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mandoc: update to 1.14.5
[unleashed.git] / bin / mandoc / tbl_term.c
bloba197f8ef743a8fbd0b6ea6c27b515b35934dbc34
1 /* $Id: tbl_term.c,v 1.68 2019/02/09 21:02:47 schwarze Exp $ */
2 /*
3 * Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2011-2019 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 #include "config.h"
19
20 #include <sys/types.h>
21
22 #include <assert.h>
23 #include <ctype.h>
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <string.h>
27
28 #include "mandoc.h"
29 #include "tbl.h"
30 #include "out.h"
31 #include "term.h"
32
33 #define IS_HORIZ(cp) ((cp)->pos == TBL_CELL_HORIZ || \
34 (cp)->pos == TBL_CELL_DHORIZ)
35
36
37 static size_t term_tbl_len(size_t, void *);
38 static size_t term_tbl_strlen(const char *, void *);
39 static size_t term_tbl_sulen(const struct roffsu *, void *);
40 static void tbl_data(struct termp *, const struct tbl_opts *,
41 const struct tbl_cell *,
42 const struct tbl_dat *,
43 const struct roffcol *);
44 static void tbl_direct_border(struct termp *, int, size_t);
45 static void tbl_fill_border(struct termp *, int, size_t);
46 static void tbl_fill_char(struct termp *, char, size_t);
47 static void tbl_fill_string(struct termp *, const char *, size_t);
48 static void tbl_hrule(struct termp *, const struct tbl_span *,
49 const struct tbl_span *, int);
50 static void tbl_literal(struct termp *, const struct tbl_dat *,
51 const struct roffcol *);
52 static void tbl_number(struct termp *, const struct tbl_opts *,
53 const struct tbl_dat *,
54 const struct roffcol *);
55 static void tbl_word(struct termp *, const struct tbl_dat *);
56
57
58 /*
59 * The following border-character tables are indexed
60 * by ternary (3-based) numbers, as opposed to binary or decimal.
61 * Each ternary digit describes the line width in one direction:
62 * 0 means no line, 1 single or light line, 2 double or heavy line.
63 */
64
65 /* Positional values of the four directions. */
66 #define BRIGHT 1
67 #define BDOWN 3
68 #define BLEFT (3 * 3)
69 #define BUP (3 * 3 * 3)
70 #define BHORIZ (BLEFT + BRIGHT)
71
72 /* Code points to use for each combination of widths. */
73 static const int borders_utf8[81] = {
74 0x0020, 0x2576, 0x257a, /* 000 right */
75 0x2577, 0x250c, 0x250d, /* 001 down */
76 0x257b, 0x250e, 0x250f, /* 002 */
77 0x2574, 0x2500, 0x257c, /* 010 left */
78 0x2510, 0x252c, 0x252e, /* 011 left down */
79 0x2512, 0x2530, 0x2532, /* 012 */
80 0x2578, 0x257e, 0x2501, /* 020 left */
81 0x2511, 0x252d, 0x252f, /* 021 left down */
82 0x2513, 0x2531, 0x2533, /* 022 */
83 0x2575, 0x2514, 0x2515, /* 100 up */
84 0x2502, 0x251c, 0x251d, /* 101 up down */
85 0x257d, 0x251f, 0x2522, /* 102 */
86 0x2518, 0x2534, 0x2536, /* 110 up left */
87 0x2524, 0x253c, 0x253e, /* 111 all */
88 0x2527, 0x2541, 0x2546, /* 112 */
89 0x2519, 0x2535, 0x2537, /* 120 up left */
90 0x2525, 0x253d, 0x253f, /* 121 all */
91 0x252a, 0x2545, 0x2548, /* 122 */
92 0x2579, 0x2516, 0x2517, /* 200 up */
93 0x257f, 0x251e, 0x2521, /* 201 up down */
94 0x2503, 0x2520, 0x2523, /* 202 */
95 0x251a, 0x2538, 0x253a, /* 210 up left */
96 0x2526, 0x2540, 0x2544, /* 211 all */
97 0x2528, 0x2542, 0x254a, /* 212 */
98 0x251b, 0x2539, 0x253b, /* 220 up left */
99 0x2529, 0x2543, 0x2547, /* 221 all */
100 0x252b, 0x2549, 0x254b, /* 222 */
101 };
102
103 /* ASCII approximations for these code points, compatible with groff. */
104 static const int borders_ascii[81] = {
105 ' ', '-', '=', /* 000 right */
106 '|', '+', '+', /* 001 down */
107 '|', '+', '+', /* 002 */
108 '-', '-', '=', /* 010 left */
109 '+', '+', '+', /* 011 left down */
110 '+', '+', '+', /* 012 */
111 '=', '=', '=', /* 020 left */
112 '+', '+', '+', /* 021 left down */
113 '+', '+', '+', /* 022 */
114 '|', '+', '+', /* 100 up */
115 '|', '+', '+', /* 101 up down */
116 '|', '+', '+', /* 102 */
117 '+', '+', '+', /* 110 up left */
118 '+', '+', '+', /* 111 all */
119 '+', '+', '+', /* 112 */
120 '+', '+', '+', /* 120 up left */
121 '+', '+', '+', /* 121 all */
122 '+', '+', '+', /* 122 */
123 '|', '+', '+', /* 200 up */
124 '|', '+', '+', /* 201 up down */
125 '|', '+', '+', /* 202 */
126 '+', '+', '+', /* 210 up left */
127 '+', '+', '+', /* 211 all */
128 '+', '+', '+', /* 212 */
129 '+', '+', '+', /* 220 up left */
130 '+', '+', '+', /* 221 all */
131 '+', '+', '+', /* 222 */
132 };
133
134 /* Either of the above according to the selected output encoding. */
135 static const int *borders_locale;
136
137
138 static size_t
139 term_tbl_sulen(const struct roffsu *su, void *arg)
140 {
141 int i;
142
143 i = term_hen((const struct termp *)arg, su);
144 return i > 0 ? i : 0;
145 }
146
147 static size_t
148 term_tbl_strlen(const char *p, void *arg)
149 {
150 return term_strlen((const struct termp *)arg, p);
151 }
152
153 static size_t
154 term_tbl_len(size_t sz, void *arg)
155 {
156 return term_len((const struct termp *)arg, sz);
157 }
158
159
160 void
161 term_tbl(struct termp *tp, const struct tbl_span *sp)
162 {
163 const struct tbl_cell *cp, *cpn, *cpp, *cps;
164 const struct tbl_dat *dp;
165 static size_t offset;
166 size_t save_offset;
167 size_t coloff, tsz;
168 int hspans, ic, more;
169 int dvert, fc, horiz, lhori, rhori, uvert;
170
171 /* Inhibit printing of spaces: we do padding ourselves. */
172
173 tp->flags |= TERMP_NOSPACE | TERMP_NONOSPACE;
174 save_offset = tp->tcol->offset;
175
176 /*
177 * The first time we're invoked for a given table block,
178 * calculate the table widths and decimal positions.
179 */
180
181 if (tp->tbl.cols == NULL) {
182 borders_locale = tp->enc == TERMENC_UTF8 ?
183 borders_utf8 : borders_ascii;
184
185 tp->tbl.len = term_tbl_len;
186 tp->tbl.slen = term_tbl_strlen;
187 tp->tbl.sulen = term_tbl_sulen;
188 tp->tbl.arg = tp;
189
190 tblcalc(&tp->tbl, sp, tp->tcol->offset, tp->tcol->rmargin);
191
192 /* Tables leak .ta settings to subsequent text. */
193
194 term_tab_set(tp, NULL);
195 coloff = sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ||
196 sp->opts->lvert;
197 for (ic = 0; ic < sp->opts->cols; ic++) {
198 coloff += tp->tbl.cols[ic].width;
199 term_tab_iset(coloff);
200 coloff += tp->tbl.cols[ic].spacing;
201 }
202
203 /* Center the table as a whole. */
204
205 offset = tp->tcol->offset;
206 if (sp->opts->opts & TBL_OPT_CENTRE) {
207 tsz = sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX)
208 ? 2 : !!sp->opts->lvert + !!sp->opts->rvert;
209 for (ic = 0; ic + 1 < sp->opts->cols; ic++)
210 tsz += tp->tbl.cols[ic].width +
211 tp->tbl.cols[ic].spacing;
212 if (sp->opts->cols)
213 tsz += tp->tbl.cols[sp->opts->cols - 1].width;
214 if (offset + tsz > tp->tcol->rmargin)
215 tsz -= 1;
216 offset = offset + tp->tcol->rmargin > tsz ?
217 (offset + tp->tcol->rmargin - tsz) / 2 : 0;
218 tp->tcol->offset = offset;
219 }
220
221 /* Horizontal frame at the start of boxed tables. */
222
223 if (tp->enc == TERMENC_ASCII &&
224 sp->opts->opts & TBL_OPT_DBOX)
225 tbl_hrule(tp, NULL, sp, TBL_OPT_DBOX);
226 if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX))
227 tbl_hrule(tp, NULL, sp, TBL_OPT_BOX);
228 }
229
230 /* Set up the columns. */
231
232 tp->flags |= TERMP_MULTICOL;
233 tp->tcol->offset = offset;
234 horiz = 0;
235 switch (sp->pos) {
236 case TBL_SPAN_HORIZ:
237 case TBL_SPAN_DHORIZ:
238 horiz = 1;
239 term_setcol(tp, 1);
240 break;
241 case TBL_SPAN_DATA:
242 term_setcol(tp, sp->opts->cols + 2);
243 coloff = tp->tcol->offset;
244
245 /* Set up a column for a left vertical frame. */
246
247 if (sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ||
248 sp->opts->lvert)
249 coloff++;
250 tp->tcol->rmargin = coloff;
251
252 /* Set up the data columns. */
253
254 dp = sp->first;
255 hspans = 0;
256 for (ic = 0; ic < sp->opts->cols; ic++) {
257 if (hspans == 0) {
258 tp->tcol++;
259 tp->tcol->offset = coloff;
260 }
261 coloff += tp->tbl.cols[ic].width;
262 tp->tcol->rmargin = coloff;
263 if (ic + 1 < sp->opts->cols)
264 coloff += tp->tbl.cols[ic].spacing;
265 if (hspans) {
266 hspans--;
267 continue;
268 }
269 if (dp == NULL)
270 continue;
271 hspans = dp->hspans;
272 if (ic || sp->layout->first->pos != TBL_CELL_SPAN)
273 dp = dp->next;
274 }
275
276 /* Set up a column for a right vertical frame. */
277
278 tp->tcol++;
279 tp->tcol->offset = coloff + 1;
280 tp->tcol->rmargin = tp->maxrmargin;
281
282 /* Spans may have reduced the number of columns. */
283
284 tp->lasttcol = tp->tcol - tp->tcols;
285
286 /* Fill the buffers for all data columns. */
287
288 tp->tcol = tp->tcols;
289 cp = cpn = sp->layout->first;
290 dp = sp->first;
291 hspans = 0;
292 for (ic = 0; ic < sp->opts->cols; ic++) {
293 if (cpn != NULL) {
294 cp = cpn;
295 cpn = cpn->next;
296 }
297 if (hspans) {
298 hspans--;
299 continue;
300 }
301 tp->tcol++;
302 tp->col = 0;
303 tbl_data(tp, sp->opts, cp, dp, tp->tbl.cols + ic);
304 if (dp == NULL)
305 continue;
306 hspans = dp->hspans;
307 if (cp->pos != TBL_CELL_SPAN)
308 dp = dp->next;
309 }
310 break;
311 }
312
313 do {
314 /* Print the vertical frame at the start of each row. */
315
316 tp->tcol = tp->tcols;
317 uvert = dvert = sp->opts->opts & TBL_OPT_DBOX ? 2 :
318 sp->opts->opts & TBL_OPT_BOX ? 1 : 0;
319 if (sp->pos == TBL_SPAN_DATA && uvert < sp->layout->vert)
320 uvert = dvert = sp->layout->vert;
321 if (sp->next != NULL && sp->next->pos == TBL_SPAN_DATA &&
322 dvert < sp->next->layout->vert)
323 dvert = sp->next->layout->vert;
324 if (sp->prev != NULL && uvert < sp->prev->layout->vert &&
325 (horiz || (IS_HORIZ(sp->layout->first) &&
326 !IS_HORIZ(sp->prev->layout->first))))
327 uvert = sp->prev->layout->vert;
328 rhori = sp->pos == TBL_SPAN_DHORIZ ||
329 (sp->first != NULL && sp->first->pos == TBL_DATA_DHORIZ) ||
330 sp->layout->first->pos == TBL_CELL_DHORIZ ? 2 :
331 sp->pos == TBL_SPAN_HORIZ ||
332 (sp->first != NULL && sp->first->pos == TBL_DATA_HORIZ) ||
333 sp->layout->first->pos == TBL_CELL_HORIZ ? 1 : 0;
334 fc = BUP * uvert + BDOWN * dvert + BRIGHT * rhori;
335 if (uvert > 0 || dvert > 0 || (horiz && sp->opts->lvert)) {
336 (*tp->advance)(tp, tp->tcols->offset);
337 tp->viscol = tp->tcol->offset;
338 tbl_direct_border(tp, fc, 1);
339 }
340
341 /* Print the data cells. */
342
343 more = 0;
344 if (horiz)
345 tbl_hrule(tp, sp->prev, sp, 0);
346 else {
347 cp = sp->layout->first;
348 cpn = sp->next == NULL ? NULL :
349 sp->next->layout->first;
350 cpp = sp->prev == NULL ? NULL :
351 sp->prev->layout->first;
352 dp = sp->first;
353 hspans = 0;
354 for (ic = 0; ic < sp->opts->cols; ic++) {
355
356 /*
357 * Figure out whether to print a
358 * vertical line after this cell
359 * and advance to next layout cell.
360 */
361
362 uvert = dvert = fc = 0;
363 if (cp != NULL) {
364 cps = cp;
365 while (cps->next != NULL &&
366 cps->next->pos == TBL_CELL_SPAN)
367 cps = cps->next;
368 if (sp->pos == TBL_SPAN_DATA)
369 uvert = dvert = cps->vert;
370 switch (cp->pos) {
371 case TBL_CELL_HORIZ:
372 fc = BHORIZ;
373 break;
374 case TBL_CELL_DHORIZ:
375 fc = BHORIZ * 2;
376 break;
377 default:
378 break;
379 }
380 }
381 if (cpp != NULL) {
382 if (uvert < cpp->vert &&
383 cp != NULL &&
384 ((IS_HORIZ(cp) &&
385 !IS_HORIZ(cpp)) ||
386 (cp->next != NULL &&
387 cpp->next != NULL &&
388 IS_HORIZ(cp->next) &&
389 !IS_HORIZ(cpp->next))))
390 uvert = cpp->vert;
391 cpp = cpp->next;
392 }
393 if (sp->opts->opts & TBL_OPT_ALLBOX) {
394 if (uvert == 0)
395 uvert = 1;
396 if (dvert == 0)
397 dvert = 1;
398 }
399 if (cpn != NULL) {
400 if (dvert == 0 ||
401 (dvert < cpn->vert &&
402 tp->enc == TERMENC_UTF8))
403 dvert = cpn->vert;
404 cpn = cpn->next;
405 }
406
407 lhori = (cp != NULL &&
408 cp->pos == TBL_CELL_DHORIZ) ||
409 (dp != NULL &&
410 dp->pos == TBL_DATA_DHORIZ) ? 2 :
411 (cp != NULL &&
412 cp->pos == TBL_CELL_HORIZ) ||
413 (dp != NULL &&
414 dp->pos == TBL_DATA_HORIZ) ? 1 : 0;
415
416 /*
417 * Skip later cells in a span,
418 * figure out whether to start a span,
419 * and advance to next data cell.
420 */
421
422 if (hspans) {
423 hspans--;
424 cp = cp->next;
425 continue;
426 }
427 if (dp != NULL) {
428 hspans = dp->hspans;
429 if (ic || sp->layout->first->pos
430 != TBL_CELL_SPAN)
431 dp = dp->next;
432 }
433
434 /*
435 * Print one line of text in the cell
436 * and remember whether there is more.
437 */
438
439 tp->tcol++;
440 if (tp->tcol->col < tp->tcol->lastcol)
441 term_flushln(tp);
442 if (tp->tcol->col < tp->tcol->lastcol)
443 more = 1;
444
445 /*
446 * Vertical frames between data cells,
447 * but not after the last column.
448 */
449
450 if (fc == 0 &&
451 ((uvert == 0 && dvert == 0 &&
452 cp != NULL && (cp->next == NULL ||
453 !IS_HORIZ(cp->next))) ||
454 tp->tcol + 1 ==
455 tp->tcols + tp->lasttcol)) {
456 if (cp != NULL)
457 cp = cp->next;
458 continue;
459 }
460
461 if (tp->viscol < tp->tcol->rmargin) {
462 (*tp->advance)(tp, tp->tcol->rmargin
463 - tp->viscol);
464 tp->viscol = tp->tcol->rmargin;
465 }
466 while (tp->viscol < tp->tcol->rmargin +
467 tp->tbl.cols[ic].spacing / 2)
468 tbl_direct_border(tp,
469 BHORIZ * lhori, 1);
470
471 if (tp->tcol + 1 == tp->tcols + tp->lasttcol)
472 continue;
473
474 if (cp != NULL)
475 cp = cp->next;
476
477 rhori = (cp != NULL &&
478 cp->pos == TBL_CELL_DHORIZ) ||
479 (dp != NULL &&
480 dp->pos == TBL_DATA_DHORIZ) ? 2 :
481 (cp != NULL &&
482 cp->pos == TBL_CELL_HORIZ) ||
483 (dp != NULL &&
484 dp->pos == TBL_DATA_HORIZ) ? 1 : 0;
485
486 if (tp->tbl.cols[ic].spacing)
487 tbl_direct_border(tp,
488 BLEFT * lhori + BRIGHT * rhori +
489 BUP * uvert + BDOWN * dvert, 1);
490
491 if (tp->enc == TERMENC_UTF8)
492 uvert = dvert = 0;
493
494 if (tp->tbl.cols[ic].spacing > 2 &&
495 (uvert > 1 || dvert > 1 || rhori))
496 tbl_direct_border(tp,
497 BHORIZ * rhori +
498 BUP * (uvert > 1) +
499 BDOWN * (dvert > 1), 1);
500 }
501 }
502
503 /* Print the vertical frame at the end of each row. */
504
505 uvert = dvert = sp->opts->opts & TBL_OPT_DBOX ? 2 :
506 sp->opts->opts & TBL_OPT_BOX ? 1 : 0;
507 if (sp->pos == TBL_SPAN_DATA &&
508 uvert < sp->layout->last->vert &&
509 sp->layout->last->col + 1 == sp->opts->cols)
510 uvert = dvert = sp->layout->last->vert;
511 if (sp->next != NULL &&
512 dvert < sp->next->layout->last->vert &&
513 sp->next->layout->last->col + 1 == sp->opts->cols)
514 dvert = sp->next->layout->last->vert;
515 if (sp->prev != NULL &&
516 uvert < sp->prev->layout->last->vert &&
517 sp->prev->layout->last->col + 1 == sp->opts->cols &&
518 (horiz || (IS_HORIZ(sp->layout->last) &&
519 !IS_HORIZ(sp->prev->layout->last))))
520 uvert = sp->prev->layout->last->vert;
521 lhori = sp->pos == TBL_SPAN_DHORIZ ||
522 (sp->last != NULL &&
523 sp->last->pos == TBL_DATA_DHORIZ &&
524 sp->last->layout->col + 1 == sp->opts->cols) ||
525 (sp->layout->last->pos == TBL_CELL_DHORIZ &&
526 sp->layout->last->col + 1 == sp->opts->cols) ? 2 :
527 sp->pos == TBL_SPAN_HORIZ ||
528 (sp->last != NULL &&
529 sp->last->pos == TBL_DATA_HORIZ &&
530 sp->last->layout->col + 1 == sp->opts->cols) ||
531 (sp->layout->last->pos == TBL_CELL_HORIZ &&
532 sp->layout->last->col + 1 == sp->opts->cols) ? 1 : 0;
533 fc = BUP * uvert + BDOWN * dvert + BLEFT * lhori;
534 if (uvert > 0 || dvert > 0 || (horiz && sp->opts->rvert)) {
535 if (horiz == 0 && (IS_HORIZ(sp->layout->last) == 0 ||
536 sp->layout->last->col + 1 < sp->opts->cols)) {
537 tp->tcol++;
538 do {
539 tbl_direct_border(tp,
540 BHORIZ * lhori, 1);
541 } while (tp->viscol < tp->tcol->offset);
542 }
543 tbl_direct_border(tp, fc, 1);
544 }
545 (*tp->endline)(tp);
546 tp->viscol = 0;
547 } while (more);
548
549 /*
550 * Clean up after this row. If it is the last line
551 * of the table, print the box line and clean up
552 * column data; otherwise, print the allbox line.
553 */
554
555 term_setcol(tp, 1);
556 tp->flags &= ~TERMP_MULTICOL;
557 tp->tcol->rmargin = tp->maxrmargin;
558 if (sp->next == NULL) {
559 if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX)) {
560 tbl_hrule(tp, sp, NULL, TBL_OPT_BOX);
561 tp->skipvsp = 1;
562 }
563 if (tp->enc == TERMENC_ASCII &&
564 sp->opts->opts & TBL_OPT_DBOX) {
565 tbl_hrule(tp, sp, NULL, TBL_OPT_DBOX);
566 tp->skipvsp = 2;
567 }
568 assert(tp->tbl.cols);
569 free(tp->tbl.cols);
570 tp->tbl.cols = NULL;
571 } else if (horiz == 0 && sp->opts->opts & TBL_OPT_ALLBOX &&
572 (sp->next == NULL || sp->next->pos == TBL_SPAN_DATA ||
573 sp->next->next != NULL))
574 tbl_hrule(tp, sp, sp->next, TBL_OPT_ALLBOX);
575
576 tp->tcol->offset = save_offset;
577 tp->flags &= ~TERMP_NONOSPACE;
578 }
579
580 static void
581 tbl_hrule(struct termp *tp, const struct tbl_span *spp,
582 const struct tbl_span *spn, int flags)
583 {
584 const struct tbl_cell *cpp; /* Layout cell above this line. */
585 const struct tbl_cell *cpn; /* Layout cell below this line. */
586 const struct tbl_dat *dpn; /* Data cell below this line. */
587 const struct roffcol *col; /* Contains width and spacing. */
588 int opts; /* For the table as a whole. */
589 int bw; /* Box line width. */
590 int hw; /* Horizontal line width. */
591 int lw, rw; /* Left and right line widths. */
592 int uw, dw; /* Vertical line widths. */
593
594 cpp = spp == NULL ? NULL : spp->layout->first;
595 cpn = spn == NULL ? NULL : spn->layout->first;
596 dpn = NULL;
597 if (spn != NULL) {
598 if (spn->pos == TBL_SPAN_DATA)
599 dpn = spn->first;
600 else if (spn->next != NULL)
601 dpn = spn->next->first;
602 }
603 opts = spn == NULL ? spp->opts->opts : spn->opts->opts;
604 bw = opts & TBL_OPT_DBOX ? (tp->enc == TERMENC_UTF8 ? 2 : 1) :
605 opts & (TBL_OPT_BOX | TBL_OPT_ALLBOX) ? 1 : 0;
606 hw = flags == TBL_OPT_DBOX || flags == TBL_OPT_BOX ? bw :
607 spn->pos == TBL_SPAN_DHORIZ ? 2 : 1;
608
609 /* Print the left end of the line. */
610
611 if (tp->viscol == 0) {
612 (*tp->advance)(tp, tp->tcols->offset);
613 tp->viscol = tp->tcols->offset;
614 }
615 if (flags != 0)
616 tbl_direct_border(tp,
617 (spp == NULL ? 0 : BUP * bw) +
618 (spn == NULL ? 0 : BDOWN * bw) +
619 (spp == NULL || cpn == NULL ||
620 cpn->pos != TBL_CELL_DOWN ? BRIGHT * hw : 0), 1);
621
622 for (;;) {
623 col = tp->tbl.cols + (cpn == NULL ? cpp->col : cpn->col);
624
625 /* Print the horizontal line inside this column. */
626
627 lw = cpp == NULL || cpn == NULL ||
628 (cpn->pos != TBL_CELL_DOWN &&
629 (dpn == NULL || strcmp(dpn->string, "\\^") != 0))
630 ? hw : 0;
631 tbl_direct_border(tp, BHORIZ * lw,
632 col->width + col->spacing / 2);
633
634 /*
635 * Figure out whether a vertical line is crossing
636 * at the end of this column,
637 * and advance to the next column.
638 */
639
640 uw = dw = 0;
641 if (cpp != NULL) {
642 if (flags != TBL_OPT_DBOX) {
643 uw = cpp->vert;
644 if (uw == 0 && opts & TBL_OPT_ALLBOX)
645 uw = 1;
646 }
647 cpp = cpp->next;
648 }
649 if (cpn != NULL) {
650 if (flags != TBL_OPT_DBOX) {
651 dw = cpn->vert;
652 if (dw == 0 && opts & TBL_OPT_ALLBOX)
653 dw = 1;
654 }
655 cpn = cpn->next;
656 while (dpn != NULL && dpn->layout != cpn)
657 dpn = dpn->next;
658 }
659 if (cpp == NULL && cpn == NULL)
660 break;
661
662 /* Vertical lines do not cross spanned cells. */
663
664 if (cpp != NULL && cpp->pos == TBL_CELL_SPAN)
665 uw = 0;
666 if (cpn != NULL && cpn->pos == TBL_CELL_SPAN)
667 dw = 0;
668
669 /* The horizontal line inside the next column. */
670
671 rw = cpp == NULL || cpn == NULL ||
672 (cpn->pos != TBL_CELL_DOWN &&
673 (dpn == NULL || strcmp(dpn->string, "\\^") != 0))
674 ? hw : 0;
675
676 /* The line crossing at the end of this column. */
677
678 if (col->spacing)
679 tbl_direct_border(tp, BLEFT * lw +
680 BRIGHT * rw + BUP * uw + BDOWN * dw, 1);
681
682 /*
683 * In ASCII output, a crossing may print two characters.
684 */
685
686 if (tp->enc != TERMENC_ASCII || (uw < 2 && dw < 2))
687 uw = dw = 0;
688 if (col->spacing > 2)
689 tbl_direct_border(tp,
690 BHORIZ * rw + BUP * uw + BDOWN * dw, 1);
691
692 /* Padding before the start of the next column. */
693
694 if (col->spacing > 4)
695 tbl_direct_border(tp,
696 BHORIZ * rw, (col->spacing - 3) / 2);
697 }
698
699 /* Print the right end of the line. */
700
701 if (flags != 0) {
702 tbl_direct_border(tp,
703 (spp == NULL ? 0 : BUP * bw) +
704 (spn == NULL ? 0 : BDOWN * bw) +
705 (spp == NULL || spn == NULL ||
706 spn->layout->last->pos != TBL_CELL_DOWN ?
707 BLEFT * hw : 0), 1);
708 (*tp->endline)(tp);
709 tp->viscol = 0;
710 }
711 }
712
713 static void
714 tbl_data(struct termp *tp, const struct tbl_opts *opts,
715 const struct tbl_cell *cp, const struct tbl_dat *dp,
716 const struct roffcol *col)
717 {
718 switch (cp->pos) {
719 case TBL_CELL_HORIZ:
720 tbl_fill_border(tp, BHORIZ, col->width);
721 return;
722 case TBL_CELL_DHORIZ:
723 tbl_fill_border(tp, BHORIZ * 2, col->width);
724 return;
725 default:
726 break;
727 }
728
729 if (dp == NULL)
730 return;
731
732 switch (dp->pos) {
733 case TBL_DATA_NONE:
734 return;
735 case TBL_DATA_HORIZ:
736 case TBL_DATA_NHORIZ:
737 tbl_fill_border(tp, BHORIZ, col->width);
738 return;
739 case TBL_DATA_NDHORIZ:
740 case TBL_DATA_DHORIZ:
741 tbl_fill_border(tp, BHORIZ * 2, col->width);
742 return;
743 default:
744 break;
745 }
746
747 switch (cp->pos) {
748 case TBL_CELL_LONG:
749 case TBL_CELL_CENTRE:
750 case TBL_CELL_LEFT:
751 case TBL_CELL_RIGHT:
752 tbl_literal(tp, dp, col);
753 break;
754 case TBL_CELL_NUMBER:
755 tbl_number(tp, opts, dp, col);
756 break;
757 case TBL_CELL_DOWN:
758 case TBL_CELL_SPAN:
759 break;
760 default:
761 abort();
762 }
763 }
764
765 static void
766 tbl_fill_string(struct termp *tp, const char *cp, size_t len)
767 {
768 size_t i, sz;
769
770 sz = term_strlen(tp, cp);
771 for (i = 0; i < len; i += sz)
772 term_word(tp, cp);
773 }
774
775 static void
776 tbl_fill_char(struct termp *tp, char c, size_t len)
777 {
778 char cp[2];
779
780 cp[0] = c;
781 cp[1] = '\0';
782 tbl_fill_string(tp, cp, len);
783 }
784
785 static void
786 tbl_fill_border(struct termp *tp, int c, size_t len)
787 {
788 char buf[12];
789
790 if ((c = borders_locale[c]) > 127) {
791 (void)snprintf(buf, sizeof(buf), "\\[u%04x]", c);
792 tbl_fill_string(tp, buf, len);
793 } else
794 tbl_fill_char(tp, c, len);
795 }
796
797 static void
798 tbl_direct_border(struct termp *tp, int c, size_t len)
799 {
800 size_t i, sz;
801
802 c = borders_locale[c];
803 sz = (*tp->width)(tp, c);
804 for (i = 0; i < len; i += sz) {
805 (*tp->letter)(tp, c);
806 tp->viscol += sz;
807 }
808 }
809
810 static void
811 tbl_literal(struct termp *tp, const struct tbl_dat *dp,
812 const struct roffcol *col)
813 {
814 size_t len, padl, padr, width;
815 int ic, hspans;
816
817 assert(dp->string);
818 len = term_strlen(tp, dp->string);
819 width = col->width;
820 ic = dp->layout->col;
821 hspans = dp->hspans;
822 while (hspans--)
823 width += tp->tbl.cols[++ic].width + 3;
824
825 padr = width > len ? width - len : 0;
826 padl = 0;
827
828 switch (dp->layout->pos) {
829 case TBL_CELL_LONG:
830 padl = term_len(tp, 1);
831 padr = padr > padl ? padr - padl : 0;
832 break;
833 case TBL_CELL_CENTRE:
834 if (2 > padr)
835 break;
836 padl = padr / 2;
837 padr -= padl;
838 break;
839 case TBL_CELL_RIGHT:
840 padl = padr;
841 padr = 0;
842 break;
843 default:
844 break;
845 }
846
847 tbl_fill_char(tp, ASCII_NBRSP, padl);
848 tbl_word(tp, dp);
849 tbl_fill_char(tp, ASCII_NBRSP, padr);
850 }
851
852 static void
853 tbl_number(struct termp *tp, const struct tbl_opts *opts,
854 const struct tbl_dat *dp,
855 const struct roffcol *col)
856 {
857 const char *cp, *lastdigit, *lastpoint;
858 size_t intsz, padl, totsz;
859 char buf[2];
860
861 /*
862 * Almost the same code as in tblcalc_number():
863 * First find the position of the decimal point.
864 */
865
866 assert(dp->string);
867 lastdigit = lastpoint = NULL;
868 for (cp = dp->string; cp[0] != '\0'; cp++) {
869 if (cp[0] == '\\' && cp[1] == '&') {
870 lastdigit = lastpoint = cp;
871 break;
872 } else if (cp[0] == opts->decimal &&
873 (isdigit((unsigned char)cp[1]) ||
874 (cp > dp->string && isdigit((unsigned char)cp[-1]))))
875 lastpoint = cp;
876 else if (isdigit((unsigned char)cp[0]))
877 lastdigit = cp;
878 }
879
880 /* Then measure both widths. */
881
882 padl = 0;
883 totsz = term_strlen(tp, dp->string);
884 if (lastdigit != NULL) {
885 if (lastpoint == NULL)
886 lastpoint = lastdigit + 1;
887 intsz = 0;
888 buf[1] = '\0';
889 for (cp = dp->string; cp < lastpoint; cp++) {
890 buf[0] = cp[0];
891 intsz += term_strlen(tp, buf);
892 }
893
894 /*
895 * Pad left to match the decimal position,
896 * but avoid exceeding the total column width.
897 */
898
899 if (col->decimal > intsz && col->width > totsz) {
900 padl = col->decimal - intsz;
901 if (padl + totsz > col->width)
902 padl = col->width - totsz;
903 }
904
905 /* If it is not a number, simply center the string. */
906
907 } else if (col->width > totsz)
908 padl = (col->width - totsz) / 2;
909
910 tbl_fill_char(tp, ASCII_NBRSP, padl);
911 tbl_word(tp, dp);
912
913 /* Pad right to fill the column. */
914
915 if (col->width > padl + totsz)
916 tbl_fill_char(tp, ASCII_NBRSP, col->width - padl - totsz);
917 }
918
919 static void
920 tbl_word(struct termp *tp, const struct tbl_dat *dp)
921 {
922 int prev_font;
923
924 prev_font = tp->fonti;
925 if (dp->layout->flags & TBL_CELL_BOLD)
926 term_fontpush(tp, TERMFONT_BOLD);
927 else if (dp->layout->flags & TBL_CELL_ITALIC)
928 term_fontpush(tp, TERMFONT_UNDER);
929
930 term_word(tp, dp->string);
931
932 term_fontpopq(tp, prev_font);
933 }
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