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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 | * | |
bfe13c81 KB |
6 | * Redistribution and use in source and binary forms are permitted |
7 | * provided that the above copyright notice and this paragraph are | |
8 | * duplicated in all such forms and that any documentation, | |
9 | * advertising materials, and other materials related to such | |
10 | * distribution and use acknowledge that the software was developed | |
a942b40b KB |
11 | * by Mark Nudleman and the University of California, Berkeley. The |
12 | * name of Mark Nudleman or the | |
bfe13c81 KB |
13 | * University may not be used to endorse or promote products derived |
14 | * from this software without specific prior written permission. | |
15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
17 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
18 | */ | |
19 | ||
20 | #ifndef lint | |
e80c9812 | 21 | static char sccsid[] = "@(#)command.c 5.16 (Berkeley) %G%"; |
bfe13c81 KB |
22 | #endif /* not lint */ |
23 | ||
bc258617 KB |
24 | #include <sys/param.h> |
25 | #include <stdio.h> | |
26 | #include <ctype.h> | |
27 | #include <less.h> | |
bfe13c81 KB |
28 | |
29 | #define NO_MCA 0 | |
30 | #define MCA_DONE 1 | |
31 | #define MCA_MORE 2 | |
32 | ||
bc258617 | 33 | extern int erase_char, kill_char, werase_char; |
bfe13c81 KB |
34 | extern int ispipe; |
35 | extern int sigs; | |
36 | extern int quit_at_eof; | |
37 | extern int hit_eof; | |
38 | extern int sc_width; | |
39 | extern int sc_height; | |
40 | extern int sc_window; | |
41 | extern int curr_ac; | |
42 | extern int ac; | |
43 | extern int quitting; | |
44 | extern int scroll; | |
bfe13c81 KB |
45 | extern int screen_trashed; /* The screen has been overwritten */ |
46 | ||
47 | static char cmdbuf[120]; /* Buffer for holding a multi-char command */ | |
bfe13c81 KB |
48 | static char *cp; /* Pointer into cmdbuf */ |
49 | static int cmd_col; /* Current column of the multi-char command */ | |
bc258617 | 50 | static int longprompt; /* if stat command instead of prompt */ |
bfe13c81 KB |
51 | static int mca; /* The multicharacter command (action) */ |
52 | static int last_mca; /* The previous mca */ | |
53 | static int number; /* The number typed by the user */ | |
54 | static int wsearch; /* Search for matches (1) or non-matches (0) */ | |
55 | ||
dce1e0a2 KB |
56 | #define CMD_RESET cp = cmdbuf /* reset command buffer to empty */ |
57 | #define CMD_EXEC lower_left(); flush() | |
bfe13c81 | 58 | |
dce1e0a2 | 59 | /* backspace in command buffer. */ |
bc258617 | 60 | static |
bfe13c81 KB |
61 | cmd_erase() |
62 | { | |
dce1e0a2 KB |
63 | /* |
64 | * backspace past beginning of the string: this usually means | |
65 | * abort the command. | |
66 | */ | |
bfe13c81 | 67 | if (cp == cmdbuf) |
bc258617 | 68 | return(1); |
bfe13c81 | 69 | |
dce1e0a2 | 70 | /* erase an extra character, for the carat. */ |
bc258617 | 71 | if (CONTROL_CHAR(*--cp)) { |
bfe13c81 | 72 | backspace(); |
bc258617 | 73 | --cmd_col; |
bfe13c81 | 74 | } |
dce1e0a2 | 75 | |
bfe13c81 | 76 | backspace(); |
bc258617 KB |
77 | --cmd_col; |
78 | return(0); | |
bfe13c81 KB |
79 | } |
80 | ||
dce1e0a2 | 81 | /* set up the display to start a new multi-character command. */ |
bfe13c81 KB |
82 | start_mca(action, prompt) |
83 | int action; | |
84 | char *prompt; | |
85 | { | |
86 | lower_left(); | |
87 | clear_eol(); | |
88 | putstr(prompt); | |
89 | cmd_col = strlen(prompt); | |
90 | mca = action; | |
91 | } | |
92 | ||
93 | /* | |
dce1e0a2 | 94 | * process a single character of a multi-character command, such as |
bfe13c81 KB |
95 | * a number, or the pattern of a search command. |
96 | */ | |
bc258617 | 97 | static |
bfe13c81 KB |
98 | cmd_char(c) |
99 | int c; | |
100 | { | |
101 | if (c == erase_char) | |
bc258617 KB |
102 | return(cmd_erase()); |
103 | /* in this order, in case werase == erase_char */ | |
104 | if (c == werase_char) { | |
105 | if (cp > cmdbuf) { | |
106 | while (isspace(cp[-1]) && !cmd_erase()); | |
107 | while (!isspace(cp[-1]) && !cmd_erase()); | |
108 | while (isspace(cp[-1]) && !cmd_erase()); | |
109 | } | |
110 | return(cp == cmdbuf); | |
111 | } | |
112 | if (c == kill_char) { | |
113 | while (!cmd_erase()); | |
114 | return(1); | |
115 | } | |
116 | /* | |
117 | * No room in the command buffer, or no room on the screen; | |
118 | * {{ Could get fancy here; maybe shift the displayed line | |
119 | * and make room for more chars, like ksh. }} | |
120 | */ | |
121 | if (cp >= &cmdbuf[sizeof(cmdbuf)-1] || cmd_col >= sc_width-3) | |
bfe13c81 | 122 | bell(); |
bc258617 | 123 | else { |
bfe13c81 | 124 | *cp++ = c; |
bc258617 | 125 | if (CONTROL_CHAR(c)) { |
bfe13c81 KB |
126 | putchr('^'); |
127 | cmd_col++; | |
bc258617 | 128 | c = CARAT_CHAR(c); |
bfe13c81 KB |
129 | } |
130 | putchr(c); | |
131 | cmd_col++; | |
132 | } | |
bc258617 | 133 | return(0); |
bfe13c81 KB |
134 | } |
135 | ||
bfe13c81 KB |
136 | prompt() |
137 | { | |
dce1e0a2 | 138 | extern int linenums; |
7a3f847f | 139 | extern char *current_name, *firstsearch, *next_name; |
bc258617 KB |
140 | off_t len, pos, ch_length(), position(), forw_line(); |
141 | char pbuf[40]; | |
bfe13c81 KB |
142 | |
143 | /* | |
bc258617 KB |
144 | * if nothing is displayed yet, display starting from line 1; |
145 | * if search string provided, go there instead. | |
bfe13c81 | 146 | */ |
bc258617 KB |
147 | if (position(TOP) == NULL_POSITION) { |
148 | if (forw_line((off_t)0) == NULL_POSITION) | |
149 | return(0); | |
150 | if (!firstsearch || !search(1, firstsearch, 1, 1)) | |
151 | jump_back(1); | |
152 | } | |
bfe13c81 KB |
153 | else if (screen_trashed) |
154 | repaint(); | |
155 | ||
bc258617 KB |
156 | /* if no -e flag and we've hit EOF on the last file, quit. */ |
157 | if (!quit_at_eof && hit_eof && curr_ac + 1 >= ac) | |
bfe13c81 KB |
158 | quit(); |
159 | ||
bc258617 | 160 | /* select the proper prompt and display it. */ |
bfe13c81 KB |
161 | lower_left(); |
162 | clear_eol(); | |
bc258617 KB |
163 | if (longprompt) { |
164 | so_enter(); | |
165 | putstr(current_name); | |
166 | putstr(":"); | |
167 | if (!ispipe) { | |
168 | (void)sprintf(pbuf, " file %d/%d", curr_ac + 1, ac); | |
169 | putstr(pbuf); | |
170 | } | |
171 | if (linenums) { | |
6d713a99 | 172 | (void)sprintf(pbuf, " line %d", currline(BOTTOM)); |
bc258617 KB |
173 | putstr(pbuf); |
174 | } | |
6d713a99 | 175 | if ((pos = position(BOTTOM)) != NULL_POSITION) { |
bc258617 KB |
176 | (void)sprintf(pbuf, " byte %ld", pos); |
177 | putstr(pbuf); | |
178 | if (!ispipe && (len = ch_length())) { | |
6d713a99 KB |
179 | (void)sprintf(pbuf, "/%ld pct %ld%%", |
180 | len, ((100 * pos) / len)); | |
bc258617 KB |
181 | putstr(pbuf); |
182 | } | |
183 | } | |
184 | so_exit(); | |
185 | longprompt = 0; | |
186 | } | |
bc258617 | 187 | else { |
bfe13c81 | 188 | so_enter(); |
bc258617 KB |
189 | putstr(current_name); |
190 | if (hit_eof) | |
7a3f847f | 191 | if (next_name) { |
dce1e0a2 KB |
192 | (void)sprintf(pbuf, ": END (next file: %s)", |
193 | next_name); | |
7a3f847f KB |
194 | putstr(pbuf); |
195 | } | |
196 | else | |
197 | putstr(": END"); | |
e80c9812 KB |
198 | else if (!ispipe && |
199 | (pos = position(BOTTOM)) != NULL_POSITION && | |
200 | (len = ch_length())) { | |
201 | (void)sprintf(pbuf, " (%ld%%)", ((100 * pos) / len)); | |
bc258617 KB |
202 | putstr(pbuf); |
203 | } | |
bfe13c81 KB |
204 | so_exit(); |
205 | } | |
bc258617 | 206 | return(1); |
bfe13c81 KB |
207 | } |
208 | ||
dce1e0a2 | 209 | /* get command character. */ |
bc258617 | 210 | static |
bfe13c81 KB |
211 | getcc() |
212 | { | |
62b94f40 KB |
213 | extern int cmdstack; |
214 | int ch; | |
215 | ||
216 | /* left over from error() routine. */ | |
217 | if (cmdstack) { | |
218 | ch = cmdstack; | |
219 | cmdstack = NULL; | |
220 | return(ch); | |
221 | } | |
bc258617 | 222 | if (cp > cmdbuf && position(TOP) == NULL_POSITION) { |
bfe13c81 | 223 | /* |
bc258617 KB |
224 | * Command is incomplete, so try to complete it. |
225 | * There are only two cases: | |
226 | * 1. We have "/string" but no newline. Add the \n. | |
227 | * 2. We have a number but no command. Treat as #g. | |
228 | * (This is all pretty hokey.) | |
bfe13c81 | 229 | */ |
bc258617 KB |
230 | if (mca != A_DIGIT) |
231 | /* Not a number; must be search string */ | |
232 | return('\n'); | |
233 | else | |
234 | /* A number; append a 'g' */ | |
235 | return('g'); | |
bfe13c81 | 236 | } |
bc258617 | 237 | return(getchr()); |
bfe13c81 KB |
238 | } |
239 | ||
dce1e0a2 | 240 | /* execute a multicharacter command. */ |
bc258617 | 241 | static |
bfe13c81 KB |
242 | exec_mca() |
243 | { | |
bc258617 KB |
244 | extern int file; |
245 | extern char *tagfile; | |
bfe13c81 | 246 | register char *p; |
bc258617 | 247 | char *glob(); |
bfe13c81 KB |
248 | |
249 | *cp = '\0'; | |
dce1e0a2 | 250 | CMD_EXEC; |
bc258617 | 251 | switch (mca) { |
bfe13c81 | 252 | case A_F_SEARCH: |
bc258617 | 253 | (void)search(1, cmdbuf, number, wsearch); |
bfe13c81 KB |
254 | break; |
255 | case A_B_SEARCH: | |
bc258617 | 256 | (void)search(0, cmdbuf, number, wsearch); |
bfe13c81 KB |
257 | break; |
258 | case A_EXAMINE: | |
bc258617 KB |
259 | for (p = cmdbuf; isspace(*p); ++p); |
260 | (void)edit(glob(p)); | |
261 | break; | |
262 | case A_TAGFILE: | |
263 | for (p = cmdbuf; isspace(*p); ++p); | |
264 | findtag(p); | |
265 | if (tagfile == NULL) | |
266 | break; | |
267 | if (edit(tagfile)) | |
268 | (void)tagsearch(); | |
bfe13c81 | 269 | break; |
bfe13c81 KB |
270 | } |
271 | } | |
272 | ||
dce1e0a2 | 273 | /* add a character to a multi-character command. */ |
bc258617 | 274 | static |
bfe13c81 KB |
275 | mca_char(c) |
276 | int c; | |
277 | { | |
bc258617 KB |
278 | switch (mca) { |
279 | case 0: /* not in a multicharacter command. */ | |
280 | case A_PREFIX: /* in the prefix of a command. */ | |
281 | return(NO_MCA); | |
bfe13c81 KB |
282 | case A_DIGIT: |
283 | /* | |
284 | * Entering digits of a number. | |
285 | * Terminated by a non-digit. | |
286 | */ | |
bc258617 KB |
287 | if (!isascii(c) || !isdigit(c) && |
288 | c != erase_char && c != kill_char && c != werase_char) { | |
bfe13c81 KB |
289 | /* |
290 | * Not part of the number. | |
291 | * Treat as a normal command character. | |
292 | */ | |
dce1e0a2 KB |
293 | *cp = '\0'; |
294 | number = atoi(cmdbuf); | |
295 | CMD_RESET; | |
bfe13c81 | 296 | mca = 0; |
bc258617 | 297 | return(NO_MCA); |
bfe13c81 KB |
298 | } |
299 | break; | |
300 | } | |
301 | ||
302 | /* | |
303 | * Any other multicharacter command | |
304 | * is terminated by a newline. | |
305 | */ | |
bc258617 | 306 | if (c == '\n' || c == '\r') { |
bfe13c81 | 307 | exec_mca(); |
bc258617 | 308 | return(MCA_DONE); |
bfe13c81 | 309 | } |
dce1e0a2 KB |
310 | |
311 | /* append the char to the command buffer. */ | |
bfe13c81 | 312 | if (cmd_char(c)) |
bc258617 | 313 | return(MCA_DONE); |
dce1e0a2 | 314 | |
bc258617 | 315 | return(MCA_MORE); |
bfe13c81 KB |
316 | } |
317 | ||
318 | /* | |
319 | * Main command processor. | |
320 | * Accept and execute commands until a quit command, then return. | |
321 | */ | |
bfe13c81 KB |
322 | commands() |
323 | { | |
324 | register int c; | |
325 | register int action; | |
326 | ||
327 | last_mca = 0; | |
328 | scroll = (sc_height + 1) / 2; | |
329 | ||
bc258617 | 330 | for (;;) { |
bfe13c81 KB |
331 | mca = 0; |
332 | number = 0; | |
333 | ||
334 | /* | |
335 | * See if any signals need processing. | |
336 | */ | |
bc258617 | 337 | if (sigs) { |
bfe13c81 KB |
338 | psignals(); |
339 | if (quitting) | |
340 | quit(); | |
341 | } | |
bfe13c81 KB |
342 | /* |
343 | * Display prompt and accept a character. | |
344 | */ | |
dce1e0a2 | 345 | CMD_RESET; |
bc258617 KB |
346 | if (!prompt()) { |
347 | next_file(1); | |
348 | continue; | |
349 | } | |
bfe13c81 KB |
350 | noprefix(); |
351 | c = getcc(); | |
352 | ||
f5167107 | 353 | again: if (sigs) |
bfe13c81 KB |
354 | continue; |
355 | ||
356 | /* | |
357 | * If we are in a multicharacter command, call mca_char. | |
358 | * Otherwise we call cmd_decode to determine the | |
359 | * action to be performed. | |
360 | */ | |
361 | if (mca) | |
bc258617 | 362 | switch (mca_char(c)) { |
bfe13c81 KB |
363 | case MCA_MORE: |
364 | /* | |
365 | * Need another character. | |
366 | */ | |
367 | c = getcc(); | |
368 | goto again; | |
369 | case MCA_DONE: | |
370 | /* | |
371 | * Command has been handled by mca_char. | |
372 | * Start clean with a prompt. | |
373 | */ | |
374 | continue; | |
375 | case NO_MCA: | |
376 | /* | |
377 | * Not a multi-char command | |
378 | * (at least, not anymore). | |
379 | */ | |
380 | break; | |
381 | } | |
382 | ||
dce1e0a2 KB |
383 | /* decode the command character and decide what to do. */ |
384 | switch (action = cmd_decode(c)) { | |
385 | case A_DIGIT: /* first digit of a number */ | |
bfe13c81 KB |
386 | start_mca(A_DIGIT, ":"); |
387 | goto again; | |
dce1e0a2 KB |
388 | case A_F_SCREEN: /* forward one screen */ |
389 | CMD_EXEC; | |
390 | if (number <= 0 && (number = sc_window) <= 0) | |
bfe13c81 | 391 | number = sc_height - 1; |
bfe13c81 KB |
392 | forward(number, 1); |
393 | break; | |
dce1e0a2 KB |
394 | case A_B_SCREEN: /* backward one screen */ |
395 | CMD_EXEC; | |
396 | if (number <= 0 && (number = sc_window) <= 0) | |
bfe13c81 | 397 | number = sc_height - 1; |
bfe13c81 KB |
398 | backward(number, 1); |
399 | break; | |
dce1e0a2 KB |
400 | case A_F_LINE: /* forward N (default 1) line */ |
401 | CMD_EXEC; | |
402 | forward(number <= 0 ? 1 : number, 0); | |
bfe13c81 | 403 | break; |
dce1e0a2 KB |
404 | case A_B_LINE: /* backward N (default 1) line */ |
405 | CMD_EXEC; | |
406 | backward(number <= 0 ? 1 : number, 0); | |
bfe13c81 | 407 | break; |
dce1e0a2 KB |
408 | case A_F_SCROLL: /* forward N lines */ |
409 | CMD_EXEC; | |
bfe13c81 KB |
410 | if (number > 0) |
411 | scroll = number; | |
bfe13c81 KB |
412 | forward(scroll, 0); |
413 | break; | |
dce1e0a2 KB |
414 | case A_B_SCROLL: /* backward N lines */ |
415 | CMD_EXEC; | |
bfe13c81 KB |
416 | if (number > 0) |
417 | scroll = number; | |
bfe13c81 KB |
418 | backward(scroll, 0); |
419 | break; | |
dce1e0a2 KB |
420 | case A_FREPAINT: /* flush buffers and repaint */ |
421 | if (!ispipe) { | |
bfe13c81 KB |
422 | ch_init(0, 0); |
423 | clr_linenum(); | |
424 | } | |
dce1e0a2 | 425 | /* FALLTHROUGH */ |
e810d3c9 | 426 | case A_REPAINT: /* repaint the screen */ |
dce1e0a2 | 427 | CMD_EXEC; |
bfe13c81 KB |
428 | repaint(); |
429 | break; | |
dce1e0a2 KB |
430 | case A_GOLINE: /* go to line N, default 1 */ |
431 | CMD_EXEC; | |
bfe13c81 KB |
432 | if (number <= 0) |
433 | number = 1; | |
bfe13c81 KB |
434 | jump_back(number); |
435 | break; | |
dce1e0a2 KB |
436 | case A_PERCENT: /* go to percent of file */ |
437 | CMD_EXEC; | |
bfe13c81 KB |
438 | if (number < 0) |
439 | number = 0; | |
dce1e0a2 | 440 | else if (number > 100) |
bfe13c81 | 441 | number = 100; |
bfe13c81 KB |
442 | jump_percent(number); |
443 | break; | |
dce1e0a2 KB |
444 | case A_GOEND: /* go to line N, default end */ |
445 | CMD_EXEC; | |
bfe13c81 KB |
446 | if (number <= 0) |
447 | jump_forw(); | |
448 | else | |
449 | jump_back(number); | |
450 | break; | |
bc258617 KB |
451 | case A_STAT: /* print file name, etc. */ |
452 | longprompt = 1; | |
453 | continue; | |
bc258617 | 454 | case A_QUIT: /* exit */ |
bfe13c81 | 455 | quit(); |
dce1e0a2 | 456 | case A_F_SEARCH: /* search for a pattern */ |
bfe13c81 | 457 | case A_B_SEARCH: |
bfe13c81 KB |
458 | if (number <= 0) |
459 | number = 1; | |
460 | start_mca(action, (action==A_F_SEARCH) ? "/" : "?"); | |
461 | last_mca = mca; | |
462 | wsearch = 1; | |
463 | c = getcc(); | |
bc258617 | 464 | if (c == '!') { |
bfe13c81 | 465 | /* |
dce1e0a2 KB |
466 | * Invert the sense of the search; set wsearch |
467 | * to 0 and get a new character for the start | |
468 | * of the pattern. | |
bfe13c81 KB |
469 | */ |
470 | start_mca(action, | |
dce1e0a2 | 471 | (action == A_F_SEARCH) ? "!/" : "!?"); |
bfe13c81 KB |
472 | wsearch = 0; |
473 | c = getcc(); | |
474 | } | |
475 | goto again; | |
dce1e0a2 | 476 | case A_AGAIN_SEARCH: /* repeat previous search */ |
bfe13c81 KB |
477 | if (number <= 0) |
478 | number = 1; | |
479 | if (wsearch) | |
480 | start_mca(last_mca, | |
dce1e0a2 | 481 | (last_mca == A_F_SEARCH) ? "/" : "?"); |
bfe13c81 KB |
482 | else |
483 | start_mca(last_mca, | |
dce1e0a2 KB |
484 | (last_mca == A_F_SEARCH) ? "!/" : "!?"); |
485 | CMD_EXEC; | |
bc258617 KB |
486 | (void)search(mca == A_F_SEARCH, (char *)NULL, |
487 | number, wsearch); | |
bfe13c81 | 488 | break; |
dce1e0a2 | 489 | case A_HELP: /* help */ |
bfe13c81 KB |
490 | lower_left(); |
491 | clear_eol(); | |
492 | putstr("help"); | |
dce1e0a2 | 493 | CMD_EXEC; |
bfe13c81 KB |
494 | help(); |
495 | break; | |
dce1e0a2 KB |
496 | case A_TAGFILE: /* tag a new file */ |
497 | CMD_RESET; | |
bc258617 KB |
498 | start_mca(A_TAGFILE, "Tag: "); |
499 | c = getcc(); | |
500 | goto again; | |
dce1e0a2 KB |
501 | case A_FILE_LIST: /* show list of file names */ |
502 | CMD_EXEC; | |
e810d3c9 KB |
503 | showlist(); |
504 | repaint(); | |
505 | break; | |
dce1e0a2 KB |
506 | case A_EXAMINE: /* edit a new file */ |
507 | CMD_RESET; | |
bfe13c81 KB |
508 | start_mca(A_EXAMINE, "Examine: "); |
509 | c = getcc(); | |
510 | goto again; | |
dce1e0a2 KB |
511 | case A_VISUAL: /* invoke the editor */ |
512 | if (ispipe) { | |
bfe13c81 KB |
513 | error("Cannot edit standard input"); |
514 | break; | |
515 | } | |
dce1e0a2 | 516 | CMD_EXEC; |
1a2c8d49 | 517 | editfile(); |
bfe13c81 KB |
518 | ch_init(0, 0); |
519 | clr_linenum(); | |
520 | break; | |
dce1e0a2 | 521 | case A_NEXT_FILE: /* examine next file */ |
bfe13c81 KB |
522 | if (number <= 0) |
523 | number = 1; | |
524 | next_file(number); | |
525 | break; | |
dce1e0a2 | 526 | case A_PREV_FILE: /* examine previous file */ |
bfe13c81 KB |
527 | if (number <= 0) |
528 | number = 1; | |
529 | prev_file(number); | |
530 | break; | |
dce1e0a2 | 531 | case A_SETMARK: /* set a mark */ |
bfe13c81 KB |
532 | lower_left(); |
533 | clear_eol(); | |
534 | start_mca(A_SETMARK, "mark: "); | |
535 | c = getcc(); | |
536 | if (c == erase_char || c == kill_char) | |
537 | break; | |
538 | setmark(c); | |
539 | break; | |
dce1e0a2 | 540 | case A_GOMARK: /* go to mark */ |
bfe13c81 KB |
541 | lower_left(); |
542 | clear_eol(); | |
543 | start_mca(A_GOMARK, "goto mark: "); | |
544 | c = getcc(); | |
545 | if (c == erase_char || c == kill_char) | |
546 | break; | |
547 | gomark(c); | |
548 | break; | |
bfe13c81 KB |
549 | case A_PREFIX: |
550 | /* | |
551 | * The command is incomplete (more chars are needed). | |
dce1e0a2 KB |
552 | * Display the current char so the user knows what's |
553 | * going on and get another character. | |
bfe13c81 KB |
554 | */ |
555 | if (mca != A_PREFIX) | |
dce1e0a2 KB |
556 | start_mca(A_PREFIX, ""); |
557 | if (CONTROL_CHAR(c)) { | |
bfe13c81 | 558 | putchr('^'); |
bc258617 | 559 | c = CARAT_CHAR(c); |
bfe13c81 KB |
560 | } |
561 | putchr(c); | |
562 | c = getcc(); | |
563 | goto again; | |
bfe13c81 KB |
564 | default: |
565 | bell(); | |
566 | break; | |
567 | } | |
568 | } | |
569 | } | |
1a2c8d49 KB |
570 | |
571 | static | |
572 | editfile() | |
573 | { | |
bc258617 | 574 | extern char *current_file; |
1a2c8d49 KB |
575 | static int dolinenumber; |
576 | static char *editor; | |
577 | int c; | |
bc258617 | 578 | char buf[MAXPATHLEN * 2 + 20], *getenv(); |
1a2c8d49 KB |
579 | |
580 | if (editor == NULL) { | |
581 | editor = getenv("EDITOR"); | |
582 | /* pass the line number to vi */ | |
583 | if (editor == NULL || *editor == '\0') { | |
bc258617 KB |
584 | #define EDIT_PGM "/usr/ucb/vi" |
585 | editor = EDIT_PGM; | |
1a2c8d49 KB |
586 | dolinenumber = 1; |
587 | } | |
588 | else | |
589 | dolinenumber = 0; | |
590 | } | |
591 | if (dolinenumber && (c = currline(MIDDLE))) | |
592 | (void)sprintf(buf, "%s +%d %s", editor, c, current_file); | |
593 | else | |
594 | (void)sprintf(buf, "%s %s", editor, current_file); | |
595 | lsystem(buf); | |
596 | } | |
e810d3c9 KB |
597 | |
598 | static | |
599 | showlist() | |
600 | { | |
601 | extern int sc_width; | |
602 | extern char **av; | |
603 | register int indx, width; | |
604 | int len; | |
605 | char *p; | |
606 | ||
607 | if (ac <= 0) { | |
608 | error("No files provided as arguments."); | |
609 | return; | |
610 | } | |
611 | for (width = indx = 0; indx < ac;) { | |
612 | p = strcmp(av[indx], "-") ? av[indx] : "stdin"; | |
613 | len = strlen(p) + 1; | |
614 | if (curr_ac == indx) | |
615 | len += 2; | |
616 | if (width + len + 1 >= sc_width) { | |
617 | if (!width) { | |
618 | if (curr_ac == indx) | |
619 | putchr('['); | |
620 | putstr(p); | |
621 | if (curr_ac == indx) | |
622 | putchr(']'); | |
623 | ++indx; | |
624 | } | |
625 | width = 0; | |
626 | putchr('\n'); | |
627 | continue; | |
628 | } | |
629 | if (width) | |
630 | putchr(' '); | |
631 | if (curr_ac == indx) | |
632 | putchr('['); | |
633 | putstr(p); | |
634 | if (curr_ac == indx) | |
635 | putchr(']'); | |
636 | width += len; | |
637 | ++indx; | |
638 | } | |
639 | putchr('\n'); | |
640 | error((char *)NULL); | |
641 | } |