Annotation of mandoc/man.c, Revision 1.68
1.68 ! kristaps 1: /* $Id: man.c,v 1.67 2010/05/15 06:48:13 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 */
52: "invalid nesting of roff declarations", /* WROFFNEST */
1.55 kristaps 53: "scope in roff instructions broken", /* WROFFSCOPE */
54: "document title should be uppercase", /* WTITLECASE */
1.60 kristaps 55: "deprecated comment style", /* WBADCOMMENT */
1.27 kristaps 56: };
57:
1.1 kristaps 58: const char *const __man_macronames[MAN_MAX] = {
1.21 kristaps 59: "br", "TH", "SH", "SS",
1.1 kristaps 60: "TP", "LP", "PP", "P",
61: "IP", "HP", "SM", "SB",
62: "BI", "IB", "BR", "RB",
1.11 kristaps 63: "R", "B", "I", "IR",
1.29 kristaps 64: "RI", "na", "i", "sp",
1.30 kristaps 65: "nf", "fi", "r", "RE",
1.52 kristaps 66: "RS", "DT", "UC", "PD",
1.54 kristaps 67: "Sp", "Vb", "Ve", "de",
68: "dei", "am", "ami", "ig",
69: ".",
1.1 kristaps 70: };
71:
72: const char * const *man_macronames = __man_macronames;
73:
1.16 kristaps 74: static struct man_node *man_node_alloc(int, int,
1.53 kristaps 75: enum man_type, enum mant);
1.1 kristaps 76: static int man_node_append(struct man *,
77: struct man_node *);
1.54 kristaps 78: static void man_node_free(struct man_node *);
79: static void man_node_unlink(struct man *,
80: struct man_node *);
1.1 kristaps 81: static int man_ptext(struct man *, int, char *);
82: static int man_pmacro(struct man *, int, char *);
1.2 kristaps 83: static void man_free1(struct man *);
1.45 kristaps 84: static void man_alloc1(struct man *);
1.43 kristaps 85: static int macrowarn(struct man *, int, const char *);
1.1 kristaps 86:
87:
88: const struct man_node *
1.2 kristaps 89: man_node(const struct man *m)
1.1 kristaps 90: {
91:
1.2 kristaps 92: return(MAN_HALT & m->flags ? NULL : m->first);
1.1 kristaps 93: }
94:
95:
96: const struct man_meta *
1.2 kristaps 97: man_meta(const struct man *m)
1.1 kristaps 98: {
99:
1.2 kristaps 100: return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1 kristaps 101: }
102:
103:
1.45 kristaps 104: void
1.1 kristaps 105: man_reset(struct man *man)
106: {
107:
1.2 kristaps 108: man_free1(man);
1.45 kristaps 109: man_alloc1(man);
1.1 kristaps 110: }
111:
112:
113: void
114: man_free(struct man *man)
115: {
116:
1.2 kristaps 117: man_free1(man);
1.1 kristaps 118: free(man);
119: }
120:
121:
122: struct man *
1.7 kristaps 123: man_alloc(void *data, int pflags, const struct man_cb *cb)
1.1 kristaps 124: {
125: struct man *p;
126:
1.45 kristaps 127: p = mandoc_calloc(1, sizeof(struct man));
1.2 kristaps 128:
1.45 kristaps 129: if (cb)
130: memcpy(&p->cb, cb, sizeof(struct man_cb));
1.1 kristaps 131:
1.40 kristaps 132: man_hash_init();
1.4 kristaps 133: p->data = data;
1.7 kristaps 134: p->pflags = pflags;
1.45 kristaps 135:
136: man_alloc1(p);
1.1 kristaps 137: return(p);
138: }
139:
140:
141: int
142: man_endparse(struct man *m)
143: {
144:
1.3 kristaps 145: if (MAN_HALT & m->flags)
146: return(0);
147: else if (man_macroend(m))
148: return(1);
149: m->flags |= MAN_HALT;
150: return(0);
1.1 kristaps 151: }
152:
153:
154: int
155: man_parseln(struct man *m, int ln, char *buf)
156: {
157:
1.55 kristaps 158: return('.' == *buf || '\'' == *buf ?
1.1 kristaps 159: man_pmacro(m, ln, buf) :
160: man_ptext(m, ln, buf));
161: }
162:
163:
1.2 kristaps 164: static void
165: man_free1(struct man *man)
166: {
167:
168: if (man->first)
1.54 kristaps 169: man_node_delete(man, man->first);
1.2 kristaps 170: if (man->meta.title)
171: free(man->meta.title);
1.6 kristaps 172: if (man->meta.source)
173: free(man->meta.source);
1.2 kristaps 174: if (man->meta.vol)
175: free(man->meta.vol);
1.68 ! kristaps 176: if (man->meta.msec)
! 177: free(man->meta.msec);
1.2 kristaps 178: }
179:
180:
1.45 kristaps 181: static void
1.2 kristaps 182: man_alloc1(struct man *m)
183: {
184:
1.44 kristaps 185: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 186: m->flags = 0;
1.45 kristaps 187: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 188: m->first = m->last;
189: m->last->type = MAN_ROOT;
1.54 kristaps 190: m->last->tok = MAN_MAX;
1.2 kristaps 191: m->next = MAN_NEXT_CHILD;
192: }
193:
194:
1.1 kristaps 195: static int
196: man_node_append(struct man *man, struct man_node *p)
197: {
198:
199: assert(man->last);
200: assert(man->first);
201: assert(MAN_ROOT != p->type);
202:
203: switch (man->next) {
204: case (MAN_NEXT_SIBLING):
205: man->last->next = p;
206: p->prev = man->last;
207: p->parent = man->last->parent;
208: break;
209: case (MAN_NEXT_CHILD):
210: man->last->child = p;
211: p->parent = man->last;
212: break;
213: default:
214: abort();
215: /* NOTREACHED */
216: }
1.22 kristaps 217:
1.54 kristaps 218: assert(p->parent);
1.22 kristaps 219: p->parent->nchild++;
1.1 kristaps 220:
1.29 kristaps 221: if ( ! man_valid_pre(man, p))
222: return(0);
223:
224: switch (p->type) {
225: case (MAN_HEAD):
226: assert(MAN_BLOCK == p->parent->type);
227: p->parent->head = p;
228: break;
229: case (MAN_BODY):
230: assert(MAN_BLOCK == p->parent->type);
231: p->parent->body = p;
232: break;
233: default:
234: break;
235: }
236:
1.2 kristaps 237: man->last = p;
238:
1.1 kristaps 239: switch (p->type) {
1.2 kristaps 240: case (MAN_TEXT):
241: if ( ! man_valid_post(man))
242: return(0);
243: if ( ! man_action_post(man))
244: return(0);
1.1 kristaps 245: break;
246: default:
247: break;
248: }
249:
250: return(1);
251: }
252:
253:
254: static struct man_node *
1.53 kristaps 255: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1 kristaps 256: {
257: struct man_node *p;
258:
1.45 kristaps 259: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 260: p->line = line;
261: p->pos = pos;
262: p->type = type;
1.16 kristaps 263: p->tok = tok;
1.1 kristaps 264: return(p);
265: }
266:
267:
268: int
1.53 kristaps 269: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 270: {
271: struct man_node *p;
272:
1.16 kristaps 273: p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30 kristaps 274: if ( ! man_node_append(m, p))
275: return(0);
276: m->next = MAN_NEXT_CHILD;
277: return(1);
1.1 kristaps 278: }
279:
280:
281: int
1.53 kristaps 282: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 283: {
284: struct man_node *p;
285:
286: p = man_node_alloc(line, pos, MAN_HEAD, tok);
287: if ( ! man_node_append(m, p))
288: return(0);
289: m->next = MAN_NEXT_CHILD;
290: return(1);
291: }
292:
293:
294: int
1.53 kristaps 295: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 296: {
297: struct man_node *p;
298:
299: p = man_node_alloc(line, pos, MAN_BODY, tok);
300: if ( ! man_node_append(m, p))
301: return(0);
302: m->next = MAN_NEXT_CHILD;
303: return(1);
304: }
305:
306:
307: int
1.53 kristaps 308: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 309: {
310: struct man_node *p;
311:
312: p = man_node_alloc(line, pos, MAN_BLOCK, tok);
313: if ( ! man_node_append(m, p))
314: return(0);
315: m->next = MAN_NEXT_CHILD;
316: return(1);
317: }
318:
319:
1.61 kristaps 320: int
321: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1 kristaps 322: {
1.31 kristaps 323: struct man_node *n;
1.61 kristaps 324: size_t sv, len;
325:
326: len = strlen(word);
1.1 kristaps 327:
1.53 kristaps 328: n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
1.45 kristaps 329: n->string = mandoc_malloc(len + 1);
1.61 kristaps 330: sv = strlcpy(n->string, word, len + 1);
1.31 kristaps 331:
332: /* Prohibit truncation. */
333: assert(sv < len + 1);
334:
335: if ( ! man_node_append(m, n))
1.30 kristaps 336: return(0);
1.61 kristaps 337:
1.30 kristaps 338: m->next = MAN_NEXT_SIBLING;
339: return(1);
1.1 kristaps 340: }
341:
342:
1.54 kristaps 343: /*
344: * Free all of the resources held by a node. This does NOT unlink a
345: * node from its context; for that, see man_node_unlink().
346: */
347: static void
1.1 kristaps 348: man_node_free(struct man_node *p)
349: {
350:
351: if (p->string)
352: free(p->string);
353: free(p);
354: }
355:
356:
357: void
1.54 kristaps 358: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 359: {
360:
1.54 kristaps 361: while (p->child)
362: man_node_delete(m, p->child);
363:
364: man_node_unlink(m, p);
1.1 kristaps 365: man_node_free(p);
366: }
367:
368:
369: static int
370: man_ptext(struct man *m, int line, char *buf)
371: {
1.61 kristaps 372: int i;
1.60 kristaps 373:
374: /* Ignore bogus comments. */
375:
376: if ('\\' == buf[0] && '.' == buf[1] && '\"' == buf[2])
377: return(man_pwarn(m, line, 0, WBADCOMMENT));
1.31 kristaps 378:
1.35 kristaps 379: /* Literal free-form text whitespace is preserved. */
380:
381: if (MAN_LITERAL & m->flags) {
382: if ( ! man_word_alloc(m, line, 0, buf))
383: return(0);
384: goto descope;
385: }
386:
1.61 kristaps 387: /* Pump blank lines directly into the backend. */
1.31 kristaps 388:
389: for (i = 0; ' ' == buf[i]; i++)
390: /* Skip leading whitespace. */ ;
1.48 kristaps 391:
1.49 kristaps 392: if ('\0' == buf[i]) {
1.61 kristaps 393: /* Allocate a blank entry. */
394: if ( ! man_word_alloc(m, line, 0, ""))
1.31 kristaps 395: return(0);
396: goto descope;
397: }
398:
1.63 kristaps 399: /*
400: * Warn if the last un-escaped character is whitespace. Then
401: * strip away the remaining spaces (tabs stay!).
402: */
1.29 kristaps 403:
1.61 kristaps 404: i = (int)strlen(buf);
405: assert(i);
1.49 kristaps 406:
1.63 kristaps 407: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64 kristaps 408: if (i > 1 && '\\' != 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: i += '\\' == buf[i] ? 2 : 1;
417:
418: buf[i] = '\0';
419: }
1.49 kristaps 420:
1.61 kristaps 421: if ( ! man_word_alloc(m, line, 0, buf))
1.1 kristaps 422: return(0);
1.65 kristaps 423:
424: /*
425: * End-of-sentence check. If the last character is an unescaped
426: * EOS character, then flag the node as being the end of a
427: * sentence. The front-end will know how to interpret this.
428: */
1.67 kristaps 429:
430: /* FIXME: chain of close delims. */
1.65 kristaps 431:
432: assert(i);
433:
1.66 kristaps 434: if (mandoc_eos(buf, (size_t)i))
1.65 kristaps 435: m->last->flags |= MAN_EOS;
1.31 kristaps 436:
437: descope:
1.11 kristaps 438: /*
1.29 kristaps 439: * Co-ordinate what happens with having a next-line scope open:
440: * first close out the element scope (if applicable), then close
441: * out the block scope (also if applicable).
1.11 kristaps 442: */
443:
1.29 kristaps 444: if (MAN_ELINE & m->flags) {
445: m->flags &= ~MAN_ELINE;
1.55 kristaps 446: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.29 kristaps 447: return(0);
448: }
449:
450: if ( ! (MAN_BLINE & m->flags))
1.11 kristaps 451: return(1);
1.29 kristaps 452: m->flags &= ~MAN_BLINE;
1.11 kristaps 453:
1.55 kristaps 454: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.11 kristaps 455: return(0);
1.29 kristaps 456: return(man_body_alloc(m, line, 0, m->last->tok));
1.1 kristaps 457: }
458:
459:
1.43 kristaps 460: static int
461: macrowarn(struct man *m, int ln, const char *buf)
462: {
463: if ( ! (MAN_IGN_MACRO & m->pflags))
1.62 kristaps 464: return(man_verr(m, ln, 0, "unknown macro: %s%s",
1.43 kristaps 465: buf, strlen(buf) > 3 ? "..." : ""));
466: return(man_vwarn(m, ln, 0, "unknown macro: %s%s",
467: buf, strlen(buf) > 3 ? "..." : ""));
468: }
469:
470:
1.1 kristaps 471: int
472: man_pmacro(struct man *m, int ln, char *buf)
473: {
1.58 kristaps 474: int i, j, ppos;
1.53 kristaps 475: enum mant tok;
1.34 kristaps 476: char mac[5];
477: struct man_node *n;
1.1 kristaps 478:
479: /* Comments and empties are quickly ignored. */
480:
1.46 kristaps 481: if ('\0' == buf[1])
482: return(1);
1.1 kristaps 483:
1.9 kristaps 484: i = 1;
485:
1.56 kristaps 486: /*
487: * Skip whitespace between the control character and initial
488: * text. "Whitespace" is both spaces and tabs.
489: */
1.62 kristaps 490:
1.57 kristaps 491: if (' ' == buf[i] || '\t' == buf[i]) {
1.9 kristaps 492: i++;
1.56 kristaps 493: while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1 kristaps 494: i++;
1.48 kristaps 495: if ('\0' == buf[i])
1.11 kristaps 496: goto out;
1.1 kristaps 497: }
498:
1.10 kristaps 499: ppos = i;
500:
1.1 kristaps 501: /* Copy the first word into a nil-terminated buffer. */
502:
1.10 kristaps 503: for (j = 0; j < 4; j++, i++) {
1.48 kristaps 504: if ('\0' == (mac[j] = buf[i]))
1.1 kristaps 505: break;
1.10 kristaps 506: else if (' ' == buf[i])
1.1 kristaps 507: break;
1.38 kristaps 508:
509: /* Check for invalid characters. */
510:
511: if (isgraph((u_char)buf[i]))
512: continue;
513: return(man_perr(m, ln, i, WNPRINT));
1.1 kristaps 514: }
515:
1.46 kristaps 516: mac[j] = '\0';
1.1 kristaps 517:
1.9 kristaps 518: if (j == 4 || j < 1) {
1.7 kristaps 519: if ( ! (MAN_IGN_MACRO & m->pflags)) {
1.29 kristaps 520: (void)man_perr(m, ln, ppos, WMACROFORM);
1.7 kristaps 521: goto err;
522: }
1.29 kristaps 523: if ( ! man_pwarn(m, ln, ppos, WMACROFORM))
1.7 kristaps 524: goto err;
1.12 kristaps 525: return(1);
1.7 kristaps 526: }
1.1 kristaps 527:
1.53 kristaps 528: if (MAN_MAX == (tok = man_hash_find(mac))) {
1.43 kristaps 529: if ( ! macrowarn(m, ln, mac))
1.7 kristaps 530: goto err;
1.12 kristaps 531: return(1);
1.1 kristaps 532: }
533:
534: /* The macro is sane. Jump to the next word. */
535:
536: while (buf[i] && ' ' == buf[i])
537: i++;
538:
1.62 kristaps 539: /*
540: * Trailing whitespace. Note that tabs are allowed to be passed
541: * into the parser as "text", so we only warn about spaces here.
542: */
1.48 kristaps 543:
544: if ('\0' == buf[i] && ' ' == buf[i - 1])
545: if ( ! man_pwarn(m, ln, i - 1, WTSPACE))
546: goto err;
547:
1.50 kristaps 548: /*
1.51 kristaps 549: * Remove prior ELINE macro, as it's being clobbering by a new
550: * macro. Note that NSCOPED macros do not close out ELINE
551: * macros---they don't print text---so we let those slip by.
1.59 kristaps 552: * NOTE: we don't allow roff blocks (NOCLOSE) to be embedded
553: * here because that would stipulate blocks as children of
554: * elements!
1.50 kristaps 555: */
1.34 kristaps 556:
1.53 kristaps 557: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 558: m->flags & MAN_ELINE) {
559: assert(MAN_TEXT != m->last->type);
560:
561: /*
562: * This occurs in the following construction:
563: * .B
564: * .br
565: * .B
566: * .br
567: * I hate man macros.
568: * Flat-out disallow this madness.
569: */
570: if (MAN_NSCOPED & man_macros[m->last->tok].flags)
571: return(man_perr(m, ln, ppos, WLNSCOPE));
572:
1.34 kristaps 573: n = m->last;
1.51 kristaps 574:
575: assert(n);
1.34 kristaps 576: assert(NULL == n->child);
1.37 kristaps 577: assert(0 == n->nchild);
1.51 kristaps 578:
1.34 kristaps 579: if ( ! man_nwarn(m, n, WLNSCOPE))
580: return(0);
581:
1.54 kristaps 582: man_node_delete(m, n);
1.34 kristaps 583: m->flags &= ~MAN_ELINE;
584: }
585:
1.59 kristaps 586: /*
587: * Save the fact that we're in the next-line for a block. In
588: * this way, embedded roff instructions can "remember" state
589: * when they exit.
590: */
591:
592: if (MAN_BLINE & m->flags)
593: m->flags |= MAN_BPLINE;
594:
595: /* Call to handler... */
1.1 kristaps 596:
1.53 kristaps 597: assert(man_macros[tok].fp);
598: if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1 kristaps 599: goto err;
600:
1.11 kristaps 601: out:
1.50 kristaps 602: /*
603: * We weren't in a block-line scope when entering the
604: * above-parsed macro, so return.
605: */
606:
1.58 kristaps 607: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 608: m->flags &= ~MAN_ILINE;
1.29 kristaps 609: return(1);
1.50 kristaps 610: }
1.58 kristaps 611: m->flags &= ~MAN_BPLINE;
1.50 kristaps 612:
613: /*
614: * If we're in a block scope, then allow this macro to slip by
615: * without closing scope around it.
616: */
617:
618: if (MAN_ILINE & m->flags) {
619: m->flags &= ~MAN_ILINE;
620: return(1);
621: }
1.29 kristaps 622:
623: /*
624: * If we've opened a new next-line element scope, then return
625: * now, as the next line will close out the block scope.
626: */
627:
628: if (MAN_ELINE & m->flags)
629: return(1);
630:
631: /* Close out the block scope opened in the prior line. */
1.11 kristaps 632:
1.29 kristaps 633: assert(MAN_BLINE & m->flags);
634: m->flags &= ~MAN_BLINE;
1.11 kristaps 635:
1.55 kristaps 636: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.29 kristaps 637: return(0);
638: return(man_body_alloc(m, ln, 0, m->last->tok));
1.1 kristaps 639:
640: err: /* Error out. */
641:
1.2 kristaps 642: m->flags |= MAN_HALT;
1.1 kristaps 643: return(0);
644: }
1.3 kristaps 645:
1.4 kristaps 646:
647: int
648: man_verr(struct man *man, int ln, int pos, const char *fmt, ...)
649: {
650: char buf[256];
651: va_list ap;
652:
653: if (NULL == man->cb.man_err)
654: return(0);
655:
656: va_start(ap, fmt);
657: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
658: va_end(ap);
659: return((*man->cb.man_err)(man->data, ln, pos, buf));
660: }
661:
662:
663: int
664: man_vwarn(struct man *man, int ln, int pos, const char *fmt, ...)
665: {
666: char buf[256];
667: va_list ap;
668:
669: if (NULL == man->cb.man_warn)
670: return(0);
671:
672: va_start(ap, fmt);
673: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
674: va_end(ap);
675: return((*man->cb.man_warn)(man->data, ln, pos, buf));
676: }
677:
678:
1.23 kristaps 679: int
1.27 kristaps 680: man_err(struct man *m, int line, int pos, int iserr, enum merr type)
1.23 kristaps 681: {
682: const char *p;
683:
1.27 kristaps 684: p = __man_merrnames[(int)type];
1.23 kristaps 685: assert(p);
686:
687: if (iserr)
688: return(man_verr(m, line, pos, p));
689:
690: return(man_vwarn(m, line, pos, p));
1.51 kristaps 691: }
692:
693:
1.54 kristaps 694: /*
695: * Unlink a node from its context. If "m" is provided, the last parse
696: * point will also be adjusted accordingly.
697: */
698: static void
1.51 kristaps 699: man_node_unlink(struct man *m, struct man_node *n)
700: {
701:
1.54 kristaps 702: /* Adjust siblings. */
703:
704: if (n->prev)
1.51 kristaps 705: n->prev->next = n->next;
1.54 kristaps 706: if (n->next)
707: n->next->prev = n->prev;
708:
709: /* Adjust parent. */
710:
711: if (n->parent) {
712: n->parent->nchild--;
713: if (n->parent->child == n)
714: n->parent->child = n->prev ? n->prev : n->next;
715: }
716:
717: /* Adjust parse point, if applicable. */
718:
719: if (m && m->last == n) {
720: /*XXX: this can occur when bailing from validation. */
721: /*assert(NULL == n->next);*/
722: if (n->prev) {
1.51 kristaps 723: m->last = n->prev;
724: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 725: } else {
1.51 kristaps 726: m->last = n->parent;
727: m->next = MAN_NEXT_CHILD;
728: }
729: }
730:
1.54 kristaps 731: if (m && m->first == n)
732: m->first = NULL;
1.23 kristaps 733: }
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