1 /* $Id: read.c,v 1.28 2012/02/16 20:51:31 joerg Exp $ */ 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 #ifdef HAVE_CONFIG_H 19 #include "config.h" 20 #endif 21 22 #ifdef HAVE_MMAP 23 # include <sys/stat.h> 24 # include <sys/mman.h> 25 #endif 26 27 #include <assert.h> 28 #include <ctype.h> 29 #include <fcntl.h> 30 #include <stdarg.h> 31 #include <stdint.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <unistd.h> 36 37 #include "mandoc.h" 38 #include "libmandoc.h" 39 #include "mdoc.h" 40 #include "man.h" 41 #include "main.h" 42 43 #ifndef MAP_FILE 44 #define MAP_FILE 0 45 #endif 46 47 #define REPARSE_LIMIT 1000 48 49 struct buf { 50 char *buf; /* binary input buffer */ 51 size_t sz; /* size of binary buffer */ 52 }; 53 54 struct mparse { 55 enum mandoclevel file_status; /* status of current parse */ 56 enum mandoclevel wlevel; /* ignore messages below this */ 57 int line; /* line number in the file */ 58 enum mparset inttype; /* which parser to use */ 59 struct man *pman; /* persistent man parser */ 60 struct mdoc *pmdoc; /* persistent mdoc parser */ 61 struct man *man; /* man parser */ 62 struct mdoc *mdoc; /* mdoc parser */ 63 struct roff *roff; /* roff parser (!NULL) */ 64 int reparse_count; /* finite interp. stack */ 65 mandocmsg mmsg; /* warning/error message handler */ 66 void *arg; /* argument to mmsg */ 67 const char *file; 68 struct buf *secondary; 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 mparse_readfd_r(struct mparse *, int, const char *, int); 74 static void pset(const char *, int, struct mparse *); 75 static int read_whole_file(const char *, int, struct buf *, int *); 76 static void mparse_end(struct mparse *); 77 78 static const enum mandocerr mandoclimits[MANDOCLEVEL_MAX] = { 79 MANDOCERR_OK, 80 MANDOCERR_WARNING, 81 MANDOCERR_WARNING, 82 MANDOCERR_ERROR, 83 MANDOCERR_FATAL, 84 MANDOCERR_MAX, 85 MANDOCERR_MAX 86 }; 87 88 static const char * const mandocerrs[MANDOCERR_MAX] = { 89 "ok", 90 91 "generic warning", 92 93 /* related to the prologue */ 94 "no title in document", 95 "document title should be all caps", 96 "unknown manual section", 97 "date missing, using today's date", 98 "cannot parse date, using it verbatim", 99 "prologue macros out of order", 100 "duplicate prologue macro", 101 "macro not allowed in prologue", 102 "macro not allowed in body", 103 104 /* related to document structure */ 105 ".so is fragile, better use ln(1)", 106 "NAME section must come first", 107 "bad NAME section contents", 108 "manual name not yet set", 109 "sections out of conventional order", 110 "duplicate section name", 111 "section not in conventional manual section", 112 113 /* related to macros and nesting */ 114 "skipping obsolete macro", 115 "skipping paragraph macro", 116 "skipping no-space macro", 117 "blocks badly nested", 118 "child violates parent syntax", 119 "nested displays are not portable", 120 "already in literal mode", 121 "line scope broken", 122 123 /* related to missing macro arguments */ 124 "skipping empty macro", 125 "argument count wrong", 126 "missing display type", 127 "list type must come first", 128 "tag lists require a width argument", 129 "missing font type", 130 "skipping end of block that is not open", 131 132 /* related to bad macro arguments */ 133 "skipping argument", 134 "duplicate argument", 135 "duplicate display type", 136 "duplicate list type", 137 "unknown AT&T UNIX version", 138 "bad Boolean value", 139 "unknown font", 140 "unknown standard specifier", 141 "bad width argument", 142 143 /* related to plain text */ 144 "blank line in non-literal context", 145 "tab in non-literal context", 146 "end of line whitespace", 147 "bad comment style", 148 "bad escape sequence", 149 "unterminated quoted string", 150 151 /* related to equations */ 152 "unexpected literal in equation", 153 154 "generic error", 155 156 /* related to equations */ 157 "unexpected equation scope closure", 158 "equation scope open on exit", 159 "overlapping equation scopes", 160 "unexpected end of equation", 161 "equation syntax error", 162 163 /* related to tables */ 164 "bad table syntax", 165 "bad table option", 166 "bad table layout", 167 "no table layout cells specified", 168 "no table data cells specified", 169 "ignore data in cell", 170 "data block still open", 171 "ignoring extra data cells", 172 173 "input stack limit exceeded, infinite loop?", 174 "skipping bad character", 175 "escaped character not allowed in a name", 176 "skipping text before the first section header", 177 "skipping unknown macro", 178 "NOT IMPLEMENTED, please use groff: skipping request", 179 "argument count wrong", 180 "skipping end of block that is not open", 181 "missing end of block", 182 "scope open on exit", 183 "uname(3) system call failed", 184 "macro requires line argument(s)", 185 "macro requires body argument(s)", 186 "macro requires argument(s)", 187 "missing list type", 188 "line argument(s) will be lost", 189 "body argument(s) will be lost", 190 191 "generic fatal error", 192 193 "not a manual", 194 "column syntax is inconsistent", 195 "NOT IMPLEMENTED: .Bd -file", 196 "argument count wrong, violates syntax", 197 "child violates parent syntax", 198 "argument count wrong, violates syntax", 199 "NOT IMPLEMENTED: .so with absolute path or \"..\"", 200 "no document body", 201 "no document prologue", 202 "static buffer exhausted", 203 }; 204 205 static const char * const mandoclevels[MANDOCLEVEL_MAX] = { 206 "SUCCESS", 207 "RESERVED", 208 "WARNING", 209 "ERROR", 210 "FATAL", 211 "BADARG", 212 "SYSERR" 213 }; 214 215 static void 216 resize_buf(struct buf *buf, size_t initial) 217 { 218 219 buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial; 220 buf->buf = mandoc_realloc(buf->buf, buf->sz); 221 } 222 223 static void 224 pset(const char *buf, int pos, struct mparse *curp) 225 { 226 int i; 227 228 /* 229 * Try to intuit which kind of manual parser should be used. If 230 * passed in by command-line (-man, -mdoc), then use that 231 * explicitly. If passed as -mandoc, then try to guess from the 232 * line: either skip dot-lines, use -mdoc when finding `.Dt', or 233 * default to -man, which is more lenient. 234 * 235 * Separate out pmdoc/pman from mdoc/man: the first persists 236 * through all parsers, while the latter is used per-parse. 237 */ 238 239 if ('.' == buf[0] || '\'' == buf[0]) { 240 for (i = 1; buf[i]; i++) 241 if (' ' != buf[i] && '\t' != buf[i]) 242 break; 243 if ('\0' == buf[i]) 244 return; 245 } 246 247 switch (curp->inttype) { 248 case (MPARSE_MDOC): 249 if (NULL == curp->pmdoc) 250 curp->pmdoc = mdoc_alloc(curp->roff, curp); 251 assert(curp->pmdoc); 252 curp->mdoc = curp->pmdoc; 253 return; 254 case (MPARSE_MAN): 255 if (NULL == curp->pman) 256 curp->pman = man_alloc(curp->roff, curp); 257 assert(curp->pman); 258 curp->man = curp->pman; 259 return; 260 default: 261 break; 262 } 263 264 if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) { 265 if (NULL == curp->pmdoc) 266 curp->pmdoc = mdoc_alloc(curp->roff, curp); 267 assert(curp->pmdoc); 268 curp->mdoc = curp->pmdoc; 269 return; 270 } 271 272 if (NULL == curp->pman) 273 curp->pman = man_alloc(curp->roff, curp); 274 assert(curp->pman); 275 curp->man = curp->pman; 276 } 277 278 /* 279 * Main parse routine for an opened file. This is called for each 280 * opened file and simply loops around the full input file, possibly 281 * nesting (i.e., with `so'). 282 */ 283 static void 284 mparse_buf_r(struct mparse *curp, struct buf blk, int start) 285 { 286 const struct tbl_span *span; 287 struct buf ln; 288 enum rofferr rr; 289 int i, of, rc; 290 int pos; /* byte number in the ln buffer */ 291 int lnn; /* line number in the real file */ 292 unsigned char c; 293 294 memset(&ln, 0, sizeof(struct buf)); 295 296 lnn = curp->line; 297 pos = 0; 298 299 for (i = 0; i < (int)blk.sz; ) { 300 if (0 == pos && '\0' == blk.buf[i]) 301 break; 302 303 if (start) { 304 curp->line = lnn; 305 curp->reparse_count = 0; 306 } 307 308 while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) { 309 310 /* 311 * When finding an unescaped newline character, 312 * leave the character loop to process the line. 313 * Skip a preceding carriage return, if any. 314 */ 315 316 if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz && 317 '\n' == blk.buf[i + 1]) 318 ++i; 319 if ('\n' == blk.buf[i]) { 320 ++i; 321 ++lnn; 322 break; 323 } 324 325 /* 326 * Warn about bogus characters. If you're using 327 * non-ASCII encoding, you're screwing your 328 * readers. Since I'd rather this not happen, 329 * I'll be helpful and replace these characters 330 * with "?", so we don't display gibberish. 331 * Note to manual writers: use special characters. 332 */ 333 334 c = (unsigned char) blk.buf[i]; 335 336 if ( ! (isascii(c) && 337 (isgraph(c) || isblank(c)))) { 338 mandoc_msg(MANDOCERR_BADCHAR, curp, 339 curp->line, pos, NULL); 340 i++; 341 if (pos >= (int)ln.sz) 342 resize_buf(&ln, 256); 343 ln.buf[pos++] = '?'; 344 continue; 345 } 346 347 /* Trailing backslash = a plain char. */ 348 349 if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) { 350 if (pos >= (int)ln.sz) 351 resize_buf(&ln, 256); 352 ln.buf[pos++] = blk.buf[i++]; 353 continue; 354 } 355 356 /* 357 * Found escape and at least one other character. 358 * When it's a newline character, skip it. 359 * When there is a carriage return in between, 360 * skip that one as well. 361 */ 362 363 if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz && 364 '\n' == blk.buf[i + 2]) 365 ++i; 366 if ('\n' == blk.buf[i + 1]) { 367 i += 2; 368 ++lnn; 369 continue; 370 } 371 372 if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) { 373 i += 2; 374 /* Comment, skip to end of line */ 375 for (; i < (int)blk.sz; ++i) { 376 if ('\n' == blk.buf[i]) { 377 ++i; 378 ++lnn; 379 break; 380 } 381 } 382 383 /* Backout trailing whitespaces */ 384 for (; pos > 0; --pos) { 385 if (ln.buf[pos - 1] != ' ') 386 break; 387 if (pos > 2 && ln.buf[pos - 2] == '\\') 388 break; 389 } 390 break; 391 } 392 393 /* Some other escape sequence, copy & cont. */ 394 395 if (pos + 1 >= (int)ln.sz) 396 resize_buf(&ln, 256); 397 398 ln.buf[pos++] = blk.buf[i++]; 399 ln.buf[pos++] = blk.buf[i++]; 400 } 401 402 if (pos >= (int)ln.sz) 403 resize_buf(&ln, 256); 404 405 ln.buf[pos] = '\0'; 406 407 /* 408 * A significant amount of complexity is contained by 409 * the roff preprocessor. It's line-oriented but can be 410 * expressed on one line, so we need at times to 411 * readjust our starting point and re-run it. The roff 412 * preprocessor can also readjust the buffers with new 413 * data, so we pass them in wholesale. 414 */ 415 416 of = 0; 417 418 /* 419 * Maintain a lookaside buffer of all parsed lines. We 420 * only do this if mparse_keep() has been invoked (the 421 * buffer may be accessed with mparse_getkeep()). 422 */ 423 424 if (curp->secondary) { 425 curp->secondary->buf = 426 mandoc_realloc 427 (curp->secondary->buf, 428 curp->secondary->sz + pos + 2); 429 memcpy(curp->secondary->buf + 430 curp->secondary->sz, 431 ln.buf, pos); 432 curp->secondary->sz += pos; 433 curp->secondary->buf 434 [curp->secondary->sz] = '\n'; 435 curp->secondary->sz++; 436 curp->secondary->buf 437 [curp->secondary->sz] = '\0'; 438 } 439 rerun: 440 rr = roff_parseln 441 (curp->roff, curp->line, 442 &ln.buf, &ln.sz, of, &of); 443 444 switch (rr) { 445 case (ROFF_REPARSE): 446 if (REPARSE_LIMIT >= ++curp->reparse_count) 447 mparse_buf_r(curp, ln, 0); 448 else 449 mandoc_msg(MANDOCERR_ROFFLOOP, curp, 450 curp->line, pos, NULL); 451 pos = 0; 452 continue; 453 case (ROFF_APPEND): 454 pos = (int)strlen(ln.buf); 455 continue; 456 case (ROFF_RERUN): 457 goto rerun; 458 case (ROFF_IGN): 459 pos = 0; 460 continue; 461 case (ROFF_ERR): 462 assert(MANDOCLEVEL_FATAL <= curp->file_status); 463 break; 464 case (ROFF_SO): 465 /* 466 * We remove `so' clauses from our lookaside 467 * buffer because we're going to descend into 468 * the file recursively. 469 */ 470 if (curp->secondary) 471 curp->secondary->sz -= pos + 1; 472 mparse_readfd_r(curp, -1, ln.buf + of, 1); 473 if (MANDOCLEVEL_FATAL <= curp->file_status) 474 break; 475 pos = 0; 476 continue; 477 default: 478 break; 479 } 480 481 /* 482 * If we encounter errors in the recursive parse, make 483 * sure we don't continue parsing. 484 */ 485 486 if (MANDOCLEVEL_FATAL <= curp->file_status) 487 break; 488 489 /* 490 * If input parsers have not been allocated, do so now. 491 * We keep these instanced between parsers, but set them 492 * locally per parse routine since we can use different 493 * parsers with each one. 494 */ 495 496 if ( ! (curp->man || curp->mdoc)) 497 pset(ln.buf + of, pos - of, curp); 498 499 /* 500 * Lastly, push down into the parsers themselves. One 501 * of these will have already been set in the pset() 502 * routine. 503 * If libroff returns ROFF_TBL, then add it to the 504 * currently open parse. Since we only get here if 505 * there does exist data (see tbl_data.c), we're 506 * guaranteed that something's been allocated. 507 * Do the same for ROFF_EQN. 508 */ 509 510 rc = -1; 511 512 if (ROFF_TBL == rr) 513 while (NULL != (span = roff_span(curp->roff))) { 514 rc = curp->man ? 515 man_addspan(curp->man, span) : 516 mdoc_addspan(curp->mdoc, span); 517 if (0 == rc) 518 break; 519 } 520 else if (ROFF_EQN == rr) 521 rc = curp->mdoc ? 522 mdoc_addeqn(curp->mdoc, 523 roff_eqn(curp->roff)) : 524 man_addeqn(curp->man, 525 roff_eqn(curp->roff)); 526 else if (curp->man || curp->mdoc) 527 rc = curp->man ? 528 man_parseln(curp->man, 529 curp->line, ln.buf, of) : 530 mdoc_parseln(curp->mdoc, 531 curp->line, ln.buf, of); 532 533 if (0 == rc) { 534 assert(MANDOCLEVEL_FATAL <= curp->file_status); 535 break; 536 } 537 538 /* Temporary buffers typically are not full. */ 539 540 if (0 == start && '\0' == blk.buf[i]) 541 break; 542 543 /* Start the next input line. */ 544 545 pos = 0; 546 } 547 548 free(ln.buf); 549 } 550 551 static int 552 read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap) 553 { 554 size_t off; 555 ssize_t ssz; 556 557 #ifdef HAVE_MMAP 558 struct stat st; 559 if (-1 == fstat(fd, &st)) { 560 perror(file); 561 return(0); 562 } 563 564 /* 565 * If we're a regular file, try just reading in the whole entry 566 * via mmap(). This is faster than reading it into blocks, and 567 * since each file is only a few bytes to begin with, I'm not 568 * concerned that this is going to tank any machines. 569 */ 570 571 if (S_ISREG(st.st_mode)) { 572 if (st.st_size >= (1U << 31)) { 573 fprintf(stderr, "%s: input too large\n", file); 574 return(0); 575 } 576 *with_mmap = 1; 577 fb->sz = (size_t)st.st_size; 578 fb->buf = mmap(NULL, fb->sz, PROT_READ, 579 MAP_FILE|MAP_SHARED, fd, 0); 580 if (fb->buf != MAP_FAILED) 581 return(1); 582 } 583 #endif 584 585 /* 586 * If this isn't a regular file (like, say, stdin), then we must 587 * go the old way and just read things in bit by bit. 588 */ 589 590 *with_mmap = 0; 591 off = 0; 592 fb->sz = 0; 593 fb->buf = NULL; 594 for (;;) { 595 if (off == fb->sz) { 596 if (fb->sz == (1U << 31)) { 597 fprintf(stderr, "%s: input too large\n", file); 598 break; 599 } 600 resize_buf(fb, 65536); 601 } 602 ssz = read(fd, fb->buf + (int)off, fb->sz - off); 603 if (ssz == 0) { 604 fb->sz = off; 605 return(1); 606 } 607 if (ssz == -1) { 608 perror(file); 609 break; 610 } 611 off += (size_t)ssz; 612 } 613 614 free(fb->buf); 615 fb->buf = NULL; 616 return(0); 617 } 618 619 static void 620 mparse_end(struct mparse *curp) 621 { 622 623 if (MANDOCLEVEL_FATAL <= curp->file_status) 624 return; 625 626 if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) { 627 assert(MANDOCLEVEL_FATAL <= curp->file_status); 628 return; 629 } 630 631 if (curp->man && ! man_endparse(curp->man)) { 632 assert(MANDOCLEVEL_FATAL <= curp->file_status); 633 return; 634 } 635 636 if ( ! (curp->man || curp->mdoc)) { 637 mandoc_msg(MANDOCERR_NOTMANUAL, curp, 1, 0, NULL); 638 curp->file_status = MANDOCLEVEL_FATAL; 639 return; 640 } 641 642 roff_endparse(curp->roff); 643 } 644 645 static void 646 mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file, 647 int re) 648 { 649 const char *svfile; 650 651 /* Line number is per-file. */ 652 svfile = curp->file; 653 curp->file = file; 654 curp->line = 1; 655 656 mparse_buf_r(curp, blk, 1); 657 658 if (0 == re && MANDOCLEVEL_FATAL > curp->file_status) 659 mparse_end(curp); 660 661 curp->file = svfile; 662 } 663 664 enum mandoclevel 665 mparse_readmem(struct mparse *curp, const void *buf, size_t len, 666 const char *file) 667 { 668 struct buf blk; 669 670 blk.buf = UNCONST(buf); 671 blk.sz = len; 672 673 mparse_parse_buffer(curp, blk, file, 0); 674 return(curp->file_status); 675 } 676 677 static void 678 mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re) 679 { 680 struct buf blk; 681 int with_mmap; 682 683 if (-1 == fd) 684 if (-1 == (fd = open(file, O_RDONLY, 0))) { 685 perror(file); 686 curp->file_status = MANDOCLEVEL_SYSERR; 687 return; 688 } 689 /* 690 * Run for each opened file; may be called more than once for 691 * each full parse sequence if the opened file is nested (i.e., 692 * from `so'). Simply sucks in the whole file and moves into 693 * the parse phase for the file. 694 */ 695 696 if ( ! read_whole_file(file, fd, &blk, &with_mmap)) { 697 curp->file_status = MANDOCLEVEL_SYSERR; 698 return; 699 } 700 701 mparse_parse_buffer(curp, blk, file, re); 702 703 #ifdef HAVE_MMAP 704 if (with_mmap) 705 munmap(blk.buf, blk.sz); 706 else 707 #endif 708 free(blk.buf); 709 710 if (STDIN_FILENO != fd && -1 == close(fd)) 711 perror(file); 712 } 713 714 enum mandoclevel 715 mparse_readfd(struct mparse *curp, int fd, const char *file) 716 { 717 718 mparse_readfd_r(curp, fd, file, 0); 719 return(curp->file_status); 720 } 721 722 struct mparse * 723 mparse_alloc(enum mparset inttype, enum mandoclevel wlevel, mandocmsg mmsg, void *arg) 724 { 725 struct mparse *curp; 726 727 assert(wlevel <= MANDOCLEVEL_FATAL); 728 729 curp = mandoc_calloc(1, sizeof(struct mparse)); 730 731 curp->wlevel = wlevel; 732 curp->mmsg = mmsg; 733 curp->arg = arg; 734 curp->inttype = inttype; 735 736 curp->roff = roff_alloc(curp); 737 return(curp); 738 } 739 740 void 741 mparse_reset(struct mparse *curp) 742 { 743 744 roff_reset(curp->roff); 745 746 if (curp->mdoc) 747 mdoc_reset(curp->mdoc); 748 if (curp->man) 749 man_reset(curp->man); 750 if (curp->secondary) 751 curp->secondary->sz = 0; 752 753 curp->file_status = MANDOCLEVEL_OK; 754 curp->mdoc = NULL; 755 curp->man = NULL; 756 } 757 758 void 759 mparse_free(struct mparse *curp) 760 { 761 762 if (curp->pmdoc) 763 mdoc_free(curp->pmdoc); 764 if (curp->pman) 765 man_free(curp->pman); 766 if (curp->roff) 767 roff_free(curp->roff); 768 if (curp->secondary) 769 free(curp->secondary->buf); 770 771 free(curp->secondary); 772 free(curp); 773 } 774 775 void 776 mparse_result(struct mparse *curp, struct mdoc **mdoc, struct man **man) 777 { 778 779 if (mdoc) 780 *mdoc = curp->mdoc; 781 if (man) 782 *man = curp->man; 783 } 784 785 void 786 mandoc_vmsg(enum mandocerr t, struct mparse *m, 787 int ln, int pos, const char *fmt, ...) 788 { 789 char buf[256]; 790 va_list ap; 791 792 va_start(ap, fmt); 793 vsnprintf(buf, sizeof(buf) - 1, fmt, ap); 794 va_end(ap); 795 796 mandoc_msg(t, m, ln, pos, buf); 797 } 798 799 void 800 mandoc_msg(enum mandocerr er, struct mparse *m, 801 int ln, int col, const char *msg) 802 { 803 enum mandoclevel level; 804 805 level = MANDOCLEVEL_FATAL; 806 while (er < mandoclimits[level]) 807 level--; 808 809 if (level < m->wlevel) 810 return; 811 812 if (m->mmsg) 813 (*m->mmsg)(er, level, m->file, ln, col, msg); 814 815 if (m->file_status < level) 816 m->file_status = level; 817 } 818 819 const char * 820 mparse_strerror(enum mandocerr er) 821 { 822 823 return(mandocerrs[er]); 824 } 825 826 const char * 827 mparse_strlevel(enum mandoclevel lvl) 828 { 829 return(mandoclevels[lvl]); 830 } 831 832 void 833 mparse_keep(struct mparse *p) 834 { 835 836 assert(NULL == p->secondary); 837 p->secondary = mandoc_calloc(1, sizeof(struct buf)); 838 } 839 840 const char * 841 mparse_getkeep(const struct mparse *p) 842 { 843 844 assert(p->secondary); 845 return(p->secondary->sz ? p->secondary->buf : NULL); 846 } 847