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[mandoc.git] / mdoc_term.c
1 /* $Id: mdoc_term.c,v 1.331 2016/01/08 17:48:09 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010, 2012-2016 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
84 static int termp__a_pre(DECL_ARGS);
85 static int termp__t_pre(DECL_ARGS);
86 static int termp_an_pre(DECL_ARGS);
87 static int termp_ap_pre(DECL_ARGS);
88 static int termp_bd_pre(DECL_ARGS);
89 static int termp_bf_pre(DECL_ARGS);
90 static int termp_bk_pre(DECL_ARGS);
91 static int termp_bl_pre(DECL_ARGS);
92 static int termp_bold_pre(DECL_ARGS);
93 static int termp_bt_pre(DECL_ARGS);
94 static int termp_bx_pre(DECL_ARGS);
95 static int termp_cd_pre(DECL_ARGS);
96 static int termp_d1_pre(DECL_ARGS);
97 static int termp_eo_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_rv_pre(DECL_ARGS);
117 static int termp_sh_pre(DECL_ARGS);
118 static int termp_skip_pre(DECL_ARGS);
119 static int termp_sm_pre(DECL_ARGS);
120 static int termp_sp_pre(DECL_ARGS);
121 static int termp_ss_pre(DECL_ARGS);
122 static int termp_tag_pre(DECL_ARGS);
123 static int termp_under_pre(DECL_ARGS);
124 static int termp_ud_pre(DECL_ARGS);
125 static int termp_vt_pre(DECL_ARGS);
126 static int termp_xr_pre(DECL_ARGS);
127 static int termp_xx_pre(DECL_ARGS);
128
129 static const struct termact termacts[MDOC_MAX] = {
130 { termp_ap_pre, NULL }, /* Ap */
131 { NULL, NULL }, /* Dd */
132 { NULL, NULL }, /* Dt */
133 { NULL, NULL }, /* Os */
134 { termp_sh_pre, termp_sh_post }, /* Sh */
135 { termp_ss_pre, termp_ss_post }, /* Ss */
136 { termp_sp_pre, NULL }, /* Pp */
137 { termp_d1_pre, termp_bl_post }, /* D1 */
138 { termp_d1_pre, termp_bl_post }, /* Dl */
139 { termp_bd_pre, termp_bd_post }, /* Bd */
140 { NULL, NULL }, /* Ed */
141 { termp_bl_pre, termp_bl_post }, /* Bl */
142 { NULL, NULL }, /* El */
143 { termp_it_pre, termp_it_post }, /* It */
144 { termp_under_pre, NULL }, /* Ad */
145 { termp_an_pre, NULL }, /* An */
146 { termp_under_pre, NULL }, /* Ar */
147 { termp_cd_pre, NULL }, /* Cd */
148 { termp_bold_pre, NULL }, /* Cm */
149 { termp_li_pre, NULL }, /* Dv */
150 { termp_er_pre, NULL }, /* Er */
151 { termp_tag_pre, NULL }, /* Ev */
152 { termp_ex_pre, NULL }, /* Ex */
153 { termp_fa_pre, NULL }, /* Fa */
154 { termp_fd_pre, termp_fd_post }, /* Fd */
155 { termp_fl_pre, NULL }, /* Fl */
156 { termp_fn_pre, NULL }, /* Fn */
157 { termp_ft_pre, NULL }, /* Ft */
158 { termp_bold_pre, NULL }, /* Ic */
159 { termp_in_pre, termp_in_post }, /* In */
160 { termp_li_pre, NULL }, /* Li */
161 { termp_nd_pre, NULL }, /* Nd */
162 { termp_nm_pre, termp_nm_post }, /* Nm */
163 { termp_quote_pre, termp_quote_post }, /* Op */
164 { termp_ft_pre, NULL }, /* Ot */
165 { termp_under_pre, NULL }, /* Pa */
166 { termp_rv_pre, NULL }, /* Rv */
167 { NULL, NULL }, /* St */
168 { termp_under_pre, NULL }, /* Va */
169 { termp_vt_pre, NULL }, /* Vt */
170 { termp_xr_pre, NULL }, /* Xr */
171 { termp__a_pre, termp____post }, /* %A */
172 { termp_under_pre, termp____post }, /* %B */
173 { NULL, termp____post }, /* %D */
174 { termp_under_pre, termp____post }, /* %I */
175 { termp_under_pre, termp____post }, /* %J */
176 { NULL, termp____post }, /* %N */
177 { NULL, termp____post }, /* %O */
178 { NULL, termp____post }, /* %P */
179 { NULL, termp____post }, /* %R */
180 { termp__t_pre, termp__t_post }, /* %T */
181 { NULL, termp____post }, /* %V */
182 { NULL, NULL }, /* Ac */
183 { termp_quote_pre, termp_quote_post }, /* Ao */
184 { termp_quote_pre, termp_quote_post }, /* Aq */
185 { NULL, NULL }, /* At */
186 { NULL, NULL }, /* Bc */
187 { termp_bf_pre, NULL }, /* Bf */
188 { termp_quote_pre, termp_quote_post }, /* Bo */
189 { termp_quote_pre, termp_quote_post }, /* Bq */
190 { termp_xx_pre, NULL }, /* Bsx */
191 { termp_bx_pre, NULL }, /* Bx */
192 { termp_skip_pre, NULL }, /* Db */
193 { NULL, NULL }, /* Dc */
194 { termp_quote_pre, termp_quote_post }, /* Do */
195 { termp_quote_pre, termp_quote_post }, /* Dq */
196 { NULL, NULL }, /* Ec */ /* FIXME: no space */
197 { NULL, NULL }, /* Ef */
198 { termp_under_pre, NULL }, /* Em */
199 { termp_eo_pre, termp_eo_post }, /* Eo */
200 { termp_xx_pre, NULL }, /* Fx */
201 { termp_bold_pre, NULL }, /* Ms */
202 { termp_li_pre, NULL }, /* No */
203 { termp_ns_pre, NULL }, /* Ns */
204 { termp_xx_pre, NULL }, /* Nx */
205 { termp_xx_pre, NULL }, /* Ox */
206 { NULL, NULL }, /* Pc */
207 { NULL, termp_pf_post }, /* Pf */
208 { termp_quote_pre, termp_quote_post }, /* Po */
209 { termp_quote_pre, termp_quote_post }, /* Pq */
210 { NULL, NULL }, /* Qc */
211 { termp_quote_pre, termp_quote_post }, /* Ql */
212 { termp_quote_pre, termp_quote_post }, /* Qo */
213 { termp_quote_pre, termp_quote_post }, /* Qq */
214 { NULL, NULL }, /* Re */
215 { termp_rs_pre, NULL }, /* Rs */
216 { NULL, NULL }, /* Sc */
217 { termp_quote_pre, termp_quote_post }, /* So */
218 { termp_quote_pre, termp_quote_post }, /* Sq */
219 { termp_sm_pre, NULL }, /* Sm */
220 { termp_under_pre, NULL }, /* Sx */
221 { termp_bold_pre, NULL }, /* Sy */
222 { NULL, NULL }, /* Tn */
223 { termp_xx_pre, NULL }, /* Ux */
224 { NULL, NULL }, /* Xc */
225 { NULL, NULL }, /* Xo */
226 { termp_fo_pre, termp_fo_post }, /* Fo */
227 { NULL, NULL }, /* Fc */
228 { termp_quote_pre, termp_quote_post }, /* Oo */
229 { NULL, NULL }, /* Oc */
230 { termp_bk_pre, termp_bk_post }, /* Bk */
231 { NULL, NULL }, /* Ek */
232 { termp_bt_pre, NULL }, /* Bt */
233 { NULL, NULL }, /* Hf */
234 { termp_under_pre, NULL }, /* Fr */
235 { termp_ud_pre, NULL }, /* Ud */
236 { NULL, termp_lb_post }, /* Lb */
237 { termp_sp_pre, NULL }, /* Lp */
238 { termp_lk_pre, NULL }, /* Lk */
239 { termp_under_pre, NULL }, /* Mt */
240 { termp_quote_pre, termp_quote_post }, /* Brq */
241 { termp_quote_pre, termp_quote_post }, /* Bro */
242 { NULL, NULL }, /* Brc */
243 { NULL, termp____post }, /* %C */
244 { termp_skip_pre, NULL }, /* Es */
245 { termp_quote_pre, termp_quote_post }, /* En */
246 { termp_xx_pre, NULL }, /* Dx */
247 { NULL, termp____post }, /* %Q */
248 { termp_sp_pre, NULL }, /* br */
249 { termp_sp_pre, NULL }, /* sp */
250 { NULL, termp____post }, /* %U */
251 { NULL, NULL }, /* Ta */
252 { termp_ll_pre, NULL }, /* ll */
253 };
254
255 static int fn_prio;
256
257 void
258 terminal_mdoc(void *arg, const struct roff_man *mdoc)
259 {
260 struct roff_node *n;
261 struct termp *p;
262
263 p = (struct termp *)arg;
264 p->overstep = 0;
265 p->rmargin = p->maxrmargin = p->defrmargin;
266 p->tabwidth = term_len(p, 5);
267
268 n = mdoc->first->child;
269 if (p->synopsisonly) {
270 while (n != NULL) {
271 if (n->tok == MDOC_Sh && n->sec == SEC_SYNOPSIS) {
272 if (n->child->next->child != NULL)
273 print_mdoc_nodelist(p, NULL,
274 &mdoc->meta,
275 n->child->next->child);
276 term_newln(p);
277 break;
278 }
279 n = n->next;
280 }
281 } else {
282 if (p->defindent == 0)
283 p->defindent = 5;
284 term_begin(p, print_mdoc_head, print_mdoc_foot,
285 &mdoc->meta);
286 if (n != NULL) {
287 if (n->tok != MDOC_Sh)
288 term_vspace(p);
289 print_mdoc_nodelist(p, NULL, &mdoc->meta, n);
290 }
291 term_end(p);
292 }
293 }
294
295 static void
296 print_mdoc_nodelist(DECL_ARGS)
297 {
298
299 while (n != NULL) {
300 print_mdoc_node(p, pair, meta, n);
301 n = n->next;
302 }
303 }
304
305 static void
306 print_mdoc_node(DECL_ARGS)
307 {
308 int chld;
309 struct termpair npair;
310 size_t offset, rmargin;
311
312 chld = 1;
313 offset = p->offset;
314 rmargin = p->rmargin;
315 n->flags &= ~MDOC_ENDED;
316 n->prev_font = p->fonti;
317
318 memset(&npair, 0, sizeof(struct termpair));
319 npair.ppair = pair;
320
321 /*
322 * Keeps only work until the end of a line. If a keep was
323 * invoked in a prior line, revert it to PREKEEP.
324 */
325
326 if (p->flags & TERMP_KEEP && n->flags & MDOC_LINE) {
327 p->flags &= ~TERMP_KEEP;
328 p->flags |= TERMP_PREKEEP;
329 }
330
331 /*
332 * After the keep flags have been set up, we may now
333 * produce output. Note that some pre-handlers do so.
334 */
335
336 switch (n->type) {
337 case ROFFT_TEXT:
338 if (' ' == *n->string && MDOC_LINE & n->flags)
339 term_newln(p);
340 if (MDOC_DELIMC & n->flags)
341 p->flags |= TERMP_NOSPACE;
342 term_word(p, n->string);
343 if (MDOC_DELIMO & n->flags)
344 p->flags |= TERMP_NOSPACE;
345 break;
346 case ROFFT_EQN:
347 if ( ! (n->flags & MDOC_LINE))
348 p->flags |= TERMP_NOSPACE;
349 term_eqn(p, n->eqn);
350 if (n->next != NULL && ! (n->next->flags & MDOC_LINE))
351 p->flags |= TERMP_NOSPACE;
352 break;
353 case ROFFT_TBL:
354 if (p->tbl.cols == NULL)
355 term_newln(p);
356 term_tbl(p, n->span);
357 break;
358 default:
359 if (termacts[n->tok].pre &&
360 (n->end == ENDBODY_NOT || n->child != NULL))
361 chld = (*termacts[n->tok].pre)
362 (p, &npair, meta, n);
363 break;
364 }
365
366 if (chld && n->child)
367 print_mdoc_nodelist(p, &npair, meta, n->child);
368
369 term_fontpopq(p,
370 (ENDBODY_NOT == n->end ? n : n->body)->prev_font);
371
372 switch (n->type) {
373 case ROFFT_TEXT:
374 break;
375 case ROFFT_TBL:
376 break;
377 case ROFFT_EQN:
378 break;
379 default:
380 if ( ! termacts[n->tok].post || MDOC_ENDED & n->flags)
381 break;
382 (void)(*termacts[n->tok].post)(p, &npair, meta, n);
383
384 /*
385 * Explicit end tokens not only call the post
386 * handler, but also tell the respective block
387 * that it must not call the post handler again.
388 */
389 if (ENDBODY_NOT != n->end)
390 n->body->flags |= MDOC_ENDED;
391
392 /*
393 * End of line terminating an implicit block
394 * while an explicit block is still open.
395 * Continue the explicit block without spacing.
396 */
397 if (ENDBODY_NOSPACE == n->end)
398 p->flags |= TERMP_NOSPACE;
399 break;
400 }
401
402 if (MDOC_EOS & n->flags)
403 p->flags |= TERMP_SENTENCE;
404
405 if (MDOC_ll != n->tok) {
406 p->offset = offset;
407 p->rmargin = rmargin;
408 }
409 }
410
411 static void
412 print_mdoc_foot(struct termp *p, const struct roff_meta *meta)
413 {
414 size_t sz;
415
416 term_fontrepl(p, TERMFONT_NONE);
417
418 /*
419 * Output the footer in new-groff style, that is, three columns
420 * with the middle being the manual date and flanking columns
421 * being the operating system:
422 *
423 * SYSTEM DATE SYSTEM
424 */
425
426 term_vspace(p);
427
428 p->offset = 0;
429 sz = term_strlen(p, meta->date);
430 p->rmargin = p->maxrmargin > sz ?
431 (p->maxrmargin + term_len(p, 1) - sz) / 2 : 0;
432 p->trailspace = 1;
433 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
434
435 term_word(p, meta->os);
436 term_flushln(p);
437
438 p->offset = p->rmargin;
439 sz = term_strlen(p, meta->os);
440 p->rmargin = p->maxrmargin > sz ? p->maxrmargin - sz : 0;
441 p->flags |= TERMP_NOSPACE;
442
443 term_word(p, meta->date);
444 term_flushln(p);
445
446 p->offset = p->rmargin;
447 p->rmargin = p->maxrmargin;
448 p->trailspace = 0;
449 p->flags &= ~TERMP_NOBREAK;
450 p->flags |= TERMP_NOSPACE;
451
452 term_word(p, meta->os);
453 term_flushln(p);
454
455 p->offset = 0;
456 p->rmargin = p->maxrmargin;
457 p->flags = 0;
458 }
459
460 static void
461 print_mdoc_head(struct termp *p, const struct roff_meta *meta)
462 {
463 char *volume, *title;
464 size_t vollen, titlen;
465
466 /*
467 * The header is strange. It has three components, which are
468 * really two with the first duplicated. It goes like this:
469 *
470 * IDENTIFIER TITLE IDENTIFIER
471 *
472 * The IDENTIFIER is NAME(SECTION), which is the command-name
473 * (if given, or "unknown" if not) followed by the manual page
474 * section. These are given in `Dt'. The TITLE is a free-form
475 * string depending on the manual volume. If not specified, it
476 * switches on the manual section.
477 */
478
479 assert(meta->vol);
480 if (NULL == meta->arch)
481 volume = mandoc_strdup(meta->vol);
482 else
483 mandoc_asprintf(&volume, "%s (%s)",
484 meta->vol, meta->arch);
485 vollen = term_strlen(p, volume);
486
487 if (NULL == meta->msec)
488 title = mandoc_strdup(meta->title);
489 else
490 mandoc_asprintf(&title, "%s(%s)",
491 meta->title, meta->msec);
492 titlen = term_strlen(p, title);
493
494 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
495 p->trailspace = 1;
496 p->offset = 0;
497 p->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
498 (p->maxrmargin - vollen + term_len(p, 1)) / 2 :
499 vollen < p->maxrmargin ? p->maxrmargin - vollen : 0;
500
501 term_word(p, title);
502 term_flushln(p);
503
504 p->flags |= TERMP_NOSPACE;
505 p->offset = p->rmargin;
506 p->rmargin = p->offset + vollen + titlen < p->maxrmargin ?
507 p->maxrmargin - titlen : p->maxrmargin;
508
509 term_word(p, volume);
510 term_flushln(p);
511
512 p->flags &= ~TERMP_NOBREAK;
513 p->trailspace = 0;
514 if (p->rmargin + titlen <= p->maxrmargin) {
515 p->flags |= TERMP_NOSPACE;
516 p->offset = p->rmargin;
517 p->rmargin = p->maxrmargin;
518 term_word(p, title);
519 term_flushln(p);
520 }
521
522 p->flags &= ~TERMP_NOSPACE;
523 p->offset = 0;
524 p->rmargin = p->maxrmargin;
525 free(title);
526 free(volume);
527 }
528
529 static int
530 a2width(const struct termp *p, const char *v)
531 {
532 struct roffsu su;
533
534 if (a2roffsu(v, &su, SCALE_MAX) < 2) {
535 SCALE_HS_INIT(&su, term_strlen(p, v));
536 su.scale /= term_strlen(p, "0");
537 }
538 return term_hspan(p, &su) / 24;
539 }
540
541 /*
542 * Determine how much space to print out before block elements of `It'
543 * (and thus `Bl') and `Bd'. And then go ahead and print that space,
544 * too.
545 */
546 static void
547 print_bvspace(struct termp *p,
548 const struct roff_node *bl,
549 const struct roff_node *n)
550 {
551 const struct roff_node *nn;
552
553 assert(n);
554
555 term_newln(p);
556
557 if (MDOC_Bd == bl->tok && bl->norm->Bd.comp)
558 return;
559 if (MDOC_Bl == bl->tok && bl->norm->Bl.comp)
560 return;
561
562 /* Do not vspace directly after Ss/Sh. */
563
564 nn = n;
565 while (nn->prev == NULL) {
566 do {
567 nn = nn->parent;
568 if (nn->type == ROFFT_ROOT)
569 return;
570 } while (nn->type != ROFFT_BLOCK);
571 if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
572 return;
573 if (nn->tok == MDOC_It &&
574 nn->parent->parent->norm->Bl.type != LIST_item)
575 break;
576 }
577
578 /* A `-column' does not assert vspace within the list. */
579
580 if (MDOC_Bl == bl->tok && LIST_column == bl->norm->Bl.type)
581 if (n->prev && MDOC_It == n->prev->tok)
582 return;
583
584 /* A `-diag' without body does not vspace. */
585
586 if (MDOC_Bl == bl->tok && LIST_diag == bl->norm->Bl.type)
587 if (n->prev && MDOC_It == n->prev->tok) {
588 assert(n->prev->body);
589 if (NULL == n->prev->body->child)
590 return;
591 }
592
593 term_vspace(p);
594 }
595
596
597 static int
598 termp_ll_pre(DECL_ARGS)
599 {
600
601 term_setwidth(p, n->child != NULL ? n->child->string : NULL);
602 return 0;
603 }
604
605 static int
606 termp_it_pre(DECL_ARGS)
607 {
608 char buf[24];
609 const struct roff_node *bl, *nn;
610 size_t ncols, dcol;
611 int i, offset, width;
612 enum mdoc_list type;
613
614 if (n->type == ROFFT_BLOCK) {
615 print_bvspace(p, n->parent->parent, n);
616 return 1;
617 }
618
619 bl = n->parent->parent->parent;
620 type = bl->norm->Bl.type;
621
622 /*
623 * Defaults for specific list types.
624 */
625
626 switch (type) {
627 case LIST_bullet:
628 case LIST_dash:
629 case LIST_hyphen:
630 case LIST_enum:
631 width = term_len(p, 2);
632 break;
633 case LIST_hang:
634 width = term_len(p, 8);
635 break;
636 case LIST_column:
637 case LIST_tag:
638 width = term_len(p, 10);
639 break;
640 default:
641 width = 0;
642 break;
643 }
644 offset = 0;
645
646 /*
647 * First calculate width and offset. This is pretty easy unless
648 * we're a -column list, in which case all prior columns must
649 * be accounted for.
650 */
651
652 if (bl->norm->Bl.offs != NULL) {
653 offset = a2width(p, bl->norm->Bl.offs);
654 if (offset < 0 && (size_t)(-offset) > p->offset)
655 offset = -p->offset;
656 else if (offset > SHRT_MAX)
657 offset = 0;
658 }
659
660 switch (type) {
661 case LIST_column:
662 if (n->type == ROFFT_HEAD)
663 break;
664
665 /*
666 * Imitate groff's column handling:
667 * - For each earlier column, add its width.
668 * - For less than 5 columns, add four more blanks per
669 * column.
670 * - For exactly 5 columns, add three more blank per
671 * column.
672 * - For more than 5 columns, add only one column.
673 */
674 ncols = bl->norm->Bl.ncols;
675 dcol = ncols < 5 ? term_len(p, 4) :
676 ncols == 5 ? term_len(p, 3) : term_len(p, 1);
677
678 /*
679 * Calculate the offset by applying all prior ROFFT_BODY,
680 * so we stop at the ROFFT_HEAD (nn->prev == NULL).
681 */
682
683 for (i = 0, nn = n->prev;
684 nn->prev && i < (int)ncols;
685 nn = nn->prev, i++)
686 offset += dcol + a2width(p,
687 bl->norm->Bl.cols[i]);
688
689 /*
690 * When exceeding the declared number of columns, leave
691 * the remaining widths at 0. This will later be
692 * adjusted to the default width of 10, or, for the last
693 * column, stretched to the right margin.
694 */
695 if (i >= (int)ncols)
696 break;
697
698 /*
699 * Use the declared column widths, extended as explained
700 * in the preceding paragraph.
701 */
702 width = a2width(p, bl->norm->Bl.cols[i]) + dcol;
703 break;
704 default:
705 if (NULL == bl->norm->Bl.width)
706 break;
707
708 /*
709 * Note: buffer the width by 2, which is groff's magic
710 * number for buffering single arguments. See the above
711 * handling for column for how this changes.
712 */
713 width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
714 if (width < 0 && (size_t)(-width) > p->offset)
715 width = -p->offset;
716 else if (width > SHRT_MAX)
717 width = 0;
718 break;
719 }
720
721 /*
722 * Whitespace control. Inset bodies need an initial space,
723 * while diagonal bodies need two.
724 */
725
726 p->flags |= TERMP_NOSPACE;
727
728 switch (type) {
729 case LIST_diag:
730 if (n->type == ROFFT_BODY)
731 term_word(p, "\\ \\ ");
732 break;
733 case LIST_inset:
734 if (n->type == ROFFT_BODY && n->parent->head->child != NULL)
735 term_word(p, "\\ ");
736 break;
737 default:
738 break;
739 }
740
741 p->flags |= TERMP_NOSPACE;
742
743 switch (type) {
744 case LIST_diag:
745 if (n->type == ROFFT_HEAD)
746 term_fontpush(p, TERMFONT_BOLD);
747 break;
748 default:
749 break;
750 }
751
752 /*
753 * Pad and break control. This is the tricky part. These flags
754 * are documented in term_flushln() in term.c. Note that we're
755 * going to unset all of these flags in termp_it_post() when we
756 * exit.
757 */
758
759 switch (type) {
760 case LIST_enum:
761 case LIST_bullet:
762 case LIST_dash:
763 case LIST_hyphen:
764 /*
765 * Weird special case.
766 * Some very narrow lists actually hang.
767 */
768 if (width <= (int)term_len(p, 2))
769 p->flags |= TERMP_HANG;
770 if (n->type != ROFFT_HEAD)
771 break;
772 p->flags |= TERMP_NOBREAK;
773 p->trailspace = 1;
774 break;
775 case LIST_hang:
776 if (n->type != ROFFT_HEAD)
777 break;
778
779 /*
780 * This is ugly. If `-hang' is specified and the body
781 * is a `Bl' or `Bd', then we want basically to nullify
782 * the "overstep" effect in term_flushln() and treat
783 * this as a `-ohang' list instead.
784 */
785 if (NULL != n->next &&
786 NULL != n->next->child &&
787 (MDOC_Bl == n->next->child->tok ||
788 MDOC_Bd == n->next->child->tok))
789 break;
790
791 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
792 p->trailspace = 1;
793 break;
794 case LIST_tag:
795 if (n->type != ROFFT_HEAD)
796 break;
797
798 p->flags |= TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND;
799 p->trailspace = 2;
800
801 if (NULL == n->next || NULL == n->next->child)
802 p->flags |= TERMP_DANGLE;
803 break;
804 case LIST_column:
805 if (n->type == ROFFT_HEAD)
806 break;
807
808 if (NULL == n->next) {
809 p->flags &= ~TERMP_NOBREAK;
810 p->trailspace = 0;
811 } else {
812 p->flags |= TERMP_NOBREAK;
813 p->trailspace = 1;
814 }
815
816 break;
817 case LIST_diag:
818 if (n->type != ROFFT_HEAD)
819 break;
820 p->flags |= TERMP_NOBREAK | TERMP_BRIND;
821 p->trailspace = 1;
822 break;
823 default:
824 break;
825 }
826
827 /*
828 * Margin control. Set-head-width lists have their right
829 * margins shortened. The body for these lists has the offset
830 * necessarily lengthened. Everybody gets the offset.
831 */
832
833 p->offset += offset;
834
835 switch (type) {
836 case LIST_hang:
837 /*
838 * Same stipulation as above, regarding `-hang'. We
839 * don't want to recalculate rmargin and offsets when
840 * using `Bd' or `Bl' within `-hang' overstep lists.
841 */
842 if (n->type == ROFFT_HEAD &&
843 NULL != n->next &&
844 NULL != n->next->child &&
845 (MDOC_Bl == n->next->child->tok ||
846 MDOC_Bd == n->next->child->tok))
847 break;
848 /* FALLTHROUGH */
849 case LIST_bullet:
850 case LIST_dash:
851 case LIST_enum:
852 case LIST_hyphen:
853 case LIST_tag:
854 if (n->type == ROFFT_HEAD)
855 p->rmargin = p->offset + width;
856 else
857 p->offset += width;
858 break;
859 case LIST_column:
860 assert(width);
861 p->rmargin = p->offset + width;
862 /*
863 * XXX - this behaviour is not documented: the
864 * right-most column is filled to the right margin.
865 */
866 if (n->type == ROFFT_HEAD)
867 break;
868 if (NULL == n->next && p->rmargin < p->maxrmargin)
869 p->rmargin = p->maxrmargin;
870 break;
871 default:
872 break;
873 }
874
875 /*
876 * The dash, hyphen, bullet and enum lists all have a special
877 * HEAD character (temporarily bold, in some cases).
878 */
879
880 if (n->type == ROFFT_HEAD)
881 switch (type) {
882 case LIST_bullet:
883 term_fontpush(p, TERMFONT_BOLD);
884 term_word(p, "\\[bu]");
885 term_fontpop(p);
886 break;
887 case LIST_dash:
888 case LIST_hyphen:
889 term_fontpush(p, TERMFONT_BOLD);
890 term_word(p, "-");
891 term_fontpop(p);
892 break;
893 case LIST_enum:
894 (pair->ppair->ppair->count)++;
895 (void)snprintf(buf, sizeof(buf), "%d.",
896 pair->ppair->ppair->count);
897 term_word(p, buf);
898 break;
899 default:
900 break;
901 }
902
903 /*
904 * If we're not going to process our children, indicate so here.
905 */
906
907 switch (type) {
908 case LIST_bullet:
909 case LIST_item:
910 case LIST_dash:
911 case LIST_hyphen:
912 case LIST_enum:
913 if (n->type == ROFFT_HEAD)
914 return 0;
915 break;
916 case LIST_column:
917 if (n->type == ROFFT_HEAD)
918 return 0;
919 break;
920 default:
921 break;
922 }
923
924 return 1;
925 }
926
927 static void
928 termp_it_post(DECL_ARGS)
929 {
930 enum mdoc_list type;
931
932 if (n->type == ROFFT_BLOCK)
933 return;
934
935 type = n->parent->parent->parent->norm->Bl.type;
936
937 switch (type) {
938 case LIST_item:
939 case LIST_diag:
940 case LIST_inset:
941 if (n->type == ROFFT_BODY)
942 term_newln(p);
943 break;
944 case LIST_column:
945 if (n->type == ROFFT_BODY)
946 term_flushln(p);
947 break;
948 default:
949 term_newln(p);
950 break;
951 }
952
953 /*
954 * Now that our output is flushed, we can reset our tags. Since
955 * only `It' sets these flags, we're free to assume that nobody
956 * has munged them in the meanwhile.
957 */
958
959 p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND |
960 TERMP_DANGLE | TERMP_HANG);
961 p->trailspace = 0;
962 }
963
964 static int
965 termp_nm_pre(DECL_ARGS)
966 {
967 const char *cp;
968
969 if (n->type == ROFFT_BLOCK) {
970 p->flags |= TERMP_PREKEEP;
971 return 1;
972 }
973
974 if (n->type == ROFFT_BODY) {
975 if (NULL == n->child)
976 return 0;
977 p->flags |= TERMP_NOSPACE;
978 cp = NULL;
979 if (n->prev->child != NULL)
980 cp = n->prev->child->string;
981 if (cp == NULL)
982 cp = meta->name;
983 if (cp == NULL)
984 p->offset += term_len(p, 6);
985 else
986 p->offset += term_len(p, 1) + term_strlen(p, cp);
987 return 1;
988 }
989
990 if (NULL == n->child && NULL == meta->name)
991 return 0;
992
993 if (n->type == ROFFT_HEAD)
994 synopsis_pre(p, n->parent);
995
996 if (n->type == ROFFT_HEAD &&
997 NULL != n->next && NULL != n->next->child) {
998 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK | TERMP_BRIND;
999 p->trailspace = 1;
1000 p->rmargin = p->offset + term_len(p, 1);
1001 if (NULL == n->child) {
1002 p->rmargin += term_strlen(p, meta->name);
1003 } else if (n->child->type == ROFFT_TEXT) {
1004 p->rmargin += term_strlen(p, n->child->string);
1005 if (n->child->next)
1006 p->flags |= TERMP_HANG;
1007 } else {
1008 p->rmargin += term_len(p, 5);
1009 p->flags |= TERMP_HANG;
1010 }
1011 }
1012
1013 term_fontpush(p, TERMFONT_BOLD);
1014 if (NULL == n->child)
1015 term_word(p, meta->name);
1016 return 1;
1017 }
1018
1019 static void
1020 termp_nm_post(DECL_ARGS)
1021 {
1022
1023 if (n->type == ROFFT_BLOCK) {
1024 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1025 } else if (n->type == ROFFT_HEAD &&
1026 NULL != n->next && NULL != n->next->child) {
1027 term_flushln(p);
1028 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1029 p->trailspace = 0;
1030 } else if (n->type == ROFFT_BODY && n->child != NULL)
1031 term_flushln(p);
1032 }
1033
1034 static int
1035 termp_fl_pre(DECL_ARGS)
1036 {
1037
1038 termp_tag_pre(p, pair, meta, n);
1039 term_fontpush(p, TERMFONT_BOLD);
1040 term_word(p, "\\-");
1041
1042 if (!(n->child == NULL &&
1043 (n->next == NULL ||
1044 n->next->type == ROFFT_TEXT ||
1045 n->next->flags & MDOC_LINE)))
1046 p->flags |= TERMP_NOSPACE;
1047
1048 return 1;
1049 }
1050
1051 static int
1052 termp__a_pre(DECL_ARGS)
1053 {
1054
1055 if (n->prev && MDOC__A == n->prev->tok)
1056 if (NULL == n->next || MDOC__A != n->next->tok)
1057 term_word(p, "and");
1058
1059 return 1;
1060 }
1061
1062 static int
1063 termp_an_pre(DECL_ARGS)
1064 {
1065
1066 if (n->norm->An.auth == AUTH_split) {
1067 p->flags &= ~TERMP_NOSPLIT;
1068 p->flags |= TERMP_SPLIT;
1069 return 0;
1070 }
1071 if (n->norm->An.auth == AUTH_nosplit) {
1072 p->flags &= ~TERMP_SPLIT;
1073 p->flags |= TERMP_NOSPLIT;
1074 return 0;
1075 }
1076
1077 if (p->flags & TERMP_SPLIT)
1078 term_newln(p);
1079
1080 if (n->sec == SEC_AUTHORS && ! (p->flags & TERMP_NOSPLIT))
1081 p->flags |= TERMP_SPLIT;
1082
1083 return 1;
1084 }
1085
1086 static int
1087 termp_ns_pre(DECL_ARGS)
1088 {
1089
1090 if ( ! (MDOC_LINE & n->flags))
1091 p->flags |= TERMP_NOSPACE;
1092 return 1;
1093 }
1094
1095 static int
1096 termp_rs_pre(DECL_ARGS)
1097 {
1098
1099 if (SEC_SEE_ALSO != n->sec)
1100 return 1;
1101 if (n->type == ROFFT_BLOCK && n->prev != NULL)
1102 term_vspace(p);
1103 return 1;
1104 }
1105
1106 static int
1107 termp_rv_pre(DECL_ARGS)
1108 {
1109 struct roff_node *nch;
1110
1111 term_newln(p);
1112
1113 if (n->child != NULL) {
1114 term_word(p, "The");
1115
1116 for (nch = n->child; nch != NULL; nch = nch->next) {
1117 term_fontpush(p, TERMFONT_BOLD);
1118 term_word(p, nch->string);
1119 term_fontpop(p);
1120
1121 p->flags |= TERMP_NOSPACE;
1122 term_word(p, "()");
1123
1124 if (nch->next == NULL)
1125 continue;
1126
1127 if (nch->prev != NULL || nch->next->next != NULL) {
1128 p->flags |= TERMP_NOSPACE;
1129 term_word(p, ",");
1130 }
1131 if (nch->next->next == NULL)
1132 term_word(p, "and");
1133 }
1134
1135 if (n->child != NULL && n->child->next != NULL)
1136 term_word(p, "functions return");
1137 else
1138 term_word(p, "function returns");
1139
1140 term_word(p, "the value\\~0 if successful;");
1141 } else
1142 term_word(p, "Upon successful completion,"
1143 " the value\\~0 is returned;");
1144
1145 term_word(p, "otherwise the value\\~\\-1 is returned"
1146 " and the global variable");
1147
1148 term_fontpush(p, TERMFONT_UNDER);
1149 term_word(p, "errno");
1150 term_fontpop(p);
1151
1152 term_word(p, "is set to indicate the error.");
1153 p->flags |= TERMP_SENTENCE;
1154
1155 return 0;
1156 }
1157
1158 static int
1159 termp_ex_pre(DECL_ARGS)
1160 {
1161 struct roff_node *nch;
1162
1163 term_newln(p);
1164 term_word(p, "The");
1165
1166 for (nch = n->child; nch != NULL; nch = nch->next) {
1167 term_fontpush(p, TERMFONT_BOLD);
1168 term_word(p, nch->string);
1169 term_fontpop(p);
1170
1171 if (nch->next == NULL)
1172 continue;
1173
1174 if (nch->prev != NULL || nch->next->next != NULL) {
1175 p->flags |= TERMP_NOSPACE;
1176 term_word(p, ",");
1177 }
1178
1179 if (nch->next->next == NULL)
1180 term_word(p, "and");
1181 }
1182
1183 if (n->child != NULL && n->child->next != NULL)
1184 term_word(p, "utilities exit\\~0");
1185 else
1186 term_word(p, "utility exits\\~0");
1187
1188 term_word(p, "on success, and\\~>0 if an error occurs.");
1189
1190 p->flags |= TERMP_SENTENCE;
1191 return 0;
1192 }
1193
1194 static int
1195 termp_nd_pre(DECL_ARGS)
1196 {
1197
1198 if (n->type == ROFFT_BODY)
1199 term_word(p, "\\(en");
1200 return 1;
1201 }
1202
1203 static int
1204 termp_bl_pre(DECL_ARGS)
1205 {
1206
1207 return n->type != ROFFT_HEAD;
1208 }
1209
1210 static void
1211 termp_bl_post(DECL_ARGS)
1212 {
1213
1214 if (n->type == ROFFT_BLOCK)
1215 term_newln(p);
1216 }
1217
1218 static int
1219 termp_xr_pre(DECL_ARGS)
1220 {
1221
1222 if (NULL == (n = n->child))
1223 return 0;
1224
1225 assert(n->type == ROFFT_TEXT);
1226 term_word(p, n->string);
1227
1228 if (NULL == (n = n->next))
1229 return 0;
1230
1231 p->flags |= TERMP_NOSPACE;
1232 term_word(p, "(");
1233 p->flags |= TERMP_NOSPACE;
1234
1235 assert(n->type == ROFFT_TEXT);
1236 term_word(p, n->string);
1237
1238 p->flags |= TERMP_NOSPACE;
1239 term_word(p, ")");
1240
1241 return 0;
1242 }
1243
1244 /*
1245 * This decides how to assert whitespace before any of the SYNOPSIS set
1246 * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
1247 * macro combos).
1248 */
1249 static void
1250 synopsis_pre(struct termp *p, const struct roff_node *n)
1251 {
1252 /*
1253 * Obviously, if we're not in a SYNOPSIS or no prior macros
1254 * exist, do nothing.
1255 */
1256 if (NULL == n->prev || ! (MDOC_SYNPRETTY & n->flags))
1257 return;
1258
1259 /*
1260 * If we're the second in a pair of like elements, emit our
1261 * newline and return. UNLESS we're `Fo', `Fn', `Fn', in which
1262 * case we soldier on.
1263 */
1264 if (n->prev->tok == n->tok &&
1265 MDOC_Ft != n->tok &&
1266 MDOC_Fo != n->tok &&
1267 MDOC_Fn != n->tok) {
1268 term_newln(p);
1269 return;
1270 }
1271
1272 /*
1273 * If we're one of the SYNOPSIS set and non-like pair-wise after
1274 * another (or Fn/Fo, which we've let slip through) then assert
1275 * vertical space, else only newline and move on.
1276 */
1277 switch (n->prev->tok) {
1278 case MDOC_Fd:
1279 case MDOC_Fn:
1280 case MDOC_Fo:
1281 case MDOC_In:
1282 case MDOC_Vt:
1283 term_vspace(p);
1284 break;
1285 case MDOC_Ft:
1286 if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
1287 term_vspace(p);
1288 break;
1289 }
1290 /* FALLTHROUGH */
1291 default:
1292 term_newln(p);
1293 break;
1294 }
1295 }
1296
1297 static int
1298 termp_vt_pre(DECL_ARGS)
1299 {
1300
1301 if (n->type == ROFFT_ELEM) {
1302 synopsis_pre(p, n);
1303 return termp_under_pre(p, pair, meta, n);
1304 } else if (n->type == ROFFT_BLOCK) {
1305 synopsis_pre(p, n);
1306 return 1;
1307 } else if (n->type == ROFFT_HEAD)
1308 return 0;
1309
1310 return termp_under_pre(p, pair, meta, n);
1311 }
1312
1313 static int
1314 termp_bold_pre(DECL_ARGS)
1315 {
1316
1317 termp_tag_pre(p, pair, meta, n);
1318 term_fontpush(p, TERMFONT_BOLD);
1319 return 1;
1320 }
1321
1322 static int
1323 termp_fd_pre(DECL_ARGS)
1324 {
1325
1326 synopsis_pre(p, n);
1327 return termp_bold_pre(p, pair, meta, n);
1328 }
1329
1330 static void
1331 termp_fd_post(DECL_ARGS)
1332 {
1333
1334 term_newln(p);
1335 }
1336
1337 static int
1338 termp_sh_pre(DECL_ARGS)
1339 {
1340
1341 switch (n->type) {
1342 case ROFFT_BLOCK:
1343 /*
1344 * Vertical space before sections, except
1345 * when the previous section was empty.
1346 */
1347 if (n->prev == NULL ||
1348 n->prev->tok != MDOC_Sh ||
1349 (n->prev->body != NULL &&
1350 n->prev->body->child != NULL))
1351 term_vspace(p);
1352 break;
1353 case ROFFT_HEAD:
1354 term_fontpush(p, TERMFONT_BOLD);
1355 break;
1356 case ROFFT_BODY:
1357 p->offset = term_len(p, p->defindent);
1358 switch (n->sec) {
1359 case SEC_DESCRIPTION:
1360 fn_prio = 0;
1361 break;
1362 case SEC_AUTHORS:
1363 p->flags &= ~(TERMP_SPLIT|TERMP_NOSPLIT);
1364 break;
1365 default:
1366 break;
1367 }
1368 break;
1369 default:
1370 break;
1371 }
1372 return 1;
1373 }
1374
1375 static void
1376 termp_sh_post(DECL_ARGS)
1377 {
1378
1379 switch (n->type) {
1380 case ROFFT_HEAD:
1381 term_newln(p);
1382 break;
1383 case ROFFT_BODY:
1384 term_newln(p);
1385 p->offset = 0;
1386 break;
1387 default:
1388 break;
1389 }
1390 }
1391
1392 static int
1393 termp_bt_pre(DECL_ARGS)
1394 {
1395
1396 term_word(p, "is currently in beta test.");
1397 p->flags |= TERMP_SENTENCE;
1398 return 0;
1399 }
1400
1401 static void
1402 termp_lb_post(DECL_ARGS)
1403 {
1404
1405 if (SEC_LIBRARY == n->sec && MDOC_LINE & n->flags)
1406 term_newln(p);
1407 }
1408
1409 static int
1410 termp_ud_pre(DECL_ARGS)
1411 {
1412
1413 term_word(p, "currently under development.");
1414 p->flags |= TERMP_SENTENCE;
1415 return 0;
1416 }
1417
1418 static int
1419 termp_d1_pre(DECL_ARGS)
1420 {
1421
1422 if (n->type != ROFFT_BLOCK)
1423 return 1;
1424 term_newln(p);
1425 p->offset += term_len(p, p->defindent + 1);
1426 return 1;
1427 }
1428
1429 static int
1430 termp_ft_pre(DECL_ARGS)
1431 {
1432
1433 /* NB: MDOC_LINE does not effect this! */
1434 synopsis_pre(p, n);
1435 term_fontpush(p, TERMFONT_UNDER);
1436 return 1;
1437 }
1438
1439 static int
1440 termp_fn_pre(DECL_ARGS)
1441 {
1442 size_t rmargin = 0;
1443 int pretty;
1444
1445 pretty = MDOC_SYNPRETTY & n->flags;
1446
1447 synopsis_pre(p, n);
1448
1449 if (NULL == (n = n->child))
1450 return 0;
1451
1452 if (pretty) {
1453 rmargin = p->rmargin;
1454 p->rmargin = p->offset + term_len(p, 4);
1455 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
1456 }
1457
1458 assert(n->type == ROFFT_TEXT);
1459 term_fontpush(p, TERMFONT_BOLD);
1460 term_word(p, n->string);
1461 term_fontpop(p);
1462
1463 if (n->sec == SEC_DESCRIPTION)
1464 tag_put(n->string, ++fn_prio, p->line);
1465
1466 if (pretty) {
1467 term_flushln(p);
1468 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1469 p->offset = p->rmargin;
1470 p->rmargin = rmargin;
1471 }
1472
1473 p->flags |= TERMP_NOSPACE;
1474 term_word(p, "(");
1475 p->flags |= TERMP_NOSPACE;
1476
1477 for (n = n->next; n; n = n->next) {
1478 assert(n->type == ROFFT_TEXT);
1479 term_fontpush(p, TERMFONT_UNDER);
1480 if (pretty)
1481 p->flags |= TERMP_NBRWORD;
1482 term_word(p, n->string);
1483 term_fontpop(p);
1484
1485 if (n->next) {
1486 p->flags |= TERMP_NOSPACE;
1487 term_word(p, ",");
1488 }
1489 }
1490
1491 p->flags |= TERMP_NOSPACE;
1492 term_word(p, ")");
1493
1494 if (pretty) {
1495 p->flags |= TERMP_NOSPACE;
1496 term_word(p, ";");
1497 term_flushln(p);
1498 }
1499
1500 return 0;
1501 }
1502
1503 static int
1504 termp_fa_pre(DECL_ARGS)
1505 {
1506 const struct roff_node *nn;
1507
1508 if (n->parent->tok != MDOC_Fo) {
1509 term_fontpush(p, TERMFONT_UNDER);
1510 return 1;
1511 }
1512
1513 for (nn = n->child; nn; nn = nn->next) {
1514 term_fontpush(p, TERMFONT_UNDER);
1515 p->flags |= TERMP_NBRWORD;
1516 term_word(p, nn->string);
1517 term_fontpop(p);
1518
1519 if (nn->next || (n->next && n->next->tok == MDOC_Fa)) {
1520 p->flags |= TERMP_NOSPACE;
1521 term_word(p, ",");
1522 }
1523 }
1524
1525 return 0;
1526 }
1527
1528 static int
1529 termp_bd_pre(DECL_ARGS)
1530 {
1531 size_t tabwidth, lm, len, rm, rmax;
1532 struct roff_node *nn;
1533 int offset;
1534
1535 if (n->type == ROFFT_BLOCK) {
1536 print_bvspace(p, n, n);
1537 return 1;
1538 } else if (n->type == ROFFT_HEAD)
1539 return 0;
1540
1541 /* Handle the -offset argument. */
1542
1543 if (n->norm->Bd.offs == NULL ||
1544 ! strcmp(n->norm->Bd.offs, "left"))
1545 /* nothing */;
1546 else if ( ! strcmp(n->norm->Bd.offs, "indent"))
1547 p->offset += term_len(p, p->defindent + 1);
1548 else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
1549 p->offset += term_len(p, (p->defindent + 1) * 2);
1550 else {
1551 offset = a2width(p, n->norm->Bd.offs);
1552 if (offset < 0 && (size_t)(-offset) > p->offset)
1553 p->offset = 0;
1554 else if (offset < SHRT_MAX)
1555 p->offset += offset;
1556 }
1557
1558 /*
1559 * If -ragged or -filled are specified, the block does nothing
1560 * but change the indentation. If -unfilled or -literal are
1561 * specified, text is printed exactly as entered in the display:
1562 * for macro lines, a newline is appended to the line. Blank
1563 * lines are allowed.
1564 */
1565
1566 if (DISP_literal != n->norm->Bd.type &&
1567 DISP_unfilled != n->norm->Bd.type &&
1568 DISP_centered != n->norm->Bd.type)
1569 return 1;
1570
1571 tabwidth = p->tabwidth;
1572 if (DISP_literal == n->norm->Bd.type)
1573 p->tabwidth = term_len(p, 8);
1574
1575 lm = p->offset;
1576 rm = p->rmargin;
1577 rmax = p->maxrmargin;
1578 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1579
1580 for (nn = n->child; nn; nn = nn->next) {
1581 if (DISP_centered == n->norm->Bd.type) {
1582 if (nn->type == ROFFT_TEXT) {
1583 len = term_strlen(p, nn->string);
1584 p->offset = len >= rm ? 0 :
1585 lm + len >= rm ? rm - len :
1586 (lm + rm - len) / 2;
1587 } else
1588 p->offset = lm;
1589 }
1590 print_mdoc_node(p, pair, meta, nn);
1591 /*
1592 * If the printed node flushes its own line, then we
1593 * needn't do it here as well. This is hacky, but the
1594 * notion of selective eoln whitespace is pretty dumb
1595 * anyway, so don't sweat it.
1596 */
1597 switch (nn->tok) {
1598 case MDOC_Sm:
1599 case MDOC_br:
1600 case MDOC_sp:
1601 case MDOC_Bl:
1602 case MDOC_D1:
1603 case MDOC_Dl:
1604 case MDOC_Lp:
1605 case MDOC_Pp:
1606 continue;
1607 default:
1608 break;
1609 }
1610 if (p->flags & TERMP_NONEWLINE ||
1611 (nn->next && ! (nn->next->flags & MDOC_LINE)))
1612 continue;
1613 term_flushln(p);
1614 p->flags |= TERMP_NOSPACE;
1615 }
1616
1617 p->tabwidth = tabwidth;
1618 p->rmargin = rm;
1619 p->maxrmargin = rmax;
1620 return 0;
1621 }
1622
1623 static void
1624 termp_bd_post(DECL_ARGS)
1625 {
1626 size_t rm, rmax;
1627
1628 if (n->type != ROFFT_BODY)
1629 return;
1630
1631 rm = p->rmargin;
1632 rmax = p->maxrmargin;
1633
1634 if (DISP_literal == n->norm->Bd.type ||
1635 DISP_unfilled == n->norm->Bd.type)
1636 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1637
1638 p->flags |= TERMP_NOSPACE;
1639 term_newln(p);
1640
1641 p->rmargin = rm;
1642 p->maxrmargin = rmax;
1643 }
1644
1645 static int
1646 termp_bx_pre(DECL_ARGS)
1647 {
1648
1649 if (NULL != (n = n->child)) {
1650 term_word(p, n->string);
1651 p->flags |= TERMP_NOSPACE;
1652 term_word(p, "BSD");
1653 } else {
1654 term_word(p, "BSD");
1655 return 0;
1656 }
1657
1658 if (NULL != (n = n->next)) {
1659 p->flags |= TERMP_NOSPACE;
1660 term_word(p, "-");
1661 p->flags |= TERMP_NOSPACE;
1662 term_word(p, n->string);
1663 }
1664
1665 return 0;
1666 }
1667
1668 static int
1669 termp_xx_pre(DECL_ARGS)
1670 {
1671 const char *pp;
1672 int flags;
1673
1674 pp = NULL;
1675 switch (n->tok) {
1676 case MDOC_Bsx:
1677 pp = "BSD/OS";
1678 break;
1679 case MDOC_Dx:
1680 pp = "DragonFly";
1681 break;
1682 case MDOC_Fx:
1683 pp = "FreeBSD";
1684 break;
1685 case MDOC_Nx:
1686 pp = "NetBSD";
1687 break;
1688 case MDOC_Ox:
1689 pp = "OpenBSD";
1690 break;
1691 case MDOC_Ux:
1692 pp = "UNIX";
1693 break;
1694 default:
1695 abort();
1696 }
1697
1698 term_word(p, pp);
1699 if (n->child) {
1700 flags = p->flags;
1701 p->flags |= TERMP_KEEP;
1702 term_word(p, n->child->string);
1703 p->flags = flags;
1704 }
1705 return 0;
1706 }
1707
1708 static void
1709 termp_pf_post(DECL_ARGS)
1710 {
1711
1712 if ( ! (n->next == NULL || n->next->flags & MDOC_LINE))
1713 p->flags |= TERMP_NOSPACE;
1714 }
1715
1716 static int
1717 termp_ss_pre(DECL_ARGS)
1718 {
1719
1720 switch (n->type) {
1721 case ROFFT_BLOCK:
1722 term_newln(p);
1723 if (n->prev)
1724 term_vspace(p);
1725 break;
1726 case ROFFT_HEAD:
1727 term_fontpush(p, TERMFONT_BOLD);
1728 p->offset = term_len(p, (p->defindent+1)/2);
1729 break;
1730 case ROFFT_BODY:
1731 p->offset = term_len(p, p->defindent);
1732 break;
1733 default:
1734 break;
1735 }
1736
1737 return 1;
1738 }
1739
1740 static void
1741 termp_ss_post(DECL_ARGS)
1742 {
1743
1744 if (n->type == ROFFT_HEAD || n->type == ROFFT_BODY)
1745 term_newln(p);
1746 }
1747
1748 static int
1749 termp_cd_pre(DECL_ARGS)
1750 {
1751
1752 synopsis_pre(p, n);
1753 term_fontpush(p, TERMFONT_BOLD);
1754 return 1;
1755 }
1756
1757 static int
1758 termp_in_pre(DECL_ARGS)
1759 {
1760
1761 synopsis_pre(p, n);
1762
1763 if (MDOC_SYNPRETTY & n->flags && MDOC_LINE & n->flags) {
1764 term_fontpush(p, TERMFONT_BOLD);
1765 term_word(p, "#include");
1766 term_word(p, "<");
1767 } else {
1768 term_word(p, "<");
1769 term_fontpush(p, TERMFONT_UNDER);
1770 }
1771
1772 p->flags |= TERMP_NOSPACE;
1773 return 1;
1774 }
1775
1776 static void
1777 termp_in_post(DECL_ARGS)
1778 {
1779
1780 if (MDOC_SYNPRETTY & n->flags)
1781 term_fontpush(p, TERMFONT_BOLD);
1782
1783 p->flags |= TERMP_NOSPACE;
1784 term_word(p, ">");
1785
1786 if (MDOC_SYNPRETTY & n->flags)
1787 term_fontpop(p);
1788 }
1789
1790 static int
1791 termp_sp_pre(DECL_ARGS)
1792 {
1793 struct roffsu su;
1794 int i, len;
1795
1796 switch (n->tok) {
1797 case MDOC_sp:
1798 if (n->child) {
1799 if ( ! a2roffsu(n->child->string, &su, SCALE_VS))
1800 su.scale = 1.0;
1801 len = term_vspan(p, &su);
1802 } else
1803 len = 1;
1804 break;
1805 case MDOC_br:
1806 len = 0;
1807 break;
1808 default:
1809 len = 1;
1810 fn_prio = 0;
1811 break;
1812 }
1813
1814 if (0 == len)
1815 term_newln(p);
1816 else if (len < 0)
1817 p->skipvsp -= len;
1818 else
1819 for (i = 0; i < len; i++)
1820 term_vspace(p);
1821
1822 return 0;
1823 }
1824
1825 static int
1826 termp_skip_pre(DECL_ARGS)
1827 {
1828
1829 return 0;
1830 }
1831
1832 static int
1833 termp_quote_pre(DECL_ARGS)
1834 {
1835
1836 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1837 return 1;
1838
1839 switch (n->tok) {
1840 case MDOC_Ao:
1841 case MDOC_Aq:
1842 term_word(p, n->child != NULL && n->child->next == NULL &&
1843 n->child->tok == MDOC_Mt ? "<" : "\\(la");
1844 break;
1845 case MDOC_Bro:
1846 case MDOC_Brq:
1847 term_word(p, "{");
1848 break;
1849 case MDOC_Oo:
1850 case MDOC_Op:
1851 case MDOC_Bo:
1852 case MDOC_Bq:
1853 term_word(p, "[");
1854 break;
1855 case MDOC_Do:
1856 case MDOC_Dq:
1857 term_word(p, "\\(Lq");
1858 break;
1859 case MDOC_En:
1860 if (NULL == n->norm->Es ||
1861 NULL == n->norm->Es->child)
1862 return 1;
1863 term_word(p, n->norm->Es->child->string);
1864 break;
1865 case MDOC_Po:
1866 case MDOC_Pq:
1867 term_word(p, "(");
1868 break;
1869 case MDOC__T:
1870 case MDOC_Qo:
1871 case MDOC_Qq:
1872 term_word(p, "\"");
1873 break;
1874 case MDOC_Ql:
1875 case MDOC_So:
1876 case MDOC_Sq:
1877 term_word(p, "\\(oq");
1878 break;
1879 default:
1880 abort();
1881 }
1882
1883 p->flags |= TERMP_NOSPACE;
1884 return 1;
1885 }
1886
1887 static void
1888 termp_quote_post(DECL_ARGS)
1889 {
1890
1891 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1892 return;
1893
1894 p->flags |= TERMP_NOSPACE;
1895
1896 switch (n->tok) {
1897 case MDOC_Ao:
1898 case MDOC_Aq:
1899 term_word(p, n->child != NULL && n->child->next == NULL &&
1900 n->child->tok == MDOC_Mt ? ">" : "\\(ra");
1901 break;
1902 case MDOC_Bro:
1903 case MDOC_Brq:
1904 term_word(p, "}");
1905 break;
1906 case MDOC_Oo:
1907 case MDOC_Op:
1908 case MDOC_Bo:
1909 case MDOC_Bq:
1910 term_word(p, "]");
1911 break;
1912 case MDOC_Do:
1913 case MDOC_Dq:
1914 term_word(p, "\\(Rq");
1915 break;
1916 case MDOC_En:
1917 if (n->norm->Es == NULL ||
1918 n->norm->Es->child == NULL ||
1919 n->norm->Es->child->next == NULL)
1920 p->flags &= ~TERMP_NOSPACE;
1921 else
1922 term_word(p, n->norm->Es->child->next->string);
1923 break;
1924 case MDOC_Po:
1925 case MDOC_Pq:
1926 term_word(p, ")");
1927 break;
1928 case MDOC__T:
1929 case MDOC_Qo:
1930 case MDOC_Qq:
1931 term_word(p, "\"");
1932 break;
1933 case MDOC_Ql:
1934 case MDOC_So:
1935 case MDOC_Sq:
1936 term_word(p, "\\(cq");
1937 break;
1938 default:
1939 abort();
1940 }
1941 }
1942
1943 static int
1944 termp_eo_pre(DECL_ARGS)
1945 {
1946
1947 if (n->type != ROFFT_BODY)
1948 return 1;
1949
1950 if (n->end == ENDBODY_NOT &&
1951 n->parent->head->child == NULL &&
1952 n->child != NULL &&
1953 n->child->end != ENDBODY_NOT)
1954 term_word(p, "\\&");
1955 else if (n->end != ENDBODY_NOT ? n->child != NULL :
1956 n->parent->head->child != NULL && (n->child != NULL ||
1957 (n->parent->tail != NULL && n->parent->tail->child != NULL)))
1958 p->flags |= TERMP_NOSPACE;
1959
1960 return 1;
1961 }
1962
1963 static void
1964 termp_eo_post(DECL_ARGS)
1965 {
1966 int body, tail;
1967
1968 if (n->type != ROFFT_BODY)
1969 return;
1970
1971 if (n->end != ENDBODY_NOT) {
1972 p->flags &= ~TERMP_NOSPACE;
1973 return;
1974 }
1975
1976 body = n->child != NULL || n->parent->head->child != NULL;
1977 tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
1978
1979 if (body && tail)
1980 p->flags |= TERMP_NOSPACE;
1981 else if ( ! (body || tail))
1982 term_word(p, "\\&");
1983 else if ( ! tail)
1984 p->flags &= ~TERMP_NOSPACE;
1985 }
1986
1987 static int
1988 termp_fo_pre(DECL_ARGS)
1989 {
1990 size_t rmargin = 0;
1991 int pretty;
1992
1993 pretty = MDOC_SYNPRETTY & n->flags;
1994
1995 if (n->type == ROFFT_BLOCK) {
1996 synopsis_pre(p, n);
1997 return 1;
1998 } else if (n->type == ROFFT_BODY) {
1999 if (pretty) {
2000 rmargin = p->rmargin;
2001 p->rmargin = p->offset + term_len(p, 4);
2002 p->flags |= TERMP_NOBREAK | TERMP_BRIND |
2003 TERMP_HANG;
2004 }
2005 p->flags |= TERMP_NOSPACE;
2006 term_word(p, "(");
2007 p->flags |= TERMP_NOSPACE;
2008 if (pretty) {
2009 term_flushln(p);
2010 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND |
2011 TERMP_HANG);
2012 p->offset = p->rmargin;
2013 p->rmargin = rmargin;
2014 }
2015 return 1;
2016 }
2017
2018 if (NULL == n->child)
2019 return 0;
2020
2021 /* XXX: we drop non-initial arguments as per groff. */
2022
2023 assert(n->child->string);
2024 term_fontpush(p, TERMFONT_BOLD);
2025 term_word(p, n->child->string);
2026 return 0;
2027 }
2028
2029 static void
2030 termp_fo_post(DECL_ARGS)
2031 {
2032
2033 if (n->type != ROFFT_BODY)
2034 return;
2035
2036 p->flags |= TERMP_NOSPACE;
2037 term_word(p, ")");
2038
2039 if (MDOC_SYNPRETTY & n->flags) {
2040 p->flags |= TERMP_NOSPACE;
2041 term_word(p, ";");
2042 term_flushln(p);
2043 }
2044 }
2045
2046 static int
2047 termp_bf_pre(DECL_ARGS)
2048 {
2049
2050 if (n->type == ROFFT_HEAD)
2051 return 0;
2052 else if (n->type != ROFFT_BODY)
2053 return 1;
2054
2055 if (FONT_Em == n->norm->Bf.font)
2056 term_fontpush(p, TERMFONT_UNDER);
2057 else if (FONT_Sy == n->norm->Bf.font)
2058 term_fontpush(p, TERMFONT_BOLD);
2059 else
2060 term_fontpush(p, TERMFONT_NONE);
2061
2062 return 1;
2063 }
2064
2065 static int
2066 termp_sm_pre(DECL_ARGS)
2067 {
2068
2069 if (NULL == n->child)
2070 p->flags ^= TERMP_NONOSPACE;
2071 else if (0 == strcmp("on", n->child->string))
2072 p->flags &= ~TERMP_NONOSPACE;
2073 else
2074 p->flags |= TERMP_NONOSPACE;
2075
2076 if (p->col && ! (TERMP_NONOSPACE & p->flags))
2077 p->flags &= ~TERMP_NOSPACE;
2078
2079 return 0;
2080 }
2081
2082 static int
2083 termp_ap_pre(DECL_ARGS)
2084 {
2085
2086 p->flags |= TERMP_NOSPACE;
2087 term_word(p, "'");
2088 p->flags |= TERMP_NOSPACE;
2089 return 1;
2090 }
2091
2092 static void
2093 termp____post(DECL_ARGS)
2094 {
2095
2096 /*
2097 * Handle lists of authors. In general, print each followed by
2098 * a comma. Don't print the comma if there are only two
2099 * authors.
2100 */
2101 if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
2102 if (NULL == n->next->next || MDOC__A != n->next->next->tok)
2103 if (NULL == n->prev || MDOC__A != n->prev->tok)
2104 return;
2105
2106 /* TODO: %U. */
2107
2108 if (NULL == n->parent || MDOC_Rs != n->parent->tok)
2109 return;
2110
2111 p->flags |= TERMP_NOSPACE;
2112 if (NULL == n->next) {
2113 term_word(p, ".");
2114 p->flags |= TERMP_SENTENCE;
2115 } else
2116 term_word(p, ",");
2117 }
2118
2119 static int
2120 termp_li_pre(DECL_ARGS)
2121 {
2122
2123 term_fontpush(p, TERMFONT_NONE);
2124 return 1;
2125 }
2126
2127 static int
2128 termp_lk_pre(DECL_ARGS)
2129 {
2130 const struct roff_node *link, *descr;
2131
2132 if (NULL == (link = n->child))
2133 return 0;
2134
2135 if (NULL != (descr = link->next)) {
2136 term_fontpush(p, TERMFONT_UNDER);
2137 while (NULL != descr) {
2138 term_word(p, descr->string);
2139 descr = descr->next;
2140 }
2141 p->flags |= TERMP_NOSPACE;
2142 term_word(p, ":");
2143 term_fontpop(p);
2144 }
2145
2146 term_fontpush(p, TERMFONT_BOLD);
2147 term_word(p, link->string);
2148 term_fontpop(p);
2149
2150 return 0;
2151 }
2152
2153 static int
2154 termp_bk_pre(DECL_ARGS)
2155 {
2156
2157 switch (n->type) {
2158 case ROFFT_BLOCK:
2159 break;
2160 case ROFFT_HEAD:
2161 return 0;
2162 case ROFFT_BODY:
2163 if (n->parent->args != NULL || n->prev->child == NULL)
2164 p->flags |= TERMP_PREKEEP;
2165 break;
2166 default:
2167 abort();
2168 }
2169
2170 return 1;
2171 }
2172
2173 static void
2174 termp_bk_post(DECL_ARGS)
2175 {
2176
2177 if (n->type == ROFFT_BODY)
2178 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
2179 }
2180
2181 static void
2182 termp__t_post(DECL_ARGS)
2183 {
2184
2185 /*
2186 * If we're in an `Rs' and there's a journal present, then quote
2187 * us instead of underlining us (for disambiguation).
2188 */
2189 if (n->parent && MDOC_Rs == n->parent->tok &&
2190 n->parent->norm->Rs.quote_T)
2191 termp_quote_post(p, pair, meta, n);
2192
2193 termp____post(p, pair, meta, n);
2194 }
2195
2196 static int
2197 termp__t_pre(DECL_ARGS)
2198 {
2199
2200 /*
2201 * If we're in an `Rs' and there's a journal present, then quote
2202 * us instead of underlining us (for disambiguation).
2203 */
2204 if (n->parent && MDOC_Rs == n->parent->tok &&
2205 n->parent->norm->Rs.quote_T)
2206 return termp_quote_pre(p, pair, meta, n);
2207
2208 term_fontpush(p, TERMFONT_UNDER);
2209 return 1;
2210 }
2211
2212 static int
2213 termp_under_pre(DECL_ARGS)
2214 {
2215
2216 term_fontpush(p, TERMFONT_UNDER);
2217 return 1;
2218 }
2219
2220 static int
2221 termp_er_pre(DECL_ARGS)
2222 {
2223
2224 if (n->sec == SEC_ERRORS &&
2225 (n->parent->tok == MDOC_It ||
2226 (n->parent->tok == MDOC_Bq &&
2227 n->parent->parent->parent->tok == MDOC_It)))
2228 tag_put(n->child->string, 1, p->line);
2229 return 1;
2230 }
2231
2232 static int
2233 termp_tag_pre(DECL_ARGS)
2234 {
2235
2236 if (n->child != NULL &&
2237 n->child->type == ROFFT_TEXT &&
2238 n->prev == NULL &&
2239 (n->parent->tok == MDOC_It ||
2240 (n->parent->tok == MDOC_Xo &&
2241 n->parent->parent->prev == NULL &&
2242 n->parent->parent->parent->tok == MDOC_It)))
2243 tag_put(n->child->string, 1, p->line);
2244 return 1;
2245 }
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