-
Notifications
You must be signed in to change notification settings - Fork 0
/
mdoc_term.c
2244 lines (1918 loc) · 45.6 KB
/
mdoc_term.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* $Id: mdoc_term.c,v 1.329 2015/10/12 00:08:16 schwarze Exp $ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010, 2012-2015 Ingo Schwarze <schwarze@openbsd.org>
* Copyright (c) 2013 Franco Fichtner <franco@lastsummer.de>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "config.h"
#include <sys/types.h>
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc_aux.h"
#include "mandoc.h"
#include "roff.h"
#include "mdoc.h"
#include "out.h"
#include "term.h"
#include "tag.h"
#include "main.h"
struct termpair {
struct termpair *ppair;
int count;
};
#define DECL_ARGS struct termp *p, \
struct termpair *pair, \
const struct roff_meta *meta, \
struct roff_node *n
struct termact {
int (*pre)(DECL_ARGS);
void (*post)(DECL_ARGS);
};
static int a2width(const struct termp *, const char *);
static void print_bvspace(struct termp *,
const struct roff_node *,
const struct roff_node *);
static void print_mdoc_node(DECL_ARGS);
static void print_mdoc_nodelist(DECL_ARGS);
static void print_mdoc_head(struct termp *, const struct roff_meta *);
static void print_mdoc_foot(struct termp *, const struct roff_meta *);
static void synopsis_pre(struct termp *,
const struct roff_node *);
static void termp____post(DECL_ARGS);
static void termp__t_post(DECL_ARGS);
static void termp_bd_post(DECL_ARGS);
static void termp_bk_post(DECL_ARGS);
static void termp_bl_post(DECL_ARGS);
static void termp_eo_post(DECL_ARGS);
static void termp_fd_post(DECL_ARGS);
static void termp_fo_post(DECL_ARGS);
static void termp_in_post(DECL_ARGS);
static void termp_it_post(DECL_ARGS);
static void termp_lb_post(DECL_ARGS);
static void termp_nm_post(DECL_ARGS);
static void termp_pf_post(DECL_ARGS);
static void termp_quote_post(DECL_ARGS);
static void termp_sh_post(DECL_ARGS);
static void termp_ss_post(DECL_ARGS);
static int termp__a_pre(DECL_ARGS);
static int termp__t_pre(DECL_ARGS);
static int termp_an_pre(DECL_ARGS);
static int termp_ap_pre(DECL_ARGS);
static int termp_bd_pre(DECL_ARGS);
static int termp_bf_pre(DECL_ARGS);
static int termp_bk_pre(DECL_ARGS);
static int termp_bl_pre(DECL_ARGS);
static int termp_bold_pre(DECL_ARGS);
static int termp_bt_pre(DECL_ARGS);
static int termp_bx_pre(DECL_ARGS);
static int termp_cd_pre(DECL_ARGS);
static int termp_d1_pre(DECL_ARGS);
static int termp_eo_pre(DECL_ARGS);
static int termp_er_pre(DECL_ARGS);
static int termp_ex_pre(DECL_ARGS);
static int termp_fa_pre(DECL_ARGS);
static int termp_fd_pre(DECL_ARGS);
static int termp_fl_pre(DECL_ARGS);
static int termp_fn_pre(DECL_ARGS);
static int termp_fo_pre(DECL_ARGS);
static int termp_ft_pre(DECL_ARGS);
static int termp_in_pre(DECL_ARGS);
static int termp_it_pre(DECL_ARGS);
static int termp_li_pre(DECL_ARGS);
static int termp_ll_pre(DECL_ARGS);
static int termp_lk_pre(DECL_ARGS);
static int termp_nd_pre(DECL_ARGS);
static int termp_nm_pre(DECL_ARGS);
static int termp_ns_pre(DECL_ARGS);
static int termp_quote_pre(DECL_ARGS);
static int termp_rs_pre(DECL_ARGS);
static int termp_rv_pre(DECL_ARGS);
static int termp_sh_pre(DECL_ARGS);
static int termp_skip_pre(DECL_ARGS);
static int termp_sm_pre(DECL_ARGS);
static int termp_sp_pre(DECL_ARGS);
static int termp_ss_pre(DECL_ARGS);
static int termp_tag_pre(DECL_ARGS);
static int termp_under_pre(DECL_ARGS);
static int termp_ud_pre(DECL_ARGS);
static int termp_vt_pre(DECL_ARGS);
static int termp_xr_pre(DECL_ARGS);
static int termp_xx_pre(DECL_ARGS);
static const struct termact termacts[MDOC_MAX] = {
{ termp_ap_pre, NULL }, /* Ap */
{ NULL, NULL }, /* Dd */
{ NULL, NULL }, /* Dt */
{ NULL, NULL }, /* Os */
{ termp_sh_pre, termp_sh_post }, /* Sh */
{ termp_ss_pre, termp_ss_post }, /* Ss */
{ termp_sp_pre, NULL }, /* Pp */
{ termp_d1_pre, termp_bl_post }, /* D1 */
{ termp_d1_pre, termp_bl_post }, /* Dl */
{ termp_bd_pre, termp_bd_post }, /* Bd */
{ NULL, NULL }, /* Ed */
{ termp_bl_pre, termp_bl_post }, /* Bl */
{ NULL, NULL }, /* El */
{ termp_it_pre, termp_it_post }, /* It */
{ termp_under_pre, NULL }, /* Ad */
{ termp_an_pre, NULL }, /* An */
{ termp_under_pre, NULL }, /* Ar */
{ termp_cd_pre, NULL }, /* Cd */
{ termp_bold_pre, NULL }, /* Cm */
{ termp_li_pre, NULL }, /* Dv */
{ termp_er_pre, NULL }, /* Er */
{ termp_tag_pre, NULL }, /* Ev */
{ termp_ex_pre, NULL }, /* Ex */
{ termp_fa_pre, NULL }, /* Fa */
{ termp_fd_pre, termp_fd_post }, /* Fd */
{ termp_fl_pre, NULL }, /* Fl */
{ termp_fn_pre, NULL }, /* Fn */
{ termp_ft_pre, NULL }, /* Ft */
{ termp_bold_pre, NULL }, /* Ic */
{ termp_in_pre, termp_in_post }, /* In */
{ termp_li_pre, NULL }, /* Li */
{ termp_nd_pre, NULL }, /* Nd */
{ termp_nm_pre, termp_nm_post }, /* Nm */
{ termp_quote_pre, termp_quote_post }, /* Op */
{ termp_ft_pre, NULL }, /* Ot */
{ termp_under_pre, NULL }, /* Pa */
{ termp_rv_pre, NULL }, /* Rv */
{ NULL, NULL }, /* St */
{ termp_under_pre, NULL }, /* Va */
{ termp_vt_pre, NULL }, /* Vt */
{ termp_xr_pre, NULL }, /* Xr */
{ termp__a_pre, termp____post }, /* %A */
{ termp_under_pre, termp____post }, /* %B */
{ NULL, termp____post }, /* %D */
{ termp_under_pre, termp____post }, /* %I */
{ termp_under_pre, termp____post }, /* %J */
{ NULL, termp____post }, /* %N */
{ NULL, termp____post }, /* %O */
{ NULL, termp____post }, /* %P */
{ NULL, termp____post }, /* %R */
{ termp__t_pre, termp__t_post }, /* %T */
{ NULL, termp____post }, /* %V */
{ NULL, NULL }, /* Ac */
{ termp_quote_pre, termp_quote_post }, /* Ao */
{ termp_quote_pre, termp_quote_post }, /* Aq */
{ NULL, NULL }, /* At */
{ NULL, NULL }, /* Bc */
{ termp_bf_pre, NULL }, /* Bf */
{ termp_quote_pre, termp_quote_post }, /* Bo */
{ termp_quote_pre, termp_quote_post }, /* Bq */
{ termp_xx_pre, NULL }, /* Bsx */
{ termp_bx_pre, NULL }, /* Bx */
{ termp_skip_pre, NULL }, /* Db */
{ NULL, NULL }, /* Dc */
{ termp_quote_pre, termp_quote_post }, /* Do */
{ termp_quote_pre, termp_quote_post }, /* Dq */
{ NULL, NULL }, /* Ec */ /* FIXME: no space */
{ NULL, NULL }, /* Ef */
{ termp_under_pre, NULL }, /* Em */
{ termp_eo_pre, termp_eo_post }, /* Eo */
{ termp_xx_pre, NULL }, /* Fx */
{ termp_bold_pre, NULL }, /* Ms */
{ termp_li_pre, NULL }, /* No */
{ termp_ns_pre, NULL }, /* Ns */
{ termp_xx_pre, NULL }, /* Nx */
{ termp_xx_pre, NULL }, /* Ox */
{ NULL, NULL }, /* Pc */
{ NULL, termp_pf_post }, /* Pf */
{ termp_quote_pre, termp_quote_post }, /* Po */
{ termp_quote_pre, termp_quote_post }, /* Pq */
{ NULL, NULL }, /* Qc */
{ termp_quote_pre, termp_quote_post }, /* Ql */
{ termp_quote_pre, termp_quote_post }, /* Qo */
{ termp_quote_pre, termp_quote_post }, /* Qq */
{ NULL, NULL }, /* Re */
{ termp_rs_pre, NULL }, /* Rs */
{ NULL, NULL }, /* Sc */
{ termp_quote_pre, termp_quote_post }, /* So */
{ termp_quote_pre, termp_quote_post }, /* Sq */
{ termp_sm_pre, NULL }, /* Sm */
{ termp_under_pre, NULL }, /* Sx */
{ termp_bold_pre, NULL }, /* Sy */
{ NULL, NULL }, /* Tn */
{ termp_xx_pre, NULL }, /* Ux */
{ NULL, NULL }, /* Xc */
{ NULL, NULL }, /* Xo */
{ termp_fo_pre, termp_fo_post }, /* Fo */
{ NULL, NULL }, /* Fc */
{ termp_quote_pre, termp_quote_post }, /* Oo */
{ NULL, NULL }, /* Oc */
{ termp_bk_pre, termp_bk_post }, /* Bk */
{ NULL, NULL }, /* Ek */
{ termp_bt_pre, NULL }, /* Bt */
{ NULL, NULL }, /* Hf */
{ termp_under_pre, NULL }, /* Fr */
{ termp_ud_pre, NULL }, /* Ud */
{ NULL, termp_lb_post }, /* Lb */
{ termp_sp_pre, NULL }, /* Lp */
{ termp_lk_pre, NULL }, /* Lk */
{ termp_under_pre, NULL }, /* Mt */
{ termp_quote_pre, termp_quote_post }, /* Brq */
{ termp_quote_pre, termp_quote_post }, /* Bro */
{ NULL, NULL }, /* Brc */
{ NULL, termp____post }, /* %C */
{ termp_skip_pre, NULL }, /* Es */
{ termp_quote_pre, termp_quote_post }, /* En */
{ termp_xx_pre, NULL }, /* Dx */
{ NULL, termp____post }, /* %Q */
{ termp_sp_pre, NULL }, /* br */
{ termp_sp_pre, NULL }, /* sp */
{ NULL, termp____post }, /* %U */
{ NULL, NULL }, /* Ta */
{ termp_ll_pre, NULL }, /* ll */
};
static int fn_prio;
void
terminal_mdoc(void *arg, const struct roff_man *mdoc)
{
struct roff_node *n;
struct termp *p;
p = (struct termp *)arg;
p->overstep = 0;
p->rmargin = p->maxrmargin = p->defrmargin;
p->tabwidth = term_len(p, 5);
n = mdoc->first->child;
if (p->synopsisonly) {
while (n != NULL) {
if (n->tok == MDOC_Sh && n->sec == SEC_SYNOPSIS) {
if (n->child->next->child != NULL)
print_mdoc_nodelist(p, NULL,
&mdoc->meta,
n->child->next->child);
term_newln(p);
break;
}
n = n->next;
}
} else {
if (p->defindent == 0)
p->defindent = 5;
term_begin(p, print_mdoc_head, print_mdoc_foot,
&mdoc->meta);
if (n != NULL) {
if (n->tok != MDOC_Sh)
term_vspace(p);
print_mdoc_nodelist(p, NULL, &mdoc->meta, n);
}
term_end(p);
}
}
static void
print_mdoc_nodelist(DECL_ARGS)
{
while (n != NULL) {
print_mdoc_node(p, pair, meta, n);
n = n->next;
}
}
static void
print_mdoc_node(DECL_ARGS)
{
int chld;
struct termpair npair;
size_t offset, rmargin;
chld = 1;
offset = p->offset;
rmargin = p->rmargin;
n->flags &= ~MDOC_ENDED;
n->prev_font = p->fonti;
memset(&npair, 0, sizeof(struct termpair));
npair.ppair = pair;
/*
* Keeps only work until the end of a line. If a keep was
* invoked in a prior line, revert it to PREKEEP.
*/
if (p->flags & TERMP_KEEP && n->flags & MDOC_LINE) {
p->flags &= ~TERMP_KEEP;
p->flags |= TERMP_PREKEEP;
}
/*
* After the keep flags have been set up, we may now
* produce output. Note that some pre-handlers do so.
*/
switch (n->type) {
case ROFFT_TEXT:
if (' ' == *n->string && MDOC_LINE & n->flags)
term_newln(p);
if (MDOC_DELIMC & n->flags)
p->flags |= TERMP_NOSPACE;
term_word(p, n->string);
if (MDOC_DELIMO & n->flags)
p->flags |= TERMP_NOSPACE;
break;
case ROFFT_EQN:
if ( ! (n->flags & MDOC_LINE))
p->flags |= TERMP_NOSPACE;
term_eqn(p, n->eqn);
if (n->next != NULL && ! (n->next->flags & MDOC_LINE))
p->flags |= TERMP_NOSPACE;
break;
case ROFFT_TBL:
if (p->tbl.cols == NULL)
term_newln(p);
term_tbl(p, n->span);
break;
default:
if (termacts[n->tok].pre &&
(n->end == ENDBODY_NOT || n->nchild))
chld = (*termacts[n->tok].pre)
(p, &npair, meta, n);
break;
}
if (chld && n->child)
print_mdoc_nodelist(p, &npair, meta, n->child);
term_fontpopq(p,
(ENDBODY_NOT == n->end ? n : n->body)->prev_font);
switch (n->type) {
case ROFFT_TEXT:
break;
case ROFFT_TBL:
break;
case ROFFT_EQN:
break;
default:
if ( ! termacts[n->tok].post || MDOC_ENDED & n->flags)
break;
(void)(*termacts[n->tok].post)(p, &npair, meta, n);
/*
* Explicit end tokens not only call the post
* handler, but also tell the respective block
* that it must not call the post handler again.
*/
if (ENDBODY_NOT != n->end)
n->body->flags |= MDOC_ENDED;
/*
* End of line terminating an implicit block
* while an explicit block is still open.
* Continue the explicit block without spacing.
*/
if (ENDBODY_NOSPACE == n->end)
p->flags |= TERMP_NOSPACE;
break;
}
if (MDOC_EOS & n->flags)
p->flags |= TERMP_SENTENCE;
if (MDOC_ll != n->tok) {
p->offset = offset;
p->rmargin = rmargin;
}
}
static void
print_mdoc_foot(struct termp *p, const struct roff_meta *meta)
{
size_t sz;
term_fontrepl(p, TERMFONT_NONE);
/*
* Output the footer in new-groff style, that is, three columns
* with the middle being the manual date and flanking columns
* being the operating system:
*
* SYSTEM DATE SYSTEM
*/
term_vspace(p);
p->offset = 0;
sz = term_strlen(p, meta->date);
p->rmargin = p->maxrmargin > sz ?
(p->maxrmargin + term_len(p, 1) - sz) / 2 : 0;
p->trailspace = 1;
p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
term_word(p, meta->os);
term_flushln(p);
p->offset = p->rmargin;
sz = term_strlen(p, meta->os);
p->rmargin = p->maxrmargin > sz ? p->maxrmargin - sz : 0;
p->flags |= TERMP_NOSPACE;
term_word(p, meta->date);
term_flushln(p);
p->offset = p->rmargin;
p->rmargin = p->maxrmargin;
p->trailspace = 0;
p->flags &= ~TERMP_NOBREAK;
p->flags |= TERMP_NOSPACE;
term_word(p, meta->os);
term_flushln(p);
p->offset = 0;
p->rmargin = p->maxrmargin;
p->flags = 0;
}
static void
print_mdoc_head(struct termp *p, const struct roff_meta *meta)
{
char *volume, *title;
size_t vollen, titlen;
/*
* The header is strange. It has three components, which are
* really two with the first duplicated. It goes like this:
*
* IDENTIFIER TITLE IDENTIFIER
*
* The IDENTIFIER is NAME(SECTION), which is the command-name
* (if given, or "unknown" if not) followed by the manual page
* section. These are given in `Dt'. The TITLE is a free-form
* string depending on the manual volume. If not specified, it
* switches on the manual section.
*/
assert(meta->vol);
if (NULL == meta->arch)
volume = mandoc_strdup(meta->vol);
else
mandoc_asprintf(&volume, "%s (%s)",
meta->vol, meta->arch);
vollen = term_strlen(p, volume);
if (NULL == meta->msec)
title = mandoc_strdup(meta->title);
else
mandoc_asprintf(&title, "%s(%s)",
meta->title, meta->msec);
titlen = term_strlen(p, title);
p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
p->trailspace = 1;
p->offset = 0;
p->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
(p->maxrmargin - vollen + term_len(p, 1)) / 2 :
vollen < p->maxrmargin ? p->maxrmargin - vollen : 0;
term_word(p, title);
term_flushln(p);
p->flags |= TERMP_NOSPACE;
p->offset = p->rmargin;
p->rmargin = p->offset + vollen + titlen < p->maxrmargin ?
p->maxrmargin - titlen : p->maxrmargin;
term_word(p, volume);
term_flushln(p);
p->flags &= ~TERMP_NOBREAK;
p->trailspace = 0;
if (p->rmargin + titlen <= p->maxrmargin) {
p->flags |= TERMP_NOSPACE;
p->offset = p->rmargin;
p->rmargin = p->maxrmargin;
term_word(p, title);
term_flushln(p);
}
p->flags &= ~TERMP_NOSPACE;
p->offset = 0;
p->rmargin = p->maxrmargin;
free(title);
free(volume);
}
static int
a2width(const struct termp *p, const char *v)
{
struct roffsu su;
if (a2roffsu(v, &su, SCALE_MAX) < 2) {
SCALE_HS_INIT(&su, term_strlen(p, v));
su.scale /= term_strlen(p, "0");
}
return term_hspan(p, &su) / 24;
}
/*
* Determine how much space to print out before block elements of `It'
* (and thus `Bl') and `Bd'. And then go ahead and print that space,
* too.
*/
static void
print_bvspace(struct termp *p,
const struct roff_node *bl,
const struct roff_node *n)
{
const struct roff_node *nn;
assert(n);
term_newln(p);
if (MDOC_Bd == bl->tok && bl->norm->Bd.comp)
return;
if (MDOC_Bl == bl->tok && bl->norm->Bl.comp)
return;
/* Do not vspace directly after Ss/Sh. */
nn = n;
while (nn->prev == NULL) {
do {
nn = nn->parent;
if (nn->type == ROFFT_ROOT)
return;
} while (nn->type != ROFFT_BLOCK);
if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
return;
if (nn->tok == MDOC_It &&
nn->parent->parent->norm->Bl.type != LIST_item)
break;
}
/* A `-column' does not assert vspace within the list. */
if (MDOC_Bl == bl->tok && LIST_column == bl->norm->Bl.type)
if (n->prev && MDOC_It == n->prev->tok)
return;
/* A `-diag' without body does not vspace. */
if (MDOC_Bl == bl->tok && LIST_diag == bl->norm->Bl.type)
if (n->prev && MDOC_It == n->prev->tok) {
assert(n->prev->body);
if (NULL == n->prev->body->child)
return;
}
term_vspace(p);
}
static int
termp_ll_pre(DECL_ARGS)
{
term_setwidth(p, n->nchild ? n->child->string : NULL);
return 0;
}
static int
termp_it_pre(DECL_ARGS)
{
char buf[24];
const struct roff_node *bl, *nn;
size_t ncols, dcol;
int i, offset, width;
enum mdoc_list type;
if (n->type == ROFFT_BLOCK) {
print_bvspace(p, n->parent->parent, n);
return 1;
}
bl = n->parent->parent->parent;
type = bl->norm->Bl.type;
/*
* Defaults for specific list types.
*/
switch (type) {
case LIST_bullet:
case LIST_dash:
case LIST_hyphen:
case LIST_enum:
width = term_len(p, 2);
break;
case LIST_hang:
width = term_len(p, 8);
break;
case LIST_column:
case LIST_tag:
width = term_len(p, 10);
break;
default:
width = 0;
break;
}
offset = 0;
/*
* First calculate width and offset. This is pretty easy unless
* we're a -column list, in which case all prior columns must
* be accounted for.
*/
if (bl->norm->Bl.offs != NULL) {
offset = a2width(p, bl->norm->Bl.offs);
if (offset < 0 && (size_t)(-offset) > p->offset)
offset = -p->offset;
else if (offset > SHRT_MAX)
offset = 0;
}
switch (type) {
case LIST_column:
if (n->type == ROFFT_HEAD)
break;
/*
* Imitate groff's column handling:
* - For each earlier column, add its width.
* - For less than 5 columns, add four more blanks per
* column.
* - For exactly 5 columns, add three more blank per
* column.
* - For more than 5 columns, add only one column.
*/
ncols = bl->norm->Bl.ncols;
dcol = ncols < 5 ? term_len(p, 4) :
ncols == 5 ? term_len(p, 3) : term_len(p, 1);
/*
* Calculate the offset by applying all prior ROFFT_BODY,
* so we stop at the ROFFT_HEAD (nn->prev == NULL).
*/
for (i = 0, nn = n->prev;
nn->prev && i < (int)ncols;
nn = nn->prev, i++)
offset += dcol + a2width(p,
bl->norm->Bl.cols[i]);
/*
* When exceeding the declared number of columns, leave
* the remaining widths at 0. This will later be
* adjusted to the default width of 10, or, for the last
* column, stretched to the right margin.
*/
if (i >= (int)ncols)
break;
/*
* Use the declared column widths, extended as explained
* in the preceding paragraph.
*/
width = a2width(p, bl->norm->Bl.cols[i]) + dcol;
break;
default:
if (NULL == bl->norm->Bl.width)
break;
/*
* Note: buffer the width by 2, which is groff's magic
* number for buffering single arguments. See the above
* handling for column for how this changes.
*/
width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
if (width < 0 && (size_t)(-width) > p->offset)
width = -p->offset;
else if (width > SHRT_MAX)
width = 0;
break;
}
/*
* Whitespace control. Inset bodies need an initial space,
* while diagonal bodies need two.
*/
p->flags |= TERMP_NOSPACE;
switch (type) {
case LIST_diag:
if (n->type == ROFFT_BODY)
term_word(p, "\\ \\ ");
break;
case LIST_inset:
if (n->type == ROFFT_BODY && n->parent->head->nchild)
term_word(p, "\\ ");
break;
default:
break;
}
p->flags |= TERMP_NOSPACE;
switch (type) {
case LIST_diag:
if (n->type == ROFFT_HEAD)
term_fontpush(p, TERMFONT_BOLD);
break;
default:
break;
}
/*
* Pad and break control. This is the tricky part. These flags
* are documented in term_flushln() in term.c. Note that we're
* going to unset all of these flags in termp_it_post() when we
* exit.
*/
switch (type) {
case LIST_enum:
case LIST_bullet:
case LIST_dash:
case LIST_hyphen:
/*
* Weird special case.
* Some very narrow lists actually hang.
*/
if (width <= (int)term_len(p, 2))
p->flags |= TERMP_HANG;
if (n->type != ROFFT_HEAD)
break;
p->flags |= TERMP_NOBREAK;
p->trailspace = 1;
break;
case LIST_hang:
if (n->type != ROFFT_HEAD)
break;
/*
* This is ugly. If `-hang' is specified and the body
* is a `Bl' or `Bd', then we want basically to nullify
* the "overstep" effect in term_flushln() and treat
* this as a `-ohang' list instead.
*/
if (NULL != n->next &&
NULL != n->next->child &&
(MDOC_Bl == n->next->child->tok ||
MDOC_Bd == n->next->child->tok))
break;
p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
p->trailspace = 1;
break;
case LIST_tag:
if (n->type != ROFFT_HEAD)
break;
p->flags |= TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND;
p->trailspace = 2;
if (NULL == n->next || NULL == n->next->child)
p->flags |= TERMP_DANGLE;
break;
case LIST_column:
if (n->type == ROFFT_HEAD)
break;
if (NULL == n->next) {
p->flags &= ~TERMP_NOBREAK;
p->trailspace = 0;
} else {
p->flags |= TERMP_NOBREAK;
p->trailspace = 1;
}
break;
case LIST_diag:
if (n->type != ROFFT_HEAD)
break;
p->flags |= TERMP_NOBREAK | TERMP_BRIND;
p->trailspace = 1;
break;
default:
break;
}
/*
* Margin control. Set-head-width lists have their right
* margins shortened. The body for these lists has the offset
* necessarily lengthened. Everybody gets the offset.
*/
p->offset += offset;
switch (type) {
case LIST_hang:
/*
* Same stipulation as above, regarding `-hang'. We
* don't want to recalculate rmargin and offsets when
* using `Bd' or `Bl' within `-hang' overstep lists.
*/
if (n->type == ROFFT_HEAD &&
NULL != n->next &&
NULL != n->next->child &&
(MDOC_Bl == n->next->child->tok ||
MDOC_Bd == n->next->child->tok))
break;
/* FALLTHROUGH */
case LIST_bullet:
case LIST_dash:
case LIST_enum:
case LIST_hyphen:
case LIST_tag:
if (n->type == ROFFT_HEAD)
p->rmargin = p->offset + width;
else
p->offset += width;
break;
case LIST_column:
assert(width);
p->rmargin = p->offset + width;
/*
* XXX - this behaviour is not documented: the
* right-most column is filled to the right margin.
*/
if (n->type == ROFFT_HEAD)
break;
if (NULL == n->next && p->rmargin < p->maxrmargin)
p->rmargin = p->maxrmargin;
break;
default:
break;
}
/*
* The dash, hyphen, bullet and enum lists all have a special
* HEAD character (temporarily bold, in some cases).
*/
if (n->type == ROFFT_HEAD)
switch (type) {
case LIST_bullet:
term_fontpush(p, TERMFONT_BOLD);
term_word(p, "\\[bu]");
term_fontpop(p);
break;
case LIST_dash:
case LIST_hyphen:
term_fontpush(p, TERMFONT_BOLD);
term_word(p, "-");
term_fontpop(p);
break;
case LIST_enum:
(pair->ppair->ppair->count)++;
(void)snprintf(buf, sizeof(buf), "%d.",
pair->ppair->ppair->count);
term_word(p, buf);
break;
default:
break;
}
/*
* If we're not going to process our children, indicate so here.
*/
switch (type) {
case LIST_bullet:
case LIST_item:
case LIST_dash:
case LIST_hyphen:
case LIST_enum:
if (n->type == ROFFT_HEAD)
return 0;
break;
case LIST_column:
if (n->type == ROFFT_HEAD)
return 0;
break;
default:
break;
}
return 1;
}
static void
termp_it_post(DECL_ARGS)
{
enum mdoc_list type;
if (n->type == ROFFT_BLOCK)
return;
type = n->parent->parent->parent->norm->Bl.type;
switch (type) {
case LIST_item:
case LIST_diag:
case LIST_inset:
if (n->type == ROFFT_BODY)
term_newln(p);
break;
case LIST_column:
if (n->type == ROFFT_BODY)
term_flushln(p);
break;
default:
term_newln(p);
break;
}
/*
* Now that our output is flushed, we can reset our tags. Since
* only `It' sets these flags, we're free to assume that nobody
* has munged them in the meanwhile.
*/
p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND |
TERMP_DANGLE | TERMP_HANG);
p->trailspace = 0;
}
static int
termp_nm_pre(DECL_ARGS)
{
const char *cp;
if (n->type == ROFFT_BLOCK) {
p->flags |= TERMP_PREKEEP;
return 1;
}
if (n->type == ROFFT_BODY) {
if (NULL == n->child)
return 0;
p->flags |= TERMP_NOSPACE;
cp = NULL;
if (n->prev->child != NULL)
cp = n->prev->child->string;
if (cp == NULL)
cp = meta->name;
if (cp == NULL)
p->offset += term_len(p, 6);
else
p->offset += term_len(p, 1) + term_strlen(p, cp);
return 1;
}
if (NULL == n->child && NULL == meta->name)
return 0;
if (n->type == ROFFT_HEAD)
synopsis_pre(p, n->parent);
if (n->type == ROFFT_HEAD &&
NULL != n->next && NULL != n->next->child) {
p->flags |= TERMP_NOSPACE | TERMP_NOBREAK | TERMP_BRIND;
p->trailspace = 1;
p->rmargin = p->offset + term_len(p, 1);