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unbreak reading from stdin after recent parse() restructuring;
[mandoc.git] / main.c
1 /* $Id: main.c,v 1.263 2016/01/16 22:30:33 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010-2012, 2014-2016 Ingo Schwarze <schwarze@openbsd.org>
5 * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19 #include "config.h"
20
21 #include <sys/types.h>
22 #include <sys/param.h> /* MACHINE */
23 #include <sys/wait.h>
24
25 #include <assert.h>
26 #include <ctype.h>
27 #if HAVE_ERR
28 #include <err.h>
29 #endif
30 #include <errno.h>
31 #include <fcntl.h>
32 #include <glob.h>
33 #include <signal.h>
34 #include <stdio.h>
35 #include <stdint.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <unistd.h>
39
40 #include "mandoc_aux.h"
41 #include "mandoc.h"
42 #include "roff.h"
43 #include "mdoc.h"
44 #include "man.h"
45 #include "tag.h"
46 #include "main.h"
47 #include "manconf.h"
48 #include "mansearch.h"
49
50 #if !defined(__GNUC__) || (__GNUC__ < 2)
51 # if !defined(lint)
52 # define __attribute__(x)
53 # endif
54 #endif /* !defined(__GNUC__) || (__GNUC__ < 2) */
55
56 enum outmode {
57 OUTMODE_DEF = 0,
58 OUTMODE_FLN,
59 OUTMODE_LST,
60 OUTMODE_ALL,
61 OUTMODE_INT,
62 OUTMODE_ONE
63 };
64
65 enum outt {
66 OUTT_ASCII = 0, /* -Tascii */
67 OUTT_LOCALE, /* -Tlocale */
68 OUTT_UTF8, /* -Tutf8 */
69 OUTT_TREE, /* -Ttree */
70 OUTT_MAN, /* -Tman */
71 OUTT_HTML, /* -Thtml */
72 OUTT_LINT, /* -Tlint */
73 OUTT_PS, /* -Tps */
74 OUTT_PDF /* -Tpdf */
75 };
76
77 struct curparse {
78 struct mparse *mp;
79 enum mandoclevel wlevel; /* ignore messages below this */
80 int wstop; /* stop after a file with a warning */
81 enum outt outtype; /* which output to use */
82 void *outdata; /* data for output */
83 struct manoutput *outopts; /* output options */
84 };
85
86 static int fs_lookup(const struct manpaths *,
87 size_t ipath, const char *,
88 const char *, const char *,
89 struct manpage **, size_t *);
90 static void fs_search(const struct mansearch *,
91 const struct manpaths *, int, char**,
92 struct manpage **, size_t *);
93 static int koptions(int *, char *);
94 #if HAVE_SQLITE3
95 int mandocdb(int, char**);
96 #endif
97 static int moptions(int *, char *);
98 static void mmsg(enum mandocerr, enum mandoclevel,
99 const char *, int, int, const char *);
100 static void parse(struct curparse *, int, const char *);
101 static void passthrough(const char *, int, int);
102 static pid_t spawn_pager(struct tag_files *);
103 static int toptions(struct curparse *, char *);
104 static void usage(enum argmode) __attribute__((noreturn));
105 static int woptions(struct curparse *, char *);
106
107 static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
108 static char help_arg[] = "help";
109 static char *help_argv[] = {help_arg, NULL};
110 static enum mandoclevel rc;
111
112
113 int
114 main(int argc, char *argv[])
115 {
116 struct manconf conf;
117 struct curparse curp;
118 struct mansearch search;
119 struct tag_files *tag_files;
120 const char *progname;
121 char *auxpaths;
122 char *defos;
123 unsigned char *uc;
124 struct manpage *res, *resp;
125 char *conf_file, *defpaths;
126 size_t isec, i, sz;
127 int prio, best_prio;
128 char sec;
129 enum outmode outmode;
130 int fd;
131 int show_usage;
132 int options;
133 int use_pager;
134 int status, signum;
135 int c;
136 pid_t pager_pid, tc_pgid, man_pgid, pid;
137
138 #if HAVE_PROGNAME
139 progname = getprogname();
140 #else
141 if (argc < 1)
142 progname = mandoc_strdup("mandoc");
143 else if ((progname = strrchr(argv[0], '/')) == NULL)
144 progname = argv[0];
145 else
146 ++progname;
147 setprogname(progname);
148 #endif
149
150 #if HAVE_SQLITE3
151 if (strncmp(progname, "mandocdb", 8) == 0 ||
152 strcmp(progname, BINM_MAKEWHATIS) == 0)
153 return mandocdb(argc, argv);
154 #endif
155
156 #if HAVE_PLEDGE
157 if (pledge("stdio rpath tmppath tty proc exec flock", NULL) == -1)
158 err((int)MANDOCLEVEL_SYSERR, "pledge");
159 #endif
160
161 /* Search options. */
162
163 memset(&conf, 0, sizeof(conf));
164 conf_file = defpaths = NULL;
165 auxpaths = NULL;
166
167 memset(&search, 0, sizeof(struct mansearch));
168 search.outkey = "Nd";
169
170 if (strcmp(progname, BINM_MAN) == 0)
171 search.argmode = ARG_NAME;
172 else if (strcmp(progname, BINM_APROPOS) == 0)
173 search.argmode = ARG_EXPR;
174 else if (strcmp(progname, BINM_WHATIS) == 0)
175 search.argmode = ARG_WORD;
176 else if (strncmp(progname, "help", 4) == 0)
177 search.argmode = ARG_NAME;
178 else
179 search.argmode = ARG_FILE;
180
181 /* Parser and formatter options. */
182
183 memset(&curp, 0, sizeof(struct curparse));
184 curp.outtype = OUTT_LOCALE;
185 curp.wlevel = MANDOCLEVEL_BADARG;
186 curp.outopts = &conf.output;
187 options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
188 defos = NULL;
189
190 use_pager = 1;
191 tag_files = NULL;
192 show_usage = 0;
193 outmode = OUTMODE_DEF;
194
195 while (-1 != (c = getopt(argc, argv,
196 "aC:cfhI:iK:klM:m:O:S:s:T:VW:w"))) {
197 switch (c) {
198 case 'a':
199 outmode = OUTMODE_ALL;
200 break;
201 case 'C':
202 conf_file = optarg;
203 break;
204 case 'c':
205 use_pager = 0;
206 break;
207 case 'f':
208 search.argmode = ARG_WORD;
209 break;
210 case 'h':
211 conf.output.synopsisonly = 1;
212 use_pager = 0;
213 outmode = OUTMODE_ALL;
214 break;
215 case 'I':
216 if (strncmp(optarg, "os=", 3)) {
217 warnx("-I %s: Bad argument", optarg);
218 return (int)MANDOCLEVEL_BADARG;
219 }
220 if (defos) {
221 warnx("-I %s: Duplicate argument", optarg);
222 return (int)MANDOCLEVEL_BADARG;
223 }
224 defos = mandoc_strdup(optarg + 3);
225 break;
226 case 'i':
227 outmode = OUTMODE_INT;
228 break;
229 case 'K':
230 if ( ! koptions(&options, optarg))
231 return (int)MANDOCLEVEL_BADARG;
232 break;
233 case 'k':
234 search.argmode = ARG_EXPR;
235 break;
236 case 'l':
237 search.argmode = ARG_FILE;
238 outmode = OUTMODE_ALL;
239 break;
240 case 'M':
241 defpaths = optarg;
242 break;
243 case 'm':
244 auxpaths = optarg;
245 break;
246 case 'O':
247 search.outkey = optarg;
248 while (optarg != NULL)
249 manconf_output(&conf.output,
250 strsep(&optarg, ","));
251 break;
252 case 'S':
253 search.arch = optarg;
254 break;
255 case 's':
256 search.sec = optarg;
257 break;
258 case 'T':
259 if ( ! toptions(&curp, optarg))
260 return (int)MANDOCLEVEL_BADARG;
261 break;
262 case 'W':
263 if ( ! woptions(&curp, optarg))
264 return (int)MANDOCLEVEL_BADARG;
265 break;
266 case 'w':
267 outmode = OUTMODE_FLN;
268 break;
269 default:
270 show_usage = 1;
271 break;
272 }
273 }
274
275 if (show_usage)
276 usage(search.argmode);
277
278 /* Postprocess options. */
279
280 if (outmode == OUTMODE_DEF) {
281 switch (search.argmode) {
282 case ARG_FILE:
283 outmode = OUTMODE_ALL;
284 use_pager = 0;
285 break;
286 case ARG_NAME:
287 outmode = OUTMODE_ONE;
288 break;
289 default:
290 outmode = OUTMODE_LST;
291 break;
292 }
293 }
294
295 if (outmode == OUTMODE_FLN ||
296 outmode == OUTMODE_LST ||
297 !isatty(STDOUT_FILENO))
298 use_pager = 0;
299
300 #if HAVE_PLEDGE
301 if (!use_pager)
302 if (pledge("stdio rpath flock", NULL) == -1)
303 err((int)MANDOCLEVEL_SYSERR, "pledge");
304 #endif
305
306 /* Parse arguments. */
307
308 if (argc > 0) {
309 argc -= optind;
310 argv += optind;
311 }
312 resp = NULL;
313
314 /*
315 * Quirks for help(1)
316 * and for a man(1) section argument without -s.
317 */
318
319 if (search.argmode == ARG_NAME) {
320 if (*progname == 'h') {
321 if (argc == 0) {
322 argv = help_argv;
323 argc = 1;
324 }
325 } else if (argc > 1 &&
326 ((uc = (unsigned char *)argv[0]) != NULL) &&
327 ((isdigit(uc[0]) && (uc[1] == '\0' ||
328 (isalpha(uc[1]) && uc[2] == '\0'))) ||
329 (uc[0] == 'n' && uc[1] == '\0'))) {
330 search.sec = (char *)uc;
331 argv++;
332 argc--;
333 }
334 if (search.arch == NULL)
335 search.arch = getenv("MACHINE");
336 #ifdef MACHINE
337 if (search.arch == NULL)
338 search.arch = MACHINE;
339 #endif
340 }
341
342 rc = MANDOCLEVEL_OK;
343
344 /* man(1), whatis(1), apropos(1) */
345
346 if (search.argmode != ARG_FILE) {
347 if (argc == 0)
348 usage(search.argmode);
349
350 if (search.argmode == ARG_NAME &&
351 outmode == OUTMODE_ONE)
352 search.firstmatch = 1;
353
354 /* Access the mandoc database. */
355
356 manconf_parse(&conf, conf_file, defpaths, auxpaths);
357 #if HAVE_SQLITE3
358 mansearch_setup(1);
359 if ( ! mansearch(&search, &conf.manpath,
360 argc, argv, &res, &sz))
361 usage(search.argmode);
362 #else
363 if (search.argmode != ARG_NAME) {
364 fputs("mandoc: database support not compiled in\n",
365 stderr);
366 return (int)MANDOCLEVEL_BADARG;
367 }
368 sz = 0;
369 #endif
370
371 if (sz == 0) {
372 if (search.argmode == ARG_NAME)
373 fs_search(&search, &conf.manpath,
374 argc, argv, &res, &sz);
375 else
376 warnx("nothing appropriate");
377 }
378
379 if (sz == 0) {
380 rc = MANDOCLEVEL_BADARG;
381 goto out;
382 }
383
384 /*
385 * For standard man(1) and -a output mode,
386 * prepare for copying filename pointers
387 * into the program parameter array.
388 */
389
390 if (outmode == OUTMODE_ONE) {
391 argc = 1;
392 best_prio = 10;
393 } else if (outmode == OUTMODE_ALL)
394 argc = (int)sz;
395
396 /* Iterate all matching manuals. */
397
398 resp = res;
399 for (i = 0; i < sz; i++) {
400 if (outmode == OUTMODE_FLN)
401 puts(res[i].file);
402 else if (outmode == OUTMODE_LST)
403 printf("%s - %s\n", res[i].names,
404 res[i].output == NULL ? "" :
405 res[i].output);
406 else if (outmode == OUTMODE_ONE) {
407 /* Search for the best section. */
408 isec = strcspn(res[i].file, "123456789");
409 sec = res[i].file[isec];
410 if ('\0' == sec)
411 continue;
412 prio = sec_prios[sec - '1'];
413 if (prio >= best_prio)
414 continue;
415 best_prio = prio;
416 resp = res + i;
417 }
418 }
419
420 /*
421 * For man(1), -a and -i output mode, fall through
422 * to the main mandoc(1) code iterating files
423 * and running the parsers on each of them.
424 */
425
426 if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
427 goto out;
428 }
429
430 /* mandoc(1) */
431
432 #if HAVE_PLEDGE
433 if (use_pager) {
434 if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
435 err((int)MANDOCLEVEL_SYSERR, "pledge");
436 } else {
437 if (pledge("stdio rpath", NULL) == -1)
438 err((int)MANDOCLEVEL_SYSERR, "pledge");
439 }
440 #endif
441
442 if (search.argmode == ARG_FILE && ! moptions(&options, auxpaths))
443 return (int)MANDOCLEVEL_BADARG;
444
445 mchars_alloc();
446 curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos);
447
448 /*
449 * Conditionally start up the lookaside buffer before parsing.
450 */
451 if (OUTT_MAN == curp.outtype)
452 mparse_keep(curp.mp);
453
454 if (argc < 1) {
455 if (use_pager)
456 tag_files = tag_init();
457 parse(&curp, STDIN_FILENO, "<stdin>");
458 }
459
460 while (argc > 0) {
461 fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv);
462 if (fd != -1) {
463 if (use_pager) {
464 tag_files = tag_init();
465 use_pager = 0;
466 }
467
468 if (resp == NULL)
469 parse(&curp, fd, *argv);
470 else if (resp->form & FORM_SRC) {
471 /* For .so only; ignore failure. */
472 chdir(conf.manpath.paths[resp->ipath]);
473 parse(&curp, fd, resp->file);
474 } else
475 passthrough(resp->file, fd,
476 conf.output.synopsisonly);
477
478 if (argc > 1 && curp.outtype <= OUTT_UTF8)
479 ascii_sepline(curp.outdata);
480 } else if (rc < MANDOCLEVEL_ERROR)
481 rc = MANDOCLEVEL_ERROR;
482
483 if (MANDOCLEVEL_OK != rc && curp.wstop)
484 break;
485
486 if (resp != NULL)
487 resp++;
488 else
489 argv++;
490 if (--argc)
491 mparse_reset(curp.mp);
492 }
493
494 if (curp.outdata != NULL) {
495 switch (curp.outtype) {
496 case OUTT_HTML:
497 html_free(curp.outdata);
498 break;
499 case OUTT_UTF8:
500 case OUTT_LOCALE:
501 case OUTT_ASCII:
502 ascii_free(curp.outdata);
503 break;
504 case OUTT_PDF:
505 case OUTT_PS:
506 pspdf_free(curp.outdata);
507 break;
508 default:
509 break;
510 }
511 }
512 mparse_free(curp.mp);
513 mchars_free();
514
515 out:
516 if (search.argmode != ARG_FILE) {
517 manconf_free(&conf);
518 #if HAVE_SQLITE3
519 mansearch_free(res, sz);
520 mansearch_setup(0);
521 #endif
522 }
523
524 free(defos);
525
526 /*
527 * When using a pager, finish writing both temporary files,
528 * fork it, wait for the user to close it, and clean up.
529 */
530
531 if (tag_files != NULL) {
532 fclose(stdout);
533 tag_write();
534 man_pgid = getpgid(0);
535 tag_files->tcpgid = man_pgid == getpid() ?
536 getpgid(getppid()) : man_pgid;
537 pager_pid = 0;
538 signum = SIGSTOP;
539 for (;;) {
540
541 /* Stop here until moved to the foreground. */
542
543 tc_pgid = tcgetpgrp(STDIN_FILENO);
544 if (tc_pgid != man_pgid) {
545 if (tc_pgid == pager_pid) {
546 (void)tcsetpgrp(STDIN_FILENO,
547 man_pgid);
548 if (signum == SIGTTIN)
549 continue;
550 } else
551 tag_files->tcpgid = tc_pgid;
552 kill(0, signum);
553 continue;
554 }
555
556 /* Once in the foreground, activate the pager. */
557
558 if (pager_pid) {
559 (void)tcsetpgrp(STDIN_FILENO, pager_pid);
560 kill(pager_pid, SIGCONT);
561 } else
562 pager_pid = spawn_pager(tag_files);
563
564 /* Wait for the pager to stop or exit. */
565
566 while ((pid = waitpid(pager_pid, &status,
567 WUNTRACED)) == -1 && errno == EINTR)
568 continue;
569
570 if (pid == -1) {
571 warn("wait");
572 rc = MANDOCLEVEL_SYSERR;
573 break;
574 }
575 if (!WIFSTOPPED(status))
576 break;
577
578 signum = WSTOPSIG(status);
579 }
580 tag_unlink();
581 }
582
583 return (int)rc;
584 }
585
586 static void
587 usage(enum argmode argmode)
588 {
589
590 switch (argmode) {
591 case ARG_FILE:
592 fputs("usage: mandoc [-acfhkl] [-I os=name] "
593 "[-K encoding] [-mformat] [-O option]\n"
594 "\t [-T output] [-W level] [file ...]\n", stderr);
595 break;
596 case ARG_NAME:
597 fputs("usage: man [-acfhklw] [-C file] [-I os=name] "
598 "[-K encoding] [-M path] [-m path]\n"
599 "\t [-O option=value] [-S subsection] [-s section] "
600 "[-T output] [-W level]\n"
601 "\t [section] name ...\n", stderr);
602 break;
603 case ARG_WORD:
604 fputs("usage: whatis [-acfhklw] [-C file] "
605 "[-M path] [-m path] [-O outkey] [-S arch]\n"
606 "\t [-s section] name ...\n", stderr);
607 break;
608 case ARG_EXPR:
609 fputs("usage: apropos [-acfhklw] [-C file] "
610 "[-M path] [-m path] [-O outkey] [-S arch]\n"
611 "\t [-s section] expression ...\n", stderr);
612 break;
613 }
614 exit((int)MANDOCLEVEL_BADARG);
615 }
616
617 static int
618 fs_lookup(const struct manpaths *paths, size_t ipath,
619 const char *sec, const char *arch, const char *name,
620 struct manpage **res, size_t *ressz)
621 {
622 glob_t globinfo;
623 struct manpage *page;
624 char *file;
625 int form, globres;
626
627 form = FORM_SRC;
628 mandoc_asprintf(&file, "%s/man%s/%s.%s",
629 paths->paths[ipath], sec, name, sec);
630 if (access(file, R_OK) != -1)
631 goto found;
632 free(file);
633
634 mandoc_asprintf(&file, "%s/cat%s/%s.0",
635 paths->paths[ipath], sec, name);
636 if (access(file, R_OK) != -1) {
637 form = FORM_CAT;
638 goto found;
639 }
640 free(file);
641
642 if (arch != NULL) {
643 mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
644 paths->paths[ipath], sec, arch, name, sec);
645 if (access(file, R_OK) != -1)
646 goto found;
647 free(file);
648 }
649
650 mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
651 paths->paths[ipath], sec, name);
652 globres = glob(file, 0, NULL, &globinfo);
653 if (globres != 0 && globres != GLOB_NOMATCH)
654 warn("%s: glob", file);
655 free(file);
656 if (globres == 0)
657 file = mandoc_strdup(*globinfo.gl_pathv);
658 globfree(&globinfo);
659 if (globres != 0)
660 return 0;
661
662 found:
663 #if HAVE_SQLITE3
664 warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",
665 name, sec, paths->paths[ipath]);
666 #endif
667 *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
668 page = *res + (*ressz - 1);
669 page->file = file;
670 page->names = NULL;
671 page->output = NULL;
672 page->ipath = ipath;
673 page->bits = NAME_FILE & NAME_MASK;
674 page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
675 page->form = form;
676 return 1;
677 }
678
679 static void
680 fs_search(const struct mansearch *cfg, const struct manpaths *paths,
681 int argc, char **argv, struct manpage **res, size_t *ressz)
682 {
683 const char *const sections[] =
684 {"1", "8", "6", "2", "3", "3p", "5", "7", "4", "9"};
685 const size_t nsec = sizeof(sections)/sizeof(sections[0]);
686
687 size_t ipath, isec, lastsz;
688
689 assert(cfg->argmode == ARG_NAME);
690
691 *res = NULL;
692 *ressz = lastsz = 0;
693 while (argc) {
694 for (ipath = 0; ipath < paths->sz; ipath++) {
695 if (cfg->sec != NULL) {
696 if (fs_lookup(paths, ipath, cfg->sec,
697 cfg->arch, *argv, res, ressz) &&
698 cfg->firstmatch)
699 return;
700 } else for (isec = 0; isec < nsec; isec++)
701 if (fs_lookup(paths, ipath, sections[isec],
702 cfg->arch, *argv, res, ressz) &&
703 cfg->firstmatch)
704 return;
705 }
706 if (*ressz == lastsz)
707 warnx("No entry for %s in the manual.", *argv);
708 lastsz = *ressz;
709 argv++;
710 argc--;
711 }
712 }
713
714 static void
715 parse(struct curparse *curp, int fd, const char *file)
716 {
717 enum mandoclevel rctmp;
718 struct roff_man *man;
719
720 /* Begin by parsing the file itself. */
721
722 assert(file);
723 assert(fd >= 0);
724
725 rctmp = mparse_readfd(curp->mp, fd, file);
726 if (fd != STDIN_FILENO)
727 close(fd);
728 if (rc < rctmp)
729 rc = rctmp;
730
731 /*
732 * With -Wstop and warnings or errors of at least the requested
733 * level, do not produce output.
734 */
735
736 if (rctmp != MANDOCLEVEL_OK && curp->wstop)
737 return;
738
739 /* If unset, allocate output dev now (if applicable). */
740
741 if (curp->outdata == NULL) {
742 switch (curp->outtype) {
743 case OUTT_HTML:
744 curp->outdata = html_alloc(curp->outopts);
745 break;
746 case OUTT_UTF8:
747 curp->outdata = utf8_alloc(curp->outopts);
748 break;
749 case OUTT_LOCALE:
750 curp->outdata = locale_alloc(curp->outopts);
751 break;
752 case OUTT_ASCII:
753 curp->outdata = ascii_alloc(curp->outopts);
754 break;
755 case OUTT_PDF:
756 curp->outdata = pdf_alloc(curp->outopts);
757 break;
758 case OUTT_PS:
759 curp->outdata = ps_alloc(curp->outopts);
760 break;
761 default:
762 break;
763 }
764 }
765
766 mparse_result(curp->mp, &man, NULL);
767
768 /* Execute the out device, if it exists. */
769
770 if (man == NULL)
771 return;
772 if (man->macroset == MACROSET_MDOC) {
773 mdoc_validate(man);
774 switch (curp->outtype) {
775 case OUTT_HTML:
776 html_mdoc(curp->outdata, man);
777 break;
778 case OUTT_TREE:
779 tree_mdoc(curp->outdata, man);
780 break;
781 case OUTT_MAN:
782 man_mdoc(curp->outdata, man);
783 break;
784 case OUTT_PDF:
785 case OUTT_ASCII:
786 case OUTT_UTF8:
787 case OUTT_LOCALE:
788 case OUTT_PS:
789 terminal_mdoc(curp->outdata, man);
790 break;
791 default:
792 break;
793 }
794 }
795 if (man->macroset == MACROSET_MAN) {
796 man_validate(man);
797 switch (curp->outtype) {
798 case OUTT_HTML:
799 html_man(curp->outdata, man);
800 break;
801 case OUTT_TREE:
802 tree_man(curp->outdata, man);
803 break;
804 case OUTT_MAN:
805 man_man(curp->outdata, man);
806 break;
807 case OUTT_PDF:
808 case OUTT_ASCII:
809 case OUTT_UTF8:
810 case OUTT_LOCALE:
811 case OUTT_PS:
812 terminal_man(curp->outdata, man);
813 break;
814 default:
815 break;
816 }
817 }
818 }
819
820 static void
821 passthrough(const char *file, int fd, int synopsis_only)
822 {
823 const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
824 const char synr[] = "SYNOPSIS";
825
826 FILE *stream;
827 const char *syscall;
828 char *line, *cp;
829 size_t linesz;
830 int print;
831
832 line = NULL;
833 linesz = 0;
834
835 if ((stream = fdopen(fd, "r")) == NULL) {
836 close(fd);
837 syscall = "fdopen";
838 goto fail;
839 }
840
841 print = 0;
842 while (getline(&line, &linesz, stream) != -1) {
843 cp = line;
844 if (synopsis_only) {
845 if (print) {
846 if ( ! isspace((unsigned char)*cp))
847 goto done;
848 while (isspace((unsigned char)*cp))
849 cp++;
850 } else {
851 if (strcmp(cp, synb) == 0 ||
852 strcmp(cp, synr) == 0)
853 print = 1;
854 continue;
855 }
856 }
857 if (fputs(cp, stdout)) {
858 fclose(stream);
859 syscall = "fputs";
860 goto fail;
861 }
862 }
863
864 if (ferror(stream)) {
865 fclose(stream);
866 syscall = "getline";
867 goto fail;
868 }
869
870 done:
871 free(line);
872 fclose(stream);
873 return;
874
875 fail:
876 free(line);
877 warn("%s: SYSERR: %s", file, syscall);
878 if (rc < MANDOCLEVEL_SYSERR)
879 rc = MANDOCLEVEL_SYSERR;
880 }
881
882 static int
883 koptions(int *options, char *arg)
884 {
885
886 if ( ! strcmp(arg, "utf-8")) {
887 *options |= MPARSE_UTF8;
888 *options &= ~MPARSE_LATIN1;
889 } else if ( ! strcmp(arg, "iso-8859-1")) {
890 *options |= MPARSE_LATIN1;
891 *options &= ~MPARSE_UTF8;
892 } else if ( ! strcmp(arg, "us-ascii")) {
893 *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
894 } else {
895 warnx("-K %s: Bad argument", arg);
896 return 0;
897 }
898 return 1;
899 }
900
901 static int
902 moptions(int *options, char *arg)
903 {
904
905 if (arg == NULL)
906 /* nothing to do */;
907 else if (0 == strcmp(arg, "doc"))
908 *options |= MPARSE_MDOC;
909 else if (0 == strcmp(arg, "andoc"))
910 /* nothing to do */;
911 else if (0 == strcmp(arg, "an"))
912 *options |= MPARSE_MAN;
913 else {
914 warnx("-m %s: Bad argument", arg);
915 return 0;
916 }
917
918 return 1;
919 }
920
921 static int
922 toptions(struct curparse *curp, char *arg)
923 {
924
925 if (0 == strcmp(arg, "ascii"))
926 curp->outtype = OUTT_ASCII;
927 else if (0 == strcmp(arg, "lint")) {
928 curp->outtype = OUTT_LINT;
929 curp->wlevel = MANDOCLEVEL_WARNING;
930 } else if (0 == strcmp(arg, "tree"))
931 curp->outtype = OUTT_TREE;
932 else if (0 == strcmp(arg, "man"))
933 curp->outtype = OUTT_MAN;
934 else if (0 == strcmp(arg, "html"))
935 curp->outtype = OUTT_HTML;
936 else if (0 == strcmp(arg, "utf8"))
937 curp->outtype = OUTT_UTF8;
938 else if (0 == strcmp(arg, "locale"))
939 curp->outtype = OUTT_LOCALE;
940 else if (0 == strcmp(arg, "xhtml"))
941 curp->outtype = OUTT_HTML;
942 else if (0 == strcmp(arg, "ps"))
943 curp->outtype = OUTT_PS;
944 else if (0 == strcmp(arg, "pdf"))
945 curp->outtype = OUTT_PDF;
946 else {
947 warnx("-T %s: Bad argument", arg);
948 return 0;
949 }
950
951 return 1;
952 }
953
954 static int
955 woptions(struct curparse *curp, char *arg)
956 {
957 char *v, *o;
958 const char *toks[7];
959
960 toks[0] = "stop";
961 toks[1] = "all";
962 toks[2] = "warning";
963 toks[3] = "error";
964 toks[4] = "unsupp";
965 toks[5] = "fatal";
966 toks[6] = NULL;
967
968 while (*arg) {
969 o = arg;
970 switch (getsubopt(&arg, UNCONST(toks), &v)) {
971 case 0:
972 curp->wstop = 1;
973 break;
974 case 1:
975 case 2:
976 curp->wlevel = MANDOCLEVEL_WARNING;
977 break;
978 case 3:
979 curp->wlevel = MANDOCLEVEL_ERROR;
980 break;
981 case 4:
982 curp->wlevel = MANDOCLEVEL_UNSUPP;
983 break;
984 case 5:
985 curp->wlevel = MANDOCLEVEL_BADARG;
986 break;
987 default:
988 warnx("-W %s: Bad argument", o);
989 return 0;
990 }
991 }
992
993 return 1;
994 }
995
996 static void
997 mmsg(enum mandocerr t, enum mandoclevel lvl,
998 const char *file, int line, int col, const char *msg)
999 {
1000 const char *mparse_msg;
1001
1002 fprintf(stderr, "%s: %s:", getprogname(), file);
1003
1004 if (line)
1005 fprintf(stderr, "%d:%d:", line, col + 1);
1006
1007 fprintf(stderr, " %s", mparse_strlevel(lvl));
1008
1009 if (NULL != (mparse_msg = mparse_strerror(t)))
1010 fprintf(stderr, ": %s", mparse_msg);
1011
1012 if (msg)
1013 fprintf(stderr, ": %s", msg);
1014
1015 fputc('\n', stderr);
1016 }
1017
1018 static pid_t
1019 spawn_pager(struct tag_files *tag_files)
1020 {
1021 #define MAX_PAGER_ARGS 16
1022 char *argv[MAX_PAGER_ARGS];
1023 const char *pager;
1024 char *cp;
1025 size_t cmdlen;
1026 int argc;
1027 pid_t pager_pid;
1028
1029 pager = getenv("MANPAGER");
1030 if (pager == NULL || *pager == '\0')
1031 pager = getenv("PAGER");
1032 if (pager == NULL || *pager == '\0')
1033 pager = "more -s";
1034 cp = mandoc_strdup(pager);
1035
1036 /*
1037 * Parse the pager command into words.
1038 * Intentionally do not do anything fancy here.
1039 */
1040
1041 argc = 0;
1042 while (argc + 4 < MAX_PAGER_ARGS) {
1043 argv[argc++] = cp;
1044 cp = strchr(cp, ' ');
1045 if (cp == NULL)
1046 break;
1047 *cp++ = '\0';
1048 while (*cp == ' ')
1049 cp++;
1050 if (*cp == '\0')
1051 break;
1052 }
1053
1054 /* For more(1) and less(1), use the tag file. */
1055
1056 if ((cmdlen = strlen(argv[0])) >= 4) {
1057 cp = argv[0] + cmdlen - 4;
1058 if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1059 argv[argc++] = mandoc_strdup("-T");
1060 argv[argc++] = tag_files->tfn;
1061 }
1062 }
1063 argv[argc++] = tag_files->ofn;
1064 argv[argc] = NULL;
1065
1066 switch (pager_pid = fork()) {
1067 case -1:
1068 err((int)MANDOCLEVEL_SYSERR, "fork");
1069 case 0:
1070 /* Set pgrp in both parent and child to avoid racing exec. */
1071 (void)setpgid(0, 0);
1072 break;
1073 default:
1074 (void)setpgid(pager_pid, 0);
1075 (void)tcsetpgrp(STDIN_FILENO, pager_pid);
1076 #if HAVE_PLEDGE
1077 if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1078 err((int)MANDOCLEVEL_SYSERR, "pledge");
1079 #endif
1080 tag_files->pager_pid = pager_pid;
1081 return pager_pid;
1082 }
1083
1084 /* The child process becomes the pager. */
1085
1086 if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1087 err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1088 close(tag_files->ofd);
1089 close(tag_files->tfd);
1090 execvp(argv[0], argv);
1091 err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1092 }
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