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1.3 ! schwarze 1: /* $Id: mdoc_action.c,v 1.2 2009/06/14 23:00:57 schwarze Exp $ */
1.1 kristaps 2: /*
1.2 schwarze 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
1.2 schwarze 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: *
1.2 schwarze 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 <sys/utsname.h>
18:
19: #include <assert.h>
20: #include <errno.h>
21: #include <stdio.h>
22: #include <stdlib.h>
23: #include <string.h>
24:
25: #include "libmdoc.h"
26:
27: enum mwarn {
28: WBADSEC,
29: WNOWIDTH,
30: WBADDATE
31: };
32:
33: enum merr {
34: ETOOLONG,
35: EMALLOC,
36: ENUMFMT
37: };
38:
39: #define PRE_ARGS struct mdoc *m, const struct mdoc_node *n
40: #define POST_ARGS struct mdoc *m
41:
42: struct actions {
43: int (*pre)(PRE_ARGS);
44: int (*post)(POST_ARGS);
45: };
46:
47: static int pwarn(struct mdoc *, int, int, enum mwarn);
48: static int perr(struct mdoc *, int, int, enum merr);
49: static int concat(struct mdoc *, const struct mdoc_node *,
50: char *, size_t);
51:
52: static int post_ar(POST_ARGS);
53: static int post_bl(POST_ARGS);
54: static int post_bl_width(POST_ARGS);
55: static int post_bl_tagwidth(POST_ARGS);
56: static int post_dd(POST_ARGS);
57: static int post_display(POST_ARGS);
58: static int post_dt(POST_ARGS);
1.3 ! schwarze 59: static int post_lk(POST_ARGS);
1.1 kristaps 60: static int post_nm(POST_ARGS);
61: static int post_os(POST_ARGS);
62: static int post_prol(POST_ARGS);
63: static int post_sh(POST_ARGS);
64: static int post_std(POST_ARGS);
65:
66: static int pre_bd(PRE_ARGS);
67: static int pre_dl(PRE_ARGS);
68:
69: #define vwarn(m, t) pwarn((m), (m)->last->line, (m)->last->pos, (t))
70: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
71: #define nerr(m, n, t) perr((m), (n)->line, (n)->pos, (t))
72:
73: const struct actions mdoc_actions[MDOC_MAX] = {
74: { NULL, NULL }, /* \" */
75: { NULL, post_dd }, /* Dd */
76: { NULL, post_dt }, /* Dt */
77: { NULL, post_os }, /* Os */
78: { NULL, post_sh }, /* Sh */
79: { NULL, NULL }, /* Ss */
80: { NULL, NULL }, /* Pp */
81: { NULL, NULL }, /* D1 */
82: { pre_dl, post_display }, /* Dl */
83: { pre_bd, post_display }, /* Bd */
84: { NULL, NULL }, /* Ed */
85: { NULL, post_bl }, /* Bl */
86: { NULL, NULL }, /* El */
87: { NULL, NULL }, /* It */
88: { NULL, NULL }, /* Ad */
89: { NULL, NULL }, /* An */
90: { NULL, post_ar }, /* Ar */
91: { NULL, NULL }, /* Cd */
92: { NULL, NULL }, /* Cm */
93: { NULL, NULL }, /* Dv */
94: { NULL, NULL }, /* Er */
95: { NULL, NULL }, /* Ev */
96: { NULL, post_std }, /* Ex */
97: { NULL, NULL }, /* Fa */
98: { NULL, NULL }, /* Fd */
99: { NULL, NULL }, /* Fl */
100: { NULL, NULL }, /* Fn */
101: { NULL, NULL }, /* Ft */
102: { NULL, NULL }, /* Ic */
103: { NULL, NULL }, /* In */
104: { NULL, NULL }, /* Li */
105: { NULL, NULL }, /* Nd */
106: { NULL, post_nm }, /* Nm */
107: { NULL, NULL }, /* Op */
108: { NULL, NULL }, /* Ot */
109: { NULL, NULL }, /* Pa */
110: { NULL, post_std }, /* Rv */
111: { NULL, NULL }, /* St */
112: { NULL, NULL }, /* Va */
113: { NULL, NULL }, /* Vt */
114: { NULL, NULL }, /* Xr */
115: { NULL, NULL }, /* %A */
116: { NULL, NULL }, /* %B */
117: { NULL, NULL }, /* %D */
118: { NULL, NULL }, /* %I */
119: { NULL, NULL }, /* %J */
120: { NULL, NULL }, /* %N */
121: { NULL, NULL }, /* %O */
122: { NULL, NULL }, /* %P */
123: { NULL, NULL }, /* %R */
124: { NULL, NULL }, /* %T */
125: { NULL, NULL }, /* %V */
126: { NULL, NULL }, /* Ac */
127: { NULL, NULL }, /* Ao */
128: { NULL, NULL }, /* Aq */
129: { NULL, NULL }, /* At */
130: { NULL, NULL }, /* Bc */
131: { NULL, NULL }, /* Bf */
132: { NULL, NULL }, /* Bo */
133: { NULL, NULL }, /* Bq */
134: { NULL, NULL }, /* Bsx */
135: { NULL, NULL }, /* Bx */
136: { NULL, NULL }, /* Db */
137: { NULL, NULL }, /* Dc */
138: { NULL, NULL }, /* Do */
139: { NULL, NULL }, /* Dq */
140: { NULL, NULL }, /* Ec */
141: { NULL, NULL }, /* Ef */
142: { NULL, NULL }, /* Em */
143: { NULL, NULL }, /* Eo */
144: { NULL, NULL }, /* Fx */
145: { NULL, NULL }, /* Ms */
146: { NULL, NULL }, /* No */
147: { NULL, NULL }, /* Ns */
148: { NULL, NULL }, /* Nx */
149: { NULL, NULL }, /* Ox */
150: { NULL, NULL }, /* Pc */
151: { NULL, NULL }, /* Pf */
152: { NULL, NULL }, /* Po */
153: { NULL, NULL }, /* Pq */
154: { NULL, NULL }, /* Qc */
155: { NULL, NULL }, /* Ql */
156: { NULL, NULL }, /* Qo */
157: { NULL, NULL }, /* Qq */
158: { NULL, NULL }, /* Re */
159: { NULL, NULL }, /* Rs */
160: { NULL, NULL }, /* Sc */
161: { NULL, NULL }, /* So */
162: { NULL, NULL }, /* Sq */
163: { NULL, NULL }, /* Sm */
164: { NULL, NULL }, /* Sx */
165: { NULL, NULL }, /* Sy */
166: { NULL, NULL }, /* Tn */
167: { NULL, NULL }, /* Ux */
168: { NULL, NULL }, /* Xc */
169: { NULL, NULL }, /* Xo */
170: { NULL, NULL }, /* Fo */
171: { NULL, NULL }, /* Fc */
172: { NULL, NULL }, /* Oo */
173: { NULL, NULL }, /* Oc */
174: { NULL, NULL }, /* Bk */
175: { NULL, NULL }, /* Ek */
176: { NULL, NULL }, /* Bt */
177: { NULL, NULL }, /* Hf */
178: { NULL, NULL }, /* Fr */
179: { NULL, NULL }, /* Ud */
180: { NULL, NULL }, /* Lb */
181: { NULL, NULL }, /* Ap */
182: { NULL, NULL }, /* Lp */
1.3 ! schwarze 183: { NULL, post_lk }, /* Lk */
1.1 kristaps 184: { NULL, NULL }, /* Mt */
185: { NULL, NULL }, /* Brq */
186: { NULL, NULL }, /* Bro */
187: { NULL, NULL }, /* Brc */
188: { NULL, NULL }, /* %C */
189: { NULL, NULL }, /* Es */
190: { NULL, NULL }, /* En */
191: { NULL, NULL }, /* Dx */
192: { NULL, NULL }, /* %Q */
193: };
194:
195:
196: int
197: mdoc_action_pre(struct mdoc *m, const struct mdoc_node *n)
198: {
199:
200: switch (n->type) {
201: case (MDOC_ROOT):
202: /* FALLTHROUGH */
203: case (MDOC_TEXT):
204: return(1);
205: default:
206: break;
207: }
208:
209: if (NULL == mdoc_actions[n->tok].pre)
210: return(1);
211: return((*mdoc_actions[n->tok].pre)(m, n));
212: }
213:
214:
215: int
216: mdoc_action_post(struct mdoc *m)
217: {
218:
219: if (MDOC_ACTED & m->last->flags)
220: return(1);
221: m->last->flags |= MDOC_ACTED;
222:
223: switch (m->last->type) {
224: case (MDOC_TEXT):
225: /* FALLTHROUGH */
226: case (MDOC_ROOT):
227: return(1);
228: default:
229: break;
230: }
231:
232: if (NULL == mdoc_actions[m->last->tok].post)
233: return(1);
234: return((*mdoc_actions[m->last->tok].post)(m));
235: }
236:
237:
238: static int
239: concat(struct mdoc *m, const struct mdoc_node *n,
240: char *buf, size_t sz)
241: {
242:
243: for ( ; n; n = n->next) {
244: assert(MDOC_TEXT == n->type);
245: if (strlcat(buf, n->string, sz) >= sz)
246: return(nerr(m, n, ETOOLONG));
247: if (NULL == n->next)
248: continue;
249: if (strlcat(buf, " ", sz) >= sz)
250: return(nerr(m, n, ETOOLONG));
251: }
252:
253: return(1);
254: }
255:
256:
257: static int
258: perr(struct mdoc *m, int line, int pos, enum merr type)
259: {
260: char *p;
261:
262: p = NULL;
263: switch (type) {
264: case (ENUMFMT):
265: p = "bad number format";
266: break;
267: case (ETOOLONG):
268: p = "argument text too long";
269: break;
270: case (EMALLOC):
271: p = "memory exhausted";
272: break;
273: }
274: assert(p);
275: return(mdoc_perr(m, line, pos, p));
276: }
277:
278:
279: static int
280: pwarn(struct mdoc *m, int line, int pos, enum mwarn type)
281: {
282: char *p;
283: int c;
284:
285: p = NULL;
286: c = WARN_SYNTAX;
287: switch (type) {
288: case (WBADSEC):
289: p = "inappropriate document section in manual section";
290: c = WARN_COMPAT;
291: break;
292: case (WNOWIDTH):
293: p = "cannot determine default width";
294: break;
295: case (WBADDATE):
296: p = "malformed date syntax";
297: break;
298: }
299: assert(p);
300: return(mdoc_pwarn(m, line, pos, c, p));
301: }
302:
303:
304: static int
305: post_std(POST_ARGS)
306: {
307:
308: /*
309: * If '-std' is invoked without an argument, fill it in with our
310: * name (if it's been set).
311: */
312:
313: if (NULL == m->last->args)
314: return(1);
315: if (m->last->args->argv[0].sz)
316: return(1);
317:
318: assert(m->meta.name);
319:
320: m->last->args->argv[0].value = calloc(1, sizeof(char *));
321: if (NULL == m->last->args->argv[0].value)
322: return(verr(m, EMALLOC));
323:
324: m->last->args->argv[0].sz = 1;
325: m->last->args->argv[0].value[0] = strdup(m->meta.name);
326: if (NULL == m->last->args->argv[0].value[0])
327: return(verr(m, EMALLOC));
328:
329: return(1);
330: }
331:
332:
333: static int
334: post_nm(POST_ARGS)
335: {
336: char buf[64];
337:
338: if (m->meta.name)
339: return(1);
340:
341: buf[0] = 0;
342: if ( ! concat(m, m->last->child, buf, sizeof(buf)))
343: return(0);
1.2 schwarze 344:
1.1 kristaps 345: if (NULL == (m->meta.name = strdup(buf)))
346: return(verr(m, EMALLOC));
1.2 schwarze 347:
1.1 kristaps 348: return(1);
349: }
350:
351:
352: static int
353: post_sh(POST_ARGS)
354: {
355: enum mdoc_sec sec;
356: char buf[64];
357:
358: /*
359: * We keep track of the current section /and/ the "named"
360: * section, which is one of the conventional ones, in order to
361: * check ordering.
362: */
363:
364: if (MDOC_HEAD != m->last->type)
365: return(1);
366:
367: buf[0] = 0;
368: if ( ! concat(m, m->last->child, buf, sizeof(buf)))
369: return(0);
370: if (SEC_CUSTOM != (sec = mdoc_atosec(buf)))
371: m->lastnamed = sec;
372:
373: switch ((m->lastsec = sec)) {
374: case (SEC_RETURN_VALUES):
375: /* FALLTHROUGH */
376: case (SEC_ERRORS):
377: switch (m->meta.msec) {
378: case (2):
379: /* FALLTHROUGH */
380: case (3):
381: /* FALLTHROUGH */
382: case (9):
383: break;
384: default:
385: return(vwarn(m, WBADSEC));
386: }
387: break;
388: default:
389: break;
390: }
391: return(1);
392: }
393:
394:
395: static int
396: post_dt(POST_ARGS)
397: {
398: struct mdoc_node *n;
399: const char *cp;
400: char *ep;
401: long lval;
402:
403: if (m->meta.title)
404: free(m->meta.title);
405: if (m->meta.vol)
406: free(m->meta.vol);
407: if (m->meta.arch)
408: free(m->meta.arch);
409:
410: m->meta.title = m->meta.vol = m->meta.arch = NULL;
411: m->meta.msec = 0;
412:
413: /* Handles: `.Dt'
414: * --> title = unknown, volume = local, msec = 0, arch = NULL
415: */
416:
417: if (NULL == (n = m->last->child)) {
418: if (NULL == (m->meta.title = strdup("unknown")))
419: return(verr(m, EMALLOC));
420: if (NULL == (m->meta.vol = strdup("local")))
421: return(verr(m, EMALLOC));
422: return(post_prol(m));
423: }
424:
425: /* Handles: `.Dt TITLE'
426: * --> title = TITLE, volume = local, msec = 0, arch = NULL
427: */
428:
429: if (NULL == (m->meta.title = strdup(n->string)))
430: return(verr(m, EMALLOC));
431:
432: if (NULL == (n = n->next)) {
433: if (NULL == (m->meta.vol = strdup("local")))
434: return(verr(m, EMALLOC));
435: return(post_prol(m));
436: }
437:
438: /* Handles: `.Dt TITLE SEC'
439: * --> title = TITLE, volume = SEC is msec ?
440: * format(msec) : SEC,
441: * msec = SEC is msec ? atoi(msec) : 0,
442: * arch = NULL
443: */
444:
445: cp = mdoc_a2msec(n->string);
446: if (cp) {
447: if (NULL == (m->meta.vol = strdup(cp)))
448: return(verr(m, EMALLOC));
449: errno = 0;
450: lval = strtol(n->string, &ep, 10);
451: if (n->string[0] != '\0' && *ep == '\0')
452: m->meta.msec = (int)lval;
453: } else if (NULL == (m->meta.vol = strdup(n->string)))
454: return(verr(m, EMALLOC));
455:
456: if (NULL == (n = n->next))
457: return(post_prol(m));
458:
459: /* Handles: `.Dt TITLE SEC VOL'
460: * --> title = TITLE, volume = VOL is vol ?
461: * format(VOL) :
462: * VOL is arch ? format(arch) :
463: * VOL
464: */
465:
466: cp = mdoc_a2vol(n->string);
467: if (cp) {
468: free(m->meta.vol);
469: if (NULL == (m->meta.vol = strdup(cp)))
470: return(verr(m, EMALLOC));
471: n = n->next;
472: } else {
473: cp = mdoc_a2arch(n->string);
474: if (NULL == cp) {
475: free(m->meta.vol);
476: if (NULL == (m->meta.vol = strdup(n->string)))
477: return(verr(m, EMALLOC));
478: } else if (NULL == (m->meta.arch = strdup(cp)))
479: return(verr(m, EMALLOC));
480: }
481:
482: /* Ignore any subsequent parameters... */
483:
484: return(post_prol(m));
485: }
486:
487:
488: static int
489: post_os(POST_ARGS)
490: {
491: char buf[64];
492: struct utsname utsname;
493:
494: if (m->meta.os)
495: free(m->meta.os);
496:
497: buf[0] = 0;
498: if ( ! concat(m, m->last->child, buf, sizeof(buf)))
499: return(0);
500:
501: if (0 == buf[0]) {
502: if (-1 == uname(&utsname))
503: return(mdoc_err(m, "utsname"));
504: if (strlcat(buf, utsname.sysname, 64) >= 64)
505: return(verr(m, ETOOLONG));
506: if (strlcat(buf, " ", 64) >= 64)
507: return(verr(m, ETOOLONG));
508: if (strlcat(buf, utsname.release, 64) >= 64)
509: return(verr(m, ETOOLONG));
510: }
511:
512: if (NULL == (m->meta.os = strdup(buf)))
513: return(verr(m, EMALLOC));
514: m->lastnamed = m->lastsec = SEC_BODY;
515:
516: return(post_prol(m));
517: }
518:
519:
520: /*
521: * Calculate the -width for a `Bl -tag' list if it hasn't been provided.
522: * Uses the first head macro.
523: */
524: static int
525: post_bl_tagwidth(struct mdoc *m)
526: {
527: struct mdoc_node *n;
528: int sz;
529: char buf[32];
530:
531: /*
532: * Use the text width, if a text node, or the default macro
533: * width if a macro.
534: */
535:
1.3 ! schwarze 536: n = m->last->body->child;
! 537: if (n) {
1.1 kristaps 538: assert(MDOC_BLOCK == n->type);
539: assert(MDOC_It == n->tok);
540: n = n->head->child;
541: }
542:
543: sz = 10; /* Default size. */
544:
545: if (n) {
546: if (MDOC_TEXT != n->type) {
547: if (0 == (sz = (int)mdoc_macro2len(n->tok)))
548: if ( ! vwarn(m, WNOWIDTH))
549: return(0);
550: } else
551: sz = (int)strlen(n->string) + 1;
552: }
553:
554: if (-1 == snprintf(buf, sizeof(buf), "%dn", sz))
555: return(verr(m, ENUMFMT));
556:
557: /*
558: * We have to dynamically add this to the macro's argument list.
559: * We're guaranteed that a MDOC_Width doesn't already exist.
560: */
561:
562: n = m->last;
563: assert(n->args);
564: sz = (int)(n->args->argc)++;
565:
566: n->args->argv = realloc(n->args->argv,
567: n->args->argc * sizeof(struct mdoc_argv));
568:
569: if (NULL == n->args->argv)
570: return(verr(m, EMALLOC));
571:
572: n->args->argv[sz].arg = MDOC_Width;
573: n->args->argv[sz].line = m->last->line;
574: n->args->argv[sz].pos = m->last->pos;
575: n->args->argv[sz].sz = 1;
576: n->args->argv[sz].value = calloc(1, sizeof(char *));
577:
578: if (NULL == n->args->argv[sz].value)
579: return(verr(m, EMALLOC));
580: if (NULL == (n->args->argv[sz].value[0] = strdup(buf)))
581: return(verr(m, EMALLOC));
582:
583: return(1);
584: }
585:
586:
587: static int
588: post_bl_width(struct mdoc *m)
589: {
590: size_t width;
591: int i, tok;
592: char buf[32];
593: char *p;
594:
595: if (NULL == m->last->args)
596: return(1);
597:
598: for (i = 0; i < (int)m->last->args->argc; i++)
599: if (MDOC_Width == m->last->args->argv[i].arg)
600: break;
601:
602: if (i == (int)m->last->args->argc)
603: return(1);
604: p = m->last->args->argv[i].value[0];
605:
606: /*
607: * If the value to -width is a macro, then we re-write it to be
608: * the macro's width as set in share/tmac/mdoc/doc-common.
609: */
610:
611: if (0 == strcmp(p, "Ds"))
612: width = 8;
613: else if (MDOC_MAX == (tok = mdoc_hash_find(m->htab, p)))
614: return(1);
615: else if (0 == (width = mdoc_macro2len(tok)))
616: return(vwarn(m, WNOWIDTH));
617:
618: /* The value already exists: free and reallocate it. */
619:
620: if (-1 == snprintf(buf, sizeof(buf), "%zun", width))
621: return(verr(m, ENUMFMT));
622:
623: free(m->last->args->argv[i].value[0]);
624: m->last->args->argv[i].value[0] = strdup(buf);
625: if (NULL == m->last->args->argv[i].value[0])
626: return(verr(m, EMALLOC));
627:
628: return(1);
629: }
630:
631:
632: static int
633: post_bl(POST_ARGS)
634: {
635: int i, r, len;
636:
637: if (MDOC_BLOCK != m->last->type)
638: return(1);
639:
640: /*
641: * These are fairly complicated, so we've broken them into two
642: * functions. post_bl_tagwidth() is called when a -tag is
643: * specified, but no -width (it must be guessed). The second
644: * when a -width is specified (macro indicators must be
645: * rewritten into real lengths).
646: */
647:
648: len = (int)(m->last->args ? m->last->args->argc : 0);
649:
650: for (r = i = 0; i < len; i++) {
651: if (MDOC_Tag == m->last->args->argv[i].arg)
652: r |= 1 << 0;
653: if (MDOC_Width == m->last->args->argv[i].arg)
654: r |= 1 << 1;
655: }
656:
657: if (r & (1 << 0) && ! (r & (1 << 1))) {
658: if ( ! post_bl_tagwidth(m))
659: return(0);
660: } else if (r & (1 << 1))
661: if ( ! post_bl_width(m))
662: return(0);
663:
1.3 ! schwarze 664: return(1);
! 665: }
! 666:
! 667:
! 668: static int
! 669: post_lk(POST_ARGS)
! 670: {
! 671: struct mdoc_node *n;
! 672:
! 673: if (m->last->child)
! 674: return(1);
! 675:
! 676: n = m->last;
! 677: m->next = MDOC_NEXT_CHILD;
! 678: /* FIXME: this isn't documented anywhere! */
! 679: if ( ! mdoc_word_alloc(m, m->last->line,
! 680: m->last->pos, "~"))
! 681: return(0);
! 682:
! 683: m->last = n;
! 684: m->next = MDOC_NEXT_SIBLING;
1.1 kristaps 685: return(1);
686: }
687:
688:
689: static int
690: post_ar(POST_ARGS)
691: {
692: struct mdoc_node *n;
693:
694: if (m->last->child)
695: return(1);
696:
697: n = m->last;
698: m->next = MDOC_NEXT_CHILD;
699: if ( ! mdoc_word_alloc(m, m->last->line,
700: m->last->pos, "file"))
701: return(0);
702: m->next = MDOC_NEXT_SIBLING;
703: if ( ! mdoc_word_alloc(m, m->last->line,
704: m->last->pos, "..."))
705: return(0);
706:
707: m->last = n;
708: m->next = MDOC_NEXT_SIBLING;
709: return(1);
710: }
711:
712:
713: static int
714: post_dd(POST_ARGS)
715: {
716: char buf[64];
717:
718: buf[0] = 0;
719: if ( ! concat(m, m->last->child, buf, sizeof(buf)))
720: return(0);
721:
722: if (0 == (m->meta.date = mdoc_atotime(buf))) {
723: if ( ! vwarn(m, WBADDATE))
724: return(0);
725: m->meta.date = time(NULL);
726: }
727:
728: return(post_prol(m));
729: }
730:
731:
732: static int
733: post_prol(POST_ARGS)
734: {
735: struct mdoc_node *n;
736:
737: /*
738: * The end document shouldn't have the prologue macros as part
739: * of the syntax tree (they encompass only meta-data).
740: */
741:
742: if (m->last->parent->child == m->last)
743: m->last->parent->child = m->last->prev;
744: if (m->last->prev)
745: m->last->prev->next = NULL;
746:
747: n = m->last;
748: assert(NULL == m->last->next);
749:
750: if (m->last->prev) {
751: m->last = m->last->prev;
752: m->next = MDOC_NEXT_SIBLING;
753: } else {
754: m->last = m->last->parent;
755: m->next = MDOC_NEXT_CHILD;
756: }
757:
758: mdoc_node_freelist(n);
759: return(1);
760: }
761:
762:
763: static int
764: pre_dl(PRE_ARGS)
765: {
766:
767: if (MDOC_BODY != n->type)
768: return(1);
769: m->flags |= MDOC_LITERAL;
770: return(1);
771: }
772:
773:
774: static int
775: pre_bd(PRE_ARGS)
776: {
777: int i;
778:
779: if (MDOC_BODY != n->type)
780: return(1);
781:
782: /* Enter literal context if `Bd -literal' or * -unfilled'. */
783:
784: for (n = n->parent, i = 0; i < (int)n->args->argc; i++)
785: if (MDOC_Literal == n->args->argv[i].arg)
786: break;
787: else if (MDOC_Unfilled == n->args->argv[i].arg)
788: break;
789:
790: if (i < (int)n->args->argc)
791: m->flags |= MDOC_LITERAL;
792:
793: return(1);
794: }
795:
796:
797: static int
798: post_display(POST_ARGS)
799: {
800:
801: if (MDOC_BODY == m->last->type)
802: m->flags &= ~MDOC_LITERAL;
803: return(1);
804: }
805:
806: