Annotation of mandoc/man.c, Revision 1.118
1.118 ! schwarze 1: /* $Id: man.c,v 1.117 2012/06/12 20:21:04 kristaps Exp $ */
1.1 kristaps 2: /*
1.102 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.18 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.18 kristaps 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.
1.1 kristaps 16: */
1.47 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.41 kristaps 21: #include <sys/types.h>
22:
1.1 kristaps 23: #include <assert.h>
24: #include <stdarg.h>
25: #include <stdlib.h>
26: #include <stdio.h>
27: #include <string.h>
28:
1.105 kristaps 29: #include "man.h"
1.74 kristaps 30: #include "mandoc.h"
1.1 kristaps 31: #include "libman.h"
1.45 kristaps 32: #include "libmandoc.h"
1.1 kristaps 33:
34: const char *const __man_macronames[MAN_MAX] = {
1.21 kristaps 35: "br", "TH", "SH", "SS",
1.1 kristaps 36: "TP", "LP", "PP", "P",
37: "IP", "HP", "SM", "SB",
38: "BI", "IB", "BR", "RB",
1.11 kristaps 39: "R", "B", "I", "IR",
1.92 kristaps 40: "RI", "na", "sp", "nf",
41: "fi", "RE", "RS", "DT",
42: "UC", "PD", "AT", "in",
1.116 schwarze 43: "ft", "OP", "EX", "EE"
1.1 kristaps 44: };
45:
46: const char * const *man_macronames = __man_macronames;
47:
1.97 kristaps 48: static struct man_node *man_node_alloc(struct man *, int, int,
1.53 kristaps 49: enum man_type, enum mant);
1.1 kristaps 50: static int man_node_append(struct man *,
51: struct man_node *);
1.54 kristaps 52: static void man_node_free(struct man_node *);
53: static void man_node_unlink(struct man *,
54: struct man_node *);
1.72 kristaps 55: static int man_ptext(struct man *, int, char *, int);
1.79 kristaps 56: static int man_pmacro(struct man *, int, char *, int);
1.2 kristaps 57: static void man_free1(struct man *);
1.45 kristaps 58: static void man_alloc1(struct man *);
1.94 kristaps 59: static int man_descope(struct man *, int, int);
1.1 kristaps 60:
61:
62: const struct man_node *
1.2 kristaps 63: man_node(const struct man *m)
1.1 kristaps 64: {
65:
1.96 kristaps 66: assert( ! (MAN_HALT & m->flags));
67: return(m->first);
1.1 kristaps 68: }
69:
70:
71: const struct man_meta *
1.2 kristaps 72: man_meta(const struct man *m)
1.1 kristaps 73: {
74:
1.96 kristaps 75: assert( ! (MAN_HALT & m->flags));
76: return(&m->meta);
1.1 kristaps 77: }
78:
79:
1.45 kristaps 80: void
1.1 kristaps 81: man_reset(struct man *man)
82: {
83:
1.2 kristaps 84: man_free1(man);
1.45 kristaps 85: man_alloc1(man);
1.1 kristaps 86: }
87:
88:
89: void
90: man_free(struct man *man)
91: {
92:
1.2 kristaps 93: man_free1(man);
1.1 kristaps 94: free(man);
95: }
96:
97:
98: struct man *
1.108 kristaps 99: man_alloc(struct roff *roff, struct mparse *parse)
1.1 kristaps 100: {
101: struct man *p;
102:
1.45 kristaps 103: p = mandoc_calloc(1, sizeof(struct man));
1.2 kristaps 104:
1.40 kristaps 105: man_hash_init();
1.104 kristaps 106: p->parse = parse;
1.108 kristaps 107: p->roff = roff;
1.45 kristaps 108:
109: man_alloc1(p);
1.1 kristaps 110: return(p);
111: }
112:
113:
114: int
115: man_endparse(struct man *m)
116: {
117:
1.96 kristaps 118: assert( ! (MAN_HALT & m->flags));
119: if (man_macroend(m))
1.3 kristaps 120: return(1);
121: m->flags |= MAN_HALT;
122: return(0);
1.1 kristaps 123: }
124:
125:
126: int
1.79 kristaps 127: man_parseln(struct man *m, int ln, char *buf, int offs)
1.1 kristaps 128: {
129:
1.97 kristaps 130: m->flags |= MAN_NEWLINE;
131:
1.96 kristaps 132: assert( ! (MAN_HALT & m->flags));
1.107 kristaps 133:
1.117 kristaps 134: return (roff_getcontrol(m->roff, buf, &offs) ?
1.79 kristaps 135: man_pmacro(m, ln, buf, offs) :
1.72 kristaps 136: man_ptext(m, ln, buf, offs));
1.1 kristaps 137: }
138:
139:
1.2 kristaps 140: static void
141: man_free1(struct man *man)
142: {
143:
144: if (man->first)
1.54 kristaps 145: man_node_delete(man, man->first);
1.2 kristaps 146: if (man->meta.title)
147: free(man->meta.title);
1.6 kristaps 148: if (man->meta.source)
149: free(man->meta.source);
1.102 schwarze 150: if (man->meta.date)
151: free(man->meta.date);
1.2 kristaps 152: if (man->meta.vol)
153: free(man->meta.vol);
1.68 kristaps 154: if (man->meta.msec)
155: free(man->meta.msec);
1.2 kristaps 156: }
157:
158:
1.45 kristaps 159: static void
1.2 kristaps 160: man_alloc1(struct man *m)
161: {
162:
1.44 kristaps 163: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 164: m->flags = 0;
1.45 kristaps 165: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 166: m->first = m->last;
167: m->last->type = MAN_ROOT;
1.54 kristaps 168: m->last->tok = MAN_MAX;
1.2 kristaps 169: m->next = MAN_NEXT_CHILD;
170: }
171:
172:
1.1 kristaps 173: static int
174: man_node_append(struct man *man, struct man_node *p)
175: {
176:
177: assert(man->last);
178: assert(man->first);
179: assert(MAN_ROOT != p->type);
180:
181: switch (man->next) {
182: case (MAN_NEXT_SIBLING):
183: man->last->next = p;
184: p->prev = man->last;
185: p->parent = man->last->parent;
186: break;
187: case (MAN_NEXT_CHILD):
188: man->last->child = p;
189: p->parent = man->last;
190: break;
191: default:
192: abort();
193: /* NOTREACHED */
194: }
1.22 kristaps 195:
1.54 kristaps 196: assert(p->parent);
1.22 kristaps 197: p->parent->nchild++;
1.1 kristaps 198:
1.29 kristaps 199: if ( ! man_valid_pre(man, p))
200: return(0);
201:
202: switch (p->type) {
203: case (MAN_HEAD):
204: assert(MAN_BLOCK == p->parent->type);
205: p->parent->head = p;
206: break;
1.106 kristaps 207: case (MAN_TAIL):
208: assert(MAN_BLOCK == p->parent->type);
209: p->parent->tail = p;
210: break;
1.29 kristaps 211: case (MAN_BODY):
212: assert(MAN_BLOCK == p->parent->type);
213: p->parent->body = p;
214: break;
215: default:
216: break;
217: }
218:
1.2 kristaps 219: man->last = p;
220:
1.1 kristaps 221: switch (p->type) {
1.94 kristaps 222: case (MAN_TBL):
223: /* FALLTHROUGH */
1.2 kristaps 224: case (MAN_TEXT):
225: if ( ! man_valid_post(man))
226: return(0);
1.1 kristaps 227: break;
228: default:
229: break;
230: }
231:
232: return(1);
233: }
234:
235:
236: static struct man_node *
1.97 kristaps 237: man_node_alloc(struct man *m, int line, int pos,
238: enum man_type type, enum mant tok)
1.1 kristaps 239: {
240: struct man_node *p;
241:
1.45 kristaps 242: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 243: p->line = line;
244: p->pos = pos;
245: p->type = type;
1.16 kristaps 246: p->tok = tok;
1.97 kristaps 247:
248: if (MAN_NEWLINE & m->flags)
249: p->flags |= MAN_LINE;
250: m->flags &= ~MAN_NEWLINE;
1.1 kristaps 251: return(p);
252: }
253:
254:
255: int
1.53 kristaps 256: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 257: {
258: struct man_node *p;
259:
1.97 kristaps 260: p = man_node_alloc(m, line, pos, MAN_ELEM, tok);
1.106 kristaps 261: if ( ! man_node_append(m, p))
262: return(0);
263: m->next = MAN_NEXT_CHILD;
264: return(1);
265: }
266:
267:
268: int
269: man_tail_alloc(struct man *m, int line, int pos, enum mant tok)
270: {
271: struct man_node *p;
272:
273: p = man_node_alloc(m, line, pos, MAN_TAIL, tok);
1.30 kristaps 274: if ( ! man_node_append(m, p))
275: return(0);
276: m->next = MAN_NEXT_CHILD;
277: return(1);
1.1 kristaps 278: }
279:
280:
281: int
1.53 kristaps 282: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 283: {
284: struct man_node *p;
285:
1.97 kristaps 286: p = man_node_alloc(m, line, pos, MAN_HEAD, tok);
1.29 kristaps 287: if ( ! man_node_append(m, p))
288: return(0);
289: m->next = MAN_NEXT_CHILD;
290: return(1);
291: }
292:
293:
294: int
1.53 kristaps 295: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 296: {
297: struct man_node *p;
298:
1.97 kristaps 299: p = man_node_alloc(m, line, pos, MAN_BODY, tok);
1.29 kristaps 300: if ( ! man_node_append(m, p))
301: return(0);
302: m->next = MAN_NEXT_CHILD;
303: return(1);
304: }
305:
306:
307: int
1.53 kristaps 308: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 309: {
310: struct man_node *p;
311:
1.97 kristaps 312: p = man_node_alloc(m, line, pos, MAN_BLOCK, tok);
1.29 kristaps 313: if ( ! man_node_append(m, p))
314: return(0);
315: m->next = MAN_NEXT_CHILD;
316: return(1);
317: }
318:
1.61 kristaps 319: int
320: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1 kristaps 321: {
1.31 kristaps 322: struct man_node *n;
1.1 kristaps 323:
1.97 kristaps 324: n = man_node_alloc(m, line, pos, MAN_TEXT, MAN_MAX);
1.111 kristaps 325: n->string = roff_strdup(m->roff, word);
1.31 kristaps 326:
327: if ( ! man_node_append(m, n))
1.30 kristaps 328: return(0);
1.61 kristaps 329:
1.30 kristaps 330: m->next = MAN_NEXT_SIBLING;
331: return(1);
1.1 kristaps 332: }
333:
334:
1.54 kristaps 335: /*
336: * Free all of the resources held by a node. This does NOT unlink a
337: * node from its context; for that, see man_node_unlink().
338: */
339: static void
1.1 kristaps 340: man_node_free(struct man_node *p)
341: {
342:
343: if (p->string)
344: free(p->string);
345: free(p);
346: }
347:
348:
349: void
1.54 kristaps 350: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 351: {
352:
1.54 kristaps 353: while (p->child)
354: man_node_delete(m, p->child);
355:
356: man_node_unlink(m, p);
1.1 kristaps 357: man_node_free(p);
358: }
359:
1.101 kristaps 360: int
361: man_addeqn(struct man *m, const struct eqn *ep)
362: {
363: struct man_node *n;
364:
365: assert( ! (MAN_HALT & m->flags));
366:
1.109 kristaps 367: n = man_node_alloc(m, ep->ln, ep->pos, MAN_EQN, MAN_MAX);
1.101 kristaps 368: n->eqn = ep;
369:
370: if ( ! man_node_append(m, n))
371: return(0);
372:
373: m->next = MAN_NEXT_SIBLING;
1.109 kristaps 374: return(man_descope(m, ep->ln, ep->pos));
1.101 kristaps 375: }
1.1 kristaps 376:
1.94 kristaps 377: int
378: man_addspan(struct man *m, const struct tbl_span *sp)
379: {
1.100 kristaps 380: struct man_node *n;
1.94 kristaps 381:
1.96 kristaps 382: assert( ! (MAN_HALT & m->flags));
1.100 kristaps 383:
384: n = man_node_alloc(m, sp->line, 0, MAN_TBL, MAN_MAX);
385: n->span = sp;
386:
387: if ( ! man_node_append(m, n))
1.94 kristaps 388: return(0);
1.100 kristaps 389:
390: m->next = MAN_NEXT_SIBLING;
1.99 kristaps 391: return(man_descope(m, sp->line, 0));
1.94 kristaps 392: }
393:
394: static int
395: man_descope(struct man *m, int line, int offs)
396: {
397: /*
398: * Co-ordinate what happens with having a next-line scope open:
399: * first close out the element scope (if applicable), then close
400: * out the block scope (also if applicable).
401: */
402:
403: if (MAN_ELINE & m->flags) {
404: m->flags &= ~MAN_ELINE;
405: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
406: return(0);
407: }
408:
409: if ( ! (MAN_BLINE & m->flags))
410: return(1);
411: m->flags &= ~MAN_BLINE;
412:
413: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
414: return(0);
415: return(man_body_alloc(m, line, offs, m->last->tok));
416: }
417:
1.1 kristaps 418: static int
1.72 kristaps 419: man_ptext(struct man *m, int line, char *buf, int offs)
1.1 kristaps 420: {
1.61 kristaps 421: int i;
1.60 kristaps 422:
1.35 kristaps 423: /* Literal free-form text whitespace is preserved. */
424:
425: if (MAN_LITERAL & m->flags) {
1.72 kristaps 426: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.35 kristaps 427: return(0);
1.94 kristaps 428: return(man_descope(m, line, offs));
1.35 kristaps 429: }
430:
1.61 kristaps 431: /* Pump blank lines directly into the backend. */
1.31 kristaps 432:
1.72 kristaps 433: for (i = offs; ' ' == buf[i]; i++)
1.31 kristaps 434: /* Skip leading whitespace. */ ;
1.48 kristaps 435:
1.49 kristaps 436: if ('\0' == buf[i]) {
1.61 kristaps 437: /* Allocate a blank entry. */
1.118 ! schwarze 438: if ( ! man_elem_alloc(m, line, offs, MAN_sp))
1.31 kristaps 439: return(0);
1.118 ! schwarze 440: m->next = MAN_NEXT_SIBLING;
! 441: return(1);
1.31 kristaps 442: }
443:
1.63 kristaps 444: /*
445: * Warn if the last un-escaped character is whitespace. Then
446: * strip away the remaining spaces (tabs stay!).
447: */
1.29 kristaps 448:
1.61 kristaps 449: i = (int)strlen(buf);
450: assert(i);
1.49 kristaps 451:
1.63 kristaps 452: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64 kristaps 453: if (i > 1 && '\\' != buf[i - 2])
1.93 kristaps 454: man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE);
1.63 kristaps 455:
456: for (--i; i && ' ' == buf[i]; i--)
457: /* Spin back to non-space. */ ;
458:
459: /* Jump ahead of escaped whitespace. */
460: i += '\\' == buf[i] ? 2 : 1;
461:
462: buf[i] = '\0';
463: }
1.49 kristaps 464:
1.72 kristaps 465: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.1 kristaps 466: return(0);
1.65 kristaps 467:
468: /*
469: * End-of-sentence check. If the last character is an unescaped
470: * EOS character, then flag the node as being the end of a
471: * sentence. The front-end will know how to interpret this.
472: */
1.67 kristaps 473:
1.65 kristaps 474: assert(i);
1.83 schwarze 475: if (mandoc_eos(buf, (size_t)i, 0))
1.65 kristaps 476: m->last->flags |= MAN_EOS;
1.31 kristaps 477:
1.94 kristaps 478: return(man_descope(m, line, offs));
1.1 kristaps 479: }
480:
1.96 kristaps 481: static int
1.79 kristaps 482: man_pmacro(struct man *m, int ln, char *buf, int offs)
1.1 kristaps 483: {
1.107 kristaps 484: int i, ppos;
1.53 kristaps 485: enum mant tok;
1.34 kristaps 486: char mac[5];
487: struct man_node *n;
1.1 kristaps 488:
1.107 kristaps 489: if ('"' == buf[offs]) {
490: man_pmsg(m, ln, offs, MANDOCERR_BADCOMMENT);
491: return(1);
492: } else if ('\0' == buf[offs])
1.46 kristaps 493: return(1);
1.1 kristaps 494:
1.107 kristaps 495: ppos = offs;
1.9 kristaps 496:
1.56 kristaps 497: /*
1.107 kristaps 498: * Copy the first word into a nil-terminated buffer.
499: * Stop copying when a tab, space, or eoln is encountered.
1.56 kristaps 500: */
1.62 kristaps 501:
1.107 kristaps 502: i = 0;
503: while (i < 4 && '\0' != buf[offs] &&
504: ' ' != buf[offs] && '\t' != buf[offs])
505: mac[i++] = buf[offs++];
1.10 kristaps 506:
1.107 kristaps 507: mac[i] = '\0';
1.1 kristaps 508:
1.107 kristaps 509: tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
1.1 kristaps 510:
1.87 schwarze 511: if (MAN_MAX == tok) {
1.104 kristaps 512: mandoc_vmsg(MANDOCERR_MACRO, m->parse, ln,
513: ppos, "%s", buf + ppos - 1);
1.12 kristaps 514: return(1);
1.1 kristaps 515: }
516:
517: /* The macro is sane. Jump to the next word. */
518:
1.107 kristaps 519: while (buf[offs] && ' ' == buf[offs])
520: offs++;
1.1 kristaps 521:
1.62 kristaps 522: /*
523: * Trailing whitespace. Note that tabs are allowed to be passed
524: * into the parser as "text", so we only warn about spaces here.
525: */
1.48 kristaps 526:
1.107 kristaps 527: if ('\0' == buf[offs] && ' ' == buf[offs - 1])
528: man_pmsg(m, ln, offs - 1, MANDOCERR_EOLNSPACE);
1.48 kristaps 529:
1.50 kristaps 530: /*
1.90 kristaps 531: * Remove prior ELINE macro, as it's being clobbered by a new
1.51 kristaps 532: * macro. Note that NSCOPED macros do not close out ELINE
533: * macros---they don't print text---so we let those slip by.
1.50 kristaps 534: */
1.34 kristaps 535:
1.53 kristaps 536: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 537: m->flags & MAN_ELINE) {
1.90 kristaps 538: n = m->last;
539: assert(MAN_TEXT != n->type);
1.51 kristaps 540:
1.90 kristaps 541: /* Remove repeated NSCOPED macros causing ELINE. */
1.51 kristaps 542:
1.90 kristaps 543: if (MAN_NSCOPED & man_macros[n->tok].flags)
544: n = n->parent;
1.51 kristaps 545:
1.104 kristaps 546: mandoc_vmsg(MANDOCERR_LINESCOPE, m->parse, n->line,
1.113 schwarze 547: n->pos, "%s breaks %s", man_macronames[tok],
548: man_macronames[n->tok]);
1.34 kristaps 549:
1.54 kristaps 550: man_node_delete(m, n);
1.34 kristaps 551: m->flags &= ~MAN_ELINE;
1.113 schwarze 552: }
553:
554: /*
555: * Remove prior BLINE macro that is being clobbered.
556: */
557: if ((m->flags & MAN_BLINE) &&
558: (MAN_BSCOPE & man_macros[tok].flags)) {
559: n = m->last;
1.114 joerg 560:
561: /* Might be a text node like 8 in
562: * .TP 8
563: * .SH foo
564: */
565: if (MAN_TEXT == n->type)
566: n = n->parent;
1.113 schwarze 567:
568: /* Remove element that didn't end BLINE, if any. */
569: if ( ! (MAN_BSCOPE & man_macros[n->tok].flags))
570: n = n->parent;
571:
572: assert(MAN_HEAD == n->type);
573: n = n->parent;
574: assert(MAN_BLOCK == n->type);
575: assert(MAN_SCOPED & man_macros[n->tok].flags);
576:
577: mandoc_vmsg(MANDOCERR_LINESCOPE, m->parse, n->line,
578: n->pos, "%s breaks %s", man_macronames[tok],
579: man_macronames[n->tok]);
580:
581: man_node_delete(m, n);
582: m->flags &= ~MAN_BLINE;
1.34 kristaps 583: }
584:
1.59 kristaps 585: /*
586: * Save the fact that we're in the next-line for a block. In
587: * this way, embedded roff instructions can "remember" state
588: * when they exit.
589: */
590:
591: if (MAN_BLINE & m->flags)
592: m->flags |= MAN_BPLINE;
593:
594: /* Call to handler... */
1.1 kristaps 595:
1.53 kristaps 596: assert(man_macros[tok].fp);
1.107 kristaps 597: if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &offs, buf))
1.1 kristaps 598: goto err;
599:
1.50 kristaps 600: /*
601: * We weren't in a block-line scope when entering the
602: * above-parsed macro, so return.
603: */
604:
1.58 kristaps 605: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 606: m->flags &= ~MAN_ILINE;
1.29 kristaps 607: return(1);
1.50 kristaps 608: }
1.58 kristaps 609: m->flags &= ~MAN_BPLINE;
1.50 kristaps 610:
611: /*
612: * If we're in a block scope, then allow this macro to slip by
613: * without closing scope around it.
614: */
615:
616: if (MAN_ILINE & m->flags) {
617: m->flags &= ~MAN_ILINE;
618: return(1);
619: }
1.29 kristaps 620:
621: /*
622: * If we've opened a new next-line element scope, then return
623: * now, as the next line will close out the block scope.
624: */
625:
626: if (MAN_ELINE & m->flags)
627: return(1);
628:
629: /* Close out the block scope opened in the prior line. */
1.11 kristaps 630:
1.29 kristaps 631: assert(MAN_BLINE & m->flags);
632: m->flags &= ~MAN_BLINE;
1.11 kristaps 633:
1.74 kristaps 634: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29 kristaps 635: return(0);
1.107 kristaps 636: return(man_body_alloc(m, ln, ppos, m->last->tok));
1.1 kristaps 637:
638: err: /* Error out. */
639:
1.2 kristaps 640: m->flags |= MAN_HALT;
1.1 kristaps 641: return(0);
642: }
1.51 kristaps 643:
1.54 kristaps 644: /*
645: * Unlink a node from its context. If "m" is provided, the last parse
646: * point will also be adjusted accordingly.
647: */
648: static void
1.51 kristaps 649: man_node_unlink(struct man *m, struct man_node *n)
650: {
651:
1.54 kristaps 652: /* Adjust siblings. */
653:
654: if (n->prev)
1.51 kristaps 655: n->prev->next = n->next;
1.54 kristaps 656: if (n->next)
657: n->next->prev = n->prev;
658:
659: /* Adjust parent. */
660:
661: if (n->parent) {
662: n->parent->nchild--;
663: if (n->parent->child == n)
664: n->parent->child = n->prev ? n->prev : n->next;
665: }
666:
667: /* Adjust parse point, if applicable. */
668:
669: if (m && m->last == n) {
670: /*XXX: this can occur when bailing from validation. */
671: /*assert(NULL == n->next);*/
672: if (n->prev) {
1.51 kristaps 673: m->last = n->prev;
674: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 675: } else {
1.51 kristaps 676: m->last = n->parent;
677: m->next = MAN_NEXT_CHILD;
678: }
679: }
680:
1.54 kristaps 681: if (m && m->first == n)
682: m->first = NULL;
1.112 kristaps 683: }
684:
685: const struct mparse *
686: man_mparse(const struct man *m)
687: {
688:
689: assert(m && m->parse);
690: return(m->parse);
1.23 kristaps 691: }
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