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Move "chars" interface out of out.h and into mandoc.h. This doesn't
[mandoc.git] / mdoc_term.c
1 /* $Id: mdoc_term.c,v 1.227 2011/04/29 22:18:12 kristaps Exp $ */
2 /*
3 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
21
22 #include <sys/types.h>
23
24 #include <assert.h>
25 #include <ctype.h>
26 #include <stdint.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 #include "mandoc.h"
32 #include "out.h"
33 #include "term.h"
34 #include "mdoc.h"
35 #include "main.h"
36
37 #define INDENT 5
38 #define HALFINDENT 3
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 mdoc_meta *m, \
48 const struct mdoc_node *n
49
50 struct termact {
51 int (*pre)(DECL_ARGS);
52 void (*post)(DECL_ARGS);
53 };
54
55 static size_t a2width(const struct termp *, const char *);
56 static size_t a2height(const struct termp *, const char *);
57 static size_t a2offs(const struct termp *, const char *);
58
59 static void print_bvspace(struct termp *,
60 const struct mdoc_node *,
61 const struct mdoc_node *);
62 static void print_mdoc_node(DECL_ARGS);
63 static void print_mdoc_nodelist(DECL_ARGS);
64 static void print_mdoc_head(struct termp *, const void *);
65 static void print_mdoc_foot(struct termp *, const void *);
66 static void synopsis_pre(struct termp *,
67 const struct mdoc_node *);
68
69 static void termp____post(DECL_ARGS);
70 static void termp__t_post(DECL_ARGS);
71 static void termp_an_post(DECL_ARGS);
72 static void termp_bd_post(DECL_ARGS);
73 static void termp_bk_post(DECL_ARGS);
74 static void termp_bl_post(DECL_ARGS);
75 static void termp_d1_post(DECL_ARGS);
76 static void termp_fo_post(DECL_ARGS);
77 static void termp_in_post(DECL_ARGS);
78 static void termp_it_post(DECL_ARGS);
79 static void termp_lb_post(DECL_ARGS);
80 static void termp_nm_post(DECL_ARGS);
81 static void termp_pf_post(DECL_ARGS);
82 static void termp_quote_post(DECL_ARGS);
83 static void termp_sh_post(DECL_ARGS);
84 static void termp_ss_post(DECL_ARGS);
85
86 static int termp__a_pre(DECL_ARGS);
87 static int termp__t_pre(DECL_ARGS);
88 static int termp_an_pre(DECL_ARGS);
89 static int termp_ap_pre(DECL_ARGS);
90 static int termp_bd_pre(DECL_ARGS);
91 static int termp_bf_pre(DECL_ARGS);
92 static int termp_bk_pre(DECL_ARGS);
93 static int termp_bl_pre(DECL_ARGS);
94 static int termp_bold_pre(DECL_ARGS);
95 static int termp_bt_pre(DECL_ARGS);
96 static int termp_bx_pre(DECL_ARGS);
97 static int termp_cd_pre(DECL_ARGS);
98 static int termp_d1_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_igndelim_pre(DECL_ARGS);
107 static int termp_in_pre(DECL_ARGS);
108 static int termp_it_pre(DECL_ARGS);
109 static int termp_li_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_sm_pre(DECL_ARGS);
119 static int termp_sp_pre(DECL_ARGS);
120 static int termp_ss_pre(DECL_ARGS);
121 static int termp_under_pre(DECL_ARGS);
122 static int termp_ud_pre(DECL_ARGS);
123 static int termp_vt_pre(DECL_ARGS);
124 static int termp_xr_pre(DECL_ARGS);
125 static int termp_xx_pre(DECL_ARGS);
126
127 static const struct termact termacts[MDOC_MAX] = {
128 { termp_ap_pre, NULL }, /* Ap */
129 { NULL, NULL }, /* Dd */
130 { NULL, NULL }, /* Dt */
131 { NULL, NULL }, /* Os */
132 { termp_sh_pre, termp_sh_post }, /* Sh */
133 { termp_ss_pre, termp_ss_post }, /* Ss */
134 { termp_sp_pre, NULL }, /* Pp */
135 { termp_d1_pre, termp_d1_post }, /* D1 */
136 { termp_d1_pre, termp_d1_post }, /* Dl */
137 { termp_bd_pre, termp_bd_post }, /* Bd */
138 { NULL, NULL }, /* Ed */
139 { termp_bl_pre, termp_bl_post }, /* Bl */
140 { NULL, NULL }, /* El */
141 { termp_it_pre, termp_it_post }, /* It */
142 { termp_under_pre, NULL }, /* Ad */
143 { termp_an_pre, termp_an_post }, /* An */
144 { termp_under_pre, NULL }, /* Ar */
145 { termp_cd_pre, NULL }, /* Cd */
146 { termp_bold_pre, NULL }, /* Cm */
147 { NULL, NULL }, /* Dv */
148 { NULL, NULL }, /* Er */
149 { NULL, NULL }, /* Ev */
150 { termp_ex_pre, NULL }, /* Ex */
151 { termp_fa_pre, NULL }, /* Fa */
152 { termp_fd_pre, NULL }, /* Fd */
153 { termp_fl_pre, NULL }, /* Fl */
154 { termp_fn_pre, NULL }, /* Fn */
155 { termp_ft_pre, NULL }, /* Ft */
156 { termp_bold_pre, NULL }, /* Ic */
157 { termp_in_pre, termp_in_post }, /* In */
158 { termp_li_pre, NULL }, /* Li */
159 { termp_nd_pre, NULL }, /* Nd */
160 { termp_nm_pre, termp_nm_post }, /* Nm */
161 { termp_quote_pre, termp_quote_post }, /* Op */
162 { NULL, NULL }, /* Ot */
163 { termp_under_pre, NULL }, /* Pa */
164 { termp_rv_pre, NULL }, /* Rv */
165 { NULL, NULL }, /* St */
166 { termp_under_pre, NULL }, /* Va */
167 { termp_vt_pre, NULL }, /* Vt */
168 { termp_xr_pre, NULL }, /* Xr */
169 { termp__a_pre, termp____post }, /* %A */
170 { termp_under_pre, termp____post }, /* %B */
171 { NULL, termp____post }, /* %D */
172 { termp_under_pre, termp____post }, /* %I */
173 { termp_under_pre, termp____post }, /* %J */
174 { NULL, termp____post }, /* %N */
175 { NULL, termp____post }, /* %O */
176 { NULL, termp____post }, /* %P */
177 { NULL, termp____post }, /* %R */
178 { termp__t_pre, termp__t_post }, /* %T */
179 { NULL, termp____post }, /* %V */
180 { NULL, NULL }, /* Ac */
181 { termp_quote_pre, termp_quote_post }, /* Ao */
182 { termp_quote_pre, termp_quote_post }, /* Aq */
183 { NULL, NULL }, /* At */
184 { NULL, NULL }, /* Bc */
185 { termp_bf_pre, NULL }, /* Bf */
186 { termp_quote_pre, termp_quote_post }, /* Bo */
187 { termp_quote_pre, termp_quote_post }, /* Bq */
188 { termp_xx_pre, NULL }, /* Bsx */
189 { termp_bx_pre, NULL }, /* Bx */
190 { NULL, NULL }, /* Db */
191 { NULL, NULL }, /* Dc */
192 { termp_quote_pre, termp_quote_post }, /* Do */
193 { termp_quote_pre, termp_quote_post }, /* Dq */
194 { NULL, NULL }, /* Ec */ /* FIXME: no space */
195 { NULL, NULL }, /* Ef */
196 { termp_under_pre, NULL }, /* Em */
197 { NULL, NULL }, /* Eo */
198 { termp_xx_pre, NULL }, /* Fx */
199 { termp_bold_pre, NULL }, /* Ms */
200 { termp_igndelim_pre, NULL }, /* No */
201 { termp_ns_pre, NULL }, /* Ns */
202 { termp_xx_pre, NULL }, /* Nx */
203 { termp_xx_pre, NULL }, /* Ox */
204 { NULL, NULL }, /* Pc */
205 { termp_igndelim_pre, termp_pf_post }, /* Pf */
206 { termp_quote_pre, termp_quote_post }, /* Po */
207 { termp_quote_pre, termp_quote_post }, /* Pq */
208 { NULL, NULL }, /* Qc */
209 { termp_quote_pre, termp_quote_post }, /* Ql */
210 { termp_quote_pre, termp_quote_post }, /* Qo */
211 { termp_quote_pre, termp_quote_post }, /* Qq */
212 { NULL, NULL }, /* Re */
213 { termp_rs_pre, NULL }, /* Rs */
214 { NULL, NULL }, /* Sc */
215 { termp_quote_pre, termp_quote_post }, /* So */
216 { termp_quote_pre, termp_quote_post }, /* Sq */
217 { termp_sm_pre, NULL }, /* Sm */
218 { termp_under_pre, NULL }, /* Sx */
219 { termp_bold_pre, NULL }, /* Sy */
220 { NULL, NULL }, /* Tn */
221 { termp_xx_pre, NULL }, /* Ux */
222 { NULL, NULL }, /* Xc */
223 { NULL, NULL }, /* Xo */
224 { termp_fo_pre, termp_fo_post }, /* Fo */
225 { NULL, NULL }, /* Fc */
226 { termp_quote_pre, termp_quote_post }, /* Oo */
227 { NULL, NULL }, /* Oc */
228 { termp_bk_pre, termp_bk_post }, /* Bk */
229 { NULL, NULL }, /* Ek */
230 { termp_bt_pre, NULL }, /* Bt */
231 { NULL, NULL }, /* Hf */
232 { NULL, NULL }, /* Fr */
233 { termp_ud_pre, NULL }, /* Ud */
234 { NULL, termp_lb_post }, /* Lb */
235 { termp_sp_pre, NULL }, /* Lp */
236 { termp_lk_pre, NULL }, /* Lk */
237 { termp_under_pre, NULL }, /* Mt */
238 { termp_quote_pre, termp_quote_post }, /* Brq */
239 { termp_quote_pre, termp_quote_post }, /* Bro */
240 { NULL, NULL }, /* Brc */
241 { NULL, termp____post }, /* %C */
242 { NULL, NULL }, /* Es */ /* TODO */
243 { NULL, NULL }, /* En */ /* TODO */
244 { termp_xx_pre, NULL }, /* Dx */
245 { NULL, termp____post }, /* %Q */
246 { termp_sp_pre, NULL }, /* br */
247 { termp_sp_pre, NULL }, /* sp */
248 { termp_under_pre, termp____post }, /* %U */
249 { NULL, NULL }, /* Ta */
250 };
251
252
253 void
254 terminal_mdoc(void *arg, const struct mdoc *mdoc)
255 {
256 const struct mdoc_node *n;
257 const struct mdoc_meta *m;
258 struct termp *p;
259
260 p = (struct termp *)arg;
261
262 p->overstep = 0;
263 p->maxrmargin = p->defrmargin;
264 p->tabwidth = term_len(p, 5);
265
266 if (NULL == p->symtab)
267 switch (p->enc) {
268 case (TERMENC_ASCII):
269 p->symtab = mchars_init(MCHARS_ASCII);
270 break;
271 default:
272 abort();
273 /* NOTREACHED */
274 }
275
276 n = mdoc_node(mdoc);
277 m = mdoc_meta(mdoc);
278
279 term_begin(p, print_mdoc_head, print_mdoc_foot, m);
280
281 if (n->child)
282 print_mdoc_nodelist(p, NULL, m, n->child);
283
284 term_end(p);
285 }
286
287
288 static void
289 print_mdoc_nodelist(DECL_ARGS)
290 {
291
292 print_mdoc_node(p, pair, m, n);
293 if (n->next)
294 print_mdoc_nodelist(p, pair, m, n->next);
295 }
296
297
298 /* ARGSUSED */
299 static void
300 print_mdoc_node(DECL_ARGS)
301 {
302 int chld;
303 const void *font;
304 struct termpair npair;
305 size_t offset, rmargin;
306
307 chld = 1;
308 offset = p->offset;
309 rmargin = p->rmargin;
310 font = term_fontq(p);
311
312 memset(&npair, 0, sizeof(struct termpair));
313 npair.ppair = pair;
314
315 /*
316 * Keeps only work until the end of a line. If a keep was
317 * invoked in a prior line, revert it to PREKEEP.
318 *
319 * Also let SYNPRETTY sections behave as if they were wrapped
320 * in a `Bk' block.
321 */
322
323 if (TERMP_KEEP & p->flags || MDOC_SYNPRETTY & n->flags) {
324 if (n->prev && n->prev->line != n->line) {
325 p->flags &= ~TERMP_KEEP;
326 p->flags |= TERMP_PREKEEP;
327 } else if (NULL == n->prev) {
328 if (n->parent && n->parent->line != n->line) {
329 p->flags &= ~TERMP_KEEP;
330 p->flags |= TERMP_PREKEEP;
331 }
332 }
333 }
334
335 /*
336 * Since SYNPRETTY sections aren't "turned off" with `Ek',
337 * we have to intuit whether we should disable formatting.
338 */
339
340 if ( ! (MDOC_SYNPRETTY & n->flags) &&
341 ((n->prev && MDOC_SYNPRETTY & n->prev->flags) ||
342 (n->parent && MDOC_SYNPRETTY & n->parent->flags)))
343 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
344
345 /*
346 * After the keep flags have been set up, we may now
347 * produce output. Note that some pre-handlers do so.
348 */
349
350 switch (n->type) {
351 case (MDOC_TEXT):
352 if (' ' == *n->string && MDOC_LINE & n->flags)
353 term_newln(p);
354 if (MDOC_DELIMC & n->flags)
355 p->flags |= TERMP_NOSPACE;
356 term_word(p, n->string);
357 if (MDOC_DELIMO & n->flags)
358 p->flags |= TERMP_NOSPACE;
359 break;
360 case (MDOC_EQN):
361 term_word(p, n->eqn->data);
362 break;
363 case (MDOC_TBL):
364 term_tbl(p, n->span);
365 break;
366 default:
367 if (termacts[n->tok].pre && ENDBODY_NOT == n->end)
368 chld = (*termacts[n->tok].pre)
369 (p, &npair, m, n);
370 break;
371 }
372
373 if (chld && n->child)
374 print_mdoc_nodelist(p, &npair, m, n->child);
375
376 term_fontpopq(p, font);
377
378 switch (n->type) {
379 case (MDOC_TEXT):
380 break;
381 case (MDOC_TBL):
382 break;
383 case (MDOC_EQN):
384 break;
385 default:
386 if ( ! termacts[n->tok].post || MDOC_ENDED & n->flags)
387 break;
388 (void)(*termacts[n->tok].post)(p, &npair, m, n);
389
390 /*
391 * Explicit end tokens not only call the post
392 * handler, but also tell the respective block
393 * that it must not call the post handler again.
394 */
395 if (ENDBODY_NOT != n->end)
396 n->pending->flags |= MDOC_ENDED;
397
398 /*
399 * End of line terminating an implicit block
400 * while an explicit block is still open.
401 * Continue the explicit block without spacing.
402 */
403 if (ENDBODY_NOSPACE == n->end)
404 p->flags |= TERMP_NOSPACE;
405 break;
406 }
407
408 if (MDOC_EOS & n->flags)
409 p->flags |= TERMP_SENTENCE;
410
411 p->offset = offset;
412 p->rmargin = rmargin;
413 }
414
415
416 static void
417 print_mdoc_foot(struct termp *p, const void *arg)
418 {
419 const struct mdoc_meta *m;
420
421 m = (const struct mdoc_meta *)arg;
422
423 term_fontrepl(p, TERMFONT_NONE);
424
425 /*
426 * Output the footer in new-groff style, that is, three columns
427 * with the middle being the manual date and flanking columns
428 * being the operating system:
429 *
430 * SYSTEM DATE SYSTEM
431 */
432
433 term_vspace(p);
434
435 p->offset = 0;
436 p->rmargin = (p->maxrmargin -
437 term_strlen(p, m->date) + term_len(p, 1)) / 2;
438 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
439
440 term_word(p, m->os);
441 term_flushln(p);
442
443 p->offset = p->rmargin;
444 p->rmargin = p->maxrmargin - term_strlen(p, m->os);
445 p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
446
447 term_word(p, m->date);
448 term_flushln(p);
449
450 p->offset = p->rmargin;
451 p->rmargin = p->maxrmargin;
452 p->flags &= ~TERMP_NOBREAK;
453 p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
454
455 term_word(p, m->os);
456 term_flushln(p);
457
458 p->offset = 0;
459 p->rmargin = p->maxrmargin;
460 p->flags = 0;
461 }
462
463
464 static void
465 print_mdoc_head(struct termp *p, const void *arg)
466 {
467 char buf[BUFSIZ], title[BUFSIZ];
468 const struct mdoc_meta *m;
469
470 m = (const struct mdoc_meta *)arg;
471
472 p->rmargin = p->maxrmargin;
473 p->offset = 0;
474
475 /*
476 * The header is strange. It has three components, which are
477 * really two with the first duplicated. It goes like this:
478 *
479 * IDENTIFIER TITLE IDENTIFIER
480 *
481 * The IDENTIFIER is NAME(SECTION), which is the command-name
482 * (if given, or "unknown" if not) followed by the manual page
483 * section. These are given in `Dt'. The TITLE is a free-form
484 * string depending on the manual volume. If not specified, it
485 * switches on the manual section.
486 */
487
488 assert(m->vol);
489 strlcpy(buf, m->vol, BUFSIZ);
490
491 if (m->arch) {
492 strlcat(buf, " (", BUFSIZ);
493 strlcat(buf, m->arch, BUFSIZ);
494 strlcat(buf, ")", BUFSIZ);
495 }
496
497 snprintf(title, BUFSIZ, "%s(%s)", m->title, m->msec);
498
499 p->offset = 0;
500 p->rmargin = (p->maxrmargin -
501 term_strlen(p, buf) + term_len(p, 1)) / 2;
502 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
503
504 term_word(p, title);
505 term_flushln(p);
506
507 p->offset = p->rmargin;
508 p->rmargin = p->maxrmargin - term_strlen(p, title);
509 p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
510
511 term_word(p, buf);
512 term_flushln(p);
513
514 p->offset = p->rmargin;
515 p->rmargin = p->maxrmargin;
516 p->flags &= ~TERMP_NOBREAK;
517 p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
518
519 term_word(p, title);
520 term_flushln(p);
521
522 p->offset = 0;
523 p->rmargin = p->maxrmargin;
524 p->flags &= ~TERMP_NOSPACE;
525 }
526
527
528 static size_t
529 a2height(const struct termp *p, const char *v)
530 {
531 struct roffsu su;
532
533 assert(v);
534 if ( ! a2roffsu(v, &su, SCALE_VS))
535 SCALE_VS_INIT(&su, term_len(p, 1));
536
537 return(term_vspan(p, &su));
538 }
539
540
541 static size_t
542 a2width(const struct termp *p, const char *v)
543 {
544 struct roffsu su;
545
546 assert(v);
547 if ( ! a2roffsu(v, &su, SCALE_MAX))
548 SCALE_HS_INIT(&su, term_strlen(p, v));
549
550 return(term_hspan(p, &su));
551 }
552
553
554 static size_t
555 a2offs(const struct termp *p, const char *v)
556 {
557 struct roffsu su;
558
559 if ('\0' == *v)
560 return(0);
561 else if (0 == strcmp(v, "left"))
562 return(0);
563 else if (0 == strcmp(v, "indent"))
564 return(term_len(p, INDENT + 1));
565 else if (0 == strcmp(v, "indent-two"))
566 return(term_len(p, (INDENT + 1) * 2));
567 else if ( ! a2roffsu(v, &su, SCALE_MAX))
568 SCALE_HS_INIT(&su, term_strlen(p, v));
569
570 return(term_hspan(p, &su));
571 }
572
573
574 /*
575 * Determine how much space to print out before block elements of `It'
576 * (and thus `Bl') and `Bd'. And then go ahead and print that space,
577 * too.
578 */
579 static void
580 print_bvspace(struct termp *p,
581 const struct mdoc_node *bl,
582 const struct mdoc_node *n)
583 {
584 const struct mdoc_node *nn;
585
586 term_newln(p);
587
588 if (MDOC_Bd == bl->tok && bl->norm->Bd.comp)
589 return;
590 if (MDOC_Bl == bl->tok && bl->norm->Bl.comp)
591 return;
592
593 /* Do not vspace directly after Ss/Sh. */
594
595 for (nn = n; nn; nn = nn->parent) {
596 if (MDOC_BLOCK != nn->type)
597 continue;
598 if (MDOC_Ss == nn->tok)
599 return;
600 if (MDOC_Sh == nn->tok)
601 return;
602 if (NULL == nn->prev)
603 continue;
604 break;
605 }
606
607 /* A `-column' does not assert vspace within the list. */
608
609 if (MDOC_Bl == bl->tok && LIST_column == bl->norm->Bl.type)
610 if (n->prev && MDOC_It == n->prev->tok)
611 return;
612
613 /* A `-diag' without body does not vspace. */
614
615 if (MDOC_Bl == bl->tok && LIST_diag == bl->norm->Bl.type)
616 if (n->prev && MDOC_It == n->prev->tok) {
617 assert(n->prev->body);
618 if (NULL == n->prev->body->child)
619 return;
620 }
621
622 term_vspace(p);
623 }
624
625
626 /* ARGSUSED */
627 static int
628 termp_it_pre(DECL_ARGS)
629 {
630 const struct mdoc_node *bl, *nn;
631 char buf[7];
632 int i;
633 size_t width, offset, ncols, dcol;
634 enum mdoc_list type;
635
636 if (MDOC_BLOCK == n->type) {
637 print_bvspace(p, n->parent->parent, n);
638 return(1);
639 }
640
641 bl = n->parent->parent->parent;
642 type = bl->norm->Bl.type;
643
644 /*
645 * First calculate width and offset. This is pretty easy unless
646 * we're a -column list, in which case all prior columns must
647 * be accounted for.
648 */
649
650 width = offset = 0;
651
652 if (bl->norm->Bl.offs)
653 offset = a2offs(p, bl->norm->Bl.offs);
654
655 switch (type) {
656 case (LIST_column):
657 if (MDOC_HEAD == n->type)
658 break;
659
660 /*
661 * Imitate groff's column handling:
662 * - For each earlier column, add its width.
663 * - For less than 5 columns, add four more blanks per
664 * column.
665 * - For exactly 5 columns, add three more blank per
666 * column.
667 * - For more than 5 columns, add only one column.
668 */
669 ncols = bl->norm->Bl.ncols;
670
671 /* LINTED */
672 dcol = ncols < 5 ? term_len(p, 4) :
673 ncols == 5 ? term_len(p, 3) : term_len(p, 1);
674
675 /*
676 * Calculate the offset by applying all prior MDOC_BODY,
677 * so we stop at the MDOC_HEAD (NULL == nn->prev).
678 */
679
680 for (i = 0, nn = n->prev;
681 nn->prev && i < (int)ncols;
682 nn = nn->prev, i++)
683 offset += dcol + a2width
684 (p, bl->norm->Bl.cols[i]);
685
686 /*
687 * When exceeding the declared number of columns, leave
688 * the remaining widths at 0. This will later be
689 * adjusted to the default width of 10, or, for the last
690 * column, stretched to the right margin.
691 */
692 if (i >= (int)ncols)
693 break;
694
695 /*
696 * Use the declared column widths, extended as explained
697 * in the preceding paragraph.
698 */
699 width = a2width(p, bl->norm->Bl.cols[i]) + dcol;
700 break;
701 default:
702 if (NULL == bl->norm->Bl.width)
703 break;
704
705 /*
706 * Note: buffer the width by 2, which is groff's magic
707 * number for buffering single arguments. See the above
708 * handling for column for how this changes.
709 */
710 assert(bl->norm->Bl.width);
711 width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
712 break;
713 }
714
715 /*
716 * List-type can override the width in the case of fixed-head
717 * values (bullet, dash/hyphen, enum). Tags need a non-zero
718 * offset.
719 */
720
721 switch (type) {
722 case (LIST_bullet):
723 /* FALLTHROUGH */
724 case (LIST_dash):
725 /* FALLTHROUGH */
726 case (LIST_hyphen):
727 if (width < term_len(p, 4))
728 width = term_len(p, 4);
729 break;
730 case (LIST_enum):
731 if (width < term_len(p, 5))
732 width = term_len(p, 5);
733 break;
734 case (LIST_hang):
735 if (0 == width)
736 width = term_len(p, 8);
737 break;
738 case (LIST_column):
739 /* FALLTHROUGH */
740 case (LIST_tag):
741 if (0 == width)
742 width = term_len(p, 10);
743 break;
744 default:
745 break;
746 }
747
748 /*
749 * Whitespace control. Inset bodies need an initial space,
750 * while diagonal bodies need two.
751 */
752
753 p->flags |= TERMP_NOSPACE;
754
755 switch (type) {
756 case (LIST_diag):
757 if (MDOC_BODY == n->type)
758 term_word(p, "\\ \\ ");
759 break;
760 case (LIST_inset):
761 if (MDOC_BODY == n->type)
762 term_word(p, "\\ ");
763 break;
764 default:
765 break;
766 }
767
768 p->flags |= TERMP_NOSPACE;
769
770 switch (type) {
771 case (LIST_diag):
772 if (MDOC_HEAD == n->type)
773 term_fontpush(p, TERMFONT_BOLD);
774 break;
775 default:
776 break;
777 }
778
779 /*
780 * Pad and break control. This is the tricky part. These flags
781 * are documented in term_flushln() in term.c. Note that we're
782 * going to unset all of these flags in termp_it_post() when we
783 * exit.
784 */
785
786 switch (type) {
787 case (LIST_bullet):
788 /* FALLTHROUGH */
789 case (LIST_dash):
790 /* FALLTHROUGH */
791 case (LIST_enum):
792 /* FALLTHROUGH */
793 case (LIST_hyphen):
794 if (MDOC_HEAD == n->type)
795 p->flags |= TERMP_NOBREAK;
796 else
797 p->flags |= TERMP_NOLPAD;
798 break;
799 case (LIST_hang):
800 if (MDOC_HEAD == n->type)
801 p->flags |= TERMP_NOBREAK;
802 else
803 p->flags |= TERMP_NOLPAD;
804
805 if (MDOC_HEAD != n->type)
806 break;
807
808 /*
809 * This is ugly. If `-hang' is specified and the body
810 * is a `Bl' or `Bd', then we want basically to nullify
811 * the "overstep" effect in term_flushln() and treat
812 * this as a `-ohang' list instead.
813 */
814 if (n->next->child &&
815 (MDOC_Bl == n->next->child->tok ||
816 MDOC_Bd == n->next->child->tok)) {
817 p->flags &= ~TERMP_NOBREAK;
818 p->flags &= ~TERMP_NOLPAD;
819 } else
820 p->flags |= TERMP_HANG;
821 break;
822 case (LIST_tag):
823 if (MDOC_HEAD == n->type)
824 p->flags |= TERMP_NOBREAK | TERMP_TWOSPACE;
825 else
826 p->flags |= TERMP_NOLPAD;
827
828 if (MDOC_HEAD != n->type)
829 break;
830 if (NULL == n->next || NULL == n->next->child)
831 p->flags |= TERMP_DANGLE;
832 break;
833 case (LIST_column):
834 if (MDOC_HEAD == n->type)
835 break;
836
837 if (NULL == n->next)
838 p->flags &= ~TERMP_NOBREAK;
839 else
840 p->flags |= TERMP_NOBREAK;
841
842 assert(n->prev);
843 if (MDOC_BODY == n->prev->type)
844 p->flags |= TERMP_NOLPAD;
845
846 break;
847 case (LIST_diag):
848 if (MDOC_HEAD == n->type)
849 p->flags |= TERMP_NOBREAK;
850 break;
851 default:
852 break;
853 }
854
855 /*
856 * Margin control. Set-head-width lists have their right
857 * margins shortened. The body for these lists has the offset
858 * necessarily lengthened. Everybody gets the offset.
859 */
860
861 p->offset += offset;
862
863 switch (type) {
864 case (LIST_hang):
865 /*
866 * Same stipulation as above, regarding `-hang'. We
867 * don't want to recalculate rmargin and offsets when
868 * using `Bd' or `Bl' within `-hang' overstep lists.
869 */
870 if (MDOC_HEAD == n->type && n->next->child &&
871 (MDOC_Bl == n->next->child->tok ||
872 MDOC_Bd == n->next->child->tok))
873 break;
874 /* FALLTHROUGH */
875 case (LIST_bullet):
876 /* FALLTHROUGH */
877 case (LIST_dash):
878 /* FALLTHROUGH */
879 case (LIST_enum):
880 /* FALLTHROUGH */
881 case (LIST_hyphen):
882 /* FALLTHROUGH */
883 case (LIST_tag):
884 assert(width);
885 if (MDOC_HEAD == n->type)
886 p->rmargin = p->offset + width;
887 else
888 p->offset += width;
889 break;
890 case (LIST_column):
891 assert(width);
892 p->rmargin = p->offset + width;
893 /*
894 * XXX - this behaviour is not documented: the
895 * right-most column is filled to the right margin.
896 */
897 if (MDOC_HEAD == n->type)
898 break;
899 if (NULL == n->next && p->rmargin < p->maxrmargin)
900 p->rmargin = p->maxrmargin;
901 break;
902 default:
903 break;
904 }
905
906 /*
907 * The dash, hyphen, bullet and enum lists all have a special
908 * HEAD character (temporarily bold, in some cases).
909 */
910
911 if (MDOC_HEAD == n->type)
912 switch (type) {
913 case (LIST_bullet):
914 term_fontpush(p, TERMFONT_BOLD);
915 term_word(p, "\\[bu]");
916 term_fontpop(p);
917 break;
918 case (LIST_dash):
919 /* FALLTHROUGH */
920 case (LIST_hyphen):
921 term_fontpush(p, TERMFONT_BOLD);
922 term_word(p, "\\(hy");
923 term_fontpop(p);
924 break;
925 case (LIST_enum):
926 (pair->ppair->ppair->count)++;
927 snprintf(buf, sizeof(buf), "%d.",
928 pair->ppair->ppair->count);
929 term_word(p, buf);
930 break;
931 default:
932 break;
933 }
934
935 /*
936 * If we're not going to process our children, indicate so here.
937 */
938
939 switch (type) {
940 case (LIST_bullet):
941 /* FALLTHROUGH */
942 case (LIST_item):
943 /* FALLTHROUGH */
944 case (LIST_dash):
945 /* FALLTHROUGH */
946 case (LIST_hyphen):
947 /* FALLTHROUGH */
948 case (LIST_enum):
949 if (MDOC_HEAD == n->type)
950 return(0);
951 break;
952 case (LIST_column):
953 if (MDOC_HEAD == n->type)
954 return(0);
955 break;
956 default:
957 break;
958 }
959
960 return(1);
961 }
962
963
964 /* ARGSUSED */
965 static void
966 termp_it_post(DECL_ARGS)
967 {
968 enum mdoc_list type;
969
970 if (MDOC_BLOCK == n->type)
971 return;
972
973 type = n->parent->parent->parent->norm->Bl.type;
974
975 switch (type) {
976 case (LIST_item):
977 /* FALLTHROUGH */
978 case (LIST_diag):
979 /* FALLTHROUGH */
980 case (LIST_inset):
981 if (MDOC_BODY == n->type)
982 term_newln(p);
983 break;
984 case (LIST_column):
985 if (MDOC_BODY == n->type)
986 term_flushln(p);
987 break;
988 default:
989 term_newln(p);
990 break;
991 }
992
993 /*
994 * Now that our output is flushed, we can reset our tags. Since
995 * only `It' sets these flags, we're free to assume that nobody
996 * has munged them in the meanwhile.
997 */
998
999 p->flags &= ~TERMP_DANGLE;
1000 p->flags &= ~TERMP_NOBREAK;
1001 p->flags &= ~TERMP_TWOSPACE;
1002 p->flags &= ~TERMP_NOLPAD;
1003 p->flags &= ~TERMP_HANG;
1004 }
1005
1006
1007 /* ARGSUSED */
1008 static int
1009 termp_nm_pre(DECL_ARGS)
1010 {
1011
1012 if (MDOC_BLOCK == n->type)
1013 return(1);
1014
1015 if (MDOC_BODY == n->type) {
1016 if (NULL == n->child)
1017 return(0);
1018 p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
1019 p->offset += term_len(p, 1) +
1020 (NULL == n->prev->child ? term_strlen(p, m->name) :
1021 MDOC_TEXT == n->prev->child->type ?
1022 term_strlen(p, n->prev->child->string) :
1023 term_len(p, 5));
1024 return(1);
1025 }
1026
1027 if (NULL == n->child && NULL == m->name)
1028 return(0);
1029
1030 if (MDOC_HEAD == n->type)
1031 synopsis_pre(p, n->parent);
1032
1033 if (MDOC_HEAD == n->type && n->next->child) {
1034 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
1035 p->rmargin = p->offset + term_len(p, 1);
1036 if (NULL == n->child) {
1037 p->rmargin += term_strlen(p, m->name);
1038 } else if (MDOC_TEXT == n->child->type) {
1039 p->rmargin += term_strlen(p, n->child->string);
1040 if (n->child->next)
1041 p->flags |= TERMP_HANG;
1042 } else {
1043 p->rmargin += term_len(p, 5);
1044 p->flags |= TERMP_HANG;
1045 }
1046 }
1047
1048 term_fontpush(p, TERMFONT_BOLD);
1049 if (NULL == n->child)
1050 term_word(p, m->name);
1051 return(1);
1052 }
1053
1054
1055 /* ARGSUSED */
1056 static void
1057 termp_nm_post(DECL_ARGS)
1058 {
1059
1060 if (MDOC_HEAD == n->type && n->next->child) {
1061 term_flushln(p);
1062 p->flags &= ~(TERMP_NOBREAK | TERMP_HANG);
1063 } else if (MDOC_BODY == n->type && n->child) {
1064 term_flushln(p);
1065 p->flags &= ~TERMP_NOLPAD;
1066 }
1067 }
1068
1069
1070 /* ARGSUSED */
1071 static int
1072 termp_fl_pre(DECL_ARGS)
1073 {
1074
1075 term_fontpush(p, TERMFONT_BOLD);
1076 term_word(p, "\\-");
1077
1078 if (n->child)
1079 p->flags |= TERMP_NOSPACE;
1080 else if (n->next && n->next->line == n->line)
1081 p->flags |= TERMP_NOSPACE;
1082
1083 return(1);
1084 }
1085
1086
1087 /* ARGSUSED */
1088 static int
1089 termp__a_pre(DECL_ARGS)
1090 {
1091
1092 if (n->prev && MDOC__A == n->prev->tok)
1093 if (NULL == n->next || MDOC__A != n->next->tok)
1094 term_word(p, "and");
1095
1096 return(1);
1097 }
1098
1099
1100 /* ARGSUSED */
1101 static int
1102 termp_an_pre(DECL_ARGS)
1103 {
1104
1105 if (NULL == n->child)
1106 return(1);
1107
1108 /*
1109 * If not in the AUTHORS section, `An -split' will cause
1110 * newlines to occur before the author name. If in the AUTHORS
1111 * section, by default, the first `An' invocation is nosplit,
1112 * then all subsequent ones, regardless of whether interspersed
1113 * with other macros/text, are split. -split, in this case,
1114 * will override the condition of the implied first -nosplit.
1115 */
1116
1117 if (n->sec == SEC_AUTHORS) {
1118 if ( ! (TERMP_ANPREC & p->flags)) {
1119 if (TERMP_SPLIT & p->flags)
1120 term_newln(p);
1121 return(1);
1122 }
1123 if (TERMP_NOSPLIT & p->flags)
1124 return(1);
1125 term_newln(p);
1126 return(1);
1127 }
1128
1129 if (TERMP_SPLIT & p->flags)
1130 term_newln(p);
1131
1132 return(1);
1133 }
1134
1135
1136 /* ARGSUSED */
1137 static void
1138 termp_an_post(DECL_ARGS)
1139 {
1140
1141 if (n->child) {
1142 if (SEC_AUTHORS == n->sec)
1143 p->flags |= TERMP_ANPREC;
1144 return;
1145 }
1146
1147 if (AUTH_split == n->norm->An.auth) {
1148 p->flags &= ~TERMP_NOSPLIT;
1149 p->flags |= TERMP_SPLIT;
1150 } else if (AUTH_nosplit == n->norm->An.auth) {
1151 p->flags &= ~TERMP_SPLIT;
1152 p->flags |= TERMP_NOSPLIT;
1153 }
1154
1155 }
1156
1157
1158 /* ARGSUSED */
1159 static int
1160 termp_ns_pre(DECL_ARGS)
1161 {
1162
1163 if ( ! (MDOC_LINE & n->flags))
1164 p->flags |= TERMP_NOSPACE;
1165 return(1);
1166 }
1167
1168
1169 /* ARGSUSED */
1170 static int
1171 termp_rs_pre(DECL_ARGS)
1172 {
1173
1174 if (SEC_SEE_ALSO != n->sec)
1175 return(1);
1176 if (MDOC_BLOCK == n->type && n->prev)
1177 term_vspace(p);
1178 return(1);
1179 }
1180
1181
1182 /* ARGSUSED */
1183 static int
1184 termp_rv_pre(DECL_ARGS)
1185 {
1186 int nchild;
1187
1188 term_newln(p);
1189 term_word(p, "The");
1190
1191 nchild = n->nchild;
1192 for (n = n->child; n; n = n->next) {
1193 term_fontpush(p, TERMFONT_BOLD);
1194 term_word(p, n->string);
1195 term_fontpop(p);
1196
1197 p->flags |= TERMP_NOSPACE;
1198 term_word(p, "()");
1199
1200 if (nchild > 2 && n->next) {
1201 p->flags |= TERMP_NOSPACE;
1202 term_word(p, ",");
1203 }
1204
1205 if (n->next && NULL == n->next->next)
1206 term_word(p, "and");
1207 }
1208
1209 if (nchild > 1)
1210 term_word(p, "functions return");
1211 else
1212 term_word(p, "function returns");
1213
1214 term_word(p, "the value 0 if successful; otherwise the value "
1215 "-1 is returned and the global variable");
1216
1217 term_fontpush(p, TERMFONT_UNDER);
1218 term_word(p, "errno");
1219 term_fontpop(p);
1220
1221 term_word(p, "is set to indicate the error.");
1222 p->flags |= TERMP_SENTENCE;
1223
1224 return(0);
1225 }
1226
1227
1228 /* ARGSUSED */
1229 static int
1230 termp_ex_pre(DECL_ARGS)
1231 {
1232 int nchild;
1233
1234 term_newln(p);
1235 term_word(p, "The");
1236
1237 nchild = n->nchild;
1238 for (n = n->child; n; n = n->next) {
1239 term_fontpush(p, TERMFONT_BOLD);
1240 term_word(p, n->string);
1241 term_fontpop(p);
1242
1243 if (nchild > 2 && n->next) {
1244 p->flags |= TERMP_NOSPACE;
1245 term_word(p, ",");
1246 }
1247
1248 if (n->next && NULL == n->next->next)
1249 term_word(p, "and");
1250 }
1251
1252 if (nchild > 1)
1253 term_word(p, "utilities exit");
1254 else
1255 term_word(p, "utility exits");
1256
1257 term_word(p, "0 on success, and >0 if an error occurs.");
1258
1259 p->flags |= TERMP_SENTENCE;
1260 return(0);
1261 }
1262
1263
1264 /* ARGSUSED */
1265 static int
1266 termp_nd_pre(DECL_ARGS)
1267 {
1268
1269 if (MDOC_BODY != n->type)
1270 return(1);
1271
1272 #if defined(__OpenBSD__) || defined(__linux__)
1273 term_word(p, "\\(en");
1274 #else
1275 term_word(p, "\\(em");
1276 #endif
1277 return(1);
1278 }
1279
1280
1281 /* ARGSUSED */
1282 static int
1283 termp_bl_pre(DECL_ARGS)
1284 {
1285
1286 return(MDOC_HEAD != n->type);
1287 }
1288
1289
1290 /* ARGSUSED */
1291 static void
1292 termp_bl_post(DECL_ARGS)
1293 {
1294
1295 if (MDOC_BLOCK == n->type)
1296 term_newln(p);
1297 }
1298
1299 /* ARGSUSED */
1300 static int
1301 termp_xr_pre(DECL_ARGS)
1302 {
1303
1304 if (NULL == (n = n->child))
1305 return(0);
1306
1307 assert(MDOC_TEXT == n->type);
1308 term_word(p, n->string);
1309
1310 if (NULL == (n = n->next))
1311 return(0);
1312
1313 p->flags |= TERMP_NOSPACE;
1314 term_word(p, "(");
1315 p->flags |= TERMP_NOSPACE;
1316
1317 assert(MDOC_TEXT == n->type);
1318 term_word(p, n->string);
1319
1320 p->flags |= TERMP_NOSPACE;
1321 term_word(p, ")");
1322
1323 return(0);
1324 }
1325
1326 /*
1327 * This decides how to assert whitespace before any of the SYNOPSIS set
1328 * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
1329 * macro combos).
1330 */
1331 static void
1332 synopsis_pre(struct termp *p, const struct mdoc_node *n)
1333 {
1334 /*
1335 * Obviously, if we're not in a SYNOPSIS or no prior macros
1336 * exist, do nothing.
1337 */
1338 if (NULL == n->prev || ! (MDOC_SYNPRETTY & n->flags))
1339 return;
1340
1341 /*
1342 * If we're the second in a pair of like elements, emit our
1343 * newline and return. UNLESS we're `Fo', `Fn', `Fn', in which
1344 * case we soldier on.
1345 */
1346 if (n->prev->tok == n->tok &&
1347 MDOC_Ft != n->tok &&
1348 MDOC_Fo != n->tok &&
1349 MDOC_Fn != n->tok) {
1350 term_newln(p);
1351 return;
1352 }
1353
1354 /*
1355 * If we're one of the SYNOPSIS set and non-like pair-wise after
1356 * another (or Fn/Fo, which we've let slip through) then assert
1357 * vertical space, else only newline and move on.
1358 */
1359 switch (n->prev->tok) {
1360 case (MDOC_Fd):
1361 /* FALLTHROUGH */
1362 case (MDOC_Fn):
1363 /* FALLTHROUGH */
1364 case (MDOC_Fo):
1365 /* FALLTHROUGH */
1366 case (MDOC_In):
1367 /* FALLTHROUGH */
1368 case (MDOC_Vt):
1369 term_vspace(p);
1370 break;
1371 case (MDOC_Ft):
1372 if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
1373 term_vspace(p);
1374 break;
1375 }
1376 /* FALLTHROUGH */
1377 default:
1378 term_newln(p);
1379 break;
1380 }
1381 }
1382
1383
1384 static int
1385 termp_vt_pre(DECL_ARGS)
1386 {
1387
1388 if (MDOC_ELEM == n->type) {
1389 synopsis_pre(p, n);
1390 return(termp_under_pre(p, pair, m, n));
1391 } else if (MDOC_BLOCK == n->type) {
1392 synopsis_pre(p, n);
1393 return(1);
1394 } else if (MDOC_HEAD == n->type)
1395 return(0);
1396
1397 return(termp_under_pre(p, pair, m, n));
1398 }
1399
1400
1401 /* ARGSUSED */
1402 static int
1403 termp_bold_pre(DECL_ARGS)
1404 {
1405
1406 term_fontpush(p, TERMFONT_BOLD);
1407 return(1);
1408 }
1409
1410
1411 /* ARGSUSED */
1412 static int
1413 termp_fd_pre(DECL_ARGS)
1414 {
1415
1416 synopsis_pre(p, n);
1417 return(termp_bold_pre(p, pair, m, n));
1418 }
1419
1420
1421 /* ARGSUSED */
1422 static int
1423 termp_sh_pre(DECL_ARGS)
1424 {
1425
1426 /* No vspace between consecutive `Sh' calls. */
1427
1428 switch (n->type) {
1429 case (MDOC_BLOCK):
1430 if (n->prev && MDOC_Sh == n->prev->tok)
1431 if (NULL == n->prev->body->child)
1432 break;
1433 term_vspace(p);
1434 break;
1435 case (MDOC_HEAD):
1436 term_fontpush(p, TERMFONT_BOLD);
1437 break;
1438 case (MDOC_BODY):
1439 p->offset = term_len(p, INDENT);
1440 break;
1441 default:
1442 break;
1443 }
1444 return(1);
1445 }
1446
1447
1448 /* ARGSUSED */
1449 static void
1450 termp_sh_post(DECL_ARGS)
1451 {
1452
1453 switch (n->type) {
1454 case (MDOC_HEAD):
1455 term_newln(p);
1456 break;
1457 case (MDOC_BODY):
1458 term_newln(p);
1459 p->offset = 0;
1460 break;
1461 default:
1462 break;
1463 }
1464 }
1465
1466
1467 /* ARGSUSED */
1468 static int
1469 termp_bt_pre(DECL_ARGS)
1470 {
1471
1472 term_word(p, "is currently in beta test.");
1473 p->flags |= TERMP_SENTENCE;
1474 return(0);
1475 }
1476
1477
1478 /* ARGSUSED */
1479 static void
1480 termp_lb_post(DECL_ARGS)
1481 {
1482
1483 if (SEC_LIBRARY == n->sec && MDOC_LINE & n->flags)
1484 term_newln(p);
1485 }
1486
1487
1488 /* ARGSUSED */
1489 static int
1490 termp_ud_pre(DECL_ARGS)
1491 {
1492
1493 term_word(p, "currently under development.");
1494 p->flags |= TERMP_SENTENCE;
1495 return(0);
1496 }
1497
1498
1499 /* ARGSUSED */
1500 static int
1501 termp_d1_pre(DECL_ARGS)
1502 {
1503
1504 if (MDOC_BLOCK != n->type)
1505 return(1);
1506 term_newln(p);
1507 p->offset += term_len(p, (INDENT + 1));
1508 return(1);
1509 }
1510
1511
1512 /* ARGSUSED */
1513 static void
1514 termp_d1_post(DECL_ARGS)
1515 {
1516
1517 if (MDOC_BLOCK != n->type)
1518 return;
1519 term_newln(p);
1520 }
1521
1522
1523 /* ARGSUSED */
1524 static int
1525 termp_ft_pre(DECL_ARGS)
1526 {
1527
1528 /* NB: MDOC_LINE does not effect this! */
1529 synopsis_pre(p, n);
1530 term_fontpush(p, TERMFONT_UNDER);
1531 return(1);
1532 }
1533
1534
1535 /* ARGSUSED */
1536 static int
1537 termp_fn_pre(DECL_ARGS)
1538 {
1539 int pretty;
1540
1541 pretty = MDOC_SYNPRETTY & n->flags;
1542
1543 synopsis_pre(p, n);
1544
1545 if (NULL == (n = n->child))
1546 return(0);
1547
1548 assert(MDOC_TEXT == n->type);
1549 term_fontpush(p, TERMFONT_BOLD);
1550 term_word(p, n->string);
1551 term_fontpop(p);
1552
1553 p->flags |= TERMP_NOSPACE;
1554 term_word(p, "(");
1555 p->flags |= TERMP_NOSPACE;
1556
1557 for (n = n->next; n; n = n->next) {
1558 assert(MDOC_TEXT == n->type);
1559 term_fontpush(p, TERMFONT_UNDER);
1560 term_word(p, n->string);
1561 term_fontpop(p);
1562
1563 if (n->next) {
1564 p->flags |= TERMP_NOSPACE;
1565 term_word(p, ",");
1566 }
1567 }
1568
1569 p->flags |= TERMP_NOSPACE;
1570 term_word(p, ")");
1571
1572 if (pretty) {
1573 p->flags |= TERMP_NOSPACE;
1574 term_word(p, ";");
1575 }
1576
1577 return(0);
1578 }
1579
1580
1581 /* ARGSUSED */
1582 static int
1583 termp_fa_pre(DECL_ARGS)
1584 {
1585 const struct mdoc_node *nn;
1586
1587 if (n->parent->tok != MDOC_Fo) {
1588 term_fontpush(p, TERMFONT_UNDER);
1589 return(1);
1590 }
1591
1592 for (nn = n->child; nn; nn = nn->next) {
1593 term_fontpush(p, TERMFONT_UNDER);
1594 term_word(p, nn->string);
1595 term_fontpop(p);
1596
1597 if (nn->next) {
1598 p->flags |= TERMP_NOSPACE;
1599 term_word(p, ",");
1600 }
1601 }
1602
1603 if (n->child && n->next && n->next->tok == MDOC_Fa) {
1604 p->flags |= TERMP_NOSPACE;
1605 term_word(p, ",");
1606 }
1607
1608 return(0);
1609 }
1610
1611
1612 /* ARGSUSED */
1613 static int
1614 termp_bd_pre(DECL_ARGS)
1615 {
1616 size_t tabwidth, rm, rmax;
1617 const struct mdoc_node *nn;
1618
1619 if (MDOC_BLOCK == n->type) {
1620 print_bvspace(p, n, n);
1621 return(1);
1622 } else if (MDOC_HEAD == n->type)
1623 return(0);
1624
1625 if (n->norm->Bd.offs)
1626 p->offset += a2offs(p, n->norm->Bd.offs);
1627
1628 /*
1629 * If -ragged or -filled are specified, the block does nothing
1630 * but change the indentation. If -unfilled or -literal are
1631 * specified, text is printed exactly as entered in the display:
1632 * for macro lines, a newline is appended to the line. Blank
1633 * lines are allowed.
1634 */
1635
1636 if (DISP_literal != n->norm->Bd.type &&
1637 DISP_unfilled != n->norm->Bd.type)
1638 return(1);
1639
1640 tabwidth = p->tabwidth;
1641 if (DISP_literal == n->norm->Bd.type)
1642 p->tabwidth = term_len(p, 8);
1643
1644 rm = p->rmargin;
1645 rmax = p->maxrmargin;
1646 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1647
1648 for (nn = n->child; nn; nn = nn->next) {
1649 print_mdoc_node(p, pair, m, nn);
1650 /*
1651 * If the printed node flushes its own line, then we
1652 * needn't do it here as well. This is hacky, but the
1653 * notion of selective eoln whitespace is pretty dumb
1654 * anyway, so don't sweat it.
1655 */
1656 switch (nn->tok) {
1657 case (MDOC_Sm):
1658 /* FALLTHROUGH */
1659 case (MDOC_br):
1660 /* FALLTHROUGH */
1661 case (MDOC_sp):
1662 /* FALLTHROUGH */
1663 case (MDOC_Bl):
1664 /* FALLTHROUGH */
1665 case (MDOC_D1):
1666 /* FALLTHROUGH */
1667 case (MDOC_Dl):
1668 /* FALLTHROUGH */
1669 case (MDOC_Lp):
1670 /* FALLTHROUGH */
1671 case (MDOC_Pp):
1672 continue;
1673 default:
1674 break;
1675 }
1676 if (nn->next && nn->next->line == nn->line)
1677 continue;
1678 term_flushln(p);
1679 p->flags |= TERMP_NOSPACE;
1680 }
1681
1682 p->tabwidth = tabwidth;
1683 p->rmargin = rm;
1684 p->maxrmargin = rmax;
1685 return(0);
1686 }
1687
1688
1689 /* ARGSUSED */
1690 static void
1691 termp_bd_post(DECL_ARGS)
1692 {
1693 size_t rm, rmax;
1694
1695 if (MDOC_BODY != n->type)
1696 return;
1697
1698 rm = p->rmargin;
1699 rmax = p->maxrmargin;
1700
1701 if (DISP_literal == n->norm->Bd.type ||
1702 DISP_unfilled == n->norm->Bd.type)
1703 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1704
1705 p->flags |= TERMP_NOSPACE;
1706 term_newln(p);
1707
1708 p->rmargin = rm;
1709 p->maxrmargin = rmax;
1710 }
1711
1712
1713 /* ARGSUSED */
1714 static int
1715 termp_bx_pre(DECL_ARGS)
1716 {
1717
1718 if (NULL != (n = n->child)) {
1719 term_word(p, n->string);
1720 p->flags |= TERMP_NOSPACE;
1721 term_word(p, "BSD");
1722 } else {
1723 term_word(p, "BSD");
1724 return(0);
1725 }
1726
1727 if (NULL != (n = n->next)) {
1728 p->flags |= TERMP_NOSPACE;
1729 term_word(p, "-");
1730 p->flags |= TERMP_NOSPACE;
1731 term_word(p, n->string);
1732 }
1733
1734 return(0);
1735 }
1736
1737
1738 /* ARGSUSED */
1739 static int
1740 termp_xx_pre(DECL_ARGS)
1741 {
1742 const char *pp;
1743 int flags;
1744
1745 pp = NULL;
1746 switch (n->tok) {
1747 case (MDOC_Bsx):
1748 pp = "BSD/OS";
1749 break;
1750 case (MDOC_Dx):
1751 pp = "DragonFly";
1752 break;
1753 case (MDOC_Fx):
1754 pp = "FreeBSD";
1755 break;
1756 case (MDOC_Nx):
1757 pp = "NetBSD";
1758 break;
1759 case (MDOC_Ox):
1760 pp = "OpenBSD";
1761 break;
1762 case (MDOC_Ux):
1763 pp = "UNIX";
1764 break;
1765 default:
1766 break;
1767 }
1768
1769 term_word(p, pp);
1770 if (n->child) {
1771 flags = p->flags;
1772 p->flags |= TERMP_KEEP;
1773 term_word(p, n->child->string);
1774 p->flags = flags;
1775 }
1776 return(0);
1777 }
1778
1779
1780 /* ARGSUSED */
1781 static int
1782 termp_igndelim_pre(DECL_ARGS)
1783 {
1784
1785 p->flags |= TERMP_IGNDELIM;
1786 return(1);
1787 }
1788
1789
1790 /* ARGSUSED */
1791 static void
1792 termp_pf_post(DECL_ARGS)
1793 {
1794
1795 p->flags |= TERMP_NOSPACE;
1796 }
1797
1798
1799 /* ARGSUSED */
1800 static int
1801 termp_ss_pre(DECL_ARGS)
1802 {
1803
1804 switch (n->type) {
1805 case (MDOC_BLOCK):
1806 term_newln(p);
1807 if (n->prev)
1808 term_vspace(p);
1809 break;
1810 case (MDOC_HEAD):
1811 term_fontpush(p, TERMFONT_BOLD);
1812 p->offset = term_len(p, HALFINDENT);
1813 break;
1814 default:
1815 break;
1816 }
1817
1818 return(1);
1819 }
1820
1821
1822 /* ARGSUSED */
1823 static void
1824 termp_ss_post(DECL_ARGS)
1825 {
1826
1827 if (MDOC_HEAD == n->type)
1828 term_newln(p);
1829 }
1830
1831
1832 /* ARGSUSED */
1833 static int
1834 termp_cd_pre(DECL_ARGS)
1835 {
1836
1837 synopsis_pre(p, n);
1838 term_fontpush(p, TERMFONT_BOLD);
1839 return(1);
1840 }
1841
1842
1843 /* ARGSUSED */
1844 static int
1845 termp_in_pre(DECL_ARGS)
1846 {
1847
1848 synopsis_pre(p, n);
1849
1850 if (MDOC_SYNPRETTY & n->flags && MDOC_LINE & n->flags) {
1851 term_fontpush(p, TERMFONT_BOLD);
1852 term_word(p, "#include");
1853 term_word(p, "<");
1854 } else {
1855 term_word(p, "<");
1856 term_fontpush(p, TERMFONT_UNDER);
1857 }
1858
1859 p->flags |= TERMP_NOSPACE;
1860 return(1);
1861 }
1862
1863
1864 /* ARGSUSED */
1865 static void
1866 termp_in_post(DECL_ARGS)
1867 {
1868
1869 if (MDOC_SYNPRETTY & n->flags)
1870 term_fontpush(p, TERMFONT_BOLD);
1871
1872 p->flags |= TERMP_NOSPACE;
1873 term_word(p, ">");
1874
1875 if (MDOC_SYNPRETTY & n->flags)
1876 term_fontpop(p);
1877 }
1878
1879
1880 /* ARGSUSED */
1881 static int
1882 termp_sp_pre(DECL_ARGS)
1883 {
1884 size_t i, len;
1885
1886 switch (n->tok) {
1887 case (MDOC_sp):
1888 len = n->child ? a2height(p, n->child->string) : 1;
1889 break;
1890 case (MDOC_br):
1891 len = 0;
1892 break;
1893 default:
1894 len = 1;
1895 break;
1896 }
1897
1898 if (0 == len)
1899 term_newln(p);
1900 for (i = 0; i < len; i++)
1901 term_vspace(p);
1902
1903 return(0);
1904 }
1905
1906
1907 /* ARGSUSED */
1908 static int
1909 termp_quote_pre(DECL_ARGS)
1910 {
1911
1912 if (MDOC_BODY != n->type && MDOC_ELEM != n->type)
1913 return(1);
1914
1915 switch (n->tok) {
1916 case (MDOC_Ao):
1917 /* FALLTHROUGH */
1918 case (MDOC_Aq):
1919 term_word(p, "<");
1920 break;
1921 case (MDOC_Bro):
1922 /* FALLTHROUGH */
1923 case (MDOC_Brq):
1924 term_word(p, "{");
1925 break;
1926 case (MDOC_Oo):
1927 /* FALLTHROUGH */
1928 case (MDOC_Op):
1929 /* FALLTHROUGH */
1930 case (MDOC_Bo):
1931 /* FALLTHROUGH */
1932 case (MDOC_Bq):
1933 term_word(p, "[");
1934 break;
1935 case (MDOC_Do):
1936 /* FALLTHROUGH */
1937 case (MDOC_Dq):
1938 term_word(p, "``");
1939 break;
1940 case (MDOC_Po):
1941 /* FALLTHROUGH */
1942 case (MDOC_Pq):
1943 term_word(p, "(");
1944 break;
1945 case (MDOC__T):
1946 /* FALLTHROUGH */
1947 case (MDOC_Qo):
1948 /* FALLTHROUGH */
1949 case (MDOC_Qq):
1950 term_word(p, "\"");
1951 break;
1952 case (MDOC_Ql):
1953 /* FALLTHROUGH */
1954 case (MDOC_So):
1955 /* FALLTHROUGH */
1956 case (MDOC_Sq):
1957 term_word(p, "`");
1958 break;
1959 default:
1960 abort();
1961 /* NOTREACHED */
1962 }
1963
1964 p->flags |= TERMP_NOSPACE;
1965 return(1);
1966 }
1967
1968
1969 /* ARGSUSED */
1970 static void
1971 termp_quote_post(DECL_ARGS)
1972 {
1973
1974 if (MDOC_BODY != n->type && MDOC_ELEM != n->type)
1975 return;
1976
1977 p->flags |= TERMP_NOSPACE;
1978
1979 switch (n->tok) {
1980 case (MDOC_Ao):
1981 /* FALLTHROUGH */
1982 case (MDOC_Aq):
1983 term_word(p, ">");
1984 break;
1985 case (MDOC_Bro):
1986 /* FALLTHROUGH */
1987 case (MDOC_Brq):
1988 term_word(p, "}");
1989 break;
1990 case (MDOC_Oo):
1991 /* FALLTHROUGH */
1992 case (MDOC_Op):
1993 /* FALLTHROUGH */
1994 case (MDOC_Bo):
1995 /* FALLTHROUGH */
1996 case (MDOC_Bq):
1997 term_word(p, "]");
1998 break;
1999 case (MDOC_Do):
2000 /* FALLTHROUGH */
2001 case (MDOC_Dq):
2002 term_word(p, "''");
2003 break;
2004 case (MDOC_Po):
2005 /* FALLTHROUGH */
2006 case (MDOC_Pq):
2007 term_word(p, ")");
2008 break;
2009 case (MDOC__T):
2010 /* FALLTHROUGH */
2011 case (MDOC_Qo):
2012 /* FALLTHROUGH */
2013 case (MDOC_Qq):
2014 term_word(p, "\"");
2015 break;
2016 case (MDOC_Ql):
2017 /* FALLTHROUGH */
2018 case (MDOC_So):
2019 /* FALLTHROUGH */
2020 case (MDOC_Sq):
2021 term_word(p, "'");
2022 break;
2023 default:
2024 abort();
2025 /* NOTREACHED */
2026 }
2027 }
2028
2029
2030 /* ARGSUSED */
2031 static int
2032 termp_fo_pre(DECL_ARGS)
2033 {
2034
2035 if (MDOC_BLOCK == n->type) {
2036 synopsis_pre(p, n);
2037 return(1);
2038 } else if (MDOC_BODY == n->type) {
2039 p->flags |= TERMP_NOSPACE;
2040 term_word(p, "(");
2041 p->flags |= TERMP_NOSPACE;
2042 return(1);
2043 }
2044
2045 if (NULL == n->child)
2046 return(0);
2047
2048 /* XXX: we drop non-initial arguments as per groff. */
2049
2050 assert(n->child->string);
2051 term_fontpush(p, TERMFONT_BOLD);
2052 term_word(p, n->child->string);
2053 return(0);
2054 }
2055
2056
2057 /* ARGSUSED */
2058 static void
2059 termp_fo_post(DECL_ARGS)
2060 {
2061
2062 if (MDOC_BODY != n->type)
2063 return;
2064
2065 p->flags |= TERMP_NOSPACE;
2066 term_word(p, ")");
2067
2068 if (MDOC_SYNPRETTY & n->flags) {
2069 p->flags |= TERMP_NOSPACE;
2070 term_word(p, ";");
2071 }
2072 }
2073
2074
2075 /* ARGSUSED */
2076 static int
2077 termp_bf_pre(DECL_ARGS)
2078 {
2079
2080 if (MDOC_HEAD == n->type)
2081 return(0);
2082 else if (MDOC_BLOCK != n->type)
2083 return(1);
2084
2085 if (FONT_Em == n->norm->Bf.font)
2086 term_fontpush(p, TERMFONT_UNDER);
2087 else if (FONT_Sy == n->norm->Bf.font)
2088 term_fontpush(p, TERMFONT_BOLD);
2089 else
2090 term_fontpush(p, TERMFONT_NONE);
2091
2092 return(1);
2093 }
2094
2095
2096 /* ARGSUSED */
2097 static int
2098 termp_sm_pre(DECL_ARGS)
2099 {
2100
2101 assert(n->child && MDOC_TEXT == n->child->type);
2102 if (0 == strcmp("on", n->child->string)) {
2103 if (p->col)
2104 p->flags &= ~TERMP_NOSPACE;
2105 p->flags &= ~TERMP_NONOSPACE;
2106 } else
2107 p->flags |= TERMP_NONOSPACE;
2108
2109 return(0);
2110 }
2111
2112
2113 /* ARGSUSED */
2114 static int
2115 termp_ap_pre(DECL_ARGS)
2116 {
2117
2118 p->flags |= TERMP_NOSPACE;
2119 term_word(p, "'");
2120 p->flags |= TERMP_NOSPACE;
2121 return(1);
2122 }
2123
2124
2125 /* ARGSUSED */
2126 static void
2127 termp____post(DECL_ARGS)
2128 {
2129
2130 /*
2131 * Handle lists of authors. In general, print each followed by
2132 * a comma. Don't print the comma if there are only two
2133 * authors.
2134 */
2135 if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
2136 if (NULL == n->next->next || MDOC__A != n->next->next->tok)
2137 if (NULL == n->prev || MDOC__A != n->prev->tok)
2138 return;
2139
2140 /* TODO: %U. */
2141
2142 if (NULL == n->parent || MDOC_Rs != n->parent->tok)
2143 return;
2144
2145 p->flags |= TERMP_NOSPACE;
2146 if (NULL == n->next) {
2147 term_word(p, ".");
2148 p->flags |= TERMP_SENTENCE;
2149 } else
2150 term_word(p, ",");
2151 }
2152
2153
2154 /* ARGSUSED */
2155 static int
2156 termp_li_pre(DECL_ARGS)
2157 {
2158
2159 term_fontpush(p, TERMFONT_NONE);
2160 return(1);
2161 }
2162
2163
2164 /* ARGSUSED */
2165 static int
2166 termp_lk_pre(DECL_ARGS)
2167 {
2168 const struct mdoc_node *nn, *sv;
2169
2170 term_fontpush(p, TERMFONT_UNDER);
2171
2172 nn = sv = n->child;
2173
2174 if (NULL == nn || NULL == nn->next)
2175 return(1);
2176
2177 for (nn = nn->next; nn; nn = nn->next)
2178 term_word(p, nn->string);
2179
2180 term_fontpop(p);
2181
2182 p->flags |= TERMP_NOSPACE;
2183 term_word(p, ":");
2184
2185 term_fontpush(p, TERMFONT_BOLD);
2186 term_word(p, sv->string);
2187 term_fontpop(p);
2188
2189 return(0);
2190 }
2191
2192
2193 /* ARGSUSED */
2194 static int
2195 termp_bk_pre(DECL_ARGS)
2196 {
2197
2198 switch (n->type) {
2199 case (MDOC_BLOCK):
2200 break;
2201 case (MDOC_HEAD):
2202 return(0);
2203 case (MDOC_BODY):
2204 if (n->parent->args || 0 == n->prev->nchild)
2205 p->flags |= TERMP_PREKEEP;
2206 break;
2207 default:
2208 abort();
2209 /* NOTREACHED */
2210 }
2211
2212 return(1);
2213 }
2214
2215
2216 /* ARGSUSED */
2217 static void
2218 termp_bk_post(DECL_ARGS)
2219 {
2220
2221 if (MDOC_BODY == n->type)
2222 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
2223 }
2224
2225 /* ARGSUSED */
2226 static void
2227 termp__t_post(DECL_ARGS)
2228 {
2229
2230 /*
2231 * If we're in an `Rs' and there's a journal present, then quote
2232 * us instead of underlining us (for disambiguation).
2233 */
2234 if (n->parent && MDOC_Rs == n->parent->tok &&
2235 n->parent->norm->Rs.quote_T)
2236 termp_quote_post(p, pair, m, n);
2237
2238 termp____post(p, pair, m, n);
2239 }
2240
2241 /* ARGSUSED */
2242 static int
2243 termp__t_pre(DECL_ARGS)
2244 {
2245
2246 /*
2247 * If we're in an `Rs' and there's a journal present, then quote
2248 * us instead of underlining us (for disambiguation).
2249 */
2250 if (n->parent && MDOC_Rs == n->parent->tok &&
2251 n->parent->norm->Rs.quote_T)
2252 return(termp_quote_pre(p, pair, m, n));
2253
2254 term_fontpush(p, TERMFONT_UNDER);
2255 return(1);
2256 }
2257
2258 /* ARGSUSED */
2259 static int
2260 termp_under_pre(DECL_ARGS)
2261 {
2262
2263 term_fontpush(p, TERMFONT_UNDER);
2264 return(1);
2265 }
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