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docs: mention --update and --encrypt in smbget manpage.
[Samba.git] / ctdb / lib / popt / popthelp.c
blob7ae3de7fb554bee246c770815898b0ca4de73adb
1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
2
3 /*@-type@*/
4 /** \ingroup popt
5 * \file popt/popthelp.c
6 */
7
8 /* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
9 file accompanying popt source distributions, available from
10 ftp://ftp.rpm.org/pub/rpm/dist. */
11
12 #include "system.h"
13 #include "poptint.h"
14
15 /**
16 * Display arguments.
17 * @param con context
18 * @param foo (unused)
19 * @param key option(s)
20 * @param arg (unused)
21 * @param data (unused)
22 */
23 static void displayArgs(poptContext con,
24 /*@unused@*/ enum poptCallbackReason foo,
25 struct poptOption * key,
26 /*@unused@*/ const char * arg, /*@unused@*/ void * data)
27 /*@globals fileSystem@*/
28 /*@modifies fileSystem@*/
29 {
30 if (key->shortName == '?')
31 poptPrintHelp(con, stdout, 0);
32 else
33 poptPrintUsage(con, stdout, 0);
34 exit(0);
35 }
36
37 #ifdef NOTYET
38 /*@unchecked@*/
39 static int show_option_defaults = 0;
40 #endif
41
42 /**
43 * Empty table marker to enable displaying popt alias/exec options.
44 */
45 /*@observer@*/ /*@unchecked@*/
46 struct poptOption poptAliasOptions[] = {
47 POPT_TABLEEND
48 };
49
50 /**
51 * Auto help table options.
52 */
53 /*@-castfcnptr@*/
54 /*@observer@*/ /*@unchecked@*/
55 struct poptOption poptHelpOptions[] = {
56 { NULL, '\0', POPT_ARG_CALLBACK, (void *)&displayArgs, '\0', NULL, NULL },
57 { "help", '?', 0, NULL, '?', N_("Show this help message"), NULL },
58 { "usage", '\0', 0, NULL, 'u', N_("Display brief usage message"), NULL },
59 #ifdef NOTYET
60 { "defaults", '\0', POPT_ARG_NONE, &show_option_defaults, 0,
61 N_("Display option defaults in message"), NULL },
62 #endif
63 POPT_TABLEEND
64 } ;
65 /*@=castfcnptr@*/
66
67 /**
68 * @param table option(s)
69 */
70 /*@observer@*/ /*@null@*/ static const char *const
71 getTableTranslationDomain(/*@null@*/ const struct poptOption *table)
72 /*@*/
73 {
74 const struct poptOption *opt;
75
76 if (table != NULL)
77 for (opt = table; opt->longName || opt->shortName || opt->arg; opt++) {
78 if (opt->argInfo == POPT_ARG_INTL_DOMAIN)
79 return opt->arg;
80 }
81 return NULL;
82 }
83
84 /**
85 * @param opt option(s)
86 * @param translation_domain translation domain
87 */
88 /*@observer@*/ /*@null@*/ static const char *const
89 getArgDescrip(const struct poptOption * opt,
90 /*@-paramuse@*/ /* FIX: i18n macros disabled with lclint */
91 /*@null@*/ const char * translation_domain)
92 /*@=paramuse@*/
93 /*@*/
94 {
95 if (!(opt->argInfo & POPT_ARG_MASK)) return NULL;
96
97 if (opt == (poptHelpOptions + 1) || opt == (poptHelpOptions + 2))
98 if (opt->argDescrip) return POPT_(opt->argDescrip);
99
100 if (opt->argDescrip) return D_(translation_domain, opt->argDescrip);
101
102 switch (opt->argInfo & POPT_ARG_MASK) {
103 case POPT_ARG_NONE: return POPT_("NONE");
104 #ifdef DYING
105 case POPT_ARG_VAL: return POPT_("VAL");
106 #else
107 case POPT_ARG_VAL: return NULL;
108 #endif
109 case POPT_ARG_INT: return POPT_("INT");
110 case POPT_ARG_LONG: return POPT_("LONG");
111 case POPT_ARG_STRING: return POPT_("STRING");
112 case POPT_ARG_FLOAT: return POPT_("FLOAT");
113 case POPT_ARG_DOUBLE: return POPT_("DOUBLE");
114 default: return POPT_("ARG");
115 }
116 }
117
118 /**
119 * Display default value for an option.
120 * @param lineLength
121 * @param opt option(s)
122 * @param translation_domain translation domain
123 * @return
124 */
125 static /*@only@*/ /*@null@*/ char *
126 singleOptionDefaultValue(int lineLength,
127 const struct poptOption * opt,
128 /*@-paramuse@*/ /* FIX: i18n macros disabled with lclint */
129 /*@null@*/ const char * translation_domain)
130 /*@=paramuse@*/
131 /*@*/
132 {
133 const char * defstr = D_(translation_domain, "default");
134 char * le = malloc(4*lineLength + 1);
135 char * l = le;
136
137 if (le == NULL) return NULL; /* XXX can't happen */
138 /*@-boundswrite@*/
139 *le = '\0';
140 *le++ = '(';
141 strcpy(le, defstr); le += strlen(le);
142 *le++ = ':';
143 *le++ = ' ';
144 if (opt->arg) /* XXX programmer error */
145 switch (opt->argInfo & POPT_ARG_MASK) {
146 case POPT_ARG_VAL:
147 case POPT_ARG_INT:
148 { long aLong = *((int *)opt->arg);
149 le += sprintf(le, "%ld", aLong);
150 } break;
151 case POPT_ARG_LONG:
152 { long aLong = *((long *)opt->arg);
153 le += sprintf(le, "%ld", aLong);
154 } break;
155 case POPT_ARG_FLOAT:
156 { double aDouble = *((float *)opt->arg);
157 le += sprintf(le, "%g", aDouble);
158 } break;
159 case POPT_ARG_DOUBLE:
160 { double aDouble = *((double *)opt->arg);
161 le += sprintf(le, "%g", aDouble);
162 } break;
163 case POPT_ARG_STRING:
164 { const char * s = *(const char **)opt->arg;
165 if (s == NULL) {
166 strcpy(le, "null"); le += strlen(le);
167 } else {
168 size_t slen = 4*lineLength - (le - l) - sizeof("\"...\")");
169 *le++ = '"';
170 strncpy(le, s, slen); le[slen] = '\0'; le += strlen(le);
171 if (slen < strlen(s)) {
172 strcpy(le, "..."); le += strlen(le);
173 }
174 *le++ = '"';
175 }
176 } break;
177 case POPT_ARG_NONE:
178 default:
179 l = _free(l);
180 return NULL;
181 /*@notreached@*/ break;
182 }
183 *le++ = ')';
184 *le = '\0';
185 /*@=boundswrite@*/
186
187 return l;
188 }
189
190 /**
191 * Display help text for an option.
192 * @param fp output file handle
193 * @param maxLeftCol
194 * @param opt option(s)
195 * @param translation_domain translation domain
196 */
197 static void singleOptionHelp(FILE * fp, int maxLeftCol,
198 const struct poptOption * opt,
199 /*@null@*/ const char * translation_domain)
200 /*@globals fileSystem @*/
201 /*@modifies *fp, fileSystem @*/
202 {
203 int indentLength = maxLeftCol + 5;
204 int lineLength = 79 - indentLength;
205 const char * help = D_(translation_domain, opt->descrip);
206 const char * argDescrip = getArgDescrip(opt, translation_domain);
207 int helpLength;
208 char * defs = NULL;
209 char * left;
210 int nb = maxLeftCol + 1;
211
212 /* Make sure there's more than enough room in target buffer. */
213 if (opt->longName) nb += strlen(opt->longName);
214 if (argDescrip) nb += strlen(argDescrip);
215
216 /*@-boundswrite@*/
217 left = malloc(nb);
218 if (left == NULL) return; /* XXX can't happen */
219 left[0] = '\0';
220 left[maxLeftCol] = '\0';
221
222 if (opt->longName && opt->shortName)
223 sprintf(left, "-%c, %s%s", opt->shortName,
224 ((opt->argInfo & POPT_ARGFLAG_ONEDASH) ? "-" : "--"),
225 opt->longName);
226 else if (opt->shortName != '\0')
227 sprintf(left, "-%c", opt->shortName);
228 else if (opt->longName)
229 sprintf(left, "%s%s",
230 ((opt->argInfo & POPT_ARGFLAG_ONEDASH) ? "-" : "--"),
231 opt->longName);
232 if (!*left) goto out;
233
234 if (argDescrip) {
235 char * le = left + strlen(left);
236
237 if (opt->argInfo & POPT_ARGFLAG_OPTIONAL)
238 *le++ = '[';
239
240 /* Choose type of output */
241 /*@-branchstate@*/
242 if (opt->argInfo & POPT_ARGFLAG_SHOW_DEFAULT) {
243 defs = singleOptionDefaultValue(lineLength, opt, translation_domain);
244 if (defs) {
245 char * t = malloc((help ? strlen(help) : 0) +
246 strlen(defs) + sizeof(" "));
247 if (t) {
248 char * te = t;
249 *te = '\0';
250 if (help) {
251 strcpy(te, help); te += strlen(te);
252 }
253 *te++ = ' ';
254 strcpy(te, defs);
255 defs = _free(defs);
256 }
257 defs = t;
258 }
259 }
260 /*@=branchstate@*/
261
262 if (opt->argDescrip == NULL) {
263 switch (opt->argInfo & POPT_ARG_MASK) {
264 case POPT_ARG_NONE:
265 break;
266 case POPT_ARG_VAL:
267 #ifdef NOTNOW /* XXX pug ugly nerdy output */
268 { long aLong = opt->val;
269 int ops = (opt->argInfo & POPT_ARGFLAG_LOGICALOPS);
270 int negate = (opt->argInfo & POPT_ARGFLAG_NOT);
271
272 /* Don't bother displaying typical values */
273 if (!ops && (aLong == 0L || aLong == 1L || aLong == -1L))
274 break;
275 *le++ = '[';
276 switch (ops) {
277 case POPT_ARGFLAG_OR:
278 *le++ = '|';
279 /*@innerbreak@*/ break;
280 case POPT_ARGFLAG_AND:
281 *le++ = '&';
282 /*@innerbreak@*/ break;
283 case POPT_ARGFLAG_XOR:
284 *le++ = '^';
285 /*@innerbreak@*/ break;
286 default:
287 /*@innerbreak@*/ break;
288 }
289 *le++ = '=';
290 if (negate) *le++ = '~';
291 /*@-formatconst@*/
292 le += sprintf(le, (ops ? "0x%lx" : "%ld"), aLong);
293 /*@=formatconst@*/
294 *le++ = ']';
295 }
296 #endif
297 break;
298 case POPT_ARG_INT:
299 case POPT_ARG_LONG:
300 case POPT_ARG_FLOAT:
301 case POPT_ARG_DOUBLE:
302 case POPT_ARG_STRING:
303 *le++ = '=';
304 strcpy(le, argDescrip); le += strlen(le);
305 break;
306 default:
307 break;
308 }
309 } else {
310 *le++ = '=';
311 strcpy(le, argDescrip); le += strlen(le);
312 }
313 if (opt->argInfo & POPT_ARGFLAG_OPTIONAL)
314 *le++ = ']';
315 *le = '\0';
316 }
317 /*@=boundswrite@*/
318
319 if (help)
320 fprintf(fp," %-*s ", maxLeftCol, left);
321 else {
322 fprintf(fp," %s\n", left);
323 goto out;
324 }
325
326 left = _free(left);
327 if (defs) {
328 help = defs; defs = NULL;
329 }
330
331 helpLength = strlen(help);
332 /*@-boundsread@*/
333 while (helpLength > lineLength) {
334 const char * ch;
335 char format[16];
336
337 ch = help + lineLength - 1;
338 while (ch > help && !isspace(*ch)) ch--;
339 if (ch == help) break; /* give up */
340 while (ch > (help + 1) && isspace(*ch)) ch--;
341 ch++;
342
343 sprintf(format, "%%.%ds\n%%%ds", (int) (ch - help), indentLength);
344 /*@-formatconst@*/
345 fprintf(fp, format, help, " ");
346 /*@=formatconst@*/
347 help = ch;
348 while (isspace(*help) && *help) help++;
349 helpLength = strlen(help);
350 }
351 /*@=boundsread@*/
352
353 if (helpLength) fprintf(fp, "%s\n", help);
354
355 out:
356 /*@-dependenttrans@*/
357 defs = _free(defs);
358 /*@=dependenttrans@*/
359 left = _free(left);
360 }
361
362 /**
363 * @param opt option(s)
364 * @param translation_domain translation domain
365 */
366 static int maxArgWidth(const struct poptOption * opt,
367 /*@null@*/ const char * translation_domain)
368 /*@*/
369 {
370 int max = 0;
371 int len = 0;
372 const char * s;
373
374 if (opt != NULL)
375 while (opt->longName || opt->shortName || opt->arg) {
376 if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
377 if (opt->arg) /* XXX program error */
378 len = maxArgWidth(opt->arg, translation_domain);
379 if (len > max) max = len;
380 } else if (!(opt->argInfo & POPT_ARGFLAG_DOC_HIDDEN)) {
381 len = sizeof(" ")-1;
382 if (opt->shortName != '\0') len += sizeof("-X")-1;
383 if (opt->shortName != '\0' && opt->longName) len += sizeof(", ")-1;
384 if (opt->longName) {
385 len += ((opt->argInfo & POPT_ARGFLAG_ONEDASH)
386 ? sizeof("-")-1 : sizeof("--")-1);
387 len += strlen(opt->longName);
388 }
389
390 s = getArgDescrip(opt, translation_domain);
391 if (s)
392 len += sizeof("=")-1 + strlen(s);
393 if (opt->argInfo & POPT_ARGFLAG_OPTIONAL) len += sizeof("[]")-1;
394 if (len > max) max = len;
395 }
396
397 opt++;
398 }
399
400 return max;
401 }
402
403 /**
404 * Display popt alias and exec help.
405 * @param fp output file handle
406 * @param items alias/exec array
407 * @param nitems no. of alias/exec entries
408 * @param left
409 * @param translation_domain translation domain
410 */
411 static void itemHelp(FILE * fp,
412 /*@null@*/ poptItem items, int nitems, int left,
413 /*@null@*/ const char * translation_domain)
414 /*@globals fileSystem @*/
415 /*@modifies *fp, fileSystem @*/
416 {
417 poptItem item;
418 int i;
419
420 if (items != NULL)
421 for (i = 0, item = items; i < nitems; i++, item++) {
422 const struct poptOption * opt;
423 opt = &item->option;
424 if ((opt->longName || opt->shortName) &&
425 !(opt->argInfo & POPT_ARGFLAG_DOC_HIDDEN))
426 singleOptionHelp(fp, left, opt, translation_domain);
427 }
428 }
429
430 /**
431 * Display help text for a table of options.
432 * @param con context
433 * @param fp output file handle
434 * @param table option(s)
435 * @param left
436 * @param translation_domain translation domain
437 */
438 static void singleTableHelp(poptContext con, FILE * fp,
439 /*@null@*/ const struct poptOption * table, int left,
440 /*@null@*/ const char * translation_domain)
441 /*@globals fileSystem @*/
442 /*@modifies *fp, fileSystem @*/
443 {
444 const struct poptOption * opt;
445 const char *sub_transdom;
446
447 if (table == poptAliasOptions) {
448 itemHelp(fp, con->aliases, con->numAliases, left, NULL);
449 itemHelp(fp, con->execs, con->numExecs, left, NULL);
450 return;
451 }
452
453 if (table != NULL)
454 for (opt = table; (opt->longName || opt->shortName || opt->arg); opt++) {
455 if ((opt->longName || opt->shortName) &&
456 !(opt->argInfo & POPT_ARGFLAG_DOC_HIDDEN))
457 singleOptionHelp(fp, left, opt, translation_domain);
458 }
459
460 if (table != NULL)
461 for (opt = table; (opt->longName || opt->shortName || opt->arg); opt++) {
462 if ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_INCLUDE_TABLE)
463 continue;
464 sub_transdom = getTableTranslationDomain(opt->arg);
465 if (sub_transdom == NULL)
466 sub_transdom = translation_domain;
467
468 if (opt->descrip)
469 fprintf(fp, "\n%s\n", D_(sub_transdom, opt->descrip));
470
471 singleTableHelp(con, fp, opt->arg, left, sub_transdom);
472 }
473 }
474
475 /**
476 * @param con context
477 * @param fp output file handle
478 */
479 static int showHelpIntro(poptContext con, FILE * fp)
480 /*@globals fileSystem @*/
481 /*@modifies *fp, fileSystem @*/
482 {
483 int len = 6;
484 const char * fn;
485
486 fprintf(fp, POPT_("Usage:"));
487 if (!(con->flags & POPT_CONTEXT_KEEP_FIRST)) {
488 /*@-boundsread@*/
489 /*@-nullderef@*/ /* LCL: wazzup? */
490 fn = con->optionStack->argv[0];
491 /*@=nullderef@*/
492 /*@=boundsread@*/
493 if (fn == NULL) return len;
494 if (strchr(fn, '/')) fn = strrchr(fn, '/') + 1;
495 fprintf(fp, " %s", fn);
496 len += strlen(fn) + 1;
497 }
498
499 return len;
500 }
501
502 void poptPrintHelp(poptContext con, FILE * fp, /*@unused@*/ int flags)
503 {
504 int leftColWidth;
505
506 (void) showHelpIntro(con, fp);
507 if (con->otherHelp)
508 fprintf(fp, " %s\n", con->otherHelp);
509 else
510 fprintf(fp, " %s\n", POPT_("[OPTION...]"));
511
512 leftColWidth = maxArgWidth(con->options, NULL);
513 singleTableHelp(con, fp, con->options, leftColWidth, NULL);
514 }
515
516 /**
517 * @param fp output file handle
518 * @param cursor
519 * @param opt option(s)
520 * @param translation_domain translation domain
521 */
522 static int singleOptionUsage(FILE * fp, int cursor,
523 const struct poptOption * opt,
524 /*@null@*/ const char *translation_domain)
525 /*@globals fileSystem @*/
526 /*@modifies *fp, fileSystem @*/
527 {
528 int len = 4;
529 char shortStr[2] = { '\0', '\0' };
530 const char * item = shortStr;
531 const char * argDescrip = getArgDescrip(opt, translation_domain);
532
533 if (opt->shortName != '\0' && opt->longName != NULL) {
534 len += 2;
535 if (!(opt->argInfo & POPT_ARGFLAG_ONEDASH)) len++;
536 len += strlen(opt->longName);
537 } else if (opt->shortName != '\0') {
538 len++;
539 shortStr[0] = opt->shortName;
540 shortStr[1] = '\0';
541 } else if (opt->longName) {
542 len += strlen(opt->longName);
543 if (!(opt->argInfo & POPT_ARGFLAG_ONEDASH)) len++;
544 item = opt->longName;
545 }
546
547 if (len == 4) return cursor;
548
549 if (argDescrip)
550 len += strlen(argDescrip) + 1;
551
552 if ((cursor + len) > 79) {
553 fprintf(fp, "\n ");
554 cursor = 7;
555 }
556
557 if (opt->longName && opt->shortName) {
558 fprintf(fp, " [-%c|-%s%s%s%s]",
559 opt->shortName, ((opt->argInfo & POPT_ARGFLAG_ONEDASH) ? "" : "-"),
560 opt->longName,
561 (argDescrip ? " " : ""),
562 (argDescrip ? argDescrip : ""));
563 } else {
564 fprintf(fp, " [-%s%s%s%s]",
565 ((opt->shortName || (opt->argInfo & POPT_ARGFLAG_ONEDASH)) ? "" : "-"),
566 item,
567 (argDescrip ? (opt->shortName != '\0' ? " " : "=") : ""),
568 (argDescrip ? argDescrip : ""));
569 }
570
571 return cursor + len + 1;
572 }
573
574 /**
575 * Display popt alias and exec usage.
576 * @param fp output file handle
577 * @param cursor
578 * @param item alias/exec array
579 * @param nitems no. of ara/exec entries
580 * @param translation_domain translation domain
581 */
582 static int itemUsage(FILE * fp, int cursor, poptItem item, int nitems,
583 /*@null@*/ const char * translation_domain)
584 /*@globals fileSystem @*/
585 /*@modifies *fp, fileSystem @*/
586 {
587 int i;
588
589 /*@-branchstate@*/ /* FIX: W2DO? */
590 if (item != NULL)
591 for (i = 0; i < nitems; i++, item++) {
592 const struct poptOption * opt;
593 opt = &item->option;
594 if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INTL_DOMAIN) {
595 translation_domain = (const char *)opt->arg;
596 } else if ((opt->longName || opt->shortName) &&
597 !(opt->argInfo & POPT_ARGFLAG_DOC_HIDDEN)) {
598 cursor = singleOptionUsage(fp, cursor, opt, translation_domain);
599 }
600 }
601 /*@=branchstate@*/
602
603 return cursor;
604 }
605
606 /**
607 * Keep track of option tables already processed.
608 */
609 typedef struct poptDone_s {
610 int nopts;
611 int maxopts;
612 const void ** opts;
613 } * poptDone;
614
615 /**
616 * Display usage text for a table of options.
617 * @param con context
618 * @param fp output file handle
619 * @param cursor
620 * @param opt option(s)
621 * @param translation_domain translation domain
622 * @param done tables already processed
623 * @return
624 */
625 static int singleTableUsage(poptContext con, FILE * fp, int cursor,
626 /*@null@*/ const struct poptOption * opt,
627 /*@null@*/ const char * translation_domain,
628 /*@null@*/ poptDone done)
629 /*@globals fileSystem @*/
630 /*@modifies *fp, done, fileSystem @*/
631 {
632 /*@-branchstate@*/ /* FIX: W2DO? */
633 if (opt != NULL)
634 for (; (opt->longName || opt->shortName || opt->arg) ; opt++) {
635 if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INTL_DOMAIN) {
636 translation_domain = (const char *)opt->arg;
637 } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
638 if (done) {
639 int i = 0;
640 for (i = 0; i < done->nopts; i++) {
641 /*@-boundsread@*/
642 const void * that = done->opts[i];
643 /*@=boundsread@*/
644 if (that == NULL || that != opt->arg)
645 /*@innercontinue@*/ continue;
646 /*@innerbreak@*/ break;
647 }
648 /* Skip if this table has already been processed. */
649 if (opt->arg == NULL || i < done->nopts)
650 continue;
651 /*@-boundswrite@*/
652 if (done->nopts < done->maxopts)
653 done->opts[done->nopts++] = (const void *) opt->arg;
654 /*@=boundswrite@*/
655 }
656 cursor = singleTableUsage(con, fp, cursor, opt->arg,
657 translation_domain, done);
658 } else if ((opt->longName || opt->shortName) &&
659 !(opt->argInfo & POPT_ARGFLAG_DOC_HIDDEN)) {
660 cursor = singleOptionUsage(fp, cursor, opt, translation_domain);
661 }
662 }
663 /*@=branchstate@*/
664
665 return cursor;
666 }
667
668 /**
669 * Return concatenated short options for display.
670 * @todo Sub-tables should be recursed.
671 * @param opt option(s)
672 * @param fp output file handle
673 * @retval str concatenation of short options
674 * @return length of display string
675 */
676 static int showShortOptions(const struct poptOption * opt, FILE * fp,
677 /*@null@*/ char * str)
678 /*@globals fileSystem @*/
679 /*@modifies *str, *fp, fileSystem @*/
680 {
681 char * s = alloca(300); /* larger than the ascii set */
682
683 s[0] = '\0';
684 /*@-branchstate@*/ /* FIX: W2DO? */
685 if (str == NULL) {
686 memset(s, 0, sizeof(s));
687 str = s;
688 }
689 /*@=branchstate@*/
690
691 /*@-boundswrite@*/
692 if (opt != NULL)
693 for (; (opt->longName || opt->shortName || opt->arg); opt++) {
694 if (opt->shortName && !(opt->argInfo & POPT_ARG_MASK))
695 str[strlen(str)] = opt->shortName;
696 else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE)
697 if (opt->arg) /* XXX program error */
698 (void) showShortOptions(opt->arg, fp, str);
699 }
700 /*@=boundswrite@*/
701
702 if (s != str || *s != '\0')
703 return 0;
704
705 fprintf(fp, " [-%s]", s);
706 return strlen(s) + 4;
707 }
708
709 void poptPrintUsage(poptContext con, FILE * fp, /*@unused@*/ int flags)
710 {
711 poptDone done = memset(alloca(sizeof(*done)), 0, sizeof(*done));
712 int cursor;
713
714 done->nopts = 0;
715 done->maxopts = 64;
716 cursor = done->maxopts * sizeof(*done->opts);
717 /*@-boundswrite@*/
718 done->opts = memset(alloca(cursor), 0, cursor);
719 done->opts[done->nopts++] = (const void *) con->options;
720 /*@=boundswrite@*/
721
722 cursor = showHelpIntro(con, fp);
723 cursor += showShortOptions(con->options, fp, NULL);
724 cursor = singleTableUsage(con, fp, cursor, con->options, NULL, done);
725 cursor = itemUsage(fp, cursor, con->aliases, con->numAliases, NULL);
726 cursor = itemUsage(fp, cursor, con->execs, con->numExecs, NULL);
727
728 if (con->otherHelp) {
729 cursor += strlen(con->otherHelp) + 1;
730 if (cursor > 79) fprintf(fp, "\n ");
731 fprintf(fp, " %s", con->otherHelp);
732 }
733
734 fprintf(fp, "\n");
735 }
736
737 void poptSetOtherOptionHelp(poptContext con, const char * text)
738 {
739 con->otherHelp = _free(con->otherHelp);
740 con->otherHelp = xstrdup(text);
741 }
742 /*@=type@*/
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