Annotation of mandoc/mdoc.c, Revision 1.89
1.89 ! kristaps 1: /* $Id: mdoc.c,v 1.88 2009/07/06 13:04:52 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 */
! 82: };
! 83:
1.1 kristaps 84: const char *const __mdoc_macronames[MDOC_MAX] = {
1.82 kristaps 85: "Ap", "Dd", "Dt", "Os",
1.1 kristaps 86: "Sh", "Ss", "Pp", "D1",
87: "Dl", "Bd", "Ed", "Bl",
88: "El", "It", "Ad", "An",
89: "Ar", "Cd", "Cm", "Dv",
90: "Er", "Ev", "Ex", "Fa",
91: "Fd", "Fl", "Fn", "Ft",
92: "Ic", "In", "Li", "Nd",
93: "Nm", "Op", "Ot", "Pa",
94: "Rv", "St", "Va", "Vt",
95: /* LINTED */
96: "Xr", "\%A", "\%B", "\%D",
97: /* LINTED */
98: "\%I", "\%J", "\%N", "\%O",
99: /* LINTED */
100: "\%P", "\%R", "\%T", "\%V",
101: "Ac", "Ao", "Aq", "At",
102: "Bc", "Bf", "Bo", "Bq",
103: "Bsx", "Bx", "Db", "Dc",
104: "Do", "Dq", "Ec", "Ef",
105: "Em", "Eo", "Fx", "Ms",
106: "No", "Ns", "Nx", "Ox",
107: "Pc", "Pf", "Po", "Pq",
108: "Qc", "Ql", "Qo", "Qq",
109: "Re", "Rs", "Sc", "So",
110: "Sq", "Sm", "Sx", "Sy",
111: "Tn", "Ux", "Xc", "Xo",
112: "Fo", "Fc", "Oo", "Oc",
113: "Bk", "Ek", "Bt", "Hf",
1.82 kristaps 114: "Fr", "Ud", "Lb", "Lp",
115: "Lk", "Mt", "Brq", "Bro",
1.64 kristaps 116: /* LINTED */
1.82 kristaps 117: "Brc", "\%C", "Es", "En",
1.69 kristaps 118: /* LINTED */
1.82 kristaps 119: "Dx", "\%Q"
1.1 kristaps 120: };
121:
122: const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
123: "split", "nosplit", "ragged",
124: "unfilled", "literal", "file",
125: "offset", "bullet", "dash",
126: "hyphen", "item", "enum",
127: "tag", "diag", "hang",
128: "ohang", "inset", "column",
129: "width", "compact", "std",
1.52 kristaps 130: "filled", "words", "emphasis",
1.64 kristaps 131: "symbolic", "nested"
1.1 kristaps 132: };
133:
134: const char * const *mdoc_macronames = __mdoc_macronames;
135: const char * const *mdoc_argnames = __mdoc_argnames;
136:
1.73 kristaps 137: static void mdoc_free1(struct mdoc *);
138: static int mdoc_alloc1(struct mdoc *);
139: static struct mdoc_node *node_alloc(struct mdoc *, int, int,
140: int, enum mdoc_type);
141: static int node_append(struct mdoc *,
1.71 kristaps 142: struct mdoc_node *);
143: static int parsetext(struct mdoc *, int, char *);
144: static int parsemacro(struct mdoc *, int, char *);
145: static int macrowarn(struct mdoc *, int, const char *);
1.88 kristaps 146:
1.71 kristaps 147:
1.1 kristaps 148: const struct mdoc_node *
1.71 kristaps 149: mdoc_node(const struct mdoc *m)
1.1 kristaps 150: {
151:
1.71 kristaps 152: return(MDOC_HALT & m->flags ? NULL : m->first);
1.1 kristaps 153: }
154:
155:
1.37 kristaps 156: const struct mdoc_meta *
1.71 kristaps 157: mdoc_meta(const struct mdoc *m)
1.37 kristaps 158: {
159:
1.71 kristaps 160: return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37 kristaps 161: }
162:
163:
1.85 kristaps 164: /*
165: * Frees volatile resources (parse tree, meta-data, fields).
166: */
1.73 kristaps 167: static void
168: mdoc_free1(struct mdoc *mdoc)
1.67 kristaps 169: {
170:
171: if (mdoc->first)
172: mdoc_node_freelist(mdoc->first);
173: if (mdoc->meta.title)
174: free(mdoc->meta.title);
175: if (mdoc->meta.os)
176: free(mdoc->meta.os);
177: if (mdoc->meta.name)
178: free(mdoc->meta.name);
179: if (mdoc->meta.arch)
180: free(mdoc->meta.arch);
181: if (mdoc->meta.vol)
182: free(mdoc->meta.vol);
1.73 kristaps 183: }
184:
185:
1.85 kristaps 186: /*
187: * Allocate all volatile resources (parse tree, meta-data, fields).
188: */
1.73 kristaps 189: static int
190: mdoc_alloc1(struct mdoc *mdoc)
191: {
1.67 kristaps 192:
193: bzero(&mdoc->meta, sizeof(struct mdoc_meta));
194: mdoc->flags = 0;
1.85 kristaps 195: mdoc->lastnamed = mdoc->lastsec = SEC_NONE;
1.70 kristaps 196: mdoc->last = calloc(1, sizeof(struct mdoc_node));
197: if (NULL == mdoc->last)
1.73 kristaps 198: return(0);
199:
1.70 kristaps 200: mdoc->first = mdoc->last;
1.67 kristaps 201: mdoc->last->type = MDOC_ROOT;
202: mdoc->next = MDOC_NEXT_CHILD;
1.73 kristaps 203: return(1);
204: }
205:
206:
207: /*
1.85 kristaps 208: * Free up volatile resources (see mdoc_free1()) then re-initialises the
209: * data with mdoc_alloc1(). After invocation, parse data has been reset
210: * and the parser is ready for re-invocation on a new tree; however,
211: * cross-parse non-volatile data is kept intact.
1.73 kristaps 212: */
213: int
214: mdoc_reset(struct mdoc *mdoc)
215: {
216:
217: mdoc_free1(mdoc);
218: return(mdoc_alloc1(mdoc));
1.67 kristaps 219: }
220:
221:
1.68 kristaps 222: /*
1.85 kristaps 223: * Completely free up all volatile and non-volatile parse resources.
224: * After invocation, the pointer is no longer usable.
1.68 kristaps 225: */
1.67 kristaps 226: void
1.38 kristaps 227: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 228: {
229:
1.73 kristaps 230: mdoc_free1(mdoc);
1.68 kristaps 231: if (mdoc->htab)
1.74 kristaps 232: mdoc_hash_free(mdoc->htab);
1.1 kristaps 233: free(mdoc);
234: }
235:
236:
1.85 kristaps 237: /*
238: * Allocate volatile and non-volatile parse resources.
239: */
1.1 kristaps 240: struct mdoc *
1.55 kristaps 241: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1 kristaps 242: {
243: struct mdoc *p;
244:
1.70 kristaps 245: if (NULL == (p = calloc(1, sizeof(struct mdoc))))
1.73 kristaps 246: return(NULL);
1.74 kristaps 247: if (cb)
248: (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1 kristaps 249:
250: p->data = data;
1.73 kristaps 251: p->pflags = pflags;
252:
1.74 kristaps 253: if (NULL == (p->htab = mdoc_hash_alloc())) {
254: free(p);
255: return(NULL);
256: } else if (mdoc_alloc1(p))
257: return(p);
1.1 kristaps 258:
1.73 kristaps 259: free(p);
260: return(NULL);
1.1 kristaps 261: }
262:
263:
1.68 kristaps 264: /*
265: * Climb back up the parse tree, validating open scopes. Mostly calls
1.85 kristaps 266: * through to macro_end() in macro.c.
1.68 kristaps 267: */
1.1 kristaps 268: int
1.72 kristaps 269: mdoc_endparse(struct mdoc *m)
1.20 kristaps 270: {
271:
1.72 kristaps 272: if (MDOC_HALT & m->flags)
1.20 kristaps 273: return(0);
1.72 kristaps 274: else if (mdoc_macroend(m))
1.20 kristaps 275: return(1);
1.72 kristaps 276: m->flags |= MDOC_HALT;
277: return(0);
1.20 kristaps 278: }
279:
280:
1.50 kristaps 281: /*
1.53 kristaps 282: * Main parse routine. Parses a single line -- really just hands off to
1.85 kristaps 283: * the macro (parsemacro()) or text parser (parsetext()).
1.50 kristaps 284: */
1.20 kristaps 285: int
1.53 kristaps 286: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 287: {
288:
1.53 kristaps 289: if (MDOC_HALT & m->flags)
1.20 kristaps 290: return(0);
1.50 kristaps 291:
1.53 kristaps 292: return('.' == *buf ? parsemacro(m, ln, buf) :
293: parsetext(m, ln, buf));
1.1 kristaps 294: }
295:
296:
297: int
1.31 kristaps 298: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
299: const char *fmt, ...)
1.1 kristaps 300: {
1.31 kristaps 301: char buf[256];
302: va_list ap;
1.1 kristaps 303:
304: if (NULL == mdoc->cb.mdoc_err)
305: return(0);
1.31 kristaps 306:
307: va_start(ap, fmt);
308: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
309: va_end(ap);
1.88 kristaps 310:
1.31 kristaps 311: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 312: }
313:
314:
315: int
1.87 kristaps 316: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1 kristaps 317: {
1.31 kristaps 318: char buf[256];
319: va_list ap;
1.1 kristaps 320:
321: if (NULL == mdoc->cb.mdoc_warn)
322: return(0);
1.31 kristaps 323:
324: va_start(ap, fmt);
325: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
326: va_end(ap);
1.88 kristaps 327:
1.87 kristaps 328: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, buf));
1.1 kristaps 329: }
330:
331:
332: int
1.88 kristaps 333: mdoc_err(struct mdoc *m, int line, int pos, int iserr, enum merr type)
1.78 kristaps 334: {
1.89 ! kristaps 335: const char *p;
1.88 kristaps 336:
1.89 ! kristaps 337: p = __mdoc_merrnames[(int)type];
1.73 kristaps 338: assert(p);
1.88 kristaps 339:
340: if (iserr)
341: return(mdoc_verr(m, line, pos, p));
342:
343: return(mdoc_vwarn(m, line, pos, p));
344: }
345:
346:
347: int
348: mdoc_macro(struct mdoc *m, int tok,
349: int ln, int pp, int *pos, char *buf)
350: {
351:
352: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
353: MDOC_PBODY & m->flags)
354: return(mdoc_perr(m, ln, pp, EPROLBODY));
355: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
356: ! (MDOC_PBODY & m->flags))
357: return(mdoc_perr(m, ln, pp, EBODYPROL));
358:
359: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
360: return(mdoc_perr(m, ln, pp, ENOCALL));
361:
362: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.73 kristaps 363: }
364:
365:
366: static int
367: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 368: {
369:
1.25 kristaps 370: assert(mdoc->last);
371: assert(mdoc->first);
372: assert(MDOC_ROOT != p->type);
1.1 kristaps 373:
1.13 kristaps 374: switch (mdoc->next) {
375: case (MDOC_NEXT_SIBLING):
1.6 kristaps 376: mdoc->last->next = p;
377: p->prev = mdoc->last;
1.13 kristaps 378: p->parent = mdoc->last->parent;
1.1 kristaps 379: break;
1.13 kristaps 380: case (MDOC_NEXT_CHILD):
381: mdoc->last->child = p;
1.1 kristaps 382: p->parent = mdoc->last;
383: break;
384: default:
1.13 kristaps 385: abort();
386: /* NOTREACHED */
1.1 kristaps 387: }
388:
1.86 kristaps 389: p->parent->nchild++;
390:
1.23 kristaps 391: if ( ! mdoc_valid_pre(mdoc, p))
392: return(0);
1.68 kristaps 393: if ( ! mdoc_action_pre(mdoc, p))
394: return(0);
1.27 kristaps 395:
396: switch (p->type) {
397: case (MDOC_HEAD):
398: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 399: p->parent->head = p;
1.27 kristaps 400: break;
401: case (MDOC_TAIL):
402: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 403: p->parent->tail = p;
1.27 kristaps 404: break;
405: case (MDOC_BODY):
406: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 407: p->parent->body = p;
1.27 kristaps 408: break;
409: default:
410: break;
411: }
412:
1.1 kristaps 413: mdoc->last = p;
1.71 kristaps 414:
415: switch (p->type) {
416: case (MDOC_TEXT):
417: if ( ! mdoc_valid_post(mdoc))
418: return(0);
419: if ( ! mdoc_action_post(mdoc))
420: return(0);
421: break;
422: default:
423: break;
424: }
425:
1.23 kristaps 426: return(1);
1.1 kristaps 427: }
428:
429:
1.45 kristaps 430: static struct mdoc_node *
1.73 kristaps 431: node_alloc(struct mdoc *mdoc, int line,
432: int pos, int tok, enum mdoc_type type)
1.45 kristaps 433: {
1.46 kristaps 434: struct mdoc_node *p;
435:
1.73 kristaps 436: if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
1.88 kristaps 437: (void)mdoc_nerr(mdoc, mdoc->last, EMALLOC);
1.73 kristaps 438: return(NULL);
439: }
440:
1.46 kristaps 441: p->sec = mdoc->lastsec;
1.73 kristaps 442: p->line = line;
443: p->pos = pos;
444: p->tok = tok;
445: if (MDOC_TEXT != (p->type = type))
446: assert(p->tok >= 0);
1.45 kristaps 447:
1.46 kristaps 448: return(p);
1.45 kristaps 449: }
450:
451:
1.23 kristaps 452: int
1.22 kristaps 453: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17 kristaps 454: {
455: struct mdoc_node *p;
456:
1.73 kristaps 457: p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
458: if (NULL == p)
459: return(0);
460: return(node_append(mdoc, p));
1.17 kristaps 461: }
462:
463:
1.23 kristaps 464: int
1.22 kristaps 465: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 466: {
467: struct mdoc_node *p;
468:
469: assert(mdoc->first);
470: assert(mdoc->last);
471:
1.73 kristaps 472: p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
473: if (NULL == p)
474: return(0);
475: return(node_append(mdoc, p));
1.1 kristaps 476: }
477:
478:
1.23 kristaps 479: int
1.22 kristaps 480: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 481: {
482: struct mdoc_node *p;
483:
1.73 kristaps 484: p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
485: if (NULL == p)
486: return(0);
487: return(node_append(mdoc, p));
1.1 kristaps 488: }
489:
490:
1.23 kristaps 491: int
1.22 kristaps 492: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 493: int tok, struct mdoc_arg *args)
1.1 kristaps 494: {
495: struct mdoc_node *p;
496:
1.73 kristaps 497: p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
498: if (NULL == p)
499: return(0);
1.77 kristaps 500: p->args = args;
501: if (p->args)
1.53 kristaps 502: (args->refcnt)++;
1.73 kristaps 503: return(node_append(mdoc, p));
1.1 kristaps 504: }
505:
506:
1.23 kristaps 507: int
1.22 kristaps 508: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 509: int tok, struct mdoc_arg *args)
1.1 kristaps 510: {
511: struct mdoc_node *p;
512:
1.73 kristaps 513: p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
514: if (NULL == p)
515: return(0);
1.77 kristaps 516: p->args = args;
517: if (p->args)
1.53 kristaps 518: (args->refcnt)++;
1.73 kristaps 519: return(node_append(mdoc, p));
1.1 kristaps 520: }
521:
522:
1.23 kristaps 523: int
1.22 kristaps 524: mdoc_word_alloc(struct mdoc *mdoc,
525: int line, int pos, const char *word)
1.1 kristaps 526: {
527: struct mdoc_node *p;
528:
1.73 kristaps 529: p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
530: if (NULL == p)
531: return(0);
532: if (NULL == (p->string = strdup(word))) {
1.88 kristaps 533: (void)mdoc_nerr(mdoc, mdoc->last, EMALLOC);
1.73 kristaps 534: return(0);
535: }
1.88 kristaps 536:
1.73 kristaps 537: return(node_append(mdoc, p));
1.1 kristaps 538: }
539:
540:
1.53 kristaps 541: void
542: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 543: {
544:
1.86 kristaps 545: if (p->parent)
546: p->parent->nchild--;
1.53 kristaps 547: if (p->string)
548: free(p->string);
549: if (p->args)
550: mdoc_argv_free(p->args);
1.1 kristaps 551: free(p);
552: }
553:
554:
1.53 kristaps 555: void
556: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 557: {
558:
1.53 kristaps 559: if (p->child)
560: mdoc_node_freelist(p->child);
561: if (p->next)
562: mdoc_node_freelist(p->next);
1.1 kristaps 563:
1.86 kristaps 564: assert(0 == p->nchild);
1.53 kristaps 565: mdoc_node_free(p);
1.1 kristaps 566: }
567:
568:
1.53 kristaps 569: /*
570: * Parse free-form text, that is, a line that does not begin with the
571: * control character.
572: */
573: static int
1.68 kristaps 574: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 575: {
576:
1.85 kristaps 577: if (SEC_NONE == m->lastnamed)
1.88 kristaps 578: return(mdoc_perr(m, line, 0, ETEXTPROL));
1.1 kristaps 579:
1.68 kristaps 580: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
1.88 kristaps 581: return(mdoc_perr(m, line, 0, ENOBLANK));
1.68 kristaps 582:
583: if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53 kristaps 584: return(0);
1.1 kristaps 585:
1.68 kristaps 586: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 587: return(1);
1.1 kristaps 588: }
589:
590:
1.58 kristaps 591: static int
592: macrowarn(struct mdoc *m, int ln, const char *buf)
593: {
594: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.88 kristaps 595: return(mdoc_verr(m, ln, 1,
1.73 kristaps 596: "unknown macro: %s%s",
1.59 kristaps 597: buf, strlen(buf) > 3 ? "..." : ""));
1.88 kristaps 598: return(mdoc_vwarn(m, ln, 1, "unknown macro: %s%s",
1.59 kristaps 599: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 600: }
601:
602:
1.53 kristaps 603: /*
604: * Parse a macro line, that is, a line beginning with the control
605: * character.
606: */
607: int
608: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 609: {
1.53 kristaps 610: int i, c;
611: char mac[5];
1.1 kristaps 612:
1.81 kristaps 613: /* Empty lines are ignored. */
1.63 kristaps 614:
615: if (0 == buf[1])
616: return(1);
617:
1.65 kristaps 618: if (' ' == buf[1]) {
1.63 kristaps 619: i = 2;
1.65 kristaps 620: while (buf[i] && ' ' == buf[i])
1.63 kristaps 621: i++;
622: if (0 == buf[i])
623: return(1);
1.88 kristaps 624: return(mdoc_perr(m, ln, 1, ESPACE));
1.63 kristaps 625: }
1.1 kristaps 626:
1.53 kristaps 627: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 628:
1.53 kristaps 629: for (i = 1; i < 5; i++) {
630: if (0 == (mac[i - 1] = buf[i]))
631: break;
1.65 kristaps 632: else if (' ' == buf[i])
1.53 kristaps 633: break;
634: }
1.1 kristaps 635:
1.53 kristaps 636: mac[i - 1] = 0;
1.1 kristaps 637:
1.53 kristaps 638: if (i == 5 || i <= 2) {
1.58 kristaps 639: if ( ! macrowarn(m, ln, mac))
640: goto err;
641: return(1);
1.53 kristaps 642: }
643:
1.74 kristaps 644: if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
1.58 kristaps 645: if ( ! macrowarn(m, ln, mac))
646: goto err;
647: return(1);
1.53 kristaps 648: }
1.1 kristaps 649:
1.53 kristaps 650: /* The macro is sane. Jump to the next word. */
1.1 kristaps 651:
1.65 kristaps 652: while (buf[i] && ' ' == buf[i])
1.53 kristaps 653: i++;
1.1 kristaps 654:
1.53 kristaps 655: /* Begin recursive parse sequence. */
1.1 kristaps 656:
1.53 kristaps 657: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
658: goto err;
1.1 kristaps 659:
1.53 kristaps 660: return(1);
1.1 kristaps 661:
1.53 kristaps 662: err: /* Error out. */
1.1 kristaps 663:
1.53 kristaps 664: m->flags |= MDOC_HALT;
665: return(0);
1.1 kristaps 666: }
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