Annotation of mandoc/man.c, Revision 1.60
1.60 ! kristaps 1: /* $Id: man.c,v 1.59 2010/03/29 10:10:35 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 *);
1.31 kristaps 86: static int pstring(struct man *, int, int,
87: const char *, size_t);
1.43 kristaps 88: static int macrowarn(struct man *, int, const char *);
1.1 kristaps 89:
90:
91: const struct man_node *
1.2 kristaps 92: man_node(const struct man *m)
1.1 kristaps 93: {
94:
1.2 kristaps 95: return(MAN_HALT & m->flags ? NULL : m->first);
1.1 kristaps 96: }
97:
98:
99: const struct man_meta *
1.2 kristaps 100: man_meta(const struct man *m)
1.1 kristaps 101: {
102:
1.2 kristaps 103: return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1 kristaps 104: }
105:
106:
1.45 kristaps 107: void
1.1 kristaps 108: man_reset(struct man *man)
109: {
110:
1.2 kristaps 111: man_free1(man);
1.45 kristaps 112: man_alloc1(man);
1.1 kristaps 113: }
114:
115:
116: void
117: man_free(struct man *man)
118: {
119:
1.2 kristaps 120: man_free1(man);
1.1 kristaps 121: free(man);
122: }
123:
124:
125: struct man *
1.7 kristaps 126: man_alloc(void *data, int pflags, const struct man_cb *cb)
1.1 kristaps 127: {
128: struct man *p;
129:
1.45 kristaps 130: p = mandoc_calloc(1, sizeof(struct man));
1.2 kristaps 131:
1.45 kristaps 132: if (cb)
133: memcpy(&p->cb, cb, sizeof(struct man_cb));
1.1 kristaps 134:
1.40 kristaps 135: man_hash_init();
1.4 kristaps 136: p->data = data;
1.7 kristaps 137: p->pflags = pflags;
1.45 kristaps 138:
139: man_alloc1(p);
1.1 kristaps 140: return(p);
141: }
142:
143:
144: int
145: man_endparse(struct man *m)
146: {
147:
1.3 kristaps 148: if (MAN_HALT & m->flags)
149: return(0);
150: else if (man_macroend(m))
151: return(1);
152: m->flags |= MAN_HALT;
153: return(0);
1.1 kristaps 154: }
155:
156:
157: int
158: man_parseln(struct man *m, int ln, char *buf)
159: {
160:
1.55 kristaps 161: return('.' == *buf || '\'' == *buf ?
1.1 kristaps 162: man_pmacro(m, ln, buf) :
163: man_ptext(m, ln, buf));
164: }
165:
166:
1.2 kristaps 167: static void
168: man_free1(struct man *man)
169: {
170:
171: if (man->first)
1.54 kristaps 172: man_node_delete(man, man->first);
1.2 kristaps 173: if (man->meta.title)
174: free(man->meta.title);
1.6 kristaps 175: if (man->meta.source)
176: free(man->meta.source);
1.2 kristaps 177: if (man->meta.vol)
178: free(man->meta.vol);
179: }
180:
181:
1.45 kristaps 182: static void
1.2 kristaps 183: man_alloc1(struct man *m)
184: {
185:
1.44 kristaps 186: memset(&m->meta, 0, sizeof(struct man_meta));
1.2 kristaps 187: m->flags = 0;
1.45 kristaps 188: m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2 kristaps 189: m->first = m->last;
190: m->last->type = MAN_ROOT;
1.54 kristaps 191: m->last->tok = MAN_MAX;
1.2 kristaps 192: m->next = MAN_NEXT_CHILD;
193: }
194:
195:
1.1 kristaps 196: static int
197: man_node_append(struct man *man, struct man_node *p)
198: {
199:
200: assert(man->last);
201: assert(man->first);
202: assert(MAN_ROOT != p->type);
203:
204: switch (man->next) {
205: case (MAN_NEXT_SIBLING):
206: man->last->next = p;
207: p->prev = man->last;
208: p->parent = man->last->parent;
209: break;
210: case (MAN_NEXT_CHILD):
211: man->last->child = p;
212: p->parent = man->last;
213: break;
214: default:
215: abort();
216: /* NOTREACHED */
217: }
1.22 kristaps 218:
1.54 kristaps 219: assert(p->parent);
1.22 kristaps 220: p->parent->nchild++;
1.1 kristaps 221:
1.29 kristaps 222: if ( ! man_valid_pre(man, p))
223: return(0);
224:
225: switch (p->type) {
226: case (MAN_HEAD):
227: assert(MAN_BLOCK == p->parent->type);
228: p->parent->head = p;
229: break;
230: case (MAN_BODY):
231: assert(MAN_BLOCK == p->parent->type);
232: p->parent->body = p;
233: break;
234: default:
235: break;
236: }
237:
1.2 kristaps 238: man->last = p;
239:
1.1 kristaps 240: switch (p->type) {
1.2 kristaps 241: case (MAN_TEXT):
242: if ( ! man_valid_post(man))
243: return(0);
244: if ( ! man_action_post(man))
245: return(0);
1.1 kristaps 246: break;
247: default:
248: break;
249: }
250:
251: return(1);
252: }
253:
254:
255: static struct man_node *
1.53 kristaps 256: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1 kristaps 257: {
258: struct man_node *p;
259:
1.45 kristaps 260: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 261: p->line = line;
262: p->pos = pos;
263: p->type = type;
1.16 kristaps 264: p->tok = tok;
1.1 kristaps 265: return(p);
266: }
267:
268:
269: int
1.53 kristaps 270: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1 kristaps 271: {
272: struct man_node *p;
273:
1.16 kristaps 274: p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30 kristaps 275: if ( ! man_node_append(m, p))
276: return(0);
277: m->next = MAN_NEXT_CHILD;
278: return(1);
1.1 kristaps 279: }
280:
281:
282: int
1.53 kristaps 283: man_head_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_HEAD, tok);
288: if ( ! man_node_append(m, p))
289: return(0);
290: m->next = MAN_NEXT_CHILD;
291: return(1);
292: }
293:
294:
295: int
1.53 kristaps 296: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 297: {
298: struct man_node *p;
299:
300: p = man_node_alloc(line, pos, MAN_BODY, tok);
301: if ( ! man_node_append(m, p))
302: return(0);
303: m->next = MAN_NEXT_CHILD;
304: return(1);
305: }
306:
307:
308: int
1.53 kristaps 309: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29 kristaps 310: {
311: struct man_node *p;
312:
313: p = man_node_alloc(line, pos, MAN_BLOCK, tok);
314: if ( ! man_node_append(m, p))
315: return(0);
316: m->next = MAN_NEXT_CHILD;
317: return(1);
318: }
319:
320:
1.31 kristaps 321: static int
322: pstring(struct man *m, int line, int pos,
323: const char *p, size_t len)
1.1 kristaps 324: {
1.31 kristaps 325: struct man_node *n;
326: size_t sv;
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);
1.31 kristaps 330: sv = strlcpy(n->string, p, len + 1);
331:
332: /* Prohibit truncation. */
333: assert(sv < len + 1);
334:
335: if ( ! man_node_append(m, n))
1.30 kristaps 336: return(0);
337: m->next = MAN_NEXT_SIBLING;
338: return(1);
1.1 kristaps 339: }
340:
341:
1.31 kristaps 342: int
343: man_word_alloc(struct man *m, int line, int pos, const char *word)
344: {
345:
346: return(pstring(m, line, pos, word, strlen(word)));
347: }
348:
349:
1.54 kristaps 350: /*
351: * Free all of the resources held by a node. This does NOT unlink a
352: * node from its context; for that, see man_node_unlink().
353: */
354: static void
1.1 kristaps 355: man_node_free(struct man_node *p)
356: {
357:
358: if (p->string)
359: free(p->string);
360: free(p);
361: }
362:
363:
364: void
1.54 kristaps 365: man_node_delete(struct man *m, struct man_node *p)
1.1 kristaps 366: {
367:
1.54 kristaps 368: while (p->child)
369: man_node_delete(m, p->child);
370:
371: man_node_unlink(m, p);
1.1 kristaps 372: man_node_free(p);
373: }
374:
375:
376: static int
377: man_ptext(struct man *m, int line, char *buf)
378: {
1.31 kristaps 379: int i, j;
1.49 kristaps 380: char sv;
1.60 ! kristaps 381:
! 382: /* Ignore bogus comments. */
! 383:
! 384: if ('\\' == buf[0] && '.' == buf[1] && '\"' == buf[2])
! 385: return(man_pwarn(m, line, 0, WBADCOMMENT));
1.31 kristaps 386:
1.35 kristaps 387: /* Literal free-form text whitespace is preserved. */
388:
389: if (MAN_LITERAL & m->flags) {
390: if ( ! man_word_alloc(m, line, 0, buf))
391: return(0);
392: goto descope;
393: }
394:
1.31 kristaps 395: /* First de-chunk and allocate words. */
396:
397: for (i = 0; ' ' == buf[i]; i++)
398: /* Skip leading whitespace. */ ;
1.48 kristaps 399:
1.49 kristaps 400: if ('\0' == buf[i]) {
401: /* Trailing whitespace? */
402: if (i && ' ' == buf[i - 1])
403: if ( ! man_pwarn(m, line, i - 1, WTSPACE))
404: return(0);
1.31 kristaps 405: if ( ! pstring(m, line, 0, &buf[i], 0))
406: return(0);
407: goto descope;
408: }
409:
410: for (j = i; buf[i]; i++) {
411: if (' ' != buf[i])
412: continue;
413:
414: /* Escaped whitespace. */
415: if (i && ' ' == buf[i] && '\\' == buf[i - 1])
416: continue;
1.1 kristaps 417:
1.49 kristaps 418: sv = buf[i];
419: buf[i++] = '\0';
420:
1.31 kristaps 421: if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
422: return(0);
1.29 kristaps 423:
1.49 kristaps 424: /* Trailing whitespace? Check at overwritten byte. */
425:
426: if (' ' == sv && '\0' == buf[i])
427: if ( ! man_pwarn(m, line, i - 1, WTSPACE))
428: return(0);
429:
1.31 kristaps 430: for ( ; ' ' == buf[i]; i++)
431: /* Skip trailing whitespace. */ ;
1.30 kristaps 432:
1.31 kristaps 433: j = i;
1.49 kristaps 434:
435: /* Trailing whitespace? */
436:
437: if (' ' == buf[i - 1] && '\0' == buf[i])
438: if ( ! man_pwarn(m, line, i - 1, WTSPACE))
439: return(0);
440:
441: if ('\0' == buf[i])
1.31 kristaps 442: break;
443: }
444:
445: if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
1.1 kristaps 446: return(0);
1.31 kristaps 447:
448: descope:
1.11 kristaps 449:
450: /*
1.29 kristaps 451: * Co-ordinate what happens with having a next-line scope open:
452: * first close out the element scope (if applicable), then close
453: * out the block scope (also if applicable).
1.11 kristaps 454: */
455:
1.29 kristaps 456: if (MAN_ELINE & m->flags) {
457: m->flags &= ~MAN_ELINE;
1.55 kristaps 458: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.29 kristaps 459: return(0);
460: }
461:
462: if ( ! (MAN_BLINE & m->flags))
1.11 kristaps 463: return(1);
1.29 kristaps 464: m->flags &= ~MAN_BLINE;
1.11 kristaps 465:
1.55 kristaps 466: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.11 kristaps 467: return(0);
1.29 kristaps 468: return(man_body_alloc(m, line, 0, m->last->tok));
1.1 kristaps 469: }
470:
471:
1.43 kristaps 472: static int
473: macrowarn(struct man *m, int ln, const char *buf)
474: {
475: if ( ! (MAN_IGN_MACRO & m->pflags))
476: return(man_verr(m, ln, 0,
477: "unknown macro: %s%s",
478: buf, strlen(buf) > 3 ? "..." : ""));
479: return(man_vwarn(m, ln, 0, "unknown macro: %s%s",
480: buf, strlen(buf) > 3 ? "..." : ""));
481: }
482:
483:
1.1 kristaps 484: int
485: man_pmacro(struct man *m, int ln, char *buf)
486: {
1.58 kristaps 487: int i, j, ppos;
1.53 kristaps 488: enum mant tok;
1.34 kristaps 489: char mac[5];
490: struct man_node *n;
1.1 kristaps 491:
492: /* Comments and empties are quickly ignored. */
493:
1.46 kristaps 494: if ('\0' == buf[1])
495: return(1);
1.1 kristaps 496:
1.9 kristaps 497: i = 1;
498:
1.56 kristaps 499: /*
500: * Skip whitespace between the control character and initial
501: * text. "Whitespace" is both spaces and tabs.
502: */
1.57 kristaps 503: if (' ' == buf[i] || '\t' == buf[i]) {
1.9 kristaps 504: i++;
1.56 kristaps 505: while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1 kristaps 506: i++;
1.48 kristaps 507: if ('\0' == buf[i])
1.11 kristaps 508: goto out;
1.1 kristaps 509: }
510:
1.10 kristaps 511: ppos = i;
512:
1.1 kristaps 513: /* Copy the first word into a nil-terminated buffer. */
514:
1.10 kristaps 515: for (j = 0; j < 4; j++, i++) {
1.48 kristaps 516: if ('\0' == (mac[j] = buf[i]))
1.1 kristaps 517: break;
1.10 kristaps 518: else if (' ' == buf[i])
1.1 kristaps 519: break;
1.38 kristaps 520:
521: /* Check for invalid characters. */
522:
523: if (isgraph((u_char)buf[i]))
524: continue;
525: return(man_perr(m, ln, i, WNPRINT));
1.1 kristaps 526: }
527:
1.46 kristaps 528: mac[j] = '\0';
1.1 kristaps 529:
1.9 kristaps 530: if (j == 4 || j < 1) {
1.7 kristaps 531: if ( ! (MAN_IGN_MACRO & m->pflags)) {
1.29 kristaps 532: (void)man_perr(m, ln, ppos, WMACROFORM);
1.7 kristaps 533: goto err;
534: }
1.29 kristaps 535: if ( ! man_pwarn(m, ln, ppos, WMACROFORM))
1.7 kristaps 536: goto err;
1.12 kristaps 537: return(1);
1.7 kristaps 538: }
1.1 kristaps 539:
1.53 kristaps 540: if (MAN_MAX == (tok = man_hash_find(mac))) {
1.43 kristaps 541: if ( ! macrowarn(m, ln, mac))
1.7 kristaps 542: goto err;
1.12 kristaps 543: return(1);
1.1 kristaps 544: }
545:
546: /* The macro is sane. Jump to the next word. */
547:
548: while (buf[i] && ' ' == buf[i])
549: i++;
550:
1.48 kristaps 551: /* Trailing whitespace? */
552:
553: if ('\0' == buf[i] && ' ' == buf[i - 1])
554: if ( ! man_pwarn(m, ln, i - 1, WTSPACE))
555: goto err;
556:
1.50 kristaps 557: /*
1.51 kristaps 558: * Remove prior ELINE macro, as it's being clobbering by a new
559: * macro. Note that NSCOPED macros do not close out ELINE
560: * macros---they don't print text---so we let those slip by.
1.59 kristaps 561: * NOTE: we don't allow roff blocks (NOCLOSE) to be embedded
562: * here because that would stipulate blocks as children of
563: * elements!
1.50 kristaps 564: */
1.34 kristaps 565:
1.53 kristaps 566: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51 kristaps 567: m->flags & MAN_ELINE) {
568: assert(MAN_TEXT != m->last->type);
569:
570: /*
571: * This occurs in the following construction:
572: * .B
573: * .br
574: * .B
575: * .br
576: * I hate man macros.
577: * Flat-out disallow this madness.
578: */
579: if (MAN_NSCOPED & man_macros[m->last->tok].flags)
580: return(man_perr(m, ln, ppos, WLNSCOPE));
581:
1.34 kristaps 582: n = m->last;
1.51 kristaps 583:
584: assert(n);
1.34 kristaps 585: assert(NULL == n->child);
1.37 kristaps 586: assert(0 == n->nchild);
1.51 kristaps 587:
1.34 kristaps 588: if ( ! man_nwarn(m, n, WLNSCOPE))
589: return(0);
590:
1.54 kristaps 591: man_node_delete(m, n);
1.34 kristaps 592: m->flags &= ~MAN_ELINE;
593: }
594:
1.59 kristaps 595: /*
596: * Save the fact that we're in the next-line for a block. In
597: * this way, embedded roff instructions can "remember" state
598: * when they exit.
599: */
600:
601: if (MAN_BLINE & m->flags)
602: m->flags |= MAN_BPLINE;
603:
604: /* Call to handler... */
1.1 kristaps 605:
1.53 kristaps 606: assert(man_macros[tok].fp);
607: if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1 kristaps 608: goto err;
609:
1.11 kristaps 610: out:
1.50 kristaps 611: /*
612: * We weren't in a block-line scope when entering the
613: * above-parsed macro, so return.
614: */
615:
1.58 kristaps 616: if ( ! (MAN_BPLINE & m->flags)) {
1.50 kristaps 617: m->flags &= ~MAN_ILINE;
1.29 kristaps 618: return(1);
1.50 kristaps 619: }
1.58 kristaps 620: m->flags &= ~MAN_BPLINE;
1.50 kristaps 621:
622: /*
623: * If we're in a block scope, then allow this macro to slip by
624: * without closing scope around it.
625: */
626:
627: if (MAN_ILINE & m->flags) {
628: m->flags &= ~MAN_ILINE;
629: return(1);
630: }
1.29 kristaps 631:
632: /*
633: * If we've opened a new next-line element scope, then return
634: * now, as the next line will close out the block scope.
635: */
636:
637: if (MAN_ELINE & m->flags)
638: return(1);
639:
640: /* Close out the block scope opened in the prior line. */
1.11 kristaps 641:
1.29 kristaps 642: assert(MAN_BLINE & m->flags);
643: m->flags &= ~MAN_BLINE;
1.11 kristaps 644:
1.55 kristaps 645: if ( ! man_unscope(m, m->last->parent, WERRMAX))
1.29 kristaps 646: return(0);
647: return(man_body_alloc(m, ln, 0, m->last->tok));
1.1 kristaps 648:
649: err: /* Error out. */
650:
1.2 kristaps 651: m->flags |= MAN_HALT;
1.1 kristaps 652: return(0);
653: }
1.3 kristaps 654:
1.4 kristaps 655:
656: int
657: man_verr(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_err)
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_err)(man->data, ln, pos, buf));
669: }
670:
671:
672: int
673: man_vwarn(struct man *man, int ln, int pos, const char *fmt, ...)
674: {
675: char buf[256];
676: va_list ap;
677:
678: if (NULL == man->cb.man_warn)
679: return(0);
680:
681: va_start(ap, fmt);
682: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
683: va_end(ap);
684: return((*man->cb.man_warn)(man->data, ln, pos, buf));
685: }
686:
687:
1.23 kristaps 688: int
1.27 kristaps 689: man_err(struct man *m, int line, int pos, int iserr, enum merr type)
1.23 kristaps 690: {
691: const char *p;
692:
1.27 kristaps 693: p = __man_merrnames[(int)type];
1.23 kristaps 694: assert(p);
695:
696: if (iserr)
697: return(man_verr(m, line, pos, p));
698:
699: return(man_vwarn(m, line, pos, p));
1.51 kristaps 700: }
701:
702:
1.54 kristaps 703: /*
704: * Unlink a node from its context. If "m" is provided, the last parse
705: * point will also be adjusted accordingly.
706: */
707: static void
1.51 kristaps 708: man_node_unlink(struct man *m, struct man_node *n)
709: {
710:
1.54 kristaps 711: /* Adjust siblings. */
712:
713: if (n->prev)
1.51 kristaps 714: n->prev->next = n->next;
1.54 kristaps 715: if (n->next)
716: n->next->prev = n->prev;
717:
718: /* Adjust parent. */
719:
720: if (n->parent) {
721: n->parent->nchild--;
722: if (n->parent->child == n)
723: n->parent->child = n->prev ? n->prev : n->next;
724: }
725:
726: /* Adjust parse point, if applicable. */
727:
728: if (m && m->last == n) {
729: /*XXX: this can occur when bailing from validation. */
730: /*assert(NULL == n->next);*/
731: if (n->prev) {
1.51 kristaps 732: m->last = n->prev;
733: m->next = MAN_NEXT_SIBLING;
1.54 kristaps 734: } else {
1.51 kristaps 735: m->last = n->parent;
736: m->next = MAN_NEXT_CHILD;
737: }
738: }
739:
1.54 kristaps 740: if (m && m->first == n)
741: m->first = NULL;
1.23 kristaps 742: }
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