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[mandoc.git] / tbl_term.c
1 /* $Id: tbl_term.c,v 1.78 2022/04/26 14:52:05 schwarze Exp $ */
2 /*
3 * Copyright (c) 2011-2022 Ingo Schwarze <schwarze@openbsd.org>
4 * Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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 #if DEBUG_MEMORY
29 #include "mandoc_dbg.h"
30 #endif
31 #include "mandoc.h"
32 #include "tbl.h"
33 #include "out.h"
34 #include "term.h"
35
36 #define IS_HORIZ(cp) ((cp)->pos == TBL_CELL_HORIZ || \
37 (cp)->pos == TBL_CELL_DHORIZ)
38
39
40 static size_t term_tbl_len(size_t, void *);
41 static size_t term_tbl_strlen(const char *, void *);
42 static size_t term_tbl_sulen(const struct roffsu *, void *);
43 static void tbl_data(struct termp *, const struct tbl_opts *,
44 const struct tbl_cell *,
45 const struct tbl_dat *,
46 const struct roffcol *);
47 static void tbl_direct_border(struct termp *, int, size_t);
48 static void tbl_fill_border(struct termp *, int, size_t);
49 static void tbl_fill_char(struct termp *, char, size_t);
50 static void tbl_fill_string(struct termp *, const char *, size_t);
51 static void tbl_hrule(struct termp *, const struct tbl_span *,
52 const struct tbl_span *, const struct tbl_span *,
53 int);
54 static void tbl_literal(struct termp *, const struct tbl_dat *,
55 const struct roffcol *);
56 static void tbl_number(struct termp *, const struct tbl_opts *,
57 const struct tbl_dat *,
58 const struct roffcol *);
59 static void tbl_word(struct termp *, const struct tbl_dat *);
60
61
62 /*
63 * The following border-character tables are indexed
64 * by ternary (3-based) numbers, as opposed to binary or decimal.
65 * Each ternary digit describes the line width in one direction:
66 * 0 means no line, 1 single or light line, 2 double or heavy line.
67 */
68
69 /* Positional values of the four directions. */
70 #define BRIGHT 1
71 #define BDOWN 3
72 #define BLEFT (3 * 3)
73 #define BUP (3 * 3 * 3)
74 #define BHORIZ (BLEFT + BRIGHT)
75
76 /* Code points to use for each combination of widths. */
77 static const int borders_utf8[81] = {
78 0x0020, 0x2576, 0x257a, /* 000 right */
79 0x2577, 0x250c, 0x250d, /* 001 down */
80 0x257b, 0x250e, 0x250f, /* 002 */
81 0x2574, 0x2500, 0x257c, /* 010 left */
82 0x2510, 0x252c, 0x252e, /* 011 left down */
83 0x2512, 0x2530, 0x2532, /* 012 */
84 0x2578, 0x257e, 0x2501, /* 020 left */
85 0x2511, 0x252d, 0x252f, /* 021 left down */
86 0x2513, 0x2531, 0x2533, /* 022 */
87 0x2575, 0x2514, 0x2515, /* 100 up */
88 0x2502, 0x251c, 0x251d, /* 101 up down */
89 0x257d, 0x251f, 0x2522, /* 102 */
90 0x2518, 0x2534, 0x2536, /* 110 up left */
91 0x2524, 0x253c, 0x253e, /* 111 all */
92 0x2527, 0x2541, 0x2546, /* 112 */
93 0x2519, 0x2535, 0x2537, /* 120 up left */
94 0x2525, 0x253d, 0x253f, /* 121 all */
95 0x252a, 0x2545, 0x2548, /* 122 */
96 0x2579, 0x2516, 0x2517, /* 200 up */
97 0x257f, 0x251e, 0x2521, /* 201 up down */
98 0x2503, 0x2520, 0x2523, /* 202 */
99 0x251a, 0x2538, 0x253a, /* 210 up left */
100 0x2526, 0x2540, 0x2544, /* 211 all */
101 0x2528, 0x2542, 0x254a, /* 212 */
102 0x251b, 0x2539, 0x253b, /* 220 up left */
103 0x2529, 0x2543, 0x2547, /* 221 all */
104 0x252b, 0x2549, 0x254b, /* 222 */
105 };
106
107 /* ASCII approximations for these code points, compatible with groff. */
108 static const int borders_ascii[81] = {
109 ' ', '-', '=', /* 000 right */
110 '|', '+', '+', /* 001 down */
111 '|', '+', '+', /* 002 */
112 '-', '-', '=', /* 010 left */
113 '+', '+', '+', /* 011 left down */
114 '+', '+', '+', /* 012 */
115 '=', '=', '=', /* 020 left */
116 '+', '+', '+', /* 021 left down */
117 '+', '+', '+', /* 022 */
118 '|', '+', '+', /* 100 up */
119 '|', '+', '+', /* 101 up down */
120 '|', '+', '+', /* 102 */
121 '+', '+', '+', /* 110 up left */
122 '+', '+', '+', /* 111 all */
123 '+', '+', '+', /* 112 */
124 '+', '+', '+', /* 120 up left */
125 '+', '+', '+', /* 121 all */
126 '+', '+', '+', /* 122 */
127 '|', '+', '+', /* 200 up */
128 '|', '+', '+', /* 201 up down */
129 '|', '+', '+', /* 202 */
130 '+', '+', '+', /* 210 up left */
131 '+', '+', '+', /* 211 all */
132 '+', '+', '+', /* 212 */
133 '+', '+', '+', /* 220 up left */
134 '+', '+', '+', /* 221 all */
135 '+', '+', '+', /* 222 */
136 };
137
138 /* Either of the above according to the selected output encoding. */
139 static const int *borders_locale;
140
141
142 static size_t
143 term_tbl_sulen(const struct roffsu *su, void *arg)
144 {
145 int i;
146
147 i = term_hen((const struct termp *)arg, su);
148 return i > 0 ? i : 0;
149 }
150
151 static size_t
152 term_tbl_strlen(const char *p, void *arg)
153 {
154 return term_strlen((const struct termp *)arg, p);
155 }
156
157 static size_t
158 term_tbl_len(size_t sz, void *arg)
159 {
160 return term_len((const struct termp *)arg, sz);
161 }
162
163
164 void
165 term_tbl(struct termp *tp, const struct tbl_span *sp)
166 {
167 const struct tbl_cell *cp, *cpn, *cpp, *cps;
168 const struct tbl_dat *dp;
169 static size_t offset;
170 size_t save_offset;
171 size_t coloff, tsz;
172 int hspans, ic, more;
173 int dvert, fc, horiz, lhori, rhori, uvert;
174
175 /* Inhibit printing of spaces: we do padding ourselves. */
176
177 tp->flags |= TERMP_NOSPACE | TERMP_NONOSPACE;
178 save_offset = tp->tcol->offset;
179
180 /*
181 * The first time we're invoked for a given table block,
182 * calculate the table widths and decimal positions.
183 */
184
185 if (tp->tbl.cols == NULL) {
186 borders_locale = tp->enc == TERMENC_UTF8 ?
187 borders_utf8 : borders_ascii;
188
189 tp->tbl.len = term_tbl_len;
190 tp->tbl.slen = term_tbl_strlen;
191 tp->tbl.sulen = term_tbl_sulen;
192 tp->tbl.arg = tp;
193
194 tblcalc(&tp->tbl, sp, tp->tcol->offset, tp->tcol->rmargin);
195
196 /* Center the table as a whole. */
197
198 offset = tp->tcol->offset;
199 if (sp->opts->opts & TBL_OPT_CENTRE) {
200 tsz = sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX)
201 ? 2 : !!sp->opts->lvert + !!sp->opts->rvert;
202 for (ic = 0; ic + 1 < sp->opts->cols; ic++)
203 tsz += tp->tbl.cols[ic].width +
204 tp->tbl.cols[ic].spacing;
205 if (sp->opts->cols)
206 tsz += tp->tbl.cols[sp->opts->cols - 1].width;
207 if (offset + tsz > tp->tcol->rmargin)
208 tsz -= 1;
209 offset = offset + tp->tcol->rmargin > tsz ?
210 (offset + tp->tcol->rmargin - tsz) / 2 : 0;
211 tp->tcol->offset = offset;
212 }
213
214 /* Horizontal frame at the start of boxed tables. */
215
216 if (tp->enc == TERMENC_ASCII &&
217 sp->opts->opts & TBL_OPT_DBOX)
218 tbl_hrule(tp, NULL, sp, sp, TBL_OPT_DBOX);
219 if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX))
220 tbl_hrule(tp, NULL, sp, sp, TBL_OPT_BOX);
221 }
222
223 /* Set up the columns. */
224
225 tp->flags |= TERMP_MULTICOL;
226 tp->tcol->offset = offset;
227 horiz = 0;
228 switch (sp->pos) {
229 case TBL_SPAN_HORIZ:
230 case TBL_SPAN_DHORIZ:
231 horiz = 1;
232 term_setcol(tp, 1);
233 break;
234 case TBL_SPAN_DATA:
235 term_setcol(tp, sp->opts->cols + 2);
236 coloff = tp->tcol->offset;
237
238 /* Set up a column for a left vertical frame. */
239
240 if (sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ||
241 sp->opts->lvert)
242 coloff++;
243 tp->tcol->rmargin = coloff;
244
245 /* Set up the data columns. */
246
247 dp = sp->first;
248 hspans = 0;
249 for (ic = 0; ic < sp->opts->cols; ic++) {
250 if (hspans == 0) {
251 tp->tcol++;
252 tp->tcol->offset = coloff;
253 }
254 coloff += tp->tbl.cols[ic].width;
255 tp->tcol->rmargin = coloff;
256 if (ic + 1 < sp->opts->cols)
257 coloff += tp->tbl.cols[ic].spacing;
258 if (hspans) {
259 hspans--;
260 continue;
261 }
262 if (dp != NULL &&
263 (ic || sp->layout->first->pos != TBL_CELL_SPAN)) {
264 hspans = dp->hspans;
265 dp = dp->next;
266 }
267 }
268
269 /* Set up a column for a right vertical frame. */
270
271 tp->tcol++;
272 tp->tcol->offset = coloff + 1;
273 tp->tcol->rmargin = tp->maxrmargin;
274
275 /* Spans may have reduced the number of columns. */
276
277 tp->lasttcol = tp->tcol - tp->tcols;
278
279 /* Fill the buffers for all data columns. */
280
281 tp->tcol = tp->tcols;
282 cp = cpn = sp->layout->first;
283 dp = sp->first;
284 hspans = 0;
285 for (ic = 0; ic < sp->opts->cols; ic++) {
286 if (cpn != NULL) {
287 cp = cpn;
288 cpn = cpn->next;
289 }
290 if (hspans) {
291 hspans--;
292 continue;
293 }
294 tp->tcol++;
295 tp->col = 0;
296 tp->flags &= ~(TERMP_BACKAFTER | TERMP_BACKBEFORE);
297 tbl_data(tp, sp->opts, cp, dp, tp->tbl.cols + ic);
298 if (dp != NULL &&
299 (ic || sp->layout->first->pos != TBL_CELL_SPAN)) {
300 hspans = dp->hspans;
301 dp = dp->next;
302 }
303 }
304 break;
305 }
306
307 do {
308 /* Print the vertical frame at the start of each row. */
309
310 tp->tcol = tp->tcols;
311 uvert = dvert = sp->opts->opts & TBL_OPT_DBOX ? 2 :
312 sp->opts->opts & TBL_OPT_BOX ? 1 : 0;
313 if (sp->pos == TBL_SPAN_DATA && uvert < sp->layout->vert)
314 uvert = dvert = sp->layout->vert;
315 if (sp->next != NULL && sp->next->pos == TBL_SPAN_DATA &&
316 dvert < sp->next->layout->vert)
317 dvert = sp->next->layout->vert;
318 if (sp->prev != NULL && uvert < sp->prev->layout->vert &&
319 (horiz || (IS_HORIZ(sp->layout->first) &&
320 !IS_HORIZ(sp->prev->layout->first))))
321 uvert = sp->prev->layout->vert;
322 rhori = sp->pos == TBL_SPAN_DHORIZ ||
323 (sp->first != NULL && sp->first->pos == TBL_DATA_DHORIZ) ||
324 sp->layout->first->pos == TBL_CELL_DHORIZ ? 2 :
325 sp->pos == TBL_SPAN_HORIZ ||
326 (sp->first != NULL && sp->first->pos == TBL_DATA_HORIZ) ||
327 sp->layout->first->pos == TBL_CELL_HORIZ ? 1 : 0;
328 fc = BUP * uvert + BDOWN * dvert + BRIGHT * rhori;
329 if (uvert > 0 || dvert > 0 || (horiz && sp->opts->lvert)) {
330 (*tp->advance)(tp, tp->tcols->offset);
331 tp->viscol = tp->tcol->offset;
332 tbl_direct_border(tp, fc, 1);
333 }
334
335 /* Print the data cells. */
336
337 more = 0;
338 if (horiz)
339 tbl_hrule(tp, sp->prev, sp, sp->next, 0);
340 else {
341 cp = sp->layout->first;
342 cpn = sp->next == NULL ? NULL :
343 sp->next->layout->first;
344 cpp = sp->prev == NULL ? NULL :
345 sp->prev->layout->first;
346 dp = sp->first;
347 hspans = 0;
348 for (ic = 0; ic < sp->opts->cols; ic++) {
349
350 /*
351 * Figure out whether to print a
352 * vertical line after this cell
353 * and advance to next layout cell.
354 */
355
356 uvert = dvert = fc = 0;
357 if (cp != NULL) {
358 cps = cp;
359 while (cps->next != NULL &&
360 cps->next->pos == TBL_CELL_SPAN)
361 cps = cps->next;
362 if (sp->pos == TBL_SPAN_DATA)
363 uvert = dvert = cps->vert;
364 switch (cp->pos) {
365 case TBL_CELL_HORIZ:
366 fc = BHORIZ;
367 break;
368 case TBL_CELL_DHORIZ:
369 fc = BHORIZ * 2;
370 break;
371 default:
372 break;
373 }
374 }
375 if (cpp != NULL) {
376 if (uvert < cpp->vert &&
377 cp != NULL &&
378 ((IS_HORIZ(cp) &&
379 !IS_HORIZ(cpp)) ||
380 (cp->next != NULL &&
381 cpp->next != NULL &&
382 IS_HORIZ(cp->next) &&
383 !IS_HORIZ(cpp->next))))
384 uvert = cpp->vert;
385 cpp = cpp->next;
386 }
387 if (sp->opts->opts & TBL_OPT_ALLBOX) {
388 if (uvert == 0)
389 uvert = 1;
390 if (dvert == 0)
391 dvert = 1;
392 }
393 if (cpn != NULL) {
394 if (dvert == 0 ||
395 (dvert < cpn->vert &&
396 tp->enc == TERMENC_UTF8))
397 dvert = cpn->vert;
398 cpn = cpn->next;
399 }
400
401 lhori = (cp != NULL &&
402 cp->pos == TBL_CELL_DHORIZ) ||
403 (dp != NULL &&
404 dp->pos == TBL_DATA_DHORIZ) ? 2 :
405 (cp != NULL &&
406 cp->pos == TBL_CELL_HORIZ) ||
407 (dp != NULL &&
408 dp->pos == TBL_DATA_HORIZ) ? 1 : 0;
409
410 /*
411 * Skip later cells in a span,
412 * figure out whether to start a span,
413 * and advance to next data cell.
414 */
415
416 if (hspans) {
417 hspans--;
418 cp = cp->next;
419 continue;
420 }
421 if (dp != NULL && (ic ||
422 sp->layout->first->pos != TBL_CELL_SPAN)) {
423 hspans = dp->hspans;
424 dp = dp->next;
425 }
426
427 /*
428 * Print one line of text in the cell
429 * and remember whether there is more.
430 */
431
432 tp->tcol++;
433 if (tp->tcol->col < tp->tcol->lastcol)
434 term_flushln(tp);
435 if (tp->tcol->col < tp->tcol->lastcol)
436 more = 1;
437
438 /*
439 * Vertical frames between data cells,
440 * but not after the last column.
441 */
442
443 if (fc == 0 &&
444 ((uvert == 0 && dvert == 0 &&
445 cp != NULL && (cp->next == NULL ||
446 !IS_HORIZ(cp->next))) ||
447 tp->tcol + 1 ==
448 tp->tcols + tp->lasttcol)) {
449 if (cp != NULL)
450 cp = cp->next;
451 continue;
452 }
453
454 if (tp->viscol < tp->tcol->rmargin) {
455 (*tp->advance)(tp, tp->tcol->rmargin
456 - tp->viscol);
457 tp->viscol = tp->tcol->rmargin;
458 }
459 while (tp->viscol < tp->tcol->rmargin +
460 tp->tbl.cols[ic].spacing / 2)
461 tbl_direct_border(tp,
462 BHORIZ * lhori, 1);
463
464 if (tp->tcol + 1 == tp->tcols + tp->lasttcol)
465 continue;
466
467 if (cp != NULL)
468 cp = cp->next;
469
470 rhori = (cp != NULL &&
471 cp->pos == TBL_CELL_DHORIZ) ||
472 (dp != NULL &&
473 dp->pos == TBL_DATA_DHORIZ) ? 2 :
474 (cp != NULL &&
475 cp->pos == TBL_CELL_HORIZ) ||
476 (dp != NULL &&
477 dp->pos == TBL_DATA_HORIZ) ? 1 : 0;
478
479 if (tp->tbl.cols[ic].spacing)
480 tbl_direct_border(tp,
481 BLEFT * lhori + BRIGHT * rhori +
482 BUP * uvert + BDOWN * dvert, 1);
483
484 if (tp->enc == TERMENC_UTF8)
485 uvert = dvert = 0;
486
487 if (tp->tbl.cols[ic].spacing > 2 &&
488 (uvert > 1 || dvert > 1 || rhori))
489 tbl_direct_border(tp,
490 BHORIZ * rhori +
491 BUP * (uvert > 1) +
492 BDOWN * (dvert > 1), 1);
493 }
494 }
495
496 /* Print the vertical frame at the end of each row. */
497
498 uvert = dvert = sp->opts->opts & TBL_OPT_DBOX ? 2 :
499 sp->opts->opts & TBL_OPT_BOX ? 1 : 0;
500 if (sp->pos == TBL_SPAN_DATA &&
501 uvert < sp->layout->last->vert &&
502 sp->layout->last->col + 1 == sp->opts->cols)
503 uvert = dvert = sp->layout->last->vert;
504 if (sp->next != NULL &&
505 dvert < sp->next->layout->last->vert &&
506 sp->next->layout->last->col + 1 == sp->opts->cols)
507 dvert = sp->next->layout->last->vert;
508 if (sp->prev != NULL &&
509 uvert < sp->prev->layout->last->vert &&
510 sp->prev->layout->last->col + 1 == sp->opts->cols &&
511 (horiz || (IS_HORIZ(sp->layout->last) &&
512 !IS_HORIZ(sp->prev->layout->last))))
513 uvert = sp->prev->layout->last->vert;
514 lhori = sp->pos == TBL_SPAN_DHORIZ ||
515 (sp->last != NULL &&
516 sp->last->pos == TBL_DATA_DHORIZ &&
517 sp->last->layout->col + 1 == sp->opts->cols) ||
518 (sp->layout->last->pos == TBL_CELL_DHORIZ &&
519 sp->layout->last->col + 1 == sp->opts->cols) ? 2 :
520 sp->pos == TBL_SPAN_HORIZ ||
521 (sp->last != NULL &&
522 sp->last->pos == TBL_DATA_HORIZ &&
523 sp->last->layout->col + 1 == sp->opts->cols) ||
524 (sp->layout->last->pos == TBL_CELL_HORIZ &&
525 sp->layout->last->col + 1 == sp->opts->cols) ? 1 : 0;
526 fc = BUP * uvert + BDOWN * dvert + BLEFT * lhori;
527 if (uvert > 0 || dvert > 0 || (horiz && sp->opts->rvert)) {
528 if (horiz == 0 && (IS_HORIZ(sp->layout->last) == 0 ||
529 sp->layout->last->col + 1 < sp->opts->cols)) {
530 tp->tcol++;
531 do {
532 tbl_direct_border(tp,
533 BHORIZ * lhori, 1);
534 } while (tp->viscol < tp->tcol->offset);
535 }
536 tbl_direct_border(tp, fc, 1);
537 }
538 (*tp->endline)(tp);
539 tp->viscol = 0;
540 } while (more);
541
542 /*
543 * Clean up after this row. If it is the last line
544 * of the table, print the box line and clean up
545 * column data; otherwise, print the allbox line.
546 */
547
548 term_setcol(tp, 1);
549 tp->flags &= ~TERMP_MULTICOL;
550 tp->tcol->rmargin = tp->maxrmargin;
551 if (sp->next == NULL) {
552 if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX)) {
553 tbl_hrule(tp, sp, sp, NULL, TBL_OPT_BOX);
554 tp->skipvsp = 1;
555 }
556 if (tp->enc == TERMENC_ASCII &&
557 sp->opts->opts & TBL_OPT_DBOX) {
558 tbl_hrule(tp, sp, sp, NULL, TBL_OPT_DBOX);
559 tp->skipvsp = 2;
560 }
561 assert(tp->tbl.cols);
562 free(tp->tbl.cols);
563 tp->tbl.cols = NULL;
564 } else if (horiz == 0 && sp->opts->opts & TBL_OPT_ALLBOX &&
565 (sp->next == NULL || sp->next->pos == TBL_SPAN_DATA ||
566 sp->next->next != NULL))
567 tbl_hrule(tp, sp, sp, sp->next, TBL_OPT_ALLBOX);
568
569 tp->tcol->offset = save_offset;
570 tp->flags &= ~TERMP_NONOSPACE;
571 }
572
573 static void
574 tbl_hrule(struct termp *tp, const struct tbl_span *spp,
575 const struct tbl_span *sp, const struct tbl_span *spn, int flags)
576 {
577 const struct tbl_cell *cpp; /* Layout cell above this line. */
578 const struct tbl_cell *cp; /* Layout cell in this line. */
579 const struct tbl_cell *cpn; /* Layout cell below this line. */
580 const struct tbl_dat *dpn; /* Data cell below this line. */
581 const struct roffcol *col; /* Contains width and spacing. */
582 int opts; /* For the table as a whole. */
583 int bw; /* Box line width. */
584 int hw; /* Horizontal line width. */
585 int lw, rw; /* Left and right line widths. */
586 int uw, dw; /* Vertical line widths. */
587
588 cpp = spp == NULL ? NULL : spp->layout->first;
589 cp = sp == NULL ? NULL : sp->layout->first;
590 cpn = spn == NULL ? NULL : spn->layout->first;
591 dpn = NULL;
592 if (spn != NULL) {
593 if (spn->pos == TBL_SPAN_DATA)
594 dpn = spn->first;
595 else if (spn->next != NULL)
596 dpn = spn->next->first;
597 }
598 opts = sp->opts->opts;
599 bw = opts & TBL_OPT_DBOX ? (tp->enc == TERMENC_UTF8 ? 2 : 1) :
600 opts & (TBL_OPT_BOX | TBL_OPT_ALLBOX) ? 1 : 0;
601 hw = flags == TBL_OPT_DBOX || flags == TBL_OPT_BOX ? bw :
602 sp->pos == TBL_SPAN_DHORIZ ? 2 : 1;
603
604 /* Print the left end of the line. */
605
606 if (tp->viscol == 0) {
607 (*tp->advance)(tp, tp->tcols->offset);
608 tp->viscol = tp->tcols->offset;
609 }
610 if (flags != 0)
611 tbl_direct_border(tp,
612 (spp == NULL ? 0 : BUP * bw) +
613 (spn == NULL ? 0 : BDOWN * bw) +
614 (spp == NULL || cpn == NULL ||
615 cpn->pos != TBL_CELL_DOWN ? BRIGHT * hw : 0), 1);
616
617 col = tp->tbl.cols;
618 for (;;) {
619 if (cp == NULL)
620 col++;
621 else
622 col = tp->tbl.cols + cp->col;
623
624 /* Print the horizontal line inside this column. */
625
626 lw = cpp == NULL || cpn == NULL ||
627 (cpn->pos != TBL_CELL_DOWN &&
628 (dpn == NULL || dpn->string == NULL ||
629 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 } else if (spp != NULL && opts & TBL_OPT_ALLBOX)
649 uw = 1;
650 if (cp != NULL)
651 cp = cp->next;
652 if (cpn != NULL) {
653 if (flags != TBL_OPT_DBOX) {
654 dw = cpn->vert;
655 if (dw == 0 && opts & TBL_OPT_ALLBOX)
656 dw = 1;
657 }
658 cpn = cpn->next;
659 while (dpn != NULL && dpn->layout != cpn)
660 dpn = dpn->next;
661 } else if (spn != NULL && opts & TBL_OPT_ALLBOX)
662 dw = 1;
663 if (col + 1 == tp->tbl.cols + sp->opts->cols)
664 break;
665
666 /* Vertical lines do not cross spanned cells. */
667
668 if (cpp != NULL && cpp->pos == TBL_CELL_SPAN)
669 uw = 0;
670 if (cpn != NULL && cpn->pos == TBL_CELL_SPAN)
671 dw = 0;
672
673 /* The horizontal line inside the next column. */
674
675 rw = cpp == NULL || cpn == NULL ||
676 (cpn->pos != TBL_CELL_DOWN &&
677 (dpn == NULL || dpn->string == NULL ||
678 strcmp(dpn->string, "\\^") != 0))
679 ? hw : 0;
680
681 /* The line crossing at the end of this column. */
682
683 if (col->spacing)
684 tbl_direct_border(tp, BLEFT * lw +
685 BRIGHT * rw + BUP * uw + BDOWN * dw, 1);
686
687 /*
688 * In ASCII output, a crossing may print two characters.
689 */
690
691 if (tp->enc != TERMENC_ASCII || (uw < 2 && dw < 2))
692 uw = dw = 0;
693 if (col->spacing > 2)
694 tbl_direct_border(tp,
695 BHORIZ * rw + BUP * uw + BDOWN * dw, 1);
696
697 /* Padding before the start of the next column. */
698
699 if (col->spacing > 4)
700 tbl_direct_border(tp,
701 BHORIZ * rw, (col->spacing - 3) / 2);
702 }
703
704 /* Print the right end of the line. */
705
706 if (flags != 0) {
707 tbl_direct_border(tp,
708 (spp == NULL ? 0 : BUP * bw) +
709 (spn == NULL ? 0 : BDOWN * bw) +
710 (spp == NULL || spn == NULL ||
711 spn->layout->last->pos != TBL_CELL_DOWN ?
712 BLEFT * hw : 0), 1);
713 (*tp->endline)(tp);
714 tp->viscol = 0;
715 }
716 }
717
718 static void
719 tbl_data(struct termp *tp, const struct tbl_opts *opts,
720 const struct tbl_cell *cp, const struct tbl_dat *dp,
721 const struct roffcol *col)
722 {
723 switch (cp->pos) {
724 case TBL_CELL_HORIZ:
725 tbl_fill_border(tp, BHORIZ, col->width);
726 return;
727 case TBL_CELL_DHORIZ:
728 tbl_fill_border(tp, BHORIZ * 2, col->width);
729 return;
730 default:
731 break;
732 }
733
734 if (dp == NULL)
735 return;
736
737 switch (dp->pos) {
738 case TBL_DATA_NONE:
739 return;
740 case TBL_DATA_HORIZ:
741 case TBL_DATA_NHORIZ:
742 tbl_fill_border(tp, BHORIZ, col->width);
743 return;
744 case TBL_DATA_NDHORIZ:
745 case TBL_DATA_DHORIZ:
746 tbl_fill_border(tp, BHORIZ * 2, col->width);
747 return;
748 default:
749 break;
750 }
751
752 switch (cp->pos) {
753 case TBL_CELL_LONG:
754 case TBL_CELL_CENTRE:
755 case TBL_CELL_LEFT:
756 case TBL_CELL_RIGHT:
757 tbl_literal(tp, dp, col);
758 break;
759 case TBL_CELL_NUMBER:
760 tbl_number(tp, opts, dp, col);
761 break;
762 case TBL_CELL_DOWN:
763 case TBL_CELL_SPAN:
764 break;
765 default:
766 abort();
767 }
768 }
769
770 static void
771 tbl_fill_string(struct termp *tp, const char *cp, size_t len)
772 {
773 size_t i, sz;
774
775 sz = term_strlen(tp, cp);
776 for (i = 0; i < len; i += sz)
777 term_word(tp, cp);
778 }
779
780 static void
781 tbl_fill_char(struct termp *tp, char c, size_t len)
782 {
783 char cp[2];
784
785 cp[0] = c;
786 cp[1] = '\0';
787 tbl_fill_string(tp, cp, len);
788 }
789
790 static void
791 tbl_fill_border(struct termp *tp, int c, size_t len)
792 {
793 char buf[12];
794
795 if ((c = borders_locale[c]) > 127) {
796 (void)snprintf(buf, sizeof(buf), "\\[u%04x]", c);
797 tbl_fill_string(tp, buf, len);
798 } else
799 tbl_fill_char(tp, c, len);
800 }
801
802 static void
803 tbl_direct_border(struct termp *tp, int c, size_t len)
804 {
805 size_t i, sz;
806
807 c = borders_locale[c];
808 sz = (*tp->width)(tp, c);
809 for (i = 0; i < len; i += sz) {
810 (*tp->letter)(tp, c);
811 tp->viscol += sz;
812 }
813 }
814
815 static void
816 tbl_literal(struct termp *tp, const struct tbl_dat *dp,
817 const struct roffcol *col)
818 {
819 size_t len, padl, padr, width;
820 int ic, hspans;
821
822 assert(dp->string);
823 len = term_strlen(tp, dp->string);
824 width = col->width;
825 ic = dp->layout->col;
826 hspans = dp->hspans;
827 while (hspans--) {
828 width += tp->tbl.cols[ic].spacing;
829 ic++;
830 width += tp->tbl.cols[ic].width;
831 }
832
833 padr = width > len ? width - len : 0;
834 padl = 0;
835
836 switch (dp->layout->pos) {
837 case TBL_CELL_LONG:
838 padl = term_len(tp, 1);
839 padr = padr > padl ? padr - padl : 0;
840 break;
841 case TBL_CELL_CENTRE:
842 if (2 > padr)
843 break;
844 padl = padr / 2;
845 padr -= padl;
846 break;
847 case TBL_CELL_RIGHT:
848 padl = padr;
849 padr = 0;
850 break;
851 default:
852 break;
853 }
854
855 tbl_fill_char(tp, ASCII_NBRSP, padl);
856 tbl_word(tp, dp);
857 tbl_fill_char(tp, ASCII_NBRSP, padr);
858 }
859
860 static void
861 tbl_number(struct termp *tp, const struct tbl_opts *opts,
862 const struct tbl_dat *dp,
863 const struct roffcol *col)
864 {
865 const char *cp, *lastdigit, *lastpoint;
866 size_t intsz, padl, totsz;
867 char buf[2];
868
869 /*
870 * Almost the same code as in tblcalc_number():
871 * First find the position of the decimal point.
872 */
873
874 assert(dp->string);
875 lastdigit = lastpoint = NULL;
876 for (cp = dp->string; cp[0] != '\0'; cp++) {
877 if (cp[0] == '\\' && cp[1] == '&') {
878 lastdigit = lastpoint = cp;
879 break;
880 } else if (cp[0] == opts->decimal &&
881 (isdigit((unsigned char)cp[1]) ||
882 (cp > dp->string && isdigit((unsigned char)cp[-1]))))
883 lastpoint = cp;
884 else if (isdigit((unsigned char)cp[0]))
885 lastdigit = cp;
886 }
887
888 /* Then measure both widths. */
889
890 padl = 0;
891 totsz = term_strlen(tp, dp->string);
892 if (lastdigit != NULL) {
893 if (lastpoint == NULL)
894 lastpoint = lastdigit + 1;
895 intsz = 0;
896 buf[1] = '\0';
897 for (cp = dp->string; cp < lastpoint; cp++) {
898 buf[0] = cp[0];
899 intsz += term_strlen(tp, buf);
900 }
901
902 /*
903 * Pad left to match the decimal position,
904 * but avoid exceeding the total column width.
905 */
906
907 if (col->decimal > intsz && col->width > totsz) {
908 padl = col->decimal - intsz;
909 if (padl + totsz > col->width)
910 padl = col->width - totsz;
911 }
912
913 /* If it is not a number, simply center the string. */
914
915 } else if (col->width > totsz)
916 padl = (col->width - totsz) / 2;
917
918 tbl_fill_char(tp, ASCII_NBRSP, padl);
919 tbl_word(tp, dp);
920
921 /* Pad right to fill the column. */
922
923 if (col->width > padl + totsz)
924 tbl_fill_char(tp, ASCII_NBRSP, col->width - padl - totsz);
925 }
926
927 static void
928 tbl_word(struct termp *tp, const struct tbl_dat *dp)
929 {
930 int prev_font;
931
932 prev_font = tp->fonti;
933 switch (dp->layout->font) {
934 case ESCAPE_FONTBI:
935 term_fontpush(tp, TERMFONT_BI);
936 break;
937 case ESCAPE_FONTBOLD:
938 case ESCAPE_FONTCB:
939 term_fontpush(tp, TERMFONT_BOLD);
940 break;
941 case ESCAPE_FONTITALIC:
942 case ESCAPE_FONTCI:
943 term_fontpush(tp, TERMFONT_UNDER);
944 break;
945 case ESCAPE_FONTROMAN:
946 case ESCAPE_FONTCR:
947 break;
948 default:
949 abort();
950 }
951
952 term_word(tp, dp->string);
953
954 term_fontpopq(tp, prev_font);
955 }
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