Annotation of mandoc/man.c, Revision 1.157
1.157 ! schwarze 1: /* $Id: man.c,v 1.156 2015/04/18 17:28:36 schwarze Exp $ */
1.1 kristaps 2: /*
1.102 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.149 schwarze 4: * Copyright (c) 2013, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
1.124 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
1.18 kristaps 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: *
1.150 schwarze 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.18 kristaps 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.150 schwarze 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.18 kristaps 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: */
1.47 kristaps 19: #include "config.h"
20:
1.41 kristaps 21: #include <sys/types.h>
22:
1.1 kristaps 23: #include <assert.h>
1.126 schwarze 24: #include <ctype.h>
1.1 kristaps 25: #include <stdarg.h>
26: #include <stdlib.h>
27: #include <stdio.h>
28: #include <string.h>
29:
1.150 schwarze 30: #include "mandoc_aux.h"
31: #include "mandoc.h"
32: #include "roff.h"
1.105 kristaps 33: #include "man.h"
1.150 schwarze 34: #include "libmandoc.h"
1.1 kristaps 35: #include "libman.h"
36:
1.129 schwarze 37: const char *const __man_macronames[MAN_MAX] = {
1.21 kristaps 38: "br", "TH", "SH", "SS",
1.129 schwarze 39: "TP", "LP", "PP", "P",
1.1 kristaps 40: "IP", "HP", "SM", "SB",
41: "BI", "IB", "BR", "RB",
1.11 kristaps 42: "R", "B", "I", "IR",
1.148 schwarze 43: "RI", "sp", "nf",
1.92 kristaps 44: "fi", "RE", "RS", "DT",
45: "UC", "PD", "AT", "in",
1.120 schwarze 46: "ft", "OP", "EX", "EE",
1.128 schwarze 47: "UR", "UE", "ll"
1.1 kristaps 48: };
49:
50: const char * const *man_macronames = __man_macronames;
51:
1.153 schwarze 52: static void man_breakscope(struct roff_man *, int);
53: static void man_descope(struct roff_man *, int, int);
54: static struct roff_node *man_node_alloc(struct roff_man *, int, int,
1.151 schwarze 55: enum roff_type, int);
1.153 schwarze 56: static void man_node_append(struct roff_man *,
57: struct roff_node *);
1.151 schwarze 58: static void man_node_free(struct roff_node *);
1.153 schwarze 59: static void man_node_unlink(struct roff_man *,
60: struct roff_node *);
61: static int man_ptext(struct roff_man *, int, char *, int);
62: static int man_pmacro(struct roff_man *, int, char *, int);
1.1 kristaps 63:
64:
1.45 kristaps 65: void
1.153 schwarze 66: man_endparse(struct roff_man *man)
1.1 kristaps 67: {
68:
1.144 schwarze 69: man_macroend(man);
1.1 kristaps 70: }
71:
72: int
1.153 schwarze 73: man_parseln(struct roff_man *man, int ln, char *buf, int offs)
1.1 kristaps 74: {
75:
1.150 schwarze 76: if (man->last->type != ROFFT_EQN || ln > man->last->line)
1.141 schwarze 77: man->flags |= MAN_NEWLINE;
1.97 kristaps 78:
1.119 schwarze 79: return (roff_getcontrol(man->roff, buf, &offs) ?
1.129 schwarze 80: man_pmacro(man, ln, buf, offs) :
81: man_ptext(man, ln, buf, offs));
1.1 kristaps 82: }
1.2 kristaps 83:
1.144 schwarze 84: static void
1.153 schwarze 85: man_node_append(struct roff_man *man, struct roff_node *p)
1.1 kristaps 86: {
87:
88: assert(man->last);
89: assert(man->first);
1.150 schwarze 90: assert(p->type != ROFFT_ROOT);
1.1 kristaps 91:
92: switch (man->next) {
1.153 schwarze 93: case ROFF_NEXT_SIBLING:
1.1 kristaps 94: man->last->next = p;
95: p->prev = man->last;
96: p->parent = man->last->parent;
97: break;
1.153 schwarze 98: case ROFF_NEXT_CHILD:
1.1 kristaps 99: man->last->child = p;
100: p->parent = man->last;
101: break;
102: default:
103: abort();
104: /* NOTREACHED */
105: }
1.129 schwarze 106:
1.54 kristaps 107: assert(p->parent);
1.22 kristaps 108: p->parent->nchild++;
1.1 kristaps 109:
1.29 kristaps 110: switch (p->type) {
1.150 schwarze 111: case ROFFT_BLOCK:
1.137 schwarze 112: if (p->tok == MAN_SH || p->tok == MAN_SS)
113: man->flags &= ~MAN_LITERAL;
114: break;
1.150 schwarze 115: case ROFFT_HEAD:
116: assert(p->parent->type == ROFFT_BLOCK);
1.29 kristaps 117: p->parent->head = p;
118: break;
1.150 schwarze 119: case ROFFT_BODY:
120: assert(p->parent->type == ROFFT_BLOCK);
1.29 kristaps 121: p->parent->body = p;
122: break;
123: default:
124: break;
125: }
126:
1.2 kristaps 127: man->last = p;
128:
1.1 kristaps 129: switch (p->type) {
1.150 schwarze 130: case ROFFT_TBL:
1.94 kristaps 131: /* FALLTHROUGH */
1.150 schwarze 132: case ROFFT_TEXT:
1.144 schwarze 133: man_valid_post(man);
1.1 kristaps 134: break;
135: default:
136: break;
137: }
138: }
139:
1.151 schwarze 140: static struct roff_node *
1.153 schwarze 141: man_node_alloc(struct roff_man *man, int line, int pos,
1.151 schwarze 142: enum roff_type type, int tok)
1.1 kristaps 143: {
1.151 schwarze 144: struct roff_node *p;
1.1 kristaps 145:
1.151 schwarze 146: p = mandoc_calloc(1, sizeof(*p));
1.1 kristaps 147: p->line = line;
148: p->pos = pos;
149: p->type = type;
1.16 kristaps 150: p->tok = tok;
1.97 kristaps 151:
1.144 schwarze 152: if (man->flags & MAN_NEWLINE)
1.97 kristaps 153: p->flags |= MAN_LINE;
1.119 schwarze 154: man->flags &= ~MAN_NEWLINE;
1.1 kristaps 155: return(p);
156: }
157:
1.144 schwarze 158: void
1.153 schwarze 159: man_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1.1 kristaps 160: {
1.151 schwarze 161: struct roff_node *p;
1.1 kristaps 162:
1.150 schwarze 163: p = man_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1.144 schwarze 164: man_node_append(man, p);
1.153 schwarze 165: man->next = ROFF_NEXT_CHILD;
1.106 kristaps 166: }
167:
1.144 schwarze 168: void
1.153 schwarze 169: man_head_alloc(struct roff_man *man, int line, int pos, int tok)
1.29 kristaps 170: {
1.151 schwarze 171: struct roff_node *p;
1.29 kristaps 172:
1.150 schwarze 173: p = man_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1.144 schwarze 174: man_node_append(man, p);
1.153 schwarze 175: man->next = ROFF_NEXT_CHILD;
1.29 kristaps 176: }
177:
1.144 schwarze 178: void
1.153 schwarze 179: man_body_alloc(struct roff_man *man, int line, int pos, int tok)
1.29 kristaps 180: {
1.151 schwarze 181: struct roff_node *p;
1.29 kristaps 182:
1.150 schwarze 183: p = man_node_alloc(man, line, pos, ROFFT_BODY, tok);
1.144 schwarze 184: man_node_append(man, p);
1.153 schwarze 185: man->next = ROFF_NEXT_CHILD;
1.29 kristaps 186: }
187:
1.144 schwarze 188: void
1.153 schwarze 189: man_block_alloc(struct roff_man *man, int line, int pos, int tok)
1.29 kristaps 190: {
1.151 schwarze 191: struct roff_node *p;
1.29 kristaps 192:
1.150 schwarze 193: p = man_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1.144 schwarze 194: man_node_append(man, p);
1.153 schwarze 195: man->next = ROFF_NEXT_CHILD;
1.29 kristaps 196: }
197:
1.144 schwarze 198: void
1.153 schwarze 199: man_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1.1 kristaps 200: {
1.151 schwarze 201: struct roff_node *n;
1.1 kristaps 202:
1.150 schwarze 203: n = man_node_alloc(man, line, pos, ROFFT_TEXT, MAN_MAX);
1.119 schwarze 204: n->string = roff_strdup(man->roff, word);
1.144 schwarze 205: man_node_append(man, n);
1.153 schwarze 206: man->next = ROFF_NEXT_SIBLING;
1.142 schwarze 207: }
208:
209: void
1.153 schwarze 210: man_word_append(struct roff_man *man, const char *word)
1.142 schwarze 211: {
1.151 schwarze 212: struct roff_node *n;
1.142 schwarze 213: char *addstr, *newstr;
214:
215: n = man->last;
216: addstr = roff_strdup(man->roff, word);
217: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
218: free(addstr);
219: free(n->string);
220: n->string = newstr;
1.153 schwarze 221: man->next = ROFF_NEXT_SIBLING;
1.1 kristaps 222: }
223:
1.54 kristaps 224: /*
225: * Free all of the resources held by a node. This does NOT unlink a
226: * node from its context; for that, see man_node_unlink().
227: */
228: static void
1.151 schwarze 229: man_node_free(struct roff_node *p)
1.1 kristaps 230: {
231:
1.144 schwarze 232: free(p->string);
1.1 kristaps 233: free(p);
234: }
235:
236: void
1.153 schwarze 237: man_node_delete(struct roff_man *man, struct roff_node *p)
1.1 kristaps 238: {
239:
1.54 kristaps 240: while (p->child)
1.119 schwarze 241: man_node_delete(man, p->child);
1.54 kristaps 242:
1.119 schwarze 243: man_node_unlink(man, p);
1.1 kristaps 244: man_node_free(p);
245: }
246:
1.145 schwarze 247: void
1.153 schwarze 248: man_addeqn(struct roff_man *man, const struct eqn *ep)
1.101 kristaps 249: {
1.151 schwarze 250: struct roff_node *n;
1.101 kristaps 251:
1.150 schwarze 252: n = man_node_alloc(man, ep->ln, ep->pos, ROFFT_EQN, MAN_MAX);
1.101 kristaps 253: n->eqn = ep;
1.140 schwarze 254: if (ep->ln > man->last->line)
255: n->flags |= MAN_LINE;
1.144 schwarze 256: man_node_append(man, n);
1.153 schwarze 257: man->next = ROFF_NEXT_SIBLING;
1.144 schwarze 258: man_descope(man, ep->ln, ep->pos);
1.101 kristaps 259: }
1.1 kristaps 260:
1.145 schwarze 261: void
1.153 schwarze 262: man_addspan(struct roff_man *man, const struct tbl_span *sp)
1.94 kristaps 263: {
1.151 schwarze 264: struct roff_node *n;
1.94 kristaps 265:
1.149 schwarze 266: man_breakscope(man, MAN_MAX);
1.150 schwarze 267: n = man_node_alloc(man, sp->line, 0, ROFFT_TBL, MAN_MAX);
1.100 kristaps 268: n->span = sp;
1.144 schwarze 269: man_node_append(man, n);
1.153 schwarze 270: man->next = ROFF_NEXT_SIBLING;
1.144 schwarze 271: man_descope(man, sp->line, 0);
1.94 kristaps 272: }
273:
1.144 schwarze 274: static void
1.153 schwarze 275: man_descope(struct roff_man *man, int line, int offs)
1.94 kristaps 276: {
277: /*
278: * Co-ordinate what happens with having a next-line scope open:
279: * first close out the element scope (if applicable), then close
280: * out the block scope (also if applicable).
281: */
282:
1.144 schwarze 283: if (man->flags & MAN_ELINE) {
1.119 schwarze 284: man->flags &= ~MAN_ELINE;
1.144 schwarze 285: man_unscope(man, man->last->parent);
1.94 kristaps 286: }
1.144 schwarze 287: if ( ! (man->flags & MAN_BLINE))
288: return;
1.119 schwarze 289: man->flags &= ~MAN_BLINE;
1.144 schwarze 290: man_unscope(man, man->last->parent);
291: man_body_alloc(man, line, offs, man->last->tok);
1.94 kristaps 292: }
293:
1.1 kristaps 294: static int
1.153 schwarze 295: man_ptext(struct roff_man *man, int line, char *buf, int offs)
1.1 kristaps 296: {
1.61 kristaps 297: int i;
1.60 kristaps 298:
1.35 kristaps 299: /* Literal free-form text whitespace is preserved. */
300:
1.144 schwarze 301: if (man->flags & MAN_LITERAL) {
302: man_word_alloc(man, line, offs, buf + offs);
303: man_descope(man, line, offs);
304: return(1);
1.35 kristaps 305: }
306:
1.144 schwarze 307: for (i = offs; buf[i] == ' '; i++)
1.31 kristaps 308: /* Skip leading whitespace. */ ;
1.48 kristaps 309:
1.121 schwarze 310: /*
311: * Blank lines are ignored right after headings
312: * but add a single vertical space elsewhere.
313: */
314:
1.144 schwarze 315: if (buf[i] == '\0') {
1.61 kristaps 316: /* Allocate a blank entry. */
1.144 schwarze 317: if (man->last->tok != MAN_SH &&
318: man->last->tok != MAN_SS) {
319: man_elem_alloc(man, line, offs, MAN_sp);
1.153 schwarze 320: man->next = ROFF_NEXT_SIBLING;
1.121 schwarze 321: }
1.118 schwarze 322: return(1);
1.31 kristaps 323: }
324:
1.129 schwarze 325: /*
1.63 kristaps 326: * Warn if the last un-escaped character is whitespace. Then
1.129 schwarze 327: * strip away the remaining spaces (tabs stay!).
1.63 kristaps 328: */
1.29 kristaps 329:
1.61 kristaps 330: i = (int)strlen(buf);
331: assert(i);
1.49 kristaps 332:
1.63 kristaps 333: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64 kristaps 334: if (i > 1 && '\\' != buf[i - 2])
1.131 schwarze 335: mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
336: line, i - 1, NULL);
1.63 kristaps 337:
338: for (--i; i && ' ' == buf[i]; i--)
339: /* Spin back to non-space. */ ;
340:
341: /* Jump ahead of escaped whitespace. */
342: i += '\\' == buf[i] ? 2 : 1;
343:
344: buf[i] = '\0';
345: }
1.144 schwarze 346: man_word_alloc(man, line, offs, buf + offs);
1.65 kristaps 347:
348: /*
349: * End-of-sentence check. If the last character is an unescaped
350: * EOS character, then flag the node as being the end of a
351: * sentence. The front-end will know how to interpret this.
352: */
1.67 kristaps 353:
1.65 kristaps 354: assert(i);
1.122 schwarze 355: if (mandoc_eos(buf, (size_t)i))
1.119 schwarze 356: man->last->flags |= MAN_EOS;
1.31 kristaps 357:
1.144 schwarze 358: man_descope(man, line, offs);
359: return(1);
1.1 kristaps 360: }
361:
1.96 kristaps 362: static int
1.153 schwarze 363: man_pmacro(struct roff_man *man, int ln, char *buf, int offs)
1.1 kristaps 364: {
1.151 schwarze 365: struct roff_node *n;
1.143 schwarze 366: const char *cp;
1.151 schwarze 367: int tok;
1.134 schwarze 368: int i, ppos;
369: int bline;
1.143 schwarze 370: char mac[5];
1.1 kristaps 371:
1.107 kristaps 372: ppos = offs;
1.9 kristaps 373:
1.56 kristaps 374: /*
1.107 kristaps 375: * Copy the first word into a nil-terminated buffer.
1.143 schwarze 376: * Stop when a space, tab, escape, or eoln is encountered.
1.56 kristaps 377: */
1.62 kristaps 378:
1.107 kristaps 379: i = 0;
1.143 schwarze 380: while (i < 4 && strchr(" \t\\", buf[offs]) == NULL)
1.107 kristaps 381: mac[i++] = buf[offs++];
1.10 kristaps 382:
1.107 kristaps 383: mac[i] = '\0';
1.1 kristaps 384:
1.107 kristaps 385: tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
1.1 kristaps 386:
1.143 schwarze 387: if (tok == MAN_MAX) {
1.136 schwarze 388: mandoc_msg(MANDOCERR_MACRO, man->parse,
389: ln, ppos, buf + ppos - 1);
1.12 kristaps 390: return(1);
1.1 kristaps 391: }
392:
1.143 schwarze 393: /* Skip a leading escape sequence or tab. */
394:
395: switch (buf[offs]) {
396: case '\\':
397: cp = buf + offs + 1;
398: mandoc_escape(&cp, NULL, NULL);
399: offs = cp - buf;
400: break;
401: case '\t':
402: offs++;
403: break;
404: default:
405: break;
406: }
407:
408: /* Jump to the next non-whitespace word. */
1.1 kristaps 409:
1.144 schwarze 410: while (buf[offs] && buf[offs] == ' ')
1.107 kristaps 411: offs++;
1.1 kristaps 412:
1.129 schwarze 413: /*
1.62 kristaps 414: * Trailing whitespace. Note that tabs are allowed to be passed
415: * into the parser as "text", so we only warn about spaces here.
416: */
1.48 kristaps 417:
1.144 schwarze 418: if (buf[offs] == '\0' && buf[offs - 1] == ' ')
1.131 schwarze 419: mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
420: ln, offs - 1, NULL);
1.48 kristaps 421:
1.129 schwarze 422: /*
1.149 schwarze 423: * Some macros break next-line scopes; otherwise, remember
424: * whether we are in next-line scope for a block head.
1.50 kristaps 425: */
1.34 kristaps 426:
1.149 schwarze 427: man_breakscope(man, tok);
1.134 schwarze 428: bline = man->flags & MAN_BLINE;
1.59 kristaps 429:
430: /* Call to handler... */
1.1 kristaps 431:
1.53 kristaps 432: assert(man_macros[tok].fp);
1.144 schwarze 433: (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf);
1.123 schwarze 434:
435: /* In quick mode (for mandocdb), abort after the NAME section. */
436:
1.144 schwarze 437: if (man->quick && tok == MAN_SH) {
1.130 schwarze 438: n = man->last;
1.150 schwarze 439: if (n->type == ROFFT_BODY &&
1.130 schwarze 440: strcmp(n->prev->child->string, "NAME"))
441: return(2);
442: }
1.1 kristaps 443:
1.129 schwarze 444: /*
1.135 schwarze 445: * If we are in a next-line scope for a block head,
446: * close it out now and switch to the body,
447: * unless the next-line scope is allowed to continue.
1.29 kristaps 448: */
449:
1.135 schwarze 450: if ( ! bline || man->flags & MAN_ELINE ||
451: man_macros[tok].flags & MAN_NSCOPED)
1.29 kristaps 452: return(1);
453:
1.144 schwarze 454: assert(man->flags & MAN_BLINE);
1.119 schwarze 455: man->flags &= ~MAN_BLINE;
1.11 kristaps 456:
1.144 schwarze 457: man_unscope(man, man->last->parent);
458: man_body_alloc(man, ln, ppos, man->last->tok);
459: return(1);
1.149 schwarze 460: }
461:
462: void
1.153 schwarze 463: man_breakscope(struct roff_man *man, int tok)
1.149 schwarze 464: {
1.151 schwarze 465: struct roff_node *n;
1.149 schwarze 466:
467: /*
468: * An element next line scope is open,
469: * and the new macro is not allowed inside elements.
470: * Delete the element that is being broken.
471: */
472:
473: if (man->flags & MAN_ELINE && (tok == MAN_MAX ||
474: ! (man_macros[tok].flags & MAN_NSCOPED))) {
475: n = man->last;
1.150 schwarze 476: assert(n->type != ROFFT_TEXT);
1.149 schwarze 477: if (man_macros[n->tok].flags & MAN_NSCOPED)
478: n = n->parent;
479:
480: mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
481: n->line, n->pos, "%s breaks %s",
482: tok == MAN_MAX ? "TS" : man_macronames[tok],
483: man_macronames[n->tok]);
484:
485: man_node_delete(man, n);
486: man->flags &= ~MAN_ELINE;
487: }
488:
489: /*
490: * A block header next line scope is open,
491: * and the new macro is not allowed inside block headers.
492: * Delete the block that is being broken.
493: */
494:
495: if (man->flags & MAN_BLINE && (tok == MAN_MAX ||
496: man_macros[tok].flags & MAN_BSCOPE)) {
497: n = man->last;
1.150 schwarze 498: if (n->type == ROFFT_TEXT)
1.149 schwarze 499: n = n->parent;
500: if ( ! (man_macros[n->tok].flags & MAN_BSCOPE))
501: n = n->parent;
502:
1.150 schwarze 503: assert(n->type == ROFFT_HEAD);
1.149 schwarze 504: n = n->parent;
1.150 schwarze 505: assert(n->type == ROFFT_BLOCK);
1.149 schwarze 506: assert(man_macros[n->tok].flags & MAN_SCOPED);
507:
508: mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
509: n->line, n->pos, "%s breaks %s",
510: tok == MAN_MAX ? "TS" : man_macronames[tok],
511: man_macronames[n->tok]);
512:
513: man_node_delete(man, n);
514: man->flags &= ~MAN_BLINE;
515: }
1.1 kristaps 516: }
1.51 kristaps 517:
1.54 kristaps 518: /*
1.119 schwarze 519: * Unlink a node from its context. If "man" is provided, the last parse
1.54 kristaps 520: * point will also be adjusted accordingly.
521: */
522: static void
1.153 schwarze 523: man_node_unlink(struct roff_man *man, struct roff_node *n)
1.51 kristaps 524: {
525:
1.54 kristaps 526: /* Adjust siblings. */
527:
528: if (n->prev)
1.51 kristaps 529: n->prev->next = n->next;
1.54 kristaps 530: if (n->next)
531: n->next->prev = n->prev;
532:
533: /* Adjust parent. */
534:
535: if (n->parent) {
536: n->parent->nchild--;
537: if (n->parent->child == n)
538: n->parent->child = n->prev ? n->prev : n->next;
539: }
540:
541: /* Adjust parse point, if applicable. */
542:
1.119 schwarze 543: if (man && man->last == n) {
1.54 kristaps 544: /*XXX: this can occur when bailing from validation. */
545: /*assert(NULL == n->next);*/
546: if (n->prev) {
1.119 schwarze 547: man->last = n->prev;
1.153 schwarze 548: man->next = ROFF_NEXT_SIBLING;
1.54 kristaps 549: } else {
1.119 schwarze 550: man->last = n->parent;
1.153 schwarze 551: man->next = ROFF_NEXT_CHILD;
1.51 kristaps 552: }
553: }
554:
1.119 schwarze 555: if (man && man->first == n)
556: man->first = NULL;
1.112 kristaps 557: }
558:
559: const struct mparse *
1.153 schwarze 560: man_mparse(const struct roff_man *man)
1.112 kristaps 561: {
562:
1.119 schwarze 563: assert(man && man->parse);
564: return(man->parse);
1.126 schwarze 565: }
566:
567: void
1.151 schwarze 568: man_deroff(char **dest, const struct roff_node *n)
1.126 schwarze 569: {
570: char *cp;
571: size_t sz;
572:
1.150 schwarze 573: if (n->type != ROFFT_TEXT) {
1.126 schwarze 574: for (n = n->child; n; n = n->next)
575: man_deroff(dest, n);
576: return;
577: }
578:
1.127 schwarze 579: /* Skip leading whitespace and escape sequences. */
1.126 schwarze 580:
1.127 schwarze 581: cp = n->string;
582: while ('\0' != *cp) {
583: if ('\\' == *cp) {
584: cp++;
585: mandoc_escape((const char **)&cp, NULL, NULL);
586: } else if (isspace((unsigned char)*cp))
587: cp++;
588: else
1.126 schwarze 589: break;
1.127 schwarze 590: }
1.126 schwarze 591:
592: /* Skip trailing whitespace. */
593:
594: for (sz = strlen(cp); sz; sz--)
595: if (0 == isspace((unsigned char)cp[sz-1]))
596: break;
597:
598: /* Skip empty strings. */
599:
600: if (0 == sz)
601: return;
602:
603: if (NULL == *dest) {
604: *dest = mandoc_strndup(cp, sz);
605: return;
606: }
607:
608: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
609: free(*dest);
610: *dest = cp;
1.23 kristaps 611: }
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