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1.11 ! schwarze 1: /* $Id: read.c,v 1.10 2012/07/18 11:09:30 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",
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",
172: "skipping end of block that is not open",
173: "missing end of block",
174: "scope open on exit",
175: "uname(3) system call failed",
176: "macro requires line argument(s)",
177: "macro requires body argument(s)",
178: "macro requires argument(s)",
179: "missing list type",
180: "line argument(s) will be lost",
181: "body argument(s) will be lost",
182:
183: "generic fatal error",
184:
185: "not a manual",
186: "column syntax is inconsistent",
187: "NOT IMPLEMENTED: .Bd -file",
188: "argument count wrong, violates syntax",
189: "child violates parent syntax",
190: "argument count wrong, violates syntax",
191: "NOT IMPLEMENTED: .so with absolute path or \"..\"",
192: "no document body",
193: "no document prologue",
194: "static buffer exhausted",
195: };
196:
197: static const char * const mandoclevels[MANDOCLEVEL_MAX] = {
198: "SUCCESS",
199: "RESERVED",
200: "WARNING",
201: "ERROR",
202: "FATAL",
203: "BADARG",
204: "SYSERR"
205: };
206:
207: static void
208: resize_buf(struct buf *buf, size_t initial)
209: {
210:
211: buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
212: buf->buf = mandoc_realloc(buf->buf, buf->sz);
213: }
214:
215: static void
216: pset(const char *buf, int pos, struct mparse *curp)
217: {
218: int i;
219:
220: /*
221: * Try to intuit which kind of manual parser should be used. If
222: * passed in by command-line (-man, -mdoc), then use that
223: * explicitly. If passed as -mandoc, then try to guess from the
224: * line: either skip dot-lines, use -mdoc when finding `.Dt', or
225: * default to -man, which is more lenient.
226: *
227: * Separate out pmdoc/pman from mdoc/man: the first persists
228: * through all parsers, while the latter is used per-parse.
229: */
230:
231: if ('.' == buf[0] || '\'' == buf[0]) {
232: for (i = 1; buf[i]; i++)
233: if (' ' != buf[i] && '\t' != buf[i])
234: break;
235: if ('\0' == buf[i])
236: return;
237: }
238:
239: switch (curp->inttype) {
240: case (MPARSE_MDOC):
241: if (NULL == curp->pmdoc)
1.7 schwarze 242: curp->pmdoc = mdoc_alloc(curp->roff, curp,
243: curp->defos);
1.1 schwarze 244: assert(curp->pmdoc);
245: curp->mdoc = curp->pmdoc;
246: return;
247: case (MPARSE_MAN):
248: if (NULL == curp->pman)
1.3 schwarze 249: curp->pman = man_alloc(curp->roff, curp);
1.1 schwarze 250: assert(curp->pman);
251: curp->man = curp->pman;
252: return;
253: default:
254: break;
255: }
256:
257: if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) {
258: if (NULL == curp->pmdoc)
1.7 schwarze 259: curp->pmdoc = mdoc_alloc(curp->roff, curp,
260: curp->defos);
1.1 schwarze 261: assert(curp->pmdoc);
262: curp->mdoc = curp->pmdoc;
263: return;
264: }
265:
266: if (NULL == curp->pman)
1.3 schwarze 267: curp->pman = man_alloc(curp->roff, curp);
1.1 schwarze 268: assert(curp->pman);
269: curp->man = curp->pman;
270: }
271:
272: /*
273: * Main parse routine for an opened file. This is called for each
274: * opened file and simply loops around the full input file, possibly
275: * nesting (i.e., with `so').
276: */
277: static void
278: mparse_buf_r(struct mparse *curp, struct buf blk, int start)
279: {
280: const struct tbl_span *span;
281: struct buf ln;
282: enum rofferr rr;
283: int i, of, rc;
284: int pos; /* byte number in the ln buffer */
285: int lnn; /* line number in the real file */
286: unsigned char c;
287:
288: memset(&ln, 0, sizeof(struct buf));
289:
290: lnn = curp->line;
291: pos = 0;
292:
293: for (i = 0; i < (int)blk.sz; ) {
294: if (0 == pos && '\0' == blk.buf[i])
295: break;
296:
297: if (start) {
298: curp->line = lnn;
299: curp->reparse_count = 0;
300: }
301:
302: while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
303:
304: /*
305: * When finding an unescaped newline character,
306: * leave the character loop to process the line.
307: * Skip a preceding carriage return, if any.
308: */
309:
310: if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz &&
311: '\n' == blk.buf[i + 1])
312: ++i;
313: if ('\n' == blk.buf[i]) {
314: ++i;
315: ++lnn;
316: break;
317: }
318:
319: /*
320: * Warn about bogus characters. If you're using
321: * non-ASCII encoding, you're screwing your
322: * readers. Since I'd rather this not happen,
1.6 schwarze 323: * I'll be helpful and replace these characters
324: * with "?", so we don't display gibberish.
325: * Note to manual writers: use special characters.
1.1 schwarze 326: */
327:
328: c = (unsigned char) blk.buf[i];
329:
330: if ( ! (isascii(c) &&
331: (isgraph(c) || isblank(c)))) {
332: mandoc_msg(MANDOCERR_BADCHAR, curp,
1.6 schwarze 333: curp->line, pos, NULL);
1.1 schwarze 334: i++;
1.6 schwarze 335: if (pos >= (int)ln.sz)
336: resize_buf(&ln, 256);
337: ln.buf[pos++] = '?';
1.1 schwarze 338: continue;
339: }
340:
341: /* Trailing backslash = a plain char. */
342:
343: if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
344: if (pos >= (int)ln.sz)
345: resize_buf(&ln, 256);
346: ln.buf[pos++] = blk.buf[i++];
347: continue;
348: }
349:
350: /*
351: * Found escape and at least one other character.
352: * When it's a newline character, skip it.
353: * When there is a carriage return in between,
354: * skip that one as well.
355: */
356:
357: if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz &&
358: '\n' == blk.buf[i + 2])
359: ++i;
360: if ('\n' == blk.buf[i + 1]) {
361: i += 2;
362: ++lnn;
363: continue;
364: }
365:
366: if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
367: i += 2;
368: /* Comment, skip to end of line */
369: for (; i < (int)blk.sz; ++i) {
370: if ('\n' == blk.buf[i]) {
371: ++i;
372: ++lnn;
373: break;
374: }
375: }
376:
377: /* Backout trailing whitespaces */
378: for (; pos > 0; --pos) {
379: if (ln.buf[pos - 1] != ' ')
380: break;
381: if (pos > 2 && ln.buf[pos - 2] == '\\')
382: break;
383: }
384: break;
385: }
386:
387: /* Some other escape sequence, copy & cont. */
388:
389: if (pos + 1 >= (int)ln.sz)
390: resize_buf(&ln, 256);
391:
392: ln.buf[pos++] = blk.buf[i++];
393: ln.buf[pos++] = blk.buf[i++];
394: }
395:
396: if (pos >= (int)ln.sz)
397: resize_buf(&ln, 256);
398:
399: ln.buf[pos] = '\0';
400:
401: /*
402: * A significant amount of complexity is contained by
403: * the roff preprocessor. It's line-oriented but can be
404: * expressed on one line, so we need at times to
405: * readjust our starting point and re-run it. The roff
406: * preprocessor can also readjust the buffers with new
407: * data, so we pass them in wholesale.
408: */
409:
410: of = 0;
411:
1.4 schwarze 412: /*
413: * Maintain a lookaside buffer of all parsed lines. We
414: * only do this if mparse_keep() has been invoked (the
415: * buffer may be accessed with mparse_getkeep()).
416: */
417:
418: if (curp->secondary) {
419: curp->secondary->buf =
420: mandoc_realloc
421: (curp->secondary->buf,
422: curp->secondary->sz + pos + 2);
423: memcpy(curp->secondary->buf +
424: curp->secondary->sz,
425: ln.buf, pos);
426: curp->secondary->sz += pos;
427: curp->secondary->buf
428: [curp->secondary->sz] = '\n';
429: curp->secondary->sz++;
430: curp->secondary->buf
431: [curp->secondary->sz] = '\0';
432: }
1.1 schwarze 433: rerun:
434: rr = roff_parseln
435: (curp->roff, curp->line,
436: &ln.buf, &ln.sz, of, &of);
437:
438: switch (rr) {
439: case (ROFF_REPARSE):
440: if (REPARSE_LIMIT >= ++curp->reparse_count)
441: mparse_buf_r(curp, ln, 0);
442: else
443: mandoc_msg(MANDOCERR_ROFFLOOP, curp,
444: curp->line, pos, NULL);
445: pos = 0;
446: continue;
447: case (ROFF_APPEND):
448: pos = (int)strlen(ln.buf);
449: continue;
450: case (ROFF_RERUN):
451: goto rerun;
452: case (ROFF_IGN):
453: pos = 0;
454: continue;
455: case (ROFF_ERR):
456: assert(MANDOCLEVEL_FATAL <= curp->file_status);
457: break;
458: case (ROFF_SO):
1.4 schwarze 459: /*
460: * We remove `so' clauses from our lookaside
461: * buffer because we're going to descend into
462: * the file recursively.
463: */
464: if (curp->secondary)
465: curp->secondary->sz -= pos + 1;
1.1 schwarze 466: mparse_readfd_r(curp, -1, ln.buf + of, 1);
467: if (MANDOCLEVEL_FATAL <= curp->file_status)
468: break;
469: pos = 0;
470: continue;
471: default:
472: break;
473: }
474:
475: /*
476: * If we encounter errors in the recursive parse, make
477: * sure we don't continue parsing.
478: */
479:
480: if (MANDOCLEVEL_FATAL <= curp->file_status)
481: break;
482:
483: /*
484: * If input parsers have not been allocated, do so now.
1.2 schwarze 485: * We keep these instanced between parsers, but set them
1.1 schwarze 486: * locally per parse routine since we can use different
487: * parsers with each one.
488: */
489:
490: if ( ! (curp->man || curp->mdoc))
491: pset(ln.buf + of, pos - of, curp);
492:
493: /*
494: * Lastly, push down into the parsers themselves. One
495: * of these will have already been set in the pset()
496: * routine.
497: * If libroff returns ROFF_TBL, then add it to the
498: * currently open parse. Since we only get here if
499: * there does exist data (see tbl_data.c), we're
500: * guaranteed that something's been allocated.
501: * Do the same for ROFF_EQN.
502: */
503:
504: rc = -1;
505:
506: if (ROFF_TBL == rr)
507: while (NULL != (span = roff_span(curp->roff))) {
508: rc = curp->man ?
509: man_addspan(curp->man, span) :
510: mdoc_addspan(curp->mdoc, span);
511: if (0 == rc)
512: break;
513: }
514: else if (ROFF_EQN == rr)
515: rc = curp->mdoc ?
516: mdoc_addeqn(curp->mdoc,
517: roff_eqn(curp->roff)) :
518: man_addeqn(curp->man,
519: roff_eqn(curp->roff));
520: else if (curp->man || curp->mdoc)
521: rc = curp->man ?
522: man_parseln(curp->man,
523: curp->line, ln.buf, of) :
524: mdoc_parseln(curp->mdoc,
525: curp->line, ln.buf, of);
526:
527: if (0 == rc) {
528: assert(MANDOCLEVEL_FATAL <= curp->file_status);
529: break;
530: }
531:
532: /* Temporary buffers typically are not full. */
533:
534: if (0 == start && '\0' == blk.buf[i])
535: break;
536:
537: /* Start the next input line. */
538:
539: pos = 0;
540: }
541:
542: free(ln.buf);
543: }
544:
545: static void
546: pdesc(struct mparse *curp, const char *file, int fd)
547: {
548: struct buf blk;
549: int with_mmap;
550:
551: /*
552: * Run for each opened file; may be called more than once for
553: * each full parse sequence if the opened file is nested (i.e.,
554: * from `so'). Simply sucks in the whole file and moves into
555: * the parse phase for the file.
556: */
557:
558: if ( ! read_whole_file(file, fd, &blk, &with_mmap)) {
559: curp->file_status = MANDOCLEVEL_SYSERR;
560: return;
561: }
562:
563: /* Line number is per-file. */
564:
565: curp->line = 1;
566:
567: mparse_buf_r(curp, blk, 1);
568:
569: if (with_mmap)
570: munmap(blk.buf, blk.sz);
571: else
572: free(blk.buf);
573: }
574:
575: static int
576: read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
577: {
578: struct stat st;
579: size_t off;
580: ssize_t ssz;
581:
582: if (-1 == fstat(fd, &st)) {
583: perror(file);
584: return(0);
585: }
586:
587: /*
588: * If we're a regular file, try just reading in the whole entry
589: * via mmap(). This is faster than reading it into blocks, and
590: * since each file is only a few bytes to begin with, I'm not
591: * concerned that this is going to tank any machines.
592: */
593:
594: if (S_ISREG(st.st_mode)) {
595: if (st.st_size >= (1U << 31)) {
596: fprintf(stderr, "%s: input too large\n", file);
597: return(0);
598: }
599: *with_mmap = 1;
600: fb->sz = (size_t)st.st_size;
601: fb->buf = mmap(NULL, fb->sz, PROT_READ,
602: MAP_FILE|MAP_SHARED, fd, 0);
603: if (fb->buf != MAP_FAILED)
604: return(1);
605: }
606:
607: /*
608: * If this isn't a regular file (like, say, stdin), then we must
609: * go the old way and just read things in bit by bit.
610: */
611:
612: *with_mmap = 0;
613: off = 0;
614: fb->sz = 0;
615: fb->buf = NULL;
616: for (;;) {
617: if (off == fb->sz) {
618: if (fb->sz == (1U << 31)) {
619: fprintf(stderr, "%s: input too large\n", file);
620: break;
621: }
622: resize_buf(fb, 65536);
623: }
624: ssz = read(fd, fb->buf + (int)off, fb->sz - off);
625: if (ssz == 0) {
626: fb->sz = off;
627: return(1);
628: }
629: if (ssz == -1) {
630: perror(file);
631: break;
632: }
633: off += (size_t)ssz;
634: }
635:
636: free(fb->buf);
637: fb->buf = NULL;
638: return(0);
639: }
640:
641: static void
642: mparse_end(struct mparse *curp)
643: {
644:
645: if (MANDOCLEVEL_FATAL <= curp->file_status)
646: return;
647:
648: if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {
649: assert(MANDOCLEVEL_FATAL <= curp->file_status);
650: return;
651: }
652:
653: if (curp->man && ! man_endparse(curp->man)) {
654: assert(MANDOCLEVEL_FATAL <= curp->file_status);
655: return;
656: }
657:
658: if ( ! (curp->man || curp->mdoc)) {
659: mandoc_msg(MANDOCERR_NOTMANUAL, curp, 1, 0, NULL);
660: curp->file_status = MANDOCLEVEL_FATAL;
661: return;
662: }
663:
664: roff_endparse(curp->roff);
665: }
666:
667: static void
668: mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
669: {
670: const char *svfile;
671:
672: if (-1 == fd)
673: if (-1 == (fd = open(file, O_RDONLY, 0))) {
674: perror(file);
675: curp->file_status = MANDOCLEVEL_SYSERR;
676: return;
677: }
678:
679: svfile = curp->file;
680: curp->file = file;
681:
682: pdesc(curp, file, fd);
683:
684: if (0 == re && MANDOCLEVEL_FATAL > curp->file_status)
685: mparse_end(curp);
686:
687: if (STDIN_FILENO != fd && -1 == close(fd))
688: perror(file);
689:
690: curp->file = svfile;
691: }
692:
693: enum mandoclevel
694: mparse_readfd(struct mparse *curp, int fd, const char *file)
695: {
696:
697: mparse_readfd_r(curp, fd, file, 0);
698: return(curp->file_status);
699: }
700:
701: struct mparse *
1.7 schwarze 702: mparse_alloc(enum mparset inttype, enum mandoclevel wlevel,
703: mandocmsg mmsg, void *arg, char *defos)
1.1 schwarze 704: {
705: struct mparse *curp;
706:
707: assert(wlevel <= MANDOCLEVEL_FATAL);
708:
709: curp = mandoc_calloc(1, sizeof(struct mparse));
710:
711: curp->wlevel = wlevel;
712: curp->mmsg = mmsg;
713: curp->arg = arg;
714: curp->inttype = inttype;
1.7 schwarze 715: curp->defos = defos;
1.1 schwarze 716:
1.8 schwarze 717: curp->roff = roff_alloc(inttype, curp);
1.1 schwarze 718: return(curp);
719: }
720:
721: void
722: mparse_reset(struct mparse *curp)
723: {
724:
725: roff_reset(curp->roff);
726:
727: if (curp->mdoc)
728: mdoc_reset(curp->mdoc);
729: if (curp->man)
730: man_reset(curp->man);
1.4 schwarze 731: if (curp->secondary)
732: curp->secondary->sz = 0;
1.1 schwarze 733:
734: curp->file_status = MANDOCLEVEL_OK;
735: curp->mdoc = NULL;
736: curp->man = NULL;
737: }
738:
739: void
740: mparse_free(struct mparse *curp)
741: {
742:
743: if (curp->pmdoc)
744: mdoc_free(curp->pmdoc);
745: if (curp->pman)
746: man_free(curp->pman);
747: if (curp->roff)
748: roff_free(curp->roff);
1.4 schwarze 749: if (curp->secondary)
750: free(curp->secondary->buf);
1.1 schwarze 751:
1.4 schwarze 752: free(curp->secondary);
1.1 schwarze 753: free(curp);
754: }
755:
756: void
757: mparse_result(struct mparse *curp, struct mdoc **mdoc, struct man **man)
758: {
759:
760: if (mdoc)
761: *mdoc = curp->mdoc;
762: if (man)
763: *man = curp->man;
764: }
765:
766: void
767: mandoc_vmsg(enum mandocerr t, struct mparse *m,
768: int ln, int pos, const char *fmt, ...)
769: {
770: char buf[256];
771: va_list ap;
772:
773: va_start(ap, fmt);
774: vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
775: va_end(ap);
776:
777: mandoc_msg(t, m, ln, pos, buf);
778: }
779:
780: void
781: mandoc_msg(enum mandocerr er, struct mparse *m,
782: int ln, int col, const char *msg)
783: {
784: enum mandoclevel level;
785:
786: level = MANDOCLEVEL_FATAL;
787: while (er < mandoclimits[level])
788: level--;
789:
790: if (level < m->wlevel)
791: return;
792:
793: if (m->mmsg)
794: (*m->mmsg)(er, level, m->file, ln, col, msg);
795:
796: if (m->file_status < level)
797: m->file_status = level;
798: }
799:
800: const char *
801: mparse_strerror(enum mandocerr er)
802: {
803:
804: return(mandocerrs[er]);
805: }
806:
807: const char *
808: mparse_strlevel(enum mandoclevel lvl)
809: {
810: return(mandoclevels[lvl]);
1.4 schwarze 811: }
812:
813: void
814: mparse_keep(struct mparse *p)
815: {
816:
817: assert(NULL == p->secondary);
818: p->secondary = mandoc_calloc(1, sizeof(struct buf));
819: }
820:
821: const char *
822: mparse_getkeep(const struct mparse *p)
823: {
824:
825: assert(p->secondary);
826: return(p->secondary->sz ? p->secondary->buf : NULL);
1.1 schwarze 827: }