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 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 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 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 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 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 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 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 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 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 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 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