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1.5 ! schwarze 1: /* $Id: mdoc.c,v 1.4 2009/06/15 02:19:32 schwarze Exp $ */
1.1 kristaps 2: /*
1.3 schwarze 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
1.3 schwarze 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: *
1.3 schwarze 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: */
17: #include <assert.h>
18: #include <ctype.h>
19: #include <stdarg.h>
20: #include <stdio.h>
21: #include <stdlib.h>
22: #include <string.h>
23:
24: #include "libmdoc.h"
25:
26: enum merr {
27: ENOCALL,
28: EBODYPROL,
29: EPROLBODY,
30: ESPACE,
31: ETEXTPROL,
32: ENOBLANK,
33: EMALLOC
34: };
35:
36: const char *const __mdoc_macronames[MDOC_MAX] = {
37: "\\\"", "Dd", "Dt", "Os",
38: "Sh", "Ss", "Pp", "D1",
39: "Dl", "Bd", "Ed", "Bl",
40: "El", "It", "Ad", "An",
41: "Ar", "Cd", "Cm", "Dv",
42: "Er", "Ev", "Ex", "Fa",
43: "Fd", "Fl", "Fn", "Ft",
44: "Ic", "In", "Li", "Nd",
45: "Nm", "Op", "Ot", "Pa",
46: "Rv", "St", "Va", "Vt",
47: /* LINTED */
48: "Xr", "\%A", "\%B", "\%D",
49: /* LINTED */
50: "\%I", "\%J", "\%N", "\%O",
51: /* LINTED */
52: "\%P", "\%R", "\%T", "\%V",
53: "Ac", "Ao", "Aq", "At",
54: "Bc", "Bf", "Bo", "Bq",
55: "Bsx", "Bx", "Db", "Dc",
56: "Do", "Dq", "Ec", "Ef",
57: "Em", "Eo", "Fx", "Ms",
58: "No", "Ns", "Nx", "Ox",
59: "Pc", "Pf", "Po", "Pq",
60: "Qc", "Ql", "Qo", "Qq",
61: "Re", "Rs", "Sc", "So",
62: "Sq", "Sm", "Sx", "Sy",
63: "Tn", "Ux", "Xc", "Xo",
64: "Fo", "Fc", "Oo", "Oc",
65: "Bk", "Ek", "Bt", "Hf",
66: "Fr", "Ud", "Lb", "Ap",
67: "Lp", "Lk", "Mt", "Brq",
68: /* LINTED */
69: "Bro", "Brc", "\%C", "Es",
70: /* LINTED */
71: "En", "Dx", "\%Q"
72: };
73:
74: const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
75: "split", "nosplit", "ragged",
76: "unfilled", "literal", "file",
77: "offset", "bullet", "dash",
78: "hyphen", "item", "enum",
79: "tag", "diag", "hang",
80: "ohang", "inset", "column",
81: "width", "compact", "std",
82: "filled", "words", "emphasis",
83: "symbolic", "nested"
84: };
85:
86: const char * const *mdoc_macronames = __mdoc_macronames;
87: const char * const *mdoc_argnames = __mdoc_argnames;
88:
89: static void mdoc_free1(struct mdoc *);
90: static int mdoc_alloc1(struct mdoc *);
91: static struct mdoc_node *node_alloc(struct mdoc *, int, int,
92: int, enum mdoc_type);
93: static int node_append(struct mdoc *,
94: struct mdoc_node *);
95: static int parsetext(struct mdoc *, int, char *);
96: static int parsemacro(struct mdoc *, int, char *);
97: static int macrowarn(struct mdoc *, int, const char *);
98: static int perr(struct mdoc *, int, int, enum merr);
99:
100: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
101:
102: /*
103: * Get the first (root) node of the parse tree.
104: */
105: const struct mdoc_node *
106: mdoc_node(const struct mdoc *m)
107: {
108:
109: return(MDOC_HALT & m->flags ? NULL : m->first);
110: }
111:
112:
113: const struct mdoc_meta *
114: mdoc_meta(const struct mdoc *m)
115: {
116:
117: return(MDOC_HALT & m->flags ? NULL : &m->meta);
118: }
119:
120:
121: static void
122: mdoc_free1(struct mdoc *mdoc)
123: {
124:
125: if (mdoc->first)
126: mdoc_node_freelist(mdoc->first);
127: if (mdoc->meta.title)
128: free(mdoc->meta.title);
129: if (mdoc->meta.os)
130: free(mdoc->meta.os);
131: if (mdoc->meta.name)
132: free(mdoc->meta.name);
133: if (mdoc->meta.arch)
134: free(mdoc->meta.arch);
135: if (mdoc->meta.vol)
136: free(mdoc->meta.vol);
137: }
138:
139:
140: static int
141: mdoc_alloc1(struct mdoc *mdoc)
142: {
143:
144: bzero(&mdoc->meta, sizeof(struct mdoc_meta));
145: mdoc->flags = 0;
146: mdoc->lastnamed = mdoc->lastsec = 0;
147: mdoc->last = calloc(1, sizeof(struct mdoc_node));
148: if (NULL == mdoc->last)
149: return(0);
150:
151: mdoc->first = mdoc->last;
152: mdoc->last->type = MDOC_ROOT;
153: mdoc->next = MDOC_NEXT_CHILD;
154: return(1);
155: }
156:
157:
158: /*
159: * Free up all resources contributed by a parse: the node tree,
160: * meta-data and so on. Then reallocate the root node for another
161: * parse.
162: */
163: int
164: mdoc_reset(struct mdoc *mdoc)
165: {
166:
167: mdoc_free1(mdoc);
168: return(mdoc_alloc1(mdoc));
169: }
170:
171:
172: /*
173: * Completely free up all resources.
174: */
175: void
176: mdoc_free(struct mdoc *mdoc)
177: {
178:
179: mdoc_free1(mdoc);
180: if (mdoc->htab)
181: mdoc_hash_free(mdoc->htab);
182: free(mdoc);
183: }
184:
185:
186: struct mdoc *
187: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
188: {
189: struct mdoc *p;
190:
191: if (NULL == (p = calloc(1, sizeof(struct mdoc))))
192: return(NULL);
193: if (cb)
194: (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
195:
196: p->data = data;
197: p->pflags = pflags;
198:
199: if (NULL == (p->htab = mdoc_hash_alloc())) {
200: free(p);
201: return(NULL);
202: } else if (mdoc_alloc1(p))
203: return(p);
204:
205: free(p);
206: return(NULL);
207: }
208:
209:
210: /*
211: * Climb back up the parse tree, validating open scopes. Mostly calls
212: * through to macro_end in macro.c.
213: */
214: int
215: mdoc_endparse(struct mdoc *m)
216: {
217:
218: if (MDOC_HALT & m->flags)
219: return(0);
220: else if (mdoc_macroend(m))
221: return(1);
222: m->flags |= MDOC_HALT;
223: return(0);
224: }
225:
226:
227: /*
228: * Main parse routine. Parses a single line -- really just hands off to
229: * the macro or text parser.
230: */
231: int
232: mdoc_parseln(struct mdoc *m, int ln, char *buf)
233: {
234:
235: /* If in error-mode, then we parse no more. */
236:
237: if (MDOC_HALT & m->flags)
238: return(0);
239:
240: return('.' == *buf ? parsemacro(m, ln, buf) :
241: parsetext(m, ln, buf));
242: }
243:
244:
245: void
246: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
247: {
248: char buf[256];
249: va_list ap;
250:
251: if (NULL == mdoc->cb.mdoc_msg)
252: return;
253:
254: va_start(ap, fmt);
255: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
256: va_end(ap);
257: (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
258: }
259:
260:
261: int
1.4 schwarze 262: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
263: const char *fmt, ...)
1.1 kristaps 264: {
265: char buf[256];
266: va_list ap;
267:
268: if (NULL == mdoc->cb.mdoc_err)
269: return(0);
270:
271: va_start(ap, fmt);
272: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
273: va_end(ap);
274: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
275: }
276:
277:
278: int
279: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
280: enum mdoc_warn type, const char *fmt, ...)
281: {
282: char buf[256];
283: va_list ap;
284:
285: if (NULL == mdoc->cb.mdoc_warn)
286: return(0);
287:
288: va_start(ap, fmt);
289: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
290: va_end(ap);
291: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.5 ! schwarze 292: }
! 293:
! 294:
! 295: int
! 296: mdoc_nwarn(struct mdoc *mdoc, const struct mdoc_node *node, enum mdoc_warn type,
! 297: const char *fmt, ...)
! 298: {
! 299: char buf[256];
! 300: va_list ap;
! 301:
! 302: if (NULL == mdoc->cb.mdoc_warn)
! 303: return(0);
! 304:
! 305: va_start(ap, fmt);
! 306: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 307: va_end(ap);
! 308: return((*mdoc->cb.mdoc_warn)(mdoc->data, node->line, node->pos, type,
! 309: buf));
! 310: }
! 311:
! 312: int
! 313: mdoc_nerr(struct mdoc *mdoc, const struct mdoc_node *node, const char *fmt, ...)
! 314: {
! 315: char buf[256];
! 316: va_list ap;
! 317:
! 318: if (NULL == mdoc->cb.mdoc_err)
! 319: return(0);
! 320:
! 321: va_start(ap, fmt);
! 322: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 323: va_end(ap);
! 324: return((*mdoc->cb.mdoc_err)(mdoc->data, node->line, node->pos, buf));
! 325: }
! 326:
! 327:
! 328: int
! 329: mdoc_warn(struct mdoc *mdoc, enum mdoc_warn type, const char *fmt, ...)
! 330: {
! 331: char buf[256];
! 332: va_list ap;
! 333:
! 334: if (NULL == mdoc->cb.mdoc_warn)
! 335: return(0);
! 336:
! 337: va_start(ap, fmt);
! 338: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 339: va_end(ap);
! 340: return((*mdoc->cb.mdoc_warn)(mdoc->data, mdoc->last->line,
! 341: mdoc->last->pos, type, buf));
! 342: }
! 343:
! 344:
! 345: int
! 346: mdoc_err(struct mdoc *mdoc, const char *fmt, ...)
! 347: {
! 348: char buf[256];
! 349: va_list ap;
! 350:
! 351: if (NULL == mdoc->cb.mdoc_err)
! 352: return(0);
! 353:
! 354: va_start(ap, fmt);
! 355: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 356: va_end(ap);
! 357: return((*mdoc->cb.mdoc_err)(mdoc->data, mdoc->last->line,
! 358: mdoc->last->pos, buf));
! 359: }
! 360:
! 361:
! 362: void
! 363: mdoc_msg(struct mdoc *mdoc, const char *fmt, ...)
! 364: {
! 365: char buf[256];
! 366: va_list ap;
! 367:
! 368: if (NULL == mdoc->cb.mdoc_msg)
! 369: return;
! 370:
! 371: va_start(ap, fmt);
! 372: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 373: va_end(ap);
! 374: (*mdoc->cb.mdoc_msg)(mdoc->data, mdoc->last->line, mdoc->last->pos,
! 375: buf);
! 376: }
! 377:
! 378:
! 379: void
! 380: mdoc_pmsg(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
! 381: {
! 382: char buf[256];
! 383: va_list ap;
! 384:
! 385: if (NULL == mdoc->cb.mdoc_msg)
! 386: return;
! 387:
! 388: va_start(ap, fmt);
! 389: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 390: va_end(ap);
! 391: (*mdoc->cb.mdoc_msg)(mdoc->data, line, pos, buf);
! 392: }
! 393:
! 394:
! 395: int
! 396: mdoc_pwarn(struct mdoc *mdoc, int line, int pos, enum mdoc_warn type,
! 397: const char *fmt, ...)
! 398: {
! 399: char buf[256];
! 400: va_list ap;
! 401:
! 402: if (NULL == mdoc->cb.mdoc_warn)
! 403: return(0);
! 404:
! 405: va_start(ap, fmt);
! 406: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 407: va_end(ap);
! 408: return((*mdoc->cb.mdoc_warn)(mdoc->data, line, pos, type, buf));
! 409: }
! 410:
! 411: int
! 412: mdoc_perr(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
! 413: {
! 414: char buf[256];
! 415: va_list ap;
! 416:
! 417: if (NULL == mdoc->cb.mdoc_err)
! 418: return(0);
! 419:
! 420: va_start(ap, fmt);
! 421: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 422: va_end(ap);
! 423: return((*mdoc->cb.mdoc_err)(mdoc->data, line, pos, buf));
1.2 miod 424: }
425:
426:
427: int
1.1 kristaps 428: mdoc_macro(struct mdoc *m, int tok,
429: int ln, int pp, int *pos, char *buf)
430: {
431:
432: /* FIXME - these should happen during validation. */
433:
434: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
435: SEC_PROLOGUE != m->lastnamed)
436: return(perr(m, ln, pp, EPROLBODY));
437:
438: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
439: SEC_PROLOGUE == m->lastnamed)
440: return(perr(m, ln, pp, EBODYPROL));
441:
442: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
443: return(perr(m, ln, pp, ENOCALL));
444:
445: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
446: }
447:
448:
449: static int
450: perr(struct mdoc *m, int line, int pos, enum merr type)
451: {
452: char *p;
453:
454: p = NULL;
455: switch (type) {
456: case (ENOCALL):
457: p = "not callable";
458: break;
459: case (EPROLBODY):
460: p = "macro disallowed in document body";
461: break;
462: case (EBODYPROL):
463: p = "macro disallowed in document prologue";
464: break;
465: case (EMALLOC):
466: p = "memory exhausted";
467: break;
468: case (ETEXTPROL):
469: p = "text disallowed in document prologue";
470: break;
471: case (ENOBLANK):
472: p = "blank lines disallowed in non-literal contexts";
473: break;
474: case (ESPACE):
475: p = "whitespace disallowed after delimiter";
476: break;
477: }
478: assert(p);
479: return(mdoc_perr(m, line, pos, p));
480: }
481:
482:
483: static int
484: node_append(struct mdoc *mdoc, struct mdoc_node *p)
485: {
486:
487: assert(mdoc->last);
488: assert(mdoc->first);
489: assert(MDOC_ROOT != p->type);
490:
491: switch (mdoc->next) {
492: case (MDOC_NEXT_SIBLING):
493: mdoc->last->next = p;
494: p->prev = mdoc->last;
495: p->parent = mdoc->last->parent;
496: break;
497: case (MDOC_NEXT_CHILD):
498: mdoc->last->child = p;
499: p->parent = mdoc->last;
500: break;
501: default:
502: abort();
503: /* NOTREACHED */
504: }
505:
506: if ( ! mdoc_valid_pre(mdoc, p))
507: return(0);
508: if ( ! mdoc_action_pre(mdoc, p))
509: return(0);
510:
511: switch (p->type) {
512: case (MDOC_HEAD):
513: assert(MDOC_BLOCK == p->parent->type);
514: p->parent->head = p;
515: break;
516: case (MDOC_TAIL):
517: assert(MDOC_BLOCK == p->parent->type);
518: p->parent->tail = p;
519: break;
520: case (MDOC_BODY):
521: assert(MDOC_BLOCK == p->parent->type);
522: p->parent->body = p;
523: break;
524: default:
525: break;
526: }
527:
528: mdoc->last = p;
529:
530: switch (p->type) {
531: case (MDOC_TEXT):
532: if ( ! mdoc_valid_post(mdoc))
533: return(0);
534: if ( ! mdoc_action_post(mdoc))
535: return(0);
536: break;
537: default:
538: break;
539: }
540:
541: return(1);
542: }
543:
544:
545: static struct mdoc_node *
546: node_alloc(struct mdoc *mdoc, int line,
547: int pos, int tok, enum mdoc_type type)
548: {
549: struct mdoc_node *p;
550:
551: if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
552: (void)verr(mdoc, EMALLOC);
553: return(NULL);
554: }
555:
556: p->sec = mdoc->lastsec;
557: p->line = line;
558: p->pos = pos;
559: p->tok = tok;
560: if (MDOC_TEXT != (p->type = type))
561: assert(p->tok >= 0);
562:
563: return(p);
564: }
565:
566:
567: int
568: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
569: {
570: struct mdoc_node *p;
571:
572: p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
573: if (NULL == p)
574: return(0);
575: return(node_append(mdoc, p));
576: }
577:
578:
579: int
580: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
581: {
582: struct mdoc_node *p;
583:
584: assert(mdoc->first);
585: assert(mdoc->last);
586:
587: p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
588: if (NULL == p)
589: return(0);
590: return(node_append(mdoc, p));
591: }
592:
593:
594: int
595: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
596: {
597: struct mdoc_node *p;
598:
599: p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
600: if (NULL == p)
601: return(0);
602: return(node_append(mdoc, p));
603: }
604:
605:
606: int
607: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
608: int tok, struct mdoc_arg *args)
609: {
610: struct mdoc_node *p;
611:
612: p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
613: if (NULL == p)
614: return(0);
1.4 schwarze 615: p->args = args;
616: if (p->args)
1.1 kristaps 617: (args->refcnt)++;
618: return(node_append(mdoc, p));
619: }
620:
621:
622: int
623: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
624: int tok, struct mdoc_arg *args)
625: {
626: struct mdoc_node *p;
627:
628: p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
629: if (NULL == p)
630: return(0);
1.4 schwarze 631: p->args = args;
632: if (p->args)
1.1 kristaps 633: (args->refcnt)++;
634: return(node_append(mdoc, p));
635: }
636:
637:
638: int
639: mdoc_word_alloc(struct mdoc *mdoc,
640: int line, int pos, const char *word)
641: {
642: struct mdoc_node *p;
643:
644: p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
645: if (NULL == p)
646: return(0);
647: if (NULL == (p->string = strdup(word))) {
648: (void)verr(mdoc, EMALLOC);
649: return(0);
650: }
651: return(node_append(mdoc, p));
652: }
653:
654:
655: void
656: mdoc_node_free(struct mdoc_node *p)
657: {
658:
659: if (p->string)
660: free(p->string);
661: if (p->args)
662: mdoc_argv_free(p->args);
663: free(p);
664: }
665:
666:
667: void
668: mdoc_node_freelist(struct mdoc_node *p)
669: {
670:
671: if (p->child)
672: mdoc_node_freelist(p->child);
673: if (p->next)
674: mdoc_node_freelist(p->next);
675:
676: mdoc_node_free(p);
677: }
678:
679:
680: /*
681: * Parse free-form text, that is, a line that does not begin with the
682: * control character.
683: */
684: static int
685: parsetext(struct mdoc *m, int line, char *buf)
686: {
687:
688: if (SEC_PROLOGUE == m->lastnamed)
689: return(perr(m, line, 0, ETEXTPROL));
690:
691: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
692: return(perr(m, line, 0, ENOBLANK));
693:
694: if ( ! mdoc_word_alloc(m, line, 0, buf))
695: return(0);
696:
697: m->next = MDOC_NEXT_SIBLING;
698: return(1);
699: }
700:
701:
702: static int
703: macrowarn(struct mdoc *m, int ln, const char *buf)
704: {
705: if ( ! (MDOC_IGN_MACRO & m->pflags))
706: return(mdoc_perr(m, ln, 1,
707: "unknown macro: %s%s",
708: buf, strlen(buf) > 3 ? "..." : ""));
709: return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
710: "unknown macro: %s%s",
711: buf, strlen(buf) > 3 ? "..." : ""));
712: }
713:
714:
715:
716: /*
717: * Parse a macro line, that is, a line beginning with the control
718: * character.
719: */
720: int
721: parsemacro(struct mdoc *m, int ln, char *buf)
722: {
723: int i, c;
724: char mac[5];
725:
726: /* Comments and empties are quickly ignored. */
727:
728: if (0 == buf[1])
729: return(1);
730:
731: if (' ' == buf[1]) {
732: i = 2;
733: while (buf[i] && ' ' == buf[i])
734: i++;
735: if (0 == buf[i])
736: return(1);
737: return(perr(m, ln, 1, ESPACE));
738: }
739:
740: if (buf[1] && '\\' == buf[1])
741: if (buf[2] && '\"' == buf[2])
742: return(1);
743:
744: /* Copy the first word into a nil-terminated buffer. */
745:
746: for (i = 1; i < 5; i++) {
747: if (0 == (mac[i - 1] = buf[i]))
748: break;
749: else if (' ' == buf[i])
750: break;
751: }
752:
753: mac[i - 1] = 0;
754:
755: if (i == 5 || i <= 2) {
756: if ( ! macrowarn(m, ln, mac))
757: goto err;
758: return(1);
759: }
760:
761: if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
762: if ( ! macrowarn(m, ln, mac))
763: goto err;
764: return(1);
765: }
766:
767: /* The macro is sane. Jump to the next word. */
768:
769: while (buf[i] && ' ' == buf[i])
770: i++;
771:
772: /* Begin recursive parse sequence. */
773:
774: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
775: goto err;
776:
777: return(1);
778:
779: err: /* Error out. */
780:
781: m->flags |= MDOC_HALT;
782: return(0);
783: }