Annotation of mandoc/read.c, Revision 1.57
1.57 ! schwarze 1: /* $Id: read.c,v 1.56 2014/07/02 11:43:20 schwarze Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.40 schwarze 4: * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
1.42 schwarze 5: * Copyright (c) 2010, 2012 Joerg Sonnenberger <joerg@netbsd.org>
1.1 kristaps 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 AUTHOR DISCLAIMS ALL WARRANTIES
12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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: */
1.11 kristaps 19: #ifdef HAVE_CONFIG_H
20: #include "config.h"
21: #endif
22:
1.15 kristaps 23: #ifdef HAVE_MMAP
24: # include <sys/stat.h>
25: # include <sys/mman.h>
26: #endif
1.1 kristaps 27:
28: #include <assert.h>
29: #include <ctype.h>
1.40 schwarze 30: #include <errno.h>
1.1 kristaps 31: #include <fcntl.h>
1.3 kristaps 32: #include <stdarg.h>
1.28 joerg 33: #include <stdint.h>
1.1 kristaps 34: #include <stdio.h>
35: #include <stdlib.h>
36: #include <string.h>
37: #include <unistd.h>
38:
39: #include "mandoc.h"
1.46 schwarze 40: #include "mandoc_aux.h"
1.3 kristaps 41: #include "libmandoc.h"
1.1 kristaps 42: #include "mdoc.h"
43: #include "man.h"
1.28 joerg 44: #include "main.h"
1.1 kristaps 45:
46: #define REPARSE_LIMIT 1000
47:
48: struct buf {
1.47 schwarze 49: char *buf; /* binary input buffer */
1.1 kristaps 50: size_t sz; /* size of binary buffer */
51: };
52:
53: struct mparse {
54: enum mandoclevel file_status; /* status of current parse */
1.3 kristaps 55: enum mandoclevel wlevel; /* ignore messages below this */
1.1 kristaps 56: int line; /* line number in the file */
1.44 schwarze 57: int options; /* parser options */
1.1 kristaps 58: struct man *pman; /* persistent man parser */
59: struct mdoc *pmdoc; /* persistent mdoc parser */
60: struct man *man; /* man parser */
61: struct mdoc *mdoc; /* mdoc parser */
62: struct roff *roff; /* roff parser (!NULL) */
1.45 schwarze 63: char *sodest; /* filename pointed to by .so */
1.1 kristaps 64: int reparse_count; /* finite interp. stack */
65: mandocmsg mmsg; /* warning/error message handler */
1.47 schwarze 66: const char *file;
1.24 kristaps 67: struct buf *secondary;
1.29 schwarze 68: char *defos; /* default operating system */
1.1 kristaps 69: };
70:
71: static void resize_buf(struct buf *, size_t);
72: static void mparse_buf_r(struct mparse *, struct buf, int);
73: static void pset(const char *, int, struct mparse *);
1.40 schwarze 74: static int read_whole_file(struct mparse *, const char *, int,
75: struct buf *, int *);
1.1 kristaps 76: static void mparse_end(struct mparse *);
1.37 schwarze 77: static void mparse_parse_buffer(struct mparse *, struct buf,
78: const char *);
1.1 kristaps 79:
1.3 kristaps 80: static const enum mandocerr mandoclimits[MANDOCLEVEL_MAX] = {
81: MANDOCERR_OK,
82: MANDOCERR_WARNING,
83: MANDOCERR_WARNING,
84: MANDOCERR_ERROR,
85: MANDOCERR_FATAL,
86: MANDOCERR_MAX,
87: MANDOCERR_MAX
88: };
89:
1.7 kristaps 90: static const char * const mandocerrs[MANDOCERR_MAX] = {
91: "ok",
92:
93: "generic warning",
94:
95: /* related to the prologue */
1.54 schwarze 96: "missing .TH macro, using \"unknown 1\"",
97: "lower case character in document title",
1.7 kristaps 98: "unknown manual section",
1.32 schwarze 99: "unknown manual volume or arch",
1.54 schwarze 100: "missing date, using today's date",
1.7 kristaps 101: "cannot parse date, using it verbatim",
102: "prologue macros out of order",
103: "duplicate prologue macro",
1.54 schwarze 104: "incomplete prologue, terminated by",
105: "skipping prologue macro in body",
1.7 kristaps 106:
107: /* related to document structure */
108: ".so is fragile, better use ln(1)",
1.50 schwarze 109: "no document body",
1.54 schwarze 110: "content before first section header",
111: "first section is not \"NAME\"",
1.7 kristaps 112: "bad NAME section contents",
113: "sections out of conventional order",
1.54 schwarze 114: "duplicate section title",
115: "unexpected section",
1.7 kristaps 116:
117: /* related to macros and nesting */
1.55 schwarze 118: "obsolete macro",
1.7 kristaps 119: "skipping paragraph macro",
1.31 schwarze 120: "moving paragraph macro out of list",
1.7 kristaps 121: "skipping no-space macro",
122: "blocks badly nested",
123: "nested displays are not portable",
1.57 ! schwarze 124: "moving content out of list",
! 125: ".Vt block has child macro",
1.56 schwarze 126: "fill mode already enabled, skipping .fi",
127: "fill mode already disabled, skipping .nf",
1.7 kristaps 128: "line scope broken",
129:
130: /* related to missing macro arguments */
131: "skipping empty macro",
132: "argument count wrong",
133: "missing display type",
134: "list type must come first",
135: "tag lists require a width argument",
136: "missing font type",
137:
138: /* related to bad macro arguments */
139: "skipping argument",
140: "duplicate argument",
141: "duplicate display type",
142: "duplicate list type",
143: "unknown AT&T UNIX version",
144: "bad Boolean value",
145: "unknown font",
146: "unknown standard specifier",
147: "bad width argument",
148:
149: /* related to plain text */
150: "blank line in non-literal context",
151: "tab in non-literal context",
152: "end of line whitespace",
153: "bad comment style",
1.12 kristaps 154: "bad escape sequence",
1.7 kristaps 155: "unterminated quoted string",
1.16 kristaps 156:
1.7 kristaps 157: "generic error",
1.17 kristaps 158:
159: /* related to equations */
1.20 kristaps 160: "unexpected equation scope closure",
161: "equation scope open on exit",
1.21 kristaps 162: "overlapping equation scopes",
163: "unexpected end of equation",
164: "equation syntax error",
1.7 kristaps 165:
166: /* related to tables */
167: "bad table syntax",
168: "bad table option",
169: "bad table layout",
170: "no table layout cells specified",
171: "no table data cells specified",
172: "ignore data in cell",
173: "data block still open",
174: "ignoring extra data cells",
175:
176: "input stack limit exceeded, infinite loop?",
177: "skipping bad character",
178: "escaped character not allowed in a name",
1.30 schwarze 179: "manual name not yet set",
1.54 schwarze 180: "skipping text before first section header",
1.7 kristaps 181: "skipping unknown macro",
182: "NOT IMPLEMENTED, please use groff: skipping request",
183: "argument count wrong",
1.57 ! schwarze 184: "skipping invalid content in .Rs block",
1.34 schwarze 185: "skipping column outside column list",
1.7 kristaps 186: "skipping end of block that is not open",
187: "missing end of block",
188: "scope open on exit",
189: "uname(3) system call failed",
190: "macro requires line argument(s)",
191: "macro requires body argument(s)",
192: "macro requires argument(s)",
1.38 schwarze 193: "request requires a numeric argument",
1.7 kristaps 194: "missing list type",
195: "line argument(s) will be lost",
196:
197: "generic fatal error",
198:
1.40 schwarze 199: "input too large",
1.7 kristaps 200: "not a manual",
201: "column syntax is inconsistent",
202: "NOT IMPLEMENTED: .Bd -file",
203: "argument count wrong, violates syntax",
204: "child violates parent syntax",
205: "argument count wrong, violates syntax",
206: "NOT IMPLEMENTED: .so with absolute path or \"..\"",
1.52 schwarze 207: ".so request failed",
1.7 kristaps 208: "no document prologue",
209: "static buffer exhausted",
1.40 schwarze 210:
211: /* system errors */
1.51 schwarze 212: NULL,
1.40 schwarze 213: "cannot stat file",
214: "cannot read file",
1.7 kristaps 215: };
216:
217: static const char * const mandoclevels[MANDOCLEVEL_MAX] = {
218: "SUCCESS",
219: "RESERVED",
220: "WARNING",
221: "ERROR",
222: "FATAL",
223: "BADARG",
224: "SYSERR"
225: };
226:
1.47 schwarze 227:
1.1 kristaps 228: static void
229: resize_buf(struct buf *buf, size_t initial)
230: {
231:
232: buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
233: buf->buf = mandoc_realloc(buf->buf, buf->sz);
234: }
235:
236: static void
237: pset(const char *buf, int pos, struct mparse *curp)
238: {
239: int i;
240:
241: /*
242: * Try to intuit which kind of manual parser should be used. If
243: * passed in by command-line (-man, -mdoc), then use that
244: * explicitly. If passed as -mandoc, then try to guess from the
245: * line: either skip dot-lines, use -mdoc when finding `.Dt', or
246: * default to -man, which is more lenient.
247: *
248: * Separate out pmdoc/pman from mdoc/man: the first persists
249: * through all parsers, while the latter is used per-parse.
250: */
251:
252: if ('.' == buf[0] || '\'' == buf[0]) {
253: for (i = 1; buf[i]; i++)
254: if (' ' != buf[i] && '\t' != buf[i])
255: break;
256: if ('\0' == buf[i])
257: return;
258: }
259:
1.44 schwarze 260: if (MPARSE_MDOC & curp->options) {
1.47 schwarze 261: if (NULL == curp->pmdoc)
1.44 schwarze 262: curp->pmdoc = mdoc_alloc(
263: curp->roff, curp, curp->defos,
264: MPARSE_QUICK & curp->options ? 1 : 0);
1.1 kristaps 265: assert(curp->pmdoc);
266: curp->mdoc = curp->pmdoc;
267: return;
1.44 schwarze 268: } else if (MPARSE_MAN & curp->options) {
1.47 schwarze 269: if (NULL == curp->pman)
1.41 schwarze 270: curp->pman = man_alloc(curp->roff, curp,
1.44 schwarze 271: MPARSE_QUICK & curp->options ? 1 : 0);
1.1 kristaps 272: assert(curp->pman);
273: curp->man = curp->pman;
274: return;
275: }
276:
277: if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) {
1.47 schwarze 278: if (NULL == curp->pmdoc)
1.44 schwarze 279: curp->pmdoc = mdoc_alloc(
280: curp->roff, curp, curp->defos,
281: MPARSE_QUICK & curp->options ? 1 : 0);
1.1 kristaps 282: assert(curp->pmdoc);
283: curp->mdoc = curp->pmdoc;
284: return;
1.47 schwarze 285: }
1.1 kristaps 286:
1.47 schwarze 287: if (NULL == curp->pman)
1.44 schwarze 288: curp->pman = man_alloc(curp->roff, curp,
289: MPARSE_QUICK & curp->options ? 1 : 0);
1.1 kristaps 290: assert(curp->pman);
291: curp->man = curp->pman;
292: }
293:
294: /*
295: * Main parse routine for an opened file. This is called for each
296: * opened file and simply loops around the full input file, possibly
297: * nesting (i.e., with `so').
298: */
299: static void
300: mparse_buf_r(struct mparse *curp, struct buf blk, int start)
301: {
302: const struct tbl_span *span;
303: struct buf ln;
304: enum rofferr rr;
305: int i, of, rc;
306: int pos; /* byte number in the ln buffer */
307: int lnn; /* line number in the real file */
308: unsigned char c;
309:
310: memset(&ln, 0, sizeof(struct buf));
311:
1.47 schwarze 312: lnn = curp->line;
313: pos = 0;
1.1 kristaps 314:
315: for (i = 0; i < (int)blk.sz; ) {
316: if (0 == pos && '\0' == blk.buf[i])
317: break;
318:
319: if (start) {
320: curp->line = lnn;
321: curp->reparse_count = 0;
322: }
323:
324: while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
325:
326: /*
327: * When finding an unescaped newline character,
328: * leave the character loop to process the line.
329: * Skip a preceding carriage return, if any.
330: */
331:
332: if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz &&
333: '\n' == blk.buf[i + 1])
334: ++i;
335: if ('\n' == blk.buf[i]) {
336: ++i;
337: ++lnn;
338: break;
339: }
340:
1.35 schwarze 341: /*
342: * Make sure we have space for at least
343: * one backslash and one other character
344: * and the trailing NUL byte.
345: */
346:
347: if (pos + 2 >= (int)ln.sz)
348: resize_buf(&ln, 256);
349:
1.47 schwarze 350: /*
1.1 kristaps 351: * Warn about bogus characters. If you're using
352: * non-ASCII encoding, you're screwing your
353: * readers. Since I'd rather this not happen,
1.27 joerg 354: * I'll be helpful and replace these characters
355: * with "?", so we don't display gibberish.
356: * Note to manual writers: use special characters.
1.1 kristaps 357: */
358:
359: c = (unsigned char) blk.buf[i];
360:
1.47 schwarze 361: if ( ! (isascii(c) &&
362: (isgraph(c) || isblank(c)))) {
1.3 kristaps 363: mandoc_msg(MANDOCERR_BADCHAR, curp,
1.47 schwarze 364: curp->line, pos, NULL);
1.1 kristaps 365: i++;
1.27 joerg 366: ln.buf[pos++] = '?';
1.1 kristaps 367: continue;
368: }
369:
370: /* Trailing backslash = a plain char. */
371:
372: if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
373: ln.buf[pos++] = blk.buf[i++];
374: continue;
375: }
376:
377: /*
378: * Found escape and at least one other character.
379: * When it's a newline character, skip it.
380: * When there is a carriage return in between,
381: * skip that one as well.
382: */
383:
384: if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz &&
385: '\n' == blk.buf[i + 2])
386: ++i;
387: if ('\n' == blk.buf[i + 1]) {
388: i += 2;
389: ++lnn;
390: continue;
391: }
392:
1.13 kristaps 393: if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
1.1 kristaps 394: i += 2;
395: /* Comment, skip to end of line */
396: for (; i < (int)blk.sz; ++i) {
397: if ('\n' == blk.buf[i]) {
398: ++i;
399: ++lnn;
400: break;
401: }
402: }
403:
404: /* Backout trailing whitespaces */
405: for (; pos > 0; --pos) {
406: if (ln.buf[pos - 1] != ' ')
407: break;
408: if (pos > 2 && ln.buf[pos - 2] == '\\')
409: break;
410: }
411: break;
412: }
413:
1.35 schwarze 414: /* Catch escaped bogus characters. */
415:
416: c = (unsigned char) blk.buf[i+1];
417:
1.47 schwarze 418: if ( ! (isascii(c) &&
419: (isgraph(c) || isblank(c)))) {
1.35 schwarze 420: mandoc_msg(MANDOCERR_BADCHAR, curp,
1.47 schwarze 421: curp->line, pos, NULL);
1.35 schwarze 422: i += 2;
423: ln.buf[pos++] = '?';
424: continue;
425: }
426:
1.1 kristaps 427: /* Some other escape sequence, copy & cont. */
428:
429: ln.buf[pos++] = blk.buf[i++];
430: ln.buf[pos++] = blk.buf[i++];
431: }
432:
1.47 schwarze 433: if (pos >= (int)ln.sz)
1.1 kristaps 434: resize_buf(&ln, 256);
435:
436: ln.buf[pos] = '\0';
437:
438: /*
439: * A significant amount of complexity is contained by
440: * the roff preprocessor. It's line-oriented but can be
441: * expressed on one line, so we need at times to
442: * readjust our starting point and re-run it. The roff
443: * preprocessor can also readjust the buffers with new
444: * data, so we pass them in wholesale.
445: */
446:
447: of = 0;
448:
1.24 kristaps 449: /*
450: * Maintain a lookaside buffer of all parsed lines. We
451: * only do this if mparse_keep() has been invoked (the
452: * buffer may be accessed with mparse_getkeep()).
453: */
454:
455: if (curp->secondary) {
1.47 schwarze 456: curp->secondary->buf = mandoc_realloc(
457: curp->secondary->buf,
458: curp->secondary->sz + pos + 2);
459: memcpy(curp->secondary->buf +
460: curp->secondary->sz,
461: ln.buf, pos);
1.24 kristaps 462: curp->secondary->sz += pos;
463: curp->secondary->buf
464: [curp->secondary->sz] = '\n';
465: curp->secondary->sz++;
466: curp->secondary->buf
467: [curp->secondary->sz] = '\0';
468: }
1.1 kristaps 469: rerun:
1.47 schwarze 470: rr = roff_parseln(curp->roff, curp->line,
471: &ln.buf, &ln.sz, of, &of);
1.1 kristaps 472:
473: switch (rr) {
1.47 schwarze 474: case ROFF_REPARSE:
1.1 kristaps 475: if (REPARSE_LIMIT >= ++curp->reparse_count)
476: mparse_buf_r(curp, ln, 0);
477: else
1.3 kristaps 478: mandoc_msg(MANDOCERR_ROFFLOOP, curp,
1.47 schwarze 479: curp->line, pos, NULL);
1.1 kristaps 480: pos = 0;
481: continue;
1.47 schwarze 482: case ROFF_APPEND:
1.1 kristaps 483: pos = (int)strlen(ln.buf);
484: continue;
1.47 schwarze 485: case ROFF_RERUN:
1.1 kristaps 486: goto rerun;
1.47 schwarze 487: case ROFF_IGN:
1.1 kristaps 488: pos = 0;
489: continue;
1.47 schwarze 490: case ROFF_ERR:
1.1 kristaps 491: assert(MANDOCLEVEL_FATAL <= curp->file_status);
492: break;
1.47 schwarze 493: case ROFF_SO:
1.45 schwarze 494: if (0 == (MPARSE_SO & curp->options) &&
495: (i >= (int)blk.sz || '\0' == blk.buf[i])) {
496: curp->sodest = mandoc_strdup(ln.buf + of);
497: free(ln.buf);
498: return;
499: }
1.24 kristaps 500: /*
501: * We remove `so' clauses from our lookaside
502: * buffer because we're going to descend into
503: * the file recursively.
504: */
1.47 schwarze 505: if (curp->secondary)
1.25 kristaps 506: curp->secondary->sz -= pos + 1;
1.36 schwarze 507: mparse_readfd(curp, -1, ln.buf + of);
1.52 schwarze 508: if (MANDOCLEVEL_FATAL <= curp->file_status) {
509: mandoc_vmsg(MANDOCERR_SO_FAIL,
510: curp, curp->line, pos,
511: ".so %s", ln.buf + of);
1.1 kristaps 512: break;
1.52 schwarze 513: }
1.1 kristaps 514: pos = 0;
515: continue;
516: default:
517: break;
518: }
519:
520: /*
521: * If we encounter errors in the recursive parse, make
522: * sure we don't continue parsing.
523: */
524:
525: if (MANDOCLEVEL_FATAL <= curp->file_status)
526: break;
527:
528: /*
529: * If input parsers have not been allocated, do so now.
1.14 kristaps 530: * We keep these instanced between parsers, but set them
1.1 kristaps 531: * locally per parse routine since we can use different
532: * parsers with each one.
533: */
534:
535: if ( ! (curp->man || curp->mdoc))
536: pset(ln.buf + of, pos - of, curp);
537:
1.47 schwarze 538: /*
1.1 kristaps 539: * Lastly, push down into the parsers themselves. One
540: * of these will have already been set in the pset()
541: * routine.
542: * If libroff returns ROFF_TBL, then add it to the
543: * currently open parse. Since we only get here if
544: * there does exist data (see tbl_data.c), we're
545: * guaranteed that something's been allocated.
546: * Do the same for ROFF_EQN.
547: */
548:
549: rc = -1;
550:
551: if (ROFF_TBL == rr)
552: while (NULL != (span = roff_span(curp->roff))) {
553: rc = curp->man ?
1.47 schwarze 554: man_addspan(curp->man, span) :
555: mdoc_addspan(curp->mdoc, span);
1.1 kristaps 556: if (0 == rc)
557: break;
558: }
559: else if (ROFF_EQN == rr)
1.47 schwarze 560: rc = curp->mdoc ?
561: mdoc_addeqn(curp->mdoc,
562: roff_eqn(curp->roff)) :
563: man_addeqn(curp->man,
564: roff_eqn(curp->roff));
1.1 kristaps 565: else if (curp->man || curp->mdoc)
566: rc = curp->man ?
1.47 schwarze 567: man_parseln(curp->man,
568: curp->line, ln.buf, of) :
569: mdoc_parseln(curp->mdoc,
570: curp->line, ln.buf, of);
1.1 kristaps 571:
572: if (0 == rc) {
573: assert(MANDOCLEVEL_FATAL <= curp->file_status);
574: break;
1.41 schwarze 575: } else if (2 == rc)
576: break;
1.1 kristaps 577:
578: /* Temporary buffers typically are not full. */
579:
580: if (0 == start && '\0' == blk.buf[i])
581: break;
582:
583: /* Start the next input line. */
584:
585: pos = 0;
586: }
587:
588: free(ln.buf);
589: }
590:
591: static int
1.40 schwarze 592: read_whole_file(struct mparse *curp, const char *file, int fd,
593: struct buf *fb, int *with_mmap)
1.1 kristaps 594: {
595: size_t off;
596: ssize_t ssz;
597:
1.15 kristaps 598: #ifdef HAVE_MMAP
599: struct stat st;
1.1 kristaps 600: if (-1 == fstat(fd, &st)) {
1.40 schwarze 601: curp->file_status = MANDOCLEVEL_SYSERR;
602: if (curp->mmsg)
603: (*curp->mmsg)(MANDOCERR_SYSSTAT, curp->file_status,
604: file, 0, 0, strerror(errno));
1.1 kristaps 605: return(0);
606: }
607:
608: /*
609: * If we're a regular file, try just reading in the whole entry
610: * via mmap(). This is faster than reading it into blocks, and
611: * since each file is only a few bytes to begin with, I'm not
612: * concerned that this is going to tank any machines.
613: */
614:
615: if (S_ISREG(st.st_mode)) {
616: if (st.st_size >= (1U << 31)) {
1.40 schwarze 617: curp->file_status = MANDOCLEVEL_FATAL;
618: if (curp->mmsg)
619: (*curp->mmsg)(MANDOCERR_TOOLARGE,
620: curp->file_status, file, 0, 0, NULL);
1.1 kristaps 621: return(0);
622: }
623: *with_mmap = 1;
624: fb->sz = (size_t)st.st_size;
1.37 schwarze 625: fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0);
1.1 kristaps 626: if (fb->buf != MAP_FAILED)
627: return(1);
628: }
1.15 kristaps 629: #endif
1.1 kristaps 630:
631: /*
632: * If this isn't a regular file (like, say, stdin), then we must
633: * go the old way and just read things in bit by bit.
634: */
635:
636: *with_mmap = 0;
637: off = 0;
638: fb->sz = 0;
639: fb->buf = NULL;
640: for (;;) {
641: if (off == fb->sz) {
642: if (fb->sz == (1U << 31)) {
1.40 schwarze 643: curp->file_status = MANDOCLEVEL_FATAL;
644: if (curp->mmsg)
645: (*curp->mmsg)(MANDOCERR_TOOLARGE,
646: curp->file_status,
647: file, 0, 0, NULL);
1.1 kristaps 648: break;
649: }
650: resize_buf(fb, 65536);
651: }
652: ssz = read(fd, fb->buf + (int)off, fb->sz - off);
653: if (ssz == 0) {
654: fb->sz = off;
655: return(1);
656: }
657: if (ssz == -1) {
1.40 schwarze 658: curp->file_status = MANDOCLEVEL_SYSERR;
659: if (curp->mmsg)
660: (*curp->mmsg)(MANDOCERR_SYSREAD,
661: curp->file_status, file, 0, 0,
662: strerror(errno));
1.1 kristaps 663: break;
664: }
665: off += (size_t)ssz;
666: }
667:
668: free(fb->buf);
669: fb->buf = NULL;
670: return(0);
671: }
672:
673: static void
674: mparse_end(struct mparse *curp)
675: {
676:
677: if (MANDOCLEVEL_FATAL <= curp->file_status)
678: return;
679:
680: if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {
681: assert(MANDOCLEVEL_FATAL <= curp->file_status);
682: return;
683: }
684:
685: if (curp->man && ! man_endparse(curp->man)) {
686: assert(MANDOCLEVEL_FATAL <= curp->file_status);
687: return;
688: }
689:
1.45 schwarze 690: if ( ! (curp->mdoc || curp->man || curp->sodest)) {
1.50 schwarze 691: mandoc_msg(MANDOCERR_NOTMANUAL, curp, 0, 0, NULL);
1.1 kristaps 692: curp->file_status = MANDOCLEVEL_FATAL;
1.6 kristaps 693: return;
1.1 kristaps 694: }
695:
696: roff_endparse(curp->roff);
697: }
698:
699: static void
1.36 schwarze 700: mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)
1.28 joerg 701: {
702: const char *svfile;
1.36 schwarze 703: static int recursion_depth;
704:
705: if (64 < recursion_depth) {
706: mandoc_msg(MANDOCERR_ROFFLOOP, curp, curp->line, 0, NULL);
707: return;
708: }
1.28 joerg 709:
710: /* Line number is per-file. */
711: svfile = curp->file;
712: curp->file = file;
713: curp->line = 1;
1.36 schwarze 714: recursion_depth++;
1.28 joerg 715:
716: mparse_buf_r(curp, blk, 1);
717:
1.36 schwarze 718: if (0 == --recursion_depth && MANDOCLEVEL_FATAL > curp->file_status)
1.28 joerg 719: mparse_end(curp);
720:
721: curp->file = svfile;
722: }
723:
724: enum mandoclevel
725: mparse_readmem(struct mparse *curp, const void *buf, size_t len,
726: const char *file)
727: {
728: struct buf blk;
729:
730: blk.buf = UNCONST(buf);
731: blk.sz = len;
732:
1.36 schwarze 733: mparse_parse_buffer(curp, blk, file);
1.28 joerg 734: return(curp->file_status);
735: }
736:
1.36 schwarze 737: enum mandoclevel
738: mparse_readfd(struct mparse *curp, int fd, const char *file)
1.1 kristaps 739: {
1.28 joerg 740: struct buf blk;
741: int with_mmap;
1.1 kristaps 742:
1.40 schwarze 743: if (-1 == fd && -1 == (fd = open(file, O_RDONLY, 0))) {
744: curp->file_status = MANDOCLEVEL_SYSERR;
745: if (curp->mmsg)
746: (*curp->mmsg)(MANDOCERR_SYSOPEN,
747: curp->file_status,
748: file, 0, 0, strerror(errno));
749: goto out;
750: }
751:
1.28 joerg 752: /*
753: * Run for each opened file; may be called more than once for
754: * each full parse sequence if the opened file is nested (i.e.,
755: * from `so'). Simply sucks in the whole file and moves into
756: * the parse phase for the file.
757: */
1.1 kristaps 758:
1.40 schwarze 759: if ( ! read_whole_file(curp, file, fd, &blk, &with_mmap))
1.36 schwarze 760: goto out;
1.1 kristaps 761:
1.36 schwarze 762: mparse_parse_buffer(curp, blk, file);
1.1 kristaps 763:
1.28 joerg 764: #ifdef HAVE_MMAP
765: if (with_mmap)
766: munmap(blk.buf, blk.sz);
767: else
768: #endif
769: free(blk.buf);
1.1 kristaps 770:
771: if (STDIN_FILENO != fd && -1 == close(fd))
772: perror(file);
1.36 schwarze 773: out:
1.1 kristaps 774: return(curp->file_status);
775: }
776:
777: struct mparse *
1.44 schwarze 778: mparse_alloc(int options, enum mandoclevel wlevel,
779: mandocmsg mmsg, char *defos)
1.1 kristaps 780: {
781: struct mparse *curp;
1.10 kristaps 782:
783: assert(wlevel <= MANDOCLEVEL_FATAL);
1.1 kristaps 784:
785: curp = mandoc_calloc(1, sizeof(struct mparse));
786:
1.44 schwarze 787: curp->options = options;
1.3 kristaps 788: curp->wlevel = wlevel;
1.1 kristaps 789: curp->mmsg = mmsg;
1.29 schwarze 790: curp->defos = defos;
1.1 kristaps 791:
1.44 schwarze 792: curp->roff = roff_alloc(curp, options);
1.1 kristaps 793: return(curp);
794: }
795:
796: void
797: mparse_reset(struct mparse *curp)
798: {
799:
800: roff_reset(curp->roff);
801:
802: if (curp->mdoc)
803: mdoc_reset(curp->mdoc);
804: if (curp->man)
805: man_reset(curp->man);
1.24 kristaps 806: if (curp->secondary)
807: curp->secondary->sz = 0;
1.1 kristaps 808:
809: curp->file_status = MANDOCLEVEL_OK;
810: curp->mdoc = NULL;
811: curp->man = NULL;
1.45 schwarze 812:
813: free(curp->sodest);
814: curp->sodest = NULL;
1.1 kristaps 815: }
816:
817: void
818: mparse_free(struct mparse *curp)
819: {
820:
821: if (curp->pmdoc)
822: mdoc_free(curp->pmdoc);
823: if (curp->pman)
824: man_free(curp->pman);
825: if (curp->roff)
826: roff_free(curp->roff);
1.24 kristaps 827: if (curp->secondary)
828: free(curp->secondary->buf);
1.1 kristaps 829:
1.24 kristaps 830: free(curp->secondary);
1.45 schwarze 831: free(curp->sodest);
1.1 kristaps 832: free(curp);
833: }
834:
835: void
1.45 schwarze 836: mparse_result(struct mparse *curp,
837: struct mdoc **mdoc, struct man **man, char **sodest)
1.1 kristaps 838: {
839:
1.45 schwarze 840: if (sodest && NULL != (*sodest = curp->sodest)) {
841: *mdoc = NULL;
842: *man = NULL;
843: return;
844: }
1.9 kristaps 845: if (mdoc)
846: *mdoc = curp->mdoc;
847: if (man)
848: *man = curp->man;
1.3 kristaps 849: }
850:
851: void
852: mandoc_vmsg(enum mandocerr t, struct mparse *m,
853: int ln, int pos, const char *fmt, ...)
854: {
855: char buf[256];
856: va_list ap;
857:
858: va_start(ap, fmt);
1.48 schwarze 859: (void)vsnprintf(buf, sizeof(buf), fmt, ap);
1.3 kristaps 860: va_end(ap);
861:
862: mandoc_msg(t, m, ln, pos, buf);
863: }
864:
865: void
1.47 schwarze 866: mandoc_msg(enum mandocerr er, struct mparse *m,
1.3 kristaps 867: int ln, int col, const char *msg)
868: {
869: enum mandoclevel level;
870:
871: level = MANDOCLEVEL_FATAL;
872: while (er < mandoclimits[level])
873: level--;
874:
875: if (level < m->wlevel)
876: return;
877:
1.8 kristaps 878: if (m->mmsg)
879: (*m->mmsg)(er, level, m->file, ln, col, msg);
1.3 kristaps 880:
881: if (m->file_status < level)
882: m->file_status = level;
1.7 kristaps 883: }
884:
885: const char *
886: mparse_strerror(enum mandocerr er)
887: {
888:
889: return(mandocerrs[er]);
890: }
891:
892: const char *
893: mparse_strlevel(enum mandoclevel lvl)
894: {
895: return(mandoclevels[lvl]);
1.24 kristaps 896: }
897:
898: void
899: mparse_keep(struct mparse *p)
900: {
901:
902: assert(NULL == p->secondary);
903: p->secondary = mandoc_calloc(1, sizeof(struct buf));
904: }
905:
906: const char *
907: mparse_getkeep(const struct mparse *p)
908: {
909:
910: assert(p->secondary);
911: return(p->secondary->sz ? p->secondary->buf : NULL);
1.1 kristaps 912: }
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