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   1 /*      $Id: mdoc_argv.c,v 1.82 2012/03/23 05:50:24 kristaps Exp $ */
   2 /*
   3  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>

   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17 #ifdef HAVE_CONFIG_H
  18 #include "config.h"
  19 #endif
  20 
  21 #include <sys/types.h>
  22 
  23 #include <assert.h>


  25 #include <stdio.h>
  26 #include <string.h>
  27 
  28 #include "mdoc.h"
  29 #include "mandoc.h"
  30 #include "libmdoc.h"
  31 #include "libmandoc.h"
  32 
  33 #define MULTI_STEP       5 /* pre-allocate argument values */
  34 #define DELIMSZ          6 /* max possible size of a delimiter */
  35 
  36 enum    argsflag {
  37         ARGSFL_NONE = 0,
  38         ARGSFL_DELIM, /* handle delimiters of [[::delim::][ ]+]+ */
  39         ARGSFL_TABSEP /* handle tab/`Ta' separated phrases */
  40 };
  41 
  42 enum    argvflag {
  43         ARGV_NONE, /* no args to flag (e.g., -split) */
  44         ARGV_SINGLE, /* one arg to flag (e.g., -file xxx)  */
  45         ARGV_MULTI, /* multiple args (e.g., -column xxx yyy) */
  46         ARGV_OPT_SINGLE /* optional arg (e.g., -offset [xxx]) */
  47 };
  48 
  49 struct  mdocarg {
  50         enum argsflag    flags;
  51         const enum mdocargt *argvs;
  52 };
  53 
  54 static  void             argn_free(struct mdoc_arg *, int);
  55 static  enum margserr    args(struct mdoc *, int, int *, 
  56                                 char *, enum argsflag, char **);
  57 static  int              args_checkpunct(const char *, int);
  58 static  int              argv_multi(struct mdoc *, int, 
  59                                 struct mdoc_argv *, int *, char *);
  60 static  int              argv_opt_single(struct mdoc *, int, 
  61                                 struct mdoc_argv *, int *, char *);
  62 static  int              argv_single(struct mdoc *, int, 
  63                                 struct mdoc_argv *, int *, char *);
  64 
  65 static  const enum argvflag argvflags[MDOC_ARG_MAX] = {
  66         ARGV_NONE,      /* MDOC_Split */
  67         ARGV_NONE,      /* MDOC_Nosplit */
  68         ARGV_NONE,      /* MDOC_Ragged */
  69         ARGV_NONE,      /* MDOC_Unfilled */
  70         ARGV_NONE,      /* MDOC_Literal */
  71         ARGV_SINGLE,    /* MDOC_File */
  72         ARGV_OPT_SINGLE, /* MDOC_Offset */
  73         ARGV_NONE,      /* MDOC_Bullet */
  74         ARGV_NONE,      /* MDOC_Dash */
  75         ARGV_NONE,      /* MDOC_Hyphen */
  76         ARGV_NONE,      /* MDOC_Item */
  77         ARGV_NONE,      /* MDOC_Enum */
  78         ARGV_NONE,      /* MDOC_Tag */
  79         ARGV_NONE,      /* MDOC_Diag */
  80         ARGV_NONE,      /* MDOC_Hang */
  81         ARGV_NONE,      /* MDOC_Ohang */
  82         ARGV_NONE,      /* MDOC_Inset */
  83         ARGV_MULTI,     /* MDOC_Column */
  84         ARGV_OPT_SINGLE, /* MDOC_Width */
  85         ARGV_NONE,      /* MDOC_Compact */
  86         ARGV_NONE,      /* MDOC_Std */
  87         ARGV_NONE,      /* MDOC_Filled */
  88         ARGV_NONE,      /* MDOC_Words */
  89         ARGV_NONE,      /* MDOC_Emphasis */
  90         ARGV_NONE,      /* MDOC_Symbolic */
  91         ARGV_NONE       /* MDOC_Symbolic */
  92 };
  93 
  94 static  const enum mdocargt args_Ex[] = {
  95         MDOC_Std,
  96         MDOC_ARG_MAX
  97 };
  98 
  99 static  const enum mdocargt args_An[] = {
 100         MDOC_Split,
 101         MDOC_Nosplit,
 102         MDOC_ARG_MAX
 103 };
 104 


 129 static  const enum mdocargt args_Bl[] = {
 130         MDOC_Bullet,
 131         MDOC_Dash,
 132         MDOC_Hyphen,
 133         MDOC_Item,
 134         MDOC_Enum,
 135         MDOC_Tag,
 136         MDOC_Diag,
 137         MDOC_Hang,
 138         MDOC_Ohang,
 139         MDOC_Inset,
 140         MDOC_Column,
 141         MDOC_Width,
 142         MDOC_Offset,
 143         MDOC_Compact,
 144         MDOC_Nested,
 145         MDOC_ARG_MAX
 146 };
 147 
 148 static  const struct mdocarg mdocargs[MDOC_MAX] = {
 149         { ARGSFL_NONE, NULL }, /* Ap */
 150         { ARGSFL_NONE, NULL }, /* Dd */
 151         { ARGSFL_NONE, NULL }, /* Dt */
 152         { ARGSFL_NONE, NULL }, /* Os */
 153         { ARGSFL_NONE, NULL }, /* Sh */
 154         { ARGSFL_NONE, NULL }, /* Ss */ 
 155         { ARGSFL_NONE, NULL }, /* Pp */ 
 156         { ARGSFL_DELIM, NULL }, /* D1 */
 157         { ARGSFL_DELIM, NULL }, /* Dl */
 158         { ARGSFL_NONE, args_Bd }, /* Bd */
 159         { ARGSFL_NONE, NULL }, /* Ed */
 160         { ARGSFL_NONE, args_Bl }, /* Bl */
 161         { ARGSFL_NONE, NULL }, /* El */
 162         { ARGSFL_NONE, NULL }, /* It */
 163         { ARGSFL_DELIM, NULL }, /* Ad */ 
 164         { ARGSFL_DELIM, args_An }, /* An */
 165         { ARGSFL_DELIM, NULL }, /* Ar */
 166         { ARGSFL_NONE, NULL }, /* Cd */
 167         { ARGSFL_DELIM, NULL }, /* Cm */
 168         { ARGSFL_DELIM, NULL }, /* Dv */ 
 169         { ARGSFL_DELIM, NULL }, /* Er */ 
 170         { ARGSFL_DELIM, NULL }, /* Ev */ 
 171         { ARGSFL_NONE, args_Ex }, /* Ex */
 172         { ARGSFL_DELIM, NULL }, /* Fa */ 
 173         { ARGSFL_NONE, NULL }, /* Fd */ 
 174         { ARGSFL_DELIM, NULL }, /* Fl */
 175         { ARGSFL_DELIM, NULL }, /* Fn */ 
 176         { ARGSFL_DELIM, NULL }, /* Ft */ 
 177         { ARGSFL_DELIM, NULL }, /* Ic */ 
 178         { ARGSFL_NONE, NULL }, /* In */ 
 179         { ARGSFL_DELIM, NULL }, /* Li */
 180         { ARGSFL_NONE, NULL }, /* Nd */ 
 181         { ARGSFL_DELIM, NULL }, /* Nm */ 
 182         { ARGSFL_DELIM, NULL }, /* Op */
 183         { ARGSFL_NONE, NULL }, /* Ot */
 184         { ARGSFL_DELIM, NULL }, /* Pa */
 185         { ARGSFL_NONE, args_Ex }, /* Rv */
 186         { ARGSFL_DELIM, NULL }, /* St */ 
 187         { ARGSFL_DELIM, NULL }, /* Va */
 188         { ARGSFL_DELIM, NULL }, /* Vt */ 
 189         { ARGSFL_DELIM, NULL }, /* Xr */
 190         { ARGSFL_NONE, NULL }, /* %A */
 191         { ARGSFL_NONE, NULL }, /* %B */
 192         { ARGSFL_NONE, NULL }, /* %D */
 193         { ARGSFL_NONE, NULL }, /* %I */
 194         { ARGSFL_NONE, NULL }, /* %J */
 195         { ARGSFL_NONE, NULL }, /* %N */
 196         { ARGSFL_NONE, NULL }, /* %O */
 197         { ARGSFL_NONE, NULL }, /* %P */
 198         { ARGSFL_NONE, NULL }, /* %R */


 226         { ARGSFL_DELIM, NULL }, /* Pf */
 227         { ARGSFL_NONE, NULL }, /* Po */
 228         { ARGSFL_DELIM, NULL }, /* Pq */
 229         { ARGSFL_DELIM, NULL }, /* Qc */
 230         { ARGSFL_DELIM, NULL }, /* Ql */
 231         { ARGSFL_NONE, NULL }, /* Qo */
 232         { ARGSFL_DELIM, NULL }, /* Qq */
 233         { ARGSFL_NONE, NULL }, /* Re */
 234         { ARGSFL_NONE, NULL }, /* Rs */
 235         { ARGSFL_DELIM, NULL }, /* Sc */
 236         { ARGSFL_NONE, NULL }, /* So */
 237         { ARGSFL_DELIM, NULL }, /* Sq */
 238         { ARGSFL_NONE, NULL }, /* Sm */
 239         { ARGSFL_DELIM, NULL }, /* Sx */
 240         { ARGSFL_DELIM, NULL }, /* Sy */
 241         { ARGSFL_DELIM, NULL }, /* Tn */
 242         { ARGSFL_DELIM, NULL }, /* Ux */
 243         { ARGSFL_DELIM, NULL }, /* Xc */
 244         { ARGSFL_NONE, NULL }, /* Xo */
 245         { ARGSFL_NONE, NULL }, /* Fo */ 
 246         { ARGSFL_NONE, NULL }, /* Fc */ 
 247         { ARGSFL_NONE, NULL }, /* Oo */
 248         { ARGSFL_DELIM, NULL }, /* Oc */
 249         { ARGSFL_NONE, args_Bk }, /* Bk */
 250         { ARGSFL_NONE, NULL }, /* Ek */
 251         { ARGSFL_NONE, NULL }, /* Bt */
 252         { ARGSFL_NONE, NULL }, /* Hf */
 253         { ARGSFL_NONE, NULL }, /* Fr */
 254         { ARGSFL_NONE, NULL }, /* Ud */
 255         { ARGSFL_NONE, NULL }, /* Lb */
 256         { ARGSFL_NONE, NULL }, /* Lp */
 257         { ARGSFL_DELIM, NULL }, /* Lk */
 258         { ARGSFL_DELIM, NULL }, /* Mt */
 259         { ARGSFL_DELIM, NULL }, /* Brq */
 260         { ARGSFL_NONE, NULL }, /* Bro */
 261         { ARGSFL_DELIM, NULL }, /* Brc */
 262         { ARGSFL_NONE, NULL }, /* %C */
 263         { ARGSFL_NONE, NULL }, /* Es */
 264         { ARGSFL_NONE, NULL }, /* En */
 265         { ARGSFL_NONE, NULL }, /* Dx */
 266         { ARGSFL_NONE, NULL }, /* %Q */
 267         { ARGSFL_NONE, NULL }, /* br */
 268         { ARGSFL_NONE, NULL }, /* sp */
 269         { ARGSFL_NONE, NULL }, /* %U */
 270         { ARGSFL_NONE, NULL }, /* Ta */
 271 };
 272 
 273 
 274 /*
 275  * Parse an argument from line text.  This comes in the form of -key
 276  * [value0...], which may either have a single mandatory value, at least
 277  * one mandatory value, an optional single value, or no value.
 278  */
 279 enum margverr
 280 mdoc_argv(struct mdoc *m, int line, enum mdoct tok,
 281                 struct mdoc_arg **v, int *pos, char *buf)
 282 {
 283         char             *p, sv;
 284         struct mdoc_argv tmp;
 285         struct mdoc_arg  *arg;
 286         const enum mdocargt *ap;
 287 
 288         if ('\0' == buf[*pos])
 289                 return(ARGV_EOLN);
 290         else if (NULL == (ap = mdocargs[tok].argvs))
 291                 return(ARGV_WORD);
 292         else if ('-' != buf[*pos])
 293                 return(ARGV_WORD);
 294 
 295         /* Seek to the first unescaped space. */
 296 
 297         p = &buf[++(*pos)];
 298 
 299         assert(*pos > 0);
 300 


 327                 if (0 == strcmp(p, mdoc_argnames[tmp.arg]))
 328                         break;
 329 
 330         if (MDOC_ARG_MAX == tmp.arg) {
 331                 /* 
 332                  * The flag was not found.
 333                  * Restore saved zeroed byte and return as a word.
 334                  */
 335                 if (sv)
 336                         buf[*pos - 1] = sv;
 337                 return(ARGV_WORD);
 338         }
 339 
 340         /* Read to the next word (the argument). */
 341 
 342         while (buf[*pos] && ' ' == buf[*pos])
 343                 (*pos)++;
 344 
 345         switch (argvflags[tmp.arg]) {
 346         case (ARGV_SINGLE):
 347                 if ( ! argv_single(m, line, &tmp, pos, buf))
 348                         return(ARGV_ERROR);
 349                 break;
 350         case (ARGV_MULTI):
 351                 if ( ! argv_multi(m, line, &tmp, pos, buf))
 352                         return(ARGV_ERROR);
 353                 break;
 354         case (ARGV_OPT_SINGLE):
 355                 if ( ! argv_opt_single(m, line, &tmp, pos, buf))
 356                         return(ARGV_ERROR);
 357                 break;
 358         case (ARGV_NONE):
 359                 break;
 360         }
 361 
 362         if (NULL == (arg = *v))
 363                 arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
 364 
 365         arg->argc++;
 366         arg->argv = mandoc_realloc
 367                 (arg->argv, arg->argc * sizeof(struct mdoc_argv));
 368 
 369         memcpy(&arg->argv[(int)arg->argc - 1], 
 370                         &tmp, sizeof(struct mdoc_argv));
 371 
 372         return(ARGV_ARG);
 373 }
 374 
 375 void
 376 mdoc_argv_free(struct mdoc_arg *p)
 377 {


 396 
 397 static void
 398 argn_free(struct mdoc_arg *p, int iarg)
 399 {
 400         struct mdoc_argv *arg;
 401         int               j;
 402 
 403         arg = &p->argv[iarg];
 404 
 405         if (arg->sz && arg->value) {
 406                 for (j = (int)arg->sz - 1; j >= 0; j--) 
 407                         free(arg->value[j]);
 408                 free(arg->value);
 409         }
 410 
 411         for (--p->argc; iarg < (int)p->argc; iarg++)
 412                 p->argv[iarg] = p->argv[iarg+1];
 413 }
 414 
 415 enum margserr
 416 mdoc_zargs(struct mdoc *m, int line, int *pos, char *buf, char **v)
 417 {
 418 
 419         return(args(m, line, pos, buf, ARGSFL_NONE, v));
 420 }
 421 
 422 enum margserr
 423 mdoc_args(struct mdoc *m, int line, int *pos, 
 424                 char *buf, enum mdoct tok, char **v)
 425 {
 426         enum argsflag     fl;
 427         struct mdoc_node *n;
 428 
 429         fl = mdocargs[tok].flags;
 430 
 431         if (MDOC_It != tok)
 432                 return(args(m, line, pos, buf, fl, v));
 433 
 434         /*
 435          * We know that we're in an `It', so it's reasonable to expect
 436          * us to be sitting in a `Bl'.  Someday this may not be the case
 437          * (if we allow random `It's sitting out there), so provide a
 438          * safe fall-back into the default behaviour.
 439          */
 440 
 441         for (n = m->last; n; n = n->parent)
 442                 if (MDOC_Bl == n->tok)
 443                         if (LIST_column == n->norm->Bl.type) {
 444                                 fl = ARGSFL_TABSEP;
 445                                 break;
 446                         }
 447 
 448         return(args(m, line, pos, buf, fl, v));
 449 }
 450 
 451 static enum margserr
 452 args(struct mdoc *m, int line, int *pos, 
 453                 char *buf, enum argsflag fl, char **v)
 454 {
 455         char            *p, *pp;

 456         enum margserr    rc;
 457 
 458         if ('\0' == buf[*pos]) {
 459                 if (MDOC_PPHRASE & m->flags)
 460                         return(ARGS_EOLN);
 461                 /*
 462                  * If we're not in a partial phrase and the flag for
 463                  * being a phrase literal is still set, the punctuation
 464                  * is unterminated.
 465                  */
 466                 if (MDOC_PHRASELIT & m->flags)
 467                         mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE);
 468 
 469                 m->flags &= ~MDOC_PHRASELIT;
 470                 return(ARGS_EOLN);
 471         }
 472 
 473         *v = &buf[*pos];
 474 
 475         if (ARGSFL_DELIM == fl)
 476                 if (args_checkpunct(buf, *pos))
 477                         return(ARGS_PUNCT);
 478 
 479         /*
 480          * First handle TABSEP items, restricted to `Bl -column'.  This
 481          * ignores conventional token parsing and instead uses tabs or
 482          * `Ta' macros to separate phrases.  Phrases are parsed again
 483          * for arguments at a later phase.
 484          */
 485 
 486         if (ARGSFL_TABSEP == fl) {
 487                 /* Scan ahead to tab (can't be escaped). */
 488                 p = strchr(*v, '\t');
 489                 pp = NULL;
 490 
 491                 /* Scan ahead to unescaped `Ta'. */
 492                 if ( ! (MDOC_PHRASELIT & m->flags)) 
 493                         for (pp = *v; ; pp++) {
 494                                 if (NULL == (pp = strstr(pp, "Ta")))
 495                                         break;
 496                                 if (pp > *v && ' ' != *(pp - 1))
 497                                         continue;
 498                                 if (' ' == *(pp + 2) || '\0' == *(pp + 2))
 499                                         break;
 500                         }
 501 
 502                 /* By default, assume a phrase. */
 503                 rc = ARGS_PHRASE;
 504 
 505                 /* 
 506                  * Adjust new-buffer position to be beyond delimiter
 507                  * mark (e.g., Ta -> end + 2).
 508                  */
 509                 if (p && pp) {
 510                         *pos += pp < p ? 2 : 1;
 511                         rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
 512                         p = pp < p ? pp : p;
 513                 } else if (p && ! pp) {
 514                         rc = ARGS_PPHRASE;
 515                         *pos += 1;
 516                 } else if (pp && ! p) {
 517                         p = pp;
 518                         *pos += 2;
 519                 } else {
 520                         rc = ARGS_PEND;
 521                         p = strchr(*v, 0);
 522                 }
 523 
 524                 /* Whitespace check for eoln case... */
 525                 if ('\0' == *p && ' ' == *(p - 1))
 526                         mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE);
 527 
 528                 *pos += (int)(p - *v);
 529 
 530                 /* Strip delimiter's preceding whitespace. */
 531                 pp = p - 1;
 532                 while (pp > *v && ' ' == *pp) {
 533                         if (pp > *v && '\\' == *(pp - 1))
 534                                 break;
 535                         pp--;
 536                 }
 537                 *(pp + 1) = 0;
 538 
 539                 /* Strip delimiter's proceeding whitespace. */
 540                 for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
 541                         /* Skip ahead. */ ;
 542 
 543                 return(rc);
 544         } 
 545 
 546         /* 
 547          * Process a quoted literal.  A quote begins with a double-quote
 548          * and ends with a double-quote NOT preceded by a double-quote.


 549          * Whitespace is NOT involved in literal termination.
 550          */
 551 
 552         if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
 553                 if ( ! (MDOC_PHRASELIT & m->flags))
 554                         *v = &buf[++(*pos)];
 555 
 556                 if (MDOC_PPHRASE & m->flags)
 557                         m->flags |= MDOC_PHRASELIT;
 558 

 559                 for ( ; buf[*pos]; (*pos)++) {



 560                         if ('\"' != buf[*pos])
 561                                 continue;

 562                         if ('\"' != buf[*pos + 1])
 563                                 break;


 564                         (*pos)++;
 565                 }


 566 
 567                 if ('\0' == buf[*pos]) {
 568                         if (MDOC_PPHRASE & m->flags)
 569                                 return(ARGS_QWORD);
 570                         mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE);
 571                         return(ARGS_QWORD);
 572                 }
 573 
 574                 m->flags &= ~MDOC_PHRASELIT;
 575                 buf[(*pos)++] = '\0';
 576 
 577                 if ('\0' == buf[*pos])
 578                         return(ARGS_QWORD);
 579 
 580                 while (' ' == buf[*pos])
 581                         (*pos)++;
 582 
 583                 if ('\0' == buf[*pos])
 584                         mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE);
 585 
 586                 return(ARGS_QWORD);
 587         }
 588 
 589         p = &buf[*pos];
 590         *v = mandoc_getarg(m->parse, &p, line, pos);
 591 
 592         return(ARGS_WORD);
 593 }
 594 
 595 /* 
 596  * Check if the string consists only of space-separated closing
 597  * delimiters.  This is a bit of a dance: the first must be a close
 598  * delimiter, but it may be followed by middle delimiters.  Arbitrary
 599  * whitespace may separate these tokens.
 600  */
 601 static int
 602 args_checkpunct(const char *buf, int i)
 603 {
 604         int              j;
 605         char             dbuf[DELIMSZ];
 606         enum mdelim      d;
 607 
 608         /* First token must be a close-delimiter. */
 609 
 610         for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++)


 626                 j = 0;
 627                 while (buf[i] && ' ' != buf[i] && j < DELIMSZ)
 628                         dbuf[j++] = buf[i++];
 629 
 630                 if (DELIMSZ == j)
 631                         return(0);
 632 
 633                 dbuf[j] = '\0';
 634                 d = mdoc_isdelim(dbuf);
 635                 if (DELIM_NONE == d || DELIM_OPEN == d)
 636                         return(0);
 637 
 638                 while (' ' == buf[i])
 639                         i++;
 640         }
 641 
 642         return('\0' == buf[i]);
 643 }
 644 
 645 static int
 646 argv_multi(struct mdoc *m, int line, 
 647                 struct mdoc_argv *v, int *pos, char *buf)
 648 {
 649         enum margserr    ac;
 650         char            *p;
 651 
 652         for (v->sz = 0; ; v->sz++) {
 653                 if ('-' == buf[*pos])
 654                         break;
 655                 ac = args(m, line, pos, buf, ARGSFL_NONE, &p);
 656                 if (ARGS_ERROR == ac)
 657                         return(0);
 658                 else if (ARGS_EOLN == ac)
 659                         break;
 660 
 661                 if (0 == v->sz % MULTI_STEP)
 662                         v->value = mandoc_realloc(v->value, 
 663                                 (v->sz + MULTI_STEP) * sizeof(char *));
 664 
 665                 v->value[(int)v->sz] = mandoc_strdup(p);
 666         }
 667 
 668         return(1);
 669 }
 670 
 671 static int
 672 argv_opt_single(struct mdoc *m, int line, 
 673                 struct mdoc_argv *v, int *pos, char *buf)
 674 {
 675         enum margserr    ac;
 676         char            *p;
 677 
 678         if ('-' == buf[*pos])
 679                 return(1);
 680 
 681         ac = args(m, line, pos, buf, ARGSFL_NONE, &p);
 682         if (ARGS_ERROR == ac)
 683                 return(0);
 684         if (ARGS_EOLN == ac)
 685                 return(1);
 686 
 687         v->sz = 1;
 688         v->value = mandoc_malloc(sizeof(char *));
 689         v->value[0] = mandoc_strdup(p);
 690 
 691         return(1);
 692 }
 693 
 694 static int
 695 argv_single(struct mdoc *m, int line, 
 696                 struct mdoc_argv *v, int *pos, char *buf)
 697 {
 698         int              ppos;
 699         enum margserr    ac;
 700         char            *p;
 701 
 702         ppos = *pos;
 703 
 704         ac = args(m, line, pos, buf, ARGSFL_NONE, &p);
 705         if (ARGS_EOLN == ac) {
 706                 mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTARGVCOUNT);
 707                 return(0);
 708         } else if (ARGS_ERROR == ac)
 709                 return(0);
 710 
 711         v->sz = 1;
 712         v->value = mandoc_malloc(sizeof(char *));
 713         v->value[0] = mandoc_strdup(p);
 714 
 715         return(1);
 716 }
   1 /*      $Id: mdoc_argv.c,v 1.89 2013/12/25 00:50:05 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  * Copyright (c) 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 #include <sys/types.h>
  23 
  24 #include <assert.h>


  26 #include <stdio.h>
  27 #include <string.h>
  28 
  29 #include "mdoc.h"
  30 #include "mandoc.h"
  31 #include "libmdoc.h"
  32 #include "libmandoc.h"
  33 
  34 #define MULTI_STEP       5 /* pre-allocate argument values */
  35 #define DELIMSZ          6 /* max possible size of a delimiter */
  36 
  37 enum    argsflag {
  38         ARGSFL_NONE = 0,
  39         ARGSFL_DELIM, /* handle delimiters of [[::delim::][ ]+]+ */
  40         ARGSFL_TABSEP /* handle tab/`Ta' separated phrases */
  41 };
  42 
  43 enum    argvflag {
  44         ARGV_NONE, /* no args to flag (e.g., -split) */
  45         ARGV_SINGLE, /* one arg to flag (e.g., -file xxx)  */
  46         ARGV_MULTI /* multiple args (e.g., -column xxx yyy) */

  47 };
  48 
  49 struct  mdocarg {
  50         enum argsflag    flags;
  51         const enum mdocargt *argvs;
  52 };
  53 
  54 static  void             argn_free(struct mdoc_arg *, int);
  55 static  enum margserr    args(struct mdoc *, int, int *, 
  56                                 char *, enum argsflag, char **);
  57 static  int              args_checkpunct(const char *, int);
  58 static  int              argv_multi(struct mdoc *, int, 
  59                                 struct mdoc_argv *, int *, char *);


  60 static  int              argv_single(struct mdoc *, int, 
  61                                 struct mdoc_argv *, int *, char *);
  62 
  63 static  const enum argvflag argvflags[MDOC_ARG_MAX] = {
  64         ARGV_NONE,      /* MDOC_Split */
  65         ARGV_NONE,      /* MDOC_Nosplit */
  66         ARGV_NONE,      /* MDOC_Ragged */
  67         ARGV_NONE,      /* MDOC_Unfilled */
  68         ARGV_NONE,      /* MDOC_Literal */
  69         ARGV_SINGLE,    /* MDOC_File */
  70         ARGV_SINGLE,    /* MDOC_Offset */
  71         ARGV_NONE,      /* MDOC_Bullet */
  72         ARGV_NONE,      /* MDOC_Dash */
  73         ARGV_NONE,      /* MDOC_Hyphen */
  74         ARGV_NONE,      /* MDOC_Item */
  75         ARGV_NONE,      /* MDOC_Enum */
  76         ARGV_NONE,      /* MDOC_Tag */
  77         ARGV_NONE,      /* MDOC_Diag */
  78         ARGV_NONE,      /* MDOC_Hang */
  79         ARGV_NONE,      /* MDOC_Ohang */
  80         ARGV_NONE,      /* MDOC_Inset */
  81         ARGV_MULTI,     /* MDOC_Column */
  82         ARGV_SINGLE,    /* MDOC_Width */
  83         ARGV_NONE,      /* MDOC_Compact */
  84         ARGV_NONE,      /* MDOC_Std */
  85         ARGV_NONE,      /* MDOC_Filled */
  86         ARGV_NONE,      /* MDOC_Words */
  87         ARGV_NONE,      /* MDOC_Emphasis */
  88         ARGV_NONE,      /* MDOC_Symbolic */
  89         ARGV_NONE       /* MDOC_Symbolic */
  90 };
  91 
  92 static  const enum mdocargt args_Ex[] = {
  93         MDOC_Std,
  94         MDOC_ARG_MAX
  95 };
  96 
  97 static  const enum mdocargt args_An[] = {
  98         MDOC_Split,
  99         MDOC_Nosplit,
 100         MDOC_ARG_MAX
 101 };
 102 


 127 static  const enum mdocargt args_Bl[] = {
 128         MDOC_Bullet,
 129         MDOC_Dash,
 130         MDOC_Hyphen,
 131         MDOC_Item,
 132         MDOC_Enum,
 133         MDOC_Tag,
 134         MDOC_Diag,
 135         MDOC_Hang,
 136         MDOC_Ohang,
 137         MDOC_Inset,
 138         MDOC_Column,
 139         MDOC_Width,
 140         MDOC_Offset,
 141         MDOC_Compact,
 142         MDOC_Nested,
 143         MDOC_ARG_MAX
 144 };
 145 
 146 static  const struct mdocarg mdocargs[MDOC_MAX] = {
 147         { ARGSFL_DELIM, NULL }, /* Ap */
 148         { ARGSFL_NONE, NULL }, /* Dd */
 149         { ARGSFL_NONE, NULL }, /* Dt */
 150         { ARGSFL_NONE, NULL }, /* Os */
 151         { ARGSFL_NONE, NULL }, /* Sh */
 152         { ARGSFL_NONE, NULL }, /* Ss */ 
 153         { ARGSFL_NONE, NULL }, /* Pp */ 
 154         { ARGSFL_DELIM, NULL }, /* D1 */
 155         { ARGSFL_DELIM, NULL }, /* Dl */
 156         { ARGSFL_NONE, args_Bd }, /* Bd */
 157         { ARGSFL_NONE, NULL }, /* Ed */
 158         { ARGSFL_NONE, args_Bl }, /* Bl */
 159         { ARGSFL_NONE, NULL }, /* El */
 160         { ARGSFL_NONE, NULL }, /* It */
 161         { ARGSFL_DELIM, NULL }, /* Ad */ 
 162         { ARGSFL_DELIM, args_An }, /* An */
 163         { ARGSFL_DELIM, NULL }, /* Ar */
 164         { ARGSFL_DELIM, NULL }, /* Cd */
 165         { ARGSFL_DELIM, NULL }, /* Cm */
 166         { ARGSFL_DELIM, NULL }, /* Dv */ 
 167         { ARGSFL_DELIM, NULL }, /* Er */ 
 168         { ARGSFL_DELIM, NULL }, /* Ev */ 
 169         { ARGSFL_NONE, args_Ex }, /* Ex */
 170         { ARGSFL_DELIM, NULL }, /* Fa */ 
 171         { ARGSFL_NONE, NULL }, /* Fd */ 
 172         { ARGSFL_DELIM, NULL }, /* Fl */
 173         { ARGSFL_DELIM, NULL }, /* Fn */ 
 174         { ARGSFL_DELIM, NULL }, /* Ft */ 
 175         { ARGSFL_DELIM, NULL }, /* Ic */ 
 176         { ARGSFL_DELIM, NULL }, /* In */ 
 177         { ARGSFL_DELIM, NULL }, /* Li */
 178         { ARGSFL_NONE, NULL }, /* Nd */ 
 179         { ARGSFL_DELIM, NULL }, /* Nm */ 
 180         { ARGSFL_DELIM, NULL }, /* Op */
 181         { ARGSFL_NONE, NULL }, /* Ot */
 182         { ARGSFL_DELIM, NULL }, /* Pa */
 183         { ARGSFL_NONE, args_Ex }, /* Rv */
 184         { ARGSFL_DELIM, NULL }, /* St */ 
 185         { ARGSFL_DELIM, NULL }, /* Va */
 186         { ARGSFL_DELIM, NULL }, /* Vt */ 
 187         { ARGSFL_DELIM, NULL }, /* Xr */
 188         { ARGSFL_NONE, NULL }, /* %A */
 189         { ARGSFL_NONE, NULL }, /* %B */
 190         { ARGSFL_NONE, NULL }, /* %D */
 191         { ARGSFL_NONE, NULL }, /* %I */
 192         { ARGSFL_NONE, NULL }, /* %J */
 193         { ARGSFL_NONE, NULL }, /* %N */
 194         { ARGSFL_NONE, NULL }, /* %O */
 195         { ARGSFL_NONE, NULL }, /* %P */
 196         { ARGSFL_NONE, NULL }, /* %R */


 224         { ARGSFL_DELIM, NULL }, /* Pf */
 225         { ARGSFL_NONE, NULL }, /* Po */
 226         { ARGSFL_DELIM, NULL }, /* Pq */
 227         { ARGSFL_DELIM, NULL }, /* Qc */
 228         { ARGSFL_DELIM, NULL }, /* Ql */
 229         { ARGSFL_NONE, NULL }, /* Qo */
 230         { ARGSFL_DELIM, NULL }, /* Qq */
 231         { ARGSFL_NONE, NULL }, /* Re */
 232         { ARGSFL_NONE, NULL }, /* Rs */
 233         { ARGSFL_DELIM, NULL }, /* Sc */
 234         { ARGSFL_NONE, NULL }, /* So */
 235         { ARGSFL_DELIM, NULL }, /* Sq */
 236         { ARGSFL_NONE, NULL }, /* Sm */
 237         { ARGSFL_DELIM, NULL }, /* Sx */
 238         { ARGSFL_DELIM, NULL }, /* Sy */
 239         { ARGSFL_DELIM, NULL }, /* Tn */
 240         { ARGSFL_DELIM, NULL }, /* Ux */
 241         { ARGSFL_DELIM, NULL }, /* Xc */
 242         { ARGSFL_NONE, NULL }, /* Xo */
 243         { ARGSFL_NONE, NULL }, /* Fo */ 
 244         { ARGSFL_DELIM, NULL }, /* Fc */ 
 245         { ARGSFL_NONE, NULL }, /* Oo */
 246         { ARGSFL_DELIM, NULL }, /* Oc */
 247         { ARGSFL_NONE, args_Bk }, /* Bk */
 248         { ARGSFL_NONE, NULL }, /* Ek */
 249         { ARGSFL_NONE, NULL }, /* Bt */
 250         { ARGSFL_NONE, NULL }, /* Hf */
 251         { ARGSFL_NONE, NULL }, /* Fr */
 252         { ARGSFL_NONE, NULL }, /* Ud */
 253         { ARGSFL_DELIM, NULL }, /* Lb */
 254         { ARGSFL_NONE, NULL }, /* Lp */
 255         { ARGSFL_DELIM, NULL }, /* Lk */
 256         { ARGSFL_DELIM, NULL }, /* Mt */
 257         { ARGSFL_DELIM, NULL }, /* Brq */
 258         { ARGSFL_NONE, NULL }, /* Bro */
 259         { ARGSFL_DELIM, NULL }, /* Brc */
 260         { ARGSFL_NONE, NULL }, /* %C */
 261         { ARGSFL_NONE, NULL }, /* Es */
 262         { ARGSFL_NONE, NULL }, /* En */
 263         { ARGSFL_DELIM, NULL }, /* Dx */
 264         { ARGSFL_NONE, NULL }, /* %Q */
 265         { ARGSFL_NONE, NULL }, /* br */
 266         { ARGSFL_NONE, NULL }, /* sp */
 267         { ARGSFL_NONE, NULL }, /* %U */
 268         { ARGSFL_NONE, NULL }, /* Ta */
 269 };
 270 
 271 
 272 /*
 273  * Parse an argument from line text.  This comes in the form of -key
 274  * [value0...], which may either have a single mandatory value, at least
 275  * one mandatory value, an optional single value, or no value.
 276  */
 277 enum margverr
 278 mdoc_argv(struct mdoc *mdoc, int line, enum mdoct tok,
 279                 struct mdoc_arg **v, int *pos, char *buf)
 280 {
 281         char             *p, sv;
 282         struct mdoc_argv tmp;
 283         struct mdoc_arg  *arg;
 284         const enum mdocargt *ap;
 285 
 286         if ('\0' == buf[*pos])
 287                 return(ARGV_EOLN);
 288         else if (NULL == (ap = mdocargs[tok].argvs))
 289                 return(ARGV_WORD);
 290         else if ('-' != buf[*pos])
 291                 return(ARGV_WORD);
 292 
 293         /* Seek to the first unescaped space. */
 294 
 295         p = &buf[++(*pos)];
 296 
 297         assert(*pos > 0);
 298 


 325                 if (0 == strcmp(p, mdoc_argnames[tmp.arg]))
 326                         break;
 327 
 328         if (MDOC_ARG_MAX == tmp.arg) {
 329                 /* 
 330                  * The flag was not found.
 331                  * Restore saved zeroed byte and return as a word.
 332                  */
 333                 if (sv)
 334                         buf[*pos - 1] = sv;
 335                 return(ARGV_WORD);
 336         }
 337 
 338         /* Read to the next word (the argument). */
 339 
 340         while (buf[*pos] && ' ' == buf[*pos])
 341                 (*pos)++;
 342 
 343         switch (argvflags[tmp.arg]) {
 344         case (ARGV_SINGLE):
 345                 if ( ! argv_single(mdoc, line, &tmp, pos, buf))
 346                         return(ARGV_ERROR);
 347                 break;
 348         case (ARGV_MULTI):
 349                 if ( ! argv_multi(mdoc, line, &tmp, pos, buf))
 350                         return(ARGV_ERROR);
 351                 break;




 352         case (ARGV_NONE):
 353                 break;
 354         }
 355 
 356         if (NULL == (arg = *v))
 357                 arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
 358 
 359         arg->argc++;
 360         arg->argv = mandoc_realloc
 361                 (arg->argv, arg->argc * sizeof(struct mdoc_argv));
 362 
 363         memcpy(&arg->argv[(int)arg->argc - 1], 
 364                         &tmp, sizeof(struct mdoc_argv));
 365 
 366         return(ARGV_ARG);
 367 }
 368 
 369 void
 370 mdoc_argv_free(struct mdoc_arg *p)
 371 {


 390 
 391 static void
 392 argn_free(struct mdoc_arg *p, int iarg)
 393 {
 394         struct mdoc_argv *arg;
 395         int               j;
 396 
 397         arg = &p->argv[iarg];
 398 
 399         if (arg->sz && arg->value) {
 400                 for (j = (int)arg->sz - 1; j >= 0; j--) 
 401                         free(arg->value[j]);
 402                 free(arg->value);
 403         }
 404 
 405         for (--p->argc; iarg < (int)p->argc; iarg++)
 406                 p->argv[iarg] = p->argv[iarg+1];
 407 }
 408 
 409 enum margserr
 410 mdoc_zargs(struct mdoc *mdoc, int line, int *pos, char *buf, char **v)
 411 {
 412 
 413         return(args(mdoc, line, pos, buf, ARGSFL_NONE, v));
 414 }
 415 
 416 enum margserr
 417 mdoc_args(struct mdoc *mdoc, int line, int *pos, 
 418                 char *buf, enum mdoct tok, char **v)
 419 {
 420         enum argsflag     fl;
 421         struct mdoc_node *n;
 422 
 423         fl = mdocargs[tok].flags;
 424 
 425         if (MDOC_It != tok)
 426                 return(args(mdoc, line, pos, buf, fl, v));
 427 
 428         /*
 429          * We know that we're in an `It', so it's reasonable to expect
 430          * us to be sitting in a `Bl'.  Someday this may not be the case
 431          * (if we allow random `It's sitting out there), so provide a
 432          * safe fall-back into the default behaviour.
 433          */
 434 
 435         for (n = mdoc->last; n; n = n->parent)
 436                 if (MDOC_Bl == n->tok)
 437                         if (LIST_column == n->norm->Bl.type) {
 438                                 fl = ARGSFL_TABSEP;
 439                                 break;
 440                         }
 441 
 442         return(args(mdoc, line, pos, buf, fl, v));
 443 }
 444 
 445 static enum margserr
 446 args(struct mdoc *mdoc, int line, int *pos, 
 447                 char *buf, enum argsflag fl, char **v)
 448 {
 449         char            *p, *pp;
 450         int              pairs;
 451         enum margserr    rc;
 452 
 453         if ('\0' == buf[*pos]) {
 454                 if (MDOC_PPHRASE & mdoc->flags)
 455                         return(ARGS_EOLN);
 456                 /*
 457                  * If we're not in a partial phrase and the flag for
 458                  * being a phrase literal is still set, the punctuation
 459                  * is unterminated.
 460                  */
 461                 if (MDOC_PHRASELIT & mdoc->flags)
 462                         mdoc_pmsg(mdoc, line, *pos, MANDOCERR_BADQUOTE);
 463 
 464                 mdoc->flags &= ~MDOC_PHRASELIT;
 465                 return(ARGS_EOLN);
 466         }
 467 
 468         *v = &buf[*pos];
 469 
 470         if (ARGSFL_DELIM == fl)
 471                 if (args_checkpunct(buf, *pos))
 472                         return(ARGS_PUNCT);
 473 
 474         /*
 475          * First handle TABSEP items, restricted to `Bl -column'.  This
 476          * ignores conventional token parsing and instead uses tabs or
 477          * `Ta' macros to separate phrases.  Phrases are parsed again
 478          * for arguments at a later phase.
 479          */
 480 
 481         if (ARGSFL_TABSEP == fl) {
 482                 /* Scan ahead to tab (can't be escaped). */
 483                 p = strchr(*v, '\t');
 484                 pp = NULL;
 485 
 486                 /* Scan ahead to unescaped `Ta'. */
 487                 if ( ! (MDOC_PHRASELIT & mdoc->flags)) 
 488                         for (pp = *v; ; pp++) {
 489                                 if (NULL == (pp = strstr(pp, "Ta")))
 490                                         break;
 491                                 if (pp > *v && ' ' != *(pp - 1))
 492                                         continue;
 493                                 if (' ' == *(pp + 2) || '\0' == *(pp + 2))
 494                                         break;
 495                         }
 496 
 497                 /* By default, assume a phrase. */
 498                 rc = ARGS_PHRASE;
 499 
 500                 /* 
 501                  * Adjust new-buffer position to be beyond delimiter
 502                  * mark (e.g., Ta -> end + 2).
 503                  */
 504                 if (p && pp) {
 505                         *pos += pp < p ? 2 : 1;
 506                         rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
 507                         p = pp < p ? pp : p;
 508                 } else if (p && ! pp) {
 509                         rc = ARGS_PPHRASE;
 510                         *pos += 1;
 511                 } else if (pp && ! p) {
 512                         p = pp;
 513                         *pos += 2;
 514                 } else {
 515                         rc = ARGS_PEND;
 516                         p = strchr(*v, 0);
 517                 }
 518 
 519                 /* Whitespace check for eoln case... */
 520                 if ('\0' == *p && ' ' == *(p - 1))
 521                         mdoc_pmsg(mdoc, line, *pos, MANDOCERR_EOLNSPACE);
 522 
 523                 *pos += (int)(p - *v);
 524 
 525                 /* Strip delimiter's preceding whitespace. */
 526                 pp = p - 1;
 527                 while (pp > *v && ' ' == *pp) {
 528                         if (pp > *v && '\\' == *(pp - 1))
 529                                 break;
 530                         pp--;
 531                 }
 532                 *(pp + 1) = 0;
 533 
 534                 /* Strip delimiter's proceeding whitespace. */
 535                 for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
 536                         /* Skip ahead. */ ;
 537 
 538                 return(rc);
 539         }
 540 
 541         /*
 542          * Process a quoted literal.  A quote begins with a double-quote
 543          * and ends with a double-quote NOT preceded by a double-quote.
 544          * NUL-terminate the literal in place.
 545          * Collapse pairs of quotes inside quoted literals.
 546          * Whitespace is NOT involved in literal termination.
 547          */
 548 
 549         if (MDOC_PHRASELIT & mdoc->flags || '\"' == buf[*pos]) {
 550                 if ( ! (MDOC_PHRASELIT & mdoc->flags))
 551                         *v = &buf[++(*pos)];
 552 
 553                 if (MDOC_PPHRASE & mdoc->flags)
 554                         mdoc->flags |= MDOC_PHRASELIT;
 555 
 556                 pairs = 0;
 557                 for ( ; buf[*pos]; (*pos)++) {
 558                         /* Move following text left after quoted quotes. */
 559                         if (pairs)
 560                                 buf[*pos - pairs] = buf[*pos];
 561                         if ('\"' != buf[*pos])
 562                                 continue;
 563                         /* Unquoted quotes end quoted args. */
 564                         if ('\"' != buf[*pos + 1])
 565                                 break;
 566                         /* Quoted quotes collapse. */
 567                         pairs++;
 568                         (*pos)++;
 569                 }
 570                 if (pairs)
 571                         buf[*pos - pairs] = '\0';
 572 
 573                 if ('\0' == buf[*pos]) {
 574                         if (MDOC_PPHRASE & mdoc->flags)
 575                                 return(ARGS_QWORD);
 576                         mdoc_pmsg(mdoc, line, *pos, MANDOCERR_BADQUOTE);
 577                         return(ARGS_QWORD);
 578                 }
 579 
 580                 mdoc->flags &= ~MDOC_PHRASELIT;
 581                 buf[(*pos)++] = '\0';
 582 
 583                 if ('\0' == buf[*pos])
 584                         return(ARGS_QWORD);
 585 
 586                 while (' ' == buf[*pos])
 587                         (*pos)++;
 588 
 589                 if ('\0' == buf[*pos])
 590                         mdoc_pmsg(mdoc, line, *pos, MANDOCERR_EOLNSPACE);
 591 
 592                 return(ARGS_QWORD);
 593         }
 594 
 595         p = &buf[*pos];
 596         *v = mandoc_getarg(mdoc->parse, &p, line, pos);
 597 
 598         return(ARGS_WORD);
 599 }
 600 
 601 /* 
 602  * Check if the string consists only of space-separated closing
 603  * delimiters.  This is a bit of a dance: the first must be a close
 604  * delimiter, but it may be followed by middle delimiters.  Arbitrary
 605  * whitespace may separate these tokens.
 606  */
 607 static int
 608 args_checkpunct(const char *buf, int i)
 609 {
 610         int              j;
 611         char             dbuf[DELIMSZ];
 612         enum mdelim      d;
 613 
 614         /* First token must be a close-delimiter. */
 615 
 616         for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++)


 632                 j = 0;
 633                 while (buf[i] && ' ' != buf[i] && j < DELIMSZ)
 634                         dbuf[j++] = buf[i++];
 635 
 636                 if (DELIMSZ == j)
 637                         return(0);
 638 
 639                 dbuf[j] = '\0';
 640                 d = mdoc_isdelim(dbuf);
 641                 if (DELIM_NONE == d || DELIM_OPEN == d)
 642                         return(0);
 643 
 644                 while (' ' == buf[i])
 645                         i++;
 646         }
 647 
 648         return('\0' == buf[i]);
 649 }
 650 
 651 static int
 652 argv_multi(struct mdoc *mdoc, int line, 
 653                 struct mdoc_argv *v, int *pos, char *buf)
 654 {
 655         enum margserr    ac;
 656         char            *p;
 657 
 658         for (v->sz = 0; ; v->sz++) {
 659                 if ('-' == buf[*pos])
 660                         break;
 661                 ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
 662                 if (ARGS_ERROR == ac)
 663                         return(0);
 664                 else if (ARGS_EOLN == ac)
 665                         break;
 666 
 667                 if (0 == v->sz % MULTI_STEP)
 668                         v->value = mandoc_realloc(v->value, 
 669                                 (v->sz + MULTI_STEP) * sizeof(char *));
 670 
 671                 v->value[(int)v->sz] = mandoc_strdup(p);
 672         }
 673 
 674         return(1);
 675 }
 676 
 677 static int
 678 argv_single(struct mdoc *mdoc, int line, 
 679                 struct mdoc_argv *v, int *pos, char *buf)
 680 {
 681         enum margserr    ac;
 682         char            *p;
 683 
 684         ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);



 685         if (ARGS_ERROR == ac)
 686                 return(0);
 687         if (ARGS_EOLN == ac)
 688                 return(1);
 689 
 690         v->sz = 1;
























 691         v->value = mandoc_malloc(sizeof(char *));
 692         v->value[0] = mandoc_strdup(p);
 693 
 694         return(1);
 695 }