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1 /* $Id: mdoc_validate.c,v 1.133 2010/11/30 14:27:37 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 DATESIZ 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 /* Display elements (`Bd', `D1'...) cannot be nested. */
579
580 if (MDOC_BLOCK != n->type)
581 return(1);
582
583 /* LINTED */
584 for (node = mdoc->last->parent; node; node = node->parent)
585 if (MDOC_BLOCK == node->type)
586 if (MDOC_Bd == node->tok)
587 break;
588
589 if (NULL == node)
590 return(1);
591
592 mdoc_nmsg(mdoc, n, MANDOCERR_NESTEDDISP);
593 return(0);
594 }
595
596
597 static int
598 pre_bl(PRE_ARGS)
599 {
600 int i, comp, dup;
601 const char *offs, *width;
602 enum mdoc_list lt;
603 struct mdoc_node *np;
604
605 if (MDOC_BLOCK != n->type) {
606 if (ENDBODY_NOT != n->end) {
607 assert(n->pending);
608 np = n->pending->parent;
609 } else
610 np = n->parent;
611
612 assert(np);
613 assert(MDOC_BLOCK == np->type);
614 assert(MDOC_Bl == np->tok);
615 assert(np->data.Bl);
616 n->data.Bl = np->data.Bl;
617 return(1);
618 }
619
620 /*
621 * First figure out which kind of list to use: bind ourselves to
622 * the first mentioned list type and warn about any remaining
623 * ones. If we find no list type, we default to LIST_item.
624 */
625
626 assert(NULL == n->data.Bl);
627 n->data.Bl = mandoc_calloc(1, sizeof(struct mdoc_bl));
628
629 /* LINTED */
630 for (i = 0; n->args && i < (int)n->args->argc; i++) {
631 lt = LIST__NONE;
632 dup = comp = 0;
633 width = offs = NULL;
634 switch (n->args->argv[i].arg) {
635 /* Set list types. */
636 case (MDOC_Bullet):
637 lt = LIST_bullet;
638 break;
639 case (MDOC_Dash):
640 lt = LIST_dash;
641 break;
642 case (MDOC_Enum):
643 lt = LIST_enum;
644 break;
645 case (MDOC_Hyphen):
646 lt = LIST_hyphen;
647 break;
648 case (MDOC_Item):
649 lt = LIST_item;
650 break;
651 case (MDOC_Tag):
652 lt = LIST_tag;
653 break;
654 case (MDOC_Diag):
655 lt = LIST_diag;
656 break;
657 case (MDOC_Hang):
658 lt = LIST_hang;
659 break;
660 case (MDOC_Ohang):
661 lt = LIST_ohang;
662 break;
663 case (MDOC_Inset):
664 lt = LIST_inset;
665 break;
666 case (MDOC_Column):
667 lt = LIST_column;
668 break;
669 /* Set list arguments. */
670 case (MDOC_Compact):
671 dup = n->data.Bl->comp;
672 comp = 1;
673 break;
674 case (MDOC_Width):
675 dup = (NULL != n->data.Bl->width);
676 width = n->args->argv[i].value[0];
677 break;
678 case (MDOC_Offset):
679 /* NB: this can be empty! */
680 if (n->args->argv[i].sz) {
681 offs = n->args->argv[i].value[0];
682 dup = (NULL != n->data.Bl->offs);
683 break;
684 }
685 mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
686 break;
687 default:
688 continue;
689 }
690
691 /* Check: duplicate auxiliary arguments. */
692
693 if (dup)
694 mdoc_nmsg(mdoc, n, MANDOCERR_ARGVREP);
695
696 if (comp && ! dup)
697 n->data.Bl->comp = comp;
698 if (offs && ! dup)
699 n->data.Bl->offs = offs;
700 if (width && ! dup)
701 n->data.Bl->width = width;
702
703 /* Check: multiple list types. */
704
705 if (LIST__NONE != lt && n->data.Bl->type != LIST__NONE)
706 mdoc_nmsg(mdoc, n, MANDOCERR_LISTREP);
707
708 /* Assign list type. */
709
710 if (LIST__NONE != lt && n->data.Bl->type == LIST__NONE) {
711 n->data.Bl->type = lt;
712 /* Set column information, too. */
713 if (LIST_column == lt) {
714 n->data.Bl->ncols =
715 n->args->argv[i].sz;
716 n->data.Bl->cols = (const char **)
717 n->args->argv[i].value;
718 }
719 }
720
721 /* The list type should come first. */
722
723 if (n->data.Bl->type == LIST__NONE)
724 if (n->data.Bl->width ||
725 n->data.Bl->offs ||
726 n->data.Bl->comp)
727 mdoc_nmsg(mdoc, n, MANDOCERR_LISTFIRST);
728
729 continue;
730 }
731
732 /* Allow lists to default to LIST_item. */
733
734 if (LIST__NONE == n->data.Bl->type) {
735 mdoc_nmsg(mdoc, n, MANDOCERR_LISTTYPE);
736 n->data.Bl->type = LIST_item;
737 }
738
739 /*
740 * Validate the width field. Some list types don't need width
741 * types and should be warned about them. Others should have it
742 * and must also be warned.
743 */
744
745 switch (n->data.Bl->type) {
746 case (LIST_tag):
747 if (n->data.Bl->width)
748 break;
749 mdoc_nmsg(mdoc, n, MANDOCERR_NOWIDTHARG);
750 break;
751 case (LIST_column):
752 /* FALLTHROUGH */
753 case (LIST_diag):
754 /* FALLTHROUGH */
755 case (LIST_ohang):
756 /* FALLTHROUGH */
757 case (LIST_inset):
758 /* FALLTHROUGH */
759 case (LIST_item):
760 if (NULL == n->data.Bl->width)
761 break;
762 mdoc_nmsg(mdoc, n, MANDOCERR_WIDTHARG);
763 break;
764 default:
765 break;
766 }
767
768 return(1);
769 }
770
771
772 static int
773 pre_bd(PRE_ARGS)
774 {
775 int i, dup, comp;
776 enum mdoc_disp dt;
777 const char *offs;
778 struct mdoc_node *np;
779
780 if (MDOC_BLOCK != n->type) {
781 if (ENDBODY_NOT != n->end) {
782 assert(n->pending);
783 np = n->pending->parent;
784 } else
785 np = n->parent;
786
787 assert(np);
788 assert(MDOC_BLOCK == np->type);
789 assert(MDOC_Bd == np->tok);
790 assert(np->data.Bd);
791 n->data.Bd = np->data.Bd;
792 return(1);
793 }
794
795 assert(NULL == n->data.Bd);
796 n->data.Bd = mandoc_calloc(1, sizeof(struct mdoc_bd));
797
798 /* LINTED */
799 for (i = 0; n->args && i < (int)n->args->argc; i++) {
800 dt = DISP__NONE;
801 dup = comp = 0;
802 offs = NULL;
803
804 switch (n->args->argv[i].arg) {
805 case (MDOC_Centred):
806 dt = DISP_centred;
807 break;
808 case (MDOC_Ragged):
809 dt = DISP_ragged;
810 break;
811 case (MDOC_Unfilled):
812 dt = DISP_unfilled;
813 break;
814 case (MDOC_Filled):
815 dt = DISP_filled;
816 break;
817 case (MDOC_Literal):
818 dt = DISP_literal;
819 break;
820 case (MDOC_File):
821 mdoc_nmsg(mdoc, n, MANDOCERR_BADDISP);
822 return(0);
823 case (MDOC_Offset):
824 /* NB: this can be empty! */
825 if (n->args->argv[i].sz) {
826 offs = n->args->argv[i].value[0];
827 dup = (NULL != n->data.Bd->offs);
828 break;
829 }
830 mdoc_nmsg(mdoc, n, MANDOCERR_IGNARGV);
831 break;
832 case (MDOC_Compact):
833 comp = 1;
834 dup = n->data.Bd->comp;
835 break;
836 default:
837 abort();
838 /* NOTREACHED */
839 }
840
841 /* Check whether we have duplicates. */
842
843 if (dup)
844 mdoc_nmsg(mdoc, n, MANDOCERR_ARGVREP);
845
846 /* Make our auxiliary assignments. */
847
848 if (offs && ! dup)
849 n->data.Bd->offs = offs;
850 if (comp && ! dup)
851 n->data.Bd->comp = comp;
852
853 /* Check whether a type has already been assigned. */
854
855 if (DISP__NONE != dt && n->data.Bd->type != DISP__NONE)
856 mdoc_nmsg(mdoc, n, MANDOCERR_DISPREP);
857
858 /* Make our type assignment. */
859
860 if (DISP__NONE != dt && n->data.Bd->type == DISP__NONE)
861 n->data.Bd->type = dt;
862 }
863
864 if (DISP__NONE == n->data.Bd->type) {
865 mdoc_nmsg(mdoc, n, MANDOCERR_DISPTYPE);
866 n->data.Bd->type = DISP_ragged;
867 }
868
869 return(1);
870 }
871
872
873 static int
874 pre_ss(PRE_ARGS)
875 {
876
877 if (MDOC_BLOCK != n->type)
878 return(1);
879 return(check_parent(mdoc, n, MDOC_Sh, MDOC_BODY));
880 }
881
882
883 static int
884 pre_sh(PRE_ARGS)
885 {
886
887 if (MDOC_BLOCK != n->type)
888 return(1);
889
890 mdoc->regs->regs[(int)REG_nS].set = 0;
891 return(check_parent(mdoc, n, MDOC_MAX, MDOC_ROOT));
892 }
893
894
895 static int
896 pre_it(PRE_ARGS)
897 {
898
899 if (MDOC_BLOCK != n->type)
900 return(1);
901
902 /*
903 * FIXME: this can probably be lifted if we make the It into
904 * something else on-the-fly?
905 */
906 return(check_parent(mdoc, n, MDOC_Bl, MDOC_BODY));
907 }
908
909
910 static int
911 pre_an(PRE_ARGS)
912 {
913 int i;
914
915 if (NULL == n->args)
916 return(1);
917
918 for (i = 1; i < (int)n->args->argc; i++)
919 mdoc_pmsg(mdoc, n->args->argv[i].line,
920 n->args->argv[i].pos, MANDOCERR_IGNARGV);
921
922 if (MDOC_Split == n->args->argv[0].arg)
923 n->data.An.auth = AUTH_split;
924 else if (MDOC_Nosplit == n->args->argv[0].arg)
925 n->data.An.auth = AUTH_nosplit;
926 else
927 abort();
928
929 return(1);
930 }
931
932 static int
933 pre_std(PRE_ARGS)
934 {
935
936 if (n->args && 1 == n->args->argc)
937 if (MDOC_Std == n->args->argv[0].arg)
938 return(1);
939
940 mdoc_nmsg(mdoc, n, MANDOCERR_NOARGV);
941 return(1);
942 }
943
944 static int
945 pre_dt(PRE_ARGS)
946 {
947
948 if (0 == mdoc->meta.date || mdoc->meta.os)
949 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
950
951 if (mdoc->meta.title)
952 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
953
954 return(1);
955 }
956
957 static int
958 pre_os(PRE_ARGS)
959 {
960
961 if (NULL == mdoc->meta.title || 0 == mdoc->meta.date)
962 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
963
964 if (mdoc->meta.os)
965 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
966
967 return(1);
968 }
969
970 static int
971 pre_dd(PRE_ARGS)
972 {
973
974 if (mdoc->meta.title || mdoc->meta.os)
975 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGOOO);
976
977 if (mdoc->meta.date)
978 mdoc_nmsg(mdoc, n, MANDOCERR_PROLOGREP);
979
980 return(1);
981 }
982
983
984 static int
985 post_bf(POST_ARGS)
986 {
987 struct mdoc_node *np;
988 enum mdocargt arg;
989
990 /*
991 * Unlike other data pointers, these are "housed" by the HEAD
992 * element, which contains the goods.
993 */
994
995 if (MDOC_HEAD != mdoc->last->type) {
996 if (ENDBODY_NOT != mdoc->last->end) {
997 assert(mdoc->last->pending);
998 np = mdoc->last->pending->parent->head;
999 } else if (MDOC_BLOCK != mdoc->last->type) {
1000 np = mdoc->last->parent->head;
1001 } else
1002 np = mdoc->last->head;
1003
1004 assert(np);
1005 assert(MDOC_HEAD == np->type);
1006 assert(MDOC_Bf == np->tok);
1007 assert(np->data.Bf);
1008 mdoc->last->data.Bf = np->data.Bf;
1009 return(1);
1010 }
1011
1012 np = mdoc->last;
1013 assert(MDOC_BLOCK == np->parent->type);
1014 assert(MDOC_Bf == np->parent->tok);
1015 np->data.Bf = mandoc_calloc(1, sizeof(struct mdoc_bf));
1016
1017 /*
1018 * Cannot have both argument and parameter.
1019 * If neither is specified, let it through with a warning.
1020 */
1021
1022 if (np->parent->args && np->child) {
1023 mdoc_nmsg(mdoc, np, MANDOCERR_SYNTARGVCOUNT);
1024 return(0);
1025 } else if (NULL == np->parent->args && NULL == np->child) {
1026 mdoc_nmsg(mdoc, np, MANDOCERR_FONTTYPE);
1027 return(1);
1028 }
1029
1030 /* Extract argument into data. */
1031
1032 if (np->parent->args) {
1033 arg = np->parent->args->argv[0].arg;
1034 if (MDOC_Emphasis == arg)
1035 np->data.Bf->font = FONT_Em;
1036 else if (MDOC_Literal == arg)
1037 np->data.Bf->font = FONT_Li;
1038 else if (MDOC_Symbolic == arg)
1039 np->data.Bf->font = FONT_Sy;
1040 else
1041 abort();
1042 return(1);
1043 }
1044
1045 /* Extract parameter into data. */
1046
1047 if (0 == strcmp(np->child->string, "Em"))
1048 np->data.Bf->font = FONT_Em;
1049 else if (0 == strcmp(np->child->string, "Li"))
1050 np->data.Bf->font = FONT_Li;
1051 else if (0 == strcmp(np->child->string, "Sy"))
1052 np->data.Bf->font = FONT_Sy;
1053 else
1054 mdoc_nmsg(mdoc, np, MANDOCERR_FONTTYPE);
1055
1056 return(1);
1057 }
1058
1059 static int
1060 post_lb(POST_ARGS)
1061 {
1062 const char *p;
1063 char *buf;
1064 size_t sz;
1065
1066 assert(mdoc->last->child);
1067 assert(MDOC_TEXT == mdoc->last->child->type);
1068
1069 p = mdoc_a2lib(mdoc->last->child->string);
1070
1071 /* If lookup ok, replace with table value. */
1072
1073 if (p) {
1074 free(mdoc->last->child->string);
1075 mdoc->last->child->string = mandoc_strdup(p);
1076 return(1);
1077 }
1078
1079 /* If not, use "library ``xxxx''. */
1080
1081 sz = strlen(mdoc->last->child->string) +
1082 2 + strlen("\\(lqlibrary\\(rq");
1083 buf = mandoc_malloc(sz);
1084 snprintf(buf, sz, "library \\(lq%s\\(rq",
1085 mdoc->last->child->string);
1086 free(mdoc->last->child->string);
1087 mdoc->last->child->string = buf;
1088 return(1);
1089 }
1090
1091 static int
1092 post_eoln(POST_ARGS)
1093 {
1094
1095 if (mdoc->last->child)
1096 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_ARGSLOST);
1097 return(1);
1098 }
1099
1100
1101 static int
1102 post_vt(POST_ARGS)
1103 {
1104 const struct mdoc_node *n;
1105
1106 /*
1107 * The Vt macro comes in both ELEM and BLOCK form, both of which
1108 * have different syntaxes (yet more context-sensitive
1109 * behaviour). ELEM types must have a child; BLOCK types,
1110 * specifically the BODY, should only have TEXT children.
1111 */
1112
1113 if (MDOC_ELEM == mdoc->last->type)
1114 return(eerr_ge1(mdoc));
1115 if (MDOC_BODY != mdoc->last->type)
1116 return(1);
1117
1118 for (n = mdoc->last->child; n; n = n->next)
1119 if (MDOC_TEXT != n->type)
1120 mdoc_nmsg(mdoc, n, MANDOCERR_CHILD);
1121
1122 return(1);
1123 }
1124
1125
1126 static int
1127 post_nm(POST_ARGS)
1128 {
1129 char buf[BUFSIZ];
1130
1131 /* If no child specified, make sure we have the meta name. */
1132
1133 if (NULL == mdoc->last->child && NULL == mdoc->meta.name) {
1134 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NONAME);
1135 return(1);
1136 } else if (mdoc->meta.name)
1137 return(1);
1138
1139 /* If no meta name, set it from the child. */
1140
1141 if ( ! concat(mdoc, buf, mdoc->last->child, BUFSIZ))
1142 return(0);
1143
1144 mdoc->meta.name = mandoc_strdup(buf);
1145
1146 return(1);
1147 }
1148
1149 static int
1150 post_literal(POST_ARGS)
1151 {
1152
1153 /*
1154 * The `Dl' (note "el" not "one") and `Bd' macros unset the
1155 * MDOC_LITERAL flag as they leave. Note that `Bd' only sets
1156 * this in literal mode, but it doesn't hurt to just switch it
1157 * off in general since displays can't be nested.
1158 */
1159
1160 if (MDOC_BODY == mdoc->last->type)
1161 mdoc->last->flags &= ~MDOC_LITERAL;
1162
1163 return(1);
1164 }
1165
1166 static int
1167 post_defaults(POST_ARGS)
1168 {
1169 struct mdoc_node *nn;
1170
1171 /*
1172 * The `Ar' defaults to "file ..." if no value is provided as an
1173 * argument; the `Mt' and `Pa' macros use "~"; the `Li' just
1174 * gets an empty string.
1175 */
1176
1177 if (mdoc->last->child)
1178 return(1);
1179
1180 nn = mdoc->last;
1181 mdoc->next = MDOC_NEXT_CHILD;
1182
1183 switch (nn->tok) {
1184 case (MDOC_Ar):
1185 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "file"))
1186 return(0);
1187 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "..."))
1188 return(0);
1189 break;
1190 case (MDOC_At):
1191 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "AT&T"))
1192 return(0);
1193 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "UNIX"))
1194 return(0);
1195 break;
1196 case (MDOC_Li):
1197 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, ""))
1198 return(0);
1199 break;
1200 case (MDOC_Pa):
1201 /* FALLTHROUGH */
1202 case (MDOC_Mt):
1203 if ( ! mdoc_word_alloc(mdoc, nn->line, nn->pos, "~"))
1204 return(0);
1205 break;
1206 default:
1207 abort();
1208 /* NOTREACHED */
1209 }
1210
1211 mdoc->last = nn;
1212 return(1);
1213 }
1214
1215 static int
1216 post_at(POST_ARGS)
1217 {
1218 const char *p, *q;
1219 char *buf;
1220 size_t sz;
1221
1222 /*
1223 * If we have a child, look it up in the standard keys. If a
1224 * key exist, use that instead of the child; if it doesn't,
1225 * prefix "AT&T UNIX " to the existing data.
1226 */
1227
1228 if (NULL == mdoc->last->child)
1229 return(1);
1230
1231 assert(MDOC_TEXT == mdoc->last->child->type);
1232 p = mdoc_a2att(mdoc->last->child->string);
1233
1234 if (p) {
1235 free(mdoc->last->child->string);
1236 mdoc->last->child->string = mandoc_strdup(p);
1237 } else {
1238 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADATT);
1239 p = "AT&T UNIX ";
1240 q = mdoc->last->child->string;
1241 sz = strlen(p) + strlen(q) + 1;
1242 buf = mandoc_malloc(sz);
1243 strlcpy(buf, p, sz);
1244 strlcat(buf, q, sz);
1245 free(mdoc->last->child->string);
1246 mdoc->last->child->string = buf;
1247 }
1248
1249 return(1);
1250 }
1251
1252 static int
1253 post_an(POST_ARGS)
1254 {
1255 struct mdoc_node *np;
1256
1257 np = mdoc->last;
1258 if (AUTH__NONE != np->data.An.auth && np->child)
1259 return(eerr_eq0(mdoc));
1260
1261 /*
1262 * FIXME: make this ewarn and make sure that the front-ends
1263 * don't print the arguments.
1264 */
1265 if (AUTH__NONE != np->data.An.auth || np->child)
1266 return(1);
1267
1268 mdoc_nmsg(mdoc, np, MANDOCERR_NOARGS);
1269 return(1);
1270 }
1271
1272
1273 static int
1274 post_it(POST_ARGS)
1275 {
1276 int i, cols, rc;
1277 enum mdoc_list lt;
1278 struct mdoc_node *n, *c;
1279 enum mandocerr er;
1280
1281 if (MDOC_BLOCK != mdoc->last->type)
1282 return(1);
1283
1284 n = mdoc->last->parent->parent;
1285 assert(n->data.Bl);
1286 lt = n->data.Bl->type;
1287
1288 if (LIST__NONE == lt) {
1289 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_LISTTYPE);
1290 return(1);
1291 }
1292
1293 switch (lt) {
1294 case (LIST_tag):
1295 if (mdoc->last->head->child)
1296 break;
1297 /* FIXME: give this a dummy value. */
1298 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOARGS);
1299 break;
1300 case (LIST_hang):
1301 /* FALLTHROUGH */
1302 case (LIST_ohang):
1303 /* FALLTHROUGH */
1304 case (LIST_inset):
1305 /* FALLTHROUGH */
1306 case (LIST_diag):
1307 if (NULL == mdoc->last->head->child)
1308 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOARGS);
1309 break;
1310 case (LIST_bullet):
1311 /* FALLTHROUGH */
1312 case (LIST_dash):
1313 /* FALLTHROUGH */
1314 case (LIST_enum):
1315 /* FALLTHROUGH */
1316 case (LIST_hyphen):
1317 if (NULL == mdoc->last->body->child)
1318 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOBODY);
1319 /* FALLTHROUGH */
1320 case (LIST_item):
1321 if (mdoc->last->head->child)
1322 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_ARGSLOST);
1323 break;
1324 case (LIST_column):
1325 cols = (int)n->data.Bl->ncols;
1326
1327 assert(NULL == mdoc->last->head->child);
1328
1329 if (NULL == mdoc->last->body->child)
1330 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NOBODY);
1331
1332 for (i = 0, c = mdoc->last->child; c; c = c->next)
1333 if (MDOC_BODY == c->type)
1334 i++;
1335
1336 if (i < cols)
1337 er = MANDOCERR_ARGCOUNT;
1338 else if (i == cols || i == cols + 1)
1339 break;
1340 else
1341 er = MANDOCERR_SYNTARGCOUNT;
1342
1343 rc = mdoc_vmsg(mdoc, er,
1344 mdoc->last->line, mdoc->last->pos,
1345 "columns == %d (have %d)", cols, i);
1346 return(rc);
1347 default:
1348 break;
1349 }
1350
1351 return(1);
1352 }
1353
1354 static int
1355 post_bl_block(POST_ARGS)
1356 {
1357 struct mdoc_node *n;
1358
1359 /*
1360 * These are fairly complicated, so we've broken them into two
1361 * functions. post_bl_block_tag() is called when a -tag is
1362 * specified, but no -width (it must be guessed). The second
1363 * when a -width is specified (macro indicators must be
1364 * rewritten into real lengths).
1365 */
1366
1367 n = mdoc->last;
1368
1369 if (LIST_tag == n->data.Bl->type &&
1370 NULL == n->data.Bl->width) {
1371 if ( ! post_bl_block_tag(mdoc))
1372 return(0);
1373 } else if (NULL != n->data.Bl->width) {
1374 if ( ! post_bl_block_width(mdoc))
1375 return(0);
1376 } else
1377 return(1);
1378
1379 assert(n->data.Bl->width);
1380 return(1);
1381 }
1382
1383 static int
1384 post_bl_block_width(POST_ARGS)
1385 {
1386 size_t width;
1387 int i;
1388 enum mdoct tok;
1389 struct mdoc_node *n;
1390 char buf[NUMSIZ];
1391
1392 n = mdoc->last;
1393
1394 /*
1395 * Calculate the real width of a list from the -width string,
1396 * which may contain a macro (with a known default width), a
1397 * literal string, or a scaling width.
1398 *
1399 * If the value to -width is a macro, then we re-write it to be
1400 * the macro's width as set in share/tmac/mdoc/doc-common.
1401 */
1402
1403 if (0 == strcmp(n->data.Bl->width, "Ds"))
1404 width = 6;
1405 else if (MDOC_MAX == (tok = mdoc_hash_find(n->data.Bl->width)))
1406 return(1);
1407 else if (0 == (width = mdoc_macro2len(tok))) {
1408 mdoc_nmsg(mdoc, n, MANDOCERR_BADWIDTH);
1409 return(1);
1410 }
1411
1412 /* The value already exists: free and reallocate it. */
1413
1414 assert(n->args);
1415
1416 for (i = 0; i < (int)n->args->argc; i++)
1417 if (MDOC_Width == n->args->argv[i].arg)
1418 break;
1419
1420 assert(i < (int)n->args->argc);
1421
1422 snprintf(buf, NUMSIZ, "%zun", width);
1423 free(n->args->argv[i].value[0]);
1424 n->args->argv[i].value[0] = mandoc_strdup(buf);
1425
1426 /* Set our width! */
1427 n->data.Bl->width = n->args->argv[i].value[0];
1428 return(1);
1429 }
1430
1431 static int
1432 post_bl_block_tag(POST_ARGS)
1433 {
1434 struct mdoc_node *n, *nn;
1435 size_t sz, ssz;
1436 int i;
1437 char buf[NUMSIZ];
1438
1439 /*
1440 * Calculate the -width for a `Bl -tag' list if it hasn't been
1441 * provided. Uses the first head macro. NOTE AGAIN: this is
1442 * ONLY if the -width argument has NOT been provided. See
1443 * post_bl_block_width() for converting the -width string.
1444 */
1445
1446 sz = 10;
1447 n = mdoc->last;
1448
1449 for (nn = n->body->child; nn; nn = nn->next) {
1450 if (MDOC_It != nn->tok)
1451 continue;
1452
1453 assert(MDOC_BLOCK == nn->type);
1454 nn = nn->head->child;
1455
1456 if (nn == NULL) {
1457 /* No -width for .Bl and first .It is emtpy */
1458 mdoc_nmsg(mdoc, n, MANDOCERR_NOWIDTHARG);
1459 break;
1460 }
1461
1462 if (MDOC_TEXT == nn->type) {
1463 sz = strlen(nn->string) + 1;
1464 break;
1465 }
1466
1467 if (0 != (ssz = mdoc_macro2len(nn->tok)))
1468 sz = ssz;
1469 else
1470 mdoc_nmsg(mdoc, n, MANDOCERR_NOWIDTHARG);
1471
1472 break;
1473 }
1474
1475 /* Defaults to ten ens. */
1476
1477 snprintf(buf, NUMSIZ, "%zun", sz);
1478
1479 /*
1480 * We have to dynamically add this to the macro's argument list.
1481 * We're guaranteed that a MDOC_Width doesn't already exist.
1482 */
1483
1484 assert(n->args);
1485 i = (int)(n->args->argc)++;
1486
1487 n->args->argv = mandoc_realloc(n->args->argv,
1488 n->args->argc * sizeof(struct mdoc_argv));
1489
1490 n->args->argv[i].arg = MDOC_Width;
1491 n->args->argv[i].line = n->line;
1492 n->args->argv[i].pos = n->pos;
1493 n->args->argv[i].sz = 1;
1494 n->args->argv[i].value = mandoc_malloc(sizeof(char *));
1495 n->args->argv[i].value[0] = mandoc_strdup(buf);
1496
1497 /* Set our width! */
1498 n->data.Bl->width = n->args->argv[i].value[0];
1499 return(1);
1500 }
1501
1502
1503 static int
1504 post_bl_head(POST_ARGS)
1505 {
1506 struct mdoc_node *np, *nn, *nnp;
1507 int i, j;
1508
1509 if (LIST_column != mdoc->last->data.Bl->type)
1510 /* FIXME: this should be ERROR class... */
1511 return(hwarn_eq0(mdoc));
1512
1513 /*
1514 * Convert old-style lists, where the column width specifiers
1515 * trail as macro parameters, to the new-style ("normal-form")
1516 * lists where they're argument values following -column.
1517 */
1518
1519 /* First, disallow both types and allow normal-form. */
1520
1521 /*
1522 * TODO: technically, we can accept both and just merge the two
1523 * lists, but I'll leave that for another day.
1524 */
1525
1526 if (mdoc->last->data.Bl->ncols && mdoc->last->nchild) {
1527 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_COLUMNS);
1528 return(0);
1529 } else if (NULL == mdoc->last->child)
1530 return(1);
1531
1532 np = mdoc->last->parent;
1533 assert(np->args);
1534
1535 for (j = 0; j < (int)np->args->argc; j++)
1536 if (MDOC_Column == np->args->argv[j].arg)
1537 break;
1538
1539 assert(j < (int)np->args->argc);
1540 assert(0 == np->args->argv[j].sz);
1541
1542 /*
1543 * Accomodate for new-style groff column syntax. Shuffle the
1544 * child nodes, all of which must be TEXT, as arguments for the
1545 * column field. Then, delete the head children.
1546 */
1547
1548 np->args->argv[j].sz = (size_t)mdoc->last->nchild;
1549 np->args->argv[j].value = mandoc_malloc
1550 ((size_t)mdoc->last->nchild * sizeof(char *));
1551
1552 mdoc->last->data.Bl->ncols = np->args->argv[j].sz;
1553 mdoc->last->data.Bl->cols = (const char **)np->args->argv[j].value;
1554
1555 for (i = 0, nn = mdoc->last->child; nn; i++) {
1556 np->args->argv[j].value[i] = nn->string;
1557 nn->string = NULL;
1558 nnp = nn;
1559 nn = nn->next;
1560 mdoc_node_delete(NULL, nnp);
1561 }
1562
1563 mdoc->last->nchild = 0;
1564 mdoc->last->child = NULL;
1565
1566 return(1);
1567 }
1568
1569 static int
1570 post_bl(POST_ARGS)
1571 {
1572 struct mdoc_node *n;
1573
1574 if (MDOC_HEAD == mdoc->last->type)
1575 return(post_bl_head(mdoc));
1576 if (MDOC_BLOCK == mdoc->last->type)
1577 return(post_bl_block(mdoc));
1578 if (MDOC_BODY != mdoc->last->type)
1579 return(1);
1580 if (NULL == mdoc->last->child)
1581 return(1);
1582
1583 /*
1584 * We only allow certain children of `Bl'. This is usually on
1585 * `It', but apparently `Sm' occurs here and there, so we let
1586 * that one through, too.
1587 */
1588
1589 /* LINTED */
1590 for (n = mdoc->last->child; n; n = n->next) {
1591 if (MDOC_BLOCK == n->type && MDOC_It == n->tok)
1592 continue;
1593 if (MDOC_Sm == n->tok)
1594 continue;
1595 mdoc_nmsg(mdoc, n, MANDOCERR_SYNTCHILD);
1596 return(0);
1597 }
1598
1599 return(1);
1600 }
1601
1602 static int
1603 ebool(struct mdoc *mdoc)
1604 {
1605
1606 if (NULL == mdoc->last->child)
1607 return(1);
1608
1609 assert(MDOC_TEXT == mdoc->last->child->type);
1610
1611 if (0 == strcmp(mdoc->last->child->string, "on"))
1612 return(1);
1613 if (0 == strcmp(mdoc->last->child->string, "off"))
1614 return(1);
1615
1616 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADBOOL);
1617 return(1);
1618 }
1619
1620 static int
1621 post_root(POST_ARGS)
1622 {
1623 int erc;
1624 struct mdoc_node *n;
1625
1626 erc = 0;
1627
1628 /* Check that we have a finished prologue. */
1629
1630 if ( ! (MDOC_PBODY & mdoc->flags)) {
1631 erc++;
1632 mdoc_nmsg(mdoc, mdoc->first, MANDOCERR_NODOCPROLOG);
1633 }
1634
1635 n = mdoc->first;
1636 assert(n);
1637
1638 /* Check that we begin with a proper `Sh'. */
1639
1640 if (NULL == n->child) {
1641 erc++;
1642 mdoc_nmsg(mdoc, n, MANDOCERR_NODOCBODY);
1643 } else if (MDOC_BLOCK != n->child->type ||
1644 MDOC_Sh != n->child->tok) {
1645 erc++;
1646 /* Can this be lifted? See rxdebug.1 for example. */
1647 mdoc_nmsg(mdoc, n, MANDOCERR_NODOCBODY);
1648 }
1649
1650 return(erc ? 0 : 1);
1651 }
1652
1653 static int
1654 post_st(POST_ARGS)
1655 {
1656 const char *p;
1657
1658 assert(MDOC_TEXT == mdoc->last->child->type);
1659
1660 p = mdoc_a2st(mdoc->last->child->string);
1661
1662 if (p == NULL) {
1663 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADSTANDARD);
1664 mdoc_node_delete(mdoc, mdoc->last);
1665 } else {
1666 free(mdoc->last->child->string);
1667 mdoc->last->child->string = mandoc_strdup(p);
1668 }
1669
1670 return(1);
1671 }
1672
1673 static int
1674 post_rs(POST_ARGS)
1675 {
1676 struct mdoc_node *nn, *next, *prev;
1677 int i, j;
1678
1679 if (MDOC_BODY != mdoc->last->type)
1680 return(1);
1681
1682 /*
1683 * Make sure only certain types of nodes are allowed within the
1684 * the `Rs' body. Delete offending nodes and raise a warning.
1685 * Do this before re-ordering for the sake of clarity.
1686 */
1687
1688 next = NULL;
1689 for (nn = mdoc->last->child; nn; nn = next) {
1690 for (i = 0; i < RSORD_MAX; i++)
1691 if (nn->tok == rsord[i])
1692 break;
1693
1694 if (i < RSORD_MAX) {
1695 next = nn->next;
1696 continue;
1697 }
1698
1699 next = nn->next;
1700 mdoc_nmsg(mdoc, nn, MANDOCERR_CHILD);
1701 mdoc_node_delete(mdoc, nn);
1702 }
1703
1704 /*
1705 * The full `Rs' block needs special handling to order the
1706 * sub-elements according to `rsord'. Pick through each element
1707 * and correctly order it. This is a insertion sort.
1708 */
1709
1710 next = NULL;
1711 for (nn = mdoc->last->child->next; nn; nn = next) {
1712 /* Determine order of `nn'. */
1713 for (i = 0; i < RSORD_MAX; i++)
1714 if (rsord[i] == nn->tok)
1715 break;
1716
1717 /*
1718 * Remove `nn' from the chain. This somewhat
1719 * repeats mdoc_node_unlink(), but since we're
1720 * just re-ordering, there's no need for the
1721 * full unlink process.
1722 */
1723
1724 if (NULL != (next = nn->next))
1725 next->prev = nn->prev;
1726
1727 if (NULL != (prev = nn->prev))
1728 prev->next = nn->next;
1729
1730 nn->prev = nn->next = NULL;
1731
1732 /*
1733 * Scan back until we reach a node that's
1734 * ordered before `nn'.
1735 */
1736
1737 for ( ; prev ; prev = prev->prev) {
1738 /* Determine order of `prev'. */
1739 for (j = 0; j < RSORD_MAX; j++)
1740 if (rsord[j] == prev->tok)
1741 break;
1742
1743 if (j <= i)
1744 break;
1745 }
1746
1747 /*
1748 * Set `nn' back into its correct place in front
1749 * of the `prev' node.
1750 */
1751
1752 nn->prev = prev;
1753
1754 if (prev) {
1755 if (prev->next)
1756 prev->next->prev = nn;
1757 nn->next = prev->next;
1758 prev->next = nn;
1759 } else {
1760 mdoc->last->child->prev = nn;
1761 nn->next = mdoc->last->child;
1762 mdoc->last->child = nn;
1763 }
1764 }
1765
1766 return(1);
1767 }
1768
1769 static int
1770 post_sh(POST_ARGS)
1771 {
1772
1773 if (MDOC_HEAD == mdoc->last->type)
1774 return(post_sh_head(mdoc));
1775 if (MDOC_BODY == mdoc->last->type)
1776 return(post_sh_body(mdoc));
1777
1778 return(1);
1779 }
1780
1781 static int
1782 post_sh_body(POST_ARGS)
1783 {
1784 struct mdoc_node *n;
1785
1786 if (SEC_NAME != mdoc->lastsec)
1787 return(1);
1788
1789 /*
1790 * Warn if the NAME section doesn't contain the `Nm' and `Nd'
1791 * macros (can have multiple `Nm' and one `Nd'). Note that the
1792 * children of the BODY declaration can also be "text".
1793 */
1794
1795 if (NULL == (n = mdoc->last->child)) {
1796 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
1797 return(1);
1798 }
1799
1800 for ( ; n && n->next; n = n->next) {
1801 if (MDOC_ELEM == n->type && MDOC_Nm == n->tok)
1802 continue;
1803 if (MDOC_TEXT == n->type)
1804 continue;
1805 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
1806 }
1807
1808 assert(n);
1809 if (MDOC_BLOCK == n->type && MDOC_Nd == n->tok)
1810 return(1);
1811
1812 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_BADNAMESEC);
1813 return(1);
1814 }
1815
1816 static int
1817 post_sh_head(POST_ARGS)
1818 {
1819 char buf[BUFSIZ];
1820 enum mdoc_sec sec;
1821
1822 /*
1823 * Process a new section. Sections are either "named" or
1824 * "custom". Custom sections are user-defined, while named ones
1825 * follow a conventional order and may only appear in certain
1826 * manual sections.
1827 */
1828
1829 if ( ! concat(mdoc, buf, mdoc->last->child, BUFSIZ))
1830 return(0);
1831
1832 sec = mdoc_str2sec(buf);
1833
1834 /* The NAME should be first. */
1835
1836 if (SEC_NAME != sec && SEC_NONE == mdoc->lastnamed)
1837 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NAMESECFIRST);
1838
1839 /* The SYNOPSIS gets special attention in other areas. */
1840
1841 if (SEC_SYNOPSIS == sec)
1842 mdoc->flags |= MDOC_SYNOPSIS;
1843 else
1844 mdoc->flags &= ~MDOC_SYNOPSIS;
1845
1846 /* Mark our last section. */
1847
1848 mdoc->lastsec = sec;
1849
1850 /* We don't care about custom sections after this. */
1851
1852 if (SEC_CUSTOM == sec)
1853 return(1);
1854
1855 /*
1856 * Check whether our non-custom section is being repeated or is
1857 * out of order.
1858 */
1859
1860 if (sec == mdoc->lastnamed)
1861 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_SECREP);
1862
1863 if (sec < mdoc->lastnamed)
1864 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_SECOOO);
1865
1866 /* Mark the last named section. */
1867
1868 mdoc->lastnamed = sec;
1869
1870 /* Check particular section/manual conventions. */
1871
1872 assert(mdoc->meta.msec);
1873
1874 switch (sec) {
1875 case (SEC_RETURN_VALUES):
1876 /* FALLTHROUGH */
1877 case (SEC_ERRORS):
1878 /* FALLTHROUGH */
1879 case (SEC_LIBRARY):
1880 if (*mdoc->meta.msec == '2')
1881 break;
1882 if (*mdoc->meta.msec == '3')
1883 break;
1884 if (*mdoc->meta.msec == '9')
1885 break;
1886 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_SECMSEC);
1887 break;
1888 default:
1889 break;
1890 }
1891
1892 return(1);
1893 }
1894
1895 static int
1896 pre_par(PRE_ARGS)
1897 {
1898
1899 if (NULL == mdoc->last)
1900 return(1);
1901
1902 /*
1903 * Don't allow prior `Lp' or `Pp' prior to a paragraph-type
1904 * block: `Lp', `Pp', or non-compact `Bd' or `Bl'.
1905 */
1906
1907 if (MDOC_Pp != mdoc->last->tok && MDOC_Lp != mdoc->last->tok)
1908 return(1);
1909
1910 if (MDOC_Bl == n->tok && n->data.Bl->comp)
1911 return(1);
1912 if (MDOC_Bd == n->tok && n->data.Bd->comp)
1913 return(1);
1914
1915 mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_IGNPAR);
1916 mdoc_node_delete(mdoc, mdoc->last);
1917 return(1);
1918 }
1919
1920 static int
1921 pre_literal(PRE_ARGS)
1922 {
1923
1924 if (MDOC_BODY != n->type)
1925 return(1);
1926
1927 /*
1928 * The `Dl' (note "el" not "one") and `Bd -literal' and `Bd
1929 * -unfilled' macros set MDOC_LITERAL on entrance to the body.
1930 */
1931
1932 switch (n->tok) {
1933 case (MDOC_Dl):
1934 mdoc->flags |= MDOC_LITERAL;
1935 break;
1936 case (MDOC_Bd):
1937 assert(n->data.Bd);
1938 if (DISP_literal == n->data.Bd->type)
1939 mdoc->flags |= MDOC_LITERAL;
1940 if (DISP_unfilled == n->data.Bd->type)
1941 mdoc->flags |= MDOC_LITERAL;
1942 break;
1943 default:
1944 abort();
1945 /* NOTREACHED */
1946 }
1947
1948 return(1);
1949 }
1950
1951 static int
1952 post_dd(POST_ARGS)
1953 {
1954 char buf[DATESIZ];
1955 struct mdoc_node *n;
1956
1957 n = mdoc->last;
1958
1959 if (NULL == n->child) {
1960 mdoc->meta.date = time(NULL);
1961 return(1);
1962 }
1963
1964 if ( ! concat(mdoc, buf, n->child, DATESIZ))
1965 return(0);
1966
1967 mdoc->meta.date = mandoc_a2time
1968 (MTIME_MDOCDATE | MTIME_CANONICAL, buf);
1969
1970 if (0 == mdoc->meta.date) {
1971 mdoc_nmsg(mdoc, n, MANDOCERR_BADDATE);
1972 mdoc->meta.date = time(NULL);
1973 }
1974
1975 return(1);
1976 }
1977
1978 static int
1979 post_dt(POST_ARGS)
1980 {
1981 struct mdoc_node *nn, *n;
1982 const char *cp;
1983 char *p;
1984
1985 n = mdoc->last;
1986
1987 if (mdoc->meta.title)
1988 free(mdoc->meta.title);
1989 if (mdoc->meta.vol)
1990 free(mdoc->meta.vol);
1991 if (mdoc->meta.arch)
1992 free(mdoc->meta.arch);
1993
1994 mdoc->meta.title = mdoc->meta.vol = mdoc->meta.arch = NULL;
1995
1996 /* First make all characters uppercase. */
1997
1998 if (NULL != (nn = n->child))
1999 for (p = nn->string; *p; p++) {
2000 if (toupper((u_char)*p) == *p)
2001 continue;
2002
2003 /*
2004 * FIXME: don't be lazy: have this make all
2005 * characters be uppercase and just warn once.
2006 */
2007 mdoc_nmsg(mdoc, nn, MANDOCERR_UPPERCASE);
2008 break;
2009 }
2010
2011 /* Handles: `.Dt'
2012 * --> title = unknown, volume = local, msec = 0, arch = NULL
2013 */
2014
2015 if (NULL == (nn = n->child)) {
2016 /* XXX: make these macro values. */
2017 /* FIXME: warn about missing values. */
2018 mdoc->meta.title = mandoc_strdup("UNKNOWN");
2019 mdoc->meta.vol = mandoc_strdup("LOCAL");
2020 mdoc->meta.msec = mandoc_strdup("1");
2021 return(1);
2022 }
2023
2024 /* Handles: `.Dt TITLE'
2025 * --> title = TITLE, volume = local, msec = 0, arch = NULL
2026 */
2027
2028 mdoc->meta.title = mandoc_strdup
2029 ('\0' == nn->string[0] ? "UNKNOWN" : nn->string);
2030
2031 if (NULL == (nn = nn->next)) {
2032 /* FIXME: warn about missing msec. */
2033 /* XXX: make this a macro value. */
2034 mdoc->meta.vol = mandoc_strdup("LOCAL");
2035 mdoc->meta.msec = mandoc_strdup("1");
2036 return(1);
2037 }
2038
2039 /* Handles: `.Dt TITLE SEC'
2040 * --> title = TITLE, volume = SEC is msec ?
2041 * format(msec) : SEC,
2042 * msec = SEC is msec ? atoi(msec) : 0,
2043 * arch = NULL
2044 */
2045
2046 cp = mdoc_a2msec(nn->string);
2047 if (cp) {
2048 mdoc->meta.vol = mandoc_strdup(cp);
2049 mdoc->meta.msec = mandoc_strdup(nn->string);
2050 } else {
2051 mdoc_nmsg(mdoc, n, MANDOCERR_BADMSEC);
2052 mdoc->meta.vol = mandoc_strdup(nn->string);
2053 mdoc->meta.msec = mandoc_strdup(nn->string);
2054 }
2055
2056 if (NULL == (nn = nn->next))
2057 return(1);
2058
2059 /* Handles: `.Dt TITLE SEC VOL'
2060 * --> title = TITLE, volume = VOL is vol ?
2061 * format(VOL) :
2062 * VOL is arch ? format(arch) :
2063 * VOL
2064 */
2065
2066 cp = mdoc_a2vol(nn->string);
2067 if (cp) {
2068 free(mdoc->meta.vol);
2069 mdoc->meta.vol = mandoc_strdup(cp);
2070 } else {
2071 /* FIXME: warn about bad arch. */
2072 cp = mdoc_a2arch(nn->string);
2073 if (NULL == cp) {
2074 free(mdoc->meta.vol);
2075 mdoc->meta.vol = mandoc_strdup(nn->string);
2076 } else
2077 mdoc->meta.arch = mandoc_strdup(cp);
2078 }
2079
2080 /* Ignore any subsequent parameters... */
2081 /* FIXME: warn about subsequent parameters. */
2082
2083 return(1);
2084 }
2085
2086 static int
2087 post_prol(POST_ARGS)
2088 {
2089 /*
2090 * Remove prologue macros from the document after they're
2091 * processed. The final document uses mdoc_meta for these
2092 * values and discards the originals.
2093 */
2094
2095 mdoc_node_delete(mdoc, mdoc->last);
2096 if (mdoc->meta.title && mdoc->meta.date && mdoc->meta.os)
2097 mdoc->flags |= MDOC_PBODY;
2098
2099 return(1);
2100 }
2101
2102 static int
2103 post_os(POST_ARGS)
2104 {
2105 struct mdoc_node *n;
2106 char buf[BUFSIZ];
2107 #ifndef OSNAME
2108 struct utsname utsname;
2109 #endif
2110
2111 n = mdoc->last;
2112
2113 /*
2114 * Set the operating system by way of the `Os' macro. Note that
2115 * if an argument isn't provided and -DOSNAME="\"foo\"" is
2116 * provided during compilation, this value will be used instead
2117 * of filling in "sysname release" from uname().
2118 */
2119
2120 if (mdoc->meta.os)
2121 free(mdoc->meta.os);
2122
2123 if ( ! concat(mdoc, buf, n->child, BUFSIZ))
2124 return(0);
2125
2126 /* XXX: yes, these can all be dynamically-adjusted buffers, but
2127 * it's really not worth the extra hackery.
2128 */
2129
2130 if ('\0' == buf[0]) {
2131 #ifdef OSNAME
2132 if (strlcat(buf, OSNAME, BUFSIZ) >= BUFSIZ) {
2133 mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
2134 return(0);
2135 }
2136 #else /*!OSNAME */
2137 if (-1 == uname(&utsname))
2138 return(mdoc_nmsg(mdoc, n, MANDOCERR_UTSNAME));
2139
2140 if (strlcat(buf, utsname.sysname, BUFSIZ) >= BUFSIZ) {
2141 mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
2142 return(0);
2143 }
2144 if (strlcat(buf, " ", 64) >= BUFSIZ) {
2145 mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
2146 return(0);
2147 }
2148 if (strlcat(buf, utsname.release, BUFSIZ) >= BUFSIZ) {
2149 mdoc_nmsg(mdoc, n, MANDOCERR_MEM);
2150 return(0);
2151 }
2152 #endif /*!OSNAME*/
2153 }
2154
2155 mdoc->meta.os = mandoc_strdup(buf);
2156 return(1);
2157 }
2158
2159 static int
2160 post_std(POST_ARGS)
2161 {
2162 struct mdoc_node *nn, *n;
2163
2164 n = mdoc->last;
2165
2166 /*
2167 * Macros accepting `-std' as an argument have the name of the
2168 * current document (`Nm') filled in as the argument if it's not
2169 * provided.
2170 */
2171
2172 if (n->child)
2173 return(1);
2174
2175 if (NULL == mdoc->meta.name)
2176 return(1);
2177
2178 nn = n;
2179 mdoc->next = MDOC_NEXT_CHILD;
2180
2181 if ( ! mdoc_word_alloc(mdoc, n->line, n->pos, mdoc->meta.name))
2182 return(0);
2183
2184 mdoc->last = nn;
2185 return(1);
2186 }
2187
2188 static int
2189 concat(struct mdoc *m, char *p, const struct mdoc_node *n, size_t sz)
2190 {
2191
2192 p[0] = '\0';
2193
2194 /*
2195 * Concatenate sibling nodes together. All siblings must be of
2196 * type MDOC_TEXT or an assertion is raised. Concatenation is
2197 * separated by a single whitespace. Returns 0 on fatal (string
2198 * overrun) error.
2199 */
2200
2201 for ( ; n; n = n->next) {
2202 assert(MDOC_TEXT == n->type);
2203
2204 if (strlcat(p, n->string, sz) >= sz) {
2205 mdoc_nmsg(m, n, MANDOCERR_MEM);
2206 return(0);
2207 }
2208
2209 if (NULL == n->next)
2210 continue;
2211
2212 if (strlcat(p, " ", sz) >= sz) {
2213 mdoc_nmsg(m, n, MANDOCERR_MEM);
2214 return(0);
2215 }
2216 }
2217
2218 return(1);
2219 }
2220
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