Annotation of mandoc/man.c, Revision 1.78
1.78 ! kristaps 1: /* $Id: man.c,v 1.77 2010/06/26 15:36:37 kristaps Exp $ */
1.1 kristaps 2: /*
1.76 kristaps 3: * Copyright (c) 2008, 2009 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"
1.77 kristaps 31: #include "regs.h"
1.1 kristaps 32: #include "libman.h"
1.45 kristaps 33: #include "libmandoc.h"
1.1 kristaps 34:
35: const char *const __man_macronames[MAN_MAX] = {
1.21 kristaps 36: "br", "TH", "SH", "SS",
1.1 kristaps 37: "TP", "LP", "PP", "P",
38: "IP", "HP", "SM", "SB",
39: "BI", "IB", "BR", "RB",
1.11 kristaps 40: "R", "B", "I", "IR",
1.29 kristaps 41: "RI", "na", "i", "sp",
1.30 kristaps 42: "nf", "fi", "r", "RE",
1.52 kristaps 43: "RS", "DT", "UC", "PD",
1.73 joerg 44: "Sp", "Vb", "Ve", "AT",
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);
1.78 ! kristaps 57: static int man_pmacro(struct man *,
! 58: const struct regset *regs,
! 59: int, char *, int);
1.2 kristaps 60: static void man_free1(struct man *);
1.45 kristaps 61: static void man_alloc1(struct man *);
1.72 kristaps 62: static int macrowarn(struct man *, int, const char *, int);
1.1 kristaps 63:
64:
65: const struct man_node *
1.2 kristaps 66: man_node(const struct man *m)
1.1 kristaps 67: {
68:
1.2 kristaps 69: return(MAN_HALT & m->flags ? NULL : m->first);
1.1 kristaps 70: }
71:
72:
73: const struct man_meta *
1.2 kristaps 74: man_meta(const struct man *m)
1.1 kristaps 75: {
76:
1.2 kristaps 77: return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1 kristaps 78: }
79:
80:
1.45 kristaps 81: void
1.1 kristaps 82: man_reset(struct man *man)
83: {
84:
1.2 kristaps 85: man_free1(man);
1.45 kristaps 86: man_alloc1(man);
1.1 kristaps 87: }
88:
89:
90: void
91: man_free(struct man *man)
92: {
93:
1.2 kristaps 94: man_free1(man);
1.1 kristaps 95: free(man);
96: }
97:
98:
99: struct man *
1.74 kristaps 100: man_alloc(void *data, int pflags, mandocmsg msg)
1.1 kristaps 101: {
102: struct man *p;
103:
1.45 kristaps 104: p = mandoc_calloc(1, sizeof(struct man));
1.2 kristaps 105:
1.40 kristaps 106: man_hash_init();
1.4 kristaps 107: p->data = data;
1.7 kristaps 108: p->pflags = pflags;
1.74 kristaps 109: p->msg = msg;
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
1.77 kristaps 130: man_parseln(struct man *m, const struct regset *regs,
131: int ln, char *buf, int offs)
1.1 kristaps 132: {
133:
1.72 kristaps 134: if (MAN_HALT & m->flags)
135: return(0);
136:
137: return(('.' == buf[offs] || '\'' == buf[offs]) ?
1.78 ! kristaps 138: man_pmacro(m, regs, ln, buf, offs) :
1.72 kristaps 139: man_ptext(m, ln, buf, offs));
1.1 kristaps 140: }
141:
142:
1.2 kristaps 143: static void
144: man_free1(struct man *man)
145: {
146:
147: if (man->first)
1.54 kristaps 148: man_node_delete(man, man->first);
1.2 kristaps 149: if (man->meta.title)
150: free(man->meta.title);
1.6 kristaps 151: if (man->meta.source)
152: free(man->meta.source);
1.75 kristaps 153: if (man->meta.rawdate)
154: free(man->meta.rawdate);
1.2 kristaps 155: if (man->meta.vol)
156: free(man->meta.vol);
1.68 kristaps 157: if (man->meta.msec)
158: free(man->meta.msec);
1.2 kristaps 159: }
160:
161:
1.45 kristaps 162: static void
1.2 kristaps 163: man_alloc1(struct man *m)
164: {
165:
1.44 kristaps 166: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 167: m->flags = 0;
1.45 kristaps 168: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 169: m->first = m->last;
170: m->last->type = MAN_ROOT;
1.54 kristaps 171: m->last->tok = MAN_MAX;
1.2 kristaps 172: m->next = MAN_NEXT_CHILD;
173: }
174:
175:
1.1 kristaps 176: static int
177: man_node_append(struct man *man, struct man_node *p)
178: {
179:
180: assert(man->last);
181: assert(man->first);
182: assert(MAN_ROOT != p->type);
183:
184: switch (man->next) {
185: case (MAN_NEXT_SIBLING):
186: man->last->next = p;
187: p->prev = man->last;
188: p->parent = man->last->parent;
189: break;
190: case (MAN_NEXT_CHILD):
191: man->last->child = p;
192: p->parent = man->last;
193: break;
194: default:
195: abort();
196: /* NOTREACHED */
197: }
1.22 kristaps 198:
1.54 kristaps 199: assert(p->parent);
1.22 kristaps 200: p->parent->nchild++;
1.1 kristaps 201:
1.29 kristaps 202: if ( ! man_valid_pre(man, p))
203: return(0);
204:
205: switch (p->type) {
206: case (MAN_HEAD):
207: assert(MAN_BLOCK == p->parent->type);
208: p->parent->head = p;
209: break;
210: case (MAN_BODY):
211: assert(MAN_BLOCK == p->parent->type);
212: p->parent->body = p;
213: break;
214: default:
215: break;
216: }
217:
1.2 kristaps 218: man->last = p;
219:
1.1 kristaps 220: switch (p->type) {
1.2 kristaps 221: case (MAN_TEXT):
222: if ( ! man_valid_post(man))
223: return(0);
224: if ( ! man_action_post(man))
225: return(0);
1.1 kristaps 226: break;
227: default:
228: break;
229: }
230:
231: return(1);
232: }
233:
234:
235: static struct man_node *
1.53 kristaps 236: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1 kristaps 237: {
238: struct man_node *p;
239:
1.45 kristaps 240: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 241: p->line = line;
242: p->pos = pos;
243: p->type = type;
1.16 kristaps 244: p->tok = tok;
1.1 kristaps 245: return(p);
246: }
247:
248:
249: int
1.53 kristaps 250: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 251: {
252: struct man_node *p;
253:
1.16 kristaps 254: p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30 kristaps 255: if ( ! man_node_append(m, p))
256: return(0);
257: m->next = MAN_NEXT_CHILD;
258: return(1);
1.1 kristaps 259: }
260:
261:
262: int
1.53 kristaps 263: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 264: {
265: struct man_node *p;
266:
267: p = man_node_alloc(line, pos, MAN_HEAD, tok);
268: if ( ! man_node_append(m, p))
269: return(0);
270: m->next = MAN_NEXT_CHILD;
271: return(1);
272: }
273:
274:
275: int
1.53 kristaps 276: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 277: {
278: struct man_node *p;
279:
280: p = man_node_alloc(line, pos, MAN_BODY, tok);
281: if ( ! man_node_append(m, p))
282: return(0);
283: m->next = MAN_NEXT_CHILD;
284: return(1);
285: }
286:
287:
288: int
1.53 kristaps 289: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 290: {
291: struct man_node *p;
292:
293: p = man_node_alloc(line, pos, MAN_BLOCK, tok);
294: if ( ! man_node_append(m, p))
295: return(0);
296: m->next = MAN_NEXT_CHILD;
297: return(1);
298: }
299:
300:
1.61 kristaps 301: int
302: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1 kristaps 303: {
1.31 kristaps 304: struct man_node *n;
1.61 kristaps 305: size_t sv, len;
306:
307: len = strlen(word);
1.1 kristaps 308:
1.53 kristaps 309: n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
1.45 kristaps 310: n->string = mandoc_malloc(len + 1);
1.61 kristaps 311: sv = strlcpy(n->string, word, len + 1);
1.31 kristaps 312:
313: /* Prohibit truncation. */
314: assert(sv < len + 1);
315:
316: if ( ! man_node_append(m, n))
1.30 kristaps 317: return(0);
1.61 kristaps 318:
1.30 kristaps 319: m->next = MAN_NEXT_SIBLING;
320: return(1);
1.1 kristaps 321: }
322:
323:
1.54 kristaps 324: /*
325: * Free all of the resources held by a node. This does NOT unlink a
326: * node from its context; for that, see man_node_unlink().
327: */
328: static void
1.1 kristaps 329: man_node_free(struct man_node *p)
330: {
331:
332: if (p->string)
333: free(p->string);
334: free(p);
335: }
336:
337:
338: void
1.54 kristaps 339: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 340: {
341:
1.54 kristaps 342: while (p->child)
343: man_node_delete(m, p->child);
344:
345: man_node_unlink(m, p);
1.1 kristaps 346: man_node_free(p);
347: }
348:
349:
350: static int
1.72 kristaps 351: man_ptext(struct man *m, int line, char *buf, int offs)
1.1 kristaps 352: {
1.61 kristaps 353: int i;
1.60 kristaps 354:
355: /* Ignore bogus comments. */
356:
1.72 kristaps 357: if ('\\' == buf[offs] &&
358: '.' == buf[offs + 1] &&
359: '"' == buf[offs + 2])
1.74 kristaps 360: return(man_pmsg(m, line, offs, MANDOCERR_BADCOMMENT));
1.31 kristaps 361:
1.35 kristaps 362: /* Literal free-form text whitespace is preserved. */
363:
364: if (MAN_LITERAL & m->flags) {
1.72 kristaps 365: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.35 kristaps 366: return(0);
367: goto descope;
368: }
369:
1.61 kristaps 370: /* Pump blank lines directly into the backend. */
1.31 kristaps 371:
1.72 kristaps 372: for (i = offs; ' ' == buf[i]; i++)
1.31 kristaps 373: /* Skip leading whitespace. */ ;
1.48 kristaps 374:
1.49 kristaps 375: if ('\0' == buf[i]) {
1.61 kristaps 376: /* Allocate a blank entry. */
1.72 kristaps 377: if ( ! man_word_alloc(m, line, offs, ""))
1.31 kristaps 378: return(0);
379: goto descope;
380: }
381:
1.63 kristaps 382: /*
383: * Warn if the last un-escaped character is whitespace. Then
384: * strip away the remaining spaces (tabs stay!).
385: */
1.29 kristaps 386:
1.61 kristaps 387: i = (int)strlen(buf);
388: assert(i);
1.49 kristaps 389:
1.63 kristaps 390: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64 kristaps 391: if (i > 1 && '\\' != buf[i - 2])
1.74 kristaps 392: if ( ! man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE))
1.49 kristaps 393: return(0);
1.63 kristaps 394:
395: for (--i; i && ' ' == buf[i]; i--)
396: /* Spin back to non-space. */ ;
397:
398: /* Jump ahead of escaped whitespace. */
399: i += '\\' == buf[i] ? 2 : 1;
400:
401: buf[i] = '\0';
402: }
1.49 kristaps 403:
1.72 kristaps 404: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.1 kristaps 405: return(0);
1.65 kristaps 406:
407: /*
408: * End-of-sentence check. If the last character is an unescaped
409: * EOS character, then flag the node as being the end of a
410: * sentence. The front-end will know how to interpret this.
411: */
1.67 kristaps 412:
1.65 kristaps 413: assert(i);
1.66 kristaps 414: if (mandoc_eos(buf, (size_t)i))
1.65 kristaps 415: m->last->flags |= MAN_EOS;
1.31 kristaps 416:
417: descope:
1.11 kristaps 418: /*
1.29 kristaps 419: * Co-ordinate what happens with having a next-line scope open:
420: * first close out the element scope (if applicable), then close
421: * out the block scope (also if applicable).
1.11 kristaps 422: */
423:
1.29 kristaps 424: if (MAN_ELINE & m->flags) {
425: m->flags &= ~MAN_ELINE;
1.74 kristaps 426: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29 kristaps 427: return(0);
428: }
429:
430: if ( ! (MAN_BLINE & m->flags))
1.11 kristaps 431: return(1);
1.29 kristaps 432: m->flags &= ~MAN_BLINE;
1.11 kristaps 433:
1.74 kristaps 434: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.11 kristaps 435: return(0);
1.72 kristaps 436: return(man_body_alloc(m, line, offs, m->last->tok));
1.1 kristaps 437: }
438:
439:
1.43 kristaps 440: static int
1.72 kristaps 441: macrowarn(struct man *m, int ln, const char *buf, int offs)
1.43 kristaps 442: {
1.74 kristaps 443: int rc;
444:
445: rc = man_vmsg(m, MANDOCERR_MACRO, ln, offs,
446: "unknown macro: %s%s",
447: buf, strlen(buf) > 3 ? "..." : "");
448:
449: return(MAN_IGN_MACRO & m->pflags ? rc : 0);
1.43 kristaps 450: }
451:
452:
1.1 kristaps 453: int
1.78 ! kristaps 454: man_pmacro(struct man *m, const struct regset *regs,
! 455: int ln, char *buf, int offs)
1.1 kristaps 456: {
1.58 kristaps 457: int i, j, ppos;
1.53 kristaps 458: enum mant tok;
1.34 kristaps 459: char mac[5];
460: struct man_node *n;
1.1 kristaps 461:
462: /* Comments and empties are quickly ignored. */
463:
1.72 kristaps 464: offs++;
465:
466: if ('\0' == buf[offs])
1.46 kristaps 467: return(1);
1.1 kristaps 468:
1.72 kristaps 469: i = offs;
1.9 kristaps 470:
1.56 kristaps 471: /*
472: * Skip whitespace between the control character and initial
473: * text. "Whitespace" is both spaces and tabs.
474: */
1.62 kristaps 475:
1.57 kristaps 476: if (' ' == buf[i] || '\t' == buf[i]) {
1.9 kristaps 477: i++;
1.56 kristaps 478: while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1 kristaps 479: i++;
1.48 kristaps 480: if ('\0' == buf[i])
1.11 kristaps 481: goto out;
1.1 kristaps 482: }
483:
1.10 kristaps 484: ppos = i;
485:
1.1 kristaps 486: /* Copy the first word into a nil-terminated buffer. */
487:
1.10 kristaps 488: for (j = 0; j < 4; j++, i++) {
1.48 kristaps 489: if ('\0' == (mac[j] = buf[i]))
1.1 kristaps 490: break;
1.10 kristaps 491: else if (' ' == buf[i])
1.1 kristaps 492: break;
1.38 kristaps 493:
494: /* Check for invalid characters. */
495:
496: if (isgraph((u_char)buf[i]))
497: continue;
1.74 kristaps 498: if ( ! man_pmsg(m, ln, i, MANDOCERR_BADCHAR))
499: return(0);
500: i--;
1.1 kristaps 501: }
502:
1.46 kristaps 503: mac[j] = '\0';
1.1 kristaps 504:
1.9 kristaps 505: if (j == 4 || j < 1) {
1.74 kristaps 506: if ( ! macrowarn(m, ln, mac, ppos))
1.7 kristaps 507: goto err;
1.12 kristaps 508: return(1);
1.7 kristaps 509: }
1.1 kristaps 510:
1.53 kristaps 511: if (MAN_MAX == (tok = man_hash_find(mac))) {
1.72 kristaps 512: if ( ! macrowarn(m, ln, mac, ppos))
1.7 kristaps 513: goto err;
1.12 kristaps 514: return(1);
1.1 kristaps 515: }
516:
517: /* The macro is sane. Jump to the next word. */
518:
519: while (buf[i] && ' ' == buf[i])
520: i++;
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:
527: if ('\0' == buf[i] && ' ' == buf[i - 1])
1.74 kristaps 528: if ( ! man_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE))
1.48 kristaps 529: goto err;
530:
1.50 kristaps 531: /*
1.51 kristaps 532: * Remove prior ELINE macro, as it's being clobbering by a new
533: * macro. Note that NSCOPED macros do not close out ELINE
534: * macros---they don't print text---so we let those slip by.
1.50 kristaps 535: */
1.34 kristaps 536:
1.53 kristaps 537: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 538: m->flags & MAN_ELINE) {
539: assert(MAN_TEXT != m->last->type);
540:
541: /*
542: * This occurs in the following construction:
543: * .B
544: * .br
545: * .B
546: * .br
547: * I hate man macros.
548: * Flat-out disallow this madness.
549: */
1.74 kristaps 550: if (MAN_NSCOPED & man_macros[m->last->tok].flags) {
551: man_pmsg(m, ln, ppos, MANDOCERR_SYNTLINESCOPE);
552: return(0);
553: }
1.51 kristaps 554:
1.34 kristaps 555: n = m->last;
1.51 kristaps 556:
557: assert(n);
1.34 kristaps 558: assert(NULL == n->child);
1.37 kristaps 559: assert(0 == n->nchild);
1.51 kristaps 560:
1.74 kristaps 561: if ( ! man_nmsg(m, n, MANDOCERR_LINESCOPE))
1.34 kristaps 562: return(0);
563:
1.54 kristaps 564: man_node_delete(m, n);
1.34 kristaps 565: m->flags &= ~MAN_ELINE;
566: }
567:
1.59 kristaps 568: /*
569: * Save the fact that we're in the next-line for a block. In
570: * this way, embedded roff instructions can "remember" state
571: * when they exit.
572: */
573:
574: if (MAN_BLINE & m->flags)
575: m->flags |= MAN_BPLINE;
576:
577: /* Call to handler... */
1.1 kristaps 578:
1.53 kristaps 579: assert(man_macros[tok].fp);
1.78 ! kristaps 580: if ( ! (*man_macros[tok].fp)(m, regs, tok, ln, ppos, &i, buf))
1.1 kristaps 581: goto err;
582:
1.11 kristaps 583: out:
1.50 kristaps 584: /*
585: * We weren't in a block-line scope when entering the
586: * above-parsed macro, so return.
587: */
588:
1.58 kristaps 589: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 590: m->flags &= ~MAN_ILINE;
1.29 kristaps 591: return(1);
1.50 kristaps 592: }
1.58 kristaps 593: m->flags &= ~MAN_BPLINE;
1.50 kristaps 594:
595: /*
596: * If we're in a block scope, then allow this macro to slip by
597: * without closing scope around it.
598: */
599:
600: if (MAN_ILINE & m->flags) {
601: m->flags &= ~MAN_ILINE;
602: return(1);
603: }
1.29 kristaps 604:
605: /*
606: * If we've opened a new next-line element scope, then return
607: * now, as the next line will close out the block scope.
608: */
609:
610: if (MAN_ELINE & m->flags)
611: return(1);
612:
613: /* Close out the block scope opened in the prior line. */
1.11 kristaps 614:
1.29 kristaps 615: assert(MAN_BLINE & m->flags);
616: m->flags &= ~MAN_BLINE;
1.11 kristaps 617:
1.74 kristaps 618: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29 kristaps 619: return(0);
1.72 kristaps 620: return(man_body_alloc(m, ln, offs, m->last->tok));
1.1 kristaps 621:
622: err: /* Error out. */
623:
1.2 kristaps 624: m->flags |= MAN_HALT;
1.1 kristaps 625: return(0);
626: }
1.3 kristaps 627:
1.4 kristaps 628:
629: int
1.74 kristaps 630: man_vmsg(struct man *man, enum mandocerr t,
631: int ln, int pos, const char *fmt, ...)
1.4 kristaps 632: {
633: char buf[256];
634: va_list ap;
635:
636: va_start(ap, fmt);
1.74 kristaps 637: vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.4 kristaps 638: va_end(ap);
1.74 kristaps 639: return((*man->msg)(t, man->data, ln, pos, buf));
1.51 kristaps 640: }
641:
642:
1.54 kristaps 643: /*
644: * Unlink a node from its context. If "m" is provided, the last parse
645: * point will also be adjusted accordingly.
646: */
647: static void
1.51 kristaps 648: man_node_unlink(struct man *m, struct man_node *n)
649: {
650:
1.54 kristaps 651: /* Adjust siblings. */
652:
653: if (n->prev)
1.51 kristaps 654: n->prev->next = n->next;
1.54 kristaps 655: if (n->next)
656: n->next->prev = n->prev;
657:
658: /* Adjust parent. */
659:
660: if (n->parent) {
661: n->parent->nchild--;
662: if (n->parent->child == n)
663: n->parent->child = n->prev ? n->prev : n->next;
664: }
665:
666: /* Adjust parse point, if applicable. */
667:
668: if (m && m->last == n) {
669: /*XXX: this can occur when bailing from validation. */
670: /*assert(NULL == n->next);*/
671: if (n->prev) {
1.51 kristaps 672: m->last = n->prev;
673: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 674: } else {
1.51 kristaps 675: m->last = n->parent;
676: m->next = MAN_NEXT_CHILD;
677: }
678: }
679:
1.54 kristaps 680: if (m && m->first == n)
681: m->first = NULL;
1.23 kristaps 682: }
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