Annotation of mandoc/man.c, Revision 1.84
1.84 ! kristaps 1: /* $Id: man.c,v 1.83 2010/07/18 17:00:26 schwarze Exp $ */
1.1 kristaps 2: /*
1.82 schwarze 3: * Copyright (c) 2008, 2009, 2010 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 <ctype.h>
25: #include <stdarg.h>
26: #include <stdlib.h>
27: #include <stdio.h>
28: #include <string.h>
29:
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",
1.29 kristaps 40: "RI", "na", "i", "sp",
1.30 kristaps 41: "nf", "fi", "r", "RE",
1.52 kristaps 42: "RS", "DT", "UC", "PD",
1.73 joerg 43: "Sp", "Vb", "Ve", "AT",
1.84 ! kristaps 44: "in"
1.1 kristaps 45: };
46:
47: const char * const *man_macronames = __man_macronames;
48:
1.16 kristaps 49: static struct man_node *man_node_alloc(int, int,
1.53 kristaps 50: enum man_type, enum mant);
1.1 kristaps 51: static int man_node_append(struct man *,
52: struct man_node *);
1.54 kristaps 53: static void man_node_free(struct man_node *);
54: static void man_node_unlink(struct man *,
55: struct man_node *);
1.72 kristaps 56: static int man_ptext(struct man *, int, char *, int);
1.79 kristaps 57: static int man_pmacro(struct man *, int, char *, int);
1.2 kristaps 58: static void man_free1(struct man *);
1.45 kristaps 59: static void man_alloc1(struct man *);
1.72 kristaps 60: static int macrowarn(struct man *, int, const char *, int);
1.1 kristaps 61:
62:
63: const struct man_node *
1.2 kristaps 64: man_node(const struct man *m)
1.1 kristaps 65: {
66:
1.2 kristaps 67: return(MAN_HALT & m->flags ? NULL : 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:
1.2 kristaps 75: return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1 kristaps 76: }
77:
78:
1.45 kristaps 79: void
1.1 kristaps 80: man_reset(struct man *man)
81: {
82:
1.2 kristaps 83: man_free1(man);
1.45 kristaps 84: man_alloc1(man);
1.1 kristaps 85: }
86:
87:
88: void
89: man_free(struct man *man)
90: {
91:
1.2 kristaps 92: man_free1(man);
1.1 kristaps 93: free(man);
94: }
95:
96:
97: struct man *
1.80 kristaps 98: man_alloc(struct regset *regs, void *data,
99: int pflags, mandocmsg msg)
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();
1.4 kristaps 106: p->data = data;
1.7 kristaps 107: p->pflags = pflags;
1.74 kristaps 108: p->msg = msg;
1.79 kristaps 109: p->regs = regs;
1.45 kristaps 110:
111: man_alloc1(p);
1.1 kristaps 112: return(p);
113: }
114:
115:
116: int
117: man_endparse(struct man *m)
118: {
119:
1.3 kristaps 120: if (MAN_HALT & m->flags)
121: return(0);
122: else if (man_macroend(m))
123: return(1);
124: m->flags |= MAN_HALT;
125: return(0);
1.1 kristaps 126: }
127:
128:
129: int
1.79 kristaps 130: man_parseln(struct man *m, int ln, char *buf, int offs)
1.1 kristaps 131: {
132:
1.72 kristaps 133: if (MAN_HALT & m->flags)
134: return(0);
135:
136: return(('.' == buf[offs] || '\'' == buf[offs]) ?
1.79 kristaps 137: man_pmacro(m, ln, buf, offs) :
1.72 kristaps 138: man_ptext(m, ln, buf, offs));
1.1 kristaps 139: }
140:
141:
1.2 kristaps 142: static void
143: man_free1(struct man *man)
144: {
145:
146: if (man->first)
1.54 kristaps 147: man_node_delete(man, man->first);
1.2 kristaps 148: if (man->meta.title)
149: free(man->meta.title);
1.6 kristaps 150: if (man->meta.source)
151: free(man->meta.source);
1.75 kristaps 152: if (man->meta.rawdate)
153: free(man->meta.rawdate);
1.2 kristaps 154: if (man->meta.vol)
155: free(man->meta.vol);
1.68 kristaps 156: if (man->meta.msec)
157: free(man->meta.msec);
1.2 kristaps 158: }
159:
160:
1.45 kristaps 161: static void
1.2 kristaps 162: man_alloc1(struct man *m)
163: {
164:
1.44 kristaps 165: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 166: m->flags = 0;
1.45 kristaps 167: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 168: m->first = m->last;
169: m->last->type = MAN_ROOT;
1.54 kristaps 170: m->last->tok = MAN_MAX;
1.2 kristaps 171: m->next = MAN_NEXT_CHILD;
172: }
173:
174:
1.1 kristaps 175: static int
176: man_node_append(struct man *man, struct man_node *p)
177: {
178:
179: assert(man->last);
180: assert(man->first);
181: assert(MAN_ROOT != p->type);
182:
183: switch (man->next) {
184: case (MAN_NEXT_SIBLING):
185: man->last->next = p;
186: p->prev = man->last;
187: p->parent = man->last->parent;
188: break;
189: case (MAN_NEXT_CHILD):
190: man->last->child = p;
191: p->parent = man->last;
192: break;
193: default:
194: abort();
195: /* NOTREACHED */
196: }
1.22 kristaps 197:
1.54 kristaps 198: assert(p->parent);
1.22 kristaps 199: p->parent->nchild++;
1.1 kristaps 200:
1.29 kristaps 201: if ( ! man_valid_pre(man, p))
202: return(0);
203:
204: switch (p->type) {
205: case (MAN_HEAD):
206: assert(MAN_BLOCK == p->parent->type);
207: p->parent->head = p;
208: break;
209: case (MAN_BODY):
210: assert(MAN_BLOCK == p->parent->type);
211: p->parent->body = p;
212: break;
213: default:
214: break;
215: }
216:
1.2 kristaps 217: man->last = p;
218:
1.1 kristaps 219: switch (p->type) {
1.2 kristaps 220: case (MAN_TEXT):
221: if ( ! man_valid_post(man))
222: return(0);
223: if ( ! man_action_post(man))
224: return(0);
1.1 kristaps 225: break;
226: default:
227: break;
228: }
229:
230: return(1);
231: }
232:
233:
234: static struct man_node *
1.53 kristaps 235: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1 kristaps 236: {
237: struct man_node *p;
238:
1.45 kristaps 239: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 240: p->line = line;
241: p->pos = pos;
242: p->type = type;
1.16 kristaps 243: p->tok = tok;
1.1 kristaps 244: return(p);
245: }
246:
247:
248: int
1.53 kristaps 249: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 250: {
251: struct man_node *p;
252:
1.16 kristaps 253: p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30 kristaps 254: if ( ! man_node_append(m, p))
255: return(0);
256: m->next = MAN_NEXT_CHILD;
257: return(1);
1.1 kristaps 258: }
259:
260:
261: int
1.53 kristaps 262: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 263: {
264: struct man_node *p;
265:
266: p = man_node_alloc(line, pos, MAN_HEAD, tok);
267: if ( ! man_node_append(m, p))
268: return(0);
269: m->next = MAN_NEXT_CHILD;
270: return(1);
271: }
272:
273:
274: int
1.53 kristaps 275: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 276: {
277: struct man_node *p;
278:
279: p = man_node_alloc(line, pos, MAN_BODY, tok);
280: if ( ! man_node_append(m, p))
281: return(0);
282: m->next = MAN_NEXT_CHILD;
283: return(1);
284: }
285:
286:
287: int
1.53 kristaps 288: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 289: {
290: struct man_node *p;
291:
292: p = man_node_alloc(line, pos, MAN_BLOCK, tok);
293: if ( ! man_node_append(m, p))
294: return(0);
295: m->next = MAN_NEXT_CHILD;
296: return(1);
297: }
298:
299:
1.61 kristaps 300: int
301: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1 kristaps 302: {
1.31 kristaps 303: struct man_node *n;
1.61 kristaps 304: size_t sv, len;
305:
306: len = strlen(word);
1.1 kristaps 307:
1.53 kristaps 308: n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
1.45 kristaps 309: n->string = mandoc_malloc(len + 1);
1.61 kristaps 310: sv = strlcpy(n->string, word, len + 1);
1.31 kristaps 311:
312: /* Prohibit truncation. */
313: assert(sv < len + 1);
314:
315: if ( ! man_node_append(m, n))
1.30 kristaps 316: return(0);
1.61 kristaps 317:
1.30 kristaps 318: m->next = MAN_NEXT_SIBLING;
319: return(1);
1.1 kristaps 320: }
321:
322:
1.54 kristaps 323: /*
324: * Free all of the resources held by a node. This does NOT unlink a
325: * node from its context; for that, see man_node_unlink().
326: */
327: static void
1.1 kristaps 328: man_node_free(struct man_node *p)
329: {
330:
331: if (p->string)
332: free(p->string);
333: free(p);
334: }
335:
336:
337: void
1.54 kristaps 338: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 339: {
340:
1.54 kristaps 341: while (p->child)
342: man_node_delete(m, p->child);
343:
344: man_node_unlink(m, p);
1.1 kristaps 345: man_node_free(p);
346: }
347:
348:
349: static int
1.72 kristaps 350: man_ptext(struct man *m, int line, char *buf, int offs)
1.1 kristaps 351: {
1.61 kristaps 352: int i;
1.60 kristaps 353:
354: /* Ignore bogus comments. */
355:
1.72 kristaps 356: if ('\\' == buf[offs] &&
357: '.' == buf[offs + 1] &&
358: '"' == buf[offs + 2])
1.74 kristaps 359: return(man_pmsg(m, line, offs, MANDOCERR_BADCOMMENT));
1.31 kristaps 360:
1.35 kristaps 361: /* Literal free-form text whitespace is preserved. */
362:
363: if (MAN_LITERAL & m->flags) {
1.72 kristaps 364: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.35 kristaps 365: return(0);
366: goto descope;
367: }
368:
1.61 kristaps 369: /* Pump blank lines directly into the backend. */
1.31 kristaps 370:
1.72 kristaps 371: for (i = offs; ' ' == buf[i]; i++)
1.31 kristaps 372: /* Skip leading whitespace. */ ;
1.48 kristaps 373:
1.49 kristaps 374: if ('\0' == buf[i]) {
1.61 kristaps 375: /* Allocate a blank entry. */
1.72 kristaps 376: if ( ! man_word_alloc(m, line, offs, ""))
1.31 kristaps 377: return(0);
378: goto descope;
379: }
380:
1.63 kristaps 381: /*
382: * Warn if the last un-escaped character is whitespace. Then
383: * strip away the remaining spaces (tabs stay!).
384: */
1.29 kristaps 385:
1.61 kristaps 386: i = (int)strlen(buf);
387: assert(i);
1.49 kristaps 388:
1.63 kristaps 389: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64 kristaps 390: if (i > 1 && '\\' != buf[i - 2])
1.74 kristaps 391: if ( ! man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE))
1.49 kristaps 392: return(0);
1.63 kristaps 393:
394: for (--i; i && ' ' == buf[i]; i--)
395: /* Spin back to non-space. */ ;
396:
397: /* Jump ahead of escaped whitespace. */
398: i += '\\' == buf[i] ? 2 : 1;
399:
400: buf[i] = '\0';
401: }
1.49 kristaps 402:
1.72 kristaps 403: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.1 kristaps 404: return(0);
1.65 kristaps 405:
406: /*
407: * End-of-sentence check. If the last character is an unescaped
408: * EOS character, then flag the node as being the end of a
409: * sentence. The front-end will know how to interpret this.
410: */
1.67 kristaps 411:
1.65 kristaps 412: assert(i);
1.83 schwarze 413: if (mandoc_eos(buf, (size_t)i, 0))
1.65 kristaps 414: m->last->flags |= MAN_EOS;
1.31 kristaps 415:
416: descope:
1.11 kristaps 417: /*
1.29 kristaps 418: * Co-ordinate what happens with having a next-line scope open:
419: * first close out the element scope (if applicable), then close
420: * out the block scope (also if applicable).
1.11 kristaps 421: */
422:
1.29 kristaps 423: if (MAN_ELINE & m->flags) {
424: m->flags &= ~MAN_ELINE;
1.74 kristaps 425: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29 kristaps 426: return(0);
427: }
428:
429: if ( ! (MAN_BLINE & m->flags))
1.11 kristaps 430: return(1);
1.29 kristaps 431: m->flags &= ~MAN_BLINE;
1.11 kristaps 432:
1.74 kristaps 433: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.11 kristaps 434: return(0);
1.72 kristaps 435: return(man_body_alloc(m, line, offs, m->last->tok));
1.1 kristaps 436: }
437:
438:
1.43 kristaps 439: static int
1.72 kristaps 440: macrowarn(struct man *m, int ln, const char *buf, int offs)
1.43 kristaps 441: {
1.74 kristaps 442: int rc;
443:
444: rc = man_vmsg(m, MANDOCERR_MACRO, ln, offs,
445: "unknown macro: %s%s",
446: buf, strlen(buf) > 3 ? "..." : "");
447:
448: return(MAN_IGN_MACRO & m->pflags ? rc : 0);
1.43 kristaps 449: }
450:
451:
1.1 kristaps 452: int
1.79 kristaps 453: man_pmacro(struct man *m, int ln, char *buf, int offs)
1.1 kristaps 454: {
1.58 kristaps 455: int i, j, ppos;
1.53 kristaps 456: enum mant tok;
1.34 kristaps 457: char mac[5];
458: struct man_node *n;
1.1 kristaps 459:
460: /* Comments and empties are quickly ignored. */
461:
1.72 kristaps 462: offs++;
463:
464: if ('\0' == buf[offs])
1.46 kristaps 465: return(1);
1.1 kristaps 466:
1.72 kristaps 467: i = offs;
1.9 kristaps 468:
1.56 kristaps 469: /*
470: * Skip whitespace between the control character and initial
471: * text. "Whitespace" is both spaces and tabs.
472: */
1.62 kristaps 473:
1.57 kristaps 474: if (' ' == buf[i] || '\t' == buf[i]) {
1.9 kristaps 475: i++;
1.56 kristaps 476: while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1 kristaps 477: i++;
1.48 kristaps 478: if ('\0' == buf[i])
1.11 kristaps 479: goto out;
1.1 kristaps 480: }
481:
1.10 kristaps 482: ppos = i;
483:
1.1 kristaps 484: /* Copy the first word into a nil-terminated buffer. */
485:
1.10 kristaps 486: for (j = 0; j < 4; j++, i++) {
1.48 kristaps 487: if ('\0' == (mac[j] = buf[i]))
1.1 kristaps 488: break;
1.10 kristaps 489: else if (' ' == buf[i])
1.1 kristaps 490: break;
1.38 kristaps 491:
492: /* Check for invalid characters. */
493:
494: if (isgraph((u_char)buf[i]))
495: continue;
1.74 kristaps 496: if ( ! man_pmsg(m, ln, i, MANDOCERR_BADCHAR))
497: return(0);
498: i--;
1.1 kristaps 499: }
500:
1.46 kristaps 501: mac[j] = '\0';
1.1 kristaps 502:
1.9 kristaps 503: if (j == 4 || j < 1) {
1.74 kristaps 504: if ( ! macrowarn(m, ln, mac, ppos))
1.7 kristaps 505: goto err;
1.12 kristaps 506: return(1);
1.7 kristaps 507: }
1.1 kristaps 508:
1.53 kristaps 509: if (MAN_MAX == (tok = man_hash_find(mac))) {
1.72 kristaps 510: if ( ! macrowarn(m, ln, mac, ppos))
1.7 kristaps 511: goto err;
1.12 kristaps 512: return(1);
1.1 kristaps 513: }
514:
515: /* The macro is sane. Jump to the next word. */
516:
517: while (buf[i] && ' ' == buf[i])
518: i++;
519:
1.62 kristaps 520: /*
521: * Trailing whitespace. Note that tabs are allowed to be passed
522: * into the parser as "text", so we only warn about spaces here.
523: */
1.48 kristaps 524:
525: if ('\0' == buf[i] && ' ' == buf[i - 1])
1.74 kristaps 526: if ( ! man_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE))
1.48 kristaps 527: goto err;
528:
1.50 kristaps 529: /*
1.51 kristaps 530: * Remove prior ELINE macro, as it's being clobbering by a new
531: * macro. Note that NSCOPED macros do not close out ELINE
532: * macros---they don't print text---so we let those slip by.
1.50 kristaps 533: */
1.34 kristaps 534:
1.53 kristaps 535: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 536: m->flags & MAN_ELINE) {
537: assert(MAN_TEXT != m->last->type);
538:
539: /*
540: * This occurs in the following construction:
541: * .B
542: * .br
543: * .B
544: * .br
545: * I hate man macros.
546: * Flat-out disallow this madness.
547: */
1.74 kristaps 548: if (MAN_NSCOPED & man_macros[m->last->tok].flags) {
549: man_pmsg(m, ln, ppos, MANDOCERR_SYNTLINESCOPE);
550: return(0);
551: }
1.51 kristaps 552:
1.34 kristaps 553: n = m->last;
1.51 kristaps 554:
555: assert(n);
1.34 kristaps 556: assert(NULL == n->child);
1.37 kristaps 557: assert(0 == n->nchild);
1.51 kristaps 558:
1.74 kristaps 559: if ( ! man_nmsg(m, n, MANDOCERR_LINESCOPE))
1.34 kristaps 560: return(0);
561:
1.54 kristaps 562: man_node_delete(m, n);
1.34 kristaps 563: m->flags &= ~MAN_ELINE;
564: }
565:
1.59 kristaps 566: /*
567: * Save the fact that we're in the next-line for a block. In
568: * this way, embedded roff instructions can "remember" state
569: * when they exit.
570: */
571:
572: if (MAN_BLINE & m->flags)
573: m->flags |= MAN_BPLINE;
574:
575: /* Call to handler... */
1.1 kristaps 576:
1.53 kristaps 577: assert(man_macros[tok].fp);
1.79 kristaps 578: if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1 kristaps 579: goto err;
580:
1.11 kristaps 581: out:
1.50 kristaps 582: /*
583: * We weren't in a block-line scope when entering the
584: * above-parsed macro, so return.
585: */
586:
1.58 kristaps 587: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 588: m->flags &= ~MAN_ILINE;
1.29 kristaps 589: return(1);
1.50 kristaps 590: }
1.58 kristaps 591: m->flags &= ~MAN_BPLINE;
1.50 kristaps 592:
593: /*
594: * If we're in a block scope, then allow this macro to slip by
595: * without closing scope around it.
596: */
597:
598: if (MAN_ILINE & m->flags) {
599: m->flags &= ~MAN_ILINE;
600: return(1);
601: }
1.29 kristaps 602:
603: /*
604: * If we've opened a new next-line element scope, then return
605: * now, as the next line will close out the block scope.
606: */
607:
608: if (MAN_ELINE & m->flags)
609: return(1);
610:
611: /* Close out the block scope opened in the prior line. */
1.11 kristaps 612:
1.29 kristaps 613: assert(MAN_BLINE & m->flags);
614: m->flags &= ~MAN_BLINE;
1.11 kristaps 615:
1.74 kristaps 616: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29 kristaps 617: return(0);
1.72 kristaps 618: return(man_body_alloc(m, ln, offs, m->last->tok));
1.1 kristaps 619:
620: err: /* Error out. */
621:
1.2 kristaps 622: m->flags |= MAN_HALT;
1.1 kristaps 623: return(0);
624: }
1.3 kristaps 625:
1.4 kristaps 626:
627: int
1.74 kristaps 628: man_vmsg(struct man *man, enum mandocerr t,
629: int ln, int pos, const char *fmt, ...)
1.4 kristaps 630: {
631: char buf[256];
632: va_list ap;
633:
634: va_start(ap, fmt);
1.74 kristaps 635: vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.4 kristaps 636: va_end(ap);
1.74 kristaps 637: return((*man->msg)(t, man->data, ln, pos, buf));
1.51 kristaps 638: }
639:
640:
1.54 kristaps 641: /*
642: * Unlink a node from its context. If "m" is provided, the last parse
643: * point will also be adjusted accordingly.
644: */
645: static void
1.51 kristaps 646: man_node_unlink(struct man *m, struct man_node *n)
647: {
648:
1.54 kristaps 649: /* Adjust siblings. */
650:
651: if (n->prev)
1.51 kristaps 652: n->prev->next = n->next;
1.54 kristaps 653: if (n->next)
654: n->next->prev = n->prev;
655:
656: /* Adjust parent. */
657:
658: if (n->parent) {
659: n->parent->nchild--;
660: if (n->parent->child == n)
661: n->parent->child = n->prev ? n->prev : n->next;
662: }
663:
664: /* Adjust parse point, if applicable. */
665:
666: if (m && m->last == n) {
667: /*XXX: this can occur when bailing from validation. */
668: /*assert(NULL == n->next);*/
669: if (n->prev) {
1.51 kristaps 670: m->last = n->prev;
671: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 672: } else {
1.51 kristaps 673: m->last = n->parent;
674: m->next = MAN_NEXT_CHILD;
675: }
676: }
677:
1.54 kristaps 678: if (m && m->first == n)
679: m->first = NULL;
1.23 kristaps 680: }
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