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[mandoc.git] / mdoc_term.c
1 /* $Id: mdoc_term.c,v 1.380 2020/04/06 10:16:17 schwarze Exp $ */
2 /*
3 * Copyright (c) 2010, 2012-2020 Ingo Schwarze <schwarze@openbsd.org>
4 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
5 * Copyright (c) 2013 Franco Fichtner <franco@lastsummer.de>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 *
19 * Plain text formatter for mdoc(7), used by mandoc(1)
20 * for ASCII, UTF-8, PostScript, and PDF output.
21 */
22 #include "config.h"
23
24 #include <sys/types.h>
25
26 #include <assert.h>
27 #include <ctype.h>
28 #include <limits.h>
29 #include <stdint.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33
34 #include "mandoc_aux.h"
35 #include "roff.h"
36 #include "mdoc.h"
37 #include "out.h"
38 #include "term.h"
39 #include "term_tag.h"
40 #include "main.h"
41
42 struct termpair {
43 struct termpair *ppair;
44 int count;
45 };
46
47 #define DECL_ARGS struct termp *p, \
48 struct termpair *pair, \
49 const struct roff_meta *meta, \
50 struct roff_node *n
51
52 struct mdoc_term_act {
53 int (*pre)(DECL_ARGS);
54 void (*post)(DECL_ARGS);
55 };
56
57 static int a2width(const struct termp *, const char *);
58
59 static void print_bvspace(struct termp *,
60 struct roff_node *, struct roff_node *);
61 static void print_mdoc_node(DECL_ARGS);
62 static void print_mdoc_nodelist(DECL_ARGS);
63 static void print_mdoc_head(struct termp *, const struct roff_meta *);
64 static void print_mdoc_foot(struct termp *, const struct roff_meta *);
65 static void synopsis_pre(struct termp *, struct roff_node *);
66
67 static void termp____post(DECL_ARGS);
68 static void termp__t_post(DECL_ARGS);
69 static void termp_bd_post(DECL_ARGS);
70 static void termp_bk_post(DECL_ARGS);
71 static void termp_bl_post(DECL_ARGS);
72 static void termp_eo_post(DECL_ARGS);
73 static void termp_fd_post(DECL_ARGS);
74 static void termp_fo_post(DECL_ARGS);
75 static void termp_in_post(DECL_ARGS);
76 static void termp_it_post(DECL_ARGS);
77 static void termp_lb_post(DECL_ARGS);
78 static void termp_nm_post(DECL_ARGS);
79 static void termp_pf_post(DECL_ARGS);
80 static void termp_quote_post(DECL_ARGS);
81 static void termp_sh_post(DECL_ARGS);
82 static void termp_ss_post(DECL_ARGS);
83 static void termp_xx_post(DECL_ARGS);
84
85 static int termp__a_pre(DECL_ARGS);
86 static int termp__t_pre(DECL_ARGS);
87 static int termp_abort_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_d1_pre(DECL_ARGS);
96 static int termp_eo_pre(DECL_ARGS);
97 static int termp_ex_pre(DECL_ARGS);
98 static int termp_fa_pre(DECL_ARGS);
99 static int termp_fd_pre(DECL_ARGS);
100 static int termp_fl_pre(DECL_ARGS);
101 static int termp_fn_pre(DECL_ARGS);
102 static int termp_fo_pre(DECL_ARGS);
103 static int termp_ft_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_sh_pre(DECL_ARGS);
114 static int termp_skip_pre(DECL_ARGS);
115 static int termp_sm_pre(DECL_ARGS);
116 static int termp_pp_pre(DECL_ARGS);
117 static int termp_ss_pre(DECL_ARGS);
118 static int termp_under_pre(DECL_ARGS);
119 static int termp_vt_pre(DECL_ARGS);
120 static int termp_xr_pre(DECL_ARGS);
121 static int termp_xx_pre(DECL_ARGS);
122
123 static const struct mdoc_term_act mdoc_term_acts[MDOC_MAX - MDOC_Dd] = {
124 { NULL, NULL }, /* Dd */
125 { NULL, NULL }, /* Dt */
126 { NULL, NULL }, /* Os */
127 { termp_sh_pre, termp_sh_post }, /* Sh */
128 { termp_ss_pre, termp_ss_post }, /* Ss */
129 { termp_pp_pre, NULL }, /* Pp */
130 { termp_d1_pre, termp_bl_post }, /* D1 */
131 { termp_d1_pre, termp_bl_post }, /* Dl */
132 { termp_bd_pre, termp_bd_post }, /* Bd */
133 { NULL, NULL }, /* Ed */
134 { termp_bl_pre, termp_bl_post }, /* Bl */
135 { NULL, NULL }, /* El */
136 { termp_it_pre, termp_it_post }, /* It */
137 { termp_under_pre, NULL }, /* Ad */
138 { termp_an_pre, NULL }, /* An */
139 { termp_ap_pre, NULL }, /* Ap */
140 { termp_under_pre, NULL }, /* Ar */
141 { termp_fd_pre, NULL }, /* Cd */
142 { termp_bold_pre, NULL }, /* Cm */
143 { termp_li_pre, NULL }, /* Dv */
144 { NULL, NULL }, /* Er */
145 { NULL, NULL }, /* Ev */
146 { termp_ex_pre, NULL }, /* Ex */
147 { termp_fa_pre, NULL }, /* Fa */
148 { termp_fd_pre, termp_fd_post }, /* Fd */
149 { termp_fl_pre, NULL }, /* Fl */
150 { termp_fn_pre, NULL }, /* Fn */
151 { termp_ft_pre, NULL }, /* Ft */
152 { termp_bold_pre, NULL }, /* Ic */
153 { termp_in_pre, termp_in_post }, /* In */
154 { termp_li_pre, NULL }, /* Li */
155 { termp_nd_pre, NULL }, /* Nd */
156 { termp_nm_pre, termp_nm_post }, /* Nm */
157 { termp_quote_pre, termp_quote_post }, /* Op */
158 { termp_abort_pre, NULL }, /* Ot */
159 { termp_under_pre, NULL }, /* Pa */
160 { termp_ex_pre, NULL }, /* Rv */
161 { NULL, NULL }, /* St */
162 { termp_under_pre, NULL }, /* Va */
163 { termp_vt_pre, NULL }, /* Vt */
164 { termp_xr_pre, NULL }, /* Xr */
165 { termp__a_pre, termp____post }, /* %A */
166 { termp_under_pre, termp____post }, /* %B */
167 { NULL, termp____post }, /* %D */
168 { termp_under_pre, termp____post }, /* %I */
169 { termp_under_pre, termp____post }, /* %J */
170 { NULL, termp____post }, /* %N */
171 { NULL, termp____post }, /* %O */
172 { NULL, termp____post }, /* %P */
173 { NULL, termp____post }, /* %R */
174 { termp__t_pre, termp__t_post }, /* %T */
175 { NULL, termp____post }, /* %V */
176 { NULL, NULL }, /* Ac */
177 { termp_quote_pre, termp_quote_post }, /* Ao */
178 { termp_quote_pre, termp_quote_post }, /* Aq */
179 { NULL, NULL }, /* At */
180 { NULL, NULL }, /* Bc */
181 { termp_bf_pre, NULL }, /* Bf */
182 { termp_quote_pre, termp_quote_post }, /* Bo */
183 { termp_quote_pre, termp_quote_post }, /* Bq */
184 { termp_xx_pre, termp_xx_post }, /* Bsx */
185 { NULL, NULL }, /* Bx */
186 { termp_skip_pre, NULL }, /* Db */
187 { NULL, NULL }, /* Dc */
188 { termp_quote_pre, termp_quote_post }, /* Do */
189 { termp_quote_pre, termp_quote_post }, /* Dq */
190 { NULL, NULL }, /* Ec */ /* FIXME: no space */
191 { NULL, NULL }, /* Ef */
192 { termp_under_pre, NULL }, /* Em */
193 { termp_eo_pre, termp_eo_post }, /* Eo */
194 { termp_xx_pre, termp_xx_post }, /* Fx */
195 { termp_bold_pre, NULL }, /* Ms */
196 { termp_li_pre, NULL }, /* No */
197 { termp_ns_pre, NULL }, /* Ns */
198 { termp_xx_pre, termp_xx_post }, /* Nx */
199 { termp_xx_pre, termp_xx_post }, /* Ox */
200 { NULL, NULL }, /* Pc */
201 { NULL, termp_pf_post }, /* Pf */
202 { termp_quote_pre, termp_quote_post }, /* Po */
203 { termp_quote_pre, termp_quote_post }, /* Pq */
204 { NULL, NULL }, /* Qc */
205 { termp_quote_pre, termp_quote_post }, /* Ql */
206 { termp_quote_pre, termp_quote_post }, /* Qo */
207 { termp_quote_pre, termp_quote_post }, /* Qq */
208 { NULL, NULL }, /* Re */
209 { termp_rs_pre, NULL }, /* Rs */
210 { NULL, NULL }, /* Sc */
211 { termp_quote_pre, termp_quote_post }, /* So */
212 { termp_quote_pre, termp_quote_post }, /* Sq */
213 { termp_sm_pre, NULL }, /* Sm */
214 { termp_under_pre, NULL }, /* Sx */
215 { termp_bold_pre, NULL }, /* Sy */
216 { NULL, NULL }, /* Tn */
217 { termp_xx_pre, termp_xx_post }, /* Ux */
218 { NULL, NULL }, /* Xc */
219 { NULL, NULL }, /* Xo */
220 { termp_fo_pre, termp_fo_post }, /* Fo */
221 { NULL, NULL }, /* Fc */
222 { termp_quote_pre, termp_quote_post }, /* Oo */
223 { NULL, NULL }, /* Oc */
224 { termp_bk_pre, termp_bk_post }, /* Bk */
225 { NULL, NULL }, /* Ek */
226 { NULL, NULL }, /* Bt */
227 { NULL, NULL }, /* Hf */
228 { termp_under_pre, NULL }, /* Fr */
229 { NULL, NULL }, /* Ud */
230 { NULL, termp_lb_post }, /* Lb */
231 { termp_abort_pre, NULL }, /* Lp */
232 { termp_lk_pre, NULL }, /* Lk */
233 { termp_under_pre, NULL }, /* Mt */
234 { termp_quote_pre, termp_quote_post }, /* Brq */
235 { termp_quote_pre, termp_quote_post }, /* Bro */
236 { NULL, NULL }, /* Brc */
237 { NULL, termp____post }, /* %C */
238 { termp_skip_pre, NULL }, /* Es */
239 { termp_quote_pre, termp_quote_post }, /* En */
240 { termp_xx_pre, termp_xx_post }, /* Dx */
241 { NULL, termp____post }, /* %Q */
242 { NULL, termp____post }, /* %U */
243 { NULL, NULL }, /* Ta */
244 { termp_skip_pre, NULL }, /* Tg */
245 };
246
247
248 void
249 terminal_mdoc(void *arg, const struct roff_meta *mdoc)
250 {
251 struct roff_node *n, *nn;
252 struct termp *p;
253 size_t save_defindent;
254
255 p = (struct termp *)arg;
256 p->tcol->rmargin = p->maxrmargin = p->defrmargin;
257 term_tab_set(p, NULL);
258 term_tab_set(p, "T");
259 term_tab_set(p, ".5i");
260
261 n = mdoc->first->child;
262 if (p->synopsisonly) {
263 for (nn = NULL; n != NULL; n = n->next) {
264 if (n->tok != MDOC_Sh)
265 continue;
266 if (n->sec == SEC_SYNOPSIS)
267 break;
268 if (nn == NULL && n->sec == SEC_NAME)
269 nn = n;
270 }
271 if (n == NULL)
272 n = nn;
273 p->flags |= TERMP_NOSPACE;
274 if (n != NULL && (n = n->child->next->child) != NULL)
275 print_mdoc_nodelist(p, NULL, mdoc, n);
276 term_newln(p);
277 } else {
278 save_defindent = p->defindent;
279 if (p->defindent == 0)
280 p->defindent = 5;
281 term_begin(p, print_mdoc_head, print_mdoc_foot, mdoc);
282 while (n != NULL &&
283 (n->type == ROFFT_COMMENT ||
284 n->flags & NODE_NOPRT))
285 n = n->next;
286 if (n != NULL) {
287 if (n->tok != MDOC_Sh)
288 term_vspace(p);
289 print_mdoc_nodelist(p, NULL, mdoc, n);
290 }
291 term_end(p);
292 p->defindent = save_defindent;
293 }
294 }
295
296 static void
297 print_mdoc_nodelist(DECL_ARGS)
298 {
299 while (n != NULL) {
300 print_mdoc_node(p, pair, meta, n);
301 n = n->next;
302 }
303 }
304
305 static void
306 print_mdoc_node(DECL_ARGS)
307 {
308 const struct mdoc_term_act *act;
309 struct termpair npair;
310 size_t offset, rmargin;
311 int chld;
312
313 /*
314 * In no-fill mode, break the output line at the beginning
315 * of new input lines except after \c, and nowhere else.
316 */
317
318 if (n->flags & NODE_NOFILL) {
319 if (n->flags & NODE_LINE &&
320 (p->flags & TERMP_NONEWLINE) == 0)
321 term_newln(p);
322 p->flags |= TERMP_BRNEVER;
323 } else
324 p->flags &= ~TERMP_BRNEVER;
325
326 if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
327 return;
328
329 chld = 1;
330 offset = p->tcol->offset;
331 rmargin = p->tcol->rmargin;
332 n->flags &= ~NODE_ENDED;
333 n->prev_font = p->fonti;
334
335 memset(&npair, 0, sizeof(struct termpair));
336 npair.ppair = pair;
337
338 if (n->flags & NODE_ID && n->tok != MDOC_Pp &&
339 (n->tok != MDOC_It || n->type != ROFFT_BLOCK))
340 term_tag_write(n, p->line);
341
342 /*
343 * Keeps only work until the end of a line. If a keep was
344 * invoked in a prior line, revert it to PREKEEP.
345 */
346
347 if (p->flags & TERMP_KEEP && n->flags & NODE_LINE) {
348 p->flags &= ~TERMP_KEEP;
349 p->flags |= TERMP_PREKEEP;
350 }
351
352 /*
353 * After the keep flags have been set up, we may now
354 * produce output. Note that some pre-handlers do so.
355 */
356
357 act = NULL;
358 switch (n->type) {
359 case ROFFT_TEXT:
360 if (n->flags & NODE_LINE) {
361 switch (*n->string) {
362 case '\0':
363 if (p->flags & TERMP_NONEWLINE)
364 term_newln(p);
365 else
366 term_vspace(p);
367 return;
368 case ' ':
369 if ((p->flags & TERMP_NONEWLINE) == 0)
370 term_newln(p);
371 break;
372 default:
373 break;
374 }
375 }
376 if (NODE_DELIMC & n->flags)
377 p->flags |= TERMP_NOSPACE;
378 term_word(p, n->string);
379 if (NODE_DELIMO & n->flags)
380 p->flags |= TERMP_NOSPACE;
381 break;
382 case ROFFT_EQN:
383 if ( ! (n->flags & NODE_LINE))
384 p->flags |= TERMP_NOSPACE;
385 term_eqn(p, n->eqn);
386 if (n->next != NULL && ! (n->next->flags & NODE_LINE))
387 p->flags |= TERMP_NOSPACE;
388 break;
389 case ROFFT_TBL:
390 if (p->tbl.cols == NULL)
391 term_newln(p);
392 term_tbl(p, n->span);
393 break;
394 default:
395 if (n->tok < ROFF_MAX) {
396 roff_term_pre(p, n);
397 return;
398 }
399 assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
400 act = mdoc_term_acts + (n->tok - MDOC_Dd);
401 if (act->pre != NULL &&
402 (n->end == ENDBODY_NOT || n->child != NULL))
403 chld = (*act->pre)(p, &npair, meta, n);
404 break;
405 }
406
407 if (chld && n->child)
408 print_mdoc_nodelist(p, &npair, meta, n->child);
409
410 term_fontpopq(p,
411 (ENDBODY_NOT == n->end ? n : n->body)->prev_font);
412
413 switch (n->type) {
414 case ROFFT_TEXT:
415 break;
416 case ROFFT_TBL:
417 break;
418 case ROFFT_EQN:
419 break;
420 default:
421 if (act->post == NULL || n->flags & NODE_ENDED)
422 break;
423 (void)(*act->post)(p, &npair, meta, n);
424
425 /*
426 * Explicit end tokens not only call the post
427 * handler, but also tell the respective block
428 * that it must not call the post handler again.
429 */
430 if (ENDBODY_NOT != n->end)
431 n->body->flags |= NODE_ENDED;
432 break;
433 }
434
435 if (NODE_EOS & n->flags)
436 p->flags |= TERMP_SENTENCE;
437
438 if (n->type != ROFFT_TEXT)
439 p->tcol->offset = offset;
440 p->tcol->rmargin = rmargin;
441 }
442
443 static void
444 print_mdoc_foot(struct termp *p, const struct roff_meta *meta)
445 {
446 size_t sz;
447
448 term_fontrepl(p, TERMFONT_NONE);
449
450 /*
451 * Output the footer in new-groff style, that is, three columns
452 * with the middle being the manual date and flanking columns
453 * being the operating system:
454 *
455 * SYSTEM DATE SYSTEM
456 */
457
458 term_vspace(p);
459
460 p->tcol->offset = 0;
461 sz = term_strlen(p, meta->date);
462 p->tcol->rmargin = p->maxrmargin > sz ?
463 (p->maxrmargin + term_len(p, 1) - sz) / 2 : 0;
464 p->trailspace = 1;
465 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
466
467 term_word(p, meta->os);
468 term_flushln(p);
469
470 p->tcol->offset = p->tcol->rmargin;
471 sz = term_strlen(p, meta->os);
472 p->tcol->rmargin = p->maxrmargin > sz ? p->maxrmargin - sz : 0;
473 p->flags |= TERMP_NOSPACE;
474
475 term_word(p, meta->date);
476 term_flushln(p);
477
478 p->tcol->offset = p->tcol->rmargin;
479 p->tcol->rmargin = p->maxrmargin;
480 p->trailspace = 0;
481 p->flags &= ~TERMP_NOBREAK;
482 p->flags |= TERMP_NOSPACE;
483
484 term_word(p, meta->os);
485 term_flushln(p);
486
487 p->tcol->offset = 0;
488 p->tcol->rmargin = p->maxrmargin;
489 p->flags = 0;
490 }
491
492 static void
493 print_mdoc_head(struct termp *p, const struct roff_meta *meta)
494 {
495 char *volume, *title;
496 size_t vollen, titlen;
497
498 /*
499 * The header is strange. It has three components, which are
500 * really two with the first duplicated. It goes like this:
501 *
502 * IDENTIFIER TITLE IDENTIFIER
503 *
504 * The IDENTIFIER is NAME(SECTION), which is the command-name
505 * (if given, or "unknown" if not) followed by the manual page
506 * section. These are given in `Dt'. The TITLE is a free-form
507 * string depending on the manual volume. If not specified, it
508 * switches on the manual section.
509 */
510
511 assert(meta->vol);
512 if (NULL == meta->arch)
513 volume = mandoc_strdup(meta->vol);
514 else
515 mandoc_asprintf(&volume, "%s (%s)",
516 meta->vol, meta->arch);
517 vollen = term_strlen(p, volume);
518
519 if (NULL == meta->msec)
520 title = mandoc_strdup(meta->title);
521 else
522 mandoc_asprintf(&title, "%s(%s)",
523 meta->title, meta->msec);
524 titlen = term_strlen(p, title);
525
526 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
527 p->trailspace = 1;
528 p->tcol->offset = 0;
529 p->tcol->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
530 (p->maxrmargin - vollen + term_len(p, 1)) / 2 :
531 vollen < p->maxrmargin ? p->maxrmargin - vollen : 0;
532
533 term_word(p, title);
534 term_flushln(p);
535
536 p->flags |= TERMP_NOSPACE;
537 p->tcol->offset = p->tcol->rmargin;
538 p->tcol->rmargin = p->tcol->offset + vollen + titlen <
539 p->maxrmargin ? p->maxrmargin - titlen : p->maxrmargin;
540
541 term_word(p, volume);
542 term_flushln(p);
543
544 p->flags &= ~TERMP_NOBREAK;
545 p->trailspace = 0;
546 if (p->tcol->rmargin + titlen <= p->maxrmargin) {
547 p->flags |= TERMP_NOSPACE;
548 p->tcol->offset = p->tcol->rmargin;
549 p->tcol->rmargin = p->maxrmargin;
550 term_word(p, title);
551 term_flushln(p);
552 }
553
554 p->flags &= ~TERMP_NOSPACE;
555 p->tcol->offset = 0;
556 p->tcol->rmargin = p->maxrmargin;
557 free(title);
558 free(volume);
559 }
560
561 static int
562 a2width(const struct termp *p, const char *v)
563 {
564 struct roffsu su;
565 const char *end;
566
567 end = a2roffsu(v, &su, SCALE_MAX);
568 if (end == NULL || *end != '\0') {
569 SCALE_HS_INIT(&su, term_strlen(p, v));
570 su.scale /= term_strlen(p, "0");
571 }
572 return term_hen(p, &su);
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, struct roff_node *bl, struct roff_node *n)
582 {
583 struct roff_node *nn;
584
585 term_newln(p);
586
587 if ((bl->tok == MDOC_Bd && bl->norm->Bd.comp) ||
588 (bl->tok == MDOC_Bl && bl->norm->Bl.comp))
589 return;
590
591 /* Do not vspace directly after Ss/Sh. */
592
593 nn = n;
594 while (roff_node_prev(nn) == NULL) {
595 do {
596 nn = nn->parent;
597 if (nn->type == ROFFT_ROOT)
598 return;
599 } while (nn->type != ROFFT_BLOCK);
600 if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
601 return;
602 if (nn->tok == MDOC_It &&
603 nn->parent->parent->norm->Bl.type != LIST_item)
604 break;
605 }
606
607 /*
608 * No vertical space after:
609 * items in .Bl -column
610 * items without a body in .Bl -diag
611 */
612
613 if (bl->tok != MDOC_Bl ||
614 n->prev == NULL || n->prev->tok != MDOC_It ||
615 (bl->norm->Bl.type != LIST_column &&
616 (bl->norm->Bl.type != LIST_diag ||
617 n->prev->body->child != NULL)))
618 term_vspace(p);
619 }
620
621
622 static int
623 termp_it_pre(DECL_ARGS)
624 {
625 struct roffsu su;
626 char buf[24];
627 const struct roff_node *bl, *nn;
628 size_t ncols, dcol;
629 int i, offset, width;
630 enum mdoc_list type;
631
632 if (n->type == ROFFT_BLOCK) {
633 print_bvspace(p, n->parent->parent, n);
634 if (n->flags & NODE_ID)
635 term_tag_write(n, p->line);
636 return 1;
637 }
638
639 bl = n->parent->parent->parent;
640 type = bl->norm->Bl.type;
641
642 /*
643 * Defaults for specific list types.
644 */
645
646 switch (type) {
647 case LIST_bullet:
648 case LIST_dash:
649 case LIST_hyphen:
650 case LIST_enum:
651 width = term_len(p, 2);
652 break;
653 case LIST_hang:
654 case LIST_tag:
655 width = term_len(p, 8);
656 break;
657 case LIST_column:
658 width = term_len(p, 10);
659 break;
660 default:
661 width = 0;
662 break;
663 }
664 offset = 0;
665
666 /*
667 * First calculate width and offset. This is pretty easy unless
668 * we're a -column list, in which case all prior columns must
669 * be accounted for.
670 */
671
672 if (bl->norm->Bl.offs != NULL) {
673 offset = a2width(p, bl->norm->Bl.offs);
674 if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
675 offset = -p->tcol->offset;
676 else if (offset > SHRT_MAX)
677 offset = 0;
678 }
679
680 switch (type) {
681 case LIST_column:
682 if (n->type == ROFFT_HEAD)
683 break;
684
685 /*
686 * Imitate groff's column handling:
687 * - For each earlier column, add its width.
688 * - For less than 5 columns, add four more blanks per
689 * column.
690 * - For exactly 5 columns, add three more blank per
691 * column.
692 * - For more than 5 columns, add only one column.
693 */
694 ncols = bl->norm->Bl.ncols;
695 dcol = ncols < 5 ? term_len(p, 4) :
696 ncols == 5 ? term_len(p, 3) : term_len(p, 1);
697
698 /*
699 * Calculate the offset by applying all prior ROFFT_BODY,
700 * so we stop at the ROFFT_HEAD (nn->prev == NULL).
701 */
702
703 for (i = 0, nn = n->prev;
704 nn->prev && i < (int)ncols;
705 nn = nn->prev, i++) {
706 SCALE_HS_INIT(&su,
707 term_strlen(p, bl->norm->Bl.cols[i]));
708 su.scale /= term_strlen(p, "0");
709 offset += term_hen(p, &su) + dcol;
710 }
711
712 /*
713 * When exceeding the declared number of columns, leave
714 * the remaining widths at 0. This will later be
715 * adjusted to the default width of 10, or, for the last
716 * column, stretched to the right margin.
717 */
718 if (i >= (int)ncols)
719 break;
720
721 /*
722 * Use the declared column widths, extended as explained
723 * in the preceding paragraph.
724 */
725 SCALE_HS_INIT(&su, term_strlen(p, bl->norm->Bl.cols[i]));
726 su.scale /= term_strlen(p, "0");
727 width = term_hen(p, &su) + dcol;
728 break;
729 default:
730 if (NULL == bl->norm->Bl.width)
731 break;
732
733 /*
734 * Note: buffer the width by 2, which is groff's magic
735 * number for buffering single arguments. See the above
736 * handling for column for how this changes.
737 */
738 width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
739 if (width < 0 && (size_t)(-width) > p->tcol->offset)
740 width = -p->tcol->offset;
741 else if (width > SHRT_MAX)
742 width = 0;
743 break;
744 }
745
746 /*
747 * Whitespace control. Inset bodies need an initial space,
748 * while diagonal bodies need two.
749 */
750
751 p->flags |= TERMP_NOSPACE;
752
753 switch (type) {
754 case LIST_diag:
755 if (n->type == ROFFT_BODY)
756 term_word(p, "\\ \\ ");
757 break;
758 case LIST_inset:
759 if (n->type == ROFFT_BODY && n->parent->head->child != NULL)
760 term_word(p, "\\ ");
761 break;
762 default:
763 break;
764 }
765
766 p->flags |= TERMP_NOSPACE;
767
768 switch (type) {
769 case LIST_diag:
770 if (n->type == ROFFT_HEAD)
771 term_fontpush(p, TERMFONT_BOLD);
772 break;
773 default:
774 break;
775 }
776
777 /*
778 * Pad and break control. This is the tricky part. These flags
779 * are documented in term_flushln() in term.c. Note that we're
780 * going to unset all of these flags in termp_it_post() when we
781 * exit.
782 */
783
784 switch (type) {
785 case LIST_enum:
786 case LIST_bullet:
787 case LIST_dash:
788 case LIST_hyphen:
789 if (n->type == ROFFT_HEAD) {
790 p->flags |= TERMP_NOBREAK | TERMP_HANG;
791 p->trailspace = 1;
792 } else if (width <= (int)term_len(p, 2))
793 p->flags |= TERMP_NOPAD;
794 break;
795 case LIST_hang:
796 if (n->type != ROFFT_HEAD)
797 break;
798 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
799 p->trailspace = 1;
800 break;
801 case LIST_tag:
802 if (n->type != ROFFT_HEAD)
803 break;
804
805 p->flags |= TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND;
806 p->trailspace = 2;
807
808 if (NULL == n->next || NULL == n->next->child)
809 p->flags |= TERMP_HANG;
810 break;
811 case LIST_column:
812 if (n->type == ROFFT_HEAD)
813 break;
814
815 if (NULL == n->next) {
816 p->flags &= ~TERMP_NOBREAK;
817 p->trailspace = 0;
818 } else {
819 p->flags |= TERMP_NOBREAK;
820 p->trailspace = 1;
821 }
822
823 break;
824 case LIST_diag:
825 if (n->type != ROFFT_HEAD)
826 break;
827 p->flags |= TERMP_NOBREAK | TERMP_BRIND;
828 p->trailspace = 1;
829 break;
830 default:
831 break;
832 }
833
834 /*
835 * Margin control. Set-head-width lists have their right
836 * margins shortened. The body for these lists has the offset
837 * necessarily lengthened. Everybody gets the offset.
838 */
839
840 p->tcol->offset += offset;
841
842 switch (type) {
843 case LIST_bullet:
844 case LIST_dash:
845 case LIST_enum:
846 case LIST_hyphen:
847 case LIST_hang:
848 case LIST_tag:
849 if (n->type == ROFFT_HEAD)
850 p->tcol->rmargin = p->tcol->offset + width;
851 else
852 p->tcol->offset += width;
853 break;
854 case LIST_column:
855 assert(width);
856 p->tcol->rmargin = p->tcol->offset + width;
857 /*
858 * XXX - this behaviour is not documented: the
859 * right-most column is filled to the right margin.
860 */
861 if (n->type == ROFFT_HEAD)
862 break;
863 if (n->next == NULL && p->tcol->rmargin < p->maxrmargin)
864 p->tcol->rmargin = p->maxrmargin;
865 break;
866 default:
867 break;
868 }
869
870 /*
871 * The dash, hyphen, bullet and enum lists all have a special
872 * HEAD character (temporarily bold, in some cases).
873 */
874
875 if (n->type == ROFFT_HEAD)
876 switch (type) {
877 case LIST_bullet:
878 term_fontpush(p, TERMFONT_BOLD);
879 term_word(p, "\\[bu]");
880 term_fontpop(p);
881 break;
882 case LIST_dash:
883 case LIST_hyphen:
884 term_fontpush(p, TERMFONT_BOLD);
885 term_word(p, "-");
886 term_fontpop(p);
887 break;
888 case LIST_enum:
889 (pair->ppair->ppair->count)++;
890 (void)snprintf(buf, sizeof(buf), "%d.",
891 pair->ppair->ppair->count);
892 term_word(p, buf);
893 break;
894 default:
895 break;
896 }
897
898 /*
899 * If we're not going to process our children, indicate so here.
900 */
901
902 switch (type) {
903 case LIST_bullet:
904 case LIST_item:
905 case LIST_dash:
906 case LIST_hyphen:
907 case LIST_enum:
908 if (n->type == ROFFT_HEAD)
909 return 0;
910 break;
911 case LIST_column:
912 if (n->type == ROFFT_HEAD)
913 return 0;
914 p->minbl = 0;
915 break;
916 default:
917 break;
918 }
919
920 return 1;
921 }
922
923 static void
924 termp_it_post(DECL_ARGS)
925 {
926 enum mdoc_list type;
927
928 if (n->type == ROFFT_BLOCK)
929 return;
930
931 type = n->parent->parent->parent->norm->Bl.type;
932
933 switch (type) {
934 case LIST_item:
935 case LIST_diag:
936 case LIST_inset:
937 if (n->type == ROFFT_BODY)
938 term_newln(p);
939 break;
940 case LIST_column:
941 if (n->type == ROFFT_BODY)
942 term_flushln(p);
943 break;
944 default:
945 term_newln(p);
946 break;
947 }
948
949 /*
950 * Now that our output is flushed, we can reset our tags. Since
951 * only `It' sets these flags, we're free to assume that nobody
952 * has munged them in the meanwhile.
953 */
954
955 p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND | TERMP_HANG);
956 p->trailspace = 0;
957 }
958
959 static int
960 termp_nm_pre(DECL_ARGS)
961 {
962 const char *cp;
963
964 if (n->type == ROFFT_BLOCK) {
965 p->flags |= TERMP_PREKEEP;
966 return 1;
967 }
968
969 if (n->type == ROFFT_BODY) {
970 if (n->child == NULL)
971 return 0;
972 p->flags |= TERMP_NOSPACE;
973 cp = NULL;
974 if (n->prev->child != NULL)
975 cp = n->prev->child->string;
976 if (cp == NULL)
977 cp = meta->name;
978 if (cp == NULL)
979 p->tcol->offset += term_len(p, 6);
980 else
981 p->tcol->offset += term_len(p, 1) +
982 term_strlen(p, cp);
983 return 1;
984 }
985
986 if (n->child == NULL)
987 return 0;
988
989 if (n->type == ROFFT_HEAD)
990 synopsis_pre(p, n->parent);
991
992 if (n->type == ROFFT_HEAD &&
993 n->next != NULL && n->next->child != NULL) {
994 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK | TERMP_BRIND;
995 p->trailspace = 1;
996 p->tcol->rmargin = p->tcol->offset + term_len(p, 1);
997 if (n->child == NULL)
998 p->tcol->rmargin += term_strlen(p, meta->name);
999 else if (n->child->type == ROFFT_TEXT) {
1000 p->tcol->rmargin += term_strlen(p, n->child->string);
1001 if (n->child->next != NULL)
1002 p->flags |= TERMP_HANG;
1003 } else {
1004 p->tcol->rmargin += term_len(p, 5);
1005 p->flags |= TERMP_HANG;
1006 }
1007 }
1008 return termp_bold_pre(p, pair, meta, n);
1009 }
1010
1011 static void
1012 termp_nm_post(DECL_ARGS)
1013 {
1014 switch (n->type) {
1015 case ROFFT_BLOCK:
1016 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1017 break;
1018 case ROFFT_HEAD:
1019 if (n->next == NULL || n->next->child == NULL)
1020 break;
1021 term_flushln(p);
1022 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1023 p->trailspace = 0;
1024 break;
1025 case ROFFT_BODY:
1026 if (n->child != NULL)
1027 term_flushln(p);
1028 break;
1029 default:
1030 break;
1031 }
1032 }
1033
1034 static int
1035 termp_fl_pre(DECL_ARGS)
1036 {
1037 struct roff_node *nn;
1038
1039 term_fontpush(p, TERMFONT_BOLD);
1040 term_word(p, "\\-");
1041
1042 if (n->child != NULL ||
1043 ((nn = roff_node_next(n)) != NULL &&
1044 nn->type != ROFFT_TEXT &&
1045 (nn->flags & NODE_LINE) == 0))
1046 p->flags |= TERMP_NOSPACE;
1047
1048 return 1;
1049 }
1050
1051 static int
1052 termp__a_pre(DECL_ARGS)
1053 {
1054 struct roff_node *nn;
1055
1056 if ((nn = roff_node_prev(n)) != NULL && nn->tok == MDOC__A &&
1057 ((nn = roff_node_next(n)) == NULL || nn->tok != MDOC__A))
1058 term_word(p, "and");
1059
1060 return 1;
1061 }
1062
1063 static int
1064 termp_an_pre(DECL_ARGS)
1065 {
1066
1067 if (n->norm->An.auth == AUTH_split) {
1068 p->flags &= ~TERMP_NOSPLIT;
1069 p->flags |= TERMP_SPLIT;
1070 return 0;
1071 }
1072 if (n->norm->An.auth == AUTH_nosplit) {
1073 p->flags &= ~TERMP_SPLIT;
1074 p->flags |= TERMP_NOSPLIT;
1075 return 0;
1076 }
1077
1078 if (p->flags & TERMP_SPLIT)
1079 term_newln(p);
1080
1081 if (n->sec == SEC_AUTHORS && ! (p->flags & TERMP_NOSPLIT))
1082 p->flags |= TERMP_SPLIT;
1083
1084 return 1;
1085 }
1086
1087 static int
1088 termp_ns_pre(DECL_ARGS)
1089 {
1090
1091 if ( ! (NODE_LINE & n->flags))
1092 p->flags |= TERMP_NOSPACE;
1093 return 1;
1094 }
1095
1096 static int
1097 termp_rs_pre(DECL_ARGS)
1098 {
1099 if (SEC_SEE_ALSO != n->sec)
1100 return 1;
1101 if (n->type == ROFFT_BLOCK && roff_node_prev(n) != NULL)
1102 term_vspace(p);
1103 return 1;
1104 }
1105
1106 static int
1107 termp_ex_pre(DECL_ARGS)
1108 {
1109 term_newln(p);
1110 return 1;
1111 }
1112
1113 static int
1114 termp_nd_pre(DECL_ARGS)
1115 {
1116 if (n->type == ROFFT_BODY)
1117 term_word(p, "\\(en");
1118 return 1;
1119 }
1120
1121 static int
1122 termp_bl_pre(DECL_ARGS)
1123 {
1124 switch (n->type) {
1125 case ROFFT_BLOCK:
1126 term_newln(p);
1127 return 1;
1128 case ROFFT_HEAD:
1129 return 0;
1130 default:
1131 return 1;
1132 }
1133 }
1134
1135 static void
1136 termp_bl_post(DECL_ARGS)
1137 {
1138 if (n->type != ROFFT_BLOCK)
1139 return;
1140 term_newln(p);
1141 if (n->tok != MDOC_Bl || n->norm->Bl.type != LIST_column)
1142 return;
1143 term_tab_set(p, NULL);
1144 term_tab_set(p, "T");
1145 term_tab_set(p, ".5i");
1146 }
1147
1148 static int
1149 termp_xr_pre(DECL_ARGS)
1150 {
1151 if (NULL == (n = n->child))
1152 return 0;
1153
1154 assert(n->type == ROFFT_TEXT);
1155 term_word(p, n->string);
1156
1157 if (NULL == (n = n->next))
1158 return 0;
1159
1160 p->flags |= TERMP_NOSPACE;
1161 term_word(p, "(");
1162 p->flags |= TERMP_NOSPACE;
1163
1164 assert(n->type == ROFFT_TEXT);
1165 term_word(p, n->string);
1166
1167 p->flags |= TERMP_NOSPACE;
1168 term_word(p, ")");
1169
1170 return 0;
1171 }
1172
1173 /*
1174 * This decides how to assert whitespace before any of the SYNOPSIS set
1175 * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
1176 * macro combos).
1177 */
1178 static void
1179 synopsis_pre(struct termp *p, struct roff_node *n)
1180 {
1181 struct roff_node *np;
1182
1183 if ((n->flags & NODE_SYNPRETTY) == 0 ||
1184 (np = roff_node_prev(n)) == NULL)
1185 return;
1186
1187 /*
1188 * If we're the second in a pair of like elements, emit our
1189 * newline and return. UNLESS we're `Fo', `Fn', `Fn', in which
1190 * case we soldier on.
1191 */
1192 if (np->tok == n->tok &&
1193 MDOC_Ft != n->tok &&
1194 MDOC_Fo != n->tok &&
1195 MDOC_Fn != n->tok) {
1196 term_newln(p);
1197 return;
1198 }
1199
1200 /*
1201 * If we're one of the SYNOPSIS set and non-like pair-wise after
1202 * another (or Fn/Fo, which we've let slip through) then assert
1203 * vertical space, else only newline and move on.
1204 */
1205 switch (np->tok) {
1206 case MDOC_Fd:
1207 case MDOC_Fn:
1208 case MDOC_Fo:
1209 case MDOC_In:
1210 case MDOC_Vt:
1211 term_vspace(p);
1212 break;
1213 case MDOC_Ft:
1214 if (n->tok != MDOC_Fn && n->tok != MDOC_Fo) {
1215 term_vspace(p);
1216 break;
1217 }
1218 /* FALLTHROUGH */
1219 default:
1220 term_newln(p);
1221 break;
1222 }
1223 }
1224
1225 static int
1226 termp_vt_pre(DECL_ARGS)
1227 {
1228 switch (n->type) {
1229 case ROFFT_ELEM:
1230 return termp_ft_pre(p, pair, meta, n);
1231 case ROFFT_BLOCK:
1232 synopsis_pre(p, n);
1233 return 1;
1234 case ROFFT_HEAD:
1235 return 0;
1236 default:
1237 return termp_under_pre(p, pair, meta, n);
1238 }
1239 }
1240
1241 static int
1242 termp_bold_pre(DECL_ARGS)
1243 {
1244 term_fontpush(p, TERMFONT_BOLD);
1245 return 1;
1246 }
1247
1248 static int
1249 termp_fd_pre(DECL_ARGS)
1250 {
1251 synopsis_pre(p, n);
1252 return termp_bold_pre(p, pair, meta, n);
1253 }
1254
1255 static void
1256 termp_fd_post(DECL_ARGS)
1257 {
1258 term_newln(p);
1259 }
1260
1261 static int
1262 termp_sh_pre(DECL_ARGS)
1263 {
1264 struct roff_node *np;
1265
1266 switch (n->type) {
1267 case ROFFT_BLOCK:
1268 /*
1269 * Vertical space before sections, except
1270 * when the previous section was empty.
1271 */
1272 if ((np = roff_node_prev(n)) == NULL ||
1273 np->tok != MDOC_Sh ||
1274 (np->body != NULL && np->body->child != NULL))
1275 term_vspace(p);
1276 break;
1277 case ROFFT_HEAD:
1278 return termp_bold_pre(p, pair, meta, n);
1279 case ROFFT_BODY:
1280 p->tcol->offset = term_len(p, p->defindent);
1281 term_tab_set(p, NULL);
1282 term_tab_set(p, "T");
1283 term_tab_set(p, ".5i");
1284 if (n->sec == SEC_AUTHORS)
1285 p->flags &= ~(TERMP_SPLIT|TERMP_NOSPLIT);
1286 break;
1287 default:
1288 break;
1289 }
1290 return 1;
1291 }
1292
1293 static void
1294 termp_sh_post(DECL_ARGS)
1295 {
1296 switch (n->type) {
1297 case ROFFT_HEAD:
1298 term_newln(p);
1299 break;
1300 case ROFFT_BODY:
1301 term_newln(p);
1302 p->tcol->offset = 0;
1303 break;
1304 default:
1305 break;
1306 }
1307 }
1308
1309 static void
1310 termp_lb_post(DECL_ARGS)
1311 {
1312 if (n->sec == SEC_LIBRARY && n->flags & NODE_LINE)
1313 term_newln(p);
1314 }
1315
1316 static int
1317 termp_d1_pre(DECL_ARGS)
1318 {
1319 if (n->type != ROFFT_BLOCK)
1320 return 1;
1321 term_newln(p);
1322 p->tcol->offset += term_len(p, p->defindent + 1);
1323 term_tab_set(p, NULL);
1324 term_tab_set(p, "T");
1325 term_tab_set(p, ".5i");
1326 return 1;
1327 }
1328
1329 static int
1330 termp_ft_pre(DECL_ARGS)
1331 {
1332 synopsis_pre(p, n);
1333 return termp_under_pre(p, pair, meta, n);
1334 }
1335
1336 static int
1337 termp_fn_pre(DECL_ARGS)
1338 {
1339 size_t rmargin = 0;
1340 int pretty;
1341
1342 synopsis_pre(p, n);
1343 pretty = n->flags & NODE_SYNPRETTY;
1344 if ((n = n->child) == NULL)
1345 return 0;
1346
1347 if (pretty) {
1348 rmargin = p->tcol->rmargin;
1349 p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
1350 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
1351 }
1352
1353 assert(n->type == ROFFT_TEXT);
1354 term_fontpush(p, TERMFONT_BOLD);
1355 term_word(p, n->string);
1356 term_fontpop(p);
1357
1358 if (pretty) {
1359 term_flushln(p);
1360 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1361 p->flags |= TERMP_NOPAD;
1362 p->tcol->offset = p->tcol->rmargin;
1363 p->tcol->rmargin = rmargin;
1364 }
1365
1366 p->flags |= TERMP_NOSPACE;
1367 term_word(p, "(");
1368 p->flags |= TERMP_NOSPACE;
1369
1370 for (n = n->next; n; n = n->next) {
1371 assert(n->type == ROFFT_TEXT);
1372 term_fontpush(p, TERMFONT_UNDER);
1373 if (pretty)
1374 p->flags |= TERMP_NBRWORD;
1375 term_word(p, n->string);
1376 term_fontpop(p);
1377
1378 if (n->next) {
1379 p->flags |= TERMP_NOSPACE;
1380 term_word(p, ",");
1381 }
1382 }
1383
1384 p->flags |= TERMP_NOSPACE;
1385 term_word(p, ")");
1386
1387 if (pretty) {
1388 p->flags |= TERMP_NOSPACE;
1389 term_word(p, ";");
1390 term_flushln(p);
1391 }
1392 return 0;
1393 }
1394
1395 static int
1396 termp_fa_pre(DECL_ARGS)
1397 {
1398 const struct roff_node *nn;
1399
1400 if (n->parent->tok != MDOC_Fo)
1401 return termp_under_pre(p, pair, meta, n);
1402
1403 for (nn = n->child; nn != NULL; nn = nn->next) {
1404 term_fontpush(p, TERMFONT_UNDER);
1405 p->flags |= TERMP_NBRWORD;
1406 term_word(p, nn->string);
1407 term_fontpop(p);
1408 if (nn->next != NULL) {
1409 p->flags |= TERMP_NOSPACE;
1410 term_word(p, ",");
1411 }
1412 }
1413 if (n->child != NULL &&
1414 (nn = roff_node_next(n)) != NULL &&
1415 nn->tok == MDOC_Fa) {
1416 p->flags |= TERMP_NOSPACE;
1417 term_word(p, ",");
1418 }
1419 return 0;
1420 }
1421
1422 static int
1423 termp_bd_pre(DECL_ARGS)
1424 {
1425 int offset;
1426
1427 if (n->type == ROFFT_BLOCK) {
1428 print_bvspace(p, n, n);
1429 return 1;
1430 } else if (n->type == ROFFT_HEAD)
1431 return 0;
1432
1433 /* Handle the -offset argument. */
1434
1435 if (n->norm->Bd.offs == NULL ||
1436 ! strcmp(n->norm->Bd.offs, "left"))
1437 /* nothing */;
1438 else if ( ! strcmp(n->norm->Bd.offs, "indent"))
1439 p->tcol->offset += term_len(p, p->defindent + 1);
1440 else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
1441 p->tcol->offset += term_len(p, (p->defindent + 1) * 2);
1442 else {
1443 offset = a2width(p, n->norm->Bd.offs);
1444 if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
1445 p->tcol->offset = 0;
1446 else if (offset < SHRT_MAX)
1447 p->tcol->offset += offset;
1448 }
1449
1450 switch (n->norm->Bd.type) {
1451 case DISP_literal:
1452 term_tab_set(p, NULL);
1453 term_tab_set(p, "T");
1454 term_tab_set(p, "8n");
1455 break;
1456 case DISP_centered:
1457 p->flags |= TERMP_CENTER;
1458 break;
1459 default:
1460 break;
1461 }
1462 return 1;
1463 }
1464
1465 static void
1466 termp_bd_post(DECL_ARGS)
1467 {
1468 if (n->type != ROFFT_BODY)
1469 return;
1470 if (n->norm->Bd.type == DISP_unfilled ||
1471 n->norm->Bd.type == DISP_literal)
1472 p->flags |= TERMP_BRNEVER;
1473 p->flags |= TERMP_NOSPACE;
1474 term_newln(p);
1475 p->flags &= ~TERMP_BRNEVER;
1476 if (n->norm->Bd.type == DISP_centered)
1477 p->flags &= ~TERMP_CENTER;
1478 }
1479
1480 static int
1481 termp_xx_pre(DECL_ARGS)
1482 {
1483 if ((n->aux = p->flags & TERMP_PREKEEP) == 0)
1484 p->flags |= TERMP_PREKEEP;
1485 return 1;
1486 }
1487
1488 static void
1489 termp_xx_post(DECL_ARGS)
1490 {
1491 if (n->aux == 0)
1492 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1493 }
1494
1495 static void
1496 termp_pf_post(DECL_ARGS)
1497 {
1498 if (n->next != NULL && (n->next->flags & NODE_LINE) == 0)
1499 p->flags |= TERMP_NOSPACE;
1500 }
1501
1502 static int
1503 termp_ss_pre(DECL_ARGS)
1504 {
1505 switch (n->type) {
1506 case ROFFT_BLOCK:
1507 if (roff_node_prev(n) == NULL)
1508 term_newln(p);
1509 else
1510 term_vspace(p);
1511 break;
1512 case ROFFT_HEAD:
1513 p->tcol->offset = term_len(p, (p->defindent+1)/2);
1514 return termp_bold_pre(p, pair, meta, n);
1515 case ROFFT_BODY:
1516 p->tcol->offset = term_len(p, p->defindent);
1517 term_tab_set(p, NULL);
1518 term_tab_set(p, "T");
1519 term_tab_set(p, ".5i");
1520 break;
1521 default:
1522 break;
1523 }
1524 return 1;
1525 }
1526
1527 static void
1528 termp_ss_post(DECL_ARGS)
1529 {
1530 if (n->type == ROFFT_HEAD || n->type == ROFFT_BODY)
1531 term_newln(p);
1532 }
1533
1534 static int
1535 termp_in_pre(DECL_ARGS)
1536 {
1537 synopsis_pre(p, n);
1538 if (n->flags & NODE_SYNPRETTY && n->flags & NODE_LINE) {
1539 term_fontpush(p, TERMFONT_BOLD);
1540 term_word(p, "#include");
1541 term_word(p, "<");
1542 } else {
1543 term_word(p, "<");
1544 term_fontpush(p, TERMFONT_UNDER);
1545 }
1546 p->flags |= TERMP_NOSPACE;
1547 return 1;
1548 }
1549
1550 static void
1551 termp_in_post(DECL_ARGS)
1552 {
1553 if (n->flags & NODE_SYNPRETTY)
1554 term_fontpush(p, TERMFONT_BOLD);
1555 p->flags |= TERMP_NOSPACE;
1556 term_word(p, ">");
1557 if (n->flags & NODE_SYNPRETTY)
1558 term_fontpop(p);
1559 }
1560
1561 static int
1562 termp_pp_pre(DECL_ARGS)
1563 {
1564 term_vspace(p);
1565 if (n->flags & NODE_ID)
1566 term_tag_write(n, p->line);
1567 return 0;
1568 }
1569
1570 static int
1571 termp_skip_pre(DECL_ARGS)
1572 {
1573 return 0;
1574 }
1575
1576 static int
1577 termp_quote_pre(DECL_ARGS)
1578 {
1579 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1580 return 1;
1581
1582 switch (n->tok) {
1583 case MDOC_Ao:
1584 case MDOC_Aq:
1585 term_word(p, n->child != NULL && n->child->next == NULL &&
1586 n->child->tok == MDOC_Mt ? "<" : "\\(la");
1587 break;
1588 case MDOC_Bro:
1589 case MDOC_Brq:
1590 term_word(p, "{");
1591 break;
1592 case MDOC_Oo:
1593 case MDOC_Op:
1594 case MDOC_Bo:
1595 case MDOC_Bq:
1596 term_word(p, "[");
1597 break;
1598 case MDOC__T:
1599 /* FALLTHROUGH */
1600 case MDOC_Do:
1601 case MDOC_Dq:
1602 term_word(p, "\\(lq");
1603 break;
1604 case MDOC_En:
1605 if (NULL == n->norm->Es ||
1606 NULL == n->norm->Es->child)
1607 return 1;
1608 term_word(p, n->norm->Es->child->string);
1609 break;
1610 case MDOC_Po:
1611 case MDOC_Pq:
1612 term_word(p, "(");
1613 break;
1614 case MDOC_Qo:
1615 case MDOC_Qq:
1616 term_word(p, "\"");
1617 break;
1618 case MDOC_Ql:
1619 case MDOC_So:
1620 case MDOC_Sq:
1621 term_word(p, "\\(oq");
1622 break;
1623 default:
1624 abort();
1625 }
1626
1627 p->flags |= TERMP_NOSPACE;
1628 return 1;
1629 }
1630
1631 static void
1632 termp_quote_post(DECL_ARGS)
1633 {
1634
1635 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1636 return;
1637
1638 p->flags |= TERMP_NOSPACE;
1639
1640 switch (n->tok) {
1641 case MDOC_Ao:
1642 case MDOC_Aq:
1643 term_word(p, n->child != NULL && n->child->next == NULL &&
1644 n->child->tok == MDOC_Mt ? ">" : "\\(ra");
1645 break;
1646 case MDOC_Bro:
1647 case MDOC_Brq:
1648 term_word(p, "}");
1649 break;
1650 case MDOC_Oo:
1651 case MDOC_Op:
1652 case MDOC_Bo:
1653 case MDOC_Bq:
1654 term_word(p, "]");
1655 break;
1656 case MDOC__T:
1657 /* FALLTHROUGH */
1658 case MDOC_Do:
1659 case MDOC_Dq:
1660 term_word(p, "\\(rq");
1661 break;
1662 case MDOC_En:
1663 if (n->norm->Es == NULL ||
1664 n->norm->Es->child == NULL ||
1665 n->norm->Es->child->next == NULL)
1666 p->flags &= ~TERMP_NOSPACE;
1667 else
1668 term_word(p, n->norm->Es->child->next->string);
1669 break;
1670 case MDOC_Po:
1671 case MDOC_Pq:
1672 term_word(p, ")");
1673 break;
1674 case MDOC_Qo:
1675 case MDOC_Qq:
1676 term_word(p, "\"");
1677 break;
1678 case MDOC_Ql:
1679 case MDOC_So:
1680 case MDOC_Sq:
1681 term_word(p, "\\(cq");
1682 break;
1683 default:
1684 abort();
1685 }
1686 }
1687
1688 static int
1689 termp_eo_pre(DECL_ARGS)
1690 {
1691
1692 if (n->type != ROFFT_BODY)
1693 return 1;
1694
1695 if (n->end == ENDBODY_NOT &&
1696 n->parent->head->child == NULL &&
1697 n->child != NULL &&
1698 n->child->end != ENDBODY_NOT)
1699 term_word(p, "\\&");
1700 else if (n->end != ENDBODY_NOT ? n->child != NULL :
1701 n->parent->head->child != NULL && (n->child != NULL ||
1702 (n->parent->tail != NULL && n->parent->tail->child != NULL)))
1703 p->flags |= TERMP_NOSPACE;
1704
1705 return 1;
1706 }
1707
1708 static void
1709 termp_eo_post(DECL_ARGS)
1710 {
1711 int body, tail;
1712
1713 if (n->type != ROFFT_BODY)
1714 return;
1715
1716 if (n->end != ENDBODY_NOT) {
1717 p->flags &= ~TERMP_NOSPACE;
1718 return;
1719 }
1720
1721 body = n->child != NULL || n->parent->head->child != NULL;
1722 tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
1723
1724 if (body && tail)
1725 p->flags |= TERMP_NOSPACE;
1726 else if ( ! (body || tail))
1727 term_word(p, "\\&");
1728 else if ( ! tail)
1729 p->flags &= ~TERMP_NOSPACE;
1730 }
1731
1732 static int
1733 termp_fo_pre(DECL_ARGS)
1734 {
1735 size_t rmargin;
1736
1737 switch (n->type) {
1738 case ROFFT_BLOCK:
1739 synopsis_pre(p, n);
1740 return 1;
1741 case ROFFT_BODY:
1742 rmargin = p->tcol->rmargin;
1743 if (n->flags & NODE_SYNPRETTY) {
1744 p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
1745 p->flags |= TERMP_NOBREAK | TERMP_BRIND |
1746 TERMP_HANG;
1747 }
1748 p->flags |= TERMP_NOSPACE;
1749 term_word(p, "(");
1750 p->flags |= TERMP_NOSPACE;
1751 if (n->flags & NODE_SYNPRETTY) {
1752 term_flushln(p);
1753 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND |
1754 TERMP_HANG);
1755 p->flags |= TERMP_NOPAD;
1756 p->tcol->offset = p->tcol->rmargin;
1757 p->tcol->rmargin = rmargin;
1758 }
1759 return 1;
1760 default:
1761 return termp_bold_pre(p, pair, meta, n);
1762 }
1763 }
1764
1765 static void
1766 termp_fo_post(DECL_ARGS)
1767 {
1768 if (n->type != ROFFT_BODY)
1769 return;
1770
1771 p->flags |= TERMP_NOSPACE;
1772 term_word(p, ")");
1773
1774 if (n->flags & NODE_SYNPRETTY) {
1775 p->flags |= TERMP_NOSPACE;
1776 term_word(p, ";");
1777 term_flushln(p);
1778 }
1779 }
1780
1781 static int
1782 termp_bf_pre(DECL_ARGS)
1783 {
1784 switch (n->type) {
1785 case ROFFT_HEAD:
1786 return 0;
1787 case ROFFT_BODY:
1788 break;
1789 default:
1790 return 1;
1791 }
1792 switch (n->norm->Bf.font) {
1793 case FONT_Em:
1794 return termp_under_pre(p, pair, meta, n);
1795 case FONT_Sy:
1796 return termp_bold_pre(p, pair, meta, n);
1797 default:
1798 return termp_li_pre(p, pair, meta, n);
1799 }
1800 }
1801
1802 static int
1803 termp_sm_pre(DECL_ARGS)
1804 {
1805 if (n->child == NULL)
1806 p->flags ^= TERMP_NONOSPACE;
1807 else if (strcmp(n->child->string, "on") == 0)
1808 p->flags &= ~TERMP_NONOSPACE;
1809 else
1810 p->flags |= TERMP_NONOSPACE;
1811
1812 if (p->col && ! (TERMP_NONOSPACE & p->flags))
1813 p->flags &= ~TERMP_NOSPACE;
1814
1815 return 0;
1816 }
1817
1818 static int
1819 termp_ap_pre(DECL_ARGS)
1820 {
1821 p->flags |= TERMP_NOSPACE;
1822 term_word(p, "'");
1823 p->flags |= TERMP_NOSPACE;
1824 return 1;
1825 }
1826
1827 static void
1828 termp____post(DECL_ARGS)
1829 {
1830 struct roff_node *nn;
1831
1832 /*
1833 * Handle lists of authors. In general, print each followed by
1834 * a comma. Don't print the comma if there are only two
1835 * authors.
1836 */
1837 if (n->tok == MDOC__A &&
1838 (nn = roff_node_next(n)) != NULL && nn->tok == MDOC__A &&
1839 ((nn = roff_node_next(nn)) == NULL || nn->tok != MDOC__A) &&
1840 ((nn = roff_node_prev(n)) == NULL || nn->tok != MDOC__A))
1841 return;
1842
1843 /* TODO: %U. */
1844
1845 if (n->parent == NULL || n->parent->tok != MDOC_Rs)
1846 return;
1847
1848 p->flags |= TERMP_NOSPACE;
1849 if (roff_node_next(n) == NULL) {
1850 term_word(p, ".");
1851 p->flags |= TERMP_SENTENCE;
1852 } else
1853 term_word(p, ",");
1854 }
1855
1856 static int
1857 termp_li_pre(DECL_ARGS)
1858 {
1859 term_fontpush(p, TERMFONT_NONE);
1860 return 1;
1861 }
1862
1863 static int
1864 termp_lk_pre(DECL_ARGS)
1865 {
1866 const struct roff_node *link, *descr, *punct;
1867
1868 if ((link = n->child) == NULL)
1869 return 0;
1870
1871 /* Find beginning of trailing punctuation. */
1872 punct = n->last;
1873 while (punct != link && punct->flags & NODE_DELIMC)
1874 punct = punct->prev;
1875 punct = punct->next;
1876
1877 /* Link text. */
1878 if ((descr = link->next) != NULL && descr != punct) {
1879 term_fontpush(p, TERMFONT_UNDER);
1880 while (descr != punct) {
1881 if (descr->flags & (NODE_DELIMC | NODE_DELIMO))
1882 p->flags |= TERMP_NOSPACE;
1883 term_word(p, descr->string);
1884 descr = descr->next;
1885 }
1886 term_fontpop(p);
1887 p->flags |= TERMP_NOSPACE;
1888 term_word(p, ":");
1889 }
1890
1891 /* Link target. */
1892 term_fontpush(p, TERMFONT_BOLD);
1893 term_word(p, link->string);
1894 term_fontpop(p);
1895
1896 /* Trailing punctuation. */
1897 while (punct != NULL) {
1898 p->flags |= TERMP_NOSPACE;
1899 term_word(p, punct->string);
1900 punct = punct->next;
1901 }
1902 return 0;
1903 }
1904
1905 static int
1906 termp_bk_pre(DECL_ARGS)
1907 {
1908 switch (n->type) {
1909 case ROFFT_BLOCK:
1910 break;
1911 case ROFFT_HEAD:
1912 return 0;
1913 case ROFFT_BODY:
1914 if (n->parent->args != NULL || n->prev->child == NULL)
1915 p->flags |= TERMP_PREKEEP;
1916 break;
1917 default:
1918 abort();
1919 }
1920 return 1;
1921 }
1922
1923 static void
1924 termp_bk_post(DECL_ARGS)
1925 {
1926 if (n->type == ROFFT_BODY)
1927 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1928 }
1929
1930 /*
1931 * If we are in an `Rs' and there is a journal present,
1932 * then quote us instead of underlining us (for disambiguation).
1933 */
1934 static void
1935 termp__t_post(DECL_ARGS)
1936 {
1937 if (n->parent != NULL && n->parent->tok == MDOC_Rs &&
1938 n->parent->norm->Rs.quote_T)
1939 termp_quote_post(p, pair, meta, n);
1940 termp____post(p, pair, meta, n);
1941 }
1942
1943 static int
1944 termp__t_pre(DECL_ARGS)
1945 {
1946 if (n->parent != NULL && n->parent->tok == MDOC_Rs &&
1947 n->parent->norm->Rs.quote_T)
1948 return termp_quote_pre(p, pair, meta, n);
1949 else
1950 return termp_under_pre(p, pair, meta, n);
1951 }
1952
1953 static int
1954 termp_under_pre(DECL_ARGS)
1955 {
1956 term_fontpush(p, TERMFONT_UNDER);
1957 return 1;
1958 }
1959
1960 static int
1961 termp_abort_pre(DECL_ARGS)
1962 {
1963 abort();
1964 }
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