Annotation of mandoc/mdoc.c, Revision 1.84
1.84 ! kristaps 1: /* $Id: mdoc.c,v 1.83 2009/06/16 20:22:23 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] = {
1.82 kristaps 37: "Ap", "Dd", "Dt", "Os",
1.1 kristaps 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",
1.82 kristaps 66: "Fr", "Ud", "Lb", "Lp",
67: "Lk", "Mt", "Brq", "Bro",
1.64 kristaps 68: /* LINTED */
1.82 kristaps 69: "Brc", "\%C", "Es", "En",
1.69 kristaps 70: /* LINTED */
1.82 kristaps 71: "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:
1.1 kristaps 100: const struct mdoc_node *
1.71 kristaps 101: mdoc_node(const struct mdoc *m)
1.1 kristaps 102: {
103:
1.71 kristaps 104: return(MDOC_HALT & m->flags ? NULL : m->first);
1.1 kristaps 105: }
106:
107:
1.37 kristaps 108: const struct mdoc_meta *
1.71 kristaps 109: mdoc_meta(const struct mdoc *m)
1.37 kristaps 110: {
111:
1.71 kristaps 112: return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37 kristaps 113: }
114:
115:
1.73 kristaps 116: static void
117: mdoc_free1(struct mdoc *mdoc)
1.67 kristaps 118: {
119:
120: if (mdoc->first)
121: mdoc_node_freelist(mdoc->first);
122: if (mdoc->meta.title)
123: free(mdoc->meta.title);
124: if (mdoc->meta.os)
125: free(mdoc->meta.os);
126: if (mdoc->meta.name)
127: free(mdoc->meta.name);
128: if (mdoc->meta.arch)
129: free(mdoc->meta.arch);
130: if (mdoc->meta.vol)
131: free(mdoc->meta.vol);
1.73 kristaps 132: }
133:
134:
135: static int
136: mdoc_alloc1(struct mdoc *mdoc)
137: {
1.67 kristaps 138:
139: bzero(&mdoc->meta, sizeof(struct mdoc_meta));
140: mdoc->flags = 0;
141: mdoc->lastnamed = mdoc->lastsec = 0;
1.70 kristaps 142: mdoc->last = calloc(1, sizeof(struct mdoc_node));
143: if (NULL == mdoc->last)
1.73 kristaps 144: return(0);
145:
1.70 kristaps 146: mdoc->first = mdoc->last;
1.67 kristaps 147: mdoc->last->type = MDOC_ROOT;
148: mdoc->next = MDOC_NEXT_CHILD;
1.73 kristaps 149: return(1);
150: }
151:
152:
153: /*
154: * Free up all resources contributed by a parse: the node tree,
155: * meta-data and so on. Then reallocate the root node for another
156: * parse.
157: */
158: int
159: mdoc_reset(struct mdoc *mdoc)
160: {
161:
162: mdoc_free1(mdoc);
163: return(mdoc_alloc1(mdoc));
1.67 kristaps 164: }
165:
166:
1.68 kristaps 167: /*
168: * Completely free up all resources.
169: */
1.67 kristaps 170: void
1.38 kristaps 171: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 172: {
173:
1.73 kristaps 174: mdoc_free1(mdoc);
1.68 kristaps 175: if (mdoc->htab)
1.74 kristaps 176: mdoc_hash_free(mdoc->htab);
1.1 kristaps 177: free(mdoc);
178: }
179:
180:
181: struct mdoc *
1.55 kristaps 182: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1 kristaps 183: {
184: struct mdoc *p;
185:
1.70 kristaps 186: if (NULL == (p = calloc(1, sizeof(struct mdoc))))
1.73 kristaps 187: return(NULL);
1.74 kristaps 188: if (cb)
189: (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1 kristaps 190:
191: p->data = data;
1.73 kristaps 192: p->pflags = pflags;
193:
1.74 kristaps 194: if (NULL == (p->htab = mdoc_hash_alloc())) {
195: free(p);
196: return(NULL);
197: } else if (mdoc_alloc1(p))
198: return(p);
1.1 kristaps 199:
1.73 kristaps 200: free(p);
201: return(NULL);
1.1 kristaps 202: }
203:
204:
1.68 kristaps 205: /*
206: * Climb back up the parse tree, validating open scopes. Mostly calls
207: * through to macro_end in macro.c.
208: */
1.1 kristaps 209: int
1.72 kristaps 210: mdoc_endparse(struct mdoc *m)
1.20 kristaps 211: {
212:
1.72 kristaps 213: if (MDOC_HALT & m->flags)
1.20 kristaps 214: return(0);
1.72 kristaps 215: else if (mdoc_macroend(m))
1.20 kristaps 216: return(1);
1.72 kristaps 217: m->flags |= MDOC_HALT;
218: return(0);
1.20 kristaps 219: }
220:
221:
1.50 kristaps 222: /*
1.53 kristaps 223: * Main parse routine. Parses a single line -- really just hands off to
224: * the macro or text parser.
1.50 kristaps 225: */
1.20 kristaps 226: int
1.53 kristaps 227: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 228: {
229:
1.53 kristaps 230: if (MDOC_HALT & m->flags)
1.20 kristaps 231: return(0);
1.50 kristaps 232:
1.53 kristaps 233: return('.' == *buf ? parsemacro(m, ln, buf) :
234: parsetext(m, ln, buf));
1.1 kristaps 235: }
236:
237:
238: int
1.31 kristaps 239: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
240: const char *fmt, ...)
1.1 kristaps 241: {
1.31 kristaps 242: char buf[256];
243: va_list ap;
1.1 kristaps 244:
245: if (NULL == mdoc->cb.mdoc_err)
246: return(0);
1.31 kristaps 247:
248: va_start(ap, fmt);
249: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
250: va_end(ap);
251: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 252: }
253:
254:
255: int
1.31 kristaps 256: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
257: enum mdoc_warn type, const char *fmt, ...)
1.1 kristaps 258: {
1.31 kristaps 259: char buf[256];
260: va_list ap;
1.1 kristaps 261:
262: if (NULL == mdoc->cb.mdoc_warn)
263: return(0);
1.31 kristaps 264:
265: va_start(ap, fmt);
266: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
267: va_end(ap);
268: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1 kristaps 269: }
270:
271:
272: int
1.84 ! kristaps 273: mdoc_nerr(struct mdoc *mdoc, const struct mdoc_node *node,
! 274: const char *fmt, ...)
1.78 kristaps 275: {
276: char buf[256];
277: va_list ap;
278:
279: if (NULL == mdoc->cb.mdoc_err)
280: return(0);
281:
282: va_start(ap, fmt);
283: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
284: va_end(ap);
1.84 ! kristaps 285: return((*mdoc->cb.mdoc_err)(mdoc->data,
! 286: node->line, node->pos, buf));
1.78 kristaps 287: }
288:
289:
290: int
1.84 ! kristaps 291: mdoc_warn(struct mdoc *mdoc, enum mdoc_warn type,
! 292: const char *fmt, ...)
1.78 kristaps 293: {
294: char buf[256];
295: va_list ap;
296:
297: if (NULL == mdoc->cb.mdoc_warn)
298: return(0);
299:
300: va_start(ap, fmt);
301: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
302: va_end(ap);
303: return((*mdoc->cb.mdoc_warn)(mdoc->data, mdoc->last->line,
1.84 ! kristaps 304: mdoc->last->pos, type, buf));
1.78 kristaps 305: }
306:
307:
308: int
309: mdoc_err(struct mdoc *mdoc, const char *fmt, ...)
310: {
311: char buf[256];
312: va_list ap;
313:
314: if (NULL == mdoc->cb.mdoc_err)
315: return(0);
316:
317: va_start(ap, fmt);
318: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
319: va_end(ap);
320: return((*mdoc->cb.mdoc_err)(mdoc->data, mdoc->last->line,
1.84 ! kristaps 321: mdoc->last->pos, buf));
1.78 kristaps 322: }
323:
324:
325: int
326: mdoc_pwarn(struct mdoc *mdoc, int line, int pos, enum mdoc_warn type,
327: const char *fmt, ...)
328: {
329: char buf[256];
330: va_list ap;
331:
332: if (NULL == mdoc->cb.mdoc_warn)
333: return(0);
334:
335: va_start(ap, fmt);
336: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
337: va_end(ap);
1.84 ! kristaps 338: return((*mdoc->cb.mdoc_warn)(mdoc->data,
! 339: line, pos, type, buf));
1.78 kristaps 340: }
341:
342: int
343: mdoc_perr(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
344: {
345: char buf[256];
346: va_list ap;
347:
348: if (NULL == mdoc->cb.mdoc_err)
349: return(0);
350:
351: va_start(ap, fmt);
352: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
353: va_end(ap);
354: return((*mdoc->cb.mdoc_err)(mdoc->data, line, pos, buf));
355: }
356:
357:
358: int
1.53 kristaps 359: mdoc_macro(struct mdoc *m, int tok,
360: int ln, int pp, int *pos, char *buf)
1.1 kristaps 361: {
362:
1.53 kristaps 363: /* FIXME - these should happen during validation. */
1.31 kristaps 364:
1.44 kristaps 365: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.53 kristaps 366: SEC_PROLOGUE != m->lastnamed)
1.73 kristaps 367: return(perr(m, ln, pp, EPROLBODY));
1.53 kristaps 368:
1.44 kristaps 369: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.53 kristaps 370: SEC_PROLOGUE == m->lastnamed)
1.73 kristaps 371: return(perr(m, ln, pp, EBODYPROL));
1.53 kristaps 372:
373: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.73 kristaps 374: return(perr(m, ln, pp, ENOCALL));
1.53 kristaps 375:
376: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1 kristaps 377: }
378:
379:
1.23 kristaps 380: static int
1.73 kristaps 381: perr(struct mdoc *m, int line, int pos, enum merr type)
382: {
383: char *p;
384:
385: p = NULL;
386: switch (type) {
387: case (ENOCALL):
388: p = "not callable";
389: break;
390: case (EPROLBODY):
391: p = "macro disallowed in document body";
392: break;
393: case (EBODYPROL):
394: p = "macro disallowed in document prologue";
395: break;
396: case (EMALLOC):
397: p = "memory exhausted";
398: break;
399: case (ETEXTPROL):
400: p = "text disallowed in document prologue";
401: break;
402: case (ENOBLANK):
403: p = "blank lines disallowed in non-literal contexts";
404: break;
405: case (ESPACE):
406: p = "whitespace disallowed after delimiter";
407: break;
408: }
409: assert(p);
410: return(mdoc_perr(m, line, pos, p));
411: }
412:
413:
414: static int
415: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 416: {
417:
1.25 kristaps 418: assert(mdoc->last);
419: assert(mdoc->first);
420: assert(MDOC_ROOT != p->type);
1.1 kristaps 421:
1.13 kristaps 422: switch (mdoc->next) {
423: case (MDOC_NEXT_SIBLING):
1.6 kristaps 424: mdoc->last->next = p;
425: p->prev = mdoc->last;
1.13 kristaps 426: p->parent = mdoc->last->parent;
1.1 kristaps 427: break;
1.13 kristaps 428: case (MDOC_NEXT_CHILD):
429: mdoc->last->child = p;
1.1 kristaps 430: p->parent = mdoc->last;
431: break;
432: default:
1.13 kristaps 433: abort();
434: /* NOTREACHED */
1.1 kristaps 435: }
436:
1.23 kristaps 437: if ( ! mdoc_valid_pre(mdoc, p))
438: return(0);
1.68 kristaps 439: if ( ! mdoc_action_pre(mdoc, p))
440: return(0);
1.27 kristaps 441:
442: switch (p->type) {
443: case (MDOC_HEAD):
444: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 445: p->parent->head = p;
1.27 kristaps 446: break;
447: case (MDOC_TAIL):
448: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 449: p->parent->tail = p;
1.27 kristaps 450: break;
451: case (MDOC_BODY):
452: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 453: p->parent->body = p;
1.27 kristaps 454: break;
455: default:
456: break;
457: }
458:
1.1 kristaps 459: mdoc->last = p;
1.71 kristaps 460:
461: switch (p->type) {
462: case (MDOC_TEXT):
463: if ( ! mdoc_valid_post(mdoc))
464: return(0);
465: if ( ! mdoc_action_post(mdoc))
466: return(0);
467: break;
468: default:
469: break;
470: }
471:
1.23 kristaps 472: return(1);
1.1 kristaps 473: }
474:
475:
1.45 kristaps 476: static struct mdoc_node *
1.73 kristaps 477: node_alloc(struct mdoc *mdoc, int line,
478: int pos, int tok, enum mdoc_type type)
1.45 kristaps 479: {
1.46 kristaps 480: struct mdoc_node *p;
481:
1.73 kristaps 482: if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
1.84 ! kristaps 483: (void)perr(mdoc, (mdoc)->last->line,
! 484: (mdoc)->last->pos, EMALLOC);
1.73 kristaps 485: return(NULL);
486: }
487:
1.46 kristaps 488: p->sec = mdoc->lastsec;
1.73 kristaps 489: p->line = line;
490: p->pos = pos;
491: p->tok = tok;
492: if (MDOC_TEXT != (p->type = type))
493: assert(p->tok >= 0);
1.45 kristaps 494:
1.46 kristaps 495: return(p);
1.45 kristaps 496: }
497:
498:
1.23 kristaps 499: int
1.22 kristaps 500: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17 kristaps 501: {
502: struct mdoc_node *p;
503:
1.73 kristaps 504: p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
505: if (NULL == p)
506: return(0);
507: return(node_append(mdoc, p));
1.17 kristaps 508: }
509:
510:
1.23 kristaps 511: int
1.22 kristaps 512: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 513: {
514: struct mdoc_node *p;
515:
516: assert(mdoc->first);
517: assert(mdoc->last);
518:
1.73 kristaps 519: p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
520: if (NULL == p)
521: return(0);
522: return(node_append(mdoc, p));
1.1 kristaps 523: }
524:
525:
1.23 kristaps 526: int
1.22 kristaps 527: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 528: {
529: struct mdoc_node *p;
530:
1.73 kristaps 531: p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
532: if (NULL == p)
533: return(0);
534: return(node_append(mdoc, p));
1.1 kristaps 535: }
536:
537:
1.23 kristaps 538: int
1.22 kristaps 539: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 540: int tok, struct mdoc_arg *args)
1.1 kristaps 541: {
542: struct mdoc_node *p;
543:
1.73 kristaps 544: p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
545: if (NULL == p)
546: return(0);
1.77 kristaps 547: p->args = args;
548: if (p->args)
1.53 kristaps 549: (args->refcnt)++;
1.73 kristaps 550: return(node_append(mdoc, p));
1.1 kristaps 551: }
552:
553:
1.23 kristaps 554: int
1.22 kristaps 555: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 556: int tok, struct mdoc_arg *args)
1.1 kristaps 557: {
558: struct mdoc_node *p;
559:
1.73 kristaps 560: p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
561: if (NULL == p)
562: return(0);
1.77 kristaps 563: p->args = args;
564: if (p->args)
1.53 kristaps 565: (args->refcnt)++;
1.73 kristaps 566: return(node_append(mdoc, p));
1.1 kristaps 567: }
568:
569:
1.23 kristaps 570: int
1.22 kristaps 571: mdoc_word_alloc(struct mdoc *mdoc,
572: int line, int pos, const char *word)
1.1 kristaps 573: {
574: struct mdoc_node *p;
575:
1.73 kristaps 576: p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
577: if (NULL == p)
578: return(0);
579: if (NULL == (p->string = strdup(word))) {
1.84 ! kristaps 580: (void)perr(mdoc, (mdoc)->last->line,
! 581: (mdoc)->last->pos, EMALLOC);
1.73 kristaps 582: return(0);
583: }
584: return(node_append(mdoc, p));
1.1 kristaps 585: }
586:
587:
1.53 kristaps 588: void
589: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 590: {
591:
1.53 kristaps 592: if (p->string)
593: free(p->string);
594: if (p->args)
595: mdoc_argv_free(p->args);
1.1 kristaps 596: free(p);
597: }
598:
599:
1.53 kristaps 600: void
601: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 602: {
603:
1.53 kristaps 604: if (p->child)
605: mdoc_node_freelist(p->child);
606: if (p->next)
607: mdoc_node_freelist(p->next);
1.1 kristaps 608:
1.53 kristaps 609: mdoc_node_free(p);
1.1 kristaps 610: }
611:
612:
1.53 kristaps 613: /*
614: * Parse free-form text, that is, a line that does not begin with the
615: * control character.
616: */
617: static int
1.68 kristaps 618: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 619: {
620:
1.68 kristaps 621: if (SEC_PROLOGUE == m->lastnamed)
1.73 kristaps 622: return(perr(m, line, 0, ETEXTPROL));
1.1 kristaps 623:
1.68 kristaps 624: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
1.73 kristaps 625: return(perr(m, line, 0, ENOBLANK));
1.68 kristaps 626:
627: if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53 kristaps 628: return(0);
1.1 kristaps 629:
1.68 kristaps 630: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 631: return(1);
1.1 kristaps 632: }
633:
634:
1.58 kristaps 635: static int
636: macrowarn(struct mdoc *m, int ln, const char *buf)
637: {
638: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.73 kristaps 639: return(mdoc_perr(m, ln, 1,
640: "unknown macro: %s%s",
1.59 kristaps 641: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 642: return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
643: "unknown macro: %s%s",
1.59 kristaps 644: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 645: }
646:
647:
1.53 kristaps 648: /*
649: * Parse a macro line, that is, a line beginning with the control
650: * character.
651: */
652: int
653: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 654: {
1.53 kristaps 655: int i, c;
656: char mac[5];
1.1 kristaps 657:
1.81 kristaps 658: /* Empty lines are ignored. */
1.63 kristaps 659:
660: if (0 == buf[1])
661: return(1);
662:
1.65 kristaps 663: if (' ' == buf[1]) {
1.63 kristaps 664: i = 2;
1.65 kristaps 665: while (buf[i] && ' ' == buf[i])
1.63 kristaps 666: i++;
667: if (0 == buf[i])
668: return(1);
1.73 kristaps 669: return(perr(m, ln, 1, ESPACE));
1.63 kristaps 670: }
1.1 kristaps 671:
1.53 kristaps 672: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 673:
1.53 kristaps 674: for (i = 1; i < 5; i++) {
675: if (0 == (mac[i - 1] = buf[i]))
676: break;
1.65 kristaps 677: else if (' ' == buf[i])
1.53 kristaps 678: break;
679: }
1.1 kristaps 680:
1.53 kristaps 681: mac[i - 1] = 0;
1.1 kristaps 682:
1.53 kristaps 683: if (i == 5 || i <= 2) {
1.58 kristaps 684: if ( ! macrowarn(m, ln, mac))
685: goto err;
686: return(1);
1.53 kristaps 687: }
688:
1.74 kristaps 689: if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
1.58 kristaps 690: if ( ! macrowarn(m, ln, mac))
691: goto err;
692: return(1);
1.53 kristaps 693: }
1.1 kristaps 694:
1.53 kristaps 695: /* The macro is sane. Jump to the next word. */
1.1 kristaps 696:
1.65 kristaps 697: while (buf[i] && ' ' == buf[i])
1.53 kristaps 698: i++;
1.1 kristaps 699:
1.53 kristaps 700: /* Begin recursive parse sequence. */
1.1 kristaps 701:
1.53 kristaps 702: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
703: goto err;
1.1 kristaps 704:
1.53 kristaps 705: return(1);
1.1 kristaps 706:
1.53 kristaps 707: err: /* Error out. */
1.1 kristaps 708:
1.53 kristaps 709: m->flags |= MDOC_HALT;
710: return(0);
1.1 kristaps 711: }
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