Annotation of mandoc/man.c, Revision 1.74
1.74 ! kristaps 1: /* $Id: man.c,v 1.73 2010/05/17 10:50:32 joerg Exp $ */
1.1 kristaps 2: /*
1.19 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
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",
1.1 kristaps 44: };
45:
46: const char * const *man_macronames = __man_macronames;
47:
1.16 kristaps 48: static struct man_node *man_node_alloc(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);
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 *);
1.72 kristaps 59: static int macrowarn(struct man *, int, const char *, 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:
1.2 kristaps 66: return(MAN_HALT & m->flags ? NULL : m->first);
1.1 kristaps 67: }
68:
69:
70: const struct man_meta *
1.2 kristaps 71: man_meta(const struct man *m)
1.1 kristaps 72: {
73:
1.2 kristaps 74: return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1 kristaps 75: }
76:
77:
1.45 kristaps 78: void
1.1 kristaps 79: man_reset(struct man *man)
80: {
81:
1.2 kristaps 82: man_free1(man);
1.45 kristaps 83: man_alloc1(man);
1.1 kristaps 84: }
85:
86:
87: void
88: man_free(struct man *man)
89: {
90:
1.2 kristaps 91: man_free1(man);
1.1 kristaps 92: free(man);
93: }
94:
95:
96: struct man *
1.74 ! kristaps 97: man_alloc(void *data, int pflags, mandocmsg msg)
1.1 kristaps 98: {
99: struct man *p;
100:
1.45 kristaps 101: p = mandoc_calloc(1, sizeof(struct man));
1.2 kristaps 102:
1.40 kristaps 103: man_hash_init();
1.4 kristaps 104: p->data = data;
1.7 kristaps 105: p->pflags = pflags;
1.74 ! kristaps 106: p->msg = msg;
1.45 kristaps 107:
108: man_alloc1(p);
1.1 kristaps 109: return(p);
110: }
111:
112:
113: int
114: man_endparse(struct man *m)
115: {
116:
1.3 kristaps 117: if (MAN_HALT & m->flags)
118: return(0);
119: else if (man_macroend(m))
120: return(1);
121: m->flags |= MAN_HALT;
122: return(0);
1.1 kristaps 123: }
124:
125:
126: int
1.72 kristaps 127: man_parseln(struct man *m, int ln, char *buf, int offs)
1.1 kristaps 128: {
129:
1.72 kristaps 130: if (MAN_HALT & m->flags)
131: return(0);
132:
133: return(('.' == buf[offs] || '\'' == buf[offs]) ?
134: man_pmacro(m, ln, buf, offs) :
135: man_ptext(m, ln, buf, offs));
1.1 kristaps 136: }
137:
138:
1.2 kristaps 139: static void
140: man_free1(struct man *man)
141: {
142:
143: if (man->first)
1.54 kristaps 144: man_node_delete(man, man->first);
1.2 kristaps 145: if (man->meta.title)
146: free(man->meta.title);
1.6 kristaps 147: if (man->meta.source)
148: free(man->meta.source);
1.2 kristaps 149: if (man->meta.vol)
150: free(man->meta.vol);
1.68 kristaps 151: if (man->meta.msec)
152: free(man->meta.msec);
1.2 kristaps 153: }
154:
155:
1.45 kristaps 156: static void
1.2 kristaps 157: man_alloc1(struct man *m)
158: {
159:
1.44 kristaps 160: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 161: m->flags = 0;
1.45 kristaps 162: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 163: m->first = m->last;
164: m->last->type = MAN_ROOT;
1.54 kristaps 165: m->last->tok = MAN_MAX;
1.2 kristaps 166: m->next = MAN_NEXT_CHILD;
167: }
168:
169:
1.1 kristaps 170: static int
171: man_node_append(struct man *man, struct man_node *p)
172: {
173:
174: assert(man->last);
175: assert(man->first);
176: assert(MAN_ROOT != p->type);
177:
178: switch (man->next) {
179: case (MAN_NEXT_SIBLING):
180: man->last->next = p;
181: p->prev = man->last;
182: p->parent = man->last->parent;
183: break;
184: case (MAN_NEXT_CHILD):
185: man->last->child = p;
186: p->parent = man->last;
187: break;
188: default:
189: abort();
190: /* NOTREACHED */
191: }
1.22 kristaps 192:
1.54 kristaps 193: assert(p->parent);
1.22 kristaps 194: p->parent->nchild++;
1.1 kristaps 195:
1.29 kristaps 196: if ( ! man_valid_pre(man, p))
197: return(0);
198:
199: switch (p->type) {
200: case (MAN_HEAD):
201: assert(MAN_BLOCK == p->parent->type);
202: p->parent->head = p;
203: break;
204: case (MAN_BODY):
205: assert(MAN_BLOCK == p->parent->type);
206: p->parent->body = p;
207: break;
208: default:
209: break;
210: }
211:
1.2 kristaps 212: man->last = p;
213:
1.1 kristaps 214: switch (p->type) {
1.2 kristaps 215: case (MAN_TEXT):
216: if ( ! man_valid_post(man))
217: return(0);
218: if ( ! man_action_post(man))
219: return(0);
1.1 kristaps 220: break;
221: default:
222: break;
223: }
224:
225: return(1);
226: }
227:
228:
229: static struct man_node *
1.53 kristaps 230: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1 kristaps 231: {
232: struct man_node *p;
233:
1.45 kristaps 234: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 235: p->line = line;
236: p->pos = pos;
237: p->type = type;
1.16 kristaps 238: p->tok = tok;
1.1 kristaps 239: return(p);
240: }
241:
242:
243: int
1.53 kristaps 244: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 245: {
246: struct man_node *p;
247:
1.16 kristaps 248: p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30 kristaps 249: if ( ! man_node_append(m, p))
250: return(0);
251: m->next = MAN_NEXT_CHILD;
252: return(1);
1.1 kristaps 253: }
254:
255:
256: int
1.53 kristaps 257: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 258: {
259: struct man_node *p;
260:
261: p = man_node_alloc(line, pos, MAN_HEAD, tok);
262: if ( ! man_node_append(m, p))
263: return(0);
264: m->next = MAN_NEXT_CHILD;
265: return(1);
266: }
267:
268:
269: int
1.53 kristaps 270: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 271: {
272: struct man_node *p;
273:
274: p = man_node_alloc(line, pos, MAN_BODY, tok);
275: if ( ! man_node_append(m, p))
276: return(0);
277: m->next = MAN_NEXT_CHILD;
278: return(1);
279: }
280:
281:
282: int
1.53 kristaps 283: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 284: {
285: struct man_node *p;
286:
287: p = man_node_alloc(line, pos, MAN_BLOCK, tok);
288: if ( ! man_node_append(m, p))
289: return(0);
290: m->next = MAN_NEXT_CHILD;
291: return(1);
292: }
293:
294:
1.61 kristaps 295: int
296: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1 kristaps 297: {
1.31 kristaps 298: struct man_node *n;
1.61 kristaps 299: size_t sv, len;
300:
301: len = strlen(word);
1.1 kristaps 302:
1.53 kristaps 303: n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
1.45 kristaps 304: n->string = mandoc_malloc(len + 1);
1.61 kristaps 305: sv = strlcpy(n->string, word, len + 1);
1.31 kristaps 306:
307: /* Prohibit truncation. */
308: assert(sv < len + 1);
309:
310: if ( ! man_node_append(m, n))
1.30 kristaps 311: return(0);
1.61 kristaps 312:
1.30 kristaps 313: m->next = MAN_NEXT_SIBLING;
314: return(1);
1.1 kristaps 315: }
316:
317:
1.54 kristaps 318: /*
319: * Free all of the resources held by a node. This does NOT unlink a
320: * node from its context; for that, see man_node_unlink().
321: */
322: static void
1.1 kristaps 323: man_node_free(struct man_node *p)
324: {
325:
326: if (p->string)
327: free(p->string);
328: free(p);
329: }
330:
331:
332: void
1.54 kristaps 333: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 334: {
335:
1.54 kristaps 336: while (p->child)
337: man_node_delete(m, p->child);
338:
339: man_node_unlink(m, p);
1.1 kristaps 340: man_node_free(p);
341: }
342:
343:
344: static int
1.72 kristaps 345: man_ptext(struct man *m, int line, char *buf, int offs)
1.1 kristaps 346: {
1.61 kristaps 347: int i;
1.60 kristaps 348:
349: /* Ignore bogus comments. */
350:
1.72 kristaps 351: if ('\\' == buf[offs] &&
352: '.' == buf[offs + 1] &&
353: '"' == buf[offs + 2])
1.74 ! kristaps 354: return(man_pmsg(m, line, offs, MANDOCERR_BADCOMMENT));
1.31 kristaps 355:
1.35 kristaps 356: /* Literal free-form text whitespace is preserved. */
357:
358: if (MAN_LITERAL & m->flags) {
1.72 kristaps 359: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.35 kristaps 360: return(0);
361: goto descope;
362: }
363:
1.61 kristaps 364: /* Pump blank lines directly into the backend. */
1.31 kristaps 365:
1.72 kristaps 366: for (i = offs; ' ' == buf[i]; i++)
1.31 kristaps 367: /* Skip leading whitespace. */ ;
1.48 kristaps 368:
1.49 kristaps 369: if ('\0' == buf[i]) {
1.61 kristaps 370: /* Allocate a blank entry. */
1.72 kristaps 371: if ( ! man_word_alloc(m, line, offs, ""))
1.31 kristaps 372: return(0);
373: goto descope;
374: }
375:
1.63 kristaps 376: /*
377: * Warn if the last un-escaped character is whitespace. Then
378: * strip away the remaining spaces (tabs stay!).
379: */
1.29 kristaps 380:
1.61 kristaps 381: i = (int)strlen(buf);
382: assert(i);
1.49 kristaps 383:
1.63 kristaps 384: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64 kristaps 385: if (i > 1 && '\\' != buf[i - 2])
1.74 ! kristaps 386: if ( ! man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE))
1.49 kristaps 387: return(0);
1.63 kristaps 388:
389: for (--i; i && ' ' == buf[i]; i--)
390: /* Spin back to non-space. */ ;
391:
392: /* Jump ahead of escaped whitespace. */
393: i += '\\' == buf[i] ? 2 : 1;
394:
395: buf[i] = '\0';
396: }
1.49 kristaps 397:
1.72 kristaps 398: if ( ! man_word_alloc(m, line, offs, buf + offs))
1.1 kristaps 399: return(0);
1.65 kristaps 400:
401: /*
402: * End-of-sentence check. If the last character is an unescaped
403: * EOS character, then flag the node as being the end of a
404: * sentence. The front-end will know how to interpret this.
405: */
1.67 kristaps 406:
1.65 kristaps 407: assert(i);
1.66 kristaps 408: if (mandoc_eos(buf, (size_t)i))
1.65 kristaps 409: m->last->flags |= MAN_EOS;
1.31 kristaps 410:
411: descope:
1.11 kristaps 412: /*
1.29 kristaps 413: * Co-ordinate what happens with having a next-line scope open:
414: * first close out the element scope (if applicable), then close
415: * out the block scope (also if applicable).
1.11 kristaps 416: */
417:
1.29 kristaps 418: if (MAN_ELINE & m->flags) {
419: m->flags &= ~MAN_ELINE;
1.74 ! kristaps 420: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29 kristaps 421: return(0);
422: }
423:
424: if ( ! (MAN_BLINE & m->flags))
1.11 kristaps 425: return(1);
1.29 kristaps 426: m->flags &= ~MAN_BLINE;
1.11 kristaps 427:
1.74 ! kristaps 428: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.11 kristaps 429: return(0);
1.72 kristaps 430: return(man_body_alloc(m, line, offs, m->last->tok));
1.1 kristaps 431: }
432:
433:
1.43 kristaps 434: static int
1.72 kristaps 435: macrowarn(struct man *m, int ln, const char *buf, int offs)
1.43 kristaps 436: {
1.74 ! kristaps 437: int rc;
! 438:
! 439: rc = man_vmsg(m, MANDOCERR_MACRO, ln, offs,
! 440: "unknown macro: %s%s",
! 441: buf, strlen(buf) > 3 ? "..." : "");
! 442:
! 443: return(MAN_IGN_MACRO & m->pflags ? rc : 0);
1.43 kristaps 444: }
445:
446:
1.1 kristaps 447: int
1.72 kristaps 448: man_pmacro(struct man *m, int ln, char *buf, int offs)
1.1 kristaps 449: {
1.58 kristaps 450: int i, j, ppos;
1.53 kristaps 451: enum mant tok;
1.34 kristaps 452: char mac[5];
453: struct man_node *n;
1.1 kristaps 454:
455: /* Comments and empties are quickly ignored. */
456:
1.72 kristaps 457: offs++;
458:
459: if ('\0' == buf[offs])
1.46 kristaps 460: return(1);
1.1 kristaps 461:
1.72 kristaps 462: i = offs;
1.9 kristaps 463:
1.56 kristaps 464: /*
465: * Skip whitespace between the control character and initial
466: * text. "Whitespace" is both spaces and tabs.
467: */
1.62 kristaps 468:
1.57 kristaps 469: if (' ' == buf[i] || '\t' == buf[i]) {
1.9 kristaps 470: i++;
1.56 kristaps 471: while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1 kristaps 472: i++;
1.48 kristaps 473: if ('\0' == buf[i])
1.11 kristaps 474: goto out;
1.1 kristaps 475: }
476:
1.10 kristaps 477: ppos = i;
478:
1.1 kristaps 479: /* Copy the first word into a nil-terminated buffer. */
480:
1.10 kristaps 481: for (j = 0; j < 4; j++, i++) {
1.48 kristaps 482: if ('\0' == (mac[j] = buf[i]))
1.1 kristaps 483: break;
1.10 kristaps 484: else if (' ' == buf[i])
1.1 kristaps 485: break;
1.38 kristaps 486:
487: /* Check for invalid characters. */
488:
489: if (isgraph((u_char)buf[i]))
490: continue;
1.74 ! kristaps 491: if ( ! man_pmsg(m, ln, i, MANDOCERR_BADCHAR))
! 492: return(0);
! 493: i--;
1.1 kristaps 494: }
495:
1.46 kristaps 496: mac[j] = '\0';
1.1 kristaps 497:
1.9 kristaps 498: if (j == 4 || j < 1) {
1.74 ! kristaps 499: if ( ! macrowarn(m, ln, mac, ppos))
1.7 kristaps 500: goto err;
1.12 kristaps 501: return(1);
1.7 kristaps 502: }
1.1 kristaps 503:
1.53 kristaps 504: if (MAN_MAX == (tok = man_hash_find(mac))) {
1.72 kristaps 505: if ( ! macrowarn(m, ln, mac, ppos))
1.7 kristaps 506: goto err;
1.12 kristaps 507: return(1);
1.1 kristaps 508: }
509:
510: /* The macro is sane. Jump to the next word. */
511:
512: while (buf[i] && ' ' == buf[i])
513: i++;
514:
1.62 kristaps 515: /*
516: * Trailing whitespace. Note that tabs are allowed to be passed
517: * into the parser as "text", so we only warn about spaces here.
518: */
1.48 kristaps 519:
520: if ('\0' == buf[i] && ' ' == buf[i - 1])
1.74 ! kristaps 521: if ( ! man_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE))
1.48 kristaps 522: goto err;
523:
1.50 kristaps 524: /*
1.51 kristaps 525: * Remove prior ELINE macro, as it's being clobbering by a new
526: * macro. Note that NSCOPED macros do not close out ELINE
527: * macros---they don't print text---so we let those slip by.
1.50 kristaps 528: */
1.34 kristaps 529:
1.53 kristaps 530: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 531: m->flags & MAN_ELINE) {
532: assert(MAN_TEXT != m->last->type);
533:
534: /*
535: * This occurs in the following construction:
536: * .B
537: * .br
538: * .B
539: * .br
540: * I hate man macros.
541: * Flat-out disallow this madness.
542: */
1.74 ! kristaps 543: if (MAN_NSCOPED & man_macros[m->last->tok].flags) {
! 544: man_pmsg(m, ln, ppos, MANDOCERR_SYNTLINESCOPE);
! 545: return(0);
! 546: }
1.51 kristaps 547:
1.34 kristaps 548: n = m->last;
1.51 kristaps 549:
550: assert(n);
1.34 kristaps 551: assert(NULL == n->child);
1.37 kristaps 552: assert(0 == n->nchild);
1.51 kristaps 553:
1.74 ! kristaps 554: if ( ! man_nmsg(m, n, MANDOCERR_LINESCOPE))
1.34 kristaps 555: return(0);
556:
1.54 kristaps 557: man_node_delete(m, n);
1.34 kristaps 558: m->flags &= ~MAN_ELINE;
559: }
560:
1.59 kristaps 561: /*
562: * Save the fact that we're in the next-line for a block. In
563: * this way, embedded roff instructions can "remember" state
564: * when they exit.
565: */
566:
567: if (MAN_BLINE & m->flags)
568: m->flags |= MAN_BPLINE;
569:
570: /* Call to handler... */
1.1 kristaps 571:
1.53 kristaps 572: assert(man_macros[tok].fp);
573: if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1 kristaps 574: goto err;
575:
1.11 kristaps 576: out:
1.50 kristaps 577: /*
578: * We weren't in a block-line scope when entering the
579: * above-parsed macro, so return.
580: */
581:
1.58 kristaps 582: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 583: m->flags &= ~MAN_ILINE;
1.29 kristaps 584: return(1);
1.50 kristaps 585: }
1.58 kristaps 586: m->flags &= ~MAN_BPLINE;
1.50 kristaps 587:
588: /*
589: * If we're in a block scope, then allow this macro to slip by
590: * without closing scope around it.
591: */
592:
593: if (MAN_ILINE & m->flags) {
594: m->flags &= ~MAN_ILINE;
595: return(1);
596: }
1.29 kristaps 597:
598: /*
599: * If we've opened a new next-line element scope, then return
600: * now, as the next line will close out the block scope.
601: */
602:
603: if (MAN_ELINE & m->flags)
604: return(1);
605:
606: /* Close out the block scope opened in the prior line. */
1.11 kristaps 607:
1.29 kristaps 608: assert(MAN_BLINE & m->flags);
609: m->flags &= ~MAN_BLINE;
1.11 kristaps 610:
1.74 ! kristaps 611: if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29 kristaps 612: return(0);
1.72 kristaps 613: return(man_body_alloc(m, ln, offs, m->last->tok));
1.1 kristaps 614:
615: err: /* Error out. */
616:
1.2 kristaps 617: m->flags |= MAN_HALT;
1.1 kristaps 618: return(0);
619: }
1.3 kristaps 620:
1.4 kristaps 621:
622: int
1.74 ! kristaps 623: man_vmsg(struct man *man, enum mandocerr t,
! 624: int ln, int pos, const char *fmt, ...)
1.4 kristaps 625: {
626: char buf[256];
627: va_list ap;
628:
629: va_start(ap, fmt);
1.74 ! kristaps 630: vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.4 kristaps 631: va_end(ap);
1.74 ! kristaps 632: return((*man->msg)(t, man->data, ln, pos, buf));
1.51 kristaps 633: }
634:
635:
1.54 kristaps 636: /*
637: * Unlink a node from its context. If "m" is provided, the last parse
638: * point will also be adjusted accordingly.
639: */
640: static void
1.51 kristaps 641: man_node_unlink(struct man *m, struct man_node *n)
642: {
643:
1.54 kristaps 644: /* Adjust siblings. */
645:
646: if (n->prev)
1.51 kristaps 647: n->prev->next = n->next;
1.54 kristaps 648: if (n->next)
649: n->next->prev = n->prev;
650:
651: /* Adjust parent. */
652:
653: if (n->parent) {
654: n->parent->nchild--;
655: if (n->parent->child == n)
656: n->parent->child = n->prev ? n->prev : n->next;
657: }
658:
659: /* Adjust parse point, if applicable. */
660:
661: if (m && m->last == n) {
662: /*XXX: this can occur when bailing from validation. */
663: /*assert(NULL == n->next);*/
664: if (n->prev) {
1.51 kristaps 665: m->last = n->prev;
666: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 667: } else {
1.51 kristaps 668: m->last = n->parent;
669: m->next = MAN_NEXT_CHILD;
670: }
671: }
672:
1.54 kristaps 673: if (m && m->first == n)
674: m->first = NULL;
1.23 kristaps 675: }
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