Annotation of mandoc/read.c, Revision 1.140
1.140 ! schwarze 1: /* $Id: read.c,v 1.139 2015/04/19 14:25:41 schwarze Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.107 schwarze 4: * Copyright (c) 2010-2015 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: *
1.133 schwarze 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 kristaps 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.133 schwarze 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 kristaps 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: #include "config.h"
20:
1.80 schwarze 21: #include <sys/types.h>
1.81 schwarze 22: #if HAVE_MMAP
1.82 schwarze 23: #include <sys/mman.h>
1.80 schwarze 24: #include <sys/stat.h>
1.15 kristaps 25: #endif
1.1 kristaps 26:
27: #include <assert.h>
28: #include <ctype.h>
1.40 schwarze 29: #include <errno.h>
1.1 kristaps 30: #include <fcntl.h>
1.3 kristaps 31: #include <stdarg.h>
1.28 joerg 32: #include <stdint.h>
1.1 kristaps 33: #include <stdio.h>
34: #include <stdlib.h>
35: #include <string.h>
36: #include <unistd.h>
1.140 ! schwarze 37: #include <zlib.h>
1.1 kristaps 38:
1.133 schwarze 39: #include "mandoc_aux.h"
1.1 kristaps 40: #include "mandoc.h"
1.133 schwarze 41: #include "roff.h"
1.1 kristaps 42: #include "mdoc.h"
43: #include "man.h"
1.133 schwarze 44: #include "libmandoc.h"
1.139 schwarze 45: #include "roff_int.h"
1.1 kristaps 46:
47: #define REPARSE_LIMIT 1000
48:
49: struct mparse {
1.134 schwarze 50: struct roff_man *man; /* man parser */
1.1 kristaps 51: struct roff *roff; /* roff parser (!NULL) */
1.94 schwarze 52: const struct mchars *mchars; /* character table */
1.45 schwarze 53: char *sodest; /* filename pointed to by .so */
1.83 schwarze 54: const char *file; /* filename of current input file */
55: struct buf *primary; /* buffer currently being parsed */
56: struct buf *secondary; /* preprocessed copy of input */
57: const char *defos; /* default operating system */
58: mandocmsg mmsg; /* warning/error message handler */
59: enum mandoclevel file_status; /* status of current parse */
60: enum mandoclevel wlevel; /* ignore messages below this */
61: int options; /* parser options */
1.140 ! schwarze 62: int gzip; /* current input file is gzipped */
1.93 schwarze 63: int filenc; /* encoding of the current file */
1.1 kristaps 64: int reparse_count; /* finite interp. stack */
1.83 schwarze 65: int line; /* line number in the file */
1.1 kristaps 66: };
67:
1.84 schwarze 68: static void choose_parser(struct mparse *);
1.1 kristaps 69: static void resize_buf(struct buf *, size_t);
1.95 schwarze 70: static void mparse_buf_r(struct mparse *, struct buf, size_t, int);
1.40 schwarze 71: static int read_whole_file(struct mparse *, const char *, int,
72: struct buf *, int *);
1.1 kristaps 73: static void mparse_end(struct mparse *);
1.37 schwarze 74: static void mparse_parse_buffer(struct mparse *, struct buf,
75: const char *);
1.1 kristaps 76:
1.3 kristaps 77: static const enum mandocerr mandoclimits[MANDOCLEVEL_MAX] = {
78: MANDOCERR_OK,
79: MANDOCERR_WARNING,
80: MANDOCERR_WARNING,
81: MANDOCERR_ERROR,
1.112 schwarze 82: MANDOCERR_UNSUPP,
1.3 kristaps 83: MANDOCERR_MAX,
84: MANDOCERR_MAX
85: };
86:
1.7 kristaps 87: static const char * const mandocerrs[MANDOCERR_MAX] = {
88: "ok",
89:
90: "generic warning",
91:
92: /* related to the prologue */
1.79 schwarze 93: "missing manual title, using UNTITLED",
94: "missing manual title, using \"\"",
1.54 schwarze 95: "lower case character in document title",
1.79 schwarze 96: "missing manual section, using \"\"",
1.7 kristaps 97: "unknown manual section",
1.54 schwarze 98: "missing date, using today's date",
1.7 kristaps 99: "cannot parse date, using it verbatim",
1.79 schwarze 100: "missing Os macro, using \"\"",
101: "duplicate prologue macro",
102: "late prologue macro",
103: "skipping late title macro",
1.7 kristaps 104: "prologue macros out of order",
105:
106: /* related to document structure */
107: ".so is fragile, better use ln(1)",
1.50 schwarze 108: "no document body",
1.54 schwarze 109: "content before first section header",
110: "first section is not \"NAME\"",
1.128 schwarze 111: "NAME section without name",
112: "NAME section without description",
113: "description not at the end of NAME",
114: "bad NAME section content",
1.121 schwarze 115: "missing description line, using \"\"",
1.7 kristaps 116: "sections out of conventional order",
1.54 schwarze 117: "duplicate section title",
118: "unexpected section",
1.87 schwarze 119: "unusual Xr order",
120: "unusual Xr punctuation",
1.86 schwarze 121: "AUTHORS section without An macro",
1.7 kristaps 122:
123: /* related to macros and nesting */
1.55 schwarze 124: "obsolete macro",
1.102 schwarze 125: "macro neither callable nor escaped",
1.7 kristaps 126: "skipping paragraph macro",
1.31 schwarze 127: "moving paragraph macro out of list",
1.7 kristaps 128: "skipping no-space macro",
129: "blocks badly nested",
130: "nested displays are not portable",
1.57 schwarze 131: "moving content out of list",
132: ".Vt block has child macro",
1.78 schwarze 133: "fill mode already enabled, skipping",
134: "fill mode already disabled, skipping",
1.7 kristaps 135: "line scope broken",
136:
137: /* related to missing macro arguments */
1.58 schwarze 138: "skipping empty request",
139: "conditional request controls empty scope",
1.7 kristaps 140: "skipping empty macro",
1.124 schwarze 141: "empty block",
1.62 schwarze 142: "empty argument, using 0n",
1.60 schwarze 143: "missing display type, using -ragged",
144: "list type is not the first argument",
145: "missing -width in -tag list, using 8n",
1.78 schwarze 146: "missing utility name, using \"\"",
1.123 schwarze 147: "missing function name, using \"\"",
1.60 schwarze 148: "empty head in list item",
149: "empty list item",
1.61 schwarze 150: "missing font type, using \\fR",
151: "unknown font type, using \\fR",
1.103 schwarze 152: "nothing follows prefix",
1.122 schwarze 153: "empty reference block",
1.60 schwarze 154: "missing -std argument, adding it",
1.125 schwarze 155: "missing option string, using \"\"",
156: "missing resource identifier, using \"\"",
1.90 schwarze 157: "missing eqn box, using \"\"",
1.7 kristaps 158:
159: /* related to bad macro arguments */
1.64 schwarze 160: "unterminated quoted argument",
1.7 kristaps 161: "duplicate argument",
1.76 schwarze 162: "skipping duplicate argument",
1.63 schwarze 163: "skipping duplicate display type",
164: "skipping duplicate list type",
1.76 schwarze 165: "skipping -width argument",
1.126 schwarze 166: "wrong number of cells",
1.7 kristaps 167: "unknown AT&T UNIX version",
1.88 schwarze 168: "comma in function argument",
1.89 schwarze 169: "parenthesis in function name",
1.67 schwarze 170: "invalid content in Rs block",
1.63 schwarze 171: "invalid Boolean argument",
172: "unknown font, skipping request",
1.126 schwarze 173: "odd number of characters in request",
1.7 kristaps 174:
175: /* related to plain text */
1.64 schwarze 176: "blank line in fill mode, using .sp",
177: "tab in filled text",
178: "whitespace at end of input line",
1.7 kristaps 179: "bad comment style",
1.64 schwarze 180: "invalid escape sequence",
181: "undefined string, using \"\"",
1.16 kristaps 182:
1.118 schwarze 183: /* related to tables */
184: "tbl line starts with span",
185: "tbl column starts with span",
186: "skipping vertical bar in tbl layout",
187:
1.7 kristaps 188: "generic error",
189:
190: /* related to tables */
1.116 schwarze 191: "non-alphabetic character in tbl options",
192: "skipping unknown tbl option",
193: "missing tbl option argument",
194: "wrong tbl option argument size",
1.118 schwarze 195: "empty tbl layout",
196: "invalid character in tbl layout",
197: "unmatched parenthesis in tbl layout",
1.119 schwarze 198: "tbl without any data cells",
199: "ignoring data in spanned tbl cell",
200: "ignoring extra tbl data cells",
201: "data block open at end of tbl",
1.7 kristaps 202:
1.68 schwarze 203: /* related to document structure and macros */
1.108 schwarze 204: NULL,
1.7 kristaps 205: "input stack limit exceeded, infinite loop?",
206: "skipping bad character",
1.68 schwarze 207: "skipping unknown macro",
1.112 schwarze 208: "skipping insecure request",
1.73 schwarze 209: "skipping item outside list",
1.68 schwarze 210: "skipping column outside column list",
211: "skipping end of block that is not open",
1.115 schwarze 212: "fewer RS blocks open, skipping",
1.68 schwarze 213: "inserting missing end of block",
214: "appending missing end of block",
215:
216: /* related to request and macro arguments */
1.7 kristaps 217: "escaped character not allowed in a name",
1.99 schwarze 218: "NOT IMPLEMENTED: Bd -file",
1.71 schwarze 219: "missing list type, using -item",
1.70 schwarze 220: "missing manual name, using \"\"",
1.71 schwarze 221: "uname(3) system call failed, using UNKNOWN",
1.63 schwarze 222: "unknown standard specifier",
1.71 schwarze 223: "skipping request without numeric argument",
1.109 schwarze 224: "NOT IMPLEMENTED: .so with absolute path or \"..\"",
1.110 schwarze 225: ".so request failed",
1.61 schwarze 226: "skipping all arguments",
227: "skipping excess arguments",
1.92 kristaps 228: "divide by zero",
1.112 schwarze 229:
230: "unsupported feature",
231: "input too large",
1.114 schwarze 232: "unsupported control character",
1.112 schwarze 233: "unsupported roff request",
1.119 schwarze 234: "eqn delim option in tbl",
1.118 schwarze 235: "unsupported tbl layout modifier",
1.112 schwarze 236: "ignoring macro in table",
1.7 kristaps 237: };
238:
239: static const char * const mandoclevels[MANDOCLEVEL_MAX] = {
240: "SUCCESS",
241: "RESERVED",
242: "WARNING",
243: "ERROR",
1.112 schwarze 244: "UNSUPP",
1.7 kristaps 245: "BADARG",
246: "SYSERR"
247: };
248:
1.47 schwarze 249:
1.1 kristaps 250: static void
251: resize_buf(struct buf *buf, size_t initial)
252: {
253:
254: buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
255: buf->buf = mandoc_realloc(buf->buf, buf->sz);
256: }
257:
258: static void
1.84 schwarze 259: choose_parser(struct mparse *curp)
1.1 kristaps 260: {
1.83 schwarze 261: char *cp, *ep;
262: int format;
1.1 kristaps 263:
1.83 schwarze 264: /*
265: * If neither command line arguments -mdoc or -man select
266: * a parser nor the roff parser found a .Dd or .TH macro
267: * yet, look ahead in the main input buffer.
268: */
269:
270: if ((format = roff_getformat(curp->roff)) == 0) {
271: cp = curp->primary->buf;
272: ep = cp + curp->primary->sz;
273: while (cp < ep) {
1.85 schwarze 274: if (*cp == '.' || *cp == '\'') {
1.83 schwarze 275: cp++;
276: if (cp[0] == 'D' && cp[1] == 'd') {
277: format = MPARSE_MDOC;
278: break;
279: }
280: if (cp[0] == 'T' && cp[1] == 'H') {
281: format = MPARSE_MAN;
282: break;
283: }
284: }
285: cp = memchr(cp, '\n', ep - cp);
286: if (cp == NULL)
287: break;
288: cp++;
289: }
1.1 kristaps 290: }
291:
1.137 schwarze 292: if (curp->man == NULL) {
293: curp->man = roff_man_alloc(curp->roff, curp, curp->defos,
294: curp->options & MPARSE_QUICK ? 1 : 0);
295: curp->man->macroset = MACROSET_MAN;
1.138 schwarze 296: curp->man->first->tok = TOKEN_NONE;
1.137 schwarze 297: }
298:
1.83 schwarze 299: if (format == MPARSE_MDOC) {
1.136 schwarze 300: mdoc_hash_init();
1.137 schwarze 301: curp->man->macroset = MACROSET_MDOC;
1.138 schwarze 302: curp->man->first->tok = TOKEN_NONE;
1.137 schwarze 303: } else {
304: man_hash_init();
305: curp->man->macroset = MACROSET_MAN;
1.138 schwarze 306: curp->man->first->tok = TOKEN_NONE;
1.47 schwarze 307: }
1.1 kristaps 308: }
309:
310: /*
1.95 schwarze 311: * Main parse routine for a buffer.
312: * It assumes encoding and line numbering are already set up.
313: * It can recurse directly (for invocations of user-defined
314: * macros, inline equations, and input line traps)
315: * and indirectly (for .so file inclusion).
1.1 kristaps 316: */
317: static void
1.95 schwarze 318: mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)
1.1 kristaps 319: {
320: const struct tbl_span *span;
321: struct buf ln;
1.113 schwarze 322: const char *save_file;
1.110 schwarze 323: char *cp;
1.95 schwarze 324: size_t pos; /* byte number in the ln buffer */
1.1 kristaps 325: enum rofferr rr;
1.100 schwarze 326: int of;
1.1 kristaps 327: int lnn; /* line number in the real file */
1.110 schwarze 328: int fd;
1.1 kristaps 329: unsigned char c;
330:
1.95 schwarze 331: memset(&ln, 0, sizeof(ln));
1.1 kristaps 332:
1.47 schwarze 333: lnn = curp->line;
334: pos = 0;
1.1 kristaps 335:
1.95 schwarze 336: while (i < blk.sz) {
1.1 kristaps 337: if (0 == pos && '\0' == blk.buf[i])
338: break;
339:
340: if (start) {
341: curp->line = lnn;
342: curp->reparse_count = 0;
1.93 schwarze 343:
344: if (lnn < 3 &&
345: curp->filenc & MPARSE_UTF8 &&
1.95 schwarze 346: curp->filenc & MPARSE_LATIN1)
347: curp->filenc = preconv_cue(&blk, i);
1.1 kristaps 348: }
349:
1.95 schwarze 350: while (i < blk.sz && (start || blk.buf[i] != '\0')) {
1.1 kristaps 351:
352: /*
353: * When finding an unescaped newline character,
354: * leave the character loop to process the line.
355: * Skip a preceding carriage return, if any.
356: */
357:
1.95 schwarze 358: if ('\r' == blk.buf[i] && i + 1 < blk.sz &&
1.1 kristaps 359: '\n' == blk.buf[i + 1])
360: ++i;
361: if ('\n' == blk.buf[i]) {
362: ++i;
363: ++lnn;
364: break;
365: }
366:
1.35 schwarze 367: /*
1.93 schwarze 368: * Make sure we have space for the worst
369: * case of 11 bytes: "\\[u10ffff]\0"
1.35 schwarze 370: */
371:
1.95 schwarze 372: if (pos + 11 > ln.sz)
1.35 schwarze 373: resize_buf(&ln, 256);
374:
1.47 schwarze 375: /*
1.93 schwarze 376: * Encode 8-bit input.
1.1 kristaps 377: */
378:
1.93 schwarze 379: c = blk.buf[i];
380: if (c & 0x80) {
1.95 schwarze 381: if ( ! (curp->filenc && preconv_encode(
382: &blk, &i, &ln, &pos, &curp->filenc))) {
1.114 schwarze 383: mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,
384: curp->line, pos, "0x%x", c);
1.93 schwarze 385: ln.buf[pos++] = '?';
386: i++;
387: }
388: continue;
389: }
390:
391: /*
392: * Exclude control characters.
393: */
1.1 kristaps 394:
1.93 schwarze 395: if (c == 0x7f || (c < 0x20 && c != 0x09)) {
1.114 schwarze 396: mandoc_vmsg(c == 0x00 || c == 0x04 ||
397: c > 0x0a ? MANDOCERR_CHAR_BAD :
398: MANDOCERR_CHAR_UNSUPP,
399: curp, curp->line, pos, "0x%x", c);
1.1 kristaps 400: i++;
1.127 schwarze 401: if (c != '\r')
402: ln.buf[pos++] = '?';
1.1 kristaps 403: continue;
404: }
405:
406: /* Trailing backslash = a plain char. */
407:
1.95 schwarze 408: if (blk.buf[i] != '\\' || i + 1 == blk.sz) {
1.1 kristaps 409: ln.buf[pos++] = blk.buf[i++];
410: continue;
411: }
412:
413: /*
414: * Found escape and at least one other character.
415: * When it's a newline character, skip it.
416: * When there is a carriage return in between,
417: * skip that one as well.
418: */
419:
1.95 schwarze 420: if ('\r' == blk.buf[i + 1] && i + 2 < blk.sz &&
1.1 kristaps 421: '\n' == blk.buf[i + 2])
422: ++i;
423: if ('\n' == blk.buf[i + 1]) {
424: i += 2;
425: ++lnn;
426: continue;
427: }
428:
1.13 kristaps 429: if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
1.1 kristaps 430: i += 2;
431: /* Comment, skip to end of line */
1.95 schwarze 432: for (; i < blk.sz; ++i) {
1.1 kristaps 433: if ('\n' == blk.buf[i]) {
434: ++i;
435: ++lnn;
436: break;
437: }
438: }
439:
440: /* Backout trailing whitespaces */
441: for (; pos > 0; --pos) {
442: if (ln.buf[pos - 1] != ' ')
443: break;
444: if (pos > 2 && ln.buf[pos - 2] == '\\')
445: break;
446: }
447: break;
448: }
449:
1.35 schwarze 450: /* Catch escaped bogus characters. */
451:
452: c = (unsigned char) blk.buf[i+1];
453:
1.47 schwarze 454: if ( ! (isascii(c) &&
455: (isgraph(c) || isblank(c)))) {
1.114 schwarze 456: mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,
1.78 schwarze 457: curp->line, pos, "0x%x", c);
1.35 schwarze 458: i += 2;
459: ln.buf[pos++] = '?';
460: continue;
461: }
462:
1.1 kristaps 463: /* Some other escape sequence, copy & cont. */
464:
465: ln.buf[pos++] = blk.buf[i++];
466: ln.buf[pos++] = blk.buf[i++];
467: }
468:
1.95 schwarze 469: if (pos >= ln.sz)
1.1 kristaps 470: resize_buf(&ln, 256);
471:
472: ln.buf[pos] = '\0';
473:
474: /*
475: * A significant amount of complexity is contained by
476: * the roff preprocessor. It's line-oriented but can be
477: * expressed on one line, so we need at times to
478: * readjust our starting point and re-run it. The roff
479: * preprocessor can also readjust the buffers with new
480: * data, so we pass them in wholesale.
481: */
482:
483: of = 0;
484:
1.24 kristaps 485: /*
486: * Maintain a lookaside buffer of all parsed lines. We
487: * only do this if mparse_keep() has been invoked (the
488: * buffer may be accessed with mparse_getkeep()).
489: */
490:
491: if (curp->secondary) {
1.47 schwarze 492: curp->secondary->buf = mandoc_realloc(
493: curp->secondary->buf,
494: curp->secondary->sz + pos + 2);
495: memcpy(curp->secondary->buf +
496: curp->secondary->sz,
497: ln.buf, pos);
1.24 kristaps 498: curp->secondary->sz += pos;
499: curp->secondary->buf
500: [curp->secondary->sz] = '\n';
501: curp->secondary->sz++;
502: curp->secondary->buf
503: [curp->secondary->sz] = '\0';
504: }
1.1 kristaps 505: rerun:
1.96 schwarze 506: rr = roff_parseln(curp->roff, curp->line, &ln, &of);
1.1 kristaps 507:
508: switch (rr) {
1.47 schwarze 509: case ROFF_REPARSE:
1.1 kristaps 510: if (REPARSE_LIMIT >= ++curp->reparse_count)
1.95 schwarze 511: mparse_buf_r(curp, ln, of, 0);
1.1 kristaps 512: else
1.3 kristaps 513: mandoc_msg(MANDOCERR_ROFFLOOP, curp,
1.47 schwarze 514: curp->line, pos, NULL);
1.1 kristaps 515: pos = 0;
516: continue;
1.47 schwarze 517: case ROFF_APPEND:
1.95 schwarze 518: pos = strlen(ln.buf);
1.1 kristaps 519: continue;
1.47 schwarze 520: case ROFF_RERUN:
1.1 kristaps 521: goto rerun;
1.47 schwarze 522: case ROFF_IGN:
1.1 kristaps 523: pos = 0;
524: continue;
1.47 schwarze 525: case ROFF_SO:
1.95 schwarze 526: if ( ! (curp->options & MPARSE_SO) &&
527: (i >= blk.sz || blk.buf[i] == '\0')) {
1.45 schwarze 528: curp->sodest = mandoc_strdup(ln.buf + of);
529: free(ln.buf);
530: return;
531: }
1.24 kristaps 532: /*
533: * We remove `so' clauses from our lookaside
534: * buffer because we're going to descend into
535: * the file recursively.
536: */
1.47 schwarze 537: if (curp->secondary)
1.25 kristaps 538: curp->secondary->sz -= pos + 1;
1.113 schwarze 539: save_file = curp->file;
1.110 schwarze 540: if (mparse_open(curp, &fd, ln.buf + of) ==
1.113 schwarze 541: MANDOCLEVEL_OK) {
1.110 schwarze 542: mparse_readfd(curp, fd, ln.buf + of);
1.113 schwarze 543: curp->file = save_file;
544: } else {
545: curp->file = save_file;
1.52 schwarze 546: mandoc_vmsg(MANDOCERR_SO_FAIL,
547: curp, curp->line, pos,
548: ".so %s", ln.buf + of);
1.110 schwarze 549: ln.sz = mandoc_asprintf(&cp,
550: ".sp\nSee the file %s.\n.sp",
551: ln.buf + of);
552: free(ln.buf);
553: ln.buf = cp;
554: of = 0;
555: mparse_buf_r(curp, ln, of, 0);
1.52 schwarze 556: }
1.1 kristaps 557: pos = 0;
558: continue;
559: default:
560: break;
561: }
562:
563: /*
564: * If input parsers have not been allocated, do so now.
1.14 kristaps 565: * We keep these instanced between parsers, but set them
1.1 kristaps 566: * locally per parse routine since we can use different
567: * parsers with each one.
568: */
569:
1.135 schwarze 570: if (curp->man == NULL ||
571: curp->man->macroset == MACROSET_NONE)
1.84 schwarze 572: choose_parser(curp);
1.1 kristaps 573:
1.47 schwarze 574: /*
1.84 schwarze 575: * Lastly, push down into the parsers themselves.
1.1 kristaps 576: * If libroff returns ROFF_TBL, then add it to the
577: * currently open parse. Since we only get here if
578: * there does exist data (see tbl_data.c), we're
579: * guaranteed that something's been allocated.
580: * Do the same for ROFF_EQN.
581: */
582:
1.139 schwarze 583: if (rr == ROFF_TBL)
1.100 schwarze 584: while ((span = roff_span(curp->roff)) != NULL)
1.139 schwarze 585: roff_addtbl(curp->man, span);
586: else if (rr == ROFF_EQN)
587: roff_addeqn(curp->man, roff_eqn(curp->roff));
588: else if ((curp->man->macroset == MACROSET_MDOC ?
1.135 schwarze 589: mdoc_parseln(curp->man, curp->line, ln.buf, of) :
1.100 schwarze 590: man_parseln(curp->man, curp->line, ln.buf, of)) == 2)
591: break;
1.1 kristaps 592:
593: /* Temporary buffers typically are not full. */
594:
595: if (0 == start && '\0' == blk.buf[i])
596: break;
597:
598: /* Start the next input line. */
599:
600: pos = 0;
601: }
602:
603: free(ln.buf);
604: }
605:
606: static int
1.40 schwarze 607: read_whole_file(struct mparse *curp, const char *file, int fd,
608: struct buf *fb, int *with_mmap)
1.1 kristaps 609: {
1.140 ! schwarze 610: gzFile gz;
1.1 kristaps 611: size_t off;
612: ssize_t ssz;
613:
1.81 schwarze 614: #if HAVE_MMAP
1.15 kristaps 615: struct stat st;
1.1 kristaps 616: if (-1 == fstat(fd, &st)) {
1.107 schwarze 617: perror(file);
618: exit((int)MANDOCLEVEL_SYSERR);
1.1 kristaps 619: }
620:
621: /*
622: * If we're a regular file, try just reading in the whole entry
623: * via mmap(). This is faster than reading it into blocks, and
624: * since each file is only a few bytes to begin with, I'm not
625: * concerned that this is going to tank any machines.
626: */
627:
1.140 ! schwarze 628: if (curp->gzip == 0 && S_ISREG(st.st_mode)) {
1.131 schwarze 629: if (st.st_size > 0x7fffffff) {
1.111 schwarze 630: mandoc_msg(MANDOCERR_TOOLARGE, curp, 0, 0, NULL);
1.1 kristaps 631: return(0);
632: }
633: *with_mmap = 1;
634: fb->sz = (size_t)st.st_size;
1.37 schwarze 635: fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0);
1.1 kristaps 636: if (fb->buf != MAP_FAILED)
637: return(1);
638: }
1.15 kristaps 639: #endif
1.1 kristaps 640:
1.140 ! schwarze 641: if (curp->gzip) {
! 642: if ((gz = gzdopen(fd, "rb")) == NULL) {
! 643: perror(file);
! 644: exit((int)MANDOCLEVEL_SYSERR);
! 645: }
! 646: } else
! 647: gz = NULL;
! 648:
1.1 kristaps 649: /*
650: * If this isn't a regular file (like, say, stdin), then we must
651: * go the old way and just read things in bit by bit.
652: */
653:
654: *with_mmap = 0;
655: off = 0;
656: fb->sz = 0;
657: fb->buf = NULL;
658: for (;;) {
659: if (off == fb->sz) {
660: if (fb->sz == (1U << 31)) {
1.111 schwarze 661: mandoc_msg(MANDOCERR_TOOLARGE, curp,
662: 0, 0, NULL);
1.1 kristaps 663: break;
664: }
665: resize_buf(fb, 65536);
666: }
1.140 ! schwarze 667: ssz = curp->gzip ?
! 668: gzread(gz, fb->buf + (int)off, fb->sz - off) :
! 669: read(fd, fb->buf + (int)off, fb->sz - off);
1.1 kristaps 670: if (ssz == 0) {
671: fb->sz = off;
672: return(1);
673: }
674: if (ssz == -1) {
1.107 schwarze 675: perror(file);
676: exit((int)MANDOCLEVEL_SYSERR);
1.1 kristaps 677: }
678: off += (size_t)ssz;
679: }
680:
681: free(fb->buf);
682: fb->buf = NULL;
683: return(0);
684: }
685:
686: static void
687: mparse_end(struct mparse *curp)
688: {
689:
1.135 schwarze 690: if (curp->man == NULL && curp->sodest == NULL)
1.137 schwarze 691: curp->man = roff_man_alloc(curp->roff, curp, curp->defos,
1.135 schwarze 692: curp->options & MPARSE_QUICK ? 1 : 0);
693: if (curp->man->macroset == MACROSET_NONE)
694: curp->man->macroset = MACROSET_MAN;
695: if (curp->man->macroset == MACROSET_MDOC)
696: mdoc_endparse(curp->man);
697: else
1.111 schwarze 698: man_endparse(curp->man);
1.1 kristaps 699: roff_endparse(curp->roff);
700: }
701:
702: static void
1.36 schwarze 703: mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)
1.28 joerg 704: {
1.85 schwarze 705: struct buf *svprimary;
1.28 joerg 706: const char *svfile;
1.95 schwarze 707: size_t offset;
1.36 schwarze 708: static int recursion_depth;
709:
710: if (64 < recursion_depth) {
711: mandoc_msg(MANDOCERR_ROFFLOOP, curp, curp->line, 0, NULL);
712: return;
713: }
1.28 joerg 714:
715: /* Line number is per-file. */
716: svfile = curp->file;
717: curp->file = file;
1.85 schwarze 718: svprimary = curp->primary;
1.83 schwarze 719: curp->primary = &blk;
1.28 joerg 720: curp->line = 1;
1.36 schwarze 721: recursion_depth++;
1.28 joerg 722:
1.93 schwarze 723: /* Skip an UTF-8 byte order mark. */
724: if (curp->filenc & MPARSE_UTF8 && blk.sz > 2 &&
725: (unsigned char)blk.buf[0] == 0xef &&
726: (unsigned char)blk.buf[1] == 0xbb &&
727: (unsigned char)blk.buf[2] == 0xbf) {
1.95 schwarze 728: offset = 3;
1.93 schwarze 729: curp->filenc &= ~MPARSE_LATIN1;
1.95 schwarze 730: } else
731: offset = 0;
1.93 schwarze 732:
1.95 schwarze 733: mparse_buf_r(curp, blk, offset, 1);
1.28 joerg 734:
1.111 schwarze 735: if (--recursion_depth == 0)
1.28 joerg 736: mparse_end(curp);
737:
1.85 schwarze 738: curp->primary = svprimary;
1.28 joerg 739: curp->file = svfile;
740: }
741:
742: enum mandoclevel
1.104 schwarze 743: mparse_readmem(struct mparse *curp, void *buf, size_t len,
1.28 joerg 744: const char *file)
745: {
746: struct buf blk;
747:
1.104 schwarze 748: blk.buf = buf;
1.28 joerg 749: blk.sz = len;
750:
1.36 schwarze 751: mparse_parse_buffer(curp, blk, file);
1.28 joerg 752: return(curp->file_status);
753: }
754:
1.98 schwarze 755: /*
756: * Read the whole file into memory and call the parsers.
757: * Called recursively when an .so request is encountered.
758: */
1.36 schwarze 759: enum mandoclevel
760: mparse_readfd(struct mparse *curp, int fd, const char *file)
1.1 kristaps 761: {
1.28 joerg 762: struct buf blk;
763: int with_mmap;
1.93 schwarze 764: int save_filenc;
1.1 kristaps 765:
1.91 schwarze 766: if (read_whole_file(curp, file, fd, &blk, &with_mmap)) {
1.93 schwarze 767: save_filenc = curp->filenc;
768: curp->filenc = curp->options &
769: (MPARSE_UTF8 | MPARSE_LATIN1);
1.91 schwarze 770: mparse_parse_buffer(curp, blk, file);
1.93 schwarze 771: curp->filenc = save_filenc;
1.81 schwarze 772: #if HAVE_MMAP
1.91 schwarze 773: if (with_mmap)
774: munmap(blk.buf, blk.sz);
775: else
1.28 joerg 776: #endif
1.91 schwarze 777: free(blk.buf);
778: }
1.1 kristaps 779:
1.98 schwarze 780: if (fd != STDIN_FILENO && close(fd) == -1)
1.1 kristaps 781: perror(file);
1.91 schwarze 782:
1.1 kristaps 783: return(curp->file_status);
1.82 schwarze 784: }
785:
786: enum mandoclevel
1.97 schwarze 787: mparse_open(struct mparse *curp, int *fd, const char *file)
1.82 schwarze 788: {
789: char *cp;
790:
791: curp->file = file;
1.140 ! schwarze 792: cp = strrchr(file, '.');
! 793: curp->gzip = (cp != NULL && ! strcmp(cp + 1, "gz"));
1.98 schwarze 794:
1.140 ! schwarze 795: /* First try to use the filename as it is. */
1.98 schwarze 796:
1.140 ! schwarze 797: if ((*fd = open(file, O_RDONLY)) != -1)
! 798: return(MANDOCLEVEL_OK);
1.98 schwarze 799:
1.140 ! schwarze 800: /*
! 801: * If that doesn't work and the filename doesn't
! 802: * already end in .gz, try appending .gz.
! 803: */
1.98 schwarze 804:
1.140 ! schwarze 805: if ( ! curp->gzip) {
1.98 schwarze 806: mandoc_asprintf(&cp, "%s.gz", file);
1.140 ! schwarze 807: *fd = open(file, O_RDONLY);
1.108 schwarze 808: free(cp);
1.140 ! schwarze 809: if (*fd != -1) {
! 810: curp->gzip = 1;
! 811: return(MANDOCLEVEL_OK);
1.82 schwarze 812: }
813: }
814:
1.140 ! schwarze 815: /* Neither worked, give up. */
1.97 schwarze 816:
1.140 ! schwarze 817: mandoc_msg(MANDOCERR_FILE, curp, 0, 0, strerror(errno));
! 818: return(MANDOCLEVEL_ERROR);
1.1 kristaps 819: }
820:
821: struct mparse *
1.94 schwarze 822: mparse_alloc(int options, enum mandoclevel wlevel, mandocmsg mmsg,
823: const struct mchars *mchars, const char *defos)
1.1 kristaps 824: {
825: struct mparse *curp;
1.10 kristaps 826:
1.1 kristaps 827: curp = mandoc_calloc(1, sizeof(struct mparse));
828:
1.44 schwarze 829: curp->options = options;
1.3 kristaps 830: curp->wlevel = wlevel;
1.1 kristaps 831: curp->mmsg = mmsg;
1.29 schwarze 832: curp->defos = defos;
1.1 kristaps 833:
1.94 schwarze 834: curp->mchars = mchars;
835: curp->roff = roff_alloc(curp, curp->mchars, options);
1.137 schwarze 836: curp->man = roff_man_alloc( curp->roff, curp, curp->defos,
837: curp->options & MPARSE_QUICK ? 1 : 0);
1.136 schwarze 838: if (curp->options & MPARSE_MDOC) {
839: mdoc_hash_init();
1.137 schwarze 840: curp->man->macroset = MACROSET_MDOC;
841: } else if (curp->options & MPARSE_MAN) {
1.136 schwarze 842: man_hash_init();
1.137 schwarze 843: curp->man->macroset = MACROSET_MAN;
1.136 schwarze 844: }
1.138 schwarze 845: curp->man->first->tok = TOKEN_NONE;
1.1 kristaps 846: return(curp);
847: }
848:
849: void
850: mparse_reset(struct mparse *curp)
851: {
852:
853: roff_reset(curp->roff);
854:
1.137 schwarze 855: if (curp->man != NULL)
856: roff_man_reset(curp->man);
1.24 kristaps 857: if (curp->secondary)
858: curp->secondary->sz = 0;
1.1 kristaps 859:
860: curp->file_status = MANDOCLEVEL_OK;
1.45 schwarze 861:
862: free(curp->sodest);
863: curp->sodest = NULL;
1.1 kristaps 864: }
865:
866: void
867: mparse_free(struct mparse *curp)
868: {
869:
1.137 schwarze 870: roff_man_free(curp->man);
1.1 kristaps 871: if (curp->roff)
872: roff_free(curp->roff);
1.24 kristaps 873: if (curp->secondary)
874: free(curp->secondary->buf);
1.1 kristaps 875:
1.24 kristaps 876: free(curp->secondary);
1.45 schwarze 877: free(curp->sodest);
1.1 kristaps 878: free(curp);
879: }
880:
881: void
1.135 schwarze 882: mparse_result(struct mparse *curp, struct roff_man **man,
883: char **sodest)
1.1 kristaps 884: {
885:
1.45 schwarze 886: if (sodest && NULL != (*sodest = curp->sodest)) {
887: *man = NULL;
888: return;
889: }
1.9 kristaps 890: if (man)
891: *man = curp->man;
1.3 kristaps 892: }
893:
894: void
895: mandoc_vmsg(enum mandocerr t, struct mparse *m,
896: int ln, int pos, const char *fmt, ...)
897: {
898: char buf[256];
899: va_list ap;
900:
901: va_start(ap, fmt);
1.48 schwarze 902: (void)vsnprintf(buf, sizeof(buf), fmt, ap);
1.3 kristaps 903: va_end(ap);
904:
905: mandoc_msg(t, m, ln, pos, buf);
906: }
907:
908: void
1.47 schwarze 909: mandoc_msg(enum mandocerr er, struct mparse *m,
1.3 kristaps 910: int ln, int col, const char *msg)
911: {
912: enum mandoclevel level;
913:
1.112 schwarze 914: level = MANDOCLEVEL_UNSUPP;
1.3 kristaps 915: while (er < mandoclimits[level])
916: level--;
917:
1.108 schwarze 918: if (level < m->wlevel && er != MANDOCERR_FILE)
1.3 kristaps 919: return;
920:
1.8 kristaps 921: if (m->mmsg)
922: (*m->mmsg)(er, level, m->file, ln, col, msg);
1.3 kristaps 923:
924: if (m->file_status < level)
925: m->file_status = level;
1.7 kristaps 926: }
927:
928: const char *
929: mparse_strerror(enum mandocerr er)
930: {
931:
932: return(mandocerrs[er]);
933: }
934:
935: const char *
936: mparse_strlevel(enum mandoclevel lvl)
937: {
938: return(mandoclevels[lvl]);
1.24 kristaps 939: }
940:
941: void
942: mparse_keep(struct mparse *p)
943: {
944:
945: assert(NULL == p->secondary);
946: p->secondary = mandoc_calloc(1, sizeof(struct buf));
947: }
948:
949: const char *
950: mparse_getkeep(const struct mparse *p)
951: {
952:
953: assert(p->secondary);
954: return(p->secondary->sz ? p->secondary->buf : NULL);
1.1 kristaps 955: }
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