mid = 0, des, sep = 48; + while (ln[mid] && !isspace((unsigned char) ln[mid])) + mid++; + des = ln[mid] ? mid + 1 : mid; + ln[mid] = '\0'; + while (ln[des] && isspace((unsigned char) ln[des])) + des++; + if (!ln[des]) + sep = MIN(mid, 80); + path = mid <= sep ? ln : ln + mid - sep; + if (mid > sep) + path[0] = '-'; + snprintf(out, sizeof(out), "[%d] %-*s %s", id + 1, sep, path, ln + des); + return out; +} + +/* list quick leap items */ +static void vi_leaplist(char *list[], int cnt, int matches, int total, char *mod, char *pos) +{ + char cmd[256]; + int i; + for (i = 0; i < cnt; i++) { + strcpy(cmd, "[-]"); + if (list[i]) { + char ln[256]; + snprintf(ln, sizeof(ln), "%s", list[i]); + snprintf(cmd, sizeof(cmd), "%s", vi_leapfmt(i, ln)); + } + vi_drawquick(cmd, xrows - cnt + i); + } + snprintf(cmd, sizeof(cmd), "LEAP %s (%d/%d) %s", mod, matches, total, pos); + vi_drawquick(cmd, cnt ? xrows - cnt - 1 : xrows); + term_pos(-1, 5); +} + +/* ret>=0: selection index, ret=-1 interrupted */ +static int vi_leap(struct tlist *tls, char *mod, char *pos, int minrows) +{ + char msg[256]; + char kws[256]; + int view[9]; + char *view_s[LEN(view)]; + int i; + kws[0] = '\0'; + minrows = MIN(LEN(view), minrows); + while (1) { + int view_n = tlist_top(tls, view, LEN(view)); + char *kw; + minrows = MAX(minrows, view_n); + for (i = 0; i < LEN(view); i++) + view_s[i] = i < view_n ? tlist_get(tls, view[i]) : NULL; + vi_leaplist(view_s, minrows, tlist_matches(tls), tlist_cnt(tls), mod, pos); + snprintf(msg, sizeof(msg), "Filter (%s): ", kws); + if (!(kw = vi_prompt(msg, &xkmap, NULL))) + return -1; + if (!kw[0]) { + free(kw); + return view_n ? view[0] : -1; + } else if (kw[0] == '\\' && !kw[2] && kw[1] >= '1' && kw[1] <= '9') { + int idx = kw[1] - '1'; + free(kw); + return idx < view_n ? view[idx] : -1; + } + snprintf(strchr(kws, '\0'), sizeof(kws) - strlen(kws), + "%s%s", kws[0] ? "|" : "", kw); + tlist_filt(tls, kw); + free(kw); + } + return -1; +} + +static int vc_quick(int newwin) +{ + char cmd[256]; + struct tlist *tls; + char *ls[32]; + int sel = -1; + int mod = 0, c; + char *pos = ex_path()[0] ? ex_path() : "unnamed"; + int ls_n = ex_list(ls, LEN(ls)); + int minrows = MIN(9, ls_n - 1); + tls = tlist_make(ls + 1, ls_n - 1); + vi_leaplist(ls + 1, minrows, ls_n - 1, ls_n - 1, "BUFF", pos); + term_commit(); + c = vi_read(); + if (c == ',' || c == ';' || c == '=' || c == '*') { + char *name = c == ',' ? "FILE" : "BUFF"; + if (c == '=') + name = "TAGS"; + if (c == '*') + name = "QFIX"; + mod = c; + tlist_free(tls); + if (mod == ';') + tls = tlist_make(ls + 1, ls_n - 1); + if (mod == ',') + tls = tlist_from("ls"); + if (mod == '=') + tls = tlist_tags("tags"); + if (mod == '*') + tls = tlist_str(reg_get('*', NULL)); + if (tls) + sel = vi_leap(tls, name, pos, minrows); + } else if (c >= '1' && c <= '9') { + sel = c - '1'; + } + led_reset(&vi_ledmod); + cmd[0] = '\0'; + if (sel >= 0 && sel < tlist_cnt(tls)) + snprintf(cmd, sizeof(cmd), "%s", tlist_get(tls, sel)); + if (tls) + tlist_free(tls); + if (cmd[0] && mod == '=') + return vc_tag(cmd, 0, newwin, 0) | VC_WIN; + if (cmd[0]) + return vc_openpath(cmd, 0, 1, newwin) | VC_WIN; + if (isalpha(c) && reg_get(0x80 | c, NULL) != NULL) { + char ra[8] = {'r', 'a', '\\', c}; + if (newwin) + vi_wmirror(); + ex_command(ra); + return VC_ALL; + } + if (isalpha(c)) + return vc_ecmd(c, newwin) != 0 ? VC_ALL : VC_WIN; + return mod || ls_n > 1 ? VC_WIN : 0; +} + +static int vc_jumpglob(int mark, int lnmode) +{ + char cmd[16]; + int mod = 0; + int mark_row, mark_off; + if (mark <= 0 || mark >= LEN(glob_id) || glob_id[mark] <= 0) + return 0; + vi_marksave(); + if (glob_id[mark] != ex_id()) { + snprintf(cmd, sizeof(cmd), "b %d", glob_id[mark]); + if (ex_command(cmd)) + return 0; + mod = VC_WIN; + } + if (!lbuf_jump(xb, mark, &mark_row, &mark_off)) { + xrow = mark_row; + xoff = lnmode ? 0 : mark_off; + } + return VC_COL | mod; +} + +static void sigwinch(int signo) +{ + vi_back(TK_CTL('l')); + vi_back(TK_CTL('c')); +} + +static void vi(void) +{ + int xcol; + int mark; + char *ln; + int kmap = 0; + signal(SIGWINCH, sigwinch); + vi_switch(0); + xtop = MAX(0, xrow - xrows / 2); + xoff = 0; + xcol = vi_off2col(xb, xrow, xoff); + vi_drawagain(xcol, -1); + term_pos(xrow - xtop, vi_pos(lbuf_get(xb, xrow), xcol)); + term_commit(); + vi_pending = 0; + while (!xquit) { + int mod = 0; + int nrow = xrow; + int noff = ren_noeol(lbuf_get(xb, xrow), xoff); + int otop = xtop; + int oleft = xleft; + int orow = xrow; + char *opath = ex_path(); /* do not dereference; to detect buffer changes */ + int mv = 0, n, ru; + if (!vi_insert) { + term_cmd(&n); + vi_arg2 = 0; + vi_ybuf = vi_yankbuf(); + vi_arg1 = vi_prefix(); + if (!vi_ybuf) + vi_ybuf = vi_yankbuf(); + mv = vi_motion(&nrow, &noff); + } + if (vi_insert) { + mod = vc_insertcmd(); + if (!vi_insert) + vi_repeatset(1); + if (!vi_insert) + glob_id['*'] = ex_id(); + } else if (mv > 0) { + if (strchr("\'`GHML/?{}[]nN", mv) || (mv == '%' && noff < 0)) + vi_marksave(); + xrow = nrow; + if (noff < 0 && !strchr("jk", mv)) + noff = lbuf_indents(xb, xrow); + if (strchr("jk", mv)) + noff = vi_col2off(xb, xrow, xcol); + xoff = ren_noeol(lbuf_get(xb, xrow), noff); + if (!strchr("|jk", mv)) + xcol = vi_off2col(xb, xrow, xoff); + if (mv == '|') + xcol = vi_pcol; + } else if (mv < 0) { + mod = VC_BAD; + } else { + int c = vi_read(); + int k = 0; + if (c <= 0) + continue; + lbuf_mark(xb, '^', xrow, xoff); + switch (c) { + case TK_CTL('b'): + if (vi_scrollbackward(MAX(1, vi_arg1) * (xrows - 1))) + break; + xoff = lbuf_indents(xb, xrow); + mod = VC_COL; + break; + case TK_CTL('f'): + if (vi_scrollforward(MAX(1, vi_arg1) * (xrows - 1))) + break; + xoff = lbuf_indents(xb, xrow); + mod = VC_COL; + break; + case TK_CTL('e'): + if (vi_scrollforward(MAX(1, vi_arg1))) + break; + xoff = vi_col2off(xb, xrow, xcol); + break; + case TK_CTL('y'): + if (vi_scrollbackward(MAX(1, vi_arg1))) + break; + xoff = vi_col2off(xb, xrow, xcol); + break; + case TK_CTL('u'): + if (xrow == 0) + break; + if (vi_arg1) + vi_scroll = vi_arg1; + n = vi_scroll ? vi_scroll : xrows / 2; + xrow = MAX(0, xrow - n); + if (xtop > 0) + xtop = MAX(0, xtop - n); + xoff = lbuf_indents(xb, xrow); + mod = VC_COL; + break; + case TK_CTL('d'): + if (xrow == lbuf_len(xb) - 1) + break; + if (vi_arg1) + vi_scroll = vi_arg1; + n = vi_scroll ? vi_scroll : xrows / 2; + xrow = MIN(MAX(0, lbuf_len(xb) - 1), xrow + n); + if (xtop < lbuf_len(xb) - xrows) + xtop = MIN(lbuf_len(xb) - xrows, xtop + n); + xoff = lbuf_indents(xb, xrow); + mod = VC_COL; + break; + case TK_CTL('z'): + term_pos(xrows, 0); + term_suspend(); + mod = VC_ALL; + break; + case 'u': + if (!lbuf_undo(xb)) { + lbuf_jump(xb, '^', &xrow, &xoff); + mod = VC_WIN; + } else { + snprintf(vi_msg, sizeof(vi_msg), "undo failed"); + } + break; + case TK_CTL('r'): + if (!lbuf_redo(xb)) { + lbuf_jump(xb, '^', &xrow, &xoff); + mod = VC_WIN; + } else { + snprintf(vi_msg, sizeof(vi_msg), "redo failed"); + } + break; + case TK_CTL('g'): + vc_status(); + break; + case TK_CTL('^'): + ex_command("e #"); + mod = VC_WIN; + break; + case TK_CTL(']'): + mod = vc_tag(lbuf_get(xb, xrow), xoff, 0, 1); + break; + case TK_CTL('t'): + if (!ex_command("pop")) { + vi_marksave(); + mod = VC_WIN; + } + break; + case TK_CTL('w'): + k = vi_read(); + if (k == 's') + if (!vi_wsplit()) + mod = VC_ALL; + if (k == 'j' || k == 'k') { + if (w_cnt > 1) { + vi_switch(1 - w_cur); + mod = VC_ALL; + } + } + if (k == 'o') + if (!vi_wonly()) + mod = VC_WIN; + if (k == 'c') + if (!vi_wclose()) + mod = VC_WIN; + if (k == 'x') + if (!vi_wswap()) + mod = VC_ALL; + if (k == TK_CTL(']') || k == ']') + mod = vc_tag(lbuf_get(xb, xrow), xoff, 1, 1); + if (k == 'g') { + char *ln = lbuf_get(xb, xrow); + int j = vi_read(); + if (j == 'f' || j == 'l') + mod = vc_openpath(ln, xoff, j == 'l', 1); + if (j == 'd') + mod = vc_definition(ln, xoff, 1); + } + if (k == 'q') + mod = vc_quick(1); + break; + case ':': + ln = vi_prompt(":", &kmap, reg_getln(':')); + if (ln && ln[0]) { + reg_putln(':', ln); + if (ln[0] != ':') { + char *ln2 = uc_cat(":", ln); + free(ln); + ln = ln2; + } + if (!ex_command(ln) && strcmp(ln, ":w")) + mod = VC_ALL; + reg_put(':', ln, 1); + } + free(ln); + if (xquit) + continue; + break; + case 'c': + case 'd': + case 'y': + case '!': + case '>': + case '<': + mod = vc_motion(c); + break; + case 'i': + case 'I': + case 'a': + case 'A': + case 'o': + case 'O': + mod = vc_insert(c); + break; + case 'J': + mod = vc_join(); + break; + case TK_CTL('l'): + term_done(); + term_init(); + mod = VC_ALL; + break; + case 'm': + if ((mark = vi_read()) > 0 && isalpha(mark)) { + if (isupper(mark)) + glob_id[tolower(mark)] = ex_id(); + lbuf_mark(xb, tolower(mark), xrow, xoff); + } + break; + case 'p': + case 'P': + mod = vc_put(c); + break; + case 'z': + k = vi_read(); + switch (k) { + case '\n': + xtop = vi_arg1 ? vi_arg1 : xrow; + break; + case '.': + n = vi_arg1 ? vi_arg1 : xrow; + xtop = MAX(0, n - xrows / 2); + break; + case '-': + n = vi_arg1 ? vi_arg1 : xrow; + xtop = MAX(0, n - xrows + 1); + break; + case '>': + case '<': + xtd = 0; + if (vi_arg1 <= 2) + xtd = k == '>' ? MAX(1, vi_arg1) : -MAX(1, vi_arg1); + mod = VC_WIN; + break; + case 'e': + case 'f': + xkmap = k == 'e' ? 0 : xkmap_alt; + break; + case 'j': + case 'k': + if (!ex_command(k == 'j' ? "b +" : "b -")) + mod = VC_WIN; + break; + case 'J': + case 'K': + if (!ex_command(k == 'J' ? "next" : "prev")) + mod = VC_WIN; + break; + case 'D': + if (!ex_command("b !")) + mod = VC_WIN; + break; + } + break; + case 'g': + ln = lbuf_get(xb, xrow); + k = vi_read(); + if (k == '~' || k == 'u' || k == 'U') + mod = vc_motion(k); + if (k == 'a') + mod = vc_charinfo(); + if (k == 'd') + mod = vc_definition(ln, xoff, 0); + if (k == 'f' || k == 'l') + mod = vc_openpath(ln, xoff, k == 'l', 0); + if (k == '\'' || k == '`') + mod = vc_jumpglob(vi_read(), k == '\''); + break; + case 'x': + vi_back(' '); + mod = vc_motion('d'); + break; + case 'X': + vi_back(TK_CTL('h')); + mod = vc_motion('d'); + break; + case 'C': + vi_back('$'); + mod = vc_motion('c'); + break; + case 'D': + vi_back('$'); + mod = vc_motion('d'); + break; + case 'q': + mod = vc_quick(0); + break; + case 'r': + mod = vc_replace(); + break; + case 's': + vi_back(' '); + mod = vc_motion('c'); + break; + case 'S': + vi_back('c'); + mod = vc_motion('c'); + break; + case 'Y': + vi_back('y'); + mod = vc_motion('y'); + break; + case 'Z': + k = vi_read(); + if (k == 'Z') + if (!ex_command("x")) + mod = VC_WIN; + break; + case '~': + vi_back(' '); + mod = vc_motion('~'); + break; + case '.': + vc_repeat(); + break; + case '@': + vc_execute(); + break; + case TK_ESC: + vi_readiseq(); + continue; + default: + continue; + } + if (!vi_insert) { + int changecmd = strchr("!<>ACDIJOPRSXYacdioprsxy~", c) || + (c == 'g' && strchr("uU~", k)); + vi_repeatset(changecmd && !(mod & VC_BAD)); + if (changecmd) + glob_id['*'] = ex_id(); + } + } + if (mod & VC_BAD) + vc_repeatstop(); + if (mod & VC_OK) + otop = xtop; + vi_wfix(); + if (mod & ~VC_BAD) + xcol = vi_off2col(xb, xrow, xoff); + if (xcol >= xleft + xcols) + xleft = xcol - xcols / 2; + if (xcol < xleft) + xleft = xcol < xcols ? 0 : xcol - xcols / 2; + if (vi_wait()) + vi_pending = 0; + ru = (xru & 1) || ((xru & 2) && w_cnt > 1) || ((xru & 4) && opath != ex_path()); + if (mod & VC_ALT && w_cnt == 1) + vi_switch(w_cur); + if (mod & VC_ALT && w_cnt > 1) { + int pending = vi_pending; + int id = w_cur; + w_tmp = 1; + vi_switch(1 - id); + vi_wfix(); + vi_pending = 0; + led_reset(&vi_ledmod); + if (ru) + vc_status(); + led_reset(&vi_ledmod); + vi_drawagain(vi_off2col(xb, xrow, xoff), -1); + vi_pending = pending; + w_tmp = 0; + vi_switch(id); + } + if (mod & VC_WIN) + led_reset(&vi_ledmod); + if (ru && !vi_msg[0] && !vi_pending) + vc_status(); + if (mod & (VC_ROW | VC_WIN) || xleft != oleft) { + int lineonly = mod & VC_ROW && xleft == oleft && xtop == otop; + vi_drawagain(xcol, lineonly ? xrow : -1); + if (lineonly && xrow != orow) + vi_drawagain(xcol, orow); + } else { + if (xtop != otop) + vi_drawupdate(otop); + if (xhll && xrow != orow && orow >= xtop && orow < xtop + xrows) + vi_drawrow(orow); + if (xhll && xrow != orow) + vi_drawrow(xrow); + if (vi_msg[0]) + vi_drawmsg(); + } + vi_pending = 0; + ln = lbuf_get(xb, xrow); + if (vi_insert) + term_pos(xrow - xtop, vi_pos(ln, ren_insert(ln, xoff))); + else + term_pos(xrow - xtop, vi_pos(ln, ren_cursor(ln, xcol))); + term_commit(); + if (!vi_insert) + lbuf_tx(xb); + } + led_reset(&vi_ledmod); + led_reset(&vi_ledins); +} + +int main(int argc, char *argv[]) +{ + int i; + char *prog = strchr(argv[0], '/') ? strrchr(argv[0], '/') + 1 : argv[0]; + xvis = strcmp("ex", prog) && strcmp("neatex", prog); + for (i = 1; i < argc && argv[i][0] == '-'; i++) { + if (argv[i][1] && !argv[i][2]) { + switch (argv[i][1]) { + case 's': + continue; + case 'e': + xvis = 0; + continue; + case 'v': + xvis = 1; + continue; + case 'h': + printf("usage: %s [options] [file...]\n\n", argv[0]); + printf("options:\n"); + printf(" -v start in vi mode\n"); + printf(" -e start in ex mode\n"); + return 0; + } + } + fprintf(stderr, "%s: unknown option: %s\n", argv[0], argv[i]); + return 1; + } + dir_init(); + syn_init(); + tag_init(); + if (xvis) + term_init(); + signal(SIGPIPE, SIG_IGN); + if (!ex_init(argv + i)) { + if (xvis) + vi(); + else + ex(); + ex_done(); + } + if (xvis) + term_done(); + free(w_path); + reg_done(); + syn_done(); + dir_done(); + tag_done(); + return 0; +} diff --git a/Apps/Neatvi/main/Source/vi.h b/Apps/Neatvi/main/Source/vi.h new file mode 100644 index 0000000..105ba70 --- /dev/null +++ b/Apps/Neatvi/main/Source/vi.h @@ -0,0 +1,268 @@ +/* neatvi main header */ + +/* helper macros */ +#define LEN(a) (sizeof(a) / sizeof((a)[0])) +#define MIN(a, b) ((a) < (b) ? (a) : (b)) +#define MAX(a, b) ((a) < (b) ? (b) : (a)) + +/* line buffer, managing a number of lines */ +struct lbuf *lbuf_make(void); +void lbuf_free(struct lbuf *lbuf); +int lbuf_rd(struct lbuf *lbuf, int fd, int beg, int end); +int lbuf_wr(struct lbuf *lbuf, int fd, int beg, int end); +void lbuf_edit(struct lbuf *lbuf, char *s, int beg, int end); +void lbuf_tx(struct lbuf *lbuf); +char *lbuf_cp(struct lbuf *lbuf, int beg, int end); +char *lbuf_get(struct lbuf *lbuf, int pos); +int lbuf_len(struct lbuf *lbuf); +void lbuf_mark(struct lbuf *lbuf, int mark, int pos, int off); +int lbuf_jump(struct lbuf *lbuf, int mark, int *pos, int *off); +int lbuf_undo(struct lbuf *lbuf); +int lbuf_redo(struct lbuf *lbuf); +int lbuf_modified(struct lbuf *lb); +void lbuf_saved(struct lbuf *lb, int clear); +int lbuf_indents(struct lbuf *lb, int r); +int lbuf_eol(struct lbuf *lb, int r); +void lbuf_globset(struct lbuf *lb, int pos, int dep); +int lbuf_globget(struct lbuf *lb, int pos, int dep); +/* motions */ +int lbuf_findchar(struct lbuf *lb, char *cs, int cmd, int n, int *r, int *o); +int lbuf_search(struct lbuf *lb, char *kw, int dir, int *r, int *o, int *len); +int lbuf_paragraphbeg(struct lbuf *lb, int dir, int *row, int *off); +int lbuf_sectionbeg(struct lbuf *lb, int dir, char *sec, int *row, int *off); +int lbuf_wordbeg(struct lbuf *lb, int big, int dir, int *row, int *off); +int lbuf_wordend(struct lbuf *lb, int big, int dir, int *row, int *off); +int lbuf_pair(struct lbuf *lb, int *row, int *off); + +/* string buffer, variable-sized string */ +struct sbuf { + char *s; /* allocated buffer */ + long s_sz; /* size of memory allocated for s[] */ + long s_n; /* length of the string stored in s[] */ + int owns; /* s is allocated and owned by sbuf */ +}; +void sbuf_free(struct sbuf *sb); +char *sbuf_done(struct sbuf *sb); +char *sbuf_buf(struct sbuf *sb); +int sbuf_chr(struct sbuf *sb, int c); +int sbuf_str(struct sbuf *sb, char *s); +int sbuf_mem(struct sbuf *sb, void *s, long len); +int sbuf_printf(struct sbuf *sbuf, char *s, ...); +long sbuf_len(struct sbuf *sb); +void sbuf_cut(struct sbuf *s, long len); + +/* regular expressions */ +#define RE_ICASE 1 +#define RE_NOTBOL 2 +#define RE_NOTEOL 4 +/* regular expression sets: searching for multiple regular expressions */ +struct rset *rset_make(int n, char **pat, int flg); +int rset_find(struct rset *re, char *s, int n, int *grps, int flg); +void rset_free(struct rset *re); +char *re_read(char **src); +/* searching for a single pattern regular expression */ +struct rstr *rstr_make(char *re, int flg); +int rstr_find(struct rstr *rs, char *s, int n, int *grps, int flg); +void rstr_free(struct rstr *rs); + +/* rendering lines */ +int *ren_position(char *s, int n); +int ren_next(char *s, int p, int dir); +int ren_eol(char *s, int dir); +int ren_pos(char *s, int off); +int ren_cursor(char *s, int pos); +int ren_insert(char *s, int pos); +int ren_noeol(char *s, int p); +int ren_off(char *s, int pos); +int ren_wid(char *s); +int ren_region(char *s, int c1, int c2, int *l1, int *l2, int closed); +char *ren_translate(char *s, char *ln); +int ren_cwid(char *s, int pos); + +/* text direction */ +int dir_context(char *s); +void dir_reorder(char *s, int *ord); +void dir_init(void); +void dir_done(void); + +/* string registers */ +char *reg_get(int c, int *lnmode); +void reg_put(int c, char *s, int lnmode); +void reg_done(void); + +/* utf-8 helper functions */ +int uc_len(char *s); +int uc_len_expect(char c); +int uc_wid(char *s); +int uc_slen(char *s); +int uc_code(char *s); +char *uc_chr(char *s, int off); +int uc_off(char *s, int off); +char *uc_sub(char *s, int beg, int end); +char *uc_dup(char *s); +char *uc_cat(char *s, char *r); +int uc_isspace(char *s); +int uc_isprint(char *s); +int uc_isdigit(char *s); +int uc_isalpha(char *s); +int uc_kind(char *c); +int uc_isbell(char *c); +int uc_iscomb(char *c); +char **uc_chop(char *s, int *n); +char *uc_next(char *s); +char *uc_prev(char *beg, char *s); +char *uc_beg(char *beg, char *s); +char *uc_shape(char *beg, char *s); +char *uc_lastline(char *s); +int uc_word(char *ln, char *dst, int len, int off, char *ext); + +/* managing the terminal */ +#define xrows (term_rows()) +#define xcols (term_cols()) + +void term_init(void); +void term_done(void); +void term_suspend(void); +void term_str(char *s); +void term_chr(int ch); +void term_pos(int r, int c); +void term_clear(void); +void term_kill(void); +void term_room(int n); +void term_window(int row, int cnt); +int term_rows(void); +int term_cols(void); +int term_rowx(void); +int term_read(int buffered); +void term_commit(void); +char *term_seqattr(int att, int old); +char *term_seqkill(void); +void term_push(char *s, int n); +void term_pushstop(void); +char *term_cmd(int *n); + +#define TK_CTL(x) ((x) & 037) +#define TK_INT(c) ((c) < 0 || (c) == TK_ESC || (c) == TK_CTL('c')) +#define TK_ESC (TK_CTL('[')) + +/* line-oriented input and output */ +char *led_prompt(char *pref, char *post, int *kmap, char *syn, char *hist); +void led_print(char *s0, int row, int cbeg, int cols, char *syn, char **old); +void led_reset(char **old); + +/* ex commands */ +void ex(void); +int ex_command(char *cmd); +char *ex_read(char *msg); +void ex_print(char *line); +void ex_show(char *msg, ...); +int ex_init(char **files); +void ex_done(void); +char *ex_path(void); +char *ex_filetype(void); +struct lbuf *ex_lbuf(void); +int ex_kwd(char **kwd, int *dir); +void ex_kwdset(char *kwd, int dir); +int ex_list(char **ls, int size); +int ex_id(void); + +#define EXLEN 512 /* ex line length */ +#define xb ex_lbuf() + +/* process management */ +char *cmd_pipe(char *cmd, char *ibuf, int oproc); +char *cmd_unix(char *path, char *ibuf); +int cmd_exec(char *cmd); + +/* syntax highlighting */ +#define SYN_BD 0x010000 +#define SYN_IT 0x020000 +#define SYN_RV 0x040000 +#define SYN_HP 0x400000 +#define SYN_LP 0x800000 +#define SYN_FGMK(f) (0x100000 | (f)) +#define SYN_BGMK(b) (0x200000 | ((b) << 8)) + +#define SYN_FLG 0x7f0000 +#define SYN_FGSET(a) ((a) & 0x1000ff) +#define SYN_BGSET(a) ((a) & 0x20ff00) +#define SYN_FG(a) ((a) & 0xff) +#define SYN_BG(a) (((a) >> 8) & 0xff) +#define SYN_RANK(c) (((c) & SYN_HP) - ((c) & SYN_LP)) + +int *syn_highlight(char *ft, char *s); +char *syn_filetype(char *path); +void syn_context(int fg, int bg); +int syn_merge(int old, int new); +void syn_init(void); +void syn_done(void); + +/* configuration variables */ +int conf_dirmark(int idx, char **pat, int *ctx, int *dir, int *grp); +int conf_dircontext(int idx, char **pat, int *ctx); +int conf_highlight(int idx, char **ft, int **att, char **pat, int *end); +int conf_filetype(int idx, char **ft, char **pat); +int conf_mode(void); +char *conf_digraph(int c1, int c2); +char *conf_definition(char *ft); +char *conf_section(char *ft); +char *conf_ecmd(void); +int conf_hl(int id); +int conf_hlnum(char *hl); +void conf_hlset(int id, int hl); +char *kmap_map(int id, int key); +void kmap_def(int id, int key, char *def); +int kmap_find(char *name); +char *mapch_get(char *s, int *wid); +void mapch_def(char *s, char *d, int wid); + +/* global variables */ +extern int xrow; +extern int xoff; +extern int xtop; +extern int xleft; +extern int xvis; +extern int xquit; +extern int xic; +extern int xai; +extern int xtd; +extern int xshape; +extern int xorder; +extern int xhl; +extern int xhll; +extern int xkmap; +extern int xkmap_alt; +extern int xlim; +extern int xru; +extern int xhist; +extern int xvte; +extern int xts; + +/* tag file handling */ +int tag_init(void); +int tag_find(char *name, int *pos, int dir, char *path, int pathlen, char *cmd, int cmdlen); +void tag_done(void); +/* tag lists */ +struct tlist *tlist_make(char *ls[], int ls_n); +struct tlist *tlist_from(char *path); +struct tlist *tlist_tags(char *path); +struct tlist *tlist_str(char *str); +void tlist_free(struct tlist *tls); +void tlist_filt(struct tlist *tls, char *kw); +char *tlist_get(struct tlist *tls, int idx); +int tlist_cnt(struct tlist *tls); +int tlist_matches(struct tlist *tls); +int tlist_top(struct tlist *tls, int *view, int view_sz); +/* quick fix list */ +int qfix_current(char *dst, int dstlen, int *row, int *off, char *txt, int txtlen); +int qfix_next(void); +int qfix_prev(void); +void qfix_reset(void); +/* LSP client */ +int lsp_init(char *cmd[]); +void lsp_done(void); +int lsp_on(void); +void lsp_modified(char *path, char *ft); +int lsp_definition(char *path, int row, int off, char *ft, char *dst, int dstlen, int *drow, int *doff); +char *lsp_find(char *path, int row, int off, char *ft); +char *lsp_hover(char *path, int row, int off, char *ft); diff --git a/Apps/Neatvi/manifest.properties b/Apps/Neatvi/manifest.properties new file mode 100644 index 0000000..e8feb16 --- /dev/null +++ b/Apps/Neatvi/manifest.properties @@ -0,0 +1,15 @@ +manifest.version=0.3 +target.sdk=0.8.0-dev +target.platforms=esp32,esp32s3,esp32c6,esp32p4,posix-x86_64 +id=tactility.neatvi +version.name=0.2.0 +version.code=2 +requires.ram=2M +name=Vi +description=Neatvi text editor +app.0.id=tactility.neatvi +app.0.name=Neatvi +app.0.binary=vi +app.0.hidden=true +app.0.headless=true +app.0.stack.depth=8192 diff --git a/Apps/Vi/main/Source/main.c b/Apps/Vi/main/Source/main.c deleted file mode 100644 index 1e602a7..0000000 --- a/Apps/Vi/main/Source/main.c +++ /dev/null @@ -1,8 +0,0 @@ -/* - * Licensed under GPLv2, see file LICENSE in this app's directory. - */ -int vi_main(int argc, char** argv); - -int main(int argc, char* argv[]) { - return vi_main(argc, argv); -} From 9d182220d571a0ba89c0fcb1f42e096b4b29bc39 Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Thu, 1 Oct 2026 20:02:50 +0200 Subject: [PATCH 06/11] Fixes --- Apps/BusyBoxVi/main/Source/libbb.c | 7 +++++-- Apps/BusyBoxVi/main/Source/main.c | 11 ++++++++++- Apps/Neatvi/main/Source/conf.c | 8 +++++++- Apps/Neatvi/main/Source/ex.c | 4 +++- 4 files changed, 25 insertions(+), 5 deletions(-) diff --git a/Apps/BusyBoxVi/main/Source/libbb.c b/Apps/BusyBoxVi/main/Source/libbb.c index 97cce47..df266da 100644 --- a/Apps/BusyBoxVi/main/Source/libbb.c +++ b/Apps/BusyBoxVi/main/Source/libbb.c @@ -338,14 +338,17 @@ void bb_putchar(int ch) { /* region Errors */ +/* exit() would terminate the whole device, so dying unwinds to main() instead */ +jmp_buf bb_die_jmp; + void bb_show_usage(void) { fputs("Usage: vi [-c CMD] [-R] [-H] [FILE]...\n", stderr); - exit(EXIT_FAILURE); + longjmp(bb_die_jmp, 1); } void bb_simple_error_msg_and_die(const char* s) { fprintf(stderr, "%s: %s\n", applet_name, s); - exit(EXIT_FAILURE); + longjmp(bb_die_jmp, 1); } /* endregion */ diff --git a/Apps/BusyBoxVi/main/Source/main.c b/Apps/BusyBoxVi/main/Source/main.c index 6649265..588e906 100644 --- a/Apps/BusyBoxVi/main/Source/main.c +++ b/Apps/BusyBoxVi/main/Source/main.c @@ -1,11 +1,20 @@ /* * Licensed under GPLv2, see file LICENSE in this app's directory. */ +#include +#include + int vi_main(int argc, char** argv); void bb_free_all(void); +extern jmp_buf bb_die_jmp; int main(int argc, char* argv[]) { - int result = vi_main(argc, argv); + int result; + if (setjmp(bb_die_jmp) == 0) { + result = vi_main(argc, argv); + } else { + result = EXIT_FAILURE; + } /* vi leaves its buffers to process exit, which an app instance doesn't have */ bb_free_all(); return result; diff --git a/Apps/Neatvi/main/Source/conf.c b/Apps/Neatvi/main/Source/conf.c index 5621dd2..adf71ef 100644 --- a/Apps/Neatvi/main/Source/conf.c +++ b/Apps/Neatvi/main/Source/conf.c @@ -176,7 +176,13 @@ void kmap_def(int id, int key, char *def) { static char defs[512]; static int defs_pos; - int len = strlen(def) + 1; + int len; + if (!def) { + if (id >= 0 && id < LEN(kmaps) && key >= 0 && key < 256) + kmaps[id][key] = NULL; + return; + } + len = strlen(def) + 1; if (id >= 0 && id < LEN(kmaps) && key >= 0 && key < 256) { if (len < sizeof(defs) - defs_pos) { memcpy(defs + defs_pos, def, len); diff --git a/Apps/Neatvi/main/Source/ex.c b/Apps/Neatvi/main/Source/ex.c index d4c0207..e5f82c9 100644 --- a/Apps/Neatvi/main/Source/ex.c +++ b/Apps/Neatvi/main/Source/ex.c @@ -956,6 +956,8 @@ static int ec_highlight(char *loc, char *cmd, char *arg, char *txt) int mode = 0; if (!name) return 1; + if (!attr) + attr = ""; if (strchr(attr, 'b')) mode |= SYN_BD; if (strchr(attr, 'i')) @@ -1335,7 +1337,7 @@ static int ec_source(char *loc, char *cmd, char *arg, char *txt) char *path = arg[0] ? ex_pathexpand(arg, 1) : ex_path(); char buf[1 << 10]; struct sbuf sb = {0}; - int fd = path[0] ? open(path, O_RDONLY) : -1; + int fd = path && path[0] ? open(path, O_RDONLY) : -1; long nr; if (fd < 0) return 1; From 932323a3542e4afba02c5613493a53b946c96aab Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Thu, 1 Oct 2026 22:01:26 +0200 Subject: [PATCH 07/11] Cleanup fix --- Apps/BusyBoxVi/main/Source/main.c | 2 ++ Apps/BusyBoxVi/main/Source/vi.c | 11 +++++++++++ 2 files changed, 13 insertions(+) diff --git a/Apps/BusyBoxVi/main/Source/main.c b/Apps/BusyBoxVi/main/Source/main.c index 588e906..0555dbc 100644 --- a/Apps/BusyBoxVi/main/Source/main.c +++ b/Apps/BusyBoxVi/main/Source/main.c @@ -6,6 +6,7 @@ int vi_main(int argc, char** argv); void bb_free_all(void); +void vi_cleanup(void); extern jmp_buf bb_die_jmp; int main(int argc, char* argv[]) { @@ -13,6 +14,7 @@ int main(int argc, char* argv[]) { if (setjmp(bb_die_jmp) == 0) { result = vi_main(argc, argv); } else { + vi_cleanup(); result = EXIT_FAILURE; } /* vi leaves its buffers to process exit, which an app instance doesn't have */ diff --git a/Apps/BusyBoxVi/main/Source/vi.c b/Apps/BusyBoxVi/main/Source/vi.c index 34932f6..e8c0a8f 100644 --- a/Apps/BusyBoxVi/main/Source/vi.c +++ b/Apps/BusyBoxVi/main/Source/vi.c @@ -626,16 +626,27 @@ static int mysleep(int hund) } //----- Set terminal attributes -------------------------------- +static bool termios_saved; + static void rawmode(void) { // no TERMIOS_CLEAR_ISIG: leave ISIG on - allow signals set_termios_to_raw(STDIN_FILENO, &term_orig, TERMIOS_RAW_CRNL); + termios_saved = true; } static void cookmode(void) { + if (!termios_saved) + return; fflush_all(); tcsetattr_stdin_TCSANOW(&term_orig); + termios_saved = false; +} + +void vi_cleanup(void) +{ + cookmode(); } //----- Terminal Drawing --------------------------------------- From 123ce67cd6ca0c36c57da0f10987ec0693dd1149 Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Sat, 3 Oct 2026 17:14:06 +0200 Subject: [PATCH 08/11] Add signals --- Apps/Neatvi/main/Source/vi.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Apps/Neatvi/main/Source/vi.c b/Apps/Neatvi/main/Source/vi.c index 1541756..fba3863 100644 --- a/Apps/Neatvi/main/Source/vi.c +++ b/Apps/Neatvi/main/Source/vi.c @@ -1771,6 +1771,12 @@ static void sigwinch(int signo) vi_back(TK_CTL('c')); } +/* the terminal went away: leave the editing loop, so cleanup runs */ +static void sighup(int signo) +{ + xquit = 1; +} + static void vi(void) { int xcol; @@ -2217,6 +2223,8 @@ int main(int argc, char *argv[]) if (xvis) term_init(); signal(SIGPIPE, SIG_IGN); + signal(SIGHUP, sighup); + signal(SIGTERM, sighup); if (!ex_init(argv + i)) { if (xvis) vi(); From f5c5b0dea27321194d8f24e1027aa408c1492900 Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Sat, 3 Oct 2026 19:01:54 +0200 Subject: [PATCH 09/11] Fix --- Apps/BusyBoxVi/main/Source/vi.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Apps/BusyBoxVi/main/Source/vi.c b/Apps/BusyBoxVi/main/Source/vi.c index e8c0a8f..a5af638 100644 --- a/Apps/BusyBoxVi/main/Source/vi.c +++ b/Apps/BusyBoxVi/main/Source/vi.c @@ -644,8 +644,16 @@ static void cookmode(void) termios_saved = false; } +// Set while the alternate screen buffer is in use, so vi_cleanup() can leave it +static smallint alt_screen_active; + void vi_cleanup(void) { + if (alt_screen_active) { + // "Use normal screen buffer, restore cursor" + write1(ESC"[?1049l"); + alt_screen_active = 0; + } cookmode(); } @@ -5048,6 +5056,7 @@ int vi_main(int argc, char **argv) #endif // "Save cursor, use alternate screen buffer, clear screen" write1(ESC"[?1049h"); + alt_screen_active = 1; // This is the main file handling loop optind = 0; while (1) { @@ -5059,6 +5068,7 @@ int vi_main(int argc, char **argv) } // "Use normal screen buffer, restore cursor" write1(ESC"[?1049l"); + alt_screen_active = 0; return 0; } From 1251b8440646bc1ee04ce366db68c94276fdae15 Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Sat, 3 Oct 2026 23:15:01 +0200 Subject: [PATCH 10/11] Fix --- Apps/Neatvi/main/Source/ex.c | 2 +- Apps/Neatvi/main/Source/term.c | 2 ++ Apps/Neatvi/main/Source/vi.h | 3 ++- 3 files changed, 5 insertions(+), 2 deletions(-) diff --git a/Apps/Neatvi/main/Source/ex.c b/Apps/Neatvi/main/Source/ex.c index e5f82c9..5e1ebc8 100644 --- a/Apps/Neatvi/main/Source/ex.c +++ b/Apps/Neatvi/main/Source/ex.c @@ -11,7 +11,7 @@ int xrow, xoff, xtop; /* current row, column, and top row */ int xleft; /* the first visible column */ -int xquit; /* exit if set */ +volatile sig_atomic_t xquit; /* exit if set */ int xvis; /* visual mode */ int xai = 1; /* autoindent option */ int xic = 1; /* ignorecase option */ diff --git a/Apps/Neatvi/main/Source/term.c b/Apps/Neatvi/main/Source/term.c index 9bb855c..bd87ae8 100644 --- a/Apps/Neatvi/main/Source/term.c +++ b/Apps/Neatvi/main/Source/term.c @@ -175,6 +175,8 @@ int term_read(int buffered) { struct pollfd ufds[1]; int n, c; + if (xquit) /* a signal asked to quit: do not block */ + return -1; if (!buffered && ibuf_pos >= ibuf_cnt && istd_pos >= istd_cnt) { ufds[0].fd = 0; ufds[0].events = POLLIN; diff --git a/Apps/Neatvi/main/Source/vi.h b/Apps/Neatvi/main/Source/vi.h index 105ba70..aa4757c 100644 --- a/Apps/Neatvi/main/Source/vi.h +++ b/Apps/Neatvi/main/Source/vi.h @@ -1,4 +1,5 @@ /* neatvi main header */ +#include /* helper macros */ #define LEN(a) (sizeof(a) / sizeof((a)[0])) @@ -222,7 +223,7 @@ extern int xoff; extern int xtop; extern int xleft; extern int xvis; -extern int xquit; +extern volatile sig_atomic_t xquit; extern int xic; extern int xai; extern int xtd; From 08afee0aab00286b0aeac96f03520a99e0b3eb4d Mon Sep 17 00:00:00 2001 From: Ken Van Hoeylandt Date: Sun, 4 Oct 2026 00:04:55 +0200 Subject: [PATCH 11/11] Delete old Vi app --- Apps/Vi/CMakeLists.txt | 13 - Apps/Vi/LICENSE | 348 --- Apps/Vi/README.md | 34 - Apps/Vi/main/CMakeLists.txt | 11 - Apps/Vi/main/Include/libbb.h | 208 -- Apps/Vi/main/Source/libbb.c | 406 --- Apps/Vi/main/Source/main.c | 8 - Apps/Vi/main/Source/read_key.c | 307 -- Apps/Vi/main/Source/vi.c | 5053 -------------------------------- Apps/Vi/manifest.properties | 14 - 10 files changed, 6402 deletions(-) delete mode 100644 Apps/Vi/CMakeLists.txt delete mode 100644 Apps/Vi/LICENSE delete mode 100644 Apps/Vi/README.md delete mode 100644 Apps/Vi/main/CMakeLists.txt delete mode 100644 Apps/Vi/main/Include/libbb.h delete mode 100644 Apps/Vi/main/Source/libbb.c delete mode 100644 Apps/Vi/main/Source/main.c delete mode 100644 Apps/Vi/main/Source/read_key.c delete mode 100644 Apps/Vi/main/Source/vi.c delete mode 100644 Apps/Vi/manifest.properties diff --git a/Apps/Vi/CMakeLists.txt b/Apps/Vi/CMakeLists.txt deleted file mode 100644 index cd22471..0000000 --- a/Apps/Vi/CMakeLists.txt +++ /dev/null @@ -1,13 +0,0 @@ -# tactility-cmakelists-version: 1 -cmake_minimum_required(VERSION 3.20) - -if (NOT DEFINED ENV{TACTILITY_SDK_PATH}) - message(FATAL_ERROR "TACTILITY_SDK_PATH environment variable is not set") -endif() - -get_filename_component(TACTILITY_SDK_PATH "$ENV{TACTILITY_SDK_PATH}" ABSOLUTE) -include("${TACTILITY_SDK_PATH}/TactilitySDK.cmake") - -tactility_project_pre(vi) -project(vi) -tactility_project_post(vi) diff --git a/Apps/Vi/LICENSE b/Apps/Vi/LICENSE deleted file mode 100644 index 6f50a71..0000000 --- a/Apps/Vi/LICENSE +++ /dev/null @@ -1,348 +0,0 @@ ---- A note on GPL versions - -BusyBox is distributed under version 2 of the General Public License (included -in its entirety, below). Version 2 is the only version of this license which -this version of BusyBox (or modified versions derived from this one) may be -distributed under. - ------------------------------------------------------------------------- - GNU GENERAL PUBLIC LICENSE - Version 2, June 1991 - - Copyright (C) 1989, 1991 Free Software Foundation, Inc. - 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The licenses for most software are designed to take away your -freedom to share and change it. By contrast, the GNU General Public -License is intended to guarantee your freedom to share and change free -software--to make sure the software is free for all its users. This -General Public License applies to most of the Free Software -Foundation's software and to any other program whose authors commit to -using it. 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For software which is copyrighted by the Free -Software Foundation, write to the Free Software Foundation; we sometimes -make exceptions for this. Our decision will be guided by the two goals -of preserving the free status of all derivatives of our free software and -of promoting the sharing and reuse of software generally. - - NO WARRANTY - - 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY -FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN -OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES -PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED -OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF -MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS -TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE -PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, -REPAIR OR CORRECTION. - - 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING -WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR -REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, -INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING -OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED -TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY -YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER -PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE -POSSIBILITY OF SUCH DAMAGES. - - END OF TERMS AND CONDITIONS - - How to Apply These Terms to Your New Programs - - If you develop a new program, and you want it to be of the greatest -possible use to the public, the best way to achieve this is to make it -free software which everyone can redistribute and change under these terms. - - To do so, attach the following notices to the program. It is safest -to attach them to the start of each source file to most effectively -convey the exclusion of warranty; and each file should have at least -the "copyright" line and a pointer to where the full notice is found. - - - Copyright (C) - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - -Also add information on how to contact you by electronic and paper mail. - -If the program is interactive, make it output a short notice like this -when it starts in an interactive mode: - - Gnomovision version 69, Copyright (C) year name of author - Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it - under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. Of course, the commands you use may -be called something other than `show w' and `show c'; they could even be -mouse-clicks or menu items--whatever suits your program. - -You should also get your employer (if you work as a programmer) or your -school, if any, to sign a "copyright disclaimer" for the program, if -necessary. Here is a sample; alter the names: - - Yoyodyne, Inc., hereby disclaims all copyright interest in the program - `Gnomovision' (which makes passes at compilers) written by James Hacker. - - , 1 April 1989 - Ty Coon, President of Vice - -This General Public License does not permit incorporating your program into -proprietary programs. If your program is a subroutine library, you may -consider it more useful to permit linking proprietary applications with the -library. If this is what you want to do, use the GNU Library General -Public License instead of this License. diff --git a/Apps/Vi/README.md b/Apps/Vi/README.md deleted file mode 100644 index 929d6c9..0000000 --- a/Apps/Vi/README.md +++ /dev/null @@ -1,34 +0,0 @@ -# Vi - -The [BusyBox](https://busybox.net) `vi` text editor (version 1.37.0) for the Tactility terminal. - -## Usage - -Run it from the Terminal app: - -``` -vi [-c CMD] [-R] [-H] [FILE]... -``` - -- `-c CMD`: run a colon command at startup -- `-R`: read-only mode -- `-H`: list available features - -## Features - -- Colon commands (`:w`, `:q`, `:wq`, `:e`, `:r`, `:s/old/new/`, ...) -- Yank/put and marks -- Search (plain text, no regular expressions) -- `.` repeat, undo, `:set` options (autoindent, ignorecase, showmatch, tabstop) - -Not supported: regular expressions, `:!` shell commands, signals (suspend/resize). -The terminal has no Home/End/PgUp/PgDn keys: use `0`, `$`, `Ctrl+B` and `Ctrl+F`. - -## Source - -- `main/Source/vi.c` and `main/Source/read_key.c`: unmodified from BusyBox 1.37.0 (`editors/vi.c`, `libbb/read_key.c`) -- `main/Include/libbb.h` and `main/Source/libbb.c`: the subset of BusyBox's libbb that these need, plus the feature configuration - -## License - -Unlike the other apps in this repository, this app is licensed under [GPL v2](LICENSE) (only), as required by BusyBox. diff --git a/Apps/Vi/main/CMakeLists.txt b/Apps/Vi/main/CMakeLists.txt deleted file mode 100644 index 4d8f6f2..0000000 --- a/Apps/Vi/main/CMakeLists.txt +++ /dev/null @@ -1,11 +0,0 @@ -include("$ENV{TACTILITY_SDK_PATH}/TactilitySDK.cmake") - -file(GLOB_RECURSE SOURCE_FILES Source/*.c) -tactility_component_register(SRCS ${SOURCE_FILES} INCLUDE_DIRS "Include") - -# BusyBox code style. ESP-IDF builds a component library, POSIX builds the project target directly. -if (DEFINED COMPONENT_LIB) - target_compile_options(${COMPONENT_LIB} PRIVATE -Wno-char-subscripts -Wno-implicit-fallthrough) -else () - target_compile_options(${PROJECT_NAME} PRIVATE -Wno-char-subscripts -Wno-implicit-fallthrough) -endif () diff --git a/Apps/Vi/main/Include/libbb.h b/Apps/Vi/main/Include/libbb.h deleted file mode 100644 index 34533df..0000000 --- a/Apps/Vi/main/Include/libbb.h +++ /dev/null @@ -1,208 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * Minimal subset of BusyBox's libbb.h: just what editors/vi.c and libbb/read_key.c need. - * - * Licensed under GPLv2, see file LICENSE in this app's directory. - */ -#pragma once - -/* memrchr() and other GNU extensions */ -#ifndef _GNU_SOURCE -#define _GNU_SOURCE -#endif - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef TIOCGWINSZ -#define TIOCGWINSZ 0x5413 -struct winsize { - unsigned short ws_row; - unsigned short ws_col; - unsigned short ws_xpixel; - unsigned short ws_ypixel; -}; -#endif - -/* region Configuration */ - -#define BB_VER "1.37.0" - -#define ENABLE_VI 1 -#define IF_VI(...) __VA_ARGS__ -#define CONFIG_FEATURE_VI_MAX_LEN 4096 -#define ENABLE_FEATURE_VI_8BIT 0 -#define ENABLE_FEATURE_VI_COLON 1 -#define IF_FEATURE_VI_COLON(...) __VA_ARGS__ -#define ENABLE_FEATURE_VI_COLON_EXPAND 1 -#define ENABLE_FEATURE_VI_YANKMARK 1 -#define ENABLE_FEATURE_VI_SEARCH 1 -#define IF_FEATURE_VI_SEARCH(...) __VA_ARGS__ -/* vi.c uses the GNU re_search() API, which newlib doesn't provide */ -#define ENABLE_FEATURE_VI_REGEX_SEARCH 0 -#define ENABLE_FEATURE_VI_USE_SIGNALS 0 -#define ENABLE_FEATURE_VI_DOT_CMD 1 -#define ENABLE_FEATURE_VI_READONLY 1 -#define IF_FEATURE_VI_READONLY(...) __VA_ARGS__ -#define ENABLE_FEATURE_VI_SETOPTS 1 -#define IF_FEATURE_VI_SETOPTS(...) __VA_ARGS__ -#define ENABLE_FEATURE_VI_SET 1 -#define ENABLE_FEATURE_VI_WIN_RESIZE 1 -#define ENABLE_FEATURE_VI_ASK_TERMINAL 0 -#define IF_FEATURE_VI_ASK_TERMINAL(...) -#define ENABLE_FEATURE_VI_UNDO 1 -#define ENABLE_FEATURE_VI_UNDO_QUEUE 1 -#define CONFIG_FEATURE_VI_UNDO_QUEUE_MAX 256 -#define ENABLE_FEATURE_VI_VERBOSE_STATUS 1 -#define ENABLE_FEATURE_VI_CRASHME 0 -#define IF_FEATURE_VI_CRASHME(...) -#define ENABLE_FEATURE_ALLOW_EXEC 0 -#define ENABLE_LOCALE_SUPPORT 0 - -/* read_key.c */ -#define ENABLE_FEATURE_EDITING_ASK_TERMINAL 0 -#define ENABLE_FEATURE_LESS_ASK_TERMINAL 0 - -/* endregion */ - -/* region Compiler helpers */ - -#define FAST_FUNC -#define ALIGN1 -#define UNUSED_PARAM __attribute__((unused)) -#define ALWAYS_INLINE __attribute__((always_inline)) inline -#define MAIN_EXTERNALLY_VISIBLE -#define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) - -typedef signed char smallint; -typedef unsigned char smalluint; - -#define TRUE 1 -#define FALSE 0 - -#define STRERROR_FMT "%s" -#define STRERROR_ERRNO , strerror(errno) - -extern struct globals* ptr_to_globals; -#define SET_PTR_TO_GLOBALS(x) (ptr_to_globals = (struct globals*)(x)) - -extern const char* applet_name; - -/* endregion */ - -/* region Linked list (only what getopt32's "::*" argument needs) */ - -typedef struct llist_t { - struct llist_t* link; - char* data; -} llist_t; - -void llist_add_to_end(llist_t** list_head, void* data); -void* llist_pop(llist_t** elm); - -/* endregion */ - -/* region Memory and strings */ - -void* xmalloc(size_t size); -void* xzalloc(size_t size); -void* xrealloc(void* old, size_t size); -char* xstrdup(const char* s); -char* xstrndup(const char* s, int n); -char* xasprintf(const char* format, ...) __attribute__((format(printf, 1, 2))); - -char* skip_whitespace(const char* s); -char* skip_non_whitespace(const char* s); -char* bb_strchrnul(const char* s, int c); -#define strchrnul bb_strchrnul -int index_in_strings(const char* strings, const char* key); -unsigned bb_strtou(const char* arg, char** endp, int base); -char* concat_path_file(const char* path, const char* filename); - -/* endregion */ - -/* region I/O */ - -ssize_t safe_read(int fd, void* buf, size_t count); -ssize_t full_read(int fd, void* buf, size_t count); -ssize_t full_write(int fd, const void* buf, size_t count); -int safe_poll(struct pollfd* ufds, nfds_t nfds, int timeout_ms); -void* xmalloc_open_read_close(const char* filename, size_t* maxsz_p); -void bb_putchar(int ch); -#define fflush_all() fflush(NULL) -#define fputs_stdout(s) fputs((s), stdout) - -/* endregion */ - -/* region Errors */ - -void bb_show_usage(void) __attribute__((noreturn)); -void bb_simple_error_msg_and_die(const char* s) __attribute__((noreturn)); - -/* endregion */ - -/* region Options */ - -uint32_t getopt32(char** argv, const char* applet_opts, ...); - -/* endregion */ - -/* region Terminal */ - -int get_terminal_width_height(int fd, unsigned* width, unsigned* height); -int tcsetattr_stdin_TCSANOW(const struct termios* tp); -#define TERMIOS_CLEAR_ISIG (1 << 0) -#define TERMIOS_RAW_CRNL_INPUT (1 << 1) -#define TERMIOS_RAW_CRNL_OUTPUT (1 << 2) -#define TERMIOS_RAW_CRNL (TERMIOS_RAW_CRNL_INPUT | TERMIOS_RAW_CRNL_OUTPUT) -#define TERMIOS_RAW_INPUT (1 << 3) -int set_termios_to_raw(int fd, struct termios* oldterm, int flags); - -/* "Keycodes" that report an escape sequence. - * We use something which fits into signed char, - * yet doesn't represent any valid Unicode character. - * Also, -1 is reserved for error indication and we don't use it. */ -enum { - KEYCODE_UP = -2, - KEYCODE_DOWN = -3, - KEYCODE_RIGHT = -4, - KEYCODE_LEFT = -5, - KEYCODE_HOME = -6, - KEYCODE_END = -7, - KEYCODE_INSERT = -8, - KEYCODE_DELETE = -9, - KEYCODE_PAGEUP = -10, - KEYCODE_PAGEDOWN = -11, - KEYCODE_BACKSPACE = -12, - KEYCODE_D = -13, - KEYCODE_CTRL_RIGHT = KEYCODE_RIGHT & ~0x40, - KEYCODE_CTRL_LEFT = KEYCODE_LEFT & ~0x40, - KEYCODE_ALT_RIGHT = KEYCODE_RIGHT & ~0x20, - KEYCODE_ALT_LEFT = KEYCODE_LEFT & ~0x20, - KEYCODE_ALT_BACKSPACE = KEYCODE_BACKSPACE & ~0x20, - KEYCODE_ALT_D = KEYCODE_D & ~0x20, - KEYCODE_CURSOR_POS = -0x100, - KEYCODE_BUFFER_SIZE = 16 -}; -int64_t read_key(int fd, char* buffer, int timeout); -int64_t safe_read_key(int fd, char* buffer, int timeout); - -/* endregion */ diff --git a/Apps/Vi/main/Source/libbb.c b/Apps/Vi/main/Source/libbb.c deleted file mode 100644 index 90c2753..0000000 --- a/Apps/Vi/main/Source/libbb.c +++ /dev/null @@ -1,406 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * Minimal subset of BusyBox's libbb: just what editors/vi.c and libbb/read_key.c need. - * Based on libbb/{xfuncs,xfuncs_printf,compare_string_array,read,safe_poll,llist}.c. - * - * Licensed under GPLv2, see file LICENSE in this app's directory. - */ -#include "libbb.h" - -struct globals* ptr_to_globals; -const char* applet_name = "vi"; - -/* region Linked list */ - -void llist_add_to_end(llist_t** list_head, void* data) { - while (*list_head) { - list_head = &(*list_head)->link; - } - *list_head = xzalloc(sizeof(llist_t)); - (*list_head)->data = data; -} - -void* llist_pop(llist_t** head) { - llist_t* temp = *head; - if (temp == NULL) { - return NULL; - } - void* data = temp->data; - *head = temp->link; - free(temp); - return data; -} - -/* endregion */ - -/* region Memory and strings */ - -void* xmalloc(size_t size) { - void* ptr = malloc(size); - if (ptr == NULL && size != 0) { - bb_simple_error_msg_and_die("out of memory"); - } - return ptr; -} - -void* xzalloc(size_t size) { - void* ptr = xmalloc(size); - memset(ptr, 0, size); - return ptr; -} - -void* xrealloc(void* old, size_t size) { - void* ptr = realloc(old, size); - if (ptr == NULL && size != 0) { - bb_simple_error_msg_and_die("out of memory"); - } - return ptr; -} - -char* xstrdup(const char* s) { - char* t = strdup(s); - if (t == NULL) { - bb_simple_error_msg_and_die("out of memory"); - } - return t; -} - -char* xstrndup(const char* s, int n) { - size_t len = 0; - while (len < (size_t)n && s[len] != '\0') { - len++; - } - char* t = xmalloc(len + 1); - memcpy(t, s, len); - t[len] = '\0'; - return t; -} - -char* xasprintf(const char* format, ...) { - va_list p; - va_start(p, format); - int needed = vsnprintf(NULL, 0, format, p); - va_end(p); - if (needed < 0) { - bb_simple_error_msg_and_die("out of memory"); - } - char* string_ptr = xmalloc((size_t)needed + 1); - va_start(p, format); - vsnprintf(string_ptr, (size_t)needed + 1, format, p); - va_end(p); - return string_ptr; -} - -char* skip_whitespace(const char* s) { - /* In POSIX/C locale (the only locale we care about: do we REALLY want - * to allow Unicode whitespace in, say, .conf files? nuts!) - * isspace is only these chars: "\t\n\v\f\r" and space. - * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13. - * Use that. - */ - while (*s == ' ' || (unsigned char)(*s - 9) <= (13 - 9)) { - s++; - } - return (char*)s; -} - -char* skip_non_whitespace(const char* s) { - while (*s != '\0' && *s != ' ' && (unsigned char)(*s - 9) > (13 - 9)) { - s++; - } - return (char*)s; -} - -char* bb_strchrnul(const char* s, int c) { - while (*s != '\0' && *s != c) { - s++; - } - return (char*)s; -} - -int index_in_strings(const char* strings, const char* key) { - int j, idx = 0; - - while (*strings) { - /* Do we see "key\0" at current position in strings? */ - for (j = 0; *strings == key[j]; ++j) { - if (*strings++ == '\0') { - return idx; /* yes */ - } - } - /* No. Move to the start of the next string. */ - while (*strings++ != '\0') { - continue; - } - idx++; - } - return -1; -} - -unsigned bb_strtou(const char* arg, char** endp, int base) { - char* endptr; - if (endp == NULL) { - endp = &endptr; - } - if (!isalnum((unsigned char)arg[0])) { - *endp = (char*)arg; - errno = ERANGE; - return UINT32_MAX; - } - errno = 0; - unsigned long v = strtoul(arg, endp, base); - if (v > UINT32_MAX) { - errno = ERANGE; - return UINT32_MAX; - } - if (**endp != '\0') { - errno = EINVAL; - } - return (unsigned)v; -} - -char* concat_path_file(const char* path, const char* filename) { - size_t len = strlen(path); - const char* separator = (len > 0 && path[len - 1] == '/') ? "" : "/"; - while (*filename == '/') { - filename++; - } - return xasprintf("%s%s%s", path, separator, filename); -} - -/* endregion */ - -/* region I/O */ - -ssize_t safe_read(int fd, void* buf, size_t count) { - ssize_t n; - do { - n = read(fd, buf, count); - } while (n < 0 && errno == EINTR); - return n; -} - -ssize_t full_read(int fd, void* buf, size_t len) { - ssize_t total = 0; - while (len) { - ssize_t cc = safe_read(fd, buf, len); - if (cc < 0) { - if (total) { - /* we already have some! */ - /* user can do another read to know the error code */ - return total; - } - return cc; /* read() returns -1 on failure. */ - } - if (cc == 0) { - break; - } - buf = ((char*)buf) + cc; - total += cc; - len -= (size_t)cc; - } - return total; -} - -ssize_t full_write(int fd, const void* buf, size_t len) { - ssize_t total = 0; - while (len) { - ssize_t cc = write(fd, buf, len); - if (cc < 0) { - if (errno == EINTR) { - continue; - } - if (total) { - /* we already wrote some! */ - /* user can do another write to know the error code */ - return total; - } - return cc; /* write() returns -1 on failure. */ - } - total += cc; - buf = ((const char*)buf) + cc; - len -= (size_t)cc; - } - return total; -} - -int safe_poll(struct pollfd* ufds, nfds_t nfds, int timeout) { - while (1) { - int n = poll(ufds, nfds, timeout); - if (n >= 0) { - return n; - } - /* Make sure we inch towards completion */ - if (timeout > 0) { - timeout--; - } - /* E.g. strace causes poll to return this */ - if (errno == EINTR) { - continue; - } - return n; - } -} - -void* xmalloc_open_read_close(const char* filename, size_t* maxsz_p) { - int fd = open(filename, O_RDONLY); - if (fd < 0) { - return NULL; - } - size_t size = 0; - size_t capacity = 1024; - char* buf = xmalloc(capacity); - while (1) { - if (size + 1 >= capacity) { - capacity *= 2; - buf = xrealloc(buf, capacity); - } - ssize_t n = safe_read(fd, buf + size, capacity - size - 1); - if (n < 0) { - free(buf); - close(fd); - return NULL; - } - if (n == 0) { - break; - } - size += (size_t)n; - } - close(fd); - buf[size] = '\0'; - if (maxsz_p) { - *maxsz_p = size; - } - return buf; -} - -void bb_putchar(int ch) { - putchar(ch); -} - -/* endregion */ - -/* region Errors */ - -void bb_show_usage(void) { - fputs("Usage: vi [-c CMD] [-R] [-H] [FILE]...\n", stderr); - exit(EXIT_FAILURE); -} - -void bb_simple_error_msg_and_die(const char* s) { - fprintf(stderr, "%s: %s\n", applet_name, s); - exit(EXIT_FAILURE); -} - -/* endregion */ - -/* region Options */ - -/* Subset of libbb's getopt32(): plain flags, "x:" options with a required argument and "x:*" - * options that collect every occurrence into an llist_t. Each ':' option consumes one pointer - * argument, in order. Returns a bitmask with bit N set for the N-th option character. */ -uint32_t getopt32(char** argv, const char* applet_opts, ...) { - char optstring[64]; - char letters[32]; - void* targets[32]; - bool collect[32]; - int count = 0; - size_t optstring_len = 0; - - va_list p; - va_start(p, applet_opts); - for (const char* s = applet_opts; *s != '\0' && count < 32; s++) { - letters[count] = *s; - targets[count] = NULL; - collect[count] = false; - optstring[optstring_len++] = *s; - if (s[1] == ':') { - optstring[optstring_len++] = ':'; - targets[count] = va_arg(p, void*); - s++; - if (s[1] == '*') { - collect[count] = true; - s++; - } - } - count++; - } - va_end(p); - optstring[optstring_len] = '\0'; - - int argc = 0; - while (argv[argc] != NULL) { - argc++; - } - - uint32_t result = 0; - int c; - /* getopt() state is shared with every other program: 0 fully resets it (1 keeps the position within an argument) */ - optind = 0; - while ((c = getopt(argc, argv, optstring)) != -1) { - int i = 0; - while (i < count && letters[i] != c) { - i++; - } - if (i == count) { - bb_show_usage(); - } - result |= (uint32_t)1 << i; - if (targets[i] != NULL) { - if (collect[i]) { - llist_add_to_end((llist_t**)targets[i], optarg); - } else { - *(char**)targets[i] = optarg; - } - } - } - return result; -} - -/* endregion */ - -/* region Terminal */ - -int get_terminal_width_height(int fd, unsigned* width, unsigned* height) { - struct winsize win; - win.ws_row = 0; - win.ws_col = 0; - /* I've seen ioctl returning 0, but row/col is (still?) 0. - * We treat that as an error too. */ - int err = ioctl(fd, TIOCGWINSZ, &win) != 0 || win.ws_row == 0; - if (height) { - *height = win.ws_row ? win.ws_row : 24; - } - if (width) { - *width = win.ws_col ? win.ws_col : 80; - } - return err; -} - -int tcsetattr_stdin_TCSANOW(const struct termios* tp) { - return tcsetattr(STDIN_FILENO, TCSANOW, tp); -} - -int set_termios_to_raw(int fd, struct termios* oldterm, int flags) { - struct termios newterm; - - memset(oldterm, 0, sizeof(*oldterm)); /* paranoia */ - tcgetattr(fd, oldterm); - newterm = *oldterm; - - newterm.c_lflag &= ~(ICANON | ECHO | ECHONL); - if (flags & TERMIOS_CLEAR_ISIG) { - newterm.c_lflag &= ~ISIG; - } - newterm.c_cc[VMIN] = 1; - newterm.c_cc[VTIME] = 0; - if (flags & TERMIOS_RAW_CRNL_INPUT) { - newterm.c_iflag &= ~(IXON | ICRNL); - } - if (flags & TERMIOS_RAW_CRNL_OUTPUT) { - newterm.c_oflag &= ~(ONLCR); - } - return tcsetattr(fd, TCSANOW, &newterm); -} - -/* endregion */ diff --git a/Apps/Vi/main/Source/main.c b/Apps/Vi/main/Source/main.c deleted file mode 100644 index 1e602a7..0000000 --- a/Apps/Vi/main/Source/main.c +++ /dev/null @@ -1,8 +0,0 @@ -/* - * Licensed under GPLv2, see file LICENSE in this app's directory. - */ -int vi_main(int argc, char** argv); - -int main(int argc, char* argv[]) { - return vi_main(argc, argv); -} diff --git a/Apps/Vi/main/Source/read_key.c b/Apps/Vi/main/Source/read_key.c deleted file mode 100644 index cf8ed41..0000000 --- a/Apps/Vi/main/Source/read_key.c +++ /dev/null @@ -1,307 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * Utility routines. - * - * Copyright (C) 2008 Rob Landley - * Copyright (C) 2008 Denys Vlasenko - * - * Licensed under GPLv2, see file LICENSE in this source tree. - */ -#include "libbb.h" - -int64_t FAST_FUNC read_key(int fd, char *buffer, int timeout) -{ - struct pollfd pfd; - const char *seq; - int n; - - /* Known escape sequences for cursor and function keys. - * See "Xterm Control Sequences" - * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html - * Array should be sorted from shortest to longest. - */ - static const char esccmds[] ALIGN1 = { - '\x7f' |0x80,KEYCODE_ALT_BACKSPACE, - '\b' |0x80,KEYCODE_ALT_BACKSPACE, - 'd' |0x80,KEYCODE_ALT_D , - /* lineedit mimics bash: Alt-f and Alt-b are forward/backward - * word jumps. We cheat here and make them return ALT_LEFT/RIGHT - * keycodes. This way, lineedit need no special code to handle them. - * If we'll need to distinguish them, introduce new ALT_F/B keycodes, - * and update lineedit to react to them. - */ - 'f' |0x80,KEYCODE_ALT_RIGHT, - 'b' |0x80,KEYCODE_ALT_LEFT, - 'O','A' |0x80,KEYCODE_UP , - 'O','B' |0x80,KEYCODE_DOWN , - 'O','C' |0x80,KEYCODE_RIGHT , - 'O','D' |0x80,KEYCODE_LEFT , - 'O','H' |0x80,KEYCODE_HOME , - 'O','F' |0x80,KEYCODE_END , -#if 0 - 'O','P' |0x80,KEYCODE_FUN1 , - /* [ESC] ESC O [2] P - [Alt-][Shift-]F1 */ - /* ESC [ O 1 ; 2 P - Shift-F1 */ - /* ESC [ O 1 ; 3 P - Alt-F1 */ - /* ESC [ O 1 ; 4 P - Alt-Shift-F1 */ - /* ESC [ O 1 ; 5 P - Ctrl-F1 */ - /* ESC [ O 1 ; 6 P - Ctrl-Shift-F1 */ - 'O','Q' |0x80,KEYCODE_FUN2 , - 'O','R' |0x80,KEYCODE_FUN3 , - 'O','S' |0x80,KEYCODE_FUN4 , -#endif - '[','A' |0x80,KEYCODE_UP , - '[','B' |0x80,KEYCODE_DOWN , - '[','C' |0x80,KEYCODE_RIGHT , - '[','D' |0x80,KEYCODE_LEFT , - /* ESC [ 1 ; 2 x, where x = A/B/C/D: Shift- */ - /* ESC [ 1 ; 3 x, where x = A/B/C/D: Alt- - implemented below */ - /* ESC [ 1 ; 4 x, where x = A/B/C/D: Alt-Shift- */ - /* ESC [ 1 ; 5 x, where x = A/B/C/D: Ctrl- - implemented below */ - /* ESC [ 1 ; 6 x, where x = A/B/C/D: Ctrl-Shift- */ - /* ESC [ 1 ; 7 x, where x = A/B/C/D: Ctrl-Alt- */ - /* ESC [ 1 ; 8 x, where x = A/B/C/D: Ctrl-Alt-Shift- */ - '[','H' |0x80,KEYCODE_HOME , /* xterm */ - '[','F' |0x80,KEYCODE_END , /* xterm */ - /* [ESC] ESC [ [2] H - [Alt-][Shift-]Home (End similarly?) */ - /* '[','Z' |0x80,KEYCODE_SHIFT_TAB, */ - '[','1','~' |0x80,KEYCODE_HOME , /* vt100? linux vt? or what? */ - '[','2','~' |0x80,KEYCODE_INSERT , - /* ESC [ 2 ; 3 ~ - Alt-Insert */ - '[','3','~' |0x80,KEYCODE_DELETE , - /* [ESC] ESC [ 3 [;2] ~ - [Alt-][Shift-]Delete */ - /* ESC [ 3 ; 3 ~ - Alt-Delete */ - /* ESC [ 3 ; 5 ~ - Ctrl-Delete */ - '[','4','~' |0x80,KEYCODE_END , /* vt100? linux vt? or what? */ - '[','5','~' |0x80,KEYCODE_PAGEUP , - /* ESC [ 5 ; 3 ~ - Alt-PgUp */ - /* ESC [ 5 ; 5 ~ - Ctrl-PgUp */ - /* ESC [ 5 ; 7 ~ - Ctrl-Alt-PgUp */ - '[','6','~' |0x80,KEYCODE_PAGEDOWN, - '[','7','~' |0x80,KEYCODE_HOME , /* vt100? linux vt? or what? */ - '[','8','~' |0x80,KEYCODE_END , /* vt100? linux vt? or what? */ -#if 0 - '[','1','1','~'|0x80,KEYCODE_FUN1 , /* old xterm, deprecated by ESC O P */ - '[','1','2','~'|0x80,KEYCODE_FUN2 , /* old xterm... */ - '[','1','3','~'|0x80,KEYCODE_FUN3 , /* old xterm... */ - '[','1','4','~'|0x80,KEYCODE_FUN4 , /* old xterm... */ - '[','1','5','~'|0x80,KEYCODE_FUN5 , - /* [ESC] ESC [ 1 5 [;2] ~ - [Alt-][Shift-]F5 */ - '[','1','7','~'|0x80,KEYCODE_FUN6 , - '[','1','8','~'|0x80,KEYCODE_FUN7 , - '[','1','9','~'|0x80,KEYCODE_FUN8 , - '[','2','0','~'|0x80,KEYCODE_FUN9 , - '[','2','1','~'|0x80,KEYCODE_FUN10 , - '[','2','3','~'|0x80,KEYCODE_FUN11 , - '[','2','4','~'|0x80,KEYCODE_FUN12 , - /* ESC [ 2 4 ; 2 ~ - Shift-F12 */ - /* ESC [ 2 4 ; 3 ~ - Alt-F12 */ - /* ESC [ 2 4 ; 4 ~ - Alt-Shift-F12 */ - /* ESC [ 2 4 ; 5 ~ - Ctrl-F12 */ - /* ESC [ 2 4 ; 6 ~ - Ctrl-Shift-F12 */ -#endif - /* '[','1',';','5','A' |0x80,KEYCODE_CTRL_UP , - unused */ - /* '[','1',';','5','B' |0x80,KEYCODE_CTRL_DOWN , - unused */ - '[','1',';','5','C' |0x80,KEYCODE_CTRL_RIGHT, - '[','1',';','5','D' |0x80,KEYCODE_CTRL_LEFT , - /* '[','1',';','3','A' |0x80,KEYCODE_ALT_UP , - unused */ - /* '[','1',';','3','B' |0x80,KEYCODE_ALT_DOWN , - unused */ - '[','1',';','3','C' |0x80,KEYCODE_ALT_RIGHT, - '[','1',';','3','D' |0x80,KEYCODE_ALT_LEFT , - /* '[','3',';','3','~' |0x80,KEYCODE_ALT_DELETE, - unused */ - 0 - }; - - pfd.fd = fd; - pfd.events = POLLIN; - - buffer++; /* saved chars counter is in buffer[-1] now */ - - start_over: - errno = 0; - n = (unsigned char)buffer[-1]; - if (n == 0) { - /* If no data, wait for input. - * If requested, wait TIMEOUT ms. TIMEOUT = -1 is useful - * if fd can be in non-blocking mode. - */ - if (timeout >= -1) { - n = poll(&pfd, 1, timeout); - if (n < 0 && errno == EINTR) - return n; - if (n == 0) { - /* Timed out */ - errno = EAGAIN; - return -1; - } - } - /* It is tempting to read more than one byte here, - * but it breaks pasting. Example: at shell prompt, - * user presses "c","a","t" and then pastes "\nline\n". - * When we were reading 3 bytes here, we were eating - * "li" too, and cat was getting wrong input. - */ - n = read(fd, buffer, 1); - if (n <= 0) - return -1; - } - - { - unsigned char c = buffer[0]; - n--; - if (n) - memmove(buffer, buffer + 1, n); - /* Only ESC starts ESC sequences */ - if (c != 27) { - buffer[-1] = n; - return c; - } - } - - /* Loop through known ESC sequences */ - seq = esccmds; - while (*seq != '\0') { - /* n - position in sequence we did not read yet */ - int i = 0; /* position in sequence to compare */ - - /* Loop through chars in this sequence */ - while (1) { - /* So far escape sequence matched up to [i-1] */ - if (n <= i) { - /* Need more chars, read another one if it wouldn't block. - * Note that escape sequences come in as a unit, - * so if we block for long it's not really an escape sequence. - * Timeout is needed to reconnect escape sequences - * split up by transmission over a serial console. */ - if (safe_poll(&pfd, 1, 50) == 0) { - /* No more data! - * Array is sorted from shortest to longest, - * we can't match anything later in array - - * anything later is longer than this seq. - * Break out of both loops. */ - goto got_all; - } - errno = 0; - if (safe_read(fd, buffer + n, 1) <= 0) { - /* If EAGAIN, then fd is O_NONBLOCK and poll lied: - * in fact, there is no data. */ - if (errno != EAGAIN) { - /* otherwise: it's EOF/error */ - buffer[-1] = 0; - return -1; - } - goto got_all; - } - n++; - } - if (buffer[i] != (seq[i] & 0x7f)) { - /* This seq doesn't match, go to next */ - seq += i; - /* Forward to last char */ - while (!(*seq & 0x80)) - seq++; - /* Skip it and the keycode which follows */ - seq += 2; - break; - } - if (seq[i] & 0x80) { - /* Entire seq matched */ - n = 0; - /* n -= i; memmove(...); - * would be more correct, - * but we never read ahead that much, - * and n == i here. */ - buffer[-1] = 0; - return (signed char)seq[i+1]; - } - i++; - } - } - /* We did not find matching sequence. - * We possibly read and stored more input in buffer[] by now. - * n = bytes read. Try to read more until we time out. - */ - while (n < KEYCODE_BUFFER_SIZE-1) { /* 1 for count byte at buffer[-1] */ - if (safe_poll(&pfd, 1, 50) == 0) { - /* No more data! */ - break; - } - errno = 0; - if (safe_read(fd, buffer + n, 1) <= 0) { - /* If EAGAIN, then fd is O_NONBLOCK and poll lied: - * in fact, there is no data. */ - if (errno != EAGAIN) { - /* otherwise: it's EOF/error */ - buffer[-1] = 0; - return -1; - } - break; - } - n++; - /* Try to decipher "ESC [ NNN ; NNN R" sequence */ - if ((ENABLE_FEATURE_EDITING_ASK_TERMINAL - || ENABLE_FEATURE_VI_ASK_TERMINAL - || ENABLE_FEATURE_LESS_ASK_TERMINAL - ) - && n >= 5 - && buffer[0] == '[' - && buffer[n-1] == 'R' - && isdigit(buffer[1]) - ) { - char *end; - unsigned long row, col; - - row = strtoul(buffer + 1, &end, 10); - if (*end != ';' || !isdigit(end[1])) - continue; - col = strtoul(end + 1, &end, 10); - if (*end != 'R') - continue; - if (row < 1 || col < 1 || (row | col) > 0x7fff) - continue; - - buffer[-1] = 0; - /* Pack into "1 " 32-bit sequence */ - row |= ((unsigned)(-1) << 15); - col |= (row << 16); - /* Return it in high-order word */ - return ((int64_t) col << 32) | (uint32_t)KEYCODE_CURSOR_POS; - } - } - got_all: - - if (n <= 1) { - /* Alt-x is usually returned as ESC x. - * Report ESC, x is remembered for the next call. - */ - buffer[-1] = n; - return 27; - } - - /* We were doing "buffer[-1] = n; return c;" here, but this results - * in unknown key sequences being interpreted as ESC + garbage. - * This was not useful. Pretend there was no key pressed, - * go and wait for a new keypress: - */ - buffer[-1] = 0; - goto start_over; -} - -int64_t FAST_FUNC safe_read_key(int fd, char *buffer, int timeout) -{ - int64_t r; - do { - /* errno = 0; - read_key does this itself */ - r = read_key(fd, buffer, timeout); - } while (errno == EINTR); - return r; -} - -void FAST_FUNC read_key_ungets(char *buffer, const char *str, unsigned len) -{ - unsigned cur_len = (unsigned char)buffer[0]; - if (len > KEYCODE_BUFFER_SIZE-1 - cur_len) - len = KEYCODE_BUFFER_SIZE-1 - cur_len; - memcpy(buffer + 1 + cur_len, str, len); - buffer[0] += len; -} diff --git a/Apps/Vi/main/Source/vi.c b/Apps/Vi/main/Source/vi.c deleted file mode 100644 index 34932f6..0000000 --- a/Apps/Vi/main/Source/vi.c +++ /dev/null @@ -1,5053 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * tiny vi.c: A small 'vi' clone - * Copyright (C) 2000, 2001 Sterling Huxley - * - * Licensed under GPLv2 or later, see file LICENSE in this source tree. - */ -// -//Things To Do: -// ./.exrc -// add magic to search /foo.*bar -// add :help command -// :map macros -// if mark[] values were line numbers rather than pointers -// it would be easier to change the mark when add/delete lines -// More intelligence in refresh() -// ":r !cmd" and "!cmd" to filter text through an external command -// An "ex" line oriented mode- maybe using "cmdedit" - -//config:config VI -//config: bool "vi (26 kb)" -//config: default y -//config: help -//config: 'vi' is a text editor. More specifically, it is the One True -//config: text editor . It does, however, have a rather steep -//config: learning curve. If you are not already comfortable with 'vi' -//config: you may wish to use something else. -//config: -//config:config FEATURE_VI_MAX_LEN -//config: int "Maximum screen width" -//config: range 256 16384 -//config: default 4096 -//config: depends on VI -//config: help -//config: Contrary to what you may think, this is not eating much. -//config: Make it smaller than 4k only if you are very limited on memory. -//config: -//config:config FEATURE_VI_8BIT -//config: bool "Allow to display 8-bit chars (otherwise shows dots)" -//config: default n -//config: depends on VI -//config: help -//config: If your terminal can display characters with high bit set, -//config: you may want to enable this. Note: vi is not Unicode-capable. -//config: If your terminal combines several 8-bit bytes into one character -//config: (as in Unicode mode), this will not work properly. -//config: -//config:config FEATURE_VI_COLON -//config: bool "Enable \":\" colon commands (no \"ex\" mode)" -//config: default y -//config: depends on VI -//config: help -//config: Enable a limited set of colon commands. This does not -//config: provide an "ex" mode. -//config: -//config:config FEATURE_VI_COLON_EXPAND -//config: bool "Expand \"%\" and \"#\" in colon commands" -//config: default y -//config: depends on FEATURE_VI_COLON -//config: help -//config: Expand the special characters \"%\" (current filename) -//config: and \"#\" (alternate filename) in colon commands. -//config: -//config:config FEATURE_VI_YANKMARK -//config: bool "Enable yank/put commands and mark cmds" -//config: default y -//config: depends on VI -//config: help -//config: This enables you to use yank and put, as well as mark. -//config: -//config:config FEATURE_VI_SEARCH -//config: bool "Enable search and replace cmds" -//config: default y -//config: depends on VI -//config: help -//config: Select this if you wish to be able to do search and replace. -//config: -//config:config FEATURE_VI_REGEX_SEARCH -//config: bool "Enable regex in search and replace" -//config: default n # Uses GNU regex, which may be unavailable. FIXME -//config: depends on FEATURE_VI_SEARCH -//config: help -//config: Use extended regex search. -//config: -//config:config FEATURE_VI_USE_SIGNALS -//config: bool "Catch signals" -//config: default y -//config: depends on VI -//config: help -//config: Selecting this option will make vi signal aware. This will support -//config: SIGWINCH to deal with Window Changes, catch ^Z and ^C and alarms. -//config: -//config:config FEATURE_VI_DOT_CMD -//config: bool "Remember previous cmd and \".\" cmd" -//config: default y -//config: depends on VI -//config: help -//config: Make vi remember the last command and be able to repeat it. -//config: -//config:config FEATURE_VI_READONLY -//config: bool "Enable -R option and \"view\" mode" -//config: default y -//config: depends on VI -//config: help -//config: Enable the read-only command line option, which allows the user to -//config: open a file in read-only mode. -//config: -//config:config FEATURE_VI_SETOPTS -//config: bool "Enable settable options, ai ic showmatch" -//config: default y -//config: depends on VI -//config: help -//config: Enable the editor to set some (ai, ic, showmatch) options. -//config: -//config:config FEATURE_VI_SET -//config: bool "Support :set" -//config: default y -//config: depends on VI -//config: -//config:config FEATURE_VI_WIN_RESIZE -//config: bool "Handle window resize" -//config: default y -//config: depends on VI -//config: help -//config: Behave nicely with terminals that get resized. -//config: -//config:config FEATURE_VI_ASK_TERMINAL -//config: bool "Use 'tell me cursor position' ESC sequence to measure window" -//config: default y -//config: depends on VI -//config: help -//config: If terminal size can't be retrieved and $LINES/$COLUMNS are not set, -//config: this option makes vi perform a last-ditch effort to find it: -//config: position cursor to 999,999 and ask terminal to report real -//config: cursor position using "ESC [ 6 n" escape sequence, then read stdin. -//config: This is not clean but helps a lot on serial lines and such. -//config: -//config:config FEATURE_VI_UNDO -//config: bool "Support undo command \"u\"" -//config: default y -//config: depends on VI -//config: help -//config: Support the 'u' command to undo insertion, deletion, and replacement -//config: of text. -//config: -//config:config FEATURE_VI_UNDO_QUEUE -//config: bool "Enable undo operation queuing" -//config: default y -//config: depends on FEATURE_VI_UNDO -//config: help -//config: The vi undo functions can use an intermediate queue to greatly lower -//config: malloc() calls and overhead. When the maximum size of this queue is -//config: reached, the contents of the queue are committed to the undo stack. -//config: This increases the size of the undo code and allows some undo -//config: operations (especially un-typing/backspacing) to be far more useful. -//config: -//config:config FEATURE_VI_UNDO_QUEUE_MAX -//config: int "Maximum undo character queue size" -//config: default 256 -//config: range 32 65536 -//config: depends on FEATURE_VI_UNDO_QUEUE -//config: help -//config: This option sets the number of bytes used at runtime for the queue. -//config: Smaller values will create more undo objects and reduce the amount -//config: of typed or backspaced characters that are grouped into one undo -//config: operation; larger values increase the potential size of each undo -//config: and will generally malloc() larger objects and less frequently. -//config: Unless you want more (or less) frequent "undo points" while typing, -//config: you should probably leave this unchanged. -//config: -//config:config FEATURE_VI_VERBOSE_STATUS -//config: bool "Enable verbose status reporting" -//config: default y -//config: depends on VI -//config: help -//config: Enable more verbose reporting of the results of yank, change, -//config: delete, undo and substitution commands. - -//applet:IF_VI(APPLET(vi, BB_DIR_BIN, BB_SUID_DROP)) - -//kbuild:lib-$(CONFIG_VI) += vi.o - -//usage:#define vi_trivial_usage -//usage: IF_FEATURE_VI_COLON("[-c CMD] ")IF_FEATURE_VI_READONLY("[-R] ")"[-H] [FILE]..." -//usage:#define vi_full_usage "\n\n" -//usage: "Edit FILE\n" -//usage: IF_FEATURE_VI_COLON( -//usage: "\n -c CMD Initial command to run ($EXINIT and ~/.exrc also available)" -//usage: ) -//usage: IF_FEATURE_VI_READONLY( -//usage: "\n -R Read-only" -//usage: ) -//usage: "\n -H List available features" -// note: non-standard, "vim -H" is Hebrew mode (bidi support) - -#include "libbb.h" -// Should be after libbb.h: on some systems regex.h needs sys/types.h: -#if ENABLE_FEATURE_VI_REGEX_SEARCH -# include -#endif - -// the CRASHME code is unmaintained, and doesn't currently build -#define ENABLE_FEATURE_VI_CRASHME 0 -#define IF_FEATURE_VI_CRASHME(...) - - -#if ENABLE_LOCALE_SUPPORT - -#if ENABLE_FEATURE_VI_8BIT -//FIXME: this does not work properly for Unicode anyway -# define Isprint(c) (isprint)(c) -#else -# define Isprint(c) isprint_asciionly(c) -#endif - -#else - -// 0x9b is Meta-ESC -#if ENABLE_FEATURE_VI_8BIT -# define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b) -#else -# define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f) -#endif - -#endif - -#define isbackspace(c) ((c) == term_orig.c_cc[VERASE] || (c) == 8 || (c) == 127) - -enum { - MAX_TABSTOP = 32, // sanity limit - // User input len. Need not be extra big. - // Lines in file being edited *can* be bigger than this. - MAX_INPUT_LEN = 128, - // Sanity limits. We have only one buffer of this size. - MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN, - MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN, -}; - -// VT102 ESC sequences. -// See "Xterm Control Sequences" -// http://invisible-island.net/xterm/ctlseqs/ctlseqs.html -#define ESC "\033" -// Inverse/Normal text -#define ESC_BOLD_TEXT ESC"[7m" -#define ESC_NORM_TEXT ESC"[m" -// Bell -#define ESC_BELL "\007" -// Clear-to-end-of-line -#define ESC_CLEAR2EOL ESC"[K" -// Clear-to-end-of-screen. -// (We use default param here. -// Full sequence is "ESC [ J", -// is 0/1/2 = "erase below/above/all".) -#define ESC_CLEAR2EOS ESC"[J" -// Cursor to given coordinate (1,1: top left) -#define ESC_SET_CURSOR_POS ESC"[%u;%uH" -#define ESC_SET_CURSOR_TOPLEFT ESC"[H" -//UNUSED -//// Cursor up and down -//#define ESC_CURSOR_UP ESC"[A" -//#define ESC_CURSOR_DOWN "\n" - -#if ENABLE_FEATURE_VI_DOT_CMD -// cmds modifying text[] -static const char modifying_cmds[] ALIGN1 = "aAcCdDiIJoOpPrRs""xX<>~"; -#endif - -enum { - YANKONLY = FALSE, - YANKDEL = TRUE, - FORWARD = 1, // code depends on "1" for array index - BACK = -1, // code depends on "-1" for array index - LIMITED = 0, // char_search() only current line - FULL = 1, // char_search() to the end/beginning of entire text - PARTIAL = 0, // buffer contains partial line - WHOLE = 1, // buffer contains whole lines - MULTI = 2, // buffer may include newlines - - S_BEFORE_WS = 1, // used in skip_thing() for moving "dot" - S_TO_WS = 2, // used in skip_thing() for moving "dot" - S_OVER_WS = 3, // used in skip_thing() for moving "dot" - S_END_PUNCT = 4, // used in skip_thing() for moving "dot" - S_END_ALNUM = 5, // used in skip_thing() for moving "dot" - - C_END = -1, // cursor is at end of line due to '$' command -}; - - -// vi.c expects chars to be unsigned. -// busybox build system provides that, but it's better -// to audit and fix the source - -struct globals { - // many references - keep near the top of globals - char *text, *end; // pointers to the user data in memory - char *dot; // where all the action takes place - int text_size; // size of the allocated buffer - - // the rest -#if ENABLE_FEATURE_VI_SETOPTS - smallint vi_setops; // set by setops() -#define VI_AUTOINDENT (1 << 0) -#define VI_EXPANDTAB (1 << 1) -#define VI_ERR_METHOD (1 << 2) -#define VI_IGNORECASE (1 << 3) -#define VI_SHOWMATCH (1 << 4) -#define VI_TABSTOP (1 << 5) -#define autoindent (vi_setops & VI_AUTOINDENT) -#define expandtab (vi_setops & VI_EXPANDTAB ) -#define err_method (vi_setops & VI_ERR_METHOD) // indicate error with beep or flash -#define ignorecase (vi_setops & VI_IGNORECASE) -#define showmatch (vi_setops & VI_SHOWMATCH ) -// order of constants and strings must match -#define OPTS_STR \ - "ai\0""autoindent\0" \ - "et\0""expandtab\0" \ - "fl\0""flash\0" \ - "ic\0""ignorecase\0" \ - "sm\0""showmatch\0" \ - "ts\0""tabstop\0" -#else -#define autoindent (0) -#define expandtab (0) -#define err_method (0) -#define ignorecase (0) -#endif - -#if ENABLE_FEATURE_VI_READONLY - smallint readonly_mode; -#define SET_READONLY_FILE(flags) ((flags) |= 0x01) -#define SET_READONLY_MODE(flags) ((flags) |= 0x02) -#define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe) -#else -#define SET_READONLY_FILE(flags) ((void)0) -#define SET_READONLY_MODE(flags) ((void)0) -#define UNSET_READONLY_FILE(flags) ((void)0) -#endif - - smallint editing; // >0 while we are editing a file - // [code audit says "can be 0, 1 or 2 only"] - smallint cmd_mode; // 0=command 1=insert 2=replace - int modified_count; // buffer contents changed if !0 - int last_modified_count; // = -1; - int cmdline_filecnt; // how many file names on cmd line - int cmdcnt; // repetition count - char *rstart; // start of text in Replace mode - unsigned rows, columns; // the terminal screen is this size -#if ENABLE_FEATURE_VI_ASK_TERMINAL - int get_rowcol_error; -#endif - int crow, ccol; // cursor is on Crow x Ccol - int offset; // chars scrolled off the screen to the left - int have_status_msg; // is default edit status needed? - // [don't make smallint!] - int last_status_cksum; // hash of current status line - char *current_filename; -#if ENABLE_FEATURE_VI_COLON_EXPAND - char *alt_filename; -#endif - char *screenbegin; // index into text[], of top line on the screen - char *screen; // pointer to the virtual screen buffer - int screensize; // and its size - int tabstop; - int last_search_char; // last char searched for (int because of Unicode) - smallint last_search_cmd; // command used to invoke last char search -#if ENABLE_FEATURE_VI_CRASHME - char last_input_char; // last char read from user -#endif -#if ENABLE_FEATURE_VI_UNDO_QUEUE - char undo_queue_state; // One of UNDO_INS, UNDO_DEL, UNDO_EMPTY -#endif - -#if ENABLE_FEATURE_VI_DOT_CMD - smallint adding2q; // are we currently adding user input to q - int lmc_len; // length of last_modifying_cmd - char *ioq, *ioq_start; // pointer to string for get_one_char to "read" - int dotcnt; // number of times to repeat '.' command -#endif -#if ENABLE_FEATURE_VI_SEARCH - char *last_search_pattern; // last pattern from a '/' or '?' search -#endif -#if ENABLE_FEATURE_VI_SETOPTS - int char_insert__indentcol; // column of recent autoindent or 0 - int newindent; // autoindent value for 'O'/'cc' commands - // or -1 to use indent from previous line -#endif - smallint cmd_error; - - // former statics -#if ENABLE_FEATURE_VI_YANKMARK - char *edit_file__cur_line; -#endif - int refresh__old_offset; - int format_edit_status__tot; - - // a few references only -#if ENABLE_FEATURE_VI_YANKMARK - smalluint YDreg;//,Ureg;// default delete register and orig line for "U" -#define Ureg 27 - char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27 - char regtype[28]; // buffer type: WHOLE, MULTI or PARTIAL - char *mark[28]; // user marks points somewhere in text[]- a-z and previous context '' -#endif -#if ENABLE_FEATURE_VI_USE_SIGNALS - sigjmp_buf restart; // int_handler() jumps to location remembered here -#endif - struct termios term_orig; // remember what the cooked mode was - int cindex; // saved character index for up/down motion - smallint keep_index; // retain saved character index -#if ENABLE_FEATURE_VI_COLON - llist_t *initial_cmds; -#endif - // Should be just enough to hold a key sequence, - // but CRASHME mode uses it as generated command buffer too -#if ENABLE_FEATURE_VI_CRASHME - char readbuffer[128]; -#else - char readbuffer[KEYCODE_BUFFER_SIZE]; -#endif -#define STATUS_BUFFER_LEN 200 - char status_buffer[STATUS_BUFFER_LEN]; // messages to the user -#if ENABLE_FEATURE_VI_DOT_CMD - char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "." -#endif - char get_input_line__buf[MAX_INPUT_LEN]; // former static - - char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2]; - -#if ENABLE_FEATURE_VI_UNDO -// undo_push() operations -#define UNDO_INS 0 -#define UNDO_DEL 1 -#define UNDO_INS_CHAIN 2 -#define UNDO_DEL_CHAIN 3 -# if ENABLE_FEATURE_VI_UNDO_QUEUE -#define UNDO_INS_QUEUED 4 -#define UNDO_DEL_QUEUED 5 -# endif - -// Pass-through flags for functions that can be undone -#define NO_UNDO 0 -#define ALLOW_UNDO 1 -#define ALLOW_UNDO_CHAIN 2 -# if ENABLE_FEATURE_VI_UNDO_QUEUE -#define ALLOW_UNDO_QUEUED 3 -# else -// If undo queuing disabled, don't invoke the missing queue logic -#define ALLOW_UNDO_QUEUED ALLOW_UNDO -# endif - - struct undo_object { - struct undo_object *prev; // Linking back avoids list traversal (LIFO) - int start; // Offset where the data should be restored/deleted - int length; // total data size - uint8_t u_type; // 0=deleted, 1=inserted, 2=swapped - char undo_text[1]; // text that was deleted (if deletion) - } *undo_stack_tail; -# if ENABLE_FEATURE_VI_UNDO_QUEUE -#define UNDO_USE_SPOS 32 -#define UNDO_EMPTY 64 - char *undo_queue_spos; // Start position of queued operation - int undo_q; - char undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX]; -# endif -#endif /* ENABLE_FEATURE_VI_UNDO */ -}; -#define G (*ptr_to_globals) -#define text (G.text ) -#define text_size (G.text_size ) -#define end (G.end ) -#define dot (G.dot ) -#define reg (G.reg ) - -#define vi_setops (G.vi_setops ) -#define editing (G.editing ) -#define cmd_mode (G.cmd_mode ) -#define modified_count (G.modified_count ) -#define last_modified_count (G.last_modified_count) -#define cmdline_filecnt (G.cmdline_filecnt ) -#define cmdcnt (G.cmdcnt ) -#define rstart (G.rstart ) -#define rows (G.rows ) -#define columns (G.columns ) -#define crow (G.crow ) -#define ccol (G.ccol ) -#define offset (G.offset ) -#define status_buffer (G.status_buffer ) -#define have_status_msg (G.have_status_msg ) -#define last_status_cksum (G.last_status_cksum ) -#define current_filename (G.current_filename ) -#define alt_filename (G.alt_filename ) -#define screen (G.screen ) -#define screensize (G.screensize ) -#define screenbegin (G.screenbegin ) -#define tabstop (G.tabstop ) -#define last_search_char (G.last_search_char ) -#define last_search_cmd (G.last_search_cmd ) -#if ENABLE_FEATURE_VI_CRASHME -#define last_input_char (G.last_input_char ) -#endif -#if ENABLE_FEATURE_VI_READONLY -#define readonly_mode (G.readonly_mode ) -#else -#define readonly_mode 0 -#endif -#define adding2q (G.adding2q ) -#define lmc_len (G.lmc_len ) -#define ioq (G.ioq ) -#define ioq_start (G.ioq_start ) -#define dotcnt (G.dotcnt ) -#define last_search_pattern (G.last_search_pattern) -#define char_insert__indentcol (G.char_insert__indentcol) -#define newindent (G.newindent ) -#define cmd_error (G.cmd_error ) - -#define edit_file__cur_line (G.edit_file__cur_line) -#define refresh__old_offset (G.refresh__old_offset) -#define format_edit_status__tot (G.format_edit_status__tot) - -#define YDreg (G.YDreg ) -//#define Ureg (G.Ureg ) -#define regtype (G.regtype ) -#define mark (G.mark ) -#define restart (G.restart ) -#define term_orig (G.term_orig ) -#define cindex (G.cindex ) -#define keep_index (G.keep_index ) -#define initial_cmds (G.initial_cmds ) -#define readbuffer (G.readbuffer ) -#define scr_out_buf (G.scr_out_buf ) -#define last_modifying_cmd (G.last_modifying_cmd ) -#define get_input_line__buf (G.get_input_line__buf) - -#if ENABLE_FEATURE_VI_UNDO -#define undo_stack_tail (G.undo_stack_tail ) -# if ENABLE_FEATURE_VI_UNDO_QUEUE -#define undo_queue_state (G.undo_queue_state) -#define undo_q (G.undo_q ) -#define undo_queue (G.undo_queue ) -#define undo_queue_spos (G.undo_queue_spos ) -# endif -#endif - -#define INIT_G() do { \ - SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ - last_modified_count--; \ - /* "" but has space for 2 chars: */ \ - IF_FEATURE_VI_SEARCH(last_search_pattern = xzalloc(2);) \ - tabstop = 8; \ - IF_FEATURE_VI_SETOPTS(newindent--;) \ -} while (0) - -#if ENABLE_FEATURE_VI_CRASHME -static int crashme = 0; -#endif - -static void show_status_line(void); // put a message on the bottom line -static void status_line_bold(const char *, ...); - -static void show_help(void) -{ - puts("These features are available:" -#if ENABLE_FEATURE_VI_SEARCH - "\n\tPattern searches with / and ?" -#endif -#if ENABLE_FEATURE_VI_DOT_CMD - "\n\tLast command repeat with ." -#endif -#if ENABLE_FEATURE_VI_YANKMARK - "\n\tLine marking with 'x" - "\n\tNamed buffers with \"x" -#endif -#if ENABLE_FEATURE_VI_READONLY - //not implemented: "\n\tReadonly if vi is called as \"view\"" - //redundant: usage text says this too: "\n\tReadonly with -R command line arg" -#endif -#if ENABLE_FEATURE_VI_SET - "\n\tSome colon mode commands with :" -#endif -#if ENABLE_FEATURE_VI_SETOPTS - "\n\tSettable options with \":set\"" -#endif -#if ENABLE_FEATURE_VI_USE_SIGNALS - "\n\tSignal catching- ^C" - "\n\tJob suspend and resume with ^Z" -#endif -#if ENABLE_FEATURE_VI_WIN_RESIZE - "\n\tAdapt to window re-sizes" -#endif - ); -} - -static void write1(const char *out) -{ - fputs_stdout(out); -} - -#if ENABLE_FEATURE_VI_WIN_RESIZE -static int query_screen_dimensions(void) -{ - int err = get_terminal_width_height(STDIN_FILENO, &columns, &rows); - if (rows > MAX_SCR_ROWS) - rows = MAX_SCR_ROWS; - if (columns > MAX_SCR_COLS) - columns = MAX_SCR_COLS; - return err; -} -#else -static ALWAYS_INLINE int query_screen_dimensions(void) -{ - return 0; -} -#endif - -// sleep for 'h' 1/100 seconds, return 1/0 if stdin is (ready for read)/(not ready) -static int mysleep(int hund) -{ - struct pollfd pfd[1]; - - if (hund != 0) - fflush_all(); - - pfd[0].fd = STDIN_FILENO; - pfd[0].events = POLLIN; - return safe_poll(pfd, 1, hund*10) > 0; -} - -//----- Set terminal attributes -------------------------------- -static void rawmode(void) -{ - // no TERMIOS_CLEAR_ISIG: leave ISIG on - allow signals - set_termios_to_raw(STDIN_FILENO, &term_orig, TERMIOS_RAW_CRNL); -} - -static void cookmode(void) -{ - fflush_all(); - tcsetattr_stdin_TCSANOW(&term_orig); -} - -//----- Terminal Drawing --------------------------------------- -// The terminal is made up of 'rows' line of 'columns' columns. -// classically this would be 24 x 80. -// screen coordinates -// 0,0 ... 0,79 -// 1,0 ... 1,79 -// . ... . -// . ... . -// 22,0 ... 22,79 -// 23,0 ... 23,79 <- status line - -//----- Move the cursor to row x col (count from 0, not 1) ------- -static void place_cursor(int row, int col) -{ - char cm1[sizeof(ESC_SET_CURSOR_POS) + sizeof(int)*3 * 2]; - - if (row < 0) row = 0; - if (row >= rows) row = rows - 1; - if (col < 0) col = 0; - if (col >= columns) col = columns - 1; - - sprintf(cm1, ESC_SET_CURSOR_POS, row + 1, col + 1); - write1(cm1); -} - -//----- Erase from cursor to end of line ----------------------- -static void clear_to_eol(void) -{ - write1(ESC_CLEAR2EOL); -} - -static void go_bottom_and_clear_to_eol(void) -{ - place_cursor(rows - 1, 0); - clear_to_eol(); -} - -//----- Start standout mode ------------------------------------ -static void standout_start(void) -{ - write1(ESC_BOLD_TEXT); -} - -//----- End standout mode -------------------------------------- -static void standout_end(void) -{ - write1(ESC_NORM_TEXT); -} - -//----- Text Movement Routines --------------------------------- -static char *begin_line(char *p) // return pointer to first char cur line -{ - if (p > text) { - p = memrchr(text, '\n', p - text); - if (!p) - return text; - return p + 1; - } - return p; -} - -static char *end_line(char *p) // return pointer to NL of cur line -{ - if (p < end - 1) { - p = memchr(p, '\n', end - p - 1); - if (!p) - return end - 1; - } - return p; -} - -static char *dollar_line(char *p) // return pointer to just before NL line -{ - p = end_line(p); - // Try to stay off of the Newline - if (*p == '\n' && (p - begin_line(p)) > 0) - p--; - return p; -} - -static char *prev_line(char *p) // return pointer first char prev line -{ - p = begin_line(p); // goto beginning of cur line - if (p > text && p[-1] == '\n') - p--; // step to prev line - p = begin_line(p); // goto beginning of prev line - return p; -} - -static char *next_line(char *p) // return pointer first char next line -{ - p = end_line(p); - if (p < end - 1 && *p == '\n') - p++; // step to next line - return p; -} - -//----- Text Information Routines ------------------------------ -static char *end_screen(void) -{ - char *q; - int cnt; - - // find new bottom line - q = screenbegin; - for (cnt = 0; cnt < rows - 2; cnt++) - q = next_line(q); - q = end_line(q); - return q; -} - -// count line from start to stop -static int count_lines(char *start, char *stop) -{ - char *q; - int cnt; - - if (stop < start) { // start and stop are backwards- reverse them - q = start; - start = stop; - stop = q; - } - cnt = 0; - stop = end_line(stop); - while (start <= stop && start <= end - 1) { - start = end_line(start); - if (*start == '\n') - cnt++; - start++; - } - return cnt; -} - -static char *find_line(int li) // find beginning of line #li -{ - char *q; - - for (q = text; li > 1; li--) { - q = next_line(q); - } - return q; -} - -static int next_tabstop(int col) -{ - return col + ((tabstop - 1) - (col % tabstop)); -} - -static int prev_tabstop(int col) -{ - return col - ((col % tabstop) ?: tabstop); -} - -static int next_column(char c, int co) -{ - if (c == '\t') - co = next_tabstop(co); - else if ((unsigned char)c < ' ' || c == 0x7f) - co++; // display as ^X, use 2 columns - return co + 1; -} - -static int get_column(char *p) -{ - const char *r; - int co = 0; - - for (r = begin_line(p); r < p; r++) - co = next_column(*r, co); - return co; -} - -//----- Erase the Screen[] memory ------------------------------ -static void screen_erase(void) -{ - memset(screen, ' ', screensize); // clear new screen -} - -static void new_screen(int ro, int co) -{ - char *s; - - free(screen); - screensize = ro * co + 8; - s = screen = xmalloc(screensize); - // initialize the new screen. assume this will be a empty file. - screen_erase(); - // non-existent text[] lines start with a tilde (~). - //screen[(1 * co) + 0] = '~'; - //screen[(2 * co) + 0] = '~'; - //.. - //screen[((ro-2) * co) + 0] = '~'; - ro -= 2; - while (--ro >= 0) { - s += co; - *s = '~'; - } -} - -//----- Synchronize the cursor to Dot -------------------------- -static void sync_cursor(char *d, int *row, int *col) -{ - char *beg_cur; // begin and end of "d" line - char *tp; - int cnt, ro, co; - - beg_cur = begin_line(d); // first char of cur line - - if (beg_cur < screenbegin) { - // "d" is before top line on screen - // how many lines do we have to move - cnt = count_lines(beg_cur, screenbegin); - sc1: - screenbegin = beg_cur; - if (cnt > (rows - 1) / 2) { - // we moved too many lines. put "dot" in middle of screen - for (cnt = 0; cnt < (rows - 1) / 2; cnt++) { - screenbegin = prev_line(screenbegin); - } - } - } else { - char *end_scr; // begin and end of screen - end_scr = end_screen(); // last char of screen - if (beg_cur > end_scr) { - // "d" is after bottom line on screen - // how many lines do we have to move - cnt = count_lines(end_scr, beg_cur); - if (cnt > (rows - 1) / 2) - goto sc1; // too many lines - for (ro = 0; ro < cnt - 1; ro++) { - // move screen begin the same amount - screenbegin = next_line(screenbegin); - // now, move the end of screen - end_scr = next_line(end_scr); - end_scr = end_line(end_scr); - } - } - } - // "d" is on screen- find out which row - tp = screenbegin; - for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row - if (tp == beg_cur) - break; - tp = next_line(tp); - } - - // find out what col "d" is on - co = 0; - do { // drive "co" to correct column - if (*tp == '\n') //vda || *tp == '\0') - break; - co = next_column(*tp, co) - 1; - // inserting text before a tab, don't include its position - if (cmd_mode && tp == d - 1 && *d == '\t') { - co++; - break; - } - } while (tp++ < d && ++co); - - // "co" is the column where "dot" is. - // The screen has "columns" columns. - // The currently displayed columns are 0+offset -- columns+ofset - // |-------------------------------------------------------------| - // ^ ^ ^ - // offset | |------- columns ----------------| - // - // If "co" is already in this range then we do not have to adjust offset - // but, we do have to subtract the "offset" bias from "co". - // If "co" is outside this range then we have to change "offset". - // If the first char of a line is a tab the cursor will try to stay - // in column 7, but we have to set offset to 0. - - if (co < 0 + offset) { - offset = co; - } - if (co >= columns + offset) { - offset = co - columns + 1; - } - // if the first char of the line is a tab, and "dot" is sitting on it - // force offset to 0. - if (d == beg_cur && *d == '\t') { - offset = 0; - } - co -= offset; - - *row = ro; - *col = co; -} - -//----- Format a text[] line into a buffer --------------------- -static char* format_line(char *src /*, int li*/) -{ - unsigned char c; - int co; - int ofs = offset; - char *dest = scr_out_buf; // [MAX_SCR_COLS + MAX_TABSTOP * 2] - - c = '~'; // char in col 0 in non-existent lines is '~' - co = 0; - while (co < columns + tabstop) { - // have we gone past the end? - if (src < end) { - c = *src++; - if (c == '\n') - break; - if ((c & 0x80) && !Isprint(c)) { - c = '.'; - } - if (c < ' ' || c == 0x7f) { - if (c == '\t') { - c = ' '; - // co % 8 != 7 - while ((co % tabstop) != (tabstop - 1)) { - dest[co++] = c; - } - } else { - dest[co++] = '^'; - if (c == 0x7f) - c = '?'; - else - c += '@'; // Ctrl-X -> 'X' - } - } - } - dest[co++] = c; - // discard scrolled-off-to-the-left portion, - // in tabstop-sized pieces - if (ofs >= tabstop && co >= tabstop) { - memmove(dest, dest + tabstop, co); - co -= tabstop; - ofs -= tabstop; - } - if (src >= end) - break; - } - // check "short line, gigantic offset" case - if (co < ofs) - ofs = co; - // discard last scrolled off part - co -= ofs; - dest += ofs; - // fill the rest with spaces - if (co < columns) - memset(&dest[co], ' ', columns - co); - return dest; -} - -//----- Refresh the changed screen lines ----------------------- -// Copy the source line from text[] into the buffer and note -// if the current screenline is different from the new buffer. -// If they differ then that line needs redrawing on the terminal. -// -static void refresh(int full_screen) -{ -#define old_offset refresh__old_offset - - int li, changed; - char *tp, *sp; // pointer into text[] and screen[] - - if (ENABLE_FEATURE_VI_WIN_RESIZE IF_FEATURE_VI_ASK_TERMINAL(&& !G.get_rowcol_error) ) { - unsigned c = columns, r = rows; - query_screen_dimensions(); -#if ENABLE_FEATURE_VI_USE_SIGNALS - full_screen |= (c - columns) | (r - rows); -#else - if (c != columns || r != rows) { - full_screen = TRUE; - // update screen memory since SIGWINCH won't have done it - new_screen(rows, columns); - } -#endif - } - sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot") - tp = screenbegin; // index into text[] of top line - - // compare text[] to screen[] and mark screen[] lines that need updating - for (li = 0; li < rows - 1; li++) { - int cs, ce; // column start & end - char *out_buf; - // format current text line - out_buf = format_line(tp /*, li*/); - - // skip to the end of the current text[] line - if (tp < end) { - char *t = memchr(tp, '\n', end - tp); - if (!t) t = end - 1; - tp = t + 1; - } - - // see if there are any changes between virtual screen and out_buf - changed = FALSE; // assume no change - cs = 0; - ce = columns - 1; - sp = &screen[li * columns]; // start of screen line - if (full_screen) { - // force re-draw of every single column from 0 - columns-1 - goto re0; - } - // compare newly formatted buffer with virtual screen - // look forward for first difference between buf and screen - for (; cs <= ce; cs++) { - if (out_buf[cs] != sp[cs]) { - changed = TRUE; // mark for redraw - break; - } - } - - // look backward for last difference between out_buf and screen - for (; ce >= cs; ce--) { - if (out_buf[ce] != sp[ce]) { - changed = TRUE; // mark for redraw - break; - } - } - // now, cs is index of first diff, and ce is index of last diff - - // if horz offset has changed, force a redraw - if (offset != old_offset) { - re0: - changed = TRUE; - } - - // make a sanity check of columns indexes - if (cs < 0) cs = 0; - if (ce > columns - 1) ce = columns - 1; - if (cs > ce) { cs = 0; ce = columns - 1; } - // is there a change between virtual screen and out_buf - if (changed) { - // copy changed part of buffer to virtual screen - memcpy(sp+cs, out_buf+cs, ce-cs+1); - place_cursor(li, cs); - // write line out to terminal - fwrite(&sp[cs], ce - cs + 1, 1, stdout); - } - } - - place_cursor(crow, ccol); - - if (!keep_index) - cindex = ccol + offset; - - old_offset = offset; -#undef old_offset -} - -//----- Force refresh of all Lines ----------------------------- -static void redraw(int full_screen) -{ - // cursor to top,left; clear to the end of screen - write1(ESC_SET_CURSOR_TOPLEFT ESC_CLEAR2EOS); - screen_erase(); // erase the internal screen buffer - last_status_cksum = 0; // force status update - refresh(full_screen); // this will redraw the entire display - show_status_line(); -} - -//----- Flash the screen -------------------------------------- -static void flash(int h) -{ - standout_start(); - redraw(TRUE); - mysleep(h); - standout_end(); - redraw(TRUE); -} - -static void indicate_error(void) -{ -#if ENABLE_FEATURE_VI_CRASHME - if (crashme > 0) - return; -#endif - cmd_error = TRUE; - if (!err_method) { - write1(ESC_BELL); - } else { - flash(10); - } -} - -//----- IO Routines -------------------------------------------- -static int readit(void) // read (maybe cursor) key from stdin -{ - int c; - - fflush_all(); - - // Wait for input. TIMEOUT = -1 makes read_key wait even - // on nonblocking stdin. - // Note: read_key sets errno to 0 on success. - again: - c = safe_read_key(STDIN_FILENO, readbuffer, /*timeout:*/ -1); - if (c == -1) { // EOF/error - if (errno == EAGAIN) // paranoia - goto again; - go_bottom_and_clear_to_eol(); - cookmode(); // terminal to "cooked" - bb_simple_error_msg_and_die("can't read user input"); - } - return c; -} - -#if ENABLE_FEATURE_VI_DOT_CMD -static int get_one_char(void) -{ - int c; - - if (!adding2q) { - // we are not adding to the q. - // but, we may be reading from a saved q. - // (checking "ioq" for NULL is wrong, it's not reset to NULL - // when done - "ioq_start" is reset instead). - if (ioq_start != NULL) { - // there is a queue to get chars from. - // careful with correct sign expansion! - c = (unsigned char)*ioq++; - if (c != '\0') - return c; - // the end of the q - free(ioq_start); - ioq_start = NULL; - // read from STDIN: - } - return readit(); - } - // we are adding STDIN chars to q. - c = readit(); - if (lmc_len >= ARRAY_SIZE(last_modifying_cmd) - 2) { - // last_modifying_cmd[] is too small, can't remember the cmd - // - drop it - adding2q = 0; - lmc_len = 0; - } else { - last_modifying_cmd[lmc_len++] = c; - } - return c; -} -#else -# define get_one_char() readit() -#endif - -// Get type of thing to operate on and adjust count -static int get_motion_char(void) -{ - int c, cnt; - - c = get_one_char(); - if (isdigit(c)) { - if (c != '0') { - // get any non-zero motion count - for (cnt = 0; isdigit(c); c = get_one_char()) - cnt = cnt * 10 + (c - '0'); - cmdcnt = (cmdcnt ?: 1) * cnt; - } else { - // ensure standalone '0' works - cmdcnt = 0; - } - } - - return c; -} - -// Get input line (uses "status line" area) -static char *get_input_line(const char *prompt) -{ - // char [MAX_INPUT_LEN] -#define buf get_input_line__buf - - int c; - int i; - - strcpy(buf, prompt); - last_status_cksum = 0; // force status update - go_bottom_and_clear_to_eol(); - write1(buf); // write out the :, /, or ? prompt - - i = strlen(buf); - while (i < MAX_INPUT_LEN - 1) { - c = get_one_char(); - if (c == '\n' || c == '\r' || c == 27) - break; // this is end of input - if (isbackspace(c)) { - // user wants to erase prev char - buf[--i] = '\0'; - go_bottom_and_clear_to_eol(); - if (i <= 0) // user backs up before b-o-l, exit - break; - write1(buf); - } else if (c > 0 && c < 256) { // exclude Unicode - // (TODO: need to handle Unicode) - buf[i] = c; - buf[++i] = '\0'; - bb_putchar(c); - } - } - refresh(FALSE); - return buf; -#undef buf -} - -static void Hit_Return(void) -{ - int c; - - standout_start(); - write1("[Hit return to continue]"); - standout_end(); - while ((c = get_one_char()) != '\n' && c != '\r') - continue; - redraw(TRUE); // force redraw all -} - -//----- Draw the status line at bottom of the screen ------------- -// show file status on status line -static int format_edit_status(void) -{ - static const char cmd_mode_indicator[] ALIGN1 = "-IR-"; - -#define tot format_edit_status__tot - - int cur, percent, ret, trunc_at; - - // modified_count is now a counter rather than a flag. this - // helps reduce the amount of line counting we need to do. - // (this will cause a mis-reporting of modified status - // once every MAXINT editing operations.) - - // it would be nice to do a similar optimization here -- if - // we haven't done a motion that could have changed which line - // we're on, then we shouldn't have to do this count_lines() - cur = count_lines(text, dot); - - // count_lines() is expensive. - // Call it only if something was changed since last time - // we were here: - if (modified_count != last_modified_count) { - tot = cur + count_lines(dot, end - 1) - 1; - last_modified_count = modified_count; - } - - // current line percent - // ------------- ~~ ---------- - // total lines 100 - if (tot > 0) { - percent = (100 * cur) / tot; - } else { - cur = tot = 0; - percent = 100; - } - - trunc_at = columns < STATUS_BUFFER_LEN-1 ? - columns : STATUS_BUFFER_LEN-1; - - ret = snprintf(status_buffer, trunc_at+1, -#if ENABLE_FEATURE_VI_READONLY - "%c %s%s%s %d/%d %d%%", -#else - "%c %s%s %d/%d %d%%", -#endif - cmd_mode_indicator[cmd_mode & 3], - (current_filename != NULL ? current_filename : "No file"), -#if ENABLE_FEATURE_VI_READONLY - (readonly_mode ? " [Readonly]" : ""), -#endif - (modified_count ? " [Modified]" : ""), - cur, tot, percent); - - if (ret >= 0 && ret < trunc_at) - return ret; // it all fit - - return trunc_at; // had to truncate -#undef tot -} - -static int bufsum(char *buf, int count) -{ - int sum = 0; - char *e = buf + count; - while (buf < e) - sum += (unsigned char) *buf++; - return sum; -} - -static void show_status_line(void) -{ - int cnt = 0, cksum = 0; - - // either we already have an error or status message, or we - // create one. - if (!have_status_msg) { - cnt = format_edit_status(); - cksum = bufsum(status_buffer, cnt); - } - if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) { - last_status_cksum = cksum; // remember if we have seen this line - go_bottom_and_clear_to_eol(); - write1(status_buffer); - if (have_status_msg) { - if (((int)strlen(status_buffer) - (have_status_msg - 1)) > - (columns - 1) ) { - have_status_msg = 0; - Hit_Return(); - } - have_status_msg = 0; - } - place_cursor(crow, ccol); // put cursor back in correct place - } - fflush_all(); -} - -//----- format the status buffer, the bottom line of screen ------ -static void status_line(const char *format, ...) -{ - va_list args; - - va_start(args, format); - vsnprintf(status_buffer, STATUS_BUFFER_LEN, format, args); - va_end(args); - - have_status_msg = 1; -} -static void status_line_bold(const char *format, ...) -{ - va_list args; - - va_start(args, format); - strcpy(status_buffer, ESC_BOLD_TEXT); - vsnprintf(status_buffer + (sizeof(ESC_BOLD_TEXT)-1), - STATUS_BUFFER_LEN - sizeof(ESC_BOLD_TEXT) - sizeof(ESC_NORM_TEXT), - format, args - ); - strcat(status_buffer, ESC_NORM_TEXT); - va_end(args); - - have_status_msg = 1 + (sizeof(ESC_BOLD_TEXT)-1) + (sizeof(ESC_NORM_TEXT)-1); -} -static void status_line_bold_errno(const char *fn) -{ - status_line_bold("'%s' "STRERROR_FMT, fn STRERROR_ERRNO); -} - -// copy s to buf, convert unprintable -static void print_literal(char *buf, const char *s) -{ - char *d; - unsigned char c; - - if (!s[0]) - s = "(NULL)"; - - d = buf; - for (; *s; s++) { - c = *s; - if ((c & 0x80) && !Isprint(c)) - c = '?'; - if (c < ' ' || c == 0x7f) { - *d++ = '^'; - c |= '@'; // 0x40 - if (c == 0x7f) - c = '?'; - } - *d++ = c; - *d = '\0'; - if (d - buf > MAX_INPUT_LEN - 10) // paranoia - break; - } -} -static void not_implemented(const char *s) -{ - char buf[MAX_INPUT_LEN]; - print_literal(buf, s); - status_line_bold("'%s' is not implemented", buf); -} - -//----- Block insert/delete, undo ops -------------------------- -#if ENABLE_FEATURE_VI_YANKMARK -// copy text into a register -static char *text_yank(char *p, char *q, int dest, int buftype) -{ - char *oldreg = reg[dest]; - int cnt = q - p; - if (cnt < 0) { // they are backwards- reverse them - p = q; - cnt = -cnt; - } - // Don't free register yet. This prevents the memory allocator - // from reusing the free block so we can detect if it's changed. - reg[dest] = xstrndup(p, cnt + 1); - regtype[dest] = buftype; - free(oldreg); - return p; -} - -static char what_reg(void) -{ - char c; - - c = 'D'; // default to D-reg - if (YDreg <= 25) - c = 'a' + (char) YDreg; - if (YDreg == 26) - c = 'D'; - if (YDreg == 27) - c = 'U'; - return c; -} - -static void check_context(char cmd) -{ - // Certain movement commands update the context. - if (strchr(":%{}'GHLMz/?Nn", cmd) != NULL) { - mark[27] = mark[26]; // move cur to prev - mark[26] = dot; // move local to cur - } -} - -static char *swap_context(char *p) // goto new context for '' command make this the current context -{ - char *tmp; - - // the current context is in mark[26] - // the previous context is in mark[27] - // only swap context if other context is valid - if (text <= mark[27] && mark[27] <= end - 1) { - tmp = mark[27]; - mark[27] = p; - mark[26] = p = tmp; - } - return p; -} - -# if ENABLE_FEATURE_VI_VERBOSE_STATUS -static void yank_status(const char *op, const char *p, int cnt) -{ - int lines, chars; - - lines = chars = 0; - while (*p) { - ++chars; - if (*p++ == '\n') - ++lines; - } - status_line("%s %d lines (%d chars) from [%c]", - op, lines * cnt, chars * cnt, what_reg()); -} -# endif -#endif /* FEATURE_VI_YANKMARK */ - -#if ENABLE_FEATURE_VI_UNDO -static void undo_push(char *, unsigned, int); -#endif - -// open a hole in text[] -// might reallocate text[]! use p += text_hole_make(p, ...), -// and be careful to not use pointers into potentially freed text[]! -static uintptr_t text_hole_make(char *p, int size) // at "p", make a 'size' byte hole -{ - uintptr_t bias = 0; - - if (size <= 0) - return bias; - end += size; // adjust the new END - if (end >= (text + text_size)) { - char *new_text; - text_size += end - (text + text_size) + 10240; - new_text = xrealloc(text, text_size); - bias = (new_text - text); - screenbegin += bias; - dot += bias; - end += bias; - p += bias; -#if ENABLE_FEATURE_VI_YANKMARK - { - int i; - for (i = 0; i < ARRAY_SIZE(mark); i++) - if (mark[i]) - mark[i] += bias; - } -#endif - text = new_text; - } - memmove(p + size, p, end - size - p); - memset(p, ' ', size); // clear new hole - return bias; -} - -// close a hole in text[] - delete "p" through "q", inclusive -// "undo" value indicates if this operation should be undo-able -#if !ENABLE_FEATURE_VI_UNDO -#define text_hole_delete(a,b,c) text_hole_delete(a,b) -#endif -static char *text_hole_delete(char *p, char *q, int undo) -{ - char *src, *dest; - int cnt, hole_size; - - // move forwards, from beginning - // assume p <= q - src = q + 1; - dest = p; - if (q < p) { // they are backward- swap them - src = p + 1; - dest = q; - } - hole_size = q - p + 1; - cnt = end - src; -#if ENABLE_FEATURE_VI_UNDO - switch (undo) { - case NO_UNDO: - break; - case ALLOW_UNDO: - undo_push(p, hole_size, UNDO_DEL); - break; - case ALLOW_UNDO_CHAIN: - undo_push(p, hole_size, UNDO_DEL_CHAIN); - break; -# if ENABLE_FEATURE_VI_UNDO_QUEUE - case ALLOW_UNDO_QUEUED: - undo_push(p, hole_size, UNDO_DEL_QUEUED); - break; -# endif - } - modified_count--; -#endif - if (src < text || src > end) - goto thd0; - if (dest < text || dest >= end) - goto thd0; - modified_count++; - if (src >= end) - goto thd_atend; // just delete the end of the buffer - memmove(dest, src, cnt); - thd_atend: - end = end - hole_size; // adjust the new END - if (dest >= end) - dest = end - 1; // make sure dest in below end-1 - if (end <= text) - dest = end = text; // keep pointers valid - thd0: - return dest; -} - -#if ENABLE_FEATURE_VI_UNDO - -# if ENABLE_FEATURE_VI_UNDO_QUEUE -// Flush any queued objects to the undo stack -static void undo_queue_commit(void) -{ - // Pushes the queue object onto the undo stack - if (undo_q > 0) { - // Deleted character undo events grow from the end - undo_push(undo_queue + CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q, - undo_q, - (undo_queue_state | UNDO_USE_SPOS) - ); - undo_queue_state = UNDO_EMPTY; - undo_q = 0; - } -} -# else -# define undo_queue_commit() ((void)0) -# endif - -static void flush_undo_data(void) -{ - struct undo_object *undo_entry; - - while (undo_stack_tail) { - undo_entry = undo_stack_tail; - undo_stack_tail = undo_entry->prev; - free(undo_entry); - } -} - -// Undo functions and hooks added by Jody Bruchon (jody@jodybruchon.com) -// Add to the undo stack -static void undo_push(char *src, unsigned length, int u_type) -{ - struct undo_object *undo_entry; -# if ENABLE_FEATURE_VI_UNDO_QUEUE - int use_spos = u_type & UNDO_USE_SPOS; -# endif - - // "u_type" values - // UNDO_INS: insertion, undo will remove from buffer - // UNDO_DEL: deleted text, undo will restore to buffer - // UNDO_{INS,DEL}_CHAIN: Same as above but also calls undo_pop() when complete - // The CHAIN operations are for handling multiple operations that the user - // performs with a single action, i.e. REPLACE mode or find-and-replace commands - // UNDO_{INS,DEL}_QUEUED: If queuing feature is enabled, allow use of the queue - // for the INS/DEL operation. - // UNDO_{INS,DEL} ORed with UNDO_USE_SPOS: commit the undo queue - -# if ENABLE_FEATURE_VI_UNDO_QUEUE - // This undo queuing functionality groups multiple character typing or backspaces - // into a single large undo object. This greatly reduces calls to malloc() for - // single-character operations while typing and has the side benefit of letting - // an undo operation remove chunks of text rather than a single character. - switch (u_type) { - case UNDO_EMPTY: // Just in case this ever happens... - return; - case UNDO_DEL_QUEUED: - if (length != 1) - return; // Only queue single characters - switch (undo_queue_state) { - case UNDO_EMPTY: - undo_queue_state = UNDO_DEL; - case UNDO_DEL: - undo_queue_spos = src; - undo_q++; - undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q] = *src; - // If queue is full, dump it into an object - if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX) - undo_queue_commit(); - return; - case UNDO_INS: - // Switch from storing inserted text to deleted text - undo_queue_commit(); - undo_push(src, length, UNDO_DEL_QUEUED); - return; - } - break; - case UNDO_INS_QUEUED: - if (length < 1) - return; - switch (undo_queue_state) { - case UNDO_EMPTY: - undo_queue_state = UNDO_INS; - undo_queue_spos = src; - case UNDO_INS: - while (length--) { - undo_q++; // Don't need to save any data for insertions - if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX) - undo_queue_commit(); - } - return; - case UNDO_DEL: - // Switch from storing deleted text to inserted text - undo_queue_commit(); - undo_push(src, length, UNDO_INS_QUEUED); - return; - } - break; - } - u_type &= ~UNDO_USE_SPOS; -# endif - - // Allocate a new undo object - if (u_type == UNDO_DEL || u_type == UNDO_DEL_CHAIN) { - // For UNDO_DEL objects, save deleted text - if ((text + length) == end) - length--; - // If this deletion empties text[], strip the newline. When the buffer becomes - // zero-length, a newline is added back, which requires this to compensate. - undo_entry = xzalloc(offsetof(struct undo_object, undo_text) + length); - memcpy(undo_entry->undo_text, src, length); - } else { - undo_entry = xzalloc(sizeof(*undo_entry)); - } - undo_entry->length = length; -# if ENABLE_FEATURE_VI_UNDO_QUEUE - if (use_spos) { - undo_entry->start = undo_queue_spos - text; // use start position from queue - } else { - undo_entry->start = src - text; // use offset from start of text buffer - } -# else - undo_entry->start = src - text; -# endif - undo_entry->u_type = u_type; - - // Push it on undo stack - undo_entry->prev = undo_stack_tail; - undo_stack_tail = undo_entry; - modified_count++; -} - -static void undo_push_insert(char *p, int len, int undo) -{ - switch (undo) { - case ALLOW_UNDO: - undo_push(p, len, UNDO_INS); - break; - case ALLOW_UNDO_CHAIN: - undo_push(p, len, UNDO_INS_CHAIN); - break; -# if ENABLE_FEATURE_VI_UNDO_QUEUE - case ALLOW_UNDO_QUEUED: - undo_push(p, len, UNDO_INS_QUEUED); - break; -# endif - } -} - -// Undo the last operation -static void undo_pop(void) -{ - int repeat; - char *u_start, *u_end; - struct undo_object *undo_entry; - - // Commit pending undo queue before popping (should be unnecessary) - undo_queue_commit(); - - undo_entry = undo_stack_tail; - // Check for an empty undo stack - if (!undo_entry) { - status_line("Already at oldest change"); - return; - } - - switch (undo_entry->u_type) { - case UNDO_DEL: - case UNDO_DEL_CHAIN: - // make hole and put in text that was deleted; deallocate text - u_start = text + undo_entry->start; - text_hole_make(u_start, undo_entry->length); - memcpy(u_start, undo_entry->undo_text, undo_entry->length); -# if ENABLE_FEATURE_VI_VERBOSE_STATUS - status_line("Undo [%d] %s %d chars at position %d", - modified_count, "restored", - undo_entry->length, undo_entry->start - ); -# endif - break; - case UNDO_INS: - case UNDO_INS_CHAIN: - // delete what was inserted - u_start = undo_entry->start + text; - u_end = u_start - 1 + undo_entry->length; - text_hole_delete(u_start, u_end, NO_UNDO); -# if ENABLE_FEATURE_VI_VERBOSE_STATUS - status_line("Undo [%d] %s %d chars at position %d", - modified_count, "deleted", - undo_entry->length, undo_entry->start - ); -# endif - break; - } - repeat = 0; - switch (undo_entry->u_type) { - // If this is the end of a chain, lower modification count and refresh display - case UNDO_DEL: - case UNDO_INS: - dot = (text + undo_entry->start); - refresh(FALSE); - break; - case UNDO_DEL_CHAIN: - case UNDO_INS_CHAIN: - repeat = 1; - break; - } - // Deallocate the undo object we just processed - undo_stack_tail = undo_entry->prev; - free(undo_entry); - modified_count--; - // For chained operations, continue popping all the way down the chain. - if (repeat) { - undo_pop(); // Follow the undo chain if one exists - } -} - -#else -# define flush_undo_data() ((void)0) -# define undo_queue_commit() ((void)0) -#endif /* ENABLE_FEATURE_VI_UNDO */ - -//----- Dot Movement Routines ---------------------------------- -static void dot_left(void) -{ - undo_queue_commit(); - if (dot > text && dot[-1] != '\n') - dot--; -} - -static void dot_right(void) -{ - undo_queue_commit(); - if (dot < end - 1 && *dot != '\n') - dot++; -} - -static void dot_begin(void) -{ - undo_queue_commit(); - dot = begin_line(dot); // return pointer to first char cur line -} - -static void dot_end(void) -{ - undo_queue_commit(); - dot = end_line(dot); // return pointer to last char cur line -} - -static char *move_to_col(char *p, int l) -{ - int co; - - p = begin_line(p); - co = 0; - do { - if (*p == '\n') //vda || *p == '\0') - break; - co = next_column(*p, co); - } while (co <= l && p++ < end); - return p; -} - -static void dot_next(void) -{ - undo_queue_commit(); - dot = next_line(dot); -} - -static void dot_prev(void) -{ - undo_queue_commit(); - dot = prev_line(dot); -} - -static void dot_skip_over_ws(void) -{ - // skip WS - while (isspace(*dot) && *dot != '\n' && dot < end - 1) - dot++; -} - -static void dot_to_char(int cmd) -{ - char *q = dot; - int dir = islower(cmd) ? FORWARD : BACK; - - if (last_search_char == 0) - return; - - do { - do { - q += dir; - if ((dir == FORWARD ? q > end - 1 : q < text) || *q == '\n') { - indicate_error(); - return; - } - } while (*q != last_search_char); - } while (--cmdcnt > 0); - - dot = q; - - // place cursor before/after char as required - if (cmd == 't') - dot_left(); - else if (cmd == 'T') - dot_right(); -} - -static void dot_scroll(int cnt, int dir) -{ - char *q; - - undo_queue_commit(); - for (; cnt > 0; cnt--) { - if (dir < 0) { - // scroll Backwards - // ctrl-Y scroll up one line - screenbegin = prev_line(screenbegin); - } else { - // scroll Forwards - // ctrl-E scroll down one line - screenbegin = next_line(screenbegin); - } - } - // make sure "dot" stays on the screen so we dont scroll off - if (dot < screenbegin) - dot = screenbegin; - q = end_screen(); // find new bottom line - if (dot > q) - dot = begin_line(q); // is dot is below bottom line? - dot_skip_over_ws(); -} - -static char *bound_dot(char *p) // make sure text[0] <= P < "end" -{ - if (p >= end && end > text) { - p = end - 1; - indicate_error(); - } - if (p < text) { - p = text; - indicate_error(); - } - return p; -} - -#if ENABLE_FEATURE_VI_DOT_CMD -static void start_new_cmd_q(char c) -{ - // get buffer for new cmd - dotcnt = cmdcnt ?: 1; - last_modifying_cmd[0] = c; - lmc_len = 1; - adding2q = 1; -} -static void end_cmd_q(void) -{ -# if ENABLE_FEATURE_VI_YANKMARK - YDreg = 26; // go back to default Yank/Delete reg -# endif - adding2q = 0; -} -#else -# define end_cmd_q() ((void)0) -#endif /* FEATURE_VI_DOT_CMD */ - -// copy text into register, then delete text. -// -#if !ENABLE_FEATURE_VI_UNDO -#define yank_delete(a,b,c,d,e) yank_delete(a,b,c,d) -#endif -static char *yank_delete(char *start, char *stop, int buftype, int yf, int undo) -{ - char *p; - - // make sure start <= stop - if (start > stop) { - // they are backwards, reverse them - p = start; - start = stop; - stop = p; - } - if (buftype == PARTIAL && *start == '\n') - return start; - p = start; -#if ENABLE_FEATURE_VI_YANKMARK - text_yank(start, stop, YDreg, buftype); -#endif - if (yf == YANKDEL) { - p = text_hole_delete(start, stop, undo); - } // delete lines - return p; -} - -// might reallocate text[]! -static int file_insert(const char *fn, char *p, int initial) -{ - int cnt = -1; - int fd, size; - struct stat statbuf; - - if (p < text) - p = text; - if (p > end) - p = end; - - fd = open(fn, O_RDONLY); - if (fd < 0) { - if (!initial) - status_line_bold_errno(fn); - return cnt; - } - - // Validate file - if (fstat(fd, &statbuf) < 0) { - status_line_bold_errno(fn); - goto fi; - } - if (!S_ISREG(statbuf.st_mode)) { - status_line_bold("'%s' is not a regular file", fn); - goto fi; - } - size = (statbuf.st_size < INT_MAX ? (int)statbuf.st_size : INT_MAX); - p += text_hole_make(p, size); - cnt = full_read(fd, p, size); - if (cnt < 0) { - status_line_bold_errno(fn); - p = text_hole_delete(p, p + size - 1, NO_UNDO); // un-do buffer insert - } else if (cnt < size) { - // There was a partial read, shrink unused space - p = text_hole_delete(p + cnt, p + size - 1, NO_UNDO); - status_line_bold("can't read '%s'", fn); - } -# if ENABLE_FEATURE_VI_UNDO - else { - undo_push_insert(p, size, ALLOW_UNDO); - } -# endif - fi: - close(fd); - -#if ENABLE_FEATURE_VI_READONLY - if (initial - && ((access(fn, W_OK) < 0) || - // root will always have access() - // so we check fileperms too - !(statbuf.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)) - ) - ) { - SET_READONLY_FILE(readonly_mode); - } -#endif - return cnt; -} - -// find matching char of pair () [] {} -// will crash if c is not one of these -static char *find_pair(char *p, const char c) -{ - const char *braces = "()[]{}"; - char match; - int dir, level; - - dir = strchr(braces, c) - braces; - dir ^= 1; - match = braces[dir]; - dir = ((dir & 1) << 1) - 1; // 1 for ([{, -1 for )\} - - // look for match, count levels of pairs (( )) - level = 1; - for (;;) { - p += dir; - if (p < text || p >= end) - return NULL; - if (*p == c) - level++; // increase pair levels - if (*p == match) { - level--; // reduce pair level - if (level == 0) - return p; // found matching pair - } - } -} - -#if ENABLE_FEATURE_VI_SETOPTS -// show the matching char of a pair, () [] {} -static void showmatching(char *p) -{ - char *q, *save_dot; - - // we found half of a pair - q = find_pair(p, *p); // get loc of matching char - if (q == NULL) { - indicate_error(); // no matching char - } else { - // "q" now points to matching pair - save_dot = dot; // remember where we are - dot = q; // go to new loc - refresh(FALSE); // let the user see it - mysleep(40); // give user some time - dot = save_dot; // go back to old loc - refresh(FALSE); - } -} -#endif /* FEATURE_VI_SETOPTS */ - -// might reallocate text[]! use p += stupid_insert(p, ...), -// and be careful to not use pointers into potentially freed text[]! -static uintptr_t stupid_insert(char *p, char c) // stupidly insert the char c at 'p' -{ - uintptr_t bias; - bias = text_hole_make(p, 1); - p += bias; - *p = c; - return bias; -} - -// find number of characters in indent, p must be at beginning of line -static size_t indent_len(char *p) -{ - char *r = p; - - while (r < (end - 1) && isblank(*r)) - r++; - return r - p; -} - -#if !ENABLE_FEATURE_VI_UNDO -#define char_insert(a,b,c) char_insert(a,b) -#endif -static char *char_insert(char *p, char c, int undo) // insert the char c at 'p' -{ -#if ENABLE_FEATURE_VI_SETOPTS -# define indentcol char_insert__indentcol - size_t len; - int col, ntab, nspc; -#endif - char *bol = begin_line(p); - - if (c == 22) { // Is this an ctrl-V? - p += stupid_insert(p, '^'); // use ^ to indicate literal next - refresh(FALSE); // show the ^ - c = get_one_char(); - *p = c; -#if ENABLE_FEATURE_VI_UNDO - undo_push_insert(p, 1, undo); -#else - modified_count++; -#endif - p++; - } else if (c == 27) { // Is this an ESC? - cmd_mode = 0; - undo_queue_commit(); - cmdcnt = 0; - end_cmd_q(); // stop adding to q - last_status_cksum = 0; // force status update - if ((dot > text) && (p[-1] != '\n')) { - p--; - } -#if ENABLE_FEATURE_VI_SETOPTS - if (autoindent) { - len = indent_len(bol); - col = get_column(bol + len); - if (len && col == indentcol && bol[len] == '\n') { - // remove autoindent from otherwise empty line - text_hole_delete(bol, bol + len - 1, undo); - p = bol; - } - } -#endif - } else if (c == 4) { // ctrl-D reduces indentation - char *r = bol + indent_len(bol); - int prev = prev_tabstop(get_column(r)); - while (r > bol && get_column(r) > prev) { - if (p > bol) - p--; - r--; - r = text_hole_delete(r, r, ALLOW_UNDO_QUEUED); - } - -#if ENABLE_FEATURE_VI_SETOPTS - if (autoindent && indentcol && r == end_line(p)) { - // record changed size of autoindent - indentcol = get_column(p); - return p; - } -#endif -#if ENABLE_FEATURE_VI_SETOPTS - } else if (c == '\t' && expandtab) { // expand tab - col = get_column(p); - col = next_tabstop(col) - col + 1; - while (col--) { -# if ENABLE_FEATURE_VI_UNDO - undo_push_insert(p, 1, undo); -# else - modified_count++; -# endif - p += 1 + stupid_insert(p, ' '); - } -#endif - } else if (isbackspace(c)) { - if (cmd_mode == 2) { - // special treatment for backspace in Replace mode - if (p > rstart) { - p--; -#if ENABLE_FEATURE_VI_UNDO - undo_pop(); -#endif - } - } else if (p > text) { - p--; - p = text_hole_delete(p, p, ALLOW_UNDO_QUEUED); // shrink buffer 1 char - } - } else { - // insert a char into text[] - if (c == 13) - c = '\n'; // translate \r to \n -#if ENABLE_FEATURE_VI_UNDO -# if ENABLE_FEATURE_VI_UNDO_QUEUE - if (c == '\n') - undo_queue_commit(); -# endif - undo_push_insert(p, 1, undo); -#else - modified_count++; -#endif - p += 1 + stupid_insert(p, c); // insert the char -#if ENABLE_FEATURE_VI_SETOPTS - if (showmatch && strchr(")]}", c) != NULL) { - showmatching(p - 1); - } - if (autoindent && c == '\n') { // auto indent the new line - if (newindent < 0) { - // use indent of previous line - bol = prev_line(p); - len = indent_len(bol); - col = get_column(bol + len); - - if (len && col == indentcol) { - // previous line was empty except for autoindent - // move the indent to the current line - memmove(bol + 1, bol, len); - *bol = '\n'; - return p; - } - } else { - // for 'O'/'cc' commands add indent before newly inserted NL - if (p != end - 1) // but not for 'cc' at EOF - p--; - col = newindent; - } - - if (col) { - // only record indent if in insert/replace mode or for - // the 'o'/'O'/'cc' commands, which are switched to - // insert mode early. - indentcol = cmd_mode != 0 ? col : 0; - if (expandtab) { - ntab = 0; - nspc = col; - } else { - ntab = col / tabstop; - nspc = col % tabstop; - } - p += text_hole_make(p, ntab + nspc); -# if ENABLE_FEATURE_VI_UNDO - undo_push_insert(p, ntab + nspc, undo); -# endif - memset(p, '\t', ntab); - p += ntab; - memset(p, ' ', nspc); - return p + nspc; - } - } -#endif - } -#if ENABLE_FEATURE_VI_SETOPTS - indentcol = 0; -# undef indentcol -#endif - return p; -} - -#if ENABLE_FEATURE_VI_COLON_EXPAND -static void init_filename(char *fn) -{ - char *copy = xstrdup(fn); - - if (current_filename == NULL) { - current_filename = copy; - } else { - free(alt_filename); - alt_filename = copy; - } -} -#else -# define init_filename(f) ((void)(0)) -#endif - -static void update_filename(char *fn) -{ -#if ENABLE_FEATURE_VI_COLON_EXPAND - if (fn == NULL) - return; - - if (current_filename == NULL || strcmp(fn, current_filename) != 0) { - free(alt_filename); - alt_filename = current_filename; - current_filename = xstrdup(fn); - } -#else - if (fn != current_filename) { - free(current_filename); - current_filename = xstrdup(fn); - } -#endif -} - -// read text from file or create an empty buf -// will also update current_filename -static int init_text_buffer(char *fn) -{ - int rc; - - // allocate/reallocate text buffer - free(text); - text_size = 10240; - screenbegin = dot = end = text = xzalloc(text_size); - - update_filename(fn); - rc = file_insert(fn, text, 1); - if (rc <= 0 || *(end - 1) != '\n') { - // file doesn't exist or doesn't end in a newline. - // insert a newline to the end - char_insert(end, '\n', NO_UNDO); - } - - flush_undo_data(); - modified_count = 0; - last_modified_count = -1; -#if ENABLE_FEATURE_VI_YANKMARK - // init the marks - memset(mark, 0, sizeof(mark)); -#endif - return rc; -} - -#if ENABLE_FEATURE_VI_YANKMARK \ - || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \ - || ENABLE_FEATURE_VI_CRASHME -// might reallocate text[]! use p += string_insert(p, ...), -// and be careful to not use pointers into potentially freed text[]! -# if !ENABLE_FEATURE_VI_UNDO -# define string_insert(a,b,c) string_insert(a,b) -# endif -static uintptr_t string_insert(char *p, const char *s, int undo) // insert the string at 'p' -{ - uintptr_t bias; - int i; - - i = strlen(s); -#if ENABLE_FEATURE_VI_UNDO - undo_push_insert(p, i, undo); -#endif - bias = text_hole_make(p, i); - p += bias; - memcpy(p, s, i); - return bias; -} -#endif - -static int file_write(char *fn, char *first, char *last) -{ - int fd, cnt, charcnt; - - if (fn == 0) { - status_line_bold("No current filename"); - return -2; - } - // By popular request we do not open file with O_TRUNC, - // but instead ftruncate() it _after_ successful write. - // Might reduce amount of data lost on power fail etc. - fd = open(fn, (O_WRONLY | O_CREAT), 0666); - if (fd < 0) - return -1; - cnt = last - first + 1; - charcnt = full_write(fd, first, cnt); - ftruncate(fd, charcnt); - if (charcnt == cnt) { - // good write - //modified_count = FALSE; - } else { - charcnt = 0; - } - close(fd); - return charcnt; -} - -#if ENABLE_FEATURE_VI_SEARCH -# if ENABLE_FEATURE_VI_REGEX_SEARCH -// search for pattern starting at p -static char *char_search(char *p, const char *pat, int dir_and_range) -{ - struct re_pattern_buffer preg; - const char *err; - char *q; - int i, size, range, start; - - re_syntax_options = RE_SYNTAX_POSIX_BASIC & (~RE_DOT_NEWLINE); - if (ignorecase) - re_syntax_options |= RE_ICASE; - - memset(&preg, 0, sizeof(preg)); - err = re_compile_pattern(pat, strlen(pat), &preg); - preg.not_bol = p != text; - preg.not_eol = p != end - 1; - if (err != NULL) { - status_line_bold("bad search pattern '%s': %s", pat, err); - return p; - } - - range = (dir_and_range & 1); - q = end - 1; // if FULL - if (range == LIMITED) - q = next_line(p); - if (dir_and_range < 0) { // BACK? - q = text; - if (range == LIMITED) - q = prev_line(p); - } - - // RANGE could be negative if we are searching backwards - range = q - p; - if (range < 0) { - size = -range; - start = size; - } else { - size = range; - start = 0; - } - q = p - start; - if (q < text) - q = text; - // search for the compiled pattern, preg, in p[] - // range < 0, start == size: search backward - // range > 0, start == 0: search forward - // re_search() < 0: not found or error - // re_search() >= 0: index of found pattern - // struct pattern char int int int struct reg - // re_search(*pattern_buffer, *string, size, start, range, *regs) - i = re_search(&preg, q, size, start, range, /*struct re_registers*:*/ NULL); - regfree(&preg); - return i < 0 ? NULL : q + i; -} -# else -# if ENABLE_FEATURE_VI_SETOPTS -static int mycmp(const char *s1, const char *s2, int len) -{ - if (ignorecase) { - return strncasecmp(s1, s2, len); - } - return strncmp(s1, s2, len); -} -# else -# define mycmp strncmp -# endif -static char *char_search(char *p, const char *pat, int dir_and_range) -{ - char *start, *stop; - int len; - int range; - - len = strlen(pat); - range = (dir_and_range & 1); - if (dir_and_range > 0) { //FORWARD? - stop = end - 1; // assume range is p..end-1 - if (range == LIMITED) - stop = next_line(p); // range is to next line - for (start = p; start < stop; start++) { - if (mycmp(start, pat, len) == 0) { - return start; - } - } - } else { //BACK - stop = text; // assume range is text..p - if (range == LIMITED) - stop = prev_line(p); // range is to prev line - for (start = p - len; start >= stop; start--) { - if (mycmp(start, pat, len) == 0) { - return start; - } - } - } - // pattern not found - return NULL; -} -# endif -#endif /* FEATURE_VI_SEARCH */ - -//----- The Colon commands ------------------------------------- -#if ENABLE_FEATURE_VI_COLON -// Evaluate colon address expression. Returns a pointer to the -// next character or NULL on error. If 'result' contains a valid -// address 'valid' is TRUE. -static char *get_one_address(char *p, int *result, int *valid) -{ - int num, sign, addr, got_addr; -# if ENABLE_FEATURE_VI_YANKMARK || ENABLE_FEATURE_VI_SEARCH - char *q, c; -# endif - IF_FEATURE_VI_SEARCH(int dir;) - - got_addr = FALSE; - addr = count_lines(text, dot); // default to current line - sign = 0; - for (;;) { - if (isblank(*p)) { - if (got_addr) { - addr += sign; - sign = 0; - } - p++; - } else if (!got_addr && *p == '.') { // the current line - p++; - //addr = count_lines(text, dot); - got_addr = TRUE; - } else if (!got_addr && *p == '$') { // the last line in file - p++; - addr = count_lines(text, end - 1); - got_addr = TRUE; - } -# if ENABLE_FEATURE_VI_YANKMARK - else if (!got_addr && *p == '\'') { // is this a mark addr - p++; - c = tolower(*p); - p++; - q = NULL; - if (c >= 'a' && c <= 'z') { - // we have a mark - c = c - 'a'; - q = mark[(unsigned char) c]; - } - if (q == NULL) { // is mark valid - status_line_bold("Mark not set"); - return NULL; - } - addr = count_lines(text, q); - got_addr = TRUE; - } -# endif -# if ENABLE_FEATURE_VI_SEARCH - else if (!got_addr && (*p == '/' || *p == '?')) { // a search pattern - c = *p; - q = strchrnul(p + 1, c); - if (p + 1 != q) { - // save copy of new pattern - free(last_search_pattern); - last_search_pattern = xstrndup(p, q - p); - } - p = q; - if (*p == c) - p++; - if (c == '/') { - q = next_line(dot); - dir = (FORWARD << 1) | FULL; - } else { - q = begin_line(dot); - dir = ((unsigned)BACK << 1) | FULL; - } - q = char_search(q, last_search_pattern + 1, dir); - if (q == NULL) { - // no match, continue from other end of file - q = char_search(dir > 0 ? text : end - 1, - last_search_pattern + 1, dir); - if (q == NULL) { - status_line_bold("Pattern not found"); - return NULL; - } - } - addr = count_lines(text, q); - got_addr = TRUE; - } -# endif - else if (isdigit(*p)) { - num = 0; - while (isdigit(*p)) - num = num * 10 + *p++ -'0'; - if (!got_addr) { // specific line number - addr = num; - got_addr = TRUE; - } else { // offset from current addr - addr += sign >= 0 ? num : -num; - } - sign = 0; - } else if (*p == '-' || *p == '+') { - if (!got_addr) { // default address is dot - //addr = count_lines(text, dot); - got_addr = TRUE; - } else { - addr += sign; - } - sign = *p++ == '-' ? -1 : 1; - } else { - addr += sign; // consume unused trailing sign - break; - } - } - *result = addr; - *valid = got_addr; - return p; -} - -# define GET_ADDRESS 0 -# define GET_SEPARATOR 1 - -// Read line addresses for a colon command. The user can enter as -// many as they like but only the last two will be used. -static char *get_address(char *p, int *b, int *e, unsigned int *got) -{ - int state = GET_ADDRESS; - int valid; - int addr; - char *save_dot = dot; - - //----- get the address' i.e., 1,3 'a,'b ----- - for (;;) { - if (isblank(*p)) { - p++; - } else if (state == GET_ADDRESS && *p == '%') { // alias for 1,$ - p++; - *b = 1; - *e = count_lines(text, end-1); - *got = 3; - state = GET_SEPARATOR; - } else if (state == GET_ADDRESS) { - valid = FALSE; - p = get_one_address(p, &addr, &valid); - // Quit on error or if the address is invalid and isn't of - // the form ',$' or '1,' (in which case it defaults to dot). - if (p == NULL || !(valid || *p == ',' || *p == ';' || *got & 1)) - break; - *b = *e; - *e = addr; - *got = (*got << 1) | 1; - state = GET_SEPARATOR; - } else if (state == GET_SEPARATOR && (*p == ',' || *p == ';')) { - if (*p == ';') - dot = find_line(*e); - p++; - state = GET_ADDRESS; - } else { - break; - } - } - dot = save_dot; - return p; -} - -# if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS -static void setops(char *args, int flg_no) -{ - char *eq; - int index; - - eq = strchr(args, '='); - if (eq) *eq = '\0'; - index = index_in_strings(OPTS_STR, args + flg_no); - if (eq) *eq = '='; - if (index < 0) { - bad: - status_line_bold("bad option: %s", args); - return; - } - - index = 1 << (index >> 1); // convert to VI_bit - - if (index & VI_TABSTOP) { - int t; - if (!eq || flg_no) // no "=NNN" or it is "notabstop"? - goto bad; - t = bb_strtou(eq + 1, NULL, 10); - if (t <= 0 || t > MAX_TABSTOP) - goto bad; - tabstop = t; - return; - } - if (eq) goto bad; // boolean option has "="? - if (flg_no) { - vi_setops &= ~index; - } else { - vi_setops |= index; - } -} -# endif - -# if ENABLE_FEATURE_VI_COLON_EXPAND -static char *expand_args(char *args) -{ - char *s, *t; - const char *replace; - - args = xstrdup(args); - for (s = args; *s; s++) { - if (*s == '%') { - replace = current_filename; - } else if (*s == '#') { - replace = alt_filename; - } else { - if (*s == '\\' && s[1] != '\0') { - for (t = s++; *t; t++) - *t = t[1]; - } - continue; - } - - if (replace == NULL) { - free(args); - status_line_bold("No previous filename"); - return NULL; - } - - *s = '\0'; - t = xasprintf("%s%s%s", args, replace, s+1); - s = t + (s - args) + strlen(replace); - free(args); - args = t; - } - return args; -} -# else -# define expand_args(a) (a) -# endif -#endif /* FEATURE_VI_COLON */ - -#if ENABLE_FEATURE_VI_REGEX_SEARCH -# define MAX_SUBPATTERN 10 // subpatterns \0 .. \9 - -// Like strchr() but skipping backslash-escaped characters -static char *strchr_backslash(const char *s, int c) -{ - while (*s) { - if (*s == c) - return (char *)s; - if (*s == '\\') - if (*++s == '\0') - break; - s++; - } - return NULL; -} - -// If the return value is not NULL the caller should free R -static char *regex_search(char *q, regex_t *preg, const char *Rorig, - size_t *len_F, size_t *len_R, char **R) -{ - regmatch_t regmatch[MAX_SUBPATTERN], *cur_match; - char *found = NULL; - const char *t; - char *r; - - regmatch[0].rm_so = 0; - regmatch[0].rm_eo = end_line(q) - q; - if (regexec(preg, q, MAX_SUBPATTERN, regmatch, REG_STARTEND) != 0) - return found; - - found = q + regmatch[0].rm_so; - *len_F = regmatch[0].rm_eo - regmatch[0].rm_so; - *R = NULL; - - fill_result: - // first pass calculates len_R, second fills R - *len_R = 0; - for (t = Rorig, r = *R; *t; t++) { - size_t len = 1; // default is to copy one char from replace pattern - const char *from = t; - if (*t == '\\') { - from = ++t; // skip backslash - if (*t >= '0' && *t < '0' + MAX_SUBPATTERN) { - cur_match = regmatch + (*t - '0'); - if (cur_match->rm_so >= 0) { - len = cur_match->rm_eo - cur_match->rm_so; - from = q + cur_match->rm_so; - } - } - } - *len_R += len; - if (*R) { - memcpy(r, from, len); - r += len; - /* *r = '\0'; - xzalloc did it */ - } - } - if (*R == NULL) { - *R = xzalloc(*len_R + 1); - goto fill_result; - } - - return found; -} -#else /* !ENABLE_FEATURE_VI_REGEX_SEARCH */ -# define strchr_backslash(s, c) strchr(s, c) -#endif /* ENABLE_FEATURE_VI_REGEX_SEARCH */ - -// buf must be no longer than MAX_INPUT_LEN! -static void colon(char *buf) -{ -#if !ENABLE_FEATURE_VI_COLON - // Simple ":cmd" handler with minimal set of commands - char *p = buf; - int cnt; - - if (*p == ':') - p++; - cnt = strlen(p); - if (cnt == 0) - return; - if (strncmp(p, "quit", cnt) == 0 - || strcmp(p, "q!") == 0 - ) { - if (modified_count && p[1] != '!') { - status_line_bold("No write since last change (:%s! overrides)", p); - } else { - editing = 0; - } - return; - } - if (strncmp(p, "write", cnt) == 0 - || strcmp(p, "wq") == 0 - || strcmp(p, "wn") == 0 - || (p[0] == 'x' && !p[1]) - ) { - if (modified_count != 0 || p[0] != 'x') { - cnt = file_write(current_filename, text, end - 1); - } - if (cnt < 0) { - if (cnt == -1) - status_line_bold("Write error: "STRERROR_FMT STRERROR_ERRNO); - } else { - modified_count = 0; - last_modified_count = -1; - status_line("'%s' %uL, %uC", - current_filename, - count_lines(text, end - 1), cnt - ); - if (p[0] == 'x' - || p[1] == 'q' || p[1] == 'n' - ) { - editing = 0; - } - } - return; - } - if (strncmp(p, "file", cnt) == 0) { - last_status_cksum = 0; // force status update - return; - } - if (sscanf(p, "%d", &cnt) > 0) { - dot = find_line(cnt); - dot_skip_over_ws(); - return; - } - not_implemented(p); -#else - -// check how many addresses we got -# define GOT_ADDRESS (got & 1) -# define GOT_RANGE ((got & 3) == 3) - - char c, *buf1, *q, *r; - char *fn, cmd[MAX_INPUT_LEN], *cmdend, *args, *exp = NULL; - int i, l, li, b, e; - unsigned int got; - int useforce; - - // :3154 // if (-e line 3154) goto it else stay put - // :4,33w! foo // write a portion of buffer to file "foo" - // :w // write all of buffer to current file - // :q // quit - // :q! // quit- dont care about modified file - // :'a,'z!sort -u // filter block through sort - // :'f // goto mark "f" - // :'fl // list literal the mark "f" line - // :.r bar // read file "bar" into buffer before dot - // :/123/,/abc/d // delete lines from "123" line to "abc" line - // :/xyz/ // goto the "xyz" line - // :s/find/replace/ // substitute pattern "find" with "replace" - // :! // run then return - // - - while (*buf == ':') - buf++; // move past leading colons - while (isblank(*buf)) - buf++; // move past leading blanks - if (!buf[0] || buf[0] == '"') - goto ret; // ignore empty lines or those starting with '"' - - li = i = 0; - b = e = -1; - got = 0; - li = count_lines(text, end - 1); - fn = current_filename; - - // look for optional address(es) :. :1 :1,9 :'q,'a :% - buf = get_address(buf, &b, &e, &got); - if (buf == NULL) { - goto ret; - } - - // get the COMMAND into cmd[] - strcpy(cmd, buf); - buf1 = cmd; - while (!isspace(*buf1) && *buf1 != '\0') { - buf1++; - } - cmdend = buf1; - // get any ARGuments - while (isblank(*buf1)) - buf1++; - args = buf1; - *cmdend = '\0'; - useforce = FALSE; - if (cmdend > cmd && cmdend[-1] == '!') { - useforce = TRUE; - cmdend[-1] = '\0'; // get rid of ! - } - // assume the command will want a range, certain commands - // (read, substitute) need to adjust these assumptions - if (!GOT_ADDRESS) { - q = text; // no addr, use 1,$ for the range - r = end - 1; - } else { - // at least one addr was given, get its details - if (e < 0 || e > li) { - status_line_bold("Invalid range"); - goto ret; - } - q = r = find_line(e); - if (!GOT_RANGE) { - // if there is only one addr, then it's the line - // number of the single line the user wants. - // Reset the end pointer to the end of that line. - r = end_line(q); - li = 1; - } else { - // we were given two addrs. change the - // start pointer to the addr given by user. - if (b < 0 || b > li || b > e) { - status_line_bold("Invalid range"); - goto ret; - } - q = find_line(b); // what line is #b - r = end_line(r); - li = e - b + 1; - } - } - // ------------ now look for the command ------------ - i = strlen(cmd); - if (i == 0) { // :123CR goto line #123 - if (e >= 0) { - dot = find_line(e); // what line is #e - dot_skip_over_ws(); - } - } -# if ENABLE_FEATURE_ALLOW_EXEC - else if (cmd[0] == '!') { // run a cmd - int retcode; - // :!ls run the - exp = expand_args(buf + 1); - if (exp == NULL) - goto ret; - go_bottom_and_clear_to_eol(); - cookmode(); - retcode = system(exp); // run the cmd - if (retcode) - printf("\nshell returned %i\n\n", retcode); - rawmode(); - Hit_Return(); // let user see results - } -# endif - else if (cmd[0] == '=' && !cmd[1]) { // where is the address - if (!GOT_ADDRESS) { // no addr given- use defaults - e = count_lines(text, dot); - } - status_line("%d", e); - } else if (strncmp(cmd, "delete", i) == 0) { // delete lines - if (!GOT_ADDRESS) { // no addr given- use defaults - q = begin_line(dot); // assume .,. for the range - r = end_line(dot); - } - dot = yank_delete(q, r, WHOLE, YANKDEL, ALLOW_UNDO); // save, then delete lines - dot_skip_over_ws(); - } else if (strncmp(cmd, "edit", i) == 0) { // Edit a file - int size; - - // don't edit, if the current file has been modified - if (modified_count && !useforce) { - status_line_bold("No write since last change (:%s! overrides)", cmd); - goto ret; - } - if (args[0]) { - // the user supplied a file name - fn = exp = expand_args(args); - if (exp == NULL) - goto ret; - } else if (current_filename == NULL) { - // no user file name, no current name- punt - status_line_bold("No current filename"); - goto ret; - } - - size = init_text_buffer(fn); - -# if ENABLE_FEATURE_VI_YANKMARK - if (Ureg >= 0 && Ureg < 28) { - free(reg[Ureg]); // free orig line reg- for 'U' - reg[Ureg] = NULL; - } - /*if (YDreg < 28) - always true*/ { - free(reg[YDreg]); // free default yank/delete register - reg[YDreg] = NULL; - } -# endif - // how many lines in text[]? - li = count_lines(text, end - 1); - status_line("'%s'%s" - IF_FEATURE_VI_READONLY("%s") - " %uL, %uC", - fn, - (size < 0 ? " [New file]" : ""), - IF_FEATURE_VI_READONLY( - ((readonly_mode) ? " [Readonly]" : ""), - ) - li, (int)(end - text) - ); - } else if (strncmp(cmd, "file", i) == 0) { // what File is this - if (e >= 0) { - status_line_bold("No address allowed on this command"); - goto ret; - } - if (args[0]) { - // user wants a new filename - exp = expand_args(args); - if (exp == NULL) - goto ret; - update_filename(exp); - } else { - // user wants file status info - last_status_cksum = 0; // force status update - } - } else if (strncmp(cmd, "features", i) == 0) { // what features are available - // print out values of all features - go_bottom_and_clear_to_eol(); - cookmode(); - show_help(); - rawmode(); - Hit_Return(); - } else if (strncmp(cmd, "list", i) == 0) { // literal print line - if (!GOT_ADDRESS) { // no addr given- use defaults - q = begin_line(dot); // assume .,. for the range - r = end_line(dot); - } - go_bottom_and_clear_to_eol(); - puts("\r"); - for (; q <= r; q++) { - int c_is_no_print; - - c = *q; - c_is_no_print = (c & 0x80) && !Isprint(c); - if (c_is_no_print) { - c = '.'; - standout_start(); - } - if (c == '\n') { - write1("$\r"); - } else if (c < ' ' || c == 127) { - bb_putchar('^'); - if (c == 127) - c = '?'; - else - c += '@'; - } - bb_putchar(c); - if (c_is_no_print) - standout_end(); - } - Hit_Return(); - } else if (strncmp(cmd, "quit", i) == 0 // quit - || strncmp(cmd, "next", i) == 0 // edit next file - || strncmp(cmd, "prev", i) == 0 // edit previous file - ) { - int n; - if (useforce) { - if (*cmd == 'q') { - // force end of argv list - optind = cmdline_filecnt; - } - editing = 0; - goto ret; - } - // don't exit if the file been modified - if (modified_count) { - status_line_bold("No write since last change (:%s! overrides)", cmd); - goto ret; - } - // are there other file to edit - n = cmdline_filecnt - optind - 1; - if (*cmd == 'q' && n > 0) { - status_line_bold("%u more file(s) to edit", n); - goto ret; - } - if (*cmd == 'n' && n <= 0) { - status_line_bold("No more files to edit"); - goto ret; - } - if (*cmd == 'p') { - // are there previous files to edit - if (optind < 1) { - status_line_bold("No previous files to edit"); - goto ret; - } - optind -= 2; - } - editing = 0; - } else if (strncmp(cmd, "read", i) == 0) { // read file into text[] - int size, num; - - if (args[0]) { - // the user supplied a file name - fn = exp = expand_args(args); - if (exp == NULL) - goto ret; - init_filename(fn); - } else if (current_filename == NULL) { - // no user file name, no current name- punt - status_line_bold("No current filename"); - goto ret; - } - if (e == 0) { // user said ":0r foo" - q = text; - } else { // read after given line or current line if none given - q = next_line(GOT_ADDRESS ? find_line(e) : dot); - // read after last line - if (q == end-1) - ++q; - } - num = count_lines(text, q); - if (q == end) - num++; - { // dance around potentially-reallocated text[] - uintptr_t ofs = q - text; - size = file_insert(fn, q, 0); - q = text + ofs; - } - if (size < 0) - goto ret; // nothing was inserted - // how many lines in text[]? - li = count_lines(q, q + size - 1); - status_line("'%s'" - IF_FEATURE_VI_READONLY("%s") - " %uL, %uC", - fn, - IF_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),) - li, size - ); - dot = find_line(num); - } else if (strncmp(cmd, "rewind", i) == 0) { // rewind cmd line args - if (modified_count && !useforce) { - status_line_bold("No write since last change (:%s! overrides)", cmd); - } else { - // reset the filenames to edit - optind = -1; // start from 0th file - editing = 0; - } -# if ENABLE_FEATURE_VI_SET - } else if (strncmp(cmd, "set", i) == 0) { // set or clear features -# if ENABLE_FEATURE_VI_SETOPTS - char *argp, *argn, oldch; -# endif - // only blank is regarded as args delimiter. What about tab '\t'? - if (!args[0] || strcmp(args, "all") == 0) { - // print out values of all options -# if ENABLE_FEATURE_VI_SETOPTS - status_line_bold( - "%sautoindent " - "%sexpandtab " - "%sflash " - "%signorecase " - "%sshowmatch " - "tabstop=%u", - autoindent ? "" : "no", - expandtab ? "" : "no", - err_method ? "" : "no", - ignorecase ? "" : "no", - showmatch ? "" : "no", - tabstop - ); -# endif - goto ret; - } -# if ENABLE_FEATURE_VI_SETOPTS - argp = args; - while (*argp) { - i = 0; - if (argp[0] == 'n' && argp[1] == 'o') // "noXXX" - i = 2; - argn = skip_non_whitespace(argp); - oldch = *argn; - *argn = '\0'; - setops(argp, i); - *argn = oldch; - argp = skip_whitespace(argn); - } -# endif /* FEATURE_VI_SETOPTS */ -# endif /* FEATURE_VI_SET */ - -# if ENABLE_FEATURE_VI_SEARCH - } else if (cmd[0] == 's') { // substitute a pattern with a replacement pattern - char *F, *R, *flags; - size_t len_F, len_R; - int gflag = 0; // global replace flag - int subs = 0; // number of substitutions -# if ENABLE_FEATURE_VI_VERBOSE_STATUS - int last_line = 0, lines = 0; -# endif -# if ENABLE_FEATURE_VI_REGEX_SEARCH - regex_t preg; - int cflags; - char *Rorig; -# if ENABLE_FEATURE_VI_UNDO - int undo = 0; -# endif -# endif - - // F points to the "find" pattern - // R points to the "replace" pattern - // replace the cmd line delimiters "/" with NULs - c = buf[1]; // what is the delimiter - F = buf + 2; // start of "find" - R = strchr_backslash(F, c); // middle delimiter - if (!R) - goto colon_s_fail; - len_F = R - F; - *R++ = '\0'; // terminate "find" - flags = strchr_backslash(R, c); - if (flags) { - *flags++ = '\0'; // terminate "replace" - gflag = *flags; - } - - if (len_F) { // save "find" as last search pattern - free(last_search_pattern); - last_search_pattern = xstrdup(F - 1); - last_search_pattern[0] = '/'; - } else if (last_search_pattern[1] == '\0') { - status_line_bold("No previous search"); - goto ret; - } else { - F = last_search_pattern + 1; - len_F = strlen(F); - } - - if (!GOT_ADDRESS) { // no addr given - q = begin_line(dot); // start with cur line - r = end_line(dot); - b = e = count_lines(text, q); // cur line number - } else if (!GOT_RANGE) { // one addr given - b = e; - } - -# if ENABLE_FEATURE_VI_REGEX_SEARCH - Rorig = R; - cflags = 0; - if (ignorecase) - cflags = REG_ICASE; - memset(&preg, 0, sizeof(preg)); - if (regcomp(&preg, F, cflags) != 0) { - status_line(":s bad search pattern"); - goto regex_search_end; - } -# else - len_R = strlen(R); -# endif - - for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0 - char *ls = q; // orig line start - char *found; - vc4: -# if ENABLE_FEATURE_VI_REGEX_SEARCH - found = regex_search(q, &preg, Rorig, &len_F, &len_R, &R); -# else - found = char_search(q, F, (FORWARD << 1) | LIMITED); // search cur line only for "find" -# endif - if (found) { - uintptr_t bias; - // we found the "find" pattern - delete it - // For undo support, the first item should not be chained - // This needs to be handled differently depending on - // whether or not regex support is enabled. -# if ENABLE_FEATURE_VI_REGEX_SEARCH -# define TEST_LEN_F len_F // len_F may be zero -# define TEST_UNDO1 undo++ -# define TEST_UNDO2 undo++ -# else -# define TEST_LEN_F 1 // len_F is never zero -# define TEST_UNDO1 subs -# define TEST_UNDO2 1 -# endif - if (TEST_LEN_F) // match can be empty, no delete needed - text_hole_delete(found, found + len_F - 1, - TEST_UNDO1 ? ALLOW_UNDO_CHAIN : ALLOW_UNDO); - if (len_R != 0) { // insert the "replace" pattern, if required - bias = string_insert(found, R, - TEST_UNDO2 ? ALLOW_UNDO_CHAIN : ALLOW_UNDO); - found += bias; - ls += bias; - //q += bias; - recalculated anyway - } -# if ENABLE_FEATURE_VI_REGEX_SEARCH - free(R); -# endif - if (TEST_LEN_F || len_R != 0) { - dot = ls; - subs++; -# if ENABLE_FEATURE_VI_VERBOSE_STATUS - if (last_line != i) { - last_line = i; - ++lines; - } -# endif - } - // check for "global" :s/foo/bar/g - if (gflag == 'g') { - if ((found + len_R) < end_line(ls)) { - q = found + len_R; - goto vc4; // don't let q move past cur line - } - } - } - q = next_line(ls); - } - if (subs == 0) { - status_line_bold("No match"); - } else { - dot_skip_over_ws(); -# if ENABLE_FEATURE_VI_VERBOSE_STATUS - if (subs > 1) - status_line("%d substitutions on %d lines", subs, lines); -# endif - } -# if ENABLE_FEATURE_VI_REGEX_SEARCH - regex_search_end: - regfree(&preg); -# endif -# endif /* FEATURE_VI_SEARCH */ - } else if (strncmp(cmd, "version", i) == 0) { // show software version - status_line(BB_VER); - } else if (strncmp(cmd, "write", i) == 0 // write text to file - || strcmp(cmd, "wq") == 0 - || strcmp(cmd, "wn") == 0 - || (cmd[0] == 'x' && !cmd[1]) - ) { - int size; - //int forced = FALSE; - - // is there a file name to write to? - if (args[0]) { - struct stat statbuf; - - exp = expand_args(args); - if (exp == NULL) - goto ret; - if (!useforce && (fn == NULL || strcmp(fn, exp) != 0) && - stat(exp, &statbuf) == 0) { - status_line_bold("File exists (:w! overrides)"); - goto ret; - } - fn = exp; - init_filename(fn); - } -# if ENABLE_FEATURE_VI_READONLY - else if (readonly_mode && !useforce && fn) { - status_line_bold("'%s' is read only", fn); - goto ret; - } -# endif - //if (useforce) { - // if "fn" is not write-able, chmod u+w - // sprintf(syscmd, "chmod u+w %s", fn); - // system(syscmd); - // forced = TRUE; - //} - if (modified_count != 0 || cmd[0] != 'x') { - size = r - q + 1; - l = file_write(fn, q, r); - } else { - size = 0; - l = 0; - } - //if (useforce && forced) { - // chmod u-w - // sprintf(syscmd, "chmod u-w %s", fn); - // system(syscmd); - // forced = FALSE; - //} - if (l < 0) { - if (l == -1) - status_line_bold_errno(fn); - } else { - // how many lines written - li = count_lines(q, q + l - 1); - status_line("'%s' %uL, %uC", fn, li, l); - if (l == size) { - if (q == text && q + l == end) { - modified_count = 0; - last_modified_count = -1; - } - if (cmd[1] == 'n') { - editing = 0; - } else if (cmd[0] == 'x' || cmd[1] == 'q') { - // are there other files to edit? - int n = cmdline_filecnt - optind - 1; - if (n > 0) { - if (useforce) { - // force end of argv list - optind = cmdline_filecnt; - } else { - status_line_bold("%u more file(s) to edit", n); - goto ret; - } - } - editing = 0; - } - } - } -# if ENABLE_FEATURE_VI_YANKMARK - } else if (strncmp(cmd, "yank", i) == 0) { // yank lines - if (!GOT_ADDRESS) { // no addr given- use defaults - q = begin_line(dot); // assume .,. for the range - r = end_line(dot); - } - text_yank(q, r, YDreg, WHOLE); - li = count_lines(q, r); - status_line("Yank %d lines (%d chars) into [%c]", - li, strlen(reg[YDreg]), what_reg()); -# endif - } else { - // cmd unknown - not_implemented(cmd); - } - ret: -# if ENABLE_FEATURE_VI_COLON_EXPAND - free(exp); -# endif - dot = bound_dot(dot); // make sure "dot" is valid - return; -# if ENABLE_FEATURE_VI_SEARCH - colon_s_fail: - status_line(":s expression missing delimiters"); -# endif -#endif /* FEATURE_VI_COLON */ -} - -//----- Char Routines -------------------------------------------- -// Chars that are part of a word- -// 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz -// Chars that are Not part of a word (stoppers) -// !"#$%&'()*+,-./:;<=>?@[\]^`{|}~ -// Chars that are WhiteSpace -// TAB NEWLINE VT FF RETURN SPACE -// DO NOT COUNT NEWLINE AS WHITESPACE - -static int st_test(char *p, int type, int dir, char *tested) -{ - char c, c0, ci; - int test, inc; - - inc = dir; - c = c0 = p[0]; - ci = p[inc]; - test = 0; - - if (type == S_BEFORE_WS) { - c = ci; - test = (!isspace(c) || c == '\n'); - } - if (type == S_TO_WS) { - c = c0; - test = (!isspace(c) || c == '\n'); - } - if (type == S_OVER_WS) { - c = c0; - test = isspace(c); - } - if (type == S_END_PUNCT) { - c = ci; - test = ispunct(c); - } - if (type == S_END_ALNUM) { - c = ci; - test = (isalnum(c) || c == '_'); - } - *tested = c; - return test; -} - -static char *skip_thing(char *p, int linecnt, int dir, int type) -{ - char c; - - while (st_test(p, type, dir, &c)) { - // make sure we limit search to correct number of lines - if (c == '\n' && --linecnt < 1) - break; - if (dir >= 0 && p >= end - 1) - break; - if (dir < 0 && p <= text) - break; - p += dir; // move to next char - } - return p; -} - -#if ENABLE_FEATURE_VI_USE_SIGNALS -static void winch_handler(int sig UNUSED_PARAM) -{ - int save_errno = errno; - // FIXME: do it in main loop!!! - signal(SIGWINCH, winch_handler); - query_screen_dimensions(); - new_screen(rows, columns); // get memory for virtual screen - redraw(TRUE); // re-draw the screen - errno = save_errno; -} -static void tstp_handler(int sig UNUSED_PARAM) -{ - int save_errno = errno; - - // ioctl inside cookmode() was seen to generate SIGTTOU, - // stopping us too early. Prevent that: - signal(SIGTTOU, SIG_IGN); - - go_bottom_and_clear_to_eol(); - cookmode(); // terminal to "cooked" - - // stop now - //signal(SIGTSTP, SIG_DFL); - //raise(SIGTSTP); - raise(SIGSTOP); // avoid "dance" with TSTP handler - use SIGSTOP instead - //signal(SIGTSTP, tstp_handler); - - // we have been "continued" with SIGCONT, restore screen and termios - rawmode(); // terminal to "raw" - last_status_cksum = 0; // force status update - redraw(TRUE); // re-draw the screen - - errno = save_errno; -} -static void int_handler(int sig) -{ - signal(SIGINT, int_handler); - siglongjmp(restart, sig); -} -#endif /* FEATURE_VI_USE_SIGNALS */ - -static void do_cmd(int c); - -static int at_eof(const char *s) -{ - // does 's' point to end of file, even with no terminating newline? - return ((s == end - 2 && s[1] == '\n') || s == end - 1); -} - -static int find_range(char **start, char **stop, int cmd) -{ - char *p, *q, *t; - int buftype = -1; - int c; - - p = q = dot; - -#if ENABLE_FEATURE_VI_YANKMARK - if (cmd == 'Y') { - c = 'y'; - } else -#endif - { - c = get_motion_char(); - } - -#if ENABLE_FEATURE_VI_YANKMARK - if ((cmd == 'Y' || cmd == c) && strchr("cdy><", c)) { -#else - if (cmd == c && strchr("cd><", c)) { -#endif - // these cmds operate on whole lines - buftype = WHOLE; - if (--cmdcnt > 0) { - do_cmd('j'); - if (cmd_error) - buftype = -1; - } - } else if (strchr("^%$0bBeEfFtThnN/?|{}\b\177", c)) { - // Most operate on char positions within a line. Of those that - // don't '%' needs no special treatment, search commands are - // marked as MULTI and "{}" are handled below. - buftype = strchr("nN/?", c) ? MULTI : PARTIAL; - do_cmd(c); // execute movement cmd - if (p == dot) // no movement is an error - buftype = -1; - } else if (strchr("wW", c)) { - buftype = MULTI; - do_cmd(c); // execute movement cmd - // step back one char, but not if we're at end of file, - // or if we are at EOF and search was for 'w' and we're at - // the start of a 'W' word. - if (dot > p && (!at_eof(dot) || (c == 'w' && ispunct(*dot)))) - dot--; - t = dot; - // don't include trailing WS as part of word - while (dot > p && isspace(*dot)) { - if (*dot-- == '\n') - t = dot; - } - // for non-change operations WS after NL is not part of word - if (cmd != 'c' && dot != t && *dot != '\n') - dot = t; - } else if (strchr("GHL+-gjk'\r\n", c)) { - // these operate on whole lines - buftype = WHOLE; - do_cmd(c); // execute movement cmd - if (cmd_error) - buftype = -1; - } else if (c == ' ' || c == 'l') { - // forward motion by character - int tmpcnt = (cmdcnt ?: 1); - buftype = PARTIAL; - do_cmd(c); // execute movement cmd - // exclude last char unless range isn't what we expected - // this indicates we've hit EOL - if (tmpcnt == dot - p) - dot--; - } - - if (buftype == -1) { - if (c != 27) - indicate_error(); - return buftype; - } - - q = dot; - if (q < p) { - t = q; - q = p; - p = t; - } - - // movements which don't include end of range - if (q > p) { - if (strchr("^0bBFThnN/?|\b\177", c)) { - q--; - } else if (strchr("{}", c)) { - buftype = (p == begin_line(p) && (*q == '\n' || at_eof(q))) ? - WHOLE : MULTI; - if (!at_eof(q)) { - q--; - if (q > p && p != begin_line(p)) - q--; - } - } - } - - *start = p; - *stop = q; - return buftype; -} - -//--------------------------------------------------------------------- -//----- the Ascii Chart ----------------------------------------------- -// 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel -// 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si -// 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb -// 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us -// 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 ' -// 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f / -// 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7 -// 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ? -// 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G -// 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O -// 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W -// 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _ -// 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g -// 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o -// 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w -// 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del -//--------------------------------------------------------------------- - -//----- Execute a Vi Command ----------------------------------- -static void do_cmd(int c) -{ - char *p, *q, *save_dot; - char buf[12]; - int dir; - int cnt, i, j; - int c1; -#if ENABLE_FEATURE_VI_YANKMARK - char *orig_dot = dot; -#endif -#if ENABLE_FEATURE_VI_UNDO - int allow_undo = ALLOW_UNDO; - int undo_del = UNDO_DEL; -#endif - -// c1 = c; // quiet the compiler -// cnt = yf = 0; // quiet the compiler -// p = q = save_dot = buf; // quiet the compiler - memset(buf, '\0', sizeof(buf)); - keep_index = FALSE; - cmd_error = FALSE; - - show_status_line(); - - // if this is a cursor key, skip these checks - switch (c) { - case KEYCODE_UP: - case KEYCODE_DOWN: - case KEYCODE_LEFT: - case KEYCODE_RIGHT: - case KEYCODE_HOME: - case KEYCODE_END: - case KEYCODE_PAGEUP: - case KEYCODE_PAGEDOWN: - case KEYCODE_DELETE: - goto key_cmd_mode; - } - - if (cmd_mode == 2) { - // flip-flop Insert/Replace mode - if (c == KEYCODE_INSERT) - goto dc_i; - // we are 'R'eplacing the current *dot with new char - if (*dot == '\n') { - // don't Replace past E-o-l - cmd_mode = 1; // convert to insert - undo_queue_commit(); - } else { - if (1 <= c || Isprint(c)) { - if (c != 27 && !isbackspace(c)) - dot = yank_delete(dot, dot, PARTIAL, YANKDEL, ALLOW_UNDO); - dot = char_insert(dot, c, ALLOW_UNDO_CHAIN); - } - goto dc1; - } - } - if (cmd_mode == 1) { - // hitting "Insert" twice means "R" replace mode - if (c == KEYCODE_INSERT) goto dc5; - // insert the char c at "dot" - if (1 <= c || Isprint(c)) { - dot = char_insert(dot, c, ALLOW_UNDO_QUEUED); - } - goto dc1; - } - - key_cmd_mode: - switch (c) { - //case 0x01: // soh - //case 0x09: // ht - //case 0x0b: // vt - //case 0x0e: // so - //case 0x0f: // si - //case 0x10: // dle - //case 0x11: // dc1 - //case 0x13: // dc3 -#if ENABLE_FEATURE_VI_CRASHME - case 0x14: // dc4 ctrl-T - crashme = (crashme == 0) ? 1 : 0; - break; -#endif - //case 0x16: // syn - //case 0x17: // etb - //case 0x18: // can - //case 0x1c: // fs - //case 0x1d: // gs - //case 0x1e: // rs - //case 0x1f: // us - //case '!': // !- - //case '#': // #- - //case '&': // &- - //case '(': // (- - //case ')': // )- - //case '*': // *- - //case '=': // =- - //case '@': // @- - //case 'K': // K- - //case 'Q': // Q- - //case 'S': // S- - //case 'V': // V- - //case '[': // [- - //case '\\': // \- - //case ']': // ]- - //case '_': // _- - //case '`': // `- - //case 'v': // v- - default: // unrecognized command - buf[0] = c; - buf[1] = '\0'; - not_implemented(buf); - end_cmd_q(); // stop adding to q - case 0x00: // nul- ignore - break; - case 2: // ctrl-B scroll up full screen - case KEYCODE_PAGEUP: // Cursor Key Page Up - dot_scroll(rows - 2, -1); - break; - case 4: // ctrl-D scroll down half screen - dot_scroll((rows - 2) / 2, 1); - break; - case 5: // ctrl-E scroll down one line - dot_scroll(1, 1); - break; - case 6: // ctrl-F scroll down full screen - case KEYCODE_PAGEDOWN: // Cursor Key Page Down - dot_scroll(rows - 2, 1); - break; - case 7: // ctrl-G show current status - last_status_cksum = 0; // force status update - break; - case 'h': // h- move left - case KEYCODE_LEFT: // cursor key Left - case 8: // ctrl-H- move left (This may be ERASE char) - case 0x7f: // DEL- move left (This may be ERASE char) - do { - dot_left(); - } while (--cmdcnt > 0); - break; - case 10: // Newline ^J - case 'j': // j- goto next line, same col - case KEYCODE_DOWN: // cursor key Down - case 13: // Carriage Return ^M - case '+': // +- goto next line - q = dot; - do { - p = next_line(q); - if (p == end_line(q)) { - indicate_error(); - goto dc1; - } - q = p; - } while (--cmdcnt > 0); - dot = q; - if (c == 13 || c == '+') { - dot_skip_over_ws(); - } else { - // try to stay in saved column - dot = cindex == C_END ? end_line(dot) : move_to_col(dot, cindex); - keep_index = TRUE; - } - break; - case 12: // ctrl-L force redraw whole screen - case 18: // ctrl-R force redraw - redraw(TRUE); // this will redraw the entire display - break; - case 21: // ctrl-U scroll up half screen - dot_scroll((rows - 2) / 2, -1); - break; - case 25: // ctrl-Y scroll up one line - dot_scroll(1, -1); - break; - case 27: // esc - if (cmd_mode == 0) - indicate_error(); - cmd_mode = 0; // stop inserting - undo_queue_commit(); - end_cmd_q(); - last_status_cksum = 0; // force status update - break; - case ' ': // move right - case 'l': // move right - case KEYCODE_RIGHT: // Cursor Key Right - do { - dot_right(); - } while (--cmdcnt > 0); - break; -#if ENABLE_FEATURE_VI_YANKMARK - case '"': // "- name a register to use for Delete/Yank - c1 = (get_one_char() | 0x20) - 'a'; // | 0x20 is tolower() - if ((unsigned)c1 <= 25) { // a-z? - YDreg = c1; - } else { - indicate_error(); - } - break; - case '\'': // '- goto a specific mark - c1 = (get_one_char() | 0x20); - if ((unsigned)(c1 - 'a') <= 25) { // a-z? - c1 = (c1 - 'a'); - // get the b-o-l - q = mark[c1]; - if (text <= q && q < end) { - dot = q; - dot_begin(); // go to B-o-l - dot_skip_over_ws(); - } else { - indicate_error(); - } - } else if (c1 == '\'') { // goto previous context - dot = swap_context(dot); // swap current and previous context - dot_begin(); // go to B-o-l - dot_skip_over_ws(); -#if ENABLE_FEATURE_VI_YANKMARK - orig_dot = dot; // this doesn't update stored contexts -#endif - } else { - indicate_error(); - } - break; - case 'm': // m- Mark a line - // this is really stupid. If there are any inserts or deletes - // between text[0] and dot then this mark will not point to the - // correct location! It could be off by many lines! - // Well..., at least its quick and dirty. - c1 = (get_one_char() | 0x20) - 'a'; - if ((unsigned)c1 <= 25) { // a-z? - // remember the line - mark[c1] = dot; - } else { - indicate_error(); - } - break; - case 'P': // P- Put register before - case 'p': // p- put register after - p = reg[YDreg]; - if (p == NULL) { - status_line_bold("Nothing in register %c", what_reg()); - break; - } - cnt = 0; - i = cmdcnt ?: 1; - // are we putting whole lines or strings - if (regtype[YDreg] == WHOLE) { - if (c == 'P') { - dot_begin(); // putting lines- Put above - } - else /* if ( c == 'p') */ { - // are we putting after very last line? - if (end_line(dot) == (end - 1)) { - dot = end; // force dot to end of text[] - } else { - dot_next(); // next line, then put before - } - } - } else { - if (c == 'p') - dot_right(); // move to right, can move to NL - // how far to move cursor if register doesn't have a NL - if (strchr(p, '\n') == NULL) - cnt = i * strlen(p) - 1; - } - do { - // dot is adjusted if text[] is reallocated so we don't have to - string_insert(dot, p, allow_undo); // insert the string -# if ENABLE_FEATURE_VI_UNDO - allow_undo = ALLOW_UNDO_CHAIN; -# endif - } while (--cmdcnt > 0); - dot += cnt; - dot_skip_over_ws(); -# if ENABLE_FEATURE_VI_YANKMARK && ENABLE_FEATURE_VI_VERBOSE_STATUS - yank_status("Put", p, i); -# endif - end_cmd_q(); // stop adding to q - break; - case 'U': // U- Undo; replace current line with original version - if (reg[Ureg] != NULL) { - p = begin_line(dot); - q = end_line(dot); - p = text_hole_delete(p, q, ALLOW_UNDO); // delete cur line - p += string_insert(p, reg[Ureg], ALLOW_UNDO_CHAIN); // insert orig line - dot = p; - dot_skip_over_ws(); -# if ENABLE_FEATURE_VI_YANKMARK && ENABLE_FEATURE_VI_VERBOSE_STATUS - yank_status("Undo", reg[Ureg], 1); -# endif - } - break; -#endif /* FEATURE_VI_YANKMARK */ -#if ENABLE_FEATURE_VI_UNDO - case 'u': // u- undo last operation - undo_pop(); - break; -#endif - case '$': // $- goto end of line - case KEYCODE_END: // Cursor Key End - for (;;) { - dot = end_line(dot); - if (--cmdcnt <= 0) - break; - dot_next(); - } - cindex = C_END; - keep_index = TRUE; - break; - case '%': // %- find matching char of pair () [] {} - for (q = dot; q < end && *q != '\n'; q++) { - if (strchr("()[]{}", *q) != NULL) { - // we found half of a pair - p = find_pair(q, *q); - if (p == NULL) { - indicate_error(); - } else { - dot = p; - } - break; - } - } - if (*q == '\n') - indicate_error(); - break; - case 'f': // f- forward to a user specified char - case 'F': // F- backward to a user specified char - case 't': // t- move to char prior to next x - case 'T': // T- move to char after previous x - last_search_char = get_one_char(); // get the search char - last_search_cmd = c; - // fall through - case ';': // ;- look at rest of line for last search char - case ',': // ,- repeat latest search in opposite direction - dot_to_char(c != ',' ? last_search_cmd : last_search_cmd ^ 0x20); - break; -#if ENABLE_FEATURE_VI_DOT_CMD - case '.': // .- repeat the last modifying command - // Stuff the last_modifying_cmd back into stdin - // and let it be re-executed. - if (lmc_len != 0) { - if (cmdcnt) // update saved count if current count is non-zero - dotcnt = cmdcnt; - last_modifying_cmd[lmc_len] = '\0'; - ioq = ioq_start = xasprintf("%u%s", dotcnt, last_modifying_cmd); - } - break; -#endif -#if ENABLE_FEATURE_VI_SEARCH - case 'N': // N- backward search for last pattern - dir = last_search_pattern[0] == '/' ? BACK : FORWARD; - goto dc4; // now search for pattern - break; - case '?': // ?- backward search for a pattern - case '/': // /- forward search for a pattern - buf[0] = c; - buf[1] = '\0'; - q = get_input_line(buf); // get input line- use "status line" - if (!q[0]) // user changed mind and erased the "/"- do nothing - break; - if (!q[1]) { // if no pat re-use old pat - if (last_search_pattern[0]) - last_search_pattern[0] = c; - } else { // strlen(q) > 1: new pat- save it and find - free(last_search_pattern); - last_search_pattern = xstrdup(q); - } - // fall through - case 'n': // n- repeat search for last pattern - // search rest of text[] starting at next char - // if search fails "dot" is unchanged - dir = last_search_pattern[0] == '/' ? FORWARD : BACK; - dc4: - if (last_search_pattern[1] == '\0') { - status_line_bold("No previous search"); - break; - } - do { - q = char_search(dot + dir, last_search_pattern + 1, - (dir << 1) | FULL); - if (q != NULL) { - dot = q; // good search, update "dot" - } else { - // no pattern found between "dot" and top/bottom of file - // continue from other end of file - const char *msg; - q = char_search(dir == FORWARD ? text : end - 1, - last_search_pattern + 1, (dir << 1) | FULL); - if (q != NULL) { // found something - dot = q; // found new pattern- goto it - msg = "search hit %s, continuing at %s"; - } else { // pattern is nowhere in file - cmdcnt = 0; // force exit from loop - msg = "Pattern not found"; - } - if (dir == FORWARD) - status_line_bold(msg, "BOTTOM", "TOP"); - else - status_line_bold(msg, "TOP", "BOTTOM"); - } - } while (--cmdcnt > 0); - break; - case '{': // {- move backward paragraph - case '}': // }- move forward paragraph - dir = c == '}' ? FORWARD : BACK; - do { - int skip = TRUE; // initially skip consecutive empty lines - while (dir == FORWARD ? dot < end - 1 : dot > text) { - if (*dot == '\n' && dot[dir] == '\n') { - if (!skip) { - if (dir == FORWARD) - ++dot; // move to next blank line - goto dc2; - } - } - else { - skip = FALSE; - } - dot += dir; - } - goto dc6; // end of file - dc2: continue; - } while (--cmdcnt > 0); - break; -#endif /* FEATURE_VI_SEARCH */ - case '0': // 0- goto beginning of line - case '1': // 1- - case '2': // 2- - case '3': // 3- - case '4': // 4- - case '5': // 5- - case '6': // 6- - case '7': // 7- - case '8': // 8- - case '9': // 9- - if (c == '0' && cmdcnt < 1) { - dot_begin(); // this was a standalone zero - } else { - cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number - } - break; - case ':': // :- the colon mode commands - p = get_input_line(":"); // get input line- use "status line" - colon(p); // execute the command - break; - case '<': // <- Left shift something - case '>': // >- Right shift something - cnt = count_lines(text, dot); // remember what line we are on - if (find_range(&p, &q, c) == -1) - goto dc6; - i = count_lines(p, q); // # of lines we are shifting - for (p = begin_line(p); i > 0; i--, p = next_line(p)) { - if (c == '<') { - // shift left- remove tab or tabstop spaces - if (*p == '\t') { - // shrink buffer 1 char - text_hole_delete(p, p, allow_undo); - } else if (*p == ' ') { - // we should be calculating columns, not just SPACE - for (j = 0; *p == ' ' && j < tabstop; j++) { - text_hole_delete(p, p, allow_undo); -#if ENABLE_FEATURE_VI_UNDO - allow_undo = ALLOW_UNDO_CHAIN; -#endif - } - } - } else if (/* c == '>' && */ p != end_line(p)) { - // shift right -- add tab or tabstop spaces on non-empty lines - char_insert(p, '\t', allow_undo); - } -#if ENABLE_FEATURE_VI_UNDO - allow_undo = ALLOW_UNDO_CHAIN; -#endif - } - dot = find_line(cnt); // what line were we on - dot_skip_over_ws(); - end_cmd_q(); // stop adding to q - break; - case 'A': // A- append at e-o-l - dot_end(); // go to e-o-l - //**** fall through to ... 'a' - case 'a': // a- append after current char - if (*dot != '\n') - dot++; - goto dc_i; - break; - case 'B': // B- back a blank-delimited Word - case 'E': // E- end of a blank-delimited word - case 'W': // W- forward a blank-delimited word - dir = FORWARD; - if (c == 'B') - dir = BACK; - do { - if (c == 'W' || isspace(dot[dir])) { - dot = skip_thing(dot, 1, dir, S_TO_WS); - dot = skip_thing(dot, 2, dir, S_OVER_WS); - } - if (c != 'W') - dot = skip_thing(dot, 1, dir, S_BEFORE_WS); - } while (--cmdcnt > 0); - break; - case 'C': // C- Change to e-o-l - case 'D': // D- delete to e-o-l - save_dot = dot; - dot = dollar_line(dot); // move to before NL - // copy text into a register and delete - dot = yank_delete(save_dot, dot, PARTIAL, YANKDEL, ALLOW_UNDO); // delete to e-o-l - if (c == 'C') - goto dc_i; // start inserting -#if ENABLE_FEATURE_VI_DOT_CMD - if (c == 'D') - end_cmd_q(); // stop adding to q -#endif - break; - case 'g': // 'gg' goto a line number (vim) (default: very first line) - c1 = get_one_char(); - if (c1 != 'g') { - buf[0] = 'g'; - // c1 < 0 if the key was special. Try "g" - // TODO: if Unicode? - buf[1] = (c1 >= 0 ? c1 : '*'); - buf[2] = '\0'; - not_implemented(buf); - cmd_error = TRUE; - break; - } - if (cmdcnt == 0) - cmdcnt = 1; - // fall through - case 'G': // G- goto to a line number (default= E-O-F) - dot = end - 1; // assume E-O-F - if (cmdcnt > 0) { - dot = find_line(cmdcnt); // what line is #cmdcnt - } - dot_begin(); - dot_skip_over_ws(); - break; - case 'H': // H- goto top line on screen - dot = screenbegin; - if (cmdcnt > (rows - 1)) { - cmdcnt = (rows - 1); - } - while (--cmdcnt > 0) { - dot_next(); - } - dot_begin(); - dot_skip_over_ws(); - break; - case 'I': // I- insert before first non-blank - dot_begin(); // 0 - dot_skip_over_ws(); - //**** fall through to ... 'i' - case 'i': // i- insert before current char - case KEYCODE_INSERT: // Cursor Key Insert - dc_i: -#if ENABLE_FEATURE_VI_SETOPTS - newindent = -1; -#endif - cmd_mode = 1; // start inserting - undo_queue_commit(); // commit queue when cmd_mode changes - break; - case 'J': // J- join current and next lines together - do { - dot_end(); // move to NL - if (dot < end - 1) { // make sure not last char in text[] -#if ENABLE_FEATURE_VI_UNDO - undo_push(dot, 1, UNDO_DEL); - *dot++ = ' '; // replace NL with space - undo_push((dot - 1), 1, UNDO_INS_CHAIN); -#else - *dot++ = ' '; - modified_count++; -#endif - while (isblank(*dot)) { // delete leading WS - text_hole_delete(dot, dot, ALLOW_UNDO_CHAIN); - } - } - } while (--cmdcnt > 0); - end_cmd_q(); // stop adding to q - break; - case 'L': // L- goto bottom line on screen - dot = end_screen(); - if (cmdcnt > (rows - 1)) { - cmdcnt = (rows - 1); - } - while (--cmdcnt > 0) { - dot_prev(); - } - dot_begin(); - dot_skip_over_ws(); - break; - case 'M': // M- goto middle line on screen - dot = screenbegin; - for (cnt = 0; cnt < (rows-1) / 2; cnt++) - dot = next_line(dot); - dot_skip_over_ws(); - break; - case 'O': // O- open an empty line above - dot_begin(); -#if ENABLE_FEATURE_VI_SETOPTS - // special case: use indent of current line - newindent = get_column(dot + indent_len(dot)); -#endif - goto dc3; - case 'o': // o- open an empty line below - dot_end(); - dc3: -#if ENABLE_FEATURE_VI_SETOPTS - cmd_mode = 1; // switch to insert mode early -#endif - dot = char_insert(dot, '\n', ALLOW_UNDO); - if (c == 'O' && !autoindent) { - // done in char_insert() for 'O'+autoindent - dot_prev(); - } - goto dc_i; - break; - case 'R': // R- continuous Replace char - dc5: - cmd_mode = 2; - undo_queue_commit(); - rstart = dot; - break; - case KEYCODE_DELETE: - if (dot < end - 1) - dot = yank_delete(dot, dot, PARTIAL, YANKDEL, ALLOW_UNDO); - break; - case 'X': // X- delete char before dot - case 'x': // x- delete the current char - case 's': // s- substitute the current char - dir = 0; - if (c == 'X') - dir = -1; - do { - if (dot[dir] != '\n') { - if (c == 'X') - dot--; // delete prev char - dot = yank_delete(dot, dot, PARTIAL, YANKDEL, allow_undo); // delete char -#if ENABLE_FEATURE_VI_UNDO - allow_undo = ALLOW_UNDO_CHAIN; -#endif - } - } while (--cmdcnt > 0); - end_cmd_q(); // stop adding to q - if (c == 's') - goto dc_i; // start inserting - break; - case 'Z': // Z- if modified, {write}; exit - c1 = get_one_char(); - // ZQ means to exit without saving - if (c1 == 'Q') { - editing = 0; - optind = cmdline_filecnt; - break; - } - // ZZ means to save file (if necessary), then exit - if (c1 != 'Z') { - indicate_error(); - break; - } - if (modified_count) { - if (ENABLE_FEATURE_VI_READONLY && readonly_mode && current_filename) { - status_line_bold("'%s' is read only", current_filename); - break; - } - cnt = file_write(current_filename, text, end - 1); - if (cnt < 0) { - if (cnt == -1) - status_line_bold("Write error: "STRERROR_FMT STRERROR_ERRNO); - } else if (cnt == (end - 1 - text + 1)) { - editing = 0; - } - } else { - editing = 0; - } - // are there other files to edit? - j = cmdline_filecnt - optind - 1; - if (editing == 0 && j > 0) { - editing = 1; - modified_count = 0; - last_modified_count = -1; - status_line_bold("%u more file(s) to edit", j); - } - break; - case '^': // ^- move to first non-blank on line - dot_begin(); - dot_skip_over_ws(); - break; - case 'b': // b- back a word - case 'e': // e- end of word - dir = FORWARD; - if (c == 'b') - dir = BACK; - do { - if ((dot + dir) < text || (dot + dir) > end - 1) - break; - dot += dir; - if (isspace(*dot)) { - dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS); - } - if (isalnum(*dot) || *dot == '_') { - dot = skip_thing(dot, 1, dir, S_END_ALNUM); - } else if (ispunct(*dot)) { - dot = skip_thing(dot, 1, dir, S_END_PUNCT); - } - } while (--cmdcnt > 0); - break; - case 'c': // c- change something - case 'd': // d- delete something -#if ENABLE_FEATURE_VI_YANKMARK - case 'y': // y- yank something - case 'Y': // Y- Yank a line -#endif - { - int yf = YANKDEL; // assume either "c" or "d" - int buftype; -#if ENABLE_FEATURE_VI_YANKMARK -# if ENABLE_FEATURE_VI_VERBOSE_STATUS - char *savereg = reg[YDreg]; -# endif - if (c == 'y' || c == 'Y') - yf = YANKONLY; -#endif - // determine range, and whether it spans lines - buftype = find_range(&p, &q, c); - if (buftype == -1) // invalid range - goto dc6; - if (buftype == WHOLE) { - save_dot = p; // final cursor position is start of range - p = begin_line(p); -#if ENABLE_FEATURE_VI_SETOPTS - if (c == 'c') // special case: use indent of current line - newindent = get_column(p + indent_len(p)); -#endif - q = end_line(q); - } - dot = yank_delete(p, q, buftype, yf, ALLOW_UNDO); // delete word - if (buftype == WHOLE) { - if (c == 'c') { -#if ENABLE_FEATURE_VI_SETOPTS - cmd_mode = 1; // switch to insert mode early -#endif - dot = char_insert(dot, '\n', ALLOW_UNDO_CHAIN); - // on the last line of file don't move to prev line, - // handled in char_insert() if autoindent is enabled - if (dot != (end-1) && !autoindent) { - dot_prev(); - } - } else if (c == 'd') { - dot_begin(); - dot_skip_over_ws(); - } else { - dot = save_dot; - } - } - // if CHANGING, not deleting, start inserting after the delete - if (c == 'c') { - goto dc_i; // start inserting - } -#if ENABLE_FEATURE_VI_YANKMARK && ENABLE_FEATURE_VI_VERBOSE_STATUS - // only update status if a yank has actually happened - if (reg[YDreg] != savereg) - yank_status(c == 'd' ? "Delete" : "Yank", reg[YDreg], 1); -#endif - dc6: - end_cmd_q(); // stop adding to q - break; - } - case 'k': // k- goto prev line, same col - case KEYCODE_UP: // cursor key Up - case '-': // -- goto prev line - q = dot; - do { - p = prev_line(q); - if (p == begin_line(q)) { - indicate_error(); - goto dc1; - } - q = p; - } while (--cmdcnt > 0); - dot = q; - if (c == '-') { - dot_skip_over_ws(); - } else { - // try to stay in saved column - dot = cindex == C_END ? end_line(dot) : move_to_col(dot, cindex); - keep_index = TRUE; - } - break; - case 'r': // r- replace the current char with user input - c1 = get_one_char(); // get the replacement char - if (c1 != 27) { - if (end_line(dot) - dot < (cmdcnt ?: 1)) { - indicate_error(); - goto dc6; - } - do { - dot = text_hole_delete(dot, dot, allow_undo); -#if ENABLE_FEATURE_VI_UNDO - allow_undo = ALLOW_UNDO_CHAIN; -#endif - dot = char_insert(dot, c1, allow_undo); - } while (--cmdcnt > 0); - dot_left(); - } - end_cmd_q(); // stop adding to q - break; - case 'w': // w- forward a word - do { - if (isalnum(*dot) || *dot == '_') { // we are on ALNUM - dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM); - } else if (ispunct(*dot)) { // we are on PUNCT - dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT); - } - if (dot < end - 1) - dot++; // move over word - if (isspace(*dot)) { - dot = skip_thing(dot, 2, FORWARD, S_OVER_WS); - } - } while (--cmdcnt > 0); - break; - case 'z': // z- - c1 = get_one_char(); // get the replacement char - cnt = 0; - if (c1 == '.') - cnt = (rows - 2) / 2; // put dot at center - if (c1 == '-') - cnt = rows - 2; // put dot at bottom - screenbegin = begin_line(dot); // start dot at top - dot_scroll(cnt, -1); - break; - case '|': // |- move to column "cmdcnt" - dot = move_to_col(dot, cmdcnt - 1); // try to move to column - break; - case '~': // ~- flip the case of letters a-z -> A-Z - do { -#if ENABLE_FEATURE_VI_UNDO - if (isalpha(*dot)) { - undo_push(dot, 1, undo_del); - *dot = islower(*dot) ? toupper(*dot) : tolower(*dot); - undo_push(dot, 1, UNDO_INS_CHAIN); - undo_del = UNDO_DEL_CHAIN; - } -#else - if (islower(*dot)) { - *dot = toupper(*dot); - modified_count++; - } else if (isupper(*dot)) { - *dot = tolower(*dot); - modified_count++; - } -#endif - dot_right(); - } while (--cmdcnt > 0); - end_cmd_q(); // stop adding to q - break; - //----- The Cursor and Function Keys ----------------------------- - case KEYCODE_HOME: // Cursor Key Home - dot_begin(); - break; - // The Fn keys could point to do_macro which could translate them -#if 0 - case KEYCODE_FUN1: // Function Key F1 - case KEYCODE_FUN2: // Function Key F2 - case KEYCODE_FUN3: // Function Key F3 - case KEYCODE_FUN4: // Function Key F4 - case KEYCODE_FUN5: // Function Key F5 - case KEYCODE_FUN6: // Function Key F6 - case KEYCODE_FUN7: // Function Key F7 - case KEYCODE_FUN8: // Function Key F8 - case KEYCODE_FUN9: // Function Key F9 - case KEYCODE_FUN10: // Function Key F10 - case KEYCODE_FUN11: // Function Key F11 - case KEYCODE_FUN12: // Function Key F12 - break; -#endif - } - - dc1: - // if text[] just became empty, add back an empty line - if (end == text) { - char_insert(text, '\n', NO_UNDO); // start empty buf with dummy line - dot = text; - } - // it is OK for dot to exactly equal to end, otherwise check dot validity - if (dot != end) { - dot = bound_dot(dot); // make sure "dot" is valid - } -#if ENABLE_FEATURE_VI_YANKMARK - if (dot != orig_dot) - check_context(c); // update the current context -#endif - - if (!isdigit(c)) - cmdcnt = 0; // cmd was not a number, reset cmdcnt - cnt = dot - begin_line(dot); - // Try to stay off of the Newline - if (*dot == '\n' && cnt > 0 && cmd_mode == 0) - dot--; -} - -// NB! the CRASHME code is unmaintained, and doesn't currently build -#if ENABLE_FEATURE_VI_CRASHME -static int totalcmds = 0; -static int Mp = 85; // Movement command Probability -static int Np = 90; // Non-movement command Probability -static int Dp = 96; // Delete command Probability -static int Ip = 97; // Insert command Probability -static int Yp = 98; // Yank command Probability -static int Pp = 99; // Put command Probability -static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0; -static const char chars[20] = "\t012345 abcdABCD-=.$"; -static const char *const words[20] = { - "this", "is", "a", "test", - "broadcast", "the", "emergency", "of", - "system", "quick", "brown", "fox", - "jumped", "over", "lazy", "dogs", - "back", "January", "Febuary", "March" -}; -static const char *const lines[20] = { - "You should have received a copy of the GNU General Public License\n", - "char c, cm, *cmd, *cmd1;\n", - "generate a command by percentages\n", - "Numbers may be typed as a prefix to some commands.\n", - "Quit, discarding changes!\n", - "Forced write, if permission originally not valid.\n", - "In general, any ex or ed command (such as substitute or delete).\n", - "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", - "Please get w/ me and I will go over it with you.\n", - "The following is a list of scheduled, committed changes.\n", - "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", - "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", - "Any question about transactions please contact Sterling Huxley.\n", - "I will try to get back to you by Friday, December 31.\n", - "This Change will be implemented on Friday.\n", - "Let me know if you have problems accessing this;\n", - "Sterling Huxley recently added you to the access list.\n", - "Would you like to go to lunch?\n", - "The last command will be automatically run.\n", - "This is too much english for a computer geek.\n", -}; -static char *multilines[20] = { - "You should have received a copy of the GNU General Public License\n", - "char c, cm, *cmd, *cmd1;\n", - "generate a command by percentages\n", - "Numbers may be typed as a prefix to some commands.\n", - "Quit, discarding changes!\n", - "Forced write, if permission originally not valid.\n", - "In general, any ex or ed command (such as substitute or delete).\n", - "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", - "Please get w/ me and I will go over it with you.\n", - "The following is a list of scheduled, committed changes.\n", - "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", - "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", - "Any question about transactions please contact Sterling Huxley.\n", - "I will try to get back to you by Friday, December 31.\n", - "This Change will be implemented on Friday.\n", - "Let me know if you have problems accessing this;\n", - "Sterling Huxley recently added you to the access list.\n", - "Would you like to go to lunch?\n", - "The last command will be automatically run.\n", - "This is too much english for a computer geek.\n", -}; - -// create a random command to execute -static void crash_dummy() -{ - static int sleeptime; // how long to pause between commands - char c, cm, *cmd, *cmd1; - int i, cnt, thing, rbi, startrbi, percent; - - // "dot" movement commands - cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL"; - - // is there already a command running? - if (readbuffer[0] > 0) - goto cd1; - cd0: - readbuffer[0] = 'X'; - startrbi = rbi = 1; - sleeptime = 0; // how long to pause between commands - memset(readbuffer, '\0', sizeof(readbuffer)); - // generate a command by percentages - percent = (int) lrand48() % 100; // get a number from 0-99 - if (percent < Mp) { // Movement commands - // available commands - cmd = cmd1; - M++; - } else if (percent < Np) { // non-movement commands - cmd = "mz<>\'\""; // available commands - N++; - } else if (percent < Dp) { // Delete commands - cmd = "dx"; // available commands - D++; - } else if (percent < Ip) { // Inset commands - cmd = "iIaAsrJ"; // available commands - I++; - } else if (percent < Yp) { // Yank commands - cmd = "yY"; // available commands - Y++; - } else if (percent < Pp) { // Put commands - cmd = "pP"; // available commands - P++; - } else { - // We do not know how to handle this command, try again - U++; - goto cd0; - } - // randomly pick one of the available cmds from "cmd[]" - i = (int) lrand48() % strlen(cmd); - cm = cmd[i]; - if (strchr(":\024", cm)) - goto cd0; // dont allow colon or ctrl-T commands - readbuffer[rbi++] = cm; // put cmd into input buffer - - // now we have the command- - // there are 1, 2, and multi char commands - // find out which and generate the rest of command as necessary - if (strchr("dmryz<>\'\"", cm)) { // 2-char commands - cmd1 = " \n\r0$^-+wWeEbBhjklHL"; - if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[] - cmd1 = "abcdefghijklmnopqrstuvwxyz"; - } - thing = (int) lrand48() % strlen(cmd1); // pick a movement command - c = cmd1[thing]; - readbuffer[rbi++] = c; // add movement to input buffer - } - if (strchr("iIaAsc", cm)) { // multi-char commands - if (cm == 'c') { - // change some thing - thing = (int) lrand48() % strlen(cmd1); // pick a movement command - c = cmd1[thing]; - readbuffer[rbi++] = c; // add movement to input buffer - } - thing = (int) lrand48() % 4; // what thing to insert - cnt = (int) lrand48() % 10; // how many to insert - for (i = 0; i < cnt; i++) { - if (thing == 0) { // insert chars - readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))]; - } else if (thing == 1) { // insert words - strcat(readbuffer, words[(int) lrand48() % 20]); - strcat(readbuffer, " "); - sleeptime = 0; // how fast to type - } else if (thing == 2) { // insert lines - strcat(readbuffer, lines[(int) lrand48() % 20]); - sleeptime = 0; // how fast to type - } else { // insert multi-lines - strcat(readbuffer, multilines[(int) lrand48() % 20]); - sleeptime = 0; // how fast to type - } - } - strcat(readbuffer, ESC); - } - readbuffer[0] = strlen(readbuffer + 1); - cd1: - totalcmds++; - if (sleeptime > 0) - mysleep(sleeptime); // sleep 1/100 sec -} - -// test to see if there are any errors -static void crash_test() -{ - static time_t oldtim; - - time_t tim; - char d[2], msg[80]; - - msg[0] = '\0'; - if (end < text) { - strcat(msg, "end textend) { - strcat(msg, "end>textend "); - } - if (dot < text) { - strcat(msg, "dot end) { - strcat(msg, "dot>end "); - } - if (screenbegin < text) { - strcat(msg, "screenbegin end - 1) { - strcat(msg, "screenbegin>end-1 "); - } - - if (msg[0]) { - printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s", - totalcmds, last_input_char, msg, ESC_BOLD_TEXT, ESC_NORM_TEXT); - fflush_all(); - while (safe_read(STDIN_FILENO, d, 1) > 0) { - if (d[0] == '\n' || d[0] == '\r') - break; - } - } - tim = time(NULL); - if (tim >= (oldtim + 3)) { - sprintf(status_buffer, - "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d", - totalcmds, M, N, I, D, Y, P, U, end - text + 1); - oldtim = tim; - } -} -#endif - -#if ENABLE_FEATURE_VI_COLON -static void run_cmds(char *p) -{ - while (p) { - char *q = p; - p = strchr(q, '\n'); - if (p) - while (*p == '\n') - *p++ = '\0'; - if (strlen(q) < MAX_INPUT_LEN) - colon(q); - } -} -#endif - -static void edit_file(char *fn) -{ -#if ENABLE_FEATURE_VI_YANKMARK -#define cur_line edit_file__cur_line -#endif - int c; -#if ENABLE_FEATURE_VI_USE_SIGNALS - int sig; -#endif - - editing = 1; // 0 = exit, 1 = one file, 2 = multiple files - rawmode(); - rows = 24; - columns = 80; - IF_FEATURE_VI_ASK_TERMINAL(G.get_rowcol_error =) query_screen_dimensions(); -#if ENABLE_FEATURE_VI_ASK_TERMINAL - if (G.get_rowcol_error /* TODO? && no input on stdin */) { - uint64_t k; - write1(ESC"[999;999H" ESC"[6n"); - fflush_all(); - k = safe_read_key(STDIN_FILENO, readbuffer, /*timeout_ms:*/ 100); - if ((int32_t)k == KEYCODE_CURSOR_POS) { - uint32_t rc = (k >> 32); - columns = (rc & 0x7fff); - if (columns > MAX_SCR_COLS) - columns = MAX_SCR_COLS; - rows = ((rc >> 16) & 0x7fff); - if (rows > MAX_SCR_ROWS) - rows = MAX_SCR_ROWS; - } - } -#endif - new_screen(rows, columns); // get memory for virtual screen - init_text_buffer(fn); - -#if ENABLE_FEATURE_VI_YANKMARK - YDreg = 26; // default Yank/Delete reg -// Ureg = 27; - const // hold orig line for "U" cmd - mark[26] = mark[27] = text; // init "previous context" -#endif - -#if ENABLE_FEATURE_VI_CRASHME - last_input_char = '\0'; -#endif - crow = 0; - ccol = 0; - -#if ENABLE_FEATURE_VI_USE_SIGNALS - signal(SIGWINCH, winch_handler); - signal(SIGTSTP, tstp_handler); - sig = sigsetjmp(restart, 1); - if (sig != 0) { - screenbegin = dot = text; - } - // int_handler() can jump to "restart", - // must install handler *after* initializing "restart" - signal(SIGINT, int_handler); -#endif - - cmd_mode = 0; // 0=command 1=insert 2='R'eplace - cmdcnt = 0; - offset = 0; // no horizontal offset - c = '\0'; -#if ENABLE_FEATURE_VI_DOT_CMD - free(ioq_start); - ioq_start = NULL; - adding2q = 0; -#endif - -#if ENABLE_FEATURE_VI_COLON - while (initial_cmds) - run_cmds((char *)llist_pop(&initial_cmds)); -#endif - redraw(FALSE); // dont force every col re-draw - //------This is the main Vi cmd handling loop ----------------------- - while (editing > 0) { -#if ENABLE_FEATURE_VI_CRASHME - if (crashme > 0) { - if ((end - text) > 1) { - crash_dummy(); // generate a random command - } else { - crashme = 0; - string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n", NO_UNDO); - dot = text; - refresh(FALSE); - } - } -#endif - c = get_one_char(); // get a cmd from user -#if ENABLE_FEATURE_VI_CRASHME - last_input_char = c; -#endif -#if ENABLE_FEATURE_VI_YANKMARK - // save a copy of the current line- for the 'U" command - if (begin_line(dot) != cur_line) { - cur_line = begin_line(dot); - text_yank(begin_line(dot), end_line(dot), Ureg, PARTIAL); - } -#endif -#if ENABLE_FEATURE_VI_DOT_CMD - // If c is a command that changes text[], - // (re)start remembering the input for the "." command. - if (!adding2q - && ioq_start == NULL - && cmd_mode == 0 // command mode - && c > '\0' // exclude NUL and non-ASCII chars - && c < 0x7f // (Unicode and such) - && strchr(modifying_cmds, c) - ) { - start_new_cmd_q(c); - } -#endif - do_cmd(c); // execute the user command - - // poll to see if there is input already waiting. if we are - // not able to display output fast enough to keep up, skip - // the display update until we catch up with input. - if (!readbuffer[0] && mysleep(0) == 0) { - // no input pending - so update output - refresh(FALSE); - show_status_line(); - } -#if ENABLE_FEATURE_VI_CRASHME - if (crashme > 0) - crash_test(); // test editor variables -#endif - } - //------------------------------------------------------------------- - - go_bottom_and_clear_to_eol(); - cookmode(); -#undef cur_line -} - -#define VI_OPTSTR \ - IF_FEATURE_VI_CRASHME("C") \ - IF_FEATURE_VI_COLON("c:*") \ - "Hh" \ - IF_FEATURE_VI_READONLY("R") - -enum { - IF_FEATURE_VI_CRASHME(OPTBIT_C,) - IF_FEATURE_VI_COLON(OPTBIT_c,) - OPTBIT_H, - OPTBIT_h, - IF_FEATURE_VI_READONLY(OPTBIT_R,) - OPT_C = IF_FEATURE_VI_CRASHME( (1 << OPTBIT_C)) + 0, - OPT_c = IF_FEATURE_VI_COLON( (1 << OPTBIT_c)) + 0, - OPT_H = 1 << OPTBIT_H, - OPT_h = 1 << OPTBIT_h, - OPT_R = IF_FEATURE_VI_READONLY( (1 << OPTBIT_R)) + 0, -}; - -int vi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; -int vi_main(int argc, char **argv) -{ - int opts; - - INIT_G(); - -#if ENABLE_FEATURE_VI_UNDO - //undo_stack_tail = NULL; - already is -# if ENABLE_FEATURE_VI_UNDO_QUEUE - undo_queue_state = UNDO_EMPTY; - //undo_q = 0; - already is -# endif -#endif - -#if ENABLE_FEATURE_VI_CRASHME - srand((long) getpid()); -#endif -#ifdef NO_SUCH_APPLET_YET - // if we aren't "vi", we are "view" - if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) { - SET_READONLY_MODE(readonly_mode); - } -#endif - - // 0: all of our options are disabled by default in vim - //vi_setops = 0; - opts = getopt32(argv, VI_OPTSTR IF_FEATURE_VI_COLON(, &initial_cmds)); - -#if ENABLE_FEATURE_VI_CRASHME - if (opts & OPT_C) - crashme = 1; -#endif - if (opts & OPT_R) - SET_READONLY_MODE(readonly_mode); - if (opts & OPT_H) - show_help(); - if (opts & (OPT_H | OPT_h)) { - bb_show_usage(); - return 1; - } - - argv += optind; - cmdline_filecnt = argc - optind; - - // 1- process EXINIT variable from environment - // 2- if EXINIT is unset process $HOME/.exrc file - // 3- process command line args -#if ENABLE_FEATURE_VI_COLON - { - const char *exinit = getenv("EXINIT"); - char *cmds = NULL; - - if (exinit) { - cmds = xstrdup(exinit); - } else { - const char *home = getenv("HOME"); - - if (home && *home) { - char *exrc = concat_path_file(home, ".exrc"); - struct stat st; - - // .exrc must belong to and only be writable by user - if (stat(exrc, &st) == 0) { - if ((st.st_mode & (S_IWGRP|S_IWOTH)) == 0 - && st.st_uid == getuid() - ) { - cmds = xmalloc_open_read_close(exrc, NULL); - } else { - status_line_bold(".exrc: permission denied"); - } - } - free(exrc); - } - } - - if (cmds) { - init_text_buffer(NULL); - run_cmds(cmds); - free(cmds); - } - } -#endif - // "Save cursor, use alternate screen buffer, clear screen" - write1(ESC"[?1049h"); - // This is the main file handling loop - optind = 0; - while (1) { - edit_file(argv[optind]); // might be NULL on 1st iteration - // NB: optind can be changed by ":next" and ":rewind" commands - optind++; - if (optind >= cmdline_filecnt) - break; - } - // "Use normal screen buffer, restore cursor" - write1(ESC"[?1049l"); - - return 0; -} diff --git a/Apps/Vi/manifest.properties b/Apps/Vi/manifest.properties deleted file mode 100644 index aeaac75..0000000 --- a/Apps/Vi/manifest.properties +++ /dev/null @@ -1,14 +0,0 @@ -manifest.version=0.3 -target.sdk=0.8.0-dev -target.platforms=esp32,esp32s3,esp32c6,esp32p4,posix-x86_64 -id=tactility.vi -version.name=0.1.0 -version.code=1 -name=Vi -description=BusyBox vi text editor -app.0.id=tactility.vi -app.0.name=Vi -app.0.binary=vi -app.0.hidden=true -app.0.headless=true -app.0.stack.depth=8192