5990 lines
146 KiB
C
5990 lines
146 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
|
|
*
|
|
* Copyright (C) 2012-2018 K. Lange
|
|
*
|
|
* 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.
|
|
*
|
|
* bim - Text editor
|
|
*
|
|
* Bim is inspired by vim, and its name is short for "Bad IMitation".
|
|
*
|
|
* Bim supports syntax highlighting, extensive editing, line selection
|
|
* and copy-paste, undo/redo stack, forward and backward search, and can
|
|
* be built for ToaruOS, Sortix, Linux, macOS, and BSDs.
|
|
*/
|
|
#define _XOPEN_SOURCE
|
|
#define _DEFAULT_SOURCE
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
#include <stdarg.h>
|
|
#include <unistd.h>
|
|
#include <termios.h>
|
|
#include <signal.h>
|
|
#include <locale.h>
|
|
#include <wchar.h>
|
|
#include <ctype.h>
|
|
#include <dirent.h>
|
|
#include <poll.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/stat.h>
|
|
|
|
#define BIM_VERSION "1.0.2"
|
|
#define BIM_COPYRIGHT "Copyright 2013-2018 K. Lange <\033[3mklange@toaruos.org\033[23m>"
|
|
|
|
#define BLOCK_SIZE 4096
|
|
#define ENTER_KEY '\n'
|
|
#define BACKSPACE_KEY 0x08
|
|
#define DELETE_KEY 0x7F
|
|
|
|
/**
|
|
* Theming data
|
|
*
|
|
* This is all overridden by a load_colorscheme_ method.
|
|
* The default is to load_colorscheme_ansi, but config
|
|
* files can be used to set a different default theme.
|
|
*/
|
|
const char * COLOR_FG = "@17";
|
|
const char * COLOR_BG = "@0";
|
|
const char * COLOR_ALT_FG = "@17";
|
|
const char * COLOR_ALT_BG = "@0";
|
|
const char * COLOR_NUMBER_FG = "@17";
|
|
const char * COLOR_NUMBER_BG = "@0";
|
|
const char * COLOR_STATUS_FG = "@17";
|
|
const char * COLOR_STATUS_BG = "@0";
|
|
const char * COLOR_TABBAR_BG = "@0";
|
|
const char * COLOR_TAB_BG = "@0";
|
|
const char * COLOR_ERROR_FG = "@17";
|
|
const char * COLOR_ERROR_BG = "@0";
|
|
const char * COLOR_SEARCH_FG = "@17";
|
|
const char * COLOR_SEARCH_BG = "@0";
|
|
const char * COLOR_KEYWORD = "@17";
|
|
const char * COLOR_STRING = "@17";
|
|
const char * COLOR_COMMENT = "@17";
|
|
const char * COLOR_TYPE = "@17";
|
|
const char * COLOR_PRAGMA = "@17";
|
|
const char * COLOR_NUMERAL = "@17";
|
|
const char * COLOR_SELECTFG = "@0";
|
|
const char * COLOR_SELECTBG = "@17";
|
|
const char * COLOR_RED = "@1";
|
|
const char * COLOR_GREEN = "@2";
|
|
const char * current_theme = "none";
|
|
|
|
/**
|
|
* Syntax highlighting flags.
|
|
*/
|
|
#define FLAG_NONE 0
|
|
#define FLAG_KEYWORD 1
|
|
#define FLAG_STRING 2
|
|
#define FLAG_COMMENT 3
|
|
#define FLAG_TYPE 4
|
|
#define FLAG_PRAGMA 5
|
|
#define FLAG_NUMERAL 6
|
|
#define FLAG_SELECT 7
|
|
#define FLAG_STRING2 8
|
|
#define FLAG_DIFFPLUS 9
|
|
#define FLAG_DIFFMINUS 10
|
|
|
|
#define FLAG_CONTINUES (1 << 6)
|
|
|
|
/**
|
|
* Convert syntax hilighting flag to color code
|
|
*/
|
|
const char * flag_to_color(int _flag) {
|
|
int flag = _flag & 0x3F;
|
|
switch (flag) {
|
|
case FLAG_KEYWORD:
|
|
return COLOR_KEYWORD;
|
|
case FLAG_STRING:
|
|
case FLAG_STRING2: /* allows python to differentiate " and ' */
|
|
return COLOR_STRING;
|
|
case FLAG_COMMENT:
|
|
return COLOR_COMMENT;
|
|
case FLAG_TYPE:
|
|
return COLOR_TYPE;
|
|
case FLAG_NUMERAL:
|
|
return COLOR_NUMERAL;
|
|
case FLAG_PRAGMA:
|
|
return COLOR_PRAGMA;
|
|
case FLAG_DIFFPLUS:
|
|
return COLOR_GREEN;
|
|
case FLAG_DIFFMINUS:
|
|
return COLOR_RED;
|
|
case FLAG_SELECT:
|
|
return COLOR_FG;
|
|
default:
|
|
return COLOR_FG;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Line buffer definitions
|
|
*
|
|
* Lines are essentially resizable vectors of char_t structs,
|
|
* which represent single codepoints in the file.
|
|
*/
|
|
typedef struct {
|
|
uint32_t display_width:4;
|
|
uint32_t flags:7;
|
|
uint32_t codepoint:21;
|
|
} __attribute__((packed)) char_t;
|
|
|
|
/**
|
|
* Lines have available and actual lengths, describing
|
|
* how much space was allocated vs. how much is being
|
|
* used at the moment.
|
|
*/
|
|
typedef struct {
|
|
int available;
|
|
int actual;
|
|
int istate;
|
|
char_t text[0];
|
|
} line_t;
|
|
|
|
/**
|
|
* Global configuration state
|
|
*/
|
|
struct {
|
|
/* Terminal size */
|
|
int term_width, term_height;
|
|
int bottom_size;
|
|
|
|
/* Command-line parameters */
|
|
int hilight_on_open;
|
|
int initial_file_is_read_only;
|
|
|
|
line_t ** yanks;
|
|
size_t yank_count;
|
|
int yank_is_full_lines;
|
|
|
|
int tty_in;
|
|
|
|
const char * bimrc_path;
|
|
|
|
int can_scroll;
|
|
int can_hideshow;
|
|
int can_altscreen;
|
|
int can_mouse;
|
|
int can_unicode;
|
|
int can_bright;
|
|
int can_title;
|
|
int can_bce;
|
|
int history_enabled;
|
|
|
|
int cursor_padding;
|
|
} global_config = {
|
|
0, /* term_width */
|
|
0, /* term_height */
|
|
2, /* bottom_size */
|
|
1, /* hilight_on_open */
|
|
0, /* initial_file_is_read_only */
|
|
NULL, /* yanks */
|
|
0, /* yank_count */
|
|
0,
|
|
STDIN_FILENO, /* tty_in */
|
|
"~/.bimrc", /* bimrc_path */
|
|
1,
|
|
1,
|
|
1,
|
|
1,
|
|
1,
|
|
1,
|
|
1,
|
|
1,
|
|
1,
|
|
4, /* cursor padding */
|
|
};
|
|
|
|
void redraw_line(int j, int x);
|
|
|
|
/**
|
|
* Special implementation of getch with a timeout
|
|
*/
|
|
int _bim_unget = -1;
|
|
|
|
void bim_unget(int c) {
|
|
_bim_unget = c;
|
|
}
|
|
|
|
#define bim_getch() bim_getch_timeout(200)
|
|
int bim_getch_timeout(int timeout) {
|
|
if (_bim_unget != -1) {
|
|
int out = _bim_unget;
|
|
_bim_unget = -1;
|
|
return out;
|
|
}
|
|
struct pollfd fds[1];
|
|
fds[0].fd = global_config.tty_in;
|
|
fds[0].events = POLLIN;
|
|
int ret = poll(fds,1,timeout);
|
|
if (ret > 0 && fds[0].revents & POLLIN) {
|
|
unsigned char buf[1];
|
|
read(global_config.tty_in, buf, 1);
|
|
return buf[0];
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
#define HISTORY_SENTINEL 0
|
|
#define HISTORY_INSERT 1
|
|
#define HISTORY_DELETE 2
|
|
#define HISTORY_REPLACE 3
|
|
#define HISTORY_REMOVE_LINE 4
|
|
#define HISTORY_ADD_LINE 5
|
|
#define HISTORY_REPLACE_LINE 6
|
|
#define HISTORY_MERGE_LINES 7
|
|
#define HISTORY_SPLIT_LINE 8
|
|
|
|
#define HISTORY_BREAK 10
|
|
|
|
typedef struct history {
|
|
struct history * previous;
|
|
struct history * next;
|
|
int type;
|
|
union {
|
|
struct {
|
|
int lineno;
|
|
int offset;
|
|
int codepoint;
|
|
int old_codepoint;
|
|
} insert_delete_replace;
|
|
|
|
struct {
|
|
int lineno;
|
|
line_t * contents;
|
|
line_t * old_contents;
|
|
} remove_replace_line;
|
|
|
|
struct {
|
|
int lineno;
|
|
int split;
|
|
} add_merge_split_lines;
|
|
};
|
|
} history_t;
|
|
|
|
/**
|
|
* Buffer data
|
|
*
|
|
* A buffer describes a file, and stores
|
|
* its name as well as the editor state
|
|
* (cursor offsets, etc.) and the actual
|
|
* line buffers.
|
|
*/
|
|
typedef struct _env {
|
|
short loading:1;
|
|
short tabs:1;
|
|
short modified:1;
|
|
short readonly:1;
|
|
short indent:1;
|
|
|
|
short mode;
|
|
short tabstop;
|
|
|
|
char * file_name;
|
|
int offset;
|
|
int coffset;
|
|
int line_no;
|
|
int line_count;
|
|
int line_avail;
|
|
int col_no;
|
|
uint32_t * search;
|
|
struct syntax_definition * syntax;
|
|
line_t ** lines;
|
|
|
|
history_t * history;
|
|
history_t * last_save_history;
|
|
} buffer_t;
|
|
|
|
/**
|
|
* Pointer to current active buffer
|
|
*/
|
|
buffer_t * env;
|
|
|
|
/**
|
|
* Editor modes (like in vim)
|
|
*/
|
|
#define MODE_NORMAL 0
|
|
#define MODE_INSERT 1
|
|
#define MODE_LINE_SELECTION 2
|
|
#define MODE_REPLACE 3
|
|
#define MODE_CHAR_SELECTION 4
|
|
|
|
/**
|
|
* Available buffers
|
|
*/
|
|
int buffers_len;
|
|
int buffers_avail;
|
|
buffer_t ** buffers;
|
|
|
|
/**
|
|
* Create a new buffer
|
|
*/
|
|
buffer_t * buffer_new(void) {
|
|
if (buffers_len == buffers_avail) {
|
|
/* If we are out of buffer space, expand the buffers vector */
|
|
buffers_avail *= 2;
|
|
buffers = realloc(buffers, sizeof(buffer_t *) * buffers_avail);
|
|
}
|
|
|
|
/* Allocate a new buffer */
|
|
buffers[buffers_len] = malloc(sizeof(buffer_t));
|
|
memset(buffers[buffers_len], 0x00, sizeof(buffer_t));
|
|
buffers_len++;
|
|
|
|
return buffers[buffers_len-1];
|
|
}
|
|
|
|
/**
|
|
* Close a buffer
|
|
*/
|
|
buffer_t * buffer_close(buffer_t * buf) {
|
|
int i;
|
|
|
|
/* Locate the buffer in the buffer pointer vector */
|
|
for (i = 0; i < buffers_len; i++) {
|
|
if (buf == buffers[i])
|
|
break;
|
|
}
|
|
|
|
/* Invalid buffer? */
|
|
if (i == buffers_len) {
|
|
return env; /* wtf */
|
|
}
|
|
|
|
/* Remove the buffer from the vector, moving others up */
|
|
if (i != buffers_len - 1) {
|
|
memmove(&buffers[i], &buffers[i+1], sizeof(*buffers) * (buffers_len - i));
|
|
}
|
|
|
|
/* There is one less buffer */
|
|
buffers_len--;
|
|
if (!buffers_len) {
|
|
/* There are no more buffers. */
|
|
return NULL;
|
|
}
|
|
|
|
/* If this was the last buffer, return the previous last buffer */
|
|
if (i == buffers_len) {
|
|
return buffers[buffers_len-1];
|
|
}
|
|
|
|
/* Otherwise return the new last buffer */
|
|
return buffers[i];
|
|
}
|
|
|
|
/**
|
|
* Themes
|
|
*/
|
|
|
|
/* Based on the wombat256 theme for vim */
|
|
void load_colorscheme_wombat(void) {
|
|
COLOR_FG = "5;230";
|
|
COLOR_BG = "5;235";
|
|
COLOR_ALT_FG = "5;244";
|
|
COLOR_ALT_BG = "5;236";
|
|
COLOR_NUMBER_BG = "5;232";
|
|
COLOR_NUMBER_FG = "5;101";
|
|
COLOR_STATUS_FG = "5;230";
|
|
COLOR_STATUS_BG = "5;238";
|
|
COLOR_TABBAR_BG = "5;230";
|
|
COLOR_TAB_BG = "5;248";
|
|
COLOR_KEYWORD = "5;117";
|
|
COLOR_STRING = "5;113";
|
|
COLOR_COMMENT = "5;102;3";
|
|
COLOR_TYPE = "5;185";
|
|
COLOR_PRAGMA = "5;173";
|
|
COLOR_NUMERAL = COLOR_PRAGMA;
|
|
|
|
COLOR_ERROR_FG = "5;15";
|
|
COLOR_ERROR_BG = "5;196";
|
|
COLOR_SEARCH_FG = "5;234";
|
|
COLOR_SEARCH_BG = "5;226";
|
|
|
|
COLOR_SELECTFG = "5;235";
|
|
COLOR_SELECTBG = "5;230";
|
|
|
|
COLOR_RED = "@1";
|
|
COLOR_GREEN = "@2";
|
|
|
|
current_theme = "wombat";
|
|
}
|
|
|
|
/* "City Lights" based on citylights.xyz */
|
|
void load_colorscheme_citylights(void) {
|
|
COLOR_FG = "2;151;178;198";
|
|
COLOR_BG = "2;29;37;44";
|
|
COLOR_ALT_FG = "2;45;55;65";
|
|
COLOR_ALT_BG = "2;33;42;50";
|
|
COLOR_NUMBER_FG = "2;71;89;103";
|
|
COLOR_NUMBER_BG = "2;37;47;56";
|
|
COLOR_STATUS_FG = "2;116;144;166";
|
|
COLOR_STATUS_BG = "2;53;67;78";
|
|
COLOR_TABBAR_BG = "2;37;47;56";
|
|
COLOR_TAB_BG = "2;29;37;44";
|
|
COLOR_KEYWORD = "2;94;196;255";
|
|
COLOR_STRING = "2;83;154;252";
|
|
COLOR_COMMENT = "2;107;133;153;3";
|
|
COLOR_TYPE = "2;139;212;156";
|
|
COLOR_PRAGMA = "2;0;139;148";
|
|
COLOR_NUMERAL = "2;207;118;132";
|
|
|
|
COLOR_ERROR_FG = "5;15";
|
|
COLOR_ERROR_BG = "5;196";
|
|
COLOR_SEARCH_FG = "5;234";
|
|
COLOR_SEARCH_BG = "5;226";
|
|
|
|
COLOR_SELECTFG = "2;29;37;44";
|
|
COLOR_SELECTBG = "2;151;178;198";
|
|
|
|
COLOR_RED = "2;222;53;53";
|
|
COLOR_GREEN = "2;55;167;0";
|
|
|
|
current_theme = "citylights";
|
|
}
|
|
|
|
/* Solarized Dark, popular theme */
|
|
void load_colorscheme_solarized_dark(void) {
|
|
COLOR_FG = "2;147;161;161";
|
|
COLOR_BG = "2;0;43;54";
|
|
COLOR_ALT_FG = "2;147;161;161";
|
|
COLOR_ALT_BG = "2;7;54;66";
|
|
COLOR_NUMBER_FG = "2;131;148;149";
|
|
COLOR_NUMBER_BG = "2;7;54;66";
|
|
COLOR_STATUS_FG = "2;131;148;150";
|
|
COLOR_STATUS_BG = "2;7;54;66";
|
|
COLOR_TABBAR_BG = "2;7;54;66";
|
|
COLOR_TAB_BG = "2;131;148;150";
|
|
COLOR_KEYWORD = "2;133;153;0";
|
|
COLOR_STRING = "2;42;161;152";
|
|
COLOR_COMMENT = "2;101;123;131";
|
|
COLOR_TYPE = "2;181;137;0";
|
|
COLOR_PRAGMA = "2;203;75;22";
|
|
COLOR_NUMERAL = "2;220;50;47";
|
|
|
|
COLOR_ERROR_FG = "5;15";
|
|
COLOR_ERROR_BG = "5;196";
|
|
COLOR_SEARCH_FG = "5;234";
|
|
COLOR_SEARCH_BG = "5;226";
|
|
|
|
COLOR_SELECTFG = "2;0;43;54";
|
|
COLOR_SELECTBG = "2;147;161;161";
|
|
|
|
COLOR_RED = "2;222;53;53";
|
|
COLOR_GREEN = "2;55;167;0";
|
|
|
|
current_theme = "solarized-dark";
|
|
}
|
|
|
|
/* Custom theme */
|
|
void load_colorscheme_sunsmoke(void) {
|
|
COLOR_FG = "2;230;230;230";
|
|
COLOR_BG = "2;31;31;31";
|
|
COLOR_ALT_FG = "2;122;122;122";
|
|
COLOR_ALT_BG = "2;46;43;46";
|
|
COLOR_NUMBER_FG = "2;150;139;57";
|
|
COLOR_NUMBER_BG = "2;0;0;0";
|
|
COLOR_STATUS_FG = "2;230;230;230";
|
|
COLOR_STATUS_BG = "2;71;64;58";
|
|
COLOR_TABBAR_BG = "2;71;64;58";
|
|
COLOR_TAB_BG = "2;71;64;58";
|
|
COLOR_KEYWORD = "2;51;162;230";
|
|
COLOR_STRING = "2;72;176;72";
|
|
COLOR_COMMENT = "2;158;153;129;3";
|
|
COLOR_TYPE = "2;230;206;110";
|
|
COLOR_PRAGMA = "2;194;70;54";
|
|
COLOR_NUMERAL = "2;230;43;127";
|
|
|
|
COLOR_ERROR_FG = "5;15";
|
|
COLOR_ERROR_BG = "5;196";
|
|
COLOR_SEARCH_FG = "5;234";
|
|
COLOR_SEARCH_BG = "5;226";
|
|
|
|
COLOR_SELECTFG = "2;0;43;54";
|
|
COLOR_SELECTBG = "2;147;161;161";
|
|
|
|
COLOR_RED = "2;222;53;53";
|
|
COLOR_GREEN = "2;55;167;0";
|
|
|
|
current_theme = "sunsmoke";
|
|
}
|
|
|
|
/* 16-color theme, default */
|
|
void load_colorscheme_ansi(void) {
|
|
COLOR_FG = global_config.can_bright ? "@17" : "@7";
|
|
COLOR_BG = global_config.can_bright ? "@9" : "@0";
|
|
COLOR_ALT_FG = global_config.can_bright ? "@10" : "@5";
|
|
COLOR_ALT_BG = "@9";
|
|
COLOR_NUMBER_FG = "@3";
|
|
COLOR_NUMBER_BG = "@9";
|
|
COLOR_STATUS_FG = global_config.can_bright ? "@17" : "@7";
|
|
COLOR_STATUS_BG = "@4";
|
|
COLOR_TABBAR_BG = "@4";
|
|
COLOR_TAB_BG = "@4";
|
|
COLOR_KEYWORD = global_config.can_bright ? "@14" : "@4";
|
|
COLOR_STRING = "@2";
|
|
COLOR_COMMENT = global_config.can_bright ? "@10" : "@5";
|
|
COLOR_TYPE = "@3";
|
|
COLOR_PRAGMA = "@1";
|
|
COLOR_NUMERAL = "@1";
|
|
|
|
COLOR_ERROR_FG = global_config.can_bright ? "@17" : "@7";
|
|
COLOR_ERROR_BG = "@1";
|
|
COLOR_SEARCH_FG = "@0";
|
|
COLOR_SEARCH_BG = global_config.can_bright ? "@13" : "@3";
|
|
|
|
COLOR_SELECTBG = global_config.can_bright ? "@17" : "@7";
|
|
COLOR_SELECTFG = "@0";
|
|
|
|
COLOR_RED = "@1";
|
|
COLOR_GREEN = "@2";
|
|
|
|
current_theme = "ansi";
|
|
}
|
|
|
|
struct theme_def {
|
|
const char * name;
|
|
void (*load)(void);
|
|
} themes[] = {
|
|
{"wombat", load_colorscheme_wombat},
|
|
{"citylights", load_colorscheme_citylights},
|
|
{"solarized-dark", load_colorscheme_solarized_dark},
|
|
{"ansi", load_colorscheme_ansi},
|
|
{"sunsmoke", load_colorscheme_sunsmoke},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
|
|
/**
|
|
* Syntax definition for C
|
|
*/
|
|
int syn_c_iskeywordchar(int c) {
|
|
if (isalnum(c)) return 1;
|
|
if (c == '_') return 1;
|
|
return 0;
|
|
}
|
|
|
|
static char * syn_c_keywords[] = {
|
|
"while","if","for","continue","return","break","switch","case","sizeof",
|
|
"struct","union","typedef","do","default","else","goto",
|
|
"alignas","alignof","offsetof",
|
|
/* C++ stuff */
|
|
"public","private","class","using","namespace",
|
|
NULL
|
|
};
|
|
|
|
static char * syn_c_types[] = {
|
|
"static","int","char","short","float","double","void","unsigned","volatile","const",
|
|
"register","long","inline","restrict","enum","auto","extern","bool","complex",
|
|
"uint8_t","uint16_t","uint32_t","uint64_t",
|
|
"int8_t","int16_t","int32_t","int64_t",
|
|
NULL
|
|
};
|
|
|
|
static int syn_c_extended(line_t * line, int i, int c, int last, int * out_left) {
|
|
if (i == 0 && c == '#') {
|
|
*out_left = line->actual+1;
|
|
if (line->text[line->actual-1].codepoint == '\\') {
|
|
return FLAG_PRAGMA | FLAG_CONTINUES;
|
|
}
|
|
return FLAG_PRAGMA;
|
|
}
|
|
|
|
if ((!last || !syn_c_iskeywordchar(last)) && (i < line->actual - 3) &&
|
|
line->text[i].codepoint == 'N' &&
|
|
line->text[i+1].codepoint == 'U' &&
|
|
line->text[i+2].codepoint == 'L' &&
|
|
line->text[i+3].codepoint == 'L' &&
|
|
(i == line->actual - 4 || !syn_c_iskeywordchar(line->text[i+4].codepoint))) {
|
|
*out_left = 3;
|
|
return FLAG_NUMERAL;
|
|
}
|
|
|
|
if ((!last || !syn_c_iskeywordchar(last)) && isdigit(c)) {
|
|
if (c == '0' && i < line->actual - 1 && line->text[i+1].codepoint == 'x') {
|
|
int j = 2;
|
|
for (; i + j < line->actual && isxdigit(line->text[i+j].codepoint); ++j);
|
|
if (i + j < line->actual && syn_c_iskeywordchar(line->text[i+j].codepoint)) {
|
|
return FLAG_NONE;
|
|
}
|
|
*out_left = j - 1;
|
|
return FLAG_NUMERAL;
|
|
} else {
|
|
int j = 1;
|
|
while (i + j < line->actual && isdigit(line->text[i+j].codepoint)) {
|
|
j++;
|
|
}
|
|
if (i + j < line->actual && syn_c_iskeywordchar(line->text[i+j].codepoint)) {
|
|
return FLAG_NONE;
|
|
}
|
|
*out_left = j - 1;
|
|
return FLAG_NUMERAL;
|
|
}
|
|
}
|
|
|
|
if (c == '/') {
|
|
if (i < line->actual - 1 && line->text[i+1].codepoint == '/') {
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_COMMENT;
|
|
}
|
|
|
|
if (i < line->actual - 1 && line->text[i+1].codepoint == '*') {
|
|
int last = 0;
|
|
for (int j = i + 2; j < line->actual; ++j) {
|
|
int c = line->text[j].codepoint;
|
|
if (c == '/' && last == '*') {
|
|
*out_left = j - i;
|
|
return FLAG_COMMENT;
|
|
}
|
|
last = c;
|
|
}
|
|
/* TODO multiline - update next */
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_COMMENT | FLAG_CONTINUES;
|
|
}
|
|
}
|
|
|
|
if (c == '\'') {
|
|
if (i < line->actual - 3 && line->text[i+1].codepoint == '\\' &&
|
|
line->text[i+3].codepoint == '\'') {
|
|
*out_left = 3;
|
|
return FLAG_NUMERAL;
|
|
}
|
|
if (i < line->actual - 2 && line->text[i+2].codepoint == '\'') {
|
|
*out_left = 2;
|
|
return FLAG_NUMERAL;
|
|
}
|
|
}
|
|
|
|
if (c == '"') {
|
|
int last = 0;
|
|
for (int j = i+1; j < line->actual; ++j) {
|
|
int c = line->text[j].codepoint;
|
|
if (last != '\\' && c == '"') {
|
|
*out_left = j - i;
|
|
return FLAG_STRING;
|
|
}
|
|
if (last == '\\' && c == '\\') {
|
|
last = 0;
|
|
}
|
|
last = c;
|
|
}
|
|
*out_left = (line->actual + 1) - i; /* unterminated string */
|
|
return FLAG_STRING;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
char * syn_c_ext[] = {".c",".h",".cpp",".hpp",".c++",".h++",NULL};
|
|
|
|
static int syn_c_finish(line_t * line, int * left, int state) {
|
|
if (state == (FLAG_COMMENT | FLAG_CONTINUES)) {
|
|
int last = 0;
|
|
for (int i = 0; i < line->actual; ++i) {
|
|
if (line->text[i].codepoint == '/' && last == '*') {
|
|
*left = i+2;
|
|
return FLAG_COMMENT;
|
|
}
|
|
last = line->text[i].codepoint;
|
|
}
|
|
return FLAG_COMMENT | FLAG_CONTINUES;
|
|
}
|
|
if (state == (FLAG_PRAGMA | FLAG_CONTINUES)) {
|
|
*left = line->actual + 1;
|
|
if (line->text[line->actual-1].codepoint == '\\') {
|
|
return FLAG_PRAGMA | FLAG_CONTINUES;
|
|
}
|
|
return FLAG_PRAGMA;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Syntax definition for Python
|
|
*/
|
|
static char * syn_py_keywords[] = {
|
|
"class","def","return","del","if","else","elif",
|
|
"for","while","continue","break","assert",
|
|
"as","and","or","except","finally","from",
|
|
"global","import","in","is","lambda","with",
|
|
"nonlocal","not","pass","raise","try","yield",
|
|
NULL
|
|
};
|
|
|
|
static char * syn_py_types[] = {
|
|
"True","False","None",
|
|
"object","set","dict","int","str","bytes",
|
|
NULL
|
|
};
|
|
|
|
static int syn_py_extended(line_t * line, int i, int c, int last, int * out_left) {
|
|
|
|
if (i == 0 && c == 'i') {
|
|
/* Check for import */
|
|
char * import = "import ";
|
|
for (int j = 0; j < line->actual + 1; ++j) {
|
|
if (import[j] == '\0') {
|
|
*out_left = j - 2;
|
|
return FLAG_PRAGMA;
|
|
}
|
|
if (line->text[j].codepoint != import[j]) break;
|
|
}
|
|
}
|
|
|
|
if (c == '#') {
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_COMMENT;
|
|
}
|
|
|
|
if (c == '@') {
|
|
for (int j = i+1; j < line->actual + 1; ++j) {
|
|
if (!syn_c_iskeywordchar(line->text[j].codepoint)) {
|
|
*out_left = j - i - 1;
|
|
return FLAG_PRAGMA;
|
|
}
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_PRAGMA;
|
|
}
|
|
}
|
|
|
|
if ((!last || !syn_c_iskeywordchar(last)) && isdigit(c)) {
|
|
if (c == '0' && i < line->actual - 1 && line->text[i+1].codepoint == 'x') {
|
|
int j = 2;
|
|
for (; i + j < line->actual && isxdigit(line->text[i+j].codepoint); ++j);
|
|
if (i + j < line->actual && syn_c_iskeywordchar(line->text[i+j].codepoint)) {
|
|
return FLAG_NONE;
|
|
}
|
|
*out_left = j - 1;
|
|
return FLAG_NUMERAL;
|
|
} else {
|
|
int j = 1;
|
|
while (i + j < line->actual && isdigit(line->text[i+j].codepoint)) {
|
|
j++;
|
|
}
|
|
if (i + j < line->actual && syn_c_iskeywordchar(line->text[i+j].codepoint)) {
|
|
return FLAG_NONE;
|
|
}
|
|
*out_left = j - 1;
|
|
return FLAG_NUMERAL;
|
|
}
|
|
}
|
|
|
|
if (line->text[i].codepoint == '\'') {
|
|
if (i + 2 < line->actual && line->text[i+1].codepoint == '\'' && line->text[i+2].codepoint == '\'') {
|
|
/* Begin multiline */
|
|
for (int j = i + 3; j < line->actual - 2; ++j) {
|
|
if (line->text[j].codepoint == '\'' &&
|
|
line->text[j+1].codepoint == '\'' &&
|
|
line->text[j+2].codepoint == '\'') {
|
|
*out_left = (j+2) - i;
|
|
return FLAG_STRING;
|
|
}
|
|
}
|
|
return FLAG_STRING | FLAG_CONTINUES;
|
|
}
|
|
|
|
int last = 0;
|
|
for (int j = i+1; j < line->actual; ++j) {
|
|
int c = line->text[j].codepoint;
|
|
if (last != '\\' && c == '\'') {
|
|
*out_left = j - i;
|
|
return FLAG_STRING;
|
|
}
|
|
if (last == '\\' && c == '\\') {
|
|
last = 0;
|
|
}
|
|
last = c;
|
|
}
|
|
*out_left = (line->actual + 1) - i; /* unterminated string */
|
|
return FLAG_STRING;
|
|
}
|
|
|
|
if (line->text[i].codepoint == '"') {
|
|
if (i + 2 < line->actual && line->text[i+1].codepoint == '"' && line->text[i+2].codepoint == '"') {
|
|
/* Begin multiline */
|
|
for (int j = i + 3; j < line->actual - 2; ++j) {
|
|
if (line->text[j].codepoint == '"' &&
|
|
line->text[j+1].codepoint == '"' &&
|
|
line->text[j+2].codepoint == '"') {
|
|
*out_left = (j+2) - i;
|
|
return FLAG_STRING;
|
|
}
|
|
}
|
|
return FLAG_STRING2 | FLAG_CONTINUES;
|
|
}
|
|
|
|
int last = 0;
|
|
for (int j = i+1; j < line->actual; ++j) {
|
|
int c = line->text[j].codepoint;
|
|
if (last != '\\' && c == '"') {
|
|
*out_left = j - i;
|
|
return FLAG_STRING;
|
|
}
|
|
if (last == '\\' && c == '\\') {
|
|
last = 0;
|
|
}
|
|
last = c;
|
|
}
|
|
*out_left = (line->actual + 1) - i; /* unterminated string */
|
|
return FLAG_STRING;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int syn_py_finish(line_t * line, int * left, int state) {
|
|
/* TODO support multiline quotes */
|
|
if (state == (FLAG_STRING | FLAG_CONTINUES)) {
|
|
for (int j = 0; j < line->actual - 2; ++j) {
|
|
if (line->text[j].codepoint == '\'' &&
|
|
line->text[j+1].codepoint == '\'' &&
|
|
line->text[j+2].codepoint == '\'') {
|
|
*left = (j+3);
|
|
return FLAG_STRING;
|
|
}
|
|
}
|
|
return FLAG_STRING | FLAG_CONTINUES;
|
|
}
|
|
if (state == (FLAG_STRING2 | FLAG_CONTINUES)) {
|
|
for (int j = 0; j < line->actual - 2; ++j) {
|
|
if (line->text[j].codepoint == '"' &&
|
|
line->text[j+1].codepoint == '"' &&
|
|
line->text[j+2].codepoint == '"') {
|
|
*left = (j+3);
|
|
return FLAG_STRING2;
|
|
}
|
|
}
|
|
return FLAG_STRING2 | FLAG_CONTINUES;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
char * syn_py_ext[] = {".py",NULL};
|
|
|
|
/**
|
|
* Syntax definition for ToaruOS shell
|
|
*/
|
|
static char * syn_sh_keywords[] = {
|
|
"cd","exit","export","help","history","if",
|
|
"empty?","equals?","return","export-cmd",
|
|
"source","exec","not","while","then","else",
|
|
NULL,
|
|
};
|
|
|
|
static int variable_char(uint8_t c) {
|
|
if (c >= 'A' && c <= 'Z') return 1;
|
|
if (c >= 'a' && c <= 'z') return 1;
|
|
if (c >= '0' && c <= '9') return 1;
|
|
if (c == '_') return 1;
|
|
if (c == '?') return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int syn_sh_extended(line_t * line, int i, int c, int last, int * out_left) {
|
|
(void)last;
|
|
|
|
if (c == '#' && last != '\\') {
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_COMMENT;
|
|
}
|
|
|
|
if (line->text[i].codepoint == '\'' && last != '\\') {
|
|
int last = 0;
|
|
for (int j = i+1; j < line->actual + 1; ++j) {
|
|
int c = line->text[j].codepoint;
|
|
if (last != '\\' && c == '\'') {
|
|
*out_left = j - i;
|
|
return FLAG_STRING;
|
|
}
|
|
if (last == '\\' && c == '\\') {
|
|
last = 0;
|
|
}
|
|
last = c;
|
|
}
|
|
*out_left = (line->actual + 1) - i; /* unterminated string */
|
|
return FLAG_STRING;
|
|
}
|
|
|
|
if (line->text[i].codepoint == '$' && last != '\\') {
|
|
if (i < line->actual - 1 && line->text[i+1].codepoint == '{') {
|
|
int j = i + 2;
|
|
for (; j < line->actual+1; ++j) {
|
|
if (line->text[j].codepoint == '}') break;
|
|
}
|
|
*out_left = (j - i);
|
|
return FLAG_NUMERAL;
|
|
}
|
|
int j = i + 1;
|
|
for (; j < line->actual + 1; ++j) {
|
|
if (!variable_char(line->text[j].codepoint)) break;
|
|
}
|
|
*out_left = (j - i) - 1;
|
|
return FLAG_NUMERAL;
|
|
}
|
|
|
|
if (line->text[i].codepoint == '"' && last != '\\') {
|
|
int last = 0;
|
|
for (int j = i+1; j < line->actual + 1; ++j) {
|
|
int c = line->text[j].codepoint;
|
|
if (last != '\\' && c == '"') {
|
|
*out_left = j - i;
|
|
return FLAG_STRING;
|
|
}
|
|
if (last == '\\' && c == '\\') {
|
|
last = 0;
|
|
}
|
|
last = c;
|
|
}
|
|
*out_left = (line->actual + 1) - i; /* unterminated string */
|
|
return FLAG_STRING;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int syn_sh_iskeywordchar(int c) {
|
|
if (isalnum(c)) return 1;
|
|
if (c == '-') return 1;
|
|
if (c == '_') return 1;
|
|
if (c == '?') return 1;
|
|
return 0;
|
|
}
|
|
|
|
static char * syn_sh_ext[] = {".sh",".eshrc",".esh",NULL};
|
|
|
|
static char * syn_make_ext[] = {"Makefile","makefile","GNUmakefile",".mak",NULL};
|
|
|
|
static char * syn_make_commands[] = {
|
|
"define","endef","undefine","ifdef","ifndef","ifeq","ifneq","else","endif",
|
|
"include","sinclude","override","export","unexport","private","vpath",
|
|
"-include",
|
|
NULL
|
|
};
|
|
|
|
static char * syn_make_functions[] = {
|
|
"subst","patsubst","findstring","filter","filter-out",
|
|
"sort","word","words","wordlist","firstword","lastword",
|
|
"dir","notdir","suffix","basename","addsuffix","addprefix",
|
|
"join","wildcard","realpath","abspath","error","warning",
|
|
"shell","origin","flavor","foreach","if","or","and",
|
|
"call","eval","file","value",
|
|
NULL
|
|
};
|
|
|
|
static int syn_make_extended(line_t * line, int i, int c, int last, int * out_left) {
|
|
(void)last;
|
|
|
|
if (c == '#') {
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_COMMENT;
|
|
}
|
|
|
|
if (c == '\t') {
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_NUMERAL;
|
|
}
|
|
|
|
if (i == 0) {
|
|
int j = 0;
|
|
for (; j < line->actual; ++j) {
|
|
/* Handle leading spaces */
|
|
if (line->text[j].codepoint != ' ') break;
|
|
}
|
|
for (int s = 0; syn_make_commands[s]; ++s) {
|
|
int d = 0;
|
|
while (j + d < line->actual && line->text[j+d].codepoint == syn_make_commands[s][d]) d++;
|
|
if (syn_make_commands[s][d] == '\0') {
|
|
*out_left = j+d;
|
|
return FLAG_PRAGMA;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (last == '(' && i > 1) {
|
|
if (line->text[i-2].codepoint == '$') {
|
|
int j = i;
|
|
for (int s = 0; syn_make_functions[s]; ++s) {
|
|
int d = 0;
|
|
while (j + d < line->actual && line->text[j+d].codepoint == syn_make_functions[s][d]) d++;
|
|
if (syn_make_functions[s][d] == '\0' && (j + d == line->actual
|
|
|| line->text[j+d].codepoint == ')' || line->text[j+d].codepoint == ' ')) {
|
|
*out_left = d;
|
|
return FLAG_KEYWORD;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (i == 0) {
|
|
int j = 0;
|
|
for (; j < line->actual; ++j) {
|
|
if (line->text[j].codepoint == '=') {
|
|
*out_left = j;
|
|
return FLAG_TYPE;
|
|
}
|
|
if (line->text[j].codepoint == ':') {
|
|
*out_left = j;
|
|
return FLAG_TYPE;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
return FLAG_NONE;
|
|
}
|
|
|
|
static char * syn_bimrc_keywords[] = {
|
|
"theme",
|
|
"padding",
|
|
NULL,
|
|
};
|
|
|
|
static int syn_bimrc_extended(line_t * line, int i, int c, int last, int * out_left) {
|
|
(void)last;
|
|
if (i == 0 && c == '#') {
|
|
*out_left = line->actual+1;
|
|
return FLAG_COMMENT;
|
|
}
|
|
return FLAG_NONE;
|
|
}
|
|
|
|
static char * syn_bimrc_ext[] = {".bimrc",NULL};
|
|
|
|
static int syn_gitcommit_extended(line_t * line, int i, int c, int last, int * out_left) {
|
|
(void)last;
|
|
|
|
if (c == '#') {
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_COMMENT;
|
|
}
|
|
|
|
return FLAG_NONE;
|
|
}
|
|
|
|
static char * syn_gitcommit_ext[] = {"COMMIT_EDITMSG",NULL};
|
|
|
|
static char * syn_gitrebase_commands[] = {
|
|
"p ","r ","e ","s ","f ","x "," d",
|
|
"pick ","reword ","edit ","squash ","fixup ",
|
|
"exec ","drop ",
|
|
NULL
|
|
};
|
|
|
|
static int syn_gitrebase_extended(line_t * line, int i, int c, int last, int * out_left) {
|
|
(void)last;
|
|
|
|
if (c == '#') {
|
|
*out_left = (line->actual + 1) - i;
|
|
return FLAG_COMMENT;
|
|
}
|
|
|
|
if (i == 0) {
|
|
int j = i;
|
|
for (int s = 0; syn_gitrebase_commands[s]; ++s) {
|
|
int d = 0;
|
|
while (j + d < line->actual && line->text[j+d].codepoint == syn_gitrebase_commands[s][d]) d++;
|
|
if (syn_gitrebase_commands[s][d] == '\0') {
|
|
*out_left = j+d-1;
|
|
return FLAG_KEYWORD;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (i > 0 && (line->text[i-1].flags & FLAG_KEYWORD)) {
|
|
int j = i;
|
|
while (isxdigit(line->text[j].codepoint)) {
|
|
j++;
|
|
}
|
|
*out_left = j-i-1;
|
|
return FLAG_NUMERAL;
|
|
}
|
|
|
|
return FLAG_NONE;
|
|
}
|
|
|
|
static char * syn_gitrebase_ext[] = {"git-rebase-todo",NULL};
|
|
|
|
static int syn_diff_extended(line_t * line, int i, int c, int last, int * out_left) {
|
|
(void)last;
|
|
|
|
if (i == 0) {
|
|
if (c == '+') {
|
|
*out_left = (line->actual + 1);
|
|
return FLAG_DIFFPLUS;
|
|
} else if (c == '-') {
|
|
*out_left = (line->actual + 1);
|
|
return FLAG_DIFFMINUS;
|
|
} else if (c == '@') {
|
|
*out_left = (line->actual + 1);
|
|
return FLAG_TYPE;
|
|
} else if (c != ' ') {
|
|
*out_left = (line->actual + 1);
|
|
return FLAG_KEYWORD;
|
|
}
|
|
}
|
|
|
|
return FLAG_NONE;
|
|
}
|
|
|
|
static char * syn_diff_ext[] = {".diff",".patch",NULL};
|
|
|
|
/**
|
|
* Syntax hilighting definition database
|
|
*/
|
|
struct syntax_definition {
|
|
char * name;
|
|
char ** ext;
|
|
char ** keywords;
|
|
char ** types;
|
|
int (*extended)(line_t *, int, int, int, int *);
|
|
int (*iskwchar)(int);
|
|
int (*finishml)(line_t *, int *, int);
|
|
} syntaxes[] = {
|
|
{"c",syn_c_ext,syn_c_keywords,syn_c_types,syn_c_extended,syn_c_iskeywordchar,syn_c_finish},
|
|
{"python",syn_py_ext,syn_py_keywords,syn_py_types,syn_py_extended,syn_c_iskeywordchar,syn_py_finish},
|
|
{"esh",syn_sh_ext,syn_sh_keywords,NULL,syn_sh_extended,syn_sh_iskeywordchar,NULL},
|
|
{"make",syn_make_ext,NULL,NULL,syn_make_extended,NULL,NULL},
|
|
{"bimrc",syn_bimrc_ext,syn_bimrc_keywords,NULL,syn_bimrc_extended,syn_c_iskeywordchar,NULL},
|
|
{"gitcommit",syn_gitcommit_ext,NULL,NULL,syn_gitcommit_extended,NULL,NULL},
|
|
{"gitrebase",syn_gitrebase_ext,NULL,NULL,syn_gitrebase_extended,NULL,NULL},
|
|
{"diff",syn_diff_ext,NULL,NULL,syn_diff_extended,NULL,NULL},
|
|
{NULL}
|
|
};
|
|
|
|
/**
|
|
* Checks whether the character pointed to by `c` is the start of a match for
|
|
* keyword or type name `str`.
|
|
*/
|
|
int check_line(line_t * line, int c, char * str, int last) {
|
|
if (env->syntax->iskwchar(last)) return 0;
|
|
for (int i = c; i < line->actual; ++i, ++str) {
|
|
if (*str == '\0' && !env->syntax->iskwchar(line->text[i].codepoint)) return 1;
|
|
if (line->text[i].codepoint == *str) continue;
|
|
return 0;
|
|
}
|
|
if (*str == '\0') return 1;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Calculate syntax hilighting for the given line.
|
|
*/
|
|
void recalculate_syntax(line_t * line, int offset) {
|
|
if (!env->syntax) {
|
|
for (int i = 0; i < line->actual; ++i) {
|
|
line->text[i].flags = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Start from the line's stored in initial state */
|
|
int state = line->istate;
|
|
int left = 0;
|
|
int last = 0;
|
|
|
|
if (state) {
|
|
/*
|
|
* If we are already highlighting coming in, then we need to check
|
|
* for a finishing sequence for the curent state.
|
|
*/
|
|
state = env->syntax->finishml(line,&left,state);
|
|
|
|
if (state & FLAG_CONTINUES) {
|
|
/* The finish check said that this multiline state continues. */
|
|
for (int i = 0; i < line->actual; i++) {
|
|
/* Set the entire line to draw with this state */
|
|
line->text[i].flags = state;
|
|
}
|
|
|
|
/* Recalculate later lines if needed */
|
|
goto _multiline;
|
|
}
|
|
}
|
|
|
|
for (int i = 0; i < line->actual; last = line->text[i++].codepoint) {
|
|
if (!left) state = 0;
|
|
|
|
if (state) {
|
|
/* Currently hilighting, have `left` characters remaining with this state */
|
|
left--;
|
|
line->text[i].flags = state;
|
|
|
|
if (!left) {
|
|
/* Done hilighting this state, go back to parsing on next character */
|
|
state = 0;
|
|
}
|
|
|
|
/* If we are hilighting something, don't parse */
|
|
continue;
|
|
}
|
|
|
|
int c = line->text[i].codepoint;
|
|
line->text[i].flags = FLAG_NONE;
|
|
|
|
/* Language-specific syntax hilighting */
|
|
if (env->syntax->extended) {
|
|
int s = env->syntax->extended(line,i,c,last,&left);
|
|
if (s) {
|
|
state = s;
|
|
if (state & FLAG_CONTINUES) {
|
|
/* A multiline state was returned. Fill the rest of the line */
|
|
for (; i < line->actual; i++) {
|
|
line->text[i].flags = state;
|
|
}
|
|
/* And recalculate later lines if needed */
|
|
goto _multiline;
|
|
}
|
|
goto _continue;
|
|
}
|
|
}
|
|
|
|
/* Keywords */
|
|
if (env->syntax->keywords) {
|
|
for (char ** kw = env->syntax->keywords; *kw; kw++) {
|
|
int c = check_line(line, i, *kw, last);
|
|
if (c == 1) {
|
|
left = strlen(*kw)-1;
|
|
state = FLAG_KEYWORD;
|
|
goto _continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Type names */
|
|
if (env->syntax->types) {
|
|
for (char ** kw = env->syntax->types; *kw; kw++) {
|
|
int c = check_line(line, i, *kw, last);
|
|
if (c == 1) {
|
|
left = strlen(*kw)-1;
|
|
state = FLAG_TYPE;
|
|
goto _continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
_continue:
|
|
line->text[i].flags = state;
|
|
}
|
|
|
|
state = 0;
|
|
|
|
_multiline:
|
|
/*
|
|
* If the next line's initial state does not match the state we ended on,
|
|
* then it needs to be recalculated (and redraw). This may lead to multiple
|
|
* recursive calls until a match is found.
|
|
*/
|
|
if (offset + 1 < env->line_count && env->lines[offset+1]->istate != state) {
|
|
/* Set the next line's initial state to our ending state */
|
|
env->lines[offset+1]->istate = state;
|
|
|
|
/* Recursively recalculate */
|
|
recalculate_syntax(env->lines[offset+1],offset+1);
|
|
|
|
/*
|
|
* Determine if this is an on-screen line so we can redraw it;
|
|
* this ends up drawing from bottom to top when multiple lines
|
|
* need to be redrawn by a recursive call.
|
|
*/
|
|
if (offset+1 >= env->offset && offset+1 < env->offset + global_config.term_height - global_config.bottom_size - 1) {
|
|
redraw_line(offset + 1 - env->offset,offset+1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Recalculate tab widths.
|
|
*/
|
|
void recalculate_tabs(line_t * line) {
|
|
if (env->loading) return;
|
|
|
|
int j = 0;
|
|
for (int i = 0; i < line->actual; ++i) {
|
|
if (line->text[i].codepoint == '\t') {
|
|
line->text[i].display_width = env->tabstop - (j % env->tabstop);
|
|
}
|
|
j += line->text[i].display_width;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* TODO:
|
|
*
|
|
* The line editing functions should probably take a buffer_t *
|
|
* so that they can act on buffers other than the active one.
|
|
*/
|
|
|
|
void recursive_history_free(history_t * root) {
|
|
if (!root->next) return;
|
|
|
|
history_t * n = root->next;
|
|
recursive_history_free(n);
|
|
|
|
switch (n->type) {
|
|
case HISTORY_REPLACE_LINE:
|
|
free(n->remove_replace_line.contents);
|
|
/* fall-through */
|
|
case HISTORY_REMOVE_LINE:
|
|
free(n->remove_replace_line.old_contents);
|
|
break;
|
|
default:
|
|
/* Nothing extra to free */
|
|
break;
|
|
}
|
|
|
|
free(n);
|
|
root->next = NULL;
|
|
}
|
|
|
|
#define HIST_APPEND(e) do { \
|
|
if (env->history) { \
|
|
e->previous = env->history; \
|
|
recursive_history_free(env->history); \
|
|
env->history->next = e; \
|
|
e->next = NULL; \
|
|
} \
|
|
env->history = e; \
|
|
} while (0)
|
|
|
|
/**
|
|
* Mark a point where a complete set of actions has ended.
|
|
*/
|
|
void set_history_break(void) {
|
|
if (!global_config.history_enabled) return;
|
|
|
|
if (env->history->type != HISTORY_BREAK && env->history->type != HISTORY_SENTINEL) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_BREAK;
|
|
HIST_APPEND(e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Insert a character into an existing line.
|
|
*/
|
|
line_t * line_insert(line_t * line, char_t c, int offset, int lineno) {
|
|
|
|
if (!env->loading && global_config.history_enabled) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_INSERT;
|
|
e->insert_delete_replace.lineno = lineno;
|
|
e->insert_delete_replace.offset = offset;
|
|
e->insert_delete_replace.codepoint = c.codepoint;
|
|
HIST_APPEND(e);
|
|
}
|
|
|
|
/* If there is not enough space... */
|
|
if (line->actual == line->available) {
|
|
/* Expand the line buffer */
|
|
line->available *= 2;
|
|
line = realloc(line, sizeof(line_t) + sizeof(char_t) * line->available);
|
|
}
|
|
|
|
/* If this was not the last character, then shift remaining characters forward. */
|
|
if (offset < line->actual) {
|
|
memmove(&line->text[offset+1], &line->text[offset], sizeof(char_t) * (line->actual - offset));
|
|
}
|
|
|
|
/* Insert the new character */
|
|
line->text[offset] = c;
|
|
|
|
/* There is one new character in the line */
|
|
line->actual += 1;
|
|
|
|
if (!env->loading) {
|
|
recalculate_tabs(line);
|
|
recalculate_syntax(line, lineno);
|
|
}
|
|
|
|
return line;
|
|
}
|
|
|
|
/**
|
|
* Delete a character from a line
|
|
*/
|
|
void line_delete(line_t * line, int offset, int lineno) {
|
|
|
|
/* Can't delete character before start of line. */
|
|
if (offset == 0) return;
|
|
|
|
if (!env->loading && global_config.history_enabled) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_DELETE;
|
|
e->insert_delete_replace.lineno = lineno;
|
|
e->insert_delete_replace.offset = offset;
|
|
e->insert_delete_replace.old_codepoint = line->text[offset-1].codepoint;
|
|
HIST_APPEND(e);
|
|
}
|
|
|
|
/* If this isn't the last character, we need to move all subsequent characters backwards */
|
|
if (offset < line->actual) {
|
|
memmove(&line->text[offset-1], &line->text[offset], sizeof(char_t) * (line->actual - offset));
|
|
}
|
|
|
|
/* The line is one character shorter */
|
|
line->actual -= 1;
|
|
|
|
recalculate_tabs(line);
|
|
recalculate_syntax(line, lineno);
|
|
}
|
|
|
|
/**
|
|
* Replace a character in a line
|
|
*/
|
|
void line_replace(line_t * line, char_t _c, int offset, int lineno) {
|
|
|
|
if (!env->loading && global_config.history_enabled) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_REPLACE;
|
|
e->insert_delete_replace.lineno = lineno;
|
|
e->insert_delete_replace.offset = offset;
|
|
e->insert_delete_replace.codepoint = _c.codepoint;
|
|
e->insert_delete_replace.old_codepoint = line->text[offset].codepoint;
|
|
HIST_APPEND(e);
|
|
}
|
|
|
|
line->text[offset] = _c;
|
|
|
|
if (!env->loading) {
|
|
recalculate_tabs(line);
|
|
recalculate_syntax(line, lineno);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove a line from the active buffer
|
|
*/
|
|
line_t ** remove_line(line_t ** lines, int offset) {
|
|
|
|
/* If there is only one line, clear it instead of removing it. */
|
|
if (env->line_count == 1) {
|
|
while (lines[offset]->actual > 0) {
|
|
line_delete(lines[offset], lines[offset]->actual, offset);
|
|
}
|
|
return lines;
|
|
}
|
|
|
|
if (!env->loading && global_config.history_enabled) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_REMOVE_LINE;
|
|
e->remove_replace_line.lineno = offset;
|
|
e->remove_replace_line.old_contents = malloc(sizeof(line_t) + sizeof(char_t) * lines[offset]->available);
|
|
memcpy(e->remove_replace_line.old_contents, lines[offset], sizeof(line_t) + sizeof(char_t) * lines[offset]->available);
|
|
HIST_APPEND(e);
|
|
}
|
|
|
|
/* Otherwise, free the data used by the line */
|
|
free(lines[offset]);
|
|
|
|
/* Move other lines up */
|
|
if (offset < env->line_count) {
|
|
memmove(&lines[offset], &lines[offset+1], sizeof(line_t *) * (env->line_count - (offset - 1)));
|
|
lines[env->line_count-1] = NULL;
|
|
}
|
|
|
|
/* There is one less line */
|
|
env->line_count -= 1;
|
|
return lines;
|
|
}
|
|
|
|
/**
|
|
* Add a new line to the active buffer.
|
|
*/
|
|
line_t ** add_line(line_t ** lines, int offset) {
|
|
|
|
/* Invalid offset? */
|
|
if (offset > env->line_count) return lines;
|
|
|
|
if (!env->loading && global_config.history_enabled) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_ADD_LINE;
|
|
e->add_merge_split_lines.lineno = offset;
|
|
HIST_APPEND(e);
|
|
}
|
|
|
|
/* Not enough space */
|
|
if (env->line_count == env->line_avail) {
|
|
/* Allocate more space */
|
|
env->line_avail *= 2;
|
|
lines = realloc(lines, sizeof(line_t *) * env->line_avail);
|
|
}
|
|
|
|
/* If this isn't the last line, move other lines down */
|
|
if (offset < env->line_count) {
|
|
memmove(&lines[offset+1], &lines[offset], sizeof(line_t *) * (env->line_count - offset));
|
|
}
|
|
|
|
/* Allocate the new line */
|
|
lines[offset] = malloc(sizeof(line_t) + sizeof(char_t) * 32);
|
|
lines[offset]->available = 32;
|
|
lines[offset]->actual = 0;
|
|
lines[offset]->istate = 0;
|
|
|
|
/* There is one new line */
|
|
env->line_count += 1;
|
|
env->lines = lines;
|
|
|
|
if (offset > 0 && !env->loading) {
|
|
recalculate_syntax(lines[offset-1],offset-1);
|
|
}
|
|
return lines;
|
|
}
|
|
|
|
/**
|
|
* Replace a line with data from another line (used by paste to paste yanked lines)
|
|
*/
|
|
void replace_line(line_t ** lines, int offset, line_t * replacement) {
|
|
|
|
if (!env->loading && global_config.history_enabled) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_REPLACE_LINE;
|
|
e->remove_replace_line.lineno = offset;
|
|
e->remove_replace_line.old_contents = malloc(sizeof(line_t) + sizeof(char_t) * lines[offset]->available);
|
|
memcpy(e->remove_replace_line.old_contents, lines[offset], sizeof(line_t) + sizeof(char_t) * lines[offset]->available);
|
|
e->remove_replace_line.contents = malloc(sizeof(line_t) + sizeof(char_t) * replacement->available);
|
|
memcpy(e->remove_replace_line.contents, replacement, sizeof(line_t) + sizeof(char_t) * replacement->available);
|
|
HIST_APPEND(e);
|
|
}
|
|
|
|
if (lines[offset]->available < replacement->actual) {
|
|
lines[offset] = realloc(lines[offset], sizeof(line_t) + sizeof(char_t) * replacement->available);
|
|
lines[offset]->available = replacement->available;
|
|
}
|
|
lines[offset]->actual = replacement->actual;
|
|
memcpy(&lines[offset]->text, &replacement->text, sizeof(char_t) * replacement->actual);
|
|
|
|
if (!env->loading) {
|
|
recalculate_syntax(lines[offset],offset);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Merge two consecutive lines.
|
|
* lineb is the offset of the second line.
|
|
*/
|
|
line_t ** merge_lines(line_t ** lines, int lineb) {
|
|
|
|
/* linea is the line immediately before lineb */
|
|
int linea = lineb - 1;
|
|
|
|
if (!env->loading && global_config.history_enabled) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_MERGE_LINES;
|
|
e->add_merge_split_lines.lineno = lineb;
|
|
e->add_merge_split_lines.split = env->lines[linea]->actual;
|
|
HIST_APPEND(e);
|
|
}
|
|
|
|
/* If there isn't enough space in linea hold both... */
|
|
while (lines[linea]->available < lines[linea]->actual + lines[lineb]->actual) {
|
|
/* ... allocate more space until it fits */
|
|
lines[linea]->available *= 2;
|
|
/* XXX why not just do this once after calculating appropriate size */
|
|
lines[linea] = realloc(lines[linea], sizeof(line_t) + sizeof(char_t) * lines[linea]->available);
|
|
}
|
|
|
|
/* Copy the second line into the first line */
|
|
memcpy(&lines[linea]->text[lines[linea]->actual], &lines[lineb]->text, sizeof(char_t) * lines[lineb]->actual);
|
|
|
|
/* The first line is now longer */
|
|
lines[linea]->actual = lines[linea]->actual + lines[lineb]->actual;
|
|
|
|
if (!env->loading) {
|
|
recalculate_tabs(lines[linea]);
|
|
recalculate_syntax(lines[linea], linea);
|
|
}
|
|
|
|
/* Remove the second line */
|
|
free(lines[lineb]);
|
|
|
|
/* Move other lines up */
|
|
if (lineb < env->line_count) {
|
|
memmove(&lines[lineb], &lines[lineb+1], sizeof(line_t *) * (env->line_count - (lineb - 1)));
|
|
lines[env->line_count-1] = NULL;
|
|
}
|
|
|
|
/* There is one less line */
|
|
env->line_count -= 1;
|
|
return lines;
|
|
}
|
|
|
|
/**
|
|
* Split a line into two lines at the given column
|
|
*/
|
|
line_t ** split_line(line_t ** lines, int line, int split) {
|
|
|
|
/* If we're trying to split from the start, just add a new blank line before */
|
|
if (split == 0) {
|
|
return add_line(lines, line);
|
|
}
|
|
|
|
if (!env->loading && global_config.history_enabled) {
|
|
history_t * e = malloc(sizeof(history_t));
|
|
e->type = HISTORY_SPLIT_LINE;
|
|
e->add_merge_split_lines.lineno = line;
|
|
e->add_merge_split_lines.split = split;
|
|
HIST_APPEND(e);
|
|
}
|
|
|
|
/* Allocate more space as needed */
|
|
if (env->line_count == env->line_avail) {
|
|
env->line_avail *= 2;
|
|
lines = realloc(lines, sizeof(line_t *) * env->line_avail);
|
|
}
|
|
|
|
/* Shift later lines down */
|
|
if (line < env->line_count) {
|
|
memmove(&lines[line+2], &lines[line+1], sizeof(line_t *) * (env->line_count - line));
|
|
}
|
|
|
|
/* I have no idea what this is doing */
|
|
int remaining = lines[line]->actual - split;
|
|
|
|
int v = remaining;
|
|
v--;
|
|
v |= v >> 1;
|
|
v |= v >> 2;
|
|
v |= v >> 4;
|
|
v |= v >> 8;
|
|
v |= v >> 16;
|
|
v++;
|
|
|
|
/* Allocate space for the new line */
|
|
lines[line+1] = malloc(sizeof(line_t) + sizeof(char_t) * v);
|
|
lines[line+1]->available = v;
|
|
lines[line+1]->actual = remaining;
|
|
lines[line+1]->istate = 0;
|
|
|
|
/* Move the data from the old line into the new line */
|
|
memmove(lines[line+1]->text, &lines[line]->text[split], sizeof(char_t) * remaining);
|
|
lines[line]->actual = split;
|
|
|
|
if (!env->loading) {
|
|
recalculate_tabs(lines[line]);
|
|
recalculate_tabs(lines[line+1]);
|
|
recalculate_syntax(lines[line], line);
|
|
recalculate_syntax(lines[line+1], line+1);
|
|
}
|
|
|
|
/* There is one new line */
|
|
env->line_count += 1;
|
|
|
|
/* We may have reallocated lines */
|
|
return lines;
|
|
}
|
|
|
|
/**
|
|
* Add indentation from the previous (temporally) line
|
|
*/
|
|
void add_indent(int new_line, int old_line) {
|
|
if (env->indent) {
|
|
int changed = 0;
|
|
for (int i = 0; i < env->lines[old_line]->actual; ++i) {
|
|
if (env->lines[old_line]->text[i].codepoint == ' ' ||
|
|
env->lines[old_line]->text[i].codepoint == '\t') {
|
|
env->lines[new_line] = line_insert(env->lines[new_line],env->lines[old_line]->text[i],i,new_line);
|
|
env->col_no++;
|
|
changed = 1;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (old_line < new_line &&
|
|
(env->lines[old_line]->text[env->lines[old_line]->actual-1].codepoint == '{' ||
|
|
env->lines[old_line]->text[env->lines[old_line]->actual-1].codepoint == ':')) {
|
|
if (env->tabs) {
|
|
char_t c;
|
|
c.codepoint = '\t';
|
|
c.display_width = env->tabstop;
|
|
env->lines[new_line] = line_insert(env->lines[new_line], c, env->lines[new_line]->actual-1, new_line);
|
|
env->col_no++;
|
|
changed = 1;
|
|
} else {
|
|
for (int j = 0; j < env->tabstop; ++j) {
|
|
char_t c;
|
|
c.codepoint = ' ';
|
|
c.display_width = 1;
|
|
c.flags = FLAG_SELECT;
|
|
env->lines[new_line] = line_insert(env->lines[new_line], c, env->lines[new_line]->actual-1, new_line);
|
|
env->col_no++;
|
|
}
|
|
changed = 1;
|
|
}
|
|
}
|
|
if (changed) {
|
|
recalculate_syntax(env->lines[new_line],new_line);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Initialize a buffer with default values
|
|
*/
|
|
void setup_buffer(buffer_t * env) {
|
|
/* If this buffer was already initialized, clear out its line data */
|
|
if (env->lines) {
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
free(env->lines[i]);
|
|
}
|
|
free(env->lines);
|
|
}
|
|
|
|
/* Default state parameters */
|
|
env->line_no = 1; /* Default cursor position */
|
|
env->col_no = 1;
|
|
env->line_count = 1; /* Buffers always have at least one line */
|
|
env->modified = 0;
|
|
env->readonly = 0;
|
|
env->offset = 0;
|
|
env->line_avail = 8; /* Default line buffer capacity */
|
|
env->tabs = 1; /* Tabs by default */
|
|
env->tabstop = 4; /* Tab stop width */
|
|
env->indent = 1; /* Auto-indent by default */
|
|
env->history = malloc(sizeof(struct history));
|
|
memset(env->history, 0, sizeof(struct history));
|
|
env->last_save_history = env->history;
|
|
|
|
/* Allocate line buffer */
|
|
env->lines = malloc(sizeof(line_t *) * env->line_avail);
|
|
|
|
/* Initialize the first line */
|
|
env->lines[0] = malloc(sizeof(line_t) + sizeof(char_t) * 32);
|
|
env->lines[0]->available = 32;
|
|
env->lines[0]->actual = 0;
|
|
env->lines[0]->istate = 0;
|
|
}
|
|
|
|
/**
|
|
* Toggle buffered / unbuffered modes
|
|
*/
|
|
struct termios old;
|
|
void get_initial_termios(void) {
|
|
tcgetattr(STDOUT_FILENO, &old);
|
|
}
|
|
|
|
void set_unbuffered(void) {
|
|
struct termios new = old;
|
|
new.c_lflag &= (~ICANON & ~ECHO);
|
|
tcsetattr(STDOUT_FILENO, TCSAFLUSH, &new);
|
|
}
|
|
|
|
void set_buffered(void) {
|
|
tcsetattr(STDOUT_FILENO, TCSAFLUSH, &old);
|
|
}
|
|
|
|
/**
|
|
* Convert codepoint to utf-8 string
|
|
*/
|
|
int to_eight(uint32_t codepoint, char * out) {
|
|
memset(out, 0x00, 7);
|
|
|
|
if (codepoint < 0x0080) {
|
|
out[0] = (char)codepoint;
|
|
} else if (codepoint < 0x0800) {
|
|
out[0] = 0xC0 | (codepoint >> 6);
|
|
out[1] = 0x80 | (codepoint & 0x3F);
|
|
} else if (codepoint < 0x10000) {
|
|
out[0] = 0xE0 | (codepoint >> 12);
|
|
out[1] = 0x80 | ((codepoint >> 6) & 0x3F);
|
|
out[2] = 0x80 | (codepoint & 0x3F);
|
|
} else if (codepoint < 0x200000) {
|
|
out[0] = 0xF0 | (codepoint >> 18);
|
|
out[1] = 0x80 | ((codepoint >> 12) & 0x3F);
|
|
out[2] = 0x80 | ((codepoint >> 6) & 0x3F);
|
|
out[3] = 0x80 | ((codepoint) & 0x3F);
|
|
} else if (codepoint < 0x4000000) {
|
|
out[0] = 0xF8 | (codepoint >> 24);
|
|
out[1] = 0x80 | (codepoint >> 18);
|
|
out[2] = 0x80 | ((codepoint >> 12) & 0x3F);
|
|
out[3] = 0x80 | ((codepoint >> 6) & 0x3F);
|
|
out[4] = 0x80 | ((codepoint) & 0x3F);
|
|
} else {
|
|
out[0] = 0xF8 | (codepoint >> 30);
|
|
out[1] = 0x80 | ((codepoint >> 24) & 0x3F);
|
|
out[2] = 0x80 | ((codepoint >> 18) & 0x3F);
|
|
out[3] = 0x80 | ((codepoint >> 12) & 0x3F);
|
|
out[4] = 0x80 | ((codepoint >> 6) & 0x3F);
|
|
out[5] = 0x80 | ((codepoint) & 0x3F);
|
|
}
|
|
|
|
return strlen(out);
|
|
}
|
|
|
|
/**
|
|
* Get the presentation width of a codepoint
|
|
*/
|
|
int codepoint_width(wchar_t codepoint) {
|
|
if (codepoint == '\t') {
|
|
return 1; /* Recalculate later */
|
|
}
|
|
if (codepoint < 32) {
|
|
/* We render these as ^@ */
|
|
return 2;
|
|
}
|
|
if (codepoint == 0x7F) {
|
|
/* Renders as ^? */
|
|
return 2;
|
|
}
|
|
if (codepoint > 0x7f && codepoint < 0xa0) {
|
|
/* Upper control bytes <xx> */
|
|
return 4;
|
|
}
|
|
if (codepoint == 0xa0) {
|
|
/* Non-breaking space _ */
|
|
return 1;
|
|
}
|
|
/* Skip wcwidth for anything under 256 */
|
|
if (codepoint > 256) {
|
|
if (global_config.can_unicode) {
|
|
/* Higher codepoints may be wider (eg. Japanese) */
|
|
int out = wcwidth(codepoint);
|
|
if (out >= 1) return out;
|
|
}
|
|
/* Invalid character, render as [U+ABCD] or [U+ABCDEF] */
|
|
return (codepoint < 0x10000) ? 8 : 10;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Move the terminal cursor
|
|
*/
|
|
void place_cursor(int x, int y) {
|
|
printf("\033[%d;%dH", y, x);
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Set text colors
|
|
*
|
|
* Normally, text colors are just strings, but if they
|
|
* start with @ they will be parsed as integers
|
|
* representing one of the 16 standard colors, suitable
|
|
* for terminals without support for the 256- or 24-bit
|
|
* color modes.
|
|
*/
|
|
void set_colors(const char * fg, const char * bg) {
|
|
printf("\033[22;23;");
|
|
if (*bg == '@') {
|
|
int _bg = atoi(bg+1);
|
|
if (_bg < 10) {
|
|
printf("4%d;", _bg);
|
|
} else {
|
|
printf("10%d;", _bg-10);
|
|
}
|
|
} else {
|
|
printf("48;%s;", bg);
|
|
}
|
|
if (*fg == '@') {
|
|
int _fg = atoi(fg+1);
|
|
if (_fg < 10) {
|
|
printf("3%dm", _fg);
|
|
} else {
|
|
printf("9%dm", _fg-10);
|
|
}
|
|
} else {
|
|
printf("38;%sm", fg);
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Set just the foreground color
|
|
*
|
|
* (See set_colors above)
|
|
*/
|
|
void set_fg_color(const char * fg) {
|
|
printf("\033[22;23;");
|
|
if (*fg == '@') {
|
|
int _fg = atoi(fg+1);
|
|
if (_fg < 10) {
|
|
printf("3%dm", _fg);
|
|
} else {
|
|
printf("9%dm", _fg-10);
|
|
}
|
|
} else {
|
|
printf("38;%sm", fg);
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Clear the rest of this line
|
|
*/
|
|
void clear_to_end(void) {
|
|
if (global_config.can_bce) {
|
|
printf("\033[K");
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* For terminals without bce,
|
|
* prepaint the whole line, so we don't have to track
|
|
* where the cursor is for everything. Inefficient,
|
|
* but effective.
|
|
*/
|
|
void paint_line(const char * bg) {
|
|
if (!global_config.can_bce) {
|
|
set_colors(COLOR_FG, bg);
|
|
for (int i = 0; i < global_config.term_width; ++i) {
|
|
printf(" ");
|
|
}
|
|
printf("\r");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Enable bold text display
|
|
*/
|
|
void set_bold(void) {
|
|
printf("\033[1m");
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Enable underlined text display
|
|
*/
|
|
void set_underline(void) {
|
|
printf("\033[4m");
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Reset text display attributes
|
|
*/
|
|
void reset(void) {
|
|
printf("\033[0m");
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Clear the entire screen
|
|
*/
|
|
void clear_screen(void) {
|
|
printf("\033[H\033[2J");
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Hide the cursor
|
|
*/
|
|
void hide_cursor(void) {
|
|
if (global_config.can_hideshow) {
|
|
printf("\033[?25l");
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
/*
|
|
* Show the cursor
|
|
*/
|
|
void show_cursor(void) {
|
|
if (global_config.can_hideshow) {
|
|
printf("\033[?25h");
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Request mouse events
|
|
*/
|
|
void mouse_enable(void) {
|
|
if (global_config.can_mouse) {
|
|
printf("\033[?1000h");
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Stop mouse events
|
|
*/
|
|
void mouse_disable(void) {
|
|
if (global_config.can_mouse) {
|
|
printf("\033[?1000l");
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Shift the screen up one line
|
|
*/
|
|
void shift_up(void) {
|
|
printf("\033[1S");
|
|
}
|
|
|
|
/**
|
|
* Shift the screen down one line.
|
|
*/
|
|
void shift_down(void) {
|
|
printf("\033[1T");
|
|
}
|
|
|
|
/**
|
|
* Switch to the alternate terminal screen.
|
|
*/
|
|
void set_alternate_screen(void) {
|
|
if (global_config.can_altscreen) {
|
|
printf("\033[?1049h");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Restore the standard terminal screen.
|
|
*/
|
|
void unset_alternate_screen(void) {
|
|
if (global_config.can_altscreen) {
|
|
printf("\033[?1049l");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Redaw the tabbar, with a tab for each buffer.
|
|
*
|
|
* The active buffer is highlighted.
|
|
*/
|
|
void redraw_tabbar(void) {
|
|
/* Hide cursor while rendering UI */
|
|
hide_cursor();
|
|
|
|
/* Move to upper left */
|
|
place_cursor(1,1);
|
|
|
|
paint_line(COLOR_TABBAR_BG);
|
|
|
|
/* For each buffer... */
|
|
for (int i = 0; i < buffers_len; i++) {
|
|
buffer_t * _env = buffers[i];
|
|
|
|
if (_env == env) {
|
|
/* If this is the active buffer, hilight it */
|
|
reset();
|
|
set_colors(COLOR_FG, COLOR_BG);
|
|
set_bold();
|
|
} else {
|
|
/* Otherwise use default tab color */
|
|
reset();
|
|
set_colors(COLOR_FG, COLOR_TAB_BG);
|
|
set_underline();
|
|
}
|
|
|
|
/* If this buffer is modified, indicate that with a prepended + */
|
|
if (_env->modified) {
|
|
printf(" +");
|
|
}
|
|
|
|
/* Print the filename */
|
|
if (_env->file_name) {
|
|
printf(" %s ", _env->file_name);
|
|
} else {
|
|
printf(" [No Name] ");
|
|
}
|
|
}
|
|
|
|
/* Reset bold/underline */
|
|
reset();
|
|
/* Fill the rest of the tab bar */
|
|
set_colors(COLOR_FG, COLOR_TABBAR_BG);
|
|
clear_to_end();
|
|
}
|
|
|
|
/**
|
|
* Braindead log10 implementation for the line numbers
|
|
*/
|
|
int log_base_10(unsigned int v) {
|
|
int r = (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
|
|
(v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
|
|
(v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* Render a line of text
|
|
*
|
|
* This handles rendering the actual text content. A full line of text
|
|
* also includes a line number and some padding.
|
|
*
|
|
* width: width of the text display region (term width - line number width)
|
|
* offset: how many cells into the line to start rendering at
|
|
*/
|
|
void render_line(line_t * line, int width, int offset) {
|
|
int i = 0; /* Offset in char_t line data entries */
|
|
int j = 0; /* Offset in terminal cells */
|
|
|
|
const char * last_color = NULL;
|
|
int was_selecting = 0;
|
|
|
|
/* Set default text colors */
|
|
set_colors(COLOR_FG, COLOR_BG);
|
|
|
|
/*
|
|
* When we are rendering in the middle of a wide character,
|
|
* we render -'s to fill the remaining amount of the
|
|
* charater's width
|
|
*/
|
|
int remainder = 0;
|
|
|
|
/* For each character in the line ... */
|
|
while (i < line->actual) {
|
|
|
|
/* If there is remaining text... */
|
|
if (remainder) {
|
|
|
|
/* If we should be drawing by now... */
|
|
if (j >= offset) {
|
|
/* Fill remainder with -'s */
|
|
set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("-");
|
|
set_colors(COLOR_FG, COLOR_BG);
|
|
}
|
|
|
|
/* One less remaining width cell to fill */
|
|
remainder--;
|
|
|
|
/* Terminal offset moves forward */
|
|
j++;
|
|
|
|
/*
|
|
* If this was the last remaining character, move to
|
|
* the next codepoint in the line
|
|
*/
|
|
if (remainder == 0) {
|
|
i++;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Get the next character to draw */
|
|
char_t c = line->text[i];
|
|
|
|
/* If we should be drawing by now... */
|
|
if (j >= offset) {
|
|
|
|
/* If this character is going to fall off the edge of the screen... */
|
|
if (j - offset + c.display_width >= width) {
|
|
/* We draw this with special colors so it isn't ambiguous */
|
|
set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
|
|
/* If it's wide, draw ---> as needed */
|
|
while (j - offset < width - 1) {
|
|
printf("-");
|
|
j++;
|
|
}
|
|
|
|
/* End the line with a > to show it overflows */
|
|
printf(">");
|
|
set_colors(COLOR_FG, COLOR_BG);
|
|
return;
|
|
}
|
|
|
|
/* Syntax hilighting */
|
|
const char * color = flag_to_color(c.flags);
|
|
if (c.flags == FLAG_SELECT) {
|
|
set_colors(COLOR_SELECTFG, COLOR_SELECTBG);
|
|
was_selecting = 1;
|
|
} else {
|
|
if (was_selecting) {
|
|
set_colors(color, COLOR_BG);
|
|
last_color = color;
|
|
} else if (!last_color || strcmp(color, last_color)) {
|
|
set_fg_color(color);
|
|
last_color = color;
|
|
}
|
|
}
|
|
|
|
#define _set_colors(fg,bg) if (c.flags != FLAG_SELECT) { set_colors(fg,bg); }
|
|
|
|
/* Render special characters */
|
|
if (c.codepoint == '\t') {
|
|
_set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
if (global_config.can_unicode) {
|
|
printf("»");
|
|
for (int i = 1; i < c.display_width; ++i) {
|
|
printf("·");
|
|
}
|
|
} else {
|
|
printf(">");
|
|
for (int i = 1; i < c.display_width; ++i) {
|
|
printf("-");
|
|
}
|
|
}
|
|
_set_colors(last_color ? last_color : COLOR_FG, COLOR_BG);
|
|
} else if (c.codepoint < 32) {
|
|
/* Codepoints under 32 to get converted to ^@ escapes */
|
|
_set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("^%c", '@' + c.codepoint);
|
|
_set_colors(last_color ? last_color : COLOR_FG, COLOR_BG);
|
|
} else if (c.codepoint == 0x7f) {
|
|
_set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("^?");
|
|
_set_colors(last_color ? last_color : COLOR_FG, COLOR_BG);
|
|
} else if (c.codepoint > 0x7f && c.codepoint < 0xa0) {
|
|
_set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("<%2x>", c.codepoint);
|
|
_set_colors(last_color ? last_color : COLOR_FG, COLOR_BG);
|
|
} else if (c.codepoint == 0xa0) {
|
|
_set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("_");
|
|
_set_colors(last_color ? last_color : COLOR_FG, COLOR_BG);
|
|
} else if (c.display_width == 8) {
|
|
_set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("[U+%04x]", c.codepoint);
|
|
_set_colors(last_color ? last_color : COLOR_FG, COLOR_BG);
|
|
} else if (c.display_width == 10) {
|
|
_set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("[U+%06x]", c.codepoint);
|
|
_set_colors(last_color ? last_color : COLOR_FG, COLOR_BG);
|
|
} else if (c.codepoint == ' ' && i == line->actual - 1) {
|
|
/* Special case: space at end of line */
|
|
_set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("·");
|
|
_set_colors(COLOR_FG, COLOR_BG);
|
|
} else {
|
|
/* Normal characters get output */
|
|
char tmp[7]; /* Max six bytes, use 7 to ensure last is always nil */
|
|
to_eight(c.codepoint, tmp);
|
|
printf("%s", tmp);
|
|
}
|
|
|
|
/* Advance the terminal cell offset by the render width of this character */
|
|
j += c.display_width;
|
|
|
|
/* Advance to the next character */
|
|
i++;
|
|
} else if (c.display_width > 1) {
|
|
/*
|
|
* If this is a wide character but we aren't ready to render yet,
|
|
* we may need to draw some filler text for the remainder of its
|
|
* width to ensure we don't jump around when horizontally scrolling
|
|
* past wide characters.
|
|
*/
|
|
remainder = c.display_width - 1;
|
|
j++;
|
|
} else {
|
|
/* Regular character, not ready to draw, advance without doing anything */
|
|
j++;
|
|
i++;
|
|
}
|
|
}
|
|
|
|
if (env->mode == MODE_CHAR_SELECTION) {
|
|
set_colors(COLOR_FG, COLOR_BG);
|
|
}
|
|
|
|
if (!global_config.can_bce) {
|
|
/* Paint the rest of the line */
|
|
for (; j < global_config.term_width; ++j) {
|
|
printf(" ");
|
|
}
|
|
}
|
|
|
|
/* Clear the rest of the line */
|
|
clear_to_end();
|
|
}
|
|
|
|
/**
|
|
* Get the width of the line number region
|
|
*/
|
|
int num_width(void) {
|
|
int w = log_base_10(env->line_count) + 1;
|
|
if (w < 2) return 2;
|
|
return w;
|
|
}
|
|
|
|
/**
|
|
* Draw the gutter and line numbers.
|
|
*/
|
|
void draw_line_number(int x) {
|
|
/* Draw the line number */
|
|
set_colors(COLOR_NUMBER_FG, COLOR_NUMBER_BG);
|
|
int num_size = num_width();
|
|
for (int y = 0; y < num_size - log_base_10(x + 1); ++y) {
|
|
printf(" ");
|
|
}
|
|
printf("%d%c", x + 1, (x+1 == env->line_no && env->coffset > 0) ? '<' : ' ');
|
|
}
|
|
|
|
/**
|
|
* Redraw line.
|
|
*
|
|
* This draws the line number as well as the actual text.
|
|
* j = screen-relative line offset.
|
|
*/
|
|
void redraw_line(int j, int x) {
|
|
if (env->loading) return;
|
|
/* Hide cursor when drawing */
|
|
hide_cursor();
|
|
|
|
/* Move cursor to upper left most cell of this line */
|
|
place_cursor(1,2 + j);
|
|
|
|
/* Draw a gutter on the left.
|
|
* TODO: The gutter can be used to show single-character
|
|
* line annotations, such as collapse state, or
|
|
* whether a search result was found on this line.
|
|
*/
|
|
set_colors(COLOR_NUMBER_FG, COLOR_ALT_FG);
|
|
printf(" ");
|
|
|
|
draw_line_number(x);
|
|
|
|
/*
|
|
* Draw the line text
|
|
* If this is the active line, the current character cell offset should be used.
|
|
* (Non-active lines are not shifted and always render from the start of the line)
|
|
*/
|
|
render_line(env->lines[x], global_config.term_width - 3 - num_width(), (x + 1 == env->line_no) ? env->coffset : 0);
|
|
}
|
|
|
|
/**
|
|
* Draw a ~ line where there is no buffer text.
|
|
*/
|
|
void draw_excess_line(int j) {
|
|
place_cursor(1,2 + j);
|
|
paint_line(COLOR_ALT_BG);
|
|
set_colors(COLOR_ALT_FG, COLOR_ALT_BG);
|
|
printf("~");
|
|
clear_to_end();
|
|
}
|
|
|
|
/**
|
|
* Redraw the entire text area
|
|
*/
|
|
void redraw_text(void) {
|
|
/* Hide cursor while rendering */
|
|
hide_cursor();
|
|
|
|
/* Figure out the available size of the text region */
|
|
int l = global_config.term_height - global_config.bottom_size - 1;
|
|
int j = 0;
|
|
|
|
/* Draw each line */
|
|
for (int x = env->offset; j < l && x < env->line_count; x++) {
|
|
redraw_line(j,x);
|
|
j++;
|
|
}
|
|
|
|
/* Draw the rest of the text region as ~ lines */
|
|
for (; j < l; ++j) {
|
|
draw_excess_line(j);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Draw the status bar
|
|
*
|
|
* The status bar shows the name of the file, whether it has modifications,
|
|
* and (in the future) what syntax highlighting mode is enabled.
|
|
*
|
|
* The right side of the tatus bar shows the line number and column.
|
|
*/
|
|
void redraw_statusbar(void) {
|
|
/* Hide cursor while rendering */
|
|
hide_cursor();
|
|
|
|
/* Move cursor to the status bar line (second from bottom */
|
|
place_cursor(1, global_config.term_height - 1);
|
|
|
|
/* Set background colors for status line */
|
|
paint_line(COLOR_STATUS_BG);
|
|
set_colors(COLOR_STATUS_FG, COLOR_STATUS_BG);
|
|
|
|
/* Print the file name */
|
|
if (env->file_name) {
|
|
printf("%s", env->file_name);
|
|
} else {
|
|
printf("[No Name]");
|
|
}
|
|
|
|
printf(" ");
|
|
|
|
if (env->syntax) {
|
|
printf("[%s]", env->syntax->name);
|
|
}
|
|
|
|
/* Print file status indicators */
|
|
if (env->modified) {
|
|
printf("[+]");
|
|
}
|
|
|
|
if (env->readonly) {
|
|
printf("[ro]");
|
|
}
|
|
|
|
printf(" ");
|
|
|
|
if (env->tabs) {
|
|
printf("[tabs]");
|
|
} else {
|
|
printf("[spaces=%d]", env->tabstop);
|
|
}
|
|
|
|
if (global_config.yanks) {
|
|
printf("[y:%ld]", global_config.yank_count);
|
|
}
|
|
|
|
if (env->indent) {
|
|
printf("[indent]");
|
|
}
|
|
|
|
/* Clear the rest of the status bar */
|
|
clear_to_end();
|
|
|
|
/* Pre-render the right hand side of the status bar */
|
|
char right_hand[1024];
|
|
snprintf(right_hand, 1024, "Line %d/%d Col: %d ", env->line_no, env->line_count, env->col_no);
|
|
|
|
/* Move the cursor appropriately to draw it */
|
|
place_cursor(global_config.term_width - strlen(right_hand), global_config.term_height - 1);
|
|
/* TODO: What if we're localized and this has wide chars? */
|
|
printf("%s",right_hand);
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Draw the command line
|
|
*
|
|
* The command line either has input from the user (:quit, :!make, etc.)
|
|
* or shows the INSERT (or VISUAL in the future) mode name.
|
|
*/
|
|
void redraw_commandline(void) {
|
|
/* Hide cursor while rendering */
|
|
hide_cursor();
|
|
|
|
/* Move cursor to the last line */
|
|
place_cursor(1, global_config.term_height);
|
|
|
|
/* Set background color */
|
|
paint_line(COLOR_BG);
|
|
set_colors(COLOR_FG, COLOR_BG);
|
|
|
|
/* If we are in an edit mode, note that. */
|
|
if (env->mode == MODE_INSERT) {
|
|
set_bold();
|
|
printf("-- INSERT --");
|
|
clear_to_end();
|
|
reset();
|
|
} else if (env->mode == MODE_LINE_SELECTION) {
|
|
set_bold();
|
|
printf("-- LINE SELECTION --");
|
|
clear_to_end();
|
|
reset();
|
|
} else if (env->mode == MODE_REPLACE) {
|
|
set_bold();
|
|
printf("-- REPLACE --");
|
|
clear_to_end();
|
|
reset();
|
|
} else if (env->mode == MODE_CHAR_SELECTION) {
|
|
set_bold();
|
|
printf("-- CHAR SELECTION --");
|
|
clear_to_end();
|
|
reset();
|
|
} else {
|
|
clear_to_end();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Draw a message on the command line.
|
|
*/
|
|
void render_commandline_message(char * message, ...) {
|
|
/* varargs setup */
|
|
va_list args;
|
|
va_start(args, message);
|
|
char buf[1024];
|
|
|
|
/* Process format string */
|
|
vsnprintf(buf, 1024, message, args);
|
|
va_end(args);
|
|
|
|
/* Hide cursor while rendering */
|
|
hide_cursor();
|
|
|
|
/* Move cursor to the last line */
|
|
place_cursor(1, global_config.term_height);
|
|
|
|
/* Set background color */
|
|
paint_line(COLOR_BG);
|
|
set_colors(COLOR_FG, COLOR_BG);
|
|
|
|
printf("%s", buf);
|
|
|
|
/* Clear the rest of the status bar */
|
|
clear_to_end();
|
|
}
|
|
|
|
/**
|
|
* Draw all screen elements
|
|
*/
|
|
void redraw_all(void) {
|
|
redraw_tabbar();
|
|
redraw_text();
|
|
redraw_statusbar();
|
|
redraw_commandline();
|
|
}
|
|
|
|
/**
|
|
* Update the terminal title bar
|
|
*/
|
|
void update_title(void) {
|
|
if (!global_config.can_title) return;
|
|
|
|
char cwd[1024] = {'/',0};
|
|
getcwd(cwd, 1024);
|
|
|
|
for (int i = 1; i < 3; ++i) {
|
|
printf("\033]%d;%s%s (%s) - BIM\007", i, env->file_name ? env->file_name : "[No Name]", env->modified ? " +" : "", cwd);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Mark this buffer as modified and
|
|
* redraw the status and tabbar if needed.
|
|
*/
|
|
void set_modified(void) {
|
|
/* If it was already marked modified, no need to do anything */
|
|
if (env->modified) return;
|
|
|
|
/* Mark as modified */
|
|
env->modified = 1;
|
|
|
|
/* Redraw some things */
|
|
update_title();
|
|
redraw_tabbar();
|
|
redraw_statusbar();
|
|
}
|
|
|
|
/**
|
|
* Draw a message on the status line
|
|
*/
|
|
void render_status_message(char * message, ...) {
|
|
/* varargs setup */
|
|
va_list args;
|
|
va_start(args, message);
|
|
char buf[1024];
|
|
|
|
/* Process format string */
|
|
vsnprintf(buf, 1024, message, args);
|
|
va_end(args);
|
|
|
|
/* Hide cursor while rendering */
|
|
hide_cursor();
|
|
|
|
/* Move cursor to the status bar line (second from bottom */
|
|
place_cursor(1, global_config.term_height - 1);
|
|
|
|
/* Set background colors for status line */
|
|
paint_line(COLOR_STATUS_BG);
|
|
set_colors(COLOR_STATUS_FG, COLOR_STATUS_BG);
|
|
|
|
printf("%s", buf);
|
|
|
|
/* Clear the rest of the status bar */
|
|
clear_to_end();
|
|
}
|
|
|
|
/**
|
|
* Draw an errormessage to the command line.
|
|
*/
|
|
void render_error(char * message, ...) {
|
|
/* varargs setup */
|
|
va_list args;
|
|
va_start(args, message);
|
|
char buf[1024];
|
|
|
|
/* Process format string */
|
|
vsnprintf(buf, 1024, message, args);
|
|
va_end(args);
|
|
|
|
/* Hide cursor while rendering */
|
|
hide_cursor();
|
|
|
|
/* Move cursor to the command line */
|
|
place_cursor(1, global_config.term_height);
|
|
|
|
/* Set appropriate error message colors */
|
|
set_colors(COLOR_ERROR_FG, COLOR_ERROR_BG);
|
|
|
|
/* Draw the message */
|
|
printf("%s", buf);
|
|
fflush(stdout);
|
|
}
|
|
|
|
/**
|
|
* Move the cursor to the appropriate location based
|
|
* on where it is in the text region.
|
|
*
|
|
* This does some additional math to set the text
|
|
* region horizontal offset.
|
|
*/
|
|
void place_cursor_actual(void) {
|
|
|
|
/* Invalid positions */
|
|
if (env->line_no < 1) env->line_no = 1;
|
|
if (env->col_no < 1) env->col_no = 1;
|
|
|
|
/* Account for the left hand gutter */
|
|
int num_size = num_width() + 3;
|
|
int x = num_size + 1 - env->coffset;
|
|
|
|
/* Determine where the cursor is physically */
|
|
for (int i = 0; i < env->col_no - 1; ++i) {
|
|
char_t * c = &env->lines[env->line_no-1]->text[i];
|
|
x += c->display_width;
|
|
}
|
|
|
|
/* y is a bit easier to calculate */
|
|
int y = env->line_no - env->offset + 1;
|
|
|
|
int needs_redraw = 0;
|
|
|
|
while (y < 2 + global_config.cursor_padding && env->offset > 0) {
|
|
y++;
|
|
env->offset--;
|
|
needs_redraw = 1;
|
|
}
|
|
|
|
while (y > global_config.term_height - global_config.bottom_size - global_config.cursor_padding) {
|
|
y--;
|
|
env->offset++;
|
|
needs_redraw = 1;
|
|
}
|
|
|
|
if (needs_redraw) {
|
|
redraw_text();
|
|
redraw_tabbar();
|
|
redraw_statusbar();
|
|
redraw_commandline();
|
|
}
|
|
|
|
/* If the cursor has gone off screen to the right... */
|
|
if (x > global_config.term_width - 1) {
|
|
/* Adjust the offset appropriately to scroll horizontally */
|
|
int diff = x - (global_config.term_width - 1);
|
|
env->coffset += diff;
|
|
x -= diff;
|
|
redraw_text();
|
|
}
|
|
|
|
/* Same for scrolling horizontally to the left */
|
|
if (x < num_size + 1) {
|
|
int diff = (num_size + 1) - x;
|
|
env->coffset -= diff;
|
|
x += diff;
|
|
redraw_text();
|
|
}
|
|
|
|
/* Move the actual terminal cursor */
|
|
place_cursor(x,y);
|
|
|
|
/* Show the cursor */
|
|
show_cursor();
|
|
}
|
|
|
|
/**
|
|
* Update screen size
|
|
*/
|
|
void update_screen_size(void) {
|
|
struct winsize w;
|
|
ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
|
|
global_config.term_width = w.ws_col;
|
|
global_config.term_height = w.ws_row;
|
|
}
|
|
|
|
/**
|
|
* Handle terminal size changes
|
|
*/
|
|
void SIGWINCH_handler(int sig) {
|
|
(void)sig;
|
|
update_screen_size();
|
|
redraw_all();
|
|
|
|
signal(SIGWINCH, SIGWINCH_handler);
|
|
}
|
|
|
|
/**
|
|
* Handle suspend
|
|
*/
|
|
void SIGTSTP_handler(int sig) {
|
|
(void)sig;
|
|
mouse_disable();
|
|
set_buffered();
|
|
reset();
|
|
clear_screen();
|
|
show_cursor();
|
|
unset_alternate_screen();
|
|
fflush(stdout);
|
|
|
|
signal(SIGTSTP, SIG_DFL);
|
|
raise(SIGTSTP);
|
|
}
|
|
|
|
void SIGCONT_handler(int sig) {
|
|
(void)sig;
|
|
set_alternate_screen();
|
|
set_unbuffered();
|
|
mouse_enable();
|
|
redraw_all();
|
|
signal(SIGCONT, SIGCONT_handler);
|
|
signal(SIGTSTP, SIGTSTP_handler);
|
|
}
|
|
|
|
/**
|
|
* Move the cursor to a specific line.
|
|
*/
|
|
void goto_line(int line) {
|
|
|
|
/* Respect file bounds */
|
|
if (line < 1) line = 1;
|
|
if (line > env->line_count) line = env->line_count;
|
|
|
|
/* Move the cursor / text region offsets */
|
|
env->coffset = 0;
|
|
env->offset = line - 1;
|
|
env->line_no = line;
|
|
env->col_no = 1;
|
|
redraw_all();
|
|
}
|
|
|
|
|
|
/**
|
|
* UTF-8 parser state
|
|
*/
|
|
static uint32_t codepoint_r;
|
|
static uint32_t state = 0;
|
|
|
|
#define UTF8_ACCEPT 0
|
|
#define UTF8_REJECT 1
|
|
|
|
static inline uint32_t decode(uint32_t* state, uint32_t* codep, uint32_t byte) {
|
|
static int state_table[32] = {
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xxxxxxx */
|
|
1,1,1,1,1,1,1,1, /* 10xxxxxx */
|
|
2,2,2,2, /* 110xxxxx */
|
|
3,3, /* 1110xxxx */
|
|
4, /* 11110xxx */
|
|
1 /* 11111xxx */
|
|
};
|
|
|
|
static int mask_bytes[32] = {
|
|
0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,
|
|
0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x1F,0x1F,0x1F,0x1F,
|
|
0x0F,0x0F,
|
|
0x07,
|
|
0x00
|
|
};
|
|
|
|
static int next[5] = {
|
|
0,
|
|
1,
|
|
0,
|
|
2,
|
|
3
|
|
};
|
|
|
|
if (*state == UTF8_ACCEPT) {
|
|
*codep = byte & mask_bytes[byte >> 3];
|
|
*state = state_table[byte >> 3];
|
|
} else if (*state > 0) {
|
|
*codep = (byte & 0x3F) | (*codep << 6);
|
|
*state = next[*state];
|
|
}
|
|
return *state;
|
|
}
|
|
|
|
/**
|
|
* Processs (part of) a file and add it to a buffer.
|
|
*/
|
|
void add_buffer(uint8_t * buf, int size) {
|
|
for (int i = 0; i < size; ++i) {
|
|
if (!decode(&state, &codepoint_r, buf[i])) {
|
|
uint32_t c = codepoint_r;
|
|
if (c == '\n') {
|
|
env->lines = add_line(env->lines, env->line_no);
|
|
env->col_no = 1;
|
|
env->line_no += 1;
|
|
} else {
|
|
char_t _c;
|
|
_c.codepoint = (uint32_t)c;
|
|
_c.flags = 0;
|
|
_c.display_width = codepoint_width((wchar_t)c);
|
|
line_t * line = env->lines[env->line_no - 1];
|
|
line_t * nline = line_insert(line, _c, env->col_no - 1, env->line_no-1);
|
|
if (line != nline) {
|
|
env->lines[env->line_no - 1] = nline;
|
|
}
|
|
env->col_no += 1;
|
|
}
|
|
} else if (state == UTF8_REJECT) {
|
|
state = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
struct syntax_definition * match_syntax(char * file) {
|
|
for (struct syntax_definition * s = syntaxes; s->name; ++s) {
|
|
for (char ** ext = s->ext; *ext; ++ext) {
|
|
int i = strlen(file);
|
|
int j = strlen(*ext);
|
|
|
|
do {
|
|
if (file[i] != (*ext)[j]) break;
|
|
if (j == 0) return s;
|
|
if (i == 0) break;
|
|
i--;
|
|
j--;
|
|
} while (1);
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Create a new buffer from a file.
|
|
*/
|
|
void open_file(char * file) {
|
|
env = buffer_new();
|
|
env->loading = 1;
|
|
|
|
setup_buffer(env);
|
|
|
|
FILE * f;
|
|
|
|
if (!strcmp(file,"-")) {
|
|
/**
|
|
* Read file from stdin. stderr provides terminal input.
|
|
*/
|
|
f = stdin;
|
|
global_config.tty_in = STDERR_FILENO;
|
|
env->modified = 1;
|
|
} else {
|
|
f = fopen(file, "r");
|
|
env->file_name = strdup(file);
|
|
}
|
|
|
|
if (!f) {
|
|
if (global_config.hilight_on_open) {
|
|
env->syntax = match_syntax(file);
|
|
}
|
|
env->loading = 0;
|
|
return;
|
|
}
|
|
|
|
uint8_t buf[BLOCK_SIZE];
|
|
|
|
state = 0;
|
|
|
|
while (!feof(f) && !ferror(f)) {
|
|
size_t r = fread(buf, 1, BLOCK_SIZE, f);
|
|
add_buffer(buf, r);
|
|
}
|
|
|
|
if (ferror(f)) {
|
|
env->loading = 0;
|
|
return;
|
|
}
|
|
|
|
if (env->line_no && env->lines[env->line_no-1] && env->lines[env->line_no-1]->actual == 0) {
|
|
/* Remove blank line from end */
|
|
remove_line(env->lines, env->line_no-1);
|
|
}
|
|
|
|
if (global_config.hilight_on_open) {
|
|
env->syntax = match_syntax(file);
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
}
|
|
|
|
/* Try to automatically figure out tabs vs. spaces */
|
|
int tabs = 0, spaces = 0;
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
if (env->lines[i]->actual > 1) { /* Make sure line has at least some text on it */
|
|
if (env->lines[i]->text[0].codepoint == '\t') tabs++;
|
|
if (env->lines[i]->text[0].codepoint == ' ' &&
|
|
env->lines[i]->text[1].codepoint == ' ') /* Ignore spaces at the start of asterisky C comments */
|
|
spaces++;
|
|
}
|
|
}
|
|
if (spaces > tabs) {
|
|
env->tabs = 0;
|
|
}
|
|
|
|
/* TODO figure out tabstop for spaces? */
|
|
|
|
env->loading = 0;
|
|
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_tabs(env->lines[i]);
|
|
}
|
|
|
|
fclose(f);
|
|
}
|
|
|
|
/**
|
|
* Clean up the terminal and exit the editor.
|
|
*/
|
|
void quit(void) {
|
|
mouse_disable();
|
|
set_buffered();
|
|
reset();
|
|
clear_screen();
|
|
show_cursor();
|
|
unset_alternate_screen();
|
|
exit(0);
|
|
}
|
|
|
|
/**
|
|
* Try to quit, but don't continue if there are
|
|
* modified buffers open.
|
|
*/
|
|
void try_quit(void) {
|
|
for (int i = 0; i < buffers_len; i++ ) {
|
|
buffer_t * _env = buffers[i];
|
|
if (_env->modified) {
|
|
if (_env->file_name) {
|
|
render_error("Modifications made to file `%s` in tab %d. Aborting.", _env->file_name, i+1);
|
|
} else {
|
|
render_error("Unsaved new file in tab %d. Aborting.", i+1);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
quit();
|
|
}
|
|
|
|
/**
|
|
* Switch to the previous buffer
|
|
*/
|
|
void previous_tab(void) {
|
|
buffer_t * last = NULL;
|
|
for (int i = 0; i < buffers_len; i++) {
|
|
buffer_t * _env = buffers[i];
|
|
if (_env == env) {
|
|
if (last) {
|
|
/* Wrap around */
|
|
env = last;
|
|
redraw_all();
|
|
return;
|
|
} else {
|
|
env = buffers[buffers_len-1];
|
|
redraw_all();
|
|
return;
|
|
}
|
|
}
|
|
last = _env;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Switch to the next buffer
|
|
*/
|
|
void next_tab(void) {
|
|
for (int i = 0; i < buffers_len; i++) {
|
|
buffer_t * _env = buffers[i];
|
|
if (_env == env) {
|
|
if (i != buffers_len - 1) {
|
|
env = buffers[i+1];
|
|
redraw_all();
|
|
return;
|
|
} else {
|
|
/* Wrap around */
|
|
env = buffers[0];
|
|
redraw_all();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Write active buffer to file
|
|
*/
|
|
void write_file(char * file) {
|
|
if (!file) {
|
|
render_error("Need a file to write to.");
|
|
return;
|
|
}
|
|
|
|
FILE * f = fopen(file, "w+");
|
|
|
|
if (!f) {
|
|
render_error("Failed to open file for writing.");
|
|
return;
|
|
}
|
|
|
|
/* Go through each line and convert it back to UTF-8 */
|
|
int i, j;
|
|
for (i = 0; i < env->line_count; ++i) {
|
|
line_t * line = env->lines[i];
|
|
for (j = 0; j < line->actual; j++) {
|
|
char_t c = line->text[j];
|
|
if (c.codepoint == 0) {
|
|
char buf[1] = {0};
|
|
fwrite(buf, 1, 1, f);
|
|
} else {
|
|
char tmp[8] = {0};
|
|
int i = to_eight(c.codepoint, tmp);
|
|
fwrite(tmp, i, 1, f);
|
|
}
|
|
}
|
|
fputc('\n', f);
|
|
}
|
|
fclose(f);
|
|
|
|
/* Mark it no longer modified */
|
|
env->modified = 0;
|
|
env->last_save_history = env->history;
|
|
|
|
/* If there was no file name set, set one */
|
|
if (!env->file_name) {
|
|
env->file_name = malloc(strlen(file) + 1);
|
|
memcpy(env->file_name, file, strlen(file) + 1);
|
|
}
|
|
|
|
update_title();
|
|
redraw_all();
|
|
}
|
|
|
|
/**
|
|
* Close the active buffer
|
|
*/
|
|
void close_buffer(void) {
|
|
buffer_t * previous_env = env;
|
|
buffer_t * new_env = buffer_close(env);
|
|
if (new_env == previous_env) {
|
|
/* ?? Failed to close buffer */
|
|
render_error("lolwat");
|
|
}
|
|
/* No more buffers, exit */
|
|
if (!new_env) {
|
|
quit();
|
|
}
|
|
/* Clean up the old buffer */
|
|
free(previous_env);
|
|
|
|
/* Set the new active buffer */
|
|
env = new_env;
|
|
|
|
/* Redraw the screen */
|
|
redraw_all();
|
|
}
|
|
|
|
/**
|
|
* Move the cursor down one line in the text region
|
|
*/
|
|
void cursor_down(void) {
|
|
/* If this isn't already the last line... */
|
|
if (env->line_no < env->line_count) {
|
|
|
|
/* Move the cursor down */
|
|
env->line_no += 1;
|
|
|
|
/*
|
|
* If the horizontal cursor position exceeds the width the new line,
|
|
* then move the cursor left to the extent of the new line.
|
|
*
|
|
* If we're in insert mode, we can go one cell beyond the end of the line
|
|
*/
|
|
if (env->col_no > env->lines[env->line_no-1]->actual + (env->mode == MODE_INSERT)) {
|
|
env->col_no = env->lines[env->line_no-1]->actual + (env->mode == MODE_INSERT);
|
|
if (env->col_no == 0) env->col_no = 1;
|
|
}
|
|
|
|
/*
|
|
* If the screen was scrolled horizontally, unscroll it;
|
|
* if it will be scrolled on this line as well, that will
|
|
* be handled by place_cursor_actual
|
|
*/
|
|
int redraw = 0;
|
|
if (env->coffset != 0) {
|
|
env->coffset = 0;
|
|
redraw = 1;
|
|
}
|
|
|
|
/* If we've scrolled past the bottom of the screen, scroll the screen */
|
|
if (env->line_no > env->offset + global_config.term_height - global_config.bottom_size - 1 - global_config.cursor_padding) {
|
|
env->offset += 1;
|
|
|
|
/* Tell terminal to scroll */
|
|
if (global_config.can_scroll) {
|
|
shift_up();
|
|
|
|
/* A new line appears on screen at the bottom, draw it */
|
|
int l = global_config.term_height - global_config.bottom_size - 1;
|
|
if (env->offset + l < env->line_count + 1) {
|
|
redraw_line(l-1, env->offset + l-1);
|
|
} else {
|
|
draw_excess_line(l - 1);
|
|
}
|
|
|
|
/* Redraw elements that were moved by scrolling */
|
|
redraw_tabbar();
|
|
redraw_statusbar();
|
|
redraw_commandline();
|
|
place_cursor_actual();
|
|
} else {
|
|
redraw_all();
|
|
}
|
|
return;
|
|
} else if (redraw) {
|
|
/* Otherwise, if we need to redraw because of coffset change, do that */
|
|
redraw_text();
|
|
}
|
|
|
|
/* Update the status bar */
|
|
redraw_statusbar();
|
|
|
|
/* Place the terminal cursor again */
|
|
place_cursor_actual();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Move the cursor up one line in the text region
|
|
*/
|
|
void cursor_up(void) {
|
|
/* If this isn't the first line already */
|
|
if (env->line_no > 1) {
|
|
|
|
/* Move the cursor down */
|
|
env->line_no -= 1;
|
|
|
|
/*
|
|
* If the horizontal cursor position exceeds the width the new line,
|
|
* then move the cursor left to the extent of the new line.
|
|
*
|
|
* If we're in insert mode, we can go one cell beyond the end of the line
|
|
*/
|
|
if (env->col_no > env->lines[env->line_no-1]->actual + (env->mode == MODE_INSERT)) {
|
|
env->col_no = env->lines[env->line_no-1]->actual + (env->mode == MODE_INSERT);
|
|
if (env->col_no == 0) env->col_no = 1;
|
|
}
|
|
|
|
/*
|
|
* If the screen was scrolled horizontally, unscroll it;
|
|
* if it will be scrolled on this line as well, that will
|
|
* be handled by place_cursor_actual
|
|
*/
|
|
int redraw = 0;
|
|
if (env->coffset != 0) {
|
|
env->coffset = 0;
|
|
redraw = 1;
|
|
}
|
|
|
|
int e = (env->offset == 0) ? env->offset : env->offset + global_config.cursor_padding;
|
|
if (env->line_no <= e) {
|
|
env->offset -= 1;
|
|
|
|
/* Tell terminal to scroll */
|
|
if (global_config.can_scroll) {
|
|
shift_down();
|
|
|
|
/*
|
|
* The line at the top of the screen should always be real
|
|
* so we can just call redraw_line here
|
|
*/
|
|
redraw_line(0,env->offset);
|
|
|
|
/* Redraw elements that were moved by scrolling */
|
|
redraw_tabbar();
|
|
redraw_statusbar();
|
|
redraw_commandline();
|
|
place_cursor_actual();
|
|
} else {
|
|
redraw_all();
|
|
}
|
|
return;
|
|
} else if (redraw) {
|
|
/* Otherwise, if we need to redraw because of coffset change, do that */
|
|
redraw_text();
|
|
}
|
|
|
|
/* Update the status bar */
|
|
redraw_statusbar();
|
|
|
|
/* Place the terminal cursor again */
|
|
place_cursor_actual();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Move the cursor one column left.
|
|
*/
|
|
void cursor_left(void) {
|
|
if (env->col_no > 1) {
|
|
env->col_no -= 1;
|
|
|
|
/* Update the status bar */
|
|
redraw_statusbar();
|
|
|
|
/* Place the terminal cursor again */
|
|
place_cursor_actual();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Move the cursor one column right.
|
|
*/
|
|
void cursor_right(void) {
|
|
|
|
/* If this isn't already the rightmost column we can reach on this line in this mode... */
|
|
if (env->col_no < env->lines[env->line_no-1]->actual + !!(env->mode == MODE_INSERT)) {
|
|
env->col_no += 1;
|
|
|
|
/* Update the status bar */
|
|
redraw_statusbar();
|
|
|
|
/* Place the terminal cursor again */
|
|
place_cursor_actual();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Move the cursor to the fron the of the line
|
|
*/
|
|
void cursor_home(void) {
|
|
env->col_no = 1;
|
|
|
|
/* Update the status bar */
|
|
redraw_statusbar();
|
|
|
|
/* Place the terminal cursor again */
|
|
place_cursor_actual();
|
|
}
|
|
|
|
/**
|
|
* Move the cursor to the end of the line.
|
|
*
|
|
* In INSERT mode, moves one cell right of the end of the line.
|
|
* In NORMAL mode, moves the cursor to the last occupied cell.
|
|
*/
|
|
void cursor_end(void) {
|
|
env->col_no = env->lines[env->line_no-1]->actual+!!(env->mode == MODE_INSERT);
|
|
|
|
/* Update the status bar */
|
|
redraw_statusbar();
|
|
|
|
/* Place the terminal cursor again */
|
|
place_cursor_actual();
|
|
}
|
|
|
|
/**
|
|
* Leave INSERT mode
|
|
*
|
|
* If the cursor is too far right, adjust it.
|
|
* Redraw the command line.
|
|
*/
|
|
void leave_insert(void) {
|
|
if (env->col_no > env->lines[env->line_no-1]->actual) {
|
|
env->col_no = env->lines[env->line_no-1]->actual;
|
|
if (env->col_no == 0) env->col_no = 1;
|
|
}
|
|
set_history_break();
|
|
env->mode = MODE_NORMAL;
|
|
redraw_commandline();
|
|
}
|
|
|
|
/**
|
|
* Process a user command.
|
|
*/
|
|
void process_command(char * cmd) {
|
|
/* Special case ! to run shell commands without parsing tokens */
|
|
if (*cmd == '!') {
|
|
/* Reset and draw some line feeds */
|
|
reset();
|
|
printf("\n\n");
|
|
|
|
/* Set buffered for shell application */
|
|
set_buffered();
|
|
|
|
/* Call the shell and wait for completion */
|
|
system(&cmd[1]);
|
|
|
|
/* Return to the editor, wait for user to press enter. */
|
|
set_unbuffered();
|
|
printf("\n\nPress ENTER to continue.");
|
|
fflush(stdout);
|
|
while (bim_getch() != ENTER_KEY);
|
|
|
|
/* Redraw the screen */
|
|
redraw_all();
|
|
|
|
/* Done processing command */
|
|
return;
|
|
}
|
|
|
|
/* Tokenize argument string on spaces */
|
|
char *p, *argv[512], *last;
|
|
int argc = 0;
|
|
for ((p = strtok_r(cmd, " ", &last)); p;
|
|
(p = strtok_r(NULL, " ", &last)), argc++) {
|
|
if (argc < 511) argv[argc] = p;
|
|
}
|
|
argv[argc] = NULL;
|
|
|
|
if (argc < 1) {
|
|
/* no op */
|
|
return;
|
|
}
|
|
|
|
if (!strcmp(argv[0], "e")) {
|
|
/* e: edit file */
|
|
if (argc > 1) {
|
|
/* This actually opens a new tab */
|
|
open_file(argv[1]);
|
|
update_title();
|
|
goto_line(0);
|
|
} else {
|
|
/* TODO: Reopen file? */
|
|
render_error("Expected a file to open...");
|
|
}
|
|
} else if (!strcmp(argv[0], "tabnew")) {
|
|
if (argc > 1) {
|
|
open_file(argv[1]);
|
|
update_title();
|
|
goto_line(0);
|
|
} else {
|
|
env = buffer_new();
|
|
setup_buffer(env);
|
|
redraw_all();
|
|
update_title();
|
|
}
|
|
} else if (!strcmp(argv[0], "w")) {
|
|
/* w: write file */
|
|
if (argc > 1) {
|
|
write_file(argv[1]);
|
|
} else {
|
|
write_file(env->file_name);
|
|
}
|
|
} else if (!strcmp(argv[0], "wq")) {
|
|
/* wq: write file and close buffer; if there's no file to write to, may do weird things */
|
|
write_file(env->file_name);
|
|
close_buffer();
|
|
} else if (!strcmp(argv[0], "q")) {
|
|
/* close buffer if unmodified */
|
|
if (env->modified) {
|
|
render_error("No write since last change. Use :q! to force exit.");
|
|
} else {
|
|
close_buffer();
|
|
}
|
|
} else if (!strcmp(argv[0], "q!")) {
|
|
/* close buffer without warning if unmodified */
|
|
close_buffer();
|
|
} else if (!strcmp(argv[0], "qa") || !strcmp(argv[0], "qall")) {
|
|
/* Close all */
|
|
try_quit();
|
|
} else if (!strcmp(argv[0], "qa!")) {
|
|
/* Forcefully exit editor */
|
|
quit();
|
|
} else if (!strcmp(argv[0], "tabp")) {
|
|
/* Next tab */
|
|
previous_tab();
|
|
update_title();
|
|
} else if (!strcmp(argv[0], "tabn")) {
|
|
/* Previous tab */
|
|
next_tab();
|
|
update_title();
|
|
} else if (!strcmp(argv[0], "indent")) {
|
|
env->indent = 1;
|
|
redraw_statusbar();
|
|
} else if (!strcmp(argv[0], "noindent")) {
|
|
env->indent = 0;
|
|
redraw_statusbar();
|
|
} else if (!strcmp(argv[0], "noh")) {
|
|
if (env->search) {
|
|
free(env->search);
|
|
env->search = NULL;
|
|
redraw_text();
|
|
}
|
|
} else if (!strcmp(argv[0], "help")) {
|
|
/*
|
|
* The repeated calls to redraw_commandline here make use
|
|
* of scrolling to draw this multiline help message on
|
|
* the same background as the command line.
|
|
*/
|
|
render_commandline_message(""); /* To clear command line */
|
|
render_commandline_message("\n");
|
|
render_commandline_message(" \033[1mbim - The standard ToaruOS Text Editor\033[22m\n");
|
|
render_commandline_message("\n");
|
|
render_commandline_message(" Available commands:\n");
|
|
render_commandline_message(" Quit with \033[3m:q\033[23m, \033[3m:qa\033[23m, \033[3m:q!\033[23m, \033[3m:qa!\033[23m\n");
|
|
render_commandline_message(" Write out with \033[3m:w \033[4mfile\033[24;23m\n");
|
|
render_commandline_message(" Set syntax with \033[3m:syntax \033[4mlanguage\033[24;23m\n");
|
|
render_commandline_message(" Open a new tab with \033[3m:e \033[4mpath/to/file\033[24;23m\n");
|
|
render_commandline_message(" \033[3m:tabn\033[23m and \033[3m:tabp\033[23m can be used to switch tabs\n");
|
|
render_commandline_message(" Set the color scheme with \033[3m:theme \033[4mtheme\033[24;23m\n");
|
|
render_commandline_message(" Set the behavior of the tab key with \033[3m:tabs\033[23m or \033[3m:spaces\033[23m\n");
|
|
render_commandline_message(" Set tabstop with \033[3m:tabstop \033[4mwidth\033[24;23m\n");
|
|
render_commandline_message("\n");
|
|
render_commandline_message(" %s\n", BIM_COPYRIGHT);
|
|
render_commandline_message("\n");
|
|
/* Redrawing the tabbar makes it look like we just shifted the whole view up */
|
|
redraw_tabbar();
|
|
redraw_commandline();
|
|
fflush(stdout);
|
|
/* Wait for a character so we can redraw the screen before continuing */
|
|
int c;
|
|
while ((c = bim_getch())== -1);
|
|
/* Make sure that key press actually gets used */
|
|
bim_unget(c);
|
|
/*
|
|
* Redraw everything to hide the help message and get the
|
|
* upper few lines of text on screen again
|
|
*/
|
|
redraw_all();
|
|
} else if (!strcmp(argv[0], "theme")) {
|
|
if (argc < 2) {
|
|
render_status_message("theme=%s", current_theme);
|
|
return;
|
|
}
|
|
for (struct theme_def * d = themes; d->name; ++d) {
|
|
if (!strcmp(argv[1], d->name)) {
|
|
d->load();
|
|
redraw_all();
|
|
return;
|
|
}
|
|
}
|
|
} else if (!strcmp(argv[0], "syntax")) {
|
|
if (argc < 2) {
|
|
render_status_message("syntax=%s", env->syntax ? env->syntax->name : "none");
|
|
return;
|
|
}
|
|
if (!strcmp(argv[1],"none")) {
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
env->lines[i]->istate = 0;
|
|
for (int j = 0; j < env->lines[i]->actual; ++j) {
|
|
env->lines[i]->text[j].flags = 0;
|
|
}
|
|
}
|
|
redraw_all();
|
|
return;
|
|
}
|
|
for (struct syntax_definition * s = syntaxes; s->name; ++s) {
|
|
if (!strcmp(argv[1],s->name)) {
|
|
env->syntax = s;
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
env->lines[i]->istate = 0;
|
|
}
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
redraw_all();
|
|
return;
|
|
}
|
|
}
|
|
render_error("unrecognized syntax type");
|
|
} else if (!strcmp(argv[0], "recalc")) {
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
env->lines[i]->istate = 0;
|
|
}
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
redraw_all();
|
|
} else if (!strcmp(argv[0], "tabs")) {
|
|
env->tabs = 1;
|
|
redraw_statusbar();
|
|
} else if (!strcmp(argv[0], "spaces")) {
|
|
env->tabs = 0;
|
|
redraw_statusbar();
|
|
} else if (!strcmp(argv[0], "tabstop")) {
|
|
if (argc < 2) {
|
|
render_status_message("tabstop=%d", env->tabstop);
|
|
} else {
|
|
int t = atoi(argv[1]);
|
|
if (t > 0 && t < 32) {
|
|
env->tabstop = t;
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_tabs(env->lines[i]);
|
|
}
|
|
redraw_all();
|
|
} else {
|
|
render_error("Invalid tabstop: %s", argv[1]);
|
|
}
|
|
}
|
|
} else if (!strcmp(argv[0], "clearyank")) {
|
|
if (global_config.yanks) {
|
|
for (unsigned int i = 0; i < global_config.yank_count; ++i) {
|
|
free(global_config.yanks[i]);
|
|
}
|
|
free(global_config.yanks);
|
|
global_config.yanks = NULL;
|
|
global_config.yank_count = 0;
|
|
redraw_statusbar();
|
|
}
|
|
} else if (!strcmp(argv[0], "padding")) {
|
|
if (argc < 2) {
|
|
render_status_message("padding=%d", global_config.cursor_padding);
|
|
} else {
|
|
global_config.cursor_padding = atoi(argv[1]);
|
|
place_cursor_actual();
|
|
}
|
|
} else if (isdigit(*argv[0])) {
|
|
/* Go to line number */
|
|
goto_line(atoi(argv[0]));
|
|
} else {
|
|
/* Unrecognized command */
|
|
render_error("Not an editor command: %s", argv[0]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tab completion for command mode.
|
|
*/
|
|
void command_tab_complete(char * buffer) {
|
|
/* Figure out which argument this is and where it starts */
|
|
int arg = 0;
|
|
char * buf = strdup(buffer);
|
|
char * b = buf;
|
|
|
|
char * args[32];
|
|
|
|
int candidate_count= 0;
|
|
int candidate_space = 4;
|
|
char ** candidates = malloc(sizeof(char*)*candidate_space);
|
|
|
|
/* Accept whitespace before first argument */
|
|
while (*b == ' ') b++;
|
|
char * start = b;
|
|
args[0] = start;
|
|
while (*b && *b != ' ') b++;
|
|
while (*b) {
|
|
while (*b == ' ') {
|
|
*b = '\0';
|
|
b++;
|
|
}
|
|
start = b;
|
|
arg++;
|
|
if (arg < 32) {
|
|
args[arg] = start;
|
|
}
|
|
while (*b && *b != ' ') b++;
|
|
}
|
|
|
|
/**
|
|
* Check a possible candidate and add it to the
|
|
* candidates list, expanding as necessary,
|
|
* if it matches for the current argument.
|
|
*/
|
|
#define add_candidate(candidate) \
|
|
do { \
|
|
char * _arg = args[arg]; \
|
|
int r = strncmp(_arg, candidate, strlen(_arg)); \
|
|
if (!r) { \
|
|
if (candidate_count == candidate_space) { \
|
|
candidate_space *= 2; \
|
|
candidates = realloc(candidates,sizeof(char *) * candidate_space); \
|
|
} \
|
|
candidates[candidate_count] = strdup(candidate); \
|
|
candidate_count++; \
|
|
} \
|
|
} while (0)
|
|
|
|
if (arg == 0) {
|
|
/* Complete command names */
|
|
add_candidate("help");
|
|
add_candidate("recalc");
|
|
add_candidate("syntax");
|
|
add_candidate("tabn");
|
|
add_candidate("tabp");
|
|
add_candidate("tabnew");
|
|
add_candidate("theme");
|
|
add_candidate("tabs");
|
|
add_candidate("tabstop");
|
|
add_candidate("spaces");
|
|
add_candidate("noh");
|
|
add_candidate("clearyank");
|
|
add_candidate("indent");
|
|
add_candidate("noindent");
|
|
add_candidate("padding");
|
|
goto _accept_candidate;
|
|
}
|
|
|
|
if (arg == 1 && !strcmp(args[0], "syntax")) {
|
|
/* Complete syntax options */
|
|
add_candidate("none");
|
|
for (struct syntax_definition * s = syntaxes; s->name; ++s) {
|
|
add_candidate(s->name);
|
|
}
|
|
goto _accept_candidate;
|
|
}
|
|
|
|
if (arg == 1 && !strcmp(args[0], "theme")) {
|
|
/* Complete color theme names */
|
|
for (struct theme_def * s = themes; s->name; ++s) {
|
|
add_candidate(s->name);
|
|
}
|
|
goto _accept_candidate;
|
|
}
|
|
|
|
if (arg == 1 && (!strcmp(args[0], "e") || !strcmp(args[0], "tabnew"))) {
|
|
/* Complete file paths */
|
|
|
|
/* First, find the deepest directory match */
|
|
char * tmp = strdup(args[arg]);
|
|
char * last_slash = strrchr(tmp, '/');
|
|
DIR * dirp;
|
|
if (last_slash) {
|
|
*last_slash = '\0';
|
|
if (last_slash == tmp) {
|
|
/* Started with slash, and it was the only slash */
|
|
dirp = opendir("/");
|
|
} else {
|
|
dirp = opendir(tmp);
|
|
}
|
|
} else {
|
|
/* No directory match, completing from current directory */
|
|
dirp = opendir(".");
|
|
tmp[0] = '\0';
|
|
}
|
|
|
|
if (!dirp) {
|
|
/* Directory match doesn't exist, no candidates to populate */
|
|
free(tmp);
|
|
goto done;
|
|
}
|
|
|
|
struct dirent * ent = readdir(dirp);
|
|
while (ent != NULL) {
|
|
if (ent->d_name[0] != '.' || (last_slash ? (last_slash[1] == '.') : (tmp[0] == '.'))) {
|
|
struct stat statbuf;
|
|
/* Figure out if this file is a directory */
|
|
if (last_slash) {
|
|
char * x = malloc(strlen(tmp) + 1 + strlen(ent->d_name) + 1);
|
|
snprintf(x, strlen(tmp) + 1 + strlen(ent->d_name) + 1, "%s/%s",tmp,ent->d_name);
|
|
stat(x, &statbuf);
|
|
free(x);
|
|
} else {
|
|
stat(ent->d_name, &statbuf);
|
|
}
|
|
|
|
/* Build the complete argument name to tab complete */
|
|
char s[1024] = {0};
|
|
if (last_slash == tmp) {
|
|
strcat(s,"/");
|
|
} else if (*tmp) {
|
|
strcat(s,tmp);
|
|
strcat(s,"/");
|
|
}
|
|
strcat(s,ent->d_name);
|
|
/*
|
|
* If it is a directory, add a / to the end so the next completion
|
|
* attempt will complete the directory's contents.
|
|
*/
|
|
if (S_ISDIR(statbuf.st_mode)) {
|
|
strcat(s,"/");
|
|
}
|
|
add_candidate(s);
|
|
}
|
|
ent = readdir(dirp);
|
|
}
|
|
closedir(dirp);
|
|
free(tmp);
|
|
goto _accept_candidate;
|
|
}
|
|
|
|
_accept_candidate:
|
|
if (candidate_count == 0) {
|
|
redraw_statusbar();
|
|
goto done;
|
|
}
|
|
|
|
if (candidate_count == 1) {
|
|
/* Only one completion possibility */
|
|
redraw_statusbar();
|
|
|
|
/* Fill out the rest of the command */
|
|
char * cstart = (buffer) + (start - buf);
|
|
for (unsigned int i = 0; i < strlen(candidates[0]); ++i) {
|
|
*cstart = candidates[0][i];
|
|
cstart++;
|
|
}
|
|
*cstart = '\0';
|
|
} else {
|
|
/* Print candidates in status bar */
|
|
char tmp[global_config.term_width+1];
|
|
memset(tmp, 0, global_config.term_width+1);
|
|
int offset = 0;
|
|
for (int i = 0; i < candidate_count; ++i) {
|
|
if (offset + 1 + (signed)strlen(candidates[i]) > global_config.term_width - 5) {
|
|
strcat(tmp, "...");
|
|
break;
|
|
}
|
|
if (offset > 0) {
|
|
strcat(tmp, " ");
|
|
offset++;
|
|
}
|
|
strcat(tmp, candidates[i]);
|
|
offset += strlen(candidates[i]);
|
|
}
|
|
render_status_message("%s", tmp);
|
|
|
|
/* Complete to longest common substring */
|
|
char * cstart = (buffer) + (start - buf);
|
|
for (int i = 0; i < 1023 /* max length of command */; i++) {
|
|
for (int j = 1; j < candidate_count; ++j) {
|
|
if (candidates[0][i] != candidates[j][i]) goto _reject;
|
|
}
|
|
*cstart = candidates[0][i];
|
|
cstart++;
|
|
}
|
|
/* End of longest common substring */
|
|
_reject:
|
|
*cstart = '\0';
|
|
}
|
|
|
|
/* Free candidates */
|
|
for (int i = 0; i < candidate_count; ++i) {
|
|
free(candidates[i]);
|
|
}
|
|
|
|
/* Redraw command line */
|
|
done:
|
|
redraw_commandline();
|
|
printf(":%s", buffer);
|
|
|
|
free(candidates);
|
|
free(buf);
|
|
}
|
|
|
|
/**
|
|
* Command mode
|
|
*
|
|
* Accept a user command and then process it and
|
|
* return to normal mode.
|
|
*
|
|
* TODO: We only have basic line editing here; it might be
|
|
* nice to add more advanced line editing, like cursor
|
|
* movement, tab completion, etc. This is easier than
|
|
* with the shell since we have a lot more control over
|
|
* where the command input bar is rendered.
|
|
*/
|
|
void command_mode(void) {
|
|
int c;
|
|
char buffer[1024] = {0};
|
|
int buffer_len = 0;
|
|
|
|
redraw_commandline();
|
|
printf(":");
|
|
show_cursor();
|
|
|
|
while ((c = bim_getch())) {
|
|
if (c == -1) {
|
|
/* Time out */
|
|
continue;
|
|
}
|
|
if (c == '\033') {
|
|
/* Escape, cancel command */
|
|
break;
|
|
} else if (c == ENTER_KEY) {
|
|
/* Enter, run command */
|
|
process_command(buffer);
|
|
break;
|
|
} else if (c == '\t') {
|
|
/* Handle tab completion */
|
|
command_tab_complete(buffer);
|
|
buffer_len = strlen(buffer);
|
|
} else if (c == BACKSPACE_KEY || c == DELETE_KEY) {
|
|
/* Backspace, delete last character in command buffer */
|
|
if (buffer_len > 0) {
|
|
buffer_len -= 1;
|
|
buffer[buffer_len] = '\0';
|
|
redraw_commandline();
|
|
printf(":%s", buffer);
|
|
} else {
|
|
/* If backspaced through entire command, cancel command mode */
|
|
redraw_commandline();
|
|
break;
|
|
}
|
|
} else {
|
|
/* Regular character */
|
|
buffer[buffer_len] = c;
|
|
buffer_len++;
|
|
printf("%c", c);
|
|
}
|
|
show_cursor();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Search forward from the given cursor position
|
|
* to find a basic search match.
|
|
*
|
|
* This could be more complicated...
|
|
*/
|
|
void find_match(int from_line, int from_col, int * out_line, int * out_col, uint32_t * str) {
|
|
int col = from_col;
|
|
for (int i = from_line; i <= env->line_count; ++i) {
|
|
line_t * line = env->lines[i - 1];
|
|
|
|
int j = col - 1;
|
|
while (j < line->actual + 1) {
|
|
int k = j;
|
|
uint32_t * match = str;
|
|
while (k < line->actual + 1) {
|
|
if (*match == '\0') {
|
|
*out_line = i;
|
|
*out_col = j + 1;
|
|
return;
|
|
}
|
|
/* TODO search for UTF-8 sequences? */
|
|
if (*match != line->text[k].codepoint) break;
|
|
match++;
|
|
k++;
|
|
}
|
|
j++;
|
|
}
|
|
col = 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Search backwards for matching string.
|
|
*/
|
|
void find_match_backwards(int from_line, int from_col, int * out_line, int * out_col, uint32_t * str) {
|
|
int col = from_col;
|
|
for (int i = from_line; i >= 1; --i) {
|
|
line_t * line = env->lines[i-1];
|
|
|
|
int j = col - 1;
|
|
while (j > -1) {
|
|
int k = j;
|
|
uint32_t * match = str;
|
|
while (k < line->actual + 1) {
|
|
if (*match == '\0') {
|
|
*out_line = i;
|
|
*out_col = j + 1;
|
|
return;
|
|
}
|
|
/* TODO search for UTF-8 sequences? */
|
|
if (*match != line->text[k].codepoint) break;
|
|
match++;
|
|
k++;
|
|
}
|
|
j--;
|
|
}
|
|
col = (i > 1) ? (env->lines[i-2]->actual) : -1;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Draw the matched search result.
|
|
*/
|
|
void draw_search_match(int line, uint32_t * buffer, int redraw_buffer) {
|
|
place_cursor_actual();
|
|
redraw_text();
|
|
if (line != -1) {
|
|
/*
|
|
* TODO this should probably mark the relevant
|
|
* regions so that redraw_text can hilight it
|
|
*/
|
|
set_colors(COLOR_SEARCH_FG, COLOR_SEARCH_BG);
|
|
place_cursor_actual();
|
|
|
|
uint32_t * c = buffer;
|
|
while (*c) {
|
|
char tmp[7] = {0}; /* Max six bytes, use 7 to ensure last is always nil */
|
|
to_eight(*c, tmp);
|
|
printf("%s", tmp);
|
|
c++;
|
|
}
|
|
}
|
|
redraw_statusbar();
|
|
redraw_commandline();
|
|
if (redraw_buffer != -1) {
|
|
printf(redraw_buffer == 1 ? "/" : "?");
|
|
uint32_t * c = buffer;
|
|
while (*c) {
|
|
char tmp[7] = {0}; /* Max six bytes, use 7 to ensure last is always nil */
|
|
to_eight(*c, tmp);
|
|
printf("%s", tmp);
|
|
c++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Search mode
|
|
*
|
|
* Search text for substring match.
|
|
*/
|
|
void search_mode(int direction) {
|
|
uint32_t c;
|
|
uint32_t buffer[1024] = {0};
|
|
int buffer_len = 0;
|
|
|
|
/* utf-8 decoding */
|
|
|
|
/* Remember where the cursor is so we can cancel */
|
|
int prev_line = env->line_no;
|
|
int prev_col = env->col_no;
|
|
int prev_coffset = env->coffset;
|
|
int prev_offset = env->offset;
|
|
|
|
redraw_commandline();
|
|
printf(direction == 1 ? "/" : "?");
|
|
show_cursor();
|
|
|
|
uint32_t state = 0;
|
|
int cin;
|
|
|
|
while ((cin = bim_getch())) {
|
|
if (cin == -1) {
|
|
/* Time out */
|
|
continue;
|
|
}
|
|
if (!decode(&state, &c, cin)) {
|
|
if (c == '\033') {
|
|
/* Cancel search */
|
|
env->line_no = prev_line;
|
|
env->col_no = prev_col;
|
|
redraw_all();
|
|
break;
|
|
} else if (c == ENTER_KEY) {
|
|
/* Exit search */
|
|
if (env->search) {
|
|
free(env->search);
|
|
}
|
|
env->search = malloc((buffer_len + 1) * sizeof(uint32_t));
|
|
memcpy(env->search, buffer, (buffer_len + 1) * sizeof(uint32_t));
|
|
break;
|
|
} else if (c == BACKSPACE_KEY || c == DELETE_KEY) {
|
|
/* Backspace, delete last character in search buffer */
|
|
if (buffer_len > 0) {
|
|
buffer_len -= 1;
|
|
buffer[buffer_len] = '\0';
|
|
/* Search from beginning to find first match */
|
|
int line = -1, col = -1;
|
|
if (direction == 1) {
|
|
find_match(prev_line, prev_col, &line, &col, buffer);
|
|
} else {
|
|
find_match_backwards(prev_line, prev_col, &line, &col, buffer);
|
|
}
|
|
|
|
if (line != -1) {
|
|
env->col_no = col;
|
|
env->line_no = line;
|
|
}
|
|
|
|
draw_search_match(line, buffer, direction);
|
|
|
|
} else {
|
|
/* If backspaced through entire search term, cancel search */
|
|
redraw_commandline();
|
|
env->coffset = prev_coffset;
|
|
env->offset = prev_offset;
|
|
env->col_no = prev_col;
|
|
env->line_no = prev_line;
|
|
redraw_all();
|
|
break;
|
|
}
|
|
} else {
|
|
/* Regular character */
|
|
buffer[buffer_len] = c;
|
|
buffer_len++;
|
|
buffer[buffer_len] = '\0';
|
|
char tmp[7] = {0}; /* Max six bytes, use 7 to ensure last is always nil */
|
|
to_eight(c, tmp);
|
|
printf("%s", tmp);
|
|
|
|
/* Find the next search match */
|
|
int line = -1, col = -1;
|
|
if (direction == 1) {
|
|
find_match(prev_line, prev_col, &line, &col, buffer);
|
|
} else {
|
|
find_match_backwards(prev_line, prev_col, &line, &col, buffer);
|
|
}
|
|
|
|
if (line != -1) {
|
|
env->col_no = col;
|
|
env->line_no = line;
|
|
} else {
|
|
env->coffset = prev_coffset;
|
|
env->offset = prev_offset;
|
|
env->col_no = prev_col;
|
|
env->line_no = prev_line;
|
|
}
|
|
draw_search_match(line, buffer, direction);
|
|
}
|
|
show_cursor();
|
|
} else if (state == UTF8_REJECT) {
|
|
state = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Find the next search result, or loop back around if at the end.
|
|
*/
|
|
void search_next(void) {
|
|
if (!env->search) return;
|
|
int line = -1, col = -1;
|
|
find_match(env->line_no, env->col_no+1, &line, &col, env->search);
|
|
|
|
if (line == -1) {
|
|
find_match(1,1, &line, &col, env->search);
|
|
if (line == -1) return;
|
|
}
|
|
|
|
env->col_no = col;
|
|
env->line_no = line;
|
|
draw_search_match(line, env->search, -1);
|
|
}
|
|
|
|
/**
|
|
* Find the previous search result, or loop to the end of the file.
|
|
*/
|
|
void search_prev(void) {
|
|
if (!env->search) return;
|
|
int line = -1, col = -1;
|
|
find_match_backwards(env->line_no, env->col_no-1, &line, &col, env->search);
|
|
|
|
if (line == -1) {
|
|
find_match_backwards(env->line_count, env->lines[env->line_count-1]->actual, &line, &col, env->search);
|
|
if (line == -1) return;
|
|
}
|
|
|
|
env->col_no = col;
|
|
env->line_no = line;
|
|
draw_search_match(line, env->search, -1);
|
|
}
|
|
|
|
/**
|
|
* Find the matching paren for this one.
|
|
*
|
|
* This approach skips having to do its own syntax parsing
|
|
* to deal with, eg., erroneous parens in comments. It does
|
|
* this by finding the matching paren with the same flag
|
|
* value, thus parens in strings will match, parens outside
|
|
* of strings will match, but parens in strings won't
|
|
* match parens outside of strings and so on.
|
|
*/
|
|
void find_matching_paren(void) {
|
|
if (env->col_no > env->lines[env->line_no-1]->actual) {
|
|
return; /* Invalid cursor position */
|
|
}
|
|
|
|
/* TODO: vim can find the nearest paren to start searching from, we need to be on one right now */
|
|
|
|
int paren_match = 0;
|
|
int direction = 0;
|
|
int start = env->lines[env->line_no-1]->text[env->col_no-1].codepoint;
|
|
int flags = env->lines[env->line_no-1]->text[env->col_no-1].flags;
|
|
int count = 0;
|
|
|
|
/* TODO what about unicode parens? */
|
|
char * p = "()[]{}<>";
|
|
for (int i = 0; p[i]; ++i) {
|
|
if (start == p[i]) {
|
|
direction = (i % 2 == 0) ? 1 : -1;
|
|
paren_match = p[(i % 2 == 0) ? (i+1) : (i-1)];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!paren_match) return;
|
|
|
|
/* Scan for match */
|
|
int line = env->line_no;
|
|
int col = env->col_no;
|
|
|
|
do {
|
|
while (col > 0 && col < env->lines[line-1]->actual + 1) {
|
|
/* Only match on same syntax */
|
|
if (env->lines[line-1]->text[col-1].flags == flags) {
|
|
/* Count up on same direction */
|
|
if (env->lines[line-1]->text[col-1].codepoint == start) count++;
|
|
/* Count down on opposite direction */
|
|
if (env->lines[line-1]->text[col-1].codepoint == paren_match) {
|
|
count--;
|
|
/* When count == 0 we have a match */
|
|
if (count == 0) goto _match_found;
|
|
}
|
|
}
|
|
col += direction;
|
|
}
|
|
|
|
line += direction;
|
|
|
|
/* Reached first/last line with no match */
|
|
if (line == 0 || line == env->line_count + 1) {
|
|
return;
|
|
}
|
|
|
|
/* Reset column to start/end of line, depending on direction */
|
|
if (direction > 0) {
|
|
col = 1;
|
|
} else {
|
|
col = env->lines[line-1]->actual;
|
|
}
|
|
} while (1);
|
|
|
|
_match_found:
|
|
env->line_no = line;
|
|
env->col_no = col;
|
|
place_cursor_actual();
|
|
}
|
|
|
|
/**
|
|
* Handle mouse event
|
|
*/
|
|
void handle_mouse(void) {
|
|
int buttons = bim_getch() - 32;
|
|
int x = bim_getch() - 32;
|
|
int y = bim_getch() - 32;
|
|
|
|
if (buttons == 64) {
|
|
/* Scroll up */
|
|
for (int i = 0; i < 5; ++i) {
|
|
cursor_up();
|
|
}
|
|
return;
|
|
} else if (buttons == 65) {
|
|
/* Scroll down */
|
|
for (int i = 0; i < 5; ++i) {
|
|
cursor_down();
|
|
}
|
|
return;
|
|
} else if (buttons == 3) {
|
|
/* Move cursor to position */
|
|
|
|
if (x < 0) return;
|
|
if (y < 0) return;
|
|
|
|
if (y == 1) {
|
|
/* Pick from tabs */
|
|
int _x = 0;
|
|
for (int i = 0; i < buffers_len; i++) {
|
|
buffer_t * _env = buffers[i];
|
|
if (_env->modified) {
|
|
_x += 2;
|
|
}
|
|
if (_env->file_name) {
|
|
_x += 2 + strlen(_env->file_name);
|
|
} else {
|
|
_x += strlen(" [No Name] ");
|
|
}
|
|
if (_x > x) {
|
|
env = buffers[i];
|
|
redraw_all();
|
|
return;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Figure out y coordinate */
|
|
int line_no = y + env->offset - 1;
|
|
int col_no = -1;
|
|
|
|
if (line_no > env->line_count) {
|
|
line_no = env->line_count;
|
|
}
|
|
|
|
/* Account for the left hand gutter */
|
|
int num_size = num_width() + 3;
|
|
int _x = num_size - (line_no == env->line_no ? env->coffset : 0);
|
|
|
|
/* Determine where the cursor is physically */
|
|
for (int i = 0; i < env->lines[line_no-1]->actual; ++i) {
|
|
char_t * c = &env->lines[line_no-1]->text[i];
|
|
_x += c->display_width;
|
|
if (_x > x-1) {
|
|
col_no = i+1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (col_no == -1 || col_no > env->lines[line_no-1]->actual) {
|
|
col_no = env->lines[line_no-1]->actual;
|
|
}
|
|
|
|
env->line_no = line_no;
|
|
env->col_no = col_no;
|
|
place_cursor_actual();
|
|
}
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Append a character at the current cursor point.
|
|
*/
|
|
void insert_char(unsigned int c) {
|
|
if (!c) {
|
|
render_error("Inserted nil byte?");
|
|
return;
|
|
}
|
|
char_t _c;
|
|
_c.codepoint = c;
|
|
_c.flags = 0;
|
|
_c.display_width = codepoint_width(c);
|
|
line_t * line = env->lines[env->line_no - 1];
|
|
line_t * nline = line_insert(line, _c, env->col_no - 1, env->line_no - 1);
|
|
if (line != nline) {
|
|
env->lines[env->line_no - 1] = nline;
|
|
}
|
|
env->col_no += 1;
|
|
set_modified();
|
|
}
|
|
|
|
/**
|
|
* Replace a single character at the current cursor point
|
|
*/
|
|
void replace_char(unsigned int c) {
|
|
if (env->col_no < 1 || env->col_no > env->lines[env->line_no-1]->actual) return;
|
|
|
|
char_t _c;
|
|
_c.codepoint = c;
|
|
_c.flags = 0;
|
|
_c.display_width = codepoint_width(c);
|
|
|
|
line_replace(env->lines[env->line_no-1], _c, env->col_no-1, env->line_no-1);
|
|
|
|
redraw_line(env->line_no - env->offset - 1, env->line_no-1);
|
|
set_modified();
|
|
}
|
|
|
|
/**
|
|
* Undo a history entry.
|
|
*/
|
|
void undo_history(void) {
|
|
if (!global_config.history_enabled) return;
|
|
|
|
env->loading = 1;
|
|
history_t * e = env->history;
|
|
|
|
if (e->type == HISTORY_SENTINEL) {
|
|
env->loading = 0;
|
|
render_commandline_message("Already at oldest change");
|
|
return;
|
|
}
|
|
|
|
int count_chars = 0;
|
|
int count_lines = 0;
|
|
|
|
do {
|
|
if (e->type == HISTORY_SENTINEL) break;
|
|
|
|
switch (e->type) {
|
|
case HISTORY_INSERT:
|
|
/* Delete */
|
|
line_delete(
|
|
env->lines[e->insert_delete_replace.lineno],
|
|
e->insert_delete_replace.offset+1,
|
|
e->insert_delete_replace.lineno
|
|
);
|
|
env->line_no = e->insert_delete_replace.lineno + 1;
|
|
env->col_no = e->insert_delete_replace.offset + 1;
|
|
count_chars++;
|
|
break;
|
|
case HISTORY_DELETE:
|
|
{
|
|
char_t _c = {codepoint_width(e->insert_delete_replace.old_codepoint),0,e->insert_delete_replace.old_codepoint};
|
|
env->lines[e->insert_delete_replace.lineno] = line_insert(
|
|
env->lines[e->insert_delete_replace.lineno],
|
|
_c,
|
|
e->insert_delete_replace.offset-1,
|
|
e->insert_delete_replace.lineno
|
|
);
|
|
}
|
|
env->line_no = e->insert_delete_replace.lineno + 1;
|
|
env->col_no = e->insert_delete_replace.offset + 2;
|
|
count_chars++;
|
|
break;
|
|
case HISTORY_REPLACE:
|
|
{
|
|
char_t _o = {codepoint_width(e->insert_delete_replace.old_codepoint),0,e->insert_delete_replace.old_codepoint};
|
|
line_replace(
|
|
env->lines[e->insert_delete_replace.lineno],
|
|
_o,
|
|
e->insert_delete_replace.offset,
|
|
e->insert_delete_replace.lineno
|
|
);
|
|
}
|
|
env->line_no = e->insert_delete_replace.lineno + 1;
|
|
env->col_no = e->insert_delete_replace.offset + 1;
|
|
count_chars++;
|
|
break;
|
|
case HISTORY_REMOVE_LINE:
|
|
env->lines = add_line(env->lines, e->remove_replace_line.lineno);
|
|
replace_line(env->lines, e->remove_replace_line.lineno, e->remove_replace_line.old_contents);
|
|
env->line_no = e->remove_replace_line.lineno + 2;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_ADD_LINE:
|
|
env->lines = remove_line(env->lines, e->add_merge_split_lines.lineno);
|
|
env->line_no = e->add_merge_split_lines.lineno + 1;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_REPLACE_LINE:
|
|
replace_line(env->lines, e->remove_replace_line.lineno, e->remove_replace_line.old_contents);
|
|
env->line_no = e->remove_replace_line.lineno + 1;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_SPLIT_LINE:
|
|
env->lines = merge_lines(env->lines, e->add_merge_split_lines.lineno+1);
|
|
env->line_no = e->add_merge_split_lines.lineno + 2;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_MERGE_LINES:
|
|
env->lines = split_line(env->lines, e->add_merge_split_lines.lineno-1, e->add_merge_split_lines.split);
|
|
env->line_no = e->add_merge_split_lines.lineno;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_BREAK:
|
|
/* Ignore break */
|
|
break;
|
|
default:
|
|
render_error("Unknown type %d!\n", e->type);
|
|
break;
|
|
}
|
|
|
|
env->history = e->previous;
|
|
e = env->history;
|
|
} while (e->type != HISTORY_BREAK);
|
|
|
|
if (env->line_no > env->line_count) env->line_no = env->line_count;
|
|
if (env->col_no > env->lines[env->line_no-1]->actual) env->col_no = env->lines[env->line_no-1]->actual;
|
|
|
|
env->modified = (env->history != env->last_save_history);
|
|
|
|
env->loading = 0;
|
|
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
env->lines[i]->istate = 0;
|
|
recalculate_tabs(env->lines[i]);
|
|
}
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
place_cursor_actual();
|
|
update_title();
|
|
redraw_all();
|
|
render_commandline_message("%d character%s, %d line%s changed",
|
|
count_chars, (count_chars == 1) ? "" : "s",
|
|
count_lines, (count_lines == 1) ? "" : "s");
|
|
}
|
|
|
|
/**
|
|
* Replay a history entry.
|
|
*/
|
|
void redo_history(void) {
|
|
if (!global_config.history_enabled) return;
|
|
|
|
env->loading = 1;
|
|
history_t * e = env->history->next;
|
|
|
|
if (!e) {
|
|
env->loading = 0;
|
|
render_commandline_message("Already at newest change");
|
|
return;
|
|
}
|
|
|
|
int count_chars = 0;
|
|
int count_lines = 0;
|
|
|
|
while (e) {
|
|
if (e->type == HISTORY_BREAK) {
|
|
env->history = e;
|
|
break;
|
|
}
|
|
|
|
switch (e->type) {
|
|
case HISTORY_INSERT:
|
|
{
|
|
char_t _c = {codepoint_width(e->insert_delete_replace.codepoint),0,e->insert_delete_replace.codepoint};
|
|
env->lines[e->insert_delete_replace.lineno] = line_insert(
|
|
env->lines[e->insert_delete_replace.lineno],
|
|
_c,
|
|
e->insert_delete_replace.offset,
|
|
e->insert_delete_replace.lineno
|
|
);
|
|
}
|
|
env->line_no = e->insert_delete_replace.lineno + 1;
|
|
env->col_no = e->insert_delete_replace.offset + 2;
|
|
count_chars++;
|
|
break;
|
|
case HISTORY_DELETE:
|
|
/* Delete */
|
|
line_delete(
|
|
env->lines[e->insert_delete_replace.lineno],
|
|
e->insert_delete_replace.offset,
|
|
e->insert_delete_replace.lineno
|
|
);
|
|
env->line_no = e->insert_delete_replace.lineno + 1;
|
|
env->col_no = e->insert_delete_replace.offset + 1;
|
|
count_chars++;
|
|
break;
|
|
case HISTORY_REPLACE:
|
|
{
|
|
char_t _o = {codepoint_width(e->insert_delete_replace.codepoint),0,e->insert_delete_replace.codepoint};
|
|
line_replace(
|
|
env->lines[e->insert_delete_replace.lineno],
|
|
_o,
|
|
e->insert_delete_replace.offset,
|
|
e->insert_delete_replace.lineno
|
|
);
|
|
}
|
|
env->line_no = e->insert_delete_replace.lineno + 1;
|
|
env->col_no = e->insert_delete_replace.offset + 2;
|
|
count_chars++;
|
|
break;
|
|
case HISTORY_ADD_LINE:
|
|
env->lines = add_line(env->lines, e->remove_replace_line.lineno);
|
|
env->line_no = e->remove_replace_line.lineno + 2;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_REMOVE_LINE:
|
|
env->lines = remove_line(env->lines, e->remove_replace_line.lineno);
|
|
env->line_no = e->add_merge_split_lines.lineno + 1;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_REPLACE_LINE:
|
|
replace_line(env->lines, e->remove_replace_line.lineno, e->remove_replace_line.contents);
|
|
env->line_no = e->remove_replace_line.lineno + 2;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_MERGE_LINES:
|
|
env->lines = merge_lines(env->lines, e->add_merge_split_lines.lineno);
|
|
env->line_no = e->remove_replace_line.lineno + 1;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_SPLIT_LINE:
|
|
env->lines = split_line(env->lines, e->add_merge_split_lines.lineno, e->add_merge_split_lines.split);
|
|
env->line_no = e->remove_replace_line.lineno + 2;
|
|
env->col_no = 1;
|
|
count_lines++;
|
|
break;
|
|
case HISTORY_BREAK:
|
|
/* Ignore break */
|
|
break;
|
|
default:
|
|
render_error("Unknown type %d!\n", e->type);
|
|
break;
|
|
}
|
|
|
|
env->history = e;
|
|
e = e->next;
|
|
}
|
|
|
|
if (env->line_no > env->line_count) env->line_no = env->line_count;
|
|
if (env->col_no > env->lines[env->line_no-1]->actual) env->col_no = env->lines[env->line_no-1]->actual;
|
|
|
|
env->modified = (env->history != env->last_save_history);
|
|
|
|
env->loading = 0;
|
|
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
env->lines[i]->istate = 0;
|
|
recalculate_tabs(env->lines[i]);
|
|
}
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
place_cursor_actual();
|
|
update_title();
|
|
redraw_all();
|
|
render_commandline_message("%d character%s, %d line%s changed",
|
|
count_chars, (count_chars == 1) ? "" : "s",
|
|
count_lines, (count_lines == 1) ? "" : "s");
|
|
}
|
|
|
|
/**
|
|
* Move the cursor the start of the previous word.
|
|
*/
|
|
void word_left(void) {
|
|
int line_no = env->line_no;
|
|
int col_no = env->col_no;
|
|
|
|
do {
|
|
col_no--;
|
|
if (col_no == 0) {
|
|
line_no--;
|
|
if (line_no == 0) {
|
|
goto_line(1);
|
|
return;
|
|
}
|
|
col_no = env->lines[line_no-1]->actual + 1;
|
|
}
|
|
} while (isspace(env->lines[line_no-1]->text[col_no-1].codepoint));
|
|
|
|
do {
|
|
col_no--;
|
|
if (col_no == 0) {
|
|
line_no--;
|
|
if (line_no == 0) {
|
|
goto_line(1);
|
|
return;
|
|
}
|
|
col_no = env->lines[line_no-1]->actual + 1;
|
|
}
|
|
if (col_no == 1) {
|
|
env->col_no = 1;
|
|
env->line_no = line_no;
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
return;
|
|
}
|
|
} while (!isspace(env->lines[line_no-1]->text[col_no-1].codepoint));
|
|
|
|
env->col_no = col_no;
|
|
env->line_no = line_no;
|
|
cursor_right();
|
|
}
|
|
|
|
/**
|
|
* Word right
|
|
*/
|
|
void word_right(void) {
|
|
int line_no = env->line_no;
|
|
int col_no = env->col_no;
|
|
|
|
do {
|
|
col_no++;
|
|
if (col_no >= env->lines[line_no-1]->actual + 1) {
|
|
line_no++;
|
|
if (line_no >= env->line_count) {
|
|
env->col_no = env->lines[env->line_count-1]->actual;
|
|
env->line_no = env->line_count;
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
return;
|
|
}
|
|
col_no = 0;
|
|
break;
|
|
}
|
|
} while (!isspace(env->lines[line_no-1]->text[col_no-1].codepoint));
|
|
|
|
do {
|
|
col_no++;
|
|
if (col_no >= env->lines[line_no-1]->actual + 1) {
|
|
line_no++;
|
|
if (line_no >= env->line_count) {
|
|
env->col_no = env->lines[env->line_count-1]->actual;
|
|
env->line_no = env->line_count;
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
return;
|
|
}
|
|
col_no = 1;
|
|
break;
|
|
}
|
|
} while (isspace(env->lines[line_no-1]->text[col_no-1].codepoint));
|
|
|
|
env->col_no = col_no;
|
|
env->line_no = line_no;
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Backspace from the current cursor position.
|
|
*/
|
|
void delete_at_cursor(void) {
|
|
if (env->col_no > 1) {
|
|
line_delete(env->lines[env->line_no - 1], env->col_no - 1, env->line_no - 1);
|
|
env->col_no -= 1;
|
|
if (env->coffset > 0) env->coffset--;
|
|
redraw_line(env->line_no - env->offset - 1, env->line_no-1);
|
|
set_modified();
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
} else if (env->line_no > 1) {
|
|
int tmp = env->lines[env->line_no - 2]->actual;
|
|
merge_lines(env->lines, env->line_no - 1);
|
|
env->line_no -= 1;
|
|
env->col_no = tmp+1;
|
|
redraw_text();
|
|
set_modified();
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
}
|
|
}
|
|
|
|
void delete_word(void) {
|
|
if (!env->lines[env->line_no-1]) return;
|
|
if (env->col_no > 1) {
|
|
|
|
do {
|
|
if (env->col_no > 1) {
|
|
line_delete(env->lines[env->line_no - 1], env->col_no - 1, env->line_no - 1);
|
|
env->col_no -= 1;
|
|
if (env->coffset > 0) env->coffset--;
|
|
}
|
|
} while (env->col_no > 1 && env->lines[env->line_no - 1]->text[env->col_no - 2].codepoint != ' ');
|
|
|
|
redraw_text();
|
|
set_modified();
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Break the current line in two at the current cursor position.
|
|
*/
|
|
void insert_line_feed(void) {
|
|
if (env->col_no == env->lines[env->line_no - 1]->actual + 1) {
|
|
env->lines = add_line(env->lines, env->line_no);
|
|
} else {
|
|
env->lines = split_line(env->lines, env->line_no-1, env->col_no - 1);
|
|
}
|
|
env->col_no = 1;
|
|
env->line_no += 1;
|
|
add_indent(env->line_no-1,env->line_no-2);
|
|
if (env->line_no > env->offset + global_config.term_height - global_config.bottom_size - 1) {
|
|
env->offset += 1;
|
|
}
|
|
set_modified();
|
|
}
|
|
|
|
/**
|
|
* Yank lines between line start and line end (which may be in either order)
|
|
*/
|
|
void yank_lines(int start, int end) {
|
|
if (global_config.yanks) {
|
|
for (unsigned int i = 0; i < global_config.yank_count; ++i) {
|
|
free(global_config.yanks[i]);
|
|
}
|
|
free(global_config.yanks);
|
|
}
|
|
int lines_to_yank;
|
|
int start_point;
|
|
if (start <= end) {
|
|
lines_to_yank = end - start + 1;
|
|
start_point = start - 1;
|
|
} else {
|
|
lines_to_yank = start - end + 1;
|
|
start_point = end - 1;
|
|
}
|
|
global_config.yanks = malloc(sizeof(line_t *) * lines_to_yank);
|
|
global_config.yank_count = lines_to_yank;
|
|
global_config.yank_is_full_lines = 1;
|
|
for (int i = 0; i < lines_to_yank; ++i) {
|
|
global_config.yanks[i] = malloc(sizeof(line_t) + sizeof(char_t) * (env->lines[start_point+i]->available));
|
|
global_config.yanks[i]->available = env->lines[start_point+i]->available;
|
|
global_config.yanks[i]->actual = env->lines[start_point+i]->actual;
|
|
global_config.yanks[i]->istate = 0;
|
|
memcpy(&global_config.yanks[i]->text, &env->lines[start_point+i]->text, sizeof(char_t) * (env->lines[start_point+i]->actual));
|
|
|
|
for (int j = 0; j < global_config.yanks[i]->actual; ++j) {
|
|
global_config.yanks[i]->text[j].flags = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper to yank part of a line into a new yank line.
|
|
*/
|
|
void yank_partial_line(int yank_no, int line_no, int start_off, int count) {
|
|
global_config.yanks[yank_no] = malloc(sizeof(line_t) + sizeof(char_t) * (count + 1));
|
|
global_config.yanks[yank_no]->available = count + 1; /* ensure extra space */
|
|
global_config.yanks[yank_no]->actual = count;
|
|
global_config.yanks[yank_no]->istate = 0;
|
|
memcpy(&global_config.yanks[yank_no]->text, &env->lines[line_no]->text[start_off], sizeof(char_t) * count);
|
|
for (int i = 0; i < count; ++i) {
|
|
global_config.yanks[yank_no]->text[i].flags = 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Yank text...
|
|
*/
|
|
void yank_text(int start_line, int start_col, int end_line, int end_col) {
|
|
if (global_config.yanks) {
|
|
for (unsigned int i = 0; i < global_config.yank_count; ++i) {
|
|
free(global_config.yanks[i]);
|
|
}
|
|
free(global_config.yanks);
|
|
}
|
|
int lines_to_yank = end_line - start_line + 1;
|
|
int start_point = start_line - 1;
|
|
global_config.yanks = malloc(sizeof(line_t *) * lines_to_yank);
|
|
global_config.yank_count = lines_to_yank;
|
|
global_config.yank_is_full_lines = 0;
|
|
if (lines_to_yank == 1) {
|
|
yank_partial_line(0, start_point, start_col - 1, (end_col - start_col + 1));
|
|
} else {
|
|
yank_partial_line(0, start_point, start_col - 1, (env->lines[start_point]->actual - start_col + 1));
|
|
/* Yank middle lines */
|
|
for (int i = 1; i < lines_to_yank - 1; ++i) {
|
|
global_config.yanks[i] = malloc(sizeof(line_t) + sizeof(char_t) * (env->lines[start_point+i]->available));
|
|
global_config.yanks[i]->available = env->lines[start_point+i]->available;
|
|
global_config.yanks[i]->actual = env->lines[start_point+i]->actual;
|
|
global_config.yanks[i]->istate = 0;
|
|
memcpy(&global_config.yanks[i]->text, &env->lines[start_point+i]->text, sizeof(char_t) * (env->lines[start_point+i]->actual));
|
|
|
|
for (int j = 0; j < global_config.yanks[i]->actual; ++j) {
|
|
global_config.yanks[i]->text[j].flags = 0;
|
|
}
|
|
}
|
|
/* Yank end line */
|
|
yank_partial_line(lines_to_yank-1, end_line - 1, 0, end_col);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handle shared escape keys (mostly navigation)
|
|
*/
|
|
int handle_escape(int * this_buf, int * timeout, int c) {
|
|
if (*timeout >= 1 && this_buf[*timeout-1] == '\033' && c == '\033') {
|
|
this_buf[*timeout] = c;
|
|
(*timeout)++;
|
|
return 1;
|
|
}
|
|
if (*timeout >= 1 && this_buf[*timeout-1] == '\033' && c != '[') {
|
|
*timeout = 0;
|
|
bim_unget(c);
|
|
return 1;
|
|
}
|
|
if (*timeout >= 1 && this_buf[*timeout-1] == '\033' && c == '[') {
|
|
*timeout = 1;
|
|
this_buf[*timeout] = c;
|
|
(*timeout)++;
|
|
return 0;
|
|
}
|
|
if (*timeout >= 2 && this_buf[0] == '\033' && this_buf[1] == '[' &&
|
|
(isdigit(c) || c == ';')) {
|
|
this_buf[*timeout] = c;
|
|
(*timeout)++;
|
|
return 0;
|
|
}
|
|
if (*timeout >= 2 && this_buf[0] == '\033' && this_buf[1] == '[') {
|
|
switch (c) {
|
|
case 'M':
|
|
handle_mouse();
|
|
break;
|
|
case 'A': // up
|
|
cursor_up();
|
|
break;
|
|
case 'B': // down
|
|
cursor_down();
|
|
break;
|
|
case 'C': // right
|
|
if (this_buf[*timeout-1] == '5') {
|
|
word_right();
|
|
} else {
|
|
cursor_right();
|
|
}
|
|
break;
|
|
case 'D': // left
|
|
if (this_buf[*timeout-1] == '5') {
|
|
word_left();
|
|
} else {
|
|
cursor_left();
|
|
}
|
|
break;
|
|
case 'H': // home
|
|
cursor_home();
|
|
break;
|
|
case 'F': // end
|
|
cursor_end();
|
|
break;
|
|
case 'I':
|
|
goto_line(env->line_no - (global_config.term_height - 6));
|
|
break;
|
|
case 'G':
|
|
goto_line(env->line_no + global_config.term_height - 6);
|
|
break;
|
|
case 'Z':
|
|
/* Shift tab */
|
|
if (env->mode == MODE_LINE_SELECTION) {
|
|
*timeout = 0;
|
|
return 'Z';
|
|
}
|
|
break;
|
|
case '~':
|
|
switch (this_buf[*timeout-1]) {
|
|
case '1':
|
|
cursor_home();
|
|
break;
|
|
case '3':
|
|
if (env->mode == MODE_INSERT || env->mode == MODE_REPLACE) {
|
|
if (env->col_no < env->lines[env->line_no - 1]->actual + 1) {
|
|
line_delete(env->lines[env->line_no - 1], env->col_no, env->line_no - 1);
|
|
redraw_line(env->line_no - env->offset - 1, env->line_no-1);
|
|
set_modified();
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
} else if (env->line_no < env->line_count) {
|
|
merge_lines(env->lines, env->line_no);
|
|
redraw_text();
|
|
set_modified();
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
}
|
|
}
|
|
break;
|
|
case '4':
|
|
cursor_end();
|
|
break;
|
|
case '5':
|
|
goto_line(env->line_no - (global_config.term_height - 6));
|
|
break;
|
|
case '6':
|
|
goto_line(env->line_no + global_config.term_height - 6);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
render_error("Unrecognized escape sequence identifier: %c", c);
|
|
break;
|
|
}
|
|
*timeout = 0;
|
|
return 0;
|
|
}
|
|
|
|
*timeout = 0;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Standard navigation shared by normal, line, and char selection.
|
|
*/
|
|
void handle_navigation(int c) {
|
|
switch (c) {
|
|
case ':': /* Switch to command mode */
|
|
command_mode();
|
|
break;
|
|
case '/': /* Switch to search mode */
|
|
search_mode(1);
|
|
break;
|
|
case '?': /* Switch to search mode */
|
|
search_mode(0);
|
|
break;
|
|
case 'n': /* Jump to next search result */
|
|
search_next();
|
|
break;
|
|
case 'N': /* Jump backwards to previous search result */
|
|
search_prev();
|
|
break;
|
|
case 'j': /* Move cursor down */
|
|
cursor_down();
|
|
break;
|
|
case 'k': /* Move cursor up */
|
|
cursor_up();
|
|
break;
|
|
case 'h': /* Move cursor left */
|
|
cursor_left();
|
|
break;
|
|
case 'l': /* Move cursor right*/
|
|
cursor_right();
|
|
break;
|
|
case ' ': /* Jump forward several lines */
|
|
goto_line(env->line_no + global_config.term_height - 6);
|
|
break;
|
|
case '%': /* Jump to matching brace/bracket */
|
|
if (env->mode == MODE_LINE_SELECTION || env->mode == MODE_CHAR_SELECTION) {
|
|
/* These modes need to recalculate syntax as find_matching_brace uses it to find appropriate match */
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
}
|
|
find_matching_paren();
|
|
redraw_statusbar();
|
|
break;
|
|
case '{': /* Jump to previous blank line */
|
|
env->col_no = 1;
|
|
if (env->line_no == 1) break;
|
|
do {
|
|
env->line_no--;
|
|
if (env->lines[env->line_no-1]->actual == 0) break;
|
|
} while (env->line_no > 1);
|
|
redraw_statusbar();
|
|
break;
|
|
case '}': /* Jump to next blank line */
|
|
env->col_no = 1;
|
|
if (env->line_no == env->line_count) break;
|
|
do {
|
|
env->line_no++;
|
|
if (env->lines[env->line_no-1]->actual == 0) break;
|
|
} while (env->line_no < env->line_count);
|
|
redraw_statusbar();
|
|
break;
|
|
case '$': /* Move cursor to end of line */
|
|
cursor_end();
|
|
break;
|
|
case '^':
|
|
case '0': /* Move cursor to beginning of line */
|
|
cursor_home();
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Macro for redrawing selected lines with appropriate highlighting.
|
|
*/
|
|
#define _redraw_line(line, force_start_line) \
|
|
do { \
|
|
if (!(force_start_line) && (line) == start_line) break; \
|
|
if ((line) > env->line_count + 1) { \
|
|
if ((line) - env->offset - 1 < global_config.term_height - global_config.bottom_size - 1) { \
|
|
draw_excess_line((line) - env->offset - 1); \
|
|
} \
|
|
break; \
|
|
} \
|
|
if ((env->line_no < start_line && ((line) < env->line_no || (line) > start_line)) || \
|
|
(env->line_no > start_line && ((line) > env->line_no || (line) < start_line)) || \
|
|
(env->line_no == start_line && (line) != start_line)) { \
|
|
recalculate_syntax(env->lines[(line)-1],(line)-1); \
|
|
} else { \
|
|
for (int j = 0; j < env->lines[(line)-1]->actual; ++j) { \
|
|
env->lines[(line)-1]->text[j].flags = FLAG_SELECT; \
|
|
} \
|
|
} \
|
|
if ((line) - env->offset + 1 > 1 && \
|
|
(line) - env->offset - 1< global_config.term_height - global_config.bottom_size - 1) { \
|
|
redraw_line((line) - env->offset - 1, (line)-1); \
|
|
} \
|
|
} while (0)
|
|
|
|
/**
|
|
* Adjust indentation on selected lines.
|
|
*/
|
|
void adjust_indent(int start_line, int direction) {
|
|
int lines_to_cover = 0;
|
|
int start_point = 0;
|
|
if (start_line <= env->line_no) {
|
|
start_point = start_line - 1;
|
|
lines_to_cover = env->line_no - start_line + 1;
|
|
} else {
|
|
start_point = env->line_no - 1;
|
|
lines_to_cover = start_line - env->line_no + 1;
|
|
}
|
|
for (int i = 0; i < lines_to_cover; ++i) {
|
|
if ((direction == -1) && env->lines[start_point + i]->actual < 1) continue;
|
|
if (direction == -1) {
|
|
if (env->tabs) {
|
|
if (env->lines[start_point + i]->text[0].codepoint == '\t') {
|
|
line_delete(env->lines[start_point + i],1,start_point+i);
|
|
_redraw_line(start_point+i+1,1);
|
|
}
|
|
} else {
|
|
for (int j = 0; j < env->tabstop; ++j) {
|
|
if (env->lines[start_point + i]->text[0].codepoint == ' ') {
|
|
line_delete(env->lines[start_point + i],1,start_point+i);
|
|
}
|
|
}
|
|
_redraw_line(start_point+i+1,1);
|
|
}
|
|
} else if (direction == 1) {
|
|
if (env->tabs) {
|
|
char_t c;
|
|
c.codepoint = '\t';
|
|
c.display_width = env->tabstop;
|
|
c.flags = FLAG_SELECT;
|
|
env->lines[start_point + i] = line_insert(env->lines[start_point + i], c, 0, start_point + i);
|
|
} else {
|
|
for (int j = 0; j < env->tabstop; ++j) {
|
|
char_t c;
|
|
c.codepoint = ' ';
|
|
c.display_width = 1;
|
|
c.flags = FLAG_SELECT;
|
|
env->lines[start_point + i] = line_insert(env->lines[start_point + i], c, 0, start_point + i);
|
|
}
|
|
}
|
|
_redraw_line(start_point+i+1,1);
|
|
}
|
|
}
|
|
if (env->col_no > env->lines[env->line_no-1]->actual) {
|
|
env->col_no = env->lines[env->line_no-1]->actual;
|
|
}
|
|
set_modified();
|
|
}
|
|
|
|
/**
|
|
* LINE SELECTION mode
|
|
*
|
|
* Equivalent to visual line in vim; selects lines of texts.
|
|
*/
|
|
void line_selection_mode(void) {
|
|
int start_line = env->line_no;
|
|
int prev_line = start_line;
|
|
|
|
env->mode = MODE_LINE_SELECTION;
|
|
redraw_commandline();
|
|
|
|
int c;
|
|
int timeout = 0;
|
|
int this_buf[20];
|
|
|
|
for (int j = 0; j < env->lines[env->line_no-1]->actual; ++j) {
|
|
env->lines[env->line_no-1]->text[j].flags = FLAG_SELECT;
|
|
}
|
|
redraw_line(env->line_no - env->offset - 1, env->line_no-1);
|
|
|
|
while ((c = bim_getch())) {
|
|
if (c == -1) {
|
|
if (timeout && this_buf[timeout-1] == '\033') {
|
|
goto _leave_select_line;
|
|
}
|
|
timeout = 0;
|
|
continue;
|
|
} else {
|
|
if (timeout == 0) {
|
|
switch (c) {
|
|
case '\033':
|
|
if (timeout == 0) {
|
|
this_buf[timeout] = c;
|
|
timeout++;
|
|
}
|
|
break;
|
|
case DELETE_KEY:
|
|
case BACKSPACE_KEY:
|
|
cursor_left();
|
|
break;
|
|
case '\t':
|
|
if (env->readonly) goto _readonly;
|
|
adjust_indent(start_line, 1);
|
|
break;
|
|
case 'V':
|
|
goto _leave_select_line;
|
|
case 'y':
|
|
yank_lines(start_line, env->line_no);
|
|
goto _leave_select_line;
|
|
case 'D':
|
|
case 'd':
|
|
if (env->readonly) goto _readonly;
|
|
yank_lines(start_line, env->line_no);
|
|
if (start_line <= env->line_no) {
|
|
int lines_to_delete = env->line_no - start_line + 1;
|
|
for (int i = 0; i < lines_to_delete; ++i) {
|
|
remove_line(env->lines, start_line-1);
|
|
}
|
|
env->line_no = start_line;
|
|
} else {
|
|
int lines_to_delete = start_line - env->line_no + 1;
|
|
for (int i = 0; i < lines_to_delete; ++i) {
|
|
remove_line(env->lines, env->line_no-1);
|
|
}
|
|
}
|
|
if (env->line_no > env->line_count) {
|
|
env->line_no = env->line_count;
|
|
}
|
|
if (env->col_no > env->lines[env->line_no-1]->actual) {
|
|
env->col_no = env->lines[env->line_no-1]->actual;
|
|
}
|
|
set_modified();
|
|
goto _leave_select_line;
|
|
default:
|
|
handle_navigation(c);
|
|
break;
|
|
}
|
|
} else {
|
|
switch (handle_escape(this_buf,&timeout,c)) {
|
|
case 1:
|
|
bim_unget(c);
|
|
goto _leave_select_line;
|
|
case 'Z':
|
|
/* Unindent */
|
|
if (env->readonly) goto _readonly;
|
|
adjust_indent(start_line, -1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Mark current line */
|
|
_redraw_line(env->line_no,0);
|
|
|
|
/* Properly mark everything in the span we just moved through */
|
|
if (prev_line < env->line_no) {
|
|
for (int i = prev_line; i < env->line_no; ++i) {
|
|
_redraw_line(i,0);
|
|
}
|
|
prev_line = env->line_no;
|
|
} else if (prev_line > env->line_no) {
|
|
for (int i = env->line_no + 1; i <= prev_line; ++i) {
|
|
_redraw_line(i,0);
|
|
}
|
|
prev_line = env->line_no;
|
|
}
|
|
place_cursor_actual();
|
|
continue;
|
|
_readonly:
|
|
render_error("Buffer is read-only");
|
|
}
|
|
}
|
|
|
|
_leave_select_line:
|
|
set_history_break();
|
|
env->mode = MODE_NORMAL;
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
redraw_all();
|
|
}
|
|
|
|
/**
|
|
* Determine if a column + line number are within range of the
|
|
* current character selection specified by start_line, etc.
|
|
*
|
|
* Used to determine how syntax flags should be set when redrawing
|
|
* selected text in CHAR SELECTION mode.
|
|
*/
|
|
int point_in_range(int start_line, int end_line, int start_col, int end_col, int line, int col) {
|
|
if (start_line == end_line) {
|
|
if ( end_col < start_col) {
|
|
int tmp = end_col;
|
|
end_col = start_col;
|
|
start_col = tmp;
|
|
}
|
|
return (col >= start_col && col <= end_col);
|
|
}
|
|
|
|
if (start_line > end_line) {
|
|
int tmp = end_line;
|
|
end_line = start_line;
|
|
start_line = tmp;
|
|
|
|
tmp = end_col;
|
|
end_col = start_col;
|
|
start_col = tmp;
|
|
}
|
|
|
|
if (line < start_line || line > end_line) return 0;
|
|
|
|
if (line == start_line) {
|
|
return col >= start_col;
|
|
}
|
|
|
|
if (line == end_line) {
|
|
return col <= end_col;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
#define _redraw_line_char(line, force_start_line) \
|
|
do { \
|
|
if (!(force_start_line) && (line) == start_line) break; \
|
|
if ((line) > env->line_count + 1) { \
|
|
if ((line) - env->offset - 1 < global_config.term_height - global_config.bottom_size - 1) { \
|
|
draw_excess_line((line) - env->offset - 1); \
|
|
} \
|
|
break; \
|
|
} \
|
|
if ((env->line_no < start_line && ((line) < env->line_no || (line) > start_line)) || \
|
|
(env->line_no > start_line && ((line) > env->line_no || (line) < start_line)) || \
|
|
(env->line_no == start_line && (line) != start_line)) { \
|
|
/* Line is completely outside selection */ \
|
|
recalculate_syntax(env->lines[(line)-1],(line)-1); \
|
|
} else { \
|
|
if ((line) == start_line || (line) == env->line_no) { \
|
|
recalculate_syntax(env->lines[(line)-1],(line)-1); \
|
|
} \
|
|
for (int j = 0; j < env->lines[(line)-1]->actual; ++j) { \
|
|
if (point_in_range(start_line, env->line_no,start_col, env->col_no, (line), j+1)) { \
|
|
env->lines[(line)-1]->text[j].flags = FLAG_SELECT; \
|
|
} \
|
|
} \
|
|
} \
|
|
if ((line) - env->offset + 1 > 1 && \
|
|
(line) - env->offset - 1< global_config.term_height - global_config.bottom_size - 1) { \
|
|
redraw_line((line) - env->offset - 1, (line)-1); \
|
|
} \
|
|
} while (0)
|
|
|
|
/**
|
|
* CHAR SELECTION mode.
|
|
*/
|
|
void char_selection_mode(void) {
|
|
int start_line = env->line_no;
|
|
int start_col = env->col_no;
|
|
int prev_line = start_line;
|
|
|
|
env->mode = MODE_CHAR_SELECTION;
|
|
redraw_commandline();
|
|
|
|
int c;
|
|
int timeout = 0;
|
|
int this_buf[20];
|
|
|
|
/* Select single character */
|
|
env->lines[env->line_no-1]->text[env->col_no-1].flags = FLAG_SELECT;
|
|
redraw_line(env->line_no - env->offset - 1, env->line_no-1);
|
|
|
|
while ((c = bim_getch())) {
|
|
if (c == -1) {
|
|
if (timeout && this_buf[timeout-1] == '\033') {
|
|
goto _leave_select_char;
|
|
}
|
|
timeout = 0;
|
|
continue;
|
|
} else {
|
|
if (timeout == 0) {
|
|
switch (c) {
|
|
case '\033':
|
|
if (timeout == 0) {
|
|
this_buf[timeout] = c;
|
|
timeout++;
|
|
}
|
|
break;
|
|
case DELETE_KEY:
|
|
case BACKSPACE_KEY:
|
|
cursor_left();
|
|
break;
|
|
case 'v':
|
|
goto _leave_select_char;
|
|
case 'y':
|
|
{
|
|
int end_line = env->line_no;
|
|
int end_col = env->col_no;
|
|
if (start_line == end_line) {
|
|
if (start_col > end_col) {
|
|
int tmp = start_col;
|
|
start_col = end_col;
|
|
end_col = tmp;
|
|
}
|
|
} else if (start_line > end_line) {
|
|
int tmp = start_line;
|
|
start_line = end_line;
|
|
end_line = tmp;
|
|
tmp = start_col;
|
|
start_col = end_col;
|
|
end_col = tmp;
|
|
}
|
|
yank_text(start_line, start_col, end_line, end_col);
|
|
}
|
|
goto _leave_select_char;
|
|
case 'D':
|
|
case 'd':
|
|
if (env->readonly) goto _readonly;
|
|
{
|
|
int end_line = env->line_no;
|
|
int end_col = env->col_no;
|
|
if (start_line == end_line) {
|
|
if (start_col > end_col) {
|
|
int tmp = start_col;
|
|
start_col = end_col;
|
|
end_col = tmp;
|
|
}
|
|
yank_text(start_line, start_col, end_line, end_col);
|
|
for (int i = start_col; i <= end_col; ++i) {
|
|
line_delete(env->lines[start_line-1], start_col, start_line - 1);
|
|
}
|
|
env->col_no = start_col;
|
|
} else {
|
|
if (start_line > end_line) {
|
|
int tmp = start_line;
|
|
start_line = end_line;
|
|
end_line = tmp;
|
|
tmp = start_col;
|
|
start_col = end_col;
|
|
end_col = tmp;
|
|
}
|
|
/* Copy lines */
|
|
yank_text(start_line, start_col, end_line, end_col);
|
|
/* Delete lines */
|
|
for (int i = start_line+1; i < end_line; ++i) {
|
|
remove_line(env->lines, start_line);
|
|
} /* end_line is no longer valid; should be start_line+1*/
|
|
/* Delete from start_col forward */
|
|
int tmp = env->lines[start_line-1]->actual;
|
|
for (int i = start_col; i <= tmp; ++i) {
|
|
line_delete(env->lines[start_line-1], start_col, start_line - 1);
|
|
}
|
|
for (int i = 1; i <= end_col; ++i) {
|
|
line_delete(env->lines[start_line], 1, start_line);
|
|
}
|
|
/* Merge start and end lines */
|
|
merge_lines(env->lines, start_line);
|
|
env->line_no = start_line;
|
|
env->col_no = start_col;
|
|
}
|
|
}
|
|
if (env->line_no > env->line_count) {
|
|
env->line_no = env->line_count;
|
|
}
|
|
set_modified();
|
|
goto _leave_select_char;
|
|
default:
|
|
handle_navigation(c);
|
|
break;
|
|
}
|
|
} else {
|
|
switch (handle_escape(this_buf,&timeout,c)) {
|
|
case 1:
|
|
bim_unget(c);
|
|
goto _leave_select_char;
|
|
}
|
|
}
|
|
|
|
/* Mark current line */
|
|
_redraw_line_char(env->line_no,1);
|
|
|
|
/* Properly mark everything in the span we just moved through */
|
|
if (prev_line < env->line_no) {
|
|
for (int i = prev_line; i < env->line_no; ++i) {
|
|
_redraw_line_char(i,1);
|
|
}
|
|
prev_line = env->line_no;
|
|
} else if (prev_line > env->line_no) {
|
|
for (int i = env->line_no + 1; i <= prev_line; ++i) {
|
|
_redraw_line_char(i,1);
|
|
}
|
|
prev_line = env->line_no;
|
|
}
|
|
place_cursor_actual();
|
|
continue;
|
|
_readonly:
|
|
render_error("Buffer is read-only");
|
|
}
|
|
}
|
|
|
|
_leave_select_char:
|
|
set_history_break();
|
|
env->mode = MODE_NORMAL;
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
redraw_all();
|
|
}
|
|
|
|
/**
|
|
* INSERT mode
|
|
*
|
|
* Accept input into the text buffer.
|
|
*/
|
|
void insert_mode(void) {
|
|
int cin;
|
|
uint32_t c;
|
|
|
|
/* Set mode line */
|
|
env->mode = MODE_INSERT;
|
|
redraw_commandline();
|
|
|
|
/* Place the cursor in the text area */
|
|
place_cursor_actual();
|
|
|
|
int timeout = 0;
|
|
int this_buf[20];
|
|
uint32_t istate = 0;
|
|
int redraw = 0;
|
|
while ((cin = bim_getch_timeout((redraw ? 10 : 200)))) {
|
|
if (cin == -1) {
|
|
if (redraw) {
|
|
if (redraw & 2) {
|
|
redraw_text();
|
|
} else {
|
|
redraw_line(env->line_no - env->offset - 1, env->line_no-1);
|
|
}
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
redraw = 0;
|
|
}
|
|
if (timeout && this_buf[timeout-1] == '\033') {
|
|
leave_insert();
|
|
return;
|
|
}
|
|
timeout = 0;
|
|
continue;
|
|
}
|
|
if (!decode(&istate, &c, cin)) {
|
|
if (timeout == 0) {
|
|
switch (c) {
|
|
case '\033':
|
|
if (timeout == 0) {
|
|
this_buf[timeout] = c;
|
|
timeout++;
|
|
}
|
|
break;
|
|
case DELETE_KEY:
|
|
case BACKSPACE_KEY:
|
|
delete_at_cursor();
|
|
break;
|
|
case ENTER_KEY:
|
|
insert_line_feed();
|
|
redraw |= 2;
|
|
break;
|
|
case 22: /* ^V */
|
|
/* Insert next byte raw */
|
|
{
|
|
/* Indicate we're in literal mode */
|
|
render_commandline_message("^V");
|
|
/* Put the cursor back into the text field */
|
|
place_cursor_actual();
|
|
/* Get next character */
|
|
while ((cin = bim_getch()) == -1);
|
|
/* Insert literal */
|
|
insert_char(cin);
|
|
/* Redraw INSERT */
|
|
redraw_commandline();
|
|
/* Draw text */
|
|
redraw |= 1;
|
|
}
|
|
break;
|
|
case 23: /* ^W */
|
|
delete_word();
|
|
break;
|
|
case '\t':
|
|
if (env->tabs) {
|
|
insert_char('\t');
|
|
} else {
|
|
for (int i = 0; i < env->tabstop; ++i) {
|
|
insert_char(' ');
|
|
}
|
|
}
|
|
redraw |= 1;
|
|
break;
|
|
default:
|
|
insert_char(c);
|
|
redraw |= 1;
|
|
break;
|
|
}
|
|
} else {
|
|
if (handle_escape(this_buf,&timeout,c)) {
|
|
bim_unget(c);
|
|
leave_insert();
|
|
return;
|
|
}
|
|
}
|
|
} else if (istate == UTF8_REJECT) {
|
|
istate = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* REPLACE mode
|
|
*
|
|
* Like insert, but replaces characters.
|
|
*/
|
|
void replace_mode(void) {
|
|
int cin;
|
|
uint32_t c;
|
|
|
|
/* Set mode line */
|
|
env->mode = MODE_REPLACE;
|
|
redraw_commandline();
|
|
|
|
/* Place the cursor in the text area */
|
|
place_cursor_actual();
|
|
|
|
int timeout = 0;
|
|
int this_buf[20];
|
|
uint32_t istate = 0;
|
|
while ((cin = bim_getch())) {
|
|
if (cin == -1) {
|
|
if (timeout && this_buf[timeout-1] == '\033') {
|
|
leave_insert();
|
|
return;
|
|
}
|
|
timeout = 0;
|
|
continue;
|
|
}
|
|
if (!decode(&istate, &c, cin)) {
|
|
if (timeout == 0) {
|
|
switch (c) {
|
|
case '\033':
|
|
if (timeout == 0) {
|
|
this_buf[timeout] = c;
|
|
timeout++;
|
|
}
|
|
break;
|
|
case DELETE_KEY:
|
|
case BACKSPACE_KEY:
|
|
if (env->line_no > 1 && env->col_no == 1) {
|
|
env->line_no--;
|
|
env->col_no = env->lines[env->line_no-1]->actual;
|
|
place_cursor_actual();
|
|
} else {
|
|
cursor_left();
|
|
}
|
|
break;
|
|
case ENTER_KEY:
|
|
insert_line_feed();
|
|
redraw_text();
|
|
set_modified();
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
break;
|
|
default:
|
|
if (env->col_no <= env->lines[env->line_no - 1]->actual) {
|
|
replace_char(c);
|
|
env->col_no += 1;
|
|
} else {
|
|
insert_char(c);
|
|
redraw_line(env->line_no - env->offset - 1, env->line_no-1);
|
|
}
|
|
redraw_statusbar();
|
|
place_cursor_actual();
|
|
break;
|
|
}
|
|
} else {
|
|
if (handle_escape(this_buf,&timeout,c)) {
|
|
bim_unget(c);
|
|
leave_insert();
|
|
return;
|
|
}
|
|
}
|
|
} else if (istate == UTF8_REJECT) {
|
|
istate = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* NORMAL mode
|
|
*
|
|
* Default editor mode - just cursor navigation and keybinds
|
|
* to enter the other modes.
|
|
*/
|
|
void normal_mode(void) {
|
|
|
|
while (1) {
|
|
place_cursor_actual();
|
|
int c;
|
|
int timeout = 0;
|
|
int this_buf[20];
|
|
while ((c = bim_getch())) {
|
|
if (c == -1) {
|
|
/* getch timed out, nothing to do in normal mode */
|
|
continue;
|
|
}
|
|
if (timeout == 0) {
|
|
switch (c) {
|
|
case '\033':
|
|
if (timeout == 0) {
|
|
this_buf[timeout] = c;
|
|
timeout++;
|
|
}
|
|
break;
|
|
case DELETE_KEY:
|
|
case BACKSPACE_KEY:
|
|
if (env->line_no > 1 && env->col_no == 1) {
|
|
env->line_no--;
|
|
env->col_no = env->lines[env->line_no-1]->actual;
|
|
place_cursor_actual();
|
|
} else {
|
|
cursor_left();
|
|
}
|
|
break;
|
|
case 'V': /* Enter LINE SELECTION mode */
|
|
line_selection_mode();
|
|
break;
|
|
case 'v': /* Enter CHAR SELECTION mode */
|
|
char_selection_mode();
|
|
break;
|
|
case 'O': /* Append line before and enter INSERT mode */
|
|
{
|
|
if (env->readonly) goto _readonly;
|
|
env->lines = add_line(env->lines, env->line_no-1);
|
|
env->col_no = 1;
|
|
add_indent(env->line_no-1,env->line_no);
|
|
redraw_text();
|
|
set_modified();
|
|
place_cursor_actual();
|
|
goto _insert;
|
|
}
|
|
case 'o': /* Append line after and enter INSERT mode */
|
|
{
|
|
if (env->readonly) goto _readonly;
|
|
env->lines = add_line(env->lines, env->line_no);
|
|
env->col_no = 1;
|
|
env->line_no += 1;
|
|
add_indent(env->line_no-1,env->line_no-2);
|
|
if (env->line_no > env->offset + global_config.term_height - global_config.bottom_size - 1) {
|
|
env->offset += 1;
|
|
}
|
|
redraw_text();
|
|
set_modified();
|
|
place_cursor_actual();
|
|
goto _insert;
|
|
}
|
|
case 'a': /* Enter INSERT mode with cursor after current position */
|
|
if (env->col_no < env->lines[env->line_no-1]->actual + 1) {
|
|
env->col_no += 1;
|
|
}
|
|
goto _insert;
|
|
case 'P': /* Paste before */
|
|
case 'p': /* Paste after */
|
|
if (env->readonly) goto _readonly;
|
|
if (global_config.yanks) {
|
|
if (!global_config.yank_is_full_lines) {
|
|
/* Handle P for paste before, p for past after */
|
|
int target_column = (c == 'P' ? (env->col_no) : (env->col_no+1));
|
|
if (target_column > env->lines[env->line_no-1]->actual + 1) {
|
|
target_column = env->lines[env->line_no-1]->actual + 1;
|
|
}
|
|
if (global_config.yank_count > 1) {
|
|
/* Spit the current line at the current position */
|
|
env->lines = split_line(env->lines, env->line_no - 1, target_column - 1); /* Split after */
|
|
}
|
|
/* Insert first line at current position */
|
|
for (int i = 0; i < global_config.yanks[0]->actual; ++i) {
|
|
env->lines[env->line_no - 1] = line_insert(env->lines[env->line_no - 1], global_config.yanks[0]->text[i], target_column + i - 1, env->line_no - 1);
|
|
}
|
|
if (global_config.yank_count > 1) {
|
|
/* Insert full lines */
|
|
for (unsigned int i = 1; i < global_config.yank_count - 1; ++i) {
|
|
env->lines = add_line(env->lines, env->line_no);
|
|
}
|
|
for (unsigned int i = 1; i < global_config.yank_count - 1; ++i) {
|
|
replace_line(env->lines, env->line_no + i - 1, global_config.yanks[i]);
|
|
}
|
|
/* Insert characters from last line into (what was) the next line */
|
|
for (int i = 0; i < global_config.yanks[global_config.yank_count-1]->actual; ++i) {
|
|
env->lines[env->line_no + global_config.yank_count - 2] = line_insert(env->lines[env->line_no + global_config.yank_count - 2], global_config.yanks[global_config.yank_count-1]->text[i], i, env->line_no + global_config.yank_count - 2);
|
|
}
|
|
}
|
|
} else {
|
|
/* Insert full lines */
|
|
for (unsigned int i = 0; i < global_config.yank_count; ++i) {
|
|
env->lines = add_line(env->lines, env->line_no - (c == 'P' ? 1 : 0));
|
|
}
|
|
for (unsigned int i = 0; i < global_config.yank_count; ++i) {
|
|
replace_line(env->lines, env->line_no - (c == 'P' ? 1 : 0) + i, global_config.yanks[i]);
|
|
}
|
|
}
|
|
/* Recalculate whole document syntax */
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
env->lines[i]->istate = 0;
|
|
}
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
recalculate_syntax(env->lines[i],i);
|
|
}
|
|
set_history_break();
|
|
set_modified();
|
|
redraw_all();
|
|
}
|
|
break;
|
|
case 'u': /* Undo one block of history */
|
|
undo_history();
|
|
break;
|
|
case 18: /* ^R - Redo one block of history */
|
|
redo_history();
|
|
break;
|
|
case 12: /* ^L - Repaint the whole screen */
|
|
redraw_all();
|
|
break;
|
|
case 'i': /* Enter INSERT mode */
|
|
_insert:
|
|
if (env->readonly) goto _readonly;
|
|
insert_mode();
|
|
redraw_statusbar();
|
|
redraw_commandline();
|
|
timeout = 0;
|
|
break;
|
|
case 'R': /* Enter REPLACE mode */
|
|
if (env->readonly) goto _readonly;
|
|
replace_mode();
|
|
redraw_statusbar();
|
|
redraw_commandline();
|
|
timeout = 0;
|
|
break;
|
|
_readonly:
|
|
render_error("Buffer is read-only");
|
|
break;
|
|
default:
|
|
handle_navigation(c);
|
|
break;
|
|
}
|
|
} else {
|
|
handle_escape(this_buf,&timeout,c);
|
|
}
|
|
place_cursor_actual();
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Show help text for -?
|
|
*/
|
|
static void show_usage(char * argv[]) {
|
|
#define _S "\033[3m"
|
|
#define _E "\033[0m\n"
|
|
printf(
|
|
"bim - Text editor\n"
|
|
"\n"
|
|
"usage: %s [options] [file]\n"
|
|
" %s [options] -- -\n"
|
|
"\n"
|
|
" -R " _S "open initial buffer read-only" _E
|
|
" -O " _S "set various options:" _E
|
|
" noscroll " _S "disable terminal scrolling" _E
|
|
" noaltscreen " _S "disable alternate screen buffer" _E
|
|
" nomouse " _S "disable mouse support" _E
|
|
" nounicode " _S "disable unicode display" _E
|
|
" nobright " _S "disable bright next" _E
|
|
" nohideshow " _S "disable togglging cursor visibility" _E
|
|
" nosyntax " _S "disable syntax highlighting on load" _E
|
|
" notitle " _S "disable title-setting escapes" _E
|
|
" history " _S "enable experimental undo/redo" _E
|
|
" -c,-C " _S "print file to stdout with syntax hilighting" _E
|
|
" " _S "-C includes line numbers, -c does not" _E
|
|
" -u " _S "override bimrc file" _E
|
|
" -? " _S "show this help text" _E
|
|
"\n", argv[0], argv[0]);
|
|
#undef _E
|
|
#undef _S
|
|
}
|
|
|
|
/**
|
|
* Load bimrc configuration file.
|
|
*
|
|
* At the moment, this a simple key=value list.
|
|
*/
|
|
void load_bimrc(void) {
|
|
if (!global_config.bimrc_path) return;
|
|
|
|
/* Default is ~/.bimrc */
|
|
char * tmp = strdup(global_config.bimrc_path);
|
|
|
|
if (!*tmp) {
|
|
free(tmp);
|
|
return;
|
|
}
|
|
|
|
/* Parse ~ at the front of the path. */
|
|
if (*tmp == '~') {
|
|
char path[1024] = {0};
|
|
char * home = getenv("HOME");
|
|
if (!home) {
|
|
/* $HOME is unset? */
|
|
free(tmp);
|
|
return;
|
|
}
|
|
|
|
/* New path is $HOME/.bimrc */
|
|
snprintf(path, 1024, "%s%s", home, tmp+1);
|
|
free(tmp);
|
|
tmp = strdup(path);
|
|
}
|
|
|
|
/* Try to open the file */
|
|
FILE * bimrc = fopen(tmp, "r");
|
|
|
|
if (!bimrc) {
|
|
/* No bimrc, or bad permissions */
|
|
free(tmp);
|
|
return;
|
|
}
|
|
|
|
/* Parse through lines */
|
|
char line[1024];
|
|
while (!feof(bimrc)) {
|
|
char * l = fgets(line, 1023, bimrc);
|
|
|
|
/* Ignore bad lines */
|
|
if (!l) break;
|
|
if (!*l) continue;
|
|
if (*l == '\n') continue;
|
|
|
|
/* Ignore comment lines */
|
|
if (*l == '#') continue;
|
|
|
|
/* Remove linefeed at the end */
|
|
char *nl = strstr(l,"\n");
|
|
if (nl) *nl = '\0';
|
|
|
|
/* Extract value from keypair, if available
|
|
* (I foresee options without values in the future) */
|
|
char *value= strstr(l,"=");
|
|
if (value) {
|
|
*value = '\0';
|
|
value++;
|
|
}
|
|
|
|
/* theme=... */
|
|
if (!strcmp(l,"theme") && value) {
|
|
/* Examine available themes for a match. */
|
|
for (struct theme_def * d = themes; d->name; ++d) {
|
|
if (!strcmp(value, d->name)) {
|
|
d->load();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* enable history (experimental) */
|
|
if (!strcmp(l,"history")) {
|
|
global_config.history_enabled = 1;
|
|
}
|
|
|
|
/* padding= */
|
|
if (!strcmp(l,"padding") && value) {
|
|
global_config.cursor_padding = atoi(value);
|
|
}
|
|
}
|
|
|
|
fclose(bimrc);
|
|
}
|
|
|
|
/**
|
|
* Set some default values when certain terminals are detected.
|
|
*/
|
|
void detect_weird_terminals(void) {
|
|
|
|
char * term = getenv("TERM");
|
|
if (term && !strcmp(term,"linux")) {
|
|
/* Linux VTs can't scroll. */
|
|
global_config.can_scroll = 0;
|
|
}
|
|
if (term && !strcmp(term,"cons25")) {
|
|
/* Dragonfly BSD console */
|
|
global_config.can_hideshow = 0;
|
|
global_config.can_altscreen = 0;
|
|
global_config.can_mouse = 0;
|
|
global_config.can_unicode = 0;
|
|
global_config.can_bright = 0;
|
|
}
|
|
if (term && !strcmp(term,"sortix")) {
|
|
/* sortix will spew title escapes to the screen, no good */
|
|
global_config.can_title = 0;
|
|
}
|
|
if (term && strstr(term,"tmux") == term) {
|
|
global_config.can_scroll = 0;
|
|
global_config.can_bce = 0;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Run global initialization tasks
|
|
*/
|
|
void initialize(void) {
|
|
setlocale(LC_ALL, "");
|
|
|
|
detect_weird_terminals();
|
|
load_colorscheme_ansi();
|
|
load_bimrc();
|
|
|
|
buffers_avail = 4;
|
|
buffers = malloc(sizeof(buffer_t *) * buffers_avail);
|
|
}
|
|
|
|
/**
|
|
* Initialize terminal for editor display.
|
|
*/
|
|
void init_terminal(void) {
|
|
set_alternate_screen();
|
|
update_screen_size();
|
|
get_initial_termios();
|
|
set_unbuffered();
|
|
mouse_enable();
|
|
|
|
signal(SIGWINCH, SIGWINCH_handler);
|
|
signal(SIGCONT, SIGCONT_handler);
|
|
signal(SIGTSTP, SIGTSTP_handler);
|
|
}
|
|
|
|
int main(int argc, char * argv[]) {
|
|
int opt;
|
|
while ((opt = getopt(argc, argv, "?c:C:u:RO:-:")) != -1) {
|
|
switch (opt) {
|
|
case 'R':
|
|
global_config.initial_file_is_read_only = 1;
|
|
break;
|
|
case 'c':
|
|
case 'C':
|
|
/* Print file to stdout using our syntax highlighting and color theme */
|
|
initialize();
|
|
open_file(optarg);
|
|
for (int i = 0; i < env->line_count; ++i) {
|
|
if (opt == 'C') {
|
|
draw_line_number(i);
|
|
}
|
|
render_line(env->lines[i], 6 * (env->lines[i]->actual + 1), 0);
|
|
reset();
|
|
fprintf(stdout, "\n");
|
|
}
|
|
return 0;
|
|
case 'u':
|
|
global_config.bimrc_path = optarg;
|
|
break;
|
|
case 'O':
|
|
/* Set various display options */
|
|
if (!strcmp(optarg,"noaltscreen")) global_config.can_altscreen = 0;
|
|
else if (!strcmp(optarg,"noscroll")) global_config.can_scroll = 0;
|
|
else if (!strcmp(optarg,"nomouse")) global_config.can_mouse = 0;
|
|
else if (!strcmp(optarg,"nounicode")) global_config.can_unicode = 0;
|
|
else if (!strcmp(optarg,"nobright")) global_config.can_bright = 0;
|
|
else if (!strcmp(optarg,"nohideshow")) global_config.can_hideshow = 0;
|
|
else if (!strcmp(optarg,"nosyntax")) global_config.hilight_on_open = 0;
|
|
else if (!strcmp(optarg,"nohistory")) global_config.history_enabled = 0;
|
|
else if (!strcmp(optarg,"notitle")) global_config.can_title = 0;
|
|
else if (!strcmp(optarg,"nobce")) global_config.can_bce = 0;
|
|
else {
|
|
fprintf(stderr, "%s: unrecognized -O option: %s\n", argv[0], optarg);
|
|
return 1;
|
|
}
|
|
break;
|
|
case '-':
|
|
if (!strcmp(optarg,"version")) {
|
|
fprintf(stderr, "bim %s %s\n", BIM_VERSION, BIM_COPYRIGHT);
|
|
fprintf(stderr, " Available syntax highlighters:");
|
|
for (struct syntax_definition * s = syntaxes; s->name; ++s) {
|
|
fprintf(stderr, " %s", s->name);
|
|
}
|
|
fprintf(stderr, "\n");
|
|
fprintf(stderr, " Available color themes:");
|
|
for (struct theme_def * d = themes; d->name; ++d) {
|
|
fprintf(stderr, " %s", d->name);
|
|
}
|
|
fprintf(stderr, "\n");
|
|
return 0;
|
|
}
|
|
break;
|
|
case '?':
|
|
show_usage(argv);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Set up terminal */
|
|
initialize();
|
|
init_terminal();
|
|
|
|
/* Open file */
|
|
if (argc > optind) {
|
|
open_file(argv[optind]);
|
|
update_title();
|
|
goto_line(0);
|
|
if (global_config.initial_file_is_read_only) {
|
|
env->readonly = 1;
|
|
}
|
|
} else {
|
|
env = buffer_new();
|
|
update_title();
|
|
setup_buffer(env);
|
|
}
|
|
|
|
/* Draw the screen once */
|
|
redraw_all();
|
|
|
|
/* Start accepting key commands */
|
|
normal_mode();
|
|
|
|
return 0;
|
|
}
|