1 /* $Id: mdoc_term.c,v 1.383 2023/11/13 19:13:01 schwarze Exp $ */
2 /*
3 * Copyright (c) 2010, 2012-2020, 2022 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
terminal_mdoc(void * arg,const struct roff_meta * mdoc)249 terminal_mdoc(void *arg, const struct roff_meta *mdoc)
250 {
251 struct roff_node *n, *nn;
252 struct termp *p;
253
254 p = (struct termp *)arg;
255 p->tcol->rmargin = p->maxrmargin = p->defrmargin;
256 term_tab_set(p, NULL);
257 term_tab_set(p, "T");
258 term_tab_set(p, ".5i");
259
260 n = mdoc->first->child;
261 if (p->synopsisonly) {
262 for (nn = NULL; n != NULL; n = n->next) {
263 if (n->tok != MDOC_Sh)
264 continue;
265 if (n->sec == SEC_SYNOPSIS)
266 break;
267 if (nn == NULL && n->sec == SEC_NAME)
268 nn = n;
269 }
270 if (n == NULL)
271 n = nn;
272 p->flags |= TERMP_NOSPACE;
273 if (n != NULL && (n = n->child->next->child) != NULL)
274 print_mdoc_nodelist(p, NULL, mdoc, n);
275 term_newln(p);
276 } else {
277 term_begin(p, print_mdoc_head, print_mdoc_foot, mdoc);
278 while (n != NULL &&
279 (n->type == ROFFT_COMMENT ||
280 n->flags & NODE_NOPRT))
281 n = n->next;
282 if (n != NULL) {
283 if (n->tok != MDOC_Sh)
284 term_vspace(p);
285 print_mdoc_nodelist(p, NULL, mdoc, n);
286 }
287 term_end(p);
288 }
289 }
290
291 static void
print_mdoc_nodelist(DECL_ARGS)292 print_mdoc_nodelist(DECL_ARGS)
293 {
294 while (n != NULL) {
295 print_mdoc_node(p, pair, meta, n);
296 n = n->next;
297 }
298 }
299
300 static void
print_mdoc_node(DECL_ARGS)301 print_mdoc_node(DECL_ARGS)
302 {
303 const struct mdoc_term_act *act;
304 struct termpair npair;
305 size_t offset, rmargin;
306 int chld;
307
308 /*
309 * In no-fill mode, break the output line at the beginning
310 * of new input lines except after \c, and nowhere else.
311 */
312
313 if (n->flags & NODE_NOFILL) {
314 if (n->flags & NODE_LINE &&
315 (p->flags & TERMP_NONEWLINE) == 0)
316 term_newln(p);
317 p->flags |= TERMP_BRNEVER;
318 } else {
319 if (n->flags & NODE_LINE)
320 term_tab_ref(p);
321 p->flags &= ~TERMP_BRNEVER;
322 }
323
324 if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
325 return;
326
327 chld = 1;
328 offset = p->tcol->offset;
329 rmargin = p->tcol->rmargin;
330 n->flags &= ~NODE_ENDED;
331 n->prev_font = p->fonti;
332
333 memset(&npair, 0, sizeof(struct termpair));
334 npair.ppair = pair;
335
336 if (n->flags & NODE_ID && n->tok != MDOC_Pp &&
337 (n->tok != MDOC_It || n->type != ROFFT_BLOCK))
338 term_tag_write(n, p->line);
339
340 /*
341 * Keeps only work until the end of a line. If a keep was
342 * invoked in a prior line, revert it to PREKEEP.
343 */
344
345 if (p->flags & TERMP_KEEP && n->flags & NODE_LINE) {
346 p->flags &= ~TERMP_KEEP;
347 p->flags |= TERMP_PREKEEP;
348 }
349
350 /*
351 * After the keep flags have been set up, we may now
352 * produce output. Note that some pre-handlers do so.
353 */
354
355 act = NULL;
356 switch (n->type) {
357 case ROFFT_TEXT:
358 if (n->flags & NODE_LINE) {
359 switch (*n->string) {
360 case '\0':
361 if (p->flags & TERMP_NONEWLINE)
362 term_newln(p);
363 else
364 term_vspace(p);
365 return;
366 case ' ':
367 if ((p->flags & TERMP_NONEWLINE) == 0)
368 term_newln(p);
369 break;
370 default:
371 break;
372 }
373 }
374 if (NODE_DELIMC & n->flags)
375 p->flags |= TERMP_NOSPACE;
376 term_word(p, n->string);
377 if (NODE_DELIMO & n->flags)
378 p->flags |= TERMP_NOSPACE;
379 break;
380 case ROFFT_EQN:
381 if ( ! (n->flags & NODE_LINE))
382 p->flags |= TERMP_NOSPACE;
383 term_eqn(p, n->eqn);
384 if (n->next != NULL && ! (n->next->flags & NODE_LINE))
385 p->flags |= TERMP_NOSPACE;
386 break;
387 case ROFFT_TBL:
388 if (p->tbl.cols == NULL)
389 term_newln(p);
390 term_tbl(p, n->span);
391 break;
392 default:
393 if (n->tok < ROFF_MAX) {
394 roff_term_pre(p, n);
395 return;
396 }
397 assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
398 act = mdoc_term_acts + (n->tok - MDOC_Dd);
399 if (act->pre != NULL &&
400 (n->end == ENDBODY_NOT || n->child != NULL))
401 chld = (*act->pre)(p, &npair, meta, n);
402 break;
403 }
404
405 if (chld && n->child)
406 print_mdoc_nodelist(p, &npair, meta, n->child);
407
408 term_fontpopq(p,
409 (ENDBODY_NOT == n->end ? n : n->body)->prev_font);
410
411 switch (n->type) {
412 case ROFFT_TEXT:
413 break;
414 case ROFFT_TBL:
415 break;
416 case ROFFT_EQN:
417 break;
418 default:
419 if (act->post == NULL || n->flags & NODE_ENDED)
420 break;
421 (void)(*act->post)(p, &npair, meta, n);
422
423 /*
424 * Explicit end tokens not only call the post
425 * handler, but also tell the respective block
426 * that it must not call the post handler again.
427 */
428 if (ENDBODY_NOT != n->end)
429 n->body->flags |= NODE_ENDED;
430 break;
431 }
432
433 if (NODE_EOS & n->flags)
434 p->flags |= TERMP_SENTENCE;
435
436 if (n->type != ROFFT_TEXT)
437 p->tcol->offset = offset;
438 p->tcol->rmargin = rmargin;
439 }
440
441 static void
print_mdoc_foot(struct termp * p,const struct roff_meta * meta)442 print_mdoc_foot(struct termp *p, const struct roff_meta *meta)
443 {
444 size_t sz;
445
446 term_fontrepl(p, TERMFONT_NONE);
447
448 /*
449 * Output the footer in new-groff style, that is, three columns
450 * with the middle being the manual date and flanking columns
451 * being the operating system:
452 *
453 * SYSTEM DATE SYSTEM
454 */
455
456 term_vspace(p);
457
458 p->tcol->offset = 0;
459 sz = term_strlen(p, meta->date);
460 p->tcol->rmargin = p->maxrmargin > sz ?
461 (p->maxrmargin + term_len(p, 1) - sz) / 2 : 0;
462 p->trailspace = 1;
463 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
464
465 term_word(p, meta->os);
466 term_flushln(p);
467
468 p->tcol->offset = p->tcol->rmargin;
469 sz = term_strlen(p, meta->os);
470 p->tcol->rmargin = p->maxrmargin > sz ? p->maxrmargin - sz : 0;
471 p->flags |= TERMP_NOSPACE;
472
473 term_word(p, meta->date);
474 term_flushln(p);
475
476 p->tcol->offset = p->tcol->rmargin;
477 p->tcol->rmargin = p->maxrmargin;
478 p->trailspace = 0;
479 p->flags &= ~TERMP_NOBREAK;
480 p->flags |= TERMP_NOSPACE;
481
482 term_word(p, meta->os);
483 term_flushln(p);
484
485 p->tcol->offset = 0;
486 p->tcol->rmargin = p->maxrmargin;
487 p->flags = 0;
488 }
489
490 static void
print_mdoc_head(struct termp * p,const struct roff_meta * meta)491 print_mdoc_head(struct termp *p, const struct roff_meta *meta)
492 {
493 char *volume, *title;
494 size_t vollen, titlen;
495
496 /*
497 * The header is strange. It has three components, which are
498 * really two with the first duplicated. It goes like this:
499 *
500 * IDENTIFIER TITLE IDENTIFIER
501 *
502 * The IDENTIFIER is NAME(SECTION), which is the command-name
503 * (if given, or "unknown" if not) followed by the manual page
504 * section. These are given in `Dt'. The TITLE is a free-form
505 * string depending on the manual volume. If not specified, it
506 * switches on the manual section.
507 */
508
509 assert(meta->vol);
510 if (NULL == meta->arch)
511 volume = mandoc_strdup(meta->vol);
512 else
513 mandoc_asprintf(&volume, "%s (%s)",
514 meta->vol, meta->arch);
515 vollen = term_strlen(p, volume);
516
517 if (NULL == meta->msec)
518 title = mandoc_strdup(meta->title);
519 else
520 mandoc_asprintf(&title, "%s(%s)",
521 meta->title, meta->msec);
522 titlen = term_strlen(p, title);
523
524 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
525 p->trailspace = 1;
526 p->tcol->offset = 0;
527 p->tcol->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
528 (p->maxrmargin - vollen + term_len(p, 1)) / 2 :
529 vollen < p->maxrmargin ? p->maxrmargin - vollen : 0;
530
531 term_word(p, title);
532 term_flushln(p);
533
534 p->flags |= TERMP_NOSPACE;
535 p->tcol->offset = p->tcol->rmargin;
536 p->tcol->rmargin = p->tcol->offset + vollen + titlen <
537 p->maxrmargin ? p->maxrmargin - titlen : p->maxrmargin;
538
539 term_word(p, volume);
540 term_flushln(p);
541
542 p->flags &= ~TERMP_NOBREAK;
543 p->trailspace = 0;
544 if (p->tcol->rmargin + titlen <= p->maxrmargin) {
545 p->flags |= TERMP_NOSPACE;
546 p->tcol->offset = p->tcol->rmargin;
547 p->tcol->rmargin = p->maxrmargin;
548 term_word(p, title);
549 term_flushln(p);
550 }
551
552 p->flags &= ~TERMP_NOSPACE;
553 p->tcol->offset = 0;
554 p->tcol->rmargin = p->maxrmargin;
555 free(title);
556 free(volume);
557 }
558
559 static int
a2width(const struct termp * p,const char * v)560 a2width(const struct termp *p, const char *v)
561 {
562 struct roffsu su;
563 const char *end;
564
565 end = a2roffsu(v, &su, SCALE_MAX);
566 if (end == NULL || *end != '\0') {
567 su.unit = SCALE_EN;
568 su.scale = term_strlen(p, v) / term_strlen(p, "0");
569 }
570 return term_hen(p, &su);
571 }
572
573 /*
574 * Determine how much space to print out before block elements of `It'
575 * (and thus `Bl') and `Bd'. And then go ahead and print that space,
576 * too.
577 */
578 static void
print_bvspace(struct termp * p,struct roff_node * bl,struct roff_node * n)579 print_bvspace(struct termp *p, struct roff_node *bl, struct roff_node *n)
580 {
581 struct roff_node *nn;
582
583 term_newln(p);
584
585 if ((bl->tok == MDOC_Bd && bl->norm->Bd.comp) ||
586 (bl->tok == MDOC_Bl && bl->norm->Bl.comp))
587 return;
588
589 /* Do not vspace directly after Ss/Sh. */
590
591 nn = n;
592 while (roff_node_prev(nn) == NULL) {
593 do {
594 nn = nn->parent;
595 if (nn->type == ROFFT_ROOT)
596 return;
597 } while (nn->type != ROFFT_BLOCK);
598 if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
599 return;
600 if (nn->tok == MDOC_It &&
601 nn->parent->parent->norm->Bl.type != LIST_item)
602 break;
603 }
604
605 /*
606 * No vertical space after:
607 * items in .Bl -column
608 * items without a body in .Bl -diag
609 */
610
611 if (bl->tok != MDOC_Bl ||
612 n->prev == NULL || n->prev->tok != MDOC_It ||
613 (bl->norm->Bl.type != LIST_column &&
614 (bl->norm->Bl.type != LIST_diag ||
615 n->prev->body->child != NULL)))
616 term_vspace(p);
617 }
618
619
620 static int
termp_it_pre(DECL_ARGS)621 termp_it_pre(DECL_ARGS)
622 {
623 struct roffsu su;
624 char buf[24];
625 const struct roff_node *bl, *nn;
626 size_t ncols, dcol;
627 int i, offset, width;
628 enum mdoc_list type;
629
630 if (n->type == ROFFT_BLOCK) {
631 print_bvspace(p, n->parent->parent, n);
632 if (n->flags & NODE_ID)
633 term_tag_write(n, p->line);
634 return 1;
635 }
636
637 bl = n->parent->parent->parent;
638 type = bl->norm->Bl.type;
639
640 /*
641 * Defaults for specific list types.
642 */
643
644 switch (type) {
645 case LIST_bullet:
646 case LIST_dash:
647 case LIST_hyphen:
648 case LIST_enum:
649 width = term_len(p, 2);
650 break;
651 case LIST_hang:
652 case LIST_tag:
653 width = term_len(p, 8);
654 break;
655 case LIST_column:
656 width = term_len(p, 10);
657 break;
658 default:
659 width = 0;
660 break;
661 }
662 offset = 0;
663
664 /*
665 * First calculate width and offset. This is pretty easy unless
666 * we're a -column list, in which case all prior columns must
667 * be accounted for.
668 */
669
670 if (bl->norm->Bl.offs != NULL) {
671 offset = a2width(p, bl->norm->Bl.offs);
672 if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
673 offset = -p->tcol->offset;
674 else if (offset > SHRT_MAX)
675 offset = 0;
676 }
677
678 switch (type) {
679 case LIST_column:
680 if (n->type == ROFFT_HEAD)
681 break;
682
683 /*
684 * Imitate groff's column handling:
685 * - For each earlier column, add its width.
686 * - For less than 5 columns, add four more blanks per
687 * column.
688 * - For exactly 5 columns, add three more blank per
689 * column.
690 * - For more than 5 columns, add only one column.
691 */
692 ncols = bl->norm->Bl.ncols;
693 dcol = ncols < 5 ? term_len(p, 4) :
694 ncols == 5 ? term_len(p, 3) : term_len(p, 1);
695
696 /*
697 * Calculate the offset by applying all prior ROFFT_BODY,
698 * so we stop at the ROFFT_HEAD (nn->prev == NULL).
699 */
700
701 for (i = 0, nn = n->prev;
702 nn->prev && i < (int)ncols;
703 nn = nn->prev, i++) {
704 su.unit = SCALE_EN;
705 su.scale = term_strlen(p, bl->norm->Bl.cols[i]) /
706 term_strlen(p, "0");
707 offset += term_hen(p, &su) + dcol;
708 }
709
710 /*
711 * When exceeding the declared number of columns, leave
712 * the remaining widths at 0. This will later be
713 * adjusted to the default width of 10, or, for the last
714 * column, stretched to the right margin.
715 */
716 if (i >= (int)ncols)
717 break;
718
719 /*
720 * Use the declared column widths, extended as explained
721 * in the preceding paragraph.
722 */
723 su.unit = SCALE_EN;
724 su.scale = term_strlen(p, bl->norm->Bl.cols[i]) /
725 term_strlen(p, "0");
726 width = term_hen(p, &su) + dcol;
727 break;
728 default:
729 if (NULL == bl->norm->Bl.width)
730 break;
731
732 /*
733 * Note: buffer the width by 2, which is groff's magic
734 * number for buffering single arguments. See the above
735 * handling for column for how this changes.
736 */
737 width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
738 if (width < 0 && (size_t)(-width) > p->tcol->offset)
739 width = -p->tcol->offset;
740 else if (width > SHRT_MAX)
741 width = 0;
742 break;
743 }
744
745 /*
746 * Whitespace control. Inset bodies need an initial space,
747 * while diagonal bodies need two.
748 */
749
750 p->flags |= TERMP_NOSPACE;
751
752 switch (type) {
753 case LIST_diag:
754 if (n->type == ROFFT_BODY)
755 term_word(p, "\\ \\ ");
756 break;
757 case LIST_inset:
758 if (n->type == ROFFT_BODY && n->parent->head->child != NULL)
759 term_word(p, "\\ ");
760 break;
761 default:
762 break;
763 }
764
765 p->flags |= TERMP_NOSPACE;
766
767 switch (type) {
768 case LIST_diag:
769 if (n->type == ROFFT_HEAD)
770 term_fontpush(p, TERMFONT_BOLD);
771 break;
772 default:
773 break;
774 }
775
776 /*
777 * Pad and break control. This is the tricky part. These flags
778 * are documented in term_flushln() in term.c. Note that we're
779 * going to unset all of these flags in termp_it_post() when we
780 * exit.
781 */
782
783 switch (type) {
784 case LIST_enum:
785 case LIST_bullet:
786 case LIST_dash:
787 case LIST_hyphen:
788 if (n->type == ROFFT_HEAD) {
789 p->flags |= TERMP_NOBREAK | TERMP_HANG;
790 p->trailspace = 1;
791 } else if (width <= (int)term_len(p, 2))
792 p->flags |= TERMP_NOPAD;
793 break;
794 case LIST_hang:
795 if (n->type != ROFFT_HEAD)
796 break;
797 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
798 p->trailspace = 1;
799 break;
800 case LIST_tag:
801 if (n->type != ROFFT_HEAD)
802 break;
803
804 p->flags |= TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND;
805 p->trailspace = 2;
806
807 if (NULL == n->next || NULL == n->next->child)
808 p->flags |= TERMP_HANG;
809 break;
810 case LIST_column:
811 if (n->type == ROFFT_HEAD)
812 break;
813
814 if (NULL == n->next) {
815 p->flags &= ~TERMP_NOBREAK;
816 p->trailspace = 0;
817 } else {
818 p->flags |= TERMP_NOBREAK;
819 p->trailspace = 1;
820 }
821
822 break;
823 case LIST_diag:
824 if (n->type != ROFFT_HEAD)
825 break;
826 p->flags |= TERMP_NOBREAK | TERMP_BRIND;
827 p->trailspace = 1;
828 break;
829 default:
830 break;
831 }
832
833 /*
834 * Margin control. Set-head-width lists have their right
835 * margins shortened. The body for these lists has the offset
836 * necessarily lengthened. Everybody gets the offset.
837 */
838
839 p->tcol->offset += offset;
840
841 switch (type) {
842 case LIST_bullet:
843 case LIST_dash:
844 case LIST_enum:
845 case LIST_hyphen:
846 case LIST_hang:
847 case LIST_tag:
848 if (n->type == ROFFT_HEAD)
849 p->tcol->rmargin = p->tcol->offset + width;
850 else
851 p->tcol->offset += width;
852 break;
853 case LIST_column:
854 assert(width);
855 p->tcol->rmargin = p->tcol->offset + width;
856 /*
857 * XXX - this behaviour is not documented: the
858 * right-most column is filled to the right margin.
859 */
860 if (n->type == ROFFT_HEAD)
861 break;
862 if (n->next == NULL && p->tcol->rmargin < p->maxrmargin)
863 p->tcol->rmargin = p->maxrmargin;
864 break;
865 default:
866 break;
867 }
868
869 /*
870 * The dash, hyphen, bullet and enum lists all have a special
871 * HEAD character (temporarily bold, in some cases).
872 */
873
874 if (n->type == ROFFT_HEAD)
875 switch (type) {
876 case LIST_bullet:
877 term_fontpush(p, TERMFONT_BOLD);
878 term_word(p, "\\[bu]");
879 term_fontpop(p);
880 break;
881 case LIST_dash:
882 case LIST_hyphen:
883 term_fontpush(p, TERMFONT_BOLD);
884 term_word(p, "-");
885 term_fontpop(p);
886 break;
887 case LIST_enum:
888 (pair->ppair->ppair->count)++;
889 (void)snprintf(buf, sizeof(buf), "%d.",
890 pair->ppair->ppair->count);
891 term_word(p, buf);
892 break;
893 default:
894 break;
895 }
896
897 /*
898 * If we're not going to process our children, indicate so here.
899 */
900
901 switch (type) {
902 case LIST_bullet:
903 case LIST_item:
904 case LIST_dash:
905 case LIST_hyphen:
906 case LIST_enum:
907 if (n->type == ROFFT_HEAD)
908 return 0;
909 break;
910 case LIST_column:
911 if (n->type == ROFFT_HEAD)
912 return 0;
913 p->minbl = 0;
914 break;
915 default:
916 break;
917 }
918
919 return 1;
920 }
921
922 static void
termp_it_post(DECL_ARGS)923 termp_it_post(DECL_ARGS)
924 {
925 enum mdoc_list type;
926
927 if (n->type == ROFFT_BLOCK)
928 return;
929
930 type = n->parent->parent->parent->norm->Bl.type;
931
932 switch (type) {
933 case LIST_item:
934 case LIST_diag:
935 case LIST_inset:
936 if (n->type == ROFFT_BODY)
937 term_newln(p);
938 break;
939 case LIST_column:
940 if (n->type == ROFFT_BODY)
941 term_flushln(p);
942 break;
943 default:
944 term_newln(p);
945 break;
946 }
947
948 /*
949 * Now that our output is flushed, we can reset our tags. Since
950 * only `It' sets these flags, we're free to assume that nobody
951 * has munged them in the meanwhile.
952 */
953
954 p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND | TERMP_HANG);
955 p->trailspace = 0;
956 }
957
958 static int
termp_nm_pre(DECL_ARGS)959 termp_nm_pre(DECL_ARGS)
960 {
961 const char *cp;
962
963 if (n->type == ROFFT_BLOCK) {
964 p->flags |= TERMP_PREKEEP;
965 return 1;
966 }
967
968 if (n->type == ROFFT_BODY) {
969 if (n->child == NULL)
970 return 0;
971 p->flags |= TERMP_NOSPACE;
972 cp = NULL;
973 if (n->prev->child != NULL)
974 cp = n->prev->child->string;
975 if (cp == NULL)
976 cp = meta->name;
977 if (cp == NULL)
978 p->tcol->offset += term_len(p, 6);
979 else
980 p->tcol->offset += term_len(p, 1) +
981 term_strlen(p, cp);
982 return 1;
983 }
984
985 if (n->child == NULL)
986 return 0;
987
988 if (n->type == ROFFT_HEAD)
989 synopsis_pre(p, n->parent);
990
991 if (n->type == ROFFT_HEAD &&
992 n->next != NULL && n->next->child != NULL) {
993 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK | TERMP_BRIND;
994 p->trailspace = 1;
995 p->tcol->rmargin = p->tcol->offset + term_len(p, 1);
996 if (n->child == NULL)
997 p->tcol->rmargin += term_strlen(p, meta->name);
998 else if (n->child->type == ROFFT_TEXT) {
999 p->tcol->rmargin += term_strlen(p, n->child->string);
1000 if (n->child->next != NULL)
1001 p->flags |= TERMP_HANG;
1002 } else {
1003 p->tcol->rmargin += term_len(p, 5);
1004 p->flags |= TERMP_HANG;
1005 }
1006 }
1007 return termp_bold_pre(p, pair, meta, n);
1008 }
1009
1010 static void
termp_nm_post(DECL_ARGS)1011 termp_nm_post(DECL_ARGS)
1012 {
1013 switch (n->type) {
1014 case ROFFT_BLOCK:
1015 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1016 break;
1017 case ROFFT_HEAD:
1018 if (n->next == NULL || n->next->child == NULL)
1019 break;
1020 term_flushln(p);
1021 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1022 p->trailspace = 0;
1023 break;
1024 case ROFFT_BODY:
1025 if (n->child != NULL)
1026 term_flushln(p);
1027 break;
1028 default:
1029 break;
1030 }
1031 }
1032
1033 static int
termp_fl_pre(DECL_ARGS)1034 termp_fl_pre(DECL_ARGS)
1035 {
1036 struct roff_node *nn;
1037
1038 term_fontpush(p, TERMFONT_BOLD);
1039 term_word(p, "\\-");
1040
1041 if (n->child != NULL ||
1042 ((nn = roff_node_next(n)) != NULL &&
1043 nn->type != ROFFT_TEXT &&
1044 (nn->flags & NODE_LINE) == 0))
1045 p->flags |= TERMP_NOSPACE;
1046
1047 return 1;
1048 }
1049
1050 static int
termp__a_pre(DECL_ARGS)1051 termp__a_pre(DECL_ARGS)
1052 {
1053 struct roff_node *nn;
1054
1055 if ((nn = roff_node_prev(n)) != NULL && nn->tok == MDOC__A &&
1056 ((nn = roff_node_next(n)) == NULL || nn->tok != MDOC__A))
1057 term_word(p, "and");
1058
1059 return 1;
1060 }
1061
1062 static int
termp_an_pre(DECL_ARGS)1063 termp_an_pre(DECL_ARGS)
1064 {
1065
1066 if (n->norm->An.auth == AUTH_split) {
1067 p->flags &= ~TERMP_NOSPLIT;
1068 p->flags |= TERMP_SPLIT;
1069 return 0;
1070 }
1071 if (n->norm->An.auth == AUTH_nosplit) {
1072 p->flags &= ~TERMP_SPLIT;
1073 p->flags |= TERMP_NOSPLIT;
1074 return 0;
1075 }
1076
1077 if (p->flags & TERMP_SPLIT)
1078 term_newln(p);
1079
1080 if (n->sec == SEC_AUTHORS && ! (p->flags & TERMP_NOSPLIT))
1081 p->flags |= TERMP_SPLIT;
1082
1083 return 1;
1084 }
1085
1086 static int
termp_ns_pre(DECL_ARGS)1087 termp_ns_pre(DECL_ARGS)
1088 {
1089
1090 if ( ! (NODE_LINE & n->flags))
1091 p->flags |= TERMP_NOSPACE;
1092 return 1;
1093 }
1094
1095 static int
termp_rs_pre(DECL_ARGS)1096 termp_rs_pre(DECL_ARGS)
1097 {
1098 if (SEC_SEE_ALSO != n->sec)
1099 return 1;
1100 if (n->type == ROFFT_BLOCK && roff_node_prev(n) != NULL)
1101 term_vspace(p);
1102 return 1;
1103 }
1104
1105 static int
termp_ex_pre(DECL_ARGS)1106 termp_ex_pre(DECL_ARGS)
1107 {
1108 term_newln(p);
1109 return 1;
1110 }
1111
1112 static int
termp_nd_pre(DECL_ARGS)1113 termp_nd_pre(DECL_ARGS)
1114 {
1115 if (n->type == ROFFT_BODY)
1116 term_word(p, "\\(en");
1117 return 1;
1118 }
1119
1120 static int
termp_bl_pre(DECL_ARGS)1121 termp_bl_pre(DECL_ARGS)
1122 {
1123 switch (n->type) {
1124 case ROFFT_BLOCK:
1125 term_newln(p);
1126 return 1;
1127 case ROFFT_HEAD:
1128 return 0;
1129 default:
1130 return 1;
1131 }
1132 }
1133
1134 static void
termp_bl_post(DECL_ARGS)1135 termp_bl_post(DECL_ARGS)
1136 {
1137 if (n->type != ROFFT_BLOCK)
1138 return;
1139 term_newln(p);
1140 if (n->tok != MDOC_Bl || n->norm->Bl.type != LIST_column)
1141 return;
1142 term_tab_set(p, NULL);
1143 term_tab_set(p, "T");
1144 term_tab_set(p, ".5i");
1145 }
1146
1147 static int
termp_xr_pre(DECL_ARGS)1148 termp_xr_pre(DECL_ARGS)
1149 {
1150 if (NULL == (n = n->child))
1151 return 0;
1152
1153 assert(n->type == ROFFT_TEXT);
1154 term_word(p, n->string);
1155
1156 if (NULL == (n = n->next))
1157 return 0;
1158
1159 p->flags |= TERMP_NOSPACE;
1160 term_word(p, "(");
1161 p->flags |= TERMP_NOSPACE;
1162
1163 assert(n->type == ROFFT_TEXT);
1164 term_word(p, n->string);
1165
1166 p->flags |= TERMP_NOSPACE;
1167 term_word(p, ")");
1168
1169 return 0;
1170 }
1171
1172 /*
1173 * This decides how to assert whitespace before any of the SYNOPSIS set
1174 * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
1175 * macro combos).
1176 */
1177 static void
synopsis_pre(struct termp * p,struct roff_node * n)1178 synopsis_pre(struct termp *p, struct roff_node *n)
1179 {
1180 struct roff_node *np;
1181
1182 if ((n->flags & NODE_SYNPRETTY) == 0 ||
1183 (np = roff_node_prev(n)) == NULL)
1184 return;
1185
1186 /*
1187 * If we're the second in a pair of like elements, emit our
1188 * newline and return. UNLESS we're `Fo', `Fn', `Fn', in which
1189 * case we soldier on.
1190 */
1191 if (np->tok == n->tok &&
1192 MDOC_Ft != n->tok &&
1193 MDOC_Fo != n->tok &&
1194 MDOC_Fn != n->tok) {
1195 term_newln(p);
1196 return;
1197 }
1198
1199 /*
1200 * If we're one of the SYNOPSIS set and non-like pair-wise after
1201 * another (or Fn/Fo, which we've let slip through) then assert
1202 * vertical space, else only newline and move on.
1203 */
1204 switch (np->tok) {
1205 case MDOC_Fd:
1206 case MDOC_Fn:
1207 case MDOC_Fo:
1208 case MDOC_In:
1209 case MDOC_Vt:
1210 term_vspace(p);
1211 break;
1212 case MDOC_Ft:
1213 if (n->tok != MDOC_Fn && n->tok != MDOC_Fo) {
1214 term_vspace(p);
1215 break;
1216 }
1217 /* FALLTHROUGH */
1218 default:
1219 term_newln(p);
1220 break;
1221 }
1222 }
1223
1224 static int
termp_vt_pre(DECL_ARGS)1225 termp_vt_pre(DECL_ARGS)
1226 {
1227 switch (n->type) {
1228 case ROFFT_ELEM:
1229 return termp_ft_pre(p, pair, meta, n);
1230 case ROFFT_BLOCK:
1231 synopsis_pre(p, n);
1232 return 1;
1233 case ROFFT_HEAD:
1234 return 0;
1235 default:
1236 return termp_under_pre(p, pair, meta, n);
1237 }
1238 }
1239
1240 static int
termp_bold_pre(DECL_ARGS)1241 termp_bold_pre(DECL_ARGS)
1242 {
1243 term_fontpush(p, TERMFONT_BOLD);
1244 return 1;
1245 }
1246
1247 static int
termp_fd_pre(DECL_ARGS)1248 termp_fd_pre(DECL_ARGS)
1249 {
1250 synopsis_pre(p, n);
1251 return termp_bold_pre(p, pair, meta, n);
1252 }
1253
1254 static void
termp_fd_post(DECL_ARGS)1255 termp_fd_post(DECL_ARGS)
1256 {
1257 term_newln(p);
1258 }
1259
1260 static int
termp_sh_pre(DECL_ARGS)1261 termp_sh_pre(DECL_ARGS)
1262 {
1263 struct roff_node *np;
1264
1265 switch (n->type) {
1266 case ROFFT_BLOCK:
1267 /*
1268 * Vertical space before sections, except
1269 * when the previous section was empty.
1270 */
1271 if ((np = roff_node_prev(n)) == NULL ||
1272 np->tok != MDOC_Sh ||
1273 (np->body != NULL && np->body->child != NULL))
1274 term_vspace(p);
1275 break;
1276 case ROFFT_HEAD:
1277 return termp_bold_pre(p, pair, meta, n);
1278 case ROFFT_BODY:
1279 p->tcol->offset = term_len(p, p->defindent);
1280 term_tab_set(p, NULL);
1281 term_tab_set(p, "T");
1282 term_tab_set(p, ".5i");
1283 if (n->sec == SEC_AUTHORS)
1284 p->flags &= ~(TERMP_SPLIT|TERMP_NOSPLIT);
1285 break;
1286 default:
1287 break;
1288 }
1289 return 1;
1290 }
1291
1292 static void
termp_sh_post(DECL_ARGS)1293 termp_sh_post(DECL_ARGS)
1294 {
1295 switch (n->type) {
1296 case ROFFT_HEAD:
1297 term_newln(p);
1298 break;
1299 case ROFFT_BODY:
1300 term_newln(p);
1301 p->tcol->offset = 0;
1302 break;
1303 default:
1304 break;
1305 }
1306 }
1307
1308 static void
termp_lb_post(DECL_ARGS)1309 termp_lb_post(DECL_ARGS)
1310 {
1311 if (n->sec == SEC_LIBRARY && n->flags & NODE_LINE)
1312 term_newln(p);
1313 }
1314
1315 static int
termp_d1_pre(DECL_ARGS)1316 termp_d1_pre(DECL_ARGS)
1317 {
1318 if (n->type != ROFFT_BLOCK)
1319 return 1;
1320 term_newln(p);
1321 p->tcol->offset += term_len(p, p->defindent + 1);
1322 term_tab_set(p, NULL);
1323 term_tab_set(p, "T");
1324 term_tab_set(p, ".5i");
1325 return 1;
1326 }
1327
1328 static int
termp_ft_pre(DECL_ARGS)1329 termp_ft_pre(DECL_ARGS)
1330 {
1331 synopsis_pre(p, n);
1332 return termp_under_pre(p, pair, meta, n);
1333 }
1334
1335 static int
termp_fn_pre(DECL_ARGS)1336 termp_fn_pre(DECL_ARGS)
1337 {
1338 size_t rmargin = 0;
1339 int pretty;
1340
1341 synopsis_pre(p, n);
1342 pretty = n->flags & NODE_SYNPRETTY;
1343 if ((n = n->child) == NULL)
1344 return 0;
1345
1346 if (pretty) {
1347 rmargin = p->tcol->rmargin;
1348 p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
1349 p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
1350 }
1351
1352 assert(n->type == ROFFT_TEXT);
1353 term_fontpush(p, TERMFONT_BOLD);
1354 term_word(p, n->string);
1355 term_fontpop(p);
1356
1357 if (pretty) {
1358 term_flushln(p);
1359 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
1360 p->flags |= TERMP_NOPAD;
1361 p->tcol->offset = p->tcol->rmargin;
1362 p->tcol->rmargin = rmargin;
1363 }
1364
1365 p->flags |= TERMP_NOSPACE;
1366 term_word(p, "(");
1367 p->flags |= TERMP_NOSPACE;
1368
1369 for (n = n->next; n; n = n->next) {
1370 assert(n->type == ROFFT_TEXT);
1371 term_fontpush(p, TERMFONT_UNDER);
1372 if (pretty)
1373 p->flags |= TERMP_NBRWORD;
1374 term_word(p, n->string);
1375 term_fontpop(p);
1376
1377 if (n->next) {
1378 p->flags |= TERMP_NOSPACE;
1379 term_word(p, ",");
1380 }
1381 }
1382
1383 p->flags |= TERMP_NOSPACE;
1384 term_word(p, ")");
1385
1386 if (pretty) {
1387 p->flags |= TERMP_NOSPACE;
1388 term_word(p, ";");
1389 term_flushln(p);
1390 }
1391 return 0;
1392 }
1393
1394 static int
termp_fa_pre(DECL_ARGS)1395 termp_fa_pre(DECL_ARGS)
1396 {
1397 const struct roff_node *nn;
1398
1399 if (n->parent->tok != MDOC_Fo)
1400 return termp_under_pre(p, pair, meta, n);
1401
1402 for (nn = n->child; nn != NULL; nn = nn->next) {
1403 term_fontpush(p, TERMFONT_UNDER);
1404 p->flags |= TERMP_NBRWORD;
1405 term_word(p, nn->string);
1406 term_fontpop(p);
1407 if (nn->next != NULL) {
1408 p->flags |= TERMP_NOSPACE;
1409 term_word(p, ",");
1410 }
1411 }
1412 if (n->child != NULL &&
1413 (nn = roff_node_next(n)) != NULL &&
1414 nn->tok == MDOC_Fa) {
1415 p->flags |= TERMP_NOSPACE;
1416 term_word(p, ",");
1417 }
1418 return 0;
1419 }
1420
1421 static int
termp_bd_pre(DECL_ARGS)1422 termp_bd_pre(DECL_ARGS)
1423 {
1424 int offset;
1425
1426 if (n->type == ROFFT_BLOCK) {
1427 print_bvspace(p, n, n);
1428 return 1;
1429 } else if (n->type == ROFFT_HEAD)
1430 return 0;
1431
1432 /* Handle the -offset argument. */
1433
1434 if (n->norm->Bd.offs == NULL ||
1435 ! strcmp(n->norm->Bd.offs, "left"))
1436 /* nothing */;
1437 else if ( ! strcmp(n->norm->Bd.offs, "indent"))
1438 p->tcol->offset += term_len(p, p->defindent + 1);
1439 else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
1440 p->tcol->offset += term_len(p, (p->defindent + 1) * 2);
1441 else {
1442 offset = a2width(p, n->norm->Bd.offs);
1443 if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
1444 p->tcol->offset = 0;
1445 else if (offset < SHRT_MAX)
1446 p->tcol->offset += offset;
1447 }
1448
1449 switch (n->norm->Bd.type) {
1450 case DISP_literal:
1451 term_tab_set(p, NULL);
1452 term_tab_set(p, "T");
1453 term_tab_set(p, "8n");
1454 break;
1455 case DISP_centered:
1456 p->flags |= TERMP_CENTER;
1457 break;
1458 default:
1459 break;
1460 }
1461 return 1;
1462 }
1463
1464 static void
termp_bd_post(DECL_ARGS)1465 termp_bd_post(DECL_ARGS)
1466 {
1467 if (n->type != ROFFT_BODY)
1468 return;
1469 if (n->norm->Bd.type == DISP_unfilled ||
1470 n->norm->Bd.type == DISP_literal)
1471 p->flags |= TERMP_BRNEVER;
1472 p->flags |= TERMP_NOSPACE;
1473 term_newln(p);
1474 p->flags &= ~TERMP_BRNEVER;
1475 if (n->norm->Bd.type == DISP_centered)
1476 p->flags &= ~TERMP_CENTER;
1477 }
1478
1479 static int
termp_xx_pre(DECL_ARGS)1480 termp_xx_pre(DECL_ARGS)
1481 {
1482 if ((n->aux = p->flags & TERMP_PREKEEP) == 0)
1483 p->flags |= TERMP_PREKEEP;
1484 return 1;
1485 }
1486
1487 static void
termp_xx_post(DECL_ARGS)1488 termp_xx_post(DECL_ARGS)
1489 {
1490 if (n->aux == 0)
1491 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1492 }
1493
1494 static void
termp_pf_post(DECL_ARGS)1495 termp_pf_post(DECL_ARGS)
1496 {
1497 if (n->next != NULL && (n->next->flags & NODE_LINE) == 0)
1498 p->flags |= TERMP_NOSPACE;
1499 }
1500
1501 static int
termp_ss_pre(DECL_ARGS)1502 termp_ss_pre(DECL_ARGS)
1503 {
1504 switch (n->type) {
1505 case ROFFT_BLOCK:
1506 if (roff_node_prev(n) == NULL)
1507 term_newln(p);
1508 else
1509 term_vspace(p);
1510 break;
1511 case ROFFT_HEAD:
1512 p->tcol->offset = term_len(p, (p->defindent+1)/2);
1513 return termp_bold_pre(p, pair, meta, n);
1514 case ROFFT_BODY:
1515 p->tcol->offset = term_len(p, p->defindent);
1516 term_tab_set(p, NULL);
1517 term_tab_set(p, "T");
1518 term_tab_set(p, ".5i");
1519 break;
1520 default:
1521 break;
1522 }
1523 return 1;
1524 }
1525
1526 static void
termp_ss_post(DECL_ARGS)1527 termp_ss_post(DECL_ARGS)
1528 {
1529 if (n->type == ROFFT_HEAD || n->type == ROFFT_BODY)
1530 term_newln(p);
1531 }
1532
1533 static int
termp_in_pre(DECL_ARGS)1534 termp_in_pre(DECL_ARGS)
1535 {
1536 synopsis_pre(p, n);
1537 if (n->flags & NODE_SYNPRETTY && n->flags & NODE_LINE) {
1538 term_fontpush(p, TERMFONT_BOLD);
1539 term_word(p, "#include");
1540 term_word(p, "<");
1541 } else {
1542 term_word(p, "<");
1543 term_fontpush(p, TERMFONT_UNDER);
1544 }
1545 p->flags |= TERMP_NOSPACE;
1546 return 1;
1547 }
1548
1549 static void
termp_in_post(DECL_ARGS)1550 termp_in_post(DECL_ARGS)
1551 {
1552 if (n->flags & NODE_SYNPRETTY)
1553 term_fontpush(p, TERMFONT_BOLD);
1554 p->flags |= TERMP_NOSPACE;
1555 term_word(p, ">");
1556 if (n->flags & NODE_SYNPRETTY)
1557 term_fontpop(p);
1558 }
1559
1560 static int
termp_pp_pre(DECL_ARGS)1561 termp_pp_pre(DECL_ARGS)
1562 {
1563 term_vspace(p);
1564 if (n->flags & NODE_ID)
1565 term_tag_write(n, p->line);
1566 return 0;
1567 }
1568
1569 static int
termp_skip_pre(DECL_ARGS)1570 termp_skip_pre(DECL_ARGS)
1571 {
1572 return 0;
1573 }
1574
1575 static int
termp_quote_pre(DECL_ARGS)1576 termp_quote_pre(DECL_ARGS)
1577 {
1578 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1579 return 1;
1580
1581 switch (n->tok) {
1582 case MDOC_Ao:
1583 case MDOC_Aq:
1584 term_word(p, n->child != NULL && n->child->next == NULL &&
1585 n->child->tok == MDOC_Mt ? "<" : "\\(la");
1586 break;
1587 case MDOC_Bro:
1588 case MDOC_Brq:
1589 term_word(p, "{");
1590 break;
1591 case MDOC_Oo:
1592 case MDOC_Op:
1593 case MDOC_Bo:
1594 case MDOC_Bq:
1595 term_word(p, "[");
1596 break;
1597 case MDOC__T:
1598 /* FALLTHROUGH */
1599 case MDOC_Do:
1600 case MDOC_Dq:
1601 term_word(p, "\\(lq");
1602 break;
1603 case MDOC_En:
1604 if (NULL == n->norm->Es ||
1605 NULL == n->norm->Es->child)
1606 return 1;
1607 term_word(p, n->norm->Es->child->string);
1608 break;
1609 case MDOC_Po:
1610 case MDOC_Pq:
1611 term_word(p, "(");
1612 break;
1613 case MDOC_Qo:
1614 case MDOC_Qq:
1615 term_word(p, "\"");
1616 break;
1617 case MDOC_Ql:
1618 case MDOC_So:
1619 case MDOC_Sq:
1620 term_word(p, "\\(oq");
1621 break;
1622 default:
1623 abort();
1624 }
1625
1626 p->flags |= TERMP_NOSPACE;
1627 return 1;
1628 }
1629
1630 static void
termp_quote_post(DECL_ARGS)1631 termp_quote_post(DECL_ARGS)
1632 {
1633
1634 if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1635 return;
1636
1637 p->flags |= TERMP_NOSPACE;
1638
1639 switch (n->tok) {
1640 case MDOC_Ao:
1641 case MDOC_Aq:
1642 term_word(p, n->child != NULL && n->child->next == NULL &&
1643 n->child->tok == MDOC_Mt ? ">" : "\\(ra");
1644 break;
1645 case MDOC_Bro:
1646 case MDOC_Brq:
1647 term_word(p, "}");
1648 break;
1649 case MDOC_Oo:
1650 case MDOC_Op:
1651 case MDOC_Bo:
1652 case MDOC_Bq:
1653 term_word(p, "]");
1654 break;
1655 case MDOC__T:
1656 /* FALLTHROUGH */
1657 case MDOC_Do:
1658 case MDOC_Dq:
1659 term_word(p, "\\(rq");
1660 break;
1661 case MDOC_En:
1662 if (n->norm->Es == NULL ||
1663 n->norm->Es->child == NULL ||
1664 n->norm->Es->child->next == NULL)
1665 p->flags &= ~TERMP_NOSPACE;
1666 else
1667 term_word(p, n->norm->Es->child->next->string);
1668 break;
1669 case MDOC_Po:
1670 case MDOC_Pq:
1671 term_word(p, ")");
1672 break;
1673 case MDOC_Qo:
1674 case MDOC_Qq:
1675 term_word(p, "\"");
1676 break;
1677 case MDOC_Ql:
1678 case MDOC_So:
1679 case MDOC_Sq:
1680 term_word(p, "\\(cq");
1681 break;
1682 default:
1683 abort();
1684 }
1685 }
1686
1687 static int
termp_eo_pre(DECL_ARGS)1688 termp_eo_pre(DECL_ARGS)
1689 {
1690
1691 if (n->type != ROFFT_BODY)
1692 return 1;
1693
1694 if (n->end == ENDBODY_NOT &&
1695 n->parent->head->child == NULL &&
1696 n->child != NULL &&
1697 n->child->end != ENDBODY_NOT)
1698 term_word(p, "\\&");
1699 else if (n->end != ENDBODY_NOT ? n->child != NULL :
1700 n->parent->head->child != NULL && (n->child != NULL ||
1701 (n->parent->tail != NULL && n->parent->tail->child != NULL)))
1702 p->flags |= TERMP_NOSPACE;
1703
1704 return 1;
1705 }
1706
1707 static void
termp_eo_post(DECL_ARGS)1708 termp_eo_post(DECL_ARGS)
1709 {
1710 int body, tail;
1711
1712 if (n->type != ROFFT_BODY)
1713 return;
1714
1715 if (n->end != ENDBODY_NOT) {
1716 p->flags &= ~TERMP_NOSPACE;
1717 return;
1718 }
1719
1720 body = n->child != NULL || n->parent->head->child != NULL;
1721 tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
1722
1723 if (body && tail)
1724 p->flags |= TERMP_NOSPACE;
1725 else if ( ! (body || tail))
1726 term_word(p, "\\&");
1727 else if ( ! tail)
1728 p->flags &= ~TERMP_NOSPACE;
1729 }
1730
1731 static int
termp_fo_pre(DECL_ARGS)1732 termp_fo_pre(DECL_ARGS)
1733 {
1734 size_t rmargin;
1735
1736 switch (n->type) {
1737 case ROFFT_BLOCK:
1738 synopsis_pre(p, n);
1739 return 1;
1740 case ROFFT_BODY:
1741 rmargin = p->tcol->rmargin;
1742 if (n->flags & NODE_SYNPRETTY) {
1743 p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
1744 p->flags |= TERMP_NOBREAK | TERMP_BRIND |
1745 TERMP_HANG;
1746 }
1747 p->flags |= TERMP_NOSPACE;
1748 term_word(p, "(");
1749 p->flags |= TERMP_NOSPACE;
1750 if (n->flags & NODE_SYNPRETTY) {
1751 term_flushln(p);
1752 p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND |
1753 TERMP_HANG);
1754 p->flags |= TERMP_NOPAD;
1755 p->tcol->offset = p->tcol->rmargin;
1756 p->tcol->rmargin = rmargin;
1757 }
1758 return 1;
1759 default:
1760 return termp_bold_pre(p, pair, meta, n);
1761 }
1762 }
1763
1764 static void
termp_fo_post(DECL_ARGS)1765 termp_fo_post(DECL_ARGS)
1766 {
1767 if (n->type != ROFFT_BODY)
1768 return;
1769
1770 p->flags |= TERMP_NOSPACE;
1771 term_word(p, ")");
1772
1773 if (n->flags & NODE_SYNPRETTY) {
1774 p->flags |= TERMP_NOSPACE;
1775 term_word(p, ";");
1776 term_flushln(p);
1777 }
1778 }
1779
1780 static int
termp_bf_pre(DECL_ARGS)1781 termp_bf_pre(DECL_ARGS)
1782 {
1783 switch (n->type) {
1784 case ROFFT_HEAD:
1785 return 0;
1786 case ROFFT_BODY:
1787 break;
1788 default:
1789 return 1;
1790 }
1791 switch (n->norm->Bf.font) {
1792 case FONT_Em:
1793 return termp_under_pre(p, pair, meta, n);
1794 case FONT_Sy:
1795 return termp_bold_pre(p, pair, meta, n);
1796 default:
1797 return termp_li_pre(p, pair, meta, n);
1798 }
1799 }
1800
1801 static int
termp_sm_pre(DECL_ARGS)1802 termp_sm_pre(DECL_ARGS)
1803 {
1804 if (n->child == NULL)
1805 p->flags ^= TERMP_NONOSPACE;
1806 else if (strcmp(n->child->string, "on") == 0)
1807 p->flags &= ~TERMP_NONOSPACE;
1808 else
1809 p->flags |= TERMP_NONOSPACE;
1810
1811 if (p->col && ! (TERMP_NONOSPACE & p->flags))
1812 p->flags &= ~TERMP_NOSPACE;
1813
1814 return 0;
1815 }
1816
1817 static int
termp_ap_pre(DECL_ARGS)1818 termp_ap_pre(DECL_ARGS)
1819 {
1820 p->flags |= TERMP_NOSPACE;
1821 term_word(p, "'");
1822 p->flags |= TERMP_NOSPACE;
1823 return 1;
1824 }
1825
1826 static void
termp____post(DECL_ARGS)1827 termp____post(DECL_ARGS)
1828 {
1829 struct roff_node *nn;
1830
1831 /*
1832 * Handle lists of authors. In general, print each followed by
1833 * a comma. Don't print the comma if there are only two
1834 * authors.
1835 */
1836 if (n->tok == MDOC__A &&
1837 (nn = roff_node_next(n)) != NULL && nn->tok == MDOC__A &&
1838 ((nn = roff_node_next(nn)) == NULL || nn->tok != MDOC__A) &&
1839 ((nn = roff_node_prev(n)) == NULL || nn->tok != MDOC__A))
1840 return;
1841
1842 /* TODO: %U. */
1843
1844 if (n->parent == NULL || n->parent->tok != MDOC_Rs)
1845 return;
1846
1847 p->flags |= TERMP_NOSPACE;
1848 if (roff_node_next(n) == NULL) {
1849 term_word(p, ".");
1850 p->flags |= TERMP_SENTENCE;
1851 } else
1852 term_word(p, ",");
1853 }
1854
1855 static int
termp_li_pre(DECL_ARGS)1856 termp_li_pre(DECL_ARGS)
1857 {
1858 term_fontpush(p, TERMFONT_NONE);
1859 return 1;
1860 }
1861
1862 static int
termp_lk_pre(DECL_ARGS)1863 termp_lk_pre(DECL_ARGS)
1864 {
1865 const struct roff_node *link, *descr, *punct;
1866
1867 if ((link = n->child) == NULL)
1868 return 0;
1869
1870 /* Find beginning of trailing punctuation. */
1871 punct = n->last;
1872 while (punct != link && punct->flags & NODE_DELIMC)
1873 punct = punct->prev;
1874 punct = punct->next;
1875
1876 /* Link text. */
1877 if ((descr = link->next) != NULL && descr != punct) {
1878 term_fontpush(p, TERMFONT_UNDER);
1879 while (descr != punct) {
1880 if (descr->flags & (NODE_DELIMC | NODE_DELIMO))
1881 p->flags |= TERMP_NOSPACE;
1882 term_word(p, descr->string);
1883 descr = descr->next;
1884 }
1885 term_fontpop(p);
1886 p->flags |= TERMP_NOSPACE;
1887 term_word(p, ":");
1888 }
1889
1890 /* Link target. */
1891 term_fontpush(p, TERMFONT_BOLD);
1892 term_word(p, link->string);
1893 term_fontpop(p);
1894
1895 /* Trailing punctuation. */
1896 while (punct != NULL) {
1897 p->flags |= TERMP_NOSPACE;
1898 term_word(p, punct->string);
1899 punct = punct->next;
1900 }
1901 return 0;
1902 }
1903
1904 static int
termp_bk_pre(DECL_ARGS)1905 termp_bk_pre(DECL_ARGS)
1906 {
1907 switch (n->type) {
1908 case ROFFT_BLOCK:
1909 break;
1910 case ROFFT_HEAD:
1911 return 0;
1912 case ROFFT_BODY:
1913 if (n->parent->args != NULL || n->prev->child == NULL)
1914 p->flags |= TERMP_PREKEEP;
1915 break;
1916 default:
1917 abort();
1918 }
1919 return 1;
1920 }
1921
1922 static void
termp_bk_post(DECL_ARGS)1923 termp_bk_post(DECL_ARGS)
1924 {
1925 if (n->type == ROFFT_BODY)
1926 p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
1927 }
1928
1929 /*
1930 * If we are in an `Rs' and there is a journal present,
1931 * then quote us instead of underlining us (for disambiguation).
1932 */
1933 static void
termp__t_post(DECL_ARGS)1934 termp__t_post(DECL_ARGS)
1935 {
1936 if (n->parent != NULL && n->parent->tok == MDOC_Rs &&
1937 n->parent->norm->Rs.quote_T)
1938 termp_quote_post(p, pair, meta, n);
1939 termp____post(p, pair, meta, n);
1940 }
1941
1942 static int
termp__t_pre(DECL_ARGS)1943 termp__t_pre(DECL_ARGS)
1944 {
1945 if (n->parent != NULL && n->parent->tok == MDOC_Rs &&
1946 n->parent->norm->Rs.quote_T)
1947 return termp_quote_pre(p, pair, meta, n);
1948 else
1949 return termp_under_pre(p, pair, meta, n);
1950 }
1951
1952 static int
termp_under_pre(DECL_ARGS)1953 termp_under_pre(DECL_ARGS)
1954 {
1955 term_fontpush(p, TERMFONT_UNDER);
1956 return 1;
1957 }
1958
1959 static int
termp_abort_pre(DECL_ARGS)1960 termp_abort_pre(DECL_ARGS)
1961 {
1962 abort();
1963 }
1964