Commit | Line | Data |
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d0aeaf5a DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
0c5f72fb KB |
3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
acfc7e9b KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
d0aeaf5a DF |
16 | */ |
17 | ||
acfc7e9b | 18 | #ifndef lint |
e62a1467 | 19 | static char sccsid[] = "@(#)cmd3.c 5.22 (Berkeley) %G%"; |
acfc7e9b | 20 | #endif /* not lint */ |
ca6bb034 KS |
21 | |
22 | #include "rcv.h" | |
ca6bb034 KS |
23 | |
24 | /* | |
25 | * Mail -- a mail program | |
26 | * | |
27 | * Still more user commands. | |
28 | */ | |
29 | ||
ca6bb034 KS |
30 | /* |
31 | * Process a shell escape by saving signals, ignoring signals, | |
32 | * and forking a sh -c | |
33 | */ | |
ca6bb034 KS |
34 | shell(str) |
35 | char *str; | |
36 | { | |
e62a1467 | 37 | sig_t sigint = signal(SIGINT, SIG_IGN); |
d33aa50d | 38 | char *shell; |
e8adee6e | 39 | char cmd[BUFSIZ]; |
ca6bb034 | 40 | |
d33aa50d | 41 | (void) strcpy(cmd, str); |
e8adee6e | 42 | if (bangexp(cmd) < 0) |
2ee3bce2 | 43 | return 1; |
d33aa50d | 44 | if ((shell = value("SHELL")) == NOSTR) |
435e8dff | 45 | shell = _PATH_CSHELL; |
d33aa50d EW |
46 | (void) run_command(shell, 0, -1, -1, "-c", cmd, NOSTR); |
47 | (void) signal(SIGINT, sigint); | |
ca6bb034 | 48 | printf("!\n"); |
d33aa50d | 49 | return 0; |
ca6bb034 KS |
50 | } |
51 | ||
52 | /* | |
53 | * Fork an interactive shell. | |
54 | */ | |
828615a1 | 55 | /*ARGSUSED*/ |
ca6bb034 KS |
56 | dosh(str) |
57 | char *str; | |
58 | { | |
e62a1467 | 59 | sig_t sigint = signal(SIGINT, SIG_IGN); |
d33aa50d | 60 | char *shell; |
828615a1 | 61 | |
d33aa50d | 62 | if ((shell = value("SHELL")) == NOSTR) |
435e8dff | 63 | shell = _PATH_CSHELL; |
d33aa50d EW |
64 | (void) run_command(shell, 0, -1, -1, NOSTR); |
65 | (void) signal(SIGINT, sigint); | |
ca6bb034 | 66 | putchar('\n'); |
d33aa50d | 67 | return 0; |
ca6bb034 KS |
68 | } |
69 | ||
e8adee6e KS |
70 | /* |
71 | * Expand the shell escape by expanding unescaped !'s into the | |
72 | * last issued command where possible. | |
73 | */ | |
74 | ||
75 | char lastbang[128]; | |
76 | ||
77 | bangexp(str) | |
78 | char *str; | |
79 | { | |
80 | char bangbuf[BUFSIZ]; | |
81 | register char *cp, *cp2; | |
82 | register int n; | |
83 | int changed = 0; | |
84 | ||
85 | cp = str; | |
86 | cp2 = bangbuf; | |
87 | n = BUFSIZ; | |
88 | while (*cp) { | |
89 | if (*cp == '!') { | |
90 | if (n < strlen(lastbang)) { | |
91 | overf: | |
92 | printf("Command buffer overflow\n"); | |
93 | return(-1); | |
94 | } | |
95 | changed++; | |
96 | strcpy(cp2, lastbang); | |
97 | cp2 += strlen(lastbang); | |
98 | n -= strlen(lastbang); | |
99 | cp++; | |
100 | continue; | |
101 | } | |
102 | if (*cp == '\\' && cp[1] == '!') { | |
103 | if (--n <= 1) | |
104 | goto overf; | |
105 | *cp2++ = '!'; | |
106 | cp += 2; | |
107 | changed++; | |
108 | } | |
109 | if (--n <= 1) | |
110 | goto overf; | |
111 | *cp2++ = *cp++; | |
112 | } | |
113 | *cp2 = 0; | |
114 | if (changed) { | |
115 | printf("!%s\n", bangbuf); | |
116 | fflush(stdout); | |
117 | } | |
118 | strcpy(str, bangbuf); | |
119 | strncpy(lastbang, bangbuf, 128); | |
120 | lastbang[127] = 0; | |
121 | return(0); | |
122 | } | |
123 | ||
ca6bb034 KS |
124 | /* |
125 | * Print out a nice help message from some file or another. | |
126 | */ | |
127 | ||
128 | help() | |
129 | { | |
130 | register c; | |
131 | register FILE *f; | |
132 | ||
435e8dff KB |
133 | if ((f = fopen(_PATH_HELP, "r")) == NULL) { |
134 | perror(_PATH_HELP); | |
ca6bb034 KS |
135 | return(1); |
136 | } | |
137 | while ((c = getc(f)) != EOF) | |
138 | putchar(c); | |
139 | fclose(f); | |
140 | return(0); | |
141 | } | |
142 | ||
143 | /* | |
144 | * Change user's working directory. | |
145 | */ | |
23464f86 EW |
146 | schdir(arglist) |
147 | char **arglist; | |
ca6bb034 | 148 | { |
23464f86 | 149 | char *cp; |
ca6bb034 | 150 | |
23464f86 | 151 | if (*arglist == NOSTR) |
ca6bb034 KS |
152 | cp = homedir; |
153 | else | |
23464f86 | 154 | if ((cp = expand(*arglist)) == NOSTR) |
ca6bb034 KS |
155 | return(1); |
156 | if (chdir(cp) < 0) { | |
157 | perror(cp); | |
158 | return(1); | |
159 | } | |
23464f86 | 160 | return 0; |
ca6bb034 KS |
161 | } |
162 | ||
397029be S |
163 | respond(msgvec) |
164 | int *msgvec; | |
165 | { | |
166 | if (value("Replyall") == NOSTR) | |
167 | return (_respond(msgvec)); | |
168 | else | |
169 | return (_Respond(msgvec)); | |
170 | } | |
171 | ||
ca6bb034 KS |
172 | /* |
173 | * Reply to a list of messages. Extract each name from the | |
174 | * message header and send them off to mail1() | |
175 | */ | |
397029be | 176 | _respond(msgvec) |
ca6bb034 KS |
177 | int *msgvec; |
178 | { | |
179 | struct message *mp; | |
828615a1 | 180 | char *cp, *rcv, *replyto; |
3d6f01e5 | 181 | char **ap; |
ca6bb034 KS |
182 | struct name *np; |
183 | struct header head; | |
ca6bb034 KS |
184 | |
185 | if (msgvec[1] != 0) { | |
186 | printf("Sorry, can't reply to multiple messages at once\n"); | |
187 | return(1); | |
188 | } | |
189 | mp = &message[msgvec[0] - 1]; | |
8225e7c3 | 190 | touch(mp); |
ca6bb034 | 191 | dot = mp; |
3d6f01e5 EW |
192 | if ((rcv = skin(hfield("from", mp))) == NOSTR) |
193 | rcv = skin(nameof(mp, 1)); | |
194 | if ((replyto = skin(hfield("reply-to", mp))) != NOSTR) | |
195 | np = extract(replyto, GTO); | |
196 | else if ((cp = skin(hfield("to", mp))) != NOSTR) | |
197 | np = extract(cp, GTO); | |
198 | else | |
199 | np = NIL; | |
200 | np = elide(np); | |
1c04ff22 KS |
201 | /* |
202 | * Delete my name from the reply list, | |
203 | * and with it, all my alternate names. | |
204 | */ | |
470c33f3 | 205 | np = delname(np, myname); |
7949d400 | 206 | if (altnames) |
1c04ff22 | 207 | for (ap = altnames; *ap; ap++) |
470c33f3 | 208 | np = delname(np, *ap); |
3d6f01e5 EW |
209 | if (np != NIL && replyto == NOSTR) |
210 | np = cat(np, extract(rcv, GTO)); | |
211 | else if (np == NIL) { | |
212 | if (replyto != NOSTR) | |
52984be9 | 213 | printf("Empty reply-to field -- replying to author\n"); |
3d6f01e5 | 214 | np = extract(rcv, GTO); |
52984be9 | 215 | } |
3d6f01e5 EW |
216 | head.h_to = np; |
217 | if ((head.h_subject = hfield("subject", mp)) == NOSTR) | |
ca6bb034 | 218 | head.h_subject = hfield("subj", mp); |
fc8872bb | 219 | head.h_subject = reedit(head.h_subject); |
3d6f01e5 EW |
220 | if (replyto == NOSTR && (cp = skin(hfield("cc", mp))) != NOSTR) { |
221 | np = elide(extract(cp, GCC)); | |
470c33f3 | 222 | np = delname(np, myname); |
3d6f01e5 EW |
223 | if (altnames != 0) |
224 | for (ap = altnames; *ap; ap++) | |
470c33f3 | 225 | np = delname(np, *ap); |
3d6f01e5 EW |
226 | head.h_cc = np; |
227 | } else | |
228 | head.h_cc = NIL; | |
229 | head.h_bcc = NIL; | |
230 | head.h_smopts = NIL; | |
231 | mail1(&head, 1); | |
ca6bb034 KS |
232 | return(0); |
233 | } | |
234 | ||
fc8872bb KS |
235 | /* |
236 | * Modify the subject we are replying to to begin with Re: if | |
237 | * it does not already. | |
238 | */ | |
fc8872bb KS |
239 | char * |
240 | reedit(subj) | |
3d6f01e5 | 241 | register char *subj; |
fc8872bb | 242 | { |
3d6f01e5 | 243 | char *newsubj; |
fc8872bb KS |
244 | |
245 | if (subj == NOSTR) | |
3d6f01e5 EW |
246 | return NOSTR; |
247 | if ((subj[0] == 'r' || subj[0] == 'R') && | |
248 | (subj[1] == 'e' || subj[1] == 'E') && | |
249 | subj[2] == ':') | |
250 | return subj; | |
251 | newsubj = salloc(strlen(subj) + 5); | |
252 | strcpy(newsubj, "Re: "); | |
c6bb00f3 | 253 | strcpy(newsubj + 4, subj); |
3d6f01e5 | 254 | return newsubj; |
fc8872bb KS |
255 | } |
256 | ||
ca6bb034 KS |
257 | /* |
258 | * Preserve the named messages, so that they will be sent | |
259 | * back to the system mailbox. | |
260 | */ | |
261 | ||
262 | preserve(msgvec) | |
263 | int *msgvec; | |
264 | { | |
265 | register struct message *mp; | |
266 | register int *ip, mesg; | |
267 | ||
268 | if (edit) { | |
269 | printf("Cannot \"preserve\" in edit mode\n"); | |
270 | return(1); | |
271 | } | |
272 | for (ip = msgvec; *ip != NULL; ip++) { | |
273 | mesg = *ip; | |
274 | mp = &message[mesg-1]; | |
275 | mp->m_flag |= MPRESERVE; | |
8fe58892 | 276 | mp->m_flag &= ~MBOX; |
ca6bb034 KS |
277 | dot = mp; |
278 | } | |
279 | return(0); | |
280 | } | |
281 | ||
397029be S |
282 | /* |
283 | * Mark all given messages as unread. | |
284 | */ | |
285 | unread(msgvec) | |
286 | int msgvec[]; | |
287 | { | |
288 | register int *ip; | |
289 | ||
290 | for (ip = msgvec; *ip != NULL; ip++) { | |
291 | dot = &message[*ip-1]; | |
292 | dot->m_flag &= ~(MREAD|MTOUCH); | |
293 | dot->m_flag |= MSTATUS; | |
294 | } | |
295 | return(0); | |
296 | } | |
297 | ||
ca6bb034 KS |
298 | /* |
299 | * Print the size of each message. | |
300 | */ | |
301 | ||
302 | messize(msgvec) | |
303 | int *msgvec; | |
304 | { | |
305 | register struct message *mp; | |
306 | register int *ip, mesg; | |
307 | ||
308 | for (ip = msgvec; *ip != NULL; ip++) { | |
309 | mesg = *ip; | |
310 | mp = &message[mesg-1]; | |
397029be | 311 | printf("%d: %d/%ld\n", mesg, mp->m_lines, mp->m_size); |
ca6bb034 KS |
312 | } |
313 | return(0); | |
314 | } | |
315 | ||
316 | /* | |
317 | * Quit quickly. If we are sourcing, just pop the input level | |
318 | * by returning an error. | |
319 | */ | |
320 | ||
321 | rexit(e) | |
322 | { | |
323 | if (sourcing) | |
324 | return(1); | |
325 | exit(e); | |
828615a1 | 326 | /*NOTREACHED*/ |
ca6bb034 KS |
327 | } |
328 | ||
329 | /* | |
330 | * Set or display a variable value. Syntax is similar to that | |
331 | * of csh. | |
332 | */ | |
333 | ||
334 | set(arglist) | |
335 | char **arglist; | |
336 | { | |
337 | register struct var *vp; | |
338 | register char *cp, *cp2; | |
339 | char varbuf[BUFSIZ], **ap, **p; | |
340 | int errs, h, s; | |
341 | ||
470c33f3 | 342 | if (*arglist == NOSTR) { |
ca6bb034 KS |
343 | for (h = 0, s = 1; h < HSHSIZE; h++) |
344 | for (vp = variables[h]; vp != NOVAR; vp = vp->v_link) | |
345 | s++; | |
346 | ap = (char **) salloc(s * sizeof *ap); | |
347 | for (h = 0, p = ap; h < HSHSIZE; h++) | |
348 | for (vp = variables[h]; vp != NOVAR; vp = vp->v_link) | |
349 | *p++ = vp->v_name; | |
350 | *p = NOSTR; | |
351 | sort(ap); | |
352 | for (p = ap; *p != NOSTR; p++) | |
353 | printf("%s\t%s\n", *p, value(*p)); | |
354 | return(0); | |
355 | } | |
356 | errs = 0; | |
357 | for (ap = arglist; *ap != NOSTR; ap++) { | |
358 | cp = *ap; | |
359 | cp2 = varbuf; | |
360 | while (*cp != '=' && *cp != '\0') | |
361 | *cp2++ = *cp++; | |
362 | *cp2 = '\0'; | |
363 | if (*cp == '\0') | |
364 | cp = ""; | |
365 | else | |
366 | cp++; | |
367 | if (equal(varbuf, "")) { | |
368 | printf("Non-null variable name required\n"); | |
369 | errs++; | |
370 | continue; | |
371 | } | |
372 | assign(varbuf, cp); | |
373 | } | |
374 | return(errs); | |
375 | } | |
376 | ||
377 | /* | |
378 | * Unset a bunch of variable values. | |
379 | */ | |
380 | ||
381 | unset(arglist) | |
382 | char **arglist; | |
383 | { | |
384 | register struct var *vp, *vp2; | |
ca6bb034 KS |
385 | int errs, h; |
386 | char **ap; | |
387 | ||
388 | errs = 0; | |
389 | for (ap = arglist; *ap != NOSTR; ap++) { | |
390 | if ((vp2 = lookup(*ap)) == NOVAR) { | |
391 | if (!sourcing) { | |
392 | printf("\"%s\": undefined variable\n", *ap); | |
393 | errs++; | |
394 | } | |
395 | continue; | |
396 | } | |
397 | h = hash(*ap); | |
398 | if (vp2 == variables[h]) { | |
399 | variables[h] = variables[h]->v_link; | |
400 | vfree(vp2->v_name); | |
401 | vfree(vp2->v_value); | |
828615a1 | 402 | cfree((char *)vp2); |
ca6bb034 KS |
403 | continue; |
404 | } | |
405 | for (vp = variables[h]; vp->v_link != vp2; vp = vp->v_link) | |
406 | ; | |
407 | vp->v_link = vp2->v_link; | |
408 | vfree(vp2->v_name); | |
409 | vfree(vp2->v_value); | |
828615a1 | 410 | cfree((char *) vp2); |
ca6bb034 KS |
411 | } |
412 | return(errs); | |
413 | } | |
414 | ||
415 | /* | |
416 | * Put add users to a group. | |
417 | */ | |
418 | ||
419 | group(argv) | |
420 | char **argv; | |
421 | { | |
422 | register struct grouphead *gh; | |
423 | register struct group *gp; | |
424 | register int h; | |
425 | int s; | |
426 | char **ap, *gname, **p; | |
427 | ||
470c33f3 | 428 | if (*argv == NOSTR) { |
ca6bb034 KS |
429 | for (h = 0, s = 1; h < HSHSIZE; h++) |
430 | for (gh = groups[h]; gh != NOGRP; gh = gh->g_link) | |
431 | s++; | |
432 | ap = (char **) salloc(s * sizeof *ap); | |
433 | for (h = 0, p = ap; h < HSHSIZE; h++) | |
434 | for (gh = groups[h]; gh != NOGRP; gh = gh->g_link) | |
435 | *p++ = gh->g_name; | |
436 | *p = NOSTR; | |
437 | sort(ap); | |
438 | for (p = ap; *p != NOSTR; p++) | |
439 | printgroup(*p); | |
440 | return(0); | |
441 | } | |
470c33f3 | 442 | if (argv[1] == NOSTR) { |
ca6bb034 KS |
443 | printgroup(*argv); |
444 | return(0); | |
445 | } | |
446 | gname = *argv; | |
447 | h = hash(gname); | |
448 | if ((gh = findgroup(gname)) == NOGRP) { | |
449 | gh = (struct grouphead *) calloc(sizeof *gh, 1); | |
450 | gh->g_name = vcopy(gname); | |
451 | gh->g_list = NOGE; | |
452 | gh->g_link = groups[h]; | |
453 | groups[h] = gh; | |
454 | } | |
455 | ||
456 | /* | |
457 | * Insert names from the command list into the group. | |
458 | * Who cares if there are duplicates? They get tossed | |
459 | * later anyway. | |
460 | */ | |
461 | ||
462 | for (ap = argv+1; *ap != NOSTR; ap++) { | |
463 | gp = (struct group *) calloc(sizeof *gp, 1); | |
464 | gp->ge_name = vcopy(*ap); | |
465 | gp->ge_link = gh->g_list; | |
466 | gh->g_list = gp; | |
467 | } | |
468 | return(0); | |
469 | } | |
470 | ||
471 | /* | |
472 | * Sort the passed string vecotor into ascending dictionary | |
473 | * order. | |
474 | */ | |
475 | ||
476 | sort(list) | |
477 | char **list; | |
478 | { | |
479 | register char **ap; | |
480 | int diction(); | |
481 | ||
482 | for (ap = list; *ap != NOSTR; ap++) | |
483 | ; | |
484 | if (ap-list < 2) | |
485 | return; | |
828615a1 | 486 | qsort((char *)list, ap-list, sizeof *list, diction); |
ca6bb034 KS |
487 | } |
488 | ||
489 | /* | |
490 | * Do a dictionary order comparison of the arguments from | |
491 | * qsort. | |
492 | */ | |
493 | ||
494 | diction(a, b) | |
495 | register char **a, **b; | |
496 | { | |
497 | return(strcmp(*a, *b)); | |
498 | } | |
499 | ||
500 | /* | |
501 | * The do nothing command for comments. | |
502 | */ | |
503 | ||
828615a1 | 504 | /*ARGSUSED*/ |
ca6bb034 KS |
505 | null(e) |
506 | { | |
828615a1 | 507 | return 0; |
ca6bb034 KS |
508 | } |
509 | ||
510 | /* | |
2ee3bce2 EW |
511 | * Change to another file. With no argument, print information about |
512 | * the current file. | |
ca6bb034 | 513 | */ |
1031a04a | 514 | file(argv) |
2a0f6531 | 515 | register char **argv; |
ca6bb034 | 516 | { |
ca6bb034 | 517 | |
1031a04a | 518 | if (argv[0] == NOSTR) { |
890194fb | 519 | newfileinfo(); |
2a0f6531 | 520 | return 0; |
1031a04a | 521 | } |
8421b6a6 | 522 | if (setfile(*argv) < 0) |
2ee3bce2 | 523 | return 1; |
4d20fb09 | 524 | announce(); |
828615a1 | 525 | return 0; |
1031a04a KS |
526 | } |
527 | ||
ca6bb034 KS |
528 | /* |
529 | * Expand file names like echo | |
530 | */ | |
ca6bb034 KS |
531 | echo(argv) |
532 | char **argv; | |
533 | { | |
534 | register char **ap; | |
535 | register char *cp; | |
536 | ||
537 | for (ap = argv; *ap != NOSTR; ap++) { | |
538 | cp = *ap; | |
790344bc EW |
539 | if ((cp = expand(cp)) != NOSTR) { |
540 | if (ap != argv) | |
541 | putchar(' '); | |
542 | printf("%s", cp); | |
543 | } | |
ca6bb034 | 544 | } |
790344bc | 545 | putchar('\n'); |
3d6f01e5 | 546 | return 0; |
ca6bb034 KS |
547 | } |
548 | ||
397029be S |
549 | Respond(msgvec) |
550 | int *msgvec; | |
551 | { | |
552 | if (value("Replyall") == NOSTR) | |
553 | return (_Respond(msgvec)); | |
554 | else | |
555 | return (_respond(msgvec)); | |
556 | } | |
557 | ||
ca6bb034 KS |
558 | /* |
559 | * Reply to a series of messages by simply mailing to the senders | |
560 | * and not messing around with the To: and Cc: lists as in normal | |
561 | * reply. | |
562 | */ | |
397029be | 563 | _Respond(msgvec) |
ca6bb034 KS |
564 | int msgvec[]; |
565 | { | |
566 | struct header head; | |
567 | struct message *mp; | |
3d6f01e5 EW |
568 | register int *ap; |
569 | register char *cp; | |
ca6bb034 | 570 | |
3d6f01e5 | 571 | head.h_to = NIL; |
ca6bb034 KS |
572 | for (ap = msgvec; *ap != 0; ap++) { |
573 | mp = &message[*ap - 1]; | |
8225e7c3 | 574 | touch(mp); |
3d6f01e5 EW |
575 | dot = mp; |
576 | if ((cp = skin(hfield("from", mp))) == NOSTR) | |
577 | cp = skin(nameof(mp, 2)); | |
578 | head.h_to = cat(head.h_to, extract(cp, GTO)); | |
ca6bb034 | 579 | } |
3d6f01e5 EW |
580 | if (head.h_to == NIL) |
581 | return 0; | |
ca6bb034 | 582 | mp = &message[msgvec[0] - 1]; |
3d6f01e5 EW |
583 | if ((head.h_subject = hfield("subject", mp)) == NOSTR) |
584 | head.h_subject = hfield("subj", mp); | |
585 | head.h_subject = reedit(head.h_subject); | |
586 | head.h_cc = NIL; | |
587 | head.h_bcc = NIL; | |
588 | head.h_smopts = NIL; | |
589 | mail1(&head, 1); | |
590 | return 0; | |
ca6bb034 | 591 | } |
d344b00c KS |
592 | |
593 | /* | |
594 | * Conditional commands. These allow one to parameterize one's | |
595 | * .mailrc and do some things if sending, others if receiving. | |
596 | */ | |
597 | ||
598 | ifcmd(argv) | |
599 | char **argv; | |
600 | { | |
601 | register char *cp; | |
602 | ||
603 | if (cond != CANY) { | |
604 | printf("Illegal nested \"if\"\n"); | |
605 | return(1); | |
606 | } | |
607 | cond = CANY; | |
608 | cp = argv[0]; | |
609 | switch (*cp) { | |
610 | case 'r': case 'R': | |
611 | cond = CRCV; | |
612 | break; | |
613 | ||
614 | case 's': case 'S': | |
615 | cond = CSEND; | |
616 | break; | |
617 | ||
618 | default: | |
619 | printf("Unrecognized if-keyword: \"%s\"\n", cp); | |
620 | return(1); | |
621 | } | |
622 | return(0); | |
623 | } | |
624 | ||
625 | /* | |
626 | * Implement 'else'. This is pretty simple -- we just | |
627 | * flip over the conditional flag. | |
628 | */ | |
629 | ||
630 | elsecmd() | |
631 | { | |
632 | ||
633 | switch (cond) { | |
634 | case CANY: | |
635 | printf("\"Else\" without matching \"if\"\n"); | |
636 | return(1); | |
637 | ||
638 | case CSEND: | |
639 | cond = CRCV; | |
640 | break; | |
641 | ||
642 | case CRCV: | |
643 | cond = CSEND; | |
644 | break; | |
645 | ||
646 | default: | |
647 | printf("Mail's idea of conditions is screwed up\n"); | |
648 | cond = CANY; | |
649 | break; | |
650 | } | |
651 | return(0); | |
652 | } | |
653 | ||
654 | /* | |
655 | * End of if statement. Just set cond back to anything. | |
656 | */ | |
657 | ||
658 | endifcmd() | |
659 | { | |
660 | ||
661 | if (cond == CANY) { | |
662 | printf("\"Endif\" without matching \"if\"\n"); | |
663 | return(1); | |
664 | } | |
665 | cond = CANY; | |
666 | return(0); | |
667 | } | |
1c04ff22 KS |
668 | |
669 | /* | |
670 | * Set the list of alternate names. | |
671 | */ | |
672 | alternates(namelist) | |
673 | char **namelist; | |
674 | { | |
675 | register int c; | |
676 | register char **ap, **ap2, *cp; | |
677 | ||
678 | c = argcount(namelist) + 1; | |
679 | if (c == 1) { | |
680 | if (altnames == 0) | |
681 | return(0); | |
682 | for (ap = altnames; *ap; ap++) | |
683 | printf("%s ", *ap); | |
684 | printf("\n"); | |
685 | return(0); | |
686 | } | |
687 | if (altnames != 0) | |
688 | cfree((char *) altnames); | |
828615a1 | 689 | altnames = (char **) calloc((unsigned) c, sizeof (char *)); |
1c04ff22 | 690 | for (ap = namelist, ap2 = altnames; *ap; ap++, ap2++) { |
828615a1 | 691 | cp = (char *) calloc((unsigned) strlen(*ap) + 1, sizeof (char)); |
1c04ff22 KS |
692 | strcpy(cp, *ap); |
693 | *ap2 = cp; | |
694 | } | |
695 | *ap2 = 0; | |
696 | return(0); | |
697 | } |