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bfe13c81 KB |
1 | /* |
2 | * Copyright (c) 1988 Mark Nudleman | |
3 | * Copyright (c) 1988 Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
f15db449 | 6 | * %sccs.include.redist.c% |
bfe13c81 KB |
7 | */ |
8 | ||
9 | #ifndef lint | |
bc0c28c1 | 10 | static char sccsid[] = "@(#)command.c 5.21 (Berkeley) %G%"; |
bfe13c81 KB |
11 | #endif /* not lint */ |
12 | ||
bc258617 KB |
13 | #include <sys/param.h> |
14 | #include <stdio.h> | |
15 | #include <ctype.h> | |
16 | #include <less.h> | |
f5506e0f | 17 | #include "pathnames.h" |
bfe13c81 KB |
18 | |
19 | #define NO_MCA 0 | |
20 | #define MCA_DONE 1 | |
21 | #define MCA_MORE 2 | |
22 | ||
bc258617 | 23 | extern int erase_char, kill_char, werase_char; |
bfe13c81 KB |
24 | extern int ispipe; |
25 | extern int sigs; | |
26 | extern int quit_at_eof; | |
27 | extern int hit_eof; | |
28 | extern int sc_width; | |
29 | extern int sc_height; | |
30 | extern int sc_window; | |
31 | extern int curr_ac; | |
32 | extern int ac; | |
33 | extern int quitting; | |
34 | extern int scroll; | |
bfe13c81 KB |
35 | extern int screen_trashed; /* The screen has been overwritten */ |
36 | ||
37 | static char cmdbuf[120]; /* Buffer for holding a multi-char command */ | |
bfe13c81 KB |
38 | static char *cp; /* Pointer into cmdbuf */ |
39 | static int cmd_col; /* Current column of the multi-char command */ | |
bc258617 | 40 | static int longprompt; /* if stat command instead of prompt */ |
bfe13c81 KB |
41 | static int mca; /* The multicharacter command (action) */ |
42 | static int last_mca; /* The previous mca */ | |
43 | static int number; /* The number typed by the user */ | |
44 | static int wsearch; /* Search for matches (1) or non-matches (0) */ | |
45 | ||
dce1e0a2 KB |
46 | #define CMD_RESET cp = cmdbuf /* reset command buffer to empty */ |
47 | #define CMD_EXEC lower_left(); flush() | |
bfe13c81 | 48 | |
dce1e0a2 | 49 | /* backspace in command buffer. */ |
bc258617 | 50 | static |
bfe13c81 KB |
51 | cmd_erase() |
52 | { | |
dce1e0a2 KB |
53 | /* |
54 | * backspace past beginning of the string: this usually means | |
55 | * abort the command. | |
56 | */ | |
bfe13c81 | 57 | if (cp == cmdbuf) |
bc258617 | 58 | return(1); |
bfe13c81 | 59 | |
dce1e0a2 | 60 | /* erase an extra character, for the carat. */ |
bc258617 | 61 | if (CONTROL_CHAR(*--cp)) { |
bfe13c81 | 62 | backspace(); |
bc258617 | 63 | --cmd_col; |
bfe13c81 | 64 | } |
dce1e0a2 | 65 | |
bfe13c81 | 66 | backspace(); |
bc258617 KB |
67 | --cmd_col; |
68 | return(0); | |
bfe13c81 KB |
69 | } |
70 | ||
dce1e0a2 | 71 | /* set up the display to start a new multi-character command. */ |
bfe13c81 KB |
72 | start_mca(action, prompt) |
73 | int action; | |
74 | char *prompt; | |
75 | { | |
76 | lower_left(); | |
77 | clear_eol(); | |
78 | putstr(prompt); | |
79 | cmd_col = strlen(prompt); | |
80 | mca = action; | |
81 | } | |
82 | ||
83 | /* | |
dce1e0a2 | 84 | * process a single character of a multi-character command, such as |
bfe13c81 KB |
85 | * a number, or the pattern of a search command. |
86 | */ | |
bc258617 | 87 | static |
bfe13c81 KB |
88 | cmd_char(c) |
89 | int c; | |
90 | { | |
91 | if (c == erase_char) | |
bc258617 KB |
92 | return(cmd_erase()); |
93 | /* in this order, in case werase == erase_char */ | |
94 | if (c == werase_char) { | |
95 | if (cp > cmdbuf) { | |
96 | while (isspace(cp[-1]) && !cmd_erase()); | |
97 | while (!isspace(cp[-1]) && !cmd_erase()); | |
98 | while (isspace(cp[-1]) && !cmd_erase()); | |
99 | } | |
100 | return(cp == cmdbuf); | |
101 | } | |
102 | if (c == kill_char) { | |
103 | while (!cmd_erase()); | |
104 | return(1); | |
105 | } | |
106 | /* | |
107 | * No room in the command buffer, or no room on the screen; | |
108 | * {{ Could get fancy here; maybe shift the displayed line | |
109 | * and make room for more chars, like ksh. }} | |
110 | */ | |
111 | if (cp >= &cmdbuf[sizeof(cmdbuf)-1] || cmd_col >= sc_width-3) | |
bfe13c81 | 112 | bell(); |
bc258617 | 113 | else { |
bfe13c81 | 114 | *cp++ = c; |
bc258617 | 115 | if (CONTROL_CHAR(c)) { |
bfe13c81 KB |
116 | putchr('^'); |
117 | cmd_col++; | |
bc258617 | 118 | c = CARAT_CHAR(c); |
bfe13c81 KB |
119 | } |
120 | putchr(c); | |
121 | cmd_col++; | |
122 | } | |
bc258617 | 123 | return(0); |
bfe13c81 KB |
124 | } |
125 | ||
bfe13c81 KB |
126 | prompt() |
127 | { | |
00f91e6d | 128 | extern int linenums, short_file; |
7a3f847f | 129 | extern char *current_name, *firstsearch, *next_name; |
bc258617 KB |
130 | off_t len, pos, ch_length(), position(), forw_line(); |
131 | char pbuf[40]; | |
bfe13c81 KB |
132 | |
133 | /* | |
bc258617 KB |
134 | * if nothing is displayed yet, display starting from line 1; |
135 | * if search string provided, go there instead. | |
bfe13c81 | 136 | */ |
bc258617 KB |
137 | if (position(TOP) == NULL_POSITION) { |
138 | if (forw_line((off_t)0) == NULL_POSITION) | |
139 | return(0); | |
140 | if (!firstsearch || !search(1, firstsearch, 1, 1)) | |
141 | jump_back(1); | |
142 | } | |
bfe13c81 KB |
143 | else if (screen_trashed) |
144 | repaint(); | |
145 | ||
bc258617 | 146 | /* if no -e flag and we've hit EOF on the last file, quit. */ |
00f91e6d | 147 | if ((!quit_at_eof || short_file) && hit_eof && curr_ac + 1 >= ac) |
bfe13c81 KB |
148 | quit(); |
149 | ||
bc258617 | 150 | /* select the proper prompt and display it. */ |
bfe13c81 KB |
151 | lower_left(); |
152 | clear_eol(); | |
bc258617 KB |
153 | if (longprompt) { |
154 | so_enter(); | |
155 | putstr(current_name); | |
156 | putstr(":"); | |
157 | if (!ispipe) { | |
158 | (void)sprintf(pbuf, " file %d/%d", curr_ac + 1, ac); | |
159 | putstr(pbuf); | |
160 | } | |
161 | if (linenums) { | |
6d713a99 | 162 | (void)sprintf(pbuf, " line %d", currline(BOTTOM)); |
bc258617 KB |
163 | putstr(pbuf); |
164 | } | |
6d713a99 | 165 | if ((pos = position(BOTTOM)) != NULL_POSITION) { |
bc258617 KB |
166 | (void)sprintf(pbuf, " byte %ld", pos); |
167 | putstr(pbuf); | |
168 | if (!ispipe && (len = ch_length())) { | |
6d713a99 KB |
169 | (void)sprintf(pbuf, "/%ld pct %ld%%", |
170 | len, ((100 * pos) / len)); | |
bc258617 KB |
171 | putstr(pbuf); |
172 | } | |
173 | } | |
174 | so_exit(); | |
175 | longprompt = 0; | |
176 | } | |
bc258617 | 177 | else { |
bfe13c81 | 178 | so_enter(); |
bc258617 KB |
179 | putstr(current_name); |
180 | if (hit_eof) | |
7a3f847f | 181 | if (next_name) { |
d93c9cef CL |
182 | putstr(": END (next file: "); |
183 | putstr(next_name); | |
184 | putstr(")"); | |
7a3f847f KB |
185 | } |
186 | else | |
187 | putstr(": END"); | |
e80c9812 KB |
188 | else if (!ispipe && |
189 | (pos = position(BOTTOM)) != NULL_POSITION && | |
190 | (len = ch_length())) { | |
191 | (void)sprintf(pbuf, " (%ld%%)", ((100 * pos) / len)); | |
bc258617 KB |
192 | putstr(pbuf); |
193 | } | |
bfe13c81 KB |
194 | so_exit(); |
195 | } | |
bc258617 | 196 | return(1); |
bfe13c81 KB |
197 | } |
198 | ||
dce1e0a2 | 199 | /* get command character. */ |
bc258617 | 200 | static |
bfe13c81 KB |
201 | getcc() |
202 | { | |
62b94f40 KB |
203 | extern int cmdstack; |
204 | int ch; | |
205 | ||
206 | /* left over from error() routine. */ | |
207 | if (cmdstack) { | |
208 | ch = cmdstack; | |
209 | cmdstack = NULL; | |
210 | return(ch); | |
211 | } | |
bc258617 | 212 | if (cp > cmdbuf && position(TOP) == NULL_POSITION) { |
bfe13c81 | 213 | /* |
bc258617 KB |
214 | * Command is incomplete, so try to complete it. |
215 | * There are only two cases: | |
216 | * 1. We have "/string" but no newline. Add the \n. | |
217 | * 2. We have a number but no command. Treat as #g. | |
218 | * (This is all pretty hokey.) | |
bfe13c81 | 219 | */ |
bc258617 KB |
220 | if (mca != A_DIGIT) |
221 | /* Not a number; must be search string */ | |
222 | return('\n'); | |
223 | else | |
224 | /* A number; append a 'g' */ | |
225 | return('g'); | |
bfe13c81 | 226 | } |
bc258617 | 227 | return(getchr()); |
bfe13c81 KB |
228 | } |
229 | ||
dce1e0a2 | 230 | /* execute a multicharacter command. */ |
bc258617 | 231 | static |
bfe13c81 KB |
232 | exec_mca() |
233 | { | |
bc258617 KB |
234 | extern int file; |
235 | extern char *tagfile; | |
bfe13c81 | 236 | register char *p; |
bc258617 | 237 | char *glob(); |
bfe13c81 KB |
238 | |
239 | *cp = '\0'; | |
dce1e0a2 | 240 | CMD_EXEC; |
bc258617 | 241 | switch (mca) { |
bfe13c81 | 242 | case A_F_SEARCH: |
bc258617 | 243 | (void)search(1, cmdbuf, number, wsearch); |
bfe13c81 KB |
244 | break; |
245 | case A_B_SEARCH: | |
bc258617 | 246 | (void)search(0, cmdbuf, number, wsearch); |
bfe13c81 KB |
247 | break; |
248 | case A_EXAMINE: | |
bc258617 KB |
249 | for (p = cmdbuf; isspace(*p); ++p); |
250 | (void)edit(glob(p)); | |
251 | break; | |
252 | case A_TAGFILE: | |
253 | for (p = cmdbuf; isspace(*p); ++p); | |
254 | findtag(p); | |
255 | if (tagfile == NULL) | |
256 | break; | |
257 | if (edit(tagfile)) | |
258 | (void)tagsearch(); | |
bfe13c81 | 259 | break; |
bfe13c81 KB |
260 | } |
261 | } | |
262 | ||
dce1e0a2 | 263 | /* add a character to a multi-character command. */ |
bc258617 | 264 | static |
bfe13c81 KB |
265 | mca_char(c) |
266 | int c; | |
267 | { | |
bc258617 KB |
268 | switch (mca) { |
269 | case 0: /* not in a multicharacter command. */ | |
270 | case A_PREFIX: /* in the prefix of a command. */ | |
271 | return(NO_MCA); | |
bfe13c81 KB |
272 | case A_DIGIT: |
273 | /* | |
274 | * Entering digits of a number. | |
275 | * Terminated by a non-digit. | |
276 | */ | |
bc258617 KB |
277 | if (!isascii(c) || !isdigit(c) && |
278 | c != erase_char && c != kill_char && c != werase_char) { | |
bfe13c81 KB |
279 | /* |
280 | * Not part of the number. | |
281 | * Treat as a normal command character. | |
282 | */ | |
dce1e0a2 KB |
283 | *cp = '\0'; |
284 | number = atoi(cmdbuf); | |
285 | CMD_RESET; | |
bfe13c81 | 286 | mca = 0; |
bc258617 | 287 | return(NO_MCA); |
bfe13c81 KB |
288 | } |
289 | break; | |
290 | } | |
291 | ||
292 | /* | |
293 | * Any other multicharacter command | |
294 | * is terminated by a newline. | |
295 | */ | |
bc258617 | 296 | if (c == '\n' || c == '\r') { |
bfe13c81 | 297 | exec_mca(); |
bc258617 | 298 | return(MCA_DONE); |
bfe13c81 | 299 | } |
dce1e0a2 KB |
300 | |
301 | /* append the char to the command buffer. */ | |
bfe13c81 | 302 | if (cmd_char(c)) |
bc258617 | 303 | return(MCA_DONE); |
dce1e0a2 | 304 | |
bc258617 | 305 | return(MCA_MORE); |
bfe13c81 KB |
306 | } |
307 | ||
308 | /* | |
309 | * Main command processor. | |
310 | * Accept and execute commands until a quit command, then return. | |
311 | */ | |
bfe13c81 KB |
312 | commands() |
313 | { | |
314 | register int c; | |
315 | register int action; | |
316 | ||
317 | last_mca = 0; | |
318 | scroll = (sc_height + 1) / 2; | |
319 | ||
bc258617 | 320 | for (;;) { |
bfe13c81 KB |
321 | mca = 0; |
322 | number = 0; | |
323 | ||
324 | /* | |
325 | * See if any signals need processing. | |
326 | */ | |
bc258617 | 327 | if (sigs) { |
bfe13c81 KB |
328 | psignals(); |
329 | if (quitting) | |
330 | quit(); | |
331 | } | |
bfe13c81 KB |
332 | /* |
333 | * Display prompt and accept a character. | |
334 | */ | |
dce1e0a2 | 335 | CMD_RESET; |
bc258617 KB |
336 | if (!prompt()) { |
337 | next_file(1); | |
338 | continue; | |
339 | } | |
bfe13c81 KB |
340 | noprefix(); |
341 | c = getcc(); | |
342 | ||
f5167107 | 343 | again: if (sigs) |
bfe13c81 KB |
344 | continue; |
345 | ||
346 | /* | |
347 | * If we are in a multicharacter command, call mca_char. | |
348 | * Otherwise we call cmd_decode to determine the | |
349 | * action to be performed. | |
350 | */ | |
351 | if (mca) | |
bc258617 | 352 | switch (mca_char(c)) { |
bfe13c81 KB |
353 | case MCA_MORE: |
354 | /* | |
355 | * Need another character. | |
356 | */ | |
357 | c = getcc(); | |
358 | goto again; | |
359 | case MCA_DONE: | |
360 | /* | |
361 | * Command has been handled by mca_char. | |
362 | * Start clean with a prompt. | |
363 | */ | |
364 | continue; | |
365 | case NO_MCA: | |
366 | /* | |
367 | * Not a multi-char command | |
368 | * (at least, not anymore). | |
369 | */ | |
370 | break; | |
371 | } | |
372 | ||
dce1e0a2 KB |
373 | /* decode the command character and decide what to do. */ |
374 | switch (action = cmd_decode(c)) { | |
375 | case A_DIGIT: /* first digit of a number */ | |
bfe13c81 KB |
376 | start_mca(A_DIGIT, ":"); |
377 | goto again; | |
dce1e0a2 KB |
378 | case A_F_SCREEN: /* forward one screen */ |
379 | CMD_EXEC; | |
380 | if (number <= 0 && (number = sc_window) <= 0) | |
bfe13c81 | 381 | number = sc_height - 1; |
bfe13c81 KB |
382 | forward(number, 1); |
383 | break; | |
dce1e0a2 KB |
384 | case A_B_SCREEN: /* backward one screen */ |
385 | CMD_EXEC; | |
386 | if (number <= 0 && (number = sc_window) <= 0) | |
bfe13c81 | 387 | number = sc_height - 1; |
bfe13c81 KB |
388 | backward(number, 1); |
389 | break; | |
dce1e0a2 KB |
390 | case A_F_LINE: /* forward N (default 1) line */ |
391 | CMD_EXEC; | |
392 | forward(number <= 0 ? 1 : number, 0); | |
bfe13c81 | 393 | break; |
dce1e0a2 KB |
394 | case A_B_LINE: /* backward N (default 1) line */ |
395 | CMD_EXEC; | |
396 | backward(number <= 0 ? 1 : number, 0); | |
bfe13c81 | 397 | break; |
dce1e0a2 KB |
398 | case A_F_SCROLL: /* forward N lines */ |
399 | CMD_EXEC; | |
bfe13c81 KB |
400 | if (number > 0) |
401 | scroll = number; | |
bfe13c81 KB |
402 | forward(scroll, 0); |
403 | break; | |
dce1e0a2 KB |
404 | case A_B_SCROLL: /* backward N lines */ |
405 | CMD_EXEC; | |
bfe13c81 KB |
406 | if (number > 0) |
407 | scroll = number; | |
bfe13c81 KB |
408 | backward(scroll, 0); |
409 | break; | |
dce1e0a2 KB |
410 | case A_FREPAINT: /* flush buffers and repaint */ |
411 | if (!ispipe) { | |
bfe13c81 KB |
412 | ch_init(0, 0); |
413 | clr_linenum(); | |
414 | } | |
dce1e0a2 | 415 | /* FALLTHROUGH */ |
e810d3c9 | 416 | case A_REPAINT: /* repaint the screen */ |
dce1e0a2 | 417 | CMD_EXEC; |
bfe13c81 KB |
418 | repaint(); |
419 | break; | |
dce1e0a2 KB |
420 | case A_GOLINE: /* go to line N, default 1 */ |
421 | CMD_EXEC; | |
bfe13c81 KB |
422 | if (number <= 0) |
423 | number = 1; | |
bfe13c81 KB |
424 | jump_back(number); |
425 | break; | |
dce1e0a2 KB |
426 | case A_PERCENT: /* go to percent of file */ |
427 | CMD_EXEC; | |
bfe13c81 KB |
428 | if (number < 0) |
429 | number = 0; | |
dce1e0a2 | 430 | else if (number > 100) |
bfe13c81 | 431 | number = 100; |
bfe13c81 KB |
432 | jump_percent(number); |
433 | break; | |
dce1e0a2 KB |
434 | case A_GOEND: /* go to line N, default end */ |
435 | CMD_EXEC; | |
bfe13c81 KB |
436 | if (number <= 0) |
437 | jump_forw(); | |
438 | else | |
439 | jump_back(number); | |
440 | break; | |
bc258617 KB |
441 | case A_STAT: /* print file name, etc. */ |
442 | longprompt = 1; | |
443 | continue; | |
bc258617 | 444 | case A_QUIT: /* exit */ |
bfe13c81 | 445 | quit(); |
dce1e0a2 | 446 | case A_F_SEARCH: /* search for a pattern */ |
bfe13c81 | 447 | case A_B_SEARCH: |
bfe13c81 KB |
448 | if (number <= 0) |
449 | number = 1; | |
450 | start_mca(action, (action==A_F_SEARCH) ? "/" : "?"); | |
451 | last_mca = mca; | |
452 | wsearch = 1; | |
453 | c = getcc(); | |
bc258617 | 454 | if (c == '!') { |
bfe13c81 | 455 | /* |
dce1e0a2 KB |
456 | * Invert the sense of the search; set wsearch |
457 | * to 0 and get a new character for the start | |
458 | * of the pattern. | |
bfe13c81 KB |
459 | */ |
460 | start_mca(action, | |
dce1e0a2 | 461 | (action == A_F_SEARCH) ? "!/" : "!?"); |
bfe13c81 KB |
462 | wsearch = 0; |
463 | c = getcc(); | |
464 | } | |
465 | goto again; | |
dce1e0a2 | 466 | case A_AGAIN_SEARCH: /* repeat previous search */ |
bfe13c81 KB |
467 | if (number <= 0) |
468 | number = 1; | |
469 | if (wsearch) | |
470 | start_mca(last_mca, | |
dce1e0a2 | 471 | (last_mca == A_F_SEARCH) ? "/" : "?"); |
bfe13c81 KB |
472 | else |
473 | start_mca(last_mca, | |
dce1e0a2 KB |
474 | (last_mca == A_F_SEARCH) ? "!/" : "!?"); |
475 | CMD_EXEC; | |
bc258617 KB |
476 | (void)search(mca == A_F_SEARCH, (char *)NULL, |
477 | number, wsearch); | |
bfe13c81 | 478 | break; |
dce1e0a2 | 479 | case A_HELP: /* help */ |
bfe13c81 KB |
480 | lower_left(); |
481 | clear_eol(); | |
482 | putstr("help"); | |
dce1e0a2 | 483 | CMD_EXEC; |
bfe13c81 KB |
484 | help(); |
485 | break; | |
dce1e0a2 KB |
486 | case A_TAGFILE: /* tag a new file */ |
487 | CMD_RESET; | |
bc258617 KB |
488 | start_mca(A_TAGFILE, "Tag: "); |
489 | c = getcc(); | |
490 | goto again; | |
dce1e0a2 KB |
491 | case A_FILE_LIST: /* show list of file names */ |
492 | CMD_EXEC; | |
e810d3c9 KB |
493 | showlist(); |
494 | repaint(); | |
495 | break; | |
dce1e0a2 KB |
496 | case A_EXAMINE: /* edit a new file */ |
497 | CMD_RESET; | |
bfe13c81 KB |
498 | start_mca(A_EXAMINE, "Examine: "); |
499 | c = getcc(); | |
500 | goto again; | |
dce1e0a2 KB |
501 | case A_VISUAL: /* invoke the editor */ |
502 | if (ispipe) { | |
bfe13c81 KB |
503 | error("Cannot edit standard input"); |
504 | break; | |
505 | } | |
dce1e0a2 | 506 | CMD_EXEC; |
1a2c8d49 | 507 | editfile(); |
bfe13c81 KB |
508 | ch_init(0, 0); |
509 | clr_linenum(); | |
510 | break; | |
dce1e0a2 | 511 | case A_NEXT_FILE: /* examine next file */ |
bfe13c81 KB |
512 | if (number <= 0) |
513 | number = 1; | |
514 | next_file(number); | |
515 | break; | |
dce1e0a2 | 516 | case A_PREV_FILE: /* examine previous file */ |
bfe13c81 KB |
517 | if (number <= 0) |
518 | number = 1; | |
519 | prev_file(number); | |
520 | break; | |
dce1e0a2 | 521 | case A_SETMARK: /* set a mark */ |
bfe13c81 KB |
522 | lower_left(); |
523 | clear_eol(); | |
524 | start_mca(A_SETMARK, "mark: "); | |
525 | c = getcc(); | |
526 | if (c == erase_char || c == kill_char) | |
527 | break; | |
528 | setmark(c); | |
529 | break; | |
dce1e0a2 | 530 | case A_GOMARK: /* go to mark */ |
bfe13c81 KB |
531 | lower_left(); |
532 | clear_eol(); | |
533 | start_mca(A_GOMARK, "goto mark: "); | |
534 | c = getcc(); | |
535 | if (c == erase_char || c == kill_char) | |
536 | break; | |
537 | gomark(c); | |
538 | break; | |
bfe13c81 KB |
539 | case A_PREFIX: |
540 | /* | |
541 | * The command is incomplete (more chars are needed). | |
dce1e0a2 KB |
542 | * Display the current char so the user knows what's |
543 | * going on and get another character. | |
bfe13c81 KB |
544 | */ |
545 | if (mca != A_PREFIX) | |
dce1e0a2 KB |
546 | start_mca(A_PREFIX, ""); |
547 | if (CONTROL_CHAR(c)) { | |
bfe13c81 | 548 | putchr('^'); |
bc258617 | 549 | c = CARAT_CHAR(c); |
bfe13c81 KB |
550 | } |
551 | putchr(c); | |
552 | c = getcc(); | |
553 | goto again; | |
bfe13c81 KB |
554 | default: |
555 | bell(); | |
556 | break; | |
557 | } | |
558 | } | |
559 | } | |
1a2c8d49 | 560 | |
1a2c8d49 KB |
561 | editfile() |
562 | { | |
bc258617 | 563 | extern char *current_file; |
1a2c8d49 KB |
564 | static int dolinenumber; |
565 | static char *editor; | |
566 | int c; | |
bc258617 | 567 | char buf[MAXPATHLEN * 2 + 20], *getenv(); |
1a2c8d49 KB |
568 | |
569 | if (editor == NULL) { | |
570 | editor = getenv("EDITOR"); | |
571 | /* pass the line number to vi */ | |
572 | if (editor == NULL || *editor == '\0') { | |
f5506e0f | 573 | editor = _PATH_VI; |
1a2c8d49 KB |
574 | dolinenumber = 1; |
575 | } | |
576 | else | |
577 | dolinenumber = 0; | |
578 | } | |
579 | if (dolinenumber && (c = currline(MIDDLE))) | |
580 | (void)sprintf(buf, "%s +%d %s", editor, c, current_file); | |
581 | else | |
582 | (void)sprintf(buf, "%s %s", editor, current_file); | |
583 | lsystem(buf); | |
584 | } | |
e810d3c9 | 585 | |
e810d3c9 KB |
586 | showlist() |
587 | { | |
588 | extern int sc_width; | |
589 | extern char **av; | |
590 | register int indx, width; | |
591 | int len; | |
592 | char *p; | |
593 | ||
594 | if (ac <= 0) { | |
595 | error("No files provided as arguments."); | |
596 | return; | |
597 | } | |
598 | for (width = indx = 0; indx < ac;) { | |
599 | p = strcmp(av[indx], "-") ? av[indx] : "stdin"; | |
600 | len = strlen(p) + 1; | |
601 | if (curr_ac == indx) | |
602 | len += 2; | |
603 | if (width + len + 1 >= sc_width) { | |
604 | if (!width) { | |
605 | if (curr_ac == indx) | |
606 | putchr('['); | |
607 | putstr(p); | |
608 | if (curr_ac == indx) | |
609 | putchr(']'); | |
610 | ++indx; | |
611 | } | |
612 | width = 0; | |
613 | putchr('\n'); | |
614 | continue; | |
615 | } | |
616 | if (width) | |
617 | putchr(' '); | |
618 | if (curr_ac == indx) | |
619 | putchr('['); | |
620 | putstr(p); | |
621 | if (curr_ac == indx) | |
622 | putchr(']'); | |
623 | width += len; | |
624 | ++indx; | |
625 | } | |
626 | putchr('\n'); | |
627 | error((char *)NULL); | |
628 | } |