Annotation of mandoc/man.c, Revision 1.63
1.63 ! kristaps 1: /* $Id: man.c,v 1.62 2010/05/08 07:30:19 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 manual section", /* WMSEC */
36: "invalid date format", /* WDATE */
37: "scope of prior line violated", /* WLNSCOPE */
1.51 kristaps 38: "over-zealous prior line scope violation", /* WLNSCOPE2 */
1.27 kristaps 39: "trailing whitespace", /* WTSPACE */
40: "unterminated quoted parameter", /* WTQUOTE */
41: "document has no body", /* WNODATA */
42: "document has no title/section", /* WNOTITLE */
43: "invalid escape sequence", /* WESCAPE */
1.28 kristaps 44: "invalid number format", /* WNUMFMT */
1.29 kristaps 45: "expected block head arguments", /* WHEADARGS */
46: "expected block body arguments", /* WBODYARGS */
47: "expected empty block head", /* WNHEADARGS */
48: "ill-formed macro", /* WMACROFORM */
1.30 kristaps 49: "scope open on exit", /* WEXITSCOPE */
1.35 kristaps 50: "no scope context", /* WNOSCOPE */
51: "literal context already open", /* WOLITERAL */
1.54 kristaps 52: "no literal context open", /* WNLITERAL */
53: "invalid nesting of roff declarations", /* WROFFNEST */
1.55 kristaps 54: "scope in roff instructions broken", /* WROFFSCOPE */
55: "document title should be uppercase", /* WTITLECASE */
1.60 kristaps 56: "deprecated comment style", /* WBADCOMMENT */
1.27 kristaps 57: };
58:
1.1 kristaps 59: const char *const __man_macronames[MAN_MAX] = {
1.21 kristaps 60: "br", "TH", "SH", "SS",
1.1 kristaps 61: "TP", "LP", "PP", "P",
62: "IP", "HP", "SM", "SB",
63: "BI", "IB", "BR", "RB",
1.11 kristaps 64: "R", "B", "I", "IR",
1.29 kristaps 65: "RI", "na", "i", "sp",
1.30 kristaps 66: "nf", "fi", "r", "RE",
1.52 kristaps 67: "RS", "DT", "UC", "PD",
1.54 kristaps 68: "Sp", "Vb", "Ve", "de",
69: "dei", "am", "ami", "ig",
70: ".",
1.1 kristaps 71: };
72:
73: const char * const *man_macronames = __man_macronames;
74:
1.16 kristaps 75: static struct man_node *man_node_alloc(int, int,
1.53 kristaps 76: enum man_type, enum mant);
1.1 kristaps 77: static int man_node_append(struct man *,
78: struct man_node *);
1.54 kristaps 79: static void man_node_free(struct man_node *);
80: static void man_node_unlink(struct man *,
81: struct man_node *);
1.1 kristaps 82: static int man_ptext(struct man *, int, char *);
83: static int man_pmacro(struct man *, int, char *);
1.2 kristaps 84: static void man_free1(struct man *);
1.45 kristaps 85: static void man_alloc1(struct man *);
1.43 kristaps 86: static int macrowarn(struct man *, int, const char *);
1.1 kristaps 87:
88:
89: const struct man_node *
1.2 kristaps 90: man_node(const struct man *m)
1.1 kristaps 91: {
92:
1.2 kristaps 93: return(MAN_HALT & m->flags ? NULL : m->first);
1.1 kristaps 94: }
95:
96:
97: const struct man_meta *
1.2 kristaps 98: man_meta(const struct man *m)
1.1 kristaps 99: {
100:
1.2 kristaps 101: return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1 kristaps 102: }
103:
104:
1.45 kristaps 105: void
1.1 kristaps 106: man_reset(struct man *man)
107: {
108:
1.2 kristaps 109: man_free1(man);
1.45 kristaps 110: man_alloc1(man);
1.1 kristaps 111: }
112:
113:
114: void
115: man_free(struct man *man)
116: {
117:
1.2 kristaps 118: man_free1(man);
1.1 kristaps 119: free(man);
120: }
121:
122:
123: struct man *
1.7 kristaps 124: man_alloc(void *data, int pflags, const struct man_cb *cb)
1.1 kristaps 125: {
126: struct man *p;
127:
1.45 kristaps 128: p = mandoc_calloc(1, sizeof(struct man));
1.2 kristaps 129:
1.45 kristaps 130: if (cb)
131: memcpy(&p->cb, cb, sizeof(struct man_cb));
1.1 kristaps 132:
1.40 kristaps 133: man_hash_init();
1.4 kristaps 134: p->data = data;
1.7 kristaps 135: p->pflags = pflags;
1.45 kristaps 136:
137: man_alloc1(p);
1.1 kristaps 138: return(p);
139: }
140:
141:
142: int
143: man_endparse(struct man *m)
144: {
145:
1.3 kristaps 146: if (MAN_HALT & m->flags)
147: return(0);
148: else if (man_macroend(m))
149: return(1);
150: m->flags |= MAN_HALT;
151: return(0);
1.1 kristaps 152: }
153:
154:
155: int
156: man_parseln(struct man *m, int ln, char *buf)
157: {
158:
1.55 kristaps 159: return('.' == *buf || '\'' == *buf ?
1.1 kristaps 160: man_pmacro(m, ln, buf) :
161: man_ptext(m, ln, buf));
162: }
163:
164:
1.2 kristaps 165: static void
166: man_free1(struct man *man)
167: {
168:
169: if (man->first)
1.54 kristaps 170: man_node_delete(man, man->first);
1.2 kristaps 171: if (man->meta.title)
172: free(man->meta.title);
1.6 kristaps 173: if (man->meta.source)
174: free(man->meta.source);
1.2 kristaps 175: if (man->meta.vol)
176: free(man->meta.vol);
177: }
178:
179:
1.45 kristaps 180: static void
1.2 kristaps 181: man_alloc1(struct man *m)
182: {
183:
1.44 kristaps 184: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 185: m->flags = 0;
1.45 kristaps 186: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 187: m->first = m->last;
188: m->last->type = MAN_ROOT;
1.54 kristaps 189: m->last->tok = MAN_MAX;
1.2 kristaps 190: m->next = MAN_NEXT_CHILD;
191: }
192:
193:
1.1 kristaps 194: static int
195: man_node_append(struct man *man, struct man_node *p)
196: {
197:
198: assert(man->last);
199: assert(man->first);
200: assert(MAN_ROOT != p->type);
201:
202: switch (man->next) {
203: case (MAN_NEXT_SIBLING):
204: man->last->next = p;
205: p->prev = man->last;
206: p->parent = man->last->parent;
207: break;
208: case (MAN_NEXT_CHILD):
209: man->last->child = p;
210: p->parent = man->last;
211: break;
212: default:
213: abort();
214: /* NOTREACHED */
215: }
1.22 kristaps 216:
1.54 kristaps 217: assert(p->parent);
1.22 kristaps 218: p->parent->nchild++;
1.1 kristaps 219:
1.29 kristaps 220: if ( ! man_valid_pre(man, p))
221: return(0);
222:
223: switch (p->type) {
224: case (MAN_HEAD):
225: assert(MAN_BLOCK == p->parent->type);
226: p->parent->head = p;
227: break;
228: case (MAN_BODY):
229: assert(MAN_BLOCK == p->parent->type);
230: p->parent->body = p;
231: break;
232: default:
233: break;
234: }
235:
1.2 kristaps 236: man->last = p;
237:
1.1 kristaps 238: switch (p->type) {
1.2 kristaps 239: case (MAN_TEXT):
240: if ( ! man_valid_post(man))
241: return(0);
242: if ( ! man_action_post(man))
243: return(0);
1.1 kristaps 244: break;
245: default:
246: break;
247: }
248:
249: return(1);
250: }
251:
252:
253: static struct man_node *
1.53 kristaps 254: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1 kristaps 255: {
256: struct man_node *p;
257:
1.45 kristaps 258: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 259: p->line = line;
260: p->pos = pos;
261: p->type = type;
1.16 kristaps 262: p->tok = tok;
1.1 kristaps 263: return(p);
264: }
265:
266:
267: int
1.53 kristaps 268: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 269: {
270: struct man_node *p;
271:
1.16 kristaps 272: p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30 kristaps 273: if ( ! man_node_append(m, p))
274: return(0);
275: m->next = MAN_NEXT_CHILD;
276: return(1);
1.1 kristaps 277: }
278:
279:
280: int
1.53 kristaps 281: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 282: {
283: struct man_node *p;
284:
285: p = man_node_alloc(line, pos, MAN_HEAD, tok);
286: if ( ! man_node_append(m, p))
287: return(0);
288: m->next = MAN_NEXT_CHILD;
289: return(1);
290: }
291:
292:
293: int
1.53 kristaps 294: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 295: {
296: struct man_node *p;
297:
298: p = man_node_alloc(line, pos, MAN_BODY, tok);
299: if ( ! man_node_append(m, p))
300: return(0);
301: m->next = MAN_NEXT_CHILD;
302: return(1);
303: }
304:
305:
306: int
1.53 kristaps 307: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 308: {
309: struct man_node *p;
310:
311: p = man_node_alloc(line, pos, MAN_BLOCK, tok);
312: if ( ! man_node_append(m, p))
313: return(0);
314: m->next = MAN_NEXT_CHILD;
315: return(1);
316: }
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;
1.61 kristaps 323: size_t sv, len;
324:
325: len = strlen(word);
1.1 kristaps 326:
1.53 kristaps 327: n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
1.45 kristaps 328: n->string = mandoc_malloc(len + 1);
1.61 kristaps 329: sv = strlcpy(n->string, word, len + 1);
1.31 kristaps 330:
331: /* Prohibit truncation. */
332: assert(sv < len + 1);
333:
334: if ( ! man_node_append(m, n))
1.30 kristaps 335: return(0);
1.61 kristaps 336:
1.30 kristaps 337: m->next = MAN_NEXT_SIBLING;
338: return(1);
1.1 kristaps 339: }
340:
341:
1.54 kristaps 342: /*
343: * Free all of the resources held by a node. This does NOT unlink a
344: * node from its context; for that, see man_node_unlink().
345: */
346: static void
1.1 kristaps 347: man_node_free(struct man_node *p)
348: {
349:
350: if (p->string)
351: free(p->string);
352: free(p);
353: }
354:
355:
356: void
1.54 kristaps 357: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 358: {
359:
1.54 kristaps 360: while (p->child)
361: man_node_delete(m, p->child);
362:
363: man_node_unlink(m, p);
1.1 kristaps 364: man_node_free(p);
365: }
366:
367:
368: static int
369: man_ptext(struct man *m, int line, char *buf)
370: {
1.61 kristaps 371: int i;
1.60 kristaps 372:
373: /* Ignore bogus comments. */
374:
375: if ('\\' == buf[0] && '.' == buf[1] && '\"' == buf[2])
376: return(man_pwarn(m, line, 0, WBADCOMMENT));
1.31 kristaps 377:
1.35 kristaps 378: /* Literal free-form text whitespace is preserved. */
379:
380: if (MAN_LITERAL & m->flags) {
381: if ( ! man_word_alloc(m, line, 0, buf))
382: return(0);
383: goto descope;
384: }
385:
1.61 kristaps 386: /* Pump blank lines directly into the backend. */
1.31 kristaps 387:
388: for (i = 0; ' ' == buf[i]; i++)
389: /* Skip leading whitespace. */ ;
1.48 kristaps 390:
1.49 kristaps 391: if ('\0' == buf[i]) {
1.61 kristaps 392: /* Allocate a blank entry. */
393: if ( ! man_word_alloc(m, line, 0, ""))
1.31 kristaps 394: return(0);
395: goto descope;
396: }
397:
1.63 ! kristaps 398: /*
! 399: * Warn if the last un-escaped character is whitespace. Then
! 400: * strip away the remaining spaces (tabs stay!).
! 401: */
1.29 kristaps 402:
1.61 kristaps 403: i = (int)strlen(buf);
404: assert(i);
1.49 kristaps 405:
1.63 ! kristaps 406: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
! 407: assert(i > 1);
! 408: if ('\\' != buf[i - 2])
1.49 kristaps 409: if ( ! man_pwarn(m, line, i - 1, WTSPACE))
410: return(0);
1.63 ! kristaps 411:
! 412: for (--i; i && ' ' == buf[i]; i--)
! 413: /* Spin back to non-space. */ ;
! 414:
! 415: /* Jump ahead of escaped whitespace. */
! 416: assert(i);
! 417: i += '\\' == buf[i] ? 2 : 1;
! 418:
! 419: buf[i] = '\0';
! 420: }
1.49 kristaps 421:
1.61 kristaps 422: if ( ! man_word_alloc(m, line, 0, buf))
1.1 kristaps 423: return(0);
1.31 kristaps 424:
425: descope:
1.11 kristaps 426: /*
1.29 kristaps 427: * Co-ordinate what happens with having a next-line scope open:
428: * first close out the element scope (if applicable), then close
429: * out the block scope (also if applicable).
1.11 kristaps 430: */
431:
1.29 kristaps 432: if (MAN_ELINE & m->flags) {
433: m->flags &= ~MAN_ELINE;
1.55 kristaps 434: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.29 kristaps 435: return(0);
436: }
437:
438: if ( ! (MAN_BLINE & m->flags))
1.11 kristaps 439: return(1);
1.29 kristaps 440: m->flags &= ~MAN_BLINE;
1.11 kristaps 441:
1.55 kristaps 442: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.11 kristaps 443: return(0);
1.29 kristaps 444: return(man_body_alloc(m, line, 0, m->last->tok));
1.1 kristaps 445: }
446:
447:
1.43 kristaps 448: static int
449: macrowarn(struct man *m, int ln, const char *buf)
450: {
451: if ( ! (MAN_IGN_MACRO & m->pflags))
1.62 kristaps 452: return(man_verr(m, ln, 0, "unknown macro: %s%s",
1.43 kristaps 453: buf, strlen(buf) > 3 ? "..." : ""));
454: return(man_vwarn(m, ln, 0, "unknown macro: %s%s",
455: buf, strlen(buf) > 3 ? "..." : ""));
456: }
457:
458:
1.1 kristaps 459: int
460: man_pmacro(struct man *m, int ln, char *buf)
461: {
1.58 kristaps 462: int i, j, ppos;
1.53 kristaps 463: enum mant tok;
1.34 kristaps 464: char mac[5];
465: struct man_node *n;
1.1 kristaps 466:
467: /* Comments and empties are quickly ignored. */
468:
1.46 kristaps 469: if ('\0' == buf[1])
470: return(1);
1.1 kristaps 471:
1.9 kristaps 472: i = 1;
473:
1.56 kristaps 474: /*
475: * Skip whitespace between the control character and initial
476: * text. "Whitespace" is both spaces and tabs.
477: */
1.62 kristaps 478:
1.57 kristaps 479: if (' ' == buf[i] || '\t' == buf[i]) {
1.9 kristaps 480: i++;
1.56 kristaps 481: while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1 kristaps 482: i++;
1.48 kristaps 483: if ('\0' == buf[i])
1.11 kristaps 484: goto out;
1.1 kristaps 485: }
486:
1.10 kristaps 487: ppos = i;
488:
1.1 kristaps 489: /* Copy the first word into a nil-terminated buffer. */
490:
1.10 kristaps 491: for (j = 0; j < 4; j++, i++) {
1.48 kristaps 492: if ('\0' == (mac[j] = buf[i]))
1.1 kristaps 493: break;
1.10 kristaps 494: else if (' ' == buf[i])
1.1 kristaps 495: break;
1.38 kristaps 496:
497: /* Check for invalid characters. */
498:
499: if (isgraph((u_char)buf[i]))
500: continue;
501: return(man_perr(m, ln, i, WNPRINT));
1.1 kristaps 502: }
503:
1.46 kristaps 504: mac[j] = '\0';
1.1 kristaps 505:
1.9 kristaps 506: if (j == 4 || j < 1) {
1.7 kristaps 507: if ( ! (MAN_IGN_MACRO & m->pflags)) {
1.29 kristaps 508: (void)man_perr(m, ln, ppos, WMACROFORM);
1.7 kristaps 509: goto err;
510: }
1.29 kristaps 511: if ( ! man_pwarn(m, ln, ppos, WMACROFORM))
1.7 kristaps 512: goto err;
1.12 kristaps 513: return(1);
1.7 kristaps 514: }
1.1 kristaps 515:
1.53 kristaps 516: if (MAN_MAX == (tok = man_hash_find(mac))) {
1.43 kristaps 517: if ( ! macrowarn(m, ln, mac))
1.7 kristaps 518: goto err;
1.12 kristaps 519: return(1);
1.1 kristaps 520: }
521:
522: /* The macro is sane. Jump to the next word. */
523:
524: while (buf[i] && ' ' == buf[i])
525: i++;
526:
1.62 kristaps 527: /*
528: * Trailing whitespace. Note that tabs are allowed to be passed
529: * into the parser as "text", so we only warn about spaces here.
530: */
1.48 kristaps 531:
532: if ('\0' == buf[i] && ' ' == buf[i - 1])
533: if ( ! man_pwarn(m, ln, i - 1, WTSPACE))
534: goto err;
535:
1.50 kristaps 536: /*
1.51 kristaps 537: * Remove prior ELINE macro, as it's being clobbering by a new
538: * macro. Note that NSCOPED macros do not close out ELINE
539: * macros---they don't print text---so we let those slip by.
1.59 kristaps 540: * NOTE: we don't allow roff blocks (NOCLOSE) to be embedded
541: * here because that would stipulate blocks as children of
542: * elements!
1.50 kristaps 543: */
1.34 kristaps 544:
1.53 kristaps 545: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 546: m->flags & MAN_ELINE) {
547: assert(MAN_TEXT != m->last->type);
548:
549: /*
550: * This occurs in the following construction:
551: * .B
552: * .br
553: * .B
554: * .br
555: * I hate man macros.
556: * Flat-out disallow this madness.
557: */
558: if (MAN_NSCOPED & man_macros[m->last->tok].flags)
559: return(man_perr(m, ln, ppos, WLNSCOPE));
560:
1.34 kristaps 561: n = m->last;
1.51 kristaps 562:
563: assert(n);
1.34 kristaps 564: assert(NULL == n->child);
1.37 kristaps 565: assert(0 == n->nchild);
1.51 kristaps 566:
1.34 kristaps 567: if ( ! man_nwarn(m, n, WLNSCOPE))
568: return(0);
569:
1.54 kristaps 570: man_node_delete(m, n);
1.34 kristaps 571: m->flags &= ~MAN_ELINE;
572: }
573:
1.59 kristaps 574: /*
575: * Save the fact that we're in the next-line for a block. In
576: * this way, embedded roff instructions can "remember" state
577: * when they exit.
578: */
579:
580: if (MAN_BLINE & m->flags)
581: m->flags |= MAN_BPLINE;
582:
583: /* Call to handler... */
1.1 kristaps 584:
1.53 kristaps 585: assert(man_macros[tok].fp);
586: if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1 kristaps 587: goto err;
588:
1.11 kristaps 589: out:
1.50 kristaps 590: /*
591: * We weren't in a block-line scope when entering the
592: * above-parsed macro, so return.
593: */
594:
1.58 kristaps 595: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 596: m->flags &= ~MAN_ILINE;
1.29 kristaps 597: return(1);
1.50 kristaps 598: }
1.58 kristaps 599: m->flags &= ~MAN_BPLINE;
1.50 kristaps 600:
601: /*
602: * If we're in a block scope, then allow this macro to slip by
603: * without closing scope around it.
604: */
605:
606: if (MAN_ILINE & m->flags) {
607: m->flags &= ~MAN_ILINE;
608: return(1);
609: }
1.29 kristaps 610:
611: /*
612: * If we've opened a new next-line element scope, then return
613: * now, as the next line will close out the block scope.
614: */
615:
616: if (MAN_ELINE & m->flags)
617: return(1);
618:
619: /* Close out the block scope opened in the prior line. */
1.11 kristaps 620:
1.29 kristaps 621: assert(MAN_BLINE & m->flags);
622: m->flags &= ~MAN_BLINE;
1.11 kristaps 623:
1.55 kristaps 624: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.29 kristaps 625: return(0);
626: return(man_body_alloc(m, ln, 0, m->last->tok));
1.1 kristaps 627:
628: err: /* Error out. */
629:
1.2 kristaps 630: m->flags |= MAN_HALT;
1.1 kristaps 631: return(0);
632: }
1.3 kristaps 633:
1.4 kristaps 634:
635: int
636: man_verr(struct man *man, int ln, int pos, const char *fmt, ...)
637: {
638: char buf[256];
639: va_list ap;
640:
641: if (NULL == man->cb.man_err)
642: return(0);
643:
644: va_start(ap, fmt);
645: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
646: va_end(ap);
647: return((*man->cb.man_err)(man->data, ln, pos, buf));
648: }
649:
650:
651: int
652: man_vwarn(struct man *man, int ln, int pos, const char *fmt, ...)
653: {
654: char buf[256];
655: va_list ap;
656:
657: if (NULL == man->cb.man_warn)
658: return(0);
659:
660: va_start(ap, fmt);
661: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
662: va_end(ap);
663: return((*man->cb.man_warn)(man->data, ln, pos, buf));
664: }
665:
666:
1.23 kristaps 667: int
1.27 kristaps 668: man_err(struct man *m, int line, int pos, int iserr, enum merr type)
1.23 kristaps 669: {
670: const char *p;
671:
1.27 kristaps 672: p = __man_merrnames[(int)type];
1.23 kristaps 673: assert(p);
674:
675: if (iserr)
676: return(man_verr(m, line, pos, p));
677:
678: return(man_vwarn(m, line, pos, p));
1.51 kristaps 679: }
680:
681:
1.54 kristaps 682: /*
683: * Unlink a node from its context. If "m" is provided, the last parse
684: * point will also be adjusted accordingly.
685: */
686: static void
1.51 kristaps 687: man_node_unlink(struct man *m, struct man_node *n)
688: {
689:
1.54 kristaps 690: /* Adjust siblings. */
691:
692: if (n->prev)
1.51 kristaps 693: n->prev->next = n->next;
1.54 kristaps 694: if (n->next)
695: n->next->prev = n->prev;
696:
697: /* Adjust parent. */
698:
699: if (n->parent) {
700: n->parent->nchild--;
701: if (n->parent->child == n)
702: n->parent->child = n->prev ? n->prev : n->next;
703: }
704:
705: /* Adjust parse point, if applicable. */
706:
707: if (m && m->last == n) {
708: /*XXX: this can occur when bailing from validation. */
709: /*assert(NULL == n->next);*/
710: if (n->prev) {
1.51 kristaps 711: m->last = n->prev;
712: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 713: } else {
1.51 kristaps 714: m->last = n->parent;
715: m->next = MAN_NEXT_CHILD;
716: }
717: }
718:
1.54 kristaps 719: if (m && m->first == n)
720: m->first = NULL;
1.23 kristaps 721: }
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