Annotation of mandoc/mdoc.c, Revision 1.87
1.87 ! kristaps 1: /* $Id: mdoc.c,v 1.86 2009/06/18 20:46:19 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:
1.85 kristaps 116: /*
117: * Frees volatile resources (parse tree, meta-data, fields).
118: */
1.73 kristaps 119: static void
120: mdoc_free1(struct mdoc *mdoc)
1.67 kristaps 121: {
122:
123: if (mdoc->first)
124: mdoc_node_freelist(mdoc->first);
125: if (mdoc->meta.title)
126: free(mdoc->meta.title);
127: if (mdoc->meta.os)
128: free(mdoc->meta.os);
129: if (mdoc->meta.name)
130: free(mdoc->meta.name);
131: if (mdoc->meta.arch)
132: free(mdoc->meta.arch);
133: if (mdoc->meta.vol)
134: free(mdoc->meta.vol);
1.73 kristaps 135: }
136:
137:
1.85 kristaps 138: /*
139: * Allocate all volatile resources (parse tree, meta-data, fields).
140: */
1.73 kristaps 141: static int
142: mdoc_alloc1(struct mdoc *mdoc)
143: {
1.67 kristaps 144:
145: bzero(&mdoc->meta, sizeof(struct mdoc_meta));
146: mdoc->flags = 0;
1.85 kristaps 147: mdoc->lastnamed = mdoc->lastsec = SEC_NONE;
1.70 kristaps 148: mdoc->last = calloc(1, sizeof(struct mdoc_node));
149: if (NULL == mdoc->last)
1.73 kristaps 150: return(0);
151:
1.70 kristaps 152: mdoc->first = mdoc->last;
1.67 kristaps 153: mdoc->last->type = MDOC_ROOT;
154: mdoc->next = MDOC_NEXT_CHILD;
1.73 kristaps 155: return(1);
156: }
157:
158:
159: /*
1.85 kristaps 160: * Free up volatile resources (see mdoc_free1()) then re-initialises the
161: * data with mdoc_alloc1(). After invocation, parse data has been reset
162: * and the parser is ready for re-invocation on a new tree; however,
163: * cross-parse non-volatile data is kept intact.
1.73 kristaps 164: */
165: int
166: mdoc_reset(struct mdoc *mdoc)
167: {
168:
169: mdoc_free1(mdoc);
170: return(mdoc_alloc1(mdoc));
1.67 kristaps 171: }
172:
173:
1.68 kristaps 174: /*
1.85 kristaps 175: * Completely free up all volatile and non-volatile parse resources.
176: * After invocation, the pointer is no longer usable.
1.68 kristaps 177: */
1.67 kristaps 178: void
1.38 kristaps 179: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 180: {
181:
1.73 kristaps 182: mdoc_free1(mdoc);
1.68 kristaps 183: if (mdoc->htab)
1.74 kristaps 184: mdoc_hash_free(mdoc->htab);
1.1 kristaps 185: free(mdoc);
186: }
187:
188:
1.85 kristaps 189: /*
190: * Allocate volatile and non-volatile parse resources.
191: */
1.1 kristaps 192: struct mdoc *
1.55 kristaps 193: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1 kristaps 194: {
195: struct mdoc *p;
196:
1.70 kristaps 197: if (NULL == (p = calloc(1, sizeof(struct mdoc))))
1.73 kristaps 198: return(NULL);
1.74 kristaps 199: if (cb)
200: (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1 kristaps 201:
202: p->data = data;
1.73 kristaps 203: p->pflags = pflags;
204:
1.74 kristaps 205: if (NULL == (p->htab = mdoc_hash_alloc())) {
206: free(p);
207: return(NULL);
208: } else if (mdoc_alloc1(p))
209: return(p);
1.1 kristaps 210:
1.73 kristaps 211: free(p);
212: return(NULL);
1.1 kristaps 213: }
214:
215:
1.68 kristaps 216: /*
217: * Climb back up the parse tree, validating open scopes. Mostly calls
1.85 kristaps 218: * through to macro_end() in macro.c.
1.68 kristaps 219: */
1.1 kristaps 220: int
1.72 kristaps 221: mdoc_endparse(struct mdoc *m)
1.20 kristaps 222: {
223:
1.72 kristaps 224: if (MDOC_HALT & m->flags)
1.20 kristaps 225: return(0);
1.72 kristaps 226: else if (mdoc_macroend(m))
1.20 kristaps 227: return(1);
1.72 kristaps 228: m->flags |= MDOC_HALT;
229: return(0);
1.20 kristaps 230: }
231:
232:
1.50 kristaps 233: /*
1.53 kristaps 234: * Main parse routine. Parses a single line -- really just hands off to
1.85 kristaps 235: * the macro (parsemacro()) or text parser (parsetext()).
1.50 kristaps 236: */
1.20 kristaps 237: int
1.53 kristaps 238: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 239: {
240:
1.53 kristaps 241: if (MDOC_HALT & m->flags)
1.20 kristaps 242: return(0);
1.50 kristaps 243:
1.53 kristaps 244: return('.' == *buf ? parsemacro(m, ln, buf) :
245: parsetext(m, ln, buf));
1.1 kristaps 246: }
247:
248:
249: int
1.31 kristaps 250: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
251: const char *fmt, ...)
1.1 kristaps 252: {
1.31 kristaps 253: char buf[256];
254: va_list ap;
1.1 kristaps 255:
256: if (NULL == mdoc->cb.mdoc_err)
257: return(0);
1.31 kristaps 258:
259: va_start(ap, fmt);
260: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
261: va_end(ap);
262: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 263: }
264:
265:
266: int
1.87 ! kristaps 267: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1 kristaps 268: {
1.31 kristaps 269: char buf[256];
270: va_list ap;
1.1 kristaps 271:
272: if (NULL == mdoc->cb.mdoc_warn)
273: return(0);
1.31 kristaps 274:
275: va_start(ap, fmt);
276: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
277: va_end(ap);
1.87 ! kristaps 278: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, buf));
1.1 kristaps 279: }
280:
281:
282: int
1.84 kristaps 283: mdoc_nerr(struct mdoc *mdoc, const struct mdoc_node *node,
284: const char *fmt, ...)
1.78 kristaps 285: {
286: char buf[256];
287: va_list ap;
288:
289: if (NULL == mdoc->cb.mdoc_err)
290: return(0);
291:
292: va_start(ap, fmt);
293: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
294: va_end(ap);
1.84 kristaps 295: return((*mdoc->cb.mdoc_err)(mdoc->data,
296: node->line, node->pos, buf));
1.78 kristaps 297: }
298:
299:
300: int
1.87 ! kristaps 301: mdoc_warn(struct mdoc *mdoc, const char *fmt, ...)
1.78 kristaps 302: {
303: char buf[256];
304: va_list ap;
305:
306: if (NULL == mdoc->cb.mdoc_warn)
307: return(0);
308:
309: va_start(ap, fmt);
310: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
311: va_end(ap);
1.87 ! kristaps 312: return((*mdoc->cb.mdoc_warn)(mdoc->data, mdoc->last->line,
! 313: mdoc->last->pos, buf));
1.78 kristaps 314: }
315:
316:
317: int
318: mdoc_err(struct mdoc *mdoc, const char *fmt, ...)
319: {
320: char buf[256];
321: va_list ap;
322:
323: if (NULL == mdoc->cb.mdoc_err)
324: return(0);
325:
326: va_start(ap, fmt);
327: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
328: va_end(ap);
329: return((*mdoc->cb.mdoc_err)(mdoc->data, mdoc->last->line,
1.84 kristaps 330: mdoc->last->pos, buf));
1.78 kristaps 331: }
332:
333:
334: int
1.87 ! kristaps 335: mdoc_pwarn(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
1.78 kristaps 336: {
337: char buf[256];
338: va_list ap;
339:
340: if (NULL == mdoc->cb.mdoc_warn)
341: return(0);
342:
343: va_start(ap, fmt);
344: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
345: va_end(ap);
1.87 ! kristaps 346: return((*mdoc->cb.mdoc_warn)(mdoc->data, line, pos, buf));
1.78 kristaps 347: }
348:
349: int
350: mdoc_perr(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
351: {
352: char buf[256];
353: va_list ap;
354:
355: if (NULL == mdoc->cb.mdoc_err)
356: return(0);
357:
358: va_start(ap, fmt);
359: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
360: va_end(ap);
361: return((*mdoc->cb.mdoc_err)(mdoc->data, line, pos, buf));
362: }
363:
364:
365: int
1.53 kristaps 366: mdoc_macro(struct mdoc *m, int tok,
367: int ln, int pp, int *pos, char *buf)
1.1 kristaps 368: {
369:
1.44 kristaps 370: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.85 kristaps 371: MDOC_PBODY & m->flags)
1.73 kristaps 372: return(perr(m, ln, pp, EPROLBODY));
1.44 kristaps 373: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.85 kristaps 374: ! (MDOC_PBODY & m->flags))
1.73 kristaps 375: return(perr(m, ln, pp, EBODYPROL));
1.53 kristaps 376:
377: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.73 kristaps 378: return(perr(m, ln, pp, ENOCALL));
1.53 kristaps 379:
380: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1 kristaps 381: }
382:
383:
1.23 kristaps 384: static int
1.73 kristaps 385: perr(struct mdoc *m, int line, int pos, enum merr type)
386: {
387: char *p;
388:
389: p = NULL;
390: switch (type) {
391: case (ENOCALL):
392: p = "not callable";
393: break;
394: case (EPROLBODY):
395: p = "macro disallowed in document body";
396: break;
397: case (EBODYPROL):
398: p = "macro disallowed in document prologue";
399: break;
400: case (EMALLOC):
401: p = "memory exhausted";
402: break;
403: case (ETEXTPROL):
404: p = "text disallowed in document prologue";
405: break;
406: case (ENOBLANK):
407: p = "blank lines disallowed in non-literal contexts";
408: break;
409: case (ESPACE):
410: p = "whitespace disallowed after delimiter";
411: break;
412: }
413: assert(p);
414: return(mdoc_perr(m, line, pos, p));
415: }
416:
417:
418: static int
419: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 420: {
421:
1.25 kristaps 422: assert(mdoc->last);
423: assert(mdoc->first);
424: assert(MDOC_ROOT != p->type);
1.1 kristaps 425:
1.13 kristaps 426: switch (mdoc->next) {
427: case (MDOC_NEXT_SIBLING):
1.6 kristaps 428: mdoc->last->next = p;
429: p->prev = mdoc->last;
1.13 kristaps 430: p->parent = mdoc->last->parent;
1.1 kristaps 431: break;
1.13 kristaps 432: case (MDOC_NEXT_CHILD):
433: mdoc->last->child = p;
1.1 kristaps 434: p->parent = mdoc->last;
435: break;
436: default:
1.13 kristaps 437: abort();
438: /* NOTREACHED */
1.1 kristaps 439: }
440:
1.86 kristaps 441: p->parent->nchild++;
442:
1.23 kristaps 443: if ( ! mdoc_valid_pre(mdoc, p))
444: return(0);
1.68 kristaps 445: if ( ! mdoc_action_pre(mdoc, p))
446: return(0);
1.27 kristaps 447:
448: switch (p->type) {
449: case (MDOC_HEAD):
450: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 451: p->parent->head = p;
1.27 kristaps 452: break;
453: case (MDOC_TAIL):
454: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 455: p->parent->tail = p;
1.27 kristaps 456: break;
457: case (MDOC_BODY):
458: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 459: p->parent->body = p;
1.27 kristaps 460: break;
461: default:
462: break;
463: }
464:
1.1 kristaps 465: mdoc->last = p;
1.71 kristaps 466:
467: switch (p->type) {
468: case (MDOC_TEXT):
469: if ( ! mdoc_valid_post(mdoc))
470: return(0);
471: if ( ! mdoc_action_post(mdoc))
472: return(0);
473: break;
474: default:
475: break;
476: }
477:
1.23 kristaps 478: return(1);
1.1 kristaps 479: }
480:
481:
1.45 kristaps 482: static struct mdoc_node *
1.73 kristaps 483: node_alloc(struct mdoc *mdoc, int line,
484: int pos, int tok, enum mdoc_type type)
1.45 kristaps 485: {
1.46 kristaps 486: struct mdoc_node *p;
487:
1.73 kristaps 488: if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
1.84 kristaps 489: (void)perr(mdoc, (mdoc)->last->line,
490: (mdoc)->last->pos, EMALLOC);
1.73 kristaps 491: return(NULL);
492: }
493:
1.46 kristaps 494: p->sec = mdoc->lastsec;
1.73 kristaps 495: p->line = line;
496: p->pos = pos;
497: p->tok = tok;
498: if (MDOC_TEXT != (p->type = type))
499: assert(p->tok >= 0);
1.45 kristaps 500:
1.46 kristaps 501: return(p);
1.45 kristaps 502: }
503:
504:
1.23 kristaps 505: int
1.22 kristaps 506: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17 kristaps 507: {
508: struct mdoc_node *p;
509:
1.73 kristaps 510: p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
511: if (NULL == p)
512: return(0);
513: return(node_append(mdoc, p));
1.17 kristaps 514: }
515:
516:
1.23 kristaps 517: int
1.22 kristaps 518: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 519: {
520: struct mdoc_node *p;
521:
522: assert(mdoc->first);
523: assert(mdoc->last);
524:
1.73 kristaps 525: p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
526: if (NULL == p)
527: return(0);
528: return(node_append(mdoc, p));
1.1 kristaps 529: }
530:
531:
1.23 kristaps 532: int
1.22 kristaps 533: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 534: {
535: struct mdoc_node *p;
536:
1.73 kristaps 537: p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
538: if (NULL == p)
539: return(0);
540: return(node_append(mdoc, p));
1.1 kristaps 541: }
542:
543:
1.23 kristaps 544: int
1.22 kristaps 545: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 546: int tok, struct mdoc_arg *args)
1.1 kristaps 547: {
548: struct mdoc_node *p;
549:
1.73 kristaps 550: p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
551: if (NULL == p)
552: return(0);
1.77 kristaps 553: p->args = args;
554: if (p->args)
1.53 kristaps 555: (args->refcnt)++;
1.73 kristaps 556: return(node_append(mdoc, p));
1.1 kristaps 557: }
558:
559:
1.23 kristaps 560: int
1.22 kristaps 561: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 562: int tok, struct mdoc_arg *args)
1.1 kristaps 563: {
564: struct mdoc_node *p;
565:
1.73 kristaps 566: p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
567: if (NULL == p)
568: return(0);
1.77 kristaps 569: p->args = args;
570: if (p->args)
1.53 kristaps 571: (args->refcnt)++;
1.73 kristaps 572: return(node_append(mdoc, p));
1.1 kristaps 573: }
574:
575:
1.23 kristaps 576: int
1.22 kristaps 577: mdoc_word_alloc(struct mdoc *mdoc,
578: int line, int pos, const char *word)
1.1 kristaps 579: {
580: struct mdoc_node *p;
581:
1.73 kristaps 582: p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
583: if (NULL == p)
584: return(0);
585: if (NULL == (p->string = strdup(word))) {
1.84 kristaps 586: (void)perr(mdoc, (mdoc)->last->line,
587: (mdoc)->last->pos, EMALLOC);
1.73 kristaps 588: return(0);
589: }
590: return(node_append(mdoc, p));
1.1 kristaps 591: }
592:
593:
1.53 kristaps 594: void
595: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 596: {
597:
1.86 kristaps 598: if (p->parent)
599: p->parent->nchild--;
1.53 kristaps 600: if (p->string)
601: free(p->string);
602: if (p->args)
603: mdoc_argv_free(p->args);
1.1 kristaps 604: free(p);
605: }
606:
607:
1.53 kristaps 608: void
609: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 610: {
611:
1.53 kristaps 612: if (p->child)
613: mdoc_node_freelist(p->child);
614: if (p->next)
615: mdoc_node_freelist(p->next);
1.1 kristaps 616:
1.86 kristaps 617: assert(0 == p->nchild);
1.53 kristaps 618: mdoc_node_free(p);
1.1 kristaps 619: }
620:
621:
1.53 kristaps 622: /*
623: * Parse free-form text, that is, a line that does not begin with the
624: * control character.
625: */
626: static int
1.68 kristaps 627: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 628: {
629:
1.85 kristaps 630: if (SEC_NONE == m->lastnamed)
1.73 kristaps 631: return(perr(m, line, 0, ETEXTPROL));
1.1 kristaps 632:
1.68 kristaps 633: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
1.73 kristaps 634: return(perr(m, line, 0, ENOBLANK));
1.68 kristaps 635:
636: if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53 kristaps 637: return(0);
1.1 kristaps 638:
1.68 kristaps 639: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 640: return(1);
1.1 kristaps 641: }
642:
643:
1.58 kristaps 644: static int
645: macrowarn(struct mdoc *m, int ln, const char *buf)
646: {
647: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.73 kristaps 648: return(mdoc_perr(m, ln, 1,
649: "unknown macro: %s%s",
1.59 kristaps 650: buf, strlen(buf) > 3 ? "..." : ""));
1.87 ! kristaps 651: return(mdoc_pwarn(m, ln, 1, "unknown macro: %s%s",
1.59 kristaps 652: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 653: }
654:
655:
1.53 kristaps 656: /*
657: * Parse a macro line, that is, a line beginning with the control
658: * character.
659: */
660: int
661: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 662: {
1.53 kristaps 663: int i, c;
664: char mac[5];
1.1 kristaps 665:
1.81 kristaps 666: /* Empty lines are ignored. */
1.63 kristaps 667:
668: if (0 == buf[1])
669: return(1);
670:
1.65 kristaps 671: if (' ' == buf[1]) {
1.63 kristaps 672: i = 2;
1.65 kristaps 673: while (buf[i] && ' ' == buf[i])
1.63 kristaps 674: i++;
675: if (0 == buf[i])
676: return(1);
1.73 kristaps 677: return(perr(m, ln, 1, ESPACE));
1.63 kristaps 678: }
1.1 kristaps 679:
1.53 kristaps 680: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 681:
1.53 kristaps 682: for (i = 1; i < 5; i++) {
683: if (0 == (mac[i - 1] = buf[i]))
684: break;
1.65 kristaps 685: else if (' ' == buf[i])
1.53 kristaps 686: break;
687: }
1.1 kristaps 688:
1.53 kristaps 689: mac[i - 1] = 0;
1.1 kristaps 690:
1.53 kristaps 691: if (i == 5 || i <= 2) {
1.58 kristaps 692: if ( ! macrowarn(m, ln, mac))
693: goto err;
694: return(1);
1.53 kristaps 695: }
696:
1.74 kristaps 697: if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
1.58 kristaps 698: if ( ! macrowarn(m, ln, mac))
699: goto err;
700: return(1);
1.53 kristaps 701: }
1.1 kristaps 702:
1.53 kristaps 703: /* The macro is sane. Jump to the next word. */
1.1 kristaps 704:
1.65 kristaps 705: while (buf[i] && ' ' == buf[i])
1.53 kristaps 706: i++;
1.1 kristaps 707:
1.53 kristaps 708: /* Begin recursive parse sequence. */
1.1 kristaps 709:
1.53 kristaps 710: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
711: goto err;
1.1 kristaps 712:
1.53 kristaps 713: return(1);
1.1 kristaps 714:
1.53 kristaps 715: err: /* Error out. */
1.1 kristaps 716:
1.53 kristaps 717: m->flags |= MDOC_HALT;
718: return(0);
1.1 kristaps 719: }
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