Annotation of mandoc/mdoc.c, Revision 1.80
1.80 ! kristaps 1: /* $Id: mdoc.c,v 1.79 2009/06/15 10:02:53 kristaps Exp $ */
1.1 kristaps 2: /*
1.76 kristaps 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
1.75 kristaps 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: *
1.75 kristaps 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>
1.73 kristaps 20: #include <stdio.h>
1.1 kristaps 21: #include <stdlib.h>
22: #include <string.h>
23:
1.70 kristaps 24: #include "libmdoc.h"
1.1 kristaps 25:
1.73 kristaps 26: enum merr {
27: ENOCALL,
28: EBODYPROL,
29: EPROLBODY,
30: ESPACE,
31: ETEXTPROL,
32: ENOBLANK,
33: EMALLOC
34: };
1.41 kristaps 35:
1.1 kristaps 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",
1.57 kristaps 66: "Fr", "Ud", "Lb", "Ap",
1.61 kristaps 67: "Lp", "Lk", "Mt", "Brq",
1.64 kristaps 68: /* LINTED */
1.65 kristaps 69: "Bro", "Brc", "\%C", "Es",
1.69 kristaps 70: /* LINTED */
71: "En", "Dx", "\%Q"
1.1 kristaps 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",
1.52 kristaps 82: "filled", "words", "emphasis",
1.64 kristaps 83: "symbolic", "nested"
1.1 kristaps 84: };
85:
86: const char * const *mdoc_macronames = __mdoc_macronames;
87: const char * const *mdoc_argnames = __mdoc_argnames;
88:
1.73 kristaps 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 *,
1.71 kristaps 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 *);
1.73 kristaps 98: static int perr(struct mdoc *, int, int, enum merr);
1.71 kristaps 99:
1.73 kristaps 100: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
1.45 kristaps 101:
1.68 kristaps 102: /*
103: * Get the first (root) node of the parse tree.
104: */
1.1 kristaps 105: const struct mdoc_node *
1.71 kristaps 106: mdoc_node(const struct mdoc *m)
1.1 kristaps 107: {
108:
1.71 kristaps 109: return(MDOC_HALT & m->flags ? NULL : m->first);
1.1 kristaps 110: }
111:
112:
1.37 kristaps 113: const struct mdoc_meta *
1.71 kristaps 114: mdoc_meta(const struct mdoc *m)
1.37 kristaps 115: {
116:
1.71 kristaps 117: return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37 kristaps 118: }
119:
120:
1.73 kristaps 121: static void
122: mdoc_free1(struct mdoc *mdoc)
1.67 kristaps 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);
1.73 kristaps 137: }
138:
139:
140: static int
141: mdoc_alloc1(struct mdoc *mdoc)
142: {
1.67 kristaps 143:
144: bzero(&mdoc->meta, sizeof(struct mdoc_meta));
145: mdoc->flags = 0;
146: mdoc->lastnamed = mdoc->lastsec = 0;
1.70 kristaps 147: mdoc->last = calloc(1, sizeof(struct mdoc_node));
148: if (NULL == mdoc->last)
1.73 kristaps 149: return(0);
150:
1.70 kristaps 151: mdoc->first = mdoc->last;
1.67 kristaps 152: mdoc->last->type = MDOC_ROOT;
153: mdoc->next = MDOC_NEXT_CHILD;
1.73 kristaps 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));
1.67 kristaps 169: }
170:
171:
1.68 kristaps 172: /*
173: * Completely free up all resources.
174: */
1.67 kristaps 175: void
1.38 kristaps 176: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 177: {
178:
1.73 kristaps 179: mdoc_free1(mdoc);
1.68 kristaps 180: if (mdoc->htab)
1.74 kristaps 181: mdoc_hash_free(mdoc->htab);
1.1 kristaps 182: free(mdoc);
183: }
184:
185:
186: struct mdoc *
1.55 kristaps 187: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1 kristaps 188: {
189: struct mdoc *p;
190:
1.70 kristaps 191: if (NULL == (p = calloc(1, sizeof(struct mdoc))))
1.73 kristaps 192: return(NULL);
1.74 kristaps 193: if (cb)
194: (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1 kristaps 195:
196: p->data = data;
1.73 kristaps 197: p->pflags = pflags;
198:
1.74 kristaps 199: if (NULL == (p->htab = mdoc_hash_alloc())) {
200: free(p);
201: return(NULL);
202: } else if (mdoc_alloc1(p))
203: return(p);
1.1 kristaps 204:
1.73 kristaps 205: free(p);
206: return(NULL);
1.1 kristaps 207: }
208:
209:
1.68 kristaps 210: /*
211: * Climb back up the parse tree, validating open scopes. Mostly calls
212: * through to macro_end in macro.c.
213: */
1.1 kristaps 214: int
1.72 kristaps 215: mdoc_endparse(struct mdoc *m)
1.20 kristaps 216: {
217:
1.72 kristaps 218: if (MDOC_HALT & m->flags)
1.20 kristaps 219: return(0);
1.72 kristaps 220: else if (mdoc_macroend(m))
1.20 kristaps 221: return(1);
1.72 kristaps 222: m->flags |= MDOC_HALT;
223: return(0);
1.20 kristaps 224: }
225:
226:
1.50 kristaps 227: /*
1.53 kristaps 228: * Main parse routine. Parses a single line -- really just hands off to
229: * the macro or text parser.
1.50 kristaps 230: */
1.20 kristaps 231: int
1.53 kristaps 232: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 233: {
234:
1.53 kristaps 235: /* If in error-mode, then we parse no more. */
1.50 kristaps 236:
1.53 kristaps 237: if (MDOC_HALT & m->flags)
1.20 kristaps 238: return(0);
1.50 kristaps 239:
1.53 kristaps 240: return('.' == *buf ? parsemacro(m, ln, buf) :
241: parsetext(m, ln, buf));
1.1 kristaps 242: }
243:
244:
245: int
1.31 kristaps 246: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
247: const char *fmt, ...)
1.1 kristaps 248: {
1.31 kristaps 249: char buf[256];
250: va_list ap;
1.1 kristaps 251:
252: if (NULL == mdoc->cb.mdoc_err)
253: return(0);
1.31 kristaps 254:
255: va_start(ap, fmt);
256: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
257: va_end(ap);
258: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 259: }
260:
261:
262: int
1.31 kristaps 263: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
264: enum mdoc_warn type, const char *fmt, ...)
1.1 kristaps 265: {
1.31 kristaps 266: char buf[256];
267: va_list ap;
1.1 kristaps 268:
269: if (NULL == mdoc->cb.mdoc_warn)
270: return(0);
1.31 kristaps 271:
272: va_start(ap, fmt);
273: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
274: va_end(ap);
275: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1 kristaps 276: }
277:
278:
279: int
1.78 kristaps 280: mdoc_nerr(struct mdoc *mdoc, const struct mdoc_node *node, const char *fmt, ...)
281: {
282: char buf[256];
283: va_list ap;
284:
285: if (NULL == mdoc->cb.mdoc_err)
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_err)(mdoc->data, node->line, node->pos, buf));
292: }
293:
294:
295: int
296: mdoc_warn(struct mdoc *mdoc, enum mdoc_warn type, const char *fmt, ...)
297: {
298: char buf[256];
299: va_list ap;
300:
301: if (NULL == mdoc->cb.mdoc_warn)
302: return(0);
303:
304: va_start(ap, fmt);
305: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
306: va_end(ap);
307: return((*mdoc->cb.mdoc_warn)(mdoc->data, mdoc->last->line,
308: mdoc->last->pos, type, buf));
309: }
310:
311:
312: int
313: mdoc_err(struct mdoc *mdoc, 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, mdoc->last->line,
325: mdoc->last->pos, buf));
326: }
327:
328:
329: int
330: mdoc_pwarn(struct mdoc *mdoc, int line, int pos, enum mdoc_warn type,
331: const char *fmt, ...)
332: {
333: char buf[256];
334: va_list ap;
335:
336: if (NULL == mdoc->cb.mdoc_warn)
337: return(0);
338:
339: va_start(ap, fmt);
340: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
341: va_end(ap);
342: return((*mdoc->cb.mdoc_warn)(mdoc->data, line, pos, type, buf));
343: }
344:
345: int
346: mdoc_perr(struct mdoc *mdoc, int line, int pos, 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, line, pos, buf));
358: }
359:
360:
361: int
1.53 kristaps 362: mdoc_macro(struct mdoc *m, int tok,
363: int ln, int pp, int *pos, char *buf)
1.1 kristaps 364: {
365:
1.53 kristaps 366: /* FIXME - these should happen during validation. */
1.31 kristaps 367:
1.44 kristaps 368: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.53 kristaps 369: SEC_PROLOGUE != m->lastnamed)
1.73 kristaps 370: return(perr(m, ln, pp, EPROLBODY));
1.53 kristaps 371:
1.44 kristaps 372: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.53 kristaps 373: SEC_PROLOGUE == m->lastnamed)
1.73 kristaps 374: return(perr(m, ln, pp, EBODYPROL));
1.53 kristaps 375:
376: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.73 kristaps 377: return(perr(m, ln, pp, ENOCALL));
1.53 kristaps 378:
379: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1 kristaps 380: }
381:
382:
1.23 kristaps 383: static int
1.73 kristaps 384: perr(struct mdoc *m, int line, int pos, enum merr type)
385: {
386: char *p;
387:
388: p = NULL;
389: switch (type) {
390: case (ENOCALL):
391: p = "not callable";
392: break;
393: case (EPROLBODY):
394: p = "macro disallowed in document body";
395: break;
396: case (EBODYPROL):
397: p = "macro disallowed in document prologue";
398: break;
399: case (EMALLOC):
400: p = "memory exhausted";
401: break;
402: case (ETEXTPROL):
403: p = "text disallowed in document prologue";
404: break;
405: case (ENOBLANK):
406: p = "blank lines disallowed in non-literal contexts";
407: break;
408: case (ESPACE):
409: p = "whitespace disallowed after delimiter";
410: break;
411: }
412: assert(p);
413: return(mdoc_perr(m, line, pos, p));
414: }
415:
416:
417: static int
418: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 419: {
420:
1.25 kristaps 421: assert(mdoc->last);
422: assert(mdoc->first);
423: assert(MDOC_ROOT != p->type);
1.1 kristaps 424:
1.13 kristaps 425: switch (mdoc->next) {
426: case (MDOC_NEXT_SIBLING):
1.6 kristaps 427: mdoc->last->next = p;
428: p->prev = mdoc->last;
1.13 kristaps 429: p->parent = mdoc->last->parent;
1.1 kristaps 430: break;
1.13 kristaps 431: case (MDOC_NEXT_CHILD):
432: mdoc->last->child = p;
1.1 kristaps 433: p->parent = mdoc->last;
434: break;
435: default:
1.13 kristaps 436: abort();
437: /* NOTREACHED */
1.1 kristaps 438: }
439:
1.23 kristaps 440: if ( ! mdoc_valid_pre(mdoc, p))
441: return(0);
1.68 kristaps 442: if ( ! mdoc_action_pre(mdoc, p))
443: return(0);
1.27 kristaps 444:
445: switch (p->type) {
446: case (MDOC_HEAD):
447: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 448: p->parent->head = p;
1.27 kristaps 449: break;
450: case (MDOC_TAIL):
451: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 452: p->parent->tail = p;
1.27 kristaps 453: break;
454: case (MDOC_BODY):
455: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 456: p->parent->body = p;
1.27 kristaps 457: break;
458: default:
459: break;
460: }
461:
1.1 kristaps 462: mdoc->last = p;
1.71 kristaps 463:
464: switch (p->type) {
465: case (MDOC_TEXT):
466: if ( ! mdoc_valid_post(mdoc))
467: return(0);
468: if ( ! mdoc_action_post(mdoc))
469: return(0);
470: break;
471: default:
472: break;
473: }
474:
1.23 kristaps 475: return(1);
1.1 kristaps 476: }
477:
478:
1.45 kristaps 479: static struct mdoc_node *
1.73 kristaps 480: node_alloc(struct mdoc *mdoc, int line,
481: int pos, int tok, enum mdoc_type type)
1.45 kristaps 482: {
1.46 kristaps 483: struct mdoc_node *p;
484:
1.73 kristaps 485: if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
486: (void)verr(mdoc, EMALLOC);
487: return(NULL);
488: }
489:
1.46 kristaps 490: p->sec = mdoc->lastsec;
1.73 kristaps 491: p->line = line;
492: p->pos = pos;
493: p->tok = tok;
494: if (MDOC_TEXT != (p->type = type))
495: assert(p->tok >= 0);
1.45 kristaps 496:
1.46 kristaps 497: return(p);
1.45 kristaps 498: }
499:
500:
1.23 kristaps 501: int
1.22 kristaps 502: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17 kristaps 503: {
504: struct mdoc_node *p;
505:
1.73 kristaps 506: p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
507: if (NULL == p)
508: return(0);
509: return(node_append(mdoc, p));
1.17 kristaps 510: }
511:
512:
1.23 kristaps 513: int
1.22 kristaps 514: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 515: {
516: struct mdoc_node *p;
517:
518: assert(mdoc->first);
519: assert(mdoc->last);
520:
1.73 kristaps 521: p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
522: if (NULL == p)
523: return(0);
524: return(node_append(mdoc, p));
1.1 kristaps 525: }
526:
527:
1.23 kristaps 528: int
1.22 kristaps 529: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 530: {
531: struct mdoc_node *p;
532:
1.73 kristaps 533: p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
534: if (NULL == p)
535: return(0);
536: return(node_append(mdoc, p));
1.1 kristaps 537: }
538:
539:
1.23 kristaps 540: int
1.22 kristaps 541: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 542: int tok, struct mdoc_arg *args)
1.1 kristaps 543: {
544: struct mdoc_node *p;
545:
1.73 kristaps 546: p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
547: if (NULL == p)
548: return(0);
1.77 kristaps 549: p->args = args;
550: if (p->args)
1.53 kristaps 551: (args->refcnt)++;
1.73 kristaps 552: return(node_append(mdoc, p));
1.1 kristaps 553: }
554:
555:
1.23 kristaps 556: int
1.22 kristaps 557: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 558: int tok, struct mdoc_arg *args)
1.1 kristaps 559: {
560: struct mdoc_node *p;
561:
1.73 kristaps 562: p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
563: if (NULL == p)
564: return(0);
1.77 kristaps 565: p->args = args;
566: if (p->args)
1.53 kristaps 567: (args->refcnt)++;
1.73 kristaps 568: return(node_append(mdoc, p));
1.1 kristaps 569: }
570:
571:
1.23 kristaps 572: int
1.22 kristaps 573: mdoc_word_alloc(struct mdoc *mdoc,
574: int line, int pos, const char *word)
1.1 kristaps 575: {
576: struct mdoc_node *p;
577:
1.73 kristaps 578: p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
579: if (NULL == p)
580: return(0);
581: if (NULL == (p->string = strdup(word))) {
582: (void)verr(mdoc, EMALLOC);
583: return(0);
584: }
585: return(node_append(mdoc, p));
1.1 kristaps 586: }
587:
588:
1.53 kristaps 589: void
590: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 591: {
592:
1.53 kristaps 593: if (p->string)
594: free(p->string);
595: if (p->args)
596: mdoc_argv_free(p->args);
1.1 kristaps 597: free(p);
598: }
599:
600:
1.53 kristaps 601: void
602: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 603: {
604:
1.53 kristaps 605: if (p->child)
606: mdoc_node_freelist(p->child);
607: if (p->next)
608: mdoc_node_freelist(p->next);
1.1 kristaps 609:
1.53 kristaps 610: mdoc_node_free(p);
1.1 kristaps 611: }
612:
613:
1.53 kristaps 614: /*
615: * Parse free-form text, that is, a line that does not begin with the
616: * control character.
617: */
618: static int
1.68 kristaps 619: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 620: {
621:
1.68 kristaps 622: if (SEC_PROLOGUE == m->lastnamed)
1.73 kristaps 623: return(perr(m, line, 0, ETEXTPROL));
1.1 kristaps 624:
1.68 kristaps 625: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
1.73 kristaps 626: return(perr(m, line, 0, ENOBLANK));
1.68 kristaps 627:
628: if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53 kristaps 629: return(0);
1.1 kristaps 630:
1.68 kristaps 631: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 632: return(1);
1.1 kristaps 633: }
634:
635:
1.58 kristaps 636: static int
637: macrowarn(struct mdoc *m, int ln, const char *buf)
638: {
639: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.73 kristaps 640: return(mdoc_perr(m, ln, 1,
641: "unknown macro: %s%s",
1.59 kristaps 642: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 643: return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
644: "unknown macro: %s%s",
1.59 kristaps 645: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 646: }
647:
648:
649:
1.53 kristaps 650: /*
651: * Parse a macro line, that is, a line beginning with the control
652: * character.
653: */
654: int
655: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 656: {
1.53 kristaps 657: int i, c;
658: char mac[5];
1.1 kristaps 659:
1.63 kristaps 660: /* Comments and empties are quickly ignored. */
661:
662: if (0 == buf[1])
663: return(1);
664:
1.65 kristaps 665: if (' ' == buf[1]) {
1.63 kristaps 666: i = 2;
1.65 kristaps 667: while (buf[i] && ' ' == buf[i])
1.63 kristaps 668: i++;
669: if (0 == buf[i])
670: return(1);
1.73 kristaps 671: return(perr(m, ln, 1, ESPACE));
1.63 kristaps 672: }
1.1 kristaps 673:
1.53 kristaps 674: if (buf[1] && '\\' == buf[1])
675: if (buf[2] && '\"' == buf[2])
676: return(1);
1.1 kristaps 677:
1.53 kristaps 678: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 679:
1.53 kristaps 680: for (i = 1; i < 5; i++) {
681: if (0 == (mac[i - 1] = buf[i]))
682: break;
1.65 kristaps 683: else if (' ' == buf[i])
1.53 kristaps 684: break;
685: }
1.1 kristaps 686:
1.53 kristaps 687: mac[i - 1] = 0;
1.1 kristaps 688:
1.53 kristaps 689: if (i == 5 || i <= 2) {
1.58 kristaps 690: if ( ! macrowarn(m, ln, mac))
691: goto err;
692: return(1);
1.53 kristaps 693: }
694:
1.74 kristaps 695: if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
1.58 kristaps 696: if ( ! macrowarn(m, ln, mac))
697: goto err;
698: return(1);
1.53 kristaps 699: }
1.1 kristaps 700:
1.53 kristaps 701: /* The macro is sane. Jump to the next word. */
1.1 kristaps 702:
1.65 kristaps 703: while (buf[i] && ' ' == buf[i])
1.53 kristaps 704: i++;
1.1 kristaps 705:
1.53 kristaps 706: /* Begin recursive parse sequence. */
1.1 kristaps 707:
1.53 kristaps 708: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
709: goto err;
1.1 kristaps 710:
1.53 kristaps 711: return(1);
1.1 kristaps 712:
1.53 kristaps 713: err: /* Error out. */
1.1 kristaps 714:
1.53 kristaps 715: m->flags |= MDOC_HALT;
716: return(0);
1.1 kristaps 717: }
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