Annotation of mandoc/man.c, Revision 1.70
1.70 ! kristaps 1: /* $Id: man.c,v 1.69 2010/05/15 20:51:40 kristaps 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:
30: #include "libman.h"
1.45 kristaps 31: #include "libmandoc.h"
1.1 kristaps 32:
1.27 kristaps 33: const char *const __man_merrnames[WERRMAX] = {
34: "invalid character", /* WNPRINT */
35: "invalid date format", /* WDATE */
36: "scope of prior line violated", /* WLNSCOPE */
1.51 kristaps 37: "over-zealous prior line scope violation", /* WLNSCOPE2 */
1.27 kristaps 38: "trailing whitespace", /* WTSPACE */
39: "unterminated quoted parameter", /* WTQUOTE */
40: "document has no body", /* WNODATA */
41: "document has no title/section", /* WNOTITLE */
42: "invalid escape sequence", /* WESCAPE */
1.28 kristaps 43: "invalid number format", /* WNUMFMT */
1.29 kristaps 44: "expected block head arguments", /* WHEADARGS */
45: "expected block body arguments", /* WBODYARGS */
46: "expected empty block head", /* WNHEADARGS */
47: "ill-formed macro", /* WMACROFORM */
1.30 kristaps 48: "scope open on exit", /* WEXITSCOPE */
1.35 kristaps 49: "no scope context", /* WNOSCOPE */
50: "literal context already open", /* WOLITERAL */
1.54 kristaps 51: "no literal context open", /* WNLITERAL */
1.55 kristaps 52: "document title should be uppercase", /* WTITLECASE */
1.60 kristaps 53: "deprecated comment style", /* WBADCOMMENT */
1.27 kristaps 54: };
55:
1.1 kristaps 56: const char *const __man_macronames[MAN_MAX] = {
1.21 kristaps 57: "br", "TH", "SH", "SS",
1.1 kristaps 58: "TP", "LP", "PP", "P",
59: "IP", "HP", "SM", "SB",
60: "BI", "IB", "BR", "RB",
1.11 kristaps 61: "R", "B", "I", "IR",
1.29 kristaps 62: "RI", "na", "i", "sp",
1.30 kristaps 63: "nf", "fi", "r", "RE",
1.52 kristaps 64: "RS", "DT", "UC", "PD",
1.70 ! kristaps 65: "Sp", "Vb", "Ve",
1.1 kristaps 66: };
67:
68: const char * const *man_macronames = __man_macronames;
69:
1.16 kristaps 70: static struct man_node *man_node_alloc(int, int,
1.53 kristaps 71: enum man_type, enum mant);
1.1 kristaps 72: static int man_node_append(struct man *,
73: struct man_node *);
1.54 kristaps 74: static void man_node_free(struct man_node *);
75: static void man_node_unlink(struct man *,
76: struct man_node *);
1.1 kristaps 77: static int man_ptext(struct man *, int, char *);
78: static int man_pmacro(struct man *, int, char *);
1.2 kristaps 79: static void man_free1(struct man *);
1.45 kristaps 80: static void man_alloc1(struct man *);
1.43 kristaps 81: static int macrowarn(struct man *, int, const char *);
1.1 kristaps 82:
83:
84: const struct man_node *
1.2 kristaps 85: man_node(const struct man *m)
1.1 kristaps 86: {
87:
1.2 kristaps 88: return(MAN_HALT & m->flags ? NULL : m->first);
1.1 kristaps 89: }
90:
91:
92: const struct man_meta *
1.2 kristaps 93: man_meta(const struct man *m)
1.1 kristaps 94: {
95:
1.2 kristaps 96: return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1 kristaps 97: }
98:
99:
1.45 kristaps 100: void
1.1 kristaps 101: man_reset(struct man *man)
102: {
103:
1.2 kristaps 104: man_free1(man);
1.45 kristaps 105: man_alloc1(man);
1.1 kristaps 106: }
107:
108:
109: void
110: man_free(struct man *man)
111: {
112:
1.2 kristaps 113: man_free1(man);
1.1 kristaps 114: free(man);
115: }
116:
117:
118: struct man *
1.7 kristaps 119: man_alloc(void *data, int pflags, const struct man_cb *cb)
1.1 kristaps 120: {
121: struct man *p;
122:
1.45 kristaps 123: p = mandoc_calloc(1, sizeof(struct man));
1.2 kristaps 124:
1.45 kristaps 125: if (cb)
126: memcpy(&p->cb, cb, sizeof(struct man_cb));
1.1 kristaps 127:
1.40 kristaps 128: man_hash_init();
1.4 kristaps 129: p->data = data;
1.7 kristaps 130: p->pflags = pflags;
1.45 kristaps 131:
132: man_alloc1(p);
1.1 kristaps 133: return(p);
134: }
135:
136:
137: int
138: man_endparse(struct man *m)
139: {
140:
1.3 kristaps 141: if (MAN_HALT & m->flags)
142: return(0);
143: else if (man_macroend(m))
144: return(1);
145: m->flags |= MAN_HALT;
146: return(0);
1.1 kristaps 147: }
148:
149:
150: int
151: man_parseln(struct man *m, int ln, char *buf)
152: {
153:
1.55 kristaps 154: return('.' == *buf || '\'' == *buf ?
1.1 kristaps 155: man_pmacro(m, ln, buf) :
156: man_ptext(m, ln, buf));
157: }
158:
159:
1.2 kristaps 160: static void
161: man_free1(struct man *man)
162: {
163:
164: if (man->first)
1.54 kristaps 165: man_node_delete(man, man->first);
1.2 kristaps 166: if (man->meta.title)
167: free(man->meta.title);
1.6 kristaps 168: if (man->meta.source)
169: free(man->meta.source);
1.2 kristaps 170: if (man->meta.vol)
171: free(man->meta.vol);
1.68 kristaps 172: if (man->meta.msec)
173: free(man->meta.msec);
1.2 kristaps 174: }
175:
176:
1.45 kristaps 177: static void
1.2 kristaps 178: man_alloc1(struct man *m)
179: {
180:
1.44 kristaps 181: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 182: m->flags = 0;
1.45 kristaps 183: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 184: m->first = m->last;
185: m->last->type = MAN_ROOT;
1.54 kristaps 186: m->last->tok = MAN_MAX;
1.2 kristaps 187: m->next = MAN_NEXT_CHILD;
188: }
189:
190:
1.1 kristaps 191: static int
192: man_node_append(struct man *man, struct man_node *p)
193: {
194:
195: assert(man->last);
196: assert(man->first);
197: assert(MAN_ROOT != p->type);
198:
199: switch (man->next) {
200: case (MAN_NEXT_SIBLING):
201: man->last->next = p;
202: p->prev = man->last;
203: p->parent = man->last->parent;
204: break;
205: case (MAN_NEXT_CHILD):
206: man->last->child = p;
207: p->parent = man->last;
208: break;
209: default:
210: abort();
211: /* NOTREACHED */
212: }
1.22 kristaps 213:
1.54 kristaps 214: assert(p->parent);
1.22 kristaps 215: p->parent->nchild++;
1.1 kristaps 216:
1.29 kristaps 217: if ( ! man_valid_pre(man, p))
218: return(0);
219:
220: switch (p->type) {
221: case (MAN_HEAD):
222: assert(MAN_BLOCK == p->parent->type);
223: p->parent->head = p;
224: break;
225: case (MAN_BODY):
226: assert(MAN_BLOCK == p->parent->type);
227: p->parent->body = p;
228: break;
229: default:
230: break;
231: }
232:
1.2 kristaps 233: man->last = p;
234:
1.1 kristaps 235: switch (p->type) {
1.2 kristaps 236: case (MAN_TEXT):
237: if ( ! man_valid_post(man))
238: return(0);
239: if ( ! man_action_post(man))
240: return(0);
1.1 kristaps 241: break;
242: default:
243: break;
244: }
245:
246: return(1);
247: }
248:
249:
250: static struct man_node *
1.53 kristaps 251: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1 kristaps 252: {
253: struct man_node *p;
254:
1.45 kristaps 255: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 256: p->line = line;
257: p->pos = pos;
258: p->type = type;
1.16 kristaps 259: p->tok = tok;
1.1 kristaps 260: return(p);
261: }
262:
263:
264: int
1.53 kristaps 265: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 266: {
267: struct man_node *p;
268:
1.16 kristaps 269: p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30 kristaps 270: if ( ! man_node_append(m, p))
271: return(0);
272: m->next = MAN_NEXT_CHILD;
273: return(1);
1.1 kristaps 274: }
275:
276:
277: int
1.53 kristaps 278: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 279: {
280: struct man_node *p;
281:
282: p = man_node_alloc(line, pos, MAN_HEAD, tok);
283: if ( ! man_node_append(m, p))
284: return(0);
285: m->next = MAN_NEXT_CHILD;
286: return(1);
287: }
288:
289:
290: int
1.53 kristaps 291: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 292: {
293: struct man_node *p;
294:
295: p = man_node_alloc(line, pos, MAN_BODY, tok);
296: if ( ! man_node_append(m, p))
297: return(0);
298: m->next = MAN_NEXT_CHILD;
299: return(1);
300: }
301:
302:
303: int
1.53 kristaps 304: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 305: {
306: struct man_node *p;
307:
308: p = man_node_alloc(line, pos, MAN_BLOCK, tok);
309: if ( ! man_node_append(m, p))
310: return(0);
311: m->next = MAN_NEXT_CHILD;
312: return(1);
313: }
314:
315:
1.61 kristaps 316: int
317: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1 kristaps 318: {
1.31 kristaps 319: struct man_node *n;
1.61 kristaps 320: size_t sv, len;
321:
322: len = strlen(word);
1.1 kristaps 323:
1.53 kristaps 324: n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
1.45 kristaps 325: n->string = mandoc_malloc(len + 1);
1.61 kristaps 326: sv = strlcpy(n->string, word, len + 1);
1.31 kristaps 327:
328: /* Prohibit truncation. */
329: assert(sv < len + 1);
330:
331: if ( ! man_node_append(m, n))
1.30 kristaps 332: return(0);
1.61 kristaps 333:
1.30 kristaps 334: m->next = MAN_NEXT_SIBLING;
335: return(1);
1.1 kristaps 336: }
337:
338:
1.54 kristaps 339: /*
340: * Free all of the resources held by a node. This does NOT unlink a
341: * node from its context; for that, see man_node_unlink().
342: */
343: static void
1.1 kristaps 344: man_node_free(struct man_node *p)
345: {
346:
347: if (p->string)
348: free(p->string);
349: free(p);
350: }
351:
352:
353: void
1.54 kristaps 354: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 355: {
356:
1.54 kristaps 357: while (p->child)
358: man_node_delete(m, p->child);
359:
360: man_node_unlink(m, p);
1.1 kristaps 361: man_node_free(p);
362: }
363:
364:
365: static int
366: man_ptext(struct man *m, int line, char *buf)
367: {
1.61 kristaps 368: int i;
1.60 kristaps 369:
370: /* Ignore bogus comments. */
371:
372: if ('\\' == buf[0] && '.' == buf[1] && '\"' == buf[2])
373: return(man_pwarn(m, line, 0, WBADCOMMENT));
1.31 kristaps 374:
1.35 kristaps 375: /* Literal free-form text whitespace is preserved. */
376:
377: if (MAN_LITERAL & m->flags) {
378: if ( ! man_word_alloc(m, line, 0, buf))
379: return(0);
380: goto descope;
381: }
382:
1.61 kristaps 383: /* Pump blank lines directly into the backend. */
1.31 kristaps 384:
385: for (i = 0; ' ' == buf[i]; i++)
386: /* Skip leading whitespace. */ ;
1.48 kristaps 387:
1.49 kristaps 388: if ('\0' == buf[i]) {
1.61 kristaps 389: /* Allocate a blank entry. */
390: if ( ! man_word_alloc(m, line, 0, ""))
1.31 kristaps 391: return(0);
392: goto descope;
393: }
394:
1.63 kristaps 395: /*
396: * Warn if the last un-escaped character is whitespace. Then
397: * strip away the remaining spaces (tabs stay!).
398: */
1.29 kristaps 399:
1.61 kristaps 400: i = (int)strlen(buf);
401: assert(i);
1.49 kristaps 402:
1.63 kristaps 403: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64 kristaps 404: if (i > 1 && '\\' != buf[i - 2])
1.49 kristaps 405: if ( ! man_pwarn(m, line, i - 1, WTSPACE))
406: return(0);
1.63 kristaps 407:
408: for (--i; i && ' ' == buf[i]; i--)
409: /* Spin back to non-space. */ ;
410:
411: /* Jump ahead of escaped whitespace. */
412: i += '\\' == buf[i] ? 2 : 1;
413:
414: buf[i] = '\0';
415: }
1.49 kristaps 416:
1.61 kristaps 417: if ( ! man_word_alloc(m, line, 0, buf))
1.1 kristaps 418: return(0);
1.65 kristaps 419:
420: /*
421: * End-of-sentence check. If the last character is an unescaped
422: * EOS character, then flag the node as being the end of a
423: * sentence. The front-end will know how to interpret this.
424: */
1.67 kristaps 425:
426: /* FIXME: chain of close delims. */
1.65 kristaps 427:
428: assert(i);
429:
1.66 kristaps 430: if (mandoc_eos(buf, (size_t)i))
1.65 kristaps 431: m->last->flags |= MAN_EOS;
1.31 kristaps 432:
433: descope:
1.11 kristaps 434: /*
1.29 kristaps 435: * Co-ordinate what happens with having a next-line scope open:
436: * first close out the element scope (if applicable), then close
437: * out the block scope (also if applicable).
1.11 kristaps 438: */
439:
1.29 kristaps 440: if (MAN_ELINE & m->flags) {
441: m->flags &= ~MAN_ELINE;
1.55 kristaps 442: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.29 kristaps 443: return(0);
444: }
445:
446: if ( ! (MAN_BLINE & m->flags))
1.11 kristaps 447: return(1);
1.29 kristaps 448: m->flags &= ~MAN_BLINE;
1.11 kristaps 449:
1.55 kristaps 450: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.11 kristaps 451: return(0);
1.29 kristaps 452: return(man_body_alloc(m, line, 0, m->last->tok));
1.1 kristaps 453: }
454:
455:
1.43 kristaps 456: static int
457: macrowarn(struct man *m, int ln, const char *buf)
458: {
459: if ( ! (MAN_IGN_MACRO & m->pflags))
1.62 kristaps 460: return(man_verr(m, ln, 0, "unknown macro: %s%s",
1.43 kristaps 461: buf, strlen(buf) > 3 ? "..." : ""));
462: return(man_vwarn(m, ln, 0, "unknown macro: %s%s",
463: buf, strlen(buf) > 3 ? "..." : ""));
464: }
465:
466:
1.1 kristaps 467: int
468: man_pmacro(struct man *m, int ln, char *buf)
469: {
1.58 kristaps 470: int i, j, ppos;
1.53 kristaps 471: enum mant tok;
1.34 kristaps 472: char mac[5];
473: struct man_node *n;
1.1 kristaps 474:
475: /* Comments and empties are quickly ignored. */
476:
1.46 kristaps 477: if ('\0' == buf[1])
478: return(1);
1.1 kristaps 479:
1.9 kristaps 480: i = 1;
481:
1.56 kristaps 482: /*
483: * Skip whitespace between the control character and initial
484: * text. "Whitespace" is both spaces and tabs.
485: */
1.62 kristaps 486:
1.57 kristaps 487: if (' ' == buf[i] || '\t' == buf[i]) {
1.9 kristaps 488: i++;
1.56 kristaps 489: while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1 kristaps 490: i++;
1.48 kristaps 491: if ('\0' == buf[i])
1.11 kristaps 492: goto out;
1.1 kristaps 493: }
494:
1.10 kristaps 495: ppos = i;
496:
1.1 kristaps 497: /* Copy the first word into a nil-terminated buffer. */
498:
1.10 kristaps 499: for (j = 0; j < 4; j++, i++) {
1.48 kristaps 500: if ('\0' == (mac[j] = buf[i]))
1.1 kristaps 501: break;
1.10 kristaps 502: else if (' ' == buf[i])
1.1 kristaps 503: break;
1.38 kristaps 504:
505: /* Check for invalid characters. */
506:
507: if (isgraph((u_char)buf[i]))
508: continue;
509: return(man_perr(m, ln, i, WNPRINT));
1.1 kristaps 510: }
511:
1.46 kristaps 512: mac[j] = '\0';
1.1 kristaps 513:
1.9 kristaps 514: if (j == 4 || j < 1) {
1.7 kristaps 515: if ( ! (MAN_IGN_MACRO & m->pflags)) {
1.29 kristaps 516: (void)man_perr(m, ln, ppos, WMACROFORM);
1.7 kristaps 517: goto err;
518: }
1.29 kristaps 519: if ( ! man_pwarn(m, ln, ppos, WMACROFORM))
1.7 kristaps 520: goto err;
1.12 kristaps 521: return(1);
1.7 kristaps 522: }
1.1 kristaps 523:
1.53 kristaps 524: if (MAN_MAX == (tok = man_hash_find(mac))) {
1.43 kristaps 525: if ( ! macrowarn(m, ln, mac))
1.7 kristaps 526: goto err;
1.12 kristaps 527: return(1);
1.1 kristaps 528: }
529:
530: /* The macro is sane. Jump to the next word. */
531:
532: while (buf[i] && ' ' == buf[i])
533: i++;
534:
1.62 kristaps 535: /*
536: * Trailing whitespace. Note that tabs are allowed to be passed
537: * into the parser as "text", so we only warn about spaces here.
538: */
1.48 kristaps 539:
540: if ('\0' == buf[i] && ' ' == buf[i - 1])
541: if ( ! man_pwarn(m, ln, i - 1, WTSPACE))
542: goto err;
543:
1.50 kristaps 544: /*
1.51 kristaps 545: * Remove prior ELINE macro, as it's being clobbering by a new
546: * macro. Note that NSCOPED macros do not close out ELINE
547: * macros---they don't print text---so we let those slip by.
1.50 kristaps 548: */
1.34 kristaps 549:
1.53 kristaps 550: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 551: m->flags & MAN_ELINE) {
552: assert(MAN_TEXT != m->last->type);
553:
554: /*
555: * This occurs in the following construction:
556: * .B
557: * .br
558: * .B
559: * .br
560: * I hate man macros.
561: * Flat-out disallow this madness.
562: */
563: if (MAN_NSCOPED & man_macros[m->last->tok].flags)
564: return(man_perr(m, ln, ppos, WLNSCOPE));
565:
1.34 kristaps 566: n = m->last;
1.51 kristaps 567:
568: assert(n);
1.34 kristaps 569: assert(NULL == n->child);
1.37 kristaps 570: assert(0 == n->nchild);
1.51 kristaps 571:
1.34 kristaps 572: if ( ! man_nwarn(m, n, WLNSCOPE))
573: return(0);
574:
1.54 kristaps 575: man_node_delete(m, n);
1.34 kristaps 576: m->flags &= ~MAN_ELINE;
577: }
578:
1.59 kristaps 579: /*
580: * Save the fact that we're in the next-line for a block. In
581: * this way, embedded roff instructions can "remember" state
582: * when they exit.
583: */
584:
585: if (MAN_BLINE & m->flags)
586: m->flags |= MAN_BPLINE;
587:
588: /* Call to handler... */
1.1 kristaps 589:
1.53 kristaps 590: assert(man_macros[tok].fp);
591: if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1 kristaps 592: goto err;
593:
1.11 kristaps 594: out:
1.50 kristaps 595: /*
596: * We weren't in a block-line scope when entering the
597: * above-parsed macro, so return.
598: */
599:
1.58 kristaps 600: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 601: m->flags &= ~MAN_ILINE;
1.29 kristaps 602: return(1);
1.50 kristaps 603: }
1.58 kristaps 604: m->flags &= ~MAN_BPLINE;
1.50 kristaps 605:
606: /*
607: * If we're in a block scope, then allow this macro to slip by
608: * without closing scope around it.
609: */
610:
611: if (MAN_ILINE & m->flags) {
612: m->flags &= ~MAN_ILINE;
613: return(1);
614: }
1.29 kristaps 615:
616: /*
617: * If we've opened a new next-line element scope, then return
618: * now, as the next line will close out the block scope.
619: */
620:
621: if (MAN_ELINE & m->flags)
622: return(1);
623:
624: /* Close out the block scope opened in the prior line. */
1.11 kristaps 625:
1.29 kristaps 626: assert(MAN_BLINE & m->flags);
627: m->flags &= ~MAN_BLINE;
1.11 kristaps 628:
1.55 kristaps 629: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.29 kristaps 630: return(0);
631: return(man_body_alloc(m, ln, 0, m->last->tok));
1.1 kristaps 632:
633: err: /* Error out. */
634:
1.2 kristaps 635: m->flags |= MAN_HALT;
1.1 kristaps 636: return(0);
637: }
1.3 kristaps 638:
1.4 kristaps 639:
640: int
641: man_verr(struct man *man, int ln, int pos, const char *fmt, ...)
642: {
643: char buf[256];
644: va_list ap;
645:
646: if (NULL == man->cb.man_err)
647: return(0);
648:
649: va_start(ap, fmt);
650: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
651: va_end(ap);
652: return((*man->cb.man_err)(man->data, ln, pos, buf));
653: }
654:
655:
656: int
657: man_vwarn(struct man *man, int ln, int pos, const char *fmt, ...)
658: {
659: char buf[256];
660: va_list ap;
661:
662: if (NULL == man->cb.man_warn)
663: return(0);
664:
665: va_start(ap, fmt);
666: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
667: va_end(ap);
668: return((*man->cb.man_warn)(man->data, ln, pos, buf));
669: }
670:
671:
1.23 kristaps 672: int
1.27 kristaps 673: man_err(struct man *m, int line, int pos, int iserr, enum merr type)
1.23 kristaps 674: {
675: const char *p;
676:
1.27 kristaps 677: p = __man_merrnames[(int)type];
1.23 kristaps 678: assert(p);
679:
680: if (iserr)
681: return(man_verr(m, line, pos, p));
682:
683: return(man_vwarn(m, line, pos, p));
1.51 kristaps 684: }
685:
686:
1.54 kristaps 687: /*
688: * Unlink a node from its context. If "m" is provided, the last parse
689: * point will also be adjusted accordingly.
690: */
691: static void
1.51 kristaps 692: man_node_unlink(struct man *m, struct man_node *n)
693: {
694:
1.54 kristaps 695: /* Adjust siblings. */
696:
697: if (n->prev)
1.51 kristaps 698: n->prev->next = n->next;
1.54 kristaps 699: if (n->next)
700: n->next->prev = n->prev;
701:
702: /* Adjust parent. */
703:
704: if (n->parent) {
705: n->parent->nchild--;
706: if (n->parent->child == n)
707: n->parent->child = n->prev ? n->prev : n->next;
708: }
709:
710: /* Adjust parse point, if applicable. */
711:
712: if (m && m->last == n) {
713: /*XXX: this can occur when bailing from validation. */
714: /*assert(NULL == n->next);*/
715: if (n->prev) {
1.51 kristaps 716: m->last = n->prev;
717: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 718: } else {
1.51 kristaps 719: m->last = n->parent;
720: m->next = MAN_NEXT_CHILD;
721: }
722: }
723:
1.54 kristaps 724: if (m && m->first == n)
725: m->first = NULL;
1.23 kristaps 726: }
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