1 /* $Id: tbl_term.c,v 1.75 2021/08/10 12:55:04 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2011-2021 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 *, const struct tbl_span *, 50 int); 51 static void tbl_literal(struct termp *, const struct tbl_dat *, 52 const struct roffcol *); 53 static void tbl_number(struct termp *, const struct tbl_opts *, 54 const struct tbl_dat *, 55 const struct roffcol *); 56 static void tbl_word(struct termp *, const struct tbl_dat *); 57 58 59 /* 60 * The following border-character tables are indexed 61 * by ternary (3-based) numbers, as opposed to binary or decimal. 62 * Each ternary digit describes the line width in one direction: 63 * 0 means no line, 1 single or light line, 2 double or heavy line. 64 */ 65 66 /* Positional values of the four directions. */ 67 #define BRIGHT 1 68 #define BDOWN 3 69 #define BLEFT (3 * 3) 70 #define BUP (3 * 3 * 3) 71 #define BHORIZ (BLEFT + BRIGHT) 72 73 /* Code points to use for each combination of widths. */ 74 static const int borders_utf8[81] = { 75 0x0020, 0x2576, 0x257a, /* 000 right */ 76 0x2577, 0x250c, 0x250d, /* 001 down */ 77 0x257b, 0x250e, 0x250f, /* 002 */ 78 0x2574, 0x2500, 0x257c, /* 010 left */ 79 0x2510, 0x252c, 0x252e, /* 011 left down */ 80 0x2512, 0x2530, 0x2532, /* 012 */ 81 0x2578, 0x257e, 0x2501, /* 020 left */ 82 0x2511, 0x252d, 0x252f, /* 021 left down */ 83 0x2513, 0x2531, 0x2533, /* 022 */ 84 0x2575, 0x2514, 0x2515, /* 100 up */ 85 0x2502, 0x251c, 0x251d, /* 101 up down */ 86 0x257d, 0x251f, 0x2522, /* 102 */ 87 0x2518, 0x2534, 0x2536, /* 110 up left */ 88 0x2524, 0x253c, 0x253e, /* 111 all */ 89 0x2527, 0x2541, 0x2546, /* 112 */ 90 0x2519, 0x2535, 0x2537, /* 120 up left */ 91 0x2525, 0x253d, 0x253f, /* 121 all */ 92 0x252a, 0x2545, 0x2548, /* 122 */ 93 0x2579, 0x2516, 0x2517, /* 200 up */ 94 0x257f, 0x251e, 0x2521, /* 201 up down */ 95 0x2503, 0x2520, 0x2523, /* 202 */ 96 0x251a, 0x2538, 0x253a, /* 210 up left */ 97 0x2526, 0x2540, 0x2544, /* 211 all */ 98 0x2528, 0x2542, 0x254a, /* 212 */ 99 0x251b, 0x2539, 0x253b, /* 220 up left */ 100 0x2529, 0x2543, 0x2547, /* 221 all */ 101 0x252b, 0x2549, 0x254b, /* 222 */ 102 }; 103 104 /* ASCII approximations for these code points, compatible with groff. */ 105 static const int borders_ascii[81] = { 106 ' ', '-', '=', /* 000 right */ 107 '|', '+', '+', /* 001 down */ 108 '|', '+', '+', /* 002 */ 109 '-', '-', '=', /* 010 left */ 110 '+', '+', '+', /* 011 left down */ 111 '+', '+', '+', /* 012 */ 112 '=', '=', '=', /* 020 left */ 113 '+', '+', '+', /* 021 left down */ 114 '+', '+', '+', /* 022 */ 115 '|', '+', '+', /* 100 up */ 116 '|', '+', '+', /* 101 up down */ 117 '|', '+', '+', /* 102 */ 118 '+', '+', '+', /* 110 up left */ 119 '+', '+', '+', /* 111 all */ 120 '+', '+', '+', /* 112 */ 121 '+', '+', '+', /* 120 up left */ 122 '+', '+', '+', /* 121 all */ 123 '+', '+', '+', /* 122 */ 124 '|', '+', '+', /* 200 up */ 125 '|', '+', '+', /* 201 up down */ 126 '|', '+', '+', /* 202 */ 127 '+', '+', '+', /* 210 up left */ 128 '+', '+', '+', /* 211 all */ 129 '+', '+', '+', /* 212 */ 130 '+', '+', '+', /* 220 up left */ 131 '+', '+', '+', /* 221 all */ 132 '+', '+', '+', /* 222 */ 133 }; 134 135 /* Either of the above according to the selected output encoding. */ 136 static const int *borders_locale; 137 138 139 static size_t 140 term_tbl_sulen(const struct roffsu *su, void *arg) 141 { 142 int i; 143 144 i = term_hen((const struct termp *)arg, su); 145 return i > 0 ? i : 0; 146 } 147 148 static size_t 149 term_tbl_strlen(const char *p, void *arg) 150 { 151 return term_strlen((const struct termp *)arg, p); 152 } 153 154 static size_t 155 term_tbl_len(size_t sz, void *arg) 156 { 157 return term_len((const struct termp *)arg, sz); 158 } 159 160 161 void 162 term_tbl(struct termp *tp, const struct tbl_span *sp) 163 { 164 const struct tbl_cell *cp, *cpn, *cpp, *cps; 165 const struct tbl_dat *dp; 166 static size_t offset; 167 size_t save_offset; 168 size_t coloff, tsz; 169 int hspans, ic, more; 170 int dvert, fc, horiz, lhori, rhori, uvert; 171 172 /* Inhibit printing of spaces: we do padding ourselves. */ 173 174 tp->flags |= TERMP_NOSPACE | TERMP_NONOSPACE; 175 save_offset = tp->tcol->offset; 176 177 /* 178 * The first time we're invoked for a given table block, 179 * calculate the table widths and decimal positions. 180 */ 181 182 if (tp->tbl.cols == NULL) { 183 borders_locale = tp->enc == TERMENC_UTF8 ? 184 borders_utf8 : borders_ascii; 185 186 tp->tbl.len = term_tbl_len; 187 tp->tbl.slen = term_tbl_strlen; 188 tp->tbl.sulen = term_tbl_sulen; 189 tp->tbl.arg = tp; 190 191 tblcalc(&tp->tbl, sp, tp->tcol->offset, tp->tcol->rmargin); 192 193 /* Center the table as a whole. */ 194 195 offset = tp->tcol->offset; 196 if (sp->opts->opts & TBL_OPT_CENTRE) { 197 tsz = sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) 198 ? 2 : !!sp->opts->lvert + !!sp->opts->rvert; 199 for (ic = 0; ic + 1 < sp->opts->cols; ic++) 200 tsz += tp->tbl.cols[ic].width + 201 tp->tbl.cols[ic].spacing; 202 if (sp->opts->cols) 203 tsz += tp->tbl.cols[sp->opts->cols - 1].width; 204 if (offset + tsz > tp->tcol->rmargin) 205 tsz -= 1; 206 offset = offset + tp->tcol->rmargin > tsz ? 207 (offset + tp->tcol->rmargin - tsz) / 2 : 0; 208 tp->tcol->offset = offset; 209 } 210 211 /* Horizontal frame at the start of boxed tables. */ 212 213 if (tp->enc == TERMENC_ASCII && 214 sp->opts->opts & TBL_OPT_DBOX) 215 tbl_hrule(tp, NULL, sp, sp, TBL_OPT_DBOX); 216 if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX)) 217 tbl_hrule(tp, NULL, sp, sp, TBL_OPT_BOX); 218 } 219 220 /* Set up the columns. */ 221 222 tp->flags |= TERMP_MULTICOL; 223 tp->tcol->offset = offset; 224 horiz = 0; 225 switch (sp->pos) { 226 case TBL_SPAN_HORIZ: 227 case TBL_SPAN_DHORIZ: 228 horiz = 1; 229 term_setcol(tp, 1); 230 break; 231 case TBL_SPAN_DATA: 232 term_setcol(tp, sp->opts->cols + 2); 233 coloff = tp->tcol->offset; 234 235 /* Set up a column for a left vertical frame. */ 236 237 if (sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) || 238 sp->opts->lvert) 239 coloff++; 240 tp->tcol->rmargin = coloff; 241 242 /* Set up the data columns. */ 243 244 dp = sp->first; 245 hspans = 0; 246 for (ic = 0; ic < sp->opts->cols; ic++) { 247 if (hspans == 0) { 248 tp->tcol++; 249 tp->tcol->offset = coloff; 250 } 251 coloff += tp->tbl.cols[ic].width; 252 tp->tcol->rmargin = coloff; 253 if (ic + 1 < sp->opts->cols) 254 coloff += tp->tbl.cols[ic].spacing; 255 if (hspans) { 256 hspans--; 257 continue; 258 } 259 if (dp != NULL && 260 (ic || sp->layout->first->pos != TBL_CELL_SPAN)) { 261 hspans = dp->hspans; 262 dp = dp->next; 263 } 264 } 265 266 /* Set up a column for a right vertical frame. */ 267 268 tp->tcol++; 269 tp->tcol->offset = coloff + 1; 270 tp->tcol->rmargin = tp->maxrmargin; 271 272 /* Spans may have reduced the number of columns. */ 273 274 tp->lasttcol = tp->tcol - tp->tcols; 275 276 /* Fill the buffers for all data columns. */ 277 278 tp->tcol = tp->tcols; 279 cp = cpn = sp->layout->first; 280 dp = sp->first; 281 hspans = 0; 282 for (ic = 0; ic < sp->opts->cols; ic++) { 283 if (cpn != NULL) { 284 cp = cpn; 285 cpn = cpn->next; 286 } 287 if (hspans) { 288 hspans--; 289 continue; 290 } 291 tp->tcol++; 292 tp->col = 0; 293 tbl_data(tp, sp->opts, cp, dp, tp->tbl.cols + ic); 294 if (dp != NULL && 295 (ic || sp->layout->first->pos != TBL_CELL_SPAN)) { 296 hspans = dp->hspans; 297 dp = dp->next; 298 } 299 } 300 break; 301 } 302 303 do { 304 /* Print the vertical frame at the start of each row. */ 305 306 tp->tcol = tp->tcols; 307 uvert = dvert = sp->opts->opts & TBL_OPT_DBOX ? 2 : 308 sp->opts->opts & TBL_OPT_BOX ? 1 : 0; 309 if (sp->pos == TBL_SPAN_DATA && uvert < sp->layout->vert) 310 uvert = dvert = sp->layout->vert; 311 if (sp->next != NULL && sp->next->pos == TBL_SPAN_DATA && 312 dvert < sp->next->layout->vert) 313 dvert = sp->next->layout->vert; 314 if (sp->prev != NULL && uvert < sp->prev->layout->vert && 315 (horiz || (IS_HORIZ(sp->layout->first) && 316 !IS_HORIZ(sp->prev->layout->first)))) 317 uvert = sp->prev->layout->vert; 318 rhori = sp->pos == TBL_SPAN_DHORIZ || 319 (sp->first != NULL && sp->first->pos == TBL_DATA_DHORIZ) || 320 sp->layout->first->pos == TBL_CELL_DHORIZ ? 2 : 321 sp->pos == TBL_SPAN_HORIZ || 322 (sp->first != NULL && sp->first->pos == TBL_DATA_HORIZ) || 323 sp->layout->first->pos == TBL_CELL_HORIZ ? 1 : 0; 324 fc = BUP * uvert + BDOWN * dvert + BRIGHT * rhori; 325 if (uvert > 0 || dvert > 0 || (horiz && sp->opts->lvert)) { 326 (*tp->advance)(tp, tp->tcols->offset); 327 tp->viscol = tp->tcol->offset; 328 tbl_direct_border(tp, fc, 1); 329 } 330 331 /* Print the data cells. */ 332 333 more = 0; 334 if (horiz) 335 tbl_hrule(tp, sp->prev, sp, sp->next, 0); 336 else { 337 cp = sp->layout->first; 338 cpn = sp->next == NULL ? NULL : 339 sp->next->layout->first; 340 cpp = sp->prev == NULL ? NULL : 341 sp->prev->layout->first; 342 dp = sp->first; 343 hspans = 0; 344 for (ic = 0; ic < sp->opts->cols; ic++) { 345 346 /* 347 * Figure out whether to print a 348 * vertical line after this cell 349 * and advance to next layout cell. 350 */ 351 352 uvert = dvert = fc = 0; 353 if (cp != NULL) { 354 cps = cp; 355 while (cps->next != NULL && 356 cps->next->pos == TBL_CELL_SPAN) 357 cps = cps->next; 358 if (sp->pos == TBL_SPAN_DATA) 359 uvert = dvert = cps->vert; 360 switch (cp->pos) { 361 case TBL_CELL_HORIZ: 362 fc = BHORIZ; 363 break; 364 case TBL_CELL_DHORIZ: 365 fc = BHORIZ * 2; 366 break; 367 default: 368 break; 369 } 370 } 371 if (cpp != NULL) { 372 if (uvert < cpp->vert && 373 cp != NULL && 374 ((IS_HORIZ(cp) && 375 !IS_HORIZ(cpp)) || 376 (cp->next != NULL && 377 cpp->next != NULL && 378 IS_HORIZ(cp->next) && 379 !IS_HORIZ(cpp->next)))) 380 uvert = cpp->vert; 381 cpp = cpp->next; 382 } 383 if (sp->opts->opts & TBL_OPT_ALLBOX) { 384 if (uvert == 0) 385 uvert = 1; 386 if (dvert == 0) 387 dvert = 1; 388 } 389 if (cpn != NULL) { 390 if (dvert == 0 || 391 (dvert < cpn->vert && 392 tp->enc == TERMENC_UTF8)) 393 dvert = cpn->vert; 394 cpn = cpn->next; 395 } 396 397 lhori = (cp != NULL && 398 cp->pos == TBL_CELL_DHORIZ) || 399 (dp != NULL && 400 dp->pos == TBL_DATA_DHORIZ) ? 2 : 401 (cp != NULL && 402 cp->pos == TBL_CELL_HORIZ) || 403 (dp != NULL && 404 dp->pos == TBL_DATA_HORIZ) ? 1 : 0; 405 406 /* 407 * Skip later cells in a span, 408 * figure out whether to start a span, 409 * and advance to next data cell. 410 */ 411 412 if (hspans) { 413 hspans--; 414 cp = cp->next; 415 continue; 416 } 417 if (dp != NULL && (ic || 418 sp->layout->first->pos != TBL_CELL_SPAN)) { 419 hspans = dp->hspans; 420 dp = dp->next; 421 } 422 423 /* 424 * Print one line of text in the cell 425 * and remember whether there is more. 426 */ 427 428 tp->tcol++; 429 if (tp->tcol->col < tp->tcol->lastcol) 430 term_flushln(tp); 431 if (tp->tcol->col < tp->tcol->lastcol) 432 more = 1; 433 434 /* 435 * Vertical frames between data cells, 436 * but not after the last column. 437 */ 438 439 if (fc == 0 && 440 ((uvert == 0 && dvert == 0 && 441 cp != NULL && (cp->next == NULL || 442 !IS_HORIZ(cp->next))) || 443 tp->tcol + 1 == 444 tp->tcols + tp->lasttcol)) { 445 if (cp != NULL) 446 cp = cp->next; 447 continue; 448 } 449 450 if (tp->viscol < tp->tcol->rmargin) { 451 (*tp->advance)(tp, tp->tcol->rmargin 452 - tp->viscol); 453 tp->viscol = tp->tcol->rmargin; 454 } 455 while (tp->viscol < tp->tcol->rmargin + 456 tp->tbl.cols[ic].spacing / 2) 457 tbl_direct_border(tp, 458 BHORIZ * lhori, 1); 459 460 if (tp->tcol + 1 == tp->tcols + tp->lasttcol) 461 continue; 462 463 if (cp != NULL) 464 cp = cp->next; 465 466 rhori = (cp != NULL && 467 cp->pos == TBL_CELL_DHORIZ) || 468 (dp != NULL && 469 dp->pos == TBL_DATA_DHORIZ) ? 2 : 470 (cp != NULL && 471 cp->pos == TBL_CELL_HORIZ) || 472 (dp != NULL && 473 dp->pos == TBL_DATA_HORIZ) ? 1 : 0; 474 475 if (tp->tbl.cols[ic].spacing) 476 tbl_direct_border(tp, 477 BLEFT * lhori + BRIGHT * rhori + 478 BUP * uvert + BDOWN * dvert, 1); 479 480 if (tp->enc == TERMENC_UTF8) 481 uvert = dvert = 0; 482 483 if (tp->tbl.cols[ic].spacing > 2 && 484 (uvert > 1 || dvert > 1 || rhori)) 485 tbl_direct_border(tp, 486 BHORIZ * rhori + 487 BUP * (uvert > 1) + 488 BDOWN * (dvert > 1), 1); 489 } 490 } 491 492 /* Print the vertical frame at the end of each row. */ 493 494 uvert = dvert = sp->opts->opts & TBL_OPT_DBOX ? 2 : 495 sp->opts->opts & TBL_OPT_BOX ? 1 : 0; 496 if (sp->pos == TBL_SPAN_DATA && 497 uvert < sp->layout->last->vert && 498 sp->layout->last->col + 1 == sp->opts->cols) 499 uvert = dvert = sp->layout->last->vert; 500 if (sp->next != NULL && 501 dvert < sp->next->layout->last->vert && 502 sp->next->layout->last->col + 1 == sp->opts->cols) 503 dvert = sp->next->layout->last->vert; 504 if (sp->prev != NULL && 505 uvert < sp->prev->layout->last->vert && 506 sp->prev->layout->last->col + 1 == sp->opts->cols && 507 (horiz || (IS_HORIZ(sp->layout->last) && 508 !IS_HORIZ(sp->prev->layout->last)))) 509 uvert = sp->prev->layout->last->vert; 510 lhori = sp->pos == TBL_SPAN_DHORIZ || 511 (sp->last != NULL && 512 sp->last->pos == TBL_DATA_DHORIZ && 513 sp->last->layout->col + 1 == sp->opts->cols) || 514 (sp->layout->last->pos == TBL_CELL_DHORIZ && 515 sp->layout->last->col + 1 == sp->opts->cols) ? 2 : 516 sp->pos == TBL_SPAN_HORIZ || 517 (sp->last != NULL && 518 sp->last->pos == TBL_DATA_HORIZ && 519 sp->last->layout->col + 1 == sp->opts->cols) || 520 (sp->layout->last->pos == TBL_CELL_HORIZ && 521 sp->layout->last->col + 1 == sp->opts->cols) ? 1 : 0; 522 fc = BUP * uvert + BDOWN * dvert + BLEFT * lhori; 523 if (uvert > 0 || dvert > 0 || (horiz && sp->opts->rvert)) { 524 if (horiz == 0 && (IS_HORIZ(sp->layout->last) == 0 || 525 sp->layout->last->col + 1 < sp->opts->cols)) { 526 tp->tcol++; 527 do { 528 tbl_direct_border(tp, 529 BHORIZ * lhori, 1); 530 } while (tp->viscol < tp->tcol->offset); 531 } 532 tbl_direct_border(tp, fc, 1); 533 } 534 (*tp->endline)(tp); 535 tp->viscol = 0; 536 } while (more); 537 538 /* 539 * Clean up after this row. If it is the last line 540 * of the table, print the box line and clean up 541 * column data; otherwise, print the allbox line. 542 */ 543 544 term_setcol(tp, 1); 545 tp->flags &= ~TERMP_MULTICOL; 546 tp->tcol->rmargin = tp->maxrmargin; 547 if (sp->next == NULL) { 548 if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX)) { 549 tbl_hrule(tp, sp, sp, NULL, TBL_OPT_BOX); 550 tp->skipvsp = 1; 551 } 552 if (tp->enc == TERMENC_ASCII && 553 sp->opts->opts & TBL_OPT_DBOX) { 554 tbl_hrule(tp, sp, sp, NULL, TBL_OPT_DBOX); 555 tp->skipvsp = 2; 556 } 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].width + 3; 825 826 padr = width > len ? width - len : 0; 827 padl = 0; 828 829 switch (dp->layout->pos) { 830 case TBL_CELL_LONG: 831 padl = term_len(tp, 1); 832 padr = padr > padl ? padr - padl : 0; 833 break; 834 case TBL_CELL_CENTRE: 835 if (2 > padr) 836 break; 837 padl = padr / 2; 838 padr -= padl; 839 break; 840 case TBL_CELL_RIGHT: 841 padl = padr; 842 padr = 0; 843 break; 844 default: 845 break; 846 } 847 848 tbl_fill_char(tp, ASCII_NBRSP, padl); 849 tbl_word(tp, dp); 850 tbl_fill_char(tp, ASCII_NBRSP, padr); 851 } 852 853 static void 854 tbl_number(struct termp *tp, const struct tbl_opts *opts, 855 const struct tbl_dat *dp, 856 const struct roffcol *col) 857 { 858 const char *cp, *lastdigit, *lastpoint; 859 size_t intsz, padl, totsz; 860 char buf[2]; 861 862 /* 863 * Almost the same code as in tblcalc_number(): 864 * First find the position of the decimal point. 865 */ 866 867 assert(dp->string); 868 lastdigit = lastpoint = NULL; 869 for (cp = dp->string; cp[0] != '\0'; cp++) { 870 if (cp[0] == '\\' && cp[1] == '&') { 871 lastdigit = lastpoint = cp; 872 break; 873 } else if (cp[0] == opts->decimal && 874 (isdigit((unsigned char)cp[1]) || 875 (cp > dp->string && isdigit((unsigned char)cp[-1])))) 876 lastpoint = cp; 877 else if (isdigit((unsigned char)cp[0])) 878 lastdigit = cp; 879 } 880 881 /* Then measure both widths. */ 882 883 padl = 0; 884 totsz = term_strlen(tp, dp->string); 885 if (lastdigit != NULL) { 886 if (lastpoint == NULL) 887 lastpoint = lastdigit + 1; 888 intsz = 0; 889 buf[1] = '\0'; 890 for (cp = dp->string; cp < lastpoint; cp++) { 891 buf[0] = cp[0]; 892 intsz += term_strlen(tp, buf); 893 } 894 895 /* 896 * Pad left to match the decimal position, 897 * but avoid exceeding the total column width. 898 */ 899 900 if (col->decimal > intsz && col->width > totsz) { 901 padl = col->decimal - intsz; 902 if (padl + totsz > col->width) 903 padl = col->width - totsz; 904 } 905 906 /* If it is not a number, simply center the string. */ 907 908 } else if (col->width > totsz) 909 padl = (col->width - totsz) / 2; 910 911 tbl_fill_char(tp, ASCII_NBRSP, padl); 912 tbl_word(tp, dp); 913 914 /* Pad right to fill the column. */ 915 916 if (col->width > padl + totsz) 917 tbl_fill_char(tp, ASCII_NBRSP, col->width - padl - totsz); 918 } 919 920 static void 921 tbl_word(struct termp *tp, const struct tbl_dat *dp) 922 { 923 int prev_font; 924 925 prev_font = tp->fonti; 926 switch (dp->layout->font) { 927 case ESCAPE_FONTBI: 928 term_fontpush(tp, TERMFONT_BI); 929 break; 930 case ESCAPE_FONTBOLD: 931 case ESCAPE_FONTCB: 932 term_fontpush(tp, TERMFONT_BOLD); 933 break; 934 case ESCAPE_FONTITALIC: 935 case ESCAPE_FONTCI: 936 term_fontpush(tp, TERMFONT_UNDER); 937 break; 938 case ESCAPE_FONTROMAN: 939 case ESCAPE_FONTCR: 940 break; 941 default: 942 abort(); 943 } 944 945 term_word(tp, dp->string); 946 947 term_fontpopq(tp, prev_font); 948 } 949