Annotation of mandoc/mdoc.c, Revision 1.90
1.90 ! kristaps 1: /* $Id: mdoc.c,v 1.89 2009/07/07 09:29:15 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:
1.89 kristaps 26: const char *const __mdoc_merrnames[MERRMAX] = {
27: "trailing whitespace", /* ETAILWS */
28: "empty last list column", /* ECOLEMPTY */
29: "argument-like parameter", /* EARGVPARM */
30: "unexpected quoted parameter", /* EQUOTPARM */
31: "unterminated quoted parameter", /* EQUOTTERM */
32: "system: malloc error", /* EMALLOC */
33: "argument parameter suggested", /* EARGVAL */
34: "macro not callable", /* ENOCALL */
35: "macro disallowed in prologue", /* EBODYPROL */
36: "macro disallowed in body", /* EPROLBODY */
37: "text disallowed in prologue", /* ETEXTPROL */
38: "blank line disallowed", /* ENOBLANK */
39: "text parameter too long", /* ETOOLONG */
40: "invalid escape sequence", /* EESCAPE */
41: "invalid character", /* EPRINT */
42: "document has no body", /* ENODAT */
43: "document has no prologue", /* ENOPROLOGUE */
44: "expected line arguments", /* ELINE */
45: "invalid AT&T argument", /* EATT */
46: "default name not yet set", /* ENAME */
47: "missing list type", /* ELISTTYPE */
48: "missing display type", /* EDISPTYPE */
49: "too many display types", /* EMULTIDISP */
50: "too many list types", /* EMULTILIST */
51: "NAME section must be first", /* ESECNAME */
52: "badly-formed NAME section", /* ENAMESECINC */
53: "argument repeated", /* EARGREP */
54: "expected boolean parameter", /* EBOOL */
55: "inconsistent column syntax", /* ECOLMIS */
56: "nested display invalid", /* ENESTDISP */
57: "width argument missing", /* EMISSWIDTH */
58: "invalid section for this manual section", /* EWRONGMSEC */
59: "section out of conventional order", /* ESECOOO */
60: "section repeated", /* ESECREP */
61: "invalid standard argument", /* EBADSTAND */
62: "multi-line arguments discouraged", /* ENOMULTILINE */
63: "multi-line arguments suggested", /* EMULTILINE */
64: "line arguments discouraged", /* ENOLINE */
65: "prologue macro out of conventional order", /* EPROLOOO */
66: "prologue macro repeated", /* EPROLREP */
67: "invalid manual section", /* EBADMSEC */
68: "invalid section", /* EBADSEC */
69: "invalid font mode", /* EFONT */
70: "invalid date syntax", /* EBADDATE */
71: "invalid number format", /* ENUMFMT */
72: "superfluous width argument", /* ENOWIDTH */
73: "system: utsname error", /* EUTSNAME */
74: "obsolete macro", /* EOBS */
75: "macro-like parameter", /* EMACPARM */
76: "end-of-line scope violation", /* EIMPBRK */
77: "empty macro ignored", /* EIGNE */
78: "unclosed explicit scope", /* EOPEN */
79: "unterminated quoted phrase", /* EQUOTPHR */
80: "closure macro without prior context", /* ENOCTX */
81: "invalid whitespace after control character", /* ESPACE */
1.90 ! kristaps 82: "no description found for library" /* ELIB */
1.89 kristaps 83: };
84:
1.1 kristaps 85: const char *const __mdoc_macronames[MDOC_MAX] = {
1.82 kristaps 86: "Ap", "Dd", "Dt", "Os",
1.1 kristaps 87: "Sh", "Ss", "Pp", "D1",
88: "Dl", "Bd", "Ed", "Bl",
89: "El", "It", "Ad", "An",
90: "Ar", "Cd", "Cm", "Dv",
91: "Er", "Ev", "Ex", "Fa",
92: "Fd", "Fl", "Fn", "Ft",
93: "Ic", "In", "Li", "Nd",
94: "Nm", "Op", "Ot", "Pa",
95: "Rv", "St", "Va", "Vt",
96: /* LINTED */
97: "Xr", "\%A", "\%B", "\%D",
98: /* LINTED */
99: "\%I", "\%J", "\%N", "\%O",
100: /* LINTED */
101: "\%P", "\%R", "\%T", "\%V",
102: "Ac", "Ao", "Aq", "At",
103: "Bc", "Bf", "Bo", "Bq",
104: "Bsx", "Bx", "Db", "Dc",
105: "Do", "Dq", "Ec", "Ef",
106: "Em", "Eo", "Fx", "Ms",
107: "No", "Ns", "Nx", "Ox",
108: "Pc", "Pf", "Po", "Pq",
109: "Qc", "Ql", "Qo", "Qq",
110: "Re", "Rs", "Sc", "So",
111: "Sq", "Sm", "Sx", "Sy",
112: "Tn", "Ux", "Xc", "Xo",
113: "Fo", "Fc", "Oo", "Oc",
114: "Bk", "Ek", "Bt", "Hf",
1.82 kristaps 115: "Fr", "Ud", "Lb", "Lp",
116: "Lk", "Mt", "Brq", "Bro",
1.64 kristaps 117: /* LINTED */
1.82 kristaps 118: "Brc", "\%C", "Es", "En",
1.69 kristaps 119: /* LINTED */
1.82 kristaps 120: "Dx", "\%Q"
1.1 kristaps 121: };
122:
123: const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
124: "split", "nosplit", "ragged",
125: "unfilled", "literal", "file",
126: "offset", "bullet", "dash",
127: "hyphen", "item", "enum",
128: "tag", "diag", "hang",
129: "ohang", "inset", "column",
130: "width", "compact", "std",
1.52 kristaps 131: "filled", "words", "emphasis",
1.64 kristaps 132: "symbolic", "nested"
1.1 kristaps 133: };
134:
135: const char * const *mdoc_macronames = __mdoc_macronames;
136: const char * const *mdoc_argnames = __mdoc_argnames;
137:
1.73 kristaps 138: static void mdoc_free1(struct mdoc *);
139: static int mdoc_alloc1(struct mdoc *);
140: static struct mdoc_node *node_alloc(struct mdoc *, int, int,
141: int, enum mdoc_type);
142: static int node_append(struct mdoc *,
1.71 kristaps 143: struct mdoc_node *);
144: static int parsetext(struct mdoc *, int, char *);
145: static int parsemacro(struct mdoc *, int, char *);
146: static int macrowarn(struct mdoc *, int, const char *);
1.88 kristaps 147:
1.71 kristaps 148:
1.1 kristaps 149: const struct mdoc_node *
1.71 kristaps 150: mdoc_node(const struct mdoc *m)
1.1 kristaps 151: {
152:
1.71 kristaps 153: return(MDOC_HALT & m->flags ? NULL : m->first);
1.1 kristaps 154: }
155:
156:
1.37 kristaps 157: const struct mdoc_meta *
1.71 kristaps 158: mdoc_meta(const struct mdoc *m)
1.37 kristaps 159: {
160:
1.71 kristaps 161: return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37 kristaps 162: }
163:
164:
1.85 kristaps 165: /*
166: * Frees volatile resources (parse tree, meta-data, fields).
167: */
1.73 kristaps 168: static void
169: mdoc_free1(struct mdoc *mdoc)
1.67 kristaps 170: {
171:
172: if (mdoc->first)
173: mdoc_node_freelist(mdoc->first);
174: if (mdoc->meta.title)
175: free(mdoc->meta.title);
176: if (mdoc->meta.os)
177: free(mdoc->meta.os);
178: if (mdoc->meta.name)
179: free(mdoc->meta.name);
180: if (mdoc->meta.arch)
181: free(mdoc->meta.arch);
182: if (mdoc->meta.vol)
183: free(mdoc->meta.vol);
1.73 kristaps 184: }
185:
186:
1.85 kristaps 187: /*
188: * Allocate all volatile resources (parse tree, meta-data, fields).
189: */
1.73 kristaps 190: static int
191: mdoc_alloc1(struct mdoc *mdoc)
192: {
1.67 kristaps 193:
194: bzero(&mdoc->meta, sizeof(struct mdoc_meta));
195: mdoc->flags = 0;
1.85 kristaps 196: mdoc->lastnamed = mdoc->lastsec = SEC_NONE;
1.70 kristaps 197: mdoc->last = calloc(1, sizeof(struct mdoc_node));
198: if (NULL == mdoc->last)
1.73 kristaps 199: return(0);
200:
1.70 kristaps 201: mdoc->first = mdoc->last;
1.67 kristaps 202: mdoc->last->type = MDOC_ROOT;
203: mdoc->next = MDOC_NEXT_CHILD;
1.73 kristaps 204: return(1);
205: }
206:
207:
208: /*
1.85 kristaps 209: * Free up volatile resources (see mdoc_free1()) then re-initialises the
210: * data with mdoc_alloc1(). After invocation, parse data has been reset
211: * and the parser is ready for re-invocation on a new tree; however,
212: * cross-parse non-volatile data is kept intact.
1.73 kristaps 213: */
214: int
215: mdoc_reset(struct mdoc *mdoc)
216: {
217:
218: mdoc_free1(mdoc);
219: return(mdoc_alloc1(mdoc));
1.67 kristaps 220: }
221:
222:
1.68 kristaps 223: /*
1.85 kristaps 224: * Completely free up all volatile and non-volatile parse resources.
225: * After invocation, the pointer is no longer usable.
1.68 kristaps 226: */
1.67 kristaps 227: void
1.38 kristaps 228: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 229: {
230:
1.73 kristaps 231: mdoc_free1(mdoc);
1.68 kristaps 232: if (mdoc->htab)
1.74 kristaps 233: mdoc_hash_free(mdoc->htab);
1.1 kristaps 234: free(mdoc);
235: }
236:
237:
1.85 kristaps 238: /*
239: * Allocate volatile and non-volatile parse resources.
240: */
1.1 kristaps 241: struct mdoc *
1.55 kristaps 242: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1 kristaps 243: {
244: struct mdoc *p;
245:
1.70 kristaps 246: if (NULL == (p = calloc(1, sizeof(struct mdoc))))
1.73 kristaps 247: return(NULL);
1.74 kristaps 248: if (cb)
249: (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1 kristaps 250:
251: p->data = data;
1.73 kristaps 252: p->pflags = pflags;
253:
1.74 kristaps 254: if (NULL == (p->htab = mdoc_hash_alloc())) {
255: free(p);
256: return(NULL);
257: } else if (mdoc_alloc1(p))
258: return(p);
1.1 kristaps 259:
1.73 kristaps 260: free(p);
261: return(NULL);
1.1 kristaps 262: }
263:
264:
1.68 kristaps 265: /*
266: * Climb back up the parse tree, validating open scopes. Mostly calls
1.85 kristaps 267: * through to macro_end() in macro.c.
1.68 kristaps 268: */
1.1 kristaps 269: int
1.72 kristaps 270: mdoc_endparse(struct mdoc *m)
1.20 kristaps 271: {
272:
1.72 kristaps 273: if (MDOC_HALT & m->flags)
1.20 kristaps 274: return(0);
1.72 kristaps 275: else if (mdoc_macroend(m))
1.20 kristaps 276: return(1);
1.72 kristaps 277: m->flags |= MDOC_HALT;
278: return(0);
1.20 kristaps 279: }
280:
281:
1.50 kristaps 282: /*
1.53 kristaps 283: * Main parse routine. Parses a single line -- really just hands off to
1.85 kristaps 284: * the macro (parsemacro()) or text parser (parsetext()).
1.50 kristaps 285: */
1.20 kristaps 286: int
1.53 kristaps 287: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 288: {
289:
1.53 kristaps 290: if (MDOC_HALT & m->flags)
1.20 kristaps 291: return(0);
1.50 kristaps 292:
1.53 kristaps 293: return('.' == *buf ? parsemacro(m, ln, buf) :
294: parsetext(m, ln, buf));
1.1 kristaps 295: }
296:
297:
298: int
1.31 kristaps 299: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
300: const char *fmt, ...)
1.1 kristaps 301: {
1.31 kristaps 302: char buf[256];
303: va_list ap;
1.1 kristaps 304:
305: if (NULL == mdoc->cb.mdoc_err)
306: return(0);
1.31 kristaps 307:
308: va_start(ap, fmt);
309: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
310: va_end(ap);
1.88 kristaps 311:
1.31 kristaps 312: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 313: }
314:
315:
316: int
1.87 kristaps 317: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1 kristaps 318: {
1.31 kristaps 319: char buf[256];
320: va_list ap;
1.1 kristaps 321:
322: if (NULL == mdoc->cb.mdoc_warn)
323: return(0);
1.31 kristaps 324:
325: va_start(ap, fmt);
326: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
327: va_end(ap);
1.88 kristaps 328:
1.87 kristaps 329: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, buf));
1.1 kristaps 330: }
331:
332:
333: int
1.88 kristaps 334: mdoc_err(struct mdoc *m, int line, int pos, int iserr, enum merr type)
1.78 kristaps 335: {
1.89 kristaps 336: const char *p;
1.88 kristaps 337:
1.89 kristaps 338: p = __mdoc_merrnames[(int)type];
1.73 kristaps 339: assert(p);
1.88 kristaps 340:
341: if (iserr)
342: return(mdoc_verr(m, line, pos, p));
343:
344: return(mdoc_vwarn(m, line, pos, p));
345: }
346:
347:
348: int
349: mdoc_macro(struct mdoc *m, int tok,
350: int ln, int pp, int *pos, char *buf)
351: {
352:
353: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
354: MDOC_PBODY & m->flags)
355: return(mdoc_perr(m, ln, pp, EPROLBODY));
356: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
357: ! (MDOC_PBODY & m->flags))
358: return(mdoc_perr(m, ln, pp, EBODYPROL));
359:
360: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
361: return(mdoc_perr(m, ln, pp, ENOCALL));
362:
363: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.73 kristaps 364: }
365:
366:
367: static int
368: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 369: {
370:
1.25 kristaps 371: assert(mdoc->last);
372: assert(mdoc->first);
373: assert(MDOC_ROOT != p->type);
1.1 kristaps 374:
1.13 kristaps 375: switch (mdoc->next) {
376: case (MDOC_NEXT_SIBLING):
1.6 kristaps 377: mdoc->last->next = p;
378: p->prev = mdoc->last;
1.13 kristaps 379: p->parent = mdoc->last->parent;
1.1 kristaps 380: break;
1.13 kristaps 381: case (MDOC_NEXT_CHILD):
382: mdoc->last->child = p;
1.1 kristaps 383: p->parent = mdoc->last;
384: break;
385: default:
1.13 kristaps 386: abort();
387: /* NOTREACHED */
1.1 kristaps 388: }
389:
1.86 kristaps 390: p->parent->nchild++;
391:
1.23 kristaps 392: if ( ! mdoc_valid_pre(mdoc, p))
393: return(0);
1.68 kristaps 394: if ( ! mdoc_action_pre(mdoc, p))
395: return(0);
1.27 kristaps 396:
397: switch (p->type) {
398: case (MDOC_HEAD):
399: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 400: p->parent->head = p;
1.27 kristaps 401: break;
402: case (MDOC_TAIL):
403: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 404: p->parent->tail = p;
1.27 kristaps 405: break;
406: case (MDOC_BODY):
407: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 408: p->parent->body = p;
1.27 kristaps 409: break;
410: default:
411: break;
412: }
413:
1.1 kristaps 414: mdoc->last = p;
1.71 kristaps 415:
416: switch (p->type) {
417: case (MDOC_TEXT):
418: if ( ! mdoc_valid_post(mdoc))
419: return(0);
420: if ( ! mdoc_action_post(mdoc))
421: return(0);
422: break;
423: default:
424: break;
425: }
426:
1.23 kristaps 427: return(1);
1.1 kristaps 428: }
429:
430:
1.45 kristaps 431: static struct mdoc_node *
1.73 kristaps 432: node_alloc(struct mdoc *mdoc, int line,
433: int pos, int tok, enum mdoc_type type)
1.45 kristaps 434: {
1.46 kristaps 435: struct mdoc_node *p;
436:
1.73 kristaps 437: if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
1.88 kristaps 438: (void)mdoc_nerr(mdoc, mdoc->last, EMALLOC);
1.73 kristaps 439: return(NULL);
440: }
441:
1.46 kristaps 442: p->sec = mdoc->lastsec;
1.73 kristaps 443: p->line = line;
444: p->pos = pos;
445: p->tok = tok;
446: if (MDOC_TEXT != (p->type = type))
447: assert(p->tok >= 0);
1.45 kristaps 448:
1.46 kristaps 449: return(p);
1.45 kristaps 450: }
451:
452:
1.23 kristaps 453: int
1.22 kristaps 454: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17 kristaps 455: {
456: struct mdoc_node *p;
457:
1.73 kristaps 458: p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
459: if (NULL == p)
460: return(0);
461: return(node_append(mdoc, p));
1.17 kristaps 462: }
463:
464:
1.23 kristaps 465: int
1.22 kristaps 466: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 467: {
468: struct mdoc_node *p;
469:
470: assert(mdoc->first);
471: assert(mdoc->last);
472:
1.73 kristaps 473: p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
474: if (NULL == p)
475: return(0);
476: return(node_append(mdoc, p));
1.1 kristaps 477: }
478:
479:
1.23 kristaps 480: int
1.22 kristaps 481: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 482: {
483: struct mdoc_node *p;
484:
1.73 kristaps 485: p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
486: if (NULL == p)
487: return(0);
488: return(node_append(mdoc, p));
1.1 kristaps 489: }
490:
491:
1.23 kristaps 492: int
1.22 kristaps 493: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 494: int tok, struct mdoc_arg *args)
1.1 kristaps 495: {
496: struct mdoc_node *p;
497:
1.73 kristaps 498: p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
499: if (NULL == p)
500: return(0);
1.77 kristaps 501: p->args = args;
502: if (p->args)
1.53 kristaps 503: (args->refcnt)++;
1.73 kristaps 504: return(node_append(mdoc, p));
1.1 kristaps 505: }
506:
507:
1.23 kristaps 508: int
1.22 kristaps 509: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 510: int tok, struct mdoc_arg *args)
1.1 kristaps 511: {
512: struct mdoc_node *p;
513:
1.73 kristaps 514: p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
515: if (NULL == p)
516: return(0);
1.77 kristaps 517: p->args = args;
518: if (p->args)
1.53 kristaps 519: (args->refcnt)++;
1.73 kristaps 520: return(node_append(mdoc, p));
1.1 kristaps 521: }
522:
523:
1.23 kristaps 524: int
1.22 kristaps 525: mdoc_word_alloc(struct mdoc *mdoc,
526: int line, int pos, const char *word)
1.1 kristaps 527: {
528: struct mdoc_node *p;
529:
1.73 kristaps 530: p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
531: if (NULL == p)
532: return(0);
533: if (NULL == (p->string = strdup(word))) {
1.88 kristaps 534: (void)mdoc_nerr(mdoc, mdoc->last, EMALLOC);
1.73 kristaps 535: return(0);
536: }
1.88 kristaps 537:
1.73 kristaps 538: return(node_append(mdoc, p));
1.1 kristaps 539: }
540:
541:
1.53 kristaps 542: void
543: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 544: {
545:
1.86 kristaps 546: if (p->parent)
547: p->parent->nchild--;
1.53 kristaps 548: if (p->string)
549: free(p->string);
550: if (p->args)
551: mdoc_argv_free(p->args);
1.1 kristaps 552: free(p);
553: }
554:
555:
1.53 kristaps 556: void
557: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 558: {
559:
1.53 kristaps 560: if (p->child)
561: mdoc_node_freelist(p->child);
562: if (p->next)
563: mdoc_node_freelist(p->next);
1.1 kristaps 564:
1.86 kristaps 565: assert(0 == p->nchild);
1.53 kristaps 566: mdoc_node_free(p);
1.1 kristaps 567: }
568:
569:
1.53 kristaps 570: /*
571: * Parse free-form text, that is, a line that does not begin with the
572: * control character.
573: */
574: static int
1.68 kristaps 575: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 576: {
577:
1.85 kristaps 578: if (SEC_NONE == m->lastnamed)
1.88 kristaps 579: return(mdoc_perr(m, line, 0, ETEXTPROL));
1.1 kristaps 580:
1.68 kristaps 581: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
1.88 kristaps 582: return(mdoc_perr(m, line, 0, ENOBLANK));
1.68 kristaps 583:
584: if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53 kristaps 585: return(0);
1.1 kristaps 586:
1.68 kristaps 587: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 588: return(1);
1.1 kristaps 589: }
590:
591:
1.58 kristaps 592: static int
593: macrowarn(struct mdoc *m, int ln, const char *buf)
594: {
595: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.88 kristaps 596: return(mdoc_verr(m, ln, 1,
1.73 kristaps 597: "unknown macro: %s%s",
1.59 kristaps 598: buf, strlen(buf) > 3 ? "..." : ""));
1.88 kristaps 599: return(mdoc_vwarn(m, ln, 1, "unknown macro: %s%s",
1.59 kristaps 600: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 601: }
602:
603:
1.53 kristaps 604: /*
605: * Parse a macro line, that is, a line beginning with the control
606: * character.
607: */
608: int
609: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 610: {
1.53 kristaps 611: int i, c;
612: char mac[5];
1.1 kristaps 613:
1.81 kristaps 614: /* Empty lines are ignored. */
1.63 kristaps 615:
616: if (0 == buf[1])
617: return(1);
618:
1.65 kristaps 619: if (' ' == buf[1]) {
1.63 kristaps 620: i = 2;
1.65 kristaps 621: while (buf[i] && ' ' == buf[i])
1.63 kristaps 622: i++;
623: if (0 == buf[i])
624: return(1);
1.88 kristaps 625: return(mdoc_perr(m, ln, 1, ESPACE));
1.63 kristaps 626: }
1.1 kristaps 627:
1.53 kristaps 628: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 629:
1.53 kristaps 630: for (i = 1; i < 5; i++) {
631: if (0 == (mac[i - 1] = buf[i]))
632: break;
1.65 kristaps 633: else if (' ' == buf[i])
1.53 kristaps 634: break;
635: }
1.1 kristaps 636:
1.53 kristaps 637: mac[i - 1] = 0;
1.1 kristaps 638:
1.53 kristaps 639: if (i == 5 || i <= 2) {
1.58 kristaps 640: if ( ! macrowarn(m, ln, mac))
641: goto err;
642: return(1);
1.53 kristaps 643: }
644:
1.74 kristaps 645: if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
1.58 kristaps 646: if ( ! macrowarn(m, ln, mac))
647: goto err;
648: return(1);
1.53 kristaps 649: }
1.1 kristaps 650:
1.53 kristaps 651: /* The macro is sane. Jump to the next word. */
1.1 kristaps 652:
1.65 kristaps 653: while (buf[i] && ' ' == buf[i])
1.53 kristaps 654: i++;
1.1 kristaps 655:
1.53 kristaps 656: /* Begin recursive parse sequence. */
1.1 kristaps 657:
1.53 kristaps 658: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
659: goto err;
1.1 kristaps 660:
1.53 kristaps 661: return(1);
1.1 kristaps 662:
1.53 kristaps 663: err: /* Error out. */
1.1 kristaps 664:
1.53 kristaps 665: m->flags |= MDOC_HALT;
666: return(0);
1.1 kristaps 667: }
CVSweb
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to mdoc.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [cvsweb.bsd.lv] / mandoc