1 /* $Id: tbl_term.c,v 1.79 2022/08/28 10:58:31 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
term_tbl_sulen(const struct roffsu * su,void * arg)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
term_tbl_strlen(const char * p,void * arg)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
term_tbl_len(size_t sz,void * arg)158 term_tbl_len(size_t sz, void *arg)
159 {
160 return term_len((const struct termp *)arg, sz);
161 }
162
163
164 void
term_tbl(struct termp * tp,const struct tbl_span * sp)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 if (tp->enc == TERMENC_ASCII &&
555 sp->opts->opts & TBL_OPT_DBOX)
556 tbl_hrule(tp, sp, sp, NULL, TBL_OPT_DBOX);
557 assert(tp->tbl.cols);
558 free(tp->tbl.cols);
559 tp->tbl.cols = NULL;
560 } else if (horiz == 0 && sp->opts->opts & TBL_OPT_ALLBOX &&
561 (sp->next == NULL || sp->next->pos == TBL_SPAN_DATA ||
562 sp->next->next != NULL))
563 tbl_hrule(tp, sp, sp, sp->next, TBL_OPT_ALLBOX);
564
565 tp->tcol->offset = save_offset;
566 tp->flags &= ~TERMP_NONOSPACE;
567 }
568
569 static void
tbl_hrule(struct termp * tp,const struct tbl_span * spp,const struct tbl_span * sp,const struct tbl_span * spn,int flags)570 tbl_hrule(struct termp *tp, const struct tbl_span *spp,
571 const struct tbl_span *sp, const struct tbl_span *spn, int flags)
572 {
573 const struct tbl_cell *cpp; /* Layout cell above this line. */
574 const struct tbl_cell *cp; /* Layout cell in this line. */
575 const struct tbl_cell *cpn; /* Layout cell below this line. */
576 const struct tbl_dat *dpn; /* Data cell below this line. */
577 const struct roffcol *col; /* Contains width and spacing. */
578 int opts; /* For the table as a whole. */
579 int bw; /* Box line width. */
580 int hw; /* Horizontal line width. */
581 int lw, rw; /* Left and right line widths. */
582 int uw, dw; /* Vertical line widths. */
583
584 cpp = spp == NULL ? NULL : spp->layout->first;
585 cp = sp == NULL ? NULL : sp->layout->first;
586 cpn = spn == NULL ? NULL : spn->layout->first;
587 dpn = NULL;
588 if (spn != NULL) {
589 if (spn->pos == TBL_SPAN_DATA)
590 dpn = spn->first;
591 else if (spn->next != NULL)
592 dpn = spn->next->first;
593 }
594 opts = sp->opts->opts;
595 bw = opts & TBL_OPT_DBOX ? (tp->enc == TERMENC_UTF8 ? 2 : 1) :
596 opts & (TBL_OPT_BOX | TBL_OPT_ALLBOX) ? 1 : 0;
597 hw = flags == TBL_OPT_DBOX || flags == TBL_OPT_BOX ? bw :
598 sp->pos == TBL_SPAN_DHORIZ ? 2 : 1;
599
600 /* Print the left end of the line. */
601
602 if (tp->viscol == 0) {
603 (*tp->advance)(tp, tp->tcols->offset);
604 tp->viscol = tp->tcols->offset;
605 }
606 if (flags != 0)
607 tbl_direct_border(tp,
608 (spp == NULL ? 0 : BUP * bw) +
609 (spn == NULL ? 0 : BDOWN * bw) +
610 (spp == NULL || cpn == NULL ||
611 cpn->pos != TBL_CELL_DOWN ? BRIGHT * hw : 0), 1);
612
613 col = tp->tbl.cols;
614 for (;;) {
615 if (cp == NULL)
616 col++;
617 else
618 col = tp->tbl.cols + cp->col;
619
620 /* Print the horizontal line inside this column. */
621
622 lw = cpp == NULL || cpn == NULL ||
623 (cpn->pos != TBL_CELL_DOWN &&
624 (dpn == NULL || dpn->string == NULL ||
625 strcmp(dpn->string, "\\^") != 0))
626 ? hw : 0;
627 tbl_direct_border(tp, BHORIZ * lw,
628 col->width + col->spacing / 2);
629
630 /*
631 * Figure out whether a vertical line is crossing
632 * at the end of this column,
633 * and advance to the next column.
634 */
635
636 uw = dw = 0;
637 if (cpp != NULL) {
638 if (flags != TBL_OPT_DBOX) {
639 uw = cpp->vert;
640 if (uw == 0 && opts & TBL_OPT_ALLBOX)
641 uw = 1;
642 }
643 cpp = cpp->next;
644 } else if (spp != NULL && opts & TBL_OPT_ALLBOX)
645 uw = 1;
646 if (cp != NULL)
647 cp = cp->next;
648 if (cpn != NULL) {
649 if (flags != TBL_OPT_DBOX) {
650 dw = cpn->vert;
651 if (dw == 0 && opts & TBL_OPT_ALLBOX)
652 dw = 1;
653 }
654 cpn = cpn->next;
655 while (dpn != NULL && dpn->layout != cpn)
656 dpn = dpn->next;
657 } else if (spn != NULL && opts & TBL_OPT_ALLBOX)
658 dw = 1;
659 if (col + 1 == tp->tbl.cols + sp->opts->cols)
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 || dpn->string == NULL ||
674 strcmp(dpn->string, "\\^") != 0))
675 ? hw : 0;
676
677 /* The line crossing at the end of this column. */
678
679 if (col->spacing)
680 tbl_direct_border(tp, BLEFT * lw +
681 BRIGHT * rw + BUP * uw + BDOWN * dw, 1);
682
683 /*
684 * In ASCII output, a crossing may print two characters.
685 */
686
687 if (tp->enc != TERMENC_ASCII || (uw < 2 && dw < 2))
688 uw = dw = 0;
689 if (col->spacing > 2)
690 tbl_direct_border(tp,
691 BHORIZ * rw + BUP * uw + BDOWN * dw, 1);
692
693 /* Padding before the start of the next column. */
694
695 if (col->spacing > 4)
696 tbl_direct_border(tp,
697 BHORIZ * rw, (col->spacing - 3) / 2);
698 }
699
700 /* Print the right end of the line. */
701
702 if (flags != 0) {
703 tbl_direct_border(tp,
704 (spp == NULL ? 0 : BUP * bw) +
705 (spn == NULL ? 0 : BDOWN * bw) +
706 (spp == NULL || spn == NULL ||
707 spn->layout->last->pos != TBL_CELL_DOWN ?
708 BLEFT * hw : 0), 1);
709 (*tp->endline)(tp);
710 tp->viscol = 0;
711 }
712 }
713
714 static void
tbl_data(struct termp * tp,const struct tbl_opts * opts,const struct tbl_cell * cp,const struct tbl_dat * dp,const struct roffcol * col)715 tbl_data(struct termp *tp, const struct tbl_opts *opts,
716 const struct tbl_cell *cp, const struct tbl_dat *dp,
717 const struct roffcol *col)
718 {
719 switch (cp->pos) {
720 case TBL_CELL_HORIZ:
721 tbl_fill_border(tp, BHORIZ, col->width);
722 return;
723 case TBL_CELL_DHORIZ:
724 tbl_fill_border(tp, BHORIZ * 2, col->width);
725 return;
726 default:
727 break;
728 }
729
730 if (dp == NULL)
731 return;
732
733 switch (dp->pos) {
734 case TBL_DATA_NONE:
735 return;
736 case TBL_DATA_HORIZ:
737 case TBL_DATA_NHORIZ:
738 tbl_fill_border(tp, BHORIZ, col->width);
739 return;
740 case TBL_DATA_NDHORIZ:
741 case TBL_DATA_DHORIZ:
742 tbl_fill_border(tp, BHORIZ * 2, col->width);
743 return;
744 default:
745 break;
746 }
747
748 switch (cp->pos) {
749 case TBL_CELL_LONG:
750 case TBL_CELL_CENTRE:
751 case TBL_CELL_LEFT:
752 case TBL_CELL_RIGHT:
753 tbl_literal(tp, dp, col);
754 break;
755 case TBL_CELL_NUMBER:
756 tbl_number(tp, opts, dp, col);
757 break;
758 case TBL_CELL_DOWN:
759 case TBL_CELL_SPAN:
760 break;
761 default:
762 abort();
763 }
764 }
765
766 static void
tbl_fill_string(struct termp * tp,const char * cp,size_t len)767 tbl_fill_string(struct termp *tp, const char *cp, size_t len)
768 {
769 size_t i, sz;
770
771 sz = term_strlen(tp, cp);
772 for (i = 0; i < len; i += sz)
773 term_word(tp, cp);
774 }
775
776 static void
tbl_fill_char(struct termp * tp,char c,size_t len)777 tbl_fill_char(struct termp *tp, char c, size_t len)
778 {
779 char cp[2];
780
781 cp[0] = c;
782 cp[1] = '\0';
783 tbl_fill_string(tp, cp, len);
784 }
785
786 static void
tbl_fill_border(struct termp * tp,int c,size_t len)787 tbl_fill_border(struct termp *tp, int c, size_t len)
788 {
789 char buf[12];
790
791 if ((c = borders_locale[c]) > 127) {
792 (void)snprintf(buf, sizeof(buf), "\\[u%04x]", c);
793 tbl_fill_string(tp, buf, len);
794 } else
795 tbl_fill_char(tp, c, len);
796 }
797
798 static void
tbl_direct_border(struct termp * tp,int c,size_t len)799 tbl_direct_border(struct termp *tp, int c, size_t len)
800 {
801 size_t i, sz;
802
803 c = borders_locale[c];
804 sz = (*tp->width)(tp, c);
805 for (i = 0; i < len; i += sz) {
806 (*tp->letter)(tp, c);
807 tp->viscol += sz;
808 }
809 }
810
811 static void
tbl_literal(struct termp * tp,const struct tbl_dat * dp,const struct roffcol * col)812 tbl_literal(struct termp *tp, const struct tbl_dat *dp,
813 const struct roffcol *col)
814 {
815 size_t len, padl, padr, width;
816 int ic, hspans;
817
818 assert(dp->string);
819 len = term_strlen(tp, dp->string);
820 width = col->width;
821 ic = dp->layout->col;
822 hspans = dp->hspans;
823 while (hspans--) {
824 width += tp->tbl.cols[ic].spacing;
825 ic++;
826 width += tp->tbl.cols[ic].width;
827 }
828
829 padr = width > len ? width - len : 0;
830 padl = 0;
831
832 switch (dp->layout->pos) {
833 case TBL_CELL_LONG:
834 padl = term_len(tp, 1);
835 padr = padr > padl ? padr - padl : 0;
836 break;
837 case TBL_CELL_CENTRE:
838 if (2 > padr)
839 break;
840 padl = padr / 2;
841 padr -= padl;
842 break;
843 case TBL_CELL_RIGHT:
844 padl = padr;
845 padr = 0;
846 break;
847 default:
848 break;
849 }
850
851 tbl_fill_char(tp, ASCII_NBRSP, padl);
852 tbl_word(tp, dp);
853 tbl_fill_char(tp, ASCII_NBRSP, padr);
854 }
855
856 static void
tbl_number(struct termp * tp,const struct tbl_opts * opts,const struct tbl_dat * dp,const struct roffcol * col)857 tbl_number(struct termp *tp, const struct tbl_opts *opts,
858 const struct tbl_dat *dp,
859 const struct roffcol *col)
860 {
861 const char *cp, *lastdigit, *lastpoint;
862 size_t intsz, padl, totsz;
863 char buf[2];
864
865 /*
866 * Almost the same code as in tblcalc_number():
867 * First find the position of the decimal point.
868 */
869
870 assert(dp->string);
871 lastdigit = lastpoint = NULL;
872 for (cp = dp->string; cp[0] != '\0'; cp++) {
873 if (cp[0] == '\\' && cp[1] == '&') {
874 lastdigit = lastpoint = cp;
875 break;
876 } else if (cp[0] == opts->decimal &&
877 (isdigit((unsigned char)cp[1]) ||
878 (cp > dp->string && isdigit((unsigned char)cp[-1]))))
879 lastpoint = cp;
880 else if (isdigit((unsigned char)cp[0]))
881 lastdigit = cp;
882 }
883
884 /* Then measure both widths. */
885
886 padl = 0;
887 totsz = term_strlen(tp, dp->string);
888 if (lastdigit != NULL) {
889 if (lastpoint == NULL)
890 lastpoint = lastdigit + 1;
891 intsz = 0;
892 buf[1] = '\0';
893 for (cp = dp->string; cp < lastpoint; cp++) {
894 buf[0] = cp[0];
895 intsz += term_strlen(tp, buf);
896 }
897
898 /*
899 * Pad left to match the decimal position,
900 * but avoid exceeding the total column width.
901 */
902
903 if (col->decimal > intsz && col->width > totsz) {
904 padl = col->decimal - intsz;
905 if (padl + totsz > col->width)
906 padl = col->width - totsz;
907 }
908
909 /* If it is not a number, simply center the string. */
910
911 } else if (col->width > totsz)
912 padl = (col->width - totsz) / 2;
913
914 tbl_fill_char(tp, ASCII_NBRSP, padl);
915 tbl_word(tp, dp);
916
917 /* Pad right to fill the column. */
918
919 if (col->width > padl + totsz)
920 tbl_fill_char(tp, ASCII_NBRSP, col->width - padl - totsz);
921 }
922
923 static void
tbl_word(struct termp * tp,const struct tbl_dat * dp)924 tbl_word(struct termp *tp, const struct tbl_dat *dp)
925 {
926 int prev_font;
927
928 prev_font = tp->fonti;
929 switch (dp->layout->font) {
930 case ESCAPE_FONTBI:
931 term_fontpush(tp, TERMFONT_BI);
932 break;
933 case ESCAPE_FONTBOLD:
934 case ESCAPE_FONTCB:
935 term_fontpush(tp, TERMFONT_BOLD);
936 break;
937 case ESCAPE_FONTITALIC:
938 case ESCAPE_FONTCI:
939 term_fontpush(tp, TERMFONT_UNDER);
940 break;
941 case ESCAPE_FONTROMAN:
942 case ESCAPE_FONTCR:
943 break;
944 default:
945 abort();
946 }
947
948 term_word(tp, dp->string);
949
950 term_fontpopq(tp, prev_font);
951 }
952