1 /* $Id: man_term.c,v 1.139 2013/12/22 23:34:13 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010, 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
21
22 #include <sys/types.h>
23
24 #include <assert.h>
25 #include <ctype.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29
30 #include "mandoc.h"
31 #include "out.h"
32 #include "man.h"
33 #include "term.h"
34 #include "main.h"
35
36 #define MAXMARGINS 64 /* maximum number of indented scopes */
37
38 struct mtermp {
39 int fl;
40 #define MANT_LITERAL (1 << 0)
41 size_t lmargin[MAXMARGINS]; /* margins (incl. visible page) */
42 int lmargincur; /* index of current margin */
43 int lmarginsz; /* actual number of nested margins */
44 size_t offset; /* default offset to visible page */
45 int pardist; /* vert. space before par., unit: [v] */
46 };
47
48 #define DECL_ARGS struct termp *p, \
49 struct mtermp *mt, \
50 const struct man_node *n, \
51 const struct man_meta *meta
52
53 struct termact {
54 int (*pre)(DECL_ARGS);
55 void (*post)(DECL_ARGS);
56 int flags;
57 #define MAN_NOTEXT (1 << 0) /* Never has text children. */
58 };
59
60 static int a2width(const struct termp *, const char *);
61 static size_t a2height(const struct termp *, const char *);
62
63 static void print_man_nodelist(DECL_ARGS);
64 static void print_man_node(DECL_ARGS);
65 static void print_man_head(struct termp *, const void *);
66 static void print_man_foot(struct termp *, const void *);
67 static void print_bvspace(struct termp *,
68 const struct man_node *, int);
69
70 static int pre_B(DECL_ARGS);
71 static int pre_HP(DECL_ARGS);
72 static int pre_I(DECL_ARGS);
73 static int pre_IP(DECL_ARGS);
74 static int pre_OP(DECL_ARGS);
75 static int pre_PD(DECL_ARGS);
76 static int pre_PP(DECL_ARGS);
77 static int pre_RS(DECL_ARGS);
78 static int pre_SH(DECL_ARGS);
79 static int pre_SS(DECL_ARGS);
80 static int pre_TP(DECL_ARGS);
81 static int pre_UR(DECL_ARGS);
82 static int pre_alternate(DECL_ARGS);
83 static int pre_ft(DECL_ARGS);
84 static int pre_ign(DECL_ARGS);
85 static int pre_in(DECL_ARGS);
86 static int pre_literal(DECL_ARGS);
87 static int pre_sp(DECL_ARGS);
88
89 static void post_IP(DECL_ARGS);
90 static void post_HP(DECL_ARGS);
91 static void post_RS(DECL_ARGS);
92 static void post_SH(DECL_ARGS);
93 static void post_SS(DECL_ARGS);
94 static void post_TP(DECL_ARGS);
95 static void post_UR(DECL_ARGS);
96
97 static const struct termact termacts[MAN_MAX] = {
98 { pre_sp, NULL, MAN_NOTEXT }, /* br */
99 { NULL, NULL, 0 }, /* TH */
100 { pre_SH, post_SH, 0 }, /* SH */
101 { pre_SS, post_SS, 0 }, /* SS */
102 { pre_TP, post_TP, 0 }, /* TP */
103 { pre_PP, NULL, 0 }, /* LP */
104 { pre_PP, NULL, 0 }, /* PP */
105 { pre_PP, NULL, 0 }, /* P */
106 { pre_IP, post_IP, 0 }, /* IP */
107 { pre_HP, post_HP, 0 }, /* HP */
108 { NULL, NULL, 0 }, /* SM */
109 { pre_B, NULL, 0 }, /* SB */
110 { pre_alternate, NULL, 0 }, /* BI */
111 { pre_alternate, NULL, 0 }, /* IB */
112 { pre_alternate, NULL, 0 }, /* BR */
113 { pre_alternate, NULL, 0 }, /* RB */
114 { NULL, NULL, 0 }, /* R */
115 { pre_B, NULL, 0 }, /* B */
116 { pre_I, NULL, 0 }, /* I */
117 { pre_alternate, NULL, 0 }, /* IR */
118 { pre_alternate, NULL, 0 }, /* RI */
119 { pre_ign, NULL, MAN_NOTEXT }, /* na */
120 { pre_sp, NULL, MAN_NOTEXT }, /* sp */
121 { pre_literal, NULL, 0 }, /* nf */
122 { pre_literal, NULL, 0 }, /* fi */
123 { NULL, NULL, 0 }, /* RE */
124 { pre_RS, post_RS, 0 }, /* RS */
125 { pre_ign, NULL, 0 }, /* DT */
126 { pre_ign, NULL, 0 }, /* UC */
127 { pre_PD, NULL, MAN_NOTEXT }, /* PD */
128 { pre_ign, NULL, 0 }, /* AT */
129 { pre_in, NULL, MAN_NOTEXT }, /* in */
130 { pre_ft, NULL, MAN_NOTEXT }, /* ft */
131 { pre_OP, NULL, 0 }, /* OP */
132 { pre_literal, NULL, 0 }, /* EX */
133 { pre_literal, NULL, 0 }, /* EE */
134 { pre_UR, post_UR, 0 }, /* UR */
135 { NULL, NULL, 0 }, /* UE */
136 };
137
138
139
140 void
141 terminal_man(void *arg, const struct man *man)
142 {
143 struct termp *p;
144 const struct man_node *n;
145 const struct man_meta *meta;
146 struct mtermp mt;
147
148 p = (struct termp *)arg;
149
150 if (0 == p->defindent)
151 p->defindent = 7;
152
153 p->overstep = 0;
154 p->maxrmargin = p->defrmargin;
155 p->tabwidth = term_len(p, 5);
156
157 if (NULL == p->symtab)
158 p->symtab = mchars_alloc();
159
160 n = man_node(man);
161 meta = man_meta(man);
162
163 term_begin(p, print_man_head, print_man_foot, meta);
164 p->flags |= TERMP_NOSPACE;
165
166 memset(&mt, 0, sizeof(struct mtermp));
167
168 mt.lmargin[mt.lmargincur] = term_len(p, p->defindent);
169 mt.offset = term_len(p, p->defindent);
170 mt.pardist = 1;
171
172 if (n->child)
173 print_man_nodelist(p, &mt, n->child, meta);
174
175 term_end(p);
176 }
177
178
179 static size_t
180 a2height(const struct termp *p, const char *cp)
181 {
182 struct roffsu su;
183
184 if ( ! a2roffsu(cp, &su, SCALE_VS))
185 SCALE_VS_INIT(&su, atoi(cp));
186
187 return(term_vspan(p, &su));
188 }
189
190
191 static int
192 a2width(const struct termp *p, const char *cp)
193 {
194 struct roffsu su;
195
196 if ( ! a2roffsu(cp, &su, SCALE_BU))
197 return(-1);
198
199 return((int)term_hspan(p, &su));
200 }
201
202 /*
203 * Printing leading vertical space before a block.
204 * This is used for the paragraph macros.
205 * The rules are pretty simple, since there's very little nesting going
206 * on here. Basically, if we're the first within another block (SS/SH),
207 * then don't emit vertical space. If we are (RS), then do. If not the
208 * first, print it.
209 */
210 static void
211 print_bvspace(struct termp *p, const struct man_node *n, int pardist)
212 {
213 int i;
214
215 term_newln(p);
216
217 if (n->body && n->body->child)
218 if (MAN_TBL == n->body->child->type)
219 return;
220
221 if (MAN_ROOT == n->parent->type || MAN_RS != n->parent->tok)
222 if (NULL == n->prev)
223 return;
224
225 for (i = 0; i < pardist; i++)
226 term_vspace(p);
227 }
228
229 /* ARGSUSED */
230 static int
231 pre_ign(DECL_ARGS)
232 {
233
234 return(0);
235 }
236
237
238 /* ARGSUSED */
239 static int
240 pre_I(DECL_ARGS)
241 {
242
243 term_fontrepl(p, TERMFONT_UNDER);
244 return(1);
245 }
246
247
248 /* ARGSUSED */
249 static int
250 pre_literal(DECL_ARGS)
251 {
252
253 term_newln(p);
254
255 if (MAN_nf == n->tok || MAN_EX == n->tok)
256 mt->fl |= MANT_LITERAL;
257 else
258 mt->fl &= ~MANT_LITERAL;
259
260 /*
261 * Unlike .IP and .TP, .HP does not have a HEAD.
262 * So in case a second call to term_flushln() is needed,
263 * indentation has to be set up explicitly.
264 */
265 if (MAN_HP == n->parent->tok && p->rmargin < p->maxrmargin) {
266 p->offset = p->rmargin;
267 p->rmargin = p->maxrmargin;
268 p->trailspace = 0;
269 p->flags &= ~TERMP_NOBREAK;
270 p->flags |= TERMP_NOSPACE;
271 }
272
273 return(0);
274 }
275
276 /* ARGSUSED */
277 static int
278 pre_PD(DECL_ARGS)
279 {
280
281 n = n->child;
282 if (0 == n) {
283 mt->pardist = 1;
284 return(0);
285 }
286 assert(MAN_TEXT == n->type);
287 mt->pardist = atoi(n->string);
288 return(0);
289 }
290
291 /* ARGSUSED */
292 static int
293 pre_alternate(DECL_ARGS)
294 {
295 enum termfont font[2];
296 const struct man_node *nn;
297 int savelit, i;
298
299 switch (n->tok) {
300 case (MAN_RB):
301 font[0] = TERMFONT_NONE;
302 font[1] = TERMFONT_BOLD;
303 break;
304 case (MAN_RI):
305 font[0] = TERMFONT_NONE;
306 font[1] = TERMFONT_UNDER;
307 break;
308 case (MAN_BR):
309 font[0] = TERMFONT_BOLD;
310 font[1] = TERMFONT_NONE;
311 break;
312 case (MAN_BI):
313 font[0] = TERMFONT_BOLD;
314 font[1] = TERMFONT_UNDER;
315 break;
316 case (MAN_IR):
317 font[0] = TERMFONT_UNDER;
318 font[1] = TERMFONT_NONE;
319 break;
320 case (MAN_IB):
321 font[0] = TERMFONT_UNDER;
322 font[1] = TERMFONT_BOLD;
323 break;
324 default:
325 abort();
326 }
327
328 savelit = MANT_LITERAL & mt->fl;
329 mt->fl &= ~MANT_LITERAL;
330
331 for (i = 0, nn = n->child; nn; nn = nn->next, i = 1 - i) {
332 term_fontrepl(p, font[i]);
333 if (savelit && NULL == nn->next)
334 mt->fl |= MANT_LITERAL;
335 print_man_node(p, mt, nn, meta);
336 if (nn->next)
337 p->flags |= TERMP_NOSPACE;
338 }
339
340 return(0);
341 }
342
343 /* ARGSUSED */
344 static int
345 pre_B(DECL_ARGS)
346 {
347
348 term_fontrepl(p, TERMFONT_BOLD);
349 return(1);
350 }
351
352 /* ARGSUSED */
353 static int
354 pre_OP(DECL_ARGS)
355 {
356
357 term_word(p, "[");
358 p->flags |= TERMP_NOSPACE;
359
360 if (NULL != (n = n->child)) {
361 term_fontrepl(p, TERMFONT_BOLD);
362 term_word(p, n->string);
363 }
364 if (NULL != n && NULL != n->next) {
365 term_fontrepl(p, TERMFONT_UNDER);
366 term_word(p, n->next->string);
367 }
368
369 term_fontrepl(p, TERMFONT_NONE);
370 p->flags |= TERMP_NOSPACE;
371 term_word(p, "]");
372 return(0);
373 }
374
375 /* ARGSUSED */
376 static int
377 pre_ft(DECL_ARGS)
378 {
379 const char *cp;
380
381 if (NULL == n->child) {
382 term_fontlast(p);
383 return(0);
384 }
385
386 cp = n->child->string;
387 switch (*cp) {
388 case ('4'):
389 /* FALLTHROUGH */
390 case ('3'):
391 /* FALLTHROUGH */
392 case ('B'):
393 term_fontrepl(p, TERMFONT_BOLD);
394 break;
395 case ('2'):
396 /* FALLTHROUGH */
397 case ('I'):
398 term_fontrepl(p, TERMFONT_UNDER);
399 break;
400 case ('P'):
401 term_fontlast(p);
402 break;
403 case ('1'):
404 /* FALLTHROUGH */
405 case ('C'):
406 /* FALLTHROUGH */
407 case ('R'):
408 term_fontrepl(p, TERMFONT_NONE);
409 break;
410 default:
411 break;
412 }
413 return(0);
414 }
415
416 /* ARGSUSED */
417 static int
418 pre_in(DECL_ARGS)
419 {
420 int len, less;
421 size_t v;
422 const char *cp;
423
424 term_newln(p);
425
426 if (NULL == n->child) {
427 p->offset = mt->offset;
428 return(0);
429 }
430
431 cp = n->child->string;
432 less = 0;
433
434 if ('-' == *cp)
435 less = -1;
436 else if ('+' == *cp)
437 less = 1;
438 else
439 cp--;
440
441 if ((len = a2width(p, ++cp)) < 0)
442 return(0);
443
444 v = (size_t)len;
445
446 if (less < 0)
447 p->offset -= p->offset > v ? v : p->offset;
448 else if (less > 0)
449 p->offset += v;
450 else
451 p->offset = v;
452
453 /* Don't let this creep beyond the right margin. */
454
455 if (p->offset > p->rmargin)
456 p->offset = p->rmargin;
457
458 return(0);
459 }
460
461
462 /* ARGSUSED */
463 static int
464 pre_sp(DECL_ARGS)
465 {
466 char *s;
467 size_t i, len;
468 int neg;
469
470 if ((NULL == n->prev && n->parent)) {
471 switch (n->parent->tok) {
472 case (MAN_SH):
473 /* FALLTHROUGH */
474 case (MAN_SS):
475 /* FALLTHROUGH */
476 case (MAN_PP):
477 /* FALLTHROUGH */
478 case (MAN_LP):
479 /* FALLTHROUGH */
480 case (MAN_P):
481 /* FALLTHROUGH */
482 return(0);
483 default:
484 break;
485 }
486 }
487
488 neg = 0;
489 switch (n->tok) {
490 case (MAN_br):
491 len = 0;
492 break;
493 default:
494 if (NULL == n->child) {
495 len = 1;
496 break;
497 }
498 s = n->child->string;
499 if ('-' == *s) {
500 neg = 1;
501 s++;
502 }
503 len = a2height(p, s);
504 break;
505 }
506
507 if (0 == len)
508 term_newln(p);
509 else if (neg)
510 p->skipvsp += len;
511 else
512 for (i = 0; i < len; i++)
513 term_vspace(p);
514
515 return(0);
516 }
517
518
519 /* ARGSUSED */
520 static int
521 pre_HP(DECL_ARGS)
522 {
523 size_t len, one;
524 int ival;
525 const struct man_node *nn;
526
527 switch (n->type) {
528 case (MAN_BLOCK):
529 print_bvspace(p, n, mt->pardist);
530 return(1);
531 case (MAN_BODY):
532 break;
533 default:
534 return(0);
535 }
536
537 if ( ! (MANT_LITERAL & mt->fl)) {
538 p->flags |= TERMP_NOBREAK;
539 p->trailspace = 2;
540 }
541
542 len = mt->lmargin[mt->lmargincur];
543 ival = -1;
544
545 /* Calculate offset. */
546
547 if (NULL != (nn = n->parent->head->child))
548 if ((ival = a2width(p, nn->string)) >= 0)
549 len = (size_t)ival;
550
551 one = term_len(p, 1);
552 if (len < one)
553 len = one;
554
555 p->offset = mt->offset;
556 p->rmargin = mt->offset + len;
557
558 if (ival >= 0)
559 mt->lmargin[mt->lmargincur] = (size_t)ival;
560
561 return(1);
562 }
563
564
565 /* ARGSUSED */
566 static void
567 post_HP(DECL_ARGS)
568 {
569
570 switch (n->type) {
571 case (MAN_BODY):
572 term_newln(p);
573 p->flags &= ~TERMP_NOBREAK;
574 p->trailspace = 0;
575 p->offset = mt->offset;
576 p->rmargin = p->maxrmargin;
577 break;
578 default:
579 break;
580 }
581 }
582
583
584 /* ARGSUSED */
585 static int
586 pre_PP(DECL_ARGS)
587 {
588
589 switch (n->type) {
590 case (MAN_BLOCK):
591 mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
592 print_bvspace(p, n, mt->pardist);
593 break;
594 default:
595 p->offset = mt->offset;
596 break;
597 }
598
599 return(MAN_HEAD != n->type);
600 }
601
602
603 /* ARGSUSED */
604 static int
605 pre_IP(DECL_ARGS)
606 {
607 const struct man_node *nn;
608 size_t len;
609 int savelit, ival;
610
611 switch (n->type) {
612 case (MAN_BODY):
613 p->flags |= TERMP_NOSPACE;
614 break;
615 case (MAN_HEAD):
616 p->flags |= TERMP_NOBREAK;
617 p->trailspace = 1;
618 break;
619 case (MAN_BLOCK):
620 print_bvspace(p, n, mt->pardist);
621 /* FALLTHROUGH */
622 default:
623 return(1);
624 }
625
626 len = mt->lmargin[mt->lmargincur];
627 ival = -1;
628
629 /* Calculate the offset from the optional second argument. */
630 if (NULL != (nn = n->parent->head->child))
631 if (NULL != (nn = nn->next))
632 if ((ival = a2width(p, nn->string)) >= 0)
633 len = (size_t)ival;
634
635 switch (n->type) {
636 case (MAN_HEAD):
637 /* Handle zero-width lengths. */
638 if (0 == len)
639 len = term_len(p, 1);
640
641 p->offset = mt->offset;
642 p->rmargin = mt->offset + len;
643 if (ival < 0)
644 break;
645
646 /* Set the saved left-margin. */
647 mt->lmargin[mt->lmargincur] = (size_t)ival;
648
649 savelit = MANT_LITERAL & mt->fl;
650 mt->fl &= ~MANT_LITERAL;
651
652 if (n->child)
653 print_man_node(p, mt, n->child, meta);
654
655 if (savelit)
656 mt->fl |= MANT_LITERAL;
657
658 return(0);
659 case (MAN_BODY):
660 p->offset = mt->offset + len;
661 p->rmargin = p->maxrmargin;
662 break;
663 default:
664 break;
665 }
666
667 return(1);
668 }
669
670
671 /* ARGSUSED */
672 static void
673 post_IP(DECL_ARGS)
674 {
675
676 switch (n->type) {
677 case (MAN_HEAD):
678 term_flushln(p);
679 p->flags &= ~TERMP_NOBREAK;
680 p->trailspace = 0;
681 p->rmargin = p->maxrmargin;
682 break;
683 case (MAN_BODY):
684 term_newln(p);
685 p->offset = mt->offset;
686 break;
687 default:
688 break;
689 }
690 }
691
692
693 /* ARGSUSED */
694 static int
695 pre_TP(DECL_ARGS)
696 {
697 const struct man_node *nn;
698 size_t len;
699 int savelit, ival;
700
701 switch (n->type) {
702 case (MAN_HEAD):
703 p->flags |= TERMP_NOBREAK;
704 p->trailspace = 1;
705 break;
706 case (MAN_BODY):
707 p->flags |= TERMP_NOSPACE;
708 break;
709 case (MAN_BLOCK):
710 print_bvspace(p, n, mt->pardist);
711 /* FALLTHROUGH */
712 default:
713 return(1);
714 }
715
716 len = (size_t)mt->lmargin[mt->lmargincur];
717 ival = -1;
718
719 /* Calculate offset. */
720
721 if (NULL != (nn = n->parent->head->child))
722 if (nn->string && nn->parent->line == nn->line)
723 if ((ival = a2width(p, nn->string)) >= 0)
724 len = (size_t)ival;
725
726 switch (n->type) {
727 case (MAN_HEAD):
728 /* Handle zero-length properly. */
729 if (0 == len)
730 len = term_len(p, 1);
731
732 p->offset = mt->offset;
733 p->rmargin = mt->offset + len;
734
735 savelit = MANT_LITERAL & mt->fl;
736 mt->fl &= ~MANT_LITERAL;
737
738 /* Don't print same-line elements. */
739 for (nn = n->child; nn; nn = nn->next)
740 if (nn->line > n->line)
741 print_man_node(p, mt, nn, meta);
742
743 if (savelit)
744 mt->fl |= MANT_LITERAL;
745 if (ival >= 0)
746 mt->lmargin[mt->lmargincur] = (size_t)ival;
747
748 return(0);
749 case (MAN_BODY):
750 p->offset = mt->offset + len;
751 p->rmargin = p->maxrmargin;
752 p->trailspace = 0;
753 p->flags &= ~TERMP_NOBREAK;
754 break;
755 default:
756 break;
757 }
758
759 return(1);
760 }
761
762
763 /* ARGSUSED */
764 static void
765 post_TP(DECL_ARGS)
766 {
767
768 switch (n->type) {
769 case (MAN_HEAD):
770 term_flushln(p);
771 break;
772 case (MAN_BODY):
773 term_newln(p);
774 p->offset = mt->offset;
775 break;
776 default:
777 break;
778 }
779 }
780
781
782 /* ARGSUSED */
783 static int
784 pre_SS(DECL_ARGS)
785 {
786 int i;
787
788 switch (n->type) {
789 case (MAN_BLOCK):
790 mt->fl &= ~MANT_LITERAL;
791 mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
792 mt->offset = term_len(p, p->defindent);
793 /* If following a prior empty `SS', no vspace. */
794 if (n->prev && MAN_SS == n->prev->tok)
795 if (NULL == n->prev->body->child)
796 break;
797 if (NULL == n->prev)
798 break;
799 for (i = 0; i < mt->pardist; i++)
800 term_vspace(p);
801 break;
802 case (MAN_HEAD):
803 term_fontrepl(p, TERMFONT_BOLD);
804 p->offset = term_len(p, 3);
805 break;
806 case (MAN_BODY):
807 p->offset = mt->offset;
808 break;
809 default:
810 break;
811 }
812
813 return(1);
814 }
815
816
817 /* ARGSUSED */
818 static void
819 post_SS(DECL_ARGS)
820 {
821
822 switch (n->type) {
823 case (MAN_HEAD):
824 term_newln(p);
825 break;
826 case (MAN_BODY):
827 term_newln(p);
828 break;
829 default:
830 break;
831 }
832 }
833
834
835 /* ARGSUSED */
836 static int
837 pre_SH(DECL_ARGS)
838 {
839 int i;
840
841 switch (n->type) {
842 case (MAN_BLOCK):
843 mt->fl &= ~MANT_LITERAL;
844 mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
845 mt->offset = term_len(p, p->defindent);
846 /* If following a prior empty `SH', no vspace. */
847 if (n->prev && MAN_SH == n->prev->tok)
848 if (NULL == n->prev->body->child)
849 break;
850 /* If the first macro, no vspae. */
851 if (NULL == n->prev)
852 break;
853 for (i = 0; i < mt->pardist; i++)
854 term_vspace(p);
855 break;
856 case (MAN_HEAD):
857 term_fontrepl(p, TERMFONT_BOLD);
858 p->offset = 0;
859 break;
860 case (MAN_BODY):
861 p->offset = mt->offset;
862 break;
863 default:
864 break;
865 }
866
867 return(1);
868 }
869
870
871 /* ARGSUSED */
872 static void
873 post_SH(DECL_ARGS)
874 {
875
876 switch (n->type) {
877 case (MAN_HEAD):
878 term_newln(p);
879 break;
880 case (MAN_BODY):
881 term_newln(p);
882 break;
883 default:
884 break;
885 }
886 }
887
888 /* ARGSUSED */
889 static int
890 pre_RS(DECL_ARGS)
891 {
892 int ival;
893 size_t sz;
894
895 switch (n->type) {
896 case (MAN_BLOCK):
897 term_newln(p);
898 return(1);
899 case (MAN_HEAD):
900 return(0);
901 default:
902 break;
903 }
904
905 sz = term_len(p, p->defindent);
906
907 if (NULL != (n = n->parent->head->child))
908 if ((ival = a2width(p, n->string)) >= 0)
909 sz = (size_t)ival;
910
911 mt->offset += sz;
912 p->rmargin = p->maxrmargin;
913 p->offset = mt->offset < p->rmargin ? mt->offset : p->rmargin;
914
915 if (++mt->lmarginsz < MAXMARGINS)
916 mt->lmargincur = mt->lmarginsz;
917
918 mt->lmargin[mt->lmargincur] = mt->lmargin[mt->lmargincur - 1];
919 return(1);
920 }
921
922 /* ARGSUSED */
923 static void
924 post_RS(DECL_ARGS)
925 {
926 int ival;
927 size_t sz;
928
929 switch (n->type) {
930 case (MAN_BLOCK):
931 return;
932 case (MAN_HEAD):
933 return;
934 default:
935 term_newln(p);
936 break;
937 }
938
939 sz = term_len(p, p->defindent);
940
941 if (NULL != (n = n->parent->head->child))
942 if ((ival = a2width(p, n->string)) >= 0)
943 sz = (size_t)ival;
944
945 mt->offset = mt->offset < sz ? 0 : mt->offset - sz;
946 p->offset = mt->offset;
947
948 if (--mt->lmarginsz < MAXMARGINS)
949 mt->lmargincur = mt->lmarginsz;
950 }
951
952 /* ARGSUSED */
953 static int
954 pre_UR(DECL_ARGS)
955 {
956
957 return (MAN_HEAD != n->type);
958 }
959
960 /* ARGSUSED */
961 static void
962 post_UR(DECL_ARGS)
963 {
964
965 if (MAN_BLOCK != n->type)
966 return;
967
968 term_word(p, "<");
969 p->flags |= TERMP_NOSPACE;
970
971 if (NULL != n->child->child)
972 print_man_node(p, mt, n->child->child, meta);
973
974 p->flags |= TERMP_NOSPACE;
975 term_word(p, ">");
976 }
977
978 static void
979 print_man_node(DECL_ARGS)
980 {
981 size_t rm, rmax;
982 int c;
983
984 switch (n->type) {
985 case(MAN_TEXT):
986 /*
987 * If we have a blank line, output a vertical space.
988 * If we have a space as the first character, break
989 * before printing the line's data.
990 */
991 if ('\0' == *n->string) {
992 term_vspace(p);
993 return;
994 } else if (' ' == *n->string && MAN_LINE & n->flags)
995 term_newln(p);
996
997 term_word(p, n->string);
998 goto out;
999
1000 case (MAN_EQN):
1001 term_eqn(p, n->eqn);
1002 return;
1003 case (MAN_TBL):
1004 /*
1005 * Tables are preceded by a newline. Then process a
1006 * table line, which will cause line termination,
1007 */
1008 if (TBL_SPAN_FIRST & n->span->flags)
1009 term_newln(p);
1010 term_tbl(p, n->span);
1011 return;
1012 default:
1013 break;
1014 }
1015
1016 if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
1017 term_fontrepl(p, TERMFONT_NONE);
1018
1019 c = 1;
1020 if (termacts[n->tok].pre)
1021 c = (*termacts[n->tok].pre)(p, mt, n, meta);
1022
1023 if (c && n->child)
1024 print_man_nodelist(p, mt, n->child, meta);
1025
1026 if (termacts[n->tok].post)
1027 (*termacts[n->tok].post)(p, mt, n, meta);
1028 if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
1029 term_fontrepl(p, TERMFONT_NONE);
1030
1031 out:
1032 /*
1033 * If we're in a literal context, make sure that words
1034 * together on the same line stay together. This is a
1035 * POST-printing call, so we check the NEXT word. Since
1036 * -man doesn't have nested macros, we don't need to be
1037 * more specific than this.
1038 */
1039 if (MANT_LITERAL & mt->fl && ! (TERMP_NOBREAK & p->flags) &&
1040 (NULL == n->next || n->next->line > n->line)) {
1041 rm = p->rmargin;
1042 rmax = p->maxrmargin;
1043 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1044 p->flags |= TERMP_NOSPACE;
1045 if (NULL != n->string && '\0' != *n->string)
1046 term_flushln(p);
1047 else
1048 term_newln(p);
1049 if (rm < rmax && n->parent->tok == MAN_HP) {
1050 p->offset = rm;
1051 p->rmargin = rmax;
1052 } else
1053 p->rmargin = rm;
1054 p->maxrmargin = rmax;
1055 }
1056 if (MAN_EOS & n->flags)
1057 p->flags |= TERMP_SENTENCE;
1058 }
1059
1060
1061 static void
1062 print_man_nodelist(DECL_ARGS)
1063 {
1064
1065 print_man_node(p, mt, n, meta);
1066 if ( ! n->next)
1067 return;
1068 print_man_nodelist(p, mt, n->next, meta);
1069 }
1070
1071
1072 static void
1073 print_man_foot(struct termp *p, const void *arg)
1074 {
1075 char title[BUFSIZ];
1076 size_t datelen;
1077 const struct man_meta *meta;
1078
1079 meta = (const struct man_meta *)arg;
1080 assert(meta->title);
1081 assert(meta->msec);
1082 assert(meta->date);
1083
1084 term_fontrepl(p, TERMFONT_NONE);
1085
1086 term_vspace(p);
1087
1088 /*
1089 * Temporary, undocumented option to imitate mdoc(7) output.
1090 * In the bottom right corner, use the source instead of
1091 * the title.
1092 */
1093
1094 if ( ! p->mdocstyle) {
1095 term_vspace(p);
1096 term_vspace(p);
1097 snprintf(title, BUFSIZ, "%s(%s)", meta->title, meta->msec);
1098 } else if (meta->source) {
1099 strlcpy(title, meta->source, BUFSIZ);
1100 } else {
1101 title[0] = '\0';
1102 }
1103 datelen = term_strlen(p, meta->date);
1104
1105 /* Bottom left corner: manual source. */
1106
1107 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
1108 p->trailspace = 1;
1109 p->offset = 0;
1110 p->rmargin = (p->maxrmargin - datelen + term_len(p, 1)) / 2;
1111
1112 if (meta->source)
1113 term_word(p, meta->source);
1114 term_flushln(p);
1115
1116 /* At the bottom in the middle: manual date. */
1117
1118 p->flags |= TERMP_NOSPACE;
1119 p->offset = p->rmargin;
1120 p->rmargin = p->maxrmargin - term_strlen(p, title);
1121 if (p->offset + datelen >= p->rmargin)
1122 p->rmargin = p->offset + datelen;
1123
1124 term_word(p, meta->date);
1125 term_flushln(p);
1126
1127 /* Bottom right corner: manual title and section. */
1128
1129 p->flags &= ~TERMP_NOBREAK;
1130 p->flags |= TERMP_NOSPACE;
1131 p->trailspace = 0;
1132 p->offset = p->rmargin;
1133 p->rmargin = p->maxrmargin;
1134
1135 term_word(p, title);
1136 term_flushln(p);
1137 }
1138
1139
1140 static void
1141 print_man_head(struct termp *p, const void *arg)
1142 {
1143 char buf[BUFSIZ], title[BUFSIZ];
1144 size_t buflen, titlen;
1145 const struct man_meta *meta;
1146
1147 meta = (const struct man_meta *)arg;
1148 assert(meta->title);
1149 assert(meta->msec);
1150
1151 if (meta->vol)
1152 strlcpy(buf, meta->vol, BUFSIZ);
1153 else
1154 buf[0] = '\0';
1155 buflen = term_strlen(p, buf);
1156
1157 /* Top left corner: manual title and section. */
1158
1159 snprintf(title, BUFSIZ, "%s(%s)", meta->title, meta->msec);
1160 titlen = term_strlen(p, title);
1161
1162 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
1163 p->trailspace = 1;
1164 p->offset = 0;
1165 p->rmargin = 2 * (titlen+1) + buflen < p->maxrmargin ?
1166 (p->maxrmargin -
1167 term_strlen(p, buf) + term_len(p, 1)) / 2 :
1168 p->maxrmargin - buflen;
1169
1170 term_word(p, title);
1171 term_flushln(p);
1172
1173 /* At the top in the middle: manual volume. */
1174
1175 p->flags |= TERMP_NOSPACE;
1176 p->offset = p->rmargin;
1177 p->rmargin = p->offset + buflen + titlen < p->maxrmargin ?
1178 p->maxrmargin - titlen : p->maxrmargin;
1179
1180 term_word(p, buf);
1181 term_flushln(p);
1182
1183 /* Top right corner: title and section, again. */
1184
1185 p->flags &= ~TERMP_NOBREAK;
1186 p->trailspace = 0;
1187 if (p->rmargin + titlen <= p->maxrmargin) {
1188 p->flags |= TERMP_NOSPACE;
1189 p->offset = p->rmargin;
1190 p->rmargin = p->maxrmargin;
1191 term_word(p, title);
1192 term_flushln(p);
1193 }
1194
1195 p->flags &= ~TERMP_NOSPACE;
1196 p->offset = 0;
1197 p->rmargin = p->maxrmargin;
1198
1199 /*
1200 * Groff prints three blank lines before the content.
1201 * Do the same, except in the temporary, undocumented
1202 * mode imitating mdoc(7) output.
1203 */
1204
1205 term_vspace(p);
1206 if ( ! p->mdocstyle) {
1207 term_vspace(p);
1208 term_vspace(p);
1209 }
1210 }