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1.12 ! schwarze 1: /* $Id: read.c,v 1.11 2012/11/16 22:20:40 schwarze Exp $ */
1.1 schwarze 2: /*
3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.12 ! schwarze 4: * Copyright (c) 2010, 2011, 2012 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 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",
1.11 schwarze 87: "unknown manual volume or arch",
1.1 schwarze 88: "date missing, using today's date",
89: "cannot parse date, using it verbatim",
90: "prologue macros out of order",
91: "duplicate prologue macro",
92: "macro not allowed in prologue",
93: "macro not allowed in body",
94:
95: /* related to document structure */
96: ".so is fragile, better use ln(1)",
97: "NAME section must come first",
98: "bad NAME section contents",
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",
1.10 schwarze 106: "moving paragraph macro out of list",
1.1 schwarze 107: "skipping no-space macro",
108: "blocks badly nested",
109: "child violates parent syntax",
110: "nested displays are not portable",
111: "already in literal mode",
112: "line scope broken",
113:
114: /* related to missing macro arguments */
115: "skipping empty macro",
116: "argument count wrong",
117: "missing display type",
118: "list type must come first",
119: "tag lists require a width argument",
120: "missing font type",
121: "skipping end of block that is not open",
122:
123: /* related to bad macro arguments */
124: "skipping argument",
125: "duplicate argument",
126: "duplicate display type",
127: "duplicate list type",
128: "unknown AT&T UNIX version",
129: "bad Boolean value",
130: "unknown font",
131: "unknown standard specifier",
132: "bad width argument",
133:
134: /* related to plain text */
135: "blank line in non-literal context",
136: "tab in non-literal context",
137: "end of line whitespace",
138: "bad comment style",
1.2 schwarze 139: "bad escape sequence",
1.1 schwarze 140: "unterminated quoted string",
1.3 schwarze 141:
142: /* related to equations */
143: "unexpected literal in equation",
1.1 schwarze 144:
145: "generic error",
146:
1.3 schwarze 147: /* related to equations */
148: "unexpected equation scope closure",
149: "equation scope open on exit",
150: "overlapping equation scopes",
151: "unexpected end of equation",
152: "equation syntax error",
153:
1.1 schwarze 154: /* related to tables */
155: "bad table syntax",
156: "bad table option",
157: "bad table layout",
158: "no table layout cells specified",
159: "no table data cells specified",
160: "ignore data in cell",
161: "data block still open",
162: "ignoring extra data cells",
163:
164: "input stack limit exceeded, infinite loop?",
165: "skipping bad character",
166: "escaped character not allowed in a name",
1.9 schwarze 167: "manual name not yet set",
1.1 schwarze 168: "skipping text before the first section header",
169: "skipping unknown macro",
170: "NOT IMPLEMENTED, please use groff: skipping request",
171: "argument count wrong",
1.12 ! schwarze 172: "skipping column outside column list",
1.1 schwarze 173: "skipping end of block that is not open",
174: "missing end of block",
175: "scope open on exit",
176: "uname(3) system call failed",
177: "macro requires line argument(s)",
178: "macro requires body argument(s)",
179: "macro requires argument(s)",
180: "missing list type",
181: "line argument(s) will be lost",
182: "body argument(s) will be lost",
183:
184: "generic fatal error",
185:
186: "not a manual",
187: "column syntax is inconsistent",
188: "NOT IMPLEMENTED: .Bd -file",
189: "argument count wrong, violates syntax",
190: "child violates parent syntax",
191: "argument count wrong, violates syntax",
192: "NOT IMPLEMENTED: .so with absolute path or \"..\"",
193: "no document body",
194: "no document prologue",
195: "static buffer exhausted",
196: };
197:
198: static const char * const mandoclevels[MANDOCLEVEL_MAX] = {
199: "SUCCESS",
200: "RESERVED",
201: "WARNING",
202: "ERROR",
203: "FATAL",
204: "BADARG",
205: "SYSERR"
206: };
207:
208: static void
209: resize_buf(struct buf *buf, size_t initial)
210: {
211:
212: buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
213: buf->buf = mandoc_realloc(buf->buf, buf->sz);
214: }
215:
216: static void
217: pset(const char *buf, int pos, struct mparse *curp)
218: {
219: int i;
220:
221: /*
222: * Try to intuit which kind of manual parser should be used. If
223: * passed in by command-line (-man, -mdoc), then use that
224: * explicitly. If passed as -mandoc, then try to guess from the
225: * line: either skip dot-lines, use -mdoc when finding `.Dt', or
226: * default to -man, which is more lenient.
227: *
228: * Separate out pmdoc/pman from mdoc/man: the first persists
229: * through all parsers, while the latter is used per-parse.
230: */
231:
232: if ('.' == buf[0] || '\'' == buf[0]) {
233: for (i = 1; buf[i]; i++)
234: if (' ' != buf[i] && '\t' != buf[i])
235: break;
236: if ('\0' == buf[i])
237: return;
238: }
239:
240: switch (curp->inttype) {
241: case (MPARSE_MDOC):
242: if (NULL == curp->pmdoc)
1.7 schwarze 243: curp->pmdoc = mdoc_alloc(curp->roff, curp,
244: curp->defos);
1.1 schwarze 245: assert(curp->pmdoc);
246: curp->mdoc = curp->pmdoc;
247: return;
248: case (MPARSE_MAN):
249: if (NULL == curp->pman)
1.3 schwarze 250: curp->pman = man_alloc(curp->roff, curp);
1.1 schwarze 251: assert(curp->pman);
252: curp->man = curp->pman;
253: return;
254: default:
255: break;
256: }
257:
258: if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) {
259: if (NULL == curp->pmdoc)
1.7 schwarze 260: curp->pmdoc = mdoc_alloc(curp->roff, curp,
261: curp->defos);
1.1 schwarze 262: assert(curp->pmdoc);
263: curp->mdoc = curp->pmdoc;
264: return;
265: }
266:
267: if (NULL == curp->pman)
1.3 schwarze 268: curp->pman = man_alloc(curp->roff, curp);
1.1 schwarze 269: assert(curp->pman);
270: curp->man = curp->pman;
271: }
272:
273: /*
274: * Main parse routine for an opened file. This is called for each
275: * opened file and simply loops around the full input file, possibly
276: * nesting (i.e., with `so').
277: */
278: static void
279: mparse_buf_r(struct mparse *curp, struct buf blk, int start)
280: {
281: const struct tbl_span *span;
282: struct buf ln;
283: enum rofferr rr;
284: int i, of, rc;
285: int pos; /* byte number in the ln buffer */
286: int lnn; /* line number in the real file */
287: unsigned char c;
288:
289: memset(&ln, 0, sizeof(struct buf));
290:
291: lnn = curp->line;
292: pos = 0;
293:
294: for (i = 0; i < (int)blk.sz; ) {
295: if (0 == pos && '\0' == blk.buf[i])
296: break;
297:
298: if (start) {
299: curp->line = lnn;
300: curp->reparse_count = 0;
301: }
302:
303: while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
304:
305: /*
306: * When finding an unescaped newline character,
307: * leave the character loop to process the line.
308: * Skip a preceding carriage return, if any.
309: */
310:
311: if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz &&
312: '\n' == blk.buf[i + 1])
313: ++i;
314: if ('\n' == blk.buf[i]) {
315: ++i;
316: ++lnn;
317: break;
318: }
319:
320: /*
321: * Warn about bogus characters. If you're using
322: * non-ASCII encoding, you're screwing your
323: * readers. Since I'd rather this not happen,
1.6 schwarze 324: * I'll be helpful and replace these characters
325: * with "?", so we don't display gibberish.
326: * Note to manual writers: use special characters.
1.1 schwarze 327: */
328:
329: c = (unsigned char) blk.buf[i];
330:
331: if ( ! (isascii(c) &&
332: (isgraph(c) || isblank(c)))) {
333: mandoc_msg(MANDOCERR_BADCHAR, curp,
1.6 schwarze 334: curp->line, pos, NULL);
1.1 schwarze 335: i++;
1.6 schwarze 336: if (pos >= (int)ln.sz)
337: resize_buf(&ln, 256);
338: ln.buf[pos++] = '?';
1.1 schwarze 339: continue;
340: }
341:
342: /* Trailing backslash = a plain char. */
343:
344: if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
345: if (pos >= (int)ln.sz)
346: resize_buf(&ln, 256);
347: ln.buf[pos++] = blk.buf[i++];
348: continue;
349: }
350:
351: /*
352: * Found escape and at least one other character.
353: * When it's a newline character, skip it.
354: * When there is a carriage return in between,
355: * skip that one as well.
356: */
357:
358: if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz &&
359: '\n' == blk.buf[i + 2])
360: ++i;
361: if ('\n' == blk.buf[i + 1]) {
362: i += 2;
363: ++lnn;
364: continue;
365: }
366:
367: if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
368: i += 2;
369: /* Comment, skip to end of line */
370: for (; i < (int)blk.sz; ++i) {
371: if ('\n' == blk.buf[i]) {
372: ++i;
373: ++lnn;
374: break;
375: }
376: }
377:
378: /* Backout trailing whitespaces */
379: for (; pos > 0; --pos) {
380: if (ln.buf[pos - 1] != ' ')
381: break;
382: if (pos > 2 && ln.buf[pos - 2] == '\\')
383: break;
384: }
385: break;
386: }
387:
388: /* Some other escape sequence, copy & cont. */
389:
390: if (pos + 1 >= (int)ln.sz)
391: resize_buf(&ln, 256);
392:
393: ln.buf[pos++] = blk.buf[i++];
394: ln.buf[pos++] = blk.buf[i++];
395: }
396:
397: if (pos >= (int)ln.sz)
398: resize_buf(&ln, 256);
399:
400: ln.buf[pos] = '\0';
401:
402: /*
403: * A significant amount of complexity is contained by
404: * the roff preprocessor. It's line-oriented but can be
405: * expressed on one line, so we need at times to
406: * readjust our starting point and re-run it. The roff
407: * preprocessor can also readjust the buffers with new
408: * data, so we pass them in wholesale.
409: */
410:
411: of = 0;
412:
1.4 schwarze 413: /*
414: * Maintain a lookaside buffer of all parsed lines. We
415: * only do this if mparse_keep() has been invoked (the
416: * buffer may be accessed with mparse_getkeep()).
417: */
418:
419: if (curp->secondary) {
420: curp->secondary->buf =
421: mandoc_realloc
422: (curp->secondary->buf,
423: curp->secondary->sz + pos + 2);
424: memcpy(curp->secondary->buf +
425: curp->secondary->sz,
426: ln.buf, pos);
427: curp->secondary->sz += pos;
428: curp->secondary->buf
429: [curp->secondary->sz] = '\n';
430: curp->secondary->sz++;
431: curp->secondary->buf
432: [curp->secondary->sz] = '\0';
433: }
1.1 schwarze 434: rerun:
435: rr = roff_parseln
436: (curp->roff, curp->line,
437: &ln.buf, &ln.sz, of, &of);
438:
439: switch (rr) {
440: case (ROFF_REPARSE):
441: if (REPARSE_LIMIT >= ++curp->reparse_count)
442: mparse_buf_r(curp, ln, 0);
443: else
444: mandoc_msg(MANDOCERR_ROFFLOOP, curp,
445: curp->line, pos, NULL);
446: pos = 0;
447: continue;
448: case (ROFF_APPEND):
449: pos = (int)strlen(ln.buf);
450: continue;
451: case (ROFF_RERUN):
452: goto rerun;
453: case (ROFF_IGN):
454: pos = 0;
455: continue;
456: case (ROFF_ERR):
457: assert(MANDOCLEVEL_FATAL <= curp->file_status);
458: break;
459: case (ROFF_SO):
1.4 schwarze 460: /*
461: * We remove `so' clauses from our lookaside
462: * buffer because we're going to descend into
463: * the file recursively.
464: */
465: if (curp->secondary)
466: curp->secondary->sz -= pos + 1;
1.1 schwarze 467: mparse_readfd_r(curp, -1, ln.buf + of, 1);
468: if (MANDOCLEVEL_FATAL <= curp->file_status)
469: break;
470: pos = 0;
471: continue;
472: default:
473: break;
474: }
475:
476: /*
477: * If we encounter errors in the recursive parse, make
478: * sure we don't continue parsing.
479: */
480:
481: if (MANDOCLEVEL_FATAL <= curp->file_status)
482: break;
483:
484: /*
485: * If input parsers have not been allocated, do so now.
1.2 schwarze 486: * We keep these instanced between parsers, but set them
1.1 schwarze 487: * locally per parse routine since we can use different
488: * parsers with each one.
489: */
490:
491: if ( ! (curp->man || curp->mdoc))
492: pset(ln.buf + of, pos - of, curp);
493:
494: /*
495: * Lastly, push down into the parsers themselves. One
496: * of these will have already been set in the pset()
497: * routine.
498: * If libroff returns ROFF_TBL, then add it to the
499: * currently open parse. Since we only get here if
500: * there does exist data (see tbl_data.c), we're
501: * guaranteed that something's been allocated.
502: * Do the same for ROFF_EQN.
503: */
504:
505: rc = -1;
506:
507: if (ROFF_TBL == rr)
508: while (NULL != (span = roff_span(curp->roff))) {
509: rc = curp->man ?
510: man_addspan(curp->man, span) :
511: mdoc_addspan(curp->mdoc, span);
512: if (0 == rc)
513: break;
514: }
515: else if (ROFF_EQN == rr)
516: rc = curp->mdoc ?
517: mdoc_addeqn(curp->mdoc,
518: roff_eqn(curp->roff)) :
519: man_addeqn(curp->man,
520: roff_eqn(curp->roff));
521: else if (curp->man || curp->mdoc)
522: rc = curp->man ?
523: man_parseln(curp->man,
524: curp->line, ln.buf, of) :
525: mdoc_parseln(curp->mdoc,
526: curp->line, ln.buf, of);
527:
528: if (0 == rc) {
529: assert(MANDOCLEVEL_FATAL <= curp->file_status);
530: break;
531: }
532:
533: /* Temporary buffers typically are not full. */
534:
535: if (0 == start && '\0' == blk.buf[i])
536: break;
537:
538: /* Start the next input line. */
539:
540: pos = 0;
541: }
542:
543: free(ln.buf);
544: }
545:
546: static void
547: pdesc(struct mparse *curp, const char *file, int fd)
548: {
549: struct buf blk;
550: int with_mmap;
551:
552: /*
553: * Run for each opened file; may be called more than once for
554: * each full parse sequence if the opened file is nested (i.e.,
555: * from `so'). Simply sucks in the whole file and moves into
556: * the parse phase for the file.
557: */
558:
559: if ( ! read_whole_file(file, fd, &blk, &with_mmap)) {
560: curp->file_status = MANDOCLEVEL_SYSERR;
561: return;
562: }
563:
564: /* Line number is per-file. */
565:
566: curp->line = 1;
567:
568: mparse_buf_r(curp, blk, 1);
569:
570: if (with_mmap)
571: munmap(blk.buf, blk.sz);
572: else
573: free(blk.buf);
574: }
575:
576: static int
577: read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
578: {
579: struct stat st;
580: size_t off;
581: ssize_t ssz;
582:
583: if (-1 == fstat(fd, &st)) {
584: perror(file);
585: return(0);
586: }
587:
588: /*
589: * If we're a regular file, try just reading in the whole entry
590: * via mmap(). This is faster than reading it into blocks, and
591: * since each file is only a few bytes to begin with, I'm not
592: * concerned that this is going to tank any machines.
593: */
594:
595: if (S_ISREG(st.st_mode)) {
596: if (st.st_size >= (1U << 31)) {
597: fprintf(stderr, "%s: input too large\n", file);
598: return(0);
599: }
600: *with_mmap = 1;
601: fb->sz = (size_t)st.st_size;
602: fb->buf = mmap(NULL, fb->sz, PROT_READ,
603: MAP_FILE|MAP_SHARED, fd, 0);
604: if (fb->buf != MAP_FAILED)
605: return(1);
606: }
607:
608: /*
609: * If this isn't a regular file (like, say, stdin), then we must
610: * go the old way and just read things in bit by bit.
611: */
612:
613: *with_mmap = 0;
614: off = 0;
615: fb->sz = 0;
616: fb->buf = NULL;
617: for (;;) {
618: if (off == fb->sz) {
619: if (fb->sz == (1U << 31)) {
620: fprintf(stderr, "%s: input too large\n", file);
621: break;
622: }
623: resize_buf(fb, 65536);
624: }
625: ssz = read(fd, fb->buf + (int)off, fb->sz - off);
626: if (ssz == 0) {
627: fb->sz = off;
628: return(1);
629: }
630: if (ssz == -1) {
631: perror(file);
632: break;
633: }
634: off += (size_t)ssz;
635: }
636:
637: free(fb->buf);
638: fb->buf = NULL;
639: return(0);
640: }
641:
642: static void
643: mparse_end(struct mparse *curp)
644: {
645:
646: if (MANDOCLEVEL_FATAL <= curp->file_status)
647: return;
648:
649: if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {
650: assert(MANDOCLEVEL_FATAL <= curp->file_status);
651: return;
652: }
653:
654: if (curp->man && ! man_endparse(curp->man)) {
655: assert(MANDOCLEVEL_FATAL <= curp->file_status);
656: return;
657: }
658:
659: if ( ! (curp->man || curp->mdoc)) {
660: mandoc_msg(MANDOCERR_NOTMANUAL, curp, 1, 0, NULL);
661: curp->file_status = MANDOCLEVEL_FATAL;
662: return;
663: }
664:
665: roff_endparse(curp->roff);
666: }
667:
668: static void
669: mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
670: {
671: const char *svfile;
672:
673: if (-1 == fd)
674: if (-1 == (fd = open(file, O_RDONLY, 0))) {
675: perror(file);
676: curp->file_status = MANDOCLEVEL_SYSERR;
677: return;
678: }
679:
680: svfile = curp->file;
681: curp->file = file;
682:
683: pdesc(curp, file, fd);
684:
685: if (0 == re && MANDOCLEVEL_FATAL > curp->file_status)
686: mparse_end(curp);
687:
688: if (STDIN_FILENO != fd && -1 == close(fd))
689: perror(file);
690:
691: curp->file = svfile;
692: }
693:
694: enum mandoclevel
695: mparse_readfd(struct mparse *curp, int fd, const char *file)
696: {
697:
698: mparse_readfd_r(curp, fd, file, 0);
699: return(curp->file_status);
700: }
701:
702: struct mparse *
1.7 schwarze 703: mparse_alloc(enum mparset inttype, enum mandoclevel wlevel,
704: mandocmsg mmsg, void *arg, char *defos)
1.1 schwarze 705: {
706: struct mparse *curp;
707:
708: assert(wlevel <= MANDOCLEVEL_FATAL);
709:
710: curp = mandoc_calloc(1, sizeof(struct mparse));
711:
712: curp->wlevel = wlevel;
713: curp->mmsg = mmsg;
714: curp->arg = arg;
715: curp->inttype = inttype;
1.7 schwarze 716: curp->defos = defos;
1.1 schwarze 717:
1.8 schwarze 718: curp->roff = roff_alloc(inttype, curp);
1.1 schwarze 719: return(curp);
720: }
721:
722: void
723: mparse_reset(struct mparse *curp)
724: {
725:
726: roff_reset(curp->roff);
727:
728: if (curp->mdoc)
729: mdoc_reset(curp->mdoc);
730: if (curp->man)
731: man_reset(curp->man);
1.4 schwarze 732: if (curp->secondary)
733: curp->secondary->sz = 0;
1.1 schwarze 734:
735: curp->file_status = MANDOCLEVEL_OK;
736: curp->mdoc = NULL;
737: curp->man = NULL;
738: }
739:
740: void
741: mparse_free(struct mparse *curp)
742: {
743:
744: if (curp->pmdoc)
745: mdoc_free(curp->pmdoc);
746: if (curp->pman)
747: man_free(curp->pman);
748: if (curp->roff)
749: roff_free(curp->roff);
1.4 schwarze 750: if (curp->secondary)
751: free(curp->secondary->buf);
1.1 schwarze 752:
1.4 schwarze 753: free(curp->secondary);
1.1 schwarze 754: free(curp);
755: }
756:
757: void
758: mparse_result(struct mparse *curp, struct mdoc **mdoc, struct man **man)
759: {
760:
761: if (mdoc)
762: *mdoc = curp->mdoc;
763: if (man)
764: *man = curp->man;
765: }
766:
767: void
768: mandoc_vmsg(enum mandocerr t, struct mparse *m,
769: int ln, int pos, const char *fmt, ...)
770: {
771: char buf[256];
772: va_list ap;
773:
774: va_start(ap, fmt);
775: vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
776: va_end(ap);
777:
778: mandoc_msg(t, m, ln, pos, buf);
779: }
780:
781: void
782: mandoc_msg(enum mandocerr er, struct mparse *m,
783: int ln, int col, const char *msg)
784: {
785: enum mandoclevel level;
786:
787: level = MANDOCLEVEL_FATAL;
788: while (er < mandoclimits[level])
789: level--;
790:
791: if (level < m->wlevel)
792: return;
793:
794: if (m->mmsg)
795: (*m->mmsg)(er, level, m->file, ln, col, msg);
796:
797: if (m->file_status < level)
798: m->file_status = level;
799: }
800:
801: const char *
802: mparse_strerror(enum mandocerr er)
803: {
804:
805: return(mandocerrs[er]);
806: }
807:
808: const char *
809: mparse_strlevel(enum mandoclevel lvl)
810: {
811: return(mandoclevels[lvl]);
1.4 schwarze 812: }
813:
814: void
815: mparse_keep(struct mparse *p)
816: {
817:
818: assert(NULL == p->secondary);
819: p->secondary = mandoc_calloc(1, sizeof(struct buf));
820: }
821:
822: const char *
823: mparse_getkeep(const struct mparse *p)
824: {
825:
826: assert(p->secondary);
827: return(p->secondary->sz ? p->secondary->buf : NULL);
1.1 schwarze 828: }