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Diffstat (limited to 'busybox/editors/vi.c')
-rw-r--r-- | busybox/editors/vi.c | 3983 |
1 files changed, 3983 insertions, 0 deletions
diff --git a/busybox/editors/vi.c b/busybox/editors/vi.c new file mode 100644 index 000000000..cd6cf0ea1 --- /dev/null +++ b/busybox/editors/vi.c | |||
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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 | |||
21 | static const char vi_Version[] = | ||
22 | "$Id: vi.c,v 1.38 2004/08/19 19:15:06 andersen Exp $"; | ||
23 | |||
24 | /* | ||
25 | * To compile for standalone use: | ||
26 | * gcc -Wall -Os -s -DSTANDALONE -o vi vi.c | ||
27 | * or | ||
28 | * gcc -Wall -Os -s -DSTANDALONE -DCONFIG_FEATURE_VI_CRASHME -o vi vi.c # include testing features | ||
29 | * strip vi | ||
30 | */ | ||
31 | |||
32 | /* | ||
33 | * Things To Do: | ||
34 | * EXINIT | ||
35 | * $HOME/.exrc and ./.exrc | ||
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 | ||
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" | ||
46 | */ | ||
47 | |||
48 | //---- Feature -------------- Bytes to implement | ||
49 | #ifdef STANDALONE | ||
50 | #define vi_main main | ||
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 | ||
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. | ||
65 | //#define CONFIG_FEATURE_VI_CRASHME // randomly pick commands to execute | ||
66 | #endif /* STANDALONE */ | ||
67 | |||
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> | ||
86 | #ifndef STANDALONE | ||
87 | #include "busybox.h" | ||
88 | #endif /* STANDALONE */ | ||
89 | |||
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 | |||
96 | #ifndef TRUE | ||
97 | #define TRUE ((int)1) | ||
98 | #define FALSE ((int)0) | ||
99 | #endif /* TRUE */ | ||
100 | #define MAX_SCR_COLS BUFSIZ | ||
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 | |||
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 | |||
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 | |||
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 | |||
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 | ||
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 | ||
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 | ||
178 | static Byte *status_buffer; // mesages to the user | ||
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 | ||
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' | ||
190 | |||
191 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR | ||
192 | static int last_row; // where the cursor was last moved to | ||
193 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ | ||
194 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS | ||
195 | static jmp_buf restart; // catch_sig() | ||
196 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ | ||
197 | #if defined(CONFIG_FEATURE_VI_USE_SIGNALS) || defined(CONFIG_FEATURE_VI_CRASHME) | ||
198 | static int my_pid; | ||
199 | #endif | ||
200 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
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" | ||
204 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
205 | #if defined(CONFIG_FEATURE_VI_DOT_CMD) || defined(CONFIG_FEATURE_VI_YANKMARK) | ||
206 | static Byte *modifying_cmds; // cmds that modify text[] | ||
207 | #endif /* CONFIG_FEATURE_VI_DOT_CMD || CONFIG_FEATURE_VI_YANKMARK */ | ||
208 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
209 | static int vi_readonly, readonly; | ||
210 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
211 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
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; | ||
216 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
217 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
218 | static Byte *last_search_pattern; // last pattern from a '/' or '?' search | ||
219 | #endif /* CONFIG_FEATURE_VI_SEARCH */ | ||
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 | ||
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 | ||
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 | ||
261 | static int file_size(const Byte *); // what is the byte size of "fn" | ||
262 | static int file_insert(Byte *, Byte *, int); | ||
263 | static int file_write(Byte *, Byte *, Byte *); | ||
264 | static void place_cursor(int, int, int); | ||
265 | static void screen_erase(void); | ||
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 | ||
271 | static void show_status_line(void); // put a message on the bottom line | ||
272 | static void psb(const char *, ...); // Print Status Buf | ||
273 | static void psbs(const char *, ...); // Print Status Buf in standout mode | ||
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 | ||
277 | static void format_line(Byte*, Byte*, int); | ||
278 | static void refresh(int); // update the terminal from screen[] | ||
279 | |||
280 | static void Indicate_Error(void); // use flash or beep to indicate error | ||
281 | #define indicate_error(c) Indicate_Error() | ||
282 | |||
283 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
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" | ||
286 | #endif /* CONFIG_FEATURE_VI_SEARCH */ | ||
287 | #ifdef CONFIG_FEATURE_VI_COLON | ||
288 | static void Hit_Return(void); | ||
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 | ||
291 | static void colon(Byte *); // execute the "colon" mode cmds | ||
292 | #endif /* CONFIG_FEATURE_VI_COLON */ | ||
293 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS | ||
294 | static void winch_sig(int); // catch window size changes | ||
295 | static void suspend_sig(int); // catch ctrl-Z | ||
296 | static void catch_sig(int); // catch ctrl-C and alarm time-outs | ||
297 | static void core_sig(int); // catch a core dump signal | ||
298 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ | ||
299 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
300 | static void start_new_cmd_q(Byte); // new queue for command | ||
301 | static void end_cmd_q(void); // stop saving input chars | ||
302 | #else /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
303 | #define end_cmd_q() | ||
304 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
305 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE | ||
306 | static void window_size_get(int); // find out what size the window is | ||
307 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ | ||
308 | #ifdef CONFIG_FEATURE_VI_SETOPTS | ||
309 | static void showmatching(Byte *); // show the matching pair () [] {} | ||
310 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ | ||
311 | #if defined(CONFIG_FEATURE_VI_YANKMARK) || defined(CONFIG_FEATURE_VI_COLON) || defined(CONFIG_FEATURE_VI_CRASHME) | ||
312 | static Byte *string_insert(Byte *, Byte *); // insert the string at 'p' | ||
313 | #endif /* CONFIG_FEATURE_VI_YANKMARK || CONFIG_FEATURE_VI_COLON || CONFIG_FEATURE_VI_CRASHME */ | ||
314 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
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 | ||
318 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
319 | #ifdef CONFIG_FEATURE_VI_CRASHME | ||
320 | static void crash_dummy(); | ||
321 | static void crash_test(); | ||
322 | static int crashme = 0; | ||
323 | #endif /* CONFIG_FEATURE_VI_CRASHME */ | ||
324 | |||
325 | |||
326 | static void write1(const char *out) | ||
327 | { | ||
328 | fputs(out, stdout); | ||
329 | } | ||
330 | |||
331 | extern int vi_main(int argc, char **argv) | ||
332 | { | ||
333 | int c; | ||
334 | RESERVE_CONFIG_BUFFER(STATUS_BUFFER, 200); | ||
335 | |||
336 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
337 | int i; | ||
338 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
339 | #if defined(CONFIG_FEATURE_VI_USE_SIGNALS) || defined(CONFIG_FEATURE_VI_CRASHME) | ||
340 | my_pid = getpid(); | ||
341 | #endif | ||
342 | #ifdef CONFIG_FEATURE_VI_CRASHME | ||
343 | (void) srand((long) my_pid); | ||
344 | #endif /* CONFIG_FEATURE_VI_CRASHME */ | ||
345 | |||
346 | status_buffer = STATUS_BUFFER; | ||
347 | |||
348 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
349 | vi_readonly = readonly = FALSE; | ||
350 | if (strncmp(argv[0], "view", 4) == 0) { | ||
351 | readonly = TRUE; | ||
352 | vi_readonly = TRUE; | ||
353 | } | ||
354 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
355 | vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE | VI_ERR_METHOD; | ||
356 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
357 | for (i = 0; i < 28; i++) { | ||
358 | reg[i] = 0; | ||
359 | } // init the yank regs | ||
360 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
361 | #if defined(CONFIG_FEATURE_VI_DOT_CMD) || defined(CONFIG_FEATURE_VI_YANKMARK) | ||
362 | modifying_cmds = (Byte *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[] | ||
363 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
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) { | ||
370 | #ifdef CONFIG_FEATURE_VI_CRASHME | ||
371 | case 'C': | ||
372 | crashme = 1; | ||
373 | break; | ||
374 | #endif /* CONFIG_FEATURE_VI_CRASHME */ | ||
375 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
376 | case 'R': // Read-only flag | ||
377 | readonly = TRUE; | ||
378 | vi_readonly = TRUE; | ||
379 | break; | ||
380 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
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 | ||
385 | default: | ||
386 | show_help(); | ||
387 | return 1; | ||
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 | ||
403 | free(cfn); | ||
404 | cfn = (Byte *) bb_xstrdup(argv[optind]); | ||
405 | edit_file(cfn); | ||
406 | } | ||
407 | } | ||
408 | //----------------------------------------------------------- | ||
409 | |||
410 | return (0); | ||
411 | } | ||
412 | |||
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 | |||
421 | static void edit_file(Byte * fn) | ||
422 | { | ||
423 | Byte c; | ||
424 | int cnt, size, ch; | ||
425 | |||
426 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS | ||
427 | int sig; | ||
428 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ | ||
429 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
430 | static Byte *cur_line; | ||
431 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
432 | |||
433 | rawmode(); | ||
434 | rows = 24; | ||
435 | columns = 80; | ||
436 | ch= -1; | ||
437 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE | ||
438 | window_size_get(0); | ||
439 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ | ||
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) { | ||
447 | ch= file_insert(fn, text, cnt); | ||
448 | } | ||
449 | if (ch < 1) { | ||
450 | (void) char_insert(text, '\n'); // start empty buf with dummy line | ||
451 | } | ||
452 | file_modified = FALSE; | ||
453 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
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" | ||
460 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
461 | |||
462 | last_forward_char = last_input_char = '\0'; | ||
463 | crow = 0; | ||
464 | ccol = 0; | ||
465 | edit_status(); | ||
466 | |||
467 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS | ||
468 | catch_sig(0); | ||
469 | core_sig(0); | ||
470 | signal(SIGWINCH, winch_sig); | ||
471 | signal(SIGTSTP, suspend_sig); | ||
472 | sig = setjmp(restart); | ||
473 | if (sig != 0) { | ||
474 | const char *msg = ""; | ||
475 | |||
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); | ||
492 | screenbegin = dot = text; | ||
493 | } | ||
494 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ | ||
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'; | ||
502 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
503 | free(last_modifying_cmd); | ||
504 | free(ioq_start); | ||
505 | ioq = ioq_start = last_modifying_cmd = 0; | ||
506 | adding2q = 0; | ||
507 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
508 | redraw(FALSE); // dont force every col re-draw | ||
509 | show_status_line(); | ||
510 | |||
511 | //------This is the main Vi cmd handling loop ----------------------- | ||
512 | while (editing > 0) { | ||
513 | #ifdef CONFIG_FEATURE_VI_CRASHME | ||
514 | if (crashme > 0) { | ||
515 | if ((end - text) > 1) { | ||
516 | crash_dummy(); // generate a random command | ||
517 | } else { | ||
518 | crashme = 0; | ||
519 | dot = | ||
520 | string_insert(text, (Byte *) "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string | ||
521 | refresh(FALSE); | ||
522 | } | ||
523 | } | ||
524 | #endif /* CONFIG_FEATURE_VI_CRASHME */ | ||
525 | last_input_char = c = get_one_char(); // get a cmd from user | ||
526 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
527 | // save a copy of the current line- for the 'U" command | ||
528 | if (begin_line(dot) != cur_line) { | ||
529 | cur_line = begin_line(dot); | ||
530 | text_yank(begin_line(dot), end_line(dot), Ureg); | ||
531 | } | ||
532 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
533 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
534 | // These are commands that change text[]. | ||
535 | // Remember the input for the "." command | ||
536 | if (!adding2q && ioq_start == 0 | ||
537 | && strchr((char *) modifying_cmds, c) != NULL) { | ||
538 | start_new_cmd_q(c); | ||
539 | } | ||
540 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
541 | do_cmd(c); // execute the user command | ||
542 | // | ||
543 | // poll to see if there is input already waiting. if we are | ||
544 | // not able to display output fast enough to keep up, skip | ||
545 | // the display update until we catch up with input. | ||
546 | if (mysleep(0) == 0) { | ||
547 | // no input pending- so update output | ||
548 | refresh(FALSE); | ||
549 | show_status_line(); | ||
550 | } | ||
551 | #ifdef CONFIG_FEATURE_VI_CRASHME | ||
552 | if (crashme > 0) | ||
553 | crash_test(); // test editor variables | ||
554 | #endif /* CONFIG_FEATURE_VI_CRASHME */ | ||
555 | } | ||
556 | //------------------------------------------------------------------- | ||
557 | |||
558 | place_cursor(rows, 0, FALSE); // go to bottom of screen | ||
559 | clear_to_eol(); // Erase to end of line | ||
560 | cookmode(); | ||
561 | } | ||
562 | |||
563 | //----- The Colon commands ------------------------------------- | ||
564 | #ifdef CONFIG_FEATURE_VI_COLON | ||
565 | static Byte *get_one_address(Byte * p, int *addr) // get colon addr, if present | ||
566 | { | ||
567 | int st; | ||
568 | Byte *q; | ||
569 | |||
570 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
571 | Byte c; | ||
572 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
573 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
574 | Byte *pat, buf[BUFSIZ]; | ||
575 | #endif /* CONFIG_FEATURE_VI_SEARCH */ | ||
576 | |||
577 | *addr = -1; // assume no addr | ||
578 | if (*p == '.') { // the current line | ||
579 | p++; | ||
580 | q = begin_line(dot); | ||
581 | *addr = count_lines(text, q); | ||
582 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
583 | } else if (*p == '\'') { // is this a mark addr | ||
584 | p++; | ||
585 | c = tolower(*p); | ||
586 | p++; | ||
587 | if (c >= 'a' && c <= 'z') { | ||
588 | // we have a mark | ||
589 | c = c - 'a'; | ||
590 | q = mark[(int) c]; | ||
591 | if (q != NULL) { // is mark valid | ||
592 | *addr = count_lines(text, q); // count lines | ||
593 | } | ||
594 | } | ||
595 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
596 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
597 | } else if (*p == '/') { // a search pattern | ||
598 | q = buf; | ||
599 | for (p++; *p; p++) { | ||
600 | if (*p == '/') | ||
601 | break; | ||
602 | *q++ = *p; | ||
603 | *q = '\0'; | ||
604 | } | ||
605 | pat = (Byte *) bb_xstrdup((char *) buf); // save copy of pattern | ||
606 | if (*p == '/') | ||
607 | p++; | ||
608 | q = char_search(dot, pat, FORWARD, FULL); | ||
609 | if (q != NULL) { | ||
610 | *addr = count_lines(text, q); | ||
611 | } | ||
612 | free(pat); | ||
613 | #endif /* CONFIG_FEATURE_VI_SEARCH */ | ||
614 | } else if (*p == '$') { // the last line in file | ||
615 | p++; | ||
616 | q = begin_line(end - 1); | ||
617 | *addr = count_lines(text, q); | ||
618 | } else if (isdigit(*p)) { // specific line number | ||
619 | sscanf((char *) p, "%d%n", addr, &st); | ||
620 | p += st; | ||
621 | } else { // I don't reconise this | ||
622 | // unrecognised address- assume -1 | ||
623 | *addr = -1; | ||
624 | } | ||
625 | return (p); | ||
626 | } | ||
627 | |||
628 | static Byte *get_address(Byte *p, int *b, int *e) // get two colon addrs, if present | ||
629 | { | ||
630 | //----- get the address' i.e., 1,3 'a,'b ----- | ||
631 | // get FIRST addr, if present | ||
632 | while (isblnk(*p)) | ||
633 | p++; // skip over leading spaces | ||
634 | if (*p == '%') { // alias for 1,$ | ||
635 | p++; | ||
636 | *b = 1; | ||
637 | *e = count_lines(text, end-1); | ||
638 | goto ga0; | ||
639 | } | ||
640 | p = get_one_address(p, b); | ||
641 | while (isblnk(*p)) | ||
642 | p++; | ||
643 | if (*p == ',') { // is there a address separator | ||
644 | p++; | ||
645 | while (isblnk(*p)) | ||
646 | p++; | ||
647 | // get SECOND addr, if present | ||
648 | p = get_one_address(p, e); | ||
649 | } | ||
650 | ga0: | ||
651 | while (isblnk(*p)) | ||
652 | p++; // skip over trailing spaces | ||
653 | return (p); | ||
654 | } | ||
655 | |||
656 | #ifdef CONFIG_FEATURE_VI_SETOPTS | ||
657 | static void setops(const Byte *args, const char *opname, int flg_no, | ||
658 | const char *short_opname, int opt) | ||
659 | { | ||
660 | const char *a = (char *) args + flg_no; | ||
661 | int l = strlen(opname) - 1; /* opname have + ' ' */ | ||
662 | |||
663 | if (strncasecmp(a, opname, l) == 0 || | ||
664 | strncasecmp(a, short_opname, 2) == 0) { | ||
665 | if(flg_no) | ||
666 | vi_setops &= ~opt; | ||
667 | else | ||
668 | vi_setops |= opt; | ||
669 | } | ||
670 | } | ||
671 | #endif | ||
672 | |||
673 | static void colon(Byte * buf) | ||
674 | { | ||
675 | Byte c, *orig_buf, *buf1, *q, *r; | ||
676 | Byte *fn, cmd[BUFSIZ], args[BUFSIZ]; | ||
677 | int i, l, li, ch, st, b, e; | ||
678 | int useforce = FALSE, forced = FALSE; | ||
679 | struct stat st_buf; | ||
680 | |||
681 | // :3154 // if (-e line 3154) goto it else stay put | ||
682 | // :4,33w! foo // write a portion of buffer to file "foo" | ||
683 | // :w // write all of buffer to current file | ||
684 | // :q // quit | ||
685 | // :q! // quit- dont care about modified file | ||
686 | // :'a,'z!sort -u // filter block through sort | ||
687 | // :'f // goto mark "f" | ||
688 | // :'fl // list literal the mark "f" line | ||
689 | // :.r bar // read file "bar" into buffer before dot | ||
690 | // :/123/,/abc/d // delete lines from "123" line to "abc" line | ||
691 | // :/xyz/ // goto the "xyz" line | ||
692 | // :s/find/replace/ // substitute pattern "find" with "replace" | ||
693 | // :!<cmd> // run <cmd> then return | ||
694 | // | ||
695 | |||
696 | if (strlen((char *) buf) <= 0) | ||
697 | goto vc1; | ||
698 | if (*buf == ':') | ||
699 | buf++; // move past the ':' | ||
700 | |||
701 | li = st = ch = i = 0; | ||
702 | b = e = -1; | ||
703 | q = text; // assume 1,$ for the range | ||
704 | r = end - 1; | ||
705 | li = count_lines(text, end - 1); | ||
706 | fn = cfn; // default to current file | ||
707 | memset(cmd, '\0', BUFSIZ); // clear cmd[] | ||
708 | memset(args, '\0', BUFSIZ); // clear args[] | ||
709 | |||
710 | // look for optional address(es) :. :1 :1,9 :'q,'a :% | ||
711 | buf = get_address(buf, &b, &e); | ||
712 | |||
713 | // remember orig command line | ||
714 | orig_buf = buf; | ||
715 | |||
716 | // get the COMMAND into cmd[] | ||
717 | buf1 = cmd; | ||
718 | while (*buf != '\0') { | ||
719 | if (isspace(*buf)) | ||
720 | break; | ||
721 | *buf1++ = *buf++; | ||
722 | } | ||
723 | // get any ARGuments | ||
724 | while (isblnk(*buf)) | ||
725 | buf++; | ||
726 | strcpy((char *) args, (char *) buf); | ||
727 | buf1 = last_char_is((char *)cmd, '!'); | ||
728 | if (buf1) { | ||
729 | useforce = TRUE; | ||
730 | *buf1 = '\0'; // get rid of ! | ||
731 | } | ||
732 | if (b >= 0) { | ||
733 | // if there is only one addr, then the addr | ||
734 | // is the line number of the single line the | ||
735 | // user wants. So, reset the end | ||
736 | // pointer to point at end of the "b" line | ||
737 | q = find_line(b); // what line is #b | ||
738 | r = end_line(q); | ||
739 | li = 1; | ||
740 | } | ||
741 | if (e >= 0) { | ||
742 | // we were given two addrs. change the | ||
743 | // end pointer to the addr given by user. | ||
744 | r = find_line(e); // what line is #e | ||
745 | r = end_line(r); | ||
746 | li = e - b + 1; | ||
747 | } | ||
748 | // ------------ now look for the command ------------ | ||
749 | i = strlen((char *) cmd); | ||
750 | if (i == 0) { // :123CR goto line #123 | ||
751 | if (b >= 0) { | ||
752 | dot = find_line(b); // what line is #b | ||
753 | dot_skip_over_ws(); | ||
754 | } | ||
755 | } else if (strncmp((char *) cmd, "!", 1) == 0) { // run a cmd | ||
756 | // :!ls run the <cmd> | ||
757 | (void) alarm(0); // wait for input- no alarms | ||
758 | place_cursor(rows - 1, 0, FALSE); // go to Status line | ||
759 | clear_to_eol(); // clear the line | ||
760 | cookmode(); | ||
761 | system(orig_buf+1); // run the cmd | ||
762 | rawmode(); | ||
763 | Hit_Return(); // let user see results | ||
764 | (void) alarm(3); // done waiting for input | ||
765 | } else if (strncmp((char *) cmd, "=", i) == 0) { // where is the address | ||
766 | if (b < 0) { // no addr given- use defaults | ||
767 | b = e = count_lines(text, dot); | ||
768 | } | ||
769 | psb("%d", b); | ||
770 | } else if (strncasecmp((char *) cmd, "delete", i) == 0) { // delete lines | ||
771 | if (b < 0) { // no addr given- use defaults | ||
772 | q = begin_line(dot); // assume .,. for the range | ||
773 | r = end_line(dot); | ||
774 | } | ||
775 | dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines | ||
776 | dot_skip_over_ws(); | ||
777 | } else if (strncasecmp((char *) cmd, "edit", i) == 0) { // Edit a file | ||
778 | int sr; | ||
779 | sr= 0; | ||
780 | // don't edit, if the current file has been modified | ||
781 | if (file_modified && ! useforce) { | ||
782 | psbs("No write since last change (:edit! overrides)"); | ||
783 | goto vc1; | ||
784 | } | ||
785 | if (strlen(args) > 0) { | ||
786 | // the user supplied a file name | ||
787 | fn= args; | ||
788 | } else if (cfn != 0 && strlen(cfn) > 0) { | ||
789 | // no user supplied name- use the current filename | ||
790 | fn= cfn; | ||
791 | goto vc5; | ||
792 | } else { | ||
793 | // no user file name, no current name- punt | ||
794 | psbs("No current filename"); | ||
795 | goto vc1; | ||
796 | } | ||
797 | |||
798 | // see if file exists- if not, its just a new file request | ||
799 | if ((sr=stat((char*)fn, &st_buf)) < 0) { | ||
800 | // This is just a request for a new file creation. | ||
801 | // The file_insert below will fail but we get | ||
802 | // an empty buffer with a file name. Then the "write" | ||
803 | // command can do the create. | ||
804 | } else { | ||
805 | if ((st_buf.st_mode & (S_IFREG)) == 0) { | ||
806 | // This is not a regular file | ||
807 | psbs("\"%s\" is not a regular file", fn); | ||
808 | goto vc1; | ||
809 | } | ||
810 | if ((st_buf.st_mode & (S_IRUSR | S_IRGRP | S_IROTH)) == 0) { | ||
811 | // dont have any read permissions | ||
812 | psbs("\"%s\" is not readable", fn); | ||
813 | goto vc1; | ||
814 | } | ||
815 | } | ||
816 | |||
817 | // There is a read-able regular file | ||
818 | // make this the current file | ||
819 | q = (Byte *) bb_xstrdup((char *) fn); // save the cfn | ||
820 | free(cfn); // free the old name | ||
821 | cfn = q; // remember new cfn | ||
822 | |||
823 | vc5: | ||
824 | // delete all the contents of text[] | ||
825 | new_text(2 * file_size(fn)); | ||
826 | screenbegin = dot = end = text; | ||
827 | |||
828 | // insert new file | ||
829 | ch = file_insert(fn, text, file_size(fn)); | ||
830 | |||
831 | if (ch < 1) { | ||
832 | // start empty buf with dummy line | ||
833 | (void) char_insert(text, '\n'); | ||
834 | ch= 1; | ||
835 | } | ||
836 | file_modified = FALSE; | ||
837 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
838 | if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) { | ||
839 | free(reg[Ureg]); // free orig line reg- for 'U' | ||
840 | reg[Ureg]= 0; | ||
841 | } | ||
842 | if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) { | ||
843 | free(reg[YDreg]); // free default yank/delete register | ||
844 | reg[YDreg]= 0; | ||
845 | } | ||
846 | for (li = 0; li < 28; li++) { | ||
847 | mark[li] = 0; | ||
848 | } // init the marks | ||
849 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
850 | // how many lines in text[]? | ||
851 | li = count_lines(text, end - 1); | ||
852 | psb("\"%s\"%s" | ||
853 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
854 | "%s" | ||
855 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
856 | " %dL, %dC", cfn, | ||
857 | (sr < 0 ? " [New file]" : ""), | ||
858 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
859 | ((vi_readonly || readonly) ? " [Read only]" : ""), | ||
860 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
861 | li, ch); | ||
862 | } else if (strncasecmp((char *) cmd, "file", i) == 0) { // what File is this | ||
863 | if (b != -1 || e != -1) { | ||
864 | ni((Byte *) "No address allowed on this command"); | ||
865 | goto vc1; | ||
866 | } | ||
867 | if (strlen((char *) args) > 0) { | ||
868 | // user wants a new filename | ||
869 | free(cfn); | ||
870 | cfn = (Byte *) bb_xstrdup((char *) args); | ||
871 | } else { | ||
872 | // user wants file status info | ||
873 | edit_status(); | ||
874 | } | ||
875 | } else if (strncasecmp((char *) cmd, "features", i) == 0) { // what features are available | ||
876 | // print out values of all features | ||
877 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen | ||
878 | clear_to_eol(); // clear the line | ||
879 | cookmode(); | ||
880 | show_help(); | ||
881 | rawmode(); | ||
882 | Hit_Return(); | ||
883 | } else if (strncasecmp((char *) cmd, "list", i) == 0) { // literal print line | ||
884 | if (b < 0) { // no addr given- use defaults | ||
885 | q = begin_line(dot); // assume .,. for the range | ||
886 | r = end_line(dot); | ||
887 | } | ||
888 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen | ||
889 | clear_to_eol(); // clear the line | ||
890 | puts("\r"); | ||
891 | for (; q <= r; q++) { | ||
892 | int c_is_no_print; | ||
893 | |||
894 | c = *q; | ||
895 | c_is_no_print = c > 127 && !Isprint(c); | ||
896 | if (c_is_no_print) { | ||
897 | c = '.'; | ||
898 | standout_start(); | ||
899 | } | ||
900 | if (c == '\n') { | ||
901 | write1("$\r"); | ||
902 | } else if (c < ' ' || c == 127) { | ||
903 | putchar('^'); | ||
904 | if(c == 127) | ||
905 | c = '?'; | ||
906 | else | ||
907 | c += '@'; | ||
908 | } | ||
909 | putchar(c); | ||
910 | if (c_is_no_print) | ||
911 | standout_end(); | ||
912 | } | ||
913 | #ifdef CONFIG_FEATURE_VI_SET | ||
914 | vc2: | ||
915 | #endif /* CONFIG_FEATURE_VI_SET */ | ||
916 | Hit_Return(); | ||
917 | } else if ((strncasecmp((char *) cmd, "quit", i) == 0) || // Quit | ||
918 | (strncasecmp((char *) cmd, "next", i) == 0)) { // edit next file | ||
919 | if (useforce) { | ||
920 | // force end of argv list | ||
921 | if (*cmd == 'q') { | ||
922 | optind = save_argc; | ||
923 | } | ||
924 | editing = 0; | ||
925 | goto vc1; | ||
926 | } | ||
927 | // don't exit if the file been modified | ||
928 | if (file_modified) { | ||
929 | psbs("No write since last change (:%s! overrides)", | ||
930 | (*cmd == 'q' ? "quit" : "next")); | ||
931 | goto vc1; | ||
932 | } | ||
933 | // are there other file to edit | ||
934 | if (*cmd == 'q' && optind < save_argc - 1) { | ||
935 | psbs("%d more file to edit", (save_argc - optind - 1)); | ||
936 | goto vc1; | ||
937 | } | ||
938 | if (*cmd == 'n' && optind >= save_argc - 1) { | ||
939 | psbs("No more files to edit"); | ||
940 | goto vc1; | ||
941 | } | ||
942 | editing = 0; | ||
943 | } else if (strncasecmp((char *) cmd, "read", i) == 0) { // read file into text[] | ||
944 | fn = args; | ||
945 | if (strlen((char *) fn) <= 0) { | ||
946 | psbs("No filename given"); | ||
947 | goto vc1; | ||
948 | } | ||
949 | if (b < 0) { // no addr given- use defaults | ||
950 | q = begin_line(dot); // assume "dot" | ||
951 | } | ||
952 | // read after current line- unless user said ":0r foo" | ||
953 | if (b != 0) | ||
954 | q = next_line(q); | ||
955 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
956 | l= readonly; // remember current files' status | ||
957 | #endif | ||
958 | ch = file_insert(fn, q, file_size(fn)); | ||
959 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
960 | readonly= l; | ||
961 | #endif | ||
962 | if (ch < 0) | ||
963 | goto vc1; // nothing was inserted | ||
964 | // how many lines in text[]? | ||
965 | li = count_lines(q, q + ch - 1); | ||
966 | psb("\"%s\"" | ||
967 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
968 | "%s" | ||
969 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
970 | " %dL, %dC", fn, | ||
971 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
972 | ((vi_readonly || readonly) ? " [Read only]" : ""), | ||
973 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
974 | li, ch); | ||
975 | if (ch > 0) { | ||
976 | // if the insert is before "dot" then we need to update | ||
977 | if (q <= dot) | ||
978 | dot += ch; | ||
979 | file_modified = TRUE; | ||
980 | } | ||
981 | } else if (strncasecmp((char *) cmd, "rewind", i) == 0) { // rewind cmd line args | ||
982 | if (file_modified && ! useforce) { | ||
983 | psbs("No write since last change (:rewind! overrides)"); | ||
984 | } else { | ||
985 | // reset the filenames to edit | ||
986 | optind = fn_start - 1; | ||
987 | editing = 0; | ||
988 | } | ||
989 | #ifdef CONFIG_FEATURE_VI_SET | ||
990 | } else if (strncasecmp((char *) cmd, "set", i) == 0) { // set or clear features | ||
991 | i = 0; // offset into args | ||
992 | if (strlen((char *) args) == 0) { | ||
993 | // print out values of all options | ||
994 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen | ||
995 | clear_to_eol(); // clear the line | ||
996 | printf("----------------------------------------\r\n"); | ||
997 | #ifdef CONFIG_FEATURE_VI_SETOPTS | ||
998 | if (!autoindent) | ||
999 | printf("no"); | ||
1000 | printf("autoindent "); | ||
1001 | if (!err_method) | ||
1002 | printf("no"); | ||
1003 | printf("flash "); | ||
1004 | if (!ignorecase) | ||
1005 | printf("no"); | ||
1006 | printf("ignorecase "); | ||
1007 | if (!showmatch) | ||
1008 | printf("no"); | ||
1009 | printf("showmatch "); | ||
1010 | printf("tabstop=%d ", tabstop); | ||
1011 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ | ||
1012 | printf("\r\n"); | ||
1013 | goto vc2; | ||
1014 | } | ||
1015 | if (strncasecmp((char *) args, "no", 2) == 0) | ||
1016 | i = 2; // ":set noautoindent" | ||
1017 | #ifdef CONFIG_FEATURE_VI_SETOPTS | ||
1018 | setops(args, "autoindent ", i, "ai", VI_AUTOINDENT); | ||
1019 | setops(args, "flash ", i, "fl", VI_ERR_METHOD); | ||
1020 | setops(args, "ignorecase ", i, "ic", VI_IGNORECASE); | ||
1021 | setops(args, "showmatch ", i, "ic", VI_SHOWMATCH); | ||
1022 | if (strncasecmp((char *) args + i, "tabstop=%d ", 7) == 0) { | ||
1023 | sscanf(strchr((char *) args + i, '='), "=%d", &ch); | ||
1024 | if (ch > 0 && ch < columns - 1) | ||
1025 | tabstop = ch; | ||
1026 | } | ||
1027 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ | ||
1028 | #endif /* CONFIG_FEATURE_VI_SET */ | ||
1029 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
1030 | } else if (strncasecmp((char *) cmd, "s", 1) == 0) { // substitute a pattern with a replacement pattern | ||
1031 | Byte *ls, *F, *R; | ||
1032 | int gflag; | ||
1033 | |||
1034 | // F points to the "find" pattern | ||
1035 | // R points to the "replace" pattern | ||
1036 | // replace the cmd line delimiters "/" with NULLs | ||
1037 | gflag = 0; // global replace flag | ||
1038 | c = orig_buf[1]; // what is the delimiter | ||
1039 | F = orig_buf + 2; // start of "find" | ||
1040 | R = (Byte *) strchr((char *) F, c); // middle delimiter | ||
1041 | if (!R) goto colon_s_fail; | ||
1042 | *R++ = '\0'; // terminate "find" | ||
1043 | buf1 = (Byte *) strchr((char *) R, c); | ||
1044 | if (!buf1) goto colon_s_fail; | ||
1045 | *buf1++ = '\0'; // terminate "replace" | ||
1046 | if (*buf1 == 'g') { // :s/foo/bar/g | ||
1047 | buf1++; | ||
1048 | gflag++; // turn on gflag | ||
1049 | } | ||
1050 | q = begin_line(q); | ||
1051 | if (b < 0) { // maybe :s/foo/bar/ | ||
1052 | q = begin_line(dot); // start with cur line | ||
1053 | b = count_lines(text, q); // cur line number | ||
1054 | } | ||
1055 | if (e < 0) | ||
1056 | e = b; // maybe :.s/foo/bar/ | ||
1057 | for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0 | ||
1058 | ls = q; // orig line start | ||
1059 | vc4: | ||
1060 | buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find" | ||
1061 | if (buf1 != NULL) { | ||
1062 | // we found the "find" pattern- delete it | ||
1063 | (void) text_hole_delete(buf1, buf1 + strlen((char *) F) - 1); | ||
1064 | // inset the "replace" patern | ||
1065 | (void) string_insert(buf1, R); // insert the string | ||
1066 | // check for "global" :s/foo/bar/g | ||
1067 | if (gflag == 1) { | ||
1068 | if ((buf1 + strlen((char *) R)) < end_line(ls)) { | ||
1069 | q = buf1 + strlen((char *) R); | ||
1070 | goto vc4; // don't let q move past cur line | ||
1071 | } | ||
1072 | } | ||
1073 | } | ||
1074 | q = next_line(ls); | ||
1075 | } | ||
1076 | #endif /* CONFIG_FEATURE_VI_SEARCH */ | ||
1077 | } else if (strncasecmp((char *) cmd, "version", i) == 0) { // show software version | ||
1078 | psb("%s", vi_Version); | ||
1079 | } else if ((strncasecmp((char *) cmd, "write", i) == 0) || // write text to file | ||
1080 | (strncasecmp((char *) cmd, "wq", i) == 0) || | ||
1081 | (strncasecmp((char *) cmd, "x", i) == 0)) { | ||
1082 | // is there a file name to write to? | ||
1083 | if (strlen((char *) args) > 0) { | ||
1084 | fn = args; | ||
1085 | } | ||
1086 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
1087 | if ((vi_readonly || readonly) && ! useforce) { | ||
1088 | psbs("\"%s\" File is read only", fn); | ||
1089 | goto vc3; | ||
1090 | } | ||
1091 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
1092 | // how many lines in text[]? | ||
1093 | li = count_lines(q, r); | ||
1094 | ch = r - q + 1; | ||
1095 | // see if file exists- if not, its just a new file request | ||
1096 | if (useforce) { | ||
1097 | // if "fn" is not write-able, chmod u+w | ||
1098 | // sprintf(syscmd, "chmod u+w %s", fn); | ||
1099 | // system(syscmd); | ||
1100 | forced = TRUE; | ||
1101 | } | ||
1102 | l = file_write(fn, q, r); | ||
1103 | if (useforce && forced) { | ||
1104 | // chmod u-w | ||
1105 | // sprintf(syscmd, "chmod u-w %s", fn); | ||
1106 | // system(syscmd); | ||
1107 | forced = FALSE; | ||
1108 | } | ||
1109 | psb("\"%s\" %dL, %dC", fn, li, l); | ||
1110 | if (q == text && r == end - 1 && l == ch) | ||
1111 | file_modified = FALSE; | ||
1112 | if ((cmd[0] == 'x' || cmd[1] == 'q') && l == ch) { | ||
1113 | editing = 0; | ||
1114 | } | ||
1115 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
1116 | vc3:; | ||
1117 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
1118 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
1119 | } else if (strncasecmp((char *) cmd, "yank", i) == 0) { // yank lines | ||
1120 | if (b < 0) { // no addr given- use defaults | ||
1121 | q = begin_line(dot); // assume .,. for the range | ||
1122 | r = end_line(dot); | ||
1123 | } | ||
1124 | text_yank(q, r, YDreg); | ||
1125 | li = count_lines(q, r); | ||
1126 | psb("Yank %d lines (%d chars) into [%c]", | ||
1127 | li, strlen((char *) reg[YDreg]), what_reg()); | ||
1128 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
1129 | } else { | ||
1130 | // cmd unknown | ||
1131 | ni((Byte *) cmd); | ||
1132 | } | ||
1133 | vc1: | ||
1134 | dot = bound_dot(dot); // make sure "dot" is valid | ||
1135 | return; | ||
1136 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
1137 | colon_s_fail: | ||
1138 | psb(":s expression missing delimiters"); | ||
1139 | #endif | ||
1140 | } | ||
1141 | |||
1142 | static void Hit_Return(void) | ||
1143 | { | ||
1144 | char c; | ||
1145 | |||
1146 | standout_start(); // start reverse video | ||
1147 | write1("[Hit return to continue]"); | ||
1148 | standout_end(); // end reverse video | ||
1149 | while ((c = get_one_char()) != '\n' && c != '\r') /*do nothing */ | ||
1150 | ; | ||
1151 | redraw(TRUE); // force redraw all | ||
1152 | } | ||
1153 | #endif /* CONFIG_FEATURE_VI_COLON */ | ||
1154 | |||
1155 | //----- Synchronize the cursor to Dot -------------------------- | ||
1156 | static void sync_cursor(Byte * d, int *row, int *col) | ||
1157 | { | ||
1158 | Byte *beg_cur, *end_cur; // begin and end of "d" line | ||
1159 | Byte *beg_scr, *end_scr; // begin and end of screen | ||
1160 | Byte *tp; | ||
1161 | int cnt, ro, co; | ||
1162 | |||
1163 | beg_cur = begin_line(d); // first char of cur line | ||
1164 | end_cur = end_line(d); // last char of cur line | ||
1165 | |||
1166 | beg_scr = end_scr = screenbegin; // first char of screen | ||
1167 | end_scr = end_screen(); // last char of screen | ||
1168 | |||
1169 | if (beg_cur < screenbegin) { | ||
1170 | // "d" is before top line on screen | ||
1171 | // how many lines do we have to move | ||
1172 | cnt = count_lines(beg_cur, screenbegin); | ||
1173 | sc1: | ||
1174 | screenbegin = beg_cur; | ||
1175 | if (cnt > (rows - 1) / 2) { | ||
1176 | // we moved too many lines. put "dot" in middle of screen | ||
1177 | for (cnt = 0; cnt < (rows - 1) / 2; cnt++) { | ||
1178 | screenbegin = prev_line(screenbegin); | ||
1179 | } | ||
1180 | } | ||
1181 | } else if (beg_cur > end_scr) { | ||
1182 | // "d" is after bottom line on screen | ||
1183 | // how many lines do we have to move | ||
1184 | cnt = count_lines(end_scr, beg_cur); | ||
1185 | if (cnt > (rows - 1) / 2) | ||
1186 | goto sc1; // too many lines | ||
1187 | for (ro = 0; ro < cnt - 1; ro++) { | ||
1188 | // move screen begin the same amount | ||
1189 | screenbegin = next_line(screenbegin); | ||
1190 | // now, move the end of screen | ||
1191 | end_scr = next_line(end_scr); | ||
1192 | end_scr = end_line(end_scr); | ||
1193 | } | ||
1194 | } | ||
1195 | // "d" is on screen- find out which row | ||
1196 | tp = screenbegin; | ||
1197 | for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row | ||
1198 | if (tp == beg_cur) | ||
1199 | break; | ||
1200 | tp = next_line(tp); | ||
1201 | } | ||
1202 | |||
1203 | // find out what col "d" is on | ||
1204 | co = 0; | ||
1205 | do { // drive "co" to correct column | ||
1206 | if (*tp == '\n' || *tp == '\0') | ||
1207 | break; | ||
1208 | if (*tp == '\t') { | ||
1209 | // 7 - (co % 8 ) | ||
1210 | co += ((tabstop - 1) - (co % tabstop)); | ||
1211 | } else if (*tp < ' ' || *tp == 127) { | ||
1212 | co++; // display as ^X, use 2 columns | ||
1213 | } | ||
1214 | } while (tp++ < d && ++co); | ||
1215 | |||
1216 | // "co" is the column where "dot" is. | ||
1217 | // The screen has "columns" columns. | ||
1218 | // The currently displayed columns are 0+offset -- columns+ofset | ||
1219 | // |-------------------------------------------------------------| | ||
1220 | // ^ ^ ^ | ||
1221 | // offset | |------- columns ----------------| | ||
1222 | // | ||
1223 | // If "co" is already in this range then we do not have to adjust offset | ||
1224 | // but, we do have to subtract the "offset" bias from "co". | ||
1225 | // If "co" is outside this range then we have to change "offset". | ||
1226 | // If the first char of a line is a tab the cursor will try to stay | ||
1227 | // in column 7, but we have to set offset to 0. | ||
1228 | |||
1229 | if (co < 0 + offset) { | ||
1230 | offset = co; | ||
1231 | } | ||
1232 | if (co >= columns + offset) { | ||
1233 | offset = co - columns + 1; | ||
1234 | } | ||
1235 | // if the first char of the line is a tab, and "dot" is sitting on it | ||
1236 | // force offset to 0. | ||
1237 | if (d == beg_cur && *d == '\t') { | ||
1238 | offset = 0; | ||
1239 | } | ||
1240 | co -= offset; | ||
1241 | |||
1242 | *row = ro; | ||
1243 | *col = co; | ||
1244 | } | ||
1245 | |||
1246 | //----- Text Movement Routines --------------------------------- | ||
1247 | static Byte *begin_line(Byte * p) // return pointer to first char cur line | ||
1248 | { | ||
1249 | while (p > text && p[-1] != '\n') | ||
1250 | p--; // go to cur line B-o-l | ||
1251 | return (p); | ||
1252 | } | ||
1253 | |||
1254 | static Byte *end_line(Byte * p) // return pointer to NL of cur line line | ||
1255 | { | ||
1256 | while (p < end - 1 && *p != '\n') | ||
1257 | p++; // go to cur line E-o-l | ||
1258 | return (p); | ||
1259 | } | ||
1260 | |||
1261 | static inline Byte *dollar_line(Byte * p) // return pointer to just before NL line | ||
1262 | { | ||
1263 | while (p < end - 1 && *p != '\n') | ||
1264 | p++; // go to cur line E-o-l | ||
1265 | // Try to stay off of the Newline | ||
1266 | if (*p == '\n' && (p - begin_line(p)) > 0) | ||
1267 | p--; | ||
1268 | return (p); | ||
1269 | } | ||
1270 | |||
1271 | static Byte *prev_line(Byte * p) // return pointer first char prev line | ||
1272 | { | ||
1273 | p = begin_line(p); // goto begining of cur line | ||
1274 | if (p[-1] == '\n' && p > text) | ||
1275 | p--; // step to prev line | ||
1276 | p = begin_line(p); // goto begining of prev line | ||
1277 | return (p); | ||
1278 | } | ||
1279 | |||
1280 | static Byte *next_line(Byte * p) // return pointer first char next line | ||
1281 | { | ||
1282 | p = end_line(p); | ||
1283 | if (*p == '\n' && p < end - 1) | ||
1284 | p++; // step to next line | ||
1285 | return (p); | ||
1286 | } | ||
1287 | |||
1288 | //----- Text Information Routines ------------------------------ | ||
1289 | static Byte *end_screen(void) | ||
1290 | { | ||
1291 | Byte *q; | ||
1292 | int cnt; | ||
1293 | |||
1294 | // find new bottom line | ||
1295 | q = screenbegin; | ||
1296 | for (cnt = 0; cnt < rows - 2; cnt++) | ||
1297 | q = next_line(q); | ||
1298 | q = end_line(q); | ||
1299 | return (q); | ||
1300 | } | ||
1301 | |||
1302 | static int count_lines(Byte * start, Byte * stop) // count line from start to stop | ||
1303 | { | ||
1304 | Byte *q; | ||
1305 | int cnt; | ||
1306 | |||
1307 | if (stop < start) { // start and stop are backwards- reverse them | ||
1308 | q = start; | ||
1309 | start = stop; | ||
1310 | stop = q; | ||
1311 | } | ||
1312 | cnt = 0; | ||
1313 | stop = end_line(stop); // get to end of this line | ||
1314 | for (q = start; q <= stop && q <= end - 1; q++) { | ||
1315 | if (*q == '\n') | ||
1316 | cnt++; | ||
1317 | } | ||
1318 | return (cnt); | ||
1319 | } | ||
1320 | |||
1321 | static Byte *find_line(int li) // find begining of line #li | ||
1322 | { | ||
1323 | Byte *q; | ||
1324 | |||
1325 | for (q = text; li > 1; li--) { | ||
1326 | q = next_line(q); | ||
1327 | } | ||
1328 | return (q); | ||
1329 | } | ||
1330 | |||
1331 | //----- Dot Movement Routines ---------------------------------- | ||
1332 | static void dot_left(void) | ||
1333 | { | ||
1334 | if (dot > text && dot[-1] != '\n') | ||
1335 | dot--; | ||
1336 | } | ||
1337 | |||
1338 | static void dot_right(void) | ||
1339 | { | ||
1340 | if (dot < end - 1 && *dot != '\n') | ||
1341 | dot++; | ||
1342 | } | ||
1343 | |||
1344 | static void dot_begin(void) | ||
1345 | { | ||
1346 | dot = begin_line(dot); // return pointer to first char cur line | ||
1347 | } | ||
1348 | |||
1349 | static void dot_end(void) | ||
1350 | { | ||
1351 | dot = end_line(dot); // return pointer to last char cur line | ||
1352 | } | ||
1353 | |||
1354 | static Byte *move_to_col(Byte * p, int l) | ||
1355 | { | ||
1356 | int co; | ||
1357 | |||
1358 | p = begin_line(p); | ||
1359 | co = 0; | ||
1360 | do { | ||
1361 | if (*p == '\n' || *p == '\0') | ||
1362 | break; | ||
1363 | if (*p == '\t') { | ||
1364 | // 7 - (co % 8 ) | ||
1365 | co += ((tabstop - 1) - (co % tabstop)); | ||
1366 | } else if (*p < ' ' || *p == 127) { | ||
1367 | co++; // display as ^X, use 2 columns | ||
1368 | } | ||
1369 | } while (++co <= l && p++ < end); | ||
1370 | return (p); | ||
1371 | } | ||
1372 | |||
1373 | static void dot_next(void) | ||
1374 | { | ||
1375 | dot = next_line(dot); | ||
1376 | } | ||
1377 | |||
1378 | static void dot_prev(void) | ||
1379 | { | ||
1380 | dot = prev_line(dot); | ||
1381 | } | ||
1382 | |||
1383 | static void dot_scroll(int cnt, int dir) | ||
1384 | { | ||
1385 | Byte *q; | ||
1386 | |||
1387 | for (; cnt > 0; cnt--) { | ||
1388 | if (dir < 0) { | ||
1389 | // scroll Backwards | ||
1390 | // ctrl-Y scroll up one line | ||
1391 | screenbegin = prev_line(screenbegin); | ||
1392 | } else { | ||
1393 | // scroll Forwards | ||
1394 | // ctrl-E scroll down one line | ||
1395 | screenbegin = next_line(screenbegin); | ||
1396 | } | ||
1397 | } | ||
1398 | // make sure "dot" stays on the screen so we dont scroll off | ||
1399 | if (dot < screenbegin) | ||
1400 | dot = screenbegin; | ||
1401 | q = end_screen(); // find new bottom line | ||
1402 | if (dot > q) | ||
1403 | dot = begin_line(q); // is dot is below bottom line? | ||
1404 | dot_skip_over_ws(); | ||
1405 | } | ||
1406 | |||
1407 | static void dot_skip_over_ws(void) | ||
1408 | { | ||
1409 | // skip WS | ||
1410 | while (isspace(*dot) && *dot != '\n' && dot < end - 1) | ||
1411 | dot++; | ||
1412 | } | ||
1413 | |||
1414 | static void dot_delete(void) // delete the char at 'dot' | ||
1415 | { | ||
1416 | (void) text_hole_delete(dot, dot); | ||
1417 | } | ||
1418 | |||
1419 | static Byte *bound_dot(Byte * p) // make sure text[0] <= P < "end" | ||
1420 | { | ||
1421 | if (p >= end && end > text) { | ||
1422 | p = end - 1; | ||
1423 | indicate_error('1'); | ||
1424 | } | ||
1425 | if (p < text) { | ||
1426 | p = text; | ||
1427 | indicate_error('2'); | ||
1428 | } | ||
1429 | return (p); | ||
1430 | } | ||
1431 | |||
1432 | //----- Helper Utility Routines -------------------------------- | ||
1433 | |||
1434 | //---------------------------------------------------------------- | ||
1435 | //----- Char Routines -------------------------------------------- | ||
1436 | /* Chars that are part of a word- | ||
1437 | * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz | ||
1438 | * Chars that are Not part of a word (stoppers) | ||
1439 | * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~ | ||
1440 | * Chars that are WhiteSpace | ||
1441 | * TAB NEWLINE VT FF RETURN SPACE | ||
1442 | * DO NOT COUNT NEWLINE AS WHITESPACE | ||
1443 | */ | ||
1444 | |||
1445 | static Byte *new_screen(int ro, int co) | ||
1446 | { | ||
1447 | int li; | ||
1448 | |||
1449 | free(screen); | ||
1450 | screensize = ro * co + 8; | ||
1451 | screen = (Byte *) xmalloc(screensize); | ||
1452 | // initialize the new screen. assume this will be a empty file. | ||
1453 | screen_erase(); | ||
1454 | // non-existent text[] lines start with a tilde (~). | ||
1455 | for (li = 1; li < ro - 1; li++) { | ||
1456 | screen[(li * co) + 0] = '~'; | ||
1457 | } | ||
1458 | return (screen); | ||
1459 | } | ||
1460 | |||
1461 | static Byte *new_text(int size) | ||
1462 | { | ||
1463 | if (size < 10240) | ||
1464 | size = 10240; // have a minimum size for new files | ||
1465 | free(text); | ||
1466 | text = (Byte *) xmalloc(size + 8); | ||
1467 | memset(text, '\0', size); // clear new text[] | ||
1468 | //text += 4; // leave some room for "oops" | ||
1469 | textend = text + size - 1; | ||
1470 | //textend -= 4; // leave some root for "oops" | ||
1471 | return (text); | ||
1472 | } | ||
1473 | |||
1474 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
1475 | static int mycmp(Byte * s1, Byte * s2, int len) | ||
1476 | { | ||
1477 | int i; | ||
1478 | |||
1479 | i = strncmp((char *) s1, (char *) s2, len); | ||
1480 | #ifdef CONFIG_FEATURE_VI_SETOPTS | ||
1481 | if (ignorecase) { | ||
1482 | i = strncasecmp((char *) s1, (char *) s2, len); | ||
1483 | } | ||
1484 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ | ||
1485 | return (i); | ||
1486 | } | ||
1487 | |||
1488 | static Byte *char_search(Byte * p, Byte * pat, int dir, int range) // search for pattern starting at p | ||
1489 | { | ||
1490 | #ifndef REGEX_SEARCH | ||
1491 | Byte *start, *stop; | ||
1492 | int len; | ||
1493 | |||
1494 | len = strlen((char *) pat); | ||
1495 | if (dir == FORWARD) { | ||
1496 | stop = end - 1; // assume range is p - end-1 | ||
1497 | if (range == LIMITED) | ||
1498 | stop = next_line(p); // range is to next line | ||
1499 | for (start = p; start < stop; start++) { | ||
1500 | if (mycmp(start, pat, len) == 0) { | ||
1501 | return (start); | ||
1502 | } | ||
1503 | } | ||
1504 | } else if (dir == BACK) { | ||
1505 | stop = text; // assume range is text - p | ||
1506 | if (range == LIMITED) | ||
1507 | stop = prev_line(p); // range is to prev line | ||
1508 | for (start = p - len; start >= stop; start--) { | ||
1509 | if (mycmp(start, pat, len) == 0) { | ||
1510 | return (start); | ||
1511 | } | ||
1512 | } | ||
1513 | } | ||
1514 | // pattern not found | ||
1515 | return (NULL); | ||
1516 | #else /*REGEX_SEARCH */ | ||
1517 | char *q; | ||
1518 | struct re_pattern_buffer preg; | ||
1519 | int i; | ||
1520 | int size, range; | ||
1521 | |||
1522 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED; | ||
1523 | preg.translate = 0; | ||
1524 | preg.fastmap = 0; | ||
1525 | preg.buffer = 0; | ||
1526 | preg.allocated = 0; | ||
1527 | |||
1528 | // assume a LIMITED forward search | ||
1529 | q = next_line(p); | ||
1530 | q = end_line(q); | ||
1531 | q = end - 1; | ||
1532 | if (dir == BACK) { | ||
1533 | q = prev_line(p); | ||
1534 | q = text; | ||
1535 | } | ||
1536 | // count the number of chars to search over, forward or backward | ||
1537 | size = q - p; | ||
1538 | if (size < 0) | ||
1539 | size = p - q; | ||
1540 | // RANGE could be negative if we are searching backwards | ||
1541 | range = q - p; | ||
1542 | |||
1543 | q = (char *) re_compile_pattern(pat, strlen((char *) pat), &preg); | ||
1544 | if (q != 0) { | ||
1545 | // The pattern was not compiled | ||
1546 | psbs("bad search pattern: \"%s\": %s", pat, q); | ||
1547 | i = 0; // return p if pattern not compiled | ||
1548 | goto cs1; | ||
1549 | } | ||
1550 | |||
1551 | q = p; | ||
1552 | if (range < 0) { | ||
1553 | q = p - size; | ||
1554 | if (q < text) | ||
1555 | q = text; | ||
1556 | } | ||
1557 | // search for the compiled pattern, preg, in p[] | ||
1558 | // range < 0- search backward | ||
1559 | // range > 0- search forward | ||
1560 | // 0 < start < size | ||
1561 | // re_search() < 0 not found or error | ||
1562 | // re_search() > 0 index of found pattern | ||
1563 | // struct pattern char int int int struct reg | ||
1564 | // re_search (*pattern_buffer, *string, size, start, range, *regs) | ||
1565 | i = re_search(&preg, q, size, 0, range, 0); | ||
1566 | if (i == -1) { | ||
1567 | p = 0; | ||
1568 | i = 0; // return NULL if pattern not found | ||
1569 | } | ||
1570 | cs1: | ||
1571 | if (dir == FORWARD) { | ||
1572 | p = p + i; | ||
1573 | } else { | ||
1574 | p = p - i; | ||
1575 | } | ||
1576 | return (p); | ||
1577 | #endif /*REGEX_SEARCH */ | ||
1578 | } | ||
1579 | #endif /* CONFIG_FEATURE_VI_SEARCH */ | ||
1580 | |||
1581 | static Byte *char_insert(Byte * p, Byte c) // insert the char c at 'p' | ||
1582 | { | ||
1583 | if (c == 22) { // Is this an ctrl-V? | ||
1584 | p = stupid_insert(p, '^'); // use ^ to indicate literal next | ||
1585 | p--; // backup onto ^ | ||
1586 | refresh(FALSE); // show the ^ | ||
1587 | c = get_one_char(); | ||
1588 | *p = c; | ||
1589 | p++; | ||
1590 | file_modified = TRUE; // has the file been modified | ||
1591 | } else if (c == 27) { // Is this an ESC? | ||
1592 | cmd_mode = 0; | ||
1593 | cmdcnt = 0; | ||
1594 | end_cmd_q(); // stop adding to q | ||
1595 | strcpy((char *) status_buffer, " "); // clear the status buffer | ||
1596 | if ((p[-1] != '\n') && (dot>text)) { | ||
1597 | p--; | ||
1598 | } | ||
1599 | } else if (c == erase_char) { // Is this a BS | ||
1600 | // 123456789 | ||
1601 | if ((p[-1] != '\n') && (dot>text)) { | ||
1602 | p--; | ||
1603 | p = text_hole_delete(p, p); // shrink buffer 1 char | ||
1604 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
1605 | // also rmove char from last_modifying_cmd | ||
1606 | if (last_modifying_cmd != 0 && strlen((char *) last_modifying_cmd) > 0) { | ||
1607 | Byte *q; | ||
1608 | |||
1609 | q = last_modifying_cmd; | ||
1610 | q[strlen((char *) q) - 1] = '\0'; // erase BS | ||
1611 | q[strlen((char *) q) - 1] = '\0'; // erase prev char | ||
1612 | } | ||
1613 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
1614 | } | ||
1615 | } else { | ||
1616 | // insert a char into text[] | ||
1617 | Byte *sp; // "save p" | ||
1618 | |||
1619 | if (c == 13) | ||
1620 | c = '\n'; // translate \r to \n | ||
1621 | sp = p; // remember addr of insert | ||
1622 | p = stupid_insert(p, c); // insert the char | ||
1623 | #ifdef CONFIG_FEATURE_VI_SETOPTS | ||
1624 | if (showmatch && strchr(")]}", *sp) != NULL) { | ||
1625 | showmatching(sp); | ||
1626 | } | ||
1627 | if (autoindent && c == '\n') { // auto indent the new line | ||
1628 | Byte *q; | ||
1629 | |||
1630 | q = prev_line(p); // use prev line as templet | ||
1631 | for (; isblnk(*q); q++) { | ||
1632 | p = stupid_insert(p, *q); // insert the char | ||
1633 | } | ||
1634 | } | ||
1635 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ | ||
1636 | } | ||
1637 | return (p); | ||
1638 | } | ||
1639 | |||
1640 | static Byte *stupid_insert(Byte * p, Byte c) // stupidly insert the char c at 'p' | ||
1641 | { | ||
1642 | p = text_hole_make(p, 1); | ||
1643 | if (p != 0) { | ||
1644 | *p = c; | ||
1645 | file_modified = TRUE; // has the file been modified | ||
1646 | p++; | ||
1647 | } | ||
1648 | return (p); | ||
1649 | } | ||
1650 | |||
1651 | static Byte find_range(Byte ** start, Byte ** stop, Byte c) | ||
1652 | { | ||
1653 | Byte *save_dot, *p, *q; | ||
1654 | int cnt; | ||
1655 | |||
1656 | save_dot = dot; | ||
1657 | p = q = dot; | ||
1658 | |||
1659 | if (strchr("cdy><", c)) { | ||
1660 | // these cmds operate on whole lines | ||
1661 | p = q = begin_line(p); | ||
1662 | for (cnt = 1; cnt < cmdcnt; cnt++) { | ||
1663 | q = next_line(q); | ||
1664 | } | ||
1665 | q = end_line(q); | ||
1666 | } else if (strchr("^%$0bBeEft", c)) { | ||
1667 | // These cmds operate on char positions | ||
1668 | do_cmd(c); // execute movement cmd | ||
1669 | q = dot; | ||
1670 | } else if (strchr("wW", c)) { | ||
1671 | do_cmd(c); // execute movement cmd | ||
1672 | // if we are at the next word's first char | ||
1673 | // step back one char | ||
1674 | // but check the possibilities when it is true | ||
1675 | if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0])) | ||
1676 | || (ispunct(dot[-1]) && !ispunct(dot[0])) | ||
1677 | || (isalnum(dot[-1]) && !isalnum(dot[0])))) | ||
1678 | dot--; // move back off of next word | ||
1679 | if (dot > text && *dot == '\n') | ||
1680 | dot--; // stay off NL | ||
1681 | q = dot; | ||
1682 | } else if (strchr("H-k{", c)) { | ||
1683 | // these operate on multi-lines backwards | ||
1684 | q = end_line(dot); // find NL | ||
1685 | do_cmd(c); // execute movement cmd | ||
1686 | dot_begin(); | ||
1687 | p = dot; | ||
1688 | } else if (strchr("L+j}\r\n", c)) { | ||
1689 | // these operate on multi-lines forwards | ||
1690 | p = begin_line(dot); | ||
1691 | do_cmd(c); // execute movement cmd | ||
1692 | dot_end(); // find NL | ||
1693 | q = dot; | ||
1694 | } else { | ||
1695 | c = 27; // error- return an ESC char | ||
1696 | //break; | ||
1697 | } | ||
1698 | *start = p; | ||
1699 | *stop = q; | ||
1700 | if (q < p) { | ||
1701 | *start = q; | ||
1702 | *stop = p; | ||
1703 | } | ||
1704 | dot = save_dot; | ||
1705 | return (c); | ||
1706 | } | ||
1707 | |||
1708 | static int st_test(Byte * p, int type, int dir, Byte * tested) | ||
1709 | { | ||
1710 | Byte c, c0, ci; | ||
1711 | int test, inc; | ||
1712 | |||
1713 | inc = dir; | ||
1714 | c = c0 = p[0]; | ||
1715 | ci = p[inc]; | ||
1716 | test = 0; | ||
1717 | |||
1718 | if (type == S_BEFORE_WS) { | ||
1719 | c = ci; | ||
1720 | test = ((!isspace(c)) || c == '\n'); | ||
1721 | } | ||
1722 | if (type == S_TO_WS) { | ||
1723 | c = c0; | ||
1724 | test = ((!isspace(c)) || c == '\n'); | ||
1725 | } | ||
1726 | if (type == S_OVER_WS) { | ||
1727 | c = c0; | ||
1728 | test = ((isspace(c))); | ||
1729 | } | ||
1730 | if (type == S_END_PUNCT) { | ||
1731 | c = ci; | ||
1732 | test = ((ispunct(c))); | ||
1733 | } | ||
1734 | if (type == S_END_ALNUM) { | ||
1735 | c = ci; | ||
1736 | test = ((isalnum(c)) || c == '_'); | ||
1737 | } | ||
1738 | *tested = c; | ||
1739 | return (test); | ||
1740 | } | ||
1741 | |||
1742 | static Byte *skip_thing(Byte * p, int linecnt, int dir, int type) | ||
1743 | { | ||
1744 | Byte c; | ||
1745 | |||
1746 | while (st_test(p, type, dir, &c)) { | ||
1747 | // make sure we limit search to correct number of lines | ||
1748 | if (c == '\n' && --linecnt < 1) | ||
1749 | break; | ||
1750 | if (dir >= 0 && p >= end - 1) | ||
1751 | break; | ||
1752 | if (dir < 0 && p <= text) | ||
1753 | break; | ||
1754 | p += dir; // move to next char | ||
1755 | } | ||
1756 | return (p); | ||
1757 | } | ||
1758 | |||
1759 | // find matching char of pair () [] {} | ||
1760 | static Byte *find_pair(Byte * p, Byte c) | ||
1761 | { | ||
1762 | Byte match, *q; | ||
1763 | int dir, level; | ||
1764 | |||
1765 | match = ')'; | ||
1766 | level = 1; | ||
1767 | dir = 1; // assume forward | ||
1768 | switch (c) { | ||
1769 | case '(': | ||
1770 | match = ')'; | ||
1771 | break; | ||
1772 | case '[': | ||
1773 | match = ']'; | ||
1774 | break; | ||
1775 | case '{': | ||
1776 | match = '}'; | ||
1777 | break; | ||
1778 | case ')': | ||
1779 | match = '('; | ||
1780 | dir = -1; | ||
1781 | break; | ||
1782 | case ']': | ||
1783 | match = '['; | ||
1784 | dir = -1; | ||
1785 | break; | ||
1786 | case '}': | ||
1787 | match = '{'; | ||
1788 | dir = -1; | ||
1789 | break; | ||
1790 | } | ||
1791 | for (q = p + dir; text <= q && q < end; q += dir) { | ||
1792 | // look for match, count levels of pairs (( )) | ||
1793 | if (*q == c) | ||
1794 | level++; // increase pair levels | ||
1795 | if (*q == match) | ||
1796 | level--; // reduce pair level | ||
1797 | if (level == 0) | ||
1798 | break; // found matching pair | ||
1799 | } | ||
1800 | if (level != 0) | ||
1801 | q = NULL; // indicate no match | ||
1802 | return (q); | ||
1803 | } | ||
1804 | |||
1805 | #ifdef CONFIG_FEATURE_VI_SETOPTS | ||
1806 | // show the matching char of a pair, () [] {} | ||
1807 | static void showmatching(Byte * p) | ||
1808 | { | ||
1809 | Byte *q, *save_dot; | ||
1810 | |||
1811 | // we found half of a pair | ||
1812 | q = find_pair(p, *p); // get loc of matching char | ||
1813 | if (q == NULL) { | ||
1814 | indicate_error('3'); // no matching char | ||
1815 | } else { | ||
1816 | // "q" now points to matching pair | ||
1817 | save_dot = dot; // remember where we are | ||
1818 | dot = q; // go to new loc | ||
1819 | refresh(FALSE); // let the user see it | ||
1820 | (void) mysleep(40); // give user some time | ||
1821 | dot = save_dot; // go back to old loc | ||
1822 | refresh(FALSE); | ||
1823 | } | ||
1824 | } | ||
1825 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ | ||
1826 | |||
1827 | // open a hole in text[] | ||
1828 | static Byte *text_hole_make(Byte * p, int size) // at "p", make a 'size' byte hole | ||
1829 | { | ||
1830 | Byte *src, *dest; | ||
1831 | int cnt; | ||
1832 | |||
1833 | if (size <= 0) | ||
1834 | goto thm0; | ||
1835 | src = p; | ||
1836 | dest = p + size; | ||
1837 | cnt = end - src; // the rest of buffer | ||
1838 | if (memmove(dest, src, cnt) != dest) { | ||
1839 | psbs("can't create room for new characters"); | ||
1840 | } | ||
1841 | memset(p, ' ', size); // clear new hole | ||
1842 | end = end + size; // adjust the new END | ||
1843 | file_modified = TRUE; // has the file been modified | ||
1844 | thm0: | ||
1845 | return (p); | ||
1846 | } | ||
1847 | |||
1848 | // close a hole in text[] | ||
1849 | static Byte *text_hole_delete(Byte * p, Byte * q) // delete "p" thru "q", inclusive | ||
1850 | { | ||
1851 | Byte *src, *dest; | ||
1852 | int cnt, hole_size; | ||
1853 | |||
1854 | // move forwards, from beginning | ||
1855 | // assume p <= q | ||
1856 | src = q + 1; | ||
1857 | dest = p; | ||
1858 | if (q < p) { // they are backward- swap them | ||
1859 | src = p + 1; | ||
1860 | dest = q; | ||
1861 | } | ||
1862 | hole_size = q - p + 1; | ||
1863 | cnt = end - src; | ||
1864 | if (src < text || src > end) | ||
1865 | goto thd0; | ||
1866 | if (dest < text || dest >= end) | ||
1867 | goto thd0; | ||
1868 | if (src >= end) | ||
1869 | goto thd_atend; // just delete the end of the buffer | ||
1870 | if (memmove(dest, src, cnt) != dest) { | ||
1871 | psbs("can't delete the character"); | ||
1872 | } | ||
1873 | thd_atend: | ||
1874 | end = end - hole_size; // adjust the new END | ||
1875 | if (dest >= end) | ||
1876 | dest = end - 1; // make sure dest in below end-1 | ||
1877 | if (end <= text) | ||
1878 | dest = end = text; // keep pointers valid | ||
1879 | file_modified = TRUE; // has the file been modified | ||
1880 | thd0: | ||
1881 | return (dest); | ||
1882 | } | ||
1883 | |||
1884 | // copy text into register, then delete text. | ||
1885 | // if dist <= 0, do not include, or go past, a NewLine | ||
1886 | // | ||
1887 | static Byte *yank_delete(Byte * start, Byte * stop, int dist, int yf) | ||
1888 | { | ||
1889 | Byte *p; | ||
1890 | |||
1891 | // make sure start <= stop | ||
1892 | if (start > stop) { | ||
1893 | // they are backwards, reverse them | ||
1894 | p = start; | ||
1895 | start = stop; | ||
1896 | stop = p; | ||
1897 | } | ||
1898 | if (dist <= 0) { | ||
1899 | // we can not cross NL boundaries | ||
1900 | p = start; | ||
1901 | if (*p == '\n') | ||
1902 | return (p); | ||
1903 | // dont go past a NewLine | ||
1904 | for (; p + 1 <= stop; p++) { | ||
1905 | if (p[1] == '\n') { | ||
1906 | stop = p; // "stop" just before NewLine | ||
1907 | break; | ||
1908 | } | ||
1909 | } | ||
1910 | } | ||
1911 | p = start; | ||
1912 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
1913 | text_yank(start, stop, YDreg); | ||
1914 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
1915 | if (yf == YANKDEL) { | ||
1916 | p = text_hole_delete(start, stop); | ||
1917 | } // delete lines | ||
1918 | return (p); | ||
1919 | } | ||
1920 | |||
1921 | static void show_help(void) | ||
1922 | { | ||
1923 | puts("These features are available:" | ||
1924 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
1925 | "\n\tPattern searches with / and ?" | ||
1926 | #endif /* CONFIG_FEATURE_VI_SEARCH */ | ||
1927 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
1928 | "\n\tLast command repeat with \'.\'" | ||
1929 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
1930 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
1931 | "\n\tLine marking with 'x" | ||
1932 | "\n\tNamed buffers with \"x" | ||
1933 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
1934 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
1935 | "\n\tReadonly if vi is called as \"view\"" | ||
1936 | "\n\tReadonly with -R command line arg" | ||
1937 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
1938 | #ifdef CONFIG_FEATURE_VI_SET | ||
1939 | "\n\tSome colon mode commands with \':\'" | ||
1940 | #endif /* CONFIG_FEATURE_VI_SET */ | ||
1941 | #ifdef CONFIG_FEATURE_VI_SETOPTS | ||
1942 | "\n\tSettable options with \":set\"" | ||
1943 | #endif /* CONFIG_FEATURE_VI_SETOPTS */ | ||
1944 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS | ||
1945 | "\n\tSignal catching- ^C" | ||
1946 | "\n\tJob suspend and resume with ^Z" | ||
1947 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ | ||
1948 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE | ||
1949 | "\n\tAdapt to window re-sizes" | ||
1950 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ | ||
1951 | ); | ||
1952 | } | ||
1953 | |||
1954 | static inline void print_literal(Byte * buf, Byte * s) // copy s to buf, convert unprintable | ||
1955 | { | ||
1956 | Byte c, b[2]; | ||
1957 | |||
1958 | b[1] = '\0'; | ||
1959 | strcpy((char *) buf, ""); // init buf | ||
1960 | if (strlen((char *) s) <= 0) | ||
1961 | s = (Byte *) "(NULL)"; | ||
1962 | for (; *s > '\0'; s++) { | ||
1963 | int c_is_no_print; | ||
1964 | |||
1965 | c = *s; | ||
1966 | c_is_no_print = c > 127 && !Isprint(c); | ||
1967 | if (c_is_no_print) { | ||
1968 | strcat((char *) buf, SOn); | ||
1969 | c = '.'; | ||
1970 | } | ||
1971 | if (c < ' ' || c == 127) { | ||
1972 | strcat((char *) buf, "^"); | ||
1973 | if(c == 127) | ||
1974 | c = '?'; | ||
1975 | else | ||
1976 | c += '@'; | ||
1977 | } | ||
1978 | b[0] = c; | ||
1979 | strcat((char *) buf, (char *) b); | ||
1980 | if (c_is_no_print) | ||
1981 | strcat((char *) buf, SOs); | ||
1982 | if (*s == '\n') { | ||
1983 | strcat((char *) buf, "$"); | ||
1984 | } | ||
1985 | } | ||
1986 | } | ||
1987 | |||
1988 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
1989 | static void start_new_cmd_q(Byte c) | ||
1990 | { | ||
1991 | // release old cmd | ||
1992 | free(last_modifying_cmd); | ||
1993 | // get buffer for new cmd | ||
1994 | last_modifying_cmd = (Byte *) xmalloc(BUFSIZ); | ||
1995 | memset(last_modifying_cmd, '\0', BUFSIZ); // clear new cmd queue | ||
1996 | // if there is a current cmd count put it in the buffer first | ||
1997 | if (cmdcnt > 0) | ||
1998 | sprintf((char *) last_modifying_cmd, "%d", cmdcnt); | ||
1999 | // save char c onto queue | ||
2000 | last_modifying_cmd[strlen((char *) last_modifying_cmd)] = c; | ||
2001 | adding2q = 1; | ||
2002 | return; | ||
2003 | } | ||
2004 | |||
2005 | static void end_cmd_q(void) | ||
2006 | { | ||
2007 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
2008 | YDreg = 26; // go back to default Yank/Delete reg | ||
2009 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
2010 | adding2q = 0; | ||
2011 | return; | ||
2012 | } | ||
2013 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
2014 | |||
2015 | #if defined(CONFIG_FEATURE_VI_YANKMARK) || defined(CONFIG_FEATURE_VI_COLON) || defined(CONFIG_FEATURE_VI_CRASHME) | ||
2016 | static Byte *string_insert(Byte * p, Byte * s) // insert the string at 'p' | ||
2017 | { | ||
2018 | int cnt, i; | ||
2019 | |||
2020 | i = strlen((char *) s); | ||
2021 | p = text_hole_make(p, i); | ||
2022 | strncpy((char *) p, (char *) s, i); | ||
2023 | for (cnt = 0; *s != '\0'; s++) { | ||
2024 | if (*s == '\n') | ||
2025 | cnt++; | ||
2026 | } | ||
2027 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
2028 | psb("Put %d lines (%d chars) from [%c]", cnt, i, what_reg()); | ||
2029 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
2030 | return (p); | ||
2031 | } | ||
2032 | #endif /* CONFIG_FEATURE_VI_YANKMARK || CONFIG_FEATURE_VI_COLON || CONFIG_FEATURE_VI_CRASHME */ | ||
2033 | |||
2034 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
2035 | static Byte *text_yank(Byte * p, Byte * q, int dest) // copy text into a register | ||
2036 | { | ||
2037 | Byte *t; | ||
2038 | int cnt; | ||
2039 | |||
2040 | if (q < p) { // they are backwards- reverse them | ||
2041 | t = q; | ||
2042 | q = p; | ||
2043 | p = t; | ||
2044 | } | ||
2045 | cnt = q - p + 1; | ||
2046 | t = reg[dest]; | ||
2047 | free(t); // if already a yank register, free it | ||
2048 | t = (Byte *) xmalloc(cnt + 1); // get a new register | ||
2049 | memset(t, '\0', cnt + 1); // clear new text[] | ||
2050 | strncpy((char *) t, (char *) p, cnt); // copy text[] into bufer | ||
2051 | reg[dest] = t; | ||
2052 | return (p); | ||
2053 | } | ||
2054 | |||
2055 | static Byte what_reg(void) | ||
2056 | { | ||
2057 | Byte c; | ||
2058 | int i; | ||
2059 | |||
2060 | i = 0; | ||
2061 | c = 'D'; // default to D-reg | ||
2062 | if (0 <= YDreg && YDreg <= 25) | ||
2063 | c = 'a' + (Byte) YDreg; | ||
2064 | if (YDreg == 26) | ||
2065 | c = 'D'; | ||
2066 | if (YDreg == 27) | ||
2067 | c = 'U'; | ||
2068 | return (c); | ||
2069 | } | ||
2070 | |||
2071 | static void check_context(Byte cmd) | ||
2072 | { | ||
2073 | // A context is defined to be "modifying text" | ||
2074 | // Any modifying command establishes a new context. | ||
2075 | |||
2076 | if (dot < context_start || dot > context_end) { | ||
2077 | if (strchr((char *) modifying_cmds, cmd) != NULL) { | ||
2078 | // we are trying to modify text[]- make this the current context | ||
2079 | mark[27] = mark[26]; // move cur to prev | ||
2080 | mark[26] = dot; // move local to cur | ||
2081 | context_start = prev_line(prev_line(dot)); | ||
2082 | context_end = next_line(next_line(dot)); | ||
2083 | //loiter= start_loiter= now; | ||
2084 | } | ||
2085 | } | ||
2086 | return; | ||
2087 | } | ||
2088 | |||
2089 | static inline Byte *swap_context(Byte * p) // goto new context for '' command make this the current context | ||
2090 | { | ||
2091 | Byte *tmp; | ||
2092 | |||
2093 | // the current context is in mark[26] | ||
2094 | // the previous context is in mark[27] | ||
2095 | // only swap context if other context is valid | ||
2096 | if (text <= mark[27] && mark[27] <= end - 1) { | ||
2097 | tmp = mark[27]; | ||
2098 | mark[27] = mark[26]; | ||
2099 | mark[26] = tmp; | ||
2100 | p = mark[26]; // where we are going- previous context | ||
2101 | context_start = prev_line(prev_line(prev_line(p))); | ||
2102 | context_end = next_line(next_line(next_line(p))); | ||
2103 | } | ||
2104 | return (p); | ||
2105 | } | ||
2106 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
2107 | |||
2108 | static int isblnk(Byte c) // is the char a blank or tab | ||
2109 | { | ||
2110 | return (c == ' ' || c == '\t'); | ||
2111 | } | ||
2112 | |||
2113 | //----- Set terminal attributes -------------------------------- | ||
2114 | static void rawmode(void) | ||
2115 | { | ||
2116 | tcgetattr(0, &term_orig); | ||
2117 | term_vi = term_orig; | ||
2118 | term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's | ||
2119 | term_vi.c_iflag &= (~IXON & ~ICRNL); | ||
2120 | term_vi.c_oflag &= (~ONLCR); | ||
2121 | term_vi.c_cc[VMIN] = 1; | ||
2122 | term_vi.c_cc[VTIME] = 0; | ||
2123 | erase_char = term_vi.c_cc[VERASE]; | ||
2124 | tcsetattr(0, TCSANOW, &term_vi); | ||
2125 | } | ||
2126 | |||
2127 | static void cookmode(void) | ||
2128 | { | ||
2129 | fflush(stdout); | ||
2130 | tcsetattr(0, TCSANOW, &term_orig); | ||
2131 | } | ||
2132 | |||
2133 | //----- Come here when we get a window resize signal --------- | ||
2134 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS | ||
2135 | static void winch_sig(int sig) | ||
2136 | { | ||
2137 | signal(SIGWINCH, winch_sig); | ||
2138 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE | ||
2139 | window_size_get(0); | ||
2140 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ | ||
2141 | new_screen(rows, columns); // get memory for virtual screen | ||
2142 | redraw(TRUE); // re-draw the screen | ||
2143 | } | ||
2144 | |||
2145 | //----- Come here when we get a continue signal ------------------- | ||
2146 | static void cont_sig(int sig) | ||
2147 | { | ||
2148 | rawmode(); // terminal to "raw" | ||
2149 | *status_buffer = '\0'; // clear the status buffer | ||
2150 | redraw(TRUE); // re-draw the screen | ||
2151 | |||
2152 | signal(SIGTSTP, suspend_sig); | ||
2153 | signal(SIGCONT, SIG_DFL); | ||
2154 | kill(my_pid, SIGCONT); | ||
2155 | } | ||
2156 | |||
2157 | //----- Come here when we get a Suspend signal ------------------- | ||
2158 | static void suspend_sig(int sig) | ||
2159 | { | ||
2160 | place_cursor(rows - 1, 0, FALSE); // go to bottom of screen | ||
2161 | clear_to_eol(); // Erase to end of line | ||
2162 | cookmode(); // terminal to "cooked" | ||
2163 | |||
2164 | signal(SIGCONT, cont_sig); | ||
2165 | signal(SIGTSTP, SIG_DFL); | ||
2166 | kill(my_pid, SIGTSTP); | ||
2167 | } | ||
2168 | |||
2169 | //----- Come here when we get a signal --------------------------- | ||
2170 | static void catch_sig(int sig) | ||
2171 | { | ||
2172 | signal(SIGHUP, catch_sig); | ||
2173 | signal(SIGINT, catch_sig); | ||
2174 | signal(SIGTERM, catch_sig); | ||
2175 | signal(SIGALRM, catch_sig); | ||
2176 | if(sig) | ||
2177 | longjmp(restart, sig); | ||
2178 | } | ||
2179 | |||
2180 | //----- Come here when we get a core dump signal ----------------- | ||
2181 | static void core_sig(int sig) | ||
2182 | { | ||
2183 | signal(SIGQUIT, core_sig); | ||
2184 | signal(SIGILL, core_sig); | ||
2185 | signal(SIGTRAP, core_sig); | ||
2186 | signal(SIGIOT, core_sig); | ||
2187 | signal(SIGABRT, core_sig); | ||
2188 | signal(SIGFPE, core_sig); | ||
2189 | signal(SIGBUS, core_sig); | ||
2190 | signal(SIGSEGV, core_sig); | ||
2191 | #ifdef SIGSYS | ||
2192 | signal(SIGSYS, core_sig); | ||
2193 | #endif | ||
2194 | |||
2195 | if(sig) { // signaled | ||
2196 | dot = bound_dot(dot); // make sure "dot" is valid | ||
2197 | |||
2198 | longjmp(restart, sig); | ||
2199 | } | ||
2200 | } | ||
2201 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ | ||
2202 | |||
2203 | static int mysleep(int hund) // sleep for 'h' 1/100 seconds | ||
2204 | { | ||
2205 | // Don't hang- Wait 5/100 seconds- 1 Sec= 1000000 | ||
2206 | fflush(stdout); | ||
2207 | FD_ZERO(&rfds); | ||
2208 | FD_SET(0, &rfds); | ||
2209 | tv.tv_sec = 0; | ||
2210 | tv.tv_usec = hund * 10000; | ||
2211 | select(1, &rfds, NULL, NULL, &tv); | ||
2212 | return (FD_ISSET(0, &rfds)); | ||
2213 | } | ||
2214 | |||
2215 | static Byte readbuffer[BUFSIZ]; | ||
2216 | static int readed_for_parse; | ||
2217 | |||
2218 | //----- IO Routines -------------------------------------------- | ||
2219 | static Byte readit(void) // read (maybe cursor) key from stdin | ||
2220 | { | ||
2221 | Byte c; | ||
2222 | int n; | ||
2223 | struct esc_cmds { | ||
2224 | const char *seq; | ||
2225 | Byte val; | ||
2226 | }; | ||
2227 | |||
2228 | static const struct esc_cmds esccmds[] = { | ||
2229 | {"OA", (Byte) VI_K_UP}, // cursor key Up | ||
2230 | {"OB", (Byte) VI_K_DOWN}, // cursor key Down | ||
2231 | {"OC", (Byte) VI_K_RIGHT}, // Cursor Key Right | ||
2232 | {"OD", (Byte) VI_K_LEFT}, // cursor key Left | ||
2233 | {"OH", (Byte) VI_K_HOME}, // Cursor Key Home | ||
2234 | {"OF", (Byte) VI_K_END}, // Cursor Key End | ||
2235 | {"[A", (Byte) VI_K_UP}, // cursor key Up | ||
2236 | {"[B", (Byte) VI_K_DOWN}, // cursor key Down | ||
2237 | {"[C", (Byte) VI_K_RIGHT}, // Cursor Key Right | ||
2238 | {"[D", (Byte) VI_K_LEFT}, // cursor key Left | ||
2239 | {"[H", (Byte) VI_K_HOME}, // Cursor Key Home | ||
2240 | {"[F", (Byte) VI_K_END}, // Cursor Key End | ||
2241 | {"[1~", (Byte) VI_K_HOME}, // Cursor Key Home | ||
2242 | {"[2~", (Byte) VI_K_INSERT}, // Cursor Key Insert | ||
2243 | {"[4~", (Byte) VI_K_END}, // Cursor Key End | ||
2244 | {"[5~", (Byte) VI_K_PAGEUP}, // Cursor Key Page Up | ||
2245 | {"[6~", (Byte) VI_K_PAGEDOWN}, // Cursor Key Page Down | ||
2246 | {"OP", (Byte) VI_K_FUN1}, // Function Key F1 | ||
2247 | {"OQ", (Byte) VI_K_FUN2}, // Function Key F2 | ||
2248 | {"OR", (Byte) VI_K_FUN3}, // Function Key F3 | ||
2249 | {"OS", (Byte) VI_K_FUN4}, // Function Key F4 | ||
2250 | {"[15~", (Byte) VI_K_FUN5}, // Function Key F5 | ||
2251 | {"[17~", (Byte) VI_K_FUN6}, // Function Key F6 | ||
2252 | {"[18~", (Byte) VI_K_FUN7}, // Function Key F7 | ||
2253 | {"[19~", (Byte) VI_K_FUN8}, // Function Key F8 | ||
2254 | {"[20~", (Byte) VI_K_FUN9}, // Function Key F9 | ||
2255 | {"[21~", (Byte) VI_K_FUN10}, // Function Key F10 | ||
2256 | {"[23~", (Byte) VI_K_FUN11}, // Function Key F11 | ||
2257 | {"[24~", (Byte) VI_K_FUN12}, // Function Key F12 | ||
2258 | {"[11~", (Byte) VI_K_FUN1}, // Function Key F1 | ||
2259 | {"[12~", (Byte) VI_K_FUN2}, // Function Key F2 | ||
2260 | {"[13~", (Byte) VI_K_FUN3}, // Function Key F3 | ||
2261 | {"[14~", (Byte) VI_K_FUN4}, // Function Key F4 | ||
2262 | }; | ||
2263 | |||
2264 | #define ESCCMDS_COUNT (sizeof(esccmds)/sizeof(struct esc_cmds)) | ||
2265 | |||
2266 | (void) alarm(0); // turn alarm OFF while we wait for input | ||
2267 | fflush(stdout); | ||
2268 | n = readed_for_parse; | ||
2269 | // get input from User- are there already input chars in Q? | ||
2270 | if (n <= 0) { | ||
2271 | ri0: | ||
2272 | // the Q is empty, wait for a typed char | ||
2273 | n = read(0, readbuffer, BUFSIZ - 1); | ||
2274 | if (n < 0) { | ||
2275 | if (errno == EINTR) | ||
2276 | goto ri0; // interrupted sys call | ||
2277 | if (errno == EBADF) | ||
2278 | editing = 0; | ||
2279 | if (errno == EFAULT) | ||
2280 | editing = 0; | ||
2281 | if (errno == EINVAL) | ||
2282 | editing = 0; | ||
2283 | if (errno == EIO) | ||
2284 | editing = 0; | ||
2285 | errno = 0; | ||
2286 | } | ||
2287 | if(n <= 0) | ||
2288 | return 0; // error | ||
2289 | if (readbuffer[0] == 27) { | ||
2290 | // This is an ESC char. Is this Esc sequence? | ||
2291 | // Could be bare Esc key. See if there are any | ||
2292 | // more chars to read after the ESC. This would | ||
2293 | // be a Function or Cursor Key sequence. | ||
2294 | FD_ZERO(&rfds); | ||
2295 | FD_SET(0, &rfds); | ||
2296 | tv.tv_sec = 0; | ||
2297 | tv.tv_usec = 50000; // Wait 5/100 seconds- 1 Sec=1000000 | ||
2298 | |||
2299 | // keep reading while there are input chars and room in buffer | ||
2300 | while (select(1, &rfds, NULL, NULL, &tv) > 0 && n <= (BUFSIZ - 5)) { | ||
2301 | // read the rest of the ESC string | ||
2302 | int r = read(0, (void *) (readbuffer + n), BUFSIZ - n); | ||
2303 | if (r > 0) { | ||
2304 | n += r; | ||
2305 | } | ||
2306 | } | ||
2307 | } | ||
2308 | readed_for_parse = n; | ||
2309 | } | ||
2310 | c = readbuffer[0]; | ||
2311 | if(c == 27 && n > 1) { | ||
2312 | // Maybe cursor or function key? | ||
2313 | const struct esc_cmds *eindex; | ||
2314 | |||
2315 | for (eindex = esccmds; eindex < &esccmds[ESCCMDS_COUNT]; eindex++) { | ||
2316 | int cnt = strlen(eindex->seq); | ||
2317 | |||
2318 | if(n <= cnt) | ||
2319 | continue; | ||
2320 | if(strncmp(eindex->seq, (char *) readbuffer + 1, cnt)) | ||
2321 | continue; | ||
2322 | // is a Cursor key- put derived value back into Q | ||
2323 | c = eindex->val; | ||
2324 | // for squeeze out the ESC sequence | ||
2325 | n = cnt + 1; | ||
2326 | break; | ||
2327 | } | ||
2328 | if(eindex == &esccmds[ESCCMDS_COUNT]) { | ||
2329 | /* defined ESC sequence not found, set only one ESC */ | ||
2330 | n = 1; | ||
2331 | } | ||
2332 | } else { | ||
2333 | n = 1; | ||
2334 | } | ||
2335 | // remove key sequence from Q | ||
2336 | readed_for_parse -= n; | ||
2337 | memmove(readbuffer, readbuffer + n, BUFSIZ - n); | ||
2338 | (void) alarm(3); // we are done waiting for input, turn alarm ON | ||
2339 | return (c); | ||
2340 | } | ||
2341 | |||
2342 | //----- IO Routines -------------------------------------------- | ||
2343 | static Byte get_one_char() | ||
2344 | { | ||
2345 | static Byte c; | ||
2346 | |||
2347 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
2348 | // ! adding2q && ioq == 0 read() | ||
2349 | // ! adding2q && ioq != 0 *ioq | ||
2350 | // adding2q *last_modifying_cmd= read() | ||
2351 | if (!adding2q) { | ||
2352 | // we are not adding to the q. | ||
2353 | // but, we may be reading from a q | ||
2354 | if (ioq == 0) { | ||
2355 | // there is no current q, read from STDIN | ||
2356 | c = readit(); // get the users input | ||
2357 | } else { | ||
2358 | // there is a queue to get chars from first | ||
2359 | c = *ioq++; | ||
2360 | if (c == '\0') { | ||
2361 | // the end of the q, read from STDIN | ||
2362 | free(ioq_start); | ||
2363 | ioq_start = ioq = 0; | ||
2364 | c = readit(); // get the users input | ||
2365 | } | ||
2366 | } | ||
2367 | } else { | ||
2368 | // adding STDIN chars to q | ||
2369 | c = readit(); // get the users input | ||
2370 | if (last_modifying_cmd != 0) { | ||
2371 | int len = strlen((char *) last_modifying_cmd); | ||
2372 | if (len + 1 >= BUFSIZ) { | ||
2373 | psbs("last_modifying_cmd overrun"); | ||
2374 | } else { | ||
2375 | // add new char to q | ||
2376 | last_modifying_cmd[len] = c; | ||
2377 | } | ||
2378 | } | ||
2379 | } | ||
2380 | #else /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
2381 | c = readit(); // get the users input | ||
2382 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
2383 | return (c); // return the char, where ever it came from | ||
2384 | } | ||
2385 | |||
2386 | static Byte *get_input_line(Byte * prompt) // get input line- use "status line" | ||
2387 | { | ||
2388 | Byte buf[BUFSIZ]; | ||
2389 | Byte c; | ||
2390 | int i; | ||
2391 | static Byte *obufp = NULL; | ||
2392 | |||
2393 | strcpy((char *) buf, (char *) prompt); | ||
2394 | *status_buffer = '\0'; // clear the status buffer | ||
2395 | place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen | ||
2396 | clear_to_eol(); // clear the line | ||
2397 | write1(prompt); // write out the :, /, or ? prompt | ||
2398 | |||
2399 | for (i = strlen((char *) buf); i < BUFSIZ;) { | ||
2400 | c = get_one_char(); // read user input | ||
2401 | if (c == '\n' || c == '\r' || c == 27) | ||
2402 | break; // is this end of input | ||
2403 | if (c == erase_char) { // user wants to erase prev char | ||
2404 | i--; // backup to prev char | ||
2405 | buf[i] = '\0'; // erase the char | ||
2406 | buf[i + 1] = '\0'; // null terminate buffer | ||
2407 | write1("\b \b"); // erase char on screen | ||
2408 | if (i <= 0) { // user backs up before b-o-l, exit | ||
2409 | break; | ||
2410 | } | ||
2411 | } else { | ||
2412 | buf[i] = c; // save char in buffer | ||
2413 | buf[i + 1] = '\0'; // make sure buffer is null terminated | ||
2414 | putchar(c); // echo the char back to user | ||
2415 | i++; | ||
2416 | } | ||
2417 | } | ||
2418 | refresh(FALSE); | ||
2419 | free(obufp); | ||
2420 | obufp = (Byte *) bb_xstrdup((char *) buf); | ||
2421 | return (obufp); | ||
2422 | } | ||
2423 | |||
2424 | static int file_size(const Byte * fn) // what is the byte size of "fn" | ||
2425 | { | ||
2426 | struct stat st_buf; | ||
2427 | int cnt, sr; | ||
2428 | |||
2429 | if (fn == 0 || strlen(fn) <= 0) | ||
2430 | return (-1); | ||
2431 | cnt = -1; | ||
2432 | sr = stat((char *) fn, &st_buf); // see if file exists | ||
2433 | if (sr >= 0) { | ||
2434 | cnt = (int) st_buf.st_size; | ||
2435 | } | ||
2436 | return (cnt); | ||
2437 | } | ||
2438 | |||
2439 | static int file_insert(Byte * fn, Byte * p, int size) | ||
2440 | { | ||
2441 | int fd, cnt; | ||
2442 | |||
2443 | cnt = -1; | ||
2444 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
2445 | readonly = FALSE; | ||
2446 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
2447 | if (fn == 0 || strlen((char*) fn) <= 0) { | ||
2448 | psbs("No filename given"); | ||
2449 | goto fi0; | ||
2450 | } | ||
2451 | if (size == 0) { | ||
2452 | // OK- this is just a no-op | ||
2453 | cnt = 0; | ||
2454 | goto fi0; | ||
2455 | } | ||
2456 | if (size < 0) { | ||
2457 | psbs("Trying to insert a negative number (%d) of characters", size); | ||
2458 | goto fi0; | ||
2459 | } | ||
2460 | if (p < text || p > end) { | ||
2461 | psbs("Trying to insert file outside of memory"); | ||
2462 | goto fi0; | ||
2463 | } | ||
2464 | |||
2465 | // see if we can open the file | ||
2466 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
2467 | if (vi_readonly) goto fi1; // do not try write-mode | ||
2468 | #endif | ||
2469 | fd = open((char *) fn, O_RDWR); // assume read & write | ||
2470 | if (fd < 0) { | ||
2471 | // could not open for writing- maybe file is read only | ||
2472 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
2473 | fi1: | ||
2474 | #endif | ||
2475 | fd = open((char *) fn, O_RDONLY); // try read-only | ||
2476 | if (fd < 0) { | ||
2477 | psbs("\"%s\" %s", fn, "could not open file"); | ||
2478 | goto fi0; | ||
2479 | } | ||
2480 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
2481 | // got the file- read-only | ||
2482 | readonly = TRUE; | ||
2483 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
2484 | } | ||
2485 | p = text_hole_make(p, size); | ||
2486 | cnt = read(fd, p, size); | ||
2487 | close(fd); | ||
2488 | if (cnt < 0) { | ||
2489 | cnt = -1; | ||
2490 | p = text_hole_delete(p, p + size - 1); // un-do buffer insert | ||
2491 | psbs("could not read file \"%s\"", fn); | ||
2492 | } else if (cnt < size) { | ||
2493 | // There was a partial read, shrink unused space text[] | ||
2494 | p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert | ||
2495 | psbs("could not read all of file \"%s\"", fn); | ||
2496 | } | ||
2497 | if (cnt >= size) | ||
2498 | file_modified = TRUE; | ||
2499 | fi0: | ||
2500 | return (cnt); | ||
2501 | } | ||
2502 | |||
2503 | static int file_write(Byte * fn, Byte * first, Byte * last) | ||
2504 | { | ||
2505 | int fd, cnt, charcnt; | ||
2506 | |||
2507 | if (fn == 0) { | ||
2508 | psbs("No current filename"); | ||
2509 | return (-1); | ||
2510 | } | ||
2511 | charcnt = 0; | ||
2512 | // FIXIT- use the correct umask() | ||
2513 | fd = open((char *) fn, (O_WRONLY | O_CREAT | O_TRUNC), 0664); | ||
2514 | if (fd < 0) | ||
2515 | return (-1); | ||
2516 | cnt = last - first + 1; | ||
2517 | charcnt = write(fd, first, cnt); | ||
2518 | if (charcnt == cnt) { | ||
2519 | // good write | ||
2520 | //file_modified= FALSE; // the file has not been modified | ||
2521 | } else { | ||
2522 | charcnt = 0; | ||
2523 | } | ||
2524 | close(fd); | ||
2525 | return (charcnt); | ||
2526 | } | ||
2527 | |||
2528 | //----- Terminal Drawing --------------------------------------- | ||
2529 | // The terminal is made up of 'rows' line of 'columns' columns. | ||
2530 | // classically this would be 24 x 80. | ||
2531 | // screen coordinates | ||
2532 | // 0,0 ... 0,79 | ||
2533 | // 1,0 ... 1,79 | ||
2534 | // . ... . | ||
2535 | // . ... . | ||
2536 | // 22,0 ... 22,79 | ||
2537 | // 23,0 ... 23,79 status line | ||
2538 | // | ||
2539 | |||
2540 | //----- Move the cursor to row x col (count from 0, not 1) ------- | ||
2541 | static void place_cursor(int row, int col, int opti) | ||
2542 | { | ||
2543 | char cm1[BUFSIZ]; | ||
2544 | char *cm; | ||
2545 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR | ||
2546 | char cm2[BUFSIZ]; | ||
2547 | Byte *screenp; | ||
2548 | // char cm3[BUFSIZ]; | ||
2549 | int Rrow= last_row; | ||
2550 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ | ||
2551 | |||
2552 | memset(cm1, '\0', BUFSIZ - 1); // clear the buffer | ||
2553 | |||
2554 | if (row < 0) row = 0; | ||
2555 | if (row >= rows) row = rows - 1; | ||
2556 | if (col < 0) col = 0; | ||
2557 | if (col >= columns) col = columns - 1; | ||
2558 | |||
2559 | //----- 1. Try the standard terminal ESC sequence | ||
2560 | sprintf((char *) cm1, CMrc, row + 1, col + 1); | ||
2561 | cm= cm1; | ||
2562 | if (! opti) goto pc0; | ||
2563 | |||
2564 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR | ||
2565 | //----- find the minimum # of chars to move cursor ------------- | ||
2566 | //----- 2. Try moving with discreet chars (Newline, [back]space, ...) | ||
2567 | memset(cm2, '\0', BUFSIZ - 1); // clear the buffer | ||
2568 | |||
2569 | // move to the correct row | ||
2570 | while (row < Rrow) { | ||
2571 | // the cursor has to move up | ||
2572 | strcat(cm2, CMup); | ||
2573 | Rrow--; | ||
2574 | } | ||
2575 | while (row > Rrow) { | ||
2576 | // the cursor has to move down | ||
2577 | strcat(cm2, CMdown); | ||
2578 | Rrow++; | ||
2579 | } | ||
2580 | |||
2581 | // now move to the correct column | ||
2582 | strcat(cm2, "\r"); // start at col 0 | ||
2583 | // just send out orignal source char to get to correct place | ||
2584 | screenp = &screen[row * columns]; // start of screen line | ||
2585 | strncat(cm2, screenp, col); | ||
2586 | |||
2587 | //----- 3. Try some other way of moving cursor | ||
2588 | //--------------------------------------------- | ||
2589 | |||
2590 | // pick the shortest cursor motion to send out | ||
2591 | cm= cm1; | ||
2592 | if (strlen(cm2) < strlen(cm)) { | ||
2593 | cm= cm2; | ||
2594 | } /* else if (strlen(cm3) < strlen(cm)) { | ||
2595 | cm= cm3; | ||
2596 | } */ | ||
2597 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ | ||
2598 | pc0: | ||
2599 | write1(cm); // move the cursor | ||
2600 | } | ||
2601 | |||
2602 | //----- Erase from cursor to end of line ----------------------- | ||
2603 | static void clear_to_eol() | ||
2604 | { | ||
2605 | write1(Ceol); // Erase from cursor to end of line | ||
2606 | } | ||
2607 | |||
2608 | //----- Erase from cursor to end of screen ----------------------- | ||
2609 | static void clear_to_eos() | ||
2610 | { | ||
2611 | write1(Ceos); // Erase from cursor to end of screen | ||
2612 | } | ||
2613 | |||
2614 | //----- Start standout mode ------------------------------------ | ||
2615 | static void standout_start() // send "start reverse video" sequence | ||
2616 | { | ||
2617 | write1(SOs); // Start reverse video mode | ||
2618 | } | ||
2619 | |||
2620 | //----- End standout mode -------------------------------------- | ||
2621 | static void standout_end() // send "end reverse video" sequence | ||
2622 | { | ||
2623 | write1(SOn); // End reverse video mode | ||
2624 | } | ||
2625 | |||
2626 | //----- Flash the screen -------------------------------------- | ||
2627 | static void flash(int h) | ||
2628 | { | ||
2629 | standout_start(); // send "start reverse video" sequence | ||
2630 | redraw(TRUE); | ||
2631 | (void) mysleep(h); | ||
2632 | standout_end(); // send "end reverse video" sequence | ||
2633 | redraw(TRUE); | ||
2634 | } | ||
2635 | |||
2636 | static void Indicate_Error(void) | ||
2637 | { | ||
2638 | #ifdef CONFIG_FEATURE_VI_CRASHME | ||
2639 | if (crashme > 0) | ||
2640 | return; // generate a random command | ||
2641 | #endif /* CONFIG_FEATURE_VI_CRASHME */ | ||
2642 | if (!err_method) { | ||
2643 | write1(bell); // send out a bell character | ||
2644 | } else { | ||
2645 | flash(10); | ||
2646 | } | ||
2647 | } | ||
2648 | |||
2649 | //----- Screen[] Routines -------------------------------------- | ||
2650 | //----- Erase the Screen[] memory ------------------------------ | ||
2651 | static void screen_erase() | ||
2652 | { | ||
2653 | memset(screen, ' ', screensize); // clear new screen | ||
2654 | } | ||
2655 | |||
2656 | //----- Draw the status line at bottom of the screen ------------- | ||
2657 | static void show_status_line(void) | ||
2658 | { | ||
2659 | static int last_cksum; | ||
2660 | int l, cnt, cksum; | ||
2661 | |||
2662 | edit_status(); | ||
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 | ||
2669 | write1(status_buffer); | ||
2670 | clear_to_eol(); | ||
2671 | place_cursor(crow, ccol, FALSE); // put cursor back in correct place | ||
2672 | } | ||
2673 | fflush(stdout); | ||
2674 | } | ||
2675 | |||
2676 | //----- format the status buffer, the bottom line of screen ------ | ||
2677 | // print status buffer, with STANDOUT mode | ||
2678 | static void psbs(const char *format, ...) | ||
2679 | { | ||
2680 | va_list args; | ||
2681 | |||
2682 | va_start(args, format); | ||
2683 | strcpy((char *) status_buffer, SOs); // Terminal standout mode on | ||
2684 | vsprintf((char *) status_buffer + strlen((char *) status_buffer), format, | ||
2685 | args); | ||
2686 | strcat((char *) status_buffer, SOn); // Terminal standout mode off | ||
2687 | va_end(args); | ||
2688 | |||
2689 | return; | ||
2690 | } | ||
2691 | |||
2692 | // print status buffer | ||
2693 | static void psb(const char *format, ...) | ||
2694 | { | ||
2695 | va_list args; | ||
2696 | |||
2697 | va_start(args, format); | ||
2698 | vsprintf((char *) status_buffer, format, args); | ||
2699 | va_end(args); | ||
2700 | return; | ||
2701 | } | ||
2702 | |||
2703 | static void ni(Byte * s) // display messages | ||
2704 | { | ||
2705 | Byte buf[BUFSIZ]; | ||
2706 | |||
2707 | print_literal(buf, s); | ||
2708 | psbs("\'%s\' is not implemented", buf); | ||
2709 | } | ||
2710 | |||
2711 | static void edit_status(void) // show file status on status line | ||
2712 | { | ||
2713 | int cur, tot, percent; | ||
2714 | |||
2715 | cur = count_lines(text, dot); | ||
2716 | tot = count_lines(text, end - 1); | ||
2717 | // current line percent | ||
2718 | // ------------- ~~ ---------- | ||
2719 | // total lines 100 | ||
2720 | if (tot > 0) { | ||
2721 | percent = (100 * cur) / tot; | ||
2722 | } else { | ||
2723 | cur = tot = 0; | ||
2724 | percent = 100; | ||
2725 | } | ||
2726 | psb("\"%s\"" | ||
2727 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
2728 | "%s" | ||
2729 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
2730 | "%s line %d of %d --%d%%--", | ||
2731 | (cfn != 0 ? (char *) cfn : "No file"), | ||
2732 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
2733 | ((vi_readonly || readonly) ? " [Read only]" : ""), | ||
2734 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
2735 | (file_modified ? " [modified]" : ""), | ||
2736 | cur, tot, percent); | ||
2737 | } | ||
2738 | |||
2739 | //----- Force refresh of all Lines ----------------------------- | ||
2740 | static void redraw(int full_screen) | ||
2741 | { | ||
2742 | place_cursor(0, 0, FALSE); // put cursor in correct place | ||
2743 | clear_to_eos(); // tel terminal to erase display | ||
2744 | screen_erase(); // erase the internal screen buffer | ||
2745 | refresh(full_screen); // this will redraw the entire display | ||
2746 | } | ||
2747 | |||
2748 | //----- Format a text[] line into a buffer --------------------- | ||
2749 | static void format_line(Byte *dest, Byte *src, int li) | ||
2750 | { | ||
2751 | int co; | ||
2752 | Byte c; | ||
2753 | |||
2754 | for (co= 0; co < MAX_SCR_COLS; co++) { | ||
2755 | c= ' '; // assume blank | ||
2756 | if (li > 0 && co == 0) { | ||
2757 | c = '~'; // not first line, assume Tilde | ||
2758 | } | ||
2759 | // are there chars in text[] and have we gone past the end | ||
2760 | if (text < end && src < end) { | ||
2761 | c = *src++; | ||
2762 | } | ||
2763 | if (c == '\n') | ||
2764 | break; | ||
2765 | if (c > 127 && !Isprint(c)) { | ||
2766 | c = '.'; | ||
2767 | } | ||
2768 | if (c < ' ' || c == 127) { | ||
2769 | if (c == '\t') { | ||
2770 | c = ' '; | ||
2771 | // co % 8 != 7 | ||
2772 | for (; (co % tabstop) != (tabstop - 1); co++) { | ||
2773 | dest[co] = c; | ||
2774 | } | ||
2775 | } else { | ||
2776 | dest[co++] = '^'; | ||
2777 | if(c == 127) | ||
2778 | c = '?'; | ||
2779 | else | ||
2780 | c += '@'; // make it visible | ||
2781 | } | ||
2782 | } | ||
2783 | // the co++ is done here so that the column will | ||
2784 | // not be overwritten when we blank-out the rest of line | ||
2785 | dest[co] = c; | ||
2786 | if (src >= end) | ||
2787 | break; | ||
2788 | } | ||
2789 | } | ||
2790 | |||
2791 | //----- Refresh the changed screen lines ----------------------- | ||
2792 | // Copy the source line from text[] into the buffer and note | ||
2793 | // if the current screenline is different from the new buffer. | ||
2794 | // If they differ then that line needs redrawing on the terminal. | ||
2795 | // | ||
2796 | static void refresh(int full_screen) | ||
2797 | { | ||
2798 | static int old_offset; | ||
2799 | int li, changed; | ||
2800 | Byte buf[MAX_SCR_COLS]; | ||
2801 | Byte *tp, *sp; // pointer into text[] and screen[] | ||
2802 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR | ||
2803 | int last_li= -2; // last line that changed- for optimizing cursor movement | ||
2804 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ | ||
2805 | |||
2806 | #ifdef CONFIG_FEATURE_VI_WIN_RESIZE | ||
2807 | window_size_get(0); | ||
2808 | #endif /* CONFIG_FEATURE_VI_WIN_RESIZE */ | ||
2809 | sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot") | ||
2810 | tp = screenbegin; // index into text[] of top line | ||
2811 | |||
2812 | // compare text[] to screen[] and mark screen[] lines that need updating | ||
2813 | for (li = 0; li < rows - 1; li++) { | ||
2814 | int cs, ce; // column start & end | ||
2815 | memset(buf, ' ', MAX_SCR_COLS); // blank-out the buffer | ||
2816 | buf[MAX_SCR_COLS-1] = 0; // NULL terminate the buffer | ||
2817 | // format current text line into buf | ||
2818 | format_line(buf, tp, li); | ||
2819 | |||
2820 | // skip to the end of the current text[] line | ||
2821 | while (tp < end && *tp++ != '\n') /*no-op*/ ; | ||
2822 | |||
2823 | // see if there are any changes between vitual screen and buf | ||
2824 | changed = FALSE; // assume no change | ||
2825 | cs= 0; | ||
2826 | ce= columns-1; | ||
2827 | sp = &screen[li * columns]; // start of screen line | ||
2828 | if (full_screen) { | ||
2829 | // force re-draw of every single column from 0 - columns-1 | ||
2830 | goto re0; | ||
2831 | } | ||
2832 | // compare newly formatted buffer with virtual screen | ||
2833 | // look forward for first difference between buf and screen | ||
2834 | for ( ; cs <= ce; cs++) { | ||
2835 | if (buf[cs + offset] != sp[cs]) { | ||
2836 | changed = TRUE; // mark for redraw | ||
2837 | break; | ||
2838 | } | ||
2839 | } | ||
2840 | |||
2841 | // look backward for last difference between buf and screen | ||
2842 | for ( ; ce >= cs; ce--) { | ||
2843 | if (buf[ce + offset] != sp[ce]) { | ||
2844 | changed = TRUE; // mark for redraw | ||
2845 | break; | ||
2846 | } | ||
2847 | } | ||
2848 | // now, cs is index of first diff, and ce is index of last diff | ||
2849 | |||
2850 | // if horz offset has changed, force a redraw | ||
2851 | if (offset != old_offset) { | ||
2852 | re0: | ||
2853 | changed = TRUE; | ||
2854 | } | ||
2855 | |||
2856 | // make a sanity check of columns indexes | ||
2857 | if (cs < 0) cs= 0; | ||
2858 | if (ce > columns-1) ce= columns-1; | ||
2859 | if (cs > ce) { cs= 0; ce= columns-1; } | ||
2860 | // is there a change between vitual screen and buf | ||
2861 | if (changed) { | ||
2862 | // copy changed part of buffer to virtual screen | ||
2863 | memmove(sp+cs, buf+(cs+offset), ce-cs+1); | ||
2864 | |||
2865 | // move cursor to column of first change | ||
2866 | if (offset != old_offset) { | ||
2867 | // opti_cur_move is still too stupid | ||
2868 | // to handle offsets correctly | ||
2869 | place_cursor(li, cs, FALSE); | ||
2870 | } else { | ||
2871 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR | ||
2872 | // if this just the next line | ||
2873 | // try to optimize cursor movement | ||
2874 | // otherwise, use standard ESC sequence | ||
2875 | place_cursor(li, cs, li == (last_li+1) ? TRUE : FALSE); | ||
2876 | last_li= li; | ||
2877 | #else /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ | ||
2878 | place_cursor(li, cs, FALSE); // use standard ESC sequence | ||
2879 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ | ||
2880 | } | ||
2881 | |||
2882 | // write line out to terminal | ||
2883 | { | ||
2884 | int nic = ce-cs+1; | ||
2885 | char *out = sp+cs; | ||
2886 | |||
2887 | while(nic-- > 0) { | ||
2888 | putchar(*out); | ||
2889 | out++; | ||
2890 | } | ||
2891 | } | ||
2892 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR | ||
2893 | last_row = li; | ||
2894 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ | ||
2895 | } | ||
2896 | } | ||
2897 | |||
2898 | #ifdef CONFIG_FEATURE_VI_OPTIMIZE_CURSOR | ||
2899 | place_cursor(crow, ccol, (crow == last_row) ? TRUE : FALSE); | ||
2900 | last_row = crow; | ||
2901 | #else | ||
2902 | place_cursor(crow, ccol, FALSE); | ||
2903 | #endif /* CONFIG_FEATURE_VI_OPTIMIZE_CURSOR */ | ||
2904 | |||
2905 | if (offset != old_offset) | ||
2906 | old_offset = offset; | ||
2907 | } | ||
2908 | |||
2909 | //--------------------------------------------------------------------- | ||
2910 | //----- the Ascii Chart ----------------------------------------------- | ||
2911 | // | ||
2912 | // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel | ||
2913 | // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si | ||
2914 | // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb | ||
2915 | // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us | ||
2916 | // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 ' | ||
2917 | // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f / | ||
2918 | // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7 | ||
2919 | // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ? | ||
2920 | // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G | ||
2921 | // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O | ||
2922 | // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W | ||
2923 | // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _ | ||
2924 | // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g | ||
2925 | // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o | ||
2926 | // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w | ||
2927 | // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del | ||
2928 | //--------------------------------------------------------------------- | ||
2929 | |||
2930 | //----- Execute a Vi Command ----------------------------------- | ||
2931 | static void do_cmd(Byte c) | ||
2932 | { | ||
2933 | Byte c1, *p, *q, *msg, buf[9], *save_dot; | ||
2934 | int cnt, i, j, dir, yf; | ||
2935 | |||
2936 | c1 = c; // quiet the compiler | ||
2937 | cnt = yf = dir = 0; // quiet the compiler | ||
2938 | p = q = save_dot = msg = buf; // quiet the compiler | ||
2939 | memset(buf, '\0', 9); // clear buf | ||
2940 | |||
2941 | /* if this is a cursor key, skip these checks */ | ||
2942 | switch (c) { | ||
2943 | case VI_K_UP: | ||
2944 | case VI_K_DOWN: | ||
2945 | case VI_K_LEFT: | ||
2946 | case VI_K_RIGHT: | ||
2947 | case VI_K_HOME: | ||
2948 | case VI_K_END: | ||
2949 | case VI_K_PAGEUP: | ||
2950 | case VI_K_PAGEDOWN: | ||
2951 | goto key_cmd_mode; | ||
2952 | } | ||
2953 | |||
2954 | if (cmd_mode == 2) { | ||
2955 | // flip-flop Insert/Replace mode | ||
2956 | if (c == VI_K_INSERT) goto dc_i; | ||
2957 | // we are 'R'eplacing the current *dot with new char | ||
2958 | if (*dot == '\n') { | ||
2959 | // don't Replace past E-o-l | ||
2960 | cmd_mode = 1; // convert to insert | ||
2961 | } else { | ||
2962 | if (1 <= c || Isprint(c)) { | ||
2963 | if (c != 27) | ||
2964 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char | ||
2965 | dot = char_insert(dot, c); // insert new char | ||
2966 | } | ||
2967 | goto dc1; | ||
2968 | } | ||
2969 | } | ||
2970 | if (cmd_mode == 1) { | ||
2971 | // hitting "Insert" twice means "R" replace mode | ||
2972 | if (c == VI_K_INSERT) goto dc5; | ||
2973 | // insert the char c at "dot" | ||
2974 | if (1 <= c || Isprint(c)) { | ||
2975 | dot = char_insert(dot, c); | ||
2976 | } | ||
2977 | goto dc1; | ||
2978 | } | ||
2979 | |||
2980 | key_cmd_mode: | ||
2981 | switch (c) { | ||
2982 | //case 0x01: // soh | ||
2983 | //case 0x09: // ht | ||
2984 | //case 0x0b: // vt | ||
2985 | //case 0x0e: // so | ||
2986 | //case 0x0f: // si | ||
2987 | //case 0x10: // dle | ||
2988 | //case 0x11: // dc1 | ||
2989 | //case 0x13: // dc3 | ||
2990 | #ifdef CONFIG_FEATURE_VI_CRASHME | ||
2991 | case 0x14: // dc4 ctrl-T | ||
2992 | crashme = (crashme == 0) ? 1 : 0; | ||
2993 | break; | ||
2994 | #endif /* CONFIG_FEATURE_VI_CRASHME */ | ||
2995 | //case 0x16: // syn | ||
2996 | //case 0x17: // etb | ||
2997 | //case 0x18: // can | ||
2998 | //case 0x1c: // fs | ||
2999 | //case 0x1d: // gs | ||
3000 | //case 0x1e: // rs | ||
3001 | //case 0x1f: // us | ||
3002 | //case '!': // !- | ||
3003 | //case '#': // #- | ||
3004 | //case '&': // &- | ||
3005 | //case '(': // (- | ||
3006 | //case ')': // )- | ||
3007 | //case '*': // *- | ||
3008 | //case ',': // ,- | ||
3009 | //case '=': // =- | ||
3010 | //case '@': // @- | ||
3011 | //case 'F': // F- | ||
3012 | //case 'K': // K- | ||
3013 | //case 'Q': // Q- | ||
3014 | //case 'S': // S- | ||
3015 | //case 'T': // T- | ||
3016 | //case 'V': // V- | ||
3017 | //case '[': // [- | ||
3018 | //case '\\': // \- | ||
3019 | //case ']': // ]- | ||
3020 | //case '_': // _- | ||
3021 | //case '`': // `- | ||
3022 | //case 'g': // g- | ||
3023 | //case 'u': // u- FIXME- there is no undo | ||
3024 | //case 'v': // v- | ||
3025 | default: // unrecognised command | ||
3026 | buf[0] = c; | ||
3027 | buf[1] = '\0'; | ||
3028 | if (c < ' ') { | ||
3029 | buf[0] = '^'; | ||
3030 | buf[1] = c + '@'; | ||
3031 | buf[2] = '\0'; | ||
3032 | } | ||
3033 | ni((Byte *) buf); | ||
3034 | end_cmd_q(); // stop adding to q | ||
3035 | case 0x00: // nul- ignore | ||
3036 | break; | ||
3037 | case 2: // ctrl-B scroll up full screen | ||
3038 | case VI_K_PAGEUP: // Cursor Key Page Up | ||
3039 | dot_scroll(rows - 2, -1); | ||
3040 | break; | ||
3041 | #ifdef CONFIG_FEATURE_VI_USE_SIGNALS | ||
3042 | case 0x03: // ctrl-C interrupt | ||
3043 | longjmp(restart, 1); | ||
3044 | break; | ||
3045 | case 26: // ctrl-Z suspend | ||
3046 | suspend_sig(SIGTSTP); | ||
3047 | break; | ||
3048 | #endif /* CONFIG_FEATURE_VI_USE_SIGNALS */ | ||
3049 | case 4: // ctrl-D scroll down half screen | ||
3050 | dot_scroll((rows - 2) / 2, 1); | ||
3051 | break; | ||
3052 | case 5: // ctrl-E scroll down one line | ||
3053 | dot_scroll(1, 1); | ||
3054 | break; | ||
3055 | case 6: // ctrl-F scroll down full screen | ||
3056 | case VI_K_PAGEDOWN: // Cursor Key Page Down | ||
3057 | dot_scroll(rows - 2, 1); | ||
3058 | break; | ||
3059 | case 7: // ctrl-G show current status | ||
3060 | edit_status(); | ||
3061 | break; | ||
3062 | case 'h': // h- move left | ||
3063 | case VI_K_LEFT: // cursor key Left | ||
3064 | case 8: // ctrl-H- move left (This may be ERASE char) | ||
3065 | case 127: // DEL- move left (This may be ERASE char) | ||
3066 | if (cmdcnt-- > 1) { | ||
3067 | do_cmd(c); | ||
3068 | } // repeat cnt | ||
3069 | dot_left(); | ||
3070 | break; | ||
3071 | case 10: // Newline ^J | ||
3072 | case 'j': // j- goto next line, same col | ||
3073 | case VI_K_DOWN: // cursor key Down | ||
3074 | if (cmdcnt-- > 1) { | ||
3075 | do_cmd(c); | ||
3076 | } // repeat cnt | ||
3077 | dot_next(); // go to next B-o-l | ||
3078 | dot = move_to_col(dot, ccol + offset); // try stay in same col | ||
3079 | break; | ||
3080 | case 12: // ctrl-L force redraw whole screen | ||
3081 | case 18: // ctrl-R force redraw | ||
3082 | place_cursor(0, 0, FALSE); // put cursor in correct place | ||
3083 | clear_to_eos(); // tel terminal to erase display | ||
3084 | (void) mysleep(10); | ||
3085 | screen_erase(); // erase the internal screen buffer | ||
3086 | refresh(TRUE); // this will redraw the entire display | ||
3087 | break; | ||
3088 | case 13: // Carriage Return ^M | ||
3089 | case '+': // +- goto next line | ||
3090 | if (cmdcnt-- > 1) { | ||
3091 | do_cmd(c); | ||
3092 | } // repeat cnt | ||
3093 | dot_next(); | ||
3094 | dot_skip_over_ws(); | ||
3095 | break; | ||
3096 | case 21: // ctrl-U scroll up half screen | ||
3097 | dot_scroll((rows - 2) / 2, -1); | ||
3098 | break; | ||
3099 | case 25: // ctrl-Y scroll up one line | ||
3100 | dot_scroll(1, -1); | ||
3101 | break; | ||
3102 | case 27: // esc | ||
3103 | if (cmd_mode == 0) | ||
3104 | indicate_error(c); | ||
3105 | cmd_mode = 0; // stop insrting | ||
3106 | end_cmd_q(); | ||
3107 | *status_buffer = '\0'; // clear status buffer | ||
3108 | break; | ||
3109 | case ' ': // move right | ||
3110 | case 'l': // move right | ||
3111 | case VI_K_RIGHT: // Cursor Key Right | ||
3112 | if (cmdcnt-- > 1) { | ||
3113 | do_cmd(c); | ||
3114 | } // repeat cnt | ||
3115 | dot_right(); | ||
3116 | break; | ||
3117 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
3118 | case '"': // "- name a register to use for Delete/Yank | ||
3119 | c1 = get_one_char(); | ||
3120 | c1 = tolower(c1); | ||
3121 | if (islower(c1)) { | ||
3122 | YDreg = c1 - 'a'; | ||
3123 | } else { | ||
3124 | indicate_error(c); | ||
3125 | } | ||
3126 | break; | ||
3127 | case '\'': // '- goto a specific mark | ||
3128 | c1 = get_one_char(); | ||
3129 | c1 = tolower(c1); | ||
3130 | if (islower(c1)) { | ||
3131 | c1 = c1 - 'a'; | ||
3132 | // get the b-o-l | ||
3133 | q = mark[(int) c1]; | ||
3134 | if (text <= q && q < end) { | ||
3135 | dot = q; | ||
3136 | dot_begin(); // go to B-o-l | ||
3137 | dot_skip_over_ws(); | ||
3138 | } | ||
3139 | } else if (c1 == '\'') { // goto previous context | ||
3140 | dot = swap_context(dot); // swap current and previous context | ||
3141 | dot_begin(); // go to B-o-l | ||
3142 | dot_skip_over_ws(); | ||
3143 | } else { | ||
3144 | indicate_error(c); | ||
3145 | } | ||
3146 | break; | ||
3147 | case 'm': // m- Mark a line | ||
3148 | // this is really stupid. If there are any inserts or deletes | ||
3149 | // between text[0] and dot then this mark will not point to the | ||
3150 | // correct location! It could be off by many lines! | ||
3151 | // Well..., at least its quick and dirty. | ||
3152 | c1 = get_one_char(); | ||
3153 | c1 = tolower(c1); | ||
3154 | if (islower(c1)) { | ||
3155 | c1 = c1 - 'a'; | ||
3156 | // remember the line | ||
3157 | mark[(int) c1] = dot; | ||
3158 | } else { | ||
3159 | indicate_error(c); | ||
3160 | } | ||
3161 | break; | ||
3162 | case 'P': // P- Put register before | ||
3163 | case 'p': // p- put register after | ||
3164 | p = reg[YDreg]; | ||
3165 | if (p == 0) { | ||
3166 | psbs("Nothing in register %c", what_reg()); | ||
3167 | break; | ||
3168 | } | ||
3169 | // are we putting whole lines or strings | ||
3170 | if (strchr((char *) p, '\n') != NULL) { | ||
3171 | if (c == 'P') { | ||
3172 | dot_begin(); // putting lines- Put above | ||
3173 | } | ||
3174 | if (c == 'p') { | ||
3175 | // are we putting after very last line? | ||
3176 | if (end_line(dot) == (end - 1)) { | ||
3177 | dot = end; // force dot to end of text[] | ||
3178 | } else { | ||
3179 | dot_next(); // next line, then put before | ||
3180 | } | ||
3181 | } | ||
3182 | } else { | ||
3183 | if (c == 'p') | ||
3184 | dot_right(); // move to right, can move to NL | ||
3185 | } | ||
3186 | dot = string_insert(dot, p); // insert the string | ||
3187 | end_cmd_q(); // stop adding to q | ||
3188 | break; | ||
3189 | case 'U': // U- Undo; replace current line with original version | ||
3190 | if (reg[Ureg] != 0) { | ||
3191 | p = begin_line(dot); | ||
3192 | q = end_line(dot); | ||
3193 | p = text_hole_delete(p, q); // delete cur line | ||
3194 | p = string_insert(p, reg[Ureg]); // insert orig line | ||
3195 | dot = p; | ||
3196 | dot_skip_over_ws(); | ||
3197 | } | ||
3198 | break; | ||
3199 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
3200 | case '$': // $- goto end of line | ||
3201 | case VI_K_END: // Cursor Key End | ||
3202 | if (cmdcnt-- > 1) { | ||
3203 | do_cmd(c); | ||
3204 | } // repeat cnt | ||
3205 | dot = end_line(dot); | ||
3206 | break; | ||
3207 | case '%': // %- find matching char of pair () [] {} | ||
3208 | for (q = dot; q < end && *q != '\n'; q++) { | ||
3209 | if (strchr("()[]{}", *q) != NULL) { | ||
3210 | // we found half of a pair | ||
3211 | p = find_pair(q, *q); | ||
3212 | if (p == NULL) { | ||
3213 | indicate_error(c); | ||
3214 | } else { | ||
3215 | dot = p; | ||
3216 | } | ||
3217 | break; | ||
3218 | } | ||
3219 | } | ||
3220 | if (*q == '\n') | ||
3221 | indicate_error(c); | ||
3222 | break; | ||
3223 | case 'f': // f- forward to a user specified char | ||
3224 | last_forward_char = get_one_char(); // get the search char | ||
3225 | // | ||
3226 | // dont separate these two commands. 'f' depends on ';' | ||
3227 | // | ||
3228 | //**** fall thru to ... 'i' | ||
3229 | case ';': // ;- look at rest of line for last forward char | ||
3230 | if (cmdcnt-- > 1) { | ||
3231 | do_cmd(';'); | ||
3232 | } // repeat cnt | ||
3233 | if (last_forward_char == 0) break; | ||
3234 | q = dot + 1; | ||
3235 | while (q < end - 1 && *q != '\n' && *q != last_forward_char) { | ||
3236 | q++; | ||
3237 | } | ||
3238 | if (*q == last_forward_char) | ||
3239 | dot = q; | ||
3240 | break; | ||
3241 | case '-': // -- goto prev line | ||
3242 | if (cmdcnt-- > 1) { | ||
3243 | do_cmd(c); | ||
3244 | } // repeat cnt | ||
3245 | dot_prev(); | ||
3246 | dot_skip_over_ws(); | ||
3247 | break; | ||
3248 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
3249 | case '.': // .- repeat the last modifying command | ||
3250 | // Stuff the last_modifying_cmd back into stdin | ||
3251 | // and let it be re-executed. | ||
3252 | if (last_modifying_cmd != 0) { | ||
3253 | ioq = ioq_start = (Byte *) bb_xstrdup((char *) last_modifying_cmd); | ||
3254 | } | ||
3255 | break; | ||
3256 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
3257 | #ifdef CONFIG_FEATURE_VI_SEARCH | ||
3258 | case '?': // /- search for a pattern | ||
3259 | case '/': // /- search for a pattern | ||
3260 | buf[0] = c; | ||
3261 | buf[1] = '\0'; | ||
3262 | q = get_input_line(buf); // get input line- use "status line" | ||
3263 | if (strlen((char *) q) == 1) | ||
3264 | goto dc3; // if no pat re-use old pat | ||
3265 | if (strlen((char *) q) > 1) { // new pat- save it and find | ||
3266 | // there is a new pat | ||
3267 | free(last_search_pattern); | ||
3268 | last_search_pattern = (Byte *) bb_xstrdup((char *) q); | ||
3269 | goto dc3; // now find the pattern | ||
3270 | } | ||
3271 | // user changed mind and erased the "/"- do nothing | ||
3272 | break; | ||
3273 | case 'N': // N- backward search for last pattern | ||
3274 | if (cmdcnt-- > 1) { | ||
3275 | do_cmd(c); | ||
3276 | } // repeat cnt | ||
3277 | dir = BACK; // assume BACKWARD search | ||
3278 | p = dot - 1; | ||
3279 | if (last_search_pattern[0] == '?') { | ||
3280 | dir = FORWARD; | ||
3281 | p = dot + 1; | ||
3282 | } | ||
3283 | goto dc4; // now search for pattern | ||
3284 | break; | ||
3285 | case 'n': // n- repeat search for last pattern | ||
3286 | // search rest of text[] starting at next char | ||
3287 | // if search fails return orignal "p" not the "p+1" address | ||
3288 | if (cmdcnt-- > 1) { | ||
3289 | do_cmd(c); | ||
3290 | } // repeat cnt | ||
3291 | dc3: | ||
3292 | if (last_search_pattern == 0) { | ||
3293 | msg = (Byte *) "No previous regular expression"; | ||
3294 | goto dc2; | ||
3295 | } | ||
3296 | if (last_search_pattern[0] == '/') { | ||
3297 | dir = FORWARD; // assume FORWARD search | ||
3298 | p = dot + 1; | ||
3299 | } | ||
3300 | if (last_search_pattern[0] == '?') { | ||
3301 | dir = BACK; | ||
3302 | p = dot - 1; | ||
3303 | } | ||
3304 | dc4: | ||
3305 | q = char_search(p, last_search_pattern + 1, dir, FULL); | ||
3306 | if (q != NULL) { | ||
3307 | dot = q; // good search, update "dot" | ||
3308 | msg = (Byte *) ""; | ||
3309 | goto dc2; | ||
3310 | } | ||
3311 | // no pattern found between "dot" and "end"- continue at top | ||
3312 | p = text; | ||
3313 | if (dir == BACK) { | ||
3314 | p = end - 1; | ||
3315 | } | ||
3316 | q = char_search(p, last_search_pattern + 1, dir, FULL); | ||
3317 | if (q != NULL) { // found something | ||
3318 | dot = q; // found new pattern- goto it | ||
3319 | msg = (Byte *) "search hit BOTTOM, continuing at TOP"; | ||
3320 | if (dir == BACK) { | ||
3321 | msg = (Byte *) "search hit TOP, continuing at BOTTOM"; | ||
3322 | } | ||
3323 | } else { | ||
3324 | msg = (Byte *) "Pattern not found"; | ||
3325 | } | ||
3326 | dc2: | ||
3327 | psbs("%s", msg); | ||
3328 | break; | ||
3329 | case '{': // {- move backward paragraph | ||
3330 | q = char_search(dot, (Byte *) "\n\n", BACK, FULL); | ||
3331 | if (q != NULL) { // found blank line | ||
3332 | dot = next_line(q); // move to next blank line | ||
3333 | } | ||
3334 | break; | ||
3335 | case '}': // }- move forward paragraph | ||
3336 | q = char_search(dot, (Byte *) "\n\n", FORWARD, FULL); | ||
3337 | if (q != NULL) { // found blank line | ||
3338 | dot = next_line(q); // move to next blank line | ||
3339 | } | ||
3340 | break; | ||
3341 | #endif /* CONFIG_FEATURE_VI_SEARCH */ | ||
3342 | case '0': // 0- goto begining of line | ||
3343 | case '1': // 1- | ||
3344 | case '2': // 2- | ||
3345 | case '3': // 3- | ||
3346 | case '4': // 4- | ||
3347 | case '5': // 5- | ||
3348 | case '6': // 6- | ||
3349 | case '7': // 7- | ||
3350 | case '8': // 8- | ||
3351 | case '9': // 9- | ||
3352 | if (c == '0' && cmdcnt < 1) { | ||
3353 | dot_begin(); // this was a standalone zero | ||
3354 | } else { | ||
3355 | cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number | ||
3356 | } | ||
3357 | break; | ||
3358 | case ':': // :- the colon mode commands | ||
3359 | p = get_input_line((Byte *) ":"); // get input line- use "status line" | ||
3360 | #ifdef CONFIG_FEATURE_VI_COLON | ||
3361 | colon(p); // execute the command | ||
3362 | #else /* CONFIG_FEATURE_VI_COLON */ | ||
3363 | if (*p == ':') | ||
3364 | p++; // move past the ':' | ||
3365 | cnt = strlen((char *) p); | ||
3366 | if (cnt <= 0) | ||
3367 | break; | ||
3368 | if (strncasecmp((char *) p, "quit", cnt) == 0 || | ||
3369 | strncasecmp((char *) p, "q!", cnt) == 0) { // delete lines | ||
3370 | if (file_modified && p[1] != '!') { | ||
3371 | psbs("No write since last change (:quit! overrides)"); | ||
3372 | } else { | ||
3373 | editing = 0; | ||
3374 | } | ||
3375 | } else if (strncasecmp((char *) p, "write", cnt) == 0 || | ||
3376 | strncasecmp((char *) p, "wq", cnt) == 0 || | ||
3377 | strncasecmp((char *) p, "x", cnt) == 0) { | ||
3378 | cnt = file_write(cfn, text, end - 1); | ||
3379 | file_modified = FALSE; | ||
3380 | psb("\"%s\" %dL, %dC", cfn, count_lines(text, end - 1), cnt); | ||
3381 | if (p[0] == 'x' || p[1] == 'q') { | ||
3382 | editing = 0; | ||
3383 | } | ||
3384 | } else if (strncasecmp((char *) p, "file", cnt) == 0 ) { | ||
3385 | edit_status(); // show current file status | ||
3386 | } else if (sscanf((char *) p, "%d", &j) > 0) { | ||
3387 | dot = find_line(j); // go to line # j | ||
3388 | dot_skip_over_ws(); | ||
3389 | } else { // unrecognised cmd | ||
3390 | ni((Byte *) p); | ||
3391 | } | ||
3392 | #endif /* CONFIG_FEATURE_VI_COLON */ | ||
3393 | break; | ||
3394 | case '<': // <- Left shift something | ||
3395 | case '>': // >- Right shift something | ||
3396 | cnt = count_lines(text, dot); // remember what line we are on | ||
3397 | c1 = get_one_char(); // get the type of thing to delete | ||
3398 | find_range(&p, &q, c1); | ||
3399 | (void) yank_delete(p, q, 1, YANKONLY); // save copy before change | ||
3400 | p = begin_line(p); | ||
3401 | q = end_line(q); | ||
3402 | i = count_lines(p, q); // # of lines we are shifting | ||
3403 | for ( ; i > 0; i--, p = next_line(p)) { | ||
3404 | if (c == '<') { | ||
3405 | // shift left- remove tab or 8 spaces | ||
3406 | if (*p == '\t') { | ||
3407 | // shrink buffer 1 char | ||
3408 | (void) text_hole_delete(p, p); | ||
3409 | } else if (*p == ' ') { | ||
3410 | // we should be calculating columns, not just SPACE | ||
3411 | for (j = 0; *p == ' ' && j < tabstop; j++) { | ||
3412 | (void) text_hole_delete(p, p); | ||
3413 | } | ||
3414 | } | ||
3415 | } else if (c == '>') { | ||
3416 | // shift right -- add tab or 8 spaces | ||
3417 | (void) char_insert(p, '\t'); | ||
3418 | } | ||
3419 | } | ||
3420 | dot = find_line(cnt); // what line were we on | ||
3421 | dot_skip_over_ws(); | ||
3422 | end_cmd_q(); // stop adding to q | ||
3423 | break; | ||
3424 | case 'A': // A- append at e-o-l | ||
3425 | dot_end(); // go to e-o-l | ||
3426 | //**** fall thru to ... 'a' | ||
3427 | case 'a': // a- append after current char | ||
3428 | if (*dot != '\n') | ||
3429 | dot++; | ||
3430 | goto dc_i; | ||
3431 | break; | ||
3432 | case 'B': // B- back a blank-delimited Word | ||
3433 | case 'E': // E- end of a blank-delimited word | ||
3434 | case 'W': // W- forward a blank-delimited word | ||
3435 | if (cmdcnt-- > 1) { | ||
3436 | do_cmd(c); | ||
3437 | } // repeat cnt | ||
3438 | dir = FORWARD; | ||
3439 | if (c == 'B') | ||
3440 | dir = BACK; | ||
3441 | if (c == 'W' || isspace(dot[dir])) { | ||
3442 | dot = skip_thing(dot, 1, dir, S_TO_WS); | ||
3443 | dot = skip_thing(dot, 2, dir, S_OVER_WS); | ||
3444 | } | ||
3445 | if (c != 'W') | ||
3446 | dot = skip_thing(dot, 1, dir, S_BEFORE_WS); | ||
3447 | break; | ||
3448 | case 'C': // C- Change to e-o-l | ||
3449 | case 'D': // D- delete to e-o-l | ||
3450 | save_dot = dot; | ||
3451 | dot = dollar_line(dot); // move to before NL | ||
3452 | // copy text into a register and delete | ||
3453 | dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l | ||
3454 | if (c == 'C') | ||
3455 | goto dc_i; // start inserting | ||
3456 | #ifdef CONFIG_FEATURE_VI_DOT_CMD | ||
3457 | if (c == 'D') | ||
3458 | end_cmd_q(); // stop adding to q | ||
3459 | #endif /* CONFIG_FEATURE_VI_DOT_CMD */ | ||
3460 | break; | ||
3461 | case 'G': // G- goto to a line number (default= E-O-F) | ||
3462 | dot = end - 1; // assume E-O-F | ||
3463 | if (cmdcnt > 0) { | ||
3464 | dot = find_line(cmdcnt); // what line is #cmdcnt | ||
3465 | } | ||
3466 | dot_skip_over_ws(); | ||
3467 | break; | ||
3468 | case 'H': // H- goto top line on screen | ||
3469 | dot = screenbegin; | ||
3470 | if (cmdcnt > (rows - 1)) { | ||
3471 | cmdcnt = (rows - 1); | ||
3472 | } | ||
3473 | if (cmdcnt-- > 1) { | ||
3474 | do_cmd('+'); | ||
3475 | } // repeat cnt | ||
3476 | dot_skip_over_ws(); | ||
3477 | break; | ||
3478 | case 'I': // I- insert before first non-blank | ||
3479 | dot_begin(); // 0 | ||
3480 | dot_skip_over_ws(); | ||
3481 | //**** fall thru to ... 'i' | ||
3482 | case 'i': // i- insert before current char | ||
3483 | case VI_K_INSERT: // Cursor Key Insert | ||
3484 | dc_i: | ||
3485 | cmd_mode = 1; // start insrting | ||
3486 | psb("-- Insert --"); | ||
3487 | break; | ||
3488 | case 'J': // J- join current and next lines together | ||
3489 | if (cmdcnt-- > 2) { | ||
3490 | do_cmd(c); | ||
3491 | } // repeat cnt | ||
3492 | dot_end(); // move to NL | ||
3493 | if (dot < end - 1) { // make sure not last char in text[] | ||
3494 | *dot++ = ' '; // replace NL with space | ||
3495 | while (isblnk(*dot)) { // delete leading WS | ||
3496 | dot_delete(); | ||
3497 | } | ||
3498 | } | ||
3499 | end_cmd_q(); // stop adding to q | ||
3500 | break; | ||
3501 | case 'L': // L- goto bottom line on screen | ||
3502 | dot = end_screen(); | ||
3503 | if (cmdcnt > (rows - 1)) { | ||
3504 | cmdcnt = (rows - 1); | ||
3505 | } | ||
3506 | if (cmdcnt-- > 1) { | ||
3507 | do_cmd('-'); | ||
3508 | } // repeat cnt | ||
3509 | dot_begin(); | ||
3510 | dot_skip_over_ws(); | ||
3511 | break; | ||
3512 | case 'M': // M- goto middle line on screen | ||
3513 | dot = screenbegin; | ||
3514 | for (cnt = 0; cnt < (rows-1) / 2; cnt++) | ||
3515 | dot = next_line(dot); | ||
3516 | break; | ||
3517 | case 'O': // O- open a empty line above | ||
3518 | // 0i\n ESC -i | ||
3519 | p = begin_line(dot); | ||
3520 | if (p[-1] == '\n') { | ||
3521 | dot_prev(); | ||
3522 | case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..." | ||
3523 | dot_end(); | ||
3524 | dot = char_insert(dot, '\n'); | ||
3525 | } else { | ||
3526 | dot_begin(); // 0 | ||
3527 | dot = char_insert(dot, '\n'); // i\n ESC | ||
3528 | dot_prev(); // - | ||
3529 | } | ||
3530 | goto dc_i; | ||
3531 | break; | ||
3532 | case 'R': // R- continuous Replace char | ||
3533 | dc5: | ||
3534 | cmd_mode = 2; | ||
3535 | psb("-- Replace --"); | ||
3536 | break; | ||
3537 | case 'X': // X- delete char before dot | ||
3538 | case 'x': // x- delete the current char | ||
3539 | case 's': // s- substitute the current char | ||
3540 | if (cmdcnt-- > 1) { | ||
3541 | do_cmd(c); | ||
3542 | } // repeat cnt | ||
3543 | dir = 0; | ||
3544 | if (c == 'X') | ||
3545 | dir = -1; | ||
3546 | if (dot[dir] != '\n') { | ||
3547 | if (c == 'X') | ||
3548 | dot--; // delete prev char | ||
3549 | dot = yank_delete(dot, dot, 0, YANKDEL); // delete char | ||
3550 | } | ||
3551 | if (c == 's') | ||
3552 | goto dc_i; // start insrting | ||
3553 | end_cmd_q(); // stop adding to q | ||
3554 | break; | ||
3555 | case 'Z': // Z- if modified, {write}; exit | ||
3556 | // ZZ means to save file (if necessary), then exit | ||
3557 | c1 = get_one_char(); | ||
3558 | if (c1 != 'Z') { | ||
3559 | indicate_error(c); | ||
3560 | break; | ||
3561 | } | ||
3562 | if (file_modified | ||
3563 | #ifdef CONFIG_FEATURE_VI_READONLY | ||
3564 | && ! vi_readonly | ||
3565 | && ! readonly | ||
3566 | #endif /* CONFIG_FEATURE_VI_READONLY */ | ||
3567 | ) { | ||
3568 | cnt = file_write(cfn, text, end - 1); | ||
3569 | if (cnt == (end - 1 - text + 1)) { | ||
3570 | editing = 0; | ||
3571 | } | ||
3572 | } else { | ||
3573 | editing = 0; | ||
3574 | } | ||
3575 | break; | ||
3576 | case '^': // ^- move to first non-blank on line | ||
3577 | dot_begin(); | ||
3578 | dot_skip_over_ws(); | ||
3579 | break; | ||
3580 | case 'b': // b- back a word | ||
3581 | case 'e': // e- end of word | ||
3582 | if (cmdcnt-- > 1) { | ||
3583 | do_cmd(c); | ||
3584 | } // repeat cnt | ||
3585 | dir = FORWARD; | ||
3586 | if (c == 'b') | ||
3587 | dir = BACK; | ||
3588 | if ((dot + dir) < text || (dot + dir) > end - 1) | ||
3589 | break; | ||
3590 | dot += dir; | ||
3591 | if (isspace(*dot)) { | ||
3592 | dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS); | ||
3593 | } | ||
3594 | if (isalnum(*dot) || *dot == '_') { | ||
3595 | dot = skip_thing(dot, 1, dir, S_END_ALNUM); | ||
3596 | } else if (ispunct(*dot)) { | ||
3597 | dot = skip_thing(dot, 1, dir, S_END_PUNCT); | ||
3598 | } | ||
3599 | break; | ||
3600 | case 'c': // c- change something | ||
3601 | case 'd': // d- delete something | ||
3602 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
3603 | case 'y': // y- yank something | ||
3604 | case 'Y': // Y- Yank a line | ||
3605 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
3606 | yf = YANKDEL; // assume either "c" or "d" | ||
3607 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
3608 | if (c == 'y' || c == 'Y') | ||
3609 | yf = YANKONLY; | ||
3610 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
3611 | c1 = 'y'; | ||
3612 | if (c != 'Y') | ||
3613 | c1 = get_one_char(); // get the type of thing to delete | ||
3614 | find_range(&p, &q, c1); | ||
3615 | if (c1 == 27) { // ESC- user changed mind and wants out | ||
3616 | c = c1 = 27; // Escape- do nothing | ||
3617 | } else if (strchr("wW", c1)) { | ||
3618 | if (c == 'c') { | ||
3619 | // don't include trailing WS as part of word | ||
3620 | while (isblnk(*q)) { | ||
3621 | if (q <= text || q[-1] == '\n') | ||
3622 | break; | ||
3623 | q--; | ||
3624 | } | ||
3625 | } | ||
3626 | dot = yank_delete(p, q, 0, yf); // delete word | ||
3627 | } else if (strchr("^0bBeEft$", c1)) { | ||
3628 | // single line copy text into a register and delete | ||
3629 | dot = yank_delete(p, q, 0, yf); // delete word | ||
3630 | } else if (strchr("cdykjHL%+-{}\r\n", c1)) { | ||
3631 | // multiple line copy text into a register and delete | ||
3632 | dot = yank_delete(p, q, 1, yf); // delete lines | ||
3633 | if (c == 'c') { | ||
3634 | dot = char_insert(dot, '\n'); | ||
3635 | // on the last line of file don't move to prev line | ||
3636 | if (dot != (end-1)) { | ||
3637 | dot_prev(); | ||
3638 | } | ||
3639 | } else if (c == 'd') { | ||
3640 | dot_begin(); | ||
3641 | dot_skip_over_ws(); | ||
3642 | } | ||
3643 | } else { | ||
3644 | // could not recognize object | ||
3645 | c = c1 = 27; // error- | ||
3646 | indicate_error(c); | ||
3647 | } | ||
3648 | if (c1 != 27) { | ||
3649 | // if CHANGING, not deleting, start inserting after the delete | ||
3650 | if (c == 'c') { | ||
3651 | strcpy((char *) buf, "Change"); | ||
3652 | goto dc_i; // start inserting | ||
3653 | } | ||
3654 | if (c == 'd') { | ||
3655 | strcpy((char *) buf, "Delete"); | ||
3656 | } | ||
3657 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
3658 | if (c == 'y' || c == 'Y') { | ||
3659 | strcpy((char *) buf, "Yank"); | ||
3660 | } | ||
3661 | p = reg[YDreg]; | ||
3662 | q = p + strlen((char *) p); | ||
3663 | for (cnt = 0; p <= q; p++) { | ||
3664 | if (*p == '\n') | ||
3665 | cnt++; | ||
3666 | } | ||
3667 | psb("%s %d lines (%d chars) using [%c]", | ||
3668 | buf, cnt, strlen((char *) reg[YDreg]), what_reg()); | ||
3669 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
3670 | end_cmd_q(); // stop adding to q | ||
3671 | } | ||
3672 | break; | ||
3673 | case 'k': // k- goto prev line, same col | ||
3674 | case VI_K_UP: // cursor key Up | ||
3675 | if (cmdcnt-- > 1) { | ||
3676 | do_cmd(c); | ||
3677 | } // repeat cnt | ||
3678 | dot_prev(); | ||
3679 | dot = move_to_col(dot, ccol + offset); // try stay in same col | ||
3680 | break; | ||
3681 | case 'r': // r- replace the current char with user input | ||
3682 | c1 = get_one_char(); // get the replacement char | ||
3683 | if (*dot != '\n') { | ||
3684 | *dot = c1; | ||
3685 | file_modified = TRUE; // has the file been modified | ||
3686 | } | ||
3687 | end_cmd_q(); // stop adding to q | ||
3688 | break; | ||
3689 | case 't': // t- move to char prior to next x | ||
3690 | last_forward_char = get_one_char(); | ||
3691 | do_cmd(';'); | ||
3692 | if (*dot == last_forward_char) | ||
3693 | dot_left(); | ||
3694 | last_forward_char= 0; | ||
3695 | break; | ||
3696 | case 'w': // w- forward a word | ||
3697 | if (cmdcnt-- > 1) { | ||
3698 | do_cmd(c); | ||
3699 | } // repeat cnt | ||
3700 | if (isalnum(*dot) || *dot == '_') { // we are on ALNUM | ||
3701 | dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM); | ||
3702 | } else if (ispunct(*dot)) { // we are on PUNCT | ||
3703 | dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT); | ||
3704 | } | ||
3705 | if (dot < end - 1) | ||
3706 | dot++; // move over word | ||
3707 | if (isspace(*dot)) { | ||
3708 | dot = skip_thing(dot, 2, FORWARD, S_OVER_WS); | ||
3709 | } | ||
3710 | break; | ||
3711 | case 'z': // z- | ||
3712 | c1 = get_one_char(); // get the replacement char | ||
3713 | cnt = 0; | ||
3714 | if (c1 == '.') | ||
3715 | cnt = (rows - 2) / 2; // put dot at center | ||
3716 | if (c1 == '-') | ||
3717 | cnt = rows - 2; // put dot at bottom | ||
3718 | screenbegin = begin_line(dot); // start dot at top | ||
3719 | dot_scroll(cnt, -1); | ||
3720 | break; | ||
3721 | case '|': // |- move to column "cmdcnt" | ||
3722 | dot = move_to_col(dot, cmdcnt - 1); // try to move to column | ||
3723 | break; | ||
3724 | case '~': // ~- flip the case of letters a-z -> A-Z | ||
3725 | if (cmdcnt-- > 1) { | ||
3726 | do_cmd(c); | ||
3727 | } // repeat cnt | ||
3728 | if (islower(*dot)) { | ||
3729 | *dot = toupper(*dot); | ||
3730 | file_modified = TRUE; // has the file been modified | ||
3731 | } else if (isupper(*dot)) { | ||
3732 | *dot = tolower(*dot); | ||
3733 | file_modified = TRUE; // has the file been modified | ||
3734 | } | ||
3735 | dot_right(); | ||
3736 | end_cmd_q(); // stop adding to q | ||
3737 | break; | ||
3738 | //----- The Cursor and Function Keys ----------------------------- | ||
3739 | case VI_K_HOME: // Cursor Key Home | ||
3740 | dot_begin(); | ||
3741 | break; | ||
3742 | // The Fn keys could point to do_macro which could translate them | ||
3743 | case VI_K_FUN1: // Function Key F1 | ||
3744 | case VI_K_FUN2: // Function Key F2 | ||
3745 | case VI_K_FUN3: // Function Key F3 | ||
3746 | case VI_K_FUN4: // Function Key F4 | ||
3747 | case VI_K_FUN5: // Function Key F5 | ||
3748 | case VI_K_FUN6: // Function Key F6 | ||
3749 | case VI_K_FUN7: // Function Key F7 | ||
3750 | case VI_K_FUN8: // Function Key F8 | ||
3751 | case VI_K_FUN9: // Function Key F9 | ||
3752 | case VI_K_FUN10: // Function Key F10 | ||
3753 | case VI_K_FUN11: // Function Key F11 | ||
3754 | case VI_K_FUN12: // Function Key F12 | ||
3755 | break; | ||
3756 | } | ||
3757 | |||
3758 | dc1: | ||
3759 | // if text[] just became empty, add back an empty line | ||
3760 | if (end == text) { | ||
3761 | (void) char_insert(text, '\n'); // start empty buf with dummy line | ||
3762 | dot = text; | ||
3763 | } | ||
3764 | // it is OK for dot to exactly equal to end, otherwise check dot validity | ||
3765 | if (dot != end) { | ||
3766 | dot = bound_dot(dot); // make sure "dot" is valid | ||
3767 | } | ||
3768 | #ifdef CONFIG_FEATURE_VI_YANKMARK | ||
3769 | check_context(c); // update the current context | ||
3770 | #endif /* CONFIG_FEATURE_VI_YANKMARK */ | ||
3771 | |||
3772 | if (!isdigit(c)) | ||
3773 | cmdcnt = 0; // cmd was not a number, reset cmdcnt | ||
3774 | cnt = dot - begin_line(dot); | ||
3775 | // Try to stay off of the Newline | ||
3776 | if (*dot == '\n' && cnt > 0 && cmd_mode == 0) | ||
3777 | dot--; | ||
3778 | } | ||
3779 | |||
3780 | #ifdef CONFIG_FEATURE_VI_CRASHME | ||
3781 | static int totalcmds = 0; | ||
3782 | static int Mp = 85; // Movement command Probability | ||
3783 | static int Np = 90; // Non-movement command Probability | ||
3784 | static int Dp = 96; // Delete command Probability | ||
3785 | static int Ip = 97; // Insert command Probability | ||
3786 | static int Yp = 98; // Yank command Probability | ||
3787 | static int Pp = 99; // Put command Probability | ||
3788 | static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0; | ||
3789 | char chars[20] = "\t012345 abcdABCD-=.$"; | ||
3790 | char *words[20] = { "this", "is", "a", "test", | ||
3791 | "broadcast", "the", "emergency", "of", | ||
3792 | "system", "quick", "brown", "fox", | ||
3793 | "jumped", "over", "lazy", "dogs", | ||
3794 | "back", "January", "Febuary", "March" | ||
3795 | }; | ||
3796 | char *lines[20] = { | ||
3797 | "You should have received a copy of the GNU General Public License\n", | ||
3798 | "char c, cm, *cmd, *cmd1;\n", | ||
3799 | "generate a command by percentages\n", | ||
3800 | "Numbers may be typed as a prefix to some commands.\n", | ||
3801 | "Quit, discarding changes!\n", | ||
3802 | "Forced write, if permission originally not valid.\n", | ||
3803 | "In general, any ex or ed command (such as substitute or delete).\n", | ||
3804 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", | ||
3805 | "Please get w/ me and I will go over it with you.\n", | ||
3806 | "The following is a list of scheduled, committed changes.\n", | ||
3807 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", | ||
3808 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", | ||
3809 | "Any question about transactions please contact Sterling Huxley.\n", | ||
3810 | "I will try to get back to you by Friday, December 31.\n", | ||
3811 | "This Change will be implemented on Friday.\n", | ||
3812 | "Let me know if you have problems accessing this;\n", | ||
3813 | "Sterling Huxley recently added you to the access list.\n", | ||
3814 | "Would you like to go to lunch?\n", | ||
3815 | "The last command will be automatically run.\n", | ||
3816 | "This is too much english for a computer geek.\n", | ||
3817 | }; | ||
3818 | char *multilines[20] = { | ||
3819 | "You should have received a copy of the GNU General Public License\n", | ||
3820 | "char c, cm, *cmd, *cmd1;\n", | ||
3821 | "generate a command by percentages\n", | ||
3822 | "Numbers may be typed as a prefix to some commands.\n", | ||
3823 | "Quit, discarding changes!\n", | ||
3824 | "Forced write, if permission originally not valid.\n", | ||
3825 | "In general, any ex or ed command (such as substitute or delete).\n", | ||
3826 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n", | ||
3827 | "Please get w/ me and I will go over it with you.\n", | ||
3828 | "The following is a list of scheduled, committed changes.\n", | ||
3829 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n", | ||
3830 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n", | ||
3831 | "Any question about transactions please contact Sterling Huxley.\n", | ||
3832 | "I will try to get back to you by Friday, December 31.\n", | ||
3833 | "This Change will be implemented on Friday.\n", | ||
3834 | "Let me know if you have problems accessing this;\n", | ||
3835 | "Sterling Huxley recently added you to the access list.\n", | ||
3836 | "Would you like to go to lunch?\n", | ||
3837 | "The last command will be automatically run.\n", | ||
3838 | "This is too much english for a computer geek.\n", | ||
3839 | }; | ||
3840 | |||
3841 | // create a random command to execute | ||
3842 | static void crash_dummy() | ||
3843 | { | ||
3844 | static int sleeptime; // how long to pause between commands | ||
3845 | char c, cm, *cmd, *cmd1; | ||
3846 | int i, cnt, thing, rbi, startrbi, percent; | ||
3847 | |||
3848 | // "dot" movement commands | ||
3849 | cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL"; | ||
3850 | |||
3851 | // is there already a command running? | ||
3852 | if (readed_for_parse > 0) | ||
3853 | goto cd1; | ||
3854 | cd0: | ||
3855 | startrbi = rbi = 0; | ||
3856 | sleeptime = 0; // how long to pause between commands | ||
3857 | memset(readbuffer, '\0', BUFSIZ); // clear the read buffer | ||
3858 | // generate a command by percentages | ||
3859 | percent = (int) lrand48() % 100; // get a number from 0-99 | ||
3860 | if (percent < Mp) { // Movement commands | ||
3861 | // available commands | ||
3862 | cmd = cmd1; | ||
3863 | M++; | ||
3864 | } else if (percent < Np) { // non-movement commands | ||
3865 | cmd = "mz<>\'\""; // available commands | ||
3866 | N++; | ||
3867 | } else if (percent < Dp) { // Delete commands | ||
3868 | cmd = "dx"; // available commands | ||
3869 | D++; | ||
3870 | } else if (percent < Ip) { // Inset commands | ||
3871 | cmd = "iIaAsrJ"; // available commands | ||
3872 | I++; | ||
3873 | } else if (percent < Yp) { // Yank commands | ||
3874 | cmd = "yY"; // available commands | ||
3875 | Y++; | ||
3876 | } else if (percent < Pp) { // Put commands | ||
3877 | cmd = "pP"; // available commands | ||
3878 | P++; | ||
3879 | } else { | ||
3880 | // We do not know how to handle this command, try again | ||
3881 | U++; | ||
3882 | goto cd0; | ||
3883 | } | ||
3884 | // randomly pick one of the available cmds from "cmd[]" | ||
3885 | i = (int) lrand48() % strlen(cmd); | ||
3886 | cm = cmd[i]; | ||
3887 | if (strchr(":\024", cm)) | ||
3888 | goto cd0; // dont allow colon or ctrl-T commands | ||
3889 | readbuffer[rbi++] = cm; // put cmd into input buffer | ||
3890 | |||
3891 | // now we have the command- | ||
3892 | // there are 1, 2, and multi char commands | ||
3893 | // find out which and generate the rest of command as necessary | ||
3894 | if (strchr("dmryz<>\'\"", cm)) { // 2-char commands | ||
3895 | cmd1 = " \n\r0$^-+wWeEbBhjklHL"; | ||
3896 | if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[] | ||
3897 | cmd1 = "abcdefghijklmnopqrstuvwxyz"; | ||
3898 | } | ||
3899 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command | ||
3900 | c = cmd1[thing]; | ||
3901 | readbuffer[rbi++] = c; // add movement to input buffer | ||
3902 | } | ||
3903 | if (strchr("iIaAsc", cm)) { // multi-char commands | ||
3904 | if (cm == 'c') { | ||
3905 | // change some thing | ||
3906 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command | ||
3907 | c = cmd1[thing]; | ||
3908 | readbuffer[rbi++] = c; // add movement to input buffer | ||
3909 | } | ||
3910 | thing = (int) lrand48() % 4; // what thing to insert | ||
3911 | cnt = (int) lrand48() % 10; // how many to insert | ||
3912 | for (i = 0; i < cnt; i++) { | ||
3913 | if (thing == 0) { // insert chars | ||
3914 | readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))]; | ||
3915 | } else if (thing == 1) { // insert words | ||
3916 | strcat((char *) readbuffer, words[(int) lrand48() % 20]); | ||
3917 | strcat((char *) readbuffer, " "); | ||
3918 | sleeptime = 0; // how fast to type | ||
3919 | } else if (thing == 2) { // insert lines | ||
3920 | strcat((char *) readbuffer, lines[(int) lrand48() % 20]); | ||
3921 | sleeptime = 0; // how fast to type | ||
3922 | } else { // insert multi-lines | ||
3923 | strcat((char *) readbuffer, multilines[(int) lrand48() % 20]); | ||
3924 | sleeptime = 0; // how fast to type | ||
3925 | } | ||
3926 | } | ||
3927 | strcat((char *) readbuffer, "\033"); | ||
3928 | } | ||
3929 | readed_for_parse = strlen(readbuffer); | ||
3930 | cd1: | ||
3931 | totalcmds++; | ||
3932 | if (sleeptime > 0) | ||
3933 | (void) mysleep(sleeptime); // sleep 1/100 sec | ||
3934 | } | ||
3935 | |||
3936 | // test to see if there are any errors | ||
3937 | static void crash_test() | ||
3938 | { | ||
3939 | static time_t oldtim; | ||
3940 | time_t tim; | ||
3941 | char d[2], msg[BUFSIZ]; | ||
3942 | |||
3943 | msg[0] = '\0'; | ||
3944 | if (end < text) { | ||
3945 | strcat((char *) msg, "end<text "); | ||
3946 | } | ||
3947 | if (end > textend) { | ||
3948 | strcat((char *) msg, "end>textend "); | ||
3949 | } | ||
3950 | if (dot < text) { | ||
3951 | strcat((char *) msg, "dot<text "); | ||
3952 | } | ||
3953 | if (dot > end) { | ||
3954 | strcat((char *) msg, "dot>end "); | ||
3955 | } | ||
3956 | if (screenbegin < text) { | ||
3957 | strcat((char *) msg, "screenbegin<text "); | ||
3958 | } | ||
3959 | if (screenbegin > end - 1) { | ||
3960 | strcat((char *) msg, "screenbegin>end-1 "); | ||
3961 | } | ||
3962 | |||
3963 | if (strlen(msg) > 0) { | ||
3964 | alarm(0); | ||
3965 | printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s", | ||
3966 | totalcmds, last_input_char, msg, SOs, SOn); | ||
3967 | fflush(stdout); | ||
3968 | while (read(0, d, 1) > 0) { | ||
3969 | if (d[0] == '\n' || d[0] == '\r') | ||
3970 | break; | ||
3971 | } | ||
3972 | alarm(3); | ||
3973 | } | ||
3974 | tim = (time_t) time((time_t *) 0); | ||
3975 | if (tim >= (oldtim + 3)) { | ||
3976 | sprintf((char *) status_buffer, | ||
3977 | "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d", | ||
3978 | totalcmds, M, N, I, D, Y, P, U, end - text + 1); | ||
3979 | oldtim = tim; | ||
3980 | } | ||
3981 | return; | ||
3982 | } | ||
3983 | #endif /* CONFIG_FEATURE_VI_CRASHME */ | ||