1 /* Id: read.c,v 1.40 2014/01/02 16:29:55 schwarze Exp */
2 /*
3 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
21
22 #ifdef HAVE_MMAP
23 # include <sys/stat.h>
24 # include <sys/mman.h>
25 #endif
26
27 #include <assert.h>
28 #include <ctype.h>
29 #include <errno.h>
30 #include <fcntl.h>
31 #include <stdarg.h>
32 #include <stdint.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <unistd.h>
37
38 #include "mandoc.h"
39 #include "libmandoc.h"
40 #include "mdoc.h"
41 #include "man.h"
42 #include "main.h"
43
44 #define REPARSE_LIMIT 1000
45
46 struct buf {
47 char *buf; /* binary input buffer */
48 size_t sz; /* size of binary buffer */
49 };
50
51 struct mparse {
52 enum mandoclevel file_status; /* status of current parse */
53 enum mandoclevel wlevel; /* ignore messages below this */
54 int line; /* line number in the file */
55 enum mparset inttype; /* which parser to use */
56 struct man *pman; /* persistent man parser */
57 struct mdoc *pmdoc; /* persistent mdoc parser */
58 struct man *man; /* man parser */
59 struct mdoc *mdoc; /* mdoc parser */
60 struct roff *roff; /* roff parser (!NULL) */
61 int reparse_count; /* finite interp. stack */
62 mandocmsg mmsg; /* warning/error message handler */
63 void *arg; /* argument to mmsg */
64 const char *file;
65 struct buf *secondary;
66 char *defos; /* default operating system */
67 };
68
69 static void resize_buf(struct buf *, size_t);
70 static void mparse_buf_r(struct mparse *, struct buf, int);
71 static void pset(const char *, int, struct mparse *);
72 static int read_whole_file(struct mparse *, const char *, int,
73 struct buf *, int *);
74 static void mparse_end(struct mparse *);
75 static void mparse_parse_buffer(struct mparse *, struct buf,
76 const char *);
77
78 static const enum mandocerr mandoclimits[MANDOCLEVEL_MAX] = {
79 MANDOCERR_OK,
80 MANDOCERR_WARNING,
81 MANDOCERR_WARNING,
82 MANDOCERR_ERROR,
83 MANDOCERR_FATAL,
84 MANDOCERR_MAX,
85 MANDOCERR_MAX
86 };
87
88 static const char * const mandocerrs[MANDOCERR_MAX] = {
89 "ok",
90
91 "generic warning",
92
93 /* related to the prologue */
94 "no title in document",
95 "document title should be all caps",
96 "unknown manual section",
97 "unknown manual volume or arch",
98 "date missing, using today's date",
99 "cannot parse date, using it verbatim",
100 "prologue macros out of order",
101 "duplicate prologue macro",
102 "macro not allowed in prologue",
103 "macro not allowed in body",
104
105 /* related to document structure */
106 ".so is fragile, better use ln(1)",
107 "NAME section must come first",
108 "bad NAME section contents",
109 "sections out of conventional order",
110 "duplicate section name",
111 "section header suited to sections 2, 3, and 9 only",
112
113 /* related to macros and nesting */
114 "skipping obsolete macro",
115 "skipping paragraph macro",
116 "moving paragraph macro out of list",
117 "skipping no-space macro",
118 "blocks badly nested",
119 "child violates parent syntax",
120 "nested displays are not portable",
121 "already in literal mode",
122 "line scope broken",
123
124 /* related to missing macro arguments */
125 "skipping empty macro",
126 "argument count wrong",
127 "missing display type",
128 "list type must come first",
129 "tag lists require a width argument",
130 "missing font type",
131 "skipping end of block that is not open",
132
133 /* related to bad macro arguments */
134 "skipping argument",
135 "duplicate argument",
136 "duplicate display type",
137 "duplicate list type",
138 "unknown AT&T UNIX version",
139 "bad Boolean value",
140 "unknown font",
141 "unknown standard specifier",
142 "bad width argument",
143
144 /* related to plain text */
145 "blank line in non-literal context",
146 "tab in non-literal context",
147 "end of line whitespace",
148 "bad comment style",
149 "bad escape sequence",
150 "unterminated quoted string",
151
152 /* related to equations */
153 "unexpected literal in equation",
154
155 "generic error",
156
157 /* related to equations */
158 "unexpected equation scope closure",
159 "equation scope open on exit",
160 "overlapping equation scopes",
161 "unexpected end of equation",
162 "equation syntax error",
163
164 /* related to tables */
165 "bad table syntax",
166 "bad table option",
167 "bad table layout",
168 "no table layout cells specified",
169 "no table data cells specified",
170 "ignore data in cell",
171 "data block still open",
172 "ignoring extra data cells",
173
174 "input stack limit exceeded, infinite loop?",
175 "skipping bad character",
176 "escaped character not allowed in a name",
177 "manual name not yet set",
178 "skipping text before the first section header",
179 "skipping unknown macro",
180 "NOT IMPLEMENTED, please use groff: skipping request",
181 "argument count wrong",
182 "skipping column outside column list",
183 "skipping end of block that is not open",
184 "missing end of block",
185 "scope open on exit",
186 "uname(3) system call failed",
187 "macro requires line argument(s)",
188 "macro requires body argument(s)",
189 "macro requires argument(s)",
190 "request requires a numeric argument",
191 "missing list type",
192 "line argument(s) will be lost",
193 "body argument(s) will be lost",
194
195 "generic fatal error",
196
197 "input too large",
198 "not a manual",
199 "column syntax is inconsistent",
200 "NOT IMPLEMENTED: .Bd -file",
201 "argument count wrong, violates syntax",
202 "child violates parent syntax",
203 "argument count wrong, violates syntax",
204 "NOT IMPLEMENTED: .so with absolute path or \"..\"",
205 "no document body",
206 "no document prologue",
207 "static buffer exhausted",
208
209 /* system errors */
210 "cannot open file",
211 "cannot stat file",
212 "cannot read file",
213 };
214
215 static const char * const mandoclevels[MANDOCLEVEL_MAX] = {
216 "SUCCESS",
217 "RESERVED",
218 "WARNING",
219 "ERROR",
220 "FATAL",
221 "BADARG",
222 "SYSERR"
223 };
224
225 static void
resize_buf(struct buf * buf,size_t initial)226 resize_buf(struct buf *buf, size_t initial)
227 {
228
229 buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
230 buf->buf = mandoc_realloc(buf->buf, buf->sz);
231 }
232
233 static void
pset(const char * buf,int pos,struct mparse * curp)234 pset(const char *buf, int pos, struct mparse *curp)
235 {
236 int i;
237
238 /*
239 * Try to intuit which kind of manual parser should be used. If
240 * passed in by command-line (-man, -mdoc), then use that
241 * explicitly. If passed as -mandoc, then try to guess from the
242 * line: either skip dot-lines, use -mdoc when finding `.Dt', or
243 * default to -man, which is more lenient.
244 *
245 * Separate out pmdoc/pman from mdoc/man: the first persists
246 * through all parsers, while the latter is used per-parse.
247 */
248
249 if ('.' == buf[0] || '\'' == buf[0]) {
250 for (i = 1; buf[i]; i++)
251 if (' ' != buf[i] && '\t' != buf[i])
252 break;
253 if ('\0' == buf[i])
254 return;
255 }
256
257 switch (curp->inttype) {
258 case (MPARSE_MDOC):
259 if (NULL == curp->pmdoc)
260 curp->pmdoc = mdoc_alloc(curp->roff, curp,
261 curp->defos);
262 assert(curp->pmdoc);
263 curp->mdoc = curp->pmdoc;
264 return;
265 case (MPARSE_MAN):
266 if (NULL == curp->pman)
267 curp->pman = man_alloc(curp->roff, curp);
268 assert(curp->pman);
269 curp->man = curp->pman;
270 return;
271 default:
272 break;
273 }
274
275 if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) {
276 if (NULL == curp->pmdoc)
277 curp->pmdoc = mdoc_alloc(curp->roff, curp,
278 curp->defos);
279 assert(curp->pmdoc);
280 curp->mdoc = curp->pmdoc;
281 return;
282 }
283
284 if (NULL == curp->pman)
285 curp->pman = man_alloc(curp->roff, curp);
286 assert(curp->pman);
287 curp->man = curp->pman;
288 }
289
290 /*
291 * Main parse routine for an opened file. This is called for each
292 * opened file and simply loops around the full input file, possibly
293 * nesting (i.e., with `so').
294 */
295 static void
mparse_buf_r(struct mparse * curp,struct buf blk,int start)296 mparse_buf_r(struct mparse *curp, struct buf blk, int start)
297 {
298 const struct tbl_span *span;
299 struct buf ln;
300 enum rofferr rr;
301 int i, of, rc;
302 int pos; /* byte number in the ln buffer */
303 int lnn; /* line number in the real file */
304 unsigned char c;
305
306 memset(&ln, 0, sizeof(struct buf));
307
308 lnn = curp->line;
309 pos = 0;
310
311 for (i = 0; i < (int)blk.sz; ) {
312 if (0 == pos && '\0' == blk.buf[i])
313 break;
314
315 if (start) {
316 curp->line = lnn;
317 curp->reparse_count = 0;
318 }
319
320 while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
321
322 /*
323 * When finding an unescaped newline character,
324 * leave the character loop to process the line.
325 * Skip a preceding carriage return, if any.
326 */
327
328 if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz &&
329 '\n' == blk.buf[i + 1])
330 ++i;
331 if ('\n' == blk.buf[i]) {
332 ++i;
333 ++lnn;
334 break;
335 }
336
337 /*
338 * Make sure we have space for at least
339 * one backslash and one other character
340 * and the trailing NUL byte.
341 */
342
343 if (pos + 2 >= (int)ln.sz)
344 resize_buf(&ln, 256);
345
346 /*
347 * Warn about bogus characters. If you're using
348 * non-ASCII encoding, you're screwing your
349 * readers. Since I'd rather this not happen,
350 * I'll be helpful and replace these characters
351 * with "?", so we don't display gibberish.
352 * Note to manual writers: use special characters.
353 */
354
355 c = (unsigned char) blk.buf[i];
356
357 if ( ! (isascii(c) &&
358 (isgraph(c) || isblank(c)))) {
359 mandoc_msg(MANDOCERR_BADCHAR, curp,
360 curp->line, pos, NULL);
361 i++;
362 ln.buf[pos++] = '?';
363 continue;
364 }
365
366 /* Trailing backslash = a plain char. */
367
368 if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
369 ln.buf[pos++] = blk.buf[i++];
370 continue;
371 }
372
373 /*
374 * Found escape and at least one other character.
375 * When it's a newline character, skip it.
376 * When there is a carriage return in between,
377 * skip that one as well.
378 */
379
380 if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz &&
381 '\n' == blk.buf[i + 2])
382 ++i;
383 if ('\n' == blk.buf[i + 1]) {
384 i += 2;
385 ++lnn;
386 continue;
387 }
388
389 if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
390 i += 2;
391 /* Comment, skip to end of line */
392 for (; i < (int)blk.sz; ++i) {
393 if ('\n' == blk.buf[i]) {
394 ++i;
395 ++lnn;
396 break;
397 }
398 }
399
400 /* Backout trailing whitespaces */
401 for (; pos > 0; --pos) {
402 if (ln.buf[pos - 1] != ' ')
403 break;
404 if (pos > 2 && ln.buf[pos - 2] == '\\')
405 break;
406 }
407 break;
408 }
409
410 /* Catch escaped bogus characters. */
411
412 c = (unsigned char) blk.buf[i+1];
413
414 if ( ! (isascii(c) &&
415 (isgraph(c) || isblank(c)))) {
416 mandoc_msg(MANDOCERR_BADCHAR, curp,
417 curp->line, pos, NULL);
418 i += 2;
419 ln.buf[pos++] = '?';
420 continue;
421 }
422
423 /* Some other escape sequence, copy & cont. */
424
425 ln.buf[pos++] = blk.buf[i++];
426 ln.buf[pos++] = blk.buf[i++];
427 }
428
429 if (pos >= (int)ln.sz)
430 resize_buf(&ln, 256);
431
432 ln.buf[pos] = '\0';
433
434 /*
435 * A significant amount of complexity is contained by
436 * the roff preprocessor. It's line-oriented but can be
437 * expressed on one line, so we need at times to
438 * readjust our starting point and re-run it. The roff
439 * preprocessor can also readjust the buffers with new
440 * data, so we pass them in wholesale.
441 */
442
443 of = 0;
444
445 /*
446 * Maintain a lookaside buffer of all parsed lines. We
447 * only do this if mparse_keep() has been invoked (the
448 * buffer may be accessed with mparse_getkeep()).
449 */
450
451 if (curp->secondary) {
452 curp->secondary->buf =
453 mandoc_realloc
454 (curp->secondary->buf,
455 curp->secondary->sz + pos + 2);
456 memcpy(curp->secondary->buf +
457 curp->secondary->sz,
458 ln.buf, pos);
459 curp->secondary->sz += pos;
460 curp->secondary->buf
461 [curp->secondary->sz] = '\n';
462 curp->secondary->sz++;
463 curp->secondary->buf
464 [curp->secondary->sz] = '\0';
465 }
466 rerun:
467 rr = roff_parseln
468 (curp->roff, curp->line,
469 &ln.buf, &ln.sz, of, &of);
470
471 switch (rr) {
472 case (ROFF_REPARSE):
473 if (REPARSE_LIMIT >= ++curp->reparse_count)
474 mparse_buf_r(curp, ln, 0);
475 else
476 mandoc_msg(MANDOCERR_ROFFLOOP, curp,
477 curp->line, pos, NULL);
478 pos = 0;
479 continue;
480 case (ROFF_APPEND):
481 pos = (int)strlen(ln.buf);
482 continue;
483 case (ROFF_RERUN):
484 goto rerun;
485 case (ROFF_IGN):
486 pos = 0;
487 continue;
488 case (ROFF_ERR):
489 assert(MANDOCLEVEL_FATAL <= curp->file_status);
490 break;
491 case (ROFF_SO):
492 /*
493 * We remove `so' clauses from our lookaside
494 * buffer because we're going to descend into
495 * the file recursively.
496 */
497 if (curp->secondary)
498 curp->secondary->sz -= pos + 1;
499 mparse_readfd(curp, -1, ln.buf + of);
500 if (MANDOCLEVEL_FATAL <= curp->file_status)
501 break;
502 pos = 0;
503 continue;
504 default:
505 break;
506 }
507
508 /*
509 * If we encounter errors in the recursive parse, make
510 * sure we don't continue parsing.
511 */
512
513 if (MANDOCLEVEL_FATAL <= curp->file_status)
514 break;
515
516 /*
517 * If input parsers have not been allocated, do so now.
518 * We keep these instanced between parsers, but set them
519 * locally per parse routine since we can use different
520 * parsers with each one.
521 */
522
523 if ( ! (curp->man || curp->mdoc))
524 pset(ln.buf + of, pos - of, curp);
525
526 /*
527 * Lastly, push down into the parsers themselves. One
528 * of these will have already been set in the pset()
529 * routine.
530 * If libroff returns ROFF_TBL, then add it to the
531 * currently open parse. Since we only get here if
532 * there does exist data (see tbl_data.c), we're
533 * guaranteed that something's been allocated.
534 * Do the same for ROFF_EQN.
535 */
536
537 rc = -1;
538
539 if (ROFF_TBL == rr)
540 while (NULL != (span = roff_span(curp->roff))) {
541 rc = curp->man ?
542 man_addspan(curp->man, span) :
543 mdoc_addspan(curp->mdoc, span);
544 if (0 == rc)
545 break;
546 }
547 else if (ROFF_EQN == rr)
548 rc = curp->mdoc ?
549 mdoc_addeqn(curp->mdoc,
550 roff_eqn(curp->roff)) :
551 man_addeqn(curp->man,
552 roff_eqn(curp->roff));
553 else if (curp->man || curp->mdoc)
554 rc = curp->man ?
555 man_parseln(curp->man,
556 curp->line, ln.buf, of) :
557 mdoc_parseln(curp->mdoc,
558 curp->line, ln.buf, of);
559
560 if (0 == rc) {
561 assert(MANDOCLEVEL_FATAL <= curp->file_status);
562 break;
563 }
564
565 /* Temporary buffers typically are not full. */
566
567 if (0 == start && '\0' == blk.buf[i])
568 break;
569
570 /* Start the next input line. */
571
572 pos = 0;
573 }
574
575 free(ln.buf);
576 }
577
578 static int
read_whole_file(struct mparse * curp,const char * file,int fd,struct buf * fb,int * with_mmap)579 read_whole_file(struct mparse *curp, const char *file, int fd,
580 struct buf *fb, int *with_mmap)
581 {
582 size_t off;
583 ssize_t ssz;
584
585 #ifdef HAVE_MMAP
586 struct stat st;
587 if (-1 == fstat(fd, &st)) {
588 curp->file_status = MANDOCLEVEL_SYSERR;
589 if (curp->mmsg)
590 (*curp->mmsg)(MANDOCERR_SYSSTAT, curp->file_status,
591 file, 0, 0, strerror(errno));
592 return(0);
593 }
594
595 /*
596 * If we're a regular file, try just reading in the whole entry
597 * via mmap(). This is faster than reading it into blocks, and
598 * since each file is only a few bytes to begin with, I'm not
599 * concerned that this is going to tank any machines.
600 */
601
602 if (S_ISREG(st.st_mode)) {
603 if (st.st_size >= (1U << 31)) {
604 curp->file_status = MANDOCLEVEL_FATAL;
605 if (curp->mmsg)
606 (*curp->mmsg)(MANDOCERR_TOOLARGE,
607 curp->file_status, file, 0, 0, NULL);
608 return(0);
609 }
610 *with_mmap = 1;
611 fb->sz = (size_t)st.st_size;
612 fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0);
613 if (fb->buf != MAP_FAILED)
614 return(1);
615 }
616 #endif
617
618 /*
619 * If this isn't a regular file (like, say, stdin), then we must
620 * go the old way and just read things in bit by bit.
621 */
622
623 *with_mmap = 0;
624 off = 0;
625 fb->sz = 0;
626 fb->buf = NULL;
627 for (;;) {
628 if (off == fb->sz) {
629 if (fb->sz == (1U << 31)) {
630 curp->file_status = MANDOCLEVEL_FATAL;
631 if (curp->mmsg)
632 (*curp->mmsg)(MANDOCERR_TOOLARGE,
633 curp->file_status,
634 file, 0, 0, NULL);
635 break;
636 }
637 resize_buf(fb, 65536);
638 }
639 ssz = read(fd, fb->buf + (int)off, fb->sz - off);
640 if (ssz == 0) {
641 fb->sz = off;
642 return(1);
643 }
644 if (ssz == -1) {
645 curp->file_status = MANDOCLEVEL_SYSERR;
646 if (curp->mmsg)
647 (*curp->mmsg)(MANDOCERR_SYSREAD,
648 curp->file_status, file, 0, 0,
649 strerror(errno));
650 break;
651 }
652 off += (size_t)ssz;
653 }
654
655 free(fb->buf);
656 fb->buf = NULL;
657 return(0);
658 }
659
660 static void
mparse_end(struct mparse * curp)661 mparse_end(struct mparse *curp)
662 {
663
664 if (MANDOCLEVEL_FATAL <= curp->file_status)
665 return;
666
667 if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {
668 assert(MANDOCLEVEL_FATAL <= curp->file_status);
669 return;
670 }
671
672 if (curp->man && ! man_endparse(curp->man)) {
673 assert(MANDOCLEVEL_FATAL <= curp->file_status);
674 return;
675 }
676
677 if ( ! (curp->man || curp->mdoc)) {
678 mandoc_msg(MANDOCERR_NOTMANUAL, curp, 1, 0, NULL);
679 curp->file_status = MANDOCLEVEL_FATAL;
680 return;
681 }
682
683 roff_endparse(curp->roff);
684 }
685
686 static void
mparse_parse_buffer(struct mparse * curp,struct buf blk,const char * file)687 mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)
688 {
689 const char *svfile;
690 static int recursion_depth;
691
692 if (64 < recursion_depth) {
693 mandoc_msg(MANDOCERR_ROFFLOOP, curp, curp->line, 0, NULL);
694 return;
695 }
696
697 /* Line number is per-file. */
698 svfile = curp->file;
699 curp->file = file;
700 curp->line = 1;
701 recursion_depth++;
702
703 mparse_buf_r(curp, blk, 1);
704
705 if (0 == --recursion_depth && MANDOCLEVEL_FATAL > curp->file_status)
706 mparse_end(curp);
707
708 curp->file = svfile;
709 }
710
711 enum mandoclevel
mparse_readmem(struct mparse * curp,const void * buf,size_t len,const char * file)712 mparse_readmem(struct mparse *curp, const void *buf, size_t len,
713 const char *file)
714 {
715 struct buf blk;
716
717 blk.buf = UNCONST(buf);
718 blk.sz = len;
719
720 mparse_parse_buffer(curp, blk, file);
721 return(curp->file_status);
722 }
723
724 enum mandoclevel
mparse_readfd(struct mparse * curp,int fd,const char * file)725 mparse_readfd(struct mparse *curp, int fd, const char *file)
726 {
727 struct buf blk;
728 int with_mmap;
729
730 if (-1 == fd && -1 == (fd = open(file, O_RDONLY, 0))) {
731 curp->file_status = MANDOCLEVEL_SYSERR;
732 if (curp->mmsg)
733 (*curp->mmsg)(MANDOCERR_SYSOPEN,
734 curp->file_status,
735 file, 0, 0, strerror(errno));
736 goto out;
737 }
738
739 /*
740 * Run for each opened file; may be called more than once for
741 * each full parse sequence if the opened file is nested (i.e.,
742 * from `so'). Simply sucks in the whole file and moves into
743 * the parse phase for the file.
744 */
745
746 if ( ! read_whole_file(curp, file, fd, &blk, &with_mmap))
747 goto out;
748
749 mparse_parse_buffer(curp, blk, file);
750
751 #ifdef HAVE_MMAP
752 if (with_mmap)
753 munmap(blk.buf, blk.sz);
754 else
755 #endif
756 free(blk.buf);
757
758 if (STDIN_FILENO != fd && -1 == close(fd))
759 perror(file);
760 out:
761 return(curp->file_status);
762 }
763
764 struct mparse *
mparse_alloc(enum mparset inttype,enum mandoclevel wlevel,mandocmsg mmsg,void * arg,char * defos)765 mparse_alloc(enum mparset inttype, enum mandoclevel wlevel,
766 mandocmsg mmsg, void *arg, char *defos)
767 {
768 struct mparse *curp;
769
770 assert(wlevel <= MANDOCLEVEL_FATAL);
771
772 curp = mandoc_calloc(1, sizeof(struct mparse));
773
774 curp->wlevel = wlevel;
775 curp->mmsg = mmsg;
776 curp->arg = arg;
777 curp->inttype = inttype;
778 curp->defos = defos;
779
780 curp->roff = roff_alloc(inttype, curp);
781 return(curp);
782 }
783
784 void
mparse_reset(struct mparse * curp)785 mparse_reset(struct mparse *curp)
786 {
787
788 roff_reset(curp->roff);
789
790 if (curp->mdoc)
791 mdoc_reset(curp->mdoc);
792 if (curp->man)
793 man_reset(curp->man);
794 if (curp->secondary)
795 curp->secondary->sz = 0;
796
797 curp->file_status = MANDOCLEVEL_OK;
798 curp->mdoc = NULL;
799 curp->man = NULL;
800 }
801
802 void
mparse_free(struct mparse * curp)803 mparse_free(struct mparse *curp)
804 {
805
806 if (curp->pmdoc)
807 mdoc_free(curp->pmdoc);
808 if (curp->pman)
809 man_free(curp->pman);
810 if (curp->roff)
811 roff_free(curp->roff);
812 if (curp->secondary)
813 free(curp->secondary->buf);
814
815 free(curp->secondary);
816 free(curp);
817 }
818
819 void
mparse_result(struct mparse * curp,struct mdoc ** mdoc,struct man ** man)820 mparse_result(struct mparse *curp, struct mdoc **mdoc, struct man **man)
821 {
822
823 if (mdoc)
824 *mdoc = curp->mdoc;
825 if (man)
826 *man = curp->man;
827 }
828
829 void
mandoc_vmsg(enum mandocerr t,struct mparse * m,int ln,int pos,const char * fmt,...)830 mandoc_vmsg(enum mandocerr t, struct mparse *m,
831 int ln, int pos, const char *fmt, ...)
832 {
833 char buf[256];
834 va_list ap;
835
836 va_start(ap, fmt);
837 vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
838 va_end(ap);
839
840 mandoc_msg(t, m, ln, pos, buf);
841 }
842
843 void
mandoc_msg(enum mandocerr er,struct mparse * m,int ln,int col,const char * msg)844 mandoc_msg(enum mandocerr er, struct mparse *m,
845 int ln, int col, const char *msg)
846 {
847 enum mandoclevel level;
848
849 level = MANDOCLEVEL_FATAL;
850 while (er < mandoclimits[level])
851 level--;
852
853 if (level < m->wlevel)
854 return;
855
856 if (m->mmsg)
857 (*m->mmsg)(er, level, m->file, ln, col, msg);
858
859 if (m->file_status < level)
860 m->file_status = level;
861 }
862
863 const char *
mparse_strerror(enum mandocerr er)864 mparse_strerror(enum mandocerr er)
865 {
866
867 return(mandocerrs[er]);
868 }
869
870 const char *
mparse_strlevel(enum mandoclevel lvl)871 mparse_strlevel(enum mandoclevel lvl)
872 {
873 return(mandoclevels[lvl]);
874 }
875
876 void
mparse_keep(struct mparse * p)877 mparse_keep(struct mparse *p)
878 {
879
880 assert(NULL == p->secondary);
881 p->secondary = mandoc_calloc(1, sizeof(struct buf));
882 }
883
884 const char *
mparse_getkeep(const struct mparse * p)885 mparse_getkeep(const struct mparse *p)
886 {
887
888 assert(p->secondary);
889 return(p->secondary->sz ? p->secondary->buf : NULL);
890 }
891