Annotation of mandoc/mdoc.c, Revision 1.116
1.116 ! kristaps 1: /* $Id: mdoc.c,v 1.115 2010/01/07 10:05:24 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: */
1.114 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.106 kristaps 21: #include <sys/types.h>
22:
1.1 kristaps 23: #include <assert.h>
24: #include <ctype.h>
25: #include <stdarg.h>
1.73 kristaps 26: #include <stdio.h>
1.1 kristaps 27: #include <stdlib.h>
28: #include <string.h>
29:
1.70 kristaps 30: #include "libmdoc.h"
1.113 kristaps 31: #include "libmandoc.h"
1.1 kristaps 32:
1.89 kristaps 33: const char *const __mdoc_merrnames[MERRMAX] = {
34: "trailing whitespace", /* ETAILWS */
35: "unexpected quoted parameter", /* EQUOTPARM */
36: "unterminated quoted parameter", /* EQUOTTERM */
37: "argument parameter suggested", /* EARGVAL */
38: "macro disallowed in prologue", /* EBODYPROL */
39: "macro disallowed in body", /* EPROLBODY */
40: "text disallowed in prologue", /* ETEXTPROL */
41: "blank line disallowed", /* ENOBLANK */
42: "text parameter too long", /* ETOOLONG */
43: "invalid escape sequence", /* EESCAPE */
44: "invalid character", /* EPRINT */
45: "document has no body", /* ENODAT */
46: "document has no prologue", /* ENOPROLOGUE */
47: "expected line arguments", /* ELINE */
48: "invalid AT&T argument", /* EATT */
49: "default name not yet set", /* ENAME */
50: "missing list type", /* ELISTTYPE */
51: "missing display type", /* EDISPTYPE */
52: "too many display types", /* EMULTIDISP */
53: "too many list types", /* EMULTILIST */
54: "NAME section must be first", /* ESECNAME */
55: "badly-formed NAME section", /* ENAMESECINC */
56: "argument repeated", /* EARGREP */
57: "expected boolean parameter", /* EBOOL */
58: "inconsistent column syntax", /* ECOLMIS */
59: "nested display invalid", /* ENESTDISP */
60: "width argument missing", /* EMISSWIDTH */
61: "invalid section for this manual section", /* EWRONGMSEC */
62: "section out of conventional order", /* ESECOOO */
63: "section repeated", /* ESECREP */
64: "invalid standard argument", /* EBADSTAND */
65: "multi-line arguments discouraged", /* ENOMULTILINE */
66: "multi-line arguments suggested", /* EMULTILINE */
67: "line arguments discouraged", /* ENOLINE */
68: "prologue macro out of conventional order", /* EPROLOOO */
69: "prologue macro repeated", /* EPROLREP */
70: "invalid manual section", /* EBADMSEC */
71: "invalid section", /* EBADSEC */
72: "invalid font mode", /* EFONT */
73: "invalid date syntax", /* EBADDATE */
74: "invalid number format", /* ENUMFMT */
75: "superfluous width argument", /* ENOWIDTH */
76: "system: utsname error", /* EUTSNAME */
77: "obsolete macro", /* EOBS */
78: "end-of-line scope violation", /* EIMPBRK */
79: "empty macro ignored", /* EIGNE */
80: "unclosed explicit scope", /* EOPEN */
81: "unterminated quoted phrase", /* EQUOTPHR */
82: "closure macro without prior context", /* ENOCTX */
1.107 kristaps 83: "no description found for library", /* ELIB */
84: "bad child for parent context", /* EBADCHILD */
1.109 kristaps 85: "list arguments preceding type", /* ENOTYPE */
1.89 kristaps 86: };
87:
1.1 kristaps 88: const char *const __mdoc_macronames[MDOC_MAX] = {
1.82 kristaps 89: "Ap", "Dd", "Dt", "Os",
1.1 kristaps 90: "Sh", "Ss", "Pp", "D1",
91: "Dl", "Bd", "Ed", "Bl",
92: "El", "It", "Ad", "An",
93: "Ar", "Cd", "Cm", "Dv",
94: "Er", "Ev", "Ex", "Fa",
95: "Fd", "Fl", "Fn", "Ft",
96: "Ic", "In", "Li", "Nd",
97: "Nm", "Op", "Ot", "Pa",
98: "Rv", "St", "Va", "Vt",
99: /* LINTED */
1.114 kristaps 100: "Xr", "%A", "%B", "%D",
1.1 kristaps 101: /* LINTED */
1.114 kristaps 102: "%I", "%J", "%N", "%O",
1.1 kristaps 103: /* LINTED */
1.114 kristaps 104: "%P", "%R", "%T", "%V",
1.1 kristaps 105: "Ac", "Ao", "Aq", "At",
106: "Bc", "Bf", "Bo", "Bq",
107: "Bsx", "Bx", "Db", "Dc",
108: "Do", "Dq", "Ec", "Ef",
109: "Em", "Eo", "Fx", "Ms",
110: "No", "Ns", "Nx", "Ox",
111: "Pc", "Pf", "Po", "Pq",
112: "Qc", "Ql", "Qo", "Qq",
113: "Re", "Rs", "Sc", "So",
114: "Sq", "Sm", "Sx", "Sy",
115: "Tn", "Ux", "Xc", "Xo",
116: "Fo", "Fc", "Oo", "Oc",
117: "Bk", "Ek", "Bt", "Hf",
1.82 kristaps 118: "Fr", "Ud", "Lb", "Lp",
119: "Lk", "Mt", "Brq", "Bro",
1.64 kristaps 120: /* LINTED */
1.114 kristaps 121: "Brc", "%C", "Es", "En",
1.69 kristaps 122: /* LINTED */
1.114 kristaps 123: "Dx", "%Q", "br", "sp",
1.110 kristaps 124: /* LINTED */
1.114 kristaps 125: "%U"
1.1 kristaps 126: };
127:
128: const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
129: "split", "nosplit", "ragged",
130: "unfilled", "literal", "file",
131: "offset", "bullet", "dash",
132: "hyphen", "item", "enum",
133: "tag", "diag", "hang",
134: "ohang", "inset", "column",
135: "width", "compact", "std",
1.52 kristaps 136: "filled", "words", "emphasis",
1.108 kristaps 137: "symbolic", "nested", "centered"
1.1 kristaps 138: };
139:
140: const char * const *mdoc_macronames = __mdoc_macronames;
141: const char * const *mdoc_argnames = __mdoc_argnames;
142:
1.73 kristaps 143: static void mdoc_free1(struct mdoc *);
1.113 kristaps 144: static void mdoc_alloc1(struct mdoc *);
1.73 kristaps 145: static struct mdoc_node *node_alloc(struct mdoc *, int, int,
146: int, enum mdoc_type);
147: static int node_append(struct mdoc *,
1.71 kristaps 148: struct mdoc_node *);
149: static int parsetext(struct mdoc *, int, char *);
150: static int parsemacro(struct mdoc *, int, char *);
151: static int macrowarn(struct mdoc *, int, const char *);
1.91 kristaps 152: static int pstring(struct mdoc *, int, int,
153: const char *, size_t);
1.88 kristaps 154:
1.1 kristaps 155: const struct mdoc_node *
1.71 kristaps 156: mdoc_node(const struct mdoc *m)
1.1 kristaps 157: {
158:
1.71 kristaps 159: return(MDOC_HALT & m->flags ? NULL : m->first);
1.1 kristaps 160: }
161:
162:
1.37 kristaps 163: const struct mdoc_meta *
1.71 kristaps 164: mdoc_meta(const struct mdoc *m)
1.37 kristaps 165: {
166:
1.71 kristaps 167: return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37 kristaps 168: }
169:
170:
1.85 kristaps 171: /*
172: * Frees volatile resources (parse tree, meta-data, fields).
173: */
1.73 kristaps 174: static void
175: mdoc_free1(struct mdoc *mdoc)
1.67 kristaps 176: {
177:
178: if (mdoc->first)
179: mdoc_node_freelist(mdoc->first);
180: if (mdoc->meta.title)
181: free(mdoc->meta.title);
182: if (mdoc->meta.os)
183: free(mdoc->meta.os);
184: if (mdoc->meta.name)
185: free(mdoc->meta.name);
186: if (mdoc->meta.arch)
187: free(mdoc->meta.arch);
188: if (mdoc->meta.vol)
189: free(mdoc->meta.vol);
1.73 kristaps 190: }
191:
192:
1.85 kristaps 193: /*
194: * Allocate all volatile resources (parse tree, meta-data, fields).
195: */
1.113 kristaps 196: static void
1.73 kristaps 197: mdoc_alloc1(struct mdoc *mdoc)
198: {
1.67 kristaps 199:
1.112 kristaps 200: memset(&mdoc->meta, 0, sizeof(struct mdoc_meta));
1.67 kristaps 201: mdoc->flags = 0;
1.85 kristaps 202: mdoc->lastnamed = mdoc->lastsec = SEC_NONE;
1.113 kristaps 203: mdoc->last = mandoc_calloc(1, sizeof(struct mdoc_node));
1.70 kristaps 204: mdoc->first = mdoc->last;
1.67 kristaps 205: mdoc->last->type = MDOC_ROOT;
206: mdoc->next = MDOC_NEXT_CHILD;
1.73 kristaps 207: }
208:
209:
210: /*
1.85 kristaps 211: * Free up volatile resources (see mdoc_free1()) then re-initialises the
212: * data with mdoc_alloc1(). After invocation, parse data has been reset
213: * and the parser is ready for re-invocation on a new tree; however,
214: * cross-parse non-volatile data is kept intact.
1.73 kristaps 215: */
1.113 kristaps 216: void
1.73 kristaps 217: mdoc_reset(struct mdoc *mdoc)
218: {
219:
220: mdoc_free1(mdoc);
1.113 kristaps 221: mdoc_alloc1(mdoc);
1.67 kristaps 222: }
223:
224:
1.68 kristaps 225: /*
1.85 kristaps 226: * Completely free up all volatile and non-volatile parse resources.
227: * After invocation, the pointer is no longer usable.
1.68 kristaps 228: */
1.67 kristaps 229: void
1.38 kristaps 230: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 231: {
232:
1.73 kristaps 233: mdoc_free1(mdoc);
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:
1.113 kristaps 246: p = mandoc_calloc(1, sizeof(struct mdoc));
247:
1.74 kristaps 248: if (cb)
1.113 kristaps 249: memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.105 kristaps 250:
1.1 kristaps 251: p->data = data;
1.73 kristaps 252: p->pflags = pflags;
253:
1.113 kristaps 254: mdoc_hash_init();
255: mdoc_alloc1(p);
256: return(p);
1.1 kristaps 257: }
258:
259:
1.68 kristaps 260: /*
261: * Climb back up the parse tree, validating open scopes. Mostly calls
1.85 kristaps 262: * through to macro_end() in macro.c.
1.68 kristaps 263: */
1.1 kristaps 264: int
1.72 kristaps 265: mdoc_endparse(struct mdoc *m)
1.20 kristaps 266: {
267:
1.72 kristaps 268: if (MDOC_HALT & m->flags)
1.20 kristaps 269: return(0);
1.72 kristaps 270: else if (mdoc_macroend(m))
1.20 kristaps 271: return(1);
1.72 kristaps 272: m->flags |= MDOC_HALT;
273: return(0);
1.20 kristaps 274: }
275:
276:
1.50 kristaps 277: /*
1.53 kristaps 278: * Main parse routine. Parses a single line -- really just hands off to
1.85 kristaps 279: * the macro (parsemacro()) or text parser (parsetext()).
1.50 kristaps 280: */
1.20 kristaps 281: int
1.53 kristaps 282: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 283: {
284:
1.53 kristaps 285: if (MDOC_HALT & m->flags)
1.20 kristaps 286: return(0);
1.50 kristaps 287:
1.53 kristaps 288: return('.' == *buf ? parsemacro(m, ln, buf) :
289: parsetext(m, ln, buf));
1.1 kristaps 290: }
291:
292:
293: int
1.31 kristaps 294: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
295: const char *fmt, ...)
1.1 kristaps 296: {
1.31 kristaps 297: char buf[256];
298: va_list ap;
1.1 kristaps 299:
300: if (NULL == mdoc->cb.mdoc_err)
301: return(0);
1.31 kristaps 302:
303: va_start(ap, fmt);
304: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
305: va_end(ap);
1.88 kristaps 306:
1.31 kristaps 307: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 308: }
309:
310:
311: int
1.87 kristaps 312: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1 kristaps 313: {
1.31 kristaps 314: char buf[256];
315: va_list ap;
1.1 kristaps 316:
317: if (NULL == mdoc->cb.mdoc_warn)
318: return(0);
1.31 kristaps 319:
320: va_start(ap, fmt);
321: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
322: va_end(ap);
1.88 kristaps 323:
1.87 kristaps 324: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, buf));
1.1 kristaps 325: }
326:
327:
328: int
1.88 kristaps 329: mdoc_err(struct mdoc *m, int line, int pos, int iserr, enum merr type)
1.78 kristaps 330: {
1.89 kristaps 331: const char *p;
1.88 kristaps 332:
1.89 kristaps 333: p = __mdoc_merrnames[(int)type];
1.73 kristaps 334: assert(p);
1.88 kristaps 335:
336: if (iserr)
337: return(mdoc_verr(m, line, pos, p));
338:
339: return(mdoc_vwarn(m, line, pos, p));
340: }
341:
342:
343: int
344: mdoc_macro(struct mdoc *m, int tok,
345: int ln, int pp, int *pos, char *buf)
346: {
1.97 kristaps 347: /*
348: * If we're in the prologue, deny "body" macros. Similarly, if
349: * we're in the body, deny prologue calls.
350: */
1.88 kristaps 351: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
352: MDOC_PBODY & m->flags)
353: return(mdoc_perr(m, ln, pp, EPROLBODY));
354: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
355: ! (MDOC_PBODY & m->flags))
356: return(mdoc_perr(m, ln, pp, EBODYPROL));
357:
358: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.73 kristaps 359: }
360:
361:
362: static int
363: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 364: {
365:
1.25 kristaps 366: assert(mdoc->last);
367: assert(mdoc->first);
368: assert(MDOC_ROOT != p->type);
1.1 kristaps 369:
1.13 kristaps 370: switch (mdoc->next) {
371: case (MDOC_NEXT_SIBLING):
1.6 kristaps 372: mdoc->last->next = p;
373: p->prev = mdoc->last;
1.13 kristaps 374: p->parent = mdoc->last->parent;
1.1 kristaps 375: break;
1.13 kristaps 376: case (MDOC_NEXT_CHILD):
377: mdoc->last->child = p;
1.1 kristaps 378: p->parent = mdoc->last;
379: break;
380: default:
1.13 kristaps 381: abort();
382: /* NOTREACHED */
1.1 kristaps 383: }
384:
1.86 kristaps 385: p->parent->nchild++;
386:
1.23 kristaps 387: if ( ! mdoc_valid_pre(mdoc, p))
388: return(0);
1.68 kristaps 389: if ( ! mdoc_action_pre(mdoc, p))
390: return(0);
1.27 kristaps 391:
392: switch (p->type) {
393: case (MDOC_HEAD):
394: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 395: p->parent->head = p;
1.27 kristaps 396: break;
397: case (MDOC_TAIL):
398: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 399: p->parent->tail = p;
1.27 kristaps 400: break;
401: case (MDOC_BODY):
402: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 403: p->parent->body = p;
1.27 kristaps 404: break;
405: default:
406: break;
407: }
408:
1.1 kristaps 409: mdoc->last = p;
1.71 kristaps 410:
411: switch (p->type) {
412: case (MDOC_TEXT):
413: if ( ! mdoc_valid_post(mdoc))
414: return(0);
415: if ( ! mdoc_action_post(mdoc))
416: return(0);
417: break;
418: default:
419: break;
420: }
421:
1.23 kristaps 422: return(1);
1.1 kristaps 423: }
424:
425:
1.45 kristaps 426: static struct mdoc_node *
1.91 kristaps 427: node_alloc(struct mdoc *m, int line,
1.73 kristaps 428: int pos, int tok, enum mdoc_type type)
1.45 kristaps 429: {
1.46 kristaps 430: struct mdoc_node *p;
431:
1.113 kristaps 432: p = mandoc_calloc(1, sizeof(struct mdoc_node));
1.91 kristaps 433: p->sec = m->lastsec;
1.73 kristaps 434: p->line = line;
435: p->pos = pos;
436: p->tok = tok;
437: if (MDOC_TEXT != (p->type = type))
438: assert(p->tok >= 0);
1.45 kristaps 439:
1.46 kristaps 440: return(p);
1.45 kristaps 441: }
442:
443:
1.23 kristaps 444: int
1.91 kristaps 445: mdoc_tail_alloc(struct mdoc *m, int line, int pos, int tok)
1.17 kristaps 446: {
447: struct mdoc_node *p;
448:
1.91 kristaps 449: p = node_alloc(m, line, pos, tok, MDOC_TAIL);
1.102 kristaps 450: if ( ! node_append(m, p))
451: return(0);
452: m->next = MDOC_NEXT_CHILD;
453: return(1);
1.17 kristaps 454: }
455:
456:
1.23 kristaps 457: int
1.91 kristaps 458: mdoc_head_alloc(struct mdoc *m, int line, int pos, int tok)
1.1 kristaps 459: {
460: struct mdoc_node *p;
461:
1.91 kristaps 462: assert(m->first);
463: assert(m->last);
1.1 kristaps 464:
1.91 kristaps 465: p = node_alloc(m, line, pos, tok, MDOC_HEAD);
1.102 kristaps 466: if ( ! node_append(m, p))
467: return(0);
468: m->next = MDOC_NEXT_CHILD;
469: return(1);
1.1 kristaps 470: }
471:
472:
1.23 kristaps 473: int
1.91 kristaps 474: mdoc_body_alloc(struct mdoc *m, int line, int pos, int tok)
1.1 kristaps 475: {
476: struct mdoc_node *p;
477:
1.91 kristaps 478: p = node_alloc(m, line, pos, tok, MDOC_BODY);
1.102 kristaps 479: if ( ! node_append(m, p))
480: return(0);
481: m->next = MDOC_NEXT_CHILD;
482: return(1);
1.1 kristaps 483: }
484:
485:
1.23 kristaps 486: int
1.91 kristaps 487: mdoc_block_alloc(struct mdoc *m, int line, int pos,
1.53 kristaps 488: int tok, struct mdoc_arg *args)
1.1 kristaps 489: {
490: struct mdoc_node *p;
491:
1.91 kristaps 492: p = node_alloc(m, line, pos, tok, MDOC_BLOCK);
1.77 kristaps 493: p->args = args;
494: if (p->args)
1.53 kristaps 495: (args->refcnt)++;
1.102 kristaps 496: if ( ! node_append(m, p))
497: return(0);
498: m->next = MDOC_NEXT_CHILD;
499: return(1);
1.1 kristaps 500: }
501:
502:
1.23 kristaps 503: int
1.91 kristaps 504: mdoc_elem_alloc(struct mdoc *m, int line, int pos,
1.53 kristaps 505: int tok, struct mdoc_arg *args)
1.1 kristaps 506: {
507: struct mdoc_node *p;
508:
1.91 kristaps 509: p = node_alloc(m, line, pos, tok, MDOC_ELEM);
1.77 kristaps 510: p->args = args;
511: if (p->args)
1.53 kristaps 512: (args->refcnt)++;
1.102 kristaps 513: if ( ! node_append(m, p))
514: return(0);
515: m->next = MDOC_NEXT_CHILD;
516: return(1);
1.1 kristaps 517: }
518:
519:
1.91 kristaps 520: static int
521: pstring(struct mdoc *m, int line, int pos, const char *p, size_t len)
1.1 kristaps 522: {
1.91 kristaps 523: struct mdoc_node *n;
524: size_t sv;
1.1 kristaps 525:
1.91 kristaps 526: n = node_alloc(m, line, pos, -1, MDOC_TEXT);
1.113 kristaps 527: n->string = mandoc_malloc(len + 1);
1.91 kristaps 528: sv = strlcpy(n->string, p, len + 1);
529:
530: /* Prohibit truncation. */
531: assert(sv < len + 1);
532:
1.101 kristaps 533: if ( ! node_append(m, n))
534: return(0);
535: m->next = MDOC_NEXT_SIBLING;
536: return(1);
1.91 kristaps 537: }
538:
539:
540: int
541: mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p)
542: {
543:
544: return(pstring(m, line, pos, p, strlen(p)));
1.1 kristaps 545: }
546:
547:
1.53 kristaps 548: void
549: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 550: {
551:
1.86 kristaps 552: if (p->parent)
553: p->parent->nchild--;
1.53 kristaps 554: if (p->string)
555: free(p->string);
556: if (p->args)
557: mdoc_argv_free(p->args);
1.1 kristaps 558: free(p);
559: }
560:
561:
1.53 kristaps 562: void
563: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 564: {
565:
1.53 kristaps 566: if (p->child)
567: mdoc_node_freelist(p->child);
568: if (p->next)
569: mdoc_node_freelist(p->next);
1.1 kristaps 570:
1.86 kristaps 571: assert(0 == p->nchild);
1.53 kristaps 572: mdoc_node_free(p);
1.1 kristaps 573: }
574:
575:
1.53 kristaps 576: /*
577: * Parse free-form text, that is, a line that does not begin with the
578: * control character.
579: */
580: static int
1.68 kristaps 581: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 582: {
1.91 kristaps 583: int i, j;
1.116 ! kristaps 584: char sv;
1.1 kristaps 585:
1.85 kristaps 586: if (SEC_NONE == m->lastnamed)
1.88 kristaps 587: return(mdoc_perr(m, line, 0, ETEXTPROL));
1.91 kristaps 588:
589: /*
590: * If in literal mode, then pass the buffer directly to the
591: * back-end, as it should be preserved as a single term.
592: */
593:
1.101 kristaps 594: if (MDOC_LITERAL & m->flags)
595: return(mdoc_word_alloc(m, line, 0, buf));
1.91 kristaps 596:
597: /* Disallow blank/white-space lines in non-literal mode. */
1.1 kristaps 598:
1.91 kristaps 599: for (i = 0; ' ' == buf[i]; i++)
600: /* Skip leading whitespace. */ ;
1.115 kristaps 601:
602: if ('\0' == buf[i])
1.88 kristaps 603: return(mdoc_perr(m, line, 0, ENOBLANK));
1.68 kristaps 604:
1.91 kristaps 605: /*
606: * Break apart a free-form line into tokens. Spaces are
607: * stripped out of the input.
608: */
609:
610: for (j = i; buf[i]; i++) {
611: if (' ' != buf[i])
612: continue;
613:
614: /* Escaped whitespace. */
615: if (i && ' ' == buf[i] && '\\' == buf[i - 1])
616: continue;
617:
1.116 ! kristaps 618: sv = buf[i];
1.115 kristaps 619: buf[i++] = '\0';
620:
1.91 kristaps 621: if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
622: return(0);
623:
1.116 ! kristaps 624: /* Trailing whitespace? Check at overwritten byte. */
! 625:
! 626: if (' ' == sv && '\0' == buf[i])
! 627: if ( ! mdoc_pwarn(m, line, i - 1, ETAILWS))
! 628: return(0);
! 629:
1.91 kristaps 630: for ( ; ' ' == buf[i]; i++)
631: /* Skip trailing whitespace. */ ;
632:
633: j = i;
1.116 ! kristaps 634:
! 635: /* Trailing whitespace? */
! 636:
! 637: if (' ' == buf[i - 1] && '\0' == buf[i])
! 638: if ( ! mdoc_pwarn(m, line, i - 1, ETAILWS))
! 639: return(0);
! 640:
1.115 kristaps 641: if ('\0' == buf[i])
1.91 kristaps 642: break;
643: }
644:
645: if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
1.53 kristaps 646: return(0);
1.1 kristaps 647:
1.68 kristaps 648: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 649: return(1);
1.1 kristaps 650: }
651:
652:
1.91 kristaps 653:
1.58 kristaps 654: static int
655: macrowarn(struct mdoc *m, int ln, const char *buf)
656: {
657: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.96 kristaps 658: return(mdoc_verr(m, ln, 0,
1.73 kristaps 659: "unknown macro: %s%s",
1.59 kristaps 660: buf, strlen(buf) > 3 ? "..." : ""));
1.96 kristaps 661: return(mdoc_vwarn(m, ln, 0, "unknown macro: %s%s",
1.59 kristaps 662: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 663: }
664:
665:
1.53 kristaps 666: /*
667: * Parse a macro line, that is, a line beginning with the control
668: * character.
669: */
670: int
671: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 672: {
1.103 kristaps 673: int i, j, c;
1.53 kristaps 674: char mac[5];
1.1 kristaps 675:
1.81 kristaps 676: /* Empty lines are ignored. */
1.63 kristaps 677:
1.115 kristaps 678: if ('\0' == buf[1])
1.63 kristaps 679: return(1);
680:
1.100 kristaps 681: i = 1;
682:
683: /* Accept whitespace after the initial control char. */
684:
685: if (' ' == buf[i]) {
686: i++;
1.65 kristaps 687: while (buf[i] && ' ' == buf[i])
1.63 kristaps 688: i++;
1.115 kristaps 689: if ('\0' == buf[i])
1.63 kristaps 690: return(1);
691: }
1.1 kristaps 692:
1.53 kristaps 693: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 694:
1.100 kristaps 695: for (j = 0; j < 4; j++, i++) {
1.115 kristaps 696: if ('\0' == (mac[j] = buf[i]))
1.53 kristaps 697: break;
1.65 kristaps 698: else if (' ' == buf[i])
1.53 kristaps 699: break;
1.104 kristaps 700:
701: /* Check for invalid characters. */
702:
703: if (isgraph((u_char)buf[i]))
704: continue;
705: return(mdoc_perr(m, ln, i, EPRINT));
1.53 kristaps 706: }
1.1 kristaps 707:
1.100 kristaps 708: mac[j] = 0;
1.1 kristaps 709:
1.100 kristaps 710: if (j == 4 || j < 2) {
1.58 kristaps 711: if ( ! macrowarn(m, ln, mac))
712: goto err;
713: return(1);
1.53 kristaps 714: }
715:
1.105 kristaps 716: if (MDOC_MAX == (c = mdoc_hash_find(mac))) {
1.58 kristaps 717: if ( ! macrowarn(m, ln, mac))
718: goto err;
719: return(1);
1.53 kristaps 720: }
1.1 kristaps 721:
1.53 kristaps 722: /* The macro is sane. Jump to the next word. */
1.1 kristaps 723:
1.65 kristaps 724: while (buf[i] && ' ' == buf[i])
1.53 kristaps 725: i++;
1.1 kristaps 726:
1.115 kristaps 727: /* Trailing whitespace? */
728:
729: if ('\0' == buf[i] && ' ' == buf[i - 1])
730: if ( ! mdoc_pwarn(m, ln, i - 1, ETAILWS))
731: goto err;
732:
1.98 kristaps 733: /*
734: * Begin recursive parse sequence. Since we're at the start of
735: * the line, we don't need to do callable/parseable checks.
736: */
1.103 kristaps 737: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
1.53 kristaps 738: goto err;
1.1 kristaps 739:
1.53 kristaps 740: return(1);
1.1 kristaps 741:
1.53 kristaps 742: err: /* Error out. */
1.1 kristaps 743:
1.53 kristaps 744: m->flags |= MDOC_HALT;
745: return(0);
1.1 kristaps 746: }
1.100 kristaps 747:
748:
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