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1 /* $Id: mdoc_term.c,v 1.341 2017/01/11 17:39:53 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010, 2012-2017 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 "mandoc.h"
33 #include "roff.h"
34 #include "mdoc.h"
35 #include "out.h"
36 #include "term.h"
37 #include "tag.h"
38 #include "main.h"
39
40 struct termpair {
41 struct termpair *ppair;
42 int count;
43 };
44
45 #define DECL_ARGS struct termp *p, \
46 struct termpair *pair, \
47 const struct roff_meta *meta, \
48 struct roff_node *n
49
50 struct termact {
51 int (*pre)(DECL_ARGS);
52 void (*post)(DECL_ARGS);
53 };
54
55 static int a2width(const struct termp *, const char *);
56
57 static void print_bvspace(struct termp *,
58 const struct roff_node *,
59 const struct roff_node *);
60 static void print_mdoc_node(DECL_ARGS);
61 static void print_mdoc_nodelist(DECL_ARGS);
62 static void print_mdoc_head(struct termp *, const struct roff_meta *);
63 static void print_mdoc_foot(struct termp *, const struct roff_meta *);
64 static void synopsis_pre(struct termp *,
65 const struct roff_node *);
66
67 static void termp____post(DECL_ARGS);
68 static void termp__t_post(DECL_ARGS);
69 static void termp_bd_post(DECL_ARGS);
70 static void termp_bk_post(DECL_ARGS);
71 static void termp_bl_post(DECL_ARGS);
72 static void termp_eo_post(DECL_ARGS);
73 static void termp_fd_post(DECL_ARGS);
74 static void termp_fo_post(DECL_ARGS);
75 static void termp_in_post(DECL_ARGS);
76 static void termp_it_post(DECL_ARGS);
77 static void termp_lb_post(DECL_ARGS);
78 static void termp_nm_post(DECL_ARGS);
79 static void termp_pf_post(DECL_ARGS);
80 static void termp_quote_post(DECL_ARGS);
81 static void termp_sh_post(DECL_ARGS);
82 static void termp_ss_post(DECL_ARGS);
83 static void termp_xx_post(DECL_ARGS);
84
85 static int termp__a_pre(DECL_ARGS);
86 static int termp__t_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_ll_pre(DECL_ARGS);
110 static int termp_lk_pre(DECL_ARGS);
111 static int termp_nd_pre(DECL_ARGS);
112 static int termp_nm_pre(DECL_ARGS);
113 static int termp_ns_pre(DECL_ARGS);
114 static int termp_quote_pre(DECL_ARGS);
115 static int termp_rs_pre(DECL_ARGS);
116 static int termp_sh_pre(DECL_ARGS);
117 static int termp_skip_pre(DECL_ARGS);
118 static int termp_sm_pre(DECL_ARGS);
119 static int termp_sp_pre(DECL_ARGS);
120 static int termp_ss_pre(DECL_ARGS);
121 static int termp_sy_pre(DECL_ARGS);
122 static int termp_tag_pre(DECL_ARGS);
123 static int termp_under_pre(DECL_ARGS);
124 static int termp_vt_pre(DECL_ARGS);
125 static int termp_xr_pre(DECL_ARGS);
126 static int termp_xx_pre(DECL_ARGS);
127
128 static const struct termact termacts[MDOC_MAX] = {
129 { termp_ap_pre, NULL }, /* Ap */
130 { NULL, NULL }, /* Dd */
131 { NULL, NULL }, /* Dt */
132 { NULL, NULL }, /* Os */
133 { termp_sh_pre, termp_sh_post }, /* Sh */
134 { termp_ss_pre, termp_ss_post }, /* Ss */
135 { termp_sp_pre, NULL }, /* Pp */
136 { termp_d1_pre, termp_bl_post }, /* D1 */
137 { termp_d1_pre, termp_bl_post }, /* Dl */
138 { termp_bd_pre, termp_bd_post }, /* Bd */
139 { NULL, NULL }, /* Ed */
140 { termp_bl_pre, termp_bl_post }, /* Bl */
141 { NULL, NULL }, /* El */
142 { termp_it_pre, termp_it_post }, /* It */
143 { termp_under_pre, NULL }, /* Ad */
144 { termp_an_pre, NULL }, /* An */
145 { termp_under_pre, NULL }, /* Ar */
146 { termp_cd_pre, NULL }, /* Cd */
147 { termp_bold_pre, NULL }, /* Cm */
148 { termp_li_pre, NULL }, /* Dv */
149 { termp_er_pre, NULL }, /* Er */
150 { termp_tag_pre, NULL }, /* Ev */
151 { termp_ex_pre, NULL }, /* Ex */
152 { termp_fa_pre, NULL }, /* Fa */
153 { termp_fd_pre, termp_fd_post }, /* Fd */
154 { termp_fl_pre, NULL }, /* Fl */
155 { termp_fn_pre, NULL }, /* Fn */
156 { termp_ft_pre, NULL }, /* Ft */
157 { termp_bold_pre, NULL }, /* Ic */
158 { termp_in_pre, termp_in_post }, /* In */
159 { termp_li_pre, NULL }, /* Li */
160 { termp_nd_pre, NULL }, /* Nd */
161 { termp_nm_pre, termp_nm_post }, /* Nm */
162 { termp_quote_pre, termp_quote_post }, /* Op */
163 { termp_ft_pre, NULL }, /* Ot */
164 { termp_under_pre, NULL }, /* Pa */
165 { termp_ex_pre, NULL }, /* Rv */
166 { NULL, NULL }, /* St */
167 { termp_under_pre, NULL }, /* Va */
168 { termp_vt_pre, NULL }, /* Vt */
169 { termp_xr_pre, NULL }, /* Xr */
170 { termp__a_pre, termp____post }, /* %A */
171 { termp_under_pre, termp____post }, /* %B */
172 { NULL, termp____post }, /* %D */
173 { termp_under_pre, termp____post }, /* %I */
174 { termp_under_pre, termp____post }, /* %J */
175 { NULL, termp____post }, /* %N */
176 { NULL, termp____post }, /* %O */
177 { NULL, termp____post }, /* %P */
178 { NULL, termp____post }, /* %R */
179 { termp__t_pre, termp__t_post }, /* %T */
180 { NULL, termp____post }, /* %V */
181 { NULL, NULL }, /* Ac */
182 { termp_quote_pre, termp_quote_post }, /* Ao */
183 { termp_quote_pre, termp_quote_post }, /* Aq */
184 { NULL, NULL }, /* At */
185 { NULL, NULL }, /* Bc */
186 { termp_bf_pre, NULL }, /* Bf */
187 { termp_quote_pre, termp_quote_post }, /* Bo */
188 { termp_quote_pre, termp_quote_post }, /* Bq */
189 { termp_xx_pre, termp_xx_post }, /* Bsx */
190 { NULL, NULL }, /* Bx */
191 { termp_skip_pre, NULL }, /* Db */
192 { NULL, NULL }, /* Dc */
193 { termp_quote_pre, termp_quote_post }, /* Do */
194 { termp_quote_pre, termp_quote_post }, /* Dq */
195 { NULL, NULL }, /* Ec */ /* FIXME: no space */
196 { NULL, NULL }, /* Ef */
197 { termp_em_pre, NULL }, /* Em */
198 { termp_eo_pre, termp_eo_post }, /* Eo */
199 { termp_xx_pre, termp_xx_post }, /* Fx */
200 { termp_bold_pre, NULL }, /* Ms */
201 { termp_li_pre, NULL }, /* No */
202 { termp_ns_pre, NULL }, /* Ns */
203 { termp_xx_pre, termp_xx_post }, /* Nx */
204 { termp_xx_pre, termp_xx_post }, /* Ox */
205 { NULL, NULL }, /* Pc */
206 { NULL, termp_pf_post }, /* Pf */
207 { termp_quote_pre, termp_quote_post }, /* Po */
208 { termp_quote_pre, termp_quote_post }, /* Pq */
209 { NULL, NULL }, /* Qc */
210 { termp_quote_pre, termp_quote_post }, /* Ql */
211 { termp_quote_pre, termp_quote_post }, /* Qo */
212 { termp_quote_pre, termp_quote_post }, /* Qq */
213 { NULL, NULL }, /* Re */
214 { termp_rs_pre, NULL }, /* Rs */
215 { NULL, NULL }, /* Sc */
216 { termp_quote_pre, termp_quote_post }, /* So */
217 { termp_quote_pre, termp_quote_post }, /* Sq */
218 { termp_sm_pre, NULL }, /* Sm */
219 { termp_under_pre, NULL }, /* Sx */
220 { termp_sy_pre, NULL }, /* Sy */
221 { NULL, NULL }, /* Tn */
222 { termp_xx_pre, termp_xx_post }, /* Ux */
223 { NULL, NULL }, /* Xc */
224 { NULL, NULL }, /* Xo */
225 { termp_fo_pre, termp_fo_post }, /* Fo */
226 { NULL, NULL }, /* Fc */
227 { termp_quote_pre, termp_quote_post }, /* Oo */
228 { NULL, NULL }, /* Oc */
229 { termp_bk_pre, termp_bk_post }, /* Bk */
230 { NULL, NULL }, /* Ek */
231 { NULL, NULL }, /* Bt */
232 { NULL, NULL }, /* Hf */
233 { termp_under_pre, NULL }, /* Fr */
234 { NULL, NULL }, /* Ud */
235 { NULL, termp_lb_post }, /* Lb */
236 { termp_sp_pre, NULL }, /* Lp */
237 { termp_lk_pre, NULL }, /* Lk */
238 { termp_under_pre, NULL }, /* Mt */
239 { termp_quote_pre, termp_quote_post }, /* Brq */
240 { termp_quote_pre, termp_quote_post }, /* Bro */
241 { NULL, NULL }, /* Brc */
242 { NULL, termp____post }, /* %C */
243 { termp_skip_pre, NULL }, /* Es */
244 { termp_quote_pre, termp_quote_post }, /* En */
245 { termp_xx_pre, termp_xx_post }, /* Dx */
246 { NULL, termp____post }, /* %Q */
247 { termp_sp_pre, NULL }, /* br */
248 { termp_sp_pre, NULL }, /* sp */
249 { NULL, termp____post }, /* %U */
250 { NULL, NULL }, /* Ta */
251 { termp_ll_pre, NULL }, /* ll */
252 };
253
254 static int fn_prio;
255
256 void
257 terminal_mdoc(void *arg, const struct roff_man *mdoc)
258 {
259 struct roff_node *n;
260 struct termp *p;
261
262 p = (struct termp *)arg;
263 p->overstep = 0;
264 p->rmargin = p->maxrmargin = p->defrmargin;
265 p->tabwidth = term_len(p, 5);
266
267 n = mdoc->first->child;
268 if (p->synopsisonly) {
269 while (n != NULL) {
270 if (n->tok == MDOC_Sh && n->sec == SEC_SYNOPSIS) {
271 if (n->child->next->child != NULL)
272 print_mdoc_nodelist(p, NULL,
273 &mdoc->meta,
274 n->child->next->child);
275 term_newln(p);
276 break;
277 }
278 n = n->next;
279 }
280 } else {
281 if (p->defindent == 0)
282 p->defindent = 5;
283 term_begin(p, print_mdoc_head, print_mdoc_foot,
284 &mdoc->meta);
285 while (n != NULL && 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->meta, n);
291 }
292 term_end(p);
293 }
294 }
295
296 static void
297 print_mdoc_nodelist(DECL_ARGS)
298 {
299
300 while (n != NULL) {
301 print_mdoc_node(p, pair, meta, n);
302 n = n->next;
303 }
304 }
305
306 static void
307 print_mdoc_node(DECL_ARGS)
308 {
309 int chld;
310 struct termpair npair;
311 size_t offset, rmargin;
312
313 if (n->flags & NODE_NOPRT)
314 return;
315
316 chld = 1;
317 offset = p->offset;
318 rmargin = p->rmargin;
319 n->flags &= ~NODE_ENDED;
320 n->prev_font = p->fonti;
321
322 memset(&npair, 0, sizeof(struct termpair));
323 npair.ppair = pair;
324
325 /*
326 * Keeps only work until the end of a line. If a keep was
327 * invoked in a prior line, revert it to PREKEEP.
328 */
329
330 if (p->flags & TERMP_KEEP && n->flags & NODE_LINE) {
331 p->flags &= ~TERMP_KEEP;
332 p->flags |= TERMP_PREKEEP;
333 }
334
335 /*
336 * After the keep flags have been set up, we may now
337 * produce output. Note that some pre-handlers do so.
338 */
339
340 switch (n->type) {
341 case ROFFT_TEXT:
342 if (' ' == *n->string && NODE_LINE & n->flags)
343 term_newln(p);
344 if (NODE_DELIMC & n->flags)
345 p->flags |= TERMP_NOSPACE;
346 term_word(p, n->string);
347 if (NODE_DELIMO & n->flags)
348 p->flags |= TERMP_NOSPACE;
349 break;
350 case ROFFT_EQN:
351 if ( ! (n->flags & NODE_LINE))
352 p->flags |= TERMP_NOSPACE;
353 term_eqn(p, n->eqn);
354 if (n->next != NULL && ! (n->next->flags & NODE_LINE))
355 p->flags |= TERMP_NOSPACE;
356 break;
357 case ROFFT_TBL:
358 if (p->tbl.cols == NULL)
359 term_newln(p);
360 term_tbl(p, n->span);
361 break;
362 default:
363 if (termacts[n->tok].pre &&
364 (n->end == ENDBODY_NOT || n->child != NULL))
365 chld = (*termacts[n->tok].pre)
366 (p, &npair, meta, n);
367 break;
368 }
369
370 if (chld && n->child)
371 print_mdoc_nodelist(p, &npair, meta, n->child);
372
373 term_fontpopq(p,
374 (ENDBODY_NOT == n->end ? n : n->body)->prev_font);
375
376 switch (n->type) {
377 case ROFFT_TEXT:
378 break;
379 case ROFFT_TBL:
380 break;
381 case ROFFT_EQN:
382 break;
383 default:
384 if ( ! termacts[n->tok].post || NODE_ENDED & n->flags)
385 break;
386 (void)(*termacts[n->tok].post)(p, &npair, meta, n);
387
388 /*
389 * Explicit end tokens not only call the post
390 * handler, but also tell the respective block
391 * that it must not call the post handler again.
392 */
393 if (ENDBODY_NOT != n->end)
394 n->body->flags |= NODE_ENDED;
395
396 /*
397 * End of line terminating an implicit block
398 * while an explicit block is still open.
399 * Continue the explicit block without spacing.
400 */
401 if (ENDBODY_NOSPACE == n->end)
402 p->flags |= TERMP_NOSPACE;
403 break;
404 }
405
406 if (NODE_EOS & n->flags)
407 p->flags |= TERMP_SENTENCE;
408
409 if (MDOC_ll != n->tok) {
410 p->offset = offset;
411 p->rmargin = rmargin;
412 }
413 }
414
415 static void
416 print_mdoc_foot(struct termp *p, const struct roff_meta *meta)
417 {
418 size_t sz;
419
420 term_fontrepl(p, TERMFONT_NONE);
421
422 /*
423 * Output the footer in new-groff style, that is, three columns
424 * with the middle being the manual date and flanking columns
425 * being the operating system:
426 *
427 * SYSTEM DATE SYSTEM
428 */
429
430 term_vspace(p);
431
432 p->offset = 0;
433 sz = term_strlen(p, meta->date);
434 p->rmargin = p->maxrmargin > sz ?
435 (p->maxrmargin + term_len(p, 1) - sz) / 2 : 0;
436 p->trailspace = 1;
437 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
438
439 term_word(p, meta->os);
440 term_flushln(p);
441
442 p->offset = p->rmargin;
443 sz = term_strlen(p, meta->os);
444 p->rmargin = p->maxrmargin > sz ? p->maxrmargin - sz : 0;
445 p->flags |= TERMP_NOSPACE;
446
447 term_word(p, meta->date);
448 term_flushln(p);
449
450 p->offset = p->rmargin;
451 p->rmargin = p->maxrmargin;
452 p->trailspace = 0;
453 p->flags &= ~TERMP_NOBREAK;
454 p->flags |= TERMP_NOSPACE;
455
456 term_word(p, meta->os);
457 term_flushln(p);
458
459 p->offset = 0;
460 p->rmargin = p->maxrmargin;
461 p->flags = 0;
462 }
463
464 static void
465 print_mdoc_head(struct termp *p, const struct roff_meta *meta)
466 {
467 char *volume, *title;
468 size_t vollen, titlen;
469
470 /*
471 * The header is strange. It has three components, which are
472 * really two with the first duplicated. It goes like this:
473 *
474 * IDENTIFIER TITLE IDENTIFIER
475 *
476 * The IDENTIFIER is NAME(SECTION), which is the command-name
477 * (if given, or "unknown" if not) followed by the manual page
478 * section. These are given in `Dt'. The TITLE is a free-form
479 * string depending on the manual volume. If not specified, it
480 * switches on the manual section.
481 */
482
483 assert(meta->vol);
484 if (NULL == meta->arch)
485 volume = mandoc_strdup(meta->vol);
486 else
487 mandoc_asprintf(&volume, "%s (%s)",
488 meta->vol, meta->arch);
489 vollen = term_strlen(p, volume);
490
491 if (NULL == meta->msec)
492 title = mandoc_strdup(meta->title);
493 else
494 mandoc_asprintf(&title, "%s(%s)",
495 meta->title, meta->msec);
496 titlen = term_strlen(p, title);
497
498 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
499 p->trailspace = 1;
500 p->offset = 0;
501 p->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
502 (p->maxrmargin - vollen + term_len(p, 1)) / 2 :
503 vollen < p->maxrmargin ? p->maxrmargin - vollen : 0;
504
505 term_word(p, title);
506 term_flushln(p);
507
508 p->flags |= TERMP_NOSPACE;
509 p->offset = p->rmargin;
510 p->rmargin = p->offset + vollen + titlen < p->maxrmargin ?
511 p->maxrmargin - titlen : p->maxrmargin;
512
513 term_word(p, volume);
514 term_flushln(p);
515
516 p->flags &= ~TERMP_NOBREAK;
517 p->trailspace = 0;
518 if (p->rmargin + titlen <= p->maxrmargin) {
519 p->flags |= TERMP_NOSPACE;
520 p->offset = p->rmargin;
521 p->rmargin = p->maxrmargin;
522 term_word(p, title);
523 term_flushln(p);
524 }
525
526 p->flags &= ~TERMP_NOSPACE;
527 p->offset = 0;
528 p->rmargin = p->maxrmargin;
529 free(title);
530 free(volume);
531 }
532
533 static int
534 a2width(const struct termp *p, const char *v)
535 {
536 struct roffsu su;
537
538 if (a2roffsu(v, &su, SCALE_MAX) < 2) {
539 SCALE_HS_INIT(&su, term_strlen(p, v));
540 su.scale /= term_strlen(p, "0");
541 }
542 return term_hspan(p, &su) / 24;
543 }
544
545 /*
546 * Determine how much space to print out before block elements of `It'
547 * (and thus `Bl') and `Bd'. And then go ahead and print that space,
548 * too.
549 */
550 static void
551 print_bvspace(struct termp *p,
552 const struct roff_node *bl,
553 const struct roff_node *n)
554 {
555 const struct roff_node *nn;
556
557 assert(n);
558
559 term_newln(p);
560
561 if (MDOC_Bd == bl->tok && bl->norm->Bd.comp)
562 return;
563 if (MDOC_Bl == bl->tok && bl->norm->Bl.comp)
564 return;
565
566 /* Do not vspace directly after Ss/Sh. */
567
568 nn = n;
569 while (nn->prev != NULL && nn->prev->flags & NODE_NOPRT)
570 nn = nn->prev;
571 while (nn->prev == NULL) {
572 do {
573 nn = nn->parent;
574 if (nn->type == ROFFT_ROOT)
575 return;
576 } while (nn->type != ROFFT_BLOCK);
577 if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
578 return;
579 if (nn->tok == MDOC_It &&
580 nn->parent->parent->norm->Bl.type != LIST_item)
581 break;
582 }
583
584 /* A `-column' does not assert vspace within the list. */
585
586 if (MDOC_Bl == bl->tok && LIST_column == bl->norm->Bl.type)
587 if (n->prev && MDOC_It == n->prev->tok)
588 return;
589
590 /* A `-diag' without body does not vspace. */
591
592 if (MDOC_Bl == bl->tok && LIST_diag == bl->norm->Bl.type)
593 if (n->prev && MDOC_It == n->prev->tok) {
594 assert(n->prev->body);
595 if (NULL == n->prev->body->child)
596 return;
597 }
598
599 term_vspace(p);
600 }
601
602
603 static int
604 termp_ll_pre(DECL_ARGS)
605 {
606
607 term_setwidth(p, n->child != NULL ? n->child->string : NULL);
608 return 0;
609 }
610
611 static int
612 termp_it_pre(DECL_ARGS)
613 {
614 char buf[24];
615 const struct roff_node *bl, *nn;
616 size_t ncols, dcol;
617 int i, offset, width;
618 enum mdoc_list type;
619
620 if (n->type == ROFFT_BLOCK) {
621 print_bvspace(p, n->parent->parent, n);
622 return 1;
623 }
624
625 bl = n->parent->parent->parent;
626 type = bl->norm->Bl.type;
627
628 /*
629 * Defaults for specific list types.
630 */
631
632 switch (type) {
633 case LIST_bullet:
634 case LIST_dash:
635 case LIST_hyphen:
636 case LIST_enum:
637 width = term_len(p, 2);
638 break;
639 case LIST_hang:
640 case LIST_tag:
641 width = term_len(p, 8);
642 break;
643 case LIST_column:
644 width = term_len(p, 10);
645 break;
646 default:
647 width = 0;
648 break;
649 }
650 offset = 0;
651
652 /*
653 * First calculate width and offset. This is pretty easy unless
654 * we're a -column list, in which case all prior columns must
655 * be accounted for.
656 */
657
658 if (bl->norm->Bl.offs != NULL) {
659 offset = a2width(p, bl->norm->Bl.offs);
660 if (offset < 0 && (size_t)(-offset) > p->offset)
661 offset = -p->offset;
662 else if (offset > SHRT_MAX)
663 offset = 0;
664 }
665
666 switch (type) {
667 case LIST_column:
668 if (n->type == ROFFT_HEAD)
669 break;
670
671 /*
672 * Imitate groff's column handling:
673 * - For each earlier column, add its width.
674 * - For less than 5 columns, add four more blanks per
675 * column.
676 * - For exactly 5 columns, add three more blank per
677 * column.
678 * - For more than 5 columns, add only one column.
679 */
680 ncols = bl->norm->Bl.ncols;
681 dcol = ncols < 5 ? term_len(p, 4) :
682 ncols == 5 ? term_len(p, 3) : term_len(p, 1);
683
684 /*
685 * Calculate the offset by applying all prior ROFFT_BODY,
686 * so we stop at the ROFFT_HEAD (nn->prev == NULL).
687 */
688
689 for (i = 0, nn = n->prev;
690 nn->prev && i < (int)ncols;
691 nn = nn->prev, i++)
692 offset += dcol + a2width(p,
693 bl->norm->Bl.cols[i]);
694
695 /*
696 * When exceeding the declared number of columns, leave
697 * the remaining widths at 0. This will later be
698 * adjusted to the default width of 10, or, for the last
699 * column, stretched to the right margin.
700 */
701 if (i >= (int)ncols)
702 break;
703
704 /*
705 * Use the declared column widths, extended as explained
706 * in the preceding paragraph.
707 */
708 width = a2width(p, bl->norm->Bl.cols[i]) + dcol;
709 break;
710 default:
711 if (NULL == bl->norm->Bl.width)
712 break;
713
714 /*
715 * Note: buffer the width by 2, which is groff's magic
716 * number for buffering single arguments. See the above
717 * handling for column for how this changes.
718 */
719 width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
720 if (width < 0 && (size_t)(-width) > p->offset)
721 width = -p->offset;
722 else if (width > SHRT_MAX)
723 width = 0;
724 break;
725 }
726
727 /*
728 * Whitespace control. Inset bodies need an initial space,
729 * while diagonal bodies need two.
730 */
731
732 p->flags |= TERMP_NOSPACE;
733
734 switch (type) {
735 case LIST_diag:
736 if (n->type == ROFFT_BODY)
737 term_word(p, "\\ \\ ");
738 break;
739 case LIST_inset:
740 if (n->type == ROFFT_BODY && n->parent->head->child != NULL)
741 term_word(p, "\\ ");
742 break;
743 default:
744 break;
745 }
746
747 p->flags |= TERMP_NOSPACE;
748
749 switch (type) {
750 case LIST_diag:
751 if (n->type == ROFFT_HEAD)
752 term_fontpush(p, TERMFONT_BOLD);
753 break;
754 default:
755 break;
756 }
757
758 /*
759 * Pad and break control. This is the tricky part. These flags
760 * are documented in term_flushln() in term.c. Note that we're
761 * going to unset all of these flags in termp_it_post() when we
762 * exit.
763 */
764
765 switch (type) {
766 case LIST_enum:
767 case LIST_bullet:
768 case LIST_dash:
769 case LIST_hyphen:
770 /*
771 * Weird special case.
772 * Some very narrow lists actually hang.
773 */
774 if (width <= (int)term_len(p, 2))
775 p->flags |= TERMP_HANG;
776 if (n->type != ROFFT_HEAD)
777 break;
778 p->flags |= TERMP_NOBREAK;
779 p->trailspace = 1;
780 break;
781 case LIST_hang:
782 if (n->type != ROFFT_HEAD)
783 break;
784
785 /*
786 * This is ugly. If `-hang' is specified and the body
787 * is a `Bl' or `Bd', then we want basically to nullify
788 * the "overstep" effect in term_flushln() and treat
789 * this as a `-ohang' list instead.
790 */
791 if (NULL != n->next &&
792 NULL != n->next->child &&
793 (MDOC_Bl == n->next->child->tok ||
794 MDOC_Bd == n->next->child->tok))
795 break;
796
797 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
798 p->trailspace = 1;
799 break;
800 case LIST_tag:
801 if (n->type != ROFFT_HEAD)
802 break;
803
804 p->flags |= TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND;
805 p->trailspace = 2;
806
807 if (NULL == n->next || NULL == n->next->child)
808 p->flags |= TERMP_DANGLE;
809 break;
810 case LIST_column:
811 if (n->type == ROFFT_HEAD)
812 break;
813
814 if (NULL == n->next) {
815 p->flags &= ~TERMP_NOBREAK;
816 p->trailspace = 0;
817 } else {
818 p->flags |= TERMP_NOBREAK;
819 p->trailspace = 1;
820 }
821
822 break;
823 case LIST_diag:
824 if (n->type != ROFFT_HEAD)
825 break;
826 p->flags |= TERMP_NOBREAK | TERMP_BRIND;
827 p->trailspace = 1;
828 break;
829 default:
830 break;
831 }
832
833 /*
834 * Margin control. Set-head-width lists have their right
835 * margins shortened. The body for these lists has the offset
836 * necessarily lengthened. Everybody gets the offset.
837 */
838
839 p->offset += offset;
840
841 switch (type) {
842 case LIST_hang:
843 /*
844 * Same stipulation as above, regarding `-hang'. We
845 * don't want to recalculate rmargin and offsets when
846 * using `Bd' or `Bl' within `-hang' overstep lists.
847 */
848 if (n->type == ROFFT_HEAD &&
849 NULL != n->next &&
850 NULL != n->next->child &&
851 (MDOC_Bl == n->next->child->tok ||
852 MDOC_Bd == n->next->child->tok))
853 break;
854 /* FALLTHROUGH */
855 case LIST_bullet:
856 case LIST_dash:
857 case LIST_enum:
858 case LIST_hyphen:
859 case LIST_tag:
860 if (n->type == ROFFT_HEAD)
861 p->rmargin = p->offset + width;
862 else
863 p->offset += width;
864 break;
865 case LIST_column:
866 assert(width);
867 p->rmargin = p->offset + width;
868 /*
869 * XXX - this behaviour is not documented: the
870 * right-most column is filled to the right margin.
871 */
872 if (n->type == ROFFT_HEAD)
873 break;
874 if (NULL == n->next && p->rmargin < p->maxrmargin)
875 p->rmargin = p->maxrmargin;
876 break;
877 default:
878 break;
879 }
880
881 /*
882 * The dash, hyphen, bullet and enum lists all have a special
883 * HEAD character (temporarily bold, in some cases).
884 */
885
886 if (n->type == ROFFT_HEAD)
887 switch (type) {
888 case LIST_bullet:
889 term_fontpush(p, TERMFONT_BOLD);
890 term_word(p, "\\[bu]");
891 term_fontpop(p);
892 break;
893 case LIST_dash:
894 case LIST_hyphen:
895 term_fontpush(p, TERMFONT_BOLD);
896 term_word(p, "-");
897 term_fontpop(p);
898 break;
899 case LIST_enum:
900 (pair->ppair->ppair->count)++;
901 (void)snprintf(buf, sizeof(buf), "%d.",
902 pair->ppair->ppair->count);
903 term_word(p, buf);
904 break;
905 default:
906 break;
907 }
908
909 /*
910 * If we're not going to process our children, indicate so here.
911 */
912
913 switch (type) {
914 case LIST_bullet:
915 case LIST_item:
916 case LIST_dash:
917 case LIST_hyphen:
918 case LIST_enum:
919 if (n->type == ROFFT_HEAD)
920 return 0;
921 break;
922 case LIST_column:
923 if (n->type == ROFFT_HEAD)
924 return 0;
925 break;
926 default:
927 break;
928 }
929
930 return 1;
931 }
932
933 static void
934 termp_it_post(DECL_ARGS)
935 {
936 enum mdoc_list type;
937
938 if (n->type == ROFFT_BLOCK)
939 return;
940
941 type = n->parent->parent->parent->norm->Bl.type;
942
943 switch (type) {
944 case LIST_item:
945 case LIST_diag:
946 case LIST_inset:
947 if (n->type == ROFFT_BODY)
948 term_newln(p);
949 break;
950 case LIST_column:
951 if (n->type == ROFFT_BODY)
952 term_flushln(p);
953 break;
954 default:
955 term_newln(p);
956 break;
957 }
958
959 /*
960 * Now that our output is flushed, we can reset our tags. Since
961 * only `It' sets these flags, we're free to assume that nobody
962 * has munged them in the meanwhile.
963 */
964
965 p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND |
966 TERMP_DANGLE | TERMP_HANG);
967 p->trailspace = 0;
968 }
969
970 static int
971 termp_nm_pre(DECL_ARGS)
972 {
973 const char *cp;
974
975 if (n->type == ROFFT_BLOCK) {
976 p->flags |= TERMP_PREKEEP;
977 return 1;
978 }
979
980 if (n->type == ROFFT_BODY) {
981 if (NULL == n->child)
982 return 0;
983 p->flags |= TERMP_NOSPACE;
984 cp = NULL;
985 if (n->prev->child != NULL)
986 cp = n->prev->child->string;
987 if (cp == NULL)
988 cp = meta->name;
989 if (cp == NULL)
990 p->offset += term_len(p, 6);
991 else
992 p->offset += term_len(p, 1) + term_strlen(p, cp);
993 return 1;
994 }
995
996 if (NULL == n->child && NULL == meta->name)
997 return 0;
998
999 if (n->type == ROFFT_HEAD)
1000 synopsis_pre(p, n->parent);
1001
1002 if (n->type == ROFFT_HEAD &&
1003 NULL != n->next && NULL != n->next->child) {
1004 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK | TERMP_BRIND;
1005 p->trailspace = 1;
1006 p->rmargin = p->offset + term_len(p, 1);
1007 if (NULL == n->child) {
1008 p->rmargin += term_strlen(p, meta->name);
1009 } else if (n->child->type == ROFFT_TEXT) {
1010 p->rmargin += term_strlen(p, n->child->string);
1011 if (n->child->next)
1012 p->flags |= TERMP_HANG;
1013 } else {
1014 p->rmargin += term_len(p, 5);
1015 p->flags |= TERMP_HANG;
1016 }
1017 }
1018
1019 term_fontpush(p, TERMFONT_BOLD);
1020 if (NULL == n->child)
1021 term_word(p, meta->name);
1022 return 1;
1023 }
1024
1025 static void
1026 termp_nm_post(DECL_ARGS)
1027 {
1028
1029 if (n->type == ROFFT_BLOCK) {
1030 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1031 } else if (n->type == ROFFT_HEAD &&
1032 NULL != n->next && NULL != n->next->child) {
1033 term_flushln(p);
1034 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1035 p->trailspace = 0;
1036 } else if (n->type == ROFFT_BODY && n->child != NULL)
1037 term_flushln(p);
1038 }
1039
1040 static int
1041 termp_fl_pre(DECL_ARGS)
1042 {
1043
1044 termp_tag_pre(p, pair, meta, n);
1045 term_fontpush(p, TERMFONT_BOLD);
1046 term_word(p, "\\-");
1047
1048 if (!(n->child == NULL &&
1049 (n->next == NULL ||
1050 n->next->type == ROFFT_TEXT ||
1051 n->next->flags & NODE_LINE)))
1052 p->flags |= TERMP_NOSPACE;
1053
1054 return 1;
1055 }
1056
1057 static int
1058 termp__a_pre(DECL_ARGS)
1059 {
1060
1061 if (n->prev && MDOC__A == n->prev->tok)
1062 if (NULL == n->next || MDOC__A != n->next->tok)
1063 term_word(p, "and");
1064
1065 return 1;
1066 }
1067
1068 static int
1069 termp_an_pre(DECL_ARGS)
1070 {
1071
1072 if (n->norm->An.auth == AUTH_split) {
1073 p->flags &= ~TERMP_NOSPLIT;
1074 p->flags |= TERMP_SPLIT;
1075 return 0;
1076 }
1077 if (n->norm->An.auth == AUTH_nosplit) {
1078 p->flags &= ~TERMP_SPLIT;
1079 p->flags |= TERMP_NOSPLIT;
1080 return 0;
1081 }
1082
1083 if (p->flags & TERMP_SPLIT)
1084 term_newln(p);
1085
1086 if (n->sec == SEC_AUTHORS && ! (p->flags & TERMP_NOSPLIT))
1087 p->flags |= TERMP_SPLIT;
1088
1089 return 1;
1090 }
1091
1092 static int
1093 termp_ns_pre(DECL_ARGS)
1094 {
1095
1096 if ( ! (NODE_LINE & n->flags))
1097 p->flags |= TERMP_NOSPACE;
1098 return 1;
1099 }
1100
1101 static int
1102 termp_rs_pre(DECL_ARGS)
1103 {
1104
1105 if (SEC_SEE_ALSO != n->sec)
1106 return 1;
1107 if (n->type == ROFFT_BLOCK && n->prev != NULL)
1108 term_vspace(p);
1109 return 1;
1110 }
1111
1112 static int
1113 termp_ex_pre(DECL_ARGS)
1114 {
1115 term_newln(p);
1116 return 1;
1117 }
1118
1119 static int
1120 termp_nd_pre(DECL_ARGS)
1121 {
1122
1123 if (n->type == ROFFT_BODY)
1124 term_word(p, "\\(en");
1125 return 1;
1126 }
1127
1128 static int
1129 termp_bl_pre(DECL_ARGS)
1130 {
1131
1132 return n->type != ROFFT_HEAD;
1133 }
1134
1135 static void
1136 termp_bl_post(DECL_ARGS)
1137 {
1138
1139 if (n->type == ROFFT_BLOCK)
1140 term_newln(p);
1141 }
1142
1143 static int
1144 termp_xr_pre(DECL_ARGS)
1145 {
1146
1147 if (NULL == (n = n->child))
1148 return 0;
1149
1150 assert(n->type == ROFFT_TEXT);
1151 term_word(p, n->string);
1152
1153 if (NULL == (n = n->next))
1154 return 0;
1155
1156 p->flags |= TERMP_NOSPACE;
1157 term_word(p, "(");
1158 p->flags |= TERMP_NOSPACE;
1159
1160 assert(n->type == ROFFT_TEXT);
1161 term_word(p, n->string);
1162
1163 p->flags |= TERMP_NOSPACE;
1164 term_word(p, ")");
1165
1166 return 0;
1167 }
1168
1169 /*
1170 * This decides how to assert whitespace before any of the SYNOPSIS set
1171 * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
1172 * macro combos).
1173 */
1174 static void
1175 synopsis_pre(struct termp *p, const struct roff_node *n)
1176 {
1177 /*
1178 * Obviously, if we're not in a SYNOPSIS or no prior macros
1179 * exist, do nothing.
1180 */
1181 if (NULL == n->prev || ! (NODE_SYNPRETTY & n->flags))
1182 return;
1183
1184 /*
1185 * If we're the second in a pair of like elements, emit our
1186 * newline and return. UNLESS we're `Fo', `Fn', `Fn', in which
1187 * case we soldier on.
1188 */
1189 if (n->prev->tok == n->tok &&
1190 MDOC_Ft != n->tok &&
1191 MDOC_Fo != n->tok &&
1192 MDOC_Fn != n->tok) {
1193 term_newln(p);
1194 return;
1195 }
1196
1197 /*
1198 * If we're one of the SYNOPSIS set and non-like pair-wise after
1199 * another (or Fn/Fo, which we've let slip through) then assert
1200 * vertical space, else only newline and move on.
1201 */
1202 switch (n->prev->tok) {
1203 case MDOC_Fd:
1204 case MDOC_Fn:
1205 case MDOC_Fo:
1206 case MDOC_In:
1207 case MDOC_Vt:
1208 term_vspace(p);
1209 break;
1210 case MDOC_Ft:
1211 if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
1212 term_vspace(p);
1213 break;
1214 }
1215 /* FALLTHROUGH */
1216 default:
1217 term_newln(p);
1218 break;
1219 }
1220 }
1221
1222 static int
1223 termp_vt_pre(DECL_ARGS)
1224 {
1225
1226 if (n->type == ROFFT_ELEM) {
1227 synopsis_pre(p, n);
1228 return termp_under_pre(p, pair, meta, n);
1229 } else if (n->type == ROFFT_BLOCK) {
1230 synopsis_pre(p, n);
1231 return 1;
1232 } else if (n->type == ROFFT_HEAD)
1233 return 0;
1234
1235 return termp_under_pre(p, pair, meta, n);
1236 }
1237
1238 static int
1239 termp_bold_pre(DECL_ARGS)
1240 {
1241
1242 termp_tag_pre(p, pair, meta, n);
1243 term_fontpush(p, TERMFONT_BOLD);
1244 return 1;
1245 }
1246
1247 static int
1248 termp_fd_pre(DECL_ARGS)
1249 {
1250
1251 synopsis_pre(p, n);
1252 return termp_bold_pre(p, pair, meta, n);
1253 }
1254
1255 static void
1256 termp_fd_post(DECL_ARGS)
1257 {
1258
1259 term_newln(p);
1260 }
1261
1262 static int
1263 termp_sh_pre(DECL_ARGS)
1264 {
1265
1266 switch (n->type) {
1267 case ROFFT_BLOCK:
1268 /*
1269 * Vertical space before sections, except
1270 * when the previous section was empty.
1271 */
1272 if (n->prev == NULL ||
1273 n->prev->tok != MDOC_Sh ||
1274 (n->prev->body != NULL &&
1275 n->prev->body->child != NULL))
1276 term_vspace(p);
1277 break;
1278 case ROFFT_HEAD:
1279 term_fontpush(p, TERMFONT_BOLD);
1280 break;
1281 case ROFFT_BODY:
1282 p->offset = term_len(p, p->defindent);
1283 switch (n->sec) {
1284 case SEC_DESCRIPTION:
1285 fn_prio = 0;
1286 break;
1287 case SEC_AUTHORS:
1288 p->flags &= ~(TERMP_SPLIT|TERMP_NOSPLIT);
1289 break;
1290 default:
1291 break;
1292 }
1293 break;
1294 default:
1295 break;
1296 }
1297 return 1;
1298 }
1299
1300 static void
1301 termp_sh_post(DECL_ARGS)
1302 {
1303
1304 switch (n->type) {
1305 case ROFFT_HEAD:
1306 term_newln(p);
1307 break;
1308 case ROFFT_BODY:
1309 term_newln(p);
1310 p->offset = 0;
1311 break;
1312 default:
1313 break;
1314 }
1315 }
1316
1317 static void
1318 termp_lb_post(DECL_ARGS)
1319 {
1320
1321 if (SEC_LIBRARY == n->sec && NODE_LINE & n->flags)
1322 term_newln(p);
1323 }
1324
1325 static int
1326 termp_d1_pre(DECL_ARGS)
1327 {
1328
1329 if (n->type != ROFFT_BLOCK)
1330 return 1;
1331 term_newln(p);
1332 p->offset += term_len(p, p->defindent + 1);
1333 return 1;
1334 }
1335
1336 static int
1337 termp_ft_pre(DECL_ARGS)
1338 {
1339
1340 /* NB: NODE_LINE does not effect this! */
1341 synopsis_pre(p, n);
1342 term_fontpush(p, TERMFONT_UNDER);
1343 return 1;
1344 }
1345
1346 static int
1347 termp_fn_pre(DECL_ARGS)
1348 {
1349 size_t rmargin = 0;
1350 int pretty;
1351
1352 pretty = NODE_SYNPRETTY & n->flags;
1353
1354 synopsis_pre(p, n);
1355
1356 if (NULL == (n = n->child))
1357 return 0;
1358
1359 if (pretty) {
1360 rmargin = p->rmargin;
1361 p->rmargin = p->offset + term_len(p, 4);
1362 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
1363 }
1364
1365 assert(n->type == ROFFT_TEXT);
1366 term_fontpush(p, TERMFONT_BOLD);
1367 term_word(p, n->string);
1368 term_fontpop(p);
1369
1370 if (n->sec == SEC_DESCRIPTION || n->sec == SEC_CUSTOM)
1371 tag_put(n->string, ++fn_prio, p->line);
1372
1373 if (pretty) {
1374 term_flushln(p);
1375 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1376 p->offset = p->rmargin;
1377 p->rmargin = rmargin;
1378 }
1379
1380 p->flags |= TERMP_NOSPACE;
1381 term_word(p, "(");
1382 p->flags |= TERMP_NOSPACE;
1383
1384 for (n = n->next; n; n = n->next) {
1385 assert(n->type == ROFFT_TEXT);
1386 term_fontpush(p, TERMFONT_UNDER);
1387 if (pretty)
1388 p->flags |= TERMP_NBRWORD;
1389 term_word(p, n->string);
1390 term_fontpop(p);
1391
1392 if (n->next) {
1393 p->flags |= TERMP_NOSPACE;
1394 term_word(p, ",");
1395 }
1396 }
1397
1398 p->flags |= TERMP_NOSPACE;
1399 term_word(p, ")");
1400
1401 if (pretty) {
1402 p->flags |= TERMP_NOSPACE;
1403 term_word(p, ";");
1404 term_flushln(p);
1405 }
1406
1407 return 0;
1408 }
1409
1410 static int
1411 termp_fa_pre(DECL_ARGS)
1412 {
1413 const struct roff_node *nn;
1414
1415 if (n->parent->tok != MDOC_Fo) {
1416 term_fontpush(p, TERMFONT_UNDER);
1417 return 1;
1418 }
1419
1420 for (nn = n->child; nn; nn = nn->next) {
1421 term_fontpush(p, TERMFONT_UNDER);
1422 p->flags |= TERMP_NBRWORD;
1423 term_word(p, nn->string);
1424 term_fontpop(p);
1425
1426 if (nn->next || (n->next && n->next->tok == MDOC_Fa)) {
1427 p->flags |= TERMP_NOSPACE;
1428 term_word(p, ",");
1429 }
1430 }
1431
1432 return 0;
1433 }
1434
1435 static int
1436 termp_bd_pre(DECL_ARGS)
1437 {
1438 size_t tabwidth, lm, len, rm, rmax;
1439 struct roff_node *nn;
1440 int offset;
1441
1442 if (n->type == ROFFT_BLOCK) {
1443 print_bvspace(p, n, n);
1444 return 1;
1445 } else if (n->type == ROFFT_HEAD)
1446 return 0;
1447
1448 /* Handle the -offset argument. */
1449
1450 if (n->norm->Bd.offs == NULL ||
1451 ! strcmp(n->norm->Bd.offs, "left"))
1452 /* nothing */;
1453 else if ( ! strcmp(n->norm->Bd.offs, "indent"))
1454 p->offset += term_len(p, p->defindent + 1);
1455 else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
1456 p->offset += term_len(p, (p->defindent + 1) * 2);
1457 else {
1458 offset = a2width(p, n->norm->Bd.offs);
1459 if (offset < 0 && (size_t)(-offset) > p->offset)
1460 p->offset = 0;
1461 else if (offset < SHRT_MAX)
1462 p->offset += offset;
1463 }
1464
1465 /*
1466 * If -ragged or -filled are specified, the block does nothing
1467 * but change the indentation. If -unfilled or -literal are
1468 * specified, text is printed exactly as entered in the display:
1469 * for macro lines, a newline is appended to the line. Blank
1470 * lines are allowed.
1471 */
1472
1473 if (DISP_literal != n->norm->Bd.type &&
1474 DISP_unfilled != n->norm->Bd.type &&
1475 DISP_centered != n->norm->Bd.type)
1476 return 1;
1477
1478 tabwidth = p->tabwidth;
1479 if (DISP_literal == n->norm->Bd.type)
1480 p->tabwidth = term_len(p, 8);
1481
1482 lm = p->offset;
1483 rm = p->rmargin;
1484 rmax = p->maxrmargin;
1485 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1486
1487 for (nn = n->child; nn; nn = nn->next) {
1488 if (DISP_centered == n->norm->Bd.type) {
1489 if (nn->type == ROFFT_TEXT) {
1490 len = term_strlen(p, nn->string);
1491 p->offset = len >= rm ? 0 :
1492 lm + len >= rm ? rm - len :
1493 (lm + rm - len) / 2;
1494 } else
1495 p->offset = lm;
1496 }
1497 print_mdoc_node(p, pair, meta, nn);
1498 /*
1499 * If the printed node flushes its own line, then we
1500 * needn't do it here as well. This is hacky, but the
1501 * notion of selective eoln whitespace is pretty dumb
1502 * anyway, so don't sweat it.
1503 */
1504 switch (nn->tok) {
1505 case MDOC_Sm:
1506 case MDOC_br:
1507 case MDOC_sp:
1508 case MDOC_Bl:
1509 case MDOC_D1:
1510 case MDOC_Dl:
1511 case MDOC_Lp:
1512 case MDOC_Pp:
1513 continue;
1514 default:
1515 break;
1516 }
1517 if (p->flags & TERMP_NONEWLINE ||
1518 (nn->next && ! (nn->next->flags & NODE_LINE)))
1519 continue;
1520 term_flushln(p);
1521 p->flags |= TERMP_NOSPACE;
1522 }
1523
1524 p->tabwidth = tabwidth;
1525 p->rmargin = rm;
1526 p->maxrmargin = rmax;
1527 return 0;
1528 }
1529
1530 static void
1531 termp_bd_post(DECL_ARGS)
1532 {
1533 size_t rm, rmax;
1534
1535 if (n->type != ROFFT_BODY)
1536 return;
1537
1538 rm = p->rmargin;
1539 rmax = p->maxrmargin;
1540
1541 if (DISP_literal == n->norm->Bd.type ||
1542 DISP_unfilled == n->norm->Bd.type)
1543 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1544
1545 p->flags |= TERMP_NOSPACE;
1546 term_newln(p);
1547
1548 p->rmargin = rm;
1549 p->maxrmargin = rmax;
1550 }
1551
1552 static int
1553 termp_xx_pre(DECL_ARGS)
1554 {
1555 if ((n->aux = p->flags & TERMP_PREKEEP) == 0)
1556 p->flags |= TERMP_PREKEEP;
1557 return 1;
1558 }
1559
1560 static void
1561 termp_xx_post(DECL_ARGS)
1562 {
1563 if (n->aux == 0)
1564 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1565 }
1566
1567 static void
1568 termp_pf_post(DECL_ARGS)
1569 {
1570
1571 if ( ! (n->next == NULL || n->next->flags & NODE_LINE))
1572 p->flags |= TERMP_NOSPACE;
1573 }
1574
1575 static int
1576 termp_ss_pre(DECL_ARGS)
1577 {
1578 struct roff_node *nn;
1579
1580 switch (n->type) {
1581 case ROFFT_BLOCK:
1582 term_newln(p);
1583 for (nn = n->prev; nn != NULL; nn = nn->prev)
1584 if ((nn->flags & NODE_NOPRT) == 0)
1585 break;
1586 if (nn != NULL)
1587 term_vspace(p);
1588 break;
1589 case ROFFT_HEAD:
1590 term_fontpush(p, TERMFONT_BOLD);
1591 p->offset = term_len(p, (p->defindent+1)/2);
1592 break;
1593 case ROFFT_BODY:
1594 p->offset = term_len(p, p->defindent);
1595 break;
1596 default:
1597 break;
1598 }
1599
1600 return 1;
1601 }
1602
1603 static void
1604 termp_ss_post(DECL_ARGS)
1605 {
1606
1607 if (n->type == ROFFT_HEAD || n->type == ROFFT_BODY)
1608 term_newln(p);
1609 }
1610
1611 static int
1612 termp_cd_pre(DECL_ARGS)
1613 {
1614
1615 synopsis_pre(p, n);
1616 term_fontpush(p, TERMFONT_BOLD);
1617 return 1;
1618 }
1619
1620 static int
1621 termp_in_pre(DECL_ARGS)
1622 {
1623
1624 synopsis_pre(p, n);
1625
1626 if (NODE_SYNPRETTY & n->flags && NODE_LINE & n->flags) {
1627 term_fontpush(p, TERMFONT_BOLD);
1628 term_word(p, "#include");
1629 term_word(p, "<");
1630 } else {
1631 term_word(p, "<");
1632 term_fontpush(p, TERMFONT_UNDER);
1633 }
1634
1635 p->flags |= TERMP_NOSPACE;
1636 return 1;
1637 }
1638
1639 static void
1640 termp_in_post(DECL_ARGS)
1641 {
1642
1643 if (NODE_SYNPRETTY & n->flags)
1644 term_fontpush(p, TERMFONT_BOLD);
1645
1646 p->flags |= TERMP_NOSPACE;
1647 term_word(p, ">");
1648
1649 if (NODE_SYNPRETTY & n->flags)
1650 term_fontpop(p);
1651 }
1652
1653 static int
1654 termp_sp_pre(DECL_ARGS)
1655 {
1656 struct roffsu su;
1657 int i, len;
1658
1659 switch (n->tok) {
1660 case MDOC_sp:
1661 if (n->child) {
1662 if ( ! a2roffsu(n->child->string, &su, SCALE_VS))
1663 su.scale = 1.0;
1664 len = term_vspan(p, &su);
1665 } else
1666 len = 1;
1667 break;
1668 case MDOC_br:
1669 len = 0;
1670 break;
1671 default:
1672 len = 1;
1673 fn_prio = 0;
1674 break;
1675 }
1676
1677 if (0 == len)
1678 term_newln(p);
1679 else if (len < 0)
1680 p->skipvsp -= len;
1681 else
1682 for (i = 0; i < len; i++)
1683 term_vspace(p);
1684
1685 return 0;
1686 }
1687
1688 static int
1689 termp_skip_pre(DECL_ARGS)
1690 {
1691
1692 return 0;
1693 }
1694
1695 static int
1696 termp_quote_pre(DECL_ARGS)
1697 {
1698
1699 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1700 return 1;
1701
1702 switch (n->tok) {
1703 case MDOC_Ao:
1704 case MDOC_Aq:
1705 term_word(p, n->child != NULL && n->child->next == NULL &&
1706 n->child->tok == MDOC_Mt ? "<" : "\\(la");
1707 break;
1708 case MDOC_Bro:
1709 case MDOC_Brq:
1710 term_word(p, "{");
1711 break;
1712 case MDOC_Oo:
1713 case MDOC_Op:
1714 case MDOC_Bo:
1715 case MDOC_Bq:
1716 term_word(p, "[");
1717 break;
1718 case MDOC_Do:
1719 case MDOC_Dq:
1720 term_word(p, "\\(Lq");
1721 break;
1722 case MDOC_En:
1723 if (NULL == n->norm->Es ||
1724 NULL == n->norm->Es->child)
1725 return 1;
1726 term_word(p, n->norm->Es->child->string);
1727 break;
1728 case MDOC_Po:
1729 case MDOC_Pq:
1730 term_word(p, "(");
1731 break;
1732 case MDOC__T:
1733 case MDOC_Qo:
1734 case MDOC_Qq:
1735 term_word(p, "\"");
1736 break;
1737 case MDOC_Ql:
1738 case MDOC_So:
1739 case MDOC_Sq:
1740 term_word(p, "\\(oq");
1741 break;
1742 default:
1743 abort();
1744 }
1745
1746 p->flags |= TERMP_NOSPACE;
1747 return 1;
1748 }
1749
1750 static void
1751 termp_quote_post(DECL_ARGS)
1752 {
1753
1754 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1755 return;
1756
1757 p->flags |= TERMP_NOSPACE;
1758
1759 switch (n->tok) {
1760 case MDOC_Ao:
1761 case MDOC_Aq:
1762 term_word(p, n->child != NULL && n->child->next == NULL &&
1763 n->child->tok == MDOC_Mt ? ">" : "\\(ra");
1764 break;
1765 case MDOC_Bro:
1766 case MDOC_Brq:
1767 term_word(p, "}");
1768 break;
1769 case MDOC_Oo:
1770 case MDOC_Op:
1771 case MDOC_Bo:
1772 case MDOC_Bq:
1773 term_word(p, "]");
1774 break;
1775 case MDOC_Do:
1776 case MDOC_Dq:
1777 term_word(p, "\\(Rq");
1778 break;
1779 case MDOC_En:
1780 if (n->norm->Es == NULL ||
1781 n->norm->Es->child == NULL ||
1782 n->norm->Es->child->next == NULL)
1783 p->flags &= ~TERMP_NOSPACE;
1784 else
1785 term_word(p, n->norm->Es->child->next->string);
1786 break;
1787 case MDOC_Po:
1788 case MDOC_Pq:
1789 term_word(p, ")");
1790 break;
1791 case MDOC__T:
1792 case MDOC_Qo:
1793 case MDOC_Qq:
1794 term_word(p, "\"");
1795 break;
1796 case MDOC_Ql:
1797 case MDOC_So:
1798 case MDOC_Sq:
1799 term_word(p, "\\(cq");
1800 break;
1801 default:
1802 abort();
1803 }
1804 }
1805
1806 static int
1807 termp_eo_pre(DECL_ARGS)
1808 {
1809
1810 if (n->type != ROFFT_BODY)
1811 return 1;
1812
1813 if (n->end == ENDBODY_NOT &&
1814 n->parent->head->child == NULL &&
1815 n->child != NULL &&
1816 n->child->end != ENDBODY_NOT)
1817 term_word(p, "\\&");
1818 else if (n->end != ENDBODY_NOT ? n->child != NULL :
1819 n->parent->head->child != NULL && (n->child != NULL ||
1820 (n->parent->tail != NULL && n->parent->tail->child != NULL)))
1821 p->flags |= TERMP_NOSPACE;
1822
1823 return 1;
1824 }
1825
1826 static void
1827 termp_eo_post(DECL_ARGS)
1828 {
1829 int body, tail;
1830
1831 if (n->type != ROFFT_BODY)
1832 return;
1833
1834 if (n->end != ENDBODY_NOT) {
1835 p->flags &= ~TERMP_NOSPACE;
1836 return;
1837 }
1838
1839 body = n->child != NULL || n->parent->head->child != NULL;
1840 tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
1841
1842 if (body && tail)
1843 p->flags |= TERMP_NOSPACE;
1844 else if ( ! (body || tail))
1845 term_word(p, "\\&");
1846 else if ( ! tail)
1847 p->flags &= ~TERMP_NOSPACE;
1848 }
1849
1850 static int
1851 termp_fo_pre(DECL_ARGS)
1852 {
1853 size_t rmargin = 0;
1854 int pretty;
1855
1856 pretty = NODE_SYNPRETTY & n->flags;
1857
1858 if (n->type == ROFFT_BLOCK) {
1859 synopsis_pre(p, n);
1860 return 1;
1861 } else if (n->type == ROFFT_BODY) {
1862 if (pretty) {
1863 rmargin = p->rmargin;
1864 p->rmargin = p->offset + term_len(p, 4);
1865 p->flags |= TERMP_NOBREAK | TERMP_BRIND |
1866 TERMP_HANG;
1867 }
1868 p->flags |= TERMP_NOSPACE;
1869 term_word(p, "(");
1870 p->flags |= TERMP_NOSPACE;
1871 if (pretty) {
1872 term_flushln(p);
1873 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND |
1874 TERMP_HANG);
1875 p->offset = p->rmargin;
1876 p->rmargin = rmargin;
1877 }
1878 return 1;
1879 }
1880
1881 if (NULL == n->child)
1882 return 0;
1883
1884 /* XXX: we drop non-initial arguments as per groff. */
1885
1886 assert(n->child->string);
1887 term_fontpush(p, TERMFONT_BOLD);
1888 term_word(p, n->child->string);
1889 return 0;
1890 }
1891
1892 static void
1893 termp_fo_post(DECL_ARGS)
1894 {
1895
1896 if (n->type != ROFFT_BODY)
1897 return;
1898
1899 p->flags |= TERMP_NOSPACE;
1900 term_word(p, ")");
1901
1902 if (NODE_SYNPRETTY & n->flags) {
1903 p->flags |= TERMP_NOSPACE;
1904 term_word(p, ";");
1905 term_flushln(p);
1906 }
1907 }
1908
1909 static int
1910 termp_bf_pre(DECL_ARGS)
1911 {
1912
1913 if (n->type == ROFFT_HEAD)
1914 return 0;
1915 else if (n->type != ROFFT_BODY)
1916 return 1;
1917
1918 if (FONT_Em == n->norm->Bf.font)
1919 term_fontpush(p, TERMFONT_UNDER);
1920 else if (FONT_Sy == n->norm->Bf.font)
1921 term_fontpush(p, TERMFONT_BOLD);
1922 else
1923 term_fontpush(p, TERMFONT_NONE);
1924
1925 return 1;
1926 }
1927
1928 static int
1929 termp_sm_pre(DECL_ARGS)
1930 {
1931
1932 if (NULL == n->child)
1933 p->flags ^= TERMP_NONOSPACE;
1934 else if (0 == strcmp("on", n->child->string))
1935 p->flags &= ~TERMP_NONOSPACE;
1936 else
1937 p->flags |= TERMP_NONOSPACE;
1938
1939 if (p->col && ! (TERMP_NONOSPACE & p->flags))
1940 p->flags &= ~TERMP_NOSPACE;
1941
1942 return 0;
1943 }
1944
1945 static int
1946 termp_ap_pre(DECL_ARGS)
1947 {
1948
1949 p->flags |= TERMP_NOSPACE;
1950 term_word(p, "'");
1951 p->flags |= TERMP_NOSPACE;
1952 return 1;
1953 }
1954
1955 static void
1956 termp____post(DECL_ARGS)
1957 {
1958
1959 /*
1960 * Handle lists of authors. In general, print each followed by
1961 * a comma. Don't print the comma if there are only two
1962 * authors.
1963 */
1964 if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
1965 if (NULL == n->next->next || MDOC__A != n->next->next->tok)
1966 if (NULL == n->prev || MDOC__A != n->prev->tok)
1967 return;
1968
1969 /* TODO: %U. */
1970
1971 if (NULL == n->parent || MDOC_Rs != n->parent->tok)
1972 return;
1973
1974 p->flags |= TERMP_NOSPACE;
1975 if (NULL == n->next) {
1976 term_word(p, ".");
1977 p->flags |= TERMP_SENTENCE;
1978 } else
1979 term_word(p, ",");
1980 }
1981
1982 static int
1983 termp_li_pre(DECL_ARGS)
1984 {
1985
1986 termp_tag_pre(p, pair, meta, n);
1987 term_fontpush(p, TERMFONT_NONE);
1988 return 1;
1989 }
1990
1991 static int
1992 termp_lk_pre(DECL_ARGS)
1993 {
1994 const struct roff_node *link, *descr;
1995
1996 if (NULL == (link = n->child))
1997 return 0;
1998
1999 if (NULL != (descr = link->next)) {
2000 term_fontpush(p, TERMFONT_UNDER);
2001 while (NULL != descr) {
2002 term_word(p, descr->string);
2003 descr = descr->next;
2004 }
2005 p->flags |= TERMP_NOSPACE;
2006 term_word(p, ":");
2007 term_fontpop(p);
2008 }
2009
2010 term_fontpush(p, TERMFONT_BOLD);
2011 term_word(p, link->string);
2012 term_fontpop(p);
2013
2014 return 0;
2015 }
2016
2017 static int
2018 termp_bk_pre(DECL_ARGS)
2019 {
2020
2021 switch (n->type) {
2022 case ROFFT_BLOCK:
2023 break;
2024 case ROFFT_HEAD:
2025 return 0;
2026 case ROFFT_BODY:
2027 if (n->parent->args != NULL || n->prev->child == NULL)
2028 p->flags |= TERMP_PREKEEP;
2029 break;
2030 default:
2031 abort();
2032 }
2033
2034 return 1;
2035 }
2036
2037 static void
2038 termp_bk_post(DECL_ARGS)
2039 {
2040
2041 if (n->type == ROFFT_BODY)
2042 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
2043 }
2044
2045 static void
2046 termp__t_post(DECL_ARGS)
2047 {
2048
2049 /*
2050 * If we're in an `Rs' and there's a journal present, then quote
2051 * us instead of underlining us (for disambiguation).
2052 */
2053 if (n->parent && MDOC_Rs == n->parent->tok &&
2054 n->parent->norm->Rs.quote_T)
2055 termp_quote_post(p, pair, meta, n);
2056
2057 termp____post(p, pair, meta, n);
2058 }
2059
2060 static int
2061 termp__t_pre(DECL_ARGS)
2062 {
2063
2064 /*
2065 * If we're in an `Rs' and there's a journal present, then quote
2066 * us instead of underlining us (for disambiguation).
2067 */
2068 if (n->parent && MDOC_Rs == n->parent->tok &&
2069 n->parent->norm->Rs.quote_T)
2070 return termp_quote_pre(p, pair, meta, n);
2071
2072 term_fontpush(p, TERMFONT_UNDER);
2073 return 1;
2074 }
2075
2076 static int
2077 termp_under_pre(DECL_ARGS)
2078 {
2079
2080 term_fontpush(p, TERMFONT_UNDER);
2081 return 1;
2082 }
2083
2084 static int
2085 termp_em_pre(DECL_ARGS)
2086 {
2087 if (n->child != NULL &&
2088 n->child->type == ROFFT_TEXT)
2089 tag_put(n->child->string, 0, p->line);
2090 term_fontpush(p, TERMFONT_UNDER);
2091 return 1;
2092 }
2093
2094 static int
2095 termp_sy_pre(DECL_ARGS)
2096 {
2097 if (n->child != NULL &&
2098 n->child->type == ROFFT_TEXT)
2099 tag_put(n->child->string, 0, p->line);
2100 term_fontpush(p, TERMFONT_BOLD);
2101 return 1;
2102 }
2103
2104 static int
2105 termp_er_pre(DECL_ARGS)
2106 {
2107
2108 if (n->sec == SEC_ERRORS &&
2109 (n->parent->tok == MDOC_It ||
2110 (n->parent->tok == MDOC_Bq &&
2111 n->parent->parent->parent->tok == MDOC_It)))
2112 tag_put(n->child->string, 1, p->line);
2113 return 1;
2114 }
2115
2116 static int
2117 termp_tag_pre(DECL_ARGS)
2118 {
2119
2120 if (n->child != NULL &&
2121 n->child->type == ROFFT_TEXT &&
2122 (n->prev == NULL ||
2123 (n->prev->type == ROFFT_TEXT &&
2124 strcmp(n->prev->string, "|") == 0)) &&
2125 (n->parent->tok == MDOC_It ||
2126 (n->parent->tok == MDOC_Xo &&
2127 n->parent->parent->prev == NULL &&
2128 n->parent->parent->parent->tok == MDOC_It)))
2129 tag_put(n->child->string, 1, p->line);
2130 return 1;
2131 }
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