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[mandoc.git] / mdoc_term.c
1 /* $Id: mdoc_term.c,v 1.238 2011/11/13 13:15:14 schwarze 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 struct termpair {
38 struct termpair *ppair;
39 int count;
40 };
41
42 #define DECL_ARGS struct termp *p, \
43 struct termpair *pair, \
44 const struct mdoc_meta *m, \
45 const struct mdoc_node *n
46
47 struct termact {
48 int (*pre)(DECL_ARGS);
49 void (*post)(DECL_ARGS);
50 };
51
52 static size_t a2width(const struct termp *, const char *);
53 static size_t a2height(const struct termp *, const char *);
54 static size_t a2offs(const struct termp *, const char *);
55
56 static void print_bvspace(struct termp *,
57 const struct mdoc_node *,
58 const struct mdoc_node *);
59 static void print_mdoc_node(DECL_ARGS);
60 static void print_mdoc_nodelist(DECL_ARGS);
61 static void print_mdoc_head(struct termp *, const void *);
62 static void print_mdoc_foot(struct termp *, const void *);
63 static void synopsis_pre(struct termp *,
64 const struct mdoc_node *);
65
66 static void termp____post(DECL_ARGS);
67 static void termp__t_post(DECL_ARGS);
68 static void termp_an_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_d1_post(DECL_ARGS);
73 static void termp_fo_post(DECL_ARGS);
74 static void termp_in_post(DECL_ARGS);
75 static void termp_it_post(DECL_ARGS);
76 static void termp_lb_post(DECL_ARGS);
77 static void termp_nm_post(DECL_ARGS);
78 static void termp_pf_post(DECL_ARGS);
79 static void termp_quote_post(DECL_ARGS);
80 static void termp_sh_post(DECL_ARGS);
81 static void termp_ss_post(DECL_ARGS);
82
83 static int termp__a_pre(DECL_ARGS);
84 static int termp__t_pre(DECL_ARGS);
85 static int termp_an_pre(DECL_ARGS);
86 static int termp_ap_pre(DECL_ARGS);
87 static int termp_bd_pre(DECL_ARGS);
88 static int termp_bf_pre(DECL_ARGS);
89 static int termp_bk_pre(DECL_ARGS);
90 static int termp_bl_pre(DECL_ARGS);
91 static int termp_bold_pre(DECL_ARGS);
92 static int termp_bt_pre(DECL_ARGS);
93 static int termp_bx_pre(DECL_ARGS);
94 static int termp_cd_pre(DECL_ARGS);
95 static int termp_d1_pre(DECL_ARGS);
96 static int termp_ex_pre(DECL_ARGS);
97 static int termp_fa_pre(DECL_ARGS);
98 static int termp_fd_pre(DECL_ARGS);
99 static int termp_fl_pre(DECL_ARGS);
100 static int termp_fn_pre(DECL_ARGS);
101 static int termp_fo_pre(DECL_ARGS);
102 static int termp_ft_pre(DECL_ARGS);
103 static int termp_igndelim_pre(DECL_ARGS);
104 static int termp_in_pre(DECL_ARGS);
105 static int termp_it_pre(DECL_ARGS);
106 static int termp_li_pre(DECL_ARGS);
107 static int termp_lk_pre(DECL_ARGS);
108 static int termp_nd_pre(DECL_ARGS);
109 static int termp_nm_pre(DECL_ARGS);
110 static int termp_ns_pre(DECL_ARGS);
111 static int termp_quote_pre(DECL_ARGS);
112 static int termp_rs_pre(DECL_ARGS);
113 static int termp_rv_pre(DECL_ARGS);
114 static int termp_sh_pre(DECL_ARGS);
115 static int termp_sm_pre(DECL_ARGS);
116 static int termp_sp_pre(DECL_ARGS);
117 static int termp_ss_pre(DECL_ARGS);
118 static int termp_under_pre(DECL_ARGS);
119 static int termp_ud_pre(DECL_ARGS);
120 static int termp_vt_pre(DECL_ARGS);
121 static int termp_xr_pre(DECL_ARGS);
122 static int termp_xx_pre(DECL_ARGS);
123
124 static const struct termact termacts[MDOC_MAX] = {
125 { termp_ap_pre, NULL }, /* Ap */
126 { NULL, NULL }, /* Dd */
127 { NULL, NULL }, /* Dt */
128 { NULL, NULL }, /* Os */
129 { termp_sh_pre, termp_sh_post }, /* Sh */
130 { termp_ss_pre, termp_ss_post }, /* Ss */
131 { termp_sp_pre, NULL }, /* Pp */
132 { termp_d1_pre, termp_d1_post }, /* D1 */
133 { termp_d1_pre, termp_d1_post }, /* Dl */
134 { termp_bd_pre, termp_bd_post }, /* Bd */
135 { NULL, NULL }, /* Ed */
136 { termp_bl_pre, termp_bl_post }, /* Bl */
137 { NULL, NULL }, /* El */
138 { termp_it_pre, termp_it_post }, /* It */
139 { termp_under_pre, NULL }, /* Ad */
140 { termp_an_pre, termp_an_post }, /* An */
141 { termp_under_pre, NULL }, /* Ar */
142 { termp_cd_pre, NULL }, /* Cd */
143 { termp_bold_pre, NULL }, /* Cm */
144 { NULL, NULL }, /* Dv */
145 { NULL, NULL }, /* Er */
146 { NULL, NULL }, /* Ev */
147 { termp_ex_pre, NULL }, /* Ex */
148 { termp_fa_pre, NULL }, /* Fa */
149 { termp_fd_pre, NULL }, /* Fd */
150 { termp_fl_pre, NULL }, /* Fl */
151 { termp_fn_pre, NULL }, /* Fn */
152 { termp_ft_pre, NULL }, /* Ft */
153 { termp_bold_pre, NULL }, /* Ic */
154 { termp_in_pre, termp_in_post }, /* In */
155 { termp_li_pre, NULL }, /* Li */
156 { termp_nd_pre, NULL }, /* Nd */
157 { termp_nm_pre, termp_nm_post }, /* Nm */
158 { termp_quote_pre, termp_quote_post }, /* Op */
159 { NULL, NULL }, /* Ot */
160 { termp_under_pre, NULL }, /* Pa */
161 { termp_rv_pre, NULL }, /* Rv */
162 { NULL, NULL }, /* St */
163 { termp_under_pre, NULL }, /* Va */
164 { termp_vt_pre, NULL }, /* Vt */
165 { termp_xr_pre, NULL }, /* Xr */
166 { termp__a_pre, termp____post }, /* %A */
167 { termp_under_pre, termp____post }, /* %B */
168 { NULL, termp____post }, /* %D */
169 { termp_under_pre, termp____post }, /* %I */
170 { termp_under_pre, termp____post }, /* %J */
171 { NULL, termp____post }, /* %N */
172 { NULL, termp____post }, /* %O */
173 { NULL, termp____post }, /* %P */
174 { NULL, termp____post }, /* %R */
175 { termp__t_pre, termp__t_post }, /* %T */
176 { NULL, termp____post }, /* %V */
177 { NULL, NULL }, /* Ac */
178 { termp_quote_pre, termp_quote_post }, /* Ao */
179 { termp_quote_pre, termp_quote_post }, /* Aq */
180 { NULL, NULL }, /* At */
181 { NULL, NULL }, /* Bc */
182 { termp_bf_pre, NULL }, /* Bf */
183 { termp_quote_pre, termp_quote_post }, /* Bo */
184 { termp_quote_pre, termp_quote_post }, /* Bq */
185 { termp_xx_pre, NULL }, /* Bsx */
186 { termp_bx_pre, NULL }, /* Bx */
187 { NULL, NULL }, /* Db */
188 { NULL, NULL }, /* Dc */
189 { termp_quote_pre, termp_quote_post }, /* Do */
190 { termp_quote_pre, termp_quote_post }, /* Dq */
191 { NULL, NULL }, /* Ec */ /* FIXME: no space */
192 { NULL, NULL }, /* Ef */
193 { termp_under_pre, NULL }, /* Em */
194 { termp_quote_pre, termp_quote_post }, /* Eo */
195 { termp_xx_pre, NULL }, /* Fx */
196 { termp_bold_pre, NULL }, /* Ms */
197 { termp_igndelim_pre, NULL }, /* No */
198 { termp_ns_pre, NULL }, /* Ns */
199 { termp_xx_pre, NULL }, /* Nx */
200 { termp_xx_pre, NULL }, /* Ox */
201 { NULL, NULL }, /* Pc */
202 { termp_igndelim_pre, termp_pf_post }, /* Pf */
203 { termp_quote_pre, termp_quote_post }, /* Po */
204 { termp_quote_pre, termp_quote_post }, /* Pq */
205 { NULL, NULL }, /* Qc */
206 { termp_quote_pre, termp_quote_post }, /* Ql */
207 { termp_quote_pre, termp_quote_post }, /* Qo */
208 { termp_quote_pre, termp_quote_post }, /* Qq */
209 { NULL, NULL }, /* Re */
210 { termp_rs_pre, NULL }, /* Rs */
211 { NULL, NULL }, /* Sc */
212 { termp_quote_pre, termp_quote_post }, /* So */
213 { termp_quote_pre, termp_quote_post }, /* Sq */
214 { termp_sm_pre, NULL }, /* Sm */
215 { termp_under_pre, NULL }, /* Sx */
216 { termp_bold_pre, NULL }, /* Sy */
217 { NULL, NULL }, /* Tn */
218 { termp_xx_pre, NULL }, /* Ux */
219 { NULL, NULL }, /* Xc */
220 { NULL, NULL }, /* Xo */
221 { termp_fo_pre, termp_fo_post }, /* Fo */
222 { NULL, NULL }, /* Fc */
223 { termp_quote_pre, termp_quote_post }, /* Oo */
224 { NULL, NULL }, /* Oc */
225 { termp_bk_pre, termp_bk_post }, /* Bk */
226 { NULL, NULL }, /* Ek */
227 { termp_bt_pre, NULL }, /* Bt */
228 { NULL, NULL }, /* Hf */
229 { NULL, NULL }, /* Fr */
230 { termp_ud_pre, NULL }, /* Ud */
231 { NULL, termp_lb_post }, /* Lb */
232 { termp_sp_pre, NULL }, /* Lp */
233 { termp_lk_pre, NULL }, /* Lk */
234 { termp_under_pre, NULL }, /* Mt */
235 { termp_quote_pre, termp_quote_post }, /* Brq */
236 { termp_quote_pre, termp_quote_post }, /* Bro */
237 { NULL, NULL }, /* Brc */
238 { NULL, termp____post }, /* %C */
239 { NULL, NULL }, /* Es */ /* TODO */
240 { NULL, NULL }, /* En */ /* TODO */
241 { termp_xx_pre, NULL }, /* Dx */
242 { NULL, termp____post }, /* %Q */
243 { termp_sp_pre, NULL }, /* br */
244 { termp_sp_pre, NULL }, /* sp */
245 { termp_under_pre, termp____post }, /* %U */
246 { NULL, NULL }, /* Ta */
247 };
248
249
250 void
251 terminal_mdoc(void *arg, const struct mdoc *mdoc)
252 {
253 const struct mdoc_node *n;
254 const struct mdoc_meta *m;
255 struct termp *p;
256
257 p = (struct termp *)arg;
258
259 if (0 == p->defindent)
260 p->defindent = 5;
261
262 p->overstep = 0;
263 p->maxrmargin = p->defrmargin;
264 p->tabwidth = term_len(p, 5);
265
266 if (NULL == p->symtab)
267 p->symtab = mchars_alloc();
268
269 n = mdoc_node(mdoc);
270 m = mdoc_meta(mdoc);
271
272 term_begin(p, print_mdoc_head, print_mdoc_foot, m);
273
274 if (n->child)
275 print_mdoc_nodelist(p, NULL, m, n->child);
276
277 term_end(p);
278 }
279
280
281 static void
282 print_mdoc_nodelist(DECL_ARGS)
283 {
284
285 print_mdoc_node(p, pair, m, n);
286 if (n->next)
287 print_mdoc_nodelist(p, pair, m, n->next);
288 }
289
290
291 /* ARGSUSED */
292 static void
293 print_mdoc_node(DECL_ARGS)
294 {
295 int chld;
296 const void *font;
297 struct termpair npair;
298 size_t offset, rmargin;
299
300 chld = 1;
301 offset = p->offset;
302 rmargin = p->rmargin;
303 font = term_fontq(p);
304
305 memset(&npair, 0, sizeof(struct termpair));
306 npair.ppair = pair;
307
308 /*
309 * Keeps only work until the end of a line. If a keep was
310 * invoked in a prior line, revert it to PREKEEP.
311 *
312 * Also let SYNPRETTY sections behave as if they were wrapped
313 * in a `Bk' block.
314 */
315
316 if (TERMP_KEEP & p->flags || MDOC_SYNPRETTY & n->flags) {
317 if (n->prev && n->prev->line != n->line) {
318 p->flags &= ~TERMP_KEEP;
319 p->flags |= TERMP_PREKEEP;
320 } else if (NULL == n->prev) {
321 if (n->parent && n->parent->line != n->line) {
322 p->flags &= ~TERMP_KEEP;
323 p->flags |= TERMP_PREKEEP;
324 }
325 }
326 }
327
328 /*
329 * Since SYNPRETTY sections aren't "turned off" with `Ek',
330 * we have to intuit whether we should disable formatting.
331 */
332
333 if ( ! (MDOC_SYNPRETTY & n->flags) &&
334 ((n->prev && MDOC_SYNPRETTY & n->prev->flags) ||
335 (n->parent && MDOC_SYNPRETTY & n->parent->flags)))
336 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
337
338 /*
339 * After the keep flags have been set up, we may now
340 * produce output. Note that some pre-handlers do so.
341 */
342
343 switch (n->type) {
344 case (MDOC_TEXT):
345 if (' ' == *n->string && MDOC_LINE & n->flags)
346 term_newln(p);
347 if (MDOC_DELIMC & n->flags)
348 p->flags |= TERMP_NOSPACE;
349 term_word(p, n->string);
350 if (MDOC_DELIMO & n->flags)
351 p->flags |= TERMP_NOSPACE;
352 break;
353 case (MDOC_EQN):
354 term_eqn(p, n->eqn);
355 break;
356 case (MDOC_TBL):
357 term_tbl(p, n->span);
358 break;
359 default:
360 if (termacts[n->tok].pre && ENDBODY_NOT == n->end)
361 chld = (*termacts[n->tok].pre)
362 (p, &npair, m, n);
363 break;
364 }
365
366 if (chld && n->child)
367 print_mdoc_nodelist(p, &npair, m, n->child);
368
369 term_fontpopq(p, font);
370
371 switch (n->type) {
372 case (MDOC_TEXT):
373 break;
374 case (MDOC_TBL):
375 break;
376 case (MDOC_EQN):
377 break;
378 default:
379 if ( ! termacts[n->tok].post || MDOC_ENDED & n->flags)
380 break;
381 (void)(*termacts[n->tok].post)(p, &npair, m, n);
382
383 /*
384 * Explicit end tokens not only call the post
385 * handler, but also tell the respective block
386 * that it must not call the post handler again.
387 */
388 if (ENDBODY_NOT != n->end)
389 n->pending->flags |= MDOC_ENDED;
390
391 /*
392 * End of line terminating an implicit block
393 * while an explicit block is still open.
394 * Continue the explicit block without spacing.
395 */
396 if (ENDBODY_NOSPACE == n->end)
397 p->flags |= TERMP_NOSPACE;
398 break;
399 }
400
401 if (MDOC_EOS & n->flags)
402 p->flags |= TERMP_SENTENCE;
403
404 p->offset = offset;
405 p->rmargin = rmargin;
406 }
407
408
409 static void
410 print_mdoc_foot(struct termp *p, const void *arg)
411 {
412 const struct mdoc_meta *m;
413
414 m = (const struct mdoc_meta *)arg;
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 p->rmargin = (p->maxrmargin -
430 term_strlen(p, m->date) + term_len(p, 1)) / 2;
431 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
432
433 term_word(p, m->os);
434 term_flushln(p);
435
436 p->offset = p->rmargin;
437 p->rmargin = p->maxrmargin - term_strlen(p, m->os);
438 p->flags |= TERMP_NOSPACE;
439
440 term_word(p, m->date);
441 term_flushln(p);
442
443 p->offset = p->rmargin;
444 p->rmargin = p->maxrmargin;
445 p->flags &= ~TERMP_NOBREAK;
446 p->flags |= TERMP_NOSPACE;
447
448 term_word(p, m->os);
449 term_flushln(p);
450
451 p->offset = 0;
452 p->rmargin = p->maxrmargin;
453 p->flags = 0;
454 }
455
456
457 static void
458 print_mdoc_head(struct termp *p, const void *arg)
459 {
460 char buf[BUFSIZ], title[BUFSIZ];
461 size_t buflen, titlen;
462 const struct mdoc_meta *m;
463
464 m = (const struct mdoc_meta *)arg;
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 p->offset = 0;
480 p->rmargin = p->maxrmargin;
481
482 assert(m->vol);
483 strlcpy(buf, m->vol, BUFSIZ);
484 buflen = term_strlen(p, buf);
485
486 if (m->arch) {
487 strlcat(buf, " (", BUFSIZ);
488 strlcat(buf, m->arch, BUFSIZ);
489 strlcat(buf, ")", BUFSIZ);
490 }
491
492 snprintf(title, BUFSIZ, "%s(%s)", m->title, m->msec);
493 titlen = term_strlen(p, title);
494
495 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
496 p->offset = 0;
497 p->rmargin = 2 * (titlen+1) + buflen < p->maxrmargin ?
498 (p->maxrmargin -
499 term_strlen(p, buf) + term_len(p, 1)) / 2 :
500 p->maxrmargin - buflen;
501
502 term_word(p, title);
503 term_flushln(p);
504
505 p->flags |= TERMP_NOSPACE;
506 p->offset = p->rmargin;
507 p->rmargin = p->offset + buflen + titlen < p->maxrmargin ?
508 p->maxrmargin - titlen : p->maxrmargin;
509
510 term_word(p, buf);
511 term_flushln(p);
512
513 p->flags &= ~TERMP_NOBREAK;
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 }
526
527
528 static size_t
529 a2height(const struct termp *p, const char *v)
530 {
531 struct roffsu su;
532
533
534 assert(v);
535 if ( ! a2roffsu(v, &su, SCALE_VS))
536 SCALE_VS_INIT(&su, atoi(v));
537
538 return(term_vspan(p, &su));
539 }
540
541
542 static size_t
543 a2width(const struct termp *p, const char *v)
544 {
545 struct roffsu su;
546
547 assert(v);
548 if ( ! a2roffsu(v, &su, SCALE_MAX))
549 SCALE_HS_INIT(&su, term_strlen(p, v));
550
551 return(term_hspan(p, &su));
552 }
553
554
555 static size_t
556 a2offs(const struct termp *p, const char *v)
557 {
558 struct roffsu su;
559
560 if ('\0' == *v)
561 return(0);
562 else if (0 == strcmp(v, "left"))
563 return(0);
564 else if (0 == strcmp(v, "indent"))
565 return(term_len(p, p->defindent + 1));
566 else if (0 == strcmp(v, "indent-two"))
567 return(term_len(p, (p->defindent + 1) * 2));
568 else if ( ! a2roffsu(v, &su, SCALE_MAX))
569 SCALE_HS_INIT(&su, term_strlen(p, v));
570
571 return(term_hspan(p, &su));
572 }
573
574
575 /*
576 * Determine how much space to print out before block elements of `It'
577 * (and thus `Bl') and `Bd'. And then go ahead and print that space,
578 * too.
579 */
580 static void
581 print_bvspace(struct termp *p,
582 const struct mdoc_node *bl,
583 const struct mdoc_node *n)
584 {
585 const struct mdoc_node *nn;
586
587 assert(n);
588
589 term_newln(p);
590
591 if (MDOC_Bd == bl->tok && bl->norm->Bd.comp)
592 return;
593 if (MDOC_Bl == bl->tok && bl->norm->Bl.comp)
594 return;
595
596 /* Do not vspace directly after Ss/Sh. */
597
598 for (nn = n; nn; nn = nn->parent) {
599 if (MDOC_BLOCK != nn->type)
600 continue;
601 if (MDOC_Ss == nn->tok)
602 return;
603 if (MDOC_Sh == nn->tok)
604 return;
605 if (NULL == nn->prev)
606 continue;
607 break;
608 }
609
610 /* A `-column' does not assert vspace within the list. */
611
612 if (MDOC_Bl == bl->tok && LIST_column == bl->norm->Bl.type)
613 if (n->prev && MDOC_It == n->prev->tok)
614 return;
615
616 /* A `-diag' without body does not vspace. */
617
618 if (MDOC_Bl == bl->tok && LIST_diag == bl->norm->Bl.type)
619 if (n->prev && MDOC_It == n->prev->tok) {
620 assert(n->prev->body);
621 if (NULL == n->prev->body->child)
622 return;
623 }
624
625 term_vspace(p);
626 }
627
628
629 /* ARGSUSED */
630 static int
631 termp_it_pre(DECL_ARGS)
632 {
633 const struct mdoc_node *bl, *nn;
634 char buf[7];
635 int i;
636 size_t width, offset, ncols, dcol;
637 enum mdoc_list type;
638
639 if (MDOC_BLOCK == n->type) {
640 print_bvspace(p, n->parent->parent, n);
641 return(1);
642 }
643
644 bl = n->parent->parent->parent;
645 type = bl->norm->Bl.type;
646
647 /*
648 * First calculate width and offset. This is pretty easy unless
649 * we're a -column list, in which case all prior columns must
650 * be accounted for.
651 */
652
653 width = offset = 0;
654
655 if (bl->norm->Bl.offs)
656 offset = a2offs(p, bl->norm->Bl.offs);
657
658 switch (type) {
659 case (LIST_column):
660 if (MDOC_HEAD == n->type)
661 break;
662
663 /*
664 * Imitate groff's column handling:
665 * - For each earlier column, add its width.
666 * - For less than 5 columns, add four more blanks per
667 * column.
668 * - For exactly 5 columns, add three more blank per
669 * column.
670 * - For more than 5 columns, add only one column.
671 */
672 ncols = bl->norm->Bl.ncols;
673
674 /* LINTED */
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 MDOC_BODY,
680 * so we stop at the MDOC_HEAD (NULL == nn->prev).
681 */
682
683 for (i = 0, nn = n->prev;
684 nn->prev && i < (int)ncols;
685 nn = nn->prev, i++)
686 offset += dcol + a2width
687 (p, 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 assert(bl->norm->Bl.width);
714 width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
715 break;
716 }
717
718 /*
719 * List-type can override the width in the case of fixed-head
720 * values (bullet, dash/hyphen, enum). Tags need a non-zero
721 * offset.
722 */
723
724 switch (type) {
725 case (LIST_bullet):
726 /* FALLTHROUGH */
727 case (LIST_dash):
728 /* FALLTHROUGH */
729 case (LIST_hyphen):
730 if (width < term_len(p, 4))
731 width = term_len(p, 4);
732 break;
733 case (LIST_enum):
734 if (width < term_len(p, 5))
735 width = term_len(p, 5);
736 break;
737 case (LIST_hang):
738 if (0 == width)
739 width = term_len(p, 8);
740 break;
741 case (LIST_column):
742 /* FALLTHROUGH */
743 case (LIST_tag):
744 if (0 == width)
745 width = term_len(p, 10);
746 break;
747 default:
748 break;
749 }
750
751 /*
752 * Whitespace control. Inset bodies need an initial space,
753 * while diagonal bodies need two.
754 */
755
756 p->flags |= TERMP_NOSPACE;
757
758 switch (type) {
759 case (LIST_diag):
760 if (MDOC_BODY == n->type)
761 term_word(p, "\\ \\ ");
762 break;
763 case (LIST_inset):
764 if (MDOC_BODY == n->type)
765 term_word(p, "\\ ");
766 break;
767 default:
768 break;
769 }
770
771 p->flags |= TERMP_NOSPACE;
772
773 switch (type) {
774 case (LIST_diag):
775 if (MDOC_HEAD == n->type)
776 term_fontpush(p, TERMFONT_BOLD);
777 break;
778 default:
779 break;
780 }
781
782 /*
783 * Pad and break control. This is the tricky part. These flags
784 * are documented in term_flushln() in term.c. Note that we're
785 * going to unset all of these flags in termp_it_post() when we
786 * exit.
787 */
788
789 switch (type) {
790 case (LIST_bullet):
791 /* FALLTHROUGH */
792 case (LIST_dash):
793 /* FALLTHROUGH */
794 case (LIST_enum):
795 /* FALLTHROUGH */
796 case (LIST_hyphen):
797 if (MDOC_HEAD == n->type)
798 p->flags |= TERMP_NOBREAK;
799 break;
800 case (LIST_hang):
801 if (MDOC_HEAD == n->type)
802 p->flags |= TERMP_NOBREAK;
803 else
804 break;
805
806 /*
807 * This is ugly. If `-hang' is specified and the body
808 * is a `Bl' or `Bd', then we want basically to nullify
809 * the "overstep" effect in term_flushln() and treat
810 * this as a `-ohang' list instead.
811 */
812 if (n->next->child &&
813 (MDOC_Bl == n->next->child->tok ||
814 MDOC_Bd == n->next->child->tok))
815 p->flags &= ~TERMP_NOBREAK;
816 else
817 p->flags |= TERMP_HANG;
818 break;
819 case (LIST_tag):
820 if (MDOC_HEAD == n->type)
821 p->flags |= TERMP_NOBREAK | TERMP_TWOSPACE;
822
823 if (MDOC_HEAD != n->type)
824 break;
825 if (NULL == n->next || NULL == n->next->child)
826 p->flags |= TERMP_DANGLE;
827 break;
828 case (LIST_column):
829 if (MDOC_HEAD == n->type)
830 break;
831
832 if (NULL == n->next)
833 p->flags &= ~TERMP_NOBREAK;
834 else
835 p->flags |= TERMP_NOBREAK;
836
837 break;
838 case (LIST_diag):
839 if (MDOC_HEAD == n->type)
840 p->flags |= TERMP_NOBREAK;
841 break;
842 default:
843 break;
844 }
845
846 /*
847 * Margin control. Set-head-width lists have their right
848 * margins shortened. The body for these lists has the offset
849 * necessarily lengthened. Everybody gets the offset.
850 */
851
852 p->offset += offset;
853
854 switch (type) {
855 case (LIST_hang):
856 /*
857 * Same stipulation as above, regarding `-hang'. We
858 * don't want to recalculate rmargin and offsets when
859 * using `Bd' or `Bl' within `-hang' overstep lists.
860 */
861 if (MDOC_HEAD == n->type && n->next->child &&
862 (MDOC_Bl == n->next->child->tok ||
863 MDOC_Bd == n->next->child->tok))
864 break;
865 /* FALLTHROUGH */
866 case (LIST_bullet):
867 /* FALLTHROUGH */
868 case (LIST_dash):
869 /* FALLTHROUGH */
870 case (LIST_enum):
871 /* FALLTHROUGH */
872 case (LIST_hyphen):
873 /* FALLTHROUGH */
874 case (LIST_tag):
875 assert(width);
876 if (MDOC_HEAD == n->type)
877 p->rmargin = p->offset + width;
878 else
879 p->offset += width;
880 break;
881 case (LIST_column):
882 assert(width);
883 p->rmargin = p->offset + width;
884 /*
885 * XXX - this behaviour is not documented: the
886 * right-most column is filled to the right margin.
887 */
888 if (MDOC_HEAD == n->type)
889 break;
890 if (NULL == n->next && p->rmargin < p->maxrmargin)
891 p->rmargin = p->maxrmargin;
892 break;
893 default:
894 break;
895 }
896
897 /*
898 * The dash, hyphen, bullet and enum lists all have a special
899 * HEAD character (temporarily bold, in some cases).
900 */
901
902 if (MDOC_HEAD == n->type)
903 switch (type) {
904 case (LIST_bullet):
905 term_fontpush(p, TERMFONT_BOLD);
906 term_word(p, "\\[bu]");
907 term_fontpop(p);
908 break;
909 case (LIST_dash):
910 /* FALLTHROUGH */
911 case (LIST_hyphen):
912 term_fontpush(p, TERMFONT_BOLD);
913 term_word(p, "\\(hy");
914 term_fontpop(p);
915 break;
916 case (LIST_enum):
917 (pair->ppair->ppair->count)++;
918 snprintf(buf, sizeof(buf), "%d.",
919 pair->ppair->ppair->count);
920 term_word(p, buf);
921 break;
922 default:
923 break;
924 }
925
926 /*
927 * If we're not going to process our children, indicate so here.
928 */
929
930 switch (type) {
931 case (LIST_bullet):
932 /* FALLTHROUGH */
933 case (LIST_item):
934 /* FALLTHROUGH */
935 case (LIST_dash):
936 /* FALLTHROUGH */
937 case (LIST_hyphen):
938 /* FALLTHROUGH */
939 case (LIST_enum):
940 if (MDOC_HEAD == n->type)
941 return(0);
942 break;
943 case (LIST_column):
944 if (MDOC_HEAD == n->type)
945 return(0);
946 break;
947 default:
948 break;
949 }
950
951 return(1);
952 }
953
954
955 /* ARGSUSED */
956 static void
957 termp_it_post(DECL_ARGS)
958 {
959 enum mdoc_list type;
960
961 if (MDOC_BLOCK == n->type)
962 return;
963
964 type = n->parent->parent->parent->norm->Bl.type;
965
966 switch (type) {
967 case (LIST_item):
968 /* FALLTHROUGH */
969 case (LIST_diag):
970 /* FALLTHROUGH */
971 case (LIST_inset):
972 if (MDOC_BODY == n->type)
973 term_newln(p);
974 break;
975 case (LIST_column):
976 if (MDOC_BODY == n->type)
977 term_flushln(p);
978 break;
979 default:
980 term_newln(p);
981 break;
982 }
983
984 /*
985 * Now that our output is flushed, we can reset our tags. Since
986 * only `It' sets these flags, we're free to assume that nobody
987 * has munged them in the meanwhile.
988 */
989
990 p->flags &= ~TERMP_DANGLE;
991 p->flags &= ~TERMP_NOBREAK;
992 p->flags &= ~TERMP_TWOSPACE;
993 p->flags &= ~TERMP_HANG;
994 }
995
996
997 /* ARGSUSED */
998 static int
999 termp_nm_pre(DECL_ARGS)
1000 {
1001
1002 if (MDOC_BLOCK == n->type)
1003 return(1);
1004
1005 if (MDOC_BODY == n->type) {
1006 if (NULL == n->child)
1007 return(0);
1008 p->flags |= TERMP_NOSPACE;
1009 p->offset += term_len(p, 1) +
1010 (NULL == n->prev->child ? term_strlen(p, m->name) :
1011 MDOC_TEXT == n->prev->child->type ?
1012 term_strlen(p, n->prev->child->string) :
1013 term_len(p, 5));
1014 return(1);
1015 }
1016
1017 if (NULL == n->child && NULL == m->name)
1018 return(0);
1019
1020 if (MDOC_HEAD == n->type)
1021 synopsis_pre(p, n->parent);
1022
1023 if (MDOC_HEAD == n->type && n->next->child) {
1024 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
1025 p->rmargin = p->offset + term_len(p, 1);
1026 if (NULL == n->child) {
1027 p->rmargin += term_strlen(p, m->name);
1028 } else if (MDOC_TEXT == n->child->type) {
1029 p->rmargin += term_strlen(p, n->child->string);
1030 if (n->child->next)
1031 p->flags |= TERMP_HANG;
1032 } else {
1033 p->rmargin += term_len(p, 5);
1034 p->flags |= TERMP_HANG;
1035 }
1036 }
1037
1038 term_fontpush(p, TERMFONT_BOLD);
1039 if (NULL == n->child)
1040 term_word(p, m->name);
1041 return(1);
1042 }
1043
1044
1045 /* ARGSUSED */
1046 static void
1047 termp_nm_post(DECL_ARGS)
1048 {
1049
1050 if (MDOC_HEAD == n->type && n->next->child) {
1051 term_flushln(p);
1052 p->flags &= ~(TERMP_NOBREAK | TERMP_HANG);
1053 } else if (MDOC_BODY == n->type && n->child)
1054 term_flushln(p);
1055 }
1056
1057
1058 /* ARGSUSED */
1059 static int
1060 termp_fl_pre(DECL_ARGS)
1061 {
1062
1063 term_fontpush(p, TERMFONT_BOLD);
1064 term_word(p, "\\-");
1065
1066 if (n->child)
1067 p->flags |= TERMP_NOSPACE;
1068 else if (n->next && n->next->line == n->line)
1069 p->flags |= TERMP_NOSPACE;
1070
1071 return(1);
1072 }
1073
1074
1075 /* ARGSUSED */
1076 static int
1077 termp__a_pre(DECL_ARGS)
1078 {
1079
1080 if (n->prev && MDOC__A == n->prev->tok)
1081 if (NULL == n->next || MDOC__A != n->next->tok)
1082 term_word(p, "and");
1083
1084 return(1);
1085 }
1086
1087
1088 /* ARGSUSED */
1089 static int
1090 termp_an_pre(DECL_ARGS)
1091 {
1092
1093 if (NULL == n->child)
1094 return(1);
1095
1096 /*
1097 * If not in the AUTHORS section, `An -split' will cause
1098 * newlines to occur before the author name. If in the AUTHORS
1099 * section, by default, the first `An' invocation is nosplit,
1100 * then all subsequent ones, regardless of whether interspersed
1101 * with other macros/text, are split. -split, in this case,
1102 * will override the condition of the implied first -nosplit.
1103 */
1104
1105 if (n->sec == SEC_AUTHORS) {
1106 if ( ! (TERMP_ANPREC & p->flags)) {
1107 if (TERMP_SPLIT & p->flags)
1108 term_newln(p);
1109 return(1);
1110 }
1111 if (TERMP_NOSPLIT & p->flags)
1112 return(1);
1113 term_newln(p);
1114 return(1);
1115 }
1116
1117 if (TERMP_SPLIT & p->flags)
1118 term_newln(p);
1119
1120 return(1);
1121 }
1122
1123
1124 /* ARGSUSED */
1125 static void
1126 termp_an_post(DECL_ARGS)
1127 {
1128
1129 if (n->child) {
1130 if (SEC_AUTHORS == n->sec)
1131 p->flags |= TERMP_ANPREC;
1132 return;
1133 }
1134
1135 if (AUTH_split == n->norm->An.auth) {
1136 p->flags &= ~TERMP_NOSPLIT;
1137 p->flags |= TERMP_SPLIT;
1138 } else if (AUTH_nosplit == n->norm->An.auth) {
1139 p->flags &= ~TERMP_SPLIT;
1140 p->flags |= TERMP_NOSPLIT;
1141 }
1142
1143 }
1144
1145
1146 /* ARGSUSED */
1147 static int
1148 termp_ns_pre(DECL_ARGS)
1149 {
1150
1151 if ( ! (MDOC_LINE & n->flags))
1152 p->flags |= TERMP_NOSPACE;
1153 return(1);
1154 }
1155
1156
1157 /* ARGSUSED */
1158 static int
1159 termp_rs_pre(DECL_ARGS)
1160 {
1161
1162 if (SEC_SEE_ALSO != n->sec)
1163 return(1);
1164 if (MDOC_BLOCK == n->type && n->prev)
1165 term_vspace(p);
1166 return(1);
1167 }
1168
1169
1170 /* ARGSUSED */
1171 static int
1172 termp_rv_pre(DECL_ARGS)
1173 {
1174 int nchild;
1175
1176 term_newln(p);
1177 term_word(p, "The");
1178
1179 nchild = n->nchild;
1180 for (n = n->child; n; n = n->next) {
1181 term_fontpush(p, TERMFONT_BOLD);
1182 term_word(p, n->string);
1183 term_fontpop(p);
1184
1185 p->flags |= TERMP_NOSPACE;
1186 term_word(p, "()");
1187
1188 if (nchild > 2 && n->next) {
1189 p->flags |= TERMP_NOSPACE;
1190 term_word(p, ",");
1191 }
1192
1193 if (n->next && NULL == n->next->next)
1194 term_word(p, "and");
1195 }
1196
1197 if (nchild > 1)
1198 term_word(p, "functions return");
1199 else
1200 term_word(p, "function returns");
1201
1202 term_word(p, "the value 0 if successful; otherwise the value "
1203 "-1 is returned and the global variable");
1204
1205 term_fontpush(p, TERMFONT_UNDER);
1206 term_word(p, "errno");
1207 term_fontpop(p);
1208
1209 term_word(p, "is set to indicate the error.");
1210 p->flags |= TERMP_SENTENCE;
1211
1212 return(0);
1213 }
1214
1215
1216 /* ARGSUSED */
1217 static int
1218 termp_ex_pre(DECL_ARGS)
1219 {
1220 int nchild;
1221
1222 term_newln(p);
1223 term_word(p, "The");
1224
1225 nchild = n->nchild;
1226 for (n = n->child; n; n = n->next) {
1227 term_fontpush(p, TERMFONT_BOLD);
1228 term_word(p, n->string);
1229 term_fontpop(p);
1230
1231 if (nchild > 2 && n->next) {
1232 p->flags |= TERMP_NOSPACE;
1233 term_word(p, ",");
1234 }
1235
1236 if (n->next && NULL == n->next->next)
1237 term_word(p, "and");
1238 }
1239
1240 if (nchild > 1)
1241 term_word(p, "utilities exit");
1242 else
1243 term_word(p, "utility exits");
1244
1245 term_word(p, "0 on success, and >0 if an error occurs.");
1246
1247 p->flags |= TERMP_SENTENCE;
1248 return(0);
1249 }
1250
1251
1252 /* ARGSUSED */
1253 static int
1254 termp_nd_pre(DECL_ARGS)
1255 {
1256
1257 if (MDOC_BODY != n->type)
1258 return(1);
1259
1260 #if defined(__OpenBSD__) || defined(__linux__)
1261 term_word(p, "\\(en");
1262 #else
1263 term_word(p, "\\(em");
1264 #endif
1265 return(1);
1266 }
1267
1268
1269 /* ARGSUSED */
1270 static int
1271 termp_bl_pre(DECL_ARGS)
1272 {
1273
1274 return(MDOC_HEAD != n->type);
1275 }
1276
1277
1278 /* ARGSUSED */
1279 static void
1280 termp_bl_post(DECL_ARGS)
1281 {
1282
1283 if (MDOC_BLOCK == n->type)
1284 term_newln(p);
1285 }
1286
1287 /* ARGSUSED */
1288 static int
1289 termp_xr_pre(DECL_ARGS)
1290 {
1291
1292 if (NULL == (n = n->child))
1293 return(0);
1294
1295 assert(MDOC_TEXT == n->type);
1296 term_word(p, n->string);
1297
1298 if (NULL == (n = n->next))
1299 return(0);
1300
1301 p->flags |= TERMP_NOSPACE;
1302 term_word(p, "(");
1303 p->flags |= TERMP_NOSPACE;
1304
1305 assert(MDOC_TEXT == n->type);
1306 term_word(p, n->string);
1307
1308 p->flags |= TERMP_NOSPACE;
1309 term_word(p, ")");
1310
1311 return(0);
1312 }
1313
1314 /*
1315 * This decides how to assert whitespace before any of the SYNOPSIS set
1316 * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
1317 * macro combos).
1318 */
1319 static void
1320 synopsis_pre(struct termp *p, const struct mdoc_node *n)
1321 {
1322 /*
1323 * Obviously, if we're not in a SYNOPSIS or no prior macros
1324 * exist, do nothing.
1325 */
1326 if (NULL == n->prev || ! (MDOC_SYNPRETTY & n->flags))
1327 return;
1328
1329 /*
1330 * If we're the second in a pair of like elements, emit our
1331 * newline and return. UNLESS we're `Fo', `Fn', `Fn', in which
1332 * case we soldier on.
1333 */
1334 if (n->prev->tok == n->tok &&
1335 MDOC_Ft != n->tok &&
1336 MDOC_Fo != n->tok &&
1337 MDOC_Fn != n->tok) {
1338 term_newln(p);
1339 return;
1340 }
1341
1342 /*
1343 * If we're one of the SYNOPSIS set and non-like pair-wise after
1344 * another (or Fn/Fo, which we've let slip through) then assert
1345 * vertical space, else only newline and move on.
1346 */
1347 switch (n->prev->tok) {
1348 case (MDOC_Fd):
1349 /* FALLTHROUGH */
1350 case (MDOC_Fn):
1351 /* FALLTHROUGH */
1352 case (MDOC_Fo):
1353 /* FALLTHROUGH */
1354 case (MDOC_In):
1355 /* FALLTHROUGH */
1356 case (MDOC_Vt):
1357 term_vspace(p);
1358 break;
1359 case (MDOC_Ft):
1360 if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
1361 term_vspace(p);
1362 break;
1363 }
1364 /* FALLTHROUGH */
1365 default:
1366 term_newln(p);
1367 break;
1368 }
1369 }
1370
1371
1372 static int
1373 termp_vt_pre(DECL_ARGS)
1374 {
1375
1376 if (MDOC_ELEM == n->type) {
1377 synopsis_pre(p, n);
1378 return(termp_under_pre(p, pair, m, n));
1379 } else if (MDOC_BLOCK == n->type) {
1380 synopsis_pre(p, n);
1381 return(1);
1382 } else if (MDOC_HEAD == n->type)
1383 return(0);
1384
1385 return(termp_under_pre(p, pair, m, n));
1386 }
1387
1388
1389 /* ARGSUSED */
1390 static int
1391 termp_bold_pre(DECL_ARGS)
1392 {
1393
1394 term_fontpush(p, TERMFONT_BOLD);
1395 return(1);
1396 }
1397
1398
1399 /* ARGSUSED */
1400 static int
1401 termp_fd_pre(DECL_ARGS)
1402 {
1403
1404 synopsis_pre(p, n);
1405 return(termp_bold_pre(p, pair, m, n));
1406 }
1407
1408
1409 /* ARGSUSED */
1410 static int
1411 termp_sh_pre(DECL_ARGS)
1412 {
1413
1414 /* No vspace between consecutive `Sh' calls. */
1415
1416 switch (n->type) {
1417 case (MDOC_BLOCK):
1418 if (n->prev && MDOC_Sh == n->prev->tok)
1419 if (NULL == n->prev->body->child)
1420 break;
1421 term_vspace(p);
1422 break;
1423 case (MDOC_HEAD):
1424 term_fontpush(p, TERMFONT_BOLD);
1425 break;
1426 case (MDOC_BODY):
1427 p->offset = term_len(p, p->defindent);
1428 break;
1429 default:
1430 break;
1431 }
1432 return(1);
1433 }
1434
1435
1436 /* ARGSUSED */
1437 static void
1438 termp_sh_post(DECL_ARGS)
1439 {
1440
1441 switch (n->type) {
1442 case (MDOC_HEAD):
1443 term_newln(p);
1444 break;
1445 case (MDOC_BODY):
1446 term_newln(p);
1447 p->offset = 0;
1448 break;
1449 default:
1450 break;
1451 }
1452 }
1453
1454
1455 /* ARGSUSED */
1456 static int
1457 termp_bt_pre(DECL_ARGS)
1458 {
1459
1460 term_word(p, "is currently in beta test.");
1461 p->flags |= TERMP_SENTENCE;
1462 return(0);
1463 }
1464
1465
1466 /* ARGSUSED */
1467 static void
1468 termp_lb_post(DECL_ARGS)
1469 {
1470
1471 if (SEC_LIBRARY == n->sec && MDOC_LINE & n->flags)
1472 term_newln(p);
1473 }
1474
1475
1476 /* ARGSUSED */
1477 static int
1478 termp_ud_pre(DECL_ARGS)
1479 {
1480
1481 term_word(p, "currently under development.");
1482 p->flags |= TERMP_SENTENCE;
1483 return(0);
1484 }
1485
1486
1487 /* ARGSUSED */
1488 static int
1489 termp_d1_pre(DECL_ARGS)
1490 {
1491
1492 if (MDOC_BLOCK != n->type)
1493 return(1);
1494 term_newln(p);
1495 p->offset += term_len(p, p->defindent + 1);
1496 return(1);
1497 }
1498
1499
1500 /* ARGSUSED */
1501 static void
1502 termp_d1_post(DECL_ARGS)
1503 {
1504
1505 if (MDOC_BLOCK != n->type)
1506 return;
1507 term_newln(p);
1508 }
1509
1510
1511 /* ARGSUSED */
1512 static int
1513 termp_ft_pre(DECL_ARGS)
1514 {
1515
1516 /* NB: MDOC_LINE does not effect this! */
1517 synopsis_pre(p, n);
1518 term_fontpush(p, TERMFONT_UNDER);
1519 return(1);
1520 }
1521
1522
1523 /* ARGSUSED */
1524 static int
1525 termp_fn_pre(DECL_ARGS)
1526 {
1527 int pretty;
1528
1529 pretty = MDOC_SYNPRETTY & n->flags;
1530
1531 synopsis_pre(p, n);
1532
1533 if (NULL == (n = n->child))
1534 return(0);
1535
1536 assert(MDOC_TEXT == n->type);
1537 term_fontpush(p, TERMFONT_BOLD);
1538 term_word(p, n->string);
1539 term_fontpop(p);
1540
1541 p->flags |= TERMP_NOSPACE;
1542 term_word(p, "(");
1543 p->flags |= TERMP_NOSPACE;
1544
1545 for (n = n->next; n; n = n->next) {
1546 assert(MDOC_TEXT == n->type);
1547 term_fontpush(p, TERMFONT_UNDER);
1548 term_word(p, n->string);
1549 term_fontpop(p);
1550
1551 if (n->next) {
1552 p->flags |= TERMP_NOSPACE;
1553 term_word(p, ",");
1554 }
1555 }
1556
1557 p->flags |= TERMP_NOSPACE;
1558 term_word(p, ")");
1559
1560 if (pretty) {
1561 p->flags |= TERMP_NOSPACE;
1562 term_word(p, ";");
1563 }
1564
1565 return(0);
1566 }
1567
1568
1569 /* ARGSUSED */
1570 static int
1571 termp_fa_pre(DECL_ARGS)
1572 {
1573 const struct mdoc_node *nn;
1574
1575 if (n->parent->tok != MDOC_Fo) {
1576 term_fontpush(p, TERMFONT_UNDER);
1577 return(1);
1578 }
1579
1580 for (nn = n->child; nn; nn = nn->next) {
1581 term_fontpush(p, TERMFONT_UNDER);
1582 term_word(p, nn->string);
1583 term_fontpop(p);
1584
1585 if (nn->next) {
1586 p->flags |= TERMP_NOSPACE;
1587 term_word(p, ",");
1588 }
1589 }
1590
1591 if (n->child && n->next && n->next->tok == MDOC_Fa) {
1592 p->flags |= TERMP_NOSPACE;
1593 term_word(p, ",");
1594 }
1595
1596 return(0);
1597 }
1598
1599
1600 /* ARGSUSED */
1601 static int
1602 termp_bd_pre(DECL_ARGS)
1603 {
1604 size_t tabwidth, rm, rmax;
1605 const struct mdoc_node *nn;
1606
1607 if (MDOC_BLOCK == n->type) {
1608 print_bvspace(p, n, n);
1609 return(1);
1610 } else if (MDOC_HEAD == n->type)
1611 return(0);
1612
1613 if (n->norm->Bd.offs)
1614 p->offset += a2offs(p, n->norm->Bd.offs);
1615
1616 /*
1617 * If -ragged or -filled are specified, the block does nothing
1618 * but change the indentation. If -unfilled or -literal are
1619 * specified, text is printed exactly as entered in the display:
1620 * for macro lines, a newline is appended to the line. Blank
1621 * lines are allowed.
1622 */
1623
1624 if (DISP_literal != n->norm->Bd.type &&
1625 DISP_unfilled != n->norm->Bd.type)
1626 return(1);
1627
1628 tabwidth = p->tabwidth;
1629 if (DISP_literal == n->norm->Bd.type)
1630 p->tabwidth = term_len(p, 8);
1631
1632 rm = p->rmargin;
1633 rmax = p->maxrmargin;
1634 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1635
1636 for (nn = n->child; nn; nn = nn->next) {
1637 print_mdoc_node(p, pair, m, nn);
1638 /*
1639 * If the printed node flushes its own line, then we
1640 * needn't do it here as well. This is hacky, but the
1641 * notion of selective eoln whitespace is pretty dumb
1642 * anyway, so don't sweat it.
1643 */
1644 switch (nn->tok) {
1645 case (MDOC_Sm):
1646 /* FALLTHROUGH */
1647 case (MDOC_br):
1648 /* FALLTHROUGH */
1649 case (MDOC_sp):
1650 /* FALLTHROUGH */
1651 case (MDOC_Bl):
1652 /* FALLTHROUGH */
1653 case (MDOC_D1):
1654 /* FALLTHROUGH */
1655 case (MDOC_Dl):
1656 /* FALLTHROUGH */
1657 case (MDOC_Lp):
1658 /* FALLTHROUGH */
1659 case (MDOC_Pp):
1660 continue;
1661 default:
1662 break;
1663 }
1664 if (nn->next && nn->next->line == nn->line)
1665 continue;
1666 term_flushln(p);
1667 p->flags |= TERMP_NOSPACE;
1668 }
1669
1670 p->tabwidth = tabwidth;
1671 p->rmargin = rm;
1672 p->maxrmargin = rmax;
1673 return(0);
1674 }
1675
1676
1677 /* ARGSUSED */
1678 static void
1679 termp_bd_post(DECL_ARGS)
1680 {
1681 size_t rm, rmax;
1682
1683 if (MDOC_BODY != n->type)
1684 return;
1685
1686 rm = p->rmargin;
1687 rmax = p->maxrmargin;
1688
1689 if (DISP_literal == n->norm->Bd.type ||
1690 DISP_unfilled == n->norm->Bd.type)
1691 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1692
1693 p->flags |= TERMP_NOSPACE;
1694 term_newln(p);
1695
1696 p->rmargin = rm;
1697 p->maxrmargin = rmax;
1698 }
1699
1700
1701 /* ARGSUSED */
1702 static int
1703 termp_bx_pre(DECL_ARGS)
1704 {
1705
1706 if (NULL != (n = n->child)) {
1707 term_word(p, n->string);
1708 p->flags |= TERMP_NOSPACE;
1709 term_word(p, "BSD");
1710 } else {
1711 term_word(p, "BSD");
1712 return(0);
1713 }
1714
1715 if (NULL != (n = n->next)) {
1716 p->flags |= TERMP_NOSPACE;
1717 term_word(p, "-");
1718 p->flags |= TERMP_NOSPACE;
1719 term_word(p, n->string);
1720 }
1721
1722 return(0);
1723 }
1724
1725
1726 /* ARGSUSED */
1727 static int
1728 termp_xx_pre(DECL_ARGS)
1729 {
1730 const char *pp;
1731 int flags;
1732
1733 pp = NULL;
1734 switch (n->tok) {
1735 case (MDOC_Bsx):
1736 pp = "BSD/OS";
1737 break;
1738 case (MDOC_Dx):
1739 pp = "DragonFly";
1740 break;
1741 case (MDOC_Fx):
1742 pp = "FreeBSD";
1743 break;
1744 case (MDOC_Nx):
1745 pp = "NetBSD";
1746 break;
1747 case (MDOC_Ox):
1748 pp = "OpenBSD";
1749 break;
1750 case (MDOC_Ux):
1751 pp = "UNIX";
1752 break;
1753 default:
1754 break;
1755 }
1756
1757 term_word(p, pp);
1758 if (n->child) {
1759 flags = p->flags;
1760 p->flags |= TERMP_KEEP;
1761 term_word(p, n->child->string);
1762 p->flags = flags;
1763 }
1764 return(0);
1765 }
1766
1767
1768 /* ARGSUSED */
1769 static int
1770 termp_igndelim_pre(DECL_ARGS)
1771 {
1772
1773 p->flags |= TERMP_IGNDELIM;
1774 return(1);
1775 }
1776
1777
1778 /* ARGSUSED */
1779 static void
1780 termp_pf_post(DECL_ARGS)
1781 {
1782
1783 p->flags |= TERMP_NOSPACE;
1784 }
1785
1786
1787 /* ARGSUSED */
1788 static int
1789 termp_ss_pre(DECL_ARGS)
1790 {
1791
1792 switch (n->type) {
1793 case (MDOC_BLOCK):
1794 term_newln(p);
1795 if (n->prev)
1796 term_vspace(p);
1797 break;
1798 case (MDOC_HEAD):
1799 term_fontpush(p, TERMFONT_BOLD);
1800 p->offset = term_len(p, (p->defindent+1)/2);
1801 break;
1802 default:
1803 break;
1804 }
1805
1806 return(1);
1807 }
1808
1809
1810 /* ARGSUSED */
1811 static void
1812 termp_ss_post(DECL_ARGS)
1813 {
1814
1815 if (MDOC_HEAD == n->type)
1816 term_newln(p);
1817 }
1818
1819
1820 /* ARGSUSED */
1821 static int
1822 termp_cd_pre(DECL_ARGS)
1823 {
1824
1825 synopsis_pre(p, n);
1826 term_fontpush(p, TERMFONT_BOLD);
1827 return(1);
1828 }
1829
1830
1831 /* ARGSUSED */
1832 static int
1833 termp_in_pre(DECL_ARGS)
1834 {
1835
1836 synopsis_pre(p, n);
1837
1838 if (MDOC_SYNPRETTY & n->flags && MDOC_LINE & n->flags) {
1839 term_fontpush(p, TERMFONT_BOLD);
1840 term_word(p, "#include");
1841 term_word(p, "<");
1842 } else {
1843 term_word(p, "<");
1844 term_fontpush(p, TERMFONT_UNDER);
1845 }
1846
1847 p->flags |= TERMP_NOSPACE;
1848 return(1);
1849 }
1850
1851
1852 /* ARGSUSED */
1853 static void
1854 termp_in_post(DECL_ARGS)
1855 {
1856
1857 if (MDOC_SYNPRETTY & n->flags)
1858 term_fontpush(p, TERMFONT_BOLD);
1859
1860 p->flags |= TERMP_NOSPACE;
1861 term_word(p, ">");
1862
1863 if (MDOC_SYNPRETTY & n->flags)
1864 term_fontpop(p);
1865 }
1866
1867
1868 /* ARGSUSED */
1869 static int
1870 termp_sp_pre(DECL_ARGS)
1871 {
1872 size_t i, len;
1873
1874 switch (n->tok) {
1875 case (MDOC_sp):
1876 len = n->child ? a2height(p, n->child->string) : 1;
1877 break;
1878 case (MDOC_br):
1879 len = 0;
1880 break;
1881 default:
1882 len = 1;
1883 break;
1884 }
1885
1886 if (0 == len)
1887 term_newln(p);
1888 for (i = 0; i < len; i++)
1889 term_vspace(p);
1890
1891 return(0);
1892 }
1893
1894
1895 /* ARGSUSED */
1896 static int
1897 termp_quote_pre(DECL_ARGS)
1898 {
1899
1900 if (MDOC_BODY != n->type && MDOC_ELEM != n->type)
1901 return(1);
1902
1903 switch (n->tok) {
1904 case (MDOC_Ao):
1905 /* FALLTHROUGH */
1906 case (MDOC_Aq):
1907 term_word(p, "<");
1908 break;
1909 case (MDOC_Bro):
1910 /* FALLTHROUGH */
1911 case (MDOC_Brq):
1912 term_word(p, "{");
1913 break;
1914 case (MDOC_Oo):
1915 /* FALLTHROUGH */
1916 case (MDOC_Op):
1917 /* FALLTHROUGH */
1918 case (MDOC_Bo):
1919 /* FALLTHROUGH */
1920 case (MDOC_Bq):
1921 term_word(p, "[");
1922 break;
1923 case (MDOC_Do):
1924 /* FALLTHROUGH */
1925 case (MDOC_Dq):
1926 term_word(p, "``");
1927 break;
1928 case (MDOC_Eo):
1929 break;
1930 case (MDOC_Po):
1931 /* FALLTHROUGH */
1932 case (MDOC_Pq):
1933 term_word(p, "(");
1934 break;
1935 case (MDOC__T):
1936 /* FALLTHROUGH */
1937 case (MDOC_Qo):
1938 /* FALLTHROUGH */
1939 case (MDOC_Qq):
1940 term_word(p, "\"");
1941 break;
1942 case (MDOC_Ql):
1943 /* FALLTHROUGH */
1944 case (MDOC_So):
1945 /* FALLTHROUGH */
1946 case (MDOC_Sq):
1947 term_word(p, "`");
1948 break;
1949 default:
1950 abort();
1951 /* NOTREACHED */
1952 }
1953
1954 p->flags |= TERMP_NOSPACE;
1955 return(1);
1956 }
1957
1958
1959 /* ARGSUSED */
1960 static void
1961 termp_quote_post(DECL_ARGS)
1962 {
1963
1964 if (MDOC_BODY != n->type && MDOC_ELEM != n->type)
1965 return;
1966
1967 p->flags |= TERMP_NOSPACE;
1968
1969 switch (n->tok) {
1970 case (MDOC_Ao):
1971 /* FALLTHROUGH */
1972 case (MDOC_Aq):
1973 term_word(p, ">");
1974 break;
1975 case (MDOC_Bro):
1976 /* FALLTHROUGH */
1977 case (MDOC_Brq):
1978 term_word(p, "}");
1979 break;
1980 case (MDOC_Oo):
1981 /* FALLTHROUGH */
1982 case (MDOC_Op):
1983 /* FALLTHROUGH */
1984 case (MDOC_Bo):
1985 /* FALLTHROUGH */
1986 case (MDOC_Bq):
1987 term_word(p, "]");
1988 break;
1989 case (MDOC_Do):
1990 /* FALLTHROUGH */
1991 case (MDOC_Dq):
1992 term_word(p, "''");
1993 break;
1994 case (MDOC_Eo):
1995 break;
1996 case (MDOC_Po):
1997 /* FALLTHROUGH */
1998 case (MDOC_Pq):
1999 term_word(p, ")");
2000 break;
2001 case (MDOC__T):
2002 /* FALLTHROUGH */
2003 case (MDOC_Qo):
2004 /* FALLTHROUGH */
2005 case (MDOC_Qq):
2006 term_word(p, "\"");
2007 break;
2008 case (MDOC_Ql):
2009 /* FALLTHROUGH */
2010 case (MDOC_So):
2011 /* FALLTHROUGH */
2012 case (MDOC_Sq):
2013 term_word(p, "'");
2014 break;
2015 default:
2016 abort();
2017 /* NOTREACHED */
2018 }
2019 }
2020
2021
2022 /* ARGSUSED */
2023 static int
2024 termp_fo_pre(DECL_ARGS)
2025 {
2026
2027 if (MDOC_BLOCK == n->type) {
2028 synopsis_pre(p, n);
2029 return(1);
2030 } else if (MDOC_BODY == n->type) {
2031 p->flags |= TERMP_NOSPACE;
2032 term_word(p, "(");
2033 p->flags |= TERMP_NOSPACE;
2034 return(1);
2035 }
2036
2037 if (NULL == n->child)
2038 return(0);
2039
2040 /* XXX: we drop non-initial arguments as per groff. */
2041
2042 assert(n->child->string);
2043 term_fontpush(p, TERMFONT_BOLD);
2044 term_word(p, n->child->string);
2045 return(0);
2046 }
2047
2048
2049 /* ARGSUSED */
2050 static void
2051 termp_fo_post(DECL_ARGS)
2052 {
2053
2054 if (MDOC_BODY != n->type)
2055 return;
2056
2057 p->flags |= TERMP_NOSPACE;
2058 term_word(p, ")");
2059
2060 if (MDOC_SYNPRETTY & n->flags) {
2061 p->flags |= TERMP_NOSPACE;
2062 term_word(p, ";");
2063 }
2064 }
2065
2066
2067 /* ARGSUSED */
2068 static int
2069 termp_bf_pre(DECL_ARGS)
2070 {
2071
2072 if (MDOC_HEAD == n->type)
2073 return(0);
2074 else if (MDOC_BLOCK != n->type)
2075 return(1);
2076
2077 if (FONT_Em == n->norm->Bf.font)
2078 term_fontpush(p, TERMFONT_UNDER);
2079 else if (FONT_Sy == n->norm->Bf.font)
2080 term_fontpush(p, TERMFONT_BOLD);
2081 else
2082 term_fontpush(p, TERMFONT_NONE);
2083
2084 return(1);
2085 }
2086
2087
2088 /* ARGSUSED */
2089 static int
2090 termp_sm_pre(DECL_ARGS)
2091 {
2092
2093 assert(n->child && MDOC_TEXT == n->child->type);
2094 if (0 == strcmp("on", n->child->string)) {
2095 if (p->col)
2096 p->flags &= ~TERMP_NOSPACE;
2097 p->flags &= ~TERMP_NONOSPACE;
2098 } else
2099 p->flags |= TERMP_NONOSPACE;
2100
2101 return(0);
2102 }
2103
2104
2105 /* ARGSUSED */
2106 static int
2107 termp_ap_pre(DECL_ARGS)
2108 {
2109
2110 p->flags |= TERMP_NOSPACE;
2111 term_word(p, "'");
2112 p->flags |= TERMP_NOSPACE;
2113 return(1);
2114 }
2115
2116
2117 /* ARGSUSED */
2118 static void
2119 termp____post(DECL_ARGS)
2120 {
2121
2122 /*
2123 * Handle lists of authors. In general, print each followed by
2124 * a comma. Don't print the comma if there are only two
2125 * authors.
2126 */
2127 if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
2128 if (NULL == n->next->next || MDOC__A != n->next->next->tok)
2129 if (NULL == n->prev || MDOC__A != n->prev->tok)
2130 return;
2131
2132 /* TODO: %U. */
2133
2134 if (NULL == n->parent || MDOC_Rs != n->parent->tok)
2135 return;
2136
2137 p->flags |= TERMP_NOSPACE;
2138 if (NULL == n->next) {
2139 term_word(p, ".");
2140 p->flags |= TERMP_SENTENCE;
2141 } else
2142 term_word(p, ",");
2143 }
2144
2145
2146 /* ARGSUSED */
2147 static int
2148 termp_li_pre(DECL_ARGS)
2149 {
2150
2151 term_fontpush(p, TERMFONT_NONE);
2152 return(1);
2153 }
2154
2155
2156 /* ARGSUSED */
2157 static int
2158 termp_lk_pre(DECL_ARGS)
2159 {
2160 const struct mdoc_node *nn, *sv;
2161
2162 term_fontpush(p, TERMFONT_UNDER);
2163
2164 nn = sv = n->child;
2165
2166 if (NULL == nn || NULL == nn->next)
2167 return(1);
2168
2169 for (nn = nn->next; nn; nn = nn->next)
2170 term_word(p, nn->string);
2171
2172 term_fontpop(p);
2173
2174 p->flags |= TERMP_NOSPACE;
2175 term_word(p, ":");
2176
2177 term_fontpush(p, TERMFONT_BOLD);
2178 term_word(p, sv->string);
2179 term_fontpop(p);
2180
2181 return(0);
2182 }
2183
2184
2185 /* ARGSUSED */
2186 static int
2187 termp_bk_pre(DECL_ARGS)
2188 {
2189
2190 switch (n->type) {
2191 case (MDOC_BLOCK):
2192 break;
2193 case (MDOC_HEAD):
2194 return(0);
2195 case (MDOC_BODY):
2196 if (n->parent->args || 0 == n->prev->nchild)
2197 p->flags |= TERMP_PREKEEP;
2198 break;
2199 default:
2200 abort();
2201 /* NOTREACHED */
2202 }
2203
2204 return(1);
2205 }
2206
2207
2208 /* ARGSUSED */
2209 static void
2210 termp_bk_post(DECL_ARGS)
2211 {
2212
2213 if (MDOC_BODY == n->type)
2214 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
2215 }
2216
2217 /* ARGSUSED */
2218 static void
2219 termp__t_post(DECL_ARGS)
2220 {
2221
2222 /*
2223 * If we're in an `Rs' and there's a journal present, then quote
2224 * us instead of underlining us (for disambiguation).
2225 */
2226 if (n->parent && MDOC_Rs == n->parent->tok &&
2227 n->parent->norm->Rs.quote_T)
2228 termp_quote_post(p, pair, m, n);
2229
2230 termp____post(p, pair, m, n);
2231 }
2232
2233 /* ARGSUSED */
2234 static int
2235 termp__t_pre(DECL_ARGS)
2236 {
2237
2238 /*
2239 * If we're in an `Rs' and there's a journal present, then quote
2240 * us instead of underlining us (for disambiguation).
2241 */
2242 if (n->parent && MDOC_Rs == n->parent->tok &&
2243 n->parent->norm->Rs.quote_T)
2244 return(termp_quote_pre(p, pair, m, n));
2245
2246 term_fontpush(p, TERMFONT_UNDER);
2247 return(1);
2248 }
2249
2250 /* ARGSUSED */
2251 static int
2252 termp_under_pre(DECL_ARGS)
2253 {
2254
2255 term_fontpush(p, TERMFONT_UNDER);
2256 return(1);
2257 }
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