mdoc_argv.c

   1 /*      $Id: mdoc_argv.c,v 1.83 2012/04/15 15:26:49 schwarze 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>
  24 #include <stdlib.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 };
  47
  48 struct  mdocarg {
  49         enum argsflag    flags;
  50         const enum mdocargt *argvs;
  51 };
  52
  53 static  void             argn_free(struct mdoc_arg *, int);
  54 static  enum margserr    args(struct mdoc *, int, int *,
  55                                 char *, enum argsflag, char **);
  56 static  int              args_checkpunct(const char *, int);
  57 static  int              argv_multi(struct mdoc *, int,
  58                                 struct mdoc_argv *, int *, char *);
  59 static  int              argv_single(struct mdoc *, int,
  60                                 struct mdoc_argv *, int *, char *);
  61
  62 static  const enum argvflag argvflags[MDOC_ARG_MAX] = {
  63         ARGV_NONE,      /* MDOC_Split */
  64         ARGV_NONE,      /* MDOC_Nosplit */
  65         ARGV_NONE,      /* MDOC_Ragged */
  66         ARGV_NONE,      /* MDOC_Unfilled */
  67         ARGV_NONE,      /* MDOC_Literal */
  68         ARGV_SINGLE,    /* MDOC_File */
  69         ARGV_SINGLE,    /* MDOC_Offset */
  70         ARGV_NONE,      /* MDOC_Bullet */
  71         ARGV_NONE,      /* MDOC_Dash */
  72         ARGV_NONE,      /* MDOC_Hyphen */
  73         ARGV_NONE,      /* MDOC_Item */
  74         ARGV_NONE,      /* MDOC_Enum */
  75         ARGV_NONE,      /* MDOC_Tag */
  76         ARGV_NONE,      /* MDOC_Diag */
  77         ARGV_NONE,      /* MDOC_Hang */
  78         ARGV_NONE,      /* MDOC_Ohang */
  79         ARGV_NONE,      /* MDOC_Inset */
  80         ARGV_MULTI,     /* MDOC_Column */
  81         ARGV_SINGLE,    /* MDOC_Width */
  82         ARGV_NONE,      /* MDOC_Compact */
  83         ARGV_NONE,      /* MDOC_Std */
  84         ARGV_NONE,      /* MDOC_Filled */
  85         ARGV_NONE,      /* MDOC_Words */
  86         ARGV_NONE,      /* MDOC_Emphasis */
  87         ARGV_NONE,      /* MDOC_Symbolic */
  88         ARGV_NONE       /* MDOC_Symbolic */
  89 };
  90
  91 static  const enum mdocargt args_Ex[] = {
  92         MDOC_Std,
  93         MDOC_ARG_MAX
  94 };
  95
  96 static  const enum mdocargt args_An[] = {
  97         MDOC_Split,
  98         MDOC_Nosplit,
  99         MDOC_ARG_MAX
 100 };
 101
 102 static  const enum mdocargt args_Bd[] = {
 103         MDOC_Ragged,
 104         MDOC_Unfilled,
 105         MDOC_Filled,
 106         MDOC_Literal,
 107         MDOC_File,
 108         MDOC_Offset,
 109         MDOC_Compact,
 110         MDOC_Centred,
 111         MDOC_ARG_MAX
 112 };
 113
 114 static  const enum mdocargt args_Bf[] = {
 115         MDOC_Emphasis,
 116         MDOC_Literal,
 117         MDOC_Symbolic,
 118         MDOC_ARG_MAX
 119 };
 120
 121 static  const enum mdocargt args_Bk[] = {
 122         MDOC_Words,
 123         MDOC_ARG_MAX
 124 };
 125
 126 static  const enum mdocargt args_Bl[] = {
 127         MDOC_Bullet,
 128         MDOC_Dash,
 129         MDOC_Hyphen,
 130         MDOC_Item,
 131         MDOC_Enum,
 132         MDOC_Tag,
 133         MDOC_Diag,
 134         MDOC_Hang,
 135         MDOC_Ohang,
 136         MDOC_Inset,
 137         MDOC_Column,
 138         MDOC_Width,
 139         MDOC_Offset,
 140         MDOC_Compact,
 141         MDOC_Nested,
 142         MDOC_ARG_MAX
 143 };
 144
 145 static  const struct mdocarg mdocargs[MDOC_MAX] = {
 146         { ARGSFL_NONE, NULL }, /* Ap */
 147         { ARGSFL_NONE, NULL }, /* Dd */
 148         { ARGSFL_NONE, NULL }, /* Dt */
 149         { ARGSFL_NONE, NULL }, /* Os */
 150         { ARGSFL_NONE, NULL }, /* Sh */
 151         { ARGSFL_NONE, NULL }, /* Ss */
 152         { ARGSFL_NONE, NULL }, /* Pp */
 153         { ARGSFL_DELIM, NULL }, /* D1 */
 154         { ARGSFL_DELIM, NULL }, /* Dl */
 155         { ARGSFL_NONE, args_Bd }, /* Bd */
 156         { ARGSFL_NONE, NULL }, /* Ed */
 157         { ARGSFL_NONE, args_Bl }, /* Bl */
 158         { ARGSFL_NONE, NULL }, /* El */
 159         { ARGSFL_NONE, NULL }, /* It */
 160         { ARGSFL_DELIM, NULL }, /* Ad */
 161         { ARGSFL_DELIM, args_An }, /* An */
 162         { ARGSFL_DELIM, NULL }, /* Ar */
 163         { ARGSFL_NONE, NULL }, /* Cd */
 164         { ARGSFL_DELIM, NULL }, /* Cm */
 165         { ARGSFL_DELIM, NULL }, /* Dv */
 166         { ARGSFL_DELIM, NULL }, /* Er */
 167         { ARGSFL_DELIM, NULL }, /* Ev */
 168         { ARGSFL_NONE, args_Ex }, /* Ex */
 169         { ARGSFL_DELIM, NULL }, /* Fa */
 170         { ARGSFL_NONE, NULL }, /* Fd */
 171         { ARGSFL_DELIM, NULL }, /* Fl */
 172         { ARGSFL_DELIM, NULL }, /* Fn */
 173         { ARGSFL_DELIM, NULL }, /* Ft */
 174         { ARGSFL_DELIM, NULL }, /* Ic */
 175         { ARGSFL_NONE, NULL }, /* In */
 176         { ARGSFL_DELIM, NULL }, /* Li */
 177         { ARGSFL_NONE, NULL }, /* Nd */
 178         { ARGSFL_DELIM, NULL }, /* Nm */
 179         { ARGSFL_DELIM, NULL }, /* Op */
 180         { ARGSFL_NONE, NULL }, /* Ot */
 181         { ARGSFL_DELIM, NULL }, /* Pa */
 182         { ARGSFL_NONE, args_Ex }, /* Rv */
 183         { ARGSFL_DELIM, NULL }, /* St */
 184         { ARGSFL_DELIM, NULL }, /* Va */
 185         { ARGSFL_DELIM, NULL }, /* Vt */
 186         { ARGSFL_DELIM, NULL }, /* Xr */
 187         { ARGSFL_NONE, NULL }, /* %A */
 188         { ARGSFL_NONE, NULL }, /* %B */
 189         { ARGSFL_NONE, NULL }, /* %D */
 190         { ARGSFL_NONE, NULL }, /* %I */
 191         { ARGSFL_NONE, NULL }, /* %J */
 192         { ARGSFL_NONE, NULL }, /* %N */
 193         { ARGSFL_NONE, NULL }, /* %O */
 194         { ARGSFL_NONE, NULL }, /* %P */
 195         { ARGSFL_NONE, NULL }, /* %R */
 196         { ARGSFL_NONE, NULL }, /* %T */
 197         { ARGSFL_NONE, NULL }, /* %V */
 198         { ARGSFL_DELIM, NULL }, /* Ac */
 199         { ARGSFL_NONE, NULL }, /* Ao */
 200         { ARGSFL_DELIM, NULL }, /* Aq */
 201         { ARGSFL_DELIM, NULL }, /* At */
 202         { ARGSFL_DELIM, NULL }, /* Bc */
 203         { ARGSFL_NONE, args_Bf }, /* Bf */
 204         { ARGSFL_NONE, NULL }, /* Bo */
 205         { ARGSFL_DELIM, NULL }, /* Bq */
 206         { ARGSFL_DELIM, NULL }, /* Bsx */
 207         { ARGSFL_DELIM, NULL }, /* Bx */
 208         { ARGSFL_NONE, NULL }, /* Db */
 209         { ARGSFL_DELIM, NULL }, /* Dc */
 210         { ARGSFL_NONE, NULL }, /* Do */
 211         { ARGSFL_DELIM, NULL }, /* Dq */
 212         { ARGSFL_DELIM, NULL }, /* Ec */
 213         { ARGSFL_NONE, NULL }, /* Ef */
 214         { ARGSFL_DELIM, NULL }, /* Em */
 215         { ARGSFL_NONE, NULL }, /* Eo */
 216         { ARGSFL_DELIM, NULL }, /* Fx */
 217         { ARGSFL_DELIM, NULL }, /* Ms */
 218         { ARGSFL_DELIM, NULL }, /* No */
 219         { ARGSFL_DELIM, NULL }, /* Ns */
 220         { ARGSFL_DELIM, NULL }, /* Nx */
 221         { ARGSFL_DELIM, NULL }, /* Ox */
 222         { ARGSFL_DELIM, NULL }, /* Pc */
 223         { ARGSFL_DELIM, NULL }, /* Pf */
 224         { ARGSFL_NONE, NULL }, /* Po */
 225         { ARGSFL_DELIM, NULL }, /* Pq */
 226         { ARGSFL_DELIM, NULL }, /* Qc */
 227         { ARGSFL_DELIM, NULL }, /* Ql */
 228         { ARGSFL_NONE, NULL }, /* Qo */
 229         { ARGSFL_DELIM, NULL }, /* Qq */
 230         { ARGSFL_NONE, NULL }, /* Re */
 231         { ARGSFL_NONE, NULL }, /* Rs */
 232         { ARGSFL_DELIM, NULL }, /* Sc */
 233         { ARGSFL_NONE, NULL }, /* So */
 234         { ARGSFL_DELIM, NULL }, /* Sq */
 235         { ARGSFL_NONE, NULL }, /* Sm */
 236         { ARGSFL_DELIM, NULL }, /* Sx */
 237         { ARGSFL_DELIM, NULL }, /* Sy */
 238         { ARGSFL_DELIM, NULL }, /* Tn */
 239         { ARGSFL_DELIM, NULL }, /* Ux */
 240         { ARGSFL_DELIM, NULL }, /* Xc */
 241         { ARGSFL_NONE, NULL }, /* Xo */
 242         { ARGSFL_NONE, NULL }, /* Fo */
 243         { ARGSFL_NONE, NULL }, /* Fc */
 244         { ARGSFL_NONE, NULL }, /* Oo */
 245         { ARGSFL_DELIM, NULL }, /* Oc */
 246         { ARGSFL_NONE, args_Bk }, /* Bk */
 247         { ARGSFL_NONE, NULL }, /* Ek */
 248         { ARGSFL_NONE, NULL }, /* Bt */
 249         { ARGSFL_NONE, NULL }, /* Hf */
 250         { ARGSFL_NONE, NULL }, /* Fr */
 251         { ARGSFL_NONE, NULL }, /* Ud */
 252         { ARGSFL_NONE, NULL }, /* Lb */
 253         { ARGSFL_NONE, NULL }, /* Lp */
 254         { ARGSFL_DELIM, NULL }, /* Lk */
 255         { ARGSFL_DELIM, NULL }, /* Mt */
 256         { ARGSFL_DELIM, NULL }, /* Brq */
 257         { ARGSFL_NONE, NULL }, /* Bro */
 258         { ARGSFL_DELIM, NULL }, /* Brc */
 259         { ARGSFL_NONE, NULL }, /* %C */
 260         { ARGSFL_NONE, NULL }, /* Es */
 261         { ARGSFL_NONE, NULL }, /* En */
 262         { ARGSFL_NONE, NULL }, /* Dx */
 263         { ARGSFL_NONE, NULL }, /* %Q */
 264         { ARGSFL_NONE, NULL }, /* br */
 265         { ARGSFL_NONE, NULL }, /* sp */
 266         { ARGSFL_NONE, NULL }, /* %U */
 267         { ARGSFL_NONE, NULL }, /* Ta */
 268 };
 269
 270
 271 /*
 272  * Parse an argument from line text.  This comes in the form of -key
 273  * [value0...], which may either have a single mandatory value, at least
 274  * one mandatory value, an optional single value, or no value.
 275  */
 276 enum margverr
 277 mdoc_argv(struct mdoc *m, int line, enum mdoct tok,
 278                 struct mdoc_arg **v, int *pos, char *buf)
 279 {
 280         char             *p, sv;
 281         struct mdoc_argv tmp;
 282         struct mdoc_arg  *arg;
 283         const enum mdocargt *ap;
 284
 285         if ('\0' == buf[*pos])
 286                 return(ARGV_EOLN);
 287         else if (NULL == (ap = mdocargs[tok].argvs))
 288                 return(ARGV_WORD);
 289         else if ('-' != buf[*pos])
 290                 return(ARGV_WORD);
 291
 292         /* Seek to the first unescaped space. */
 293
 294         p = &buf[++(*pos)];
 295
 296         assert(*pos > 0);
 297
 298         for ( ; buf[*pos] ; (*pos)++)
 299                 if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
 300                         break;
 301
 302         /*
 303          * We want to nil-terminate the word to look it up (it's easier
 304          * that way).  But we may not have a flag, in which case we need
 305          * to restore the line as-is.  So keep around the stray byte,
 306          * which we'll reset upon exiting (if necessary).
 307          */
 308
 309         if ('\0' != (sv = buf[*pos]))
 310                 buf[(*pos)++] = '\0';
 311
 312         /*
 313          * Now look up the word as a flag.  Use temporary storage that
 314          * we'll copy into the node's flags, if necessary.
 315          */
 316
 317         memset(&tmp, 0, sizeof(struct mdoc_argv));
 318
 319         tmp.line = line;
 320         tmp.pos = *pos;
 321         tmp.arg = MDOC_ARG_MAX;
 322
 323         while (MDOC_ARG_MAX != (tmp.arg = *ap++))
 324                 if (0 == strcmp(p, mdoc_argnames[tmp.arg]))
 325                         break;
 326
 327         if (MDOC_ARG_MAX == tmp.arg) {
 328                 /*
 329                  * The flag was not found.
 330                  * Restore saved zeroed byte and return as a word.
 331                  */
 332                 if (sv)
 333                         buf[*pos - 1] = sv;
 334                 return(ARGV_WORD);
 335         }
 336
 337         /* Read to the next word (the argument). */
 338
 339         while (buf[*pos] && ' ' == buf[*pos])
 340                 (*pos)++;
 341
 342         switch (argvflags[tmp.arg]) {
 343         case (ARGV_SINGLE):
 344                 if ( ! argv_single(m, line, &tmp, pos, buf))
 345                         return(ARGV_ERROR);
 346                 break;
 347         case (ARGV_MULTI):
 348                 if ( ! argv_multi(m, line, &tmp, pos, buf))
 349                         return(ARGV_ERROR);
 350                 break;
 351         case (ARGV_NONE):
 352                 break;
 353         }
 354
 355         if (NULL == (arg = *v))
 356                 arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
 357
 358         arg->argc++;
 359         arg->argv = mandoc_realloc
 360                 (arg->argv, arg->argc * sizeof(struct mdoc_argv));
 361
 362         memcpy(&arg->argv[(int)arg->argc - 1],
 363                         &tmp, sizeof(struct mdoc_argv));
 364
 365         return(ARGV_ARG);
 366 }
 367
 368 void
 369 mdoc_argv_free(struct mdoc_arg *p)
 370 {
 371         int              i;
 372
 373         if (NULL == p)
 374                 return;
 375
 376         if (p->refcnt) {
 377                 --(p->refcnt);
 378                 if (p->refcnt)
 379                         return;
 380         }
 381         assert(p->argc);
 382
 383         for (i = (int)p->argc - 1; i >= 0; i--)
 384                 argn_free(p, i);
 385
 386         free(p->argv);
 387         free(p);
 388 }
 389
 390 static void
 391 argn_free(struct mdoc_arg *p, int iarg)
 392 {
 393         struct mdoc_argv *arg;
 394         int               j;
 395
 396         arg = &p->argv[iarg];
 397
 398         if (arg->sz && arg->value) {
 399                 for (j = (int)arg->sz - 1; j >= 0; j--)
 400                         free(arg->value[j]);
 401                 free(arg->value);
 402         }
 403
 404         for (--p->argc; iarg < (int)p->argc; iarg++)
 405                 p->argv[iarg] = p->argv[iarg+1];
 406 }
 407
 408 enum margserr
 409 mdoc_zargs(struct mdoc *m, int line, int *pos, char *buf, char **v)
 410 {
 411
 412         return(args(m, line, pos, buf, ARGSFL_NONE, v));
 413 }
 414
 415 enum margserr
 416 mdoc_args(struct mdoc *m, int line, int *pos,
 417                 char *buf, enum mdoct tok, char **v)
 418 {
 419         enum argsflag     fl;
 420         struct mdoc_node *n;
 421
 422         fl = mdocargs[tok].flags;
 423
 424         if (MDOC_It != tok)
 425                 return(args(m, line, pos, buf, fl, v));
 426
 427         /*
 428          * We know that we're in an `It', so it's reasonable to expect
 429          * us to be sitting in a `Bl'.  Someday this may not be the case
 430          * (if we allow random `It's sitting out there), so provide a
 431          * safe fall-back into the default behaviour.
 432          */
 433
 434         for (n = m->last; n; n = n->parent)
 435                 if (MDOC_Bl == n->tok)
 436                         if (LIST_column == n->norm->Bl.type) {
 437                                 fl = ARGSFL_TABSEP;
 438                                 break;
 439                         }
 440
 441         return(args(m, line, pos, buf, fl, v));
 442 }
 443
 444 static enum margserr
 445 args(struct mdoc *m, int line, int *pos,
 446                 char *buf, enum argsflag fl, char **v)
 447 {
 448         char            *p, *pp;
 449         enum margserr    rc;
 450
 451         if ('\0' == buf[*pos]) {
 452                 if (MDOC_PPHRASE & m->flags)
 453                         return(ARGS_EOLN);
 454                 /*
 455                  * If we're not in a partial phrase and the flag for
 456                  * being a phrase literal is still set, the punctuation
 457                  * is unterminated.
 458                  */
 459                 if (MDOC_PHRASELIT & m->flags)
 460                         mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE);
 461
 462                 m->flags &= ~MDOC_PHRASELIT;
 463                 return(ARGS_EOLN);
 464         }
 465
 466         *v = &buf[*pos];
 467
 468         if (ARGSFL_DELIM == fl)
 469                 if (args_checkpunct(buf, *pos))
 470                         return(ARGS_PUNCT);
 471
 472         /*
 473          * First handle TABSEP items, restricted to `Bl -column'.  This
 474          * ignores conventional token parsing and instead uses tabs or
 475          * `Ta' macros to separate phrases.  Phrases are parsed again
 476          * for arguments at a later phase.
 477          */
 478
 479         if (ARGSFL_TABSEP == fl) {
 480                 /* Scan ahead to tab (can't be escaped). */
 481                 p = strchr(*v, '\t');
 482                 pp = NULL;
 483
 484                 /* Scan ahead to unescaped `Ta'. */
 485                 if ( ! (MDOC_PHRASELIT & m->flags))
 486                         for (pp = *v; ; pp++) {
 487                                 if (NULL == (pp = strstr(pp, "Ta")))
 488                                         break;
 489                                 if (pp > *v && ' ' != *(pp - 1))
 490                                         continue;
 491                                 if (' ' == *(pp + 2) || '\0' == *(pp + 2))
 492                                         break;
 493                         }
 494
 495                 /* By default, assume a phrase. */
 496                 rc = ARGS_PHRASE;
 497
 498                 /*
 499                  * Adjust new-buffer position to be beyond delimiter
 500                  * mark (e.g., Ta -> end + 2).
 501                  */
 502                 if (p && pp) {
 503                         *pos += pp < p ? 2 : 1;
 504                         rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
 505                         p = pp < p ? pp : p;
 506                 } else if (p && ! pp) {
 507                         rc = ARGS_PPHRASE;
 508                         *pos += 1;
 509                 } else if (pp && ! p) {
 510                         p = pp;
 511                         *pos += 2;
 512                 } else {
 513                         rc = ARGS_PEND;
 514                         p = strchr(*v, 0);
 515                 }
 516
 517                 /* Whitespace check for eoln case... */
 518                 if ('\0' == *p && ' ' == *(p - 1))
 519                         mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE);
 520
 521                 *pos += (int)(p - *v);
 522
 523                 /* Strip delimiter's preceding whitespace. */
 524                 pp = p - 1;
 525                 while (pp > *v && ' ' == *pp) {
 526                         if (pp > *v && '\\' == *(pp - 1))
 527                                 break;
 528                         pp--;
 529                 }
 530                 *(pp + 1) = 0;
 531
 532                 /* Strip delimiter's proceeding whitespace. */
 533                 for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
 534                         /* Skip ahead. */ ;
 535
 536                 return(rc);
 537         }
 538
 539         /*
 540          * Process a quoted literal.  A quote begins with a double-quote
 541          * and ends with a double-quote NOT preceded by a double-quote.
 542          * Whitespace is NOT involved in literal termination.
 543          */
 544
 545         if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
 546                 if ( ! (MDOC_PHRASELIT & m->flags))
 547                         *v = &buf[++(*pos)];
 548
 549                 if (MDOC_PPHRASE & m->flags)
 550                         m->flags |= MDOC_PHRASELIT;
 551
 552                 for ( ; buf[*pos]; (*pos)++) {
 553                         if ('\"' != buf[*pos])
 554                                 continue;
 555                         if ('\"' != buf[*pos + 1])
 556                                 break;
 557                         (*pos)++;
 558                 }
 559
 560                 if ('\0' == buf[*pos]) {
 561                         if (MDOC_PPHRASE & m->flags)
 562                                 return(ARGS_QWORD);
 563                         mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE);
 564                         return(ARGS_QWORD);
 565                 }
 566
 567                 m->flags &= ~MDOC_PHRASELIT;
 568                 buf[(*pos)++] = '\0';
 569
 570                 if ('\0' == buf[*pos])
 571                         return(ARGS_QWORD);
 572
 573                 while (' ' == buf[*pos])
 574                         (*pos)++;
 575
 576                 if ('\0' == buf[*pos])
 577                         mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE);
 578
 579                 return(ARGS_QWORD);
 580         }
 581
 582         p = &buf[*pos];
 583         *v = mandoc_getarg(m->parse, &p, line, pos);
 584
 585         return(ARGS_WORD);
 586 }
 587
 588 /*
 589  * Check if the string consists only of space-separated closing
 590  * delimiters.  This is a bit of a dance: the first must be a close
 591  * delimiter, but it may be followed by middle delimiters.  Arbitrary
 592  * whitespace may separate these tokens.
 593  */
 594 static int
 595 args_checkpunct(const char *buf, int i)
 596 {
 597         int              j;
 598         char             dbuf[DELIMSZ];
 599         enum mdelim      d;
 600
 601         /* First token must be a close-delimiter. */
 602
 603         for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++)
 604                 dbuf[j] = buf[i];
 605
 606         if (DELIMSZ == j)
 607                 return(0);
 608
 609         dbuf[j] = '\0';
 610         if (DELIM_CLOSE != mdoc_isdelim(dbuf))
 611                 return(0);
 612
 613         while (' ' == buf[i])
 614                 i++;
 615
 616         /* Remaining must NOT be open/none. */
 617
 618         while (buf[i]) {
 619                 j = 0;
 620                 while (buf[i] && ' ' != buf[i] && j < DELIMSZ)
 621                         dbuf[j++] = buf[i++];
 622
 623                 if (DELIMSZ == j)
 624                         return(0);
 625
 626                 dbuf[j] = '\0';
 627                 d = mdoc_isdelim(dbuf);
 628                 if (DELIM_NONE == d || DELIM_OPEN == d)
 629                         return(0);
 630
 631                 while (' ' == buf[i])
 632                         i++;
 633         }
 634
 635         return('\0' == buf[i]);
 636 }
 637
 638 static int
 639 argv_multi(struct mdoc *m, int line,
 640                 struct mdoc_argv *v, int *pos, char *buf)
 641 {
 642         enum margserr    ac;
 643         char            *p;
 644
 645         for (v->sz = 0; ; v->sz++) {
 646                 if ('-' == buf[*pos])
 647                         break;
 648                 ac = args(m, line, pos, buf, ARGSFL_NONE, &p);
 649                 if (ARGS_ERROR == ac)
 650                         return(0);
 651                 else if (ARGS_EOLN == ac)
 652                         break;
 653
 654                 if (0 == v->sz % MULTI_STEP)
 655                         v->value = mandoc_realloc(v->value,
 656                                 (v->sz + MULTI_STEP) * sizeof(char *));
 657
 658                 v->value[(int)v->sz] = mandoc_strdup(p);
 659         }
 660
 661         return(1);
 662 }
 663
 664 static int
 665 argv_single(struct mdoc *m, int line,
 666                 struct mdoc_argv *v, int *pos, char *buf)
 667 {
 668         enum margserr    ac;
 669         char            *p;
 670
 671         ac = args(m, line, pos, buf, ARGSFL_NONE, &p);
 672         if (ARGS_ERROR == ac)
 673                 return(0);
 674         if (ARGS_EOLN == ac)
 675                 return(1);
 676
 677         v->sz = 1;
 678         v->value = mandoc_malloc(sizeof(char *));
 679         v->value[0] = mandoc_strdup(p);
 680
 681         return(1);
 682 }