mdoc_validate.c

   1 /*      $Id: mdoc_validate.c,v 1.136 2010/12/05 15:49:37 kristaps Exp $ */
   2 /*
   3  * Copyright (c) 2008, 2009, 2010 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 #ifndef OSNAME
  22 #include <sys/utsname.h>
  23 #endif
  24
  25 #include <sys/types.h>
  26
  27 #include <assert.h>
  28 #include <ctype.h>
  29 #include <limits.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <time.h>
  34
  35 #include "mandoc.h"
  36 #include "libmdoc.h"
  37 #include "libmandoc.h"
  38
  39 /* FIXME: .Bl -diag can't have non-text children in HEAD. */
  40
  41 #define PRE_ARGS  struct mdoc *mdoc, struct mdoc_node *n
  42 #define POST_ARGS struct mdoc *mdoc
  43
  44 #define NUMSIZ    32
  45 #define DATESIZE  32
  46
  47 enum    check_ineq {
  48         CHECK_LT,
  49         CHECK_GT,
  50         CHECK_EQ
  51 };
  52
  53 enum    check_lvl {
  54         CHECK_WARN,
  55         CHECK_ERROR,
  56         CHECK_FATAL
  57 };
  58
  59 typedef int     (*v_pre)(PRE_ARGS);
  60 typedef int     (*v_post)(POST_ARGS);
  61
  62 struct  valids {
  63         v_pre   *pre;
  64         v_post  *post;
  65 };
  66
  67 static  int      check_count(struct mdoc *, enum mdoc_type,
  68                         enum check_lvl, enum check_ineq, int);
  69 static  int      check_parent(PRE_ARGS, enum mdoct, enum mdoc_type);
  70 static  void     check_text(struct mdoc *, int, int, char *);
  71 static  void     check_argv(struct mdoc *,
  72                         struct mdoc_node *, struct mdoc_argv *);
  73 static  void     check_args(struct mdoc *, struct mdoc_node *);
  74
  75 static  int      concat(struct mdoc *, char *,
  76                         const struct mdoc_node *, size_t);
  77
  78 static  int      ebool(POST_ARGS);
  79 static  int      berr_ge1(POST_ARGS);
  80 static  int      bwarn_ge1(POST_ARGS);
  81 static  int      eerr_eq0(POST_ARGS);
  82 static  int      eerr_eq1(POST_ARGS);
  83 static  int      eerr_ge1(POST_ARGS);
  84 static  int      eerr_le1(POST_ARGS);
  85 static  int      ewarn_eq0(POST_ARGS);
  86 static  int      ewarn_ge1(POST_ARGS);
  87 static  int      herr_eq0(POST_ARGS);
  88 static  int      herr_ge1(POST_ARGS);
  89 static  int      hwarn_eq0(POST_ARGS);
  90 static  int      hwarn_eq1(POST_ARGS);
  91 static  int      hwarn_le1(POST_ARGS);
  92
  93 static  int      post_an(POST_ARGS);
  94 static  int      post_at(POST_ARGS);
  95 static  int      post_bf(POST_ARGS);
  96 static  int      post_bl(POST_ARGS);
  97 static  int      post_bl_block(POST_ARGS);
  98 static  int      post_bl_block_width(POST_ARGS);
  99 static  int      post_bl_block_tag(POST_ARGS);
 100 static  int      post_bl_head(POST_ARGS);
 101 static  int      post_dd(POST_ARGS);
 102 static  int      post_dt(POST_ARGS);
 103 static  int      post_defaults(POST_ARGS);
 104 static  int      post_literal(POST_ARGS);
 105 static  int      post_eoln(POST_ARGS);
 106 static  int      post_it(POST_ARGS);
 107 static  int      post_lb(POST_ARGS);
 108 static  int      post_nm(POST_ARGS);
 109 static  int      post_os(POST_ARGS);
 110 static  int      post_prol(POST_ARGS);
 111 static  int      post_root(POST_ARGS);
 112 static  int      post_rs(POST_ARGS);
 113 static  int      post_sh(POST_ARGS);
 114 static  int      post_sh_body(POST_ARGS);
 115 static  int      post_sh_head(POST_ARGS);
 116 static  int      post_st(POST_ARGS);
 117 static  int      post_std(POST_ARGS);
 118 static  int      post_vt(POST_ARGS);
 119 static  int      pre_an(PRE_ARGS);
 120 static  int      pre_bd(PRE_ARGS);
 121 static  int      pre_bl(PRE_ARGS);
 122 static  int      pre_dd(PRE_ARGS);
 123 static  int      pre_display(PRE_ARGS);
 124 static  int      pre_dt(PRE_ARGS);
 125 static  int      pre_it(PRE_ARGS);
 126 static  int      pre_literal(PRE_ARGS);
 127 static  int      pre_os(PRE_ARGS);
 128 static  int      pre_par(PRE_ARGS);
 129 static  int      pre_sh(PRE_ARGS);
 130 static  int      pre_ss(PRE_ARGS);
 131 static  int      pre_std(PRE_ARGS);
 132
 133 static  v_post   posts_an[] = { post_an, NULL };
 134 static  v_post   posts_at[] = { post_at, post_defaults, NULL };
 135 static  v_post   posts_bd[] = { post_literal, hwarn_eq0, bwarn_ge1, NULL };
 136 static  v_post   posts_bf[] = { hwarn_le1, post_bf, NULL };
 137 static  v_post   posts_bk[] = { hwarn_eq0, bwarn_ge1, NULL };
 138 static  v_post   posts_bl[] = { bwarn_ge1, post_bl, NULL };
 139 static  v_post   posts_bool[] = { eerr_eq1, ebool, NULL };
 140 static  v_post   posts_eoln[] = { post_eoln, NULL };
 141 static  v_post   posts_defaults[] = { post_defaults, NULL };
 142 static  v_post   posts_dd[] = { ewarn_ge1, post_dd, post_prol, NULL };
 143 static  v_post   posts_dl[] = { post_literal, bwarn_ge1, herr_eq0, NULL };
 144 static  v_post   posts_dt[] = { post_dt, post_prol, NULL };
 145 static  v_post   posts_fo[] = { hwarn_eq1, bwarn_ge1, NULL };
 146 static  v_post   posts_it[] = { post_it, NULL };
 147 static  v_post   posts_lb[] = { eerr_eq1, post_lb, NULL };
 148 static  v_post   posts_nd[] = { berr_ge1, NULL };
 149 static  v_post   posts_nm[] = { post_nm, NULL };
 150 static  v_post   posts_notext[] = { ewarn_eq0, NULL };
 151 static  v_post   posts_os[] = { post_os, post_prol, NULL };
 152 static  v_post   posts_rs[] = { berr_ge1, herr_eq0, post_rs, NULL };
 153 static  v_post   posts_sh[] = { herr_ge1, bwarn_ge1, post_sh, NULL };
 154 static  v_post   posts_sp[] = { eerr_le1, NULL };
 155 static  v_post   posts_ss[] = { herr_ge1, NULL };
 156 static  v_post   posts_st[] = { eerr_eq1, post_st, NULL };
 157 static  v_post   posts_std[] = { post_std, NULL };
 158 static  v_post   posts_text[] = { eerr_ge1, NULL };
 159 static  v_post   posts_text1[] = { eerr_eq1, NULL };
 160 static  v_post   posts_vt[] = { post_vt, NULL };
 161 static  v_post   posts_wline[] = { bwarn_ge1, herr_eq0, NULL };
 162 static  v_post   posts_wtext[] = { ewarn_ge1, NULL };
 163 static  v_pre    pres_an[] = { pre_an, NULL };
 164 static  v_pre    pres_bd[] = { pre_display, pre_bd, pre_literal, pre_par, NULL };
 165 static  v_pre    pres_bl[] = { pre_bl, pre_par, NULL };
 166 static  v_pre    pres_d1[] = { pre_display, NULL };
 167 static  v_pre    pres_dl[] = { pre_literal, pre_display, NULL };
 168 static  v_pre    pres_dd[] = { pre_dd, NULL };
 169 static  v_pre    pres_dt[] = { pre_dt, NULL };
 170 static  v_pre    pres_er[] = { NULL, NULL };
 171 static  v_pre    pres_fd[] = { NULL, NULL };
 172 static  v_pre    pres_it[] = { pre_it, NULL };
 173 static  v_pre    pres_os[] = { pre_os, NULL };
 174 static  v_pre    pres_pp[] = { pre_par, NULL };
 175 static  v_pre    pres_sh[] = { pre_sh, NULL };
 176 static  v_pre    pres_ss[] = { pre_ss, NULL };
 177 static  v_pre    pres_std[] = { pre_std, NULL };
 178
 179 const   struct valids mdoc_valids[MDOC_MAX] = {
 180         { NULL, NULL },                         /* Ap */
 181         { pres_dd, posts_dd },                  /* Dd */
 182         { pres_dt, posts_dt },                  /* Dt */
 183         { pres_os, posts_os },                  /* Os */
 184         { pres_sh, posts_sh },                  /* Sh */
 185         { pres_ss, posts_ss },                  /* Ss */
 186         { pres_pp, posts_notext },              /* Pp */
 187         { pres_d1, posts_wline },               /* D1 */
 188         { pres_dl, posts_dl },                  /* Dl */
 189         { pres_bd, posts_bd },                  /* Bd */
 190         { NULL, NULL },                         /* Ed */
 191         { pres_bl, posts_bl },                  /* Bl */
 192         { NULL, NULL },                         /* El */
 193         { pres_it, posts_it },                  /* It */
 194         { NULL, posts_text },                   /* Ad */
 195         { pres_an, posts_an },                  /* An */
 196         { NULL, posts_defaults },               /* Ar */
 197         { NULL, posts_text },                   /* Cd */
 198         { NULL, NULL },                         /* Cm */
 199         { NULL, NULL },                         /* Dv */
 200         { pres_er, posts_text },                /* Er */
 201         { NULL, NULL },                         /* Ev */
 202         { pres_std, posts_std },                /* Ex */
 203         { NULL, NULL },                         /* Fa */
 204         { pres_fd, posts_wtext },               /* Fd */
 205         { NULL, NULL },                         /* Fl */
 206         { NULL, posts_text },                   /* Fn */
 207         { NULL, posts_wtext },                  /* Ft */
 208         { NULL, posts_text },                   /* Ic */
 209         { NULL, posts_text1 },                  /* In */
 210         { NULL, posts_defaults },               /* Li */
 211         { NULL, posts_nd },                     /* Nd */
 212         { NULL, posts_nm },                     /* Nm */
 213         { NULL, posts_wline },                  /* Op */
 214         { NULL, NULL },                         /* Ot */
 215         { NULL, posts_defaults },               /* Pa */
 216         { pres_std, posts_std },                /* Rv */
 217         { NULL, posts_st },                     /* St */
 218         { NULL, NULL },                         /* Va */
 219         { NULL, posts_vt },                     /* Vt */
 220         { NULL, posts_wtext },                  /* Xr */
 221         { NULL, posts_text },                   /* %A */
 222         { NULL, posts_text },                   /* %B */ /* FIXME: can be used outside Rs/Re. */
 223         { NULL, posts_text },                   /* %D */ /* FIXME: check date with mandoc_a2time(). */
 224         { NULL, posts_text },                   /* %I */
 225         { NULL, posts_text },                   /* %J */
 226         { NULL, posts_text },                   /* %N */
 227         { NULL, posts_text },                   /* %O */
 228         { NULL, posts_text },                   /* %P */
 229         { NULL, posts_text },                   /* %R */
 230         { NULL, posts_text },                   /* %T */ /* FIXME: can be used outside Rs/Re. */
 231         { NULL, posts_text },                   /* %V */
 232         { NULL, NULL },                         /* Ac */
 233         { NULL, NULL },                         /* Ao */
 234         { NULL, posts_wline },                  /* Aq */
 235         { NULL, posts_at },                     /* At */
 236         { NULL, NULL },                         /* Bc */
 237         { NULL, posts_bf },                     /* Bf */
 238         { NULL, NULL },                         /* Bo */
 239         { NULL, posts_wline },                  /* Bq */
 240         { NULL, NULL },                         /* Bsx */
 241         { NULL, NULL },                         /* Bx */
 242         { NULL, posts_bool },                   /* Db */
 243         { NULL, NULL },                         /* Dc */
 244         { NULL, NULL },                         /* Do */
 245         { NULL, posts_wline },                  /* Dq */
 246         { NULL, NULL },                         /* Ec */
 247         { NULL, NULL },                         /* Ef */
 248         { NULL, NULL },                         /* Em */
 249         { NULL, NULL },                         /* Eo */
 250         { NULL, NULL },                         /* Fx */
 251         { NULL, posts_text },                   /* Ms */
 252         { NULL, posts_notext },                 /* No */
 253         { NULL, posts_notext },                 /* Ns */
 254         { NULL, NULL },                         /* Nx */
 255         { NULL, NULL },                         /* Ox */
 256         { NULL, NULL },                         /* Pc */
 257         { NULL, posts_text1 },                  /* Pf */
 258         { NULL, NULL },                         /* Po */
 259         { NULL, posts_wline },                  /* Pq */
 260         { NULL, NULL },                         /* Qc */
 261         { NULL, posts_wline },                  /* Ql */
 262         { NULL, NULL },                         /* Qo */
 263         { NULL, posts_wline },                  /* Qq */
 264         { NULL, NULL },                         /* Re */
 265         { NULL, posts_rs },                     /* Rs */
 266         { NULL, NULL },                         /* Sc */
 267         { NULL, NULL },                         /* So */
 268         { NULL, posts_wline },                  /* Sq */
 269         { NULL, posts_bool },                   /* Sm */
 270         { NULL, posts_text },                   /* Sx */
 271         { NULL, posts_text },                   /* Sy */
 272         { NULL, posts_text },                   /* Tn */
 273         { NULL, NULL },                         /* Ux */
 274         { NULL, NULL },                         /* Xc */
 275         { NULL, NULL },                         /* Xo */
 276         { NULL, posts_fo },                     /* Fo */
 277         { NULL, NULL },                         /* Fc */
 278         { NULL, NULL },                         /* Oo */
 279         { NULL, NULL },                         /* Oc */
 280         { NULL, posts_bk },                     /* Bk */
 281         { NULL, NULL },                         /* Ek */
 282         { NULL, posts_eoln },                   /* Bt */
 283         { NULL, NULL },                         /* Hf */
 284         { NULL, NULL },                         /* Fr */
 285         { NULL, posts_eoln },                   /* Ud */
 286         { NULL, posts_lb },                     /* Lb */
 287         { NULL, posts_notext },                 /* Lp */
 288         { NULL, posts_text },                   /* Lk */
 289         { NULL, posts_defaults },               /* Mt */
 290         { NULL, posts_wline },                  /* Brq */
 291         { NULL, NULL },                         /* Bro */
 292         { NULL, NULL },                         /* Brc */
 293         { NULL, posts_text },                   /* %C */
 294         { NULL, NULL },                         /* Es */
 295         { NULL, NULL },                         /* En */
 296         { NULL, NULL },                         /* Dx */
 297         { NULL, posts_text },                   /* %Q */
 298         { NULL, posts_notext },                 /* br */
 299         { pres_pp, posts_sp },                  /* sp */
 300         { NULL, posts_text1 },                  /* %U */
 301         { NULL, NULL },                         /* Ta */
 302 };
 303
 304 #define RSORD_MAX 14 /* Number of `Rs' blocks. */
 305
 306 static  const enum mdoct rsord[RSORD_MAX] = {
 307         MDOC__A,
 308         MDOC__T,
 309         MDOC__B,
 310         MDOC__I,
 311         MDOC__J,
 312         MDOC__R,
 313         MDOC__N,
 314         MDOC__V,
 315         MDOC__P,
 316         MDOC__Q,
 317         MDOC__D,
 318         MDOC__O,
 319         MDOC__C,
 320         MDOC__U
 321 };
 322
 323
 324 int
 325 mdoc_valid_pre(struct mdoc *mdoc, struct mdoc_node *n)
 326 {
 327         v_pre           *p;
 328         int              line, pos;
 329         char            *tp;
 330
 331         if (MDOC_TEXT == n->type) {
 332                 tp = n->string;
 333                 line = n->line;
 334                 pos = n->pos;
 335                 check_text(mdoc, line, pos, tp);
 336                 return(1);
 337         }
 338
 339         check_args(mdoc, n);
 340
 341         if (NULL == mdoc_valids[n->tok].pre)
 342                 return(1);
 343         for (p = mdoc_valids[n->tok].pre; *p; p++)
 344                 if ( ! (*p)(mdoc, n))
 345                         return(0);
 346         return(1);
 347 }
 348
 349
 350 int
 351 mdoc_valid_post(struct mdoc *mdoc)
 352 {
 353         v_post          *p;
 354
 355         if (MDOC_VALID & mdoc->last->flags)
 356                 return(1);
 357         mdoc->last->flags |= MDOC_VALID;
 358
 359         if (MDOC_TEXT == mdoc->last->type)
 360                 return(1);
 361         if (MDOC_ROOT == mdoc->last->type)
 362                 return(post_root(mdoc));
 363
 364         if (NULL == mdoc_valids[mdoc->last->tok].post)
 365                 return(1);
 366         for (p = mdoc_valids[mdoc->last->tok].post; *p; p++)
 367                 if ( ! (*p)(mdoc))
 368                         return(0);
 369
 370         return(1);
 371 }
 372
 373 static int
 374 check_count(struct mdoc *m, enum mdoc_type type,
 375                 enum check_lvl lvl, enum check_ineq ineq, int val)
 376 {
 377         const char      *p;
 378
 379         if (m->last->type != type)
 380                 return(1);
 381
 382         switch (ineq) {
 383         case (CHECK_LT):
 384                 p = "less than ";
 385                 if (m->last->nchild < val)
 386                         return(1);
 387                 break;
 388         case (CHECK_GT):
 389                 p = "greater than ";
 390                 if (m->last->nchild > val)
 391                         return(1);
 392                 break;
 393         case (CHECK_EQ):
 394                 p = "";
 395                 if (val == m->last->nchild)
 396                         return(1);
 397                 break;
 398         default:
 399                 abort();
 400                 /* NOTREACHED */
 401         }
 402
 403         if (CHECK_WARN == lvl) {
 404                 return(mdoc_vmsg(m, MANDOCERR_ARGCOUNT,
 405                                 m->last->line, m->last->pos,
 406                                 "want %s%d children (have %d)",
 407                                 p, val, m->last->nchild));
 408         }
 409
 410         /* FIXME: THIS IS THE SAME AS THE ABOVE. */
 411
 412         return(mdoc_vmsg(m, MANDOCERR_ARGCOUNT,
 413                         m->last->line, m->last->pos,
 414                         "require %s%d children (have %d)",
 415                         p, val, m->last->nchild));
 416 }
 417
 418 static int
 419 berr_ge1(POST_ARGS)
 420 {
 421
 422         return(check_count(mdoc, MDOC_BODY, CHECK_FATAL, CHECK_GT, 0));
 423 }
 424
 425 static int
 426 bwarn_ge1(POST_ARGS)
 427 {
 428         return(check_count(mdoc, MDOC_BODY, CHECK_WARN, CHECK_GT, 0));
 429 }
 430
 431 static int
 432 eerr_eq0(POST_ARGS)
 433 {
 434         return(check_count(mdoc, MDOC_ELEM, CHECK_FATAL, CHECK_EQ, 0));
 435 }
 436
 437 static int
 438 eerr_eq1(POST_ARGS)
 439 {
 440         return(check_count(mdoc, MDOC_ELEM, CHECK_FATAL, CHECK_EQ, 1));
 441 }
 442
 443 static int
 444 eerr_ge1(POST_ARGS)
 445 {
 446         return(check_count(mdoc, MDOC_ELEM, CHECK_FATAL, CHECK_GT, 0));
 447 }
 448
 449 static int
 450 eerr_le1(POST_ARGS)
 451 {
 452         return(check_count(mdoc, MDOC_ELEM, CHECK_FATAL, CHECK_LT, 2));
 453 }
 454
 455 static int
 456 ewarn_eq0(POST_ARGS)
 457 {
 458         return(check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_EQ, 0));
 459 }
 460
 461 static int
 462 ewarn_ge1(POST_ARGS)
 463 {
 464         return(check_count(mdoc, MDOC_ELEM, CHECK_WARN, CHECK_GT, 0));
 465 }
 466
 467 static int
 468 herr_eq0(POST_ARGS)
 469 {
 470         return(check_count(mdoc, MDOC_HEAD, CHECK_FATAL, CHECK_EQ, 0));
 471 }
 472
 473 static int
 474 herr_ge1(POST_ARGS)
 475 {
 476         return(check_count(mdoc, MDOC_HEAD, CHECK_FATAL, CHECK_GT, 0));
 477 }
 478
 479 static int
 480 hwarn_eq0(POST_ARGS)
 481 {
 482         return(check_count(mdoc, MDOC_HEAD, CHECK_WARN, CHECK_EQ, 0));
 483 }
 484
 485 static int
 486 hwarn_eq1(POST_ARGS)
 487 {
 488         return(check_count(mdoc, MDOC_HEAD, CHECK_WARN, CHECK_EQ, 1));
 489 }
 490
 491 static int
 492 hwarn_le1(POST_ARGS)
 493 {
 494         return(check_count(mdoc, MDOC_HEAD, CHECK_WARN, CHECK_LT, 2));
 495 }
 496
 497 static void
 498 check_args(struct mdoc *m, struct mdoc_node *n)
 499 {
 500         int              i;
 501
 502         if (NULL == n->args)
 503                 return;
 504
 505         assert(n->args->argc);
 506         for (i = 0; i < (int)n->args->argc; i++)
 507                 check_argv(m, n, &n->args->argv[i]);
 508 }
 509
 510 static void
 511 check_argv(struct mdoc *m, struct mdoc_node *n, struct mdoc_argv *v)
 512 {
 513         int              i;
 514
 515         for (i = 0; i < (int)v->sz; i++)
 516                 check_text(m, v->line, v->pos, v->value[i]);
 517
 518         /* FIXME: move to post_std(). */
 519
 520         if (MDOC_Std == v->arg)
 521                 if ( ! (v->sz || m->meta.name))
 522                         mdoc_nmsg(m, n, MANDOCERR_NONAME);
 523 }
 524
 525 static void
 526 check_text(struct mdoc *m, int ln, int pos, char *p)
 527 {
 528         int              c;
 529         size_t           sz;
 530
 531         for ( ; *p; p++, pos++) {
 532                 sz = strcspn(p, "\t\\");
 533                 p += (int)sz;
 534
 535                 if ('\0' == *p)
 536                         break;
 537
 538                 pos += (int)sz;
 539
 540                 if ('\t' == *p) {
 541                         if ( ! (MDOC_LITERAL & m->flags))
 542                                 mdoc_pmsg(m, ln, pos, MANDOCERR_BADTAB);
 543                         continue;
 544                 }
 545
 546                 if (0 == (c = mandoc_special(p))) {
 547                         mdoc_pmsg(m, ln, pos, MANDOCERR_BADESCAPE);
 548                         continue;
 549                 }
 550
 551                 p += c - 1;
 552                 pos += c - 1;
 553         }
 554 }
 555
 556 static int
 557 check_parent(PRE_ARGS, enum mdoct tok, enum mdoc_type t)
 558 {
 559
 560         assert(n->parent);
 561         if ((MDOC_ROOT == t || tok == n->parent->tok) &&
 562                         (t == n->parent->type))
 563                 return(1);
 564
 565         mdoc_vmsg(mdoc, MANDOCERR_SYNTCHILD,
 566                                 n->line, n->pos, "want parent %s",
 567                                 MDOC_ROOT == t ? "<root>" :
 568                                         mdoc_macronames[tok]);
 569         return(0);
 570 }
 571
 572
 573 static int
 574 pre_display(PRE_ARGS)
 575 {
 576         struct mdoc_node *node;
 577
 578         if (MDOC_BLOCK != n->type)
 579                 return(1);
 580
 581         for (node = mdoc->last->parent; node; node = node->parent)
 582                 if (MDOC_BLOCK == node->type)
 583                         if (MDOC_Bd == node->tok)
 584                                 break;
 585
 586         if (node)
 587                 mdoc_nmsg(mdoc, n, MANDOCERR_NESTEDDISP);
 588
 589         return(1);
 590 }
 591
 592
 593 static int
 594 pre_bl(PRE_ARGS)
 595 {
 596         int               i, comp, dup;
 597         const char       *offs, *width;
 598         enum mdoc_list    lt;
 599         struct mdoc_node *np;
 600
 601         if (MDOC_BLOCK != n->type) {
 602                 if (ENDBODY_NOT != n->end) {
 603                         assert(n->pending);
 604                         np = n->pending->parent;
 605                 } else
 606                         np = n->parent;
 607
 608                 assert(np);
 609                 assert(MDOC_BLOCK == np->type);
 610                 assert(MDOC_Bl == np->tok);
 611                 assert(np->data.Bl);
 612                 n->data.Bl = np->data.Bl;
 613                 return(1);
 614         }
 615
 616         /*
 617          * First figure out which kind of list to use: bind ourselves to
 618          * the first mentioned list type and warn about any remaining
 619          * ones.  If we find no list type, we default to LIST_item.
 620          */
 621
 622         assert(NULL == n->data.Bl);
 623         n->data.Bl = mandoc_calloc(1, sizeof(struct mdoc_bl));
 624
 625         /* LINTED */
 626         for (i = 0; n->args && i < (int)n->args->argc; i++) {
 627                 lt = LIST__NONE;
 628                 dup = comp = 0;
 629                 width = offs = NULL;
 630                 switch (n->args->argv[i].arg) {
 631                 /* Set list types. */
 632                 case (MDOC_Bullet):
 633                         lt = LIST_bullet;
 634                         break;
 635                 case (MDOC_Dash):
 636                         lt = LIST_dash;
 637                         break;
 638                 case (MDOC_Enum):
 639                         lt = LIST_enum;
 640                         break;
 641                 case (MDOC_Hyphen):
 642                         lt = LIST_hyphen;
 643                         break;
 644                 case (MDOC_Item):
 645                         lt = LIST_item;
 646                         break;
 647                 case (MDOC_Tag):
 648                         lt = LIST_tag;
 649                         break;
 650                 case (MDOC_Diag):
 651                         lt = LIST_diag;
 652                         break;
 653                 case (MDOC_Hang):
 654                         lt = LIST_hang;
 655                         break;
 656                 case (MDOC_Ohang):
 657                         lt = LIST_ohang;
 658                         break;
 659                 case (MDOC_Inset):
 660                         lt = LIST_inset;
 661                         break;
 662                 case (MDOC_Column):
 663                         lt = LIST_column;
 664                         break;
 665                 /* Set list arguments. */
 666                 case (MDOC_Compact):
 667                         dup = n->data.Bl->comp;
 668                         comp = 1;
 669                         break;
 670                 case (MDOC_Width):
 671                         dup = (NULL != n->data.Bl->width);
 672                         width = n->args->argv[i].value[0];
 673                         break;
 674                 case (MDOC_Offset):
 675                         /* NB: this can be empty! */
 676                         if (n->args->argv[i].sz) {
 677                                 offs = n->args->argv[i].value[0];
 678                                 dup = (NULL != n->data.Bl->offs);
 679                                 break;
 680                         }
 681                         mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
 682                         break;
 683                 default:
 684                         continue;
 685                 }
 686
 687                 /* Check: duplicate auxiliary arguments. */
 688
 689                 if (dup)
 690                         mdoc_nmsg(mdoc, n, MANDOCERR_ARGVREP);
 691
 692                 if (comp && ! dup)
 693                         n->data.Bl->comp = comp;
 694                 if (offs && ! dup)
 695                         n->data.Bl->offs = offs;
 696                 if (width && ! dup)
 697                         n->data.Bl->width = width;
 698
 699                 /* Check: multiple list types. */
 700
 701                 if (LIST__NONE != lt && n->data.Bl->type != LIST__NONE)
 702                         mdoc_nmsg(mdoc, n, MANDOCERR_LISTREP);
 703
 704                 /* Assign list type. */
 705
 706                 if (LIST__NONE != lt && n->data.Bl->type == LIST__NONE) {
 707                         n->data.Bl->type = lt;
 708                         /* Set column information, too. */
 709                         if (LIST_column == lt) {
 710                                 n->data.Bl->ncols =
 711                                         n->args->argv[i].sz;
 712                                 n->data.Bl->cols = (const char **)
 713                                         n->args->argv[i].value;
 714                         }
 715                 }
 716
 717                 /* The list type should come first. */
 718
 719                 if (n->data.Bl->type == LIST__NONE)
 720                         if (n->data.Bl->width ||
 721                                         n->data.Bl->offs ||
 722                                         n->data.Bl->comp)
 723                                 mdoc_nmsg(mdoc, n, MANDOCERR_LISTFIRST);
 724
 725                 continue;
 726         }
 727
 728         /* Allow lists to default to LIST_item. */
 729
 730         if (LIST__NONE == n->data.Bl->type) {
 731                 mdoc_nmsg(mdoc, n, MANDOCERR_LISTTYPE);
 732                 n->data.Bl->type = LIST_item;
 733         }
 734
 735         /*
 736          * Validate the width field.  Some list types don't need width
 737          * types and should be warned about them.  Others should have it
 738          * and must also be warned.
 739          */
 740
 741         switch (n->data.Bl->type) {
 742         case (LIST_tag):
 743                 if (n->data.Bl->width)
 744                         break;
 745                 mdoc_nmsg(mdoc, n, MANDOCERR_NOWIDTHARG);
 746                 break;
 747         case (LIST_column):
 748                 /* FALLTHROUGH */
 749         case (LIST_diag):
 750                 /* FALLTHROUGH */
 751         case (LIST_ohang):
 752                 /* FALLTHROUGH */
 753         case (LIST_inset):
 754                 /* FALLTHROUGH */
 755         case (LIST_item):
 756                 if (NULL == n->data.Bl->width)
 757                         break;
 758                 mdoc_nmsg(mdoc, n, MANDOCERR_WIDTHARG);
 759                 break;
 760         default:
 761                 break;
 762         }
 763
 764         return(1);
 765 }
 766
 767
 768 static int
 769 pre_bd(PRE_ARGS)
 770 {
 771         int               i, dup, comp;
 772         enum mdoc_disp    dt;
 773         const char       *offs;
 774         struct mdoc_node *np;
 775
 776         if (MDOC_BLOCK != n->type) {
 777                 if (ENDBODY_NOT != n->end) {
 778                         assert(n->pending);
 779                         np = n->pending->parent;
 780                 } else
 781                         np = n->parent;
 782
 783                 assert(np);
 784                 assert(MDOC_BLOCK == np->type);
 785                 assert(MDOC_Bd == np->tok);
 786                 assert(np->data.Bd);
 787                 n->data.Bd = np->data.Bd;
 788                 return(1);
 789         }
 790
 791         assert(NULL == n->data.Bd);
 792         n->data.Bd = mandoc_calloc(1, sizeof(struct mdoc_bd));
 793
 794         /* LINTED */
 795         for (i = 0; n->args && i < (int)n->args->argc; i++) {
 796                 dt = DISP__NONE;
 797                 dup = comp = 0;
 798                 offs = NULL;
 799
 800                 switch (n->args->argv[i].arg) {
 801                 case (MDOC_Centred):
 802                         dt = DISP_centred;
 803                         break;
 804                 case (MDOC_Ragged):
 805                         dt = DISP_ragged;
 806                         break;
 807                 case (MDOC_Unfilled):
 808                         dt = DISP_unfilled;
 809                         break;
 810                 case (MDOC_Filled):
 811                         dt = DISP_filled;
 812                         break;
 813                 case (MDOC_Literal):
 814                         dt = DISP_literal;
 815                         break;
 816                 case (MDOC_File):
 817                         mdoc_nmsg(mdoc, n, MANDOCERR_BADDISP);
 818                         return(0);
 819                 case (MDOC_Offset):
 820                         /* NB: this can be empty! */
 821                         if (n->args->argv[i].sz) {
 822                                 offs = n->args->argv[i].value[0];
 823                                 dup = (NULL != n->data.Bd->offs);
 824                                 break;
 825                         }
 826                         mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
 827                         break;
 828                 case (MDOC_Compact):
 829                         comp = 1;
 830                         dup = n->data.Bd->comp;
 831                         break;
 832                 default:
 833                         abort();
 834                         /* NOTREACHED */
 835                 }
 836
 837                 /* Check whether we have duplicates. */
 838
 839                 if (dup)
 840                         mdoc_nmsg(mdoc, n, MANDOCERR_ARGVREP);
 841
 842                 /* Make our auxiliary assignments. */
 843
 844                 if (offs && ! dup)
 845                         n->data.Bd->offs = offs;
 846                 if (comp && ! dup)
 847                         n->data.Bd->comp = comp;
 848
 849                 /* Check whether a type has already been assigned. */
 850
 851                 if (DISP__NONE != dt && n->data.Bd->type != DISP__NONE)
 852                         mdoc_nmsg(mdoc, n, MANDOCERR_DISPREP);
 853
 854                 /* Make our type assignment. */
 855
 856                 if (DISP__NONE != dt && n->data.Bd->type == DISP__NONE)
 857                         n->data.Bd->type = dt;
 858         }
 859
 860         if (DISP__NONE == n->data.Bd->type) {
 861                 mdoc_nmsg(mdoc, n, MANDOCERR_DISPTYPE);
 862                 n->data.Bd->type = DISP_ragged;
 863         }
 864
 865         return(1);
 866 }
 867
 868
 869 static int
 870 pre_ss(PRE_ARGS)
 871 {
 872
 873         if (MDOC_BLOCK != n->type)
 874                 return(1);
 875         return(check_parent(mdoc, n, MDOC_Sh, MDOC_BODY));
 876 }
 877
 878
 879 static int
 880 pre_sh(PRE_ARGS)
 881 {
 882
 883         if (MDOC_BLOCK != n->type)
 884                 return(1);
 885
 886         mdoc->regs->regs[(int)REG_nS].set = 0;
 887         return(check_parent(mdoc, n, MDOC_MAX, MDOC_ROOT));
 888 }
 889
 890
 891 static int
 892 pre_it(PRE_ARGS)
 893 {
 894
 895         if (MDOC_BLOCK != n->type)
 896                 return(1);
 897
 898         /*
 899          * FIXME: this can probably be lifted if we make the It into
 900          * something else on-the-fly?
 901          */
 902         return(check_parent(mdoc, n, MDOC_Bl, MDOC_BODY));
 903 }
 904
 905
 906 static int
 907 pre_an(PRE_ARGS)
 908 {
 909         int              i;
 910
 911         if (NULL == n->args)
 912                 return(1);
 913
 914         for (i = 1; i < (int)n->args->argc; i++)
 915                 mdoc_pmsg(mdoc, n->args->argv[i].line,
 916                         n->args->argv[i].pos, MANDOCERR_IGNARGV);
 917
 918         if (MDOC_Split == n->args->argv[0].arg)
 919                 n->data.An.auth = AUTH_split;
 920         else if (MDOC_Nosplit == n->args->argv[0].arg)
 921                 n->data.An.auth = AUTH_nosplit;
 922         else
 923                 abort();
 924
 925         return(1);
 926 }
 927
 928 static int
 929 pre_std(PRE_ARGS)
 930 {
 931
 932         if (n->args && 1 == n->args->argc)
 933                 if (MDOC_Std == n->args->argv[0].arg)
 934                         return(1);
 935
 936         mdoc_nmsg(mdoc, n, MANDOCERR_NOARGV);
 937         return(1);
 938 }
 939
 940 static int
 941 pre_dt(PRE_ARGS)
 942 {
 943
 944         if (0 == mdoc->meta.date || mdoc->meta.os)
 945                 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
 946
 947         if (mdoc->meta.title)
 948                 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
 949
 950         return(1);
 951 }
 952
 953 static int
 954 pre_os(PRE_ARGS)
 955 {
 956
 957         if (NULL == mdoc->meta.title || 0 == mdoc->meta.date)
 958                 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
 959
 960         if (mdoc->meta.os)
 961                 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
 962
 963         return(1);
 964 }
 965
 966 static int
 967 pre_dd(PRE_ARGS)
 968 {
 969
 970         if (mdoc->meta.title || mdoc->meta.os)
 971                 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
 972
 973         if (mdoc->meta.date)
 974                 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
 975
 976         return(1);
 977 }
 978
 979
 980 static int
 981 post_bf(POST_ARGS)
 982 {
 983         struct mdoc_node *np;
 984         enum mdocargt     arg;
 985
 986         /*
 987          * Unlike other data pointers, these are "housed" by the HEAD
 988          * element, which contains the goods.
 989          */
 990
 991         if (MDOC_HEAD != mdoc->last->type) {
 992                 if (ENDBODY_NOT != mdoc->last->end) {
 993                         assert(mdoc->last->pending);
 994                         np = mdoc->last->pending->parent->head;
 995                 } else if (MDOC_BLOCK != mdoc->last->type) {
 996                         np = mdoc->last->parent->head;
 997                 } else
 998                         np = mdoc->last->head;
 999
1000                 assert(np);
1001                 assert(MDOC_HEAD == np->type);
1002                 assert(MDOC_Bf == np->tok);
1003                 assert(np->data.Bf);
1004                 mdoc->last->data.Bf = np->data.Bf;
1005                 return(1);
1006         }
1007
1008         np = mdoc->last;
1009         assert(MDOC_BLOCK == np->parent->type);
1010         assert(MDOC_Bf == np->parent->tok);
1011         np->data.Bf = mandoc_calloc(1, sizeof(struct mdoc_bf));
1012
1013         /*
1014          * Cannot have both argument and parameter.
1015          * If neither is specified, let it through with a warning.
1016          */
1017
1018         if (np->parent->args && np->child) {
1019                 mdoc_nmsg(mdoc, np, MANDOCERR_SYNTARGVCOUNT);
1020                 return(0);
1021         } else if (NULL == np->parent->args && NULL == np->child) {
1022                 mdoc_nmsg(mdoc, np, MANDOCERR_FONTTYPE);
1023                 return(1);
1024         }
1025
1026         /* Extract argument into data. */
1027
1028         if (np->parent->args) {
1029                 arg = np->parent->args->argv[0].arg;
1030                 if (MDOC_Emphasis == arg)
1031                         np->data.Bf->font = FONT_Em;
1032                 else if (MDOC_Literal == arg)
1033                         np->data.Bf->font = FONT_Li;
1034                 else if (MDOC_Symbolic == arg)
1035                         np->data.Bf->font = FONT_Sy;
1036                 else
1037                         abort();
1038                 return(1);
1039         }
1040
1041         /* Extract parameter into data. */
1042
1043         if (0 == strcmp(np->child->string, "Em"))
1044                 np->data.Bf->font = FONT_Em;
1045         else if (0 == strcmp(np->child->string, "Li"))
1046                 np->data.Bf->font = FONT_Li;
1047         else if (0 == strcmp(np->child->string, "Sy"))
1048                 np->data.Bf->font = FONT_Sy;
1049         else
1050                 mdoc_nmsg(mdoc, np, MANDOCERR_FONTTYPE);
1051
1052         return(1);
1053 }
1054
1055 static int
1056 post_lb(POST_ARGS)
1057 {
1058         const char      *p;
1059         char            *buf;
1060         size_t           sz;
1061
1062         assert(mdoc->last->child);
1063         assert(MDOC_TEXT == mdoc->last->child->type);
1064
1065         p = mdoc_a2lib(mdoc->last->child->string);
1066
1067         /* If lookup ok, replace with table value. */
1068
1069         if (p) {
1070                 free(mdoc->last->child->string);
1071                 mdoc->last->child->string = mandoc_strdup(p);
1072                 return(1);
1073         }
1074
1075         /* If not, use "library ``xxxx''. */
1076
1077         sz = strlen(mdoc->last->child->string) +
1078                 2 + strlen("\\(lqlibrary\\(rq");
1079         buf = mandoc_malloc(sz);
1080         snprintf(buf, sz, "library \\(lq%s\\(rq",
1081                         mdoc->last->child->string);
1082         free(mdoc->last->child->string);
1083         mdoc->last->child->string = buf;
1084         return(1);
1085 }
1086
1087 static int
1088 post_eoln(POST_ARGS)
1089 {
1090
1091         if (mdoc->last->child)
1092                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_ARGSLOST);
1093         return(1);
1094 }
1095
1096
1097 static int
1098 post_vt(POST_ARGS)
1099 {
1100         const struct mdoc_node *n;
1101
1102         /*
1103          * The Vt macro comes in both ELEM and BLOCK form, both of which
1104          * have different syntaxes (yet more context-sensitive
1105          * behaviour).  ELEM types must have a child; BLOCK types,
1106          * specifically the BODY, should only have TEXT children.
1107          */
1108
1109         if (MDOC_ELEM == mdoc->last->type)
1110                 return(eerr_ge1(mdoc));
1111         if (MDOC_BODY != mdoc->last->type)
1112                 return(1);
1113
1114         for (n = mdoc->last->child; n; n = n->next)
1115                 if (MDOC_TEXT != n->type)
1116                         mdoc_nmsg(mdoc, n, MANDOCERR_CHILD);
1117
1118         return(1);
1119 }
1120
1121
1122 static int
1123 post_nm(POST_ARGS)
1124 {
1125         char             buf[BUFSIZ];
1126
1127         /* If no child specified, make sure we have the meta name. */
1128
1129         if (NULL == mdoc->last->child && NULL == mdoc->meta.name) {
1130                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NONAME);
1131                 return(1);
1132         } else if (mdoc->meta.name)
1133                 return(1);
1134
1135         /* If no meta name, set it from the child. */
1136
1137         if ( ! concat(mdoc, buf, mdoc->last->child, BUFSIZ))
1138                 return(0);
1139
1140         mdoc->meta.name = mandoc_strdup(buf);
1141
1142         return(1);
1143 }
1144
1145 static int
1146 post_literal(POST_ARGS)
1147 {
1148
1149         /*
1150          * The `Dl' (note "el" not "one") and `Bd' macros unset the
1151          * MDOC_LITERAL flag as they leave.  Note that `Bd' only sets
1152          * this in literal mode, but it doesn't hurt to just switch it
1153          * off in general since displays can't be nested.
1154          */
1155
1156         if (MDOC_BODY == mdoc->last->type)
1157                 mdoc->flags &= ~MDOC_LITERAL;
1158
1159         return(1);
1160 }
1161
1162 static int
1163 post_defaults(POST_ARGS)
1164 {
1165         struct mdoc_node *nn;
1166
1167         /*
1168          * The `Ar' defaults to "file ..." if no value is provided as an
1169          * argument; the `Mt' and `Pa' macros use "~"; the `Li' just
1170          * gets an empty string.
1171          */
1172
1173         if (mdoc->last->child)
1174                 return(1);
1175
1176         nn = mdoc->last;
1177         mdoc->next = MDOC_NEXT_CHILD;
1178
1179         switch (nn->tok) {
1180         case (MDOC_Ar):
1181                 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "file"))
1182                         return(0);
1183                 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "..."))
1184                         return(0);
1185                 break;
1186         case (MDOC_At):
1187                 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "AT&T"))
1188                         return(0);
1189                 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "UNIX"))
1190                         return(0);
1191                 break;
1192         case (MDOC_Li):
1193                 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, ""))
1194                         return(0);
1195                 break;
1196         case (MDOC_Pa):
1197                 /* FALLTHROUGH */
1198         case (MDOC_Mt):
1199                 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "~"))
1200                         return(0);
1201                 break;
1202         default:
1203                 abort();
1204                 /* NOTREACHED */
1205         }
1206
1207         mdoc->last = nn;
1208         return(1);
1209 }
1210
1211 static int
1212 post_at(POST_ARGS)
1213 {
1214         const char       *p, *q;
1215         char             *buf;
1216         size_t            sz;
1217
1218         /*
1219          * If we have a child, look it up in the standard keys.  If a
1220          * key exist, use that instead of the child; if it doesn't,
1221          * prefix "AT&T UNIX " to the existing data.
1222          */
1223
1224         if (NULL == mdoc->last->child)
1225                 return(1);
1226
1227         assert(MDOC_TEXT == mdoc->last->child->type);
1228         p = mdoc_a2att(mdoc->last->child->string);
1229
1230         if (p) {
1231                 free(mdoc->last->child->string);
1232                 mdoc->last->child->string = mandoc_strdup(p);
1233         } else {
1234                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADATT);
1235                 p = "AT&T UNIX ";
1236                 q = mdoc->last->child->string;
1237                 sz = strlen(p) + strlen(q) + 1;
1238                 buf = mandoc_malloc(sz);
1239                 strlcpy(buf, p, sz);
1240                 strlcat(buf, q, sz);
1241                 free(mdoc->last->child->string);
1242                 mdoc->last->child->string = buf;
1243         }
1244
1245         return(1);
1246 }
1247
1248 static int
1249 post_an(POST_ARGS)
1250 {
1251         struct mdoc_node *np;
1252
1253         np = mdoc->last;
1254         if (AUTH__NONE != np->data.An.auth && np->child)
1255                 return(eerr_eq0(mdoc));
1256
1257         /*
1258          * FIXME: make this ewarn and make sure that the front-ends
1259          * don't print the arguments.
1260          */
1261         if (AUTH__NONE != np->data.An.auth || np->child)
1262                 return(1);
1263
1264         mdoc_nmsg(mdoc, np, MANDOCERR_NOARGS);
1265         return(1);
1266 }
1267
1268
1269 static int
1270 post_it(POST_ARGS)
1271 {
1272         int               i, cols, rc;
1273         enum mdoc_list    lt;
1274         struct mdoc_node *n, *c;
1275         enum mandocerr    er;
1276
1277         if (MDOC_BLOCK != mdoc->last->type)
1278                 return(1);
1279
1280         n = mdoc->last->parent->parent;
1281         assert(n->data.Bl);
1282         lt = n->data.Bl->type;
1283
1284         if (LIST__NONE == lt) {
1285                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_LISTTYPE);
1286                 return(1);
1287         }
1288
1289         switch (lt) {
1290         case (LIST_tag):
1291                 if (mdoc->last->head->child)
1292                         break;
1293                 /* FIXME: give this a dummy value. */
1294                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOARGS);
1295                 break;
1296         case (LIST_hang):
1297                 /* FALLTHROUGH */
1298         case (LIST_ohang):
1299                 /* FALLTHROUGH */
1300         case (LIST_inset):
1301                 /* FALLTHROUGH */
1302         case (LIST_diag):
1303                 if (NULL == mdoc->last->head->child)
1304                         mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOARGS);
1305                 break;
1306         case (LIST_bullet):
1307                 /* FALLTHROUGH */
1308         case (LIST_dash):
1309                 /* FALLTHROUGH */
1310         case (LIST_enum):
1311                 /* FALLTHROUGH */
1312         case (LIST_hyphen):
1313                 if (NULL == mdoc->last->body->child)
1314                         mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOBODY);
1315                 /* FALLTHROUGH */
1316         case (LIST_item):
1317                 if (mdoc->last->head->child)
1318                         mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_ARGSLOST);
1319                 break;
1320         case (LIST_column):
1321                 cols = (int)n->data.Bl->ncols;
1322
1323                 assert(NULL == mdoc->last->head->child);
1324
1325                 if (NULL == mdoc->last->body->child)
1326                         mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOBODY);
1327
1328                 for (i = 0, c = mdoc->last->child; c; c = c->next)
1329                         if (MDOC_BODY == c->type)
1330                                 i++;
1331
1332                 if (i < cols)
1333                         er = MANDOCERR_ARGCOUNT;
1334                 else if (i == cols || i == cols + 1)
1335                         break;
1336                 else
1337                         er = MANDOCERR_SYNTARGCOUNT;
1338
1339                 rc = mdoc_vmsg(mdoc, er,
1340                                 mdoc->last->line, mdoc->last->pos,
1341                                 "columns == %d (have %d)", cols, i);
1342                 return(rc);
1343         default:
1344                 break;
1345         }
1346
1347         return(1);
1348 }
1349
1350 static int
1351 post_bl_block(POST_ARGS)
1352 {
1353         struct mdoc_node *n;
1354
1355         /*
1356          * These are fairly complicated, so we've broken them into two
1357          * functions.  post_bl_block_tag() is called when a -tag is
1358          * specified, but no -width (it must be guessed).  The second
1359          * when a -width is specified (macro indicators must be
1360          * rewritten into real lengths).
1361          */
1362
1363         n = mdoc->last;
1364
1365         if (LIST_tag == n->data.Bl->type &&
1366                         NULL == n->data.Bl->width) {
1367                 if ( ! post_bl_block_tag(mdoc))
1368                         return(0);
1369         } else if (NULL != n->data.Bl->width) {
1370                 if ( ! post_bl_block_width(mdoc))
1371                         return(0);
1372         } else
1373                 return(1);
1374
1375         assert(n->data.Bl->width);
1376         return(1);
1377 }
1378
1379 static int
1380 post_bl_block_width(POST_ARGS)
1381 {
1382         size_t            width;
1383         int               i;
1384         enum mdoct        tok;
1385         struct mdoc_node *n;
1386         char              buf[NUMSIZ];
1387
1388         n = mdoc->last;
1389
1390         /*
1391          * Calculate the real width of a list from the -width string,
1392          * which may contain a macro (with a known default width), a
1393          * literal string, or a scaling width.
1394          *
1395          * If the value to -width is a macro, then we re-write it to be
1396          * the macro's width as set in share/tmac/mdoc/doc-common.
1397          */
1398
1399         if (0 == strcmp(n->data.Bl->width, "Ds"))
1400                 width = 6;
1401         else if (MDOC_MAX == (tok = mdoc_hash_find(n->data.Bl->width)))
1402                 return(1);
1403         else if (0 == (width = mdoc_macro2len(tok)))  {
1404                 mdoc_nmsg(mdoc, n, MANDOCERR_BADWIDTH);
1405                 return(1);
1406         }
1407
1408         /* The value already exists: free and reallocate it. */
1409
1410         assert(n->args);
1411
1412         for (i = 0; i < (int)n->args->argc; i++)
1413                 if (MDOC_Width == n->args->argv[i].arg)
1414                         break;
1415
1416         assert(i < (int)n->args->argc);
1417
1418         snprintf(buf, NUMSIZ, "%zun", width);
1419         free(n->args->argv[i].value[0]);
1420         n->args->argv[i].value[0] = mandoc_strdup(buf);
1421
1422         /* Set our width! */
1423         n->data.Bl->width = n->args->argv[i].value[0];
1424         return(1);
1425 }
1426
1427 static int
1428 post_bl_block_tag(POST_ARGS)
1429 {
1430         struct mdoc_node *n, *nn;
1431         size_t            sz, ssz;
1432         int               i;
1433         char              buf[NUMSIZ];
1434
1435         /*
1436          * Calculate the -width for a `Bl -tag' list if it hasn't been
1437          * provided.  Uses the first head macro.  NOTE AGAIN: this is
1438          * ONLY if the -width argument has NOT been provided.  See
1439          * post_bl_block_width() for converting the -width string.
1440          */
1441
1442         sz = 10;
1443         n = mdoc->last;
1444
1445         for (nn = n->body->child; nn; nn = nn->next) {
1446                 if (MDOC_It != nn->tok)
1447                         continue;
1448
1449                 assert(MDOC_BLOCK == nn->type);
1450                 nn = nn->head->child;
1451
1452                 if (nn == NULL) {
1453                         /* No -width for .Bl and first .It is emtpy */
1454                         mdoc_nmsg(mdoc, n, MANDOCERR_NOWIDTHARG);
1455                         break;
1456                 }
1457
1458                 if (MDOC_TEXT == nn->type) {
1459                         sz = strlen(nn->string) + 1;
1460                         break;
1461                 }
1462
1463                 if (0 != (ssz = mdoc_macro2len(nn->tok)))
1464                         sz = ssz;
1465                 else
1466                         mdoc_nmsg(mdoc, n, MANDOCERR_NOWIDTHARG);
1467
1468                 break;
1469         }
1470
1471         /* Defaults to ten ens. */
1472
1473         snprintf(buf, NUMSIZ, "%zun", sz);
1474
1475         /*
1476          * We have to dynamically add this to the macro's argument list.
1477          * We're guaranteed that a MDOC_Width doesn't already exist.
1478          */
1479
1480         assert(n->args);
1481         i = (int)(n->args->argc)++;
1482
1483         n->args->argv = mandoc_realloc(n->args->argv,
1484                         n->args->argc * sizeof(struct mdoc_argv));
1485
1486         n->args->argv[i].arg = MDOC_Width;
1487         n->args->argv[i].line = n->line;
1488         n->args->argv[i].pos = n->pos;
1489         n->args->argv[i].sz = 1;
1490         n->args->argv[i].value = mandoc_malloc(sizeof(char *));
1491         n->args->argv[i].value[0] = mandoc_strdup(buf);
1492
1493         /* Set our width! */
1494         n->data.Bl->width = n->args->argv[i].value[0];
1495         return(1);
1496 }
1497
1498
1499 static int
1500 post_bl_head(POST_ARGS)
1501 {
1502         struct mdoc_node *np, *nn, *nnp;
1503         int               i, j;
1504
1505         if (LIST_column != mdoc->last->data.Bl->type)
1506                 /* FIXME: this should be ERROR class... */
1507                 return(hwarn_eq0(mdoc));
1508
1509         /*
1510          * Convert old-style lists, where the column width specifiers
1511          * trail as macro parameters, to the new-style ("normal-form")
1512          * lists where they're argument values following -column.
1513          */
1514
1515         /* First, disallow both types and allow normal-form. */
1516
1517         /*
1518          * TODO: technically, we can accept both and just merge the two
1519          * lists, but I'll leave that for another day.
1520          */
1521
1522         if (mdoc->last->data.Bl->ncols && mdoc->last->nchild) {
1523                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_COLUMNS);
1524                 return(0);
1525         } else if (NULL == mdoc->last->child)
1526                 return(1);
1527
1528         np = mdoc->last->parent;
1529         assert(np->args);
1530
1531         for (j = 0; j < (int)np->args->argc; j++)
1532                 if (MDOC_Column == np->args->argv[j].arg)
1533                         break;
1534
1535         assert(j < (int)np->args->argc);
1536         assert(0 == np->args->argv[j].sz);
1537
1538         /*
1539          * Accomodate for new-style groff column syntax.  Shuffle the
1540          * child nodes, all of which must be TEXT, as arguments for the
1541          * column field.  Then, delete the head children.
1542          */
1543
1544         np->args->argv[j].sz = (size_t)mdoc->last->nchild;
1545         np->args->argv[j].value = mandoc_malloc
1546                 ((size_t)mdoc->last->nchild * sizeof(char *));
1547
1548         mdoc->last->data.Bl->ncols = np->args->argv[j].sz;
1549         mdoc->last->data.Bl->cols = (const char **)np->args->argv[j].value;
1550
1551         for (i = 0, nn = mdoc->last->child; nn; i++) {
1552                 np->args->argv[j].value[i] = nn->string;
1553                 nn->string = NULL;
1554                 nnp = nn;
1555                 nn = nn->next;
1556                 mdoc_node_delete(NULL, nnp);
1557         }
1558
1559         mdoc->last->nchild = 0;
1560         mdoc->last->child = NULL;
1561
1562         return(1);
1563 }
1564
1565 static int
1566 post_bl(POST_ARGS)
1567 {
1568         struct mdoc_node        *n;
1569
1570         if (MDOC_HEAD == mdoc->last->type)
1571                 return(post_bl_head(mdoc));
1572         if (MDOC_BLOCK == mdoc->last->type)
1573                 return(post_bl_block(mdoc));
1574         if (MDOC_BODY != mdoc->last->type)
1575                 return(1);
1576         if (NULL == mdoc->last->child)
1577                 return(1);
1578
1579         /*
1580          * We only allow certain children of `Bl'.  This is usually on
1581          * `It', but apparently `Sm' occurs here and there, so we let
1582          * that one through, too.
1583          */
1584
1585         /* LINTED */
1586         for (n = mdoc->last->child; n; n = n->next) {
1587                 if (MDOC_BLOCK == n->type && MDOC_It == n->tok)
1588                         continue;
1589                 if (MDOC_Sm == n->tok)
1590                         continue;
1591                 mdoc_nmsg(mdoc, n, MANDOCERR_SYNTCHILD);
1592                 return(0);
1593         }
1594
1595         return(1);
1596 }
1597
1598 static int
1599 ebool(struct mdoc *mdoc)
1600 {
1601
1602         if (NULL == mdoc->last->child)
1603                 return(1);
1604
1605         assert(MDOC_TEXT == mdoc->last->child->type);
1606
1607         if (0 == strcmp(mdoc->last->child->string, "on"))
1608                 return(1);
1609         if (0 == strcmp(mdoc->last->child->string, "off"))
1610                 return(1);
1611
1612         mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADBOOL);
1613         return(1);
1614 }
1615
1616 static int
1617 post_root(POST_ARGS)
1618 {
1619         int               erc;
1620         struct mdoc_node *n;
1621
1622         erc = 0;
1623
1624         /* Check that we have a finished prologue. */
1625
1626         if ( ! (MDOC_PBODY & mdoc->flags)) {
1627                 erc++;
1628                 mdoc_nmsg(mdoc, mdoc->first, MANDOCERR_NODOCPROLOG);
1629         }
1630
1631         n = mdoc->first;
1632         assert(n);
1633
1634         /* Check that we begin with a proper `Sh'. */
1635
1636         if (NULL == n->child) {
1637                 erc++;
1638                 mdoc_nmsg(mdoc, n, MANDOCERR_NODOCBODY);
1639         } else if (MDOC_BLOCK != n->child->type ||
1640                         MDOC_Sh != n->child->tok) {
1641                 erc++;
1642                 /* Can this be lifted?  See rxdebug.1 for example. */
1643                 mdoc_nmsg(mdoc, n, MANDOCERR_NODOCBODY);
1644         }
1645
1646         return(erc ? 0 : 1);
1647 }
1648
1649 static int
1650 post_st(POST_ARGS)
1651 {
1652         const char      *p;
1653
1654         assert(MDOC_TEXT == mdoc->last->child->type);
1655
1656         p = mdoc_a2st(mdoc->last->child->string);
1657
1658         if (p == NULL) {
1659                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADSTANDARD);
1660                 mdoc_node_delete(mdoc, mdoc->last);
1661         } else {
1662                 free(mdoc->last->child->string);
1663                 mdoc->last->child->string = mandoc_strdup(p);
1664         }
1665
1666         return(1);
1667 }
1668
1669 static int
1670 post_rs(POST_ARGS)
1671 {
1672         struct mdoc_node *nn, *next, *prev;
1673         int               i, j;
1674
1675         if (MDOC_BODY != mdoc->last->type)
1676                 return(1);
1677
1678         /*
1679          * Make sure only certain types of nodes are allowed within the
1680          * the `Rs' body.  Delete offending nodes and raise a warning.
1681          * Do this before re-ordering for the sake of clarity.
1682          */
1683
1684         next = NULL;
1685         for (nn = mdoc->last->child; nn; nn = next) {
1686                 for (i = 0; i < RSORD_MAX; i++)
1687                         if (nn->tok == rsord[i])
1688                                 break;
1689
1690                 if (i < RSORD_MAX) {
1691                         next = nn->next;
1692                         continue;
1693                 }
1694
1695                 next = nn->next;
1696                 mdoc_nmsg(mdoc, nn, MANDOCERR_CHILD);
1697                 mdoc_node_delete(mdoc, nn);
1698         }
1699
1700         /*
1701          * The full `Rs' block needs special handling to order the
1702          * sub-elements according to `rsord'.  Pick through each element
1703          * and correctly order it.  This is a insertion sort.
1704          */
1705
1706         next = NULL;
1707         for (nn = mdoc->last->child->next; nn; nn = next) {
1708                 /* Determine order of `nn'. */
1709                 for (i = 0; i < RSORD_MAX; i++)
1710                         if (rsord[i] == nn->tok)
1711                                 break;
1712
1713                 /*
1714                  * Remove `nn' from the chain.  This somewhat
1715                  * repeats mdoc_node_unlink(), but since we're
1716                  * just re-ordering, there's no need for the
1717                  * full unlink process.
1718                  */
1719
1720                 if (NULL != (next = nn->next))
1721                         next->prev = nn->prev;
1722
1723                 if (NULL != (prev = nn->prev))
1724                         prev->next = nn->next;
1725
1726                 nn->prev = nn->next = NULL;
1727
1728                 /*
1729                  * Scan back until we reach a node that's
1730                  * ordered before `nn'.
1731                  */
1732
1733                 for ( ; prev ; prev = prev->prev) {
1734                         /* Determine order of `prev'. */
1735                         for (j = 0; j < RSORD_MAX; j++)
1736                                 if (rsord[j] == prev->tok)
1737                                         break;
1738
1739                         if (j <= i)
1740                                 break;
1741                 }
1742
1743                 /*
1744                  * Set `nn' back into its correct place in front
1745                  * of the `prev' node.
1746                  */
1747
1748                 nn->prev = prev;
1749
1750                 if (prev) {
1751                         if (prev->next)
1752                                 prev->next->prev = nn;
1753                         nn->next = prev->next;
1754                         prev->next = nn;
1755                 } else {
1756                         mdoc->last->child->prev = nn;
1757                         nn->next = mdoc->last->child;
1758                         mdoc->last->child = nn;
1759                 }
1760         }
1761
1762         return(1);
1763 }
1764
1765 static int
1766 post_sh(POST_ARGS)
1767 {
1768
1769         if (MDOC_HEAD == mdoc->last->type)
1770                 return(post_sh_head(mdoc));
1771         if (MDOC_BODY == mdoc->last->type)
1772                 return(post_sh_body(mdoc));
1773
1774         return(1);
1775 }
1776
1777 static int
1778 post_sh_body(POST_ARGS)
1779 {
1780         struct mdoc_node *n;
1781
1782         if (SEC_NAME != mdoc->lastsec)
1783                 return(1);
1784
1785         /*
1786          * Warn if the NAME section doesn't contain the `Nm' and `Nd'
1787          * macros (can have multiple `Nm' and one `Nd').  Note that the
1788          * children of the BODY declaration can also be "text".
1789          */
1790
1791         if (NULL == (n = mdoc->last->child)) {
1792                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
1793                 return(1);
1794         }
1795
1796         for ( ; n && n->next; n = n->next) {
1797                 if (MDOC_ELEM == n->type && MDOC_Nm == n->tok)
1798                         continue;
1799                 if (MDOC_TEXT == n->type)
1800                         continue;
1801                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
1802         }
1803
1804         assert(n);
1805         if (MDOC_BLOCK == n->type && MDOC_Nd == n->tok)
1806                 return(1);
1807
1808         mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
1809         return(1);
1810 }
1811
1812 static int
1813 post_sh_head(POST_ARGS)
1814 {
1815         char             buf[BUFSIZ];
1816         enum mdoc_sec    sec;
1817
1818         /*
1819          * Process a new section.  Sections are either "named" or
1820          * "custom".  Custom sections are user-defined, while named ones
1821          * follow a conventional order and may only appear in certain
1822          * manual sections.
1823          */
1824
1825         if ( ! concat(mdoc, buf, mdoc->last->child, BUFSIZ))
1826                 return(0);
1827
1828         sec = mdoc_str2sec(buf);
1829
1830         /* The NAME should be first. */
1831
1832         if (SEC_NAME != sec && SEC_NONE == mdoc->lastnamed)
1833                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NAMESECFIRST);
1834
1835         /* The SYNOPSIS gets special attention in other areas. */
1836
1837         if (SEC_SYNOPSIS == sec)
1838                 mdoc->flags |= MDOC_SYNOPSIS;
1839         else
1840                 mdoc->flags &= ~MDOC_SYNOPSIS;
1841
1842         /* Mark our last section. */
1843
1844         mdoc->lastsec = sec;
1845
1846         /* We don't care about custom sections after this. */
1847
1848         if (SEC_CUSTOM == sec)
1849                 return(1);
1850
1851         /*
1852          * Check whether our non-custom section is being repeated or is
1853          * out of order.
1854          */
1855
1856         if (sec == mdoc->lastnamed)
1857                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_SECREP);
1858
1859         if (sec < mdoc->lastnamed)
1860                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_SECOOO);
1861
1862         /* Mark the last named section. */
1863
1864         mdoc->lastnamed = sec;
1865
1866         /* Check particular section/manual conventions. */
1867
1868         assert(mdoc->meta.msec);
1869
1870         switch (sec) {
1871         case (SEC_RETURN_VALUES):
1872                 /* FALLTHROUGH */
1873         case (SEC_ERRORS):
1874                 /* FALLTHROUGH */
1875         case (SEC_LIBRARY):
1876                 if (*mdoc->meta.msec == '2')
1877                         break;
1878                 if (*mdoc->meta.msec == '3')
1879                         break;
1880                 if (*mdoc->meta.msec == '9')
1881                         break;
1882                 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_SECMSEC);
1883                 break;
1884         default:
1885                 break;
1886         }
1887
1888         return(1);
1889 }
1890
1891 static int
1892 pre_par(PRE_ARGS)
1893 {
1894
1895         if (NULL == mdoc->last)
1896                 return(1);
1897
1898         /*
1899          * Don't allow prior `Lp' or `Pp' prior to a paragraph-type
1900          * block:  `Lp', `Pp', or non-compact `Bd' or `Bl'.
1901          */
1902
1903         if (MDOC_Pp != mdoc->last->tok && MDOC_Lp != mdoc->last->tok)
1904                 return(1);
1905
1906         if (MDOC_Bl == n->tok && n->data.Bl->comp)
1907                 return(1);
1908         if (MDOC_Bd == n->tok && n->data.Bd->comp)
1909                 return(1);
1910
1911         mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_IGNPAR);
1912         mdoc_node_delete(mdoc, mdoc->last);
1913         return(1);
1914 }
1915
1916 static int
1917 pre_literal(PRE_ARGS)
1918 {
1919
1920         if (MDOC_BODY != n->type)
1921                 return(1);
1922
1923         /*
1924          * The `Dl' (note "el" not "one") and `Bd -literal' and `Bd
1925          * -unfilled' macros set MDOC_LITERAL on entrance to the body.
1926          */
1927
1928         switch (n->tok) {
1929         case (MDOC_Dl):
1930                 mdoc->flags |= MDOC_LITERAL;
1931                 break;
1932         case (MDOC_Bd):
1933                 assert(n->data.Bd);
1934                 if (DISP_literal == n->data.Bd->type)
1935                         mdoc->flags |= MDOC_LITERAL;
1936                 if (DISP_unfilled == n->data.Bd->type)
1937                         mdoc->flags |= MDOC_LITERAL;
1938                 break;
1939         default:
1940                 abort();
1941                 /* NOTREACHED */
1942         }
1943
1944         return(1);
1945 }
1946
1947 static int
1948 post_dd(POST_ARGS)
1949 {
1950         char              buf[DATESIZE];
1951         struct mdoc_node *n;
1952
1953         n = mdoc->last;
1954
1955         if (NULL == n->child) {
1956                 mdoc->meta.date = time(NULL);
1957                 return(1);
1958         }
1959
1960         if ( ! concat(mdoc, buf, n->child, DATESIZE))
1961                 return(0);
1962
1963         mdoc->meta.date = mandoc_a2time
1964                 (MTIME_MDOCDATE | MTIME_CANONICAL, buf);
1965
1966         if (0 == mdoc->meta.date) {
1967                 mdoc_nmsg(mdoc, n, MANDOCERR_BADDATE);
1968                 mdoc->meta.date = time(NULL);
1969         }
1970
1971         return(1);
1972 }
1973
1974 static int
1975 post_dt(POST_ARGS)
1976 {
1977         struct mdoc_node *nn, *n;
1978         const char       *cp;
1979         char             *p;
1980
1981         n = mdoc->last;
1982
1983         if (mdoc->meta.title)
1984                 free(mdoc->meta.title);
1985         if (mdoc->meta.vol)
1986                 free(mdoc->meta.vol);
1987         if (mdoc->meta.arch)
1988                 free(mdoc->meta.arch);
1989
1990         mdoc->meta.title = mdoc->meta.vol = mdoc->meta.arch = NULL;
1991
1992         /* First make all characters uppercase. */
1993
1994         if (NULL != (nn = n->child))
1995                 for (p = nn->string; *p; p++) {
1996                         if (toupper((u_char)*p) == *p)
1997                                 continue;
1998
1999                         /*
2000                          * FIXME: don't be lazy: have this make all
2001                          * characters be uppercase and just warn once.
2002                          */
2003                         mdoc_nmsg(mdoc, nn, MANDOCERR_UPPERCASE);
2004                         break;
2005                 }
2006
2007         /* Handles: `.Dt'
2008          *   --> title = unknown, volume = local, msec = 0, arch = NULL
2009          */
2010
2011         if (NULL == (nn = n->child)) {
2012                 /* XXX: make these macro values. */
2013                 /* FIXME: warn about missing values. */
2014                 mdoc->meta.title = mandoc_strdup("UNKNOWN");
2015                 mdoc->meta.vol = mandoc_strdup("LOCAL");
2016                 mdoc->meta.msec = mandoc_strdup("1");
2017                 return(1);
2018         }
2019
2020         /* Handles: `.Dt TITLE'
2021          *   --> title = TITLE, volume = local, msec = 0, arch = NULL
2022          */
2023
2024         mdoc->meta.title = mandoc_strdup
2025                 ('\0' == nn->string[0] ? "UNKNOWN" : nn->string);
2026
2027         if (NULL == (nn = nn->next)) {
2028                 /* FIXME: warn about missing msec. */
2029                 /* XXX: make this a macro value. */
2030                 mdoc->meta.vol = mandoc_strdup("LOCAL");
2031                 mdoc->meta.msec = mandoc_strdup("1");
2032                 return(1);
2033         }
2034
2035         /* Handles: `.Dt TITLE SEC'
2036          *   --> title = TITLE, volume = SEC is msec ?
2037          *           format(msec) : SEC,
2038          *       msec = SEC is msec ? atoi(msec) : 0,
2039          *       arch = NULL
2040          */
2041
2042         cp = mdoc_a2msec(nn->string);
2043         if (cp) {
2044                 mdoc->meta.vol = mandoc_strdup(cp);
2045                 mdoc->meta.msec = mandoc_strdup(nn->string);
2046         } else {
2047                 mdoc_nmsg(mdoc, n, MANDOCERR_BADMSEC);
2048                 mdoc->meta.vol = mandoc_strdup(nn->string);
2049                 mdoc->meta.msec = mandoc_strdup(nn->string);
2050         }
2051
2052         if (NULL == (nn = nn->next))
2053                 return(1);
2054
2055         /* Handles: `.Dt TITLE SEC VOL'
2056          *   --> title = TITLE, volume = VOL is vol ?
2057          *       format(VOL) :
2058          *           VOL is arch ? format(arch) :
2059          *               VOL
2060          */
2061
2062         cp = mdoc_a2vol(nn->string);
2063         if (cp) {
2064                 free(mdoc->meta.vol);
2065                 mdoc->meta.vol = mandoc_strdup(cp);
2066         } else {
2067                 /* FIXME: warn about bad arch. */
2068                 cp = mdoc_a2arch(nn->string);
2069                 if (NULL == cp) {
2070                         free(mdoc->meta.vol);
2071                         mdoc->meta.vol = mandoc_strdup(nn->string);
2072                 } else
2073                         mdoc->meta.arch = mandoc_strdup(cp);
2074         }
2075
2076         /* Ignore any subsequent parameters... */
2077         /* FIXME: warn about subsequent parameters. */
2078
2079         return(1);
2080 }
2081
2082 static int
2083 post_prol(POST_ARGS)
2084 {
2085         /*
2086          * Remove prologue macros from the document after they're
2087          * processed.  The final document uses mdoc_meta for these
2088          * values and discards the originals.
2089          */
2090
2091         mdoc_node_delete(mdoc, mdoc->last);
2092         if (mdoc->meta.title && mdoc->meta.date && mdoc->meta.os)
2093                 mdoc->flags |= MDOC_PBODY;
2094
2095         return(1);
2096 }
2097
2098 static int
2099 post_os(POST_ARGS)
2100 {
2101         struct mdoc_node *n;
2102         char              buf[BUFSIZ];
2103 #ifndef OSNAME
2104         struct utsname    utsname;
2105 #endif
2106
2107         n = mdoc->last;
2108
2109         /*
2110          * Set the operating system by way of the `Os' macro.  Note that
2111          * if an argument isn't provided and -DOSNAME="\"foo\"" is
2112          * provided during compilation, this value will be used instead
2113          * of filling in "sysname release" from uname().
2114          */
2115
2116         if (mdoc->meta.os)
2117                 free(mdoc->meta.os);
2118
2119         if ( ! concat(mdoc, buf, n->child, BUFSIZ))
2120                 return(0);
2121
2122         /* XXX: yes, these can all be dynamically-adjusted buffers, but
2123          * it's really not worth the extra hackery.
2124          */
2125
2126         if ('\0' == buf[0]) {
2127 #ifdef OSNAME
2128                 if (strlcat(buf, OSNAME, BUFSIZ) >= BUFSIZ) {
2129                         mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
2130                         return(0);
2131                 }
2132 #else /*!OSNAME */
2133                 if (uname(&utsname)) {
2134                         mdoc_nmsg(mdoc, n, MANDOCERR_UNAME);
2135                         mdoc->meta.os = mandoc_strdup("UNKNOWN");
2136                         return(post_prol(mdoc));
2137                 }
2138
2139                 if (strlcat(buf, utsname.sysname, BUFSIZ) >= BUFSIZ) {
2140                         mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
2141                         return(0);
2142                 }
2143                 if (strlcat(buf, " ", BUFSIZ) >= BUFSIZ) {
2144                         mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
2145                         return(0);
2146                 }
2147                 if (strlcat(buf, utsname.release, BUFSIZ) >= BUFSIZ) {
2148                         mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
2149                         return(0);
2150                 }
2151 #endif /*!OSNAME*/
2152         }
2153
2154         mdoc->meta.os = mandoc_strdup(buf);
2155         return(1);
2156 }
2157
2158 static int
2159 post_std(POST_ARGS)
2160 {
2161         struct mdoc_node *nn, *n;
2162
2163         n = mdoc->last;
2164
2165         /*
2166          * Macros accepting `-std' as an argument have the name of the
2167          * current document (`Nm') filled in as the argument if it's not
2168          * provided.
2169          */
2170
2171         if (n->child)
2172                 return(1);
2173
2174         if (NULL == mdoc->meta.name)
2175                 return(1);
2176
2177         nn = n;
2178         mdoc->next = MDOC_NEXT_CHILD;
2179
2180         if ( ! mdoc_word_alloc(mdoc, n->line, n->pos, mdoc->meta.name))
2181                 return(0);
2182
2183         mdoc->last = nn;
2184         return(1);
2185 }
2186
2187 static int
2188 concat(struct mdoc *m, char *p, const struct mdoc_node *n, size_t sz)
2189 {
2190
2191         p[0] = '\0';
2192
2193         /*
2194          * Concatenate sibling nodes together.  All siblings must be of
2195          * type MDOC_TEXT or an assertion is raised.  Concatenation is
2196          * separated by a single whitespace.  Returns 0 on fatal (string
2197          * overrun) error.
2198          */
2199
2200         for ( ; n; n = n->next) {
2201                 assert(MDOC_TEXT == n->type);
2202
2203                 if (strlcat(p, n->string, sz) >= sz) {
2204                         mdoc_nmsg(m, n, MANDOCERR_MEM);
2205                         return(0);
2206                 }
2207
2208                 if (NULL == n->next)
2209                         continue;
2210
2211                 if (strlcat(p, " ", sz) >= sz) {
2212                         mdoc_nmsg(m, n, MANDOCERR_MEM);
2213                         return(0);
2214                 }
2215         }
2216
2217         return(1);
2218 }
2219