read.c

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