1 /* $Id: man_term.c,v 1.127 2012/01/03 15:16:24 kristaps Exp $ */
2 /*
3 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010, 2011 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 /* FIXME: have PD set the default vspace width. */
39
40 struct mtermp {
41 int fl;
42 #define MANT_LITERAL (1 << 0)
43 size_t lmargin[MAXMARGINS]; /* margins (incl. visible page) */
44 int lmargincur; /* index of current margin */
45 int lmarginsz; /* actual number of nested margins */
46 size_t offset; /* default offset to visible page */
47 };
48
49 #define DECL_ARGS struct termp *p, \
50 struct mtermp *mt, \
51 const struct man_node *n, \
52 const struct man_meta *m
53
54 struct termact {
55 int (*pre)(DECL_ARGS);
56 void (*post)(DECL_ARGS);
57 int flags;
58 #define MAN_NOTEXT (1 << 0) /* Never has text children. */
59 };
60
61 static int a2width(const struct termp *, const char *);
62 static size_t a2height(const struct termp *, const char *);
63
64 static void print_man_nodelist(DECL_ARGS);
65 static void print_man_node(DECL_ARGS);
66 static void print_man_head(struct termp *, const void *);
67 static void print_man_foot(struct termp *, const void *);
68 static void print_bvspace(struct termp *,
69 const struct man_node *);
70
71 static int pre_B(DECL_ARGS);
72 static int pre_HP(DECL_ARGS);
73 static int pre_I(DECL_ARGS);
74 static int pre_IP(DECL_ARGS);
75 static int pre_OP(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_alternate(DECL_ARGS);
82 static int pre_ft(DECL_ARGS);
83 static int pre_ign(DECL_ARGS);
84 static int pre_in(DECL_ARGS);
85 static int pre_literal(DECL_ARGS);
86 static int pre_sp(DECL_ARGS);
87
88 static void post_IP(DECL_ARGS);
89 static void post_HP(DECL_ARGS);
90 static void post_RS(DECL_ARGS);
91 static void post_SH(DECL_ARGS);
92 static void post_SS(DECL_ARGS);
93 static void post_TP(DECL_ARGS);
94
95 static const struct termact termacts[MAN_MAX] = {
96 { pre_sp, NULL, MAN_NOTEXT }, /* br */
97 { NULL, NULL, 0 }, /* TH */
98 { pre_SH, post_SH, 0 }, /* SH */
99 { pre_SS, post_SS, 0 }, /* SS */
100 { pre_TP, post_TP, 0 }, /* TP */
101 { pre_PP, NULL, 0 }, /* LP */
102 { pre_PP, NULL, 0 }, /* PP */
103 { pre_PP, NULL, 0 }, /* P */
104 { pre_IP, post_IP, 0 }, /* IP */
105 { pre_HP, post_HP, 0 }, /* HP */
106 { NULL, NULL, 0 }, /* SM */
107 { pre_B, NULL, 0 }, /* SB */
108 { pre_alternate, NULL, 0 }, /* BI */
109 { pre_alternate, NULL, 0 }, /* IB */
110 { pre_alternate, NULL, 0 }, /* BR */
111 { pre_alternate, NULL, 0 }, /* RB */
112 { NULL, NULL, 0 }, /* R */
113 { pre_B, NULL, 0 }, /* B */
114 { pre_I, NULL, 0 }, /* I */
115 { pre_alternate, NULL, 0 }, /* IR */
116 { pre_alternate, NULL, 0 }, /* RI */
117 { pre_ign, NULL, MAN_NOTEXT }, /* na */
118 { pre_sp, NULL, MAN_NOTEXT }, /* sp */
119 { pre_literal, NULL, 0 }, /* nf */
120 { pre_literal, NULL, 0 }, /* fi */
121 { NULL, NULL, 0 }, /* RE */
122 { pre_RS, post_RS, 0 }, /* RS */
123 { pre_ign, NULL, 0 }, /* DT */
124 { pre_ign, NULL, 0 }, /* UC */
125 { pre_ign, NULL, 0 }, /* PD */
126 { pre_ign, NULL, 0 }, /* AT */
127 { pre_in, NULL, MAN_NOTEXT }, /* in */
128 { pre_ft, NULL, MAN_NOTEXT }, /* ft */
129 { pre_OP, NULL, 0 }, /* OP */
130 };
131
132
133
134 void
135 terminal_man(void *arg, const struct man *man)
136 {
137 struct termp *p;
138 const struct man_node *n;
139 const struct man_meta *m;
140 struct mtermp mt;
141
142 p = (struct termp *)arg;
143
144 if (0 == p->defindent)
145 p->defindent = 7;
146
147 p->overstep = 0;
148 p->maxrmargin = p->defrmargin;
149 p->tabwidth = term_len(p, 5);
150
151 if (NULL == p->symtab)
152 p->symtab = mchars_alloc();
153
154 n = man_node(man);
155 m = man_meta(man);
156
157 term_begin(p, print_man_head, print_man_foot, m);
158 p->flags |= TERMP_NOSPACE;
159
160 memset(&mt, 0, sizeof(struct mtermp));
161
162 mt.lmargin[mt.lmargincur] = term_len(p, p->defindent);
163 mt.offset = term_len(p, p->defindent);
164
165 if (n->child)
166 print_man_nodelist(p, &mt, n->child, m);
167
168 term_end(p);
169 }
170
171
172 static size_t
173 a2height(const struct termp *p, const char *cp)
174 {
175 struct roffsu su;
176
177 if ( ! a2roffsu(cp, &su, SCALE_VS))
178 SCALE_VS_INIT(&su, atoi(cp));
179
180 return(term_vspan(p, &su));
181 }
182
183
184 static int
185 a2width(const struct termp *p, const char *cp)
186 {
187 struct roffsu su;
188
189 if ( ! a2roffsu(cp, &su, SCALE_BU))
190 return(-1);
191
192 return((int)term_hspan(p, &su));
193 }
194
195 /*
196 * Printing leading vertical space before a block.
197 * This is used for the paragraph macros.
198 * The rules are pretty simple, since there's very little nesting going
199 * on here. Basically, if we're the first within another block (SS/SH),
200 * then don't emit vertical space. If we are (RS), then do. If not the
201 * first, print it.
202 */
203 static void
204 print_bvspace(struct termp *p, const struct man_node *n)
205 {
206
207 term_newln(p);
208
209 if (n->body && n->body->child)
210 if (MAN_TBL == n->body->child->type)
211 return;
212
213 if (MAN_ROOT == n->parent->type || MAN_RS != n->parent->tok)
214 if (NULL == n->prev)
215 return;
216
217 term_vspace(p);
218 }
219
220 /* ARGSUSED */
221 static int
222 pre_ign(DECL_ARGS)
223 {
224
225 return(0);
226 }
227
228
229 /* ARGSUSED */
230 static int
231 pre_I(DECL_ARGS)
232 {
233
234 term_fontrepl(p, TERMFONT_UNDER);
235 return(1);
236 }
237
238
239 /* ARGSUSED */
240 static int
241 pre_literal(DECL_ARGS)
242 {
243
244 term_newln(p);
245
246 if (MAN_nf == n->tok)
247 mt->fl |= MANT_LITERAL;
248 else
249 mt->fl &= ~MANT_LITERAL;
250
251 /*
252 * Unlike .IP and .TP, .HP does not have a HEAD.
253 * So in case a second call to term_flushln() is needed,
254 * indentation has to be set up explicitly.
255 */
256 if (MAN_HP == n->parent->tok && p->rmargin < p->maxrmargin) {
257 p->offset = p->rmargin;
258 p->rmargin = p->maxrmargin;
259 p->flags &= ~(TERMP_NOBREAK | TERMP_TWOSPACE);
260 p->flags |= TERMP_NOSPACE;
261 }
262
263 return(0);
264 }
265
266 /* ARGSUSED */
267 static int
268 pre_alternate(DECL_ARGS)
269 {
270 enum termfont font[2];
271 const struct man_node *nn;
272 int savelit, i;
273
274 switch (n->tok) {
275 case (MAN_RB):
276 font[0] = TERMFONT_NONE;
277 font[1] = TERMFONT_BOLD;
278 break;
279 case (MAN_RI):
280 font[0] = TERMFONT_NONE;
281 font[1] = TERMFONT_UNDER;
282 break;
283 case (MAN_BR):
284 font[0] = TERMFONT_BOLD;
285 font[1] = TERMFONT_NONE;
286 break;
287 case (MAN_BI):
288 font[0] = TERMFONT_BOLD;
289 font[1] = TERMFONT_UNDER;
290 break;
291 case (MAN_IR):
292 font[0] = TERMFONT_UNDER;
293 font[1] = TERMFONT_NONE;
294 break;
295 case (MAN_IB):
296 font[0] = TERMFONT_UNDER;
297 font[1] = TERMFONT_BOLD;
298 break;
299 default:
300 abort();
301 }
302
303 savelit = MANT_LITERAL & mt->fl;
304 mt->fl &= ~MANT_LITERAL;
305
306 for (i = 0, nn = n->child; nn; nn = nn->next, i = 1 - i) {
307 term_fontrepl(p, font[i]);
308 if (savelit && NULL == nn->next)
309 mt->fl |= MANT_LITERAL;
310 print_man_node(p, mt, nn, m);
311 if (nn->next)
312 p->flags |= TERMP_NOSPACE;
313 }
314
315 return(0);
316 }
317
318 /* ARGSUSED */
319 static int
320 pre_B(DECL_ARGS)
321 {
322
323 term_fontrepl(p, TERMFONT_BOLD);
324 return(1);
325 }
326
327 /* ARGSUSED */
328 static int
329 pre_OP(DECL_ARGS)
330 {
331
332 term_word(p, "[");
333 p->flags |= TERMP_NOSPACE;
334
335 if (NULL != (n = n->child)) {
336 term_fontrepl(p, TERMFONT_BOLD);
337 term_word(p, n->string);
338 }
339 if (NULL != n && NULL != n->next) {
340 term_fontrepl(p, TERMFONT_UNDER);
341 term_word(p, n->next->string);
342 }
343
344 term_fontrepl(p, TERMFONT_NONE);
345 p->flags |= TERMP_NOSPACE;
346 term_word(p, "]");
347 return(0);
348 }
349
350 /* ARGSUSED */
351 static int
352 pre_ft(DECL_ARGS)
353 {
354 const char *cp;
355
356 if (NULL == n->child) {
357 term_fontlast(p);
358 return(0);
359 }
360
361 cp = n->child->string;
362 switch (*cp) {
363 case ('4'):
364 /* FALLTHROUGH */
365 case ('3'):
366 /* FALLTHROUGH */
367 case ('B'):
368 term_fontrepl(p, TERMFONT_BOLD);
369 break;
370 case ('2'):
371 /* FALLTHROUGH */
372 case ('I'):
373 term_fontrepl(p, TERMFONT_UNDER);
374 break;
375 case ('P'):
376 term_fontlast(p);
377 break;
378 case ('1'):
379 /* FALLTHROUGH */
380 case ('C'):
381 /* FALLTHROUGH */
382 case ('R'):
383 term_fontrepl(p, TERMFONT_NONE);
384 break;
385 default:
386 break;
387 }
388 return(0);
389 }
390
391 /* ARGSUSED */
392 static int
393 pre_in(DECL_ARGS)
394 {
395 int len, less;
396 size_t v;
397 const char *cp;
398
399 term_newln(p);
400
401 if (NULL == n->child) {
402 p->offset = mt->offset;
403 return(0);
404 }
405
406 cp = n->child->string;
407 less = 0;
408
409 if ('-' == *cp)
410 less = -1;
411 else if ('+' == *cp)
412 less = 1;
413 else
414 cp--;
415
416 if ((len = a2width(p, ++cp)) < 0)
417 return(0);
418
419 v = (size_t)len;
420
421 if (less < 0)
422 p->offset -= p->offset > v ? v : p->offset;
423 else if (less > 0)
424 p->offset += v;
425 else
426 p->offset = v;
427
428 /* Don't let this creep beyond the right margin. */
429
430 if (p->offset > p->rmargin)
431 p->offset = p->rmargin;
432
433 return(0);
434 }
435
436
437 /* ARGSUSED */
438 static int
439 pre_sp(DECL_ARGS)
440 {
441 size_t i, len;
442
443 if ((NULL == n->prev && n->parent)) {
444 if (MAN_SS == n->parent->tok)
445 return(0);
446 if (MAN_SH == n->parent->tok)
447 return(0);
448 }
449
450 switch (n->tok) {
451 case (MAN_br):
452 len = 0;
453 break;
454 default:
455 len = n->child ? a2height(p, n->child->string) : 1;
456 break;
457 }
458
459 if (0 == len)
460 term_newln(p);
461 for (i = 0; i < len; i++)
462 term_vspace(p);
463
464 return(0);
465 }
466
467
468 /* ARGSUSED */
469 static int
470 pre_HP(DECL_ARGS)
471 {
472 size_t len, one;
473 int ival;
474 const struct man_node *nn;
475
476 switch (n->type) {
477 case (MAN_BLOCK):
478 print_bvspace(p, n);
479 return(1);
480 case (MAN_BODY):
481 p->flags |= TERMP_NOBREAK;
482 p->flags |= TERMP_TWOSPACE;
483 break;
484 default:
485 return(0);
486 }
487
488 len = mt->lmargin[mt->lmargincur];
489 ival = -1;
490
491 /* Calculate offset. */
492
493 if (NULL != (nn = n->parent->head->child))
494 if ((ival = a2width(p, nn->string)) >= 0)
495 len = (size_t)ival;
496
497 one = term_len(p, 1);
498 if (len < one)
499 len = one;
500
501 p->offset = mt->offset;
502 p->rmargin = mt->offset + len;
503
504 if (ival >= 0)
505 mt->lmargin[mt->lmargincur] = (size_t)ival;
506
507 return(1);
508 }
509
510
511 /* ARGSUSED */
512 static void
513 post_HP(DECL_ARGS)
514 {
515
516 switch (n->type) {
517 case (MAN_BLOCK):
518 term_flushln(p);
519 break;
520 case (MAN_BODY):
521 term_flushln(p);
522 p->flags &= ~TERMP_NOBREAK;
523 p->flags &= ~TERMP_TWOSPACE;
524 p->offset = mt->offset;
525 p->rmargin = p->maxrmargin;
526 break;
527 default:
528 break;
529 }
530 }
531
532
533 /* ARGSUSED */
534 static int
535 pre_PP(DECL_ARGS)
536 {
537
538 switch (n->type) {
539 case (MAN_BLOCK):
540 mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
541 print_bvspace(p, n);
542 break;
543 default:
544 p->offset = mt->offset;
545 break;
546 }
547
548 return(MAN_HEAD != n->type);
549 }
550
551
552 /* ARGSUSED */
553 static int
554 pre_IP(DECL_ARGS)
555 {
556 const struct man_node *nn;
557 size_t len;
558 int savelit, ival;
559
560 switch (n->type) {
561 case (MAN_BODY):
562 p->flags |= TERMP_NOSPACE;
563 break;
564 case (MAN_HEAD):
565 p->flags |= TERMP_NOBREAK;
566 break;
567 case (MAN_BLOCK):
568 print_bvspace(p, n);
569 /* FALLTHROUGH */
570 default:
571 return(1);
572 }
573
574 len = mt->lmargin[mt->lmargincur];
575 ival = -1;
576
577 /* Calculate the offset from the optional second argument. */
578 if (NULL != (nn = n->parent->head->child))
579 if (NULL != (nn = nn->next))
580 if ((ival = a2width(p, nn->string)) >= 0)
581 len = (size_t)ival;
582
583 switch (n->type) {
584 case (MAN_HEAD):
585 /* Handle zero-width lengths. */
586 if (0 == len)
587 len = term_len(p, 1);
588
589 p->offset = mt->offset;
590 p->rmargin = mt->offset + len;
591 if (ival < 0)
592 break;
593
594 /* Set the saved left-margin. */
595 mt->lmargin[mt->lmargincur] = (size_t)ival;
596
597 savelit = MANT_LITERAL & mt->fl;
598 mt->fl &= ~MANT_LITERAL;
599
600 if (n->child)
601 print_man_node(p, mt, n->child, m);
602
603 if (savelit)
604 mt->fl |= MANT_LITERAL;
605
606 return(0);
607 case (MAN_BODY):
608 p->offset = mt->offset + len;
609 p->rmargin = p->maxrmargin;
610 break;
611 default:
612 break;
613 }
614
615 return(1);
616 }
617
618
619 /* ARGSUSED */
620 static void
621 post_IP(DECL_ARGS)
622 {
623
624 switch (n->type) {
625 case (MAN_HEAD):
626 term_flushln(p);
627 p->flags &= ~TERMP_NOBREAK;
628 p->rmargin = p->maxrmargin;
629 break;
630 case (MAN_BODY):
631 term_newln(p);
632 break;
633 default:
634 break;
635 }
636 }
637
638
639 /* ARGSUSED */
640 static int
641 pre_TP(DECL_ARGS)
642 {
643 const struct man_node *nn;
644 size_t len;
645 int savelit, ival;
646
647 switch (n->type) {
648 case (MAN_HEAD):
649 p->flags |= TERMP_NOBREAK;
650 break;
651 case (MAN_BODY):
652 p->flags |= TERMP_NOSPACE;
653 break;
654 case (MAN_BLOCK):
655 print_bvspace(p, n);
656 /* FALLTHROUGH */
657 default:
658 return(1);
659 }
660
661 len = (size_t)mt->lmargin[mt->lmargincur];
662 ival = -1;
663
664 /* Calculate offset. */
665
666 if (NULL != (nn = n->parent->head->child))
667 if (nn->string && nn->parent->line == nn->line)
668 if ((ival = a2width(p, nn->string)) >= 0)
669 len = (size_t)ival;
670
671 switch (n->type) {
672 case (MAN_HEAD):
673 /* Handle zero-length properly. */
674 if (0 == len)
675 len = term_len(p, 1);
676
677 p->offset = mt->offset;
678 p->rmargin = mt->offset + len;
679
680 savelit = MANT_LITERAL & mt->fl;
681 mt->fl &= ~MANT_LITERAL;
682
683 /* Don't print same-line elements. */
684 for (nn = n->child; nn; nn = nn->next)
685 if (nn->line > n->line)
686 print_man_node(p, mt, nn, m);
687
688 if (savelit)
689 mt->fl |= MANT_LITERAL;
690 if (ival >= 0)
691 mt->lmargin[mt->lmargincur] = (size_t)ival;
692
693 return(0);
694 case (MAN_BODY):
695 p->offset = mt->offset + len;
696 p->rmargin = p->maxrmargin;
697 break;
698 default:
699 break;
700 }
701
702 return(1);
703 }
704
705
706 /* ARGSUSED */
707 static void
708 post_TP(DECL_ARGS)
709 {
710
711 switch (n->type) {
712 case (MAN_HEAD):
713 term_flushln(p);
714 p->flags &= ~TERMP_NOBREAK;
715 p->flags &= ~TERMP_TWOSPACE;
716 p->rmargin = p->maxrmargin;
717 break;
718 case (MAN_BODY):
719 term_newln(p);
720 break;
721 default:
722 break;
723 }
724 }
725
726
727 /* ARGSUSED */
728 static int
729 pre_SS(DECL_ARGS)
730 {
731
732 switch (n->type) {
733 case (MAN_BLOCK):
734 mt->fl &= ~MANT_LITERAL;
735 mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
736 mt->offset = term_len(p, p->defindent);
737 /* If following a prior empty `SS', no vspace. */
738 if (n->prev && MAN_SS == n->prev->tok)
739 if (NULL == n->prev->body->child)
740 break;
741 if (NULL == n->prev)
742 break;
743 term_vspace(p);
744 break;
745 case (MAN_HEAD):
746 term_fontrepl(p, TERMFONT_BOLD);
747 p->offset = term_len(p, p->defindent/2);
748 break;
749 case (MAN_BODY):
750 p->offset = mt->offset;
751 break;
752 default:
753 break;
754 }
755
756 return(1);
757 }
758
759
760 /* ARGSUSED */
761 static void
762 post_SS(DECL_ARGS)
763 {
764
765 switch (n->type) {
766 case (MAN_HEAD):
767 term_newln(p);
768 break;
769 case (MAN_BODY):
770 term_newln(p);
771 break;
772 default:
773 break;
774 }
775 }
776
777
778 /* ARGSUSED */
779 static int
780 pre_SH(DECL_ARGS)
781 {
782
783 switch (n->type) {
784 case (MAN_BLOCK):
785 mt->fl &= ~MANT_LITERAL;
786 mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
787 mt->offset = term_len(p, p->defindent);
788 /* If following a prior empty `SH', no vspace. */
789 if (n->prev && MAN_SH == n->prev->tok)
790 if (NULL == n->prev->body->child)
791 break;
792 /* If the first macro, no vspae. */
793 if (NULL == n->prev)
794 break;
795 term_vspace(p);
796 break;
797 case (MAN_HEAD):
798 term_fontrepl(p, TERMFONT_BOLD);
799 p->offset = 0;
800 break;
801 case (MAN_BODY):
802 p->offset = mt->offset;
803 break;
804 default:
805 break;
806 }
807
808 return(1);
809 }
810
811
812 /* ARGSUSED */
813 static void
814 post_SH(DECL_ARGS)
815 {
816
817 switch (n->type) {
818 case (MAN_HEAD):
819 term_newln(p);
820 break;
821 case (MAN_BODY):
822 term_newln(p);
823 break;
824 default:
825 break;
826 }
827 }
828
829 /* ARGSUSED */
830 static int
831 pre_RS(DECL_ARGS)
832 {
833 int ival;
834 size_t sz;
835
836 switch (n->type) {
837 case (MAN_BLOCK):
838 term_newln(p);
839 return(1);
840 case (MAN_HEAD):
841 return(0);
842 default:
843 break;
844 }
845
846 sz = term_len(p, p->defindent);
847
848 if (NULL != (n = n->parent->head->child))
849 if ((ival = a2width(p, n->string)) >= 0)
850 sz = (size_t)ival;
851
852 mt->offset += sz;
853 p->rmargin = p->maxrmargin;
854 p->offset = mt->offset < p->rmargin ? mt->offset : p->rmargin;
855
856 if (++mt->lmarginsz < MAXMARGINS)
857 mt->lmargincur = mt->lmarginsz;
858
859 mt->lmargin[mt->lmargincur] = mt->lmargin[mt->lmargincur - 1];
860 return(1);
861 }
862
863 /* ARGSUSED */
864 static void
865 post_RS(DECL_ARGS)
866 {
867 int ival;
868 size_t sz;
869
870 switch (n->type) {
871 case (MAN_BLOCK):
872 return;
873 case (MAN_HEAD):
874 return;
875 default:
876 term_newln(p);
877 break;
878 }
879
880 sz = term_len(p, p->defindent);
881
882 if (NULL != (n = n->parent->head->child))
883 if ((ival = a2width(p, n->string)) >= 0)
884 sz = (size_t)ival;
885
886 mt->offset = mt->offset < sz ? 0 : mt->offset - sz;
887 p->offset = mt->offset;
888
889 if (--mt->lmarginsz < MAXMARGINS)
890 mt->lmargincur = mt->lmarginsz;
891 }
892
893 static void
894 print_man_node(DECL_ARGS)
895 {
896 size_t rm, rmax;
897 int c;
898
899 switch (n->type) {
900 case(MAN_TEXT):
901 /*
902 * If we have a blank line, output a vertical space.
903 * If we have a space as the first character, break
904 * before printing the line's data.
905 */
906 if ('\0' == *n->string) {
907 term_vspace(p);
908 return;
909 } else if (' ' == *n->string && MAN_LINE & n->flags)
910 term_newln(p);
911
912 term_word(p, n->string);
913
914 /*
915 * If we're in a literal context, make sure that words
916 * togehter on the same line stay together. This is a
917 * POST-printing call, so we check the NEXT word. Since
918 * -man doesn't have nested macros, we don't need to be
919 * more specific than this.
920 */
921 if (MANT_LITERAL & mt->fl && ! (TERMP_NOBREAK & p->flags) &&
922 (NULL == n->next ||
923 n->next->line > n->line)) {
924 rm = p->rmargin;
925 rmax = p->maxrmargin;
926 p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
927 p->flags |= TERMP_NOSPACE;
928 term_flushln(p);
929 p->rmargin = rm;
930 p->maxrmargin = rmax;
931 }
932
933 if (MAN_EOS & n->flags)
934 p->flags |= TERMP_SENTENCE;
935 return;
936 case (MAN_EQN):
937 term_eqn(p, n->eqn);
938 return;
939 case (MAN_TBL):
940 /*
941 * Tables are preceded by a newline. Then process a
942 * table line, which will cause line termination,
943 */
944 if (TBL_SPAN_FIRST & n->span->flags)
945 term_newln(p);
946 term_tbl(p, n->span);
947 return;
948 default:
949 break;
950 }
951
952 if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
953 term_fontrepl(p, TERMFONT_NONE);
954
955 c = 1;
956 if (termacts[n->tok].pre)
957 c = (*termacts[n->tok].pre)(p, mt, n, m);
958
959 if (c && n->child)
960 print_man_nodelist(p, mt, n->child, m);
961
962 if (termacts[n->tok].post)
963 (*termacts[n->tok].post)(p, mt, n, m);
964 if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
965 term_fontrepl(p, TERMFONT_NONE);
966
967 if (MAN_EOS & n->flags)
968 p->flags |= TERMP_SENTENCE;
969 }
970
971
972 static void
973 print_man_nodelist(DECL_ARGS)
974 {
975
976 print_man_node(p, mt, n, m);
977 if ( ! n->next)
978 return;
979 print_man_nodelist(p, mt, n->next, m);
980 }
981
982
983 static void
984 print_man_foot(struct termp *p, const void *arg)
985 {
986 char title[BUFSIZ];
987 size_t datelen;
988 const struct man_meta *meta;
989
990 meta = (const struct man_meta *)arg;
991 assert(meta->title);
992 assert(meta->msec);
993 assert(meta->date);
994
995 term_fontrepl(p, TERMFONT_NONE);
996
997 term_vspace(p);
998
999 /*
1000 * Temporary, undocumented option to imitate mdoc(7) output.
1001 * In the bottom right corner, use the source instead of
1002 * the title.
1003 */
1004
1005 if ( ! p->mdocstyle) {
1006 term_vspace(p);
1007 term_vspace(p);
1008 snprintf(title, BUFSIZ, "%s(%s)", meta->title, meta->msec);
1009 } else if (meta->source) {
1010 strlcpy(title, meta->source, BUFSIZ);
1011 } else {
1012 title[0] = '\0';
1013 }
1014 datelen = term_strlen(p, meta->date);
1015
1016 /* Bottom left corner: manual source. */
1017
1018 p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
1019 p->offset = 0;
1020 p->rmargin = (p->maxrmargin - datelen + term_len(p, 1)) / 2;
1021
1022 if (meta->source)
1023 term_word(p, meta->source);
1024 term_flushln(p);
1025
1026 /* At the bottom in the middle: manual date. */
1027
1028 p->flags |= TERMP_NOSPACE;
1029 p->offset = p->rmargin;
1030 p->rmargin = p->maxrmargin - term_strlen(p, title);
1031 if (p->offset + datelen >= p->rmargin)
1032 p->rmargin = p->offset + datelen;
1033
1034 term_word(p, meta->date);
1035 term_flushln(p);
1036
1037 /* Bottom right corner: manual title and section. */
1038
1039 p->flags &= ~TERMP_NOBREAK;
1040 p->flags |= TERMP_NOSPACE;
1041 p->offset = p->rmargin;
1042 p->rmargin = p->maxrmargin;
1043
1044 term_word(p, title);
1045 term_flushln(p);
1046 }
1047
1048
1049 static void
1050 print_man_head(struct termp *p, const void *arg)
1051 {
1052 char buf[BUFSIZ], title[BUFSIZ];
1053 size_t buflen, titlen;
1054 const struct man_meta *m;
1055
1056 m = (const struct man_meta *)arg;
1057 assert(m->title);
1058 assert(m->msec);
1059
1060 if (m->vol)
1061 strlcpy(buf, m->vol, BUFSIZ);
1062 else
1063 buf[0] = '\0';
1064 buflen = term_strlen(p, buf);
1065
1066 /* Top left corner: manual title and section. */
1067
1068 snprintf(title, BUFSIZ, "%s(%s)", m->title, m->msec);
1069 titlen = term_strlen(p, title);
1070
1071 p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
1072 p->offset = 0;
1073 p->rmargin = 2 * (titlen+1) + buflen < p->maxrmargin ?
1074 (p->maxrmargin -
1075 term_strlen(p, buf) + term_len(p, 1)) / 2 :
1076 p->maxrmargin - buflen;
1077
1078 term_word(p, title);
1079 term_flushln(p);
1080
1081 /* At the top in the middle: manual volume. */
1082
1083 p->flags |= TERMP_NOSPACE;
1084 p->offset = p->rmargin;
1085 p->rmargin = p->offset + buflen + titlen < p->maxrmargin ?
1086 p->maxrmargin - titlen : p->maxrmargin;
1087
1088 term_word(p, buf);
1089 term_flushln(p);
1090
1091 /* Top right corner: title and section, again. */
1092
1093 p->flags &= ~TERMP_NOBREAK;
1094 if (p->rmargin + titlen <= p->maxrmargin) {
1095 p->flags |= TERMP_NOSPACE;
1096 p->offset = p->rmargin;
1097 p->rmargin = p->maxrmargin;
1098 term_word(p, title);
1099 term_flushln(p);
1100 }
1101
1102 p->flags &= ~TERMP_NOSPACE;
1103 p->offset = 0;
1104 p->rmargin = p->maxrmargin;
1105
1106 /*
1107 * Groff prints three blank lines before the content.
1108 * Do the same, except in the temporary, undocumented
1109 * mode imitating mdoc(7) output.
1110 */
1111
1112 term_vspace(p);
1113 if ( ! p->mdocstyle) {
1114 term_vspace(p);
1115 term_vspace(p);
1116 }
1117 }