1 /* $OpenBSD: tbl_term.c,v 1.54 2018/12/12 21:54:30 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2011-2018 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 <sys/types.h> 19 20 #include <assert.h> 21 #include <ctype.h> 22 #include <stdio.h> 23 #include <stdlib.h> 24 #include <string.h> 25 26 #include "mandoc.h" 27 #include "tbl.h" 28 #include "out.h" 29 #include "term.h" 30 31 #define IS_HORIZ(cp) ((cp)->pos == TBL_CELL_HORIZ || \ 32 (cp)->pos == TBL_CELL_DHORIZ) 33 34 35 static size_t term_tbl_len(size_t, void *); 36 static size_t term_tbl_strlen(const char *, void *); 37 static size_t term_tbl_sulen(const struct roffsu *, void *); 38 static void tbl_data(struct termp *, const struct tbl_opts *, 39 const struct tbl_cell *, 40 const struct tbl_dat *, 41 const struct roffcol *); 42 static void tbl_direct_border(struct termp *, int, size_t); 43 static void tbl_fill_border(struct termp *, int, size_t); 44 static void tbl_fill_char(struct termp *, char, size_t); 45 static void tbl_fill_string(struct termp *, const char *, size_t); 46 static void tbl_hrule(struct termp *, const struct tbl_span *, 47 const struct tbl_span *, int); 48 static void tbl_literal(struct termp *, const struct tbl_dat *, 49 const struct roffcol *); 50 static void tbl_number(struct termp *, const struct tbl_opts *, 51 const struct tbl_dat *, 52 const struct roffcol *); 53 static void tbl_word(struct termp *, const struct tbl_dat *); 54 55 56 /* 57 * The following border-character tables are indexed 58 * by ternary (3-based) numbers, as opposed to binary or decimal. 59 * Each ternary digit describes the line width in one direction: 60 * 0 means no line, 1 single or light line, 2 double or heavy line. 61 */ 62 63 /* Positional values of the four directions. */ 64 #define BRIGHT 1 65 #define BDOWN 3 66 #define BLEFT (3 * 3) 67 #define BUP (3 * 3 * 3) 68 #define BHORIZ (BLEFT + BRIGHT) 69 70 /* Code points to use for each combination of widths. */ 71 static const int borders_utf8[81] = { 72 0x0020, 0x2576, 0x257a, /* 000 right */ 73 0x2577, 0x250c, 0x250d, /* 001 down */ 74 0x257b, 0x250e, 0x250f, /* 002 */ 75 0x2574, 0x2500, 0x257c, /* 010 left */ 76 0x2510, 0x252c, 0x252e, /* 011 left down */ 77 0x2512, 0x2530, 0x2532, /* 012 */ 78 0x2578, 0x257e, 0x2501, /* 020 left */ 79 0x2511, 0x252d, 0x252f, /* 021 left down */ 80 0x2513, 0x2531, 0x2533, /* 022 */ 81 0x2575, 0x2514, 0x2515, /* 100 up */ 82 0x2502, 0x251c, 0x251d, /* 101 up down */ 83 0x257d, 0x251f, 0x2522, /* 102 */ 84 0x2518, 0x2534, 0x2536, /* 110 up left */ 85 0x2524, 0x253c, 0x253e, /* 111 all */ 86 0x2527, 0x2541, 0x2546, /* 112 */ 87 0x2519, 0x2535, 0x2537, /* 120 up left */ 88 0x2525, 0x253d, 0x253f, /* 121 all */ 89 0x252a, 0x2545, 0x2548, /* 122 */ 90 0x2579, 0x2516, 0x2517, /* 200 up */ 91 0x257f, 0x251e, 0x2521, /* 201 up down */ 92 0x2503, 0x2520, 0x2523, /* 202 */ 93 0x251a, 0x2538, 0x253a, /* 210 up left */ 94 0x2526, 0x2540, 0x2544, /* 211 all */ 95 0x2528, 0x2542, 0x254a, /* 212 */ 96 0x251b, 0x2539, 0x253b, /* 220 up left */ 97 0x2529, 0x2543, 0x2547, /* 221 all */ 98 0x252b, 0x2549, 0x254b, /* 222 */ 99 }; 100 101 /* ASCII approximations for these code points, compatible with groff. */ 102 static const int borders_ascii[81] = { 103 ' ', '-', '=', /* 000 right */ 104 '|', '+', '+', /* 001 down */ 105 '|', '+', '+', /* 002 */ 106 '-', '-', '=', /* 010 left */ 107 '+', '+', '+', /* 011 left down */ 108 '+', '+', '+', /* 012 */ 109 '=', '=', '=', /* 020 left */ 110 '+', '+', '+', /* 021 left down */ 111 '+', '+', '+', /* 022 */ 112 '|', '+', '+', /* 100 up */ 113 '|', '+', '+', /* 101 up down */ 114 '|', '+', '+', /* 102 */ 115 '+', '+', '+', /* 110 up left */ 116 '+', '+', '+', /* 111 all */ 117 '+', '+', '+', /* 112 */ 118 '+', '+', '+', /* 120 up left */ 119 '+', '+', '+', /* 121 all */ 120 '+', '+', '+', /* 122 */ 121 '|', '+', '+', /* 200 up */ 122 '|', '+', '+', /* 201 up down */ 123 '|', '+', '+', /* 202 */ 124 '+', '+', '+', /* 210 up left */ 125 '+', '+', '+', /* 211 all */ 126 '+', '+', '+', /* 212 */ 127 '+', '+', '+', /* 220 up left */ 128 '+', '+', '+', /* 221 all */ 129 '+', '+', '+', /* 222 */ 130 }; 131 132 /* Either of the above according to the selected output encoding. */ 133 static const int *borders_locale; 134 135 136 static size_t 137 term_tbl_sulen(const struct roffsu *su, void *arg) 138 { 139 int i; 140 141 i = term_hen((const struct termp *)arg, su); 142 return i > 0 ? i : 0; 143 } 144 145 static size_t 146 term_tbl_strlen(const char *p, void *arg) 147 { 148 return term_strlen((const struct termp *)arg, p); 149 } 150 151 static size_t 152 term_tbl_len(size_t sz, void *arg) 153 { 154 return term_len((const struct termp *)arg, sz); 155 } 156 157 158 void 159 term_tbl(struct termp *tp, const struct tbl_span *sp) 160 { 161 const struct tbl_cell *cp, *cpn, *cpp, *cps; 162 const struct tbl_dat *dp; 163 static size_t offset; 164 size_t coloff, tsz; 165 int hspans, ic, more; 166 int dvert, fc, horiz, line, uvert; 167 168 /* Inhibit printing of spaces: we do padding ourselves. */ 169 170 tp->flags |= TERMP_NOSPACE | TERMP_NONOSPACE; 171 172 /* 173 * The first time we're invoked for a given table block, 174 * calculate the table widths and decimal positions. 175 */ 176 177 if (tp->tbl.cols == NULL) { 178 borders_locale = tp->enc == TERMENC_UTF8 ? 179 borders_utf8 : borders_ascii; 180 181 tp->tbl.len = term_tbl_len; 182 tp->tbl.slen = term_tbl_strlen; 183 tp->tbl.sulen = term_tbl_sulen; 184 tp->tbl.arg = tp; 185 186 tblcalc(&tp->tbl, sp, tp->tcol->offset, tp->tcol->rmargin); 187 188 /* Tables leak .ta settings to subsequent text. */ 189 190 term_tab_set(tp, NULL); 191 coloff = sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) || 192 sp->opts->lvert; 193 for (ic = 0; ic < sp->opts->cols; ic++) { 194 coloff += tp->tbl.cols[ic].width; 195 term_tab_iset(coloff); 196 coloff += tp->tbl.cols[ic].spacing; 197 } 198 199 /* Center the table as a whole. */ 200 201 offset = tp->tcol->offset; 202 if (sp->opts->opts & TBL_OPT_CENTRE) { 203 tsz = sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) 204 ? 2 : !!sp->opts->lvert + !!sp->opts->rvert; 205 for (ic = 0; ic + 1 < sp->opts->cols; ic++) 206 tsz += tp->tbl.cols[ic].width + 207 tp->tbl.cols[ic].spacing; 208 if (sp->opts->cols) 209 tsz += tp->tbl.cols[sp->opts->cols - 1].width; 210 if (offset + tsz > tp->tcol->rmargin) 211 tsz -= 1; 212 tp->tcol->offset = offset + tp->tcol->rmargin > tsz ? 213 (offset + tp->tcol->rmargin - tsz) / 2 : 0; 214 } 215 216 /* Horizontal frame at the start of boxed tables. */ 217 218 if (tp->enc == TERMENC_ASCII && 219 sp->opts->opts & TBL_OPT_DBOX) 220 tbl_hrule(tp, NULL, sp, TBL_OPT_DBOX); 221 if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX)) 222 tbl_hrule(tp, NULL, sp, TBL_OPT_BOX); 223 } 224 225 /* Set up the columns. */ 226 227 tp->flags |= TERMP_MULTICOL; 228 horiz = 0; 229 switch (sp->pos) { 230 case TBL_SPAN_HORIZ: 231 case TBL_SPAN_DHORIZ: 232 horiz = 1; 233 term_setcol(tp, 1); 234 break; 235 case TBL_SPAN_DATA: 236 term_setcol(tp, sp->opts->cols + 2); 237 coloff = tp->tcol->offset; 238 239 /* Set up a column for a left vertical frame. */ 240 241 if (sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) || 242 sp->opts->lvert) 243 coloff++; 244 tp->tcol->rmargin = coloff; 245 246 /* Set up the data columns. */ 247 248 dp = sp->first; 249 hspans = 0; 250 for (ic = 0; ic < sp->opts->cols; ic++) { 251 if (hspans == 0) { 252 tp->tcol++; 253 tp->tcol->offset = coloff; 254 } 255 coloff += tp->tbl.cols[ic].width; 256 tp->tcol->rmargin = coloff; 257 if (ic + 1 < sp->opts->cols) 258 coloff += tp->tbl.cols[ic].spacing; 259 if (hspans) { 260 hspans--; 261 continue; 262 } 263 if (dp == NULL) 264 continue; 265 hspans = dp->hspans; 266 if (ic || sp->layout->first->pos != TBL_CELL_SPAN) 267 dp = dp->next; 268 } 269 270 /* Set up a column for a right vertical frame. */ 271 272 tp->tcol++; 273 tp->tcol->offset = coloff + 1; 274 tp->tcol->rmargin = tp->maxrmargin; 275 276 /* Spans may have reduced the number of columns. */ 277 278 tp->lasttcol = tp->tcol - tp->tcols; 279 280 /* Fill the buffers for all data columns. */ 281 282 tp->tcol = tp->tcols; 283 cp = cpn = sp->layout->first; 284 dp = sp->first; 285 hspans = 0; 286 for (ic = 0; ic < sp->opts->cols; ic++) { 287 if (cpn != NULL) { 288 cp = cpn; 289 cpn = cpn->next; 290 } 291 if (hspans) { 292 hspans--; 293 continue; 294 } 295 tp->tcol++; 296 tp->col = 0; 297 tbl_data(tp, sp->opts, cp, dp, tp->tbl.cols + ic); 298 if (dp == NULL) 299 continue; 300 hspans = dp->hspans; 301 if (cp->pos != TBL_CELL_SPAN) 302 dp = dp->next; 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 line = sp->pos == TBL_SPAN_DHORIZ || 323 sp->layout->first->pos == TBL_CELL_DHORIZ ? 2 : 324 sp->pos == TBL_SPAN_HORIZ || 325 sp->layout->first->pos == TBL_CELL_HORIZ ? 1 : 0; 326 fc = BUP * uvert + BDOWN * dvert + BRIGHT * line; 327 if (uvert > 0 || dvert > 0 || (horiz && sp->opts->lvert)) { 328 (*tp->advance)(tp, tp->tcols->offset); 329 tp->viscol = tp->tcol->offset; 330 tbl_direct_border(tp, fc, 1); 331 } 332 333 /* Print the data cells. */ 334 335 more = 0; 336 if (horiz) 337 tbl_hrule(tp, sp->prev, sp, 0); 338 else { 339 cp = sp->layout->first; 340 cpn = sp->next == NULL ? NULL : 341 sp->next->layout->first; 342 cpp = sp->prev == NULL ? NULL : 343 sp->prev->layout->first; 344 dp = sp->first; 345 hspans = 0; 346 for (ic = 0; ic < sp->opts->cols; ic++) { 347 348 /* 349 * Figure out whether to print a 350 * vertical line after this cell 351 * and advance to next layout cell. 352 */ 353 354 uvert = dvert = fc = 0; 355 if (cp != NULL) { 356 cps = cp; 357 while (cps->next != NULL && 358 cps->next->pos == TBL_CELL_SPAN) 359 cps = cps->next; 360 if (sp->pos == TBL_SPAN_DATA) 361 uvert = dvert = cps->vert; 362 switch (cp->pos) { 363 case TBL_CELL_HORIZ: 364 fc = BHORIZ; 365 break; 366 case TBL_CELL_DHORIZ: 367 fc = BHORIZ * 2; 368 break; 369 default: 370 break; 371 } 372 } 373 if (cpp != NULL) { 374 if (uvert < cpp->vert && 375 cp != NULL && 376 ((IS_HORIZ(cp) && 377 !IS_HORIZ(cpp)) || 378 (cp->next != NULL && 379 cpp->next != NULL && 380 IS_HORIZ(cp->next) && 381 !IS_HORIZ(cpp->next)))) 382 uvert = cpp->vert; 383 cpp = cpp->next; 384 } 385 if (sp->opts->opts & TBL_OPT_ALLBOX) { 386 if (uvert == 0) 387 uvert = 1; 388 if (dvert == 0) 389 dvert = 1; 390 } 391 if (cpn != NULL) { 392 if (dvert == 0 || 393 (dvert < cpn->vert && 394 tp->enc == TERMENC_UTF8)) 395 dvert = cpn->vert; 396 cpn = cpn->next; 397 } 398 399 /* 400 * Skip later cells in a span, 401 * figure out whether to start a span, 402 * and advance to next data cell. 403 */ 404 405 if (hspans) { 406 hspans--; 407 cp = cp->next; 408 continue; 409 } 410 if (dp != NULL) { 411 hspans = dp->hspans; 412 if (ic || sp->layout->first->pos 413 != TBL_CELL_SPAN) 414 dp = dp->next; 415 } 416 417 /* 418 * Print one line of text in the cell 419 * and remember whether there is more. 420 */ 421 422 tp->tcol++; 423 if (tp->tcol->col < tp->tcol->lastcol) 424 term_flushln(tp); 425 if (tp->tcol->col < tp->tcol->lastcol) 426 more = 1; 427 428 /* 429 * Vertical frames between data cells, 430 * but not after the last column. 431 */ 432 433 if (fc == 0 && 434 ((uvert == 0 && dvert == 0 && 435 cp != NULL && (cp->next == NULL || 436 !IS_HORIZ(cp->next))) || 437 tp->tcol + 1 == 438 tp->tcols + tp->lasttcol)) { 439 if (cp != NULL) 440 cp = cp->next; 441 continue; 442 } 443 444 if (tp->viscol < tp->tcol->rmargin) { 445 (*tp->advance)(tp, tp->tcol->rmargin 446 - tp->viscol); 447 tp->viscol = tp->tcol->rmargin; 448 } 449 while (tp->viscol < tp->tcol->rmargin + 450 tp->tbl.cols[ic].spacing / 2) 451 tbl_direct_border(tp, fc, 1); 452 453 if (tp->tcol + 1 == tp->tcols + tp->lasttcol) 454 continue; 455 456 if (cp != NULL) { 457 switch (cp->pos) { 458 case TBL_CELL_HORIZ: 459 fc = BLEFT; 460 break; 461 case TBL_CELL_DHORIZ: 462 fc = BLEFT * 2; 463 break; 464 default: 465 fc = 0; 466 break; 467 } 468 cp = cp->next; 469 } 470 if (cp != NULL) { 471 switch (cp->pos) { 472 case TBL_CELL_HORIZ: 473 fc += BRIGHT; 474 break; 475 case TBL_CELL_DHORIZ: 476 fc += BRIGHT * 2; 477 break; 478 default: 479 break; 480 } 481 } 482 if (tp->tbl.cols[ic].spacing) 483 tbl_direct_border(tp, fc + 484 BUP * uvert + BDOWN * dvert, 1); 485 486 if (tp->enc == TERMENC_UTF8) 487 uvert = dvert = 0; 488 489 if (fc != 0) { 490 if (cp != NULL && 491 cp->pos == TBL_CELL_HORIZ) 492 fc = BHORIZ; 493 else if (cp != NULL && 494 cp->pos == TBL_CELL_DHORIZ) 495 fc = BHORIZ * 2; 496 else 497 fc = 0; 498 } 499 if (tp->tbl.cols[ic].spacing > 2 && 500 (uvert > 1 || dvert > 1 || fc != 0)) 501 tbl_direct_border(tp, fc + 502 BUP * (uvert > 1) + 503 BDOWN * (dvert > 1), 1); 504 } 505 } 506 507 /* Print the vertical frame at the end of each row. */ 508 509 uvert = dvert = sp->opts->opts & TBL_OPT_DBOX ? 2 : 510 sp->opts->opts & TBL_OPT_BOX ? 1 : 0; 511 if (sp->pos == TBL_SPAN_DATA && 512 uvert < sp->layout->last->vert && 513 sp->layout->last->col + 1 == sp->opts->cols) 514 uvert = dvert = sp->layout->last->vert; 515 if (sp->next != NULL && 516 dvert < sp->next->layout->last->vert && 517 sp->next->layout->last->col + 1 == sp->opts->cols) 518 dvert = sp->next->layout->last->vert; 519 if (sp->prev != NULL && 520 uvert < sp->prev->layout->last->vert && 521 sp->prev->layout->last->col + 1 == sp->opts->cols && 522 (horiz || (IS_HORIZ(sp->layout->last) && 523 !IS_HORIZ(sp->prev->layout->last)))) 524 uvert = sp->prev->layout->last->vert; 525 line = sp->pos == TBL_SPAN_DHORIZ || 526 (sp->layout->last->pos == TBL_CELL_DHORIZ && 527 sp->layout->last->col + 1 == sp->opts->cols) ? 2 : 528 sp->pos == TBL_SPAN_HORIZ || 529 (sp->layout->last->pos == TBL_CELL_HORIZ && 530 sp->layout->last->col + 1 == sp->opts->cols) ? 1 : 0; 531 fc = BUP * uvert + BDOWN * dvert + BLEFT * line; 532 if (uvert > 0 || dvert > 0 || (horiz && sp->opts->rvert)) { 533 if (horiz == 0 && (IS_HORIZ(sp->layout->last) == 0 || 534 sp->layout->last->col + 1 < sp->opts->cols)) { 535 tp->tcol++; 536 (*tp->advance)(tp, 537 tp->tcol->offset > tp->viscol ? 538 tp->tcol->offset - tp->viscol : 1); 539 } 540 tbl_direct_border(tp, fc, 1); 541 } 542 (*tp->endline)(tp); 543 tp->viscol = 0; 544 } while (more); 545 546 /* 547 * Clean up after this row. If it is the last line 548 * of the table, print the box line and clean up 549 * column data; otherwise, print the allbox line. 550 */ 551 552 term_setcol(tp, 1); 553 tp->flags &= ~TERMP_MULTICOL; 554 tp->tcol->rmargin = tp->maxrmargin; 555 if (sp->next == NULL) { 556 if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX)) { 557 tbl_hrule(tp, sp, NULL, TBL_OPT_BOX); 558 tp->skipvsp = 1; 559 } 560 if (tp->enc == TERMENC_ASCII && 561 sp->opts->opts & TBL_OPT_DBOX) { 562 tbl_hrule(tp, sp, NULL, TBL_OPT_DBOX); 563 tp->skipvsp = 2; 564 } 565 assert(tp->tbl.cols); 566 free(tp->tbl.cols); 567 tp->tbl.cols = NULL; 568 tp->tcol->offset = offset; 569 } else if (horiz == 0 && sp->opts->opts & TBL_OPT_ALLBOX && 570 (sp->next == NULL || sp->next->pos == TBL_SPAN_DATA || 571 sp->next->next != NULL)) 572 tbl_hrule(tp, sp, sp->next, TBL_OPT_ALLBOX); 573 574 tp->flags &= ~TERMP_NONOSPACE; 575 } 576 577 static void 578 tbl_hrule(struct termp *tp, const struct tbl_span *spp, 579 const struct tbl_span *spn, int flags) 580 { 581 const struct tbl_cell *cpp; /* Layout cell above this line. */ 582 const struct tbl_cell *cpn; /* Layout cell below this line. */ 583 const struct tbl_dat *dpn; /* Data cell below this line. */ 584 const struct roffcol *col; /* Contains width and spacing. */ 585 int opts; /* For the table as a whole. */ 586 int bw; /* Box line width. */ 587 int hw; /* Horizontal line width. */ 588 int lw, rw; /* Left and right line widths. */ 589 int uw, dw; /* Vertical line widths. */ 590 591 cpp = spp == NULL ? NULL : spp->layout->first; 592 cpn = spn == NULL ? NULL : spn->layout->first; 593 dpn = NULL; 594 if (spn != NULL) { 595 if (spn->pos == TBL_SPAN_DATA) 596 dpn = spn->first; 597 else if (spn->next != NULL) 598 dpn = spn->next->first; 599 } 600 opts = spn == NULL ? spp->opts->opts : spn->opts->opts; 601 bw = opts & TBL_OPT_DBOX ? (tp->enc == TERMENC_UTF8 ? 2 : 1) : 602 opts & (TBL_OPT_BOX | TBL_OPT_ALLBOX) ? 1 : 0; 603 hw = flags == TBL_OPT_DBOX || flags == TBL_OPT_BOX ? bw : 604 spn->pos == TBL_SPAN_DHORIZ ? 2 : 1; 605 606 /* Print the left end of the line. */ 607 608 if (tp->viscol == 0) { 609 (*tp->advance)(tp, tp->tcols->offset); 610 tp->viscol = tp->tcols->offset; 611 } 612 if (flags != 0) 613 tbl_direct_border(tp, 614 (spp == NULL ? 0 : BUP * bw) + 615 (spn == NULL ? 0 : BDOWN * bw) + 616 (spp == NULL || cpn == NULL || 617 cpn->pos != TBL_CELL_DOWN ? BRIGHT * hw : 0), 1); 618 619 for (;;) { 620 col = tp->tbl.cols + (cpn == NULL ? cpp->col : cpn->col); 621 622 /* Print the horizontal line inside this column. */ 623 624 lw = cpp == NULL || cpn == NULL || 625 (cpn->pos != TBL_CELL_DOWN && 626 (dpn == NULL || strcmp(dpn->string, "\\^") != 0)) 627 ? hw : 0; 628 tbl_direct_border(tp, BHORIZ * lw, 629 col->width + col->spacing / 2); 630 631 /* 632 * Figure out whether a vertical line is crossing 633 * at the end of this column, 634 * and advance to the next column. 635 */ 636 637 uw = dw = 0; 638 if (cpp != NULL) { 639 if (flags != TBL_OPT_DBOX) { 640 uw = cpp->vert; 641 if (uw == 0 && opts & TBL_OPT_ALLBOX) 642 uw = 1; 643 } 644 cpp = cpp->next; 645 } 646 if (cpn != NULL) { 647 if (flags != TBL_OPT_DBOX) { 648 dw = cpn->vert; 649 if (dw == 0 && opts & TBL_OPT_ALLBOX) 650 dw = 1; 651 } 652 cpn = cpn->next; 653 while (dpn != NULL && dpn->layout != cpn) 654 dpn = dpn->next; 655 } 656 if (cpp == NULL && cpn == NULL) 657 break; 658 659 /* Vertical lines do not cross spanned cells. */ 660 661 if (cpp != NULL && cpp->pos == TBL_CELL_SPAN) 662 uw = 0; 663 if (cpn != NULL && cpn->pos == TBL_CELL_SPAN) 664 dw = 0; 665 666 /* The horizontal line inside the next column. */ 667 668 rw = cpp == NULL || cpn == NULL || 669 (cpn->pos != TBL_CELL_DOWN && 670 (dpn == NULL || strcmp(dpn->string, "\\^") != 0)) 671 ? hw : 0; 672 673 /* The line crossing at the end of this column. */ 674 675 if (col->spacing) 676 tbl_direct_border(tp, BLEFT * lw + 677 BRIGHT * rw + BUP * uw + BDOWN * dw, 1); 678 679 /* 680 * In ASCII output, a crossing may print two characters. 681 */ 682 683 if (tp->enc != TERMENC_ASCII || (uw < 2 && dw < 2)) 684 uw = dw = 0; 685 if (col->spacing > 2) 686 tbl_direct_border(tp, 687 BHORIZ * rw + BUP * uw + BDOWN * dw, 1); 688 689 /* Padding before the start of the next column. */ 690 691 if (col->spacing > 4) 692 tbl_direct_border(tp, 693 BHORIZ * rw, (col->spacing - 3) / 2); 694 } 695 696 /* Print the right end of the line. */ 697 698 if (flags != 0) { 699 tbl_direct_border(tp, 700 (spp == NULL ? 0 : BUP * bw) + 701 (spn == NULL ? 0 : BDOWN * bw) + 702 (spp == NULL || spn == NULL || 703 spn->layout->last->pos != TBL_CELL_DOWN ? 704 BLEFT * hw : 0), 1); 705 (*tp->endline)(tp); 706 tp->viscol = 0; 707 } 708 } 709 710 static void 711 tbl_data(struct termp *tp, const struct tbl_opts *opts, 712 const struct tbl_cell *cp, const struct tbl_dat *dp, 713 const struct roffcol *col) 714 { 715 switch (cp->pos) { 716 case TBL_CELL_HORIZ: 717 tbl_fill_border(tp, BHORIZ, col->width); 718 return; 719 case TBL_CELL_DHORIZ: 720 tbl_fill_border(tp, BHORIZ * 2, col->width); 721 return; 722 default: 723 break; 724 } 725 726 if (dp == NULL) 727 return; 728 729 switch (dp->pos) { 730 case TBL_DATA_NONE: 731 return; 732 case TBL_DATA_HORIZ: 733 case TBL_DATA_NHORIZ: 734 tbl_fill_border(tp, BHORIZ, col->width); 735 return; 736 case TBL_DATA_NDHORIZ: 737 case TBL_DATA_DHORIZ: 738 tbl_fill_border(tp, BHORIZ * 2, col->width); 739 return; 740 default: 741 break; 742 } 743 744 switch (cp->pos) { 745 case TBL_CELL_LONG: 746 case TBL_CELL_CENTRE: 747 case TBL_CELL_LEFT: 748 case TBL_CELL_RIGHT: 749 tbl_literal(tp, dp, col); 750 break; 751 case TBL_CELL_NUMBER: 752 tbl_number(tp, opts, dp, col); 753 break; 754 case TBL_CELL_DOWN: 755 case TBL_CELL_SPAN: 756 break; 757 default: 758 abort(); 759 } 760 } 761 762 static void 763 tbl_fill_string(struct termp *tp, const char *cp, size_t len) 764 { 765 size_t i, sz; 766 767 sz = term_strlen(tp, cp); 768 for (i = 0; i < len; i += sz) 769 term_word(tp, cp); 770 } 771 772 static void 773 tbl_fill_char(struct termp *tp, char c, size_t len) 774 { 775 char cp[2]; 776 777 cp[0] = c; 778 cp[1] = '\0'; 779 tbl_fill_string(tp, cp, len); 780 } 781 782 static void 783 tbl_fill_border(struct termp *tp, int c, size_t len) 784 { 785 char buf[12]; 786 787 if ((c = borders_locale[c]) > 127) { 788 (void)snprintf(buf, sizeof(buf), "\\[u%04x]", c); 789 tbl_fill_string(tp, buf, len); 790 } else 791 tbl_fill_char(tp, c, len); 792 } 793 794 static void 795 tbl_direct_border(struct termp *tp, int c, size_t len) 796 { 797 size_t i, sz; 798 799 c = borders_locale[c]; 800 sz = (*tp->width)(tp, c); 801 for (i = 0; i < len; i += sz) { 802 (*tp->letter)(tp, c); 803 tp->viscol += sz; 804 } 805 } 806 807 static void 808 tbl_literal(struct termp *tp, const struct tbl_dat *dp, 809 const struct roffcol *col) 810 { 811 size_t len, padl, padr, width; 812 int ic, hspans; 813 814 assert(dp->string); 815 len = term_strlen(tp, dp->string); 816 width = col->width; 817 ic = dp->layout->col; 818 hspans = dp->hspans; 819 while (hspans--) 820 width += tp->tbl.cols[++ic].width + 3; 821 822 padr = width > len ? width - len : 0; 823 padl = 0; 824 825 switch (dp->layout->pos) { 826 case TBL_CELL_LONG: 827 padl = term_len(tp, 1); 828 padr = padr > padl ? padr - padl : 0; 829 break; 830 case TBL_CELL_CENTRE: 831 if (2 > padr) 832 break; 833 padl = padr / 2; 834 padr -= padl; 835 break; 836 case TBL_CELL_RIGHT: 837 padl = padr; 838 padr = 0; 839 break; 840 default: 841 break; 842 } 843 844 tbl_fill_char(tp, ASCII_NBRSP, padl); 845 tbl_word(tp, dp); 846 tbl_fill_char(tp, ASCII_NBRSP, padr); 847 } 848 849 static void 850 tbl_number(struct termp *tp, const struct tbl_opts *opts, 851 const struct tbl_dat *dp, 852 const struct roffcol *col) 853 { 854 const char *cp, *lastdigit, *lastpoint; 855 size_t intsz, padl, totsz; 856 char buf[2]; 857 858 /* 859 * Almost the same code as in tblcalc_number(): 860 * First find the position of the decimal point. 861 */ 862 863 assert(dp->string); 864 lastdigit = lastpoint = NULL; 865 for (cp = dp->string; cp[0] != '\0'; cp++) { 866 if (cp[0] == '\\' && cp[1] == '&') { 867 lastdigit = lastpoint = cp; 868 break; 869 } else if (cp[0] == opts->decimal && 870 (isdigit((unsigned char)cp[1]) || 871 (cp > dp->string && isdigit((unsigned char)cp[-1])))) 872 lastpoint = cp; 873 else if (isdigit((unsigned char)cp[0])) 874 lastdigit = cp; 875 } 876 877 /* Then measure both widths. */ 878 879 padl = 0; 880 totsz = term_strlen(tp, dp->string); 881 if (lastdigit != NULL) { 882 if (lastpoint == NULL) 883 lastpoint = lastdigit + 1; 884 intsz = 0; 885 buf[1] = '\0'; 886 for (cp = dp->string; cp < lastpoint; cp++) { 887 buf[0] = cp[0]; 888 intsz += term_strlen(tp, buf); 889 } 890 891 /* 892 * Pad left to match the decimal position, 893 * but avoid exceeding the total column width. 894 */ 895 896 if (col->decimal > intsz && col->width > totsz) { 897 padl = col->decimal - intsz; 898 if (padl + totsz > col->width) 899 padl = col->width - totsz; 900 } 901 902 /* If it is not a number, simply center the string. */ 903 904 } else if (col->width > totsz) 905 padl = (col->width - totsz) / 2; 906 907 tbl_fill_char(tp, ASCII_NBRSP, padl); 908 tbl_word(tp, dp); 909 910 /* Pad right to fill the column. */ 911 912 if (col->width > padl + totsz) 913 tbl_fill_char(tp, ASCII_NBRSP, col->width - padl - totsz); 914 } 915 916 static void 917 tbl_word(struct termp *tp, const struct tbl_dat *dp) 918 { 919 int prev_font; 920 921 prev_font = tp->fonti; 922 if (dp->layout->flags & TBL_CELL_BOLD) 923 term_fontpush(tp, TERMFONT_BOLD); 924 else if (dp->layout->flags & TBL_CELL_ITALIC) 925 term_fontpush(tp, TERMFONT_UNDER); 926 927 term_word(tp, dp->string); 928 929 term_fontpopq(tp, prev_font); 930 } 931