Annotation of src/usr.bin/mandoc/man.c, Revision 1.105
1.105 ! schwarze 1: /* $OpenBSD: man.c,v 1.104 2015/04/18 17:28:08 schwarze Exp $ */
1.1 kristaps 2: /*
1.52 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.97 schwarze 4: * Copyright (c) 2013, 2014, 2015 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: *
1.98 schwarze 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.2 schwarze 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.98 schwarze 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.2 schwarze 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:
1.98 schwarze 28: #include "mandoc_aux.h"
29: #include "mandoc.h"
30: #include "roff.h"
1.59 schwarze 31: #include "man.h"
1.98 schwarze 32: #include "libmandoc.h"
1.1 kristaps 33: #include "libman.h"
34:
1.79 schwarze 35: const char *const __man_macronames[MAN_MAX] = {
1.3 schwarze 36: "br", "TH", "SH", "SS",
1.79 schwarze 37: "TP", "LP", "PP", "P",
1.1 kristaps 38: "IP", "HP", "SM", "SB",
39: "BI", "IB", "BR", "RB",
40: "R", "B", "I", "IR",
1.96 schwarze 41: "RI", "sp", "nf",
1.50 schwarze 42: "fi", "RE", "RS", "DT",
43: "UC", "PD", "AT", "in",
1.70 schwarze 44: "ft", "OP", "EX", "EE",
1.78 schwarze 45: "UR", "UE", "ll"
1.1 kristaps 46: };
47:
48: const char * const *man_macronames = __man_macronames;
49:
1.101 schwarze 50: static void man_breakscope(struct roff_man *, int);
51: static void man_descope(struct roff_man *, int, int);
52: static struct roff_node *man_node_alloc(struct roff_man *, int, int,
1.99 schwarze 53: enum roff_type, int);
1.101 schwarze 54: static void man_node_append(struct roff_man *,
55: struct roff_node *);
1.99 schwarze 56: static void man_node_free(struct roff_node *);
1.101 schwarze 57: static void man_node_unlink(struct roff_man *,
58: struct roff_node *);
59: static int man_ptext(struct roff_man *, int, char *, int);
60: static int man_pmacro(struct roff_man *, int, char *, int);
1.1 kristaps 61:
62:
1.16 schwarze 63: void
1.101 schwarze 64: man_endparse(struct roff_man *man)
1.1 kristaps 65: {
66:
1.92 schwarze 67: man_macroend(man);
1.1 kristaps 68: }
69:
70: int
1.101 schwarze 71: man_parseln(struct roff_man *man, int ln, char *buf, int offs)
1.1 kristaps 72: {
1.25 schwarze 73:
1.98 schwarze 74: if (man->last->type != ROFFT_EQN || ln > man->last->line)
1.89 schwarze 75: man->flags |= MAN_NEWLINE;
1.54 schwarze 76:
1.69 schwarze 77: return (roff_getcontrol(man->roff, buf, &offs) ?
1.79 schwarze 78: man_pmacro(man, ln, buf, offs) :
79: man_ptext(man, ln, buf, offs));
1.1 kristaps 80: }
81:
1.92 schwarze 82: static void
1.101 schwarze 83: man_node_append(struct roff_man *man, struct roff_node *p)
1.1 kristaps 84: {
85:
86: assert(man->last);
87: assert(man->first);
1.98 schwarze 88: assert(p->type != ROFFT_ROOT);
1.1 kristaps 89:
90: switch (man->next) {
1.101 schwarze 91: case ROFF_NEXT_SIBLING:
1.1 kristaps 92: man->last->next = p;
93: p->prev = man->last;
94: p->parent = man->last->parent;
95: break;
1.101 schwarze 96: case ROFF_NEXT_CHILD:
1.1 kristaps 97: man->last->child = p;
98: p->parent = man->last;
99: break;
100: default:
101: abort();
102: /* NOTREACHED */
103: }
1.79 schwarze 104:
1.22 schwarze 105: assert(p->parent);
1.5 schwarze 106: p->parent->nchild++;
1.1 kristaps 107:
1.9 schwarze 108: switch (p->type) {
1.98 schwarze 109: case ROFFT_BLOCK:
1.86 schwarze 110: if (p->tok == MAN_SH || p->tok == MAN_SS)
111: man->flags &= ~MAN_LITERAL;
112: break;
1.98 schwarze 113: case ROFFT_HEAD:
114: assert(p->parent->type == ROFFT_BLOCK);
1.9 schwarze 115: p->parent->head = p;
116: break;
1.98 schwarze 117: case ROFFT_BODY:
118: assert(p->parent->type == ROFFT_BLOCK);
1.9 schwarze 119: p->parent->body = p;
120: break;
121: default:
122: break;
123: }
124:
1.1 kristaps 125: man->last = p;
126:
127: switch (p->type) {
1.98 schwarze 128: case ROFFT_TBL:
1.52 schwarze 129: /* FALLTHROUGH */
1.98 schwarze 130: case ROFFT_TEXT:
1.92 schwarze 131: man_valid_post(man);
1.1 kristaps 132: break;
133: default:
134: break;
135: }
136: }
137:
1.99 schwarze 138: static struct roff_node *
1.101 schwarze 139: man_node_alloc(struct roff_man *man, int line, int pos,
1.99 schwarze 140: enum roff_type type, int tok)
1.1 kristaps 141: {
1.99 schwarze 142: struct roff_node *p;
1.1 kristaps 143:
1.99 schwarze 144: p = mandoc_calloc(1, sizeof(*p));
1.1 kristaps 145: p->line = line;
146: p->pos = pos;
147: p->type = type;
148: p->tok = tok;
1.54 schwarze 149:
1.92 schwarze 150: if (man->flags & MAN_NEWLINE)
1.54 schwarze 151: p->flags |= MAN_LINE;
1.69 schwarze 152: man->flags &= ~MAN_NEWLINE;
1.1 kristaps 153: return(p);
154: }
155:
1.92 schwarze 156: void
1.101 schwarze 157: man_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1.1 kristaps 158: {
1.99 schwarze 159: struct roff_node *p;
1.1 kristaps 160:
1.98 schwarze 161: p = man_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1.92 schwarze 162: man_node_append(man, p);
1.101 schwarze 163: man->next = ROFF_NEXT_CHILD;
1.1 kristaps 164: }
165:
1.92 schwarze 166: void
1.101 schwarze 167: man_head_alloc(struct roff_man *man, int line, int pos, int tok)
1.9 schwarze 168: {
1.99 schwarze 169: struct roff_node *p;
1.9 schwarze 170:
1.98 schwarze 171: p = man_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1.92 schwarze 172: man_node_append(man, p);
1.101 schwarze 173: man->next = ROFF_NEXT_CHILD;
1.9 schwarze 174: }
175:
1.92 schwarze 176: void
1.101 schwarze 177: man_body_alloc(struct roff_man *man, int line, int pos, int tok)
1.9 schwarze 178: {
1.99 schwarze 179: struct roff_node *p;
1.9 schwarze 180:
1.98 schwarze 181: p = man_node_alloc(man, line, pos, ROFFT_BODY, tok);
1.92 schwarze 182: man_node_append(man, p);
1.101 schwarze 183: man->next = ROFF_NEXT_CHILD;
1.9 schwarze 184: }
185:
1.92 schwarze 186: void
1.101 schwarze 187: man_block_alloc(struct roff_man *man, int line, int pos, int tok)
1.9 schwarze 188: {
1.99 schwarze 189: struct roff_node *p;
1.9 schwarze 190:
1.98 schwarze 191: p = man_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1.92 schwarze 192: man_node_append(man, p);
1.101 schwarze 193: man->next = ROFF_NEXT_CHILD;
1.9 schwarze 194: }
195:
1.92 schwarze 196: void
1.101 schwarze 197: man_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1.1 kristaps 198: {
1.99 schwarze 199: struct roff_node *n;
1.1 kristaps 200:
1.98 schwarze 201: n = man_node_alloc(man, line, pos, ROFFT_TEXT, MAN_MAX);
1.69 schwarze 202: n->string = roff_strdup(man->roff, word);
1.92 schwarze 203: man_node_append(man, n);
1.101 schwarze 204: man->next = ROFF_NEXT_SIBLING;
1.90 schwarze 205: }
206:
207: void
1.101 schwarze 208: man_word_append(struct roff_man *man, const char *word)
1.90 schwarze 209: {
1.99 schwarze 210: struct roff_node *n;
1.90 schwarze 211: char *addstr, *newstr;
212:
213: n = man->last;
214: addstr = roff_strdup(man->roff, word);
215: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
216: free(addstr);
217: free(n->string);
218: n->string = newstr;
1.101 schwarze 219: man->next = ROFF_NEXT_SIBLING;
1.10 schwarze 220: }
221:
1.22 schwarze 222: /*
223: * Free all of the resources held by a node. This does NOT unlink a
224: * node from its context; for that, see man_node_unlink().
225: */
226: static void
1.99 schwarze 227: man_node_free(struct roff_node *p)
1.1 kristaps 228: {
229:
1.92 schwarze 230: free(p->string);
1.1 kristaps 231: free(p);
232: }
233:
234: void
1.101 schwarze 235: man_node_delete(struct roff_man *man, struct roff_node *p)
1.1 kristaps 236: {
237:
1.22 schwarze 238: while (p->child)
1.69 schwarze 239: man_node_delete(man, p->child);
1.22 schwarze 240:
1.69 schwarze 241: man_node_unlink(man, p);
1.1 kristaps 242: man_node_free(p);
243: }
244:
1.93 schwarze 245: void
1.101 schwarze 246: man_addeqn(struct roff_man *man, const struct eqn *ep)
1.57 schwarze 247: {
1.99 schwarze 248: struct roff_node *n;
1.57 schwarze 249:
1.98 schwarze 250: n = man_node_alloc(man, ep->ln, ep->pos, ROFFT_EQN, MAN_MAX);
1.57 schwarze 251: n->eqn = ep;
1.88 schwarze 252: if (ep->ln > man->last->line)
253: n->flags |= MAN_LINE;
1.92 schwarze 254: man_node_append(man, n);
1.101 schwarze 255: man->next = ROFF_NEXT_SIBLING;
1.92 schwarze 256: man_descope(man, ep->ln, ep->pos);
1.57 schwarze 257: }
1.1 kristaps 258:
1.93 schwarze 259: void
1.101 schwarze 260: man_addspan(struct roff_man *man, const struct tbl_span *sp)
1.52 schwarze 261: {
1.99 schwarze 262: struct roff_node *n;
1.52 schwarze 263:
1.97 schwarze 264: man_breakscope(man, MAN_MAX);
1.98 schwarze 265: n = man_node_alloc(man, sp->line, 0, ROFFT_TBL, MAN_MAX);
1.55 schwarze 266: n->span = sp;
1.92 schwarze 267: man_node_append(man, n);
1.101 schwarze 268: man->next = ROFF_NEXT_SIBLING;
1.92 schwarze 269: man_descope(man, sp->line, 0);
1.52 schwarze 270: }
271:
1.92 schwarze 272: static void
1.101 schwarze 273: man_descope(struct roff_man *man, int line, int offs)
1.52 schwarze 274: {
275: /*
276: * Co-ordinate what happens with having a next-line scope open:
277: * first close out the element scope (if applicable), then close
278: * out the block scope (also if applicable).
279: */
280:
1.92 schwarze 281: if (man->flags & MAN_ELINE) {
1.69 schwarze 282: man->flags &= ~MAN_ELINE;
1.92 schwarze 283: man_unscope(man, man->last->parent);
1.52 schwarze 284: }
1.92 schwarze 285: if ( ! (man->flags & MAN_BLINE))
286: return;
1.69 schwarze 287: man->flags &= ~MAN_BLINE;
1.92 schwarze 288: man_unscope(man, man->last->parent);
289: man_body_alloc(man, line, offs, man->last->tok);
1.52 schwarze 290: }
291:
1.1 kristaps 292: static int
1.101 schwarze 293: man_ptext(struct roff_man *man, int line, char *buf, int offs)
1.1 kristaps 294: {
1.27 schwarze 295: int i;
1.26 schwarze 296:
1.10 schwarze 297: /* Literal free-form text whitespace is preserved. */
298:
1.92 schwarze 299: if (man->flags & MAN_LITERAL) {
300: man_word_alloc(man, line, offs, buf + offs);
301: man_descope(man, line, offs);
302: return(1);
1.10 schwarze 303: }
304:
1.92 schwarze 305: for (i = offs; buf[i] == ' '; i++)
1.10 schwarze 306: /* Skip leading whitespace. */ ;
1.18 schwarze 307:
1.71 schwarze 308: /*
309: * Blank lines are ignored right after headings
310: * but add a single vertical space elsewhere.
311: */
312:
1.92 schwarze 313: if (buf[i] == '\0') {
1.27 schwarze 314: /* Allocate a blank entry. */
1.92 schwarze 315: if (man->last->tok != MAN_SH &&
316: man->last->tok != MAN_SS) {
317: man_elem_alloc(man, line, offs, MAN_sp);
1.101 schwarze 318: man->next = ROFF_NEXT_SIBLING;
1.71 schwarze 319: }
1.68 schwarze 320: return(1);
1.10 schwarze 321: }
1.1 kristaps 322:
1.79 schwarze 323: /*
1.27 schwarze 324: * Warn if the last un-escaped character is whitespace. Then
1.79 schwarze 325: * strip away the remaining spaces (tabs stay!).
1.27 schwarze 326: */
1.18 schwarze 327:
1.27 schwarze 328: i = (int)strlen(buf);
329: assert(i);
1.18 schwarze 330:
1.27 schwarze 331: if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
332: if (i > 1 && '\\' != buf[i - 2])
1.81 schwarze 333: mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
334: line, i - 1, NULL);
1.18 schwarze 335:
1.27 schwarze 336: for (--i; i && ' ' == buf[i]; i--)
337: /* Spin back to non-space. */ ;
1.10 schwarze 338:
1.27 schwarze 339: /* Jump ahead of escaped whitespace. */
340: i += '\\' == buf[i] ? 2 : 1;
1.18 schwarze 341:
1.27 schwarze 342: buf[i] = '\0';
1.10 schwarze 343: }
1.92 schwarze 344: man_word_alloc(man, line, offs, buf + offs);
1.28 schwarze 345:
346: /*
347: * End-of-sentence check. If the last character is an unescaped
348: * EOS character, then flag the node as being the end of a
349: * sentence. The front-end will know how to interpret this.
350: */
351:
352: assert(i);
1.72 schwarze 353: if (mandoc_eos(buf, (size_t)i))
1.69 schwarze 354: man->last->flags |= MAN_EOS;
1.10 schwarze 355:
1.92 schwarze 356: man_descope(man, line, offs);
357: return(1);
1.1 kristaps 358: }
359:
1.53 schwarze 360: static int
1.101 schwarze 361: man_pmacro(struct roff_man *man, int ln, char *buf, int offs)
1.1 kristaps 362: {
1.99 schwarze 363: struct roff_node *n;
1.91 schwarze 364: const char *cp;
1.99 schwarze 365: int tok;
1.84 schwarze 366: int i, ppos;
367: int bline;
1.91 schwarze 368: char mac[5];
1.1 kristaps 369:
1.59 schwarze 370: ppos = offs;
1.1 kristaps 371:
1.23 schwarze 372: /*
1.59 schwarze 373: * Copy the first word into a nil-terminated buffer.
1.91 schwarze 374: * Stop when a space, tab, escape, or eoln is encountered.
1.23 schwarze 375: */
1.27 schwarze 376:
1.59 schwarze 377: i = 0;
1.91 schwarze 378: while (i < 4 && strchr(" \t\\", buf[offs]) == NULL)
1.59 schwarze 379: mac[i++] = buf[offs++];
1.1 kristaps 380:
1.59 schwarze 381: mac[i] = '\0';
1.1 kristaps 382:
1.59 schwarze 383: tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
1.1 kristaps 384:
1.91 schwarze 385: if (tok == MAN_MAX) {
1.85 schwarze 386: mandoc_msg(MANDOCERR_MACRO, man->parse,
387: ln, ppos, buf + ppos - 1);
1.1 kristaps 388: return(1);
389: }
390:
1.91 schwarze 391: /* Skip a leading escape sequence or tab. */
392:
393: switch (buf[offs]) {
394: case '\\':
395: cp = buf + offs + 1;
396: mandoc_escape(&cp, NULL, NULL);
397: offs = cp - buf;
398: break;
399: case '\t':
400: offs++;
401: break;
402: default:
403: break;
404: }
405:
406: /* Jump to the next non-whitespace word. */
1.1 kristaps 407:
1.92 schwarze 408: while (buf[offs] && buf[offs] == ' ')
1.59 schwarze 409: offs++;
1.18 schwarze 410:
1.79 schwarze 411: /*
1.27 schwarze 412: * Trailing whitespace. Note that tabs are allowed to be passed
413: * into the parser as "text", so we only warn about spaces here.
414: */
1.18 schwarze 415:
1.92 schwarze 416: if (buf[offs] == '\0' && buf[offs - 1] == ' ')
1.81 schwarze 417: mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
418: ln, offs - 1, NULL);
1.1 kristaps 419:
1.79 schwarze 420: /*
1.97 schwarze 421: * Some macros break next-line scopes; otherwise, remember
422: * whether we are in next-line scope for a block head.
1.21 schwarze 423: */
424:
1.97 schwarze 425: man_breakscope(man, tok);
1.84 schwarze 426: bline = man->flags & MAN_BLINE;
1.24 schwarze 427:
428: /* Call to handler... */
1.1 kristaps 429:
1.22 schwarze 430: assert(man_macros[tok].fp);
1.92 schwarze 431: (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf);
1.73 schwarze 432:
433: /* In quick mode (for mandocdb), abort after the NAME section. */
434:
1.92 schwarze 435: if (man->quick && tok == MAN_SH) {
1.80 schwarze 436: n = man->last;
1.98 schwarze 437: if (n->type == ROFFT_BODY &&
1.80 schwarze 438: strcmp(n->prev->child->string, "NAME"))
439: return(2);
440: }
1.1 kristaps 441:
1.79 schwarze 442: /*
1.84 schwarze 443: * If we are in a next-line scope for a block head,
444: * close it out now and switch to the body,
445: * unless the next-line scope is allowed to continue.
1.21 schwarze 446: */
447:
1.84 schwarze 448: if ( ! bline || man->flags & MAN_ELINE ||
449: man_macros[tok].flags & MAN_NSCOPED)
1.21 schwarze 450: return(1);
1.1 kristaps 451:
1.92 schwarze 452: assert(man->flags & MAN_BLINE);
1.69 schwarze 453: man->flags &= ~MAN_BLINE;
1.1 kristaps 454:
1.92 schwarze 455: man_unscope(man, man->last->parent);
456: man_body_alloc(man, ln, ppos, man->last->tok);
457: return(1);
1.97 schwarze 458: }
459:
460: void
1.101 schwarze 461: man_breakscope(struct roff_man *man, int tok)
1.97 schwarze 462: {
1.99 schwarze 463: struct roff_node *n;
1.97 schwarze 464:
465: /*
466: * An element next line scope is open,
467: * and the new macro is not allowed inside elements.
468: * Delete the element that is being broken.
469: */
470:
471: if (man->flags & MAN_ELINE && (tok == MAN_MAX ||
472: ! (man_macros[tok].flags & MAN_NSCOPED))) {
473: n = man->last;
1.98 schwarze 474: assert(n->type != ROFFT_TEXT);
1.97 schwarze 475: if (man_macros[n->tok].flags & MAN_NSCOPED)
476: n = n->parent;
477:
478: mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
479: n->line, n->pos, "%s breaks %s",
480: tok == MAN_MAX ? "TS" : man_macronames[tok],
481: man_macronames[n->tok]);
482:
483: man_node_delete(man, n);
484: man->flags &= ~MAN_ELINE;
485: }
486:
487: /*
488: * A block header next line scope is open,
489: * and the new macro is not allowed inside block headers.
490: * Delete the block that is being broken.
491: */
492:
493: if (man->flags & MAN_BLINE && (tok == MAN_MAX ||
494: man_macros[tok].flags & MAN_BSCOPE)) {
495: n = man->last;
1.98 schwarze 496: if (n->type == ROFFT_TEXT)
1.97 schwarze 497: n = n->parent;
498: if ( ! (man_macros[n->tok].flags & MAN_BSCOPE))
499: n = n->parent;
500:
1.98 schwarze 501: assert(n->type == ROFFT_HEAD);
1.97 schwarze 502: n = n->parent;
1.98 schwarze 503: assert(n->type == ROFFT_BLOCK);
1.97 schwarze 504: assert(man_macros[n->tok].flags & MAN_SCOPED);
505:
506: mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
507: n->line, n->pos, "%s breaks %s",
508: tok == MAN_MAX ? "TS" : man_macronames[tok],
509: man_macronames[n->tok]);
510:
511: man_node_delete(man, n);
512: man->flags &= ~MAN_BLINE;
513: }
1.1 kristaps 514: }
1.21 schwarze 515:
1.22 schwarze 516: /*
1.69 schwarze 517: * Unlink a node from its context. If "man" is provided, the last parse
1.22 schwarze 518: * point will also be adjusted accordingly.
519: */
520: static void
1.101 schwarze 521: man_node_unlink(struct roff_man *man, struct roff_node *n)
1.21 schwarze 522: {
523:
1.22 schwarze 524: /* Adjust siblings. */
525:
526: if (n->prev)
1.21 schwarze 527: n->prev->next = n->next;
1.22 schwarze 528: if (n->next)
529: n->next->prev = n->prev;
530:
531: /* Adjust parent. */
532:
533: if (n->parent) {
534: n->parent->nchild--;
535: if (n->parent->child == n)
536: n->parent->child = n->prev ? n->prev : n->next;
537: }
538:
539: /* Adjust parse point, if applicable. */
540:
1.69 schwarze 541: if (man && man->last == n) {
1.22 schwarze 542: /*XXX: this can occur when bailing from validation. */
543: /*assert(NULL == n->next);*/
544: if (n->prev) {
1.69 schwarze 545: man->last = n->prev;
1.101 schwarze 546: man->next = ROFF_NEXT_SIBLING;
1.22 schwarze 547: } else {
1.69 schwarze 548: man->last = n->parent;
1.101 schwarze 549: man->next = ROFF_NEXT_CHILD;
1.21 schwarze 550: }
551: }
552:
1.69 schwarze 553: if (man && man->first == n)
554: man->first = NULL;
1.62 schwarze 555: }
556:
557: const struct mparse *
1.101 schwarze 558: man_mparse(const struct roff_man *man)
1.62 schwarze 559: {
560:
1.69 schwarze 561: assert(man && man->parse);
562: return(man->parse);
1.76 schwarze 563: }
564:
565: void
1.99 schwarze 566: man_deroff(char **dest, const struct roff_node *n)
1.76 schwarze 567: {
568: char *cp;
569: size_t sz;
570:
1.98 schwarze 571: if (n->type != ROFFT_TEXT) {
1.76 schwarze 572: for (n = n->child; n; n = n->next)
573: man_deroff(dest, n);
574: return;
575: }
576:
1.77 schwarze 577: /* Skip leading whitespace and escape sequences. */
1.76 schwarze 578:
1.77 schwarze 579: cp = n->string;
580: while ('\0' != *cp) {
581: if ('\\' == *cp) {
582: cp++;
583: mandoc_escape((const char **)&cp, NULL, NULL);
584: } else if (isspace((unsigned char)*cp))
585: cp++;
586: else
1.76 schwarze 587: break;
1.77 schwarze 588: }
1.76 schwarze 589:
590: /* Skip trailing whitespace. */
591:
592: for (sz = strlen(cp); sz; sz--)
593: if (0 == isspace((unsigned char)cp[sz-1]))
594: break;
595:
596: /* Skip empty strings. */
597:
598: if (0 == sz)
599: return;
600:
601: if (NULL == *dest) {
602: *dest = mandoc_strndup(cp, sz);
603: return;
604: }
605:
606: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
607: free(*dest);
608: *dest = cp;
1.4 schwarze 609: }
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