Annotation of mandoc/mdoc.c, Revision 1.78
1.78 ! kristaps 1: /* $Id: mdoc.c,v 1.77 2009/06/12 12:52:51 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: void
1.31 kristaps 246: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1 kristaps 247: {
1.31 kristaps 248: char buf[256];
1.23 kristaps 249: va_list ap;
1.1 kristaps 250:
251: if (NULL == mdoc->cb.mdoc_msg)
252: return;
253:
254: va_start(ap, fmt);
1.31 kristaps 255: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.1 kristaps 256: va_end(ap);
1.31 kristaps 257: (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
1.1 kristaps 258: }
259:
260:
261: int
1.31 kristaps 262: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
263: const char *fmt, ...)
1.1 kristaps 264: {
1.31 kristaps 265: char buf[256];
266: va_list ap;
1.1 kristaps 267:
268: if (NULL == mdoc->cb.mdoc_err)
269: return(0);
1.31 kristaps 270:
271: va_start(ap, fmt);
272: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
273: va_end(ap);
274: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 275: }
276:
277:
278: int
1.31 kristaps 279: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
280: enum mdoc_warn type, const char *fmt, ...)
1.1 kristaps 281: {
1.31 kristaps 282: char buf[256];
283: va_list ap;
1.1 kristaps 284:
285: if (NULL == mdoc->cb.mdoc_warn)
286: return(0);
1.31 kristaps 287:
288: va_start(ap, fmt);
289: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
290: va_end(ap);
291: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1 kristaps 292: }
293:
294:
295: int
1.78 ! kristaps 296: mdoc_nwarn(struct mdoc *mdoc, const struct mdoc_node *node, enum mdoc_warn type,
! 297: const char *fmt, ...)
! 298: {
! 299: char buf[256];
! 300: va_list ap;
! 301:
! 302: if (NULL == mdoc->cb.mdoc_warn)
! 303: return(0);
! 304:
! 305: va_start(ap, fmt);
! 306: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 307: va_end(ap);
! 308: return((*mdoc->cb.mdoc_warn)(mdoc->data, node->line, node->pos, type,
! 309: buf));
! 310: }
! 311:
! 312: int
! 313: mdoc_nerr(struct mdoc *mdoc, const struct mdoc_node *node, 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, node->line, node->pos, buf));
! 325: }
! 326:
! 327:
! 328: int
! 329: mdoc_warn(struct mdoc *mdoc, enum mdoc_warn type, const char *fmt, ...)
! 330: {
! 331: char buf[256];
! 332: va_list ap;
! 333:
! 334: if (NULL == mdoc->cb.mdoc_warn)
! 335: return(0);
! 336:
! 337: va_start(ap, fmt);
! 338: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 339: va_end(ap);
! 340: return((*mdoc->cb.mdoc_warn)(mdoc->data, mdoc->last->line,
! 341: mdoc->last->pos, type, buf));
! 342: }
! 343:
! 344:
! 345: int
! 346: mdoc_err(struct mdoc *mdoc, 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, mdoc->last->line,
! 358: mdoc->last->pos, buf));
! 359: }
! 360:
! 361:
! 362: void
! 363: mdoc_msg(struct mdoc *mdoc, const char *fmt, ...)
! 364: {
! 365: char buf[256];
! 366: va_list ap;
! 367:
! 368: if (NULL == mdoc->cb.mdoc_msg)
! 369: return;
! 370:
! 371: va_start(ap, fmt);
! 372: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 373: va_end(ap);
! 374: (*mdoc->cb.mdoc_msg)(mdoc->data, mdoc->last->line, mdoc->last->pos,
! 375: buf);
! 376: }
! 377:
! 378:
! 379: void
! 380: mdoc_pmsg(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
! 381: {
! 382: char buf[256];
! 383: va_list ap;
! 384:
! 385: if (NULL == mdoc->cb.mdoc_msg)
! 386: return;
! 387:
! 388: va_start(ap, fmt);
! 389: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 390: va_end(ap);
! 391: (*mdoc->cb.mdoc_msg)(mdoc->data, line, pos, buf);
! 392: }
! 393:
! 394:
! 395: int
! 396: mdoc_pwarn(struct mdoc *mdoc, int line, int pos, enum mdoc_warn type,
! 397: const char *fmt, ...)
! 398: {
! 399: char buf[256];
! 400: va_list ap;
! 401:
! 402: if (NULL == mdoc->cb.mdoc_warn)
! 403: return(0);
! 404:
! 405: va_start(ap, fmt);
! 406: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 407: va_end(ap);
! 408: return((*mdoc->cb.mdoc_warn)(mdoc->data, line, pos, type, buf));
! 409: }
! 410:
! 411: int
! 412: mdoc_perr(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
! 413: {
! 414: char buf[256];
! 415: va_list ap;
! 416:
! 417: if (NULL == mdoc->cb.mdoc_err)
! 418: return(0);
! 419:
! 420: va_start(ap, fmt);
! 421: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
! 422: va_end(ap);
! 423: return((*mdoc->cb.mdoc_err)(mdoc->data, line, pos, buf));
! 424: }
! 425:
! 426:
! 427: int
1.53 kristaps 428: mdoc_macro(struct mdoc *m, int tok,
429: int ln, int pp, int *pos, char *buf)
1.1 kristaps 430: {
431:
1.53 kristaps 432: /* FIXME - these should happen during validation. */
1.31 kristaps 433:
1.44 kristaps 434: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.53 kristaps 435: SEC_PROLOGUE != m->lastnamed)
1.73 kristaps 436: return(perr(m, ln, pp, EPROLBODY));
1.53 kristaps 437:
1.44 kristaps 438: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.53 kristaps 439: SEC_PROLOGUE == m->lastnamed)
1.73 kristaps 440: return(perr(m, ln, pp, EBODYPROL));
1.53 kristaps 441:
442: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.73 kristaps 443: return(perr(m, ln, pp, ENOCALL));
1.53 kristaps 444:
445: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1 kristaps 446: }
447:
448:
1.23 kristaps 449: static int
1.73 kristaps 450: perr(struct mdoc *m, int line, int pos, enum merr type)
451: {
452: char *p;
453:
454: p = NULL;
455: switch (type) {
456: case (ENOCALL):
457: p = "not callable";
458: break;
459: case (EPROLBODY):
460: p = "macro disallowed in document body";
461: break;
462: case (EBODYPROL):
463: p = "macro disallowed in document prologue";
464: break;
465: case (EMALLOC):
466: p = "memory exhausted";
467: break;
468: case (ETEXTPROL):
469: p = "text disallowed in document prologue";
470: break;
471: case (ENOBLANK):
472: p = "blank lines disallowed in non-literal contexts";
473: break;
474: case (ESPACE):
475: p = "whitespace disallowed after delimiter";
476: break;
477: }
478: assert(p);
479: return(mdoc_perr(m, line, pos, p));
480: }
481:
482:
483: static int
484: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 485: {
486:
1.25 kristaps 487: assert(mdoc->last);
488: assert(mdoc->first);
489: assert(MDOC_ROOT != p->type);
1.1 kristaps 490:
1.13 kristaps 491: switch (mdoc->next) {
492: case (MDOC_NEXT_SIBLING):
1.6 kristaps 493: mdoc->last->next = p;
494: p->prev = mdoc->last;
1.13 kristaps 495: p->parent = mdoc->last->parent;
1.1 kristaps 496: break;
1.13 kristaps 497: case (MDOC_NEXT_CHILD):
498: mdoc->last->child = p;
1.1 kristaps 499: p->parent = mdoc->last;
500: break;
501: default:
1.13 kristaps 502: abort();
503: /* NOTREACHED */
1.1 kristaps 504: }
505:
1.23 kristaps 506: if ( ! mdoc_valid_pre(mdoc, p))
507: return(0);
1.68 kristaps 508: if ( ! mdoc_action_pre(mdoc, p))
509: return(0);
1.27 kristaps 510:
511: switch (p->type) {
512: case (MDOC_HEAD):
513: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 514: p->parent->head = p;
1.27 kristaps 515: break;
516: case (MDOC_TAIL):
517: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 518: p->parent->tail = p;
1.27 kristaps 519: break;
520: case (MDOC_BODY):
521: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 522: p->parent->body = p;
1.27 kristaps 523: break;
524: default:
525: break;
526: }
527:
1.1 kristaps 528: mdoc->last = p;
1.71 kristaps 529:
530: switch (p->type) {
531: case (MDOC_TEXT):
532: if ( ! mdoc_valid_post(mdoc))
533: return(0);
534: if ( ! mdoc_action_post(mdoc))
535: return(0);
536: break;
537: default:
538: break;
539: }
540:
1.23 kristaps 541: return(1);
1.1 kristaps 542: }
543:
544:
1.45 kristaps 545: static struct mdoc_node *
1.73 kristaps 546: node_alloc(struct mdoc *mdoc, int line,
547: int pos, int tok, enum mdoc_type type)
1.45 kristaps 548: {
1.46 kristaps 549: struct mdoc_node *p;
550:
1.73 kristaps 551: if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
552: (void)verr(mdoc, EMALLOC);
553: return(NULL);
554: }
555:
1.46 kristaps 556: p->sec = mdoc->lastsec;
1.73 kristaps 557: p->line = line;
558: p->pos = pos;
559: p->tok = tok;
560: if (MDOC_TEXT != (p->type = type))
561: assert(p->tok >= 0);
1.45 kristaps 562:
1.46 kristaps 563: return(p);
1.45 kristaps 564: }
565:
566:
1.23 kristaps 567: int
1.22 kristaps 568: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17 kristaps 569: {
570: struct mdoc_node *p;
571:
1.73 kristaps 572: p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
573: if (NULL == p)
574: return(0);
575: return(node_append(mdoc, p));
1.17 kristaps 576: }
577:
578:
1.23 kristaps 579: int
1.22 kristaps 580: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 581: {
582: struct mdoc_node *p;
583:
584: assert(mdoc->first);
585: assert(mdoc->last);
586:
1.73 kristaps 587: p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
588: if (NULL == p)
589: return(0);
590: return(node_append(mdoc, p));
1.1 kristaps 591: }
592:
593:
1.23 kristaps 594: int
1.22 kristaps 595: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 596: {
597: struct mdoc_node *p;
598:
1.73 kristaps 599: p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
600: if (NULL == p)
601: return(0);
602: return(node_append(mdoc, p));
1.1 kristaps 603: }
604:
605:
1.23 kristaps 606: int
1.22 kristaps 607: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 608: int tok, struct mdoc_arg *args)
1.1 kristaps 609: {
610: struct mdoc_node *p;
611:
1.73 kristaps 612: p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
613: if (NULL == p)
614: return(0);
1.77 kristaps 615: p->args = args;
616: if (p->args)
1.53 kristaps 617: (args->refcnt)++;
1.73 kristaps 618: return(node_append(mdoc, p));
1.1 kristaps 619: }
620:
621:
1.23 kristaps 622: int
1.22 kristaps 623: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 624: int tok, struct mdoc_arg *args)
1.1 kristaps 625: {
626: struct mdoc_node *p;
627:
1.73 kristaps 628: p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
629: if (NULL == p)
630: return(0);
1.77 kristaps 631: p->args = args;
632: if (p->args)
1.53 kristaps 633: (args->refcnt)++;
1.73 kristaps 634: return(node_append(mdoc, p));
1.1 kristaps 635: }
636:
637:
1.23 kristaps 638: int
1.22 kristaps 639: mdoc_word_alloc(struct mdoc *mdoc,
640: int line, int pos, const char *word)
1.1 kristaps 641: {
642: struct mdoc_node *p;
643:
1.73 kristaps 644: p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
645: if (NULL == p)
646: return(0);
647: if (NULL == (p->string = strdup(word))) {
648: (void)verr(mdoc, EMALLOC);
649: return(0);
650: }
651: return(node_append(mdoc, p));
1.1 kristaps 652: }
653:
654:
1.53 kristaps 655: void
656: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 657: {
658:
1.53 kristaps 659: if (p->string)
660: free(p->string);
661: if (p->args)
662: mdoc_argv_free(p->args);
1.1 kristaps 663: free(p);
664: }
665:
666:
1.53 kristaps 667: void
668: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 669: {
670:
1.53 kristaps 671: if (p->child)
672: mdoc_node_freelist(p->child);
673: if (p->next)
674: mdoc_node_freelist(p->next);
1.1 kristaps 675:
1.53 kristaps 676: mdoc_node_free(p);
1.1 kristaps 677: }
678:
679:
1.53 kristaps 680: /*
681: * Parse free-form text, that is, a line that does not begin with the
682: * control character.
683: */
684: static int
1.68 kristaps 685: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 686: {
687:
1.68 kristaps 688: if (SEC_PROLOGUE == m->lastnamed)
1.73 kristaps 689: return(perr(m, line, 0, ETEXTPROL));
1.1 kristaps 690:
1.68 kristaps 691: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
1.73 kristaps 692: return(perr(m, line, 0, ENOBLANK));
1.68 kristaps 693:
694: if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53 kristaps 695: return(0);
1.1 kristaps 696:
1.68 kristaps 697: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 698: return(1);
1.1 kristaps 699: }
700:
701:
1.58 kristaps 702: static int
703: macrowarn(struct mdoc *m, int ln, const char *buf)
704: {
705: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.73 kristaps 706: return(mdoc_perr(m, ln, 1,
707: "unknown macro: %s%s",
1.59 kristaps 708: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 709: return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
710: "unknown macro: %s%s",
1.59 kristaps 711: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 712: }
713:
714:
715:
1.53 kristaps 716: /*
717: * Parse a macro line, that is, a line beginning with the control
718: * character.
719: */
720: int
721: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 722: {
1.53 kristaps 723: int i, c;
724: char mac[5];
1.1 kristaps 725:
1.63 kristaps 726: /* Comments and empties are quickly ignored. */
727:
728: if (0 == buf[1])
729: return(1);
730:
1.65 kristaps 731: if (' ' == buf[1]) {
1.63 kristaps 732: i = 2;
1.65 kristaps 733: while (buf[i] && ' ' == buf[i])
1.63 kristaps 734: i++;
735: if (0 == buf[i])
736: return(1);
1.73 kristaps 737: return(perr(m, ln, 1, ESPACE));
1.63 kristaps 738: }
1.1 kristaps 739:
1.53 kristaps 740: if (buf[1] && '\\' == buf[1])
741: if (buf[2] && '\"' == buf[2])
742: return(1);
1.1 kristaps 743:
1.53 kristaps 744: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 745:
1.53 kristaps 746: for (i = 1; i < 5; i++) {
747: if (0 == (mac[i - 1] = buf[i]))
748: break;
1.65 kristaps 749: else if (' ' == buf[i])
1.53 kristaps 750: break;
751: }
1.1 kristaps 752:
1.53 kristaps 753: mac[i - 1] = 0;
1.1 kristaps 754:
1.53 kristaps 755: if (i == 5 || i <= 2) {
1.58 kristaps 756: if ( ! macrowarn(m, ln, mac))
757: goto err;
758: return(1);
1.53 kristaps 759: }
760:
1.74 kristaps 761: if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
1.58 kristaps 762: if ( ! macrowarn(m, ln, mac))
763: goto err;
764: return(1);
1.53 kristaps 765: }
1.1 kristaps 766:
1.53 kristaps 767: /* The macro is sane. Jump to the next word. */
1.1 kristaps 768:
1.65 kristaps 769: while (buf[i] && ' ' == buf[i])
1.53 kristaps 770: i++;
1.1 kristaps 771:
1.53 kristaps 772: /* Begin recursive parse sequence. */
1.1 kristaps 773:
1.53 kristaps 774: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
775: goto err;
1.1 kristaps 776:
1.53 kristaps 777: return(1);
1.1 kristaps 778:
1.53 kristaps 779: err: /* Error out. */
1.1 kristaps 780:
1.53 kristaps 781: m->flags |= MDOC_HALT;
782: return(0);
1.1 kristaps 783: }
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