Annotation of mandoc/mdoc.c, Revision 1.71
1.71 ! kristaps 1: /* $Id: mdoc.c,v 1.70 2009/03/23 14:22:11 kristaps Exp $ */
1.1 kristaps 2: /*
1.66 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
19: #include <assert.h>
20: #include <ctype.h>
21: #include <err.h>
22: #include <stdarg.h>
23: #include <stdlib.h>
24: #include <stdio.h>
25: #include <string.h>
26:
1.70 kristaps 27: #include "libmdoc.h"
1.1 kristaps 28:
1.41 kristaps 29: /*
30: * Main caller in the libmdoc library. This begins the parsing routine,
31: * handles allocation of data, and so forth. Most of the "work" is done
1.68 kristaps 32: * in macro.c, validate.c and action.c.
1.41 kristaps 33: */
34:
1.1 kristaps 35: const char *const __mdoc_macronames[MDOC_MAX] = {
36: "\\\"", "Dd", "Dt", "Os",
37: "Sh", "Ss", "Pp", "D1",
38: "Dl", "Bd", "Ed", "Bl",
39: "El", "It", "Ad", "An",
40: "Ar", "Cd", "Cm", "Dv",
41: "Er", "Ev", "Ex", "Fa",
42: "Fd", "Fl", "Fn", "Ft",
43: "Ic", "In", "Li", "Nd",
44: "Nm", "Op", "Ot", "Pa",
45: "Rv", "St", "Va", "Vt",
46: /* LINTED */
47: "Xr", "\%A", "\%B", "\%D",
48: /* LINTED */
49: "\%I", "\%J", "\%N", "\%O",
50: /* LINTED */
51: "\%P", "\%R", "\%T", "\%V",
52: "Ac", "Ao", "Aq", "At",
53: "Bc", "Bf", "Bo", "Bq",
54: "Bsx", "Bx", "Db", "Dc",
55: "Do", "Dq", "Ec", "Ef",
56: "Em", "Eo", "Fx", "Ms",
57: "No", "Ns", "Nx", "Ox",
58: "Pc", "Pf", "Po", "Pq",
59: "Qc", "Ql", "Qo", "Qq",
60: "Re", "Rs", "Sc", "So",
61: "Sq", "Sm", "Sx", "Sy",
62: "Tn", "Ux", "Xc", "Xo",
63: "Fo", "Fc", "Oo", "Oc",
64: "Bk", "Ek", "Bt", "Hf",
1.57 kristaps 65: "Fr", "Ud", "Lb", "Ap",
1.61 kristaps 66: "Lp", "Lk", "Mt", "Brq",
1.64 kristaps 67: /* LINTED */
1.65 kristaps 68: "Bro", "Brc", "\%C", "Es",
1.69 kristaps 69: /* LINTED */
70: "En", "Dx", "\%Q"
1.1 kristaps 71: };
72:
73: const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
74: "split", "nosplit", "ragged",
75: "unfilled", "literal", "file",
76: "offset", "bullet", "dash",
77: "hyphen", "item", "enum",
78: "tag", "diag", "hang",
79: "ohang", "inset", "column",
80: "width", "compact", "std",
1.52 kristaps 81: "filled", "words", "emphasis",
1.64 kristaps 82: "symbolic", "nested"
1.1 kristaps 83: };
84:
85: const char * const *mdoc_macronames = __mdoc_macronames;
86: const char * const *mdoc_argnames = __mdoc_argnames;
87:
1.71 ! kristaps 88: /* FIXME: have this accept line/pos/tok. */
! 89: /* FIXME: mdoc_alloc1 and mdoc_free1 like in man.c. */
! 90: static struct mdoc_node *mdoc_node_alloc(const struct mdoc *);
! 91: static int mdoc_node_append(struct mdoc *,
! 92: struct mdoc_node *);
! 93:
! 94: static int parsetext(struct mdoc *, int, char *);
! 95: static int parsemacro(struct mdoc *, int, char *);
! 96: static int macrowarn(struct mdoc *, int, const char *);
! 97:
1.45 kristaps 98:
1.68 kristaps 99: /*
100: * Get the first (root) node of the parse tree.
101: */
1.1 kristaps 102: const struct mdoc_node *
1.71 ! kristaps 103: mdoc_node(const struct mdoc *m)
1.1 kristaps 104: {
105:
1.71 ! kristaps 106: return(MDOC_HALT & m->flags ? NULL : m->first);
1.1 kristaps 107: }
108:
109:
1.37 kristaps 110: const struct mdoc_meta *
1.71 ! kristaps 111: mdoc_meta(const struct mdoc *m)
1.37 kristaps 112: {
113:
1.71 ! kristaps 114: return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37 kristaps 115: }
116:
117:
1.68 kristaps 118: /*
1.70 kristaps 119: * Free up all resources contributed by a parse: the node tree,
120: * meta-data and so on. Then reallocate the root node for another
121: * parse.
1.68 kristaps 122: */
1.1 kristaps 123: void
1.67 kristaps 124: mdoc_reset(struct mdoc *mdoc)
125: {
126:
127: if (mdoc->first)
128: mdoc_node_freelist(mdoc->first);
129: if (mdoc->meta.title)
130: free(mdoc->meta.title);
131: if (mdoc->meta.os)
132: free(mdoc->meta.os);
133: if (mdoc->meta.name)
134: free(mdoc->meta.name);
135: if (mdoc->meta.arch)
136: free(mdoc->meta.arch);
137: if (mdoc->meta.vol)
138: free(mdoc->meta.vol);
139:
140: bzero(&mdoc->meta, sizeof(struct mdoc_meta));
141: mdoc->flags = 0;
142: mdoc->lastnamed = mdoc->lastsec = 0;
1.70 kristaps 143: mdoc->last = calloc(1, sizeof(struct mdoc_node));
144: if (NULL == mdoc->last)
145: err(1, "calloc");
146: mdoc->first = mdoc->last;
1.67 kristaps 147: mdoc->last->type = MDOC_ROOT;
148: mdoc->next = MDOC_NEXT_CHILD;
149: }
150:
151:
1.68 kristaps 152: /*
153: * Completely free up all resources.
154: */
1.67 kristaps 155: void
1.38 kristaps 156: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 157: {
158:
1.38 kristaps 159: if (mdoc->first)
160: mdoc_node_freelist(mdoc->first);
1.34 kristaps 161: if (mdoc->meta.title)
162: free(mdoc->meta.title);
163: if (mdoc->meta.os)
164: free(mdoc->meta.os);
165: if (mdoc->meta.name)
166: free(mdoc->meta.name);
1.52 kristaps 167: if (mdoc->meta.arch)
168: free(mdoc->meta.arch);
169: if (mdoc->meta.vol)
170: free(mdoc->meta.vol);
1.34 kristaps 171:
1.68 kristaps 172: if (mdoc->htab)
173: mdoc_tokhash_free(mdoc->htab);
174:
1.1 kristaps 175: free(mdoc);
176: }
177:
178:
179: struct mdoc *
1.55 kristaps 180: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1 kristaps 181: {
182: struct mdoc *p;
183:
1.70 kristaps 184: if (NULL == (p = calloc(1, sizeof(struct mdoc))))
185: err(1, "calloc");
1.1 kristaps 186:
187: p->data = data;
1.33 kristaps 188: if (cb)
189: (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1 kristaps 190:
1.70 kristaps 191: if (NULL == (p->first = calloc(1, sizeof(struct mdoc_node))))
192: err(1, "calloc");
193: p->last = p->first;
1.25 kristaps 194: p->last->type = MDOC_ROOT;
1.55 kristaps 195: p->pflags = pflags;
1.25 kristaps 196: p->next = MDOC_NEXT_CHILD;
1.4 kristaps 197: p->htab = mdoc_tokhash_alloc();
1.1 kristaps 198: return(p);
199: }
200:
201:
1.68 kristaps 202: /*
203: * Climb back up the parse tree, validating open scopes. Mostly calls
204: * through to macro_end in macro.c.
205: */
1.1 kristaps 206: int
1.20 kristaps 207: mdoc_endparse(struct mdoc *mdoc)
208: {
209:
210: if (MDOC_HALT & mdoc->flags)
211: return(0);
212: if (NULL == mdoc->first)
213: return(1);
214:
215: assert(mdoc->last);
216: if ( ! macro_end(mdoc)) {
217: mdoc->flags |= MDOC_HALT;
218: return(0);
219: }
220: return(1);
221: }
222:
223:
1.50 kristaps 224: /*
1.53 kristaps 225: * Main parse routine. Parses a single line -- really just hands off to
226: * the macro or text parser.
1.50 kristaps 227: */
1.20 kristaps 228: int
1.53 kristaps 229: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 230: {
231:
1.53 kristaps 232: /* If in error-mode, then we parse no more. */
1.50 kristaps 233:
1.53 kristaps 234: if (MDOC_HALT & m->flags)
1.20 kristaps 235: return(0);
1.50 kristaps 236:
1.53 kristaps 237: return('.' == *buf ? parsemacro(m, ln, buf) :
238: parsetext(m, ln, buf));
1.1 kristaps 239: }
240:
241:
242: void
1.31 kristaps 243: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1 kristaps 244: {
1.31 kristaps 245: char buf[256];
1.23 kristaps 246: va_list ap;
1.1 kristaps 247:
248: if (NULL == mdoc->cb.mdoc_msg)
249: return;
250:
251: va_start(ap, fmt);
1.31 kristaps 252: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.1 kristaps 253: va_end(ap);
1.31 kristaps 254: (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
1.1 kristaps 255: }
256:
257:
258: int
1.31 kristaps 259: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
260: const char *fmt, ...)
1.1 kristaps 261: {
1.31 kristaps 262: char buf[256];
263: va_list ap;
1.1 kristaps 264:
265: if (NULL == mdoc->cb.mdoc_err)
266: return(0);
1.31 kristaps 267:
268: va_start(ap, fmt);
269: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
270: va_end(ap);
271: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 272: }
273:
274:
275: int
1.31 kristaps 276: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
277: enum mdoc_warn type, const char *fmt, ...)
1.1 kristaps 278: {
1.31 kristaps 279: char buf[256];
280: va_list ap;
1.1 kristaps 281:
282: if (NULL == mdoc->cb.mdoc_warn)
283: return(0);
1.31 kristaps 284:
285: va_start(ap, fmt);
286: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
287: va_end(ap);
288: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1 kristaps 289: }
290:
291:
292: int
1.53 kristaps 293: mdoc_macro(struct mdoc *m, int tok,
294: int ln, int pp, int *pos, char *buf)
1.1 kristaps 295: {
296:
1.53 kristaps 297: /* FIXME - these should happen during validation. */
1.31 kristaps 298:
1.44 kristaps 299: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.53 kristaps 300: SEC_PROLOGUE != m->lastnamed)
301: return(mdoc_perr(m, ln, pp,
302: "disallowed in document body"));
303:
1.44 kristaps 304: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.53 kristaps 305: SEC_PROLOGUE == m->lastnamed)
306: return(mdoc_perr(m, ln, pp,
307: "disallowed in prologue"));
308:
309: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.64 kristaps 310: return(mdoc_perr(m, ln, pp, "%s not callable",
311: mdoc_macronames[tok]));
1.53 kristaps 312:
313: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1 kristaps 314: }
315:
316:
1.23 kristaps 317: static int
318: mdoc_node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 319: {
320:
1.25 kristaps 321: assert(mdoc->last);
322: assert(mdoc->first);
323: assert(MDOC_ROOT != p->type);
1.1 kristaps 324:
1.13 kristaps 325: switch (mdoc->next) {
326: case (MDOC_NEXT_SIBLING):
1.6 kristaps 327: mdoc->last->next = p;
328: p->prev = mdoc->last;
1.13 kristaps 329: p->parent = mdoc->last->parent;
1.1 kristaps 330: break;
1.13 kristaps 331: case (MDOC_NEXT_CHILD):
332: mdoc->last->child = p;
1.1 kristaps 333: p->parent = mdoc->last;
334: break;
335: default:
1.13 kristaps 336: abort();
337: /* NOTREACHED */
1.1 kristaps 338: }
339:
1.23 kristaps 340: if ( ! mdoc_valid_pre(mdoc, p))
341: return(0);
1.68 kristaps 342: if ( ! mdoc_action_pre(mdoc, p))
343: return(0);
1.27 kristaps 344:
345: switch (p->type) {
346: case (MDOC_HEAD):
347: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 348: p->parent->head = p;
1.27 kristaps 349: break;
350: case (MDOC_TAIL):
351: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 352: p->parent->tail = p;
1.27 kristaps 353: break;
354: case (MDOC_BODY):
355: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 356: p->parent->body = p;
1.27 kristaps 357: break;
358: default:
359: break;
360: }
361:
1.1 kristaps 362: mdoc->last = p;
1.71 ! kristaps 363:
! 364: switch (p->type) {
! 365: case (MDOC_TEXT):
! 366: if ( ! mdoc_valid_post(mdoc))
! 367: return(0);
! 368: if ( ! mdoc_action_post(mdoc))
! 369: return(0);
! 370: break;
! 371: default:
! 372: break;
! 373: }
! 374:
1.23 kristaps 375: return(1);
1.1 kristaps 376: }
377:
378:
1.45 kristaps 379: static struct mdoc_node *
1.46 kristaps 380: mdoc_node_alloc(const struct mdoc *mdoc)
1.45 kristaps 381: {
1.46 kristaps 382: struct mdoc_node *p;
383:
1.70 kristaps 384: if (NULL == (p = calloc(1, sizeof(struct mdoc_node))))
385: err(1, "calloc");
1.46 kristaps 386: p->sec = mdoc->lastsec;
1.45 kristaps 387:
1.46 kristaps 388: return(p);
1.45 kristaps 389: }
390:
391:
1.23 kristaps 392: int
1.22 kristaps 393: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17 kristaps 394: {
395: struct mdoc_node *p;
396:
397: assert(mdoc->first);
398: assert(mdoc->last);
399:
1.46 kristaps 400: p = mdoc_node_alloc(mdoc);
1.17 kristaps 401:
1.22 kristaps 402: p->line = line;
403: p->pos = pos;
1.17 kristaps 404: p->type = MDOC_TAIL;
1.27 kristaps 405: p->tok = tok;
1.17 kristaps 406:
1.23 kristaps 407: return(mdoc_node_append(mdoc, p));
1.17 kristaps 408: }
409:
410:
1.23 kristaps 411: int
1.22 kristaps 412: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 413: {
414: struct mdoc_node *p;
415:
416: assert(mdoc->first);
417: assert(mdoc->last);
418:
1.46 kristaps 419: p = mdoc_node_alloc(mdoc);
1.13 kristaps 420:
1.22 kristaps 421: p->line = line;
422: p->pos = pos;
1.1 kristaps 423: p->type = MDOC_HEAD;
1.27 kristaps 424: p->tok = tok;
1.1 kristaps 425:
1.23 kristaps 426: return(mdoc_node_append(mdoc, p));
1.1 kristaps 427: }
428:
429:
1.23 kristaps 430: int
1.22 kristaps 431: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 432: {
433: struct mdoc_node *p;
434:
435: assert(mdoc->first);
436: assert(mdoc->last);
437:
1.46 kristaps 438: p = mdoc_node_alloc(mdoc);
1.1 kristaps 439:
1.22 kristaps 440: p->line = line;
441: p->pos = pos;
1.1 kristaps 442: p->type = MDOC_BODY;
1.27 kristaps 443: p->tok = tok;
1.1 kristaps 444:
1.23 kristaps 445: return(mdoc_node_append(mdoc, p));
1.1 kristaps 446: }
447:
448:
1.23 kristaps 449: int
1.22 kristaps 450: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 451: int tok, struct mdoc_arg *args)
1.1 kristaps 452: {
453: struct mdoc_node *p;
454:
1.46 kristaps 455: p = mdoc_node_alloc(mdoc);
1.1 kristaps 456:
1.22 kristaps 457: p->pos = pos;
458: p->line = line;
1.1 kristaps 459: p->type = MDOC_BLOCK;
1.27 kristaps 460: p->tok = tok;
1.53 kristaps 461: p->args = args;
462:
463: if (args)
464: (args->refcnt)++;
1.1 kristaps 465:
1.23 kristaps 466: return(mdoc_node_append(mdoc, p));
1.1 kristaps 467: }
468:
469:
1.23 kristaps 470: int
1.22 kristaps 471: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 472: int tok, struct mdoc_arg *args)
1.1 kristaps 473: {
474: struct mdoc_node *p;
475:
1.46 kristaps 476: p = mdoc_node_alloc(mdoc);
1.22 kristaps 477:
478: p->line = line;
479: p->pos = pos;
1.1 kristaps 480: p->type = MDOC_ELEM;
1.27 kristaps 481: p->tok = tok;
1.53 kristaps 482: p->args = args;
483:
484: if (args)
485: (args->refcnt)++;
1.1 kristaps 486:
1.23 kristaps 487: return(mdoc_node_append(mdoc, p));
1.1 kristaps 488: }
489:
490:
1.23 kristaps 491: int
1.22 kristaps 492: mdoc_word_alloc(struct mdoc *mdoc,
493: int line, int pos, const char *word)
1.1 kristaps 494: {
495: struct mdoc_node *p;
496:
1.46 kristaps 497: p = mdoc_node_alloc(mdoc);
1.45 kristaps 498:
1.22 kristaps 499: p->line = line;
500: p->pos = pos;
1.1 kristaps 501: p->type = MDOC_TEXT;
1.70 kristaps 502: if (NULL == (p->string = strdup(word)))
503: err(1, "strdup");
1.1 kristaps 504:
1.23 kristaps 505: return(mdoc_node_append(mdoc, p));
1.1 kristaps 506: }
507:
508:
1.53 kristaps 509: void
510: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 511: {
512:
1.53 kristaps 513: if (p->string)
514: free(p->string);
515: if (p->args)
516: mdoc_argv_free(p->args);
1.1 kristaps 517: free(p);
518: }
519:
520:
1.53 kristaps 521: void
522: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 523: {
524:
1.53 kristaps 525: if (p->child)
526: mdoc_node_freelist(p->child);
527: if (p->next)
528: mdoc_node_freelist(p->next);
1.1 kristaps 529:
1.53 kristaps 530: mdoc_node_free(p);
1.1 kristaps 531: }
532:
533:
1.53 kristaps 534: /*
535: * Parse free-form text, that is, a line that does not begin with the
536: * control character.
537: */
538: static int
1.68 kristaps 539: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 540: {
541:
1.68 kristaps 542: if (SEC_PROLOGUE == m->lastnamed)
543: return(mdoc_perr(m, line, 0,
1.53 kristaps 544: "text disallowed in prologue"));
1.1 kristaps 545:
1.68 kristaps 546: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
547: return(mdoc_perr(m, line, 0,
548: "blank lines only in literal context"));
549:
550: if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53 kristaps 551: return(0);
1.1 kristaps 552:
1.68 kristaps 553: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 554: return(1);
1.1 kristaps 555: }
556:
557:
1.58 kristaps 558: static int
559: macrowarn(struct mdoc *m, int ln, const char *buf)
560: {
561: if ( ! (MDOC_IGN_MACRO & m->pflags))
562: return(mdoc_perr(m, ln, 1, "unknown macro: %s%s",
1.59 kristaps 563: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 564: return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
565: "unknown macro: %s%s",
1.59 kristaps 566: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 567: }
568:
569:
570:
1.53 kristaps 571: /*
572: * Parse a macro line, that is, a line beginning with the control
573: * character.
574: */
575: int
576: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 577: {
1.53 kristaps 578: int i, c;
579: char mac[5];
1.1 kristaps 580:
1.63 kristaps 581: /* Comments and empties are quickly ignored. */
582:
583: if (0 == buf[1])
584: return(1);
585:
1.65 kristaps 586: if (' ' == buf[1]) {
1.63 kristaps 587: i = 2;
1.65 kristaps 588: while (buf[i] && ' ' == buf[i])
1.63 kristaps 589: i++;
590: if (0 == buf[i])
591: return(1);
592: return(mdoc_perr(m, ln, 1, "invalid syntax"));
593: }
1.1 kristaps 594:
1.53 kristaps 595: if (buf[1] && '\\' == buf[1])
596: if (buf[2] && '\"' == buf[2])
597: return(1);
1.1 kristaps 598:
1.53 kristaps 599: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 600:
1.53 kristaps 601: for (i = 1; i < 5; i++) {
602: if (0 == (mac[i - 1] = buf[i]))
603: break;
1.65 kristaps 604: else if (' ' == buf[i])
1.53 kristaps 605: break;
606: }
1.1 kristaps 607:
1.53 kristaps 608: mac[i - 1] = 0;
1.1 kristaps 609:
1.53 kristaps 610: if (i == 5 || i <= 2) {
1.58 kristaps 611: if ( ! macrowarn(m, ln, mac))
612: goto err;
613: return(1);
1.53 kristaps 614: }
615:
616: if (MDOC_MAX == (c = mdoc_tokhash_find(m->htab, mac))) {
1.58 kristaps 617: if ( ! macrowarn(m, ln, mac))
618: goto err;
619: return(1);
1.53 kristaps 620: }
1.1 kristaps 621:
1.53 kristaps 622: /* The macro is sane. Jump to the next word. */
1.1 kristaps 623:
1.65 kristaps 624: while (buf[i] && ' ' == buf[i])
1.53 kristaps 625: i++;
1.1 kristaps 626:
1.53 kristaps 627: /* Begin recursive parse sequence. */
1.1 kristaps 628:
1.53 kristaps 629: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
630: goto err;
1.1 kristaps 631:
1.53 kristaps 632: return(1);
1.1 kristaps 633:
1.53 kristaps 634: err: /* Error out. */
1.1 kristaps 635:
1.53 kristaps 636: m->flags |= MDOC_HALT;
637: return(0);
1.1 kristaps 638: }
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