Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 1 | /* vi: set sw=8 ts=8: */ |
| 2 | /* |
| 3 | * tiny vi.c: A small 'vi' clone |
| 4 | * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | |
Eric Andersen | 044228d | 2001-07-17 01:12:36 +0000 | [diff] [blame] | 21 | static const char vi_Version[] = |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame^] | 22 | "$Id: vi.c,v 1.36 2004/04/14 17:51:09 andersen Exp $"; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 23 | |
| 24 | /* |
| 25 | * To compile for standalone use: |
Eric Andersen | d402edf | 2001-04-04 19:29:48 +0000 | [diff] [blame] | 26 | * gcc -Wall -Os -s -DSTANDALONE -o vi vi.c |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 27 | * or |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 28 | * gcc -Wall -Os -s -DSTANDALONE -DCONFIG_FEATURE_VI_CRASHME -o vi vi.c # include testing features |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 29 | * strip vi |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * Things To Do: |
| 34 | * EXINIT |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 35 | * $HOME/.exrc and ./.exrc |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 36 | * add magic to search /foo.*bar |
| 37 | * add :help command |
| 38 | * :map macros |
| 39 | * how about mode lines: vi: set sw=8 ts=8: |
| 40 | * if mark[] values were line numbers rather than pointers |
| 41 | * it would be easier to change the mark when add/delete lines |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 42 | * More intelligence in refresh() |
| 43 | * ":r !cmd" and "!cmd" to filter text through an external command |
| 44 | * A true "undo" facility |
| 45 | * An "ex" line oriented mode- maybe using "cmdedit" |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 46 | */ |
| 47 | |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame^] | 48 | //---- Feature -------------- Bytes to implement |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 49 | #ifdef STANDALONE |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 50 | #define vi_main main |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 51 | #define CONFIG_FEATURE_VI_COLON // 4288 |
| 52 | #define CONFIG_FEATURE_VI_YANKMARK // 1408 |
| 53 | #define CONFIG_FEATURE_VI_SEARCH // 1088 |
| 54 | #define CONFIG_FEATURE_VI_USE_SIGNALS // 1056 |
| 55 | #define CONFIG_FEATURE_VI_DOT_CMD // 576 |
| 56 | #define CONFIG_FEATURE_VI_READONLY // 128 |
| 57 | #define CONFIG_FEATURE_VI_SETOPTS // 576 |
| 58 | #define CONFIG_FEATURE_VI_SET // 224 |
| 59 | #define CONFIG_FEATURE_VI_WIN_RESIZE // 256 WIN_RESIZE |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 60 | // To test editor using CRASHME: |
| 61 | // vi -C filename |
| 62 | // To stop testing, wait until all to text[] is deleted, or |
| 63 | // Ctrl-Z and kill -9 %1 |
| 64 | // while in the editor Ctrl-T will toggle the crashme function on and off. |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 65 | //#define CONFIG_FEATURE_VI_CRASHME // randomly pick commands to execute |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 66 | #endif /* STANDALONE */ |
| 67 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 68 | #include <stdio.h> |
| 69 | #include <stdlib.h> |
| 70 | #include <string.h> |
| 71 | #include <termios.h> |
| 72 | #include <unistd.h> |
| 73 | #include <sys/ioctl.h> |
| 74 | #include <sys/time.h> |
| 75 | #include <sys/types.h> |
| 76 | #include <sys/stat.h> |
| 77 | #include <time.h> |
| 78 | #include <fcntl.h> |
| 79 | #include <signal.h> |
| 80 | #include <setjmp.h> |
| 81 | #include <regex.h> |
| 82 | #include <ctype.h> |
| 83 | #include <assert.h> |
| 84 | #include <errno.h> |
| 85 | #include <stdarg.h> |
Eric Andersen | e0c0757 | 2001-06-23 13:49:14 +0000 | [diff] [blame] | 86 | #ifndef STANDALONE |
| 87 | #include "busybox.h" |
| 88 | #endif /* STANDALONE */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 89 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 90 | #ifdef CONFIG_LOCALE_SUPPORT |
| 91 | #define Isprint(c) isprint((c)) |
| 92 | #else |
| 93 | #define Isprint(c) ( (c) >= ' ' && (c) != 127 && (c) != ((unsigned char)'\233') ) |
| 94 | #endif |
| 95 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 96 | #ifndef TRUE |
| 97 | #define TRUE ((int)1) |
| 98 | #define FALSE ((int)0) |
| 99 | #endif /* TRUE */ |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 100 | #define MAX_SCR_COLS BUFSIZ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 101 | |
| 102 | // Misc. non-Ascii keys that report an escape sequence |
| 103 | #define VI_K_UP 128 // cursor key Up |
| 104 | #define VI_K_DOWN 129 // cursor key Down |
| 105 | #define VI_K_RIGHT 130 // Cursor Key Right |
| 106 | #define VI_K_LEFT 131 // cursor key Left |
| 107 | #define VI_K_HOME 132 // Cursor Key Home |
| 108 | #define VI_K_END 133 // Cursor Key End |
| 109 | #define VI_K_INSERT 134 // Cursor Key Insert |
| 110 | #define VI_K_PAGEUP 135 // Cursor Key Page Up |
| 111 | #define VI_K_PAGEDOWN 136 // Cursor Key Page Down |
| 112 | #define VI_K_FUN1 137 // Function Key F1 |
| 113 | #define VI_K_FUN2 138 // Function Key F2 |
| 114 | #define VI_K_FUN3 139 // Function Key F3 |
| 115 | #define VI_K_FUN4 140 // Function Key F4 |
| 116 | #define VI_K_FUN5 141 // Function Key F5 |
| 117 | #define VI_K_FUN6 142 // Function Key F6 |
| 118 | #define VI_K_FUN7 143 // Function Key F7 |
| 119 | #define VI_K_FUN8 144 // Function Key F8 |
| 120 | #define VI_K_FUN9 145 // Function Key F9 |
| 121 | #define VI_K_FUN10 146 // Function Key F10 |
| 122 | #define VI_K_FUN11 147 // Function Key F11 |
| 123 | #define VI_K_FUN12 148 // Function Key F12 |
| 124 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 125 | /* vt102 typical ESC sequence */ |
| 126 | /* terminal standout start/normal ESC sequence */ |
| 127 | static const char SOs[] = "\033[7m"; |
| 128 | static const char SOn[] = "\033[0m"; |
| 129 | /* terminal bell sequence */ |
| 130 | static const char bell[] = "\007"; |
| 131 | /* Clear-end-of-line and Clear-end-of-screen ESC sequence */ |
| 132 | static const char Ceol[] = "\033[0K"; |
| 133 | static const char Ceos [] = "\033[0J"; |
| 134 | /* Cursor motion arbitrary destination ESC sequence */ |
| 135 | static const char CMrc[] = "\033[%d;%dH"; |
| 136 | /* Cursor motion up and down ESC sequence */ |
| 137 | static const char CMup[] = "\033[A"; |
| 138 | static const char CMdown[] = "\n"; |
| 139 | |
| 140 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 141 | static const int YANKONLY = FALSE; |
| 142 | static const int YANKDEL = TRUE; |
| 143 | static const int FORWARD = 1; // code depends on "1" for array index |
| 144 | static const int BACK = -1; // code depends on "-1" for array index |
| 145 | static const int LIMITED = 0; // how much of text[] in char_search |
| 146 | static const int FULL = 1; // how much of text[] in char_search |
| 147 | |
| 148 | static const int S_BEFORE_WS = 1; // used in skip_thing() for moving "dot" |
| 149 | static const int S_TO_WS = 2; // used in skip_thing() for moving "dot" |
| 150 | static const int S_OVER_WS = 3; // used in skip_thing() for moving "dot" |
| 151 | static const int S_END_PUNCT = 4; // used in skip_thing() for moving "dot" |
| 152 | static const int S_END_ALNUM = 5; // used in skip_thing() for moving "dot" |
| 153 | |
| 154 | typedef unsigned char Byte; |
| 155 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 156 | static int vi_setops; |
| 157 | #define VI_AUTOINDENT 1 |
| 158 | #define VI_SHOWMATCH 2 |
| 159 | #define VI_IGNORECASE 4 |
| 160 | #define VI_ERR_METHOD 8 |
| 161 | #define autoindent (vi_setops & VI_AUTOINDENT) |
| 162 | #define showmatch (vi_setops & VI_SHOWMATCH ) |
| 163 | #define ignorecase (vi_setops & VI_IGNORECASE) |
| 164 | /* indicate error with beep or flash */ |
| 165 | #define err_method (vi_setops & VI_ERR_METHOD) |
| 166 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 167 | |
| 168 | static int editing; // >0 while we are editing a file |
| 169 | static int cmd_mode; // 0=command 1=insert |
| 170 | static int file_modified; // buffer contents changed |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 171 | static int fn_start; // index of first cmd line file name |
| 172 | static int save_argc; // how many file names on cmd line |
| 173 | static int cmdcnt; // repetition count |
| 174 | static fd_set rfds; // use select() for small sleeps |
| 175 | static struct timeval tv; // use select() for small sleeps |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 176 | static int rows, columns; // the terminal screen is this size |
| 177 | static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 178 | static Byte *status_buffer; // mesages to the user |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 179 | static Byte *cfn; // previous, current, and next file name |
| 180 | static Byte *text, *end, *textend; // pointers to the user data in memory |
| 181 | static Byte *screen; // pointer to the virtual screen buffer |
| 182 | static int screensize; // and its size |
| 183 | static Byte *screenbegin; // index into text[], of top line on the screen |
| 184 | static Byte *dot; // where all the action takes place |
| 185 | static int tabstop; |
| 186 | static struct termios term_orig, term_vi; // remember what the cooked mode was |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 187 | static Byte erase_char; // the users erase character |
| 188 | static Byte last_input_char; // last char read from user |
| 189 | static Byte last_forward_char; // last char searched for with 'f' |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 190 | |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 191 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 192 | static int last_row; // where the cursor was last moved to |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 193 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ |
| 194 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 195 | static jmp_buf restart; // catch_sig() |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 196 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 197 | #if defined(CONFIG_FEATURE_VI_USE_SIGNALS) || defined(CONFIG_FEATURE_VI_CRASHME) |
| 198 | static int my_pid; |
| 199 | #endif |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 200 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 201 | static int adding2q; // are we currently adding user input to q |
| 202 | static Byte *last_modifying_cmd; // last modifying cmd for "." |
| 203 | static Byte *ioq, *ioq_start; // pointer to string for get_one_char to "read" |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 204 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
| 205 | #if defined(CONFIG_FEATURE_VI_DOT_CMD) || defined(CONFIG_FEATURE_VI_YANKMARK) |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 206 | static Byte *modifying_cmds; // cmds that modify text[] |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 207 | #endif /* CONFIG_FEATURE_VI_DOT_CMD || CONFIG_FEATURE_VI_YANKMARK */ |
| 208 | #ifdef CONFIG_FEATURE_VI_READONLY |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 209 | static int vi_readonly, readonly; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 210 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 211 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 212 | static Byte *reg[28]; // named register a-z, "D", and "U" 0-25,26,27 |
| 213 | static int YDreg, Ureg; // default delete register and orig line for "U" |
| 214 | static Byte *mark[28]; // user marks points somewhere in text[]- a-z and previous context '' |
| 215 | static Byte *context_start, *context_end; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 216 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 217 | #ifdef CONFIG_FEATURE_VI_SEARCH |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 218 | static Byte *last_search_pattern; // last pattern from a '/' or '?' search |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 219 | #endif /* CONFIG_FEATURE_VI_SEARCH */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 220 | |
| 221 | |
| 222 | static void edit_file(Byte *); // edit one file |
| 223 | static void do_cmd(Byte); // execute a command |
| 224 | static void sync_cursor(Byte *, int *, int *); // synchronize the screen cursor to dot |
| 225 | static Byte *begin_line(Byte *); // return pointer to cur line B-o-l |
| 226 | static Byte *end_line(Byte *); // return pointer to cur line E-o-l |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 227 | static Byte *prev_line(Byte *); // return pointer to prev line B-o-l |
| 228 | static Byte *next_line(Byte *); // return pointer to next line B-o-l |
| 229 | static Byte *end_screen(void); // get pointer to last char on screen |
| 230 | static int count_lines(Byte *, Byte *); // count line from start to stop |
| 231 | static Byte *find_line(int); // find begining of line #li |
| 232 | static Byte *move_to_col(Byte *, int); // move "p" to column l |
| 233 | static int isblnk(Byte); // is the char a blank or tab |
| 234 | static void dot_left(void); // move dot left- dont leave line |
| 235 | static void dot_right(void); // move dot right- dont leave line |
| 236 | static void dot_begin(void); // move dot to B-o-l |
| 237 | static void dot_end(void); // move dot to E-o-l |
| 238 | static void dot_next(void); // move dot to next line B-o-l |
| 239 | static void dot_prev(void); // move dot to prev line B-o-l |
| 240 | static void dot_scroll(int, int); // move the screen up or down |
| 241 | static void dot_skip_over_ws(void); // move dot pat WS |
| 242 | static void dot_delete(void); // delete the char at 'dot' |
| 243 | static Byte *bound_dot(Byte *); // make sure text[0] <= P < "end" |
| 244 | static Byte *new_screen(int, int); // malloc virtual screen memory |
| 245 | static Byte *new_text(int); // malloc memory for text[] buffer |
| 246 | static Byte *char_insert(Byte *, Byte); // insert the char c at 'p' |
| 247 | static Byte *stupid_insert(Byte *, Byte); // stupidly insert the char c at 'p' |
| 248 | static Byte find_range(Byte **, Byte **, Byte); // return pointers for an object |
| 249 | static int st_test(Byte *, int, int, Byte *); // helper for skip_thing() |
| 250 | static Byte *skip_thing(Byte *, int, int, int); // skip some object |
| 251 | static Byte *find_pair(Byte *, Byte); // find matching pair () [] {} |
| 252 | static Byte *text_hole_delete(Byte *, Byte *); // at "p", delete a 'size' byte hole |
| 253 | static Byte *text_hole_make(Byte *, int); // at "p", make a 'size' byte hole |
| 254 | static Byte *yank_delete(Byte *, Byte *, int, int); // yank text[] into register then delete |
| 255 | static void show_help(void); // display some help info |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 256 | static void rawmode(void); // set "raw" mode on tty |
| 257 | static void cookmode(void); // return to "cooked" mode on tty |
| 258 | static int mysleep(int); // sleep for 'h' 1/100 seconds |
| 259 | static Byte readit(void); // read (maybe cursor) key from stdin |
| 260 | static Byte get_one_char(void); // read 1 char from stdin |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 261 | static int file_size(const Byte *); // what is the byte size of "fn" |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 262 | static int file_insert(Byte *, Byte *, int); |
| 263 | static int file_write(Byte *, Byte *, Byte *); |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 264 | static void place_cursor(int, int, int); |
Eric Andersen | bff7a60 | 2001-11-17 07:15:43 +0000 | [diff] [blame] | 265 | static void screen_erase(void); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 266 | static void clear_to_eol(void); |
| 267 | static void clear_to_eos(void); |
| 268 | static void standout_start(void); // send "start reverse video" sequence |
| 269 | static void standout_end(void); // send "end reverse video" sequence |
| 270 | static void flash(int); // flash the terminal screen |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 271 | static void show_status_line(void); // put a message on the bottom line |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 272 | static void psb(const char *, ...); // Print Status Buf |
| 273 | static void psbs(const char *, ...); // Print Status Buf in standout mode |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 274 | static void ni(Byte *); // display messages |
| 275 | static void edit_status(void); // show file status on status line |
| 276 | static void redraw(int); // force a full screen refresh |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 277 | static void format_line(Byte*, Byte*, int); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 278 | static void refresh(int); // update the terminal from screen[] |
| 279 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 280 | static void Indicate_Error(void); // use flash or beep to indicate error |
| 281 | #define indicate_error(c) Indicate_Error() |
| 282 | |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 283 | #ifdef CONFIG_FEATURE_VI_SEARCH |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 284 | static Byte *char_search(Byte *, Byte *, int, int); // search for pattern starting at p |
| 285 | static int mycmp(Byte *, Byte *, int); // string cmp based in "ignorecase" |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 286 | #endif /* CONFIG_FEATURE_VI_SEARCH */ |
| 287 | #ifdef CONFIG_FEATURE_VI_COLON |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 288 | static void Hit_Return(void); |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 289 | static Byte *get_one_address(Byte *, int *); // get colon addr, if present |
| 290 | static Byte *get_address(Byte *, int *, int *); // get two colon addrs, if present |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 291 | static void colon(Byte *); // execute the "colon" mode cmds |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 292 | #endif /* CONFIG_FEATURE_VI_COLON */ |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 293 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 294 | static void winch_sig(int); // catch window size changes |
| 295 | static void suspend_sig(int); // catch ctrl-Z |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 296 | static void catch_sig(int); // catch ctrl-C and alarm time-outs |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 297 | static void core_sig(int); // catch a core dump signal |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 298 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ |
| 299 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 300 | static void start_new_cmd_q(Byte); // new queue for command |
Eric Andersen | bff7a60 | 2001-11-17 07:15:43 +0000 | [diff] [blame] | 301 | static void end_cmd_q(void); // stop saving input chars |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 302 | #else /* CONFIG_FEATURE_VI_DOT_CMD */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 303 | #define end_cmd_q() |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 304 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
| 305 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 306 | static void window_size_get(int); // find out what size the window is |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 307 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ |
| 308 | #ifdef CONFIG_FEATURE_VI_SETOPTS |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 309 | static void showmatching(Byte *); // show the matching pair () [] {} |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 310 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ |
| 311 | #if defined(CONFIG_FEATURE_VI_YANKMARK) || defined(CONFIG_FEATURE_VI_COLON) || defined(CONFIG_FEATURE_VI_CRASHME) |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 312 | static Byte *string_insert(Byte *, Byte *); // insert the string at 'p' |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 313 | #endif /* CONFIG_FEATURE_VI_YANKMARK || CONFIG_FEATURE_VI_COLON || CONFIG_FEATURE_VI_CRASHME */ |
| 314 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 315 | static Byte *text_yank(Byte *, Byte *, int); // save copy of "p" into a register |
| 316 | static Byte what_reg(void); // what is letter of current YDreg |
| 317 | static void check_context(Byte); // remember context for '' command |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 318 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 319 | #ifdef CONFIG_FEATURE_VI_CRASHME |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 320 | static void crash_dummy(); |
| 321 | static void crash_test(); |
| 322 | static int crashme = 0; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 323 | #endif /* CONFIG_FEATURE_VI_CRASHME */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 324 | |
| 325 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 326 | static void write1(const char *out) |
| 327 | { |
| 328 | fputs(out, stdout); |
| 329 | } |
| 330 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 331 | extern int vi_main(int argc, char **argv) |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 332 | { |
Eric Andersen | d402edf | 2001-04-04 19:29:48 +0000 | [diff] [blame] | 333 | int c; |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 334 | RESERVE_CONFIG_BUFFER(STATUS_BUFFER, 200); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 335 | |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 336 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 337 | int i; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 338 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 339 | #if defined(CONFIG_FEATURE_VI_USE_SIGNALS) || defined(CONFIG_FEATURE_VI_CRASHME) |
| 340 | my_pid = getpid(); |
| 341 | #endif |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 342 | #ifdef CONFIG_FEATURE_VI_CRASHME |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 343 | (void) srand((long) my_pid); |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 344 | #endif /* CONFIG_FEATURE_VI_CRASHME */ |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 345 | |
| 346 | status_buffer = STATUS_BUFFER; |
| 347 | |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 348 | #ifdef CONFIG_FEATURE_VI_READONLY |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 349 | vi_readonly = readonly = FALSE; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 350 | if (strncmp(argv[0], "view", 4) == 0) { |
| 351 | readonly = TRUE; |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 352 | vi_readonly = TRUE; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 353 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 354 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 355 | vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE | VI_ERR_METHOD; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 356 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 357 | for (i = 0; i < 28; i++) { |
| 358 | reg[i] = 0; |
| 359 | } // init the yank regs |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 360 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Tim Riker | 86c76a9 | 2002-04-26 07:41:22 +0000 | [diff] [blame] | 361 | #if defined(CONFIG_FEATURE_VI_DOT_CMD) || defined(CONFIG_FEATURE_VI_YANKMARK) |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 362 | modifying_cmds = (Byte *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[] |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 363 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 364 | |
| 365 | // 1- process $HOME/.exrc file |
| 366 | // 2- process EXINIT variable from environment |
| 367 | // 3- process command line args |
| 368 | while ((c = getopt(argc, argv, "hCR")) != -1) { |
| 369 | switch (c) { |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 370 | #ifdef CONFIG_FEATURE_VI_CRASHME |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 371 | case 'C': |
| 372 | crashme = 1; |
| 373 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 374 | #endif /* CONFIG_FEATURE_VI_CRASHME */ |
| 375 | #ifdef CONFIG_FEATURE_VI_READONLY |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 376 | case 'R': // Read-only flag |
| 377 | readonly = TRUE; |
Eric Andersen | 90fb65f | 2004-03-31 11:12:51 +0000 | [diff] [blame] | 378 | vi_readonly = TRUE; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 379 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 380 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 381 | //case 'r': // recover flag- ignore- we don't use tmp file |
| 382 | //case 'x': // encryption flag- ignore |
| 383 | //case 'c': // execute command first |
| 384 | //case 'h': // help -- just use default |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 385 | default: |
| 386 | show_help(); |
Eric Andersen | dd8500b | 2001-07-02 18:06:14 +0000 | [diff] [blame] | 387 | return 1; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 388 | } |
| 389 | } |
| 390 | |
| 391 | // The argv array can be used by the ":next" and ":rewind" commands |
| 392 | // save optind. |
| 393 | fn_start = optind; // remember first file name for :next and :rew |
| 394 | save_argc = argc; |
| 395 | |
| 396 | //----- This is the main file handling loop -------------- |
| 397 | if (optind >= argc) { |
| 398 | editing = 1; // 0= exit, 1= one file, 2= multiple files |
| 399 | edit_file(0); |
| 400 | } else { |
| 401 | for (; optind < argc; optind++) { |
| 402 | editing = 1; // 0=exit, 1=one file, 2+ =many files |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 403 | free(cfn); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 404 | cfn = (Byte *) bb_xstrdup(argv[optind]); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 405 | edit_file(cfn); |
| 406 | } |
| 407 | } |
| 408 | //----------------------------------------------------------- |
| 409 | |
| 410 | return (0); |
| 411 | } |
| 412 | |
Eric Andersen | 8efe967 | 2003-09-15 08:33:45 +0000 | [diff] [blame] | 413 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE |
| 414 | //----- See what the window size currently is -------------------- |
| 415 | static inline void window_size_get(int fd) |
| 416 | { |
| 417 | get_terminal_width_height(fd, &columns, &rows); |
| 418 | } |
| 419 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ |
| 420 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 421 | static void edit_file(Byte * fn) |
| 422 | { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 423 | Byte c; |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 424 | int cnt, size, ch; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 425 | |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 426 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 427 | int sig; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 428 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ |
| 429 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 430 | static Byte *cur_line; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 431 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 432 | |
| 433 | rawmode(); |
| 434 | rows = 24; |
| 435 | columns = 80; |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 436 | ch= -1; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 437 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 438 | window_size_get(0); |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 439 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 440 | new_screen(rows, columns); // get memory for virtual screen |
| 441 | |
| 442 | cnt = file_size(fn); // file size |
| 443 | size = 2 * cnt; // 200% of file size |
| 444 | new_text(size); // get a text[] buffer |
| 445 | screenbegin = dot = end = text; |
| 446 | if (fn != 0) { |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 447 | ch= file_insert(fn, text, cnt); |
| 448 | } |
| 449 | if (ch < 1) { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 450 | (void) char_insert(text, '\n'); // start empty buf with dummy line |
| 451 | } |
| 452 | file_modified = FALSE; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 453 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 454 | YDreg = 26; // default Yank/Delete reg |
| 455 | Ureg = 27; // hold orig line for "U" cmd |
| 456 | for (cnt = 0; cnt < 28; cnt++) { |
| 457 | mark[cnt] = 0; |
| 458 | } // init the marks |
| 459 | mark[26] = mark[27] = text; // init "previous context" |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 460 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 461 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 462 | last_forward_char = last_input_char = '\0'; |
| 463 | crow = 0; |
| 464 | ccol = 0; |
| 465 | edit_status(); |
| 466 | |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 467 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 468 | catch_sig(0); |
| 469 | core_sig(0); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 470 | signal(SIGWINCH, winch_sig); |
| 471 | signal(SIGTSTP, suspend_sig); |
| 472 | sig = setjmp(restart); |
| 473 | if (sig != 0) { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 474 | const char *msg = ""; |
| 475 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 476 | if (sig == SIGWINCH) |
| 477 | msg = "(window resize)"; |
| 478 | if (sig == SIGHUP) |
| 479 | msg = "(hangup)"; |
| 480 | if (sig == SIGINT) |
| 481 | msg = "(interrupt)"; |
| 482 | if (sig == SIGTERM) |
| 483 | msg = "(terminate)"; |
| 484 | if (sig == SIGBUS) |
| 485 | msg = "(bus error)"; |
| 486 | if (sig == SIGSEGV) |
| 487 | msg = "(I tried to touch invalid memory)"; |
| 488 | if (sig == SIGALRM) |
| 489 | msg = "(alarm)"; |
| 490 | |
| 491 | psbs("-- caught signal %d %s--", sig, msg); |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 492 | screenbegin = dot = text; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 493 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 494 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 495 | |
| 496 | editing = 1; |
| 497 | cmd_mode = 0; // 0=command 1=insert 2='R'eplace |
| 498 | cmdcnt = 0; |
| 499 | tabstop = 8; |
| 500 | offset = 0; // no horizontal offset |
| 501 | c = '\0'; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 502 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 503 | free(last_modifying_cmd); |
| 504 | free(ioq_start); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 505 | ioq = ioq_start = last_modifying_cmd = 0; |
| 506 | adding2q = 0; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 507 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 508 | redraw(FALSE); // dont force every col re-draw |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 509 | show_status_line(); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 510 | fflush(stdout); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 511 | |
| 512 | //------This is the main Vi cmd handling loop ----------------------- |
| 513 | while (editing > 0) { |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 514 | #ifdef CONFIG_FEATURE_VI_CRASHME |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 515 | if (crashme > 0) { |
| 516 | if ((end - text) > 1) { |
| 517 | crash_dummy(); // generate a random command |
| 518 | } else { |
| 519 | crashme = 0; |
| 520 | dot = |
| 521 | string_insert(text, (Byte *) "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string |
| 522 | refresh(FALSE); |
| 523 | } |
| 524 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 525 | #endif /* CONFIG_FEATURE_VI_CRASHME */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 526 | last_input_char = c = get_one_char(); // get a cmd from user |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 527 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 528 | // save a copy of the current line- for the 'U" command |
| 529 | if (begin_line(dot) != cur_line) { |
| 530 | cur_line = begin_line(dot); |
| 531 | text_yank(begin_line(dot), end_line(dot), Ureg); |
| 532 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 533 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 534 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 535 | // These are commands that change text[]. |
| 536 | // Remember the input for the "." command |
| 537 | if (!adding2q && ioq_start == 0 |
| 538 | && strchr((char *) modifying_cmds, c) != NULL) { |
| 539 | start_new_cmd_q(c); |
| 540 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 541 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 542 | do_cmd(c); // execute the user command |
| 543 | // |
| 544 | // poll to see if there is input already waiting. if we are |
| 545 | // not able to display output fast enough to keep up, skip |
| 546 | // the display update until we catch up with input. |
| 547 | if (mysleep(0) == 0) { |
| 548 | // no input pending- so update output |
| 549 | refresh(FALSE); |
| 550 | show_status_line(); |
| 551 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 552 | #ifdef CONFIG_FEATURE_VI_CRASHME |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 553 | if (crashme > 0) |
| 554 | crash_test(); // test editor variables |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 555 | #endif /* CONFIG_FEATURE_VI_CRASHME */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 556 | } |
| 557 | //------------------------------------------------------------------- |
| 558 | |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 559 | place_cursor(rows, 0, FALSE); // go to bottom of screen |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 560 | clear_to_eol(); // Erase to end of line |
| 561 | cookmode(); |
| 562 | } |
| 563 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 564 | //----- The Colon commands ------------------------------------- |
| 565 | #ifdef CONFIG_FEATURE_VI_COLON |
| 566 | static Byte *get_one_address(Byte * p, int *addr) // get colon addr, if present |
| 567 | { |
| 568 | int st; |
| 569 | Byte *q; |
| 570 | |
| 571 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 572 | Byte c; |
| 573 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 574 | #ifdef CONFIG_FEATURE_VI_SEARCH |
| 575 | Byte *pat, buf[BUFSIZ]; |
| 576 | #endif /* CONFIG_FEATURE_VI_SEARCH */ |
| 577 | |
| 578 | *addr = -1; // assume no addr |
| 579 | if (*p == '.') { // the current line |
| 580 | p++; |
| 581 | q = begin_line(dot); |
| 582 | *addr = count_lines(text, q); |
| 583 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 584 | } else if (*p == '\'') { // is this a mark addr |
| 585 | p++; |
| 586 | c = tolower(*p); |
| 587 | p++; |
| 588 | if (c >= 'a' && c <= 'z') { |
| 589 | // we have a mark |
| 590 | c = c - 'a'; |
| 591 | q = mark[(int) c]; |
| 592 | if (q != NULL) { // is mark valid |
| 593 | *addr = count_lines(text, q); // count lines |
| 594 | } |
| 595 | } |
| 596 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 597 | #ifdef CONFIG_FEATURE_VI_SEARCH |
| 598 | } else if (*p == '/') { // a search pattern |
| 599 | q = buf; |
| 600 | for (p++; *p; p++) { |
| 601 | if (*p == '/') |
| 602 | break; |
| 603 | *q++ = *p; |
| 604 | *q = '\0'; |
| 605 | } |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 606 | pat = (Byte *) bb_xstrdup((char *) buf); // save copy of pattern |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 607 | if (*p == '/') |
| 608 | p++; |
| 609 | q = char_search(dot, pat, FORWARD, FULL); |
| 610 | if (q != NULL) { |
| 611 | *addr = count_lines(text, q); |
| 612 | } |
| 613 | free(pat); |
| 614 | #endif /* CONFIG_FEATURE_VI_SEARCH */ |
| 615 | } else if (*p == '$') { // the last line in file |
| 616 | p++; |
| 617 | q = begin_line(end - 1); |
| 618 | *addr = count_lines(text, q); |
| 619 | } else if (isdigit(*p)) { // specific line number |
| 620 | sscanf((char *) p, "%d%n", addr, &st); |
| 621 | p += st; |
| 622 | } else { // I don't reconise this |
| 623 | // unrecognised address- assume -1 |
| 624 | *addr = -1; |
| 625 | } |
| 626 | return (p); |
| 627 | } |
| 628 | |
| 629 | static Byte *get_address(Byte *p, int *b, int *e) // get two colon addrs, if present |
| 630 | { |
| 631 | //----- get the address' i.e., 1,3 'a,'b ----- |
| 632 | // get FIRST addr, if present |
| 633 | while (isblnk(*p)) |
| 634 | p++; // skip over leading spaces |
| 635 | if (*p == '%') { // alias for 1,$ |
| 636 | p++; |
| 637 | *b = 1; |
| 638 | *e = count_lines(text, end-1); |
| 639 | goto ga0; |
| 640 | } |
| 641 | p = get_one_address(p, b); |
| 642 | while (isblnk(*p)) |
| 643 | p++; |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame^] | 644 | if (*p == ',') { // is there a address separator |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 645 | p++; |
| 646 | while (isblnk(*p)) |
| 647 | p++; |
| 648 | // get SECOND addr, if present |
| 649 | p = get_one_address(p, e); |
| 650 | } |
| 651 | ga0: |
| 652 | while (isblnk(*p)) |
| 653 | p++; // skip over trailing spaces |
| 654 | return (p); |
| 655 | } |
| 656 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 657 | #ifdef CONFIG_FEATURE_VI_SETOPTS |
| 658 | static void setops(const Byte *args, const char *opname, int flg_no, |
| 659 | const char *short_opname, int opt) |
| 660 | { |
| 661 | const char *a = (char *) args + flg_no; |
| 662 | int l = strlen(opname) - 1; /* opname have + ' ' */ |
| 663 | |
| 664 | if (strncasecmp(a, opname, l) == 0 || |
| 665 | strncasecmp(a, short_opname, 2) == 0) { |
| 666 | if(flg_no) |
| 667 | vi_setops &= ~opt; |
| 668 | else |
| 669 | vi_setops |= opt; |
| 670 | } |
| 671 | } |
| 672 | #endif |
| 673 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 674 | static void colon(Byte * buf) |
| 675 | { |
| 676 | Byte c, *orig_buf, *buf1, *q, *r; |
| 677 | Byte *fn, cmd[BUFSIZ], args[BUFSIZ]; |
| 678 | int i, l, li, ch, st, b, e; |
| 679 | int useforce, forced; |
| 680 | struct stat st_buf; |
| 681 | |
| 682 | // :3154 // if (-e line 3154) goto it else stay put |
| 683 | // :4,33w! foo // write a portion of buffer to file "foo" |
| 684 | // :w // write all of buffer to current file |
| 685 | // :q // quit |
| 686 | // :q! // quit- dont care about modified file |
| 687 | // :'a,'z!sort -u // filter block through sort |
| 688 | // :'f // goto mark "f" |
| 689 | // :'fl // list literal the mark "f" line |
| 690 | // :.r bar // read file "bar" into buffer before dot |
| 691 | // :/123/,/abc/d // delete lines from "123" line to "abc" line |
| 692 | // :/xyz/ // goto the "xyz" line |
| 693 | // :s/find/replace/ // substitute pattern "find" with "replace" |
| 694 | // :!<cmd> // run <cmd> then return |
| 695 | // |
| 696 | if (strlen((char *) buf) <= 0) |
| 697 | goto vc1; |
| 698 | if (*buf == ':') |
| 699 | buf++; // move past the ':' |
| 700 | |
| 701 | forced = useforce = FALSE; |
| 702 | li = st = ch = i = 0; |
| 703 | b = e = -1; |
| 704 | q = text; // assume 1,$ for the range |
| 705 | r = end - 1; |
| 706 | li = count_lines(text, end - 1); |
| 707 | fn = cfn; // default to current file |
| 708 | memset(cmd, '\0', BUFSIZ); // clear cmd[] |
| 709 | memset(args, '\0', BUFSIZ); // clear args[] |
| 710 | |
| 711 | // look for optional address(es) :. :1 :1,9 :'q,'a :% |
| 712 | buf = get_address(buf, &b, &e); |
| 713 | |
| 714 | // remember orig command line |
| 715 | orig_buf = buf; |
| 716 | |
| 717 | // get the COMMAND into cmd[] |
| 718 | buf1 = cmd; |
| 719 | while (*buf != '\0') { |
| 720 | if (isspace(*buf)) |
| 721 | break; |
| 722 | *buf1++ = *buf++; |
| 723 | } |
| 724 | // get any ARGuments |
| 725 | while (isblnk(*buf)) |
| 726 | buf++; |
| 727 | strcpy((char *) args, (char *) buf); |
| 728 | buf1 = last_char_is((char *)cmd, '!'); |
| 729 | if (buf1) { |
| 730 | useforce = TRUE; |
| 731 | *buf1 = '\0'; // get rid of ! |
| 732 | } |
| 733 | if (b >= 0) { |
| 734 | // if there is only one addr, then the addr |
| 735 | // is the line number of the single line the |
| 736 | // user wants. So, reset the end |
| 737 | // pointer to point at end of the "b" line |
| 738 | q = find_line(b); // what line is #b |
| 739 | r = end_line(q); |
| 740 | li = 1; |
| 741 | } |
| 742 | if (e >= 0) { |
| 743 | // we were given two addrs. change the |
| 744 | // end pointer to the addr given by user. |
| 745 | r = find_line(e); // what line is #e |
| 746 | r = end_line(r); |
| 747 | li = e - b + 1; |
| 748 | } |
| 749 | // ------------ now look for the command ------------ |
| 750 | i = strlen((char *) cmd); |
| 751 | if (i == 0) { // :123CR goto line #123 |
| 752 | if (b >= 0) { |
| 753 | dot = find_line(b); // what line is #b |
| 754 | dot_skip_over_ws(); |
| 755 | } |
| 756 | } else if (strncmp((char *) cmd, "!", 1) == 0) { // run a cmd |
| 757 | // :!ls run the <cmd> |
| 758 | (void) alarm(0); // wait for input- no alarms |
| 759 | place_cursor(rows - 1, 0, FALSE); // go to Status line |
| 760 | clear_to_eol(); // clear the line |
| 761 | cookmode(); |
| 762 | system(orig_buf+1); // run the cmd |
| 763 | rawmode(); |
| 764 | Hit_Return(); // let user see results |
| 765 | (void) alarm(3); // done waiting for input |
| 766 | } else if (strncmp((char *) cmd, "=", i) == 0) { // where is the address |
| 767 | if (b < 0) { // no addr given- use defaults |
| 768 | b = e = count_lines(text, dot); |
| 769 | } |
| 770 | psb("%d", b); |
| 771 | } else if (strncasecmp((char *) cmd, "delete", i) == 0) { // delete lines |
| 772 | if (b < 0) { // no addr given- use defaults |
| 773 | q = begin_line(dot); // assume .,. for the range |
| 774 | r = end_line(dot); |
| 775 | } |
| 776 | dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines |
| 777 | dot_skip_over_ws(); |
| 778 | } else if (strncasecmp((char *) cmd, "edit", i) == 0) { // Edit a file |
| 779 | int sr; |
| 780 | sr= 0; |
| 781 | // don't edit, if the current file has been modified |
| 782 | if (file_modified && ! useforce) { |
| 783 | psbs("No write since last change (:edit! overrides)"); |
| 784 | goto vc1; |
| 785 | } |
| 786 | if (strlen(args) > 0) { |
| 787 | // the user supplied a file name |
| 788 | fn= args; |
| 789 | } else if (cfn != 0 && strlen(cfn) > 0) { |
| 790 | // no user supplied name- use the current filename |
| 791 | fn= cfn; |
| 792 | goto vc5; |
| 793 | } else { |
| 794 | // no user file name, no current name- punt |
| 795 | psbs("No current filename"); |
| 796 | goto vc1; |
| 797 | } |
| 798 | |
| 799 | // see if file exists- if not, its just a new file request |
| 800 | if ((sr=stat((char*)fn, &st_buf)) < 0) { |
| 801 | // This is just a request for a new file creation. |
| 802 | // The file_insert below will fail but we get |
| 803 | // an empty buffer with a file name. Then the "write" |
| 804 | // command can do the create. |
| 805 | } else { |
| 806 | if ((st_buf.st_mode & (S_IFREG)) == 0) { |
| 807 | // This is not a regular file |
| 808 | psbs("\"%s\" is not a regular file", fn); |
| 809 | goto vc1; |
| 810 | } |
| 811 | if ((st_buf.st_mode & (S_IRUSR | S_IRGRP | S_IROTH)) == 0) { |
| 812 | // dont have any read permissions |
| 813 | psbs("\"%s\" is not readable", fn); |
| 814 | goto vc1; |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | // There is a read-able regular file |
| 819 | // make this the current file |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 820 | q = (Byte *) bb_xstrdup((char *) fn); // save the cfn |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 821 | free(cfn); // free the old name |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 822 | cfn = q; // remember new cfn |
| 823 | |
| 824 | vc5: |
| 825 | // delete all the contents of text[] |
| 826 | new_text(2 * file_size(fn)); |
| 827 | screenbegin = dot = end = text; |
| 828 | |
| 829 | // insert new file |
| 830 | ch = file_insert(fn, text, file_size(fn)); |
| 831 | |
| 832 | if (ch < 1) { |
| 833 | // start empty buf with dummy line |
| 834 | (void) char_insert(text, '\n'); |
| 835 | ch= 1; |
| 836 | } |
| 837 | file_modified = FALSE; |
| 838 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 839 | if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) { |
| 840 | free(reg[Ureg]); // free orig line reg- for 'U' |
| 841 | reg[Ureg]= 0; |
| 842 | } |
| 843 | if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) { |
| 844 | free(reg[YDreg]); // free default yank/delete register |
| 845 | reg[YDreg]= 0; |
| 846 | } |
| 847 | for (li = 0; li < 28; li++) { |
| 848 | mark[li] = 0; |
| 849 | } // init the marks |
| 850 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 851 | // how many lines in text[]? |
| 852 | li = count_lines(text, end - 1); |
| 853 | psb("\"%s\"%s" |
| 854 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 855 | "%s" |
| 856 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 857 | " %dL, %dC", cfn, |
| 858 | (sr < 0 ? " [New file]" : ""), |
| 859 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 860 | ((vi_readonly || readonly) ? " [Read only]" : ""), |
| 861 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 862 | li, ch); |
| 863 | } else if (strncasecmp((char *) cmd, "file", i) == 0) { // what File is this |
| 864 | if (b != -1 || e != -1) { |
| 865 | ni((Byte *) "No address allowed on this command"); |
| 866 | goto vc1; |
| 867 | } |
| 868 | if (strlen((char *) args) > 0) { |
| 869 | // user wants a new filename |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 870 | free(cfn); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 871 | cfn = (Byte *) bb_xstrdup((char *) args); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 872 | } else { |
| 873 | // user wants file status info |
| 874 | edit_status(); |
| 875 | } |
| 876 | } else if (strncasecmp((char *) cmd, "features", i) == 0) { // what features are available |
| 877 | // print out values of all features |
| 878 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen |
| 879 | clear_to_eol(); // clear the line |
| 880 | cookmode(); |
| 881 | show_help(); |
| 882 | rawmode(); |
| 883 | Hit_Return(); |
| 884 | } else if (strncasecmp((char *) cmd, "list", i) == 0) { // literal print line |
| 885 | if (b < 0) { // no addr given- use defaults |
| 886 | q = begin_line(dot); // assume .,. for the range |
| 887 | r = end_line(dot); |
| 888 | } |
| 889 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen |
| 890 | clear_to_eol(); // clear the line |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 891 | puts("\r"); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 892 | for (; q <= r; q++) { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 893 | int c_is_no_print; |
| 894 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 895 | c = *q; |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 896 | c_is_no_print = c > 127 && !Isprint(c); |
| 897 | if (c_is_no_print) { |
| 898 | c = '.'; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 899 | standout_start(); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 900 | } |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 901 | if (c == '\n') { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 902 | write1("$\r"); |
| 903 | } else if (c < ' ' || c == 127) { |
| 904 | putchar('^'); |
| 905 | if(c == 127) |
| 906 | c = '?'; |
| 907 | else |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 908 | c += '@'; |
| 909 | } |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 910 | putchar(c); |
| 911 | if (c_is_no_print) |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 912 | standout_end(); |
| 913 | } |
| 914 | #ifdef CONFIG_FEATURE_VI_SET |
| 915 | vc2: |
| 916 | #endif /* CONFIG_FEATURE_VI_SET */ |
| 917 | Hit_Return(); |
| 918 | } else if ((strncasecmp((char *) cmd, "quit", i) == 0) || // Quit |
| 919 | (strncasecmp((char *) cmd, "next", i) == 0)) { // edit next file |
| 920 | if (useforce) { |
| 921 | // force end of argv list |
| 922 | if (*cmd == 'q') { |
| 923 | optind = save_argc; |
| 924 | } |
| 925 | editing = 0; |
| 926 | goto vc1; |
| 927 | } |
| 928 | // don't exit if the file been modified |
| 929 | if (file_modified) { |
| 930 | psbs("No write since last change (:%s! overrides)", |
| 931 | (*cmd == 'q' ? "quit" : "next")); |
| 932 | goto vc1; |
| 933 | } |
| 934 | // are there other file to edit |
| 935 | if (*cmd == 'q' && optind < save_argc - 1) { |
| 936 | psbs("%d more file to edit", (save_argc - optind - 1)); |
| 937 | goto vc1; |
| 938 | } |
| 939 | if (*cmd == 'n' && optind >= save_argc - 1) { |
| 940 | psbs("No more files to edit"); |
| 941 | goto vc1; |
| 942 | } |
| 943 | editing = 0; |
| 944 | } else if (strncasecmp((char *) cmd, "read", i) == 0) { // read file into text[] |
| 945 | fn = args; |
| 946 | if (strlen((char *) fn) <= 0) { |
| 947 | psbs("No filename given"); |
| 948 | goto vc1; |
| 949 | } |
| 950 | if (b < 0) { // no addr given- use defaults |
| 951 | q = begin_line(dot); // assume "dot" |
| 952 | } |
| 953 | // read after current line- unless user said ":0r foo" |
| 954 | if (b != 0) |
| 955 | q = next_line(q); |
| 956 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 957 | l= readonly; // remember current files' status |
| 958 | #endif |
| 959 | ch = file_insert(fn, q, file_size(fn)); |
| 960 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 961 | readonly= l; |
| 962 | #endif |
| 963 | if (ch < 0) |
| 964 | goto vc1; // nothing was inserted |
| 965 | // how many lines in text[]? |
| 966 | li = count_lines(q, q + ch - 1); |
| 967 | psb("\"%s\"" |
| 968 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 969 | "%s" |
| 970 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 971 | " %dL, %dC", fn, |
| 972 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 973 | ((vi_readonly || readonly) ? " [Read only]" : ""), |
| 974 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 975 | li, ch); |
| 976 | if (ch > 0) { |
| 977 | // if the insert is before "dot" then we need to update |
| 978 | if (q <= dot) |
| 979 | dot += ch; |
| 980 | file_modified = TRUE; |
| 981 | } |
| 982 | } else if (strncasecmp((char *) cmd, "rewind", i) == 0) { // rewind cmd line args |
| 983 | if (file_modified && ! useforce) { |
| 984 | psbs("No write since last change (:rewind! overrides)"); |
| 985 | } else { |
| 986 | // reset the filenames to edit |
| 987 | optind = fn_start - 1; |
| 988 | editing = 0; |
| 989 | } |
| 990 | #ifdef CONFIG_FEATURE_VI_SET |
| 991 | } else if (strncasecmp((char *) cmd, "set", i) == 0) { // set or clear features |
| 992 | i = 0; // offset into args |
| 993 | if (strlen((char *) args) == 0) { |
| 994 | // print out values of all options |
| 995 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen |
| 996 | clear_to_eol(); // clear the line |
| 997 | printf("----------------------------------------\r\n"); |
| 998 | #ifdef CONFIG_FEATURE_VI_SETOPTS |
| 999 | if (!autoindent) |
| 1000 | printf("no"); |
| 1001 | printf("autoindent "); |
| 1002 | if (!err_method) |
| 1003 | printf("no"); |
| 1004 | printf("flash "); |
| 1005 | if (!ignorecase) |
| 1006 | printf("no"); |
| 1007 | printf("ignorecase "); |
| 1008 | if (!showmatch) |
| 1009 | printf("no"); |
| 1010 | printf("showmatch "); |
| 1011 | printf("tabstop=%d ", tabstop); |
| 1012 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ |
| 1013 | printf("\r\n"); |
| 1014 | goto vc2; |
| 1015 | } |
| 1016 | if (strncasecmp((char *) args, "no", 2) == 0) |
| 1017 | i = 2; // ":set noautoindent" |
| 1018 | #ifdef CONFIG_FEATURE_VI_SETOPTS |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1019 | setops(args, "autoindent ", i, "ai", VI_AUTOINDENT); |
| 1020 | setops(args, "flash ", i, "fl", VI_ERR_METHOD); |
| 1021 | setops(args, "ignorecase ", i, "ic", VI_IGNORECASE); |
| 1022 | setops(args, "showmatch ", i, "ic", VI_SHOWMATCH); |
| 1023 | if (strncasecmp((char *) args + i, "tabstop=%d ", 7) == 0) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1024 | sscanf(strchr((char *) args + i, '='), "=%d", &ch); |
| 1025 | if (ch > 0 && ch < columns - 1) |
| 1026 | tabstop = ch; |
| 1027 | } |
| 1028 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ |
| 1029 | #endif /* CONFIG_FEATURE_VI_SET */ |
| 1030 | #ifdef CONFIG_FEATURE_VI_SEARCH |
| 1031 | } else if (strncasecmp((char *) cmd, "s", 1) == 0) { // substitute a pattern with a replacement pattern |
| 1032 | Byte *ls, *F, *R; |
| 1033 | int gflag; |
| 1034 | |
| 1035 | // F points to the "find" pattern |
| 1036 | // R points to the "replace" pattern |
| 1037 | // replace the cmd line delimiters "/" with NULLs |
| 1038 | gflag = 0; // global replace flag |
| 1039 | c = orig_buf[1]; // what is the delimiter |
| 1040 | F = orig_buf + 2; // start of "find" |
| 1041 | R = (Byte *) strchr((char *) F, c); // middle delimiter |
| 1042 | if (!R) goto colon_s_fail; |
| 1043 | *R++ = '\0'; // terminate "find" |
| 1044 | buf1 = (Byte *) strchr((char *) R, c); |
| 1045 | if (!buf1) goto colon_s_fail; |
| 1046 | *buf1++ = '\0'; // terminate "replace" |
| 1047 | if (*buf1 == 'g') { // :s/foo/bar/g |
| 1048 | buf1++; |
| 1049 | gflag++; // turn on gflag |
| 1050 | } |
| 1051 | q = begin_line(q); |
| 1052 | if (b < 0) { // maybe :s/foo/bar/ |
| 1053 | q = begin_line(dot); // start with cur line |
| 1054 | b = count_lines(text, q); // cur line number |
| 1055 | } |
| 1056 | if (e < 0) |
| 1057 | e = b; // maybe :.s/foo/bar/ |
| 1058 | for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0 |
| 1059 | ls = q; // orig line start |
| 1060 | vc4: |
| 1061 | buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find" |
| 1062 | if (buf1 != NULL) { |
| 1063 | // we found the "find" pattern- delete it |
| 1064 | (void) text_hole_delete(buf1, buf1 + strlen((char *) F) - 1); |
| 1065 | // inset the "replace" patern |
| 1066 | (void) string_insert(buf1, R); // insert the string |
| 1067 | // check for "global" :s/foo/bar/g |
| 1068 | if (gflag == 1) { |
| 1069 | if ((buf1 + strlen((char *) R)) < end_line(ls)) { |
| 1070 | q = buf1 + strlen((char *) R); |
| 1071 | goto vc4; // don't let q move past cur line |
| 1072 | } |
| 1073 | } |
| 1074 | } |
| 1075 | q = next_line(ls); |
| 1076 | } |
| 1077 | #endif /* CONFIG_FEATURE_VI_SEARCH */ |
| 1078 | } else if (strncasecmp((char *) cmd, "version", i) == 0) { // show software version |
| 1079 | psb("%s", vi_Version); |
| 1080 | } else if ((strncasecmp((char *) cmd, "write", i) == 0) || // write text to file |
| 1081 | (strncasecmp((char *) cmd, "wq", i) == 0) || |
| 1082 | (strncasecmp((char *) cmd, "x", i) == 0)) { |
| 1083 | // is there a file name to write to? |
| 1084 | if (strlen((char *) args) > 0) { |
| 1085 | fn = args; |
| 1086 | } |
| 1087 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 1088 | if ((vi_readonly || readonly) && ! useforce) { |
| 1089 | psbs("\"%s\" File is read only", fn); |
| 1090 | goto vc3; |
| 1091 | } |
| 1092 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 1093 | // how many lines in text[]? |
| 1094 | li = count_lines(q, r); |
| 1095 | ch = r - q + 1; |
| 1096 | // see if file exists- if not, its just a new file request |
| 1097 | if (useforce) { |
| 1098 | // if "fn" is not write-able, chmod u+w |
| 1099 | // sprintf(syscmd, "chmod u+w %s", fn); |
| 1100 | // system(syscmd); |
| 1101 | forced = TRUE; |
| 1102 | } |
| 1103 | l = file_write(fn, q, r); |
| 1104 | if (useforce && forced) { |
| 1105 | // chmod u-w |
| 1106 | // sprintf(syscmd, "chmod u-w %s", fn); |
| 1107 | // system(syscmd); |
| 1108 | forced = FALSE; |
| 1109 | } |
| 1110 | psb("\"%s\" %dL, %dC", fn, li, l); |
| 1111 | if (q == text && r == end - 1 && l == ch) |
| 1112 | file_modified = FALSE; |
| 1113 | if ((cmd[0] == 'x' || cmd[1] == 'q') && l == ch) { |
| 1114 | editing = 0; |
| 1115 | } |
| 1116 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 1117 | vc3:; |
| 1118 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 1119 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 1120 | } else if (strncasecmp((char *) cmd, "yank", i) == 0) { // yank lines |
| 1121 | if (b < 0) { // no addr given- use defaults |
| 1122 | q = begin_line(dot); // assume .,. for the range |
| 1123 | r = end_line(dot); |
| 1124 | } |
| 1125 | text_yank(q, r, YDreg); |
| 1126 | li = count_lines(q, r); |
| 1127 | psb("Yank %d lines (%d chars) into [%c]", |
| 1128 | li, strlen((char *) reg[YDreg]), what_reg()); |
| 1129 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 1130 | } else { |
| 1131 | // cmd unknown |
| 1132 | ni((Byte *) cmd); |
| 1133 | } |
| 1134 | vc1: |
| 1135 | dot = bound_dot(dot); // make sure "dot" is valid |
| 1136 | return; |
| 1137 | #ifdef CONFIG_FEATURE_VI_SEARCH |
| 1138 | colon_s_fail: |
| 1139 | psb(":s expression missing delimiters"); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1140 | #endif |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | static void Hit_Return(void) |
| 1144 | { |
| 1145 | char c; |
| 1146 | |
| 1147 | standout_start(); // start reverse video |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1148 | write1("[Hit return to continue]"); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1149 | standout_end(); // end reverse video |
| 1150 | while ((c = get_one_char()) != '\n' && c != '\r') /*do nothing */ |
| 1151 | ; |
| 1152 | redraw(TRUE); // force redraw all |
| 1153 | } |
| 1154 | #endif /* CONFIG_FEATURE_VI_COLON */ |
| 1155 | |
| 1156 | //----- Synchronize the cursor to Dot -------------------------- |
| 1157 | static void sync_cursor(Byte * d, int *row, int *col) |
| 1158 | { |
| 1159 | Byte *beg_cur, *end_cur; // begin and end of "d" line |
| 1160 | Byte *beg_scr, *end_scr; // begin and end of screen |
| 1161 | Byte *tp; |
| 1162 | int cnt, ro, co; |
| 1163 | |
| 1164 | beg_cur = begin_line(d); // first char of cur line |
| 1165 | end_cur = end_line(d); // last char of cur line |
| 1166 | |
| 1167 | beg_scr = end_scr = screenbegin; // first char of screen |
| 1168 | end_scr = end_screen(); // last char of screen |
| 1169 | |
| 1170 | if (beg_cur < screenbegin) { |
| 1171 | // "d" is before top line on screen |
| 1172 | // how many lines do we have to move |
| 1173 | cnt = count_lines(beg_cur, screenbegin); |
| 1174 | sc1: |
| 1175 | screenbegin = beg_cur; |
| 1176 | if (cnt > (rows - 1) / 2) { |
| 1177 | // we moved too many lines. put "dot" in middle of screen |
| 1178 | for (cnt = 0; cnt < (rows - 1) / 2; cnt++) { |
| 1179 | screenbegin = prev_line(screenbegin); |
| 1180 | } |
| 1181 | } |
| 1182 | } else if (beg_cur > end_scr) { |
| 1183 | // "d" is after bottom line on screen |
| 1184 | // how many lines do we have to move |
| 1185 | cnt = count_lines(end_scr, beg_cur); |
| 1186 | if (cnt > (rows - 1) / 2) |
| 1187 | goto sc1; // too many lines |
| 1188 | for (ro = 0; ro < cnt - 1; ro++) { |
| 1189 | // move screen begin the same amount |
| 1190 | screenbegin = next_line(screenbegin); |
| 1191 | // now, move the end of screen |
| 1192 | end_scr = next_line(end_scr); |
| 1193 | end_scr = end_line(end_scr); |
| 1194 | } |
| 1195 | } |
| 1196 | // "d" is on screen- find out which row |
| 1197 | tp = screenbegin; |
| 1198 | for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row |
| 1199 | if (tp == beg_cur) |
| 1200 | break; |
| 1201 | tp = next_line(tp); |
| 1202 | } |
| 1203 | |
| 1204 | // find out what col "d" is on |
| 1205 | co = 0; |
| 1206 | do { // drive "co" to correct column |
| 1207 | if (*tp == '\n' || *tp == '\0') |
| 1208 | break; |
| 1209 | if (*tp == '\t') { |
| 1210 | // 7 - (co % 8 ) |
| 1211 | co += ((tabstop - 1) - (co % tabstop)); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1212 | } else if (*tp < ' ' || *tp == 127) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1213 | co++; // display as ^X, use 2 columns |
| 1214 | } |
| 1215 | } while (tp++ < d && ++co); |
| 1216 | |
| 1217 | // "co" is the column where "dot" is. |
| 1218 | // The screen has "columns" columns. |
| 1219 | // The currently displayed columns are 0+offset -- columns+ofset |
| 1220 | // |-------------------------------------------------------------| |
| 1221 | // ^ ^ ^ |
| 1222 | // offset | |------- columns ----------------| |
| 1223 | // |
| 1224 | // If "co" is already in this range then we do not have to adjust offset |
| 1225 | // but, we do have to subtract the "offset" bias from "co". |
| 1226 | // If "co" is outside this range then we have to change "offset". |
| 1227 | // If the first char of a line is a tab the cursor will try to stay |
| 1228 | // in column 7, but we have to set offset to 0. |
| 1229 | |
| 1230 | if (co < 0 + offset) { |
| 1231 | offset = co; |
| 1232 | } |
| 1233 | if (co >= columns + offset) { |
| 1234 | offset = co - columns + 1; |
| 1235 | } |
| 1236 | // if the first char of the line is a tab, and "dot" is sitting on it |
| 1237 | // force offset to 0. |
| 1238 | if (d == beg_cur && *d == '\t') { |
| 1239 | offset = 0; |
| 1240 | } |
| 1241 | co -= offset; |
| 1242 | |
| 1243 | *row = ro; |
| 1244 | *col = co; |
| 1245 | } |
| 1246 | |
| 1247 | //----- Text Movement Routines --------------------------------- |
| 1248 | static Byte *begin_line(Byte * p) // return pointer to first char cur line |
| 1249 | { |
| 1250 | while (p > text && p[-1] != '\n') |
| 1251 | p--; // go to cur line B-o-l |
| 1252 | return (p); |
| 1253 | } |
| 1254 | |
| 1255 | static Byte *end_line(Byte * p) // return pointer to NL of cur line line |
| 1256 | { |
| 1257 | while (p < end - 1 && *p != '\n') |
| 1258 | p++; // go to cur line E-o-l |
| 1259 | return (p); |
| 1260 | } |
| 1261 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1262 | static inline Byte *dollar_line(Byte * p) // return pointer to just before NL line |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1263 | { |
| 1264 | while (p < end - 1 && *p != '\n') |
| 1265 | p++; // go to cur line E-o-l |
| 1266 | // Try to stay off of the Newline |
| 1267 | if (*p == '\n' && (p - begin_line(p)) > 0) |
| 1268 | p--; |
| 1269 | return (p); |
| 1270 | } |
| 1271 | |
| 1272 | static Byte *prev_line(Byte * p) // return pointer first char prev line |
| 1273 | { |
| 1274 | p = begin_line(p); // goto begining of cur line |
| 1275 | if (p[-1] == '\n' && p > text) |
| 1276 | p--; // step to prev line |
| 1277 | p = begin_line(p); // goto begining of prev line |
| 1278 | return (p); |
| 1279 | } |
| 1280 | |
| 1281 | static Byte *next_line(Byte * p) // return pointer first char next line |
| 1282 | { |
| 1283 | p = end_line(p); |
| 1284 | if (*p == '\n' && p < end - 1) |
| 1285 | p++; // step to next line |
| 1286 | return (p); |
| 1287 | } |
| 1288 | |
| 1289 | //----- Text Information Routines ------------------------------ |
| 1290 | static Byte *end_screen(void) |
| 1291 | { |
| 1292 | Byte *q; |
| 1293 | int cnt; |
| 1294 | |
| 1295 | // find new bottom line |
| 1296 | q = screenbegin; |
| 1297 | for (cnt = 0; cnt < rows - 2; cnt++) |
| 1298 | q = next_line(q); |
| 1299 | q = end_line(q); |
| 1300 | return (q); |
| 1301 | } |
| 1302 | |
| 1303 | static int count_lines(Byte * start, Byte * stop) // count line from start to stop |
| 1304 | { |
| 1305 | Byte *q; |
| 1306 | int cnt; |
| 1307 | |
| 1308 | if (stop < start) { // start and stop are backwards- reverse them |
| 1309 | q = start; |
| 1310 | start = stop; |
| 1311 | stop = q; |
| 1312 | } |
| 1313 | cnt = 0; |
| 1314 | stop = end_line(stop); // get to end of this line |
| 1315 | for (q = start; q <= stop && q <= end - 1; q++) { |
| 1316 | if (*q == '\n') |
| 1317 | cnt++; |
| 1318 | } |
| 1319 | return (cnt); |
| 1320 | } |
| 1321 | |
| 1322 | static Byte *find_line(int li) // find begining of line #li |
| 1323 | { |
| 1324 | Byte *q; |
| 1325 | |
| 1326 | for (q = text; li > 1; li--) { |
| 1327 | q = next_line(q); |
| 1328 | } |
| 1329 | return (q); |
| 1330 | } |
| 1331 | |
| 1332 | //----- Dot Movement Routines ---------------------------------- |
| 1333 | static void dot_left(void) |
| 1334 | { |
| 1335 | if (dot > text && dot[-1] != '\n') |
| 1336 | dot--; |
| 1337 | } |
| 1338 | |
| 1339 | static void dot_right(void) |
| 1340 | { |
| 1341 | if (dot < end - 1 && *dot != '\n') |
| 1342 | dot++; |
| 1343 | } |
| 1344 | |
| 1345 | static void dot_begin(void) |
| 1346 | { |
| 1347 | dot = begin_line(dot); // return pointer to first char cur line |
| 1348 | } |
| 1349 | |
| 1350 | static void dot_end(void) |
| 1351 | { |
| 1352 | dot = end_line(dot); // return pointer to last char cur line |
| 1353 | } |
| 1354 | |
| 1355 | static Byte *move_to_col(Byte * p, int l) |
| 1356 | { |
| 1357 | int co; |
| 1358 | |
| 1359 | p = begin_line(p); |
| 1360 | co = 0; |
| 1361 | do { |
| 1362 | if (*p == '\n' || *p == '\0') |
| 1363 | break; |
| 1364 | if (*p == '\t') { |
| 1365 | // 7 - (co % 8 ) |
| 1366 | co += ((tabstop - 1) - (co % tabstop)); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1367 | } else if (*p < ' ' || *p == 127) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1368 | co++; // display as ^X, use 2 columns |
| 1369 | } |
| 1370 | } while (++co <= l && p++ < end); |
| 1371 | return (p); |
| 1372 | } |
| 1373 | |
| 1374 | static void dot_next(void) |
| 1375 | { |
| 1376 | dot = next_line(dot); |
| 1377 | } |
| 1378 | |
| 1379 | static void dot_prev(void) |
| 1380 | { |
| 1381 | dot = prev_line(dot); |
| 1382 | } |
| 1383 | |
| 1384 | static void dot_scroll(int cnt, int dir) |
| 1385 | { |
| 1386 | Byte *q; |
| 1387 | |
| 1388 | for (; cnt > 0; cnt--) { |
| 1389 | if (dir < 0) { |
| 1390 | // scroll Backwards |
| 1391 | // ctrl-Y scroll up one line |
| 1392 | screenbegin = prev_line(screenbegin); |
| 1393 | } else { |
| 1394 | // scroll Forwards |
| 1395 | // ctrl-E scroll down one line |
| 1396 | screenbegin = next_line(screenbegin); |
| 1397 | } |
| 1398 | } |
| 1399 | // make sure "dot" stays on the screen so we dont scroll off |
| 1400 | if (dot < screenbegin) |
| 1401 | dot = screenbegin; |
| 1402 | q = end_screen(); // find new bottom line |
| 1403 | if (dot > q) |
| 1404 | dot = begin_line(q); // is dot is below bottom line? |
| 1405 | dot_skip_over_ws(); |
| 1406 | } |
| 1407 | |
| 1408 | static void dot_skip_over_ws(void) |
| 1409 | { |
| 1410 | // skip WS |
| 1411 | while (isspace(*dot) && *dot != '\n' && dot < end - 1) |
| 1412 | dot++; |
| 1413 | } |
| 1414 | |
| 1415 | static void dot_delete(void) // delete the char at 'dot' |
| 1416 | { |
| 1417 | (void) text_hole_delete(dot, dot); |
| 1418 | } |
| 1419 | |
| 1420 | static Byte *bound_dot(Byte * p) // make sure text[0] <= P < "end" |
| 1421 | { |
| 1422 | if (p >= end && end > text) { |
| 1423 | p = end - 1; |
| 1424 | indicate_error('1'); |
| 1425 | } |
| 1426 | if (p < text) { |
| 1427 | p = text; |
| 1428 | indicate_error('2'); |
| 1429 | } |
| 1430 | return (p); |
| 1431 | } |
| 1432 | |
| 1433 | //----- Helper Utility Routines -------------------------------- |
| 1434 | |
| 1435 | //---------------------------------------------------------------- |
| 1436 | //----- Char Routines -------------------------------------------- |
| 1437 | /* Chars that are part of a word- |
| 1438 | * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz |
| 1439 | * Chars that are Not part of a word (stoppers) |
| 1440 | * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~ |
| 1441 | * Chars that are WhiteSpace |
| 1442 | * TAB NEWLINE VT FF RETURN SPACE |
| 1443 | * DO NOT COUNT NEWLINE AS WHITESPACE |
| 1444 | */ |
| 1445 | |
| 1446 | static Byte *new_screen(int ro, int co) |
| 1447 | { |
| 1448 | int li; |
| 1449 | |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 1450 | free(screen); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1451 | screensize = ro * co + 8; |
| 1452 | screen = (Byte *) xmalloc(screensize); |
| 1453 | // initialize the new screen. assume this will be a empty file. |
| 1454 | screen_erase(); |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame^] | 1455 | // non-existent text[] lines start with a tilde (~). |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1456 | for (li = 1; li < ro - 1; li++) { |
| 1457 | screen[(li * co) + 0] = '~'; |
| 1458 | } |
| 1459 | return (screen); |
| 1460 | } |
| 1461 | |
| 1462 | static Byte *new_text(int size) |
| 1463 | { |
| 1464 | if (size < 10240) |
| 1465 | size = 10240; // have a minimum size for new files |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 1466 | free(text); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1467 | text = (Byte *) xmalloc(size + 8); |
| 1468 | memset(text, '\0', size); // clear new text[] |
| 1469 | //text += 4; // leave some room for "oops" |
| 1470 | textend = text + size - 1; |
| 1471 | //textend -= 4; // leave some root for "oops" |
| 1472 | return (text); |
| 1473 | } |
| 1474 | |
| 1475 | #ifdef CONFIG_FEATURE_VI_SEARCH |
| 1476 | static int mycmp(Byte * s1, Byte * s2, int len) |
| 1477 | { |
| 1478 | int i; |
| 1479 | |
| 1480 | i = strncmp((char *) s1, (char *) s2, len); |
| 1481 | #ifdef CONFIG_FEATURE_VI_SETOPTS |
| 1482 | if (ignorecase) { |
| 1483 | i = strncasecmp((char *) s1, (char *) s2, len); |
| 1484 | } |
| 1485 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ |
| 1486 | return (i); |
| 1487 | } |
| 1488 | |
| 1489 | static Byte *char_search(Byte * p, Byte * pat, int dir, int range) // search for pattern starting at p |
| 1490 | { |
| 1491 | #ifndef REGEX_SEARCH |
| 1492 | Byte *start, *stop; |
| 1493 | int len; |
| 1494 | |
| 1495 | len = strlen((char *) pat); |
| 1496 | if (dir == FORWARD) { |
| 1497 | stop = end - 1; // assume range is p - end-1 |
| 1498 | if (range == LIMITED) |
| 1499 | stop = next_line(p); // range is to next line |
| 1500 | for (start = p; start < stop; start++) { |
| 1501 | if (mycmp(start, pat, len) == 0) { |
| 1502 | return (start); |
| 1503 | } |
| 1504 | } |
| 1505 | } else if (dir == BACK) { |
| 1506 | stop = text; // assume range is text - p |
| 1507 | if (range == LIMITED) |
| 1508 | stop = prev_line(p); // range is to prev line |
| 1509 | for (start = p - len; start >= stop; start--) { |
| 1510 | if (mycmp(start, pat, len) == 0) { |
| 1511 | return (start); |
| 1512 | } |
| 1513 | } |
| 1514 | } |
| 1515 | // pattern not found |
| 1516 | return (NULL); |
| 1517 | #else /*REGEX_SEARCH */ |
| 1518 | char *q; |
| 1519 | struct re_pattern_buffer preg; |
| 1520 | int i; |
| 1521 | int size, range; |
| 1522 | |
| 1523 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED; |
| 1524 | preg.translate = 0; |
| 1525 | preg.fastmap = 0; |
| 1526 | preg.buffer = 0; |
| 1527 | preg.allocated = 0; |
| 1528 | |
| 1529 | // assume a LIMITED forward search |
| 1530 | q = next_line(p); |
| 1531 | q = end_line(q); |
| 1532 | q = end - 1; |
| 1533 | if (dir == BACK) { |
| 1534 | q = prev_line(p); |
| 1535 | q = text; |
| 1536 | } |
| 1537 | // count the number of chars to search over, forward or backward |
| 1538 | size = q - p; |
| 1539 | if (size < 0) |
| 1540 | size = p - q; |
| 1541 | // RANGE could be negative if we are searching backwards |
| 1542 | range = q - p; |
| 1543 | |
| 1544 | q = (char *) re_compile_pattern(pat, strlen((char *) pat), &preg); |
| 1545 | if (q != 0) { |
| 1546 | // The pattern was not compiled |
| 1547 | psbs("bad search pattern: \"%s\": %s", pat, q); |
| 1548 | i = 0; // return p if pattern not compiled |
| 1549 | goto cs1; |
| 1550 | } |
| 1551 | |
| 1552 | q = p; |
| 1553 | if (range < 0) { |
| 1554 | q = p - size; |
| 1555 | if (q < text) |
| 1556 | q = text; |
| 1557 | } |
| 1558 | // search for the compiled pattern, preg, in p[] |
| 1559 | // range < 0- search backward |
| 1560 | // range > 0- search forward |
| 1561 | // 0 < start < size |
| 1562 | // re_search() < 0 not found or error |
| 1563 | // re_search() > 0 index of found pattern |
| 1564 | // struct pattern char int int int struct reg |
| 1565 | // re_search (*pattern_buffer, *string, size, start, range, *regs) |
| 1566 | i = re_search(&preg, q, size, 0, range, 0); |
| 1567 | if (i == -1) { |
| 1568 | p = 0; |
| 1569 | i = 0; // return NULL if pattern not found |
| 1570 | } |
| 1571 | cs1: |
| 1572 | if (dir == FORWARD) { |
| 1573 | p = p + i; |
| 1574 | } else { |
| 1575 | p = p - i; |
| 1576 | } |
| 1577 | return (p); |
| 1578 | #endif /*REGEX_SEARCH */ |
| 1579 | } |
| 1580 | #endif /* CONFIG_FEATURE_VI_SEARCH */ |
| 1581 | |
| 1582 | static Byte *char_insert(Byte * p, Byte c) // insert the char c at 'p' |
| 1583 | { |
| 1584 | if (c == 22) { // Is this an ctrl-V? |
| 1585 | p = stupid_insert(p, '^'); // use ^ to indicate literal next |
| 1586 | p--; // backup onto ^ |
| 1587 | refresh(FALSE); // show the ^ |
| 1588 | c = get_one_char(); |
| 1589 | *p = c; |
| 1590 | p++; |
| 1591 | file_modified = TRUE; // has the file been modified |
| 1592 | } else if (c == 27) { // Is this an ESC? |
| 1593 | cmd_mode = 0; |
| 1594 | cmdcnt = 0; |
| 1595 | end_cmd_q(); // stop adding to q |
| 1596 | strcpy((char *) status_buffer, " "); // clear the status buffer |
| 1597 | if ((p[-1] != '\n') && (dot>text)) { |
| 1598 | p--; |
| 1599 | } |
| 1600 | } else if (c == erase_char) { // Is this a BS |
| 1601 | // 123456789 |
| 1602 | if ((p[-1] != '\n') && (dot>text)) { |
| 1603 | p--; |
| 1604 | p = text_hole_delete(p, p); // shrink buffer 1 char |
| 1605 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
| 1606 | // also rmove char from last_modifying_cmd |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1607 | if (last_modifying_cmd != 0 && strlen((char *) last_modifying_cmd) > 0) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1608 | Byte *q; |
| 1609 | |
| 1610 | q = last_modifying_cmd; |
| 1611 | q[strlen((char *) q) - 1] = '\0'; // erase BS |
| 1612 | q[strlen((char *) q) - 1] = '\0'; // erase prev char |
| 1613 | } |
| 1614 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
| 1615 | } |
| 1616 | } else { |
| 1617 | // insert a char into text[] |
| 1618 | Byte *sp; // "save p" |
| 1619 | |
| 1620 | if (c == 13) |
| 1621 | c = '\n'; // translate \r to \n |
| 1622 | sp = p; // remember addr of insert |
| 1623 | p = stupid_insert(p, c); // insert the char |
| 1624 | #ifdef CONFIG_FEATURE_VI_SETOPTS |
| 1625 | if (showmatch && strchr(")]}", *sp) != NULL) { |
| 1626 | showmatching(sp); |
| 1627 | } |
| 1628 | if (autoindent && c == '\n') { // auto indent the new line |
| 1629 | Byte *q; |
| 1630 | |
| 1631 | q = prev_line(p); // use prev line as templet |
| 1632 | for (; isblnk(*q); q++) { |
| 1633 | p = stupid_insert(p, *q); // insert the char |
| 1634 | } |
| 1635 | } |
| 1636 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ |
| 1637 | } |
| 1638 | return (p); |
| 1639 | } |
| 1640 | |
| 1641 | static Byte *stupid_insert(Byte * p, Byte c) // stupidly insert the char c at 'p' |
| 1642 | { |
| 1643 | p = text_hole_make(p, 1); |
| 1644 | if (p != 0) { |
| 1645 | *p = c; |
| 1646 | file_modified = TRUE; // has the file been modified |
| 1647 | p++; |
| 1648 | } |
| 1649 | return (p); |
| 1650 | } |
| 1651 | |
| 1652 | static Byte find_range(Byte ** start, Byte ** stop, Byte c) |
| 1653 | { |
| 1654 | Byte *save_dot, *p, *q; |
| 1655 | int cnt; |
| 1656 | |
| 1657 | save_dot = dot; |
| 1658 | p = q = dot; |
| 1659 | |
| 1660 | if (strchr("cdy><", c)) { |
| 1661 | // these cmds operate on whole lines |
| 1662 | p = q = begin_line(p); |
| 1663 | for (cnt = 1; cnt < cmdcnt; cnt++) { |
| 1664 | q = next_line(q); |
| 1665 | } |
| 1666 | q = end_line(q); |
| 1667 | } else if (strchr("^%$0bBeEft", c)) { |
| 1668 | // These cmds operate on char positions |
| 1669 | do_cmd(c); // execute movement cmd |
| 1670 | q = dot; |
| 1671 | } else if (strchr("wW", c)) { |
| 1672 | do_cmd(c); // execute movement cmd |
Eric Andersen | aeea32c | 2004-02-04 11:19:44 +0000 | [diff] [blame] | 1673 | // if we are at the next word's first char |
| 1674 | // step back one char |
| 1675 | // but check the possibilities when it is true |
Eric Andersen | 5cc90ea | 2004-02-06 10:36:08 +0000 | [diff] [blame] | 1676 | if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0])) |
Eric Andersen | aeea32c | 2004-02-04 11:19:44 +0000 | [diff] [blame] | 1677 | || (ispunct(dot[-1]) && !ispunct(dot[0])) |
| 1678 | || (isalnum(dot[-1]) && !isalnum(dot[0])))) |
| 1679 | dot--; // move back off of next word |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1680 | if (dot > text && *dot == '\n') |
| 1681 | dot--; // stay off NL |
| 1682 | q = dot; |
| 1683 | } else if (strchr("H-k{", c)) { |
| 1684 | // these operate on multi-lines backwards |
| 1685 | q = end_line(dot); // find NL |
| 1686 | do_cmd(c); // execute movement cmd |
| 1687 | dot_begin(); |
| 1688 | p = dot; |
| 1689 | } else if (strchr("L+j}\r\n", c)) { |
| 1690 | // these operate on multi-lines forwards |
| 1691 | p = begin_line(dot); |
| 1692 | do_cmd(c); // execute movement cmd |
| 1693 | dot_end(); // find NL |
| 1694 | q = dot; |
| 1695 | } else { |
| 1696 | c = 27; // error- return an ESC char |
| 1697 | //break; |
| 1698 | } |
| 1699 | *start = p; |
| 1700 | *stop = q; |
| 1701 | if (q < p) { |
| 1702 | *start = q; |
| 1703 | *stop = p; |
| 1704 | } |
| 1705 | dot = save_dot; |
| 1706 | return (c); |
| 1707 | } |
| 1708 | |
| 1709 | static int st_test(Byte * p, int type, int dir, Byte * tested) |
| 1710 | { |
| 1711 | Byte c, c0, ci; |
| 1712 | int test, inc; |
| 1713 | |
| 1714 | inc = dir; |
| 1715 | c = c0 = p[0]; |
| 1716 | ci = p[inc]; |
| 1717 | test = 0; |
| 1718 | |
| 1719 | if (type == S_BEFORE_WS) { |
| 1720 | c = ci; |
| 1721 | test = ((!isspace(c)) || c == '\n'); |
| 1722 | } |
| 1723 | if (type == S_TO_WS) { |
| 1724 | c = c0; |
| 1725 | test = ((!isspace(c)) || c == '\n'); |
| 1726 | } |
| 1727 | if (type == S_OVER_WS) { |
| 1728 | c = c0; |
| 1729 | test = ((isspace(c))); |
| 1730 | } |
| 1731 | if (type == S_END_PUNCT) { |
| 1732 | c = ci; |
| 1733 | test = ((ispunct(c))); |
| 1734 | } |
| 1735 | if (type == S_END_ALNUM) { |
| 1736 | c = ci; |
| 1737 | test = ((isalnum(c)) || c == '_'); |
| 1738 | } |
| 1739 | *tested = c; |
| 1740 | return (test); |
| 1741 | } |
| 1742 | |
| 1743 | static Byte *skip_thing(Byte * p, int linecnt, int dir, int type) |
| 1744 | { |
| 1745 | Byte c; |
| 1746 | |
| 1747 | while (st_test(p, type, dir, &c)) { |
| 1748 | // make sure we limit search to correct number of lines |
| 1749 | if (c == '\n' && --linecnt < 1) |
| 1750 | break; |
| 1751 | if (dir >= 0 && p >= end - 1) |
| 1752 | break; |
| 1753 | if (dir < 0 && p <= text) |
| 1754 | break; |
| 1755 | p += dir; // move to next char |
| 1756 | } |
| 1757 | return (p); |
| 1758 | } |
| 1759 | |
| 1760 | // find matching char of pair () [] {} |
| 1761 | static Byte *find_pair(Byte * p, Byte c) |
| 1762 | { |
| 1763 | Byte match, *q; |
| 1764 | int dir, level; |
| 1765 | |
| 1766 | match = ')'; |
| 1767 | level = 1; |
| 1768 | dir = 1; // assume forward |
| 1769 | switch (c) { |
| 1770 | case '(': |
| 1771 | match = ')'; |
| 1772 | break; |
| 1773 | case '[': |
| 1774 | match = ']'; |
| 1775 | break; |
| 1776 | case '{': |
| 1777 | match = '}'; |
| 1778 | break; |
| 1779 | case ')': |
| 1780 | match = '('; |
| 1781 | dir = -1; |
| 1782 | break; |
| 1783 | case ']': |
| 1784 | match = '['; |
| 1785 | dir = -1; |
| 1786 | break; |
| 1787 | case '}': |
| 1788 | match = '{'; |
| 1789 | dir = -1; |
| 1790 | break; |
| 1791 | } |
| 1792 | for (q = p + dir; text <= q && q < end; q += dir) { |
| 1793 | // look for match, count levels of pairs (( )) |
| 1794 | if (*q == c) |
| 1795 | level++; // increase pair levels |
| 1796 | if (*q == match) |
| 1797 | level--; // reduce pair level |
| 1798 | if (level == 0) |
| 1799 | break; // found matching pair |
| 1800 | } |
| 1801 | if (level != 0) |
| 1802 | q = NULL; // indicate no match |
| 1803 | return (q); |
| 1804 | } |
| 1805 | |
| 1806 | #ifdef CONFIG_FEATURE_VI_SETOPTS |
| 1807 | // show the matching char of a pair, () [] {} |
| 1808 | static void showmatching(Byte * p) |
| 1809 | { |
| 1810 | Byte *q, *save_dot; |
| 1811 | |
| 1812 | // we found half of a pair |
| 1813 | q = find_pair(p, *p); // get loc of matching char |
| 1814 | if (q == NULL) { |
| 1815 | indicate_error('3'); // no matching char |
| 1816 | } else { |
| 1817 | // "q" now points to matching pair |
| 1818 | save_dot = dot; // remember where we are |
| 1819 | dot = q; // go to new loc |
| 1820 | refresh(FALSE); // let the user see it |
| 1821 | (void) mysleep(40); // give user some time |
| 1822 | dot = save_dot; // go back to old loc |
| 1823 | refresh(FALSE); |
| 1824 | } |
| 1825 | } |
| 1826 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ |
| 1827 | |
| 1828 | // open a hole in text[] |
| 1829 | static Byte *text_hole_make(Byte * p, int size) // at "p", make a 'size' byte hole |
| 1830 | { |
| 1831 | Byte *src, *dest; |
| 1832 | int cnt; |
| 1833 | |
| 1834 | if (size <= 0) |
| 1835 | goto thm0; |
| 1836 | src = p; |
| 1837 | dest = p + size; |
| 1838 | cnt = end - src; // the rest of buffer |
| 1839 | if (memmove(dest, src, cnt) != dest) { |
| 1840 | psbs("can't create room for new characters"); |
| 1841 | } |
| 1842 | memset(p, ' ', size); // clear new hole |
| 1843 | end = end + size; // adjust the new END |
| 1844 | file_modified = TRUE; // has the file been modified |
| 1845 | thm0: |
| 1846 | return (p); |
| 1847 | } |
| 1848 | |
| 1849 | // close a hole in text[] |
| 1850 | static Byte *text_hole_delete(Byte * p, Byte * q) // delete "p" thru "q", inclusive |
| 1851 | { |
| 1852 | Byte *src, *dest; |
| 1853 | int cnt, hole_size; |
| 1854 | |
| 1855 | // move forwards, from beginning |
| 1856 | // assume p <= q |
| 1857 | src = q + 1; |
| 1858 | dest = p; |
| 1859 | if (q < p) { // they are backward- swap them |
| 1860 | src = p + 1; |
| 1861 | dest = q; |
| 1862 | } |
| 1863 | hole_size = q - p + 1; |
| 1864 | cnt = end - src; |
| 1865 | if (src < text || src > end) |
| 1866 | goto thd0; |
| 1867 | if (dest < text || dest >= end) |
| 1868 | goto thd0; |
| 1869 | if (src >= end) |
| 1870 | goto thd_atend; // just delete the end of the buffer |
| 1871 | if (memmove(dest, src, cnt) != dest) { |
| 1872 | psbs("can't delete the character"); |
| 1873 | } |
| 1874 | thd_atend: |
| 1875 | end = end - hole_size; // adjust the new END |
| 1876 | if (dest >= end) |
| 1877 | dest = end - 1; // make sure dest in below end-1 |
| 1878 | if (end <= text) |
| 1879 | dest = end = text; // keep pointers valid |
| 1880 | file_modified = TRUE; // has the file been modified |
| 1881 | thd0: |
| 1882 | return (dest); |
| 1883 | } |
| 1884 | |
| 1885 | // copy text into register, then delete text. |
| 1886 | // if dist <= 0, do not include, or go past, a NewLine |
| 1887 | // |
| 1888 | static Byte *yank_delete(Byte * start, Byte * stop, int dist, int yf) |
| 1889 | { |
| 1890 | Byte *p; |
| 1891 | |
| 1892 | // make sure start <= stop |
| 1893 | if (start > stop) { |
| 1894 | // they are backwards, reverse them |
| 1895 | p = start; |
| 1896 | start = stop; |
| 1897 | stop = p; |
| 1898 | } |
| 1899 | if (dist <= 0) { |
| 1900 | // we can not cross NL boundaries |
| 1901 | p = start; |
| 1902 | if (*p == '\n') |
| 1903 | return (p); |
| 1904 | // dont go past a NewLine |
| 1905 | for (; p + 1 <= stop; p++) { |
| 1906 | if (p[1] == '\n') { |
| 1907 | stop = p; // "stop" just before NewLine |
| 1908 | break; |
| 1909 | } |
| 1910 | } |
| 1911 | } |
| 1912 | p = start; |
| 1913 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 1914 | text_yank(start, stop, YDreg); |
| 1915 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 1916 | if (yf == YANKDEL) { |
| 1917 | p = text_hole_delete(start, stop); |
| 1918 | } // delete lines |
| 1919 | return (p); |
| 1920 | } |
| 1921 | |
| 1922 | static void show_help(void) |
| 1923 | { |
| 1924 | puts("These features are available:" |
| 1925 | #ifdef CONFIG_FEATURE_VI_SEARCH |
| 1926 | "\n\tPattern searches with / and ?" |
| 1927 | #endif /* CONFIG_FEATURE_VI_SEARCH */ |
| 1928 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
| 1929 | "\n\tLast command repeat with \'.\'" |
| 1930 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
| 1931 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 1932 | "\n\tLine marking with 'x" |
| 1933 | "\n\tNamed buffers with \"x" |
| 1934 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 1935 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 1936 | "\n\tReadonly if vi is called as \"view\"" |
| 1937 | "\n\tReadonly with -R command line arg" |
| 1938 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 1939 | #ifdef CONFIG_FEATURE_VI_SET |
| 1940 | "\n\tSome colon mode commands with \':\'" |
| 1941 | #endif /* CONFIG_FEATURE_VI_SET */ |
| 1942 | #ifdef CONFIG_FEATURE_VI_SETOPTS |
| 1943 | "\n\tSettable options with \":set\"" |
| 1944 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ |
| 1945 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS |
| 1946 | "\n\tSignal catching- ^C" |
| 1947 | "\n\tJob suspend and resume with ^Z" |
| 1948 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ |
| 1949 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE |
| 1950 | "\n\tAdapt to window re-sizes" |
| 1951 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ |
| 1952 | ); |
| 1953 | } |
| 1954 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1955 | static inline void print_literal(Byte * buf, Byte * s) // copy s to buf, convert unprintable |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1956 | { |
| 1957 | Byte c, b[2]; |
| 1958 | |
| 1959 | b[1] = '\0'; |
| 1960 | strcpy((char *) buf, ""); // init buf |
| 1961 | if (strlen((char *) s) <= 0) |
| 1962 | s = (Byte *) "(NULL)"; |
| 1963 | for (; *s > '\0'; s++) { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1964 | int c_is_no_print; |
| 1965 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1966 | c = *s; |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1967 | c_is_no_print = c > 127 && !Isprint(c); |
| 1968 | if (c_is_no_print) { |
| 1969 | strcat((char *) buf, SOn); |
| 1970 | c = '.'; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1971 | } |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1972 | if (c < ' ' || c == 127) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1973 | strcat((char *) buf, "^"); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1974 | if(c == 127) |
| 1975 | c = '?'; |
| 1976 | else |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1977 | c += '@'; |
| 1978 | } |
| 1979 | b[0] = c; |
| 1980 | strcat((char *) buf, (char *) b); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 1981 | if (c_is_no_print) |
| 1982 | strcat((char *) buf, SOs); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1983 | if (*s == '\n') { |
| 1984 | strcat((char *) buf, "$"); |
| 1985 | } |
| 1986 | } |
| 1987 | } |
| 1988 | |
| 1989 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
| 1990 | static void start_new_cmd_q(Byte c) |
| 1991 | { |
| 1992 | // release old cmd |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 1993 | free(last_modifying_cmd); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 1994 | // get buffer for new cmd |
| 1995 | last_modifying_cmd = (Byte *) xmalloc(BUFSIZ); |
| 1996 | memset(last_modifying_cmd, '\0', BUFSIZ); // clear new cmd queue |
| 1997 | // if there is a current cmd count put it in the buffer first |
| 1998 | if (cmdcnt > 0) |
| 1999 | sprintf((char *) last_modifying_cmd, "%d", cmdcnt); |
| 2000 | // save char c onto queue |
| 2001 | last_modifying_cmd[strlen((char *) last_modifying_cmd)] = c; |
| 2002 | adding2q = 1; |
| 2003 | return; |
| 2004 | } |
| 2005 | |
| 2006 | static void end_cmd_q(void) |
| 2007 | { |
| 2008 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 2009 | YDreg = 26; // go back to default Yank/Delete reg |
| 2010 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 2011 | adding2q = 0; |
| 2012 | return; |
| 2013 | } |
| 2014 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
| 2015 | |
| 2016 | #if defined(CONFIG_FEATURE_VI_YANKMARK) || defined(CONFIG_FEATURE_VI_COLON) || defined(CONFIG_FEATURE_VI_CRASHME) |
| 2017 | static Byte *string_insert(Byte * p, Byte * s) // insert the string at 'p' |
| 2018 | { |
| 2019 | int cnt, i; |
| 2020 | |
| 2021 | i = strlen((char *) s); |
| 2022 | p = text_hole_make(p, i); |
| 2023 | strncpy((char *) p, (char *) s, i); |
| 2024 | for (cnt = 0; *s != '\0'; s++) { |
| 2025 | if (*s == '\n') |
| 2026 | cnt++; |
| 2027 | } |
| 2028 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 2029 | psb("Put %d lines (%d chars) from [%c]", cnt, i, what_reg()); |
| 2030 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 2031 | return (p); |
| 2032 | } |
| 2033 | #endif /* CONFIG_FEATURE_VI_YANKMARK || CONFIG_FEATURE_VI_COLON || CONFIG_FEATURE_VI_CRASHME */ |
| 2034 | |
| 2035 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
| 2036 | static Byte *text_yank(Byte * p, Byte * q, int dest) // copy text into a register |
| 2037 | { |
| 2038 | Byte *t; |
| 2039 | int cnt; |
| 2040 | |
| 2041 | if (q < p) { // they are backwards- reverse them |
| 2042 | t = q; |
| 2043 | q = p; |
| 2044 | p = t; |
| 2045 | } |
| 2046 | cnt = q - p + 1; |
| 2047 | t = reg[dest]; |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 2048 | free(t); // if already a yank register, free it |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2049 | t = (Byte *) xmalloc(cnt + 1); // get a new register |
| 2050 | memset(t, '\0', cnt + 1); // clear new text[] |
| 2051 | strncpy((char *) t, (char *) p, cnt); // copy text[] into bufer |
| 2052 | reg[dest] = t; |
| 2053 | return (p); |
| 2054 | } |
| 2055 | |
| 2056 | static Byte what_reg(void) |
| 2057 | { |
| 2058 | Byte c; |
| 2059 | int i; |
| 2060 | |
| 2061 | i = 0; |
| 2062 | c = 'D'; // default to D-reg |
| 2063 | if (0 <= YDreg && YDreg <= 25) |
| 2064 | c = 'a' + (Byte) YDreg; |
| 2065 | if (YDreg == 26) |
| 2066 | c = 'D'; |
| 2067 | if (YDreg == 27) |
| 2068 | c = 'U'; |
| 2069 | return (c); |
| 2070 | } |
| 2071 | |
| 2072 | static void check_context(Byte cmd) |
| 2073 | { |
| 2074 | // A context is defined to be "modifying text" |
| 2075 | // Any modifying command establishes a new context. |
| 2076 | |
| 2077 | if (dot < context_start || dot > context_end) { |
| 2078 | if (strchr((char *) modifying_cmds, cmd) != NULL) { |
| 2079 | // we are trying to modify text[]- make this the current context |
| 2080 | mark[27] = mark[26]; // move cur to prev |
| 2081 | mark[26] = dot; // move local to cur |
| 2082 | context_start = prev_line(prev_line(dot)); |
| 2083 | context_end = next_line(next_line(dot)); |
| 2084 | //loiter= start_loiter= now; |
| 2085 | } |
| 2086 | } |
| 2087 | return; |
| 2088 | } |
| 2089 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2090 | static inline Byte *swap_context(Byte * p) // goto new context for '' command make this the current context |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2091 | { |
| 2092 | Byte *tmp; |
| 2093 | |
| 2094 | // the current context is in mark[26] |
| 2095 | // the previous context is in mark[27] |
| 2096 | // only swap context if other context is valid |
| 2097 | if (text <= mark[27] && mark[27] <= end - 1) { |
| 2098 | tmp = mark[27]; |
| 2099 | mark[27] = mark[26]; |
| 2100 | mark[26] = tmp; |
| 2101 | p = mark[26]; // where we are going- previous context |
| 2102 | context_start = prev_line(prev_line(prev_line(p))); |
| 2103 | context_end = next_line(next_line(next_line(p))); |
| 2104 | } |
| 2105 | return (p); |
| 2106 | } |
| 2107 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
| 2108 | |
| 2109 | static int isblnk(Byte c) // is the char a blank or tab |
| 2110 | { |
| 2111 | return (c == ' ' || c == '\t'); |
| 2112 | } |
| 2113 | |
| 2114 | //----- Set terminal attributes -------------------------------- |
| 2115 | static void rawmode(void) |
| 2116 | { |
| 2117 | tcgetattr(0, &term_orig); |
| 2118 | term_vi = term_orig; |
| 2119 | term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's |
| 2120 | term_vi.c_iflag &= (~IXON & ~ICRNL); |
| 2121 | term_vi.c_oflag &= (~ONLCR); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2122 | term_vi.c_cc[VMIN] = 1; |
| 2123 | term_vi.c_cc[VTIME] = 0; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2124 | erase_char = term_vi.c_cc[VERASE]; |
| 2125 | tcsetattr(0, TCSANOW, &term_vi); |
| 2126 | } |
| 2127 | |
| 2128 | static void cookmode(void) |
| 2129 | { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2130 | fflush(stdout); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2131 | tcsetattr(0, TCSANOW, &term_orig); |
| 2132 | } |
| 2133 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2134 | //----- Come here when we get a window resize signal --------- |
| 2135 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS |
| 2136 | static void winch_sig(int sig) |
| 2137 | { |
| 2138 | signal(SIGWINCH, winch_sig); |
| 2139 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE |
| 2140 | window_size_get(0); |
| 2141 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ |
| 2142 | new_screen(rows, columns); // get memory for virtual screen |
| 2143 | redraw(TRUE); // re-draw the screen |
| 2144 | } |
| 2145 | |
| 2146 | //----- Come here when we get a continue signal ------------------- |
| 2147 | static void cont_sig(int sig) |
| 2148 | { |
| 2149 | rawmode(); // terminal to "raw" |
| 2150 | *status_buffer = '\0'; // clear the status buffer |
| 2151 | redraw(TRUE); // re-draw the screen |
| 2152 | |
| 2153 | signal(SIGTSTP, suspend_sig); |
| 2154 | signal(SIGCONT, SIG_DFL); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2155 | kill(my_pid, SIGCONT); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2156 | } |
| 2157 | |
| 2158 | //----- Come here when we get a Suspend signal ------------------- |
| 2159 | static void suspend_sig(int sig) |
| 2160 | { |
| 2161 | place_cursor(rows - 1, 0, FALSE); // go to bottom of screen |
| 2162 | clear_to_eol(); // Erase to end of line |
| 2163 | cookmode(); // terminal to "cooked" |
| 2164 | |
| 2165 | signal(SIGCONT, cont_sig); |
| 2166 | signal(SIGTSTP, SIG_DFL); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2167 | kill(my_pid, SIGTSTP); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2168 | } |
| 2169 | |
| 2170 | //----- Come here when we get a signal --------------------------- |
| 2171 | static void catch_sig(int sig) |
| 2172 | { |
| 2173 | signal(SIGHUP, catch_sig); |
| 2174 | signal(SIGINT, catch_sig); |
| 2175 | signal(SIGTERM, catch_sig); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2176 | signal(SIGALRM, catch_sig); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2177 | if(sig) |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2178 | longjmp(restart, sig); |
| 2179 | } |
| 2180 | |
| 2181 | //----- Come here when we get a core dump signal ----------------- |
| 2182 | static void core_sig(int sig) |
| 2183 | { |
| 2184 | signal(SIGQUIT, core_sig); |
| 2185 | signal(SIGILL, core_sig); |
| 2186 | signal(SIGTRAP, core_sig); |
| 2187 | signal(SIGIOT, core_sig); |
| 2188 | signal(SIGABRT, core_sig); |
| 2189 | signal(SIGFPE, core_sig); |
| 2190 | signal(SIGBUS, core_sig); |
| 2191 | signal(SIGSEGV, core_sig); |
| 2192 | #ifdef SIGSYS |
| 2193 | signal(SIGSYS, core_sig); |
| 2194 | #endif |
| 2195 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2196 | if(sig) { // signaled |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2197 | dot = bound_dot(dot); // make sure "dot" is valid |
| 2198 | |
| 2199 | longjmp(restart, sig); |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2200 | } |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2201 | } |
| 2202 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ |
| 2203 | |
| 2204 | static int mysleep(int hund) // sleep for 'h' 1/100 seconds |
| 2205 | { |
| 2206 | // Don't hang- Wait 5/100 seconds- 1 Sec= 1000000 |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2207 | fflush(stdout); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2208 | FD_ZERO(&rfds); |
| 2209 | FD_SET(0, &rfds); |
| 2210 | tv.tv_sec = 0; |
| 2211 | tv.tv_usec = hund * 10000; |
| 2212 | select(1, &rfds, NULL, NULL, &tv); |
| 2213 | return (FD_ISSET(0, &rfds)); |
| 2214 | } |
| 2215 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2216 | static Byte readbuffer[BUFSIZ]; |
| 2217 | static int readed_for_parse; |
| 2218 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2219 | //----- IO Routines -------------------------------------------- |
| 2220 | static Byte readit(void) // read (maybe cursor) key from stdin |
| 2221 | { |
| 2222 | Byte c; |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2223 | int n; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2224 | struct esc_cmds { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2225 | const char *seq; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2226 | Byte val; |
| 2227 | }; |
| 2228 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2229 | static const struct esc_cmds esccmds[] = { |
| 2230 | {"OA", (Byte) VI_K_UP}, // cursor key Up |
| 2231 | {"OB", (Byte) VI_K_DOWN}, // cursor key Down |
| 2232 | {"OC", (Byte) VI_K_RIGHT}, // Cursor Key Right |
| 2233 | {"OD", (Byte) VI_K_LEFT}, // cursor key Left |
| 2234 | {"OH", (Byte) VI_K_HOME}, // Cursor Key Home |
| 2235 | {"OF", (Byte) VI_K_END}, // Cursor Key End |
| 2236 | {"[A", (Byte) VI_K_UP}, // cursor key Up |
| 2237 | {"[B", (Byte) VI_K_DOWN}, // cursor key Down |
| 2238 | {"[C", (Byte) VI_K_RIGHT}, // Cursor Key Right |
| 2239 | {"[D", (Byte) VI_K_LEFT}, // cursor key Left |
| 2240 | {"[H", (Byte) VI_K_HOME}, // Cursor Key Home |
| 2241 | {"[F", (Byte) VI_K_END}, // Cursor Key End |
| 2242 | {"[1~", (Byte) VI_K_HOME}, // Cursor Key Home |
| 2243 | {"[2~", (Byte) VI_K_INSERT}, // Cursor Key Insert |
| 2244 | {"[4~", (Byte) VI_K_END}, // Cursor Key End |
| 2245 | {"[5~", (Byte) VI_K_PAGEUP}, // Cursor Key Page Up |
| 2246 | {"[6~", (Byte) VI_K_PAGEDOWN}, // Cursor Key Page Down |
| 2247 | {"OP", (Byte) VI_K_FUN1}, // Function Key F1 |
| 2248 | {"OQ", (Byte) VI_K_FUN2}, // Function Key F2 |
| 2249 | {"OR", (Byte) VI_K_FUN3}, // Function Key F3 |
| 2250 | {"OS", (Byte) VI_K_FUN4}, // Function Key F4 |
| 2251 | {"[15~", (Byte) VI_K_FUN5}, // Function Key F5 |
| 2252 | {"[17~", (Byte) VI_K_FUN6}, // Function Key F6 |
| 2253 | {"[18~", (Byte) VI_K_FUN7}, // Function Key F7 |
| 2254 | {"[19~", (Byte) VI_K_FUN8}, // Function Key F8 |
| 2255 | {"[20~", (Byte) VI_K_FUN9}, // Function Key F9 |
| 2256 | {"[21~", (Byte) VI_K_FUN10}, // Function Key F10 |
| 2257 | {"[23~", (Byte) VI_K_FUN11}, // Function Key F11 |
| 2258 | {"[24~", (Byte) VI_K_FUN12}, // Function Key F12 |
| 2259 | {"[11~", (Byte) VI_K_FUN1}, // Function Key F1 |
| 2260 | {"[12~", (Byte) VI_K_FUN2}, // Function Key F2 |
| 2261 | {"[13~", (Byte) VI_K_FUN3}, // Function Key F3 |
| 2262 | {"[14~", (Byte) VI_K_FUN4}, // Function Key F4 |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2263 | }; |
| 2264 | |
| 2265 | #define ESCCMDS_COUNT (sizeof(esccmds)/sizeof(struct esc_cmds)) |
| 2266 | |
| 2267 | (void) alarm(0); // turn alarm OFF while we wait for input |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2268 | fflush(stdout); |
| 2269 | n = readed_for_parse; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2270 | // get input from User- are there already input chars in Q? |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2271 | if (n <= 0) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2272 | ri0: |
| 2273 | // the Q is empty, wait for a typed char |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2274 | n = read(0, readbuffer, BUFSIZ - 1); |
| 2275 | if (n < 0) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2276 | if (errno == EINTR) |
| 2277 | goto ri0; // interrupted sys call |
| 2278 | if (errno == EBADF) |
| 2279 | editing = 0; |
| 2280 | if (errno == EFAULT) |
| 2281 | editing = 0; |
| 2282 | if (errno == EINVAL) |
| 2283 | editing = 0; |
| 2284 | if (errno == EIO) |
| 2285 | editing = 0; |
| 2286 | errno = 0; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2287 | } |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2288 | if(n <= 0) |
| 2289 | return 0; // error |
| 2290 | if (readbuffer[0] == 27) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2291 | // This is an ESC char. Is this Esc sequence? |
| 2292 | // Could be bare Esc key. See if there are any |
| 2293 | // more chars to read after the ESC. This would |
| 2294 | // be a Function or Cursor Key sequence. |
| 2295 | FD_ZERO(&rfds); |
| 2296 | FD_SET(0, &rfds); |
| 2297 | tv.tv_sec = 0; |
| 2298 | tv.tv_usec = 50000; // Wait 5/100 seconds- 1 Sec=1000000 |
| 2299 | |
| 2300 | // keep reading while there are input chars and room in buffer |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2301 | while (select(1, &rfds, NULL, NULL, &tv) > 0 && n <= (BUFSIZ - 5)) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2302 | // read the rest of the ESC string |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2303 | int r = read(0, (void *) (readbuffer + n), BUFSIZ - n); |
| 2304 | if (r > 0) { |
| 2305 | n += r; |
| 2306 | } |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2307 | } |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2308 | } |
| 2309 | readed_for_parse = n; |
| 2310 | } |
| 2311 | c = readbuffer[0]; |
| 2312 | if(c == 27 && n > 1) { |
| 2313 | // Maybe cursor or function key? |
| 2314 | const struct esc_cmds *eindex; |
| 2315 | |
| 2316 | for (eindex = esccmds; eindex < &esccmds[ESCCMDS_COUNT]; eindex++) { |
| 2317 | int cnt = strlen(eindex->seq); |
| 2318 | |
| 2319 | if(n <= cnt) |
| 2320 | continue; |
| 2321 | if(strncmp(eindex->seq, (char *) readbuffer + 1, cnt)) |
| 2322 | continue; |
| 2323 | // is a Cursor key- put derived value back into Q |
| 2324 | c = eindex->val; |
| 2325 | // for squeeze out the ESC sequence |
| 2326 | n = cnt + 1; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2327 | break; |
| 2328 | } |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2329 | if(eindex == &esccmds[ESCCMDS_COUNT]) { |
| 2330 | /* defined ESC sequence not found, set only one ESC */ |
| 2331 | n = 1; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2332 | } |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2333 | } else { |
| 2334 | n = 1; |
| 2335 | } |
| 2336 | // remove key sequence from Q |
| 2337 | readed_for_parse -= n; |
| 2338 | memmove(readbuffer, readbuffer + n, BUFSIZ - n); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2339 | (void) alarm(3); // we are done waiting for input, turn alarm ON |
| 2340 | return (c); |
| 2341 | } |
| 2342 | |
| 2343 | //----- IO Routines -------------------------------------------- |
| 2344 | static Byte get_one_char() |
| 2345 | { |
| 2346 | static Byte c; |
| 2347 | |
| 2348 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
| 2349 | // ! adding2q && ioq == 0 read() |
| 2350 | // ! adding2q && ioq != 0 *ioq |
| 2351 | // adding2q *last_modifying_cmd= read() |
| 2352 | if (!adding2q) { |
| 2353 | // we are not adding to the q. |
| 2354 | // but, we may be reading from a q |
| 2355 | if (ioq == 0) { |
| 2356 | // there is no current q, read from STDIN |
| 2357 | c = readit(); // get the users input |
| 2358 | } else { |
| 2359 | // there is a queue to get chars from first |
| 2360 | c = *ioq++; |
| 2361 | if (c == '\0') { |
| 2362 | // the end of the q, read from STDIN |
| 2363 | free(ioq_start); |
| 2364 | ioq_start = ioq = 0; |
| 2365 | c = readit(); // get the users input |
| 2366 | } |
| 2367 | } |
| 2368 | } else { |
| 2369 | // adding STDIN chars to q |
| 2370 | c = readit(); // get the users input |
| 2371 | if (last_modifying_cmd != 0) { |
Eric Andersen | fda2b7f | 2002-10-26 10:19:19 +0000 | [diff] [blame] | 2372 | int len = strlen((char *) last_modifying_cmd); |
| 2373 | if (len + 1 >= BUFSIZ) { |
| 2374 | psbs("last_modifying_cmd overrun"); |
| 2375 | } else { |
| 2376 | // add new char to q |
| 2377 | last_modifying_cmd[len] = c; |
| 2378 | } |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2379 | } |
| 2380 | } |
| 2381 | #else /* CONFIG_FEATURE_VI_DOT_CMD */ |
| 2382 | c = readit(); // get the users input |
| 2383 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
| 2384 | return (c); // return the char, where ever it came from |
| 2385 | } |
| 2386 | |
| 2387 | static Byte *get_input_line(Byte * prompt) // get input line- use "status line" |
| 2388 | { |
| 2389 | Byte buf[BUFSIZ]; |
| 2390 | Byte c; |
| 2391 | int i; |
| 2392 | static Byte *obufp = NULL; |
| 2393 | |
| 2394 | strcpy((char *) buf, (char *) prompt); |
| 2395 | *status_buffer = '\0'; // clear the status buffer |
| 2396 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen |
| 2397 | clear_to_eol(); // clear the line |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2398 | write1(prompt); // write out the :, /, or ? prompt |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2399 | |
| 2400 | for (i = strlen((char *) buf); i < BUFSIZ;) { |
| 2401 | c = get_one_char(); // read user input |
| 2402 | if (c == '\n' || c == '\r' || c == 27) |
| 2403 | break; // is this end of input |
| 2404 | if (c == erase_char) { // user wants to erase prev char |
| 2405 | i--; // backup to prev char |
| 2406 | buf[i] = '\0'; // erase the char |
| 2407 | buf[i + 1] = '\0'; // null terminate buffer |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2408 | write1("\b \b"); // erase char on screen |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2409 | if (i <= 0) { // user backs up before b-o-l, exit |
| 2410 | break; |
| 2411 | } |
| 2412 | } else { |
| 2413 | buf[i] = c; // save char in buffer |
| 2414 | buf[i + 1] = '\0'; // make sure buffer is null terminated |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2415 | putchar(c); // echo the char back to user |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2416 | i++; |
| 2417 | } |
| 2418 | } |
| 2419 | refresh(FALSE); |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 2420 | free(obufp); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 2421 | obufp = (Byte *) bb_xstrdup((char *) buf); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2422 | return (obufp); |
| 2423 | } |
| 2424 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2425 | static int file_size(const Byte * fn) // what is the byte size of "fn" |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2426 | { |
| 2427 | struct stat st_buf; |
| 2428 | int cnt, sr; |
| 2429 | |
| 2430 | if (fn == 0 || strlen(fn) <= 0) |
| 2431 | return (-1); |
| 2432 | cnt = -1; |
| 2433 | sr = stat((char *) fn, &st_buf); // see if file exists |
| 2434 | if (sr >= 0) { |
| 2435 | cnt = (int) st_buf.st_size; |
| 2436 | } |
| 2437 | return (cnt); |
| 2438 | } |
| 2439 | |
| 2440 | static int file_insert(Byte * fn, Byte * p, int size) |
| 2441 | { |
| 2442 | int fd, cnt; |
| 2443 | |
| 2444 | cnt = -1; |
| 2445 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 2446 | readonly = FALSE; |
| 2447 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 2448 | if (fn == 0 || strlen((char*) fn) <= 0) { |
| 2449 | psbs("No filename given"); |
| 2450 | goto fi0; |
| 2451 | } |
| 2452 | if (size == 0) { |
| 2453 | // OK- this is just a no-op |
| 2454 | cnt = 0; |
| 2455 | goto fi0; |
| 2456 | } |
| 2457 | if (size < 0) { |
| 2458 | psbs("Trying to insert a negative number (%d) of characters", size); |
| 2459 | goto fi0; |
| 2460 | } |
| 2461 | if (p < text || p > end) { |
| 2462 | psbs("Trying to insert file outside of memory"); |
| 2463 | goto fi0; |
| 2464 | } |
| 2465 | |
| 2466 | // see if we can open the file |
| 2467 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 2468 | if (vi_readonly) goto fi1; // do not try write-mode |
| 2469 | #endif |
| 2470 | fd = open((char *) fn, O_RDWR); // assume read & write |
| 2471 | if (fd < 0) { |
| 2472 | // could not open for writing- maybe file is read only |
| 2473 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 2474 | fi1: |
| 2475 | #endif |
| 2476 | fd = open((char *) fn, O_RDONLY); // try read-only |
| 2477 | if (fd < 0) { |
| 2478 | psbs("\"%s\" %s", fn, "could not open file"); |
| 2479 | goto fi0; |
| 2480 | } |
| 2481 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 2482 | // got the file- read-only |
| 2483 | readonly = TRUE; |
| 2484 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 2485 | } |
| 2486 | p = text_hole_make(p, size); |
| 2487 | cnt = read(fd, p, size); |
| 2488 | close(fd); |
| 2489 | if (cnt < 0) { |
| 2490 | cnt = -1; |
| 2491 | p = text_hole_delete(p, p + size - 1); // un-do buffer insert |
| 2492 | psbs("could not read file \"%s\"", fn); |
| 2493 | } else if (cnt < size) { |
| 2494 | // There was a partial read, shrink unused space text[] |
| 2495 | p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert |
| 2496 | psbs("could not read all of file \"%s\"", fn); |
| 2497 | } |
| 2498 | if (cnt >= size) |
| 2499 | file_modified = TRUE; |
| 2500 | fi0: |
| 2501 | return (cnt); |
| 2502 | } |
| 2503 | |
| 2504 | static int file_write(Byte * fn, Byte * first, Byte * last) |
| 2505 | { |
| 2506 | int fd, cnt, charcnt; |
| 2507 | |
| 2508 | if (fn == 0) { |
| 2509 | psbs("No current filename"); |
| 2510 | return (-1); |
| 2511 | } |
| 2512 | charcnt = 0; |
| 2513 | // FIXIT- use the correct umask() |
| 2514 | fd = open((char *) fn, (O_WRONLY | O_CREAT | O_TRUNC), 0664); |
| 2515 | if (fd < 0) |
| 2516 | return (-1); |
| 2517 | cnt = last - first + 1; |
| 2518 | charcnt = write(fd, first, cnt); |
| 2519 | if (charcnt == cnt) { |
| 2520 | // good write |
| 2521 | //file_modified= FALSE; // the file has not been modified |
| 2522 | } else { |
| 2523 | charcnt = 0; |
| 2524 | } |
| 2525 | close(fd); |
| 2526 | return (charcnt); |
| 2527 | } |
| 2528 | |
| 2529 | //----- Terminal Drawing --------------------------------------- |
| 2530 | // The terminal is made up of 'rows' line of 'columns' columns. |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame^] | 2531 | // classically this would be 24 x 80. |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2532 | // screen coordinates |
| 2533 | // 0,0 ... 0,79 |
| 2534 | // 1,0 ... 1,79 |
| 2535 | // . ... . |
| 2536 | // . ... . |
| 2537 | // 22,0 ... 22,79 |
| 2538 | // 23,0 ... 23,79 status line |
| 2539 | // |
| 2540 | |
| 2541 | //----- Move the cursor to row x col (count from 0, not 1) ------- |
| 2542 | static void place_cursor(int row, int col, int opti) |
| 2543 | { |
| 2544 | char cm1[BUFSIZ]; |
| 2545 | char *cm; |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2546 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR |
| 2547 | char cm2[BUFSIZ]; |
| 2548 | Byte *screenp; |
| 2549 | // char cm3[BUFSIZ]; |
| 2550 | int Rrow= last_row; |
| 2551 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2552 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2553 | memset(cm1, '\0', BUFSIZ - 1); // clear the buffer |
| 2554 | |
| 2555 | if (row < 0) row = 0; |
| 2556 | if (row >= rows) row = rows - 1; |
| 2557 | if (col < 0) col = 0; |
| 2558 | if (col >= columns) col = columns - 1; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2559 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2560 | //----- 1. Try the standard terminal ESC sequence |
| 2561 | sprintf((char *) cm1, CMrc, row + 1, col + 1); |
| 2562 | cm= cm1; |
| 2563 | if (! opti) goto pc0; |
| 2564 | |
| 2565 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR |
| 2566 | //----- find the minimum # of chars to move cursor ------------- |
| 2567 | //----- 2. Try moving with discreet chars (Newline, [back]space, ...) |
| 2568 | memset(cm2, '\0', BUFSIZ - 1); // clear the buffer |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2569 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2570 | // move to the correct row |
| 2571 | while (row < Rrow) { |
| 2572 | // the cursor has to move up |
| 2573 | strcat(cm2, CMup); |
| 2574 | Rrow--; |
| 2575 | } |
| 2576 | while (row > Rrow) { |
| 2577 | // the cursor has to move down |
| 2578 | strcat(cm2, CMdown); |
| 2579 | Rrow++; |
| 2580 | } |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2581 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2582 | // now move to the correct column |
| 2583 | strcat(cm2, "\r"); // start at col 0 |
| 2584 | // just send out orignal source char to get to correct place |
| 2585 | screenp = &screen[row * columns]; // start of screen line |
| 2586 | strncat(cm2, screenp, col); |
| 2587 | |
| 2588 | //----- 3. Try some other way of moving cursor |
| 2589 | //--------------------------------------------- |
| 2590 | |
| 2591 | // pick the shortest cursor motion to send out |
| 2592 | cm= cm1; |
| 2593 | if (strlen(cm2) < strlen(cm)) { |
| 2594 | cm= cm2; |
| 2595 | } /* else if (strlen(cm3) < strlen(cm)) { |
| 2596 | cm= cm3; |
| 2597 | } */ |
| 2598 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ |
| 2599 | pc0: |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2600 | write1(cm); // move the cursor |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2601 | } |
| 2602 | |
| 2603 | //----- Erase from cursor to end of line ----------------------- |
| 2604 | static void clear_to_eol() |
| 2605 | { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2606 | write1(Ceol); // Erase from cursor to end of line |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2607 | } |
| 2608 | |
| 2609 | //----- Erase from cursor to end of screen ----------------------- |
| 2610 | static void clear_to_eos() |
| 2611 | { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2612 | write1(Ceos); // Erase from cursor to end of screen |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2613 | } |
| 2614 | |
| 2615 | //----- Start standout mode ------------------------------------ |
| 2616 | static void standout_start() // send "start reverse video" sequence |
| 2617 | { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2618 | write1(SOs); // Start reverse video mode |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2619 | } |
| 2620 | |
| 2621 | //----- End standout mode -------------------------------------- |
| 2622 | static void standout_end() // send "end reverse video" sequence |
| 2623 | { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2624 | write1(SOn); // End reverse video mode |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2625 | } |
| 2626 | |
| 2627 | //----- Flash the screen -------------------------------------- |
| 2628 | static void flash(int h) |
| 2629 | { |
| 2630 | standout_start(); // send "start reverse video" sequence |
| 2631 | redraw(TRUE); |
| 2632 | (void) mysleep(h); |
| 2633 | standout_end(); // send "end reverse video" sequence |
| 2634 | redraw(TRUE); |
| 2635 | } |
| 2636 | |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2637 | static void Indicate_Error(void) |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2638 | { |
| 2639 | #ifdef CONFIG_FEATURE_VI_CRASHME |
| 2640 | if (crashme > 0) |
| 2641 | return; // generate a random command |
| 2642 | #endif /* CONFIG_FEATURE_VI_CRASHME */ |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2643 | if (!err_method) { |
| 2644 | write1(bell); // send out a bell character |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2645 | } else { |
| 2646 | flash(10); |
| 2647 | } |
| 2648 | } |
| 2649 | |
| 2650 | //----- Screen[] Routines -------------------------------------- |
| 2651 | //----- Erase the Screen[] memory ------------------------------ |
| 2652 | static void screen_erase() |
| 2653 | { |
| 2654 | memset(screen, ' ', screensize); // clear new screen |
| 2655 | } |
| 2656 | |
| 2657 | //----- Draw the status line at bottom of the screen ------------- |
| 2658 | static void show_status_line(void) |
| 2659 | { |
| 2660 | static int last_cksum; |
| 2661 | int l, cnt, cksum; |
| 2662 | |
| 2663 | cnt = strlen((char *) status_buffer); |
| 2664 | for (cksum= l= 0; l < cnt; l++) { cksum += (int)(status_buffer[l]); } |
| 2665 | // don't write the status line unless it changes |
| 2666 | if (cnt > 0 && last_cksum != cksum) { |
| 2667 | last_cksum= cksum; // remember if we have seen this line |
| 2668 | place_cursor(rows - 1, 0, FALSE); // put cursor on status line |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2669 | write1(status_buffer); |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2670 | clear_to_eol(); |
| 2671 | place_cursor(crow, ccol, FALSE); // put cursor back in correct place |
| 2672 | } |
| 2673 | } |
| 2674 | |
| 2675 | //----- format the status buffer, the bottom line of screen ------ |
| 2676 | // print status buffer, with STANDOUT mode |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2677 | static void psbs(const char *format, ...) |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2678 | { |
| 2679 | va_list args; |
| 2680 | |
| 2681 | va_start(args, format); |
| 2682 | strcpy((char *) status_buffer, SOs); // Terminal standout mode on |
| 2683 | vsprintf((char *) status_buffer + strlen((char *) status_buffer), format, |
| 2684 | args); |
| 2685 | strcat((char *) status_buffer, SOn); // Terminal standout mode off |
| 2686 | va_end(args); |
| 2687 | |
| 2688 | return; |
| 2689 | } |
| 2690 | |
| 2691 | // print status buffer |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2692 | static void psb(const char *format, ...) |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2693 | { |
| 2694 | va_list args; |
| 2695 | |
| 2696 | va_start(args, format); |
| 2697 | vsprintf((char *) status_buffer, format, args); |
| 2698 | va_end(args); |
| 2699 | return; |
| 2700 | } |
| 2701 | |
| 2702 | static void ni(Byte * s) // display messages |
| 2703 | { |
| 2704 | Byte buf[BUFSIZ]; |
| 2705 | |
| 2706 | print_literal(buf, s); |
| 2707 | psbs("\'%s\' is not implemented", buf); |
| 2708 | } |
| 2709 | |
| 2710 | static void edit_status(void) // show file status on status line |
| 2711 | { |
| 2712 | int cur, tot, percent; |
| 2713 | |
| 2714 | cur = count_lines(text, dot); |
| 2715 | tot = count_lines(text, end - 1); |
| 2716 | // current line percent |
| 2717 | // ------------- ~~ ---------- |
| 2718 | // total lines 100 |
| 2719 | if (tot > 0) { |
| 2720 | percent = (100 * cur) / tot; |
| 2721 | } else { |
| 2722 | cur = tot = 0; |
| 2723 | percent = 100; |
| 2724 | } |
| 2725 | psb("\"%s\"" |
| 2726 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 2727 | "%s" |
| 2728 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 2729 | "%s line %d of %d --%d%%--", |
| 2730 | (cfn != 0 ? (char *) cfn : "No file"), |
| 2731 | #ifdef CONFIG_FEATURE_VI_READONLY |
| 2732 | ((vi_readonly || readonly) ? " [Read only]" : ""), |
| 2733 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
| 2734 | (file_modified ? " [modified]" : ""), |
| 2735 | cur, tot, percent); |
| 2736 | } |
| 2737 | |
| 2738 | //----- Force refresh of all Lines ----------------------------- |
| 2739 | static void redraw(int full_screen) |
| 2740 | { |
| 2741 | place_cursor(0, 0, FALSE); // put cursor in correct place |
| 2742 | clear_to_eos(); // tel terminal to erase display |
| 2743 | screen_erase(); // erase the internal screen buffer |
| 2744 | refresh(full_screen); // this will redraw the entire display |
| 2745 | } |
| 2746 | |
| 2747 | //----- Format a text[] line into a buffer --------------------- |
| 2748 | static void format_line(Byte *dest, Byte *src, int li) |
| 2749 | { |
| 2750 | int co; |
| 2751 | Byte c; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2752 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2753 | for (co= 0; co < MAX_SCR_COLS; co++) { |
| 2754 | c= ' '; // assume blank |
| 2755 | if (li > 0 && co == 0) { |
| 2756 | c = '~'; // not first line, assume Tilde |
| 2757 | } |
| 2758 | // are there chars in text[] and have we gone past the end |
| 2759 | if (text < end && src < end) { |
| 2760 | c = *src++; |
| 2761 | } |
| 2762 | if (c == '\n') |
| 2763 | break; |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2764 | if (c > 127 && !Isprint(c)) { |
| 2765 | c = '.'; |
| 2766 | } |
| 2767 | if (c < ' ' || c == 127) { |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2768 | if (c == '\t') { |
| 2769 | c = ' '; |
| 2770 | // co % 8 != 7 |
| 2771 | for (; (co % tabstop) != (tabstop - 1); co++) { |
| 2772 | dest[co] = c; |
| 2773 | } |
| 2774 | } else { |
| 2775 | dest[co++] = '^'; |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2776 | if(c == 127) |
| 2777 | c = '?'; |
| 2778 | else |
| 2779 | c += '@'; // make it visible |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2780 | } |
| 2781 | } |
| 2782 | // the co++ is done here so that the column will |
| 2783 | // not be overwritten when we blank-out the rest of line |
| 2784 | dest[co] = c; |
| 2785 | if (src >= end) |
| 2786 | break; |
| 2787 | } |
| 2788 | } |
| 2789 | |
| 2790 | //----- Refresh the changed screen lines ----------------------- |
| 2791 | // Copy the source line from text[] into the buffer and note |
| 2792 | // if the current screenline is different from the new buffer. |
| 2793 | // If they differ then that line needs redrawing on the terminal. |
| 2794 | // |
| 2795 | static void refresh(int full_screen) |
| 2796 | { |
| 2797 | static int old_offset; |
| 2798 | int li, changed; |
| 2799 | Byte buf[MAX_SCR_COLS]; |
| 2800 | Byte *tp, *sp; // pointer into text[] and screen[] |
| 2801 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR |
| 2802 | int last_li= -2; // last line that changed- for optimizing cursor movement |
| 2803 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ |
| 2804 | |
| 2805 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE |
| 2806 | window_size_get(0); |
| 2807 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ |
| 2808 | sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot") |
| 2809 | tp = screenbegin; // index into text[] of top line |
| 2810 | |
| 2811 | // compare text[] to screen[] and mark screen[] lines that need updating |
| 2812 | for (li = 0; li < rows - 1; li++) { |
| 2813 | int cs, ce; // column start & end |
| 2814 | memset(buf, ' ', MAX_SCR_COLS); // blank-out the buffer |
| 2815 | buf[MAX_SCR_COLS-1] = 0; // NULL terminate the buffer |
| 2816 | // format current text line into buf |
| 2817 | format_line(buf, tp, li); |
| 2818 | |
| 2819 | // skip to the end of the current text[] line |
| 2820 | while (tp < end && *tp++ != '\n') /*no-op*/ ; |
| 2821 | |
| 2822 | // see if there are any changes between vitual screen and buf |
| 2823 | changed = FALSE; // assume no change |
| 2824 | cs= 0; |
| 2825 | ce= columns-1; |
| 2826 | sp = &screen[li * columns]; // start of screen line |
| 2827 | if (full_screen) { |
| 2828 | // force re-draw of every single column from 0 - columns-1 |
| 2829 | goto re0; |
| 2830 | } |
| 2831 | // compare newly formatted buffer with virtual screen |
| 2832 | // look forward for first difference between buf and screen |
| 2833 | for ( ; cs <= ce; cs++) { |
| 2834 | if (buf[cs + offset] != sp[cs]) { |
| 2835 | changed = TRUE; // mark for redraw |
| 2836 | break; |
| 2837 | } |
| 2838 | } |
| 2839 | |
| 2840 | // look backward for last difference between buf and screen |
| 2841 | for ( ; ce >= cs; ce--) { |
| 2842 | if (buf[ce + offset] != sp[ce]) { |
| 2843 | changed = TRUE; // mark for redraw |
| 2844 | break; |
| 2845 | } |
| 2846 | } |
| 2847 | // now, cs is index of first diff, and ce is index of last diff |
| 2848 | |
| 2849 | // if horz offset has changed, force a redraw |
| 2850 | if (offset != old_offset) { |
| 2851 | re0: |
| 2852 | changed = TRUE; |
| 2853 | } |
| 2854 | |
| 2855 | // make a sanity check of columns indexes |
| 2856 | if (cs < 0) cs= 0; |
| 2857 | if (ce > columns-1) ce= columns-1; |
| 2858 | if (cs > ce) { cs= 0; ce= columns-1; } |
| 2859 | // is there a change between vitual screen and buf |
| 2860 | if (changed) { |
| 2861 | // copy changed part of buffer to virtual screen |
| 2862 | memmove(sp+cs, buf+(cs+offset), ce-cs+1); |
| 2863 | |
| 2864 | // move cursor to column of first change |
| 2865 | if (offset != old_offset) { |
| 2866 | // opti_cur_move is still too stupid |
| 2867 | // to handle offsets correctly |
| 2868 | place_cursor(li, cs, FALSE); |
| 2869 | } else { |
| 2870 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR |
| 2871 | // if this just the next line |
| 2872 | // try to optimize cursor movement |
| 2873 | // otherwise, use standard ESC sequence |
| 2874 | place_cursor(li, cs, li == (last_li+1) ? TRUE : FALSE); |
| 2875 | last_li= li; |
| 2876 | #else /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ |
| 2877 | place_cursor(li, cs, FALSE); // use standard ESC sequence |
| 2878 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ |
| 2879 | } |
| 2880 | |
| 2881 | // write line out to terminal |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2882 | { |
| 2883 | int nic = ce-cs+1; |
| 2884 | char *out = sp+cs; |
| 2885 | |
| 2886 | while(nic-- > 0) { |
| 2887 | putchar(*out); |
| 2888 | out++; |
| 2889 | } |
| 2890 | } |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2891 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR |
| 2892 | last_row = li; |
| 2893 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ |
| 2894 | } |
| 2895 | } |
| 2896 | |
| 2897 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR |
| 2898 | place_cursor(crow, ccol, (crow == last_row) ? TRUE : FALSE); |
| 2899 | last_row = crow; |
| 2900 | #else |
| 2901 | place_cursor(crow, ccol, FALSE); |
| 2902 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 2903 | |
Aaron Lehmann | 6fdacc7 | 2002-08-21 13:02:24 +0000 | [diff] [blame] | 2904 | if (offset != old_offset) |
| 2905 | old_offset = offset; |
| 2906 | } |
| 2907 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2908 | //--------------------------------------------------------------------- |
| 2909 | //----- the Ascii Chart ----------------------------------------------- |
| 2910 | // |
| 2911 | // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel |
| 2912 | // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si |
| 2913 | // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb |
| 2914 | // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us |
| 2915 | // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 ' |
| 2916 | // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f / |
| 2917 | // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7 |
| 2918 | // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ? |
| 2919 | // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G |
| 2920 | // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O |
| 2921 | // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W |
| 2922 | // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _ |
| 2923 | // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g |
| 2924 | // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o |
| 2925 | // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w |
| 2926 | // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del |
| 2927 | //--------------------------------------------------------------------- |
| 2928 | |
| 2929 | //----- Execute a Vi Command ----------------------------------- |
| 2930 | static void do_cmd(Byte c) |
| 2931 | { |
| 2932 | Byte c1, *p, *q, *msg, buf[9], *save_dot; |
| 2933 | int cnt, i, j, dir, yf; |
| 2934 | |
| 2935 | c1 = c; // quiet the compiler |
| 2936 | cnt = yf = dir = 0; // quiet the compiler |
| 2937 | p = q = save_dot = msg = buf; // quiet the compiler |
| 2938 | memset(buf, '\0', 9); // clear buf |
Eric Andersen | bff7a60 | 2001-11-17 07:15:43 +0000 | [diff] [blame] | 2939 | |
| 2940 | /* if this is a cursor key, skip these checks */ |
| 2941 | switch (c) { |
| 2942 | case VI_K_UP: |
| 2943 | case VI_K_DOWN: |
| 2944 | case VI_K_LEFT: |
| 2945 | case VI_K_RIGHT: |
| 2946 | case VI_K_HOME: |
| 2947 | case VI_K_END: |
| 2948 | case VI_K_PAGEUP: |
| 2949 | case VI_K_PAGEDOWN: |
| 2950 | goto key_cmd_mode; |
| 2951 | } |
| 2952 | |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2953 | if (cmd_mode == 2) { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2954 | // flip-flop Insert/Replace mode |
| 2955 | if (c == VI_K_INSERT) goto dc_i; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2956 | // we are 'R'eplacing the current *dot with new char |
| 2957 | if (*dot == '\n') { |
| 2958 | // don't Replace past E-o-l |
| 2959 | cmd_mode = 1; // convert to insert |
| 2960 | } else { |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2961 | if (1 <= c || Isprint(c)) { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2962 | if (c != 27) |
| 2963 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char |
| 2964 | dot = char_insert(dot, c); // insert new char |
| 2965 | } |
| 2966 | goto dc1; |
| 2967 | } |
| 2968 | } |
| 2969 | if (cmd_mode == 1) { |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 2970 | // hitting "Insert" twice means "R" replace mode |
| 2971 | if (c == VI_K_INSERT) goto dc5; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2972 | // insert the char c at "dot" |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 2973 | if (1 <= c || Isprint(c)) { |
| 2974 | dot = char_insert(dot, c); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2975 | } |
| 2976 | goto dc1; |
| 2977 | } |
| 2978 | |
Eric Andersen | bff7a60 | 2001-11-17 07:15:43 +0000 | [diff] [blame] | 2979 | key_cmd_mode: |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2980 | switch (c) { |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 2981 | //case 0x01: // soh |
| 2982 | //case 0x09: // ht |
| 2983 | //case 0x0b: // vt |
| 2984 | //case 0x0e: // so |
| 2985 | //case 0x0f: // si |
| 2986 | //case 0x10: // dle |
| 2987 | //case 0x11: // dc1 |
| 2988 | //case 0x13: // dc3 |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 2989 | #ifdef CONFIG_FEATURE_VI_CRASHME |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 2990 | case 0x14: // dc4 ctrl-T |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2991 | crashme = (crashme == 0) ? 1 : 0; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 2992 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 2993 | #endif /* CONFIG_FEATURE_VI_CRASHME */ |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 2994 | //case 0x16: // syn |
| 2995 | //case 0x17: // etb |
| 2996 | //case 0x18: // can |
| 2997 | //case 0x1c: // fs |
| 2998 | //case 0x1d: // gs |
| 2999 | //case 0x1e: // rs |
| 3000 | //case 0x1f: // us |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 3001 | //case '!': // !- |
| 3002 | //case '#': // #- |
| 3003 | //case '&': // &- |
| 3004 | //case '(': // (- |
| 3005 | //case ')': // )- |
| 3006 | //case '*': // *- |
| 3007 | //case ',': // ,- |
| 3008 | //case '=': // =- |
| 3009 | //case '@': // @- |
| 3010 | //case 'F': // F- |
| 3011 | //case 'K': // K- |
| 3012 | //case 'Q': // Q- |
| 3013 | //case 'S': // S- |
| 3014 | //case 'T': // T- |
| 3015 | //case 'V': // V- |
| 3016 | //case '[': // [- |
| 3017 | //case '\\': // \- |
| 3018 | //case ']': // ]- |
| 3019 | //case '_': // _- |
| 3020 | //case '`': // `- |
| 3021 | //case 'g': // g- |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3022 | //case 'u': // u- FIXME- there is no undo |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 3023 | //case 'v': // v- |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3024 | default: // unrecognised command |
| 3025 | buf[0] = c; |
| 3026 | buf[1] = '\0'; |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 3027 | if (c < ' ') { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3028 | buf[0] = '^'; |
| 3029 | buf[1] = c + '@'; |
| 3030 | buf[2] = '\0'; |
| 3031 | } |
| 3032 | ni((Byte *) buf); |
| 3033 | end_cmd_q(); // stop adding to q |
| 3034 | case 0x00: // nul- ignore |
| 3035 | break; |
| 3036 | case 2: // ctrl-B scroll up full screen |
| 3037 | case VI_K_PAGEUP: // Cursor Key Page Up |
| 3038 | dot_scroll(rows - 2, -1); |
| 3039 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3040 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3041 | case 0x03: // ctrl-C interrupt |
| 3042 | longjmp(restart, 1); |
| 3043 | break; |
| 3044 | case 26: // ctrl-Z suspend |
| 3045 | suspend_sig(SIGTSTP); |
| 3046 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3047 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3048 | case 4: // ctrl-D scroll down half screen |
| 3049 | dot_scroll((rows - 2) / 2, 1); |
| 3050 | break; |
| 3051 | case 5: // ctrl-E scroll down one line |
| 3052 | dot_scroll(1, 1); |
| 3053 | break; |
| 3054 | case 6: // ctrl-F scroll down full screen |
| 3055 | case VI_K_PAGEDOWN: // Cursor Key Page Down |
| 3056 | dot_scroll(rows - 2, 1); |
| 3057 | break; |
| 3058 | case 7: // ctrl-G show current status |
| 3059 | edit_status(); |
| 3060 | break; |
| 3061 | case 'h': // h- move left |
| 3062 | case VI_K_LEFT: // cursor key Left |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3063 | case 8: // ctrl-H- move left (This may be ERASE char) |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3064 | case 127: // DEL- move left (This may be ERASE char) |
| 3065 | if (cmdcnt-- > 1) { |
| 3066 | do_cmd(c); |
| 3067 | } // repeat cnt |
| 3068 | dot_left(); |
| 3069 | break; |
| 3070 | case 10: // Newline ^J |
| 3071 | case 'j': // j- goto next line, same col |
| 3072 | case VI_K_DOWN: // cursor key Down |
| 3073 | if (cmdcnt-- > 1) { |
| 3074 | do_cmd(c); |
| 3075 | } // repeat cnt |
| 3076 | dot_next(); // go to next B-o-l |
| 3077 | dot = move_to_col(dot, ccol + offset); // try stay in same col |
| 3078 | break; |
| 3079 | case 12: // ctrl-L force redraw whole screen |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3080 | case 18: // ctrl-R force redraw |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3081 | place_cursor(0, 0, FALSE); // put cursor in correct place |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3082 | clear_to_eos(); // tel terminal to erase display |
| 3083 | (void) mysleep(10); |
| 3084 | screen_erase(); // erase the internal screen buffer |
| 3085 | refresh(TRUE); // this will redraw the entire display |
| 3086 | break; |
| 3087 | case 13: // Carriage Return ^M |
| 3088 | case '+': // +- goto next line |
| 3089 | if (cmdcnt-- > 1) { |
| 3090 | do_cmd(c); |
| 3091 | } // repeat cnt |
| 3092 | dot_next(); |
| 3093 | dot_skip_over_ws(); |
| 3094 | break; |
| 3095 | case 21: // ctrl-U scroll up half screen |
| 3096 | dot_scroll((rows - 2) / 2, -1); |
| 3097 | break; |
| 3098 | case 25: // ctrl-Y scroll up one line |
| 3099 | dot_scroll(1, -1); |
| 3100 | break; |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3101 | case 27: // esc |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3102 | if (cmd_mode == 0) |
| 3103 | indicate_error(c); |
| 3104 | cmd_mode = 0; // stop insrting |
| 3105 | end_cmd_q(); |
| 3106 | *status_buffer = '\0'; // clear status buffer |
| 3107 | break; |
| 3108 | case ' ': // move right |
| 3109 | case 'l': // move right |
| 3110 | case VI_K_RIGHT: // Cursor Key Right |
| 3111 | if (cmdcnt-- > 1) { |
| 3112 | do_cmd(c); |
| 3113 | } // repeat cnt |
| 3114 | dot_right(); |
| 3115 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3116 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3117 | case '"': // "- name a register to use for Delete/Yank |
| 3118 | c1 = get_one_char(); |
| 3119 | c1 = tolower(c1); |
| 3120 | if (islower(c1)) { |
| 3121 | YDreg = c1 - 'a'; |
| 3122 | } else { |
| 3123 | indicate_error(c); |
| 3124 | } |
| 3125 | break; |
| 3126 | case '\'': // '- goto a specific mark |
| 3127 | c1 = get_one_char(); |
| 3128 | c1 = tolower(c1); |
| 3129 | if (islower(c1)) { |
| 3130 | c1 = c1 - 'a'; |
| 3131 | // get the b-o-l |
| 3132 | q = mark[(int) c1]; |
| 3133 | if (text <= q && q < end) { |
| 3134 | dot = q; |
| 3135 | dot_begin(); // go to B-o-l |
| 3136 | dot_skip_over_ws(); |
| 3137 | } |
| 3138 | } else if (c1 == '\'') { // goto previous context |
| 3139 | dot = swap_context(dot); // swap current and previous context |
| 3140 | dot_begin(); // go to B-o-l |
| 3141 | dot_skip_over_ws(); |
| 3142 | } else { |
| 3143 | indicate_error(c); |
| 3144 | } |
| 3145 | break; |
| 3146 | case 'm': // m- Mark a line |
| 3147 | // this is really stupid. If there are any inserts or deletes |
| 3148 | // between text[0] and dot then this mark will not point to the |
| 3149 | // correct location! It could be off by many lines! |
| 3150 | // Well..., at least its quick and dirty. |
| 3151 | c1 = get_one_char(); |
| 3152 | c1 = tolower(c1); |
| 3153 | if (islower(c1)) { |
| 3154 | c1 = c1 - 'a'; |
| 3155 | // remember the line |
| 3156 | mark[(int) c1] = dot; |
| 3157 | } else { |
| 3158 | indicate_error(c); |
| 3159 | } |
| 3160 | break; |
| 3161 | case 'P': // P- Put register before |
| 3162 | case 'p': // p- put register after |
| 3163 | p = reg[YDreg]; |
| 3164 | if (p == 0) { |
| 3165 | psbs("Nothing in register %c", what_reg()); |
| 3166 | break; |
| 3167 | } |
| 3168 | // are we putting whole lines or strings |
| 3169 | if (strchr((char *) p, '\n') != NULL) { |
| 3170 | if (c == 'P') { |
| 3171 | dot_begin(); // putting lines- Put above |
| 3172 | } |
| 3173 | if (c == 'p') { |
| 3174 | // are we putting after very last line? |
| 3175 | if (end_line(dot) == (end - 1)) { |
| 3176 | dot = end; // force dot to end of text[] |
| 3177 | } else { |
| 3178 | dot_next(); // next line, then put before |
| 3179 | } |
| 3180 | } |
| 3181 | } else { |
| 3182 | if (c == 'p') |
| 3183 | dot_right(); // move to right, can move to NL |
| 3184 | } |
| 3185 | dot = string_insert(dot, p); // insert the string |
| 3186 | end_cmd_q(); // stop adding to q |
| 3187 | break; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3188 | case 'U': // U- Undo; replace current line with original version |
| 3189 | if (reg[Ureg] != 0) { |
| 3190 | p = begin_line(dot); |
| 3191 | q = end_line(dot); |
| 3192 | p = text_hole_delete(p, q); // delete cur line |
| 3193 | p = string_insert(p, reg[Ureg]); // insert orig line |
| 3194 | dot = p; |
| 3195 | dot_skip_over_ws(); |
| 3196 | } |
| 3197 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3198 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3199 | case '$': // $- goto end of line |
| 3200 | case VI_K_END: // Cursor Key End |
| 3201 | if (cmdcnt-- > 1) { |
| 3202 | do_cmd(c); |
| 3203 | } // repeat cnt |
Glenn L McGrath | ee82906 | 2004-01-21 10:59:45 +0000 | [diff] [blame] | 3204 | dot = end_line(dot); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3205 | break; |
| 3206 | case '%': // %- find matching char of pair () [] {} |
| 3207 | for (q = dot; q < end && *q != '\n'; q++) { |
| 3208 | if (strchr("()[]{}", *q) != NULL) { |
| 3209 | // we found half of a pair |
| 3210 | p = find_pair(q, *q); |
| 3211 | if (p == NULL) { |
| 3212 | indicate_error(c); |
| 3213 | } else { |
| 3214 | dot = p; |
| 3215 | } |
| 3216 | break; |
| 3217 | } |
| 3218 | } |
| 3219 | if (*q == '\n') |
| 3220 | indicate_error(c); |
| 3221 | break; |
| 3222 | case 'f': // f- forward to a user specified char |
| 3223 | last_forward_char = get_one_char(); // get the search char |
| 3224 | // |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame^] | 3225 | // dont separate these two commands. 'f' depends on ';' |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3226 | // |
| 3227 | //**** fall thru to ... 'i' |
| 3228 | case ';': // ;- look at rest of line for last forward char |
| 3229 | if (cmdcnt-- > 1) { |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3230 | do_cmd(';'); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3231 | } // repeat cnt |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3232 | if (last_forward_char == 0) break; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3233 | q = dot + 1; |
| 3234 | while (q < end - 1 && *q != '\n' && *q != last_forward_char) { |
| 3235 | q++; |
| 3236 | } |
| 3237 | if (*q == last_forward_char) |
| 3238 | dot = q; |
| 3239 | break; |
| 3240 | case '-': // -- goto prev line |
| 3241 | if (cmdcnt-- > 1) { |
| 3242 | do_cmd(c); |
| 3243 | } // repeat cnt |
| 3244 | dot_prev(); |
| 3245 | dot_skip_over_ws(); |
| 3246 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3247 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3248 | case '.': // .- repeat the last modifying command |
| 3249 | // Stuff the last_modifying_cmd back into stdin |
| 3250 | // and let it be re-executed. |
| 3251 | if (last_modifying_cmd != 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 3252 | ioq = ioq_start = (Byte *) bb_xstrdup((char *) last_modifying_cmd); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3253 | } |
| 3254 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3255 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
| 3256 | #ifdef CONFIG_FEATURE_VI_SEARCH |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3257 | case '?': // /- search for a pattern |
| 3258 | case '/': // /- search for a pattern |
| 3259 | buf[0] = c; |
| 3260 | buf[1] = '\0'; |
| 3261 | q = get_input_line(buf); // get input line- use "status line" |
| 3262 | if (strlen((char *) q) == 1) |
| 3263 | goto dc3; // if no pat re-use old pat |
| 3264 | if (strlen((char *) q) > 1) { // new pat- save it and find |
| 3265 | // there is a new pat |
Aaron Lehmann | a170e1c | 2002-11-28 11:27:31 +0000 | [diff] [blame] | 3266 | free(last_search_pattern); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 3267 | last_search_pattern = (Byte *) bb_xstrdup((char *) q); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3268 | goto dc3; // now find the pattern |
| 3269 | } |
| 3270 | // user changed mind and erased the "/"- do nothing |
| 3271 | break; |
| 3272 | case 'N': // N- backward search for last pattern |
| 3273 | if (cmdcnt-- > 1) { |
| 3274 | do_cmd(c); |
| 3275 | } // repeat cnt |
| 3276 | dir = BACK; // assume BACKWARD search |
| 3277 | p = dot - 1; |
| 3278 | if (last_search_pattern[0] == '?') { |
| 3279 | dir = FORWARD; |
| 3280 | p = dot + 1; |
| 3281 | } |
| 3282 | goto dc4; // now search for pattern |
| 3283 | break; |
| 3284 | case 'n': // n- repeat search for last pattern |
| 3285 | // search rest of text[] starting at next char |
| 3286 | // if search fails return orignal "p" not the "p+1" address |
| 3287 | if (cmdcnt-- > 1) { |
| 3288 | do_cmd(c); |
| 3289 | } // repeat cnt |
| 3290 | dc3: |
| 3291 | if (last_search_pattern == 0) { |
| 3292 | msg = (Byte *) "No previous regular expression"; |
| 3293 | goto dc2; |
| 3294 | } |
| 3295 | if (last_search_pattern[0] == '/') { |
| 3296 | dir = FORWARD; // assume FORWARD search |
| 3297 | p = dot + 1; |
| 3298 | } |
| 3299 | if (last_search_pattern[0] == '?') { |
| 3300 | dir = BACK; |
| 3301 | p = dot - 1; |
| 3302 | } |
| 3303 | dc4: |
| 3304 | q = char_search(p, last_search_pattern + 1, dir, FULL); |
| 3305 | if (q != NULL) { |
| 3306 | dot = q; // good search, update "dot" |
| 3307 | msg = (Byte *) ""; |
| 3308 | goto dc2; |
| 3309 | } |
| 3310 | // no pattern found between "dot" and "end"- continue at top |
| 3311 | p = text; |
| 3312 | if (dir == BACK) { |
| 3313 | p = end - 1; |
| 3314 | } |
| 3315 | q = char_search(p, last_search_pattern + 1, dir, FULL); |
| 3316 | if (q != NULL) { // found something |
| 3317 | dot = q; // found new pattern- goto it |
| 3318 | msg = (Byte *) "search hit BOTTOM, continuing at TOP"; |
| 3319 | if (dir == BACK) { |
| 3320 | msg = (Byte *) "search hit TOP, continuing at BOTTOM"; |
| 3321 | } |
| 3322 | } else { |
| 3323 | msg = (Byte *) "Pattern not found"; |
| 3324 | } |
| 3325 | dc2: |
| 3326 | psbs("%s", msg); |
| 3327 | break; |
| 3328 | case '{': // {- move backward paragraph |
| 3329 | q = char_search(dot, (Byte *) "\n\n", BACK, FULL); |
| 3330 | if (q != NULL) { // found blank line |
| 3331 | dot = next_line(q); // move to next blank line |
| 3332 | } |
| 3333 | break; |
| 3334 | case '}': // }- move forward paragraph |
| 3335 | q = char_search(dot, (Byte *) "\n\n", FORWARD, FULL); |
| 3336 | if (q != NULL) { // found blank line |
| 3337 | dot = next_line(q); // move to next blank line |
| 3338 | } |
| 3339 | break; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3340 | #endif /* CONFIG_FEATURE_VI_SEARCH */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3341 | case '0': // 0- goto begining of line |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 3342 | case '1': // 1- |
| 3343 | case '2': // 2- |
| 3344 | case '3': // 3- |
| 3345 | case '4': // 4- |
| 3346 | case '5': // 5- |
| 3347 | case '6': // 6- |
| 3348 | case '7': // 7- |
| 3349 | case '8': // 8- |
| 3350 | case '9': // 9- |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3351 | if (c == '0' && cmdcnt < 1) { |
| 3352 | dot_begin(); // this was a standalone zero |
| 3353 | } else { |
| 3354 | cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number |
| 3355 | } |
| 3356 | break; |
| 3357 | case ':': // :- the colon mode commands |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3358 | p = get_input_line((Byte *) ":"); // get input line- use "status line" |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3359 | #ifdef CONFIG_FEATURE_VI_COLON |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3360 | colon(p); // execute the command |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3361 | #else /* CONFIG_FEATURE_VI_COLON */ |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3362 | if (*p == ':') |
| 3363 | p++; // move past the ':' |
| 3364 | cnt = strlen((char *) p); |
| 3365 | if (cnt <= 0) |
| 3366 | break; |
| 3367 | if (strncasecmp((char *) p, "quit", cnt) == 0 || |
| 3368 | strncasecmp((char *) p, "q!", cnt) == 0) { // delete lines |
Matt Kraai | 1f0c436 | 2001-12-20 23:13:26 +0000 | [diff] [blame] | 3369 | if (file_modified && p[1] != '!') { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3370 | psbs("No write since last change (:quit! overrides)"); |
| 3371 | } else { |
| 3372 | editing = 0; |
| 3373 | } |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3374 | } else if (strncasecmp((char *) p, "write", cnt) == 0 || |
Robert Griebl | a71389b | 2002-07-31 21:22:21 +0000 | [diff] [blame] | 3375 | strncasecmp((char *) p, "wq", cnt) == 0 || |
| 3376 | strncasecmp((char *) p, "x", cnt) == 0) { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3377 | cnt = file_write(cfn, text, end - 1); |
| 3378 | file_modified = FALSE; |
| 3379 | psb("\"%s\" %dL, %dC", cfn, count_lines(text, end - 1), cnt); |
Robert Griebl | a71389b | 2002-07-31 21:22:21 +0000 | [diff] [blame] | 3380 | if (p[0] == 'x' || p[1] == 'q') { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3381 | editing = 0; |
| 3382 | } |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3383 | } else if (strncasecmp((char *) p, "file", cnt) == 0 ) { |
| 3384 | edit_status(); // show current file status |
| 3385 | } else if (sscanf((char *) p, "%d", &j) > 0) { |
| 3386 | dot = find_line(j); // go to line # j |
| 3387 | dot_skip_over_ws(); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3388 | } else { // unrecognised cmd |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3389 | ni((Byte *) p); |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3390 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3391 | #endif /* CONFIG_FEATURE_VI_COLON */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3392 | break; |
| 3393 | case '<': // <- Left shift something |
| 3394 | case '>': // >- Right shift something |
| 3395 | cnt = count_lines(text, dot); // remember what line we are on |
| 3396 | c1 = get_one_char(); // get the type of thing to delete |
| 3397 | find_range(&p, &q, c1); |
| 3398 | (void) yank_delete(p, q, 1, YANKONLY); // save copy before change |
| 3399 | p = begin_line(p); |
| 3400 | q = end_line(q); |
| 3401 | i = count_lines(p, q); // # of lines we are shifting |
| 3402 | for ( ; i > 0; i--, p = next_line(p)) { |
| 3403 | if (c == '<') { |
| 3404 | // shift left- remove tab or 8 spaces |
| 3405 | if (*p == '\t') { |
| 3406 | // shrink buffer 1 char |
| 3407 | (void) text_hole_delete(p, p); |
| 3408 | } else if (*p == ' ') { |
| 3409 | // we should be calculating columns, not just SPACE |
| 3410 | for (j = 0; *p == ' ' && j < tabstop; j++) { |
| 3411 | (void) text_hole_delete(p, p); |
| 3412 | } |
| 3413 | } |
| 3414 | } else if (c == '>') { |
| 3415 | // shift right -- add tab or 8 spaces |
| 3416 | (void) char_insert(p, '\t'); |
| 3417 | } |
| 3418 | } |
| 3419 | dot = find_line(cnt); // what line were we on |
| 3420 | dot_skip_over_ws(); |
| 3421 | end_cmd_q(); // stop adding to q |
| 3422 | break; |
| 3423 | case 'A': // A- append at e-o-l |
| 3424 | dot_end(); // go to e-o-l |
| 3425 | //**** fall thru to ... 'a' |
| 3426 | case 'a': // a- append after current char |
| 3427 | if (*dot != '\n') |
| 3428 | dot++; |
| 3429 | goto dc_i; |
| 3430 | break; |
| 3431 | case 'B': // B- back a blank-delimited Word |
| 3432 | case 'E': // E- end of a blank-delimited word |
| 3433 | case 'W': // W- forward a blank-delimited word |
| 3434 | if (cmdcnt-- > 1) { |
| 3435 | do_cmd(c); |
| 3436 | } // repeat cnt |
| 3437 | dir = FORWARD; |
| 3438 | if (c == 'B') |
| 3439 | dir = BACK; |
| 3440 | if (c == 'W' || isspace(dot[dir])) { |
| 3441 | dot = skip_thing(dot, 1, dir, S_TO_WS); |
| 3442 | dot = skip_thing(dot, 2, dir, S_OVER_WS); |
| 3443 | } |
| 3444 | if (c != 'W') |
| 3445 | dot = skip_thing(dot, 1, dir, S_BEFORE_WS); |
| 3446 | break; |
| 3447 | case 'C': // C- Change to e-o-l |
| 3448 | case 'D': // D- delete to e-o-l |
| 3449 | save_dot = dot; |
| 3450 | dot = dollar_line(dot); // move to before NL |
| 3451 | // copy text into a register and delete |
| 3452 | dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l |
| 3453 | if (c == 'C') |
| 3454 | goto dc_i; // start inserting |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3455 | #ifdef CONFIG_FEATURE_VI_DOT_CMD |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3456 | if (c == 'D') |
| 3457 | end_cmd_q(); // stop adding to q |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3458 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3459 | break; |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3460 | case 'G': // G- goto to a line number (default= E-O-F) |
| 3461 | dot = end - 1; // assume E-O-F |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3462 | if (cmdcnt > 0) { |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3463 | dot = find_line(cmdcnt); // what line is #cmdcnt |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3464 | } |
| 3465 | dot_skip_over_ws(); |
| 3466 | break; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3467 | case 'H': // H- goto top line on screen |
| 3468 | dot = screenbegin; |
| 3469 | if (cmdcnt > (rows - 1)) { |
| 3470 | cmdcnt = (rows - 1); |
| 3471 | } |
| 3472 | if (cmdcnt-- > 1) { |
| 3473 | do_cmd('+'); |
| 3474 | } // repeat cnt |
| 3475 | dot_skip_over_ws(); |
| 3476 | break; |
| 3477 | case 'I': // I- insert before first non-blank |
| 3478 | dot_begin(); // 0 |
| 3479 | dot_skip_over_ws(); |
| 3480 | //**** fall thru to ... 'i' |
| 3481 | case 'i': // i- insert before current char |
| 3482 | case VI_K_INSERT: // Cursor Key Insert |
| 3483 | dc_i: |
| 3484 | cmd_mode = 1; // start insrting |
| 3485 | psb("-- Insert --"); |
| 3486 | break; |
| 3487 | case 'J': // J- join current and next lines together |
| 3488 | if (cmdcnt-- > 2) { |
| 3489 | do_cmd(c); |
| 3490 | } // repeat cnt |
| 3491 | dot_end(); // move to NL |
| 3492 | if (dot < end - 1) { // make sure not last char in text[] |
| 3493 | *dot++ = ' '; // replace NL with space |
| 3494 | while (isblnk(*dot)) { // delete leading WS |
| 3495 | dot_delete(); |
| 3496 | } |
| 3497 | } |
| 3498 | end_cmd_q(); // stop adding to q |
| 3499 | break; |
| 3500 | case 'L': // L- goto bottom line on screen |
| 3501 | dot = end_screen(); |
| 3502 | if (cmdcnt > (rows - 1)) { |
| 3503 | cmdcnt = (rows - 1); |
| 3504 | } |
| 3505 | if (cmdcnt-- > 1) { |
| 3506 | do_cmd('-'); |
| 3507 | } // repeat cnt |
| 3508 | dot_begin(); |
| 3509 | dot_skip_over_ws(); |
| 3510 | break; |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3511 | case 'M': // M- goto middle line on screen |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3512 | dot = screenbegin; |
| 3513 | for (cnt = 0; cnt < (rows-1) / 2; cnt++) |
| 3514 | dot = next_line(dot); |
| 3515 | break; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3516 | case 'O': // O- open a empty line above |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3517 | // 0i\n ESC -i |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3518 | p = begin_line(dot); |
| 3519 | if (p[-1] == '\n') { |
| 3520 | dot_prev(); |
| 3521 | case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..." |
| 3522 | dot_end(); |
| 3523 | dot = char_insert(dot, '\n'); |
| 3524 | } else { |
| 3525 | dot_begin(); // 0 |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3526 | dot = char_insert(dot, '\n'); // i\n ESC |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3527 | dot_prev(); // - |
| 3528 | } |
| 3529 | goto dc_i; |
| 3530 | break; |
| 3531 | case 'R': // R- continuous Replace char |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3532 | dc5: |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3533 | cmd_mode = 2; |
| 3534 | psb("-- Replace --"); |
| 3535 | break; |
| 3536 | case 'X': // X- delete char before dot |
| 3537 | case 'x': // x- delete the current char |
| 3538 | case 's': // s- substitute the current char |
| 3539 | if (cmdcnt-- > 1) { |
| 3540 | do_cmd(c); |
| 3541 | } // repeat cnt |
| 3542 | dir = 0; |
| 3543 | if (c == 'X') |
| 3544 | dir = -1; |
| 3545 | if (dot[dir] != '\n') { |
| 3546 | if (c == 'X') |
| 3547 | dot--; // delete prev char |
| 3548 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char |
| 3549 | } |
| 3550 | if (c == 's') |
| 3551 | goto dc_i; // start insrting |
| 3552 | end_cmd_q(); // stop adding to q |
| 3553 | break; |
| 3554 | case 'Z': // Z- if modified, {write}; exit |
| 3555 | // ZZ means to save file (if necessary), then exit |
| 3556 | c1 = get_one_char(); |
| 3557 | if (c1 != 'Z') { |
| 3558 | indicate_error(c); |
| 3559 | break; |
| 3560 | } |
Matt Kraai | 1f0c436 | 2001-12-20 23:13:26 +0000 | [diff] [blame] | 3561 | if (file_modified |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3562 | #ifdef CONFIG_FEATURE_VI_READONLY |
Matt Kraai | 1f0c436 | 2001-12-20 23:13:26 +0000 | [diff] [blame] | 3563 | && ! vi_readonly |
| 3564 | && ! readonly |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3565 | #endif /* CONFIG_FEATURE_VI_READONLY */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3566 | ) { |
| 3567 | cnt = file_write(cfn, text, end - 1); |
| 3568 | if (cnt == (end - 1 - text + 1)) { |
| 3569 | editing = 0; |
| 3570 | } |
| 3571 | } else { |
| 3572 | editing = 0; |
| 3573 | } |
| 3574 | break; |
| 3575 | case '^': // ^- move to first non-blank on line |
| 3576 | dot_begin(); |
| 3577 | dot_skip_over_ws(); |
| 3578 | break; |
| 3579 | case 'b': // b- back a word |
| 3580 | case 'e': // e- end of word |
| 3581 | if (cmdcnt-- > 1) { |
| 3582 | do_cmd(c); |
| 3583 | } // repeat cnt |
| 3584 | dir = FORWARD; |
| 3585 | if (c == 'b') |
| 3586 | dir = BACK; |
| 3587 | if ((dot + dir) < text || (dot + dir) > end - 1) |
| 3588 | break; |
| 3589 | dot += dir; |
| 3590 | if (isspace(*dot)) { |
| 3591 | dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS); |
| 3592 | } |
| 3593 | if (isalnum(*dot) || *dot == '_') { |
| 3594 | dot = skip_thing(dot, 1, dir, S_END_ALNUM); |
| 3595 | } else if (ispunct(*dot)) { |
| 3596 | dot = skip_thing(dot, 1, dir, S_END_PUNCT); |
| 3597 | } |
| 3598 | break; |
| 3599 | case 'c': // c- change something |
| 3600 | case 'd': // d- delete something |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3601 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3602 | case 'y': // y- yank something |
| 3603 | case 'Y': // Y- Yank a line |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3604 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3605 | yf = YANKDEL; // assume either "c" or "d" |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3606 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3607 | if (c == 'y' || c == 'Y') |
| 3608 | yf = YANKONLY; |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3609 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3610 | c1 = 'y'; |
| 3611 | if (c != 'Y') |
| 3612 | c1 = get_one_char(); // get the type of thing to delete |
| 3613 | find_range(&p, &q, c1); |
| 3614 | if (c1 == 27) { // ESC- user changed mind and wants out |
| 3615 | c = c1 = 27; // Escape- do nothing |
| 3616 | } else if (strchr("wW", c1)) { |
| 3617 | if (c == 'c') { |
| 3618 | // don't include trailing WS as part of word |
| 3619 | while (isblnk(*q)) { |
| 3620 | if (q <= text || q[-1] == '\n') |
| 3621 | break; |
| 3622 | q--; |
| 3623 | } |
| 3624 | } |
| 3625 | dot = yank_delete(p, q, 0, yf); // delete word |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3626 | } else if (strchr("^0bBeEft$", c1)) { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3627 | // single line copy text into a register and delete |
| 3628 | dot = yank_delete(p, q, 0, yf); // delete word |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3629 | } else if (strchr("cdykjHL%+-{}\r\n", c1)) { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3630 | // multiple line copy text into a register and delete |
| 3631 | dot = yank_delete(p, q, 1, yf); // delete lines |
Eric Andersen | 1c0d311 | 2001-04-16 15:46:44 +0000 | [diff] [blame] | 3632 | if (c == 'c') { |
| 3633 | dot = char_insert(dot, '\n'); |
| 3634 | // on the last line of file don't move to prev line |
| 3635 | if (dot != (end-1)) { |
| 3636 | dot_prev(); |
| 3637 | } |
| 3638 | } else if (c == 'd') { |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3639 | dot_begin(); |
| 3640 | dot_skip_over_ws(); |
| 3641 | } |
| 3642 | } else { |
| 3643 | // could not recognize object |
| 3644 | c = c1 = 27; // error- |
| 3645 | indicate_error(c); |
| 3646 | } |
| 3647 | if (c1 != 27) { |
| 3648 | // if CHANGING, not deleting, start inserting after the delete |
| 3649 | if (c == 'c') { |
| 3650 | strcpy((char *) buf, "Change"); |
| 3651 | goto dc_i; // start inserting |
| 3652 | } |
| 3653 | if (c == 'd') { |
| 3654 | strcpy((char *) buf, "Delete"); |
| 3655 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3656 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3657 | if (c == 'y' || c == 'Y') { |
| 3658 | strcpy((char *) buf, "Yank"); |
| 3659 | } |
| 3660 | p = reg[YDreg]; |
| 3661 | q = p + strlen((char *) p); |
| 3662 | for (cnt = 0; p <= q; p++) { |
| 3663 | if (*p == '\n') |
| 3664 | cnt++; |
| 3665 | } |
| 3666 | psb("%s %d lines (%d chars) using [%c]", |
| 3667 | buf, cnt, strlen((char *) reg[YDreg]), what_reg()); |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3668 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3669 | end_cmd_q(); // stop adding to q |
| 3670 | } |
| 3671 | break; |
| 3672 | case 'k': // k- goto prev line, same col |
| 3673 | case VI_K_UP: // cursor key Up |
| 3674 | if (cmdcnt-- > 1) { |
| 3675 | do_cmd(c); |
| 3676 | } // repeat cnt |
| 3677 | dot_prev(); |
| 3678 | dot = move_to_col(dot, ccol + offset); // try stay in same col |
| 3679 | break; |
| 3680 | case 'r': // r- replace the current char with user input |
| 3681 | c1 = get_one_char(); // get the replacement char |
| 3682 | if (*dot != '\n') { |
| 3683 | *dot = c1; |
| 3684 | file_modified = TRUE; // has the file been modified |
| 3685 | } |
| 3686 | end_cmd_q(); // stop adding to q |
| 3687 | break; |
Eric Andersen | 822c383 | 2001-05-07 17:37:43 +0000 | [diff] [blame] | 3688 | case 't': // t- move to char prior to next x |
| 3689 | last_forward_char = get_one_char(); |
| 3690 | do_cmd(';'); |
| 3691 | if (*dot == last_forward_char) |
| 3692 | dot_left(); |
| 3693 | last_forward_char= 0; |
| 3694 | break; |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3695 | case 'w': // w- forward a word |
| 3696 | if (cmdcnt-- > 1) { |
| 3697 | do_cmd(c); |
| 3698 | } // repeat cnt |
| 3699 | if (isalnum(*dot) || *dot == '_') { // we are on ALNUM |
| 3700 | dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM); |
| 3701 | } else if (ispunct(*dot)) { // we are on PUNCT |
| 3702 | dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT); |
| 3703 | } |
| 3704 | if (dot < end - 1) |
| 3705 | dot++; // move over word |
| 3706 | if (isspace(*dot)) { |
| 3707 | dot = skip_thing(dot, 2, FORWARD, S_OVER_WS); |
| 3708 | } |
| 3709 | break; |
| 3710 | case 'z': // z- |
| 3711 | c1 = get_one_char(); // get the replacement char |
| 3712 | cnt = 0; |
| 3713 | if (c1 == '.') |
| 3714 | cnt = (rows - 2) / 2; // put dot at center |
| 3715 | if (c1 == '-') |
| 3716 | cnt = rows - 2; // put dot at bottom |
| 3717 | screenbegin = begin_line(dot); // start dot at top |
| 3718 | dot_scroll(cnt, -1); |
| 3719 | break; |
| 3720 | case '|': // |- move to column "cmdcnt" |
| 3721 | dot = move_to_col(dot, cmdcnt - 1); // try to move to column |
| 3722 | break; |
| 3723 | case '~': // ~- flip the case of letters a-z -> A-Z |
| 3724 | if (cmdcnt-- > 1) { |
| 3725 | do_cmd(c); |
| 3726 | } // repeat cnt |
| 3727 | if (islower(*dot)) { |
| 3728 | *dot = toupper(*dot); |
| 3729 | file_modified = TRUE; // has the file been modified |
| 3730 | } else if (isupper(*dot)) { |
| 3731 | *dot = tolower(*dot); |
| 3732 | file_modified = TRUE; // has the file been modified |
| 3733 | } |
| 3734 | dot_right(); |
| 3735 | end_cmd_q(); // stop adding to q |
| 3736 | break; |
| 3737 | //----- The Cursor and Function Keys ----------------------------- |
| 3738 | case VI_K_HOME: // Cursor Key Home |
| 3739 | dot_begin(); |
| 3740 | break; |
| 3741 | // The Fn keys could point to do_macro which could translate them |
| 3742 | case VI_K_FUN1: // Function Key F1 |
| 3743 | case VI_K_FUN2: // Function Key F2 |
| 3744 | case VI_K_FUN3: // Function Key F3 |
| 3745 | case VI_K_FUN4: // Function Key F4 |
| 3746 | case VI_K_FUN5: // Function Key F5 |
| 3747 | case VI_K_FUN6: // Function Key F6 |
| 3748 | case VI_K_FUN7: // Function Key F7 |
| 3749 | case VI_K_FUN8: // Function Key F8 |
| 3750 | case VI_K_FUN9: // Function Key F9 |
| 3751 | case VI_K_FUN10: // Function Key F10 |
| 3752 | case VI_K_FUN11: // Function Key F11 |
| 3753 | case VI_K_FUN12: // Function Key F12 |
| 3754 | break; |
| 3755 | } |
| 3756 | |
| 3757 | dc1: |
| 3758 | // if text[] just became empty, add back an empty line |
| 3759 | if (end == text) { |
| 3760 | (void) char_insert(text, '\n'); // start empty buf with dummy line |
| 3761 | dot = text; |
| 3762 | } |
| 3763 | // it is OK for dot to exactly equal to end, otherwise check dot validity |
| 3764 | if (dot != end) { |
| 3765 | dot = bound_dot(dot); // make sure "dot" is valid |
| 3766 | } |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3767 | #ifdef CONFIG_FEATURE_VI_YANKMARK |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3768 | check_context(c); // update the current context |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3769 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ |
Eric Andersen | 3f98040 | 2001-04-04 17:31:15 +0000 | [diff] [blame] | 3770 | |
| 3771 | if (!isdigit(c)) |
| 3772 | cmdcnt = 0; // cmd was not a number, reset cmdcnt |
| 3773 | cnt = dot - begin_line(dot); |
| 3774 | // Try to stay off of the Newline |
| 3775 | if (*dot == '\n' && cnt > 0 && cmd_mode == 0) |
| 3776 | dot--; |
| 3777 | } |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 3778 | |
| 3779 | #ifdef CONFIG_FEATURE_VI_CRASHME |
| 3780 | static int totalcmds = 0; |
| 3781 | static int Mp = 85; // Movement command Probability |
| 3782 | static int Np = 90; // Non-movement command Probability |
| 3783 | static int Dp = 96; // Delete command Probability |
| 3784 | static int Ip = 97; // Insert command Probability |
| 3785 | static int Yp = 98; // Yank command Probability |
| 3786 | static int Pp = 99; // Put command Probability |
| 3787 | static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0; |
| 3788 | char chars[20] = "\t012345 abcdABCD-=.$"; |
| 3789 | char *words[20] = { "this", "is", "a", "test", |
| 3790 | "broadcast", "the", "emergency", "of", |
| 3791 | "system", "quick", "brown", "fox", |
| 3792 | "jumped", "over", "lazy", "dogs", |
| 3793 | "back", "January", "Febuary", "March" |
| 3794 | }; |
| 3795 | char *lines[20] = { |
| 3796 | "You should have received a copy of the GNU General Public License\n", |
| 3797 | "char c, cm, *cmd, *cmd1;\n", |
| 3798 | "generate a command by percentages\n", |
| 3799 | "Numbers may be typed as a prefix to some commands.\n", |
| 3800 | "Quit, discarding changes!\n", |
| 3801 | "Forced write, if permission originally not valid.\n", |
| 3802 | "In general, any ex or ed command (such as substitute or delete).\n", |
| 3803 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", |
| 3804 | "Please get w/ me and I will go over it with you.\n", |
| 3805 | "The following is a list of scheduled, committed changes.\n", |
| 3806 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", |
| 3807 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", |
| 3808 | "Any question about transactions please contact Sterling Huxley.\n", |
| 3809 | "I will try to get back to you by Friday, December 31.\n", |
| 3810 | "This Change will be implemented on Friday.\n", |
| 3811 | "Let me know if you have problems accessing this;\n", |
| 3812 | "Sterling Huxley recently added you to the access list.\n", |
| 3813 | "Would you like to go to lunch?\n", |
| 3814 | "The last command will be automatically run.\n", |
| 3815 | "This is too much english for a computer geek.\n", |
| 3816 | }; |
| 3817 | char *multilines[20] = { |
| 3818 | "You should have received a copy of the GNU General Public License\n", |
| 3819 | "char c, cm, *cmd, *cmd1;\n", |
| 3820 | "generate a command by percentages\n", |
| 3821 | "Numbers may be typed as a prefix to some commands.\n", |
| 3822 | "Quit, discarding changes!\n", |
| 3823 | "Forced write, if permission originally not valid.\n", |
| 3824 | "In general, any ex or ed command (such as substitute or delete).\n", |
| 3825 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", |
| 3826 | "Please get w/ me and I will go over it with you.\n", |
| 3827 | "The following is a list of scheduled, committed changes.\n", |
| 3828 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", |
| 3829 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", |
| 3830 | "Any question about transactions please contact Sterling Huxley.\n", |
| 3831 | "I will try to get back to you by Friday, December 31.\n", |
| 3832 | "This Change will be implemented on Friday.\n", |
| 3833 | "Let me know if you have problems accessing this;\n", |
| 3834 | "Sterling Huxley recently added you to the access list.\n", |
| 3835 | "Would you like to go to lunch?\n", |
| 3836 | "The last command will be automatically run.\n", |
| 3837 | "This is too much english for a computer geek.\n", |
| 3838 | }; |
| 3839 | |
| 3840 | // create a random command to execute |
| 3841 | static void crash_dummy() |
| 3842 | { |
| 3843 | static int sleeptime; // how long to pause between commands |
| 3844 | char c, cm, *cmd, *cmd1; |
| 3845 | int i, cnt, thing, rbi, startrbi, percent; |
| 3846 | |
| 3847 | // "dot" movement commands |
| 3848 | cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL"; |
| 3849 | |
| 3850 | // is there already a command running? |
| 3851 | if (readed_for_parse > 0) |
| 3852 | goto cd1; |
| 3853 | cd0: |
| 3854 | startrbi = rbi = 0; |
| 3855 | sleeptime = 0; // how long to pause between commands |
| 3856 | memset(readbuffer, '\0', BUFSIZ); // clear the read buffer |
| 3857 | // generate a command by percentages |
| 3858 | percent = (int) lrand48() % 100; // get a number from 0-99 |
| 3859 | if (percent < Mp) { // Movement commands |
| 3860 | // available commands |
| 3861 | cmd = cmd1; |
| 3862 | M++; |
| 3863 | } else if (percent < Np) { // non-movement commands |
| 3864 | cmd = "mz<>\'\""; // available commands |
| 3865 | N++; |
| 3866 | } else if (percent < Dp) { // Delete commands |
| 3867 | cmd = "dx"; // available commands |
| 3868 | D++; |
| 3869 | } else if (percent < Ip) { // Inset commands |
| 3870 | cmd = "iIaAsrJ"; // available commands |
| 3871 | I++; |
| 3872 | } else if (percent < Yp) { // Yank commands |
| 3873 | cmd = "yY"; // available commands |
| 3874 | Y++; |
| 3875 | } else if (percent < Pp) { // Put commands |
| 3876 | cmd = "pP"; // available commands |
| 3877 | P++; |
| 3878 | } else { |
| 3879 | // We do not know how to handle this command, try again |
| 3880 | U++; |
| 3881 | goto cd0; |
| 3882 | } |
| 3883 | // randomly pick one of the available cmds from "cmd[]" |
| 3884 | i = (int) lrand48() % strlen(cmd); |
| 3885 | cm = cmd[i]; |
| 3886 | if (strchr(":\024", cm)) |
| 3887 | goto cd0; // dont allow colon or ctrl-T commands |
| 3888 | readbuffer[rbi++] = cm; // put cmd into input buffer |
| 3889 | |
| 3890 | // now we have the command- |
| 3891 | // there are 1, 2, and multi char commands |
| 3892 | // find out which and generate the rest of command as necessary |
| 3893 | if (strchr("dmryz<>\'\"", cm)) { // 2-char commands |
| 3894 | cmd1 = " \n\r0$^-+wWeEbBhjklHL"; |
| 3895 | if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[] |
| 3896 | cmd1 = "abcdefghijklmnopqrstuvwxyz"; |
| 3897 | } |
| 3898 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command |
| 3899 | c = cmd1[thing]; |
| 3900 | readbuffer[rbi++] = c; // add movement to input buffer |
| 3901 | } |
| 3902 | if (strchr("iIaAsc", cm)) { // multi-char commands |
| 3903 | if (cm == 'c') { |
| 3904 | // change some thing |
| 3905 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command |
| 3906 | c = cmd1[thing]; |
| 3907 | readbuffer[rbi++] = c; // add movement to input buffer |
| 3908 | } |
| 3909 | thing = (int) lrand48() % 4; // what thing to insert |
| 3910 | cnt = (int) lrand48() % 10; // how many to insert |
| 3911 | for (i = 0; i < cnt; i++) { |
| 3912 | if (thing == 0) { // insert chars |
| 3913 | readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))]; |
| 3914 | } else if (thing == 1) { // insert words |
| 3915 | strcat((char *) readbuffer, words[(int) lrand48() % 20]); |
| 3916 | strcat((char *) readbuffer, " "); |
| 3917 | sleeptime = 0; // how fast to type |
| 3918 | } else if (thing == 2) { // insert lines |
| 3919 | strcat((char *) readbuffer, lines[(int) lrand48() % 20]); |
| 3920 | sleeptime = 0; // how fast to type |
| 3921 | } else { // insert multi-lines |
| 3922 | strcat((char *) readbuffer, multilines[(int) lrand48() % 20]); |
| 3923 | sleeptime = 0; // how fast to type |
| 3924 | } |
| 3925 | } |
| 3926 | strcat((char *) readbuffer, "\033"); |
| 3927 | } |
| 3928 | readed_for_parse = strlen(readbuffer); |
| 3929 | cd1: |
| 3930 | totalcmds++; |
| 3931 | if (sleeptime > 0) |
| 3932 | (void) mysleep(sleeptime); // sleep 1/100 sec |
| 3933 | } |
| 3934 | |
| 3935 | // test to see if there are any errors |
| 3936 | static void crash_test() |
| 3937 | { |
| 3938 | static time_t oldtim; |
| 3939 | time_t tim; |
Glenn L McGrath | 7127b58 | 2002-12-03 21:48:15 +0000 | [diff] [blame] | 3940 | char d[2], msg[BUFSIZ]; |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 3941 | |
| 3942 | msg[0] = '\0'; |
| 3943 | if (end < text) { |
| 3944 | strcat((char *) msg, "end<text "); |
| 3945 | } |
| 3946 | if (end > textend) { |
| 3947 | strcat((char *) msg, "end>textend "); |
| 3948 | } |
| 3949 | if (dot < text) { |
| 3950 | strcat((char *) msg, "dot<text "); |
| 3951 | } |
| 3952 | if (dot > end) { |
| 3953 | strcat((char *) msg, "dot>end "); |
| 3954 | } |
| 3955 | if (screenbegin < text) { |
| 3956 | strcat((char *) msg, "screenbegin<text "); |
| 3957 | } |
| 3958 | if (screenbegin > end - 1) { |
| 3959 | strcat((char *) msg, "screenbegin>end-1 "); |
| 3960 | } |
| 3961 | |
| 3962 | if (strlen(msg) > 0) { |
| 3963 | alarm(0); |
Glenn L McGrath | 7127b58 | 2002-12-03 21:48:15 +0000 | [diff] [blame] | 3964 | printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s", |
Glenn L McGrath | 09adaca | 2002-12-02 21:18:10 +0000 | [diff] [blame] | 3965 | totalcmds, last_input_char, msg, SOs, SOn); |
| 3966 | fflush(stdout); |
| 3967 | while (read(0, d, 1) > 0) { |
| 3968 | if (d[0] == '\n' || d[0] == '\r') |
| 3969 | break; |
| 3970 | } |
| 3971 | alarm(3); |
| 3972 | } |
| 3973 | tim = (time_t) time((time_t *) 0); |
| 3974 | if (tim >= (oldtim + 3)) { |
| 3975 | sprintf((char *) status_buffer, |
| 3976 | "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d", |
| 3977 | totalcmds, M, N, I, D, Y, P, U, end - text + 1); |
| 3978 | oldtim = tim; |
| 3979 | } |
| 3980 | return; |
| 3981 | } |
| 3982 | #endif /* CONFIG_FEATURE_VI_CRASHME */ |