Annotation of mandoc/mdoc.c, Revision 1.120
1.120 ! kristaps 1: /* $Id: mdoc.c,v 1.119 2010/04/03 13:02:35 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>
1.120 ! kristaps 29: #include <time.h>
1.1 kristaps 30:
1.70 kristaps 31: #include "libmdoc.h"
1.113 kristaps 32: #include "libmandoc.h"
1.1 kristaps 33:
1.89 kristaps 34: const char *const __mdoc_merrnames[MERRMAX] = {
35: "trailing whitespace", /* ETAILWS */
36: "unexpected quoted parameter", /* EQUOTPARM */
37: "unterminated quoted parameter", /* EQUOTTERM */
38: "argument parameter suggested", /* EARGVAL */
39: "macro disallowed in prologue", /* EBODYPROL */
40: "macro disallowed in body", /* EPROLBODY */
41: "text disallowed in prologue", /* ETEXTPROL */
42: "blank line disallowed", /* ENOBLANK */
43: "text parameter too long", /* ETOOLONG */
44: "invalid escape sequence", /* EESCAPE */
45: "invalid character", /* EPRINT */
46: "document has no body", /* ENODAT */
47: "document has no prologue", /* ENOPROLOGUE */
48: "expected line arguments", /* ELINE */
49: "invalid AT&T argument", /* EATT */
50: "default name not yet set", /* ENAME */
51: "missing list type", /* ELISTTYPE */
52: "missing display type", /* EDISPTYPE */
53: "too many display types", /* EMULTIDISP */
54: "too many list types", /* EMULTILIST */
55: "NAME section must be first", /* ESECNAME */
56: "badly-formed NAME section", /* ENAMESECINC */
57: "argument repeated", /* EARGREP */
58: "expected boolean parameter", /* EBOOL */
59: "inconsistent column syntax", /* ECOLMIS */
60: "nested display invalid", /* ENESTDISP */
61: "width argument missing", /* EMISSWIDTH */
62: "invalid section for this manual section", /* EWRONGMSEC */
63: "section out of conventional order", /* ESECOOO */
64: "section repeated", /* ESECREP */
65: "invalid standard argument", /* EBADSTAND */
66: "multi-line arguments discouraged", /* ENOMULTILINE */
67: "multi-line arguments suggested", /* EMULTILINE */
68: "line arguments discouraged", /* ENOLINE */
69: "prologue macro out of conventional order", /* EPROLOOO */
70: "prologue macro repeated", /* EPROLREP */
71: "invalid manual section", /* EBADMSEC */
72: "invalid section", /* EBADSEC */
73: "invalid font mode", /* EFONT */
74: "invalid date syntax", /* EBADDATE */
75: "invalid number format", /* ENUMFMT */
76: "superfluous width argument", /* ENOWIDTH */
77: "system: utsname error", /* EUTSNAME */
78: "obsolete macro", /* EOBS */
79: "end-of-line scope violation", /* EIMPBRK */
80: "empty macro ignored", /* EIGNE */
81: "unclosed explicit scope", /* EOPEN */
82: "unterminated quoted phrase", /* EQUOTPHR */
83: "closure macro without prior context", /* ENOCTX */
1.107 kristaps 84: "no description found for library", /* ELIB */
85: "bad child for parent context", /* EBADCHILD */
1.109 kristaps 86: "list arguments preceding type", /* ENOTYPE */
1.89 kristaps 87: };
88:
1.1 kristaps 89: const char *const __mdoc_macronames[MDOC_MAX] = {
1.82 kristaps 90: "Ap", "Dd", "Dt", "Os",
1.1 kristaps 91: "Sh", "Ss", "Pp", "D1",
92: "Dl", "Bd", "Ed", "Bl",
93: "El", "It", "Ad", "An",
94: "Ar", "Cd", "Cm", "Dv",
95: "Er", "Ev", "Ex", "Fa",
96: "Fd", "Fl", "Fn", "Ft",
97: "Ic", "In", "Li", "Nd",
98: "Nm", "Op", "Ot", "Pa",
99: "Rv", "St", "Va", "Vt",
100: /* LINTED */
1.114 kristaps 101: "Xr", "%A", "%B", "%D",
1.1 kristaps 102: /* LINTED */
1.114 kristaps 103: "%I", "%J", "%N", "%O",
1.1 kristaps 104: /* LINTED */
1.114 kristaps 105: "%P", "%R", "%T", "%V",
1.1 kristaps 106: "Ac", "Ao", "Aq", "At",
107: "Bc", "Bf", "Bo", "Bq",
108: "Bsx", "Bx", "Db", "Dc",
109: "Do", "Dq", "Ec", "Ef",
110: "Em", "Eo", "Fx", "Ms",
111: "No", "Ns", "Nx", "Ox",
112: "Pc", "Pf", "Po", "Pq",
113: "Qc", "Ql", "Qo", "Qq",
114: "Re", "Rs", "Sc", "So",
115: "Sq", "Sm", "Sx", "Sy",
116: "Tn", "Ux", "Xc", "Xo",
117: "Fo", "Fc", "Oo", "Oc",
118: "Bk", "Ek", "Bt", "Hf",
1.82 kristaps 119: "Fr", "Ud", "Lb", "Lp",
120: "Lk", "Mt", "Brq", "Bro",
1.64 kristaps 121: /* LINTED */
1.114 kristaps 122: "Brc", "%C", "Es", "En",
1.69 kristaps 123: /* LINTED */
1.114 kristaps 124: "Dx", "%Q", "br", "sp",
1.110 kristaps 125: /* LINTED */
1.114 kristaps 126: "%U"
1.1 kristaps 127: };
128:
129: const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
130: "split", "nosplit", "ragged",
131: "unfilled", "literal", "file",
132: "offset", "bullet", "dash",
133: "hyphen", "item", "enum",
134: "tag", "diag", "hang",
135: "ohang", "inset", "column",
136: "width", "compact", "std",
1.52 kristaps 137: "filled", "words", "emphasis",
1.108 kristaps 138: "symbolic", "nested", "centered"
1.1 kristaps 139: };
140:
141: const char * const *mdoc_macronames = __mdoc_macronames;
142: const char * const *mdoc_argnames = __mdoc_argnames;
143:
1.73 kristaps 144: static void mdoc_free1(struct mdoc *);
1.113 kristaps 145: static void mdoc_alloc1(struct mdoc *);
1.73 kristaps 146: static struct mdoc_node *node_alloc(struct mdoc *, int, int,
1.117 kristaps 147: enum mdoct, enum mdoc_type);
1.73 kristaps 148: static int node_append(struct mdoc *,
1.71 kristaps 149: struct mdoc_node *);
150: static int parsetext(struct mdoc *, int, char *);
151: static int parsemacro(struct mdoc *, int, char *);
152: static int macrowarn(struct mdoc *, int, const char *);
1.91 kristaps 153: static int pstring(struct mdoc *, int, int,
154: const char *, size_t);
1.88 kristaps 155:
1.1 kristaps 156: const struct mdoc_node *
1.71 kristaps 157: mdoc_node(const struct mdoc *m)
1.1 kristaps 158: {
159:
1.71 kristaps 160: return(MDOC_HALT & m->flags ? NULL : m->first);
1.1 kristaps 161: }
162:
163:
1.37 kristaps 164: const struct mdoc_meta *
1.71 kristaps 165: mdoc_meta(const struct mdoc *m)
1.37 kristaps 166: {
167:
1.71 kristaps 168: return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37 kristaps 169: }
170:
171:
1.85 kristaps 172: /*
173: * Frees volatile resources (parse tree, meta-data, fields).
174: */
1.73 kristaps 175: static void
176: mdoc_free1(struct mdoc *mdoc)
1.67 kristaps 177: {
178:
179: if (mdoc->first)
180: mdoc_node_freelist(mdoc->first);
181: if (mdoc->meta.title)
182: free(mdoc->meta.title);
183: if (mdoc->meta.os)
184: free(mdoc->meta.os);
185: if (mdoc->meta.name)
186: free(mdoc->meta.name);
187: if (mdoc->meta.arch)
188: free(mdoc->meta.arch);
189: if (mdoc->meta.vol)
190: free(mdoc->meta.vol);
1.73 kristaps 191: }
192:
193:
1.85 kristaps 194: /*
195: * Allocate all volatile resources (parse tree, meta-data, fields).
196: */
1.113 kristaps 197: static void
1.73 kristaps 198: mdoc_alloc1(struct mdoc *mdoc)
199: {
1.67 kristaps 200:
1.112 kristaps 201: memset(&mdoc->meta, 0, sizeof(struct mdoc_meta));
1.67 kristaps 202: mdoc->flags = 0;
1.85 kristaps 203: mdoc->lastnamed = mdoc->lastsec = SEC_NONE;
1.113 kristaps 204: mdoc->last = mandoc_calloc(1, sizeof(struct mdoc_node));
1.70 kristaps 205: mdoc->first = mdoc->last;
1.67 kristaps 206: mdoc->last->type = MDOC_ROOT;
207: mdoc->next = MDOC_NEXT_CHILD;
1.73 kristaps 208: }
209:
210:
211: /*
1.85 kristaps 212: * Free up volatile resources (see mdoc_free1()) then re-initialises the
213: * data with mdoc_alloc1(). After invocation, parse data has been reset
214: * and the parser is ready for re-invocation on a new tree; however,
215: * cross-parse non-volatile data is kept intact.
1.73 kristaps 216: */
1.113 kristaps 217: void
1.73 kristaps 218: mdoc_reset(struct mdoc *mdoc)
219: {
220:
221: mdoc_free1(mdoc);
1.113 kristaps 222: mdoc_alloc1(mdoc);
1.67 kristaps 223: }
224:
225:
1.68 kristaps 226: /*
1.85 kristaps 227: * Completely free up all volatile and non-volatile parse resources.
228: * After invocation, the pointer is no longer usable.
1.68 kristaps 229: */
1.67 kristaps 230: void
1.38 kristaps 231: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 232: {
233:
1.73 kristaps 234: mdoc_free1(mdoc);
1.1 kristaps 235: free(mdoc);
236: }
237:
238:
1.85 kristaps 239: /*
240: * Allocate volatile and non-volatile parse resources.
241: */
1.1 kristaps 242: struct mdoc *
1.55 kristaps 243: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1 kristaps 244: {
245: struct mdoc *p;
246:
1.113 kristaps 247: p = mandoc_calloc(1, sizeof(struct mdoc));
248:
1.74 kristaps 249: if (cb)
1.113 kristaps 250: memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.105 kristaps 251:
1.1 kristaps 252: p->data = data;
1.73 kristaps 253: p->pflags = pflags;
254:
1.113 kristaps 255: mdoc_hash_init();
256: mdoc_alloc1(p);
257: return(p);
1.1 kristaps 258: }
259:
260:
1.68 kristaps 261: /*
262: * Climb back up the parse tree, validating open scopes. Mostly calls
1.85 kristaps 263: * through to macro_end() in macro.c.
1.68 kristaps 264: */
1.1 kristaps 265: int
1.72 kristaps 266: mdoc_endparse(struct mdoc *m)
1.20 kristaps 267: {
268:
1.72 kristaps 269: if (MDOC_HALT & m->flags)
1.20 kristaps 270: return(0);
1.72 kristaps 271: else if (mdoc_macroend(m))
1.20 kristaps 272: return(1);
1.72 kristaps 273: m->flags |= MDOC_HALT;
274: return(0);
1.20 kristaps 275: }
276:
277:
1.50 kristaps 278: /*
1.53 kristaps 279: * Main parse routine. Parses a single line -- really just hands off to
1.85 kristaps 280: * the macro (parsemacro()) or text parser (parsetext()).
1.50 kristaps 281: */
1.20 kristaps 282: int
1.53 kristaps 283: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 284: {
285:
1.53 kristaps 286: if (MDOC_HALT & m->flags)
1.20 kristaps 287: return(0);
1.50 kristaps 288:
1.53 kristaps 289: return('.' == *buf ? parsemacro(m, ln, buf) :
290: parsetext(m, ln, buf));
1.1 kristaps 291: }
292:
293:
294: int
1.31 kristaps 295: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
296: const char *fmt, ...)
1.1 kristaps 297: {
1.31 kristaps 298: char buf[256];
299: va_list ap;
1.1 kristaps 300:
301: if (NULL == mdoc->cb.mdoc_err)
302: return(0);
1.31 kristaps 303:
304: va_start(ap, fmt);
305: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
306: va_end(ap);
1.88 kristaps 307:
1.31 kristaps 308: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 309: }
310:
311:
312: int
1.87 kristaps 313: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1 kristaps 314: {
1.31 kristaps 315: char buf[256];
316: va_list ap;
1.1 kristaps 317:
318: if (NULL == mdoc->cb.mdoc_warn)
319: return(0);
1.31 kristaps 320:
321: va_start(ap, fmt);
322: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
323: va_end(ap);
1.88 kristaps 324:
1.87 kristaps 325: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, buf));
1.1 kristaps 326: }
327:
328:
329: int
1.88 kristaps 330: mdoc_err(struct mdoc *m, int line, int pos, int iserr, enum merr type)
1.78 kristaps 331: {
1.89 kristaps 332: const char *p;
1.88 kristaps 333:
1.89 kristaps 334: p = __mdoc_merrnames[(int)type];
1.73 kristaps 335: assert(p);
1.88 kristaps 336:
337: if (iserr)
338: return(mdoc_verr(m, line, pos, p));
339:
340: return(mdoc_vwarn(m, line, pos, p));
341: }
342:
343:
344: int
1.117 kristaps 345: mdoc_macro(struct mdoc *m, enum mdoct tok,
1.88 kristaps 346: int ln, int pp, int *pos, char *buf)
347: {
1.117 kristaps 348:
349: assert(tok < MDOC_MAX);
1.97 kristaps 350: /*
351: * If we're in the prologue, deny "body" macros. Similarly, if
352: * we're in the body, deny prologue calls.
353: */
1.88 kristaps 354: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.120 ! kristaps 355: MDOC_PBODY & m->flags) {
! 356: if ( ! mdoc_pwarn(m, ln, pp, EBODYPROL))
! 357: return(0);
! 358: /*
! 359: * FIXME: do this in mdoc_action.c.
! 360: */
! 361: if (NULL == m->meta.title)
! 362: m->meta.title = mandoc_strdup("unknown");
! 363: if (NULL == m->meta.vol)
! 364: m->meta.vol = mandoc_strdup("local");
! 365: if (NULL == m->meta.os)
! 366: m->meta.os = mandoc_strdup("local");
! 367: if (0 == m->meta.date)
! 368: m->meta.date = time(NULL);
! 369: m->flags |= MDOC_PBODY;
! 370: }
1.88 kristaps 371: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
372: ! (MDOC_PBODY & m->flags))
373: return(mdoc_perr(m, ln, pp, EBODYPROL));
374:
375: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.73 kristaps 376: }
377:
378:
379: static int
380: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 381: {
382:
1.25 kristaps 383: assert(mdoc->last);
384: assert(mdoc->first);
385: assert(MDOC_ROOT != p->type);
1.1 kristaps 386:
1.13 kristaps 387: switch (mdoc->next) {
388: case (MDOC_NEXT_SIBLING):
1.6 kristaps 389: mdoc->last->next = p;
390: p->prev = mdoc->last;
1.13 kristaps 391: p->parent = mdoc->last->parent;
1.1 kristaps 392: break;
1.13 kristaps 393: case (MDOC_NEXT_CHILD):
394: mdoc->last->child = p;
1.1 kristaps 395: p->parent = mdoc->last;
396: break;
397: default:
1.13 kristaps 398: abort();
399: /* NOTREACHED */
1.1 kristaps 400: }
401:
1.86 kristaps 402: p->parent->nchild++;
403:
1.23 kristaps 404: if ( ! mdoc_valid_pre(mdoc, p))
405: return(0);
1.68 kristaps 406: if ( ! mdoc_action_pre(mdoc, p))
407: return(0);
1.27 kristaps 408:
409: switch (p->type) {
410: case (MDOC_HEAD):
411: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 412: p->parent->head = p;
1.27 kristaps 413: break;
414: case (MDOC_TAIL):
415: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 416: p->parent->tail = p;
1.27 kristaps 417: break;
418: case (MDOC_BODY):
419: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 420: p->parent->body = p;
1.27 kristaps 421: break;
422: default:
423: break;
424: }
425:
1.1 kristaps 426: mdoc->last = p;
1.71 kristaps 427:
428: switch (p->type) {
429: case (MDOC_TEXT):
430: if ( ! mdoc_valid_post(mdoc))
431: return(0);
432: if ( ! mdoc_action_post(mdoc))
433: return(0);
434: break;
435: default:
436: break;
437: }
438:
1.23 kristaps 439: return(1);
1.1 kristaps 440: }
441:
442:
1.45 kristaps 443: static struct mdoc_node *
1.117 kristaps 444: node_alloc(struct mdoc *m, int line, int pos,
445: enum mdoct tok, enum mdoc_type type)
1.45 kristaps 446: {
1.46 kristaps 447: struct mdoc_node *p;
448:
1.113 kristaps 449: p = mandoc_calloc(1, sizeof(struct mdoc_node));
1.91 kristaps 450: p->sec = m->lastsec;
1.73 kristaps 451: p->line = line;
452: p->pos = pos;
453: p->tok = tok;
1.118 kristaps 454: p->type = type;
1.45 kristaps 455:
1.46 kristaps 456: return(p);
1.45 kristaps 457: }
458:
459:
1.23 kristaps 460: int
1.117 kristaps 461: mdoc_tail_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
1.17 kristaps 462: {
463: struct mdoc_node *p;
464:
1.91 kristaps 465: p = node_alloc(m, line, pos, tok, MDOC_TAIL);
1.102 kristaps 466: if ( ! node_append(m, p))
467: return(0);
468: m->next = MDOC_NEXT_CHILD;
469: return(1);
1.17 kristaps 470: }
471:
472:
1.23 kristaps 473: int
1.117 kristaps 474: mdoc_head_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
1.1 kristaps 475: {
476: struct mdoc_node *p;
477:
1.91 kristaps 478: assert(m->first);
479: assert(m->last);
1.1 kristaps 480:
1.91 kristaps 481: p = node_alloc(m, line, pos, tok, MDOC_HEAD);
1.102 kristaps 482: if ( ! node_append(m, p))
483: return(0);
484: m->next = MDOC_NEXT_CHILD;
485: return(1);
1.1 kristaps 486: }
487:
488:
1.23 kristaps 489: int
1.117 kristaps 490: mdoc_body_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
1.1 kristaps 491: {
492: struct mdoc_node *p;
493:
1.91 kristaps 494: p = node_alloc(m, line, pos, tok, MDOC_BODY);
1.102 kristaps 495: if ( ! node_append(m, p))
496: return(0);
497: m->next = MDOC_NEXT_CHILD;
498: return(1);
1.1 kristaps 499: }
500:
501:
1.23 kristaps 502: int
1.91 kristaps 503: mdoc_block_alloc(struct mdoc *m, int line, int pos,
1.117 kristaps 504: enum mdoct tok, struct mdoc_arg *args)
1.1 kristaps 505: {
506: struct mdoc_node *p;
507:
1.91 kristaps 508: p = node_alloc(m, line, pos, tok, MDOC_BLOCK);
1.77 kristaps 509: p->args = args;
510: if (p->args)
1.53 kristaps 511: (args->refcnt)++;
1.102 kristaps 512: if ( ! node_append(m, p))
513: return(0);
514: m->next = MDOC_NEXT_CHILD;
515: return(1);
1.1 kristaps 516: }
517:
518:
1.23 kristaps 519: int
1.91 kristaps 520: mdoc_elem_alloc(struct mdoc *m, int line, int pos,
1.117 kristaps 521: enum mdoct tok, struct mdoc_arg *args)
1.1 kristaps 522: {
523: struct mdoc_node *p;
524:
1.91 kristaps 525: p = node_alloc(m, line, pos, tok, MDOC_ELEM);
1.77 kristaps 526: p->args = args;
527: if (p->args)
1.53 kristaps 528: (args->refcnt)++;
1.102 kristaps 529: if ( ! node_append(m, p))
530: return(0);
531: m->next = MDOC_NEXT_CHILD;
532: return(1);
1.1 kristaps 533: }
534:
535:
1.91 kristaps 536: static int
537: pstring(struct mdoc *m, int line, int pos, const char *p, size_t len)
1.1 kristaps 538: {
1.91 kristaps 539: struct mdoc_node *n;
540: size_t sv;
1.1 kristaps 541:
1.91 kristaps 542: n = node_alloc(m, line, pos, -1, MDOC_TEXT);
1.113 kristaps 543: n->string = mandoc_malloc(len + 1);
1.91 kristaps 544: sv = strlcpy(n->string, p, len + 1);
545:
546: /* Prohibit truncation. */
547: assert(sv < len + 1);
548:
1.101 kristaps 549: if ( ! node_append(m, n))
550: return(0);
551: m->next = MDOC_NEXT_SIBLING;
552: return(1);
1.91 kristaps 553: }
554:
555:
556: int
557: mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p)
558: {
559:
560: return(pstring(m, line, pos, p, strlen(p)));
1.1 kristaps 561: }
562:
563:
1.53 kristaps 564: void
565: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 566: {
567:
1.86 kristaps 568: if (p->parent)
569: p->parent->nchild--;
1.53 kristaps 570: if (p->string)
571: free(p->string);
572: if (p->args)
573: mdoc_argv_free(p->args);
1.1 kristaps 574: free(p);
575: }
576:
577:
1.53 kristaps 578: void
579: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 580: {
581:
1.53 kristaps 582: if (p->child)
583: mdoc_node_freelist(p->child);
584: if (p->next)
585: mdoc_node_freelist(p->next);
1.1 kristaps 586:
1.86 kristaps 587: assert(0 == p->nchild);
1.53 kristaps 588: mdoc_node_free(p);
1.1 kristaps 589: }
590:
591:
1.53 kristaps 592: /*
593: * Parse free-form text, that is, a line that does not begin with the
594: * control character.
595: */
596: static int
1.68 kristaps 597: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 598: {
1.91 kristaps 599: int i, j;
1.116 kristaps 600: char sv;
1.1 kristaps 601:
1.85 kristaps 602: if (SEC_NONE == m->lastnamed)
1.88 kristaps 603: return(mdoc_perr(m, line, 0, ETEXTPROL));
1.91 kristaps 604:
605: /*
606: * If in literal mode, then pass the buffer directly to the
607: * back-end, as it should be preserved as a single term.
608: */
609:
1.101 kristaps 610: if (MDOC_LITERAL & m->flags)
611: return(mdoc_word_alloc(m, line, 0, buf));
1.91 kristaps 612:
613: /* Disallow blank/white-space lines in non-literal mode. */
1.1 kristaps 614:
1.91 kristaps 615: for (i = 0; ' ' == buf[i]; i++)
616: /* Skip leading whitespace. */ ;
1.115 kristaps 617:
1.119 kristaps 618: if ('\0' == buf[i]) {
619: if ( ! mdoc_pwarn(m, line, 0, ENOBLANK))
620: return(0);
621: /*
622: * Assume that a `Pp' should be inserted in the case of
623: * a blank line. Technically, blank lines aren't
624: * allowed, but enough manuals assume this behaviour
625: * that we want to work around it.
626: */
627: if ( ! mdoc_elem_alloc(m, line, 0, MDOC_Pp, NULL))
628: return(0);
629: }
1.68 kristaps 630:
1.91 kristaps 631: /*
632: * Break apart a free-form line into tokens. Spaces are
633: * stripped out of the input.
634: */
635:
636: for (j = i; buf[i]; i++) {
637: if (' ' != buf[i])
638: continue;
639:
640: /* Escaped whitespace. */
641: if (i && ' ' == buf[i] && '\\' == buf[i - 1])
642: continue;
643:
1.116 kristaps 644: sv = buf[i];
1.115 kristaps 645: buf[i++] = '\0';
646:
1.91 kristaps 647: if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
648: return(0);
649:
1.116 kristaps 650: /* Trailing whitespace? Check at overwritten byte. */
651:
652: if (' ' == sv && '\0' == buf[i])
653: if ( ! mdoc_pwarn(m, line, i - 1, ETAILWS))
654: return(0);
655:
1.91 kristaps 656: for ( ; ' ' == buf[i]; i++)
657: /* Skip trailing whitespace. */ ;
658:
659: j = i;
1.116 kristaps 660:
661: /* Trailing whitespace? */
662:
663: if (' ' == buf[i - 1] && '\0' == buf[i])
664: if ( ! mdoc_pwarn(m, line, i - 1, ETAILWS))
665: return(0);
666:
1.115 kristaps 667: if ('\0' == buf[i])
1.91 kristaps 668: break;
669: }
670:
671: if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
1.53 kristaps 672: return(0);
1.1 kristaps 673:
1.68 kristaps 674: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 675: return(1);
1.1 kristaps 676: }
677:
678:
1.91 kristaps 679:
1.58 kristaps 680: static int
681: macrowarn(struct mdoc *m, int ln, const char *buf)
682: {
683: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.96 kristaps 684: return(mdoc_verr(m, ln, 0,
1.73 kristaps 685: "unknown macro: %s%s",
1.59 kristaps 686: buf, strlen(buf) > 3 ? "..." : ""));
1.96 kristaps 687: return(mdoc_vwarn(m, ln, 0, "unknown macro: %s%s",
1.59 kristaps 688: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 689: }
690:
691:
1.53 kristaps 692: /*
693: * Parse a macro line, that is, a line beginning with the control
694: * character.
695: */
696: int
697: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 698: {
1.103 kristaps 699: int i, j, c;
1.53 kristaps 700: char mac[5];
1.1 kristaps 701:
1.81 kristaps 702: /* Empty lines are ignored. */
1.63 kristaps 703:
1.115 kristaps 704: if ('\0' == buf[1])
1.63 kristaps 705: return(1);
706:
1.100 kristaps 707: i = 1;
708:
709: /* Accept whitespace after the initial control char. */
710:
711: if (' ' == buf[i]) {
712: i++;
1.65 kristaps 713: while (buf[i] && ' ' == buf[i])
1.63 kristaps 714: i++;
1.115 kristaps 715: if ('\0' == buf[i])
1.63 kristaps 716: return(1);
717: }
1.1 kristaps 718:
1.53 kristaps 719: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 720:
1.100 kristaps 721: for (j = 0; j < 4; j++, i++) {
1.115 kristaps 722: if ('\0' == (mac[j] = buf[i]))
1.53 kristaps 723: break;
1.65 kristaps 724: else if (' ' == buf[i])
1.53 kristaps 725: break;
1.104 kristaps 726:
727: /* Check for invalid characters. */
728:
729: if (isgraph((u_char)buf[i]))
730: continue;
731: return(mdoc_perr(m, ln, i, EPRINT));
1.53 kristaps 732: }
1.1 kristaps 733:
1.100 kristaps 734: mac[j] = 0;
1.1 kristaps 735:
1.100 kristaps 736: if (j == 4 || j < 2) {
1.58 kristaps 737: if ( ! macrowarn(m, ln, mac))
738: goto err;
739: return(1);
1.53 kristaps 740: }
741:
1.105 kristaps 742: if (MDOC_MAX == (c = mdoc_hash_find(mac))) {
1.58 kristaps 743: if ( ! macrowarn(m, ln, mac))
744: goto err;
745: return(1);
1.53 kristaps 746: }
1.1 kristaps 747:
1.53 kristaps 748: /* The macro is sane. Jump to the next word. */
1.1 kristaps 749:
1.65 kristaps 750: while (buf[i] && ' ' == buf[i])
1.53 kristaps 751: i++;
1.1 kristaps 752:
1.115 kristaps 753: /* Trailing whitespace? */
754:
755: if ('\0' == buf[i] && ' ' == buf[i - 1])
756: if ( ! mdoc_pwarn(m, ln, i - 1, ETAILWS))
757: goto err;
758:
1.98 kristaps 759: /*
760: * Begin recursive parse sequence. Since we're at the start of
761: * the line, we don't need to do callable/parseable checks.
762: */
1.103 kristaps 763: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
1.53 kristaps 764: goto err;
1.1 kristaps 765:
1.53 kristaps 766: return(1);
1.1 kristaps 767:
1.53 kristaps 768: err: /* Error out. */
1.1 kristaps 769:
1.53 kristaps 770: m->flags |= MDOC_HALT;
771: return(0);
1.1 kristaps 772: }
1.100 kristaps 773:
774:
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