Annotation of src/usr.bin/mandoc/man.c, Revision 1.85
1.85 ! schwarze 1: /* $Id: man.c,v 1.84 2014/08/08 15:32:17 schwarze Exp $ */
1.1 kristaps 2: /*
1.52 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.73 schwarze 4: * Copyright (c) 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
1.74 schwarze 5: * Copyright (c) 2011 Joerg Sonnenberger <joerg@netbsd.org>
1.1 kristaps 6: *
7: * Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 10: *
1.2 schwarze 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 18: */
1.14 schwarze 19: #include <sys/types.h>
20:
1.1 kristaps 21: #include <assert.h>
1.76 schwarze 22: #include <ctype.h>
1.1 kristaps 23: #include <stdarg.h>
24: #include <stdlib.h>
25: #include <stdio.h>
26: #include <string.h>
27:
1.59 schwarze 28: #include "man.h"
1.33 schwarze 29: #include "mandoc.h"
1.75 schwarze 30: #include "mandoc_aux.h"
1.1 kristaps 31: #include "libman.h"
1.16 schwarze 32: #include "libmandoc.h"
1.1 kristaps 33:
1.79 schwarze 34: const char *const __man_macronames[MAN_MAX] = {
1.3 schwarze 35: "br", "TH", "SH", "SS",
1.79 schwarze 36: "TP", "LP", "PP", "P",
1.1 kristaps 37: "IP", "HP", "SM", "SB",
38: "BI", "IB", "BR", "RB",
39: "R", "B", "I", "IR",
1.50 schwarze 40: "RI", "na", "sp", "nf",
41: "fi", "RE", "RS", "DT",
42: "UC", "PD", "AT", "in",
1.70 schwarze 43: "ft", "OP", "EX", "EE",
1.78 schwarze 44: "UR", "UE", "ll"
1.1 kristaps 45: };
46:
47: const char * const *man_macronames = __man_macronames;
48:
1.79 schwarze 49: static struct man_node *man_node_alloc(struct man *, int, int,
1.22 schwarze 50: enum man_type, enum mant);
1.79 schwarze 51: static int man_node_append(struct man *,
1.1 kristaps 52: struct man_node *);
1.22 schwarze 53: static void man_node_free(struct man_node *);
1.79 schwarze 54: static void man_node_unlink(struct man *,
1.22 schwarze 55: struct man_node *);
1.31 schwarze 56: static int man_ptext(struct man *, int, char *, int);
57: static int man_pmacro(struct man *, int, char *, int);
1.1 kristaps 58: static void man_free1(struct man *);
1.16 schwarze 59: static void man_alloc1(struct man *);
1.52 schwarze 60: static int man_descope(struct man *, int, int);
1.1 kristaps 61:
62:
63: const struct man_node *
1.69 schwarze 64: man_node(const struct man *man)
1.1 kristaps 65: {
66:
1.69 schwarze 67: return(man->first);
1.1 kristaps 68: }
69:
70: const struct man_meta *
1.69 schwarze 71: man_meta(const struct man *man)
1.1 kristaps 72: {
73:
1.69 schwarze 74: return(&man->meta);
1.1 kristaps 75: }
76:
1.16 schwarze 77: void
1.1 kristaps 78: man_reset(struct man *man)
79: {
80:
81: man_free1(man);
1.16 schwarze 82: man_alloc1(man);
1.1 kristaps 83: }
84:
85: void
86: man_free(struct man *man)
87: {
88:
89: man_free1(man);
90: free(man);
91: }
92:
93: struct man *
1.73 schwarze 94: man_alloc(struct roff *roff, struct mparse *parse, int quick)
1.1 kristaps 95: {
96: struct man *p;
97:
1.16 schwarze 98: p = mandoc_calloc(1, sizeof(struct man));
1.1 kristaps 99:
1.13 schwarze 100: man_hash_init();
1.59 schwarze 101: p->parse = parse;
1.73 schwarze 102: p->quick = quick;
1.60 schwarze 103: p->roff = roff;
1.16 schwarze 104:
105: man_alloc1(p);
1.1 kristaps 106: return(p);
107: }
108:
109: int
1.69 schwarze 110: man_endparse(struct man *man)
1.1 kristaps 111: {
112:
1.84 schwarze 113: return(man_macroend(man));
1.1 kristaps 114: }
115:
116: int
1.69 schwarze 117: man_parseln(struct man *man, int ln, char *buf, int offs)
1.1 kristaps 118: {
1.25 schwarze 119:
1.69 schwarze 120: man->flags |= MAN_NEWLINE;
1.54 schwarze 121:
1.69 schwarze 122: return (roff_getcontrol(man->roff, buf, &offs) ?
1.79 schwarze 123: man_pmacro(man, ln, buf, offs) :
124: man_ptext(man, ln, buf, offs));
1.1 kristaps 125: }
126:
127: static void
128: man_free1(struct man *man)
129: {
130:
131: if (man->first)
1.22 schwarze 132: man_node_delete(man, man->first);
1.1 kristaps 133: if (man->meta.title)
134: free(man->meta.title);
135: if (man->meta.source)
136: free(man->meta.source);
1.56 schwarze 137: if (man->meta.date)
138: free(man->meta.date);
1.1 kristaps 139: if (man->meta.vol)
140: free(man->meta.vol);
1.29 schwarze 141: if (man->meta.msec)
142: free(man->meta.msec);
1.1 kristaps 143: }
144:
1.16 schwarze 145: static void
1.69 schwarze 146: man_alloc1(struct man *man)
1.1 kristaps 147: {
148:
1.69 schwarze 149: memset(&man->meta, 0, sizeof(struct man_meta));
150: man->flags = 0;
151: man->last = mandoc_calloc(1, sizeof(struct man_node));
152: man->first = man->last;
153: man->last->type = MAN_ROOT;
154: man->last->tok = MAN_MAX;
155: man->next = MAN_NEXT_CHILD;
1.1 kristaps 156: }
157:
158:
159: static int
160: man_node_append(struct man *man, struct man_node *p)
161: {
162:
163: assert(man->last);
164: assert(man->first);
165: assert(MAN_ROOT != p->type);
166:
167: switch (man->next) {
1.79 schwarze 168: case MAN_NEXT_SIBLING:
1.1 kristaps 169: man->last->next = p;
170: p->prev = man->last;
171: p->parent = man->last->parent;
172: break;
1.79 schwarze 173: case MAN_NEXT_CHILD:
1.1 kristaps 174: man->last->child = p;
175: p->parent = man->last;
176: break;
177: default:
178: abort();
179: /* NOTREACHED */
180: }
1.79 schwarze 181:
1.22 schwarze 182: assert(p->parent);
1.5 schwarze 183: p->parent->nchild++;
1.1 kristaps 184:
1.9 schwarze 185: if ( ! man_valid_pre(man, p))
186: return(0);
187:
188: switch (p->type) {
1.79 schwarze 189: case MAN_HEAD:
1.9 schwarze 190: assert(MAN_BLOCK == p->parent->type);
191: p->parent->head = p;
192: break;
1.79 schwarze 193: case MAN_TAIL:
1.59 schwarze 194: assert(MAN_BLOCK == p->parent->type);
195: p->parent->tail = p;
196: break;
1.79 schwarze 197: case MAN_BODY:
1.9 schwarze 198: assert(MAN_BLOCK == p->parent->type);
199: p->parent->body = p;
200: break;
201: default:
202: break;
203: }
204:
1.1 kristaps 205: man->last = p;
206:
207: switch (p->type) {
1.79 schwarze 208: case MAN_TBL:
1.52 schwarze 209: /* FALLTHROUGH */
1.79 schwarze 210: case MAN_TEXT:
1.1 kristaps 211: if ( ! man_valid_post(man))
212: return(0);
213: break;
214: default:
215: break;
216: }
217:
218: return(1);
219: }
220:
221: static struct man_node *
1.79 schwarze 222: man_node_alloc(struct man *man, int line, int pos,
1.54 schwarze 223: enum man_type type, enum mant tok)
1.1 kristaps 224: {
225: struct man_node *p;
226:
1.16 schwarze 227: p = mandoc_calloc(1, sizeof(struct man_node));
1.1 kristaps 228: p->line = line;
229: p->pos = pos;
230: p->type = type;
231: p->tok = tok;
1.54 schwarze 232:
1.69 schwarze 233: if (MAN_NEWLINE & man->flags)
1.54 schwarze 234: p->flags |= MAN_LINE;
1.69 schwarze 235: man->flags &= ~MAN_NEWLINE;
1.1 kristaps 236: return(p);
237: }
238:
239: int
1.69 schwarze 240: man_elem_alloc(struct man *man, int line, int pos, enum mant tok)
1.1 kristaps 241: {
242: struct man_node *p;
243:
1.69 schwarze 244: p = man_node_alloc(man, line, pos, MAN_ELEM, tok);
245: if ( ! man_node_append(man, p))
1.10 schwarze 246: return(0);
1.69 schwarze 247: man->next = MAN_NEXT_CHILD;
1.10 schwarze 248: return(1);
1.1 kristaps 249: }
250:
251: int
1.69 schwarze 252: man_tail_alloc(struct man *man, int line, int pos, enum mant tok)
1.59 schwarze 253: {
254: struct man_node *p;
255:
1.69 schwarze 256: p = man_node_alloc(man, line, pos, MAN_TAIL, tok);
257: if ( ! man_node_append(man, p))
1.59 schwarze 258: return(0);
1.69 schwarze 259: man->next = MAN_NEXT_CHILD;
1.59 schwarze 260: return(1);
261: }
262:
263: int
1.69 schwarze 264: man_head_alloc(struct man *man, int line, int pos, enum mant tok)
1.9 schwarze 265: {
266: struct man_node *p;
267:
1.69 schwarze 268: p = man_node_alloc(man, line, pos, MAN_HEAD, tok);
269: if ( ! man_node_append(man, p))
1.9 schwarze 270: return(0);
1.69 schwarze 271: man->next = MAN_NEXT_CHILD;
1.9 schwarze 272: return(1);
273: }
274:
275: int
1.69 schwarze 276: man_body_alloc(struct man *man, int line, int pos, enum mant tok)
1.9 schwarze 277: {
278: struct man_node *p;
279:
1.69 schwarze 280: p = man_node_alloc(man, line, pos, MAN_BODY, tok);
281: if ( ! man_node_append(man, p))
1.9 schwarze 282: return(0);
1.69 schwarze 283: man->next = MAN_NEXT_CHILD;
1.9 schwarze 284: return(1);
285: }
286:
287: int
1.69 schwarze 288: man_block_alloc(struct man *man, int line, int pos, enum mant tok)
1.9 schwarze 289: {
290: struct man_node *p;
291:
1.69 schwarze 292: p = man_node_alloc(man, line, pos, MAN_BLOCK, tok);
293: if ( ! man_node_append(man, p))
1.9 schwarze 294: return(0);
1.69 schwarze 295: man->next = MAN_NEXT_CHILD;
1.9 schwarze 296: return(1);
297: }
298:
1.27 schwarze 299: int
1.69 schwarze 300: man_word_alloc(struct man *man, int line, int pos, const char *word)
1.1 kristaps 301: {
1.10 schwarze 302: struct man_node *n;
1.1 kristaps 303:
1.69 schwarze 304: n = man_node_alloc(man, line, pos, MAN_TEXT, MAN_MAX);
305: n->string = roff_strdup(man->roff, word);
1.10 schwarze 306:
1.69 schwarze 307: if ( ! man_node_append(man, n))
1.1 kristaps 308: return(0);
1.27 schwarze 309:
1.69 schwarze 310: man->next = MAN_NEXT_SIBLING;
1.10 schwarze 311: return(1);
312: }
313:
1.22 schwarze 314: /*
315: * Free all of the resources held by a node. This does NOT unlink a
316: * node from its context; for that, see man_node_unlink().
317: */
318: static void
1.1 kristaps 319: man_node_free(struct man_node *p)
320: {
321:
322: if (p->string)
323: free(p->string);
324: free(p);
325: }
326:
327: void
1.69 schwarze 328: man_node_delete(struct man *man, struct man_node *p)
1.1 kristaps 329: {
330:
1.22 schwarze 331: while (p->child)
1.69 schwarze 332: man_node_delete(man, p->child);
1.22 schwarze 333:
1.69 schwarze 334: man_node_unlink(man, p);
1.1 kristaps 335: man_node_free(p);
336: }
337:
1.57 schwarze 338: int
1.69 schwarze 339: man_addeqn(struct man *man, const struct eqn *ep)
1.57 schwarze 340: {
341: struct man_node *n;
342:
1.69 schwarze 343: n = man_node_alloc(man, ep->ln, ep->pos, MAN_EQN, MAN_MAX);
1.57 schwarze 344: n->eqn = ep;
345:
1.69 schwarze 346: if ( ! man_node_append(man, n))
1.57 schwarze 347: return(0);
348:
1.69 schwarze 349: man->next = MAN_NEXT_SIBLING;
350: return(man_descope(man, ep->ln, ep->pos));
1.57 schwarze 351: }
1.1 kristaps 352:
1.52 schwarze 353: int
1.69 schwarze 354: man_addspan(struct man *man, const struct tbl_span *sp)
1.52 schwarze 355: {
1.55 schwarze 356: struct man_node *n;
1.52 schwarze 357:
1.69 schwarze 358: n = man_node_alloc(man, sp->line, 0, MAN_TBL, MAN_MAX);
1.55 schwarze 359: n->span = sp;
360:
1.69 schwarze 361: if ( ! man_node_append(man, n))
1.52 schwarze 362: return(0);
1.55 schwarze 363:
1.69 schwarze 364: man->next = MAN_NEXT_SIBLING;
365: return(man_descope(man, sp->line, 0));
1.52 schwarze 366: }
367:
368: static int
1.69 schwarze 369: man_descope(struct man *man, int line, int offs)
1.52 schwarze 370: {
371: /*
372: * Co-ordinate what happens with having a next-line scope open:
373: * first close out the element scope (if applicable), then close
374: * out the block scope (also if applicable).
375: */
376:
1.69 schwarze 377: if (MAN_ELINE & man->flags) {
378: man->flags &= ~MAN_ELINE;
1.82 schwarze 379: if ( ! man_unscope(man, man->last->parent))
1.52 schwarze 380: return(0);
381: }
382:
1.69 schwarze 383: if ( ! (MAN_BLINE & man->flags))
1.52 schwarze 384: return(1);
1.69 schwarze 385: man->flags &= ~MAN_BLINE;
1.52 schwarze 386:
1.82 schwarze 387: if ( ! man_unscope(man, man->last->parent))
1.52 schwarze 388: return(0);
1.69 schwarze 389: return(man_body_alloc(man, line, offs, man->last->tok));
1.52 schwarze 390: }
391:
1.1 kristaps 392: static int
1.69 schwarze 393: man_ptext(struct man *man, int line, char *buf, int offs)
1.1 kristaps 394: {
1.27 schwarze 395: int i;
1.26 schwarze 396:
1.10 schwarze 397: /* Literal free-form text whitespace is preserved. */
398:
1.69 schwarze 399: if (MAN_LITERAL & man->flags) {
400: if ( ! man_word_alloc(man, line, offs, buf + offs))
1.10 schwarze 401: return(0);
1.69 schwarze 402: return(man_descope(man, line, offs));
1.10 schwarze 403: }
404:
1.31 schwarze 405: for (i = offs; ' ' == buf[i]; i++)
1.10 schwarze 406: /* Skip leading whitespace. */ ;
1.18 schwarze 407:
1.71 schwarze 408: /*
409: * Blank lines are ignored right after headings
410: * but add a single vertical space elsewhere.
411: */
412:
1.18 schwarze 413: if ('\0' == buf[i]) {
1.27 schwarze 414: /* Allocate a blank entry. */
1.71 schwarze 415: if (MAN_SH != man->last->tok &&
416: MAN_SS != man->last->tok) {
417: if ( ! man_elem_alloc(man, line, offs, MAN_sp))
418: return(0);
419: man->next = MAN_NEXT_SIBLING;
420: }
1.68 schwarze 421: return(1);
1.10 schwarze 422: }
1.1 kristaps 423:
1.79 schwarze 424: /*
1.27 schwarze 425: * Warn if the last un-escaped character is whitespace. Then
1.79 schwarze 426: * strip away the remaining spaces (tabs stay!).
1.27 schwarze 427: */
1.18 schwarze 428:
1.27 schwarze 429: i = (int)strlen(buf);
430: assert(i);
1.18 schwarze 431:
1.27 schwarze 432: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
433: if (i > 1 && '\\' != buf[i - 2])
1.81 schwarze 434: mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
435: line, i - 1, NULL);
1.18 schwarze 436:
1.27 schwarze 437: for (--i; i && ' ' == buf[i]; i--)
438: /* Spin back to non-space. */ ;
1.10 schwarze 439:
1.27 schwarze 440: /* Jump ahead of escaped whitespace. */
441: i += '\\' == buf[i] ? 2 : 1;
1.18 schwarze 442:
1.27 schwarze 443: buf[i] = '\0';
1.10 schwarze 444: }
1.9 schwarze 445:
1.69 schwarze 446: if ( ! man_word_alloc(man, line, offs, buf + offs))
1.1 kristaps 447: return(0);
1.28 schwarze 448:
449: /*
450: * End-of-sentence check. If the last character is an unescaped
451: * EOS character, then flag the node as being the end of a
452: * sentence. The front-end will know how to interpret this.
453: */
454:
455: assert(i);
1.72 schwarze 456: if (mandoc_eos(buf, (size_t)i))
1.69 schwarze 457: man->last->flags |= MAN_EOS;
1.10 schwarze 458:
1.69 schwarze 459: return(man_descope(man, line, offs));
1.1 kristaps 460: }
461:
1.53 schwarze 462: static int
1.69 schwarze 463: man_pmacro(struct man *man, int ln, char *buf, int offs)
1.1 kristaps 464: {
1.10 schwarze 465: char mac[5];
466: struct man_node *n;
1.84 schwarze 467: enum mant tok;
468: int i, ppos;
469: int bline;
1.1 kristaps 470:
1.59 schwarze 471: if ('"' == buf[offs]) {
1.81 schwarze 472: mandoc_msg(MANDOCERR_COMMENT_BAD, man->parse,
473: ln, offs, NULL);
1.59 schwarze 474: return(1);
475: } else if ('\0' == buf[offs])
1.17 schwarze 476: return(1);
1.1 kristaps 477:
1.59 schwarze 478: ppos = offs;
1.1 kristaps 479:
1.23 schwarze 480: /*
1.59 schwarze 481: * Copy the first word into a nil-terminated buffer.
482: * Stop copying when a tab, space, or eoln is encountered.
1.23 schwarze 483: */
1.27 schwarze 484:
1.59 schwarze 485: i = 0;
1.79 schwarze 486: while (i < 4 && '\0' != buf[offs] && ' ' != buf[offs] &&
487: '\t' != buf[offs])
1.59 schwarze 488: mac[i++] = buf[offs++];
1.1 kristaps 489:
1.59 schwarze 490: mac[i] = '\0';
1.1 kristaps 491:
1.59 schwarze 492: tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
1.1 kristaps 493:
1.40 schwarze 494: if (MAN_MAX == tok) {
1.85 ! schwarze 495: mandoc_msg(MANDOCERR_MACRO, man->parse,
! 496: ln, ppos, buf + ppos - 1);
1.1 kristaps 497: return(1);
498: }
499:
500: /* The macro is sane. Jump to the next word. */
501:
1.59 schwarze 502: while (buf[offs] && ' ' == buf[offs])
503: offs++;
1.18 schwarze 504:
1.79 schwarze 505: /*
1.27 schwarze 506: * Trailing whitespace. Note that tabs are allowed to be passed
507: * into the parser as "text", so we only warn about spaces here.
508: */
1.18 schwarze 509:
1.59 schwarze 510: if ('\0' == buf[offs] && ' ' == buf[offs - 1])
1.81 schwarze 511: mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
512: ln, offs - 1, NULL);
1.1 kristaps 513:
1.79 schwarze 514: /*
1.46 schwarze 515: * Remove prior ELINE macro, as it's being clobbered by a new
1.21 schwarze 516: * macro. Note that NSCOPED macros do not close out ELINE
517: * macros---they don't print text---so we let those slip by.
518: */
519:
1.22 schwarze 520: if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.69 schwarze 521: man->flags & MAN_ELINE) {
522: n = man->last;
1.46 schwarze 523: assert(MAN_TEXT != n->type);
1.21 schwarze 524:
1.49 schwarze 525: /* Remove repeated NSCOPED macros causing ELINE. */
526:
1.46 schwarze 527: if (MAN_NSCOPED & man_macros[n->tok].flags)
528: n = n->parent;
1.21 schwarze 529:
1.83 schwarze 530: mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse, n->line,
1.63 schwarze 531: n->pos, "%s breaks %s", man_macronames[tok],
532: man_macronames[n->tok]);
1.10 schwarze 533:
1.69 schwarze 534: man_node_delete(man, n);
535: man->flags &= ~MAN_ELINE;
1.63 schwarze 536: }
537:
538: /*
539: * Remove prior BLINE macro that is being clobbered.
540: */
1.69 schwarze 541: if ((man->flags & MAN_BLINE) &&
1.63 schwarze 542: (MAN_BSCOPE & man_macros[tok].flags)) {
1.69 schwarze 543: n = man->last;
1.64 schwarze 544:
545: /* Might be a text node like 8 in
546: * .TP 8
547: * .SH foo
548: */
549: if (MAN_TEXT == n->type)
550: n = n->parent;
1.63 schwarze 551:
552: /* Remove element that didn't end BLINE, if any. */
553: if ( ! (MAN_BSCOPE & man_macros[n->tok].flags))
554: n = n->parent;
555:
556: assert(MAN_HEAD == n->type);
557: n = n->parent;
558: assert(MAN_BLOCK == n->type);
559: assert(MAN_SCOPED & man_macros[n->tok].flags);
560:
1.83 schwarze 561: mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse, n->line,
1.63 schwarze 562: n->pos, "%s breaks %s", man_macronames[tok],
563: man_macronames[n->tok]);
564:
1.69 schwarze 565: man_node_delete(man, n);
566: man->flags &= ~MAN_BLINE;
1.10 schwarze 567: }
568:
1.84 schwarze 569: /* Remember whether we are in next-line scope for a block head. */
1.24 schwarze 570:
1.84 schwarze 571: bline = man->flags & MAN_BLINE;
1.24 schwarze 572:
573: /* Call to handler... */
1.1 kristaps 574:
1.22 schwarze 575: assert(man_macros[tok].fp);
1.69 schwarze 576: if ( ! (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf))
1.84 schwarze 577: return(0);
1.73 schwarze 578:
579: /* In quick mode (for mandocdb), abort after the NAME section. */
580:
1.80 schwarze 581: if (man->quick && MAN_SH == tok) {
582: n = man->last;
583: if (MAN_BODY == n->type &&
584: strcmp(n->prev->child->string, "NAME"))
585: return(2);
586: }
1.1 kristaps 587:
1.79 schwarze 588: /*
1.84 schwarze 589: * If we are in a next-line scope for a block head,
590: * close it out now and switch to the body,
591: * unless the next-line scope is allowed to continue.
1.21 schwarze 592: */
593:
1.84 schwarze 594: if ( ! bline || man->flags & MAN_ELINE ||
595: man_macros[tok].flags & MAN_NSCOPED)
1.21 schwarze 596: return(1);
1.1 kristaps 597:
1.69 schwarze 598: assert(MAN_BLINE & man->flags);
599: man->flags &= ~MAN_BLINE;
1.1 kristaps 600:
1.82 schwarze 601: if ( ! man_unscope(man, man->last->parent))
1.9 schwarze 602: return(0);
1.69 schwarze 603: return(man_body_alloc(man, ln, ppos, man->last->tok));
1.1 kristaps 604: }
1.21 schwarze 605:
1.22 schwarze 606: /*
1.69 schwarze 607: * Unlink a node from its context. If "man" is provided, the last parse
1.22 schwarze 608: * point will also be adjusted accordingly.
609: */
610: static void
1.69 schwarze 611: man_node_unlink(struct man *man, struct man_node *n)
1.21 schwarze 612: {
613:
1.22 schwarze 614: /* Adjust siblings. */
615:
616: if (n->prev)
1.21 schwarze 617: n->prev->next = n->next;
1.22 schwarze 618: if (n->next)
619: n->next->prev = n->prev;
620:
621: /* Adjust parent. */
622:
623: if (n->parent) {
624: n->parent->nchild--;
625: if (n->parent->child == n)
626: n->parent->child = n->prev ? n->prev : n->next;
627: }
628:
629: /* Adjust parse point, if applicable. */
630:
1.69 schwarze 631: if (man && man->last == n) {
1.22 schwarze 632: /*XXX: this can occur when bailing from validation. */
633: /*assert(NULL == n->next);*/
634: if (n->prev) {
1.69 schwarze 635: man->last = n->prev;
636: man->next = MAN_NEXT_SIBLING;
1.22 schwarze 637: } else {
1.69 schwarze 638: man->last = n->parent;
639: man->next = MAN_NEXT_CHILD;
1.21 schwarze 640: }
641: }
642:
1.69 schwarze 643: if (man && man->first == n)
644: man->first = NULL;
1.62 schwarze 645: }
646:
647: const struct mparse *
1.69 schwarze 648: man_mparse(const struct man *man)
1.62 schwarze 649: {
650:
1.69 schwarze 651: assert(man && man->parse);
652: return(man->parse);
1.76 schwarze 653: }
654:
655: void
656: man_deroff(char **dest, const struct man_node *n)
657: {
658: char *cp;
659: size_t sz;
660:
661: if (MAN_TEXT != n->type) {
662: for (n = n->child; n; n = n->next)
663: man_deroff(dest, n);
664: return;
665: }
666:
1.77 schwarze 667: /* Skip leading whitespace and escape sequences. */
1.76 schwarze 668:
1.77 schwarze 669: cp = n->string;
670: while ('\0' != *cp) {
671: if ('\\' == *cp) {
672: cp++;
673: mandoc_escape((const char **)&cp, NULL, NULL);
674: } else if (isspace((unsigned char)*cp))
675: cp++;
676: else
1.76 schwarze 677: break;
1.77 schwarze 678: }
1.76 schwarze 679:
680: /* Skip trailing whitespace. */
681:
682: for (sz = strlen(cp); sz; sz--)
683: if (0 == isspace((unsigned char)cp[sz-1]))
684: break;
685:
686: /* Skip empty strings. */
687:
688: if (0 == sz)
689: return;
690:
691: if (NULL == *dest) {
692: *dest = mandoc_strndup(cp, sz);
693: return;
694: }
695:
696: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
697: free(*dest);
698: *dest = cp;
1.4 schwarze 699: }
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