1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 static void teken_subr_cursor_up(teken_t *, unsigned int); 32 static void teken_subr_erase_line(teken_t *, unsigned int); 33 static void teken_subr_regular_character(teken_t *, teken_char_t); 34 static void teken_subr_reset_to_initial_state(teken_t *); 35 static void teken_subr_save_cursor(teken_t *); 36 37 static inline int 38 teken_tab_isset(teken_t *t, unsigned int col) 39 { 40 unsigned int b, o; 41 42 if (col >= T_NUMCOL) 43 return ((col % 8) == 0); 44 45 b = col / (sizeof(unsigned int) * 8); 46 o = col % (sizeof(unsigned int) * 8); 47 48 return (t->t_tabstops[b] & (1 << o)); 49 } 50 51 static inline void 52 teken_tab_clear(teken_t *t, unsigned int col) 53 { 54 unsigned int b, o; 55 56 if (col >= T_NUMCOL) 57 return; 58 59 b = col / (sizeof(unsigned int) * 8); 60 o = col % (sizeof(unsigned int) * 8); 61 62 t->t_tabstops[b] &= ~(1 << o); 63 } 64 65 static inline void 66 teken_tab_set(teken_t *t, unsigned int col) 67 { 68 unsigned int b, o; 69 70 if (col >= T_NUMCOL) 71 return; 72 73 b = col / (sizeof(unsigned int) * 8); 74 o = col % (sizeof(unsigned int) * 8); 75 76 t->t_tabstops[b] |= 1 << o; 77 } 78 79 static void 80 teken_tab_default(teken_t *t) 81 { 82 unsigned int i; 83 84 memset(&t->t_tabstops, 0, T_NUMCOL / 8); 85 86 for (i = 8; i < T_NUMCOL; i += 8) 87 teken_tab_set(t, i); 88 } 89 90 static void 91 teken_subr_do_scroll(teken_t *t, int amount) 92 { 93 teken_rect_t tr; 94 teken_pos_t tp; 95 96 teken_assert(t->t_cursor.tp_row <= t->t_winsize.tp_row); 97 teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row); 98 teken_assert(amount != 0); 99 100 /* Copy existing data 1 line up. */ 101 if (amount > 0) { 102 /* Scroll down. */ 103 104 /* Copy existing data up. */ 105 if (t->t_scrollreg.ts_begin + amount < t->t_scrollreg.ts_end) { 106 tr.tr_begin.tp_row = t->t_scrollreg.ts_begin + amount; 107 tr.tr_begin.tp_col = 0; 108 tr.tr_end.tp_row = t->t_scrollreg.ts_end; 109 tr.tr_end.tp_col = t->t_winsize.tp_col; 110 tp.tp_row = t->t_scrollreg.ts_begin; 111 tp.tp_col = 0; 112 teken_funcs_copy(t, &tr, &tp); 113 114 tr.tr_begin.tp_row = t->t_scrollreg.ts_end - amount; 115 } else { 116 tr.tr_begin.tp_row = t->t_scrollreg.ts_begin; 117 } 118 119 /* Clear the last lines. */ 120 tr.tr_begin.tp_col = 0; 121 tr.tr_end.tp_row = t->t_scrollreg.ts_end; 122 tr.tr_end.tp_col = t->t_winsize.tp_col; 123 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); 124 } else { 125 /* Scroll up. */ 126 amount = -amount; 127 128 /* Copy existing data down. */ 129 if (t->t_scrollreg.ts_begin + amount < t->t_scrollreg.ts_end) { 130 tr.tr_begin.tp_row = t->t_scrollreg.ts_begin; 131 tr.tr_begin.tp_col = 0; 132 tr.tr_end.tp_row = t->t_scrollreg.ts_end - amount; 133 tr.tr_end.tp_col = t->t_winsize.tp_col; 134 tp.tp_row = t->t_scrollreg.ts_begin + amount; 135 tp.tp_col = 0; 136 teken_funcs_copy(t, &tr, &tp); 137 138 tr.tr_end.tp_row = t->t_scrollreg.ts_begin + amount; 139 } else { 140 tr.tr_end.tp_row = t->t_scrollreg.ts_end; 141 } 142 143 /* Clear the first lines. */ 144 tr.tr_begin.tp_row = t->t_scrollreg.ts_begin; 145 tr.tr_begin.tp_col = 0; 146 tr.tr_end.tp_col = t->t_winsize.tp_col; 147 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); 148 } 149 } 150 151 static ssize_t 152 teken_subr_do_cpr(teken_t *t, unsigned int cmd, char response[16]) 153 { 154 155 switch (cmd) { 156 case 5: /* Operating status. */ 157 strcpy(response, "0n"); 158 return (2); 159 case 6: { /* Cursor position. */ 160 int len; 161 162 len = snprintf(response, 16, "%u;%uR", 163 (t->t_cursor.tp_row - t->t_originreg.ts_begin) + 1, 164 t->t_cursor.tp_col + 1); 165 166 if (len >= 16) 167 return (-1); 168 return (len); 169 } 170 case 15: /* Printer status. */ 171 strcpy(response, "13n"); 172 return (3); 173 case 25: /* UDK status. */ 174 strcpy(response, "20n"); 175 return (3); 176 case 26: /* Keyboard status. */ 177 strcpy(response, "27;1n"); 178 return (5); 179 default: 180 teken_printf("Unknown DSR\n"); 181 return (-1); 182 } 183 } 184 185 static void 186 teken_subr_alignment_test(teken_t *t) 187 { 188 teken_rect_t tr; 189 190 t->t_cursor.tp_row = t->t_cursor.tp_col = 0; 191 t->t_scrollreg.ts_begin = 0; 192 t->t_scrollreg.ts_end = t->t_winsize.tp_row; 193 t->t_originreg = t->t_scrollreg; 194 t->t_stateflags &= ~(TS_WRAPPED|TS_ORIGIN); 195 teken_funcs_cursor(t); 196 197 tr.tr_begin.tp_row = 0; 198 tr.tr_begin.tp_col = 0; 199 tr.tr_end = t->t_winsize; 200 teken_funcs_fill(t, &tr, 'E', &t->t_defattr); 201 } 202 203 static void 204 teken_subr_backspace(teken_t *t) 205 { 206 207 if (t->t_stateflags & TS_CONS25) { 208 if (t->t_cursor.tp_col == 0) { 209 if (t->t_cursor.tp_row == t->t_originreg.ts_begin) 210 return; 211 t->t_cursor.tp_row--; 212 t->t_cursor.tp_col = t->t_winsize.tp_col - 1; 213 } else { 214 t->t_cursor.tp_col--; 215 } 216 } else { 217 if (t->t_cursor.tp_col == 0) 218 return; 219 220 t->t_cursor.tp_col--; 221 t->t_stateflags &= ~TS_WRAPPED; 222 } 223 224 teken_funcs_cursor(t); 225 } 226 227 static void 228 teken_subr_bell(teken_t *t) 229 { 230 231 teken_funcs_bell(t); 232 } 233 234 static void 235 teken_subr_carriage_return(teken_t *t) 236 { 237 238 t->t_cursor.tp_col = 0; 239 t->t_stateflags &= ~TS_WRAPPED; 240 teken_funcs_cursor(t); 241 } 242 243 static void 244 teken_subr_cursor_backward(teken_t *t, unsigned int ncols) 245 { 246 247 if (ncols > t->t_cursor.tp_col) 248 t->t_cursor.tp_col = 0; 249 else 250 t->t_cursor.tp_col -= ncols; 251 t->t_stateflags &= ~TS_WRAPPED; 252 teken_funcs_cursor(t); 253 } 254 255 static void 256 teken_subr_cursor_backward_tabulation(teken_t *t, unsigned int ntabs) 257 { 258 259 do { 260 /* Stop when we've reached the beginning of the line. */ 261 if (t->t_cursor.tp_col == 0) 262 break; 263 264 t->t_cursor.tp_col--; 265 266 /* Tab marker set. */ 267 if (teken_tab_isset(t, t->t_cursor.tp_col)) 268 ntabs--; 269 } while (ntabs > 0); 270 271 teken_funcs_cursor(t); 272 } 273 274 static void 275 teken_subr_cursor_down(teken_t *t, unsigned int nrows) 276 { 277 278 if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) 279 t->t_cursor.tp_row = t->t_scrollreg.ts_end - 1; 280 else 281 t->t_cursor.tp_row += nrows; 282 t->t_stateflags &= ~TS_WRAPPED; 283 teken_funcs_cursor(t); 284 } 285 286 static void 287 teken_subr_cursor_forward(teken_t *t, unsigned int ncols) 288 { 289 290 if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) 291 t->t_cursor.tp_col = t->t_winsize.tp_col - 1; 292 else 293 t->t_cursor.tp_col += ncols; 294 t->t_stateflags &= ~TS_WRAPPED; 295 teken_funcs_cursor(t); 296 } 297 298 static void 299 teken_subr_cursor_forward_tabulation(teken_t *t, unsigned int ntabs) 300 { 301 302 do { 303 /* Stop when we've reached the end of the line. */ 304 if (t->t_cursor.tp_col == t->t_winsize.tp_col - 1) 305 break; 306 307 t->t_cursor.tp_col++; 308 309 /* Tab marker set. */ 310 if (teken_tab_isset(t, t->t_cursor.tp_col)) 311 ntabs--; 312 } while (ntabs > 0); 313 314 teken_funcs_cursor(t); 315 } 316 317 static void 318 teken_subr_cursor_next_line(teken_t *t, unsigned int ncols) 319 { 320 321 t->t_cursor.tp_col = 0; 322 teken_subr_cursor_down(t, ncols); 323 } 324 325 static void 326 teken_subr_cursor_position(teken_t *t, unsigned int row, unsigned int col) 327 { 328 329 row = row - 1 + t->t_originreg.ts_begin; 330 t->t_cursor.tp_row = row < t->t_originreg.ts_end ? 331 row : t->t_originreg.ts_end - 1; 332 333 col--; 334 t->t_cursor.tp_col = col < t->t_winsize.tp_col ? 335 col : t->t_winsize.tp_col - 1; 336 337 t->t_stateflags &= ~TS_WRAPPED; 338 teken_funcs_cursor(t); 339 } 340 341 static void 342 teken_subr_cursor_position_report(teken_t *t, unsigned int cmd) 343 { 344 char response[18] = "\x1B["; 345 ssize_t len; 346 347 len = teken_subr_do_cpr(t, cmd, response + 2); 348 if (len < 0) 349 return; 350 351 teken_funcs_respond(t, response, len + 2); 352 } 353 354 static void 355 teken_subr_cursor_previous_line(teken_t *t, unsigned int ncols) 356 { 357 358 t->t_cursor.tp_col = 0; 359 teken_subr_cursor_up(t, ncols); 360 } 361 362 static void 363 teken_subr_cursor_up(teken_t *t, unsigned int nrows) 364 { 365 366 if (t->t_scrollreg.ts_begin + nrows >= t->t_cursor.tp_row) 367 t->t_cursor.tp_row = t->t_scrollreg.ts_begin; 368 else 369 t->t_cursor.tp_row -= nrows; 370 t->t_stateflags &= ~TS_WRAPPED; 371 teken_funcs_cursor(t); 372 } 373 374 static void 375 teken_subr_delete_character(teken_t *t, unsigned int ncols) 376 { 377 teken_rect_t tr; 378 379 tr.tr_begin.tp_row = t->t_cursor.tp_row; 380 tr.tr_end.tp_row = t->t_cursor.tp_row + 1; 381 tr.tr_end.tp_col = t->t_winsize.tp_col; 382 383 if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) { 384 tr.tr_begin.tp_col = t->t_cursor.tp_col; 385 } else { 386 /* Copy characters to the left. */ 387 tr.tr_begin.tp_col = t->t_cursor.tp_col + ncols; 388 teken_funcs_copy(t, &tr, &t->t_cursor); 389 390 tr.tr_begin.tp_col = t->t_winsize.tp_col - ncols; 391 } 392 393 /* Blank trailing columns. */ 394 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); 395 } 396 397 static void 398 teken_subr_delete_line(teken_t *t, unsigned int nrows) 399 { 400 teken_rect_t tr; 401 402 /* Ignore if outside scrolling region. */ 403 if (t->t_cursor.tp_row < t->t_scrollreg.ts_begin || 404 t->t_cursor.tp_row >= t->t_scrollreg.ts_end) 405 return; 406 407 tr.tr_begin.tp_col = 0; 408 tr.tr_end.tp_row = t->t_scrollreg.ts_end; 409 tr.tr_end.tp_col = t->t_winsize.tp_col; 410 411 if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) { 412 tr.tr_begin.tp_row = t->t_cursor.tp_row; 413 } else { 414 teken_pos_t tp; 415 416 /* Copy rows up. */ 417 tr.tr_begin.tp_row = t->t_cursor.tp_row + nrows; 418 tp.tp_row = t->t_cursor.tp_row; 419 tp.tp_col = 0; 420 teken_funcs_copy(t, &tr, &tp); 421 422 tr.tr_begin.tp_row = t->t_scrollreg.ts_end - nrows; 423 } 424 425 /* Blank trailing rows. */ 426 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); 427 } 428 429 static void 430 teken_subr_device_control_string(teken_t *t) 431 { 432 433 teken_printf("Unsupported device control string\n"); 434 t->t_stateflags |= TS_INSTRING; 435 } 436 437 static void 438 teken_subr_device_status_report(teken_t *t, unsigned int cmd) 439 { 440 char response[19] = "\x1B[?"; 441 ssize_t len; 442 443 len = teken_subr_do_cpr(t, cmd, response + 3); 444 if (len < 0) 445 return; 446 447 teken_funcs_respond(t, response, len + 3); 448 } 449 450 static void 451 teken_subr_double_height_double_width_line_top(teken_t *t __unused) 452 { 453 454 teken_printf("double height double width top\n"); 455 } 456 457 static void 458 teken_subr_double_height_double_width_line_bottom(teken_t *t __unused) 459 { 460 461 teken_printf("double height double width bottom\n"); 462 } 463 464 static void 465 teken_subr_erase_character(teken_t *t, unsigned int ncols) 466 { 467 teken_rect_t tr; 468 469 tr.tr_begin = t->t_cursor; 470 tr.tr_end.tp_row = t->t_cursor.tp_row + 1; 471 472 if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) 473 tr.tr_end.tp_col = t->t_winsize.tp_col; 474 else 475 tr.tr_end.tp_col = t->t_cursor.tp_col + ncols; 476 477 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); 478 } 479 480 static void 481 teken_subr_erase_display(teken_t *t, unsigned int mode) 482 { 483 teken_rect_t r; 484 485 r.tr_begin.tp_col = 0; 486 r.tr_end.tp_col = t->t_winsize.tp_col; 487 488 switch (mode) { 489 case 1: /* Erase from the top to the cursor. */ 490 teken_subr_erase_line(t, 1); 491 492 /* Erase lines above. */ 493 if (t->t_cursor.tp_row == 0) 494 return; 495 r.tr_begin.tp_row = 0; 496 r.tr_end.tp_row = t->t_cursor.tp_row; 497 break; 498 case 2: /* Erase entire display. */ 499 r.tr_begin.tp_row = 0; 500 r.tr_end.tp_row = t->t_winsize.tp_row; 501 break; 502 default: /* Erase from cursor to the bottom. */ 503 teken_subr_erase_line(t, 0); 504 505 /* Erase lines below. */ 506 if (t->t_cursor.tp_row == t->t_winsize.tp_row - 1) 507 return; 508 r.tr_begin.tp_row = t->t_cursor.tp_row + 1; 509 r.tr_end.tp_row = t->t_winsize.tp_row; 510 break; 511 } 512 513 teken_funcs_fill(t, &r, BLANK, &t->t_curattr); 514 } 515 516 static void 517 teken_subr_erase_line(teken_t *t, unsigned int mode) 518 { 519 teken_rect_t r; 520 521 r.tr_begin.tp_row = t->t_cursor.tp_row; 522 r.tr_end.tp_row = t->t_cursor.tp_row + 1; 523 524 switch (mode) { 525 case 1: /* Erase from the beginning of the line to the cursor. */ 526 r.tr_begin.tp_col = 0; 527 r.tr_end.tp_col = t->t_cursor.tp_col + 1; 528 break; 529 case 2: /* Erase entire line. */ 530 r.tr_begin.tp_col = 0; 531 r.tr_end.tp_col = t->t_winsize.tp_col; 532 break; 533 default: /* Erase from cursor to the end of the line. */ 534 r.tr_begin.tp_col = t->t_cursor.tp_col; 535 r.tr_end.tp_col = t->t_winsize.tp_col; 536 break; 537 } 538 539 teken_funcs_fill(t, &r, BLANK, &t->t_curattr); 540 } 541 542 static void 543 teken_subr_g0_scs_special_graphics(teken_t *t __unused) 544 { 545 546 t->t_scs[0] = teken_scs_special_graphics; 547 } 548 549 static void 550 teken_subr_g0_scs_uk_national(teken_t *t __unused) 551 { 552 553 t->t_scs[0] = teken_scs_uk_national; 554 } 555 556 static void 557 teken_subr_g0_scs_us_ascii(teken_t *t __unused) 558 { 559 560 t->t_scs[0] = teken_scs_us_ascii; 561 } 562 563 static void 564 teken_subr_g1_scs_special_graphics(teken_t *t __unused) 565 { 566 567 t->t_scs[1] = teken_scs_special_graphics; 568 } 569 570 static void 571 teken_subr_g1_scs_uk_national(teken_t *t __unused) 572 { 573 574 t->t_scs[1] = teken_scs_uk_national; 575 } 576 577 static void 578 teken_subr_g1_scs_us_ascii(teken_t *t __unused) 579 { 580 581 t->t_scs[1] = teken_scs_us_ascii; 582 } 583 584 static void 585 teken_subr_horizontal_position_absolute(teken_t *t, unsigned int col) 586 { 587 588 col--; 589 t->t_cursor.tp_col = col < t->t_winsize.tp_col ? 590 col : t->t_winsize.tp_col - 1; 591 592 t->t_stateflags &= ~TS_WRAPPED; 593 teken_funcs_cursor(t); 594 } 595 596 static void 597 teken_subr_horizontal_tab(teken_t *t) 598 { 599 600 teken_subr_cursor_forward_tabulation(t, 1); 601 } 602 603 static void 604 teken_subr_horizontal_tab_set(teken_t *t) 605 { 606 607 teken_tab_set(t, t->t_cursor.tp_col); 608 } 609 610 static void 611 teken_subr_index(teken_t *t) 612 { 613 614 if (t->t_cursor.tp_row < t->t_scrollreg.ts_end - 1) { 615 t->t_cursor.tp_row++; 616 t->t_stateflags &= ~TS_WRAPPED; 617 teken_funcs_cursor(t); 618 } else { 619 teken_subr_do_scroll(t, 1); 620 } 621 } 622 623 static void 624 teken_subr_insert_character(teken_t *t, unsigned int ncols) 625 { 626 teken_rect_t tr; 627 628 tr.tr_begin = t->t_cursor; 629 tr.tr_end.tp_row = t->t_cursor.tp_row + 1; 630 631 if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) { 632 tr.tr_end.tp_col = t->t_winsize.tp_col; 633 } else { 634 teken_pos_t tp; 635 636 /* Copy characters to the right. */ 637 tr.tr_end.tp_col = t->t_winsize.tp_col - ncols; 638 tp.tp_row = t->t_cursor.tp_row; 639 tp.tp_col = t->t_cursor.tp_col + ncols; 640 teken_funcs_copy(t, &tr, &tp); 641 642 tr.tr_end.tp_col = t->t_cursor.tp_col + ncols; 643 } 644 645 /* Blank current location. */ 646 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); 647 } 648 649 static void 650 teken_subr_insert_line(teken_t *t, unsigned int nrows) 651 { 652 teken_rect_t tr; 653 654 /* Ignore if outside scrolling region. */ 655 if (t->t_cursor.tp_row < t->t_scrollreg.ts_begin || 656 t->t_cursor.tp_row >= t->t_scrollreg.ts_end) 657 return; 658 659 tr.tr_begin.tp_row = t->t_cursor.tp_row; 660 tr.tr_begin.tp_col = 0; 661 tr.tr_end.tp_col = t->t_winsize.tp_col; 662 663 if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) { 664 tr.tr_end.tp_row = t->t_scrollreg.ts_end; 665 } else { 666 teken_pos_t tp; 667 668 /* Copy lines down. */ 669 tr.tr_end.tp_row = t->t_scrollreg.ts_end - nrows; 670 tp.tp_row = t->t_cursor.tp_row + nrows; 671 tp.tp_col = 0; 672 teken_funcs_copy(t, &tr, &tp); 673 674 tr.tr_end.tp_row = t->t_cursor.tp_row + nrows; 675 } 676 677 /* Blank current location. */ 678 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); 679 } 680 681 static void 682 teken_subr_keypad_application_mode(teken_t *t) 683 { 684 685 teken_funcs_param(t, TP_KEYPADAPP, 1); 686 } 687 688 static void 689 teken_subr_keypad_numeric_mode(teken_t *t) 690 { 691 692 teken_funcs_param(t, TP_KEYPADAPP, 0); 693 } 694 695 static void 696 teken_subr_newline(teken_t *t) 697 { 698 699 t->t_cursor.tp_row++; 700 701 if (t->t_cursor.tp_row >= t->t_scrollreg.ts_end) { 702 teken_subr_do_scroll(t, 1); 703 t->t_cursor.tp_row = t->t_scrollreg.ts_end - 1; 704 } 705 706 t->t_stateflags &= ~TS_WRAPPED; 707 teken_funcs_cursor(t); 708 } 709 710 static void 711 teken_subr_newpage(teken_t *t) 712 { 713 714 if (t->t_stateflags & TS_CONS25) { 715 teken_rect_t tr; 716 717 /* Clear screen. */ 718 tr.tr_begin.tp_row = t->t_originreg.ts_begin; 719 tr.tr_begin.tp_col = 0; 720 tr.tr_end.tp_row = t->t_originreg.ts_end; 721 tr.tr_end.tp_col = t->t_winsize.tp_col; 722 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr); 723 724 /* Cursor at top left. */ 725 t->t_cursor.tp_row = t->t_originreg.ts_begin; 726 t->t_cursor.tp_col = 0; 727 t->t_stateflags &= ~TS_WRAPPED; 728 teken_funcs_cursor(t); 729 } else { 730 teken_subr_newline(t); 731 } 732 } 733 734 static void 735 teken_subr_next_line(teken_t *t) 736 { 737 738 t->t_cursor.tp_col = 0; 739 teken_subr_newline(t); 740 } 741 742 static void 743 teken_subr_operating_system_command(teken_t *t) 744 { 745 746 teken_printf("Unsupported operating system command\n"); 747 t->t_stateflags |= TS_INSTRING; 748 } 749 750 static void 751 teken_subr_pan_down(teken_t *t, unsigned int nrows) 752 { 753 754 teken_subr_do_scroll(t, (int)nrows); 755 } 756 757 static void 758 teken_subr_pan_up(teken_t *t, unsigned int nrows) 759 { 760 761 teken_subr_do_scroll(t, -(int)nrows); 762 } 763 764 static void 765 teken_subr_primary_device_attributes(teken_t *t, unsigned int request) 766 { 767 768 if (request == 0) { 769 const char response[] = "\x1B[?1;2c"; 770 771 teken_funcs_respond(t, response, sizeof response - 1); 772 } else { 773 teken_printf("Unknown DA1\n"); 774 } 775 } 776 777 static void 778 teken_subr_do_putchar(teken_t *t, const teken_pos_t *tp, teken_char_t c, 779 int width) 780 { 781 782 if (t->t_stateflags & TS_INSERT && 783 tp->tp_col < t->t_winsize.tp_col - width) { 784 teken_rect_t ctr; 785 teken_pos_t ctp; 786 787 /* Insert mode. Move existing characters to the right. */ 788 ctr.tr_begin = *tp; 789 ctr.tr_end.tp_row = tp->tp_row + 1; 790 ctr.tr_end.tp_col = t->t_winsize.tp_col - width; 791 ctp.tp_row = tp->tp_row; 792 ctp.tp_col = tp->tp_col + width; 793 teken_funcs_copy(t, &ctr, &ctp); 794 } 795 796 teken_funcs_putchar(t, tp, c, &t->t_curattr); 797 798 if (width == 2 && tp->tp_col + 1 < t->t_winsize.tp_col) { 799 teken_pos_t tp2; 800 teken_attr_t attr; 801 802 /* Print second half of CJK fullwidth character. */ 803 tp2.tp_row = tp->tp_row; 804 tp2.tp_col = tp->tp_col + 1; 805 attr = t->t_curattr; 806 attr.ta_format |= TF_CJK_RIGHT; 807 teken_funcs_putchar(t, &tp2, c, &attr); 808 } 809 } 810 811 static void 812 teken_subr_regular_character(teken_t *t, teken_char_t c) 813 { 814 int width; 815 816 if (t->t_stateflags & TS_8BIT) { 817 if (!(t->t_stateflags & TS_CONS25) && (c <= 0x1b || c == 0x7f)) 818 return; 819 c = teken_scs_process(t, c); 820 width = 1; 821 } else { 822 c = teken_scs_process(t, c); 823 width = teken_wcwidth(c); 824 /* XXX: Don't process zero-width characters yet. */ 825 if (width <= 0) 826 return; 827 } 828 829 if (t->t_stateflags & TS_CONS25) { 830 teken_subr_do_putchar(t, &t->t_cursor, c, width); 831 t->t_cursor.tp_col += width; 832 833 if (t->t_cursor.tp_col >= t->t_winsize.tp_col) { 834 if (t->t_cursor.tp_row == t->t_scrollreg.ts_end - 1) { 835 /* Perform scrolling. */ 836 teken_subr_do_scroll(t, 1); 837 } else { 838 /* No scrolling needed. */ 839 if (t->t_cursor.tp_row < 840 t->t_winsize.tp_row - 1) 841 t->t_cursor.tp_row++; 842 } 843 t->t_cursor.tp_col = 0; 844 } 845 } else if (t->t_stateflags & TS_AUTOWRAP && 846 ((t->t_stateflags & TS_WRAPPED && 847 t->t_cursor.tp_col + 1 == t->t_winsize.tp_col) || 848 t->t_cursor.tp_col + width > t->t_winsize.tp_col)) { 849 teken_pos_t tp; 850 851 /* 852 * Perform line wrapping, if: 853 * - Autowrapping is enabled, and 854 * - We're in the wrapped state at the last column, or 855 * - The character to be printed does not fit anymore. 856 */ 857 if (t->t_cursor.tp_row == t->t_scrollreg.ts_end - 1) { 858 /* Perform scrolling. */ 859 teken_subr_do_scroll(t, 1); 860 tp.tp_row = t->t_scrollreg.ts_end - 1; 861 } else { 862 /* No scrolling needed. */ 863 tp.tp_row = t->t_cursor.tp_row + 1; 864 if (tp.tp_row == t->t_winsize.tp_row) { 865 /* 866 * Corner case: regular character 867 * outside scrolling region, but at the 868 * bottom of the screen. 869 */ 870 teken_subr_do_putchar(t, &t->t_cursor, 871 c, width); 872 return; 873 } 874 } 875 876 tp.tp_col = 0; 877 teken_subr_do_putchar(t, &tp, c, width); 878 879 t->t_cursor.tp_row = tp.tp_row; 880 t->t_cursor.tp_col = width; 881 t->t_stateflags &= ~TS_WRAPPED; 882 } else { 883 /* No line wrapping needed. */ 884 teken_subr_do_putchar(t, &t->t_cursor, c, width); 885 t->t_cursor.tp_col += width; 886 887 if (t->t_cursor.tp_col >= t->t_winsize.tp_col) { 888 t->t_stateflags |= TS_WRAPPED; 889 t->t_cursor.tp_col = t->t_winsize.tp_col - 1; 890 } else { 891 t->t_stateflags &= ~TS_WRAPPED; 892 } 893 } 894 895 teken_funcs_cursor(t); 896 } 897 898 static void 899 teken_subr_reset_dec_mode(teken_t *t, unsigned int cmd) 900 { 901 902 switch (cmd) { 903 case 1: /* Cursor keys mode. */ 904 t->t_stateflags &= ~TS_CURSORKEYS; 905 break; 906 case 2: /* DECANM: ANSI/VT52 mode. */ 907 teken_printf("DECRST VT52\n"); 908 break; 909 case 3: /* 132 column mode. */ 910 teken_funcs_param(t, TP_132COLS, 0); 911 teken_subr_reset_to_initial_state(t); 912 break; 913 case 5: /* Inverse video. */ 914 teken_printf("DECRST inverse video\n"); 915 break; 916 case 6: /* Origin mode. */ 917 t->t_stateflags &= ~TS_ORIGIN; 918 t->t_originreg.ts_begin = 0; 919 t->t_originreg.ts_end = t->t_winsize.tp_row; 920 t->t_cursor.tp_row = t->t_cursor.tp_col = 0; 921 t->t_stateflags &= ~TS_WRAPPED; 922 teken_funcs_cursor(t); 923 break; 924 case 7: /* Autowrap mode. */ 925 t->t_stateflags &= ~TS_AUTOWRAP; 926 break; 927 case 8: /* Autorepeat mode. */ 928 teken_funcs_param(t, TP_AUTOREPEAT, 0); 929 break; 930 case 25: /* Hide cursor. */ 931 teken_funcs_param(t, TP_SHOWCURSOR, 0); 932 break; 933 case 40: /* Disallow 132 columns. */ 934 teken_printf("DECRST allow 132\n"); 935 break; 936 case 45: /* Disable reverse wraparound. */ 937 teken_printf("DECRST reverse wraparound\n"); 938 break; 939 case 47: /* Switch to alternate buffer. */ 940 teken_printf("Switch to alternate buffer\n"); 941 break; 942 case 1000: /* Mouse input. */ 943 teken_funcs_param(t, TP_MOUSE, 0); 944 break; 945 default: 946 teken_printf("Unknown DECRST: %u\n", cmd); 947 } 948 } 949 950 static void 951 teken_subr_reset_mode(teken_t *t, unsigned int cmd) 952 { 953 954 switch (cmd) { 955 case 4: 956 t->t_stateflags &= ~TS_INSERT; 957 break; 958 default: 959 teken_printf("Unknown reset mode: %u\n", cmd); 960 } 961 } 962 963 static void 964 teken_subr_do_resize(teken_t *t) 965 { 966 967 t->t_scrollreg.ts_begin = 0; 968 t->t_scrollreg.ts_end = t->t_winsize.tp_row; 969 t->t_originreg = t->t_scrollreg; 970 } 971 972 static void 973 teken_subr_do_reset(teken_t *t) 974 { 975 976 t->t_curattr = t->t_defattr; 977 t->t_cursor.tp_row = t->t_cursor.tp_col = 0; 978 t->t_scrollreg.ts_begin = 0; 979 t->t_scrollreg.ts_end = t->t_winsize.tp_row; 980 t->t_originreg = t->t_scrollreg; 981 t->t_stateflags &= TS_8BIT|TS_CONS25; 982 t->t_stateflags |= TS_AUTOWRAP; 983 984 t->t_scs[0] = teken_scs_us_ascii; 985 t->t_scs[1] = teken_scs_us_ascii; 986 t->t_curscs = 0; 987 988 teken_subr_save_cursor(t); 989 teken_tab_default(t); 990 } 991 992 static void 993 teken_subr_reset_to_initial_state(teken_t *t) 994 { 995 996 teken_subr_do_reset(t); 997 teken_subr_erase_display(t, 2); 998 teken_funcs_param(t, TP_SHOWCURSOR, 1); 999 teken_funcs_cursor(t); 1000 } 1001 1002 static void 1003 teken_subr_restore_cursor(teken_t *t) 1004 { 1005 1006 t->t_cursor = t->t_saved_cursor; 1007 t->t_curattr = t->t_saved_curattr; 1008 t->t_scs[t->t_curscs] = t->t_saved_curscs; 1009 t->t_stateflags &= ~TS_WRAPPED; 1010 1011 /* Get out of origin mode when the cursor is moved outside. */ 1012 if (t->t_cursor.tp_row < t->t_originreg.ts_begin || 1013 t->t_cursor.tp_row >= t->t_originreg.ts_end) { 1014 t->t_stateflags &= ~TS_ORIGIN; 1015 t->t_originreg.ts_begin = 0; 1016 t->t_originreg.ts_end = t->t_winsize.tp_row; 1017 } 1018 1019 teken_funcs_cursor(t); 1020 } 1021 1022 static void 1023 teken_subr_reverse_index(teken_t *t) 1024 { 1025 1026 if (t->t_cursor.tp_row > t->t_scrollreg.ts_begin) { 1027 t->t_cursor.tp_row--; 1028 t->t_stateflags &= ~TS_WRAPPED; 1029 teken_funcs_cursor(t); 1030 } else { 1031 teken_subr_do_scroll(t, -1); 1032 } 1033 } 1034 1035 static void 1036 teken_subr_save_cursor(teken_t *t) 1037 { 1038 1039 t->t_saved_cursor = t->t_cursor; 1040 t->t_saved_curattr = t->t_curattr; 1041 t->t_saved_curscs = t->t_scs[t->t_curscs]; 1042 } 1043 1044 static void 1045 teken_subr_secondary_device_attributes(teken_t *t, unsigned int request) 1046 { 1047 1048 if (request == 0) { 1049 const char response[] = "\x1B[>0;10;0c"; 1050 teken_funcs_respond(t, response, sizeof response - 1); 1051 } else { 1052 teken_printf("Unknown DA2\n"); 1053 } 1054 } 1055 1056 static void 1057 teken_subr_set_dec_mode(teken_t *t, unsigned int cmd) 1058 { 1059 1060 switch (cmd) { 1061 case 1: /* Cursor keys mode. */ 1062 t->t_stateflags |= TS_CURSORKEYS; 1063 break; 1064 case 2: /* DECANM: ANSI/VT52 mode. */ 1065 teken_printf("DECSET VT52\n"); 1066 break; 1067 case 3: /* 132 column mode. */ 1068 teken_funcs_param(t, TP_132COLS, 1); 1069 teken_subr_reset_to_initial_state(t); 1070 break; 1071 case 5: /* Inverse video. */ 1072 teken_printf("DECSET inverse video\n"); 1073 break; 1074 case 6: /* Origin mode. */ 1075 t->t_stateflags |= TS_ORIGIN; 1076 t->t_originreg = t->t_scrollreg; 1077 t->t_cursor.tp_row = t->t_scrollreg.ts_begin; 1078 t->t_cursor.tp_col = 0; 1079 t->t_stateflags &= ~TS_WRAPPED; 1080 teken_funcs_cursor(t); 1081 break; 1082 case 7: /* Autowrap mode. */ 1083 t->t_stateflags |= TS_AUTOWRAP; 1084 break; 1085 case 8: /* Autorepeat mode. */ 1086 teken_funcs_param(t, TP_AUTOREPEAT, 1); 1087 break; 1088 case 25: /* Display cursor. */ 1089 teken_funcs_param(t, TP_SHOWCURSOR, 1); 1090 break; 1091 case 40: /* Allow 132 columns. */ 1092 teken_printf("DECSET allow 132\n"); 1093 break; 1094 case 45: /* Enable reverse wraparound. */ 1095 teken_printf("DECSET reverse wraparound\n"); 1096 break; 1097 case 47: /* Switch to alternate buffer. */ 1098 teken_printf("Switch away from alternate buffer\n"); 1099 break; 1100 case 1000: /* Mouse input. */ 1101 teken_funcs_param(t, TP_MOUSE, 1); 1102 break; 1103 default: 1104 teken_printf("Unknown DECSET: %u\n", cmd); 1105 } 1106 } 1107 1108 static void 1109 teken_subr_set_mode(teken_t *t, unsigned int cmd) 1110 { 1111 1112 switch (cmd) { 1113 case 4: 1114 teken_printf("Insert mode\n"); 1115 t->t_stateflags |= TS_INSERT; 1116 break; 1117 default: 1118 teken_printf("Unknown set mode: %u\n", cmd); 1119 } 1120 } 1121 1122 static void 1123 teken_subr_set_graphic_rendition(teken_t *t, unsigned int ncmds, 1124 unsigned int cmds[]) 1125 { 1126 unsigned int i, n; 1127 1128 /* No attributes means reset. */ 1129 if (ncmds == 0) { 1130 t->t_curattr = t->t_defattr; 1131 return; 1132 } 1133 1134 for (i = 0; i < ncmds; i++) { 1135 n = cmds[i]; 1136 1137 switch (n) { 1138 case 0: /* Reset. */ 1139 t->t_curattr = t->t_defattr; 1140 break; 1141 case 1: /* Bold. */ 1142 t->t_curattr.ta_format |= TF_BOLD; 1143 break; 1144 case 4: /* Underline. */ 1145 t->t_curattr.ta_format |= TF_UNDERLINE; 1146 break; 1147 case 5: /* Blink. */ 1148 t->t_curattr.ta_format |= TF_BLINK; 1149 break; 1150 case 7: /* Reverse. */ 1151 t->t_curattr.ta_format |= TF_REVERSE; 1152 break; 1153 case 22: /* Remove bold. */ 1154 t->t_curattr.ta_format &= ~TF_BOLD; 1155 break; 1156 case 24: /* Remove underline. */ 1157 t->t_curattr.ta_format &= ~TF_UNDERLINE; 1158 break; 1159 case 25: /* Remove blink. */ 1160 t->t_curattr.ta_format &= ~TF_BLINK; 1161 break; 1162 case 27: /* Remove reverse. */ 1163 t->t_curattr.ta_format &= ~TF_REVERSE; 1164 break; 1165 case 30: /* Set foreground color: black */ 1166 case 31: /* Set foreground color: red */ 1167 case 32: /* Set foreground color: green */ 1168 case 33: /* Set foreground color: brown */ 1169 case 34: /* Set foreground color: blue */ 1170 case 35: /* Set foreground color: magenta */ 1171 case 36: /* Set foreground color: cyan */ 1172 case 37: /* Set foreground color: white */ 1173 t->t_curattr.ta_fgcolor = n - 30; 1174 break; 1175 case 38: /* Set foreground color: 256 color mode */ 1176 if (i + 2 >= ncmds || cmds[i + 1] != 5) 1177 continue; 1178 t->t_curattr.ta_fgcolor = cmds[i + 2]; 1179 i += 2; 1180 break; 1181 case 39: /* Set default foreground color. */ 1182 t->t_curattr.ta_fgcolor = t->t_defattr.ta_fgcolor; 1183 break; 1184 case 40: /* Set background color: black */ 1185 case 41: /* Set background color: red */ 1186 case 42: /* Set background color: green */ 1187 case 43: /* Set background color: brown */ 1188 case 44: /* Set background color: blue */ 1189 case 45: /* Set background color: magenta */ 1190 case 46: /* Set background color: cyan */ 1191 case 47: /* Set background color: white */ 1192 t->t_curattr.ta_bgcolor = n - 40; 1193 break; 1194 case 48: /* Set background color: 256 color mode */ 1195 if (i + 2 >= ncmds || cmds[i + 1] != 5) 1196 continue; 1197 t->t_curattr.ta_bgcolor = cmds[i + 2]; 1198 i += 2; 1199 break; 1200 case 49: /* Set default background color. */ 1201 t->t_curattr.ta_bgcolor = t->t_defattr.ta_bgcolor; 1202 break; 1203 case 90: /* Set bright foreground color: black */ 1204 case 91: /* Set bright foreground color: red */ 1205 case 92: /* Set bright foreground color: green */ 1206 case 93: /* Set bright foreground color: brown */ 1207 case 94: /* Set bright foreground color: blue */ 1208 case 95: /* Set bright foreground color: magenta */ 1209 case 96: /* Set bright foreground color: cyan */ 1210 case 97: /* Set bright foreground color: white */ 1211 t->t_curattr.ta_fgcolor = n - 90 + 8; 1212 break; 1213 case 100: /* Set bright background color: black */ 1214 case 101: /* Set bright background color: red */ 1215 case 102: /* Set bright background color: green */ 1216 case 103: /* Set bright background color: brown */ 1217 case 104: /* Set bright background color: blue */ 1218 case 105: /* Set bright background color: magenta */ 1219 case 106: /* Set bright background color: cyan */ 1220 case 107: /* Set bright background color: white */ 1221 t->t_curattr.ta_bgcolor = n - 100 + 8; 1222 break; 1223 default: 1224 teken_printf("unsupported attribute %u\n", n); 1225 } 1226 } 1227 } 1228 1229 static void 1230 teken_subr_set_top_and_bottom_margins(teken_t *t, unsigned int top, 1231 unsigned int bottom) 1232 { 1233 1234 /* Adjust top row number. */ 1235 if (top > 0) 1236 top--; 1237 /* Adjust bottom row number. */ 1238 if (bottom == 0 || bottom > t->t_winsize.tp_row) 1239 bottom = t->t_winsize.tp_row; 1240 1241 /* Invalid arguments. */ 1242 if (top >= bottom - 1) { 1243 top = 0; 1244 bottom = t->t_winsize.tp_row; 1245 } 1246 1247 /* Apply scrolling region. */ 1248 t->t_scrollreg.ts_begin = top; 1249 t->t_scrollreg.ts_end = bottom; 1250 if (t->t_stateflags & TS_ORIGIN) 1251 t->t_originreg = t->t_scrollreg; 1252 1253 /* Home cursor to the top left of the scrolling region. */ 1254 t->t_cursor.tp_row = t->t_originreg.ts_begin; 1255 t->t_cursor.tp_col = 0; 1256 t->t_stateflags &= ~TS_WRAPPED; 1257 teken_funcs_cursor(t); 1258 } 1259 1260 static void 1261 teken_subr_single_height_double_width_line(teken_t *t __unused) 1262 { 1263 1264 teken_printf("single height double width???\n"); 1265 } 1266 1267 static void 1268 teken_subr_single_height_single_width_line(teken_t *t __unused) 1269 { 1270 1271 teken_printf("single height single width???\n"); 1272 } 1273 1274 static void 1275 teken_subr_string_terminator(teken_t *t __unused) 1276 { 1277 1278 /* 1279 * Strings are already terminated in teken_input_char() when ^[ 1280 * is inserted. 1281 */ 1282 } 1283 1284 static void 1285 teken_subr_tab_clear(teken_t *t, unsigned int cmd) 1286 { 1287 1288 switch (cmd) { 1289 case 0: 1290 teken_tab_clear(t, t->t_cursor.tp_col); 1291 break; 1292 case 3: 1293 memset(&t->t_tabstops, 0, T_NUMCOL / 8); 1294 break; 1295 } 1296 } 1297 1298 static void 1299 teken_subr_vertical_position_absolute(teken_t *t, unsigned int row) 1300 { 1301 1302 row = row - 1 + t->t_originreg.ts_begin; 1303 t->t_cursor.tp_row = row < t->t_originreg.ts_end ? 1304 row : t->t_originreg.ts_end - 1; 1305 1306 t->t_stateflags &= ~TS_WRAPPED; 1307 teken_funcs_cursor(t); 1308 } 1309