Annotation of src/usr.bin/mandoc/read.c, Revision 1.7
1.7 ! schwarze 1: /* $Id: read.c,v 1.6 2012/02/26 21:01:43 schwarze Exp $ */
1.1 schwarze 2: /*
3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4: * Copyright (c) 2010, 2011 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: #include <sys/stat.h>
19: #include <sys/mman.h>
20:
21: #include <assert.h>
22: #include <ctype.h>
23: #include <fcntl.h>
24: #include <stdarg.h>
25: #include <stdio.h>
26: #include <stdlib.h>
27: #include <string.h>
28: #include <unistd.h>
29:
30: #include "mandoc.h"
31: #include "libmandoc.h"
32: #include "mdoc.h"
33: #include "man.h"
34:
35: #define REPARSE_LIMIT 1000
36:
37: struct buf {
38: char *buf; /* binary input buffer */
39: size_t sz; /* size of binary buffer */
40: };
41:
42: struct mparse {
43: enum mandoclevel file_status; /* status of current parse */
44: enum mandoclevel wlevel; /* ignore messages below this */
45: int line; /* line number in the file */
46: enum mparset inttype; /* which parser to use */
47: struct man *pman; /* persistent man parser */
48: struct mdoc *pmdoc; /* persistent mdoc parser */
49: struct man *man; /* man parser */
50: struct mdoc *mdoc; /* mdoc parser */
51: struct roff *roff; /* roff parser (!NULL) */
52: int reparse_count; /* finite interp. stack */
53: mandocmsg mmsg; /* warning/error message handler */
54: void *arg; /* argument to mmsg */
55: const char *file;
1.4 schwarze 56: struct buf *secondary;
1.7 ! schwarze 57: char *defos; /* default operating system */
1.1 schwarze 58: };
59:
60: static void resize_buf(struct buf *, size_t);
61: static void mparse_buf_r(struct mparse *, struct buf, int);
62: static void mparse_readfd_r(struct mparse *, int, const char *, int);
63: static void pset(const char *, int, struct mparse *);
64: static void pdesc(struct mparse *, const char *, int);
65: static int read_whole_file(const char *, int, struct buf *, int *);
66: static void mparse_end(struct mparse *);
67:
68: static const enum mandocerr mandoclimits[MANDOCLEVEL_MAX] = {
69: MANDOCERR_OK,
70: MANDOCERR_WARNING,
71: MANDOCERR_WARNING,
72: MANDOCERR_ERROR,
73: MANDOCERR_FATAL,
74: MANDOCERR_MAX,
75: MANDOCERR_MAX
76: };
77:
78: static const char * const mandocerrs[MANDOCERR_MAX] = {
79: "ok",
80:
81: "generic warning",
82:
83: /* related to the prologue */
84: "no title in document",
85: "document title should be all caps",
86: "unknown manual section",
87: "date missing, using today's date",
88: "cannot parse date, using it verbatim",
89: "prologue macros out of order",
90: "duplicate prologue macro",
91: "macro not allowed in prologue",
92: "macro not allowed in body",
93:
94: /* related to document structure */
95: ".so is fragile, better use ln(1)",
96: "NAME section must come first",
97: "bad NAME section contents",
98: "manual name not yet set",
99: "sections out of conventional order",
100: "duplicate section name",
101: "section not in conventional manual section",
102:
103: /* related to macros and nesting */
104: "skipping obsolete macro",
105: "skipping paragraph macro",
106: "skipping no-space macro",
107: "blocks badly nested",
108: "child violates parent syntax",
109: "nested displays are not portable",
110: "already in literal mode",
111: "line scope broken",
112:
113: /* related to missing macro arguments */
114: "skipping empty macro",
115: "argument count wrong",
116: "missing display type",
117: "list type must come first",
118: "tag lists require a width argument",
119: "missing font type",
120: "skipping end of block that is not open",
121:
122: /* related to bad macro arguments */
123: "skipping argument",
124: "duplicate argument",
125: "duplicate display type",
126: "duplicate list type",
127: "unknown AT&T UNIX version",
128: "bad Boolean value",
129: "unknown font",
130: "unknown standard specifier",
131: "bad width argument",
132:
133: /* related to plain text */
134: "blank line in non-literal context",
135: "tab in non-literal context",
136: "end of line whitespace",
137: "bad comment style",
1.2 schwarze 138: "bad escape sequence",
1.1 schwarze 139: "unterminated quoted string",
1.3 schwarze 140:
141: /* related to equations */
142: "unexpected literal in equation",
1.1 schwarze 143:
144: "generic error",
145:
1.3 schwarze 146: /* related to equations */
147: "unexpected equation scope closure",
148: "equation scope open on exit",
149: "overlapping equation scopes",
150: "unexpected end of equation",
151: "equation syntax error",
152:
1.1 schwarze 153: /* related to tables */
154: "bad table syntax",
155: "bad table option",
156: "bad table layout",
157: "no table layout cells specified",
158: "no table data cells specified",
159: "ignore data in cell",
160: "data block still open",
161: "ignoring extra data cells",
162:
163: "input stack limit exceeded, infinite loop?",
164: "skipping bad character",
165: "escaped character not allowed in a name",
166: "skipping text before the first section header",
167: "skipping unknown macro",
168: "NOT IMPLEMENTED, please use groff: skipping request",
169: "argument count wrong",
170: "skipping end of block that is not open",
171: "missing end of block",
172: "scope open on exit",
173: "uname(3) system call failed",
174: "macro requires line argument(s)",
175: "macro requires body argument(s)",
176: "macro requires argument(s)",
177: "missing list type",
178: "line argument(s) will be lost",
179: "body argument(s) will be lost",
180:
181: "generic fatal error",
182:
183: "not a manual",
184: "column syntax is inconsistent",
185: "NOT IMPLEMENTED: .Bd -file",
186: "argument count wrong, violates syntax",
187: "child violates parent syntax",
188: "argument count wrong, violates syntax",
189: "NOT IMPLEMENTED: .so with absolute path or \"..\"",
190: "no document body",
191: "no document prologue",
192: "static buffer exhausted",
193: };
194:
195: static const char * const mandoclevels[MANDOCLEVEL_MAX] = {
196: "SUCCESS",
197: "RESERVED",
198: "WARNING",
199: "ERROR",
200: "FATAL",
201: "BADARG",
202: "SYSERR"
203: };
204:
205: static void
206: resize_buf(struct buf *buf, size_t initial)
207: {
208:
209: buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
210: buf->buf = mandoc_realloc(buf->buf, buf->sz);
211: }
212:
213: static void
214: pset(const char *buf, int pos, struct mparse *curp)
215: {
216: int i;
217:
218: /*
219: * Try to intuit which kind of manual parser should be used. If
220: * passed in by command-line (-man, -mdoc), then use that
221: * explicitly. If passed as -mandoc, then try to guess from the
222: * line: either skip dot-lines, use -mdoc when finding `.Dt', or
223: * default to -man, which is more lenient.
224: *
225: * Separate out pmdoc/pman from mdoc/man: the first persists
226: * through all parsers, while the latter is used per-parse.
227: */
228:
229: if ('.' == buf[0] || '\'' == buf[0]) {
230: for (i = 1; buf[i]; i++)
231: if (' ' != buf[i] && '\t' != buf[i])
232: break;
233: if ('\0' == buf[i])
234: return;
235: }
236:
237: switch (curp->inttype) {
238: case (MPARSE_MDOC):
239: if (NULL == curp->pmdoc)
1.7 ! schwarze 240: curp->pmdoc = mdoc_alloc(curp->roff, curp,
! 241: curp->defos);
1.1 schwarze 242: assert(curp->pmdoc);
243: curp->mdoc = curp->pmdoc;
244: return;
245: case (MPARSE_MAN):
246: if (NULL == curp->pman)
1.3 schwarze 247: curp->pman = man_alloc(curp->roff, curp);
1.1 schwarze 248: assert(curp->pman);
249: curp->man = curp->pman;
250: return;
251: default:
252: break;
253: }
254:
255: if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) {
256: if (NULL == curp->pmdoc)
1.7 ! schwarze 257: curp->pmdoc = mdoc_alloc(curp->roff, curp,
! 258: curp->defos);
1.1 schwarze 259: assert(curp->pmdoc);
260: curp->mdoc = curp->pmdoc;
261: return;
262: }
263:
264: if (NULL == curp->pman)
1.3 schwarze 265: curp->pman = man_alloc(curp->roff, curp);
1.1 schwarze 266: assert(curp->pman);
267: curp->man = curp->pman;
268: }
269:
270: /*
271: * Main parse routine for an opened file. This is called for each
272: * opened file and simply loops around the full input file, possibly
273: * nesting (i.e., with `so').
274: */
275: static void
276: mparse_buf_r(struct mparse *curp, struct buf blk, int start)
277: {
278: const struct tbl_span *span;
279: struct buf ln;
280: enum rofferr rr;
281: int i, of, rc;
282: int pos; /* byte number in the ln buffer */
283: int lnn; /* line number in the real file */
284: unsigned char c;
285:
286: memset(&ln, 0, sizeof(struct buf));
287:
288: lnn = curp->line;
289: pos = 0;
290:
291: for (i = 0; i < (int)blk.sz; ) {
292: if (0 == pos && '\0' == blk.buf[i])
293: break;
294:
295: if (start) {
296: curp->line = lnn;
297: curp->reparse_count = 0;
298: }
299:
300: while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
301:
302: /*
303: * When finding an unescaped newline character,
304: * leave the character loop to process the line.
305: * Skip a preceding carriage return, if any.
306: */
307:
308: if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz &&
309: '\n' == blk.buf[i + 1])
310: ++i;
311: if ('\n' == blk.buf[i]) {
312: ++i;
313: ++lnn;
314: break;
315: }
316:
317: /*
318: * Warn about bogus characters. If you're using
319: * non-ASCII encoding, you're screwing your
320: * readers. Since I'd rather this not happen,
1.6 schwarze 321: * I'll be helpful and replace these characters
322: * with "?", so we don't display gibberish.
323: * Note to manual writers: use special characters.
1.1 schwarze 324: */
325:
326: c = (unsigned char) blk.buf[i];
327:
328: if ( ! (isascii(c) &&
329: (isgraph(c) || isblank(c)))) {
330: mandoc_msg(MANDOCERR_BADCHAR, curp,
1.6 schwarze 331: curp->line, pos, NULL);
1.1 schwarze 332: i++;
1.6 schwarze 333: if (pos >= (int)ln.sz)
334: resize_buf(&ln, 256);
335: ln.buf[pos++] = '?';
1.1 schwarze 336: continue;
337: }
338:
339: /* Trailing backslash = a plain char. */
340:
341: if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
342: if (pos >= (int)ln.sz)
343: resize_buf(&ln, 256);
344: ln.buf[pos++] = blk.buf[i++];
345: continue;
346: }
347:
348: /*
349: * Found escape and at least one other character.
350: * When it's a newline character, skip it.
351: * When there is a carriage return in between,
352: * skip that one as well.
353: */
354:
355: if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz &&
356: '\n' == blk.buf[i + 2])
357: ++i;
358: if ('\n' == blk.buf[i + 1]) {
359: i += 2;
360: ++lnn;
361: continue;
362: }
363:
364: if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
365: i += 2;
366: /* Comment, skip to end of line */
367: for (; i < (int)blk.sz; ++i) {
368: if ('\n' == blk.buf[i]) {
369: ++i;
370: ++lnn;
371: break;
372: }
373: }
374:
375: /* Backout trailing whitespaces */
376: for (; pos > 0; --pos) {
377: if (ln.buf[pos - 1] != ' ')
378: break;
379: if (pos > 2 && ln.buf[pos - 2] == '\\')
380: break;
381: }
382: break;
383: }
384:
385: /* Some other escape sequence, copy & cont. */
386:
387: if (pos + 1 >= (int)ln.sz)
388: resize_buf(&ln, 256);
389:
390: ln.buf[pos++] = blk.buf[i++];
391: ln.buf[pos++] = blk.buf[i++];
392: }
393:
394: if (pos >= (int)ln.sz)
395: resize_buf(&ln, 256);
396:
397: ln.buf[pos] = '\0';
398:
399: /*
400: * A significant amount of complexity is contained by
401: * the roff preprocessor. It's line-oriented but can be
402: * expressed on one line, so we need at times to
403: * readjust our starting point and re-run it. The roff
404: * preprocessor can also readjust the buffers with new
405: * data, so we pass them in wholesale.
406: */
407:
408: of = 0;
409:
1.4 schwarze 410: /*
411: * Maintain a lookaside buffer of all parsed lines. We
412: * only do this if mparse_keep() has been invoked (the
413: * buffer may be accessed with mparse_getkeep()).
414: */
415:
416: if (curp->secondary) {
417: curp->secondary->buf =
418: mandoc_realloc
419: (curp->secondary->buf,
420: curp->secondary->sz + pos + 2);
421: memcpy(curp->secondary->buf +
422: curp->secondary->sz,
423: ln.buf, pos);
424: curp->secondary->sz += pos;
425: curp->secondary->buf
426: [curp->secondary->sz] = '\n';
427: curp->secondary->sz++;
428: curp->secondary->buf
429: [curp->secondary->sz] = '\0';
430: }
1.1 schwarze 431: rerun:
432: rr = roff_parseln
433: (curp->roff, curp->line,
434: &ln.buf, &ln.sz, of, &of);
435:
436: switch (rr) {
437: case (ROFF_REPARSE):
438: if (REPARSE_LIMIT >= ++curp->reparse_count)
439: mparse_buf_r(curp, ln, 0);
440: else
441: mandoc_msg(MANDOCERR_ROFFLOOP, curp,
442: curp->line, pos, NULL);
443: pos = 0;
444: continue;
445: case (ROFF_APPEND):
446: pos = (int)strlen(ln.buf);
447: continue;
448: case (ROFF_RERUN):
449: goto rerun;
450: case (ROFF_IGN):
451: pos = 0;
452: continue;
453: case (ROFF_ERR):
454: assert(MANDOCLEVEL_FATAL <= curp->file_status);
455: break;
456: case (ROFF_SO):
1.4 schwarze 457: /*
458: * We remove `so' clauses from our lookaside
459: * buffer because we're going to descend into
460: * the file recursively.
461: */
462: if (curp->secondary)
463: curp->secondary->sz -= pos + 1;
1.1 schwarze 464: mparse_readfd_r(curp, -1, ln.buf + of, 1);
465: if (MANDOCLEVEL_FATAL <= curp->file_status)
466: break;
467: pos = 0;
468: continue;
469: default:
470: break;
471: }
472:
473: /*
474: * If we encounter errors in the recursive parse, make
475: * sure we don't continue parsing.
476: */
477:
478: if (MANDOCLEVEL_FATAL <= curp->file_status)
479: break;
480:
481: /*
482: * If input parsers have not been allocated, do so now.
1.2 schwarze 483: * We keep these instanced between parsers, but set them
1.1 schwarze 484: * locally per parse routine since we can use different
485: * parsers with each one.
486: */
487:
488: if ( ! (curp->man || curp->mdoc))
489: pset(ln.buf + of, pos - of, curp);
490:
491: /*
492: * Lastly, push down into the parsers themselves. One
493: * of these will have already been set in the pset()
494: * routine.
495: * If libroff returns ROFF_TBL, then add it to the
496: * currently open parse. Since we only get here if
497: * there does exist data (see tbl_data.c), we're
498: * guaranteed that something's been allocated.
499: * Do the same for ROFF_EQN.
500: */
501:
502: rc = -1;
503:
504: if (ROFF_TBL == rr)
505: while (NULL != (span = roff_span(curp->roff))) {
506: rc = curp->man ?
507: man_addspan(curp->man, span) :
508: mdoc_addspan(curp->mdoc, span);
509: if (0 == rc)
510: break;
511: }
512: else if (ROFF_EQN == rr)
513: rc = curp->mdoc ?
514: mdoc_addeqn(curp->mdoc,
515: roff_eqn(curp->roff)) :
516: man_addeqn(curp->man,
517: roff_eqn(curp->roff));
518: else if (curp->man || curp->mdoc)
519: rc = curp->man ?
520: man_parseln(curp->man,
521: curp->line, ln.buf, of) :
522: mdoc_parseln(curp->mdoc,
523: curp->line, ln.buf, of);
524:
525: if (0 == rc) {
526: assert(MANDOCLEVEL_FATAL <= curp->file_status);
527: break;
528: }
529:
530: /* Temporary buffers typically are not full. */
531:
532: if (0 == start && '\0' == blk.buf[i])
533: break;
534:
535: /* Start the next input line. */
536:
537: pos = 0;
538: }
539:
540: free(ln.buf);
541: }
542:
543: static void
544: pdesc(struct mparse *curp, const char *file, int fd)
545: {
546: struct buf blk;
547: int with_mmap;
548:
549: /*
550: * Run for each opened file; may be called more than once for
551: * each full parse sequence if the opened file is nested (i.e.,
552: * from `so'). Simply sucks in the whole file and moves into
553: * the parse phase for the file.
554: */
555:
556: if ( ! read_whole_file(file, fd, &blk, &with_mmap)) {
557: curp->file_status = MANDOCLEVEL_SYSERR;
558: return;
559: }
560:
561: /* Line number is per-file. */
562:
563: curp->line = 1;
564:
565: mparse_buf_r(curp, blk, 1);
566:
567: if (with_mmap)
568: munmap(blk.buf, blk.sz);
569: else
570: free(blk.buf);
571: }
572:
573: static int
574: read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
575: {
576: struct stat st;
577: size_t off;
578: ssize_t ssz;
579:
580: if (-1 == fstat(fd, &st)) {
581: perror(file);
582: return(0);
583: }
584:
585: /*
586: * If we're a regular file, try just reading in the whole entry
587: * via mmap(). This is faster than reading it into blocks, and
588: * since each file is only a few bytes to begin with, I'm not
589: * concerned that this is going to tank any machines.
590: */
591:
592: if (S_ISREG(st.st_mode)) {
593: if (st.st_size >= (1U << 31)) {
594: fprintf(stderr, "%s: input too large\n", file);
595: return(0);
596: }
597: *with_mmap = 1;
598: fb->sz = (size_t)st.st_size;
599: fb->buf = mmap(NULL, fb->sz, PROT_READ,
600: MAP_FILE|MAP_SHARED, fd, 0);
601: if (fb->buf != MAP_FAILED)
602: return(1);
603: }
604:
605: /*
606: * If this isn't a regular file (like, say, stdin), then we must
607: * go the old way and just read things in bit by bit.
608: */
609:
610: *with_mmap = 0;
611: off = 0;
612: fb->sz = 0;
613: fb->buf = NULL;
614: for (;;) {
615: if (off == fb->sz) {
616: if (fb->sz == (1U << 31)) {
617: fprintf(stderr, "%s: input too large\n", file);
618: break;
619: }
620: resize_buf(fb, 65536);
621: }
622: ssz = read(fd, fb->buf + (int)off, fb->sz - off);
623: if (ssz == 0) {
624: fb->sz = off;
625: return(1);
626: }
627: if (ssz == -1) {
628: perror(file);
629: break;
630: }
631: off += (size_t)ssz;
632: }
633:
634: free(fb->buf);
635: fb->buf = NULL;
636: return(0);
637: }
638:
639: static void
640: mparse_end(struct mparse *curp)
641: {
642:
643: if (MANDOCLEVEL_FATAL <= curp->file_status)
644: return;
645:
646: if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {
647: assert(MANDOCLEVEL_FATAL <= curp->file_status);
648: return;
649: }
650:
651: if (curp->man && ! man_endparse(curp->man)) {
652: assert(MANDOCLEVEL_FATAL <= curp->file_status);
653: return;
654: }
655:
656: if ( ! (curp->man || curp->mdoc)) {
657: mandoc_msg(MANDOCERR_NOTMANUAL, curp, 1, 0, NULL);
658: curp->file_status = MANDOCLEVEL_FATAL;
659: return;
660: }
661:
662: roff_endparse(curp->roff);
663: }
664:
665: static void
666: mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
667: {
668: const char *svfile;
669:
670: if (-1 == fd)
671: if (-1 == (fd = open(file, O_RDONLY, 0))) {
672: perror(file);
673: curp->file_status = MANDOCLEVEL_SYSERR;
674: return;
675: }
676:
677: svfile = curp->file;
678: curp->file = file;
679:
680: pdesc(curp, file, fd);
681:
682: if (0 == re && MANDOCLEVEL_FATAL > curp->file_status)
683: mparse_end(curp);
684:
685: if (STDIN_FILENO != fd && -1 == close(fd))
686: perror(file);
687:
688: curp->file = svfile;
689: }
690:
691: enum mandoclevel
692: mparse_readfd(struct mparse *curp, int fd, const char *file)
693: {
694:
695: mparse_readfd_r(curp, fd, file, 0);
696: return(curp->file_status);
697: }
698:
699: struct mparse *
1.7 ! schwarze 700: mparse_alloc(enum mparset inttype, enum mandoclevel wlevel,
! 701: mandocmsg mmsg, void *arg, char *defos)
1.1 schwarze 702: {
703: struct mparse *curp;
704:
705: assert(wlevel <= MANDOCLEVEL_FATAL);
706:
707: curp = mandoc_calloc(1, sizeof(struct mparse));
708:
709: curp->wlevel = wlevel;
710: curp->mmsg = mmsg;
711: curp->arg = arg;
712: curp->inttype = inttype;
1.7 ! schwarze 713: curp->defos = defos;
1.1 schwarze 714:
1.3 schwarze 715: curp->roff = roff_alloc(curp);
1.1 schwarze 716: return(curp);
717: }
718:
719: void
720: mparse_reset(struct mparse *curp)
721: {
722:
723: roff_reset(curp->roff);
724:
725: if (curp->mdoc)
726: mdoc_reset(curp->mdoc);
727: if (curp->man)
728: man_reset(curp->man);
1.4 schwarze 729: if (curp->secondary)
730: curp->secondary->sz = 0;
1.1 schwarze 731:
732: curp->file_status = MANDOCLEVEL_OK;
733: curp->mdoc = NULL;
734: curp->man = NULL;
735: }
736:
737: void
738: mparse_free(struct mparse *curp)
739: {
740:
741: if (curp->pmdoc)
742: mdoc_free(curp->pmdoc);
743: if (curp->pman)
744: man_free(curp->pman);
745: if (curp->roff)
746: roff_free(curp->roff);
1.4 schwarze 747: if (curp->secondary)
748: free(curp->secondary->buf);
1.1 schwarze 749:
1.4 schwarze 750: free(curp->secondary);
1.1 schwarze 751: free(curp);
752: }
753:
754: void
755: mparse_result(struct mparse *curp, struct mdoc **mdoc, struct man **man)
756: {
757:
758: if (mdoc)
759: *mdoc = curp->mdoc;
760: if (man)
761: *man = curp->man;
762: }
763:
764: void
765: mandoc_vmsg(enum mandocerr t, struct mparse *m,
766: int ln, int pos, const char *fmt, ...)
767: {
768: char buf[256];
769: va_list ap;
770:
771: va_start(ap, fmt);
772: vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
773: va_end(ap);
774:
775: mandoc_msg(t, m, ln, pos, buf);
776: }
777:
778: void
779: mandoc_msg(enum mandocerr er, struct mparse *m,
780: int ln, int col, const char *msg)
781: {
782: enum mandoclevel level;
783:
784: level = MANDOCLEVEL_FATAL;
785: while (er < mandoclimits[level])
786: level--;
787:
788: if (level < m->wlevel)
789: return;
790:
791: if (m->mmsg)
792: (*m->mmsg)(er, level, m->file, ln, col, msg);
793:
794: if (m->file_status < level)
795: m->file_status = level;
796: }
797:
798: const char *
799: mparse_strerror(enum mandocerr er)
800: {
801:
802: return(mandocerrs[er]);
803: }
804:
805: const char *
806: mparse_strlevel(enum mandoclevel lvl)
807: {
808: return(mandoclevels[lvl]);
1.4 schwarze 809: }
810:
811: void
812: mparse_keep(struct mparse *p)
813: {
814:
815: assert(NULL == p->secondary);
816: p->secondary = mandoc_calloc(1, sizeof(struct buf));
817: }
818:
819: const char *
820: mparse_getkeep(const struct mparse *p)
821: {
822:
823: assert(p->secondary);
824: return(p->secondary->sz ? p->secondary->buf : NULL);
1.1 schwarze 825: }