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1.7 ! millert 1: /* $OpenBSD: man.c,v 1.6 1997/09/10 04:16:30 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: man.c,v 1.7 1995/09/28 06:05:34 tls Exp $ */
3:
4: /*
5: * Copyright (c) 1987, 1993, 1994, 1995
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1987, 1993, 1994, 1995\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)man.c 8.17 (Berkeley) 1/31/95";
46: #else
1.7 ! millert 47: static char rcsid[] = "$OpenBSD: man.c,v 1.6 1997/09/10 04:16:30 deraadt Exp $";
1.1 deraadt 48: #endif
49: #endif /* not lint */
50:
51: #include <sys/param.h>
52: #include <sys/queue.h>
53:
54: #include <ctype.h>
55: #include <err.h>
56: #include <errno.h>
57: #include <fcntl.h>
58: #include <fnmatch.h>
59: #include <glob.h>
60: #include <signal.h>
61: #include <stdio.h>
62: #include <stdlib.h>
63: #include <string.h>
64: #include <unistd.h>
65:
66: #include "config.h"
67: #include "pathnames.h"
68:
69: int f_all, f_where;
70:
71: static void build_page __P((char *, char **));
72: static void cat __P((char *));
73: static char *check_pager __P((char *));
74: static int cleanup __P((void));
75: static void how __P((char *));
76: static void jump __P((char **, char *, char *));
77: static int manual __P((char *, TAG *, glob_t *));
78: static void onsig __P((int));
79: static void usage __P((void));
80:
81: int
82: main(argc, argv)
83: int argc;
84: char *argv[];
85: {
86: extern char *optarg;
87: extern int optind;
88: TAG *defp, *defnewp, *section, *sectnewp, *subp;
89: ENTRY *e_defp, *e_sectp, *e_subp, *ep;
90: glob_t pg;
91: size_t len;
92: int ch, f_cat, f_how, found;
1.7 ! millert 93: char **ap, *cmd, *machine, *p, *p_add, *p_path, *pager, *sflag, *slashp;
1.1 deraadt 94: char *conffile, buf[MAXPATHLEN * 2];
95:
1.7 ! millert 96: machine = sflag = NULL;
1.1 deraadt 97: f_cat = f_how = 0;
98: conffile = p_add = p_path = NULL;
1.7 ! millert 99: while ((ch = getopt(argc, argv, "-aC:cfhkM:m:P:s:S:w")) != -1)
1.1 deraadt 100: switch (ch) {
101: case 'a':
102: f_all = 1;
103: break;
104: case 'C':
105: conffile = optarg;
106: break;
107: case 'c':
108: case '-': /* Deprecated. */
109: f_cat = 1;
110: break;
111: case 'h':
112: f_how = 1;
113: break;
114: case 'm':
115: p_add = optarg;
116: break;
117: case 'M':
118: case 'P': /* Backward compatibility. */
119: p_path = optarg;
120: break;
1.7 ! millert 121: case 's': /* SVR4 compatibility. */
! 122: sflag = optarg;
! 123: break;
! 124: case 'S':
! 125: machine = optarg;
! 126: break;
1.1 deraadt 127: /*
128: * The -f and -k options are backward compatible,
129: * undocumented ways of calling whatis(1) and apropos(1).
130: */
131: case 'f':
132: jump(argv, "-f", "whatis");
133: /* NOTREACHED */
134: case 'k':
135: jump(argv, "-k", "apropos");
136: /* NOTREACHED */
137: case 'w':
138: f_all = f_where = 1;
139: break;
140: case '?':
141: default:
142: usage();
143: }
144: argc -= optind;
145: argv += optind;
146:
147: if (!*argv)
148: usage();
149:
150: if (!f_cat && !f_how && !f_where)
151: if (!isatty(1))
152: f_cat = 1;
153: else if ((pager = getenv("PAGER")) != NULL)
154: pager = check_pager(pager);
155: else
156: pager = _PATH_PAGER;
157:
158: /* Read the configuration file. */
159: config(conffile);
160:
1.7 ! millert 161: /* Get the machine type unless specified by -S. */
! 162: if (machine == NULL && (machine = getenv("MACHINE")) == NULL)
1.1 deraadt 163: machine = MACHINE;
164:
165: /* If there's no _default list, create an empty one. */
166: if ((defp = getlist("_default")) == NULL)
167: defp = addlist("_default");
168:
169: /*
170: * 1: If the user specified a MANPATH variable, or set the -M
171: * option, we replace the _default list with the user's list,
172: * appending the entries in the _subdir list and the machine.
173: */
174: if (p_path == NULL)
175: p_path = getenv("MANPATH");
176: if (p_path != NULL) {
177: while ((e_defp = defp->list.tqh_first) != NULL) {
178: free(e_defp->s);
179: TAILQ_REMOVE(&defp->list, e_defp, q);
180: }
181: for (p = strtok(p_path, ":");
182: p != NULL; p = strtok(NULL, ":")) {
183: slashp = p[strlen(p) - 1] == '/' ? "" : "/";
184: e_subp = (subp = getlist("_subdir")) == NULL ?
185: NULL : subp->list.tqh_first;
186: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
187: (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
188: p, slashp, e_subp->s, machine);
189: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
190: (ep->s = strdup(buf)) == NULL)
191: err(1, NULL);
192: TAILQ_INSERT_TAIL(&defp->list, ep, q);
193: }
194: }
195: }
196:
197: /*
198: * 2: If the user did not specify MANPATH, -M or a section, rewrite
199: * the _default list to include the _subdir list and the machine.
200: */
1.7 ! millert 201: if (sflag == NULL && argv[1] == NULL)
1.1 deraadt 202: section = NULL;
1.7 ! millert 203: else {
! 204: if (sflag != NULL && (section = getlist(sflag)) == NULL)
! 205: errx(1, "unknown manual section `%s'", sflag);
! 206: else if (sflag == NULL && (section = getlist(*argv)) != NULL)
! 207: ++argv;
! 208: }
1.1 deraadt 209: if (p_path == NULL && section == NULL) {
210: defnewp = addlist("_default_new");
211: e_defp =
212: defp->list.tqh_first == NULL ? NULL : defp->list.tqh_first;
213: for (; e_defp != NULL; e_defp = e_defp->q.tqe_next) {
214: slashp =
215: e_defp->s[strlen(e_defp->s) - 1] == '/' ? "" : "/";
216: e_subp = (subp = getlist("_subdir")) == NULL ?
217: NULL : subp->list.tqh_first;
218: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
219: (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
220: e_defp->s, slashp, e_subp->s, machine);
221: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
222: (ep->s = strdup(buf)) == NULL)
223: err(1, NULL);
224: TAILQ_INSERT_TAIL(&defnewp->list, ep, q);
225: }
226: }
227: defp = getlist("_default");
228: while ((e_defp = defp->list.tqh_first) != NULL) {
229: free(e_defp->s);
230: TAILQ_REMOVE(&defp->list, e_defp, q);
231: }
232: free(defp->s);
233: TAILQ_REMOVE(&head, defp, q);
234: defnewp = getlist("_default_new");
235: free(defnewp->s);
236: defnewp->s = "_default";
237: defp = defnewp;
238: }
239:
240: /*
241: * 3: If the user set the -m option, insert the user's list before
242: * whatever list we have, again appending the _subdir list and
1.3 michaels 243: * the machine.
1.1 deraadt 244: */
1.3 michaels 245: if (p_add != NULL) {
246: e_sectp = NULL;
1.1 deraadt 247: for (p = strtok(p_add, ":"); p != NULL; p = strtok(NULL, ":")) {
248: slashp = p[strlen(p) - 1] == '/' ? "" : "/";
249: e_subp = (subp = getlist("_subdir")) == NULL ?
250: NULL : subp->list.tqh_first;
251: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
252: (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
253: p, slashp, e_subp->s, machine);
254: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
255: (ep->s = strdup(buf)) == NULL)
256: err(1, NULL);
1.3 michaels 257: /* puts it at the end, should be at the top, but then the added
258: entries would be in reverse order, fix later when all are added*/
259: TAILQ_INSERT_TAIL(&defp->list, ep, q);
260: if (e_sectp == NULL) /* save first added, to-be the new top */
261: e_sectp = ep;
1.1 deraadt 262: }
263: }
1.3 michaels 264: if (e_sectp != NULL) { /* entries added, fix order */
265: ep->q.tqe_next = defp->list.tqh_first; /* save original head */
266: defp->list.tqh_first = e_sectp; /* first added entry, new top */
267: *e_sectp->q.tqe_prev = NULL; /* terminate list */
268: }
269: }
1.1 deraadt 270: /*
271: * 4: If no -m was specified, and a section was, rewrite the section's
272: * paths (if they have a trailing slash) to append the _subdir list
273: * and the machine. This then becomes the _default list.
274: */
275: if (p_add == NULL && section != NULL) {
276: sectnewp = addlist("_section_new");
277: for (e_sectp = section->list.tqh_first;
278: e_sectp != NULL; e_sectp = e_sectp->q.tqe_next) {
279: if (e_sectp->s[strlen(e_sectp->s) - 1] != '/') {
280: (void)snprintf(buf, sizeof(buf),
281: "%s{/%s,}", e_sectp->s, machine);
282: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
283: (ep->s = strdup(buf)) == NULL)
284: err(1, NULL);
285: TAILQ_INSERT_TAIL(§newp->list, ep, q);
286: continue;
287: }
288: e_subp = (subp = getlist("_subdir")) == NULL ?
289: NULL : subp->list.tqh_first;
290: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
291: (void)snprintf(buf, sizeof(buf), "%s%s{/%s,}",
292: e_sectp->s, e_subp->s, machine);
293: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
294: (ep->s = strdup(buf)) == NULL)
295: err(1, NULL);
296: TAILQ_INSERT_TAIL(§newp->list, ep, q);
297: }
298: }
299: sectnewp->s = section->s;
300: defp = sectnewp;
301: TAILQ_REMOVE(&head, section, q);
302: }
303:
304: /*
305: * 5: Search for the files. Set up an interrupt handler, so the
306: * temporary files go away.
307: */
308: (void)signal(SIGINT, onsig);
309: (void)signal(SIGHUP, onsig);
310:
311: memset(&pg, 0, sizeof(pg));
312: for (found = 0; *argv; ++argv)
313: if (manual(*argv, defp, &pg))
314: found = 1;
315:
316: /* 6: If nothing found, we're done. */
317: if (!found) {
318: (void)cleanup();
319: exit (1);
320: }
321:
322: /* 7: If it's simple, display it fast. */
323: if (f_cat) {
324: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
325: if (**ap == '\0')
326: continue;
327: cat(*ap);
328: }
329: exit (cleanup());
330: }
331: if (f_how) {
332: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
333: if (**ap == '\0')
334: continue;
335: how(*ap);
336: }
337: exit(cleanup());
338: }
339: if (f_where) {
340: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
341: if (**ap == '\0')
342: continue;
343: (void)printf("%s\n", *ap);
344: }
345: exit(cleanup());
346: }
347:
348: /*
349: * 8: We display things in a single command; build a list of things
350: * to display.
351: */
352: for (ap = pg.gl_pathv, len = strlen(pager) + 1; *ap != NULL; ++ap) {
353: if (**ap == '\0')
354: continue;
355: len += strlen(*ap) + 1;
356: }
357: if ((cmd = malloc(len)) == NULL) {
358: warn(NULL);
359: (void)cleanup();
360: exit(1);
361: }
362: p = cmd;
363: len = strlen(pager);
364: memmove(p, pager, len);
365: p += len;
366: *p++ = ' ';
367: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
368: if (**ap == '\0')
369: continue;
370: len = strlen(*ap);
371: memmove(p, *ap, len);
372: p += len;
373: *p++ = ' ';
374: }
375: *p = '\0';
376:
377: /* Use system(3) in case someone's pager is "pager arg1 arg2". */
378: (void)system(cmd);
379:
380: exit(cleanup());
381: }
382:
383: /*
384: * manual --
385: * Search the manuals for the pages.
386: */
387: static int
388: manual(page, tag, pg)
389: char *page;
390: TAG *tag;
391: glob_t *pg;
392: {
393: ENTRY *ep, *e_sufp, *e_tag;
394: TAG *missp, *sufp;
395: int anyfound, cnt, found;
1.6 deraadt 396: char *p, buf[MAXPATHLEN];
1.1 deraadt 397:
398: anyfound = 0;
399: buf[0] = '*';
400:
401: /* For each element in the list... */
402: e_tag = tag == NULL ? NULL : tag->list.tqh_first;
403: for (; e_tag != NULL; e_tag = e_tag->q.tqe_next) {
404: (void)snprintf(buf, sizeof(buf), "%s/%s.*", e_tag->s, page);
405: if (glob(buf,
406: GLOB_APPEND | GLOB_BRACE | GLOB_NOSORT | GLOB_QUOTE,
407: NULL, pg)) {
408: warn("globbing");
409: (void)cleanup();
410: exit(1);
411: }
412: if (pg->gl_matchc == 0)
413: continue;
414:
415: /* Find out if it's really a man page. */
416: for (cnt = pg->gl_pathc - pg->gl_matchc;
417: cnt < pg->gl_pathc; ++cnt) {
418:
419: /*
420: * Try the _suffix key words first.
421: *
422: * XXX
423: * Older versions of man.conf didn't have the suffix
424: * key words, it was assumed that everything was a .0.
425: * We just test for .0 first, it's fast and probably
426: * going to hit.
427: */
428: (void)snprintf(buf, sizeof(buf), "*/%s.0", page);
429: if (!fnmatch(buf, pg->gl_pathv[cnt], 0))
430: goto next;
431:
432: e_sufp = (sufp = getlist("_suffix")) == NULL ?
433: NULL : sufp->list.tqh_first;
434: for (found = 0;
435: e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
436: (void)snprintf(buf,
437: sizeof(buf), "*/%s%s", page, e_sufp->s);
438: if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
439: found = 1;
440: break;
441: }
442: }
443: if (found)
444: goto next;
445:
446: /* Try the _build key words next. */
447: e_sufp = (sufp = getlist("_build")) == NULL ?
448: NULL : sufp->list.tqh_first;
449: for (found = 0;
450: e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
451: for (p = e_sufp->s;
452: *p != '\0' && !isspace(*p); ++p);
453: if (*p == '\0')
454: continue;
455: *p = '\0';
456: (void)snprintf(buf,
457: sizeof(buf), "*/%s%s", page, e_sufp->s);
458: if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
459: if (!f_where)
460: build_page(p + 1,
461: &pg->gl_pathv[cnt]);
462: *p = ' ';
463: found = 1;
464: break;
465: }
466: *p = ' ';
467: }
468: if (found) {
469: next: anyfound = 1;
470: if (!f_all) {
471: /* Delete any other matches. */
472: while (++cnt< pg->gl_pathc)
473: pg->gl_pathv[cnt] = "";
474: break;
475: }
476: continue;
477: }
478:
479: /* It's not a man page, forget about it. */
480: pg->gl_pathv[cnt] = "";
481: }
482:
483: if (anyfound && !f_all)
484: break;
485: }
486:
487: /* If not found, enter onto the missing list. */
488: if (!anyfound) {
489: if ((missp = getlist("_missing")) == NULL)
490: missp = addlist("_missing");
491: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
492: (ep->s = strdup(page)) == NULL) {
493: warn(NULL);
494: (void)cleanup();
495: exit(1);
496: }
497: TAILQ_INSERT_TAIL(&missp->list, ep, q);
498: }
499: return (anyfound);
500: }
501:
502: /*
503: * build_page --
504: * Build a man page for display.
505: */
506: static void
507: build_page(fmt, pathp)
508: char *fmt, **pathp;
509: {
510: static int warned;
511: ENTRY *ep;
512: TAG *intmpp;
513: int fd, n;
514: char *p, *b;
1.4 deraadt 515: char buf[MAXPATHLEN], cmd[MAXPATHLEN], tpath[MAXPATHLEN];
1.1 deraadt 516:
517: /* Let the user know this may take awhile. */
518: if (!warned) {
519: warned = 1;
520: warnx("Formatting manual page...");
521: }
522:
523: /*
524: * Historically man chdir'd to the root of the man tree.
525: * This was used in man pages that contained relative ".so"
526: * directives (including other man pages for command aliases etc.)
527: * It even went one step farther, by examining the first line
528: * of the man page and parsing the .so filename so it would
529: * make hard(?) links to the cat'ted man pages for space savings.
530: * (We don't do that here, but we could).
531: */
532:
533: /* copy and find the end */
534: for (b = buf, p = *pathp; (*b++ = *p++) != '\0';)
535: continue;
536:
537: /* skip the last two path components, page name and man[n] */
538: for (--b, n = 2; b != buf; b--)
539: if (*b == '/')
540: if (--n == 0) {
541: *b = '\0';
542: (void) chdir(buf);
543: }
544:
545:
546: /* Add a remove-when-done list. */
547: if ((intmpp = getlist("_intmp")) == NULL)
548: intmpp = addlist("_intmp");
549:
550: /* Move to the printf(3) format string. */
551: for (; *fmt && isspace(*fmt); ++fmt);
552:
553: /*
554: * Get a temporary file and build a version of the file
555: * to display. Replace the old file name with the new one.
556: */
1.4 deraadt 557: (void)strcpy(tpath, _PATH_TMPFILE);
1.1 deraadt 558: if ((fd = mkstemp(tpath)) == -1) {
559: warn("%s", tpath);
560: (void)cleanup();
561: exit(1);
562: }
563: (void)snprintf(buf, sizeof(buf), "%s > %s", fmt, tpath);
564: (void)snprintf(cmd, sizeof(cmd), buf, *pathp);
565: (void)system(cmd);
566: (void)close(fd);
567: if ((*pathp = strdup(tpath)) == NULL) {
568: warn(NULL);
569: (void)cleanup();
570: exit(1);
571: }
572:
573: /* Link the built file into the remove-when-done list. */
574: if ((ep = malloc(sizeof(ENTRY))) == NULL) {
575: warn(NULL);
576: (void)cleanup();
577: exit(1);
578: }
579: ep->s = *pathp;
580: TAILQ_INSERT_TAIL(&intmpp->list, ep, q);
581: }
582:
583: /*
584: * how --
585: * display how information
586: */
587: static void
588: how(fname)
589: char *fname;
590: {
591: FILE *fp;
592:
593: int lcnt, print;
594: char *p, buf[256];
595:
596: if (!(fp = fopen(fname, "r"))) {
597: warn("%s", fname);
598: (void)cleanup();
599: exit (1);
600: }
601: #define S1 "SYNOPSIS"
602: #define S2 "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"
603: #define D1 "DESCRIPTION"
604: #define D2 "D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN"
605: for (lcnt = print = 0; fgets(buf, sizeof(buf), fp);) {
606: if (!strncmp(buf, S1, sizeof(S1) - 1) ||
607: !strncmp(buf, S2, sizeof(S2) - 1)) {
608: print = 1;
609: continue;
610: } else if (!strncmp(buf, D1, sizeof(D1) - 1) ||
611: !strncmp(buf, D2, sizeof(D2) - 1))
612: return;
613: if (!print)
614: continue;
615: if (*buf == '\n')
616: ++lcnt;
617: else {
618: for(; lcnt; --lcnt)
619: (void)putchar('\n');
620: for (p = buf; isspace(*p); ++p);
621: (void)fputs(p, stdout);
622: }
623: }
624: (void)fclose(fp);
625: }
626:
627: /*
628: * cat --
629: * cat out the file
630: */
631: static void
632: cat(fname)
633: char *fname;
634: {
635: int fd, n;
636: char buf[2048];
637:
638: if ((fd = open(fname, O_RDONLY, 0)) < 0) {
639: warn("%s", fname);
640: (void)cleanup();
641: exit(1);
642: }
643: while ((n = read(fd, buf, sizeof(buf))) > 0)
644: if (write(STDOUT_FILENO, buf, n) != n) {
645: warn("write");
646: (void)cleanup();
647: exit (1);
648: }
649: if (n == -1) {
650: warn("read");
651: (void)cleanup();
652: exit(1);
653: }
654: (void)close(fd);
655: }
656:
657: /*
658: * check_pager --
659: * check the user supplied page information
660: */
661: static char *
662: check_pager(name)
663: char *name;
664: {
665: char *p, *save;
666:
667: /*
668: * if the user uses "more", we make it "more -s"; watch out for
669: * PAGER = "mypager /usr/ucb/more"
670: */
671: for (p = name; *p && !isspace(*p); ++p);
672: for (; p > name && *p != '/'; --p);
673: if (p != name)
674: ++p;
675:
676: /* make sure it's "more", not "morex" */
677: if (!strncmp(p, "more", 4) && (!p[4] || isspace(p[4]))){
678: save = name;
679: /* allocate space to add the "-s" */
680: if (!(name =
681: malloc((u_int)(strlen(save) + sizeof("-s") + 1))))
682: err(1, NULL);
683: (void)sprintf(name, "%s %s", save, "-s");
684: }
685: return(name);
686: }
687:
688: /*
689: * jump --
690: * strip out flag argument and jump
691: */
692: static void
693: jump(argv, flag, name)
694: char **argv, *flag, *name;
695: {
696: char **arg;
697:
698: argv[0] = name;
699: for (arg = argv + 1; *arg; ++arg)
700: if (!strcmp(*arg, flag))
701: break;
702: for (; *arg; ++arg)
703: arg[0] = arg[1];
704: execvp(name, argv);
705: (void)fprintf(stderr, "%s: Command not found.\n", name);
706: exit(1);
707: }
708:
709: /*
710: * onsig --
711: * If signaled, delete the temporary files.
712: */
713: static void
714: onsig(signo)
715: int signo;
716: {
717: (void)cleanup();
718:
719: (void)signal(signo, SIG_DFL);
720: (void)kill(getpid(), signo);
721:
722: /* NOTREACHED */
723: exit (1);
724: }
725:
726: /*
727: * cleanup --
728: * Clean up temporary files, show any error messages.
729: */
730: static int
731: cleanup()
732: {
733: TAG *intmpp, *missp;
734: ENTRY *ep;
735: int rval;
736:
737: rval = 0;
738: ep = (missp = getlist("_missing")) == NULL ?
739: NULL : missp->list.tqh_first;
740: if (ep != NULL)
741: for (; ep != NULL; ep = ep->q.tqe_next) {
742: warnx("no entry for %s in the manual.", ep->s);
743: rval = 1;
744: }
745:
746: ep = (intmpp = getlist("_intmp")) == NULL ?
747: NULL : intmpp->list.tqh_first;
748: for (; ep != NULL; ep = ep->q.tqe_next)
749: (void)unlink(ep->s);
750: return (rval);
751: }
752:
753: /*
754: * usage --
755: * print usage message and die
756: */
757: static void
758: usage()
759: {
760: (void)fprintf(stderr,
761: "usage: man [-achw] [-C file] [-M path] [-m path] [section] title ...\n");
762: exit(1);
763: }