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mandoc: update to 1.14.5
[unleashed.git] / bin / mandoc / mdoc_term.c
blob52ff27e17f11993fbd81e308de9f105f8942c772
1 /* $Id: mdoc_term.c,v 1.372 2019/01/04 03:39:01 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010, 2012-2019 Ingo Schwarze <schwarze@openbsd.org>
5 * Copyright (c) 2013 Franco Fichtner <franco@lastsummer.de>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19 #include "config.h"
20
21 #include <sys/types.h>
22
23 #include <assert.h>
24 #include <ctype.h>
25 #include <limits.h>
26 #include <stdint.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 #include "mandoc_aux.h"
32 #include "roff.h"
33 #include "mdoc.h"
34 #include "out.h"
35 #include "term.h"
36 #include "tag.h"
37 #include "main.h"
38
39 struct termpair {
40 struct termpair *ppair;
41 int count;
42 };
43
44 #define DECL_ARGS struct termp *p, \
45 struct termpair *pair, \
46 const struct roff_meta *meta, \
47 struct roff_node *n
48
49 struct mdoc_term_act {
50 int (*pre)(DECL_ARGS);
51 void (*post)(DECL_ARGS);
52 };
53
54 static int a2width(const struct termp *, const char *);
55
56 static void print_bvspace(struct termp *,
57 const struct roff_node *,
58 const struct roff_node *);
59 static void print_mdoc_node(DECL_ARGS);
60 static void print_mdoc_nodelist(DECL_ARGS);
61 static void print_mdoc_head(struct termp *, const struct roff_meta *);
62 static void print_mdoc_foot(struct termp *, const struct roff_meta *);
63 static void synopsis_pre(struct termp *,
64 const struct roff_node *);
65
66 static void termp____post(DECL_ARGS);
67 static void termp__t_post(DECL_ARGS);
68 static void termp_bd_post(DECL_ARGS);
69 static void termp_bk_post(DECL_ARGS);
70 static void termp_bl_post(DECL_ARGS);
71 static void termp_eo_post(DECL_ARGS);
72 static void termp_fd_post(DECL_ARGS);
73 static void termp_fo_post(DECL_ARGS);
74 static void termp_in_post(DECL_ARGS);
75 static void termp_it_post(DECL_ARGS);
76 static void termp_lb_post(DECL_ARGS);
77 static void termp_nm_post(DECL_ARGS);
78 static void termp_pf_post(DECL_ARGS);
79 static void termp_quote_post(DECL_ARGS);
80 static void termp_sh_post(DECL_ARGS);
81 static void termp_ss_post(DECL_ARGS);
82 static void termp_xx_post(DECL_ARGS);
83
84 static int termp__a_pre(DECL_ARGS);
85 static int termp__t_pre(DECL_ARGS);
86 static int termp_abort_pre(DECL_ARGS);
87 static int termp_an_pre(DECL_ARGS);
88 static int termp_ap_pre(DECL_ARGS);
89 static int termp_bd_pre(DECL_ARGS);
90 static int termp_bf_pre(DECL_ARGS);
91 static int termp_bk_pre(DECL_ARGS);
92 static int termp_bl_pre(DECL_ARGS);
93 static int termp_bold_pre(DECL_ARGS);
94 static int termp_cd_pre(DECL_ARGS);
95 static int termp_d1_pre(DECL_ARGS);
96 static int termp_eo_pre(DECL_ARGS);
97 static int termp_em_pre(DECL_ARGS);
98 static int termp_er_pre(DECL_ARGS);
99 static int termp_ex_pre(DECL_ARGS);
100 static int termp_fa_pre(DECL_ARGS);
101 static int termp_fd_pre(DECL_ARGS);
102 static int termp_fl_pre(DECL_ARGS);
103 static int termp_fn_pre(DECL_ARGS);
104 static int termp_fo_pre(DECL_ARGS);
105 static int termp_ft_pre(DECL_ARGS);
106 static int termp_in_pre(DECL_ARGS);
107 static int termp_it_pre(DECL_ARGS);
108 static int termp_li_pre(DECL_ARGS);
109 static int termp_lk_pre(DECL_ARGS);
110 static int termp_nd_pre(DECL_ARGS);
111 static int termp_nm_pre(DECL_ARGS);
112 static int termp_ns_pre(DECL_ARGS);
113 static int termp_quote_pre(DECL_ARGS);
114 static int termp_rs_pre(DECL_ARGS);
115 static int termp_sh_pre(DECL_ARGS);
116 static int termp_skip_pre(DECL_ARGS);
117 static int termp_sm_pre(DECL_ARGS);
118 static int termp_pp_pre(DECL_ARGS);
119 static int termp_ss_pre(DECL_ARGS);
120 static int termp_sy_pre(DECL_ARGS);
121 static int termp_tag_pre(DECL_ARGS);
122 static int termp_under_pre(DECL_ARGS);
123 static int termp_vt_pre(DECL_ARGS);
124 static int termp_xr_pre(DECL_ARGS);
125 static int termp_xx_pre(DECL_ARGS);
126
127 static const struct mdoc_term_act mdoc_term_acts[MDOC_MAX - MDOC_Dd] = {
128 { NULL, NULL }, /* Dd */
129 { NULL, NULL }, /* Dt */
130 { NULL, NULL }, /* Os */
131 { termp_sh_pre, termp_sh_post }, /* Sh */
132 { termp_ss_pre, termp_ss_post }, /* Ss */
133 { termp_pp_pre, NULL }, /* Pp */
134 { termp_d1_pre, termp_bl_post }, /* D1 */
135 { termp_d1_pre, termp_bl_post }, /* Dl */
136 { termp_bd_pre, termp_bd_post }, /* Bd */
137 { NULL, NULL }, /* Ed */
138 { termp_bl_pre, termp_bl_post }, /* Bl */
139 { NULL, NULL }, /* El */
140 { termp_it_pre, termp_it_post }, /* It */
141 { termp_under_pre, NULL }, /* Ad */
142 { termp_an_pre, NULL }, /* An */
143 { termp_ap_pre, NULL }, /* Ap */
144 { termp_under_pre, NULL }, /* Ar */
145 { termp_cd_pre, NULL }, /* Cd */
146 { termp_bold_pre, NULL }, /* Cm */
147 { termp_li_pre, NULL }, /* Dv */
148 { termp_er_pre, NULL }, /* Er */
149 { termp_tag_pre, NULL }, /* Ev */
150 { termp_ex_pre, NULL }, /* Ex */
151 { termp_fa_pre, NULL }, /* Fa */
152 { termp_fd_pre, termp_fd_post }, /* Fd */
153 { termp_fl_pre, NULL }, /* Fl */
154 { termp_fn_pre, NULL }, /* Fn */
155 { termp_ft_pre, NULL }, /* Ft */
156 { termp_bold_pre, NULL }, /* Ic */
157 { termp_in_pre, termp_in_post }, /* In */
158 { termp_li_pre, NULL }, /* Li */
159 { termp_nd_pre, NULL }, /* Nd */
160 { termp_nm_pre, termp_nm_post }, /* Nm */
161 { termp_quote_pre, termp_quote_post }, /* Op */
162 { termp_abort_pre, NULL }, /* Ot */
163 { termp_under_pre, NULL }, /* Pa */
164 { termp_ex_pre, NULL }, /* Rv */
165 { NULL, NULL }, /* St */
166 { termp_under_pre, NULL }, /* Va */
167 { termp_vt_pre, NULL }, /* Vt */
168 { termp_xr_pre, NULL }, /* Xr */
169 { termp__a_pre, termp____post }, /* %A */
170 { termp_under_pre, termp____post }, /* %B */
171 { NULL, termp____post }, /* %D */
172 { termp_under_pre, termp____post }, /* %I */
173 { termp_under_pre, termp____post }, /* %J */
174 { NULL, termp____post }, /* %N */
175 { NULL, termp____post }, /* %O */
176 { NULL, termp____post }, /* %P */
177 { NULL, termp____post }, /* %R */
178 { termp__t_pre, termp__t_post }, /* %T */
179 { NULL, termp____post }, /* %V */
180 { NULL, NULL }, /* Ac */
181 { termp_quote_pre, termp_quote_post }, /* Ao */
182 { termp_quote_pre, termp_quote_post }, /* Aq */
183 { NULL, NULL }, /* At */
184 { NULL, NULL }, /* Bc */
185 { termp_bf_pre, NULL }, /* Bf */
186 { termp_quote_pre, termp_quote_post }, /* Bo */
187 { termp_quote_pre, termp_quote_post }, /* Bq */
188 { termp_xx_pre, termp_xx_post }, /* Bsx */
189 { NULL, NULL }, /* Bx */
190 { termp_skip_pre, NULL }, /* Db */
191 { NULL, NULL }, /* Dc */
192 { termp_quote_pre, termp_quote_post }, /* Do */
193 { termp_quote_pre, termp_quote_post }, /* Dq */
194 { NULL, NULL }, /* Ec */ /* FIXME: no space */
195 { NULL, NULL }, /* Ef */
196 { termp_em_pre, NULL }, /* Em */
197 { termp_eo_pre, termp_eo_post }, /* Eo */
198 { termp_xx_pre, termp_xx_post }, /* Fx */
199 { termp_bold_pre, NULL }, /* Ms */
200 { termp_li_pre, NULL }, /* No */
201 { termp_ns_pre, NULL }, /* Ns */
202 { termp_xx_pre, termp_xx_post }, /* Nx */
203 { termp_xx_pre, termp_xx_post }, /* Ox */
204 { NULL, NULL }, /* Pc */
205 { NULL, termp_pf_post }, /* Pf */
206 { termp_quote_pre, termp_quote_post }, /* Po */
207 { termp_quote_pre, termp_quote_post }, /* Pq */
208 { NULL, NULL }, /* Qc */
209 { termp_quote_pre, termp_quote_post }, /* Ql */
210 { termp_quote_pre, termp_quote_post }, /* Qo */
211 { termp_quote_pre, termp_quote_post }, /* Qq */
212 { NULL, NULL }, /* Re */
213 { termp_rs_pre, NULL }, /* Rs */
214 { NULL, NULL }, /* Sc */
215 { termp_quote_pre, termp_quote_post }, /* So */
216 { termp_quote_pre, termp_quote_post }, /* Sq */
217 { termp_sm_pre, NULL }, /* Sm */
218 { termp_under_pre, NULL }, /* Sx */
219 { termp_sy_pre, NULL }, /* Sy */
220 { NULL, NULL }, /* Tn */
221 { termp_xx_pre, termp_xx_post }, /* Ux */
222 { NULL, NULL }, /* Xc */
223 { NULL, NULL }, /* Xo */
224 { termp_fo_pre, termp_fo_post }, /* Fo */
225 { NULL, NULL }, /* Fc */
226 { termp_quote_pre, termp_quote_post }, /* Oo */
227 { NULL, NULL }, /* Oc */
228 { termp_bk_pre, termp_bk_post }, /* Bk */
229 { NULL, NULL }, /* Ek */
230 { NULL, NULL }, /* Bt */
231 { NULL, NULL }, /* Hf */
232 { termp_under_pre, NULL }, /* Fr */
233 { NULL, NULL }, /* Ud */
234 { NULL, termp_lb_post }, /* Lb */
235 { termp_abort_pre, NULL }, /* Lp */
236 { termp_lk_pre, NULL }, /* Lk */
237 { termp_under_pre, NULL }, /* Mt */
238 { termp_quote_pre, termp_quote_post }, /* Brq */
239 { termp_quote_pre, termp_quote_post }, /* Bro */
240 { NULL, NULL }, /* Brc */
241 { NULL, termp____post }, /* %C */
242 { termp_skip_pre, NULL }, /* Es */
243 { termp_quote_pre, termp_quote_post }, /* En */
244 { termp_xx_pre, termp_xx_post }, /* Dx */
245 { NULL, termp____post }, /* %Q */
246 { NULL, termp____post }, /* %U */
247 { NULL, NULL }, /* Ta */
248 };
249
250 static int fn_prio;
251
252
253 void
254 terminal_mdoc(void *arg, const struct roff_meta *mdoc)
255 {
256 struct roff_node *n;
257 struct termp *p;
258 size_t save_defindent;
259
260 p = (struct termp *)arg;
261 p->tcol->rmargin = p->maxrmargin = p->defrmargin;
262 term_tab_set(p, NULL);
263 term_tab_set(p, "T");
264 term_tab_set(p, ".5i");
265
266 n = mdoc->first->child;
267 if (p->synopsisonly) {
268 while (n != NULL) {
269 if (n->tok == MDOC_Sh && n->sec == SEC_SYNOPSIS) {
270 if (n->child->next->child != NULL)
271 print_mdoc_nodelist(p, NULL,
272 mdoc, n->child->next->child);
273 term_newln(p);
274 break;
275 }
276 n = n->next;
277 }
278 } else {
279 save_defindent = p->defindent;
280 if (p->defindent == 0)
281 p->defindent = 5;
282 term_begin(p, print_mdoc_head, print_mdoc_foot, mdoc);
283 while (n != NULL &&
284 (n->type == ROFFT_COMMENT ||
285 n->flags & NODE_NOPRT))
286 n = n->next;
287 if (n != NULL) {
288 if (n->tok != MDOC_Sh)
289 term_vspace(p);
290 print_mdoc_nodelist(p, NULL, mdoc, n);
291 }
292 term_end(p);
293 p->defindent = save_defindent;
294 }
295 }
296
297 static void
298 print_mdoc_nodelist(DECL_ARGS)
299 {
300
301 while (n != NULL) {
302 print_mdoc_node(p, pair, meta, n);
303 n = n->next;
304 }
305 }
306
307 static void
308 print_mdoc_node(DECL_ARGS)
309 {
310 const struct mdoc_term_act *act;
311 struct termpair npair;
312 size_t offset, rmargin;
313 int chld;
314
315 /*
316 * In no-fill mode, break the output line at the beginning
317 * of new input lines except after \c, and nowhere else.
318 */
319
320 if (n->flags & NODE_NOFILL) {
321 if (n->flags & NODE_LINE &&
322 (p->flags & TERMP_NONEWLINE) == 0)
323 term_newln(p);
324 p->flags |= TERMP_BRNEVER;
325 } else
326 p->flags &= ~TERMP_BRNEVER;
327
328 if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
329 return;
330
331 chld = 1;
332 offset = p->tcol->offset;
333 rmargin = p->tcol->rmargin;
334 n->flags &= ~NODE_ENDED;
335 n->prev_font = p->fonti;
336
337 memset(&npair, 0, sizeof(struct termpair));
338 npair.ppair = pair;
339
340 /*
341 * Keeps only work until the end of a line. If a keep was
342 * invoked in a prior line, revert it to PREKEEP.
343 */
344
345 if (p->flags & TERMP_KEEP && n->flags & NODE_LINE) {
346 p->flags &= ~TERMP_KEEP;
347 p->flags |= TERMP_PREKEEP;
348 }
349
350 /*
351 * After the keep flags have been set up, we may now
352 * produce output. Note that some pre-handlers do so.
353 */
354
355 switch (n->type) {
356 case ROFFT_TEXT:
357 if (n->flags & NODE_LINE) {
358 switch (*n->string) {
359 case '\0':
360 if (p->flags & TERMP_NONEWLINE)
361 term_newln(p);
362 else
363 term_vspace(p);
364 return;
365 case ' ':
366 if ((p->flags & TERMP_NONEWLINE) == 0)
367 term_newln(p);
368 break;
369 default:
370 break;
371 }
372 }
373 if (NODE_DELIMC & n->flags)
374 p->flags |= TERMP_NOSPACE;
375 term_word(p, n->string);
376 if (NODE_DELIMO & n->flags)
377 p->flags |= TERMP_NOSPACE;
378 break;
379 case ROFFT_EQN:
380 if ( ! (n->flags & NODE_LINE))
381 p->flags |= TERMP_NOSPACE;
382 term_eqn(p, n->eqn);
383 if (n->next != NULL && ! (n->next->flags & NODE_LINE))
384 p->flags |= TERMP_NOSPACE;
385 break;
386 case ROFFT_TBL:
387 if (p->tbl.cols == NULL)
388 term_newln(p);
389 term_tbl(p, n->span);
390 break;
391 default:
392 if (n->tok < ROFF_MAX) {
393 roff_term_pre(p, n);
394 return;
395 }
396 assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
397 act = mdoc_term_acts + (n->tok - MDOC_Dd);
398 if (act->pre != NULL &&
399 (n->end == ENDBODY_NOT || n->child != NULL))
400 chld = (*act->pre)(p, &npair, meta, n);
401 break;
402 }
403
404 if (chld && n->child)
405 print_mdoc_nodelist(p, &npair, meta, n->child);
406
407 term_fontpopq(p,
408 (ENDBODY_NOT == n->end ? n : n->body)->prev_font);
409
410 switch (n->type) {
411 case ROFFT_TEXT:
412 break;
413 case ROFFT_TBL:
414 break;
415 case ROFFT_EQN:
416 break;
417 default:
418 if (act->post == NULL || n->flags & NODE_ENDED)
419 break;
420 (void)(*act->post)(p, &npair, meta, n);
421
422 /*
423 * Explicit end tokens not only call the post
424 * handler, but also tell the respective block
425 * that it must not call the post handler again.
426 */
427 if (ENDBODY_NOT != n->end)
428 n->body->flags |= NODE_ENDED;
429 break;
430 }
431
432 if (NODE_EOS & n->flags)
433 p->flags |= TERMP_SENTENCE;
434
435 if (n->type != ROFFT_TEXT)
436 p->tcol->offset = offset;
437 p->tcol->rmargin = rmargin;
438 }
439
440 static void
441 print_mdoc_foot(struct termp *p, const struct roff_meta *meta)
442 {
443 size_t sz;
444
445 term_fontrepl(p, TERMFONT_NONE);
446
447 /*
448 * Output the footer in new-groff style, that is, three columns
449 * with the middle being the manual date and flanking columns
450 * being the operating system:
451 *
452 * SYSTEM DATE SYSTEM
453 */
454
455 term_vspace(p);
456
457 p->tcol->offset = 0;
458 sz = term_strlen(p, meta->date);
459 p->tcol->rmargin = p->maxrmargin > sz ?
460 (p->maxrmargin + term_len(p, 1) - sz) / 2 : 0;
461 p->trailspace = 1;
462 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
463
464 term_word(p, meta->os);
465 term_flushln(p);
466
467 p->tcol->offset = p->tcol->rmargin;
468 sz = term_strlen(p, meta->os);
469 p->tcol->rmargin = p->maxrmargin > sz ? p->maxrmargin - sz : 0;
470 p->flags |= TERMP_NOSPACE;
471
472 term_word(p, meta->date);
473 term_flushln(p);
474
475 p->tcol->offset = p->tcol->rmargin;
476 p->tcol->rmargin = p->maxrmargin;
477 p->trailspace = 0;
478 p->flags &= ~TERMP_NOBREAK;
479 p->flags |= TERMP_NOSPACE;
480
481 term_word(p, meta->os);
482 term_flushln(p);
483
484 p->tcol->offset = 0;
485 p->tcol->rmargin = p->maxrmargin;
486 p->flags = 0;
487 }
488
489 static void
490 print_mdoc_head(struct termp *p, const struct roff_meta *meta)
491 {
492 char *volume, *title;
493 size_t vollen, titlen;
494
495 /*
496 * The header is strange. It has three components, which are
497 * really two with the first duplicated. It goes like this:
498 *
499 * IDENTIFIER TITLE IDENTIFIER
500 *
501 * The IDENTIFIER is NAME(SECTION), which is the command-name
502 * (if given, or "unknown" if not) followed by the manual page
503 * section. These are given in `Dt'. The TITLE is a free-form
504 * string depending on the manual volume. If not specified, it
505 * switches on the manual section.
506 */
507
508 assert(meta->vol);
509 if (NULL == meta->arch)
510 volume = mandoc_strdup(meta->vol);
511 else
512 mandoc_asprintf(&volume, "%s (%s)",
513 meta->vol, meta->arch);
514 vollen = term_strlen(p, volume);
515
516 if (NULL == meta->msec)
517 title = mandoc_strdup(meta->title);
518 else
519 mandoc_asprintf(&title, "%s(%s)",
520 meta->title, meta->msec);
521 titlen = term_strlen(p, title);
522
523 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
524 p->trailspace = 1;
525 p->tcol->offset = 0;
526 p->tcol->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
527 (p->maxrmargin - vollen + term_len(p, 1)) / 2 :
528 vollen < p->maxrmargin ? p->maxrmargin - vollen : 0;
529
530 term_word(p, title);
531 term_flushln(p);
532
533 p->flags |= TERMP_NOSPACE;
534 p->tcol->offset = p->tcol->rmargin;
535 p->tcol->rmargin = p->tcol->offset + vollen + titlen <
536 p->maxrmargin ? p->maxrmargin - titlen : p->maxrmargin;
537
538 term_word(p, volume);
539 term_flushln(p);
540
541 p->flags &= ~TERMP_NOBREAK;
542 p->trailspace = 0;
543 if (p->tcol->rmargin + titlen <= p->maxrmargin) {
544 p->flags |= TERMP_NOSPACE;
545 p->tcol->offset = p->tcol->rmargin;
546 p->tcol->rmargin = p->maxrmargin;
547 term_word(p, title);
548 term_flushln(p);
549 }
550
551 p->flags &= ~TERMP_NOSPACE;
552 p->tcol->offset = 0;
553 p->tcol->rmargin = p->maxrmargin;
554 free(title);
555 free(volume);
556 }
557
558 static int
559 a2width(const struct termp *p, const char *v)
560 {
561 struct roffsu su;
562 const char *end;
563
564 end = a2roffsu(v, &su, SCALE_MAX);
565 if (end == NULL || *end != '\0') {
566 SCALE_HS_INIT(&su, term_strlen(p, v));
567 su.scale /= term_strlen(p, "0");
568 }
569 return term_hen(p, &su);
570 }
571
572 /*
573 * Determine how much space to print out before block elements of `It'
574 * (and thus `Bl') and `Bd'. And then go ahead and print that space,
575 * too.
576 */
577 static void
578 print_bvspace(struct termp *p,
579 const struct roff_node *bl,
580 const struct roff_node *n)
581 {
582 const struct roff_node *nn;
583
584 assert(n);
585
586 term_newln(p);
587
588 if (MDOC_Bd == bl->tok && bl->norm->Bd.comp)
589 return;
590 if (MDOC_Bl == bl->tok && bl->norm->Bl.comp)
591 return;
592
593 /* Do not vspace directly after Ss/Sh. */
594
595 nn = n;
596 while (nn->prev != NULL &&
597 (nn->prev->type == ROFFT_COMMENT ||
598 nn->prev->flags & NODE_NOPRT))
599 nn = nn->prev;
600 while (nn->prev == NULL) {
601 do {
602 nn = nn->parent;
603 if (nn->type == ROFFT_ROOT)
604 return;
605 } while (nn->type != ROFFT_BLOCK);
606 if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
607 return;
608 if (nn->tok == MDOC_It &&
609 nn->parent->parent->norm->Bl.type != LIST_item)
610 break;
611 }
612
613 /* A `-column' does not assert vspace within the list. */
614
615 if (MDOC_Bl == bl->tok && LIST_column == bl->norm->Bl.type)
616 if (n->prev && MDOC_It == n->prev->tok)
617 return;
618
619 /* A `-diag' without body does not vspace. */
620
621 if (MDOC_Bl == bl->tok && LIST_diag == bl->norm->Bl.type)
622 if (n->prev && MDOC_It == n->prev->tok) {
623 assert(n->prev->body);
624 if (NULL == n->prev->body->child)
625 return;
626 }
627
628 term_vspace(p);
629 }
630
631
632 static int
633 termp_it_pre(DECL_ARGS)
634 {
635 struct roffsu su;
636 char buf[24];
637 const struct roff_node *bl, *nn;
638 size_t ncols, dcol;
639 int i, offset, width;
640 enum mdoc_list type;
641
642 if (n->type == ROFFT_BLOCK) {
643 print_bvspace(p, n->parent->parent, n);
644 return 1;
645 }
646
647 bl = n->parent->parent->parent;
648 type = bl->norm->Bl.type;
649
650 /*
651 * Defaults for specific list types.
652 */
653
654 switch (type) {
655 case LIST_bullet:
656 case LIST_dash:
657 case LIST_hyphen:
658 case LIST_enum:
659 width = term_len(p, 2);
660 break;
661 case LIST_hang:
662 case LIST_tag:
663 width = term_len(p, 8);
664 break;
665 case LIST_column:
666 width = term_len(p, 10);
667 break;
668 default:
669 width = 0;
670 break;
671 }
672 offset = 0;
673
674 /*
675 * First calculate width and offset. This is pretty easy unless
676 * we're a -column list, in which case all prior columns must
677 * be accounted for.
678 */
679
680 if (bl->norm->Bl.offs != NULL) {
681 offset = a2width(p, bl->norm->Bl.offs);
682 if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
683 offset = -p->tcol->offset;
684 else if (offset > SHRT_MAX)
685 offset = 0;
686 }
687
688 switch (type) {
689 case LIST_column:
690 if (n->type == ROFFT_HEAD)
691 break;
692
693 /*
694 * Imitate groff's column handling:
695 * - For each earlier column, add its width.
696 * - For less than 5 columns, add four more blanks per
697 * column.
698 * - For exactly 5 columns, add three more blank per
699 * column.
700 * - For more than 5 columns, add only one column.
701 */
702 ncols = bl->norm->Bl.ncols;
703 dcol = ncols < 5 ? term_len(p, 4) :
704 ncols == 5 ? term_len(p, 3) : term_len(p, 1);
705
706 /*
707 * Calculate the offset by applying all prior ROFFT_BODY,
708 * so we stop at the ROFFT_HEAD (nn->prev == NULL).
709 */
710
711 for (i = 0, nn = n->prev;
712 nn->prev && i < (int)ncols;
713 nn = nn->prev, i++) {
714 SCALE_HS_INIT(&su,
715 term_strlen(p, bl->norm->Bl.cols[i]));
716 su.scale /= term_strlen(p, "0");
717 offset += term_hen(p, &su) + dcol;
718 }
719
720 /*
721 * When exceeding the declared number of columns, leave
722 * the remaining widths at 0. This will later be
723 * adjusted to the default width of 10, or, for the last
724 * column, stretched to the right margin.
725 */
726 if (i >= (int)ncols)
727 break;
728
729 /*
730 * Use the declared column widths, extended as explained
731 * in the preceding paragraph.
732 */
733 SCALE_HS_INIT(&su, term_strlen(p, bl->norm->Bl.cols[i]));
734 su.scale /= term_strlen(p, "0");
735 width = term_hen(p, &su) + dcol;
736 break;
737 default:
738 if (NULL == bl->norm->Bl.width)
739 break;
740
741 /*
742 * Note: buffer the width by 2, which is groff's magic
743 * number for buffering single arguments. See the above
744 * handling for column for how this changes.
745 */
746 width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
747 if (width < 0 && (size_t)(-width) > p->tcol->offset)
748 width = -p->tcol->offset;
749 else if (width > SHRT_MAX)
750 width = 0;
751 break;
752 }
753
754 /*
755 * Whitespace control. Inset bodies need an initial space,
756 * while diagonal bodies need two.
757 */
758
759 p->flags |= TERMP_NOSPACE;
760
761 switch (type) {
762 case LIST_diag:
763 if (n->type == ROFFT_BODY)
764 term_word(p, "\\ \\ ");
765 break;
766 case LIST_inset:
767 if (n->type == ROFFT_BODY && n->parent->head->child != NULL)
768 term_word(p, "\\ ");
769 break;
770 default:
771 break;
772 }
773
774 p->flags |= TERMP_NOSPACE;
775
776 switch (type) {
777 case LIST_diag:
778 if (n->type == ROFFT_HEAD)
779 term_fontpush(p, TERMFONT_BOLD);
780 break;
781 default:
782 break;
783 }
784
785 /*
786 * Pad and break control. This is the tricky part. These flags
787 * are documented in term_flushln() in term.c. Note that we're
788 * going to unset all of these flags in termp_it_post() when we
789 * exit.
790 */
791
792 switch (type) {
793 case LIST_enum:
794 case LIST_bullet:
795 case LIST_dash:
796 case LIST_hyphen:
797 if (n->type == ROFFT_HEAD) {
798 p->flags |= TERMP_NOBREAK | TERMP_HANG;
799 p->trailspace = 1;
800 } else if (width <= (int)term_len(p, 2))
801 p->flags |= TERMP_NOPAD;
802 break;
803 case LIST_hang:
804 if (n->type != ROFFT_HEAD)
805 break;
806 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
807 p->trailspace = 1;
808 break;
809 case LIST_tag:
810 if (n->type != ROFFT_HEAD)
811 break;
812
813 p->flags |= TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND;
814 p->trailspace = 2;
815
816 if (NULL == n->next || NULL == n->next->child)
817 p->flags |= TERMP_HANG;
818 break;
819 case LIST_column:
820 if (n->type == ROFFT_HEAD)
821 break;
822
823 if (NULL == n->next) {
824 p->flags &= ~TERMP_NOBREAK;
825 p->trailspace = 0;
826 } else {
827 p->flags |= TERMP_NOBREAK;
828 p->trailspace = 1;
829 }
830
831 break;
832 case LIST_diag:
833 if (n->type != ROFFT_HEAD)
834 break;
835 p->flags |= TERMP_NOBREAK | TERMP_BRIND;
836 p->trailspace = 1;
837 break;
838 default:
839 break;
840 }
841
842 /*
843 * Margin control. Set-head-width lists have their right
844 * margins shortened. The body for these lists has the offset
845 * necessarily lengthened. Everybody gets the offset.
846 */
847
848 p->tcol->offset += offset;
849
850 switch (type) {
851 case LIST_bullet:
852 case LIST_dash:
853 case LIST_enum:
854 case LIST_hyphen:
855 case LIST_hang:
856 case LIST_tag:
857 if (n->type == ROFFT_HEAD)
858 p->tcol->rmargin = p->tcol->offset + width;
859 else
860 p->tcol->offset += width;
861 break;
862 case LIST_column:
863 assert(width);
864 p->tcol->rmargin = p->tcol->offset + width;
865 /*
866 * XXX - this behaviour is not documented: the
867 * right-most column is filled to the right margin.
868 */
869 if (n->type == ROFFT_HEAD)
870 break;
871 if (n->next == NULL && p->tcol->rmargin < p->maxrmargin)
872 p->tcol->rmargin = p->maxrmargin;
873 break;
874 default:
875 break;
876 }
877
878 /*
879 * The dash, hyphen, bullet and enum lists all have a special
880 * HEAD character (temporarily bold, in some cases).
881 */
882
883 if (n->type == ROFFT_HEAD)
884 switch (type) {
885 case LIST_bullet:
886 term_fontpush(p, TERMFONT_BOLD);
887 term_word(p, "\\[bu]");
888 term_fontpop(p);
889 break;
890 case LIST_dash:
891 case LIST_hyphen:
892 term_fontpush(p, TERMFONT_BOLD);
893 term_word(p, "-");
894 term_fontpop(p);
895 break;
896 case LIST_enum:
897 (pair->ppair->ppair->count)++;
898 (void)snprintf(buf, sizeof(buf), "%d.",
899 pair->ppair->ppair->count);
900 term_word(p, buf);
901 break;
902 default:
903 break;
904 }
905
906 /*
907 * If we're not going to process our children, indicate so here.
908 */
909
910 switch (type) {
911 case LIST_bullet:
912 case LIST_item:
913 case LIST_dash:
914 case LIST_hyphen:
915 case LIST_enum:
916 if (n->type == ROFFT_HEAD)
917 return 0;
918 break;
919 case LIST_column:
920 if (n->type == ROFFT_HEAD)
921 return 0;
922 p->minbl = 0;
923 break;
924 default:
925 break;
926 }
927
928 return 1;
929 }
930
931 static void
932 termp_it_post(DECL_ARGS)
933 {
934 enum mdoc_list type;
935
936 if (n->type == ROFFT_BLOCK)
937 return;
938
939 type = n->parent->parent->parent->norm->Bl.type;
940
941 switch (type) {
942 case LIST_item:
943 case LIST_diag:
944 case LIST_inset:
945 if (n->type == ROFFT_BODY)
946 term_newln(p);
947 break;
948 case LIST_column:
949 if (n->type == ROFFT_BODY)
950 term_flushln(p);
951 break;
952 default:
953 term_newln(p);
954 break;
955 }
956
957 /*
958 * Now that our output is flushed, we can reset our tags. Since
959 * only `It' sets these flags, we're free to assume that nobody
960 * has munged them in the meanwhile.
961 */
962
963 p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND | TERMP_HANG);
964 p->trailspace = 0;
965 }
966
967 static int
968 termp_nm_pre(DECL_ARGS)
969 {
970 const char *cp;
971
972 if (n->type == ROFFT_BLOCK) {
973 p->flags |= TERMP_PREKEEP;
974 return 1;
975 }
976
977 if (n->type == ROFFT_BODY) {
978 if (n->child == NULL)
979 return 0;
980 p->flags |= TERMP_NOSPACE;
981 cp = NULL;
982 if (n->prev->child != NULL)
983 cp = n->prev->child->string;
984 if (cp == NULL)
985 cp = meta->name;
986 if (cp == NULL)
987 p->tcol->offset += term_len(p, 6);
988 else
989 p->tcol->offset += term_len(p, 1) +
990 term_strlen(p, cp);
991 return 1;
992 }
993
994 if (n->child == NULL)
995 return 0;
996
997 if (n->type == ROFFT_HEAD)
998 synopsis_pre(p, n->parent);
999
1000 if (n->type == ROFFT_HEAD &&
1001 n->next != NULL && n->next->child != NULL) {
1002 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK | TERMP_BRIND;
1003 p->trailspace = 1;
1004 p->tcol->rmargin = p->tcol->offset + term_len(p, 1);
1005 if (n->child == NULL)
1006 p->tcol->rmargin += term_strlen(p, meta->name);
1007 else if (n->child->type == ROFFT_TEXT) {
1008 p->tcol->rmargin += term_strlen(p, n->child->string);
1009 if (n->child->next != NULL)
1010 p->flags |= TERMP_HANG;
1011 } else {
1012 p->tcol->rmargin += term_len(p, 5);
1013 p->flags |= TERMP_HANG;
1014 }
1015 }
1016
1017 term_fontpush(p, TERMFONT_BOLD);
1018 return 1;
1019 }
1020
1021 static void
1022 termp_nm_post(DECL_ARGS)
1023 {
1024
1025 if (n->type == ROFFT_BLOCK) {
1026 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1027 } else if (n->type == ROFFT_HEAD &&
1028 NULL != n->next && NULL != n->next->child) {
1029 term_flushln(p);
1030 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1031 p->trailspace = 0;
1032 } else if (n->type == ROFFT_BODY && n->child != NULL)
1033 term_flushln(p);
1034 }
1035
1036 static int
1037 termp_fl_pre(DECL_ARGS)
1038 {
1039
1040 termp_tag_pre(p, pair, meta, n);
1041 term_fontpush(p, TERMFONT_BOLD);
1042 term_word(p, "\\-");
1043
1044 if (!(n->child == NULL &&
1045 (n->next == NULL ||
1046 n->next->type == ROFFT_TEXT ||
1047 n->next->flags & NODE_LINE)))
1048 p->flags |= TERMP_NOSPACE;
1049
1050 return 1;
1051 }
1052
1053 static int
1054 termp__a_pre(DECL_ARGS)
1055 {
1056
1057 if (n->prev && MDOC__A == n->prev->tok)
1058 if (NULL == n->next || MDOC__A != n->next->tok)
1059 term_word(p, "and");
1060
1061 return 1;
1062 }
1063
1064 static int
1065 termp_an_pre(DECL_ARGS)
1066 {
1067
1068 if (n->norm->An.auth == AUTH_split) {
1069 p->flags &= ~TERMP_NOSPLIT;
1070 p->flags |= TERMP_SPLIT;
1071 return 0;
1072 }
1073 if (n->norm->An.auth == AUTH_nosplit) {
1074 p->flags &= ~TERMP_SPLIT;
1075 p->flags |= TERMP_NOSPLIT;
1076 return 0;
1077 }
1078
1079 if (p->flags & TERMP_SPLIT)
1080 term_newln(p);
1081
1082 if (n->sec == SEC_AUTHORS && ! (p->flags & TERMP_NOSPLIT))
1083 p->flags |= TERMP_SPLIT;
1084
1085 return 1;
1086 }
1087
1088 static int
1089 termp_ns_pre(DECL_ARGS)
1090 {
1091
1092 if ( ! (NODE_LINE & n->flags))
1093 p->flags |= TERMP_NOSPACE;
1094 return 1;
1095 }
1096
1097 static int
1098 termp_rs_pre(DECL_ARGS)
1099 {
1100
1101 if (SEC_SEE_ALSO != n->sec)
1102 return 1;
1103 if (n->type == ROFFT_BLOCK && n->prev != NULL)
1104 term_vspace(p);
1105 return 1;
1106 }
1107
1108 static int
1109 termp_ex_pre(DECL_ARGS)
1110 {
1111 term_newln(p);
1112 return 1;
1113 }
1114
1115 static int
1116 termp_nd_pre(DECL_ARGS)
1117 {
1118
1119 if (n->type == ROFFT_BODY)
1120 term_word(p, "\\(en");
1121 return 1;
1122 }
1123
1124 static int
1125 termp_bl_pre(DECL_ARGS)
1126 {
1127
1128 return n->type != ROFFT_HEAD;
1129 }
1130
1131 static void
1132 termp_bl_post(DECL_ARGS)
1133 {
1134
1135 if (n->type != ROFFT_BLOCK)
1136 return;
1137 term_newln(p);
1138 if (n->tok != MDOC_Bl || n->norm->Bl.type != LIST_column)
1139 return;
1140 term_tab_set(p, NULL);
1141 term_tab_set(p, "T");
1142 term_tab_set(p, ".5i");
1143 }
1144
1145 static int
1146 termp_xr_pre(DECL_ARGS)
1147 {
1148
1149 if (NULL == (n = n->child))
1150 return 0;
1151
1152 assert(n->type == ROFFT_TEXT);
1153 term_word(p, n->string);
1154
1155 if (NULL == (n = n->next))
1156 return 0;
1157
1158 p->flags |= TERMP_NOSPACE;
1159 term_word(p, "(");
1160 p->flags |= TERMP_NOSPACE;
1161
1162 assert(n->type == ROFFT_TEXT);
1163 term_word(p, n->string);
1164
1165 p->flags |= TERMP_NOSPACE;
1166 term_word(p, ")");
1167
1168 return 0;
1169 }
1170
1171 /*
1172 * This decides how to assert whitespace before any of the SYNOPSIS set
1173 * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
1174 * macro combos).
1175 */
1176 static void
1177 synopsis_pre(struct termp *p, const struct roff_node *n)
1178 {
1179 /*
1180 * Obviously, if we're not in a SYNOPSIS or no prior macros
1181 * exist, do nothing.
1182 */
1183 if (NULL == n->prev || ! (NODE_SYNPRETTY & n->flags))
1184 return;
1185
1186 /*
1187 * If we're the second in a pair of like elements, emit our
1188 * newline and return. UNLESS we're `Fo', `Fn', `Fn', in which
1189 * case we soldier on.
1190 */
1191 if (n->prev->tok == n->tok &&
1192 MDOC_Ft != n->tok &&
1193 MDOC_Fo != n->tok &&
1194 MDOC_Fn != n->tok) {
1195 term_newln(p);
1196 return;
1197 }
1198
1199 /*
1200 * If we're one of the SYNOPSIS set and non-like pair-wise after
1201 * another (or Fn/Fo, which we've let slip through) then assert
1202 * vertical space, else only newline and move on.
1203 */
1204 switch (n->prev->tok) {
1205 case MDOC_Fd:
1206 case MDOC_Fn:
1207 case MDOC_Fo:
1208 case MDOC_In:
1209 case MDOC_Vt:
1210 term_vspace(p);
1211 break;
1212 case MDOC_Ft:
1213 if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
1214 term_vspace(p);
1215 break;
1216 }
1217 /* FALLTHROUGH */
1218 default:
1219 term_newln(p);
1220 break;
1221 }
1222 }
1223
1224 static int
1225 termp_vt_pre(DECL_ARGS)
1226 {
1227
1228 if (n->type == ROFFT_ELEM) {
1229 synopsis_pre(p, n);
1230 return termp_under_pre(p, pair, meta, n);
1231 } else if (n->type == ROFFT_BLOCK) {
1232 synopsis_pre(p, n);
1233 return 1;
1234 } else if (n->type == ROFFT_HEAD)
1235 return 0;
1236
1237 return termp_under_pre(p, pair, meta, n);
1238 }
1239
1240 static int
1241 termp_bold_pre(DECL_ARGS)
1242 {
1243
1244 termp_tag_pre(p, pair, meta, n);
1245 term_fontpush(p, TERMFONT_BOLD);
1246 return 1;
1247 }
1248
1249 static int
1250 termp_fd_pre(DECL_ARGS)
1251 {
1252
1253 synopsis_pre(p, n);
1254 return termp_bold_pre(p, pair, meta, n);
1255 }
1256
1257 static void
1258 termp_fd_post(DECL_ARGS)
1259 {
1260
1261 term_newln(p);
1262 }
1263
1264 static int
1265 termp_sh_pre(DECL_ARGS)
1266 {
1267
1268 switch (n->type) {
1269 case ROFFT_BLOCK:
1270 /*
1271 * Vertical space before sections, except
1272 * when the previous section was empty.
1273 */
1274 if (n->prev == NULL ||
1275 n->prev->tok != MDOC_Sh ||
1276 (n->prev->body != NULL &&
1277 n->prev->body->child != NULL))
1278 term_vspace(p);
1279 break;
1280 case ROFFT_HEAD:
1281 term_fontpush(p, TERMFONT_BOLD);
1282 break;
1283 case ROFFT_BODY:
1284 p->tcol->offset = term_len(p, p->defindent);
1285 term_tab_set(p, NULL);
1286 term_tab_set(p, "T");
1287 term_tab_set(p, ".5i");
1288 switch (n->sec) {
1289 case SEC_DESCRIPTION:
1290 fn_prio = 0;
1291 break;
1292 case SEC_AUTHORS:
1293 p->flags &= ~(TERMP_SPLIT|TERMP_NOSPLIT);
1294 break;
1295 default:
1296 break;
1297 }
1298 break;
1299 default:
1300 break;
1301 }
1302 return 1;
1303 }
1304
1305 static void
1306 termp_sh_post(DECL_ARGS)
1307 {
1308
1309 switch (n->type) {
1310 case ROFFT_HEAD:
1311 term_newln(p);
1312 break;
1313 case ROFFT_BODY:
1314 term_newln(p);
1315 p->tcol->offset = 0;
1316 break;
1317 default:
1318 break;
1319 }
1320 }
1321
1322 static void
1323 termp_lb_post(DECL_ARGS)
1324 {
1325
1326 if (SEC_LIBRARY == n->sec && NODE_LINE & n->flags)
1327 term_newln(p);
1328 }
1329
1330 static int
1331 termp_d1_pre(DECL_ARGS)
1332 {
1333
1334 if (n->type != ROFFT_BLOCK)
1335 return 1;
1336 term_newln(p);
1337 p->tcol->offset += term_len(p, p->defindent + 1);
1338 term_tab_set(p, NULL);
1339 term_tab_set(p, "T");
1340 term_tab_set(p, ".5i");
1341 return 1;
1342 }
1343
1344 static int
1345 termp_ft_pre(DECL_ARGS)
1346 {
1347
1348 /* NB: NODE_LINE does not effect this! */
1349 synopsis_pre(p, n);
1350 term_fontpush(p, TERMFONT_UNDER);
1351 return 1;
1352 }
1353
1354 static int
1355 termp_fn_pre(DECL_ARGS)
1356 {
1357 size_t rmargin = 0;
1358 int pretty;
1359
1360 pretty = NODE_SYNPRETTY & n->flags;
1361
1362 synopsis_pre(p, n);
1363
1364 if (NULL == (n = n->child))
1365 return 0;
1366
1367 if (pretty) {
1368 rmargin = p->tcol->rmargin;
1369 p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
1370 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
1371 }
1372
1373 assert(n->type == ROFFT_TEXT);
1374 term_fontpush(p, TERMFONT_BOLD);
1375 term_word(p, n->string);
1376 term_fontpop(p);
1377
1378 if (n->sec == SEC_DESCRIPTION || n->sec == SEC_CUSTOM)
1379 tag_put(n->string, ++fn_prio, p->line);
1380
1381 if (pretty) {
1382 term_flushln(p);
1383 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1384 p->flags |= TERMP_NOPAD;
1385 p->tcol->offset = p->tcol->rmargin;
1386 p->tcol->rmargin = rmargin;
1387 }
1388
1389 p->flags |= TERMP_NOSPACE;
1390 term_word(p, "(");
1391 p->flags |= TERMP_NOSPACE;
1392
1393 for (n = n->next; n; n = n->next) {
1394 assert(n->type == ROFFT_TEXT);
1395 term_fontpush(p, TERMFONT_UNDER);
1396 if (pretty)
1397 p->flags |= TERMP_NBRWORD;
1398 term_word(p, n->string);
1399 term_fontpop(p);
1400
1401 if (n->next) {
1402 p->flags |= TERMP_NOSPACE;
1403 term_word(p, ",");
1404 }
1405 }
1406
1407 p->flags |= TERMP_NOSPACE;
1408 term_word(p, ")");
1409
1410 if (pretty) {
1411 p->flags |= TERMP_NOSPACE;
1412 term_word(p, ";");
1413 term_flushln(p);
1414 }
1415
1416 return 0;
1417 }
1418
1419 static int
1420 termp_fa_pre(DECL_ARGS)
1421 {
1422 const struct roff_node *nn;
1423
1424 if (n->parent->tok != MDOC_Fo) {
1425 term_fontpush(p, TERMFONT_UNDER);
1426 return 1;
1427 }
1428
1429 for (nn = n->child; nn; nn = nn->next) {
1430 term_fontpush(p, TERMFONT_UNDER);
1431 p->flags |= TERMP_NBRWORD;
1432 term_word(p, nn->string);
1433 term_fontpop(p);
1434
1435 if (nn->next || (n->next && n->next->tok == MDOC_Fa)) {
1436 p->flags |= TERMP_NOSPACE;
1437 term_word(p, ",");
1438 }
1439 }
1440
1441 return 0;
1442 }
1443
1444 static int
1445 termp_bd_pre(DECL_ARGS)
1446 {
1447 int offset;
1448
1449 if (n->type == ROFFT_BLOCK) {
1450 print_bvspace(p, n, n);
1451 return 1;
1452 } else if (n->type == ROFFT_HEAD)
1453 return 0;
1454
1455 /* Handle the -offset argument. */
1456
1457 if (n->norm->Bd.offs == NULL ||
1458 ! strcmp(n->norm->Bd.offs, "left"))
1459 /* nothing */;
1460 else if ( ! strcmp(n->norm->Bd.offs, "indent"))
1461 p->tcol->offset += term_len(p, p->defindent + 1);
1462 else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
1463 p->tcol->offset += term_len(p, (p->defindent + 1) * 2);
1464 else {
1465 offset = a2width(p, n->norm->Bd.offs);
1466 if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
1467 p->tcol->offset = 0;
1468 else if (offset < SHRT_MAX)
1469 p->tcol->offset += offset;
1470 }
1471
1472 switch (n->norm->Bd.type) {
1473 case DISP_literal:
1474 term_tab_set(p, NULL);
1475 term_tab_set(p, "T");
1476 term_tab_set(p, "8n");
1477 break;
1478 case DISP_centered:
1479 p->flags |= TERMP_CENTER;
1480 break;
1481 default:
1482 break;
1483 }
1484 return 1;
1485 }
1486
1487 static void
1488 termp_bd_post(DECL_ARGS)
1489 {
1490 if (n->type != ROFFT_BODY)
1491 return;
1492 if (n->norm->Bd.type == DISP_unfilled ||
1493 n->norm->Bd.type == DISP_literal)
1494 p->flags |= TERMP_BRNEVER;
1495 p->flags |= TERMP_NOSPACE;
1496 term_newln(p);
1497 p->flags &= ~TERMP_BRNEVER;
1498 if (n->norm->Bd.type == DISP_centered)
1499 p->flags &= ~TERMP_CENTER;
1500 }
1501
1502 static int
1503 termp_xx_pre(DECL_ARGS)
1504 {
1505 if ((n->aux = p->flags & TERMP_PREKEEP) == 0)
1506 p->flags |= TERMP_PREKEEP;
1507 return 1;
1508 }
1509
1510 static void
1511 termp_xx_post(DECL_ARGS)
1512 {
1513 if (n->aux == 0)
1514 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1515 }
1516
1517 static void
1518 termp_pf_post(DECL_ARGS)
1519 {
1520
1521 if ( ! (n->next == NULL || n->next->flags & NODE_LINE))
1522 p->flags |= TERMP_NOSPACE;
1523 }
1524
1525 static int
1526 termp_ss_pre(DECL_ARGS)
1527 {
1528 struct roff_node *nn;
1529
1530 switch (n->type) {
1531 case ROFFT_BLOCK:
1532 term_newln(p);
1533 for (nn = n->prev; nn != NULL; nn = nn->prev)
1534 if (nn->type != ROFFT_COMMENT &&
1535 (nn->flags & NODE_NOPRT) == 0)
1536 break;
1537 if (nn != NULL)
1538 term_vspace(p);
1539 break;
1540 case ROFFT_HEAD:
1541 term_fontpush(p, TERMFONT_BOLD);
1542 p->tcol->offset = term_len(p, (p->defindent+1)/2);
1543 break;
1544 case ROFFT_BODY:
1545 p->tcol->offset = term_len(p, p->defindent);
1546 term_tab_set(p, NULL);
1547 term_tab_set(p, "T");
1548 term_tab_set(p, ".5i");
1549 break;
1550 default:
1551 break;
1552 }
1553
1554 return 1;
1555 }
1556
1557 static void
1558 termp_ss_post(DECL_ARGS)
1559 {
1560
1561 if (n->type == ROFFT_HEAD || n->type == ROFFT_BODY)
1562 term_newln(p);
1563 }
1564
1565 static int
1566 termp_cd_pre(DECL_ARGS)
1567 {
1568
1569 synopsis_pre(p, n);
1570 term_fontpush(p, TERMFONT_BOLD);
1571 return 1;
1572 }
1573
1574 static int
1575 termp_in_pre(DECL_ARGS)
1576 {
1577
1578 synopsis_pre(p, n);
1579
1580 if (NODE_SYNPRETTY & n->flags && NODE_LINE & n->flags) {
1581 term_fontpush(p, TERMFONT_BOLD);
1582 term_word(p, "#include");
1583 term_word(p, "<");
1584 } else {
1585 term_word(p, "<");
1586 term_fontpush(p, TERMFONT_UNDER);
1587 }
1588
1589 p->flags |= TERMP_NOSPACE;
1590 return 1;
1591 }
1592
1593 static void
1594 termp_in_post(DECL_ARGS)
1595 {
1596
1597 if (NODE_SYNPRETTY & n->flags)
1598 term_fontpush(p, TERMFONT_BOLD);
1599
1600 p->flags |= TERMP_NOSPACE;
1601 term_word(p, ">");
1602
1603 if (NODE_SYNPRETTY & n->flags)
1604 term_fontpop(p);
1605 }
1606
1607 static int
1608 termp_pp_pre(DECL_ARGS)
1609 {
1610 fn_prio = 0;
1611 term_vspace(p);
1612 return 0;
1613 }
1614
1615 static int
1616 termp_skip_pre(DECL_ARGS)
1617 {
1618
1619 return 0;
1620 }
1621
1622 static int
1623 termp_quote_pre(DECL_ARGS)
1624 {
1625
1626 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1627 return 1;
1628
1629 switch (n->tok) {
1630 case MDOC_Ao:
1631 case MDOC_Aq:
1632 term_word(p, n->child != NULL && n->child->next == NULL &&
1633 n->child->tok == MDOC_Mt ? "<" : "\\(la");
1634 break;
1635 case MDOC_Bro:
1636 case MDOC_Brq:
1637 term_word(p, "{");
1638 break;
1639 case MDOC_Oo:
1640 case MDOC_Op:
1641 case MDOC_Bo:
1642 case MDOC_Bq:
1643 term_word(p, "[");
1644 break;
1645 case MDOC__T:
1646 /* FALLTHROUGH */
1647 case MDOC_Do:
1648 case MDOC_Dq:
1649 term_word(p, "\\(lq");
1650 break;
1651 case MDOC_En:
1652 if (NULL == n->norm->Es ||
1653 NULL == n->norm->Es->child)
1654 return 1;
1655 term_word(p, n->norm->Es->child->string);
1656 break;
1657 case MDOC_Po:
1658 case MDOC_Pq:
1659 term_word(p, "(");
1660 break;
1661 case MDOC_Qo:
1662 case MDOC_Qq:
1663 term_word(p, "\"");
1664 break;
1665 case MDOC_Ql:
1666 case MDOC_So:
1667 case MDOC_Sq:
1668 term_word(p, "\\(oq");
1669 break;
1670 default:
1671 abort();
1672 }
1673
1674 p->flags |= TERMP_NOSPACE;
1675 return 1;
1676 }
1677
1678 static void
1679 termp_quote_post(DECL_ARGS)
1680 {
1681
1682 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1683 return;
1684
1685 p->flags |= TERMP_NOSPACE;
1686
1687 switch (n->tok) {
1688 case MDOC_Ao:
1689 case MDOC_Aq:
1690 term_word(p, n->child != NULL && n->child->next == NULL &&
1691 n->child->tok == MDOC_Mt ? ">" : "\\(ra");
1692 break;
1693 case MDOC_Bro:
1694 case MDOC_Brq:
1695 term_word(p, "}");
1696 break;
1697 case MDOC_Oo:
1698 case MDOC_Op:
1699 case MDOC_Bo:
1700 case MDOC_Bq:
1701 term_word(p, "]");
1702 break;
1703 case MDOC__T:
1704 /* FALLTHROUGH */
1705 case MDOC_Do:
1706 case MDOC_Dq:
1707 term_word(p, "\\(rq");
1708 break;
1709 case MDOC_En:
1710 if (n->norm->Es == NULL ||
1711 n->norm->Es->child == NULL ||
1712 n->norm->Es->child->next == NULL)
1713 p->flags &= ~TERMP_NOSPACE;
1714 else
1715 term_word(p, n->norm->Es->child->next->string);
1716 break;
1717 case MDOC_Po:
1718 case MDOC_Pq:
1719 term_word(p, ")");
1720 break;
1721 case MDOC_Qo:
1722 case MDOC_Qq:
1723 term_word(p, "\"");
1724 break;
1725 case MDOC_Ql:
1726 case MDOC_So:
1727 case MDOC_Sq:
1728 term_word(p, "\\(cq");
1729 break;
1730 default:
1731 abort();
1732 }
1733 }
1734
1735 static int
1736 termp_eo_pre(DECL_ARGS)
1737 {
1738
1739 if (n->type != ROFFT_BODY)
1740 return 1;
1741
1742 if (n->end == ENDBODY_NOT &&
1743 n->parent->head->child == NULL &&
1744 n->child != NULL &&
1745 n->child->end != ENDBODY_NOT)
1746 term_word(p, "\\&");
1747 else if (n->end != ENDBODY_NOT ? n->child != NULL :
1748 n->parent->head->child != NULL && (n->child != NULL ||
1749 (n->parent->tail != NULL && n->parent->tail->child != NULL)))
1750 p->flags |= TERMP_NOSPACE;
1751
1752 return 1;
1753 }
1754
1755 static void
1756 termp_eo_post(DECL_ARGS)
1757 {
1758 int body, tail;
1759
1760 if (n->type != ROFFT_BODY)
1761 return;
1762
1763 if (n->end != ENDBODY_NOT) {
1764 p->flags &= ~TERMP_NOSPACE;
1765 return;
1766 }
1767
1768 body = n->child != NULL || n->parent->head->child != NULL;
1769 tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
1770
1771 if (body && tail)
1772 p->flags |= TERMP_NOSPACE;
1773 else if ( ! (body || tail))
1774 term_word(p, "\\&");
1775 else if ( ! tail)
1776 p->flags &= ~TERMP_NOSPACE;
1777 }
1778
1779 static int
1780 termp_fo_pre(DECL_ARGS)
1781 {
1782 size_t rmargin = 0;
1783 int pretty;
1784
1785 pretty = NODE_SYNPRETTY & n->flags;
1786
1787 if (n->type == ROFFT_BLOCK) {
1788 synopsis_pre(p, n);
1789 return 1;
1790 } else if (n->type == ROFFT_BODY) {
1791 if (pretty) {
1792 rmargin = p->tcol->rmargin;
1793 p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
1794 p->flags |= TERMP_NOBREAK | TERMP_BRIND |
1795 TERMP_HANG;
1796 }
1797 p->flags |= TERMP_NOSPACE;
1798 term_word(p, "(");
1799 p->flags |= TERMP_NOSPACE;
1800 if (pretty) {
1801 term_flushln(p);
1802 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND |
1803 TERMP_HANG);
1804 p->flags |= TERMP_NOPAD;
1805 p->tcol->offset = p->tcol->rmargin;
1806 p->tcol->rmargin = rmargin;
1807 }
1808 return 1;
1809 }
1810
1811 if (NULL == n->child)
1812 return 0;
1813
1814 /* XXX: we drop non-initial arguments as per groff. */
1815
1816 assert(n->child->string);
1817 term_fontpush(p, TERMFONT_BOLD);
1818 term_word(p, n->child->string);
1819 return 0;
1820 }
1821
1822 static void
1823 termp_fo_post(DECL_ARGS)
1824 {
1825
1826 if (n->type != ROFFT_BODY)
1827 return;
1828
1829 p->flags |= TERMP_NOSPACE;
1830 term_word(p, ")");
1831
1832 if (NODE_SYNPRETTY & n->flags) {
1833 p->flags |= TERMP_NOSPACE;
1834 term_word(p, ";");
1835 term_flushln(p);
1836 }
1837 }
1838
1839 static int
1840 termp_bf_pre(DECL_ARGS)
1841 {
1842
1843 if (n->type == ROFFT_HEAD)
1844 return 0;
1845 else if (n->type != ROFFT_BODY)
1846 return 1;
1847
1848 if (FONT_Em == n->norm->Bf.font)
1849 term_fontpush(p, TERMFONT_UNDER);
1850 else if (FONT_Sy == n->norm->Bf.font)
1851 term_fontpush(p, TERMFONT_BOLD);
1852 else
1853 term_fontpush(p, TERMFONT_NONE);
1854
1855 return 1;
1856 }
1857
1858 static int
1859 termp_sm_pre(DECL_ARGS)
1860 {
1861
1862 if (NULL == n->child)
1863 p->flags ^= TERMP_NONOSPACE;
1864 else if (0 == strcmp("on", n->child->string))
1865 p->flags &= ~TERMP_NONOSPACE;
1866 else
1867 p->flags |= TERMP_NONOSPACE;
1868
1869 if (p->col && ! (TERMP_NONOSPACE & p->flags))
1870 p->flags &= ~TERMP_NOSPACE;
1871
1872 return 0;
1873 }
1874
1875 static int
1876 termp_ap_pre(DECL_ARGS)
1877 {
1878
1879 p->flags |= TERMP_NOSPACE;
1880 term_word(p, "'");
1881 p->flags |= TERMP_NOSPACE;
1882 return 1;
1883 }
1884
1885 static void
1886 termp____post(DECL_ARGS)
1887 {
1888
1889 /*
1890 * Handle lists of authors. In general, print each followed by
1891 * a comma. Don't print the comma if there are only two
1892 * authors.
1893 */
1894 if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
1895 if (NULL == n->next->next || MDOC__A != n->next->next->tok)
1896 if (NULL == n->prev || MDOC__A != n->prev->tok)
1897 return;
1898
1899 /* TODO: %U. */
1900
1901 if (NULL == n->parent || MDOC_Rs != n->parent->tok)
1902 return;
1903
1904 p->flags |= TERMP_NOSPACE;
1905 if (NULL == n->next) {
1906 term_word(p, ".");
1907 p->flags |= TERMP_SENTENCE;
1908 } else
1909 term_word(p, ",");
1910 }
1911
1912 static int
1913 termp_li_pre(DECL_ARGS)
1914 {
1915
1916 termp_tag_pre(p, pair, meta, n);
1917 term_fontpush(p, TERMFONT_NONE);
1918 return 1;
1919 }
1920
1921 static int
1922 termp_lk_pre(DECL_ARGS)
1923 {
1924 const struct roff_node *link, *descr, *punct;
1925
1926 if ((link = n->child) == NULL)
1927 return 0;
1928
1929 /* Find beginning of trailing punctuation. */
1930 punct = n->last;
1931 while (punct != link && punct->flags & NODE_DELIMC)
1932 punct = punct->prev;
1933 punct = punct->next;
1934
1935 /* Link text. */
1936 if ((descr = link->next) != NULL && descr != punct) {
1937 term_fontpush(p, TERMFONT_UNDER);
1938 while (descr != punct) {
1939 if (descr->flags & (NODE_DELIMC | NODE_DELIMO))
1940 p->flags |= TERMP_NOSPACE;
1941 term_word(p, descr->string);
1942 descr = descr->next;
1943 }
1944 term_fontpop(p);
1945 p->flags |= TERMP_NOSPACE;
1946 term_word(p, ":");
1947 }
1948
1949 /* Link target. */
1950 term_fontpush(p, TERMFONT_BOLD);
1951 term_word(p, link->string);
1952 term_fontpop(p);
1953
1954 /* Trailing punctuation. */
1955 while (punct != NULL) {
1956 p->flags |= TERMP_NOSPACE;
1957 term_word(p, punct->string);
1958 punct = punct->next;
1959 }
1960 return 0;
1961 }
1962
1963 static int
1964 termp_bk_pre(DECL_ARGS)
1965 {
1966
1967 switch (n->type) {
1968 case ROFFT_BLOCK:
1969 break;
1970 case ROFFT_HEAD:
1971 return 0;
1972 case ROFFT_BODY:
1973 if (n->parent->args != NULL || n->prev->child == NULL)
1974 p->flags |= TERMP_PREKEEP;
1975 break;
1976 default:
1977 abort();
1978 }
1979
1980 return 1;
1981 }
1982
1983 static void
1984 termp_bk_post(DECL_ARGS)
1985 {
1986
1987 if (n->type == ROFFT_BODY)
1988 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1989 }
1990
1991 static void
1992 termp__t_post(DECL_ARGS)
1993 {
1994
1995 /*
1996 * If we're in an `Rs' and there's a journal present, then quote
1997 * us instead of underlining us (for disambiguation).
1998 */
1999 if (n->parent && MDOC_Rs == n->parent->tok &&
2000 n->parent->norm->Rs.quote_T)
2001 termp_quote_post(p, pair, meta, n);
2002
2003 termp____post(p, pair, meta, n);
2004 }
2005
2006 static int
2007 termp__t_pre(DECL_ARGS)
2008 {
2009
2010 /*
2011 * If we're in an `Rs' and there's a journal present, then quote
2012 * us instead of underlining us (for disambiguation).
2013 */
2014 if (n->parent && MDOC_Rs == n->parent->tok &&
2015 n->parent->norm->Rs.quote_T)
2016 return termp_quote_pre(p, pair, meta, n);
2017
2018 term_fontpush(p, TERMFONT_UNDER);
2019 return 1;
2020 }
2021
2022 static int
2023 termp_under_pre(DECL_ARGS)
2024 {
2025
2026 term_fontpush(p, TERMFONT_UNDER);
2027 return 1;
2028 }
2029
2030 static int
2031 termp_em_pre(DECL_ARGS)
2032 {
2033 if (n->child != NULL &&
2034 n->child->type == ROFFT_TEXT)
2035 tag_put(n->child->string, 0, p->line);
2036 term_fontpush(p, TERMFONT_UNDER);
2037 return 1;
2038 }
2039
2040 static int
2041 termp_sy_pre(DECL_ARGS)
2042 {
2043 if (n->child != NULL &&
2044 n->child->type == ROFFT_TEXT)
2045 tag_put(n->child->string, 0, p->line);
2046 term_fontpush(p, TERMFONT_BOLD);
2047 return 1;
2048 }
2049
2050 static int
2051 termp_er_pre(DECL_ARGS)
2052 {
2053
2054 if (n->sec == SEC_ERRORS &&
2055 (n->parent->tok == MDOC_It ||
2056 (n->parent->tok == MDOC_Bq &&
2057 n->parent->parent->parent->tok == MDOC_It)))
2058 tag_put(n->child->string, 1, p->line);
2059 return 1;
2060 }
2061
2062 static int
2063 termp_tag_pre(DECL_ARGS)
2064 {
2065
2066 if (n->child != NULL &&
2067 n->child->type == ROFFT_TEXT &&
2068 (n->prev == NULL ||
2069 (n->prev->type == ROFFT_TEXT &&
2070 strcmp(n->prev->string, "|") == 0)) &&
2071 (n->parent->tok == MDOC_It ||
2072 (n->parent->tok == MDOC_Xo &&
2073 n->parent->parent->prev == NULL &&
2074 n->parent->parent->parent->tok == MDOC_It)))
2075 tag_put(n->child->string, 1, p->line);
2076 return 1;
2077 }
2078
2079 static int
2080 termp_abort_pre(DECL_ARGS)
2081 {
2082 abort();
2083 }
Unleashed OS