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indent: Avoid using values of pointers that refer to deallocated space.
[freebsd-src.git] / sys / teken / teken_subr.h
blobd458f2a6fa9eeaa33feabca169a68c1a52d38491
1 /*-
2 * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 static void teken_subr_cursor_up(teken_t *, unsigned int);
30 static void teken_subr_erase_line(teken_t *, unsigned int);
31 static void teken_subr_regular_character(teken_t *, teken_char_t);
32 static void teken_subr_reset_to_initial_state(teken_t *);
33 static void teken_subr_save_cursor(teken_t *);
34
35 static inline int
36 teken_tab_isset(teken_t *t, unsigned int col)
37 {
38 unsigned int b, o;
39
40 if (col >= T_NUMCOL)
41 return ((col % 8) == 0);
42
43 b = col / (sizeof(unsigned int) * 8);
44 o = col % (sizeof(unsigned int) * 8);
45
46 return (t->t_tabstops[b] & (1 << o));
47 }
48
49 static inline void
50 teken_tab_clear(teken_t *t, unsigned int col)
51 {
52 unsigned int b, o;
53
54 if (col >= T_NUMCOL)
55 return;
56
57 b = col / (sizeof(unsigned int) * 8);
58 o = col % (sizeof(unsigned int) * 8);
59
60 t->t_tabstops[b] &= ~(1 << o);
61 }
62
63 static inline void
64 teken_tab_set(teken_t *t, unsigned int col)
65 {
66 unsigned int b, o;
67
68 if (col >= T_NUMCOL)
69 return;
70
71 b = col / (sizeof(unsigned int) * 8);
72 o = col % (sizeof(unsigned int) * 8);
73
74 t->t_tabstops[b] |= 1 << o;
75 }
76
77 static void
78 teken_tab_default(teken_t *t)
79 {
80 unsigned int i;
81
82 memset(&t->t_tabstops, 0, T_NUMCOL / 8);
83
84 for (i = 8; i < T_NUMCOL; i += 8)
85 teken_tab_set(t, i);
86 }
87
88 static void
89 teken_subr_do_scroll(teken_t *t, int amount)
90 {
91 teken_rect_t tr;
92 teken_pos_t tp;
93
94 teken_assert(t->t_cursor.tp_row <= t->t_winsize.tp_row);
95 teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row);
96 teken_assert(amount != 0);
97
98 /* Copy existing data 1 line up. */
99 if (amount > 0) {
100 /* Scroll down. */
101
102 /* Copy existing data up. */
103 if (t->t_scrollreg.ts_begin + amount < t->t_scrollreg.ts_end) {
104 tr.tr_begin.tp_row = t->t_scrollreg.ts_begin + amount;
105 tr.tr_begin.tp_col = 0;
106 tr.tr_end.tp_row = t->t_scrollreg.ts_end;
107 tr.tr_end.tp_col = t->t_winsize.tp_col;
108 tp.tp_row = t->t_scrollreg.ts_begin;
109 tp.tp_col = 0;
110 teken_funcs_copy(t, &tr, &tp);
111
112 tr.tr_begin.tp_row = t->t_scrollreg.ts_end - amount;
113 } else {
114 tr.tr_begin.tp_row = t->t_scrollreg.ts_begin;
115 }
116
117 /* Clear the last lines. */
118 tr.tr_begin.tp_col = 0;
119 tr.tr_end.tp_row = t->t_scrollreg.ts_end;
120 tr.tr_end.tp_col = t->t_winsize.tp_col;
121 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
122 } else {
123 /* Scroll up. */
124 amount = -amount;
125
126 /* Copy existing data down. */
127 if (t->t_scrollreg.ts_begin + amount < t->t_scrollreg.ts_end) {
128 tr.tr_begin.tp_row = t->t_scrollreg.ts_begin;
129 tr.tr_begin.tp_col = 0;
130 tr.tr_end.tp_row = t->t_scrollreg.ts_end - amount;
131 tr.tr_end.tp_col = t->t_winsize.tp_col;
132 tp.tp_row = t->t_scrollreg.ts_begin + amount;
133 tp.tp_col = 0;
134 teken_funcs_copy(t, &tr, &tp);
135
136 tr.tr_end.tp_row = t->t_scrollreg.ts_begin + amount;
137 } else {
138 tr.tr_end.tp_row = t->t_scrollreg.ts_end;
139 }
140
141 /* Clear the first lines. */
142 tr.tr_begin.tp_row = t->t_scrollreg.ts_begin;
143 tr.tr_begin.tp_col = 0;
144 tr.tr_end.tp_col = t->t_winsize.tp_col;
145 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
146 }
147 }
148
149 static ssize_t
150 teken_subr_do_cpr(teken_t *t, unsigned int cmd, char response[16])
151 {
152
153 switch (cmd) {
154 case 5: /* Operating status. */
155 strcpy(response, "0n");
156 return (2);
157 case 6: { /* Cursor position. */
158 int len;
159
160 len = snprintf(response, 16, "%u;%uR",
161 (t->t_cursor.tp_row - t->t_originreg.ts_begin) + 1,
162 t->t_cursor.tp_col + 1);
163
164 if (len >= 16)
165 return (-1);
166 return (len);
167 }
168 case 15: /* Printer status. */
169 strcpy(response, "13n");
170 return (3);
171 case 25: /* UDK status. */
172 strcpy(response, "20n");
173 return (3);
174 case 26: /* Keyboard status. */
175 strcpy(response, "27;1n");
176 return (5);
177 default:
178 teken_printf("Unknown DSR\n");
179 return (-1);
180 }
181 }
182
183 static void
184 teken_subr_alignment_test(teken_t *t)
185 {
186 teken_rect_t tr;
187
188 t->t_cursor.tp_row = t->t_cursor.tp_col = 0;
189 t->t_scrollreg.ts_begin = 0;
190 t->t_scrollreg.ts_end = t->t_winsize.tp_row;
191 t->t_originreg = t->t_scrollreg;
192 t->t_stateflags &= ~(TS_WRAPPED|TS_ORIGIN);
193 teken_funcs_cursor(t);
194
195 tr.tr_begin.tp_row = 0;
196 tr.tr_begin.tp_col = 0;
197 tr.tr_end = t->t_winsize;
198 teken_funcs_fill(t, &tr, 'E', &t->t_defattr);
199 }
200
201 static void
202 teken_subr_backspace(teken_t *t)
203 {
204
205 if (t->t_stateflags & TS_CONS25) {
206 if (t->t_cursor.tp_col == 0) {
207 if (t->t_cursor.tp_row == t->t_originreg.ts_begin)
208 return;
209 t->t_cursor.tp_row--;
210 t->t_cursor.tp_col = t->t_winsize.tp_col - 1;
211 } else {
212 t->t_cursor.tp_col--;
213 }
214 } else {
215 if (t->t_cursor.tp_col == 0)
216 return;
217
218 t->t_cursor.tp_col--;
219 t->t_stateflags &= ~TS_WRAPPED;
220 }
221
222 teken_funcs_cursor(t);
223 }
224
225 static void
226 teken_subr_bell(teken_t *t)
227 {
228
229 teken_funcs_bell(t);
230 }
231
232 static void
233 teken_subr_carriage_return(teken_t *t)
234 {
235
236 t->t_cursor.tp_col = 0;
237 t->t_stateflags &= ~TS_WRAPPED;
238 teken_funcs_cursor(t);
239 }
240
241 static void
242 teken_subr_cursor_backward(teken_t *t, unsigned int ncols)
243 {
244
245 if (ncols > t->t_cursor.tp_col)
246 t->t_cursor.tp_col = 0;
247 else
248 t->t_cursor.tp_col -= ncols;
249 t->t_stateflags &= ~TS_WRAPPED;
250 teken_funcs_cursor(t);
251 }
252
253 static void
254 teken_subr_cursor_backward_tabulation(teken_t *t, unsigned int ntabs)
255 {
256
257 do {
258 /* Stop when we've reached the beginning of the line. */
259 if (t->t_cursor.tp_col == 0)
260 break;
261
262 t->t_cursor.tp_col--;
263
264 /* Tab marker set. */
265 if (teken_tab_isset(t, t->t_cursor.tp_col))
266 ntabs--;
267 } while (ntabs > 0);
268
269 teken_funcs_cursor(t);
270 }
271
272 static void
273 teken_subr_cursor_down(teken_t *t, unsigned int nrows)
274 {
275
276 if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end)
277 t->t_cursor.tp_row = t->t_scrollreg.ts_end - 1;
278 else
279 t->t_cursor.tp_row += nrows;
280 t->t_stateflags &= ~TS_WRAPPED;
281 teken_funcs_cursor(t);
282 }
283
284 static void
285 teken_subr_cursor_forward(teken_t *t, unsigned int ncols)
286 {
287
288 if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col)
289 t->t_cursor.tp_col = t->t_winsize.tp_col - 1;
290 else
291 t->t_cursor.tp_col += ncols;
292 t->t_stateflags &= ~TS_WRAPPED;
293 teken_funcs_cursor(t);
294 }
295
296 static void
297 teken_subr_cursor_forward_tabulation(teken_t *t, unsigned int ntabs)
298 {
299
300 do {
301 /* Stop when we've reached the end of the line. */
302 if (t->t_cursor.tp_col == t->t_winsize.tp_col - 1)
303 break;
304
305 t->t_cursor.tp_col++;
306
307 /* Tab marker set. */
308 if (teken_tab_isset(t, t->t_cursor.tp_col))
309 ntabs--;
310 } while (ntabs > 0);
311
312 teken_funcs_cursor(t);
313 }
314
315 static void
316 teken_subr_cursor_next_line(teken_t *t, unsigned int ncols)
317 {
318
319 t->t_cursor.tp_col = 0;
320 teken_subr_cursor_down(t, ncols);
321 }
322
323 static void
324 teken_subr_cursor_position(teken_t *t, unsigned int row, unsigned int col)
325 {
326
327 row = row - 1 + t->t_originreg.ts_begin;
328 t->t_cursor.tp_row = row < t->t_originreg.ts_end ?
329 row : t->t_originreg.ts_end - 1;
330
331 col--;
332 t->t_cursor.tp_col = col < t->t_winsize.tp_col ?
333 col : t->t_winsize.tp_col - 1;
334
335 t->t_stateflags &= ~TS_WRAPPED;
336 teken_funcs_cursor(t);
337 }
338
339 static void
340 teken_subr_cursor_position_report(teken_t *t, unsigned int cmd)
341 {
342 char response[18] = "\x1B[";
343 ssize_t len;
344
345 len = teken_subr_do_cpr(t, cmd, response + 2);
346 if (len < 0)
347 return;
348
349 teken_funcs_respond(t, response, len + 2);
350 }
351
352 static void
353 teken_subr_cursor_previous_line(teken_t *t, unsigned int ncols)
354 {
355
356 t->t_cursor.tp_col = 0;
357 teken_subr_cursor_up(t, ncols);
358 }
359
360 static void
361 teken_subr_cursor_up(teken_t *t, unsigned int nrows)
362 {
363
364 if (t->t_scrollreg.ts_begin + nrows >= t->t_cursor.tp_row)
365 t->t_cursor.tp_row = t->t_scrollreg.ts_begin;
366 else
367 t->t_cursor.tp_row -= nrows;
368 t->t_stateflags &= ~TS_WRAPPED;
369 teken_funcs_cursor(t);
370 }
371
372 static void
373 teken_subr_delete_character(teken_t *t, unsigned int ncols)
374 {
375 teken_rect_t tr;
376
377 tr.tr_begin.tp_row = t->t_cursor.tp_row;
378 tr.tr_end.tp_row = t->t_cursor.tp_row + 1;
379 tr.tr_end.tp_col = t->t_winsize.tp_col;
380
381 if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) {
382 tr.tr_begin.tp_col = t->t_cursor.tp_col;
383 } else {
384 /* Copy characters to the left. */
385 tr.tr_begin.tp_col = t->t_cursor.tp_col + ncols;
386 teken_funcs_copy(t, &tr, &t->t_cursor);
387
388 tr.tr_begin.tp_col = t->t_winsize.tp_col - ncols;
389 }
390
391 /* Blank trailing columns. */
392 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
393 }
394
395 static void
396 teken_subr_delete_line(teken_t *t, unsigned int nrows)
397 {
398 teken_rect_t tr;
399
400 /* Ignore if outside scrolling region. */
401 if (t->t_cursor.tp_row < t->t_scrollreg.ts_begin ||
402 t->t_cursor.tp_row >= t->t_scrollreg.ts_end)
403 return;
404
405 tr.tr_begin.tp_col = 0;
406 tr.tr_end.tp_row = t->t_scrollreg.ts_end;
407 tr.tr_end.tp_col = t->t_winsize.tp_col;
408
409 if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) {
410 tr.tr_begin.tp_row = t->t_cursor.tp_row;
411 } else {
412 teken_pos_t tp;
413
414 /* Copy rows up. */
415 tr.tr_begin.tp_row = t->t_cursor.tp_row + nrows;
416 tp.tp_row = t->t_cursor.tp_row;
417 tp.tp_col = 0;
418 teken_funcs_copy(t, &tr, &tp);
419
420 tr.tr_begin.tp_row = t->t_scrollreg.ts_end - nrows;
421 }
422
423 /* Blank trailing rows. */
424 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
425 }
426
427 static void
428 teken_subr_device_control_string(teken_t *t)
429 {
430
431 teken_printf("Unsupported device control string\n");
432 t->t_stateflags |= TS_INSTRING;
433 }
434
435 static void
436 teken_subr_device_status_report(teken_t *t, unsigned int cmd)
437 {
438 char response[19] = "\x1B[?";
439 ssize_t len;
440
441 len = teken_subr_do_cpr(t, cmd, response + 3);
442 if (len < 0)
443 return;
444
445 teken_funcs_respond(t, response, len + 3);
446 }
447
448 static void
449 teken_subr_double_height_double_width_line_top(teken_t *t __unused)
450 {
451
452 teken_printf("double height double width top\n");
453 }
454
455 static void
456 teken_subr_double_height_double_width_line_bottom(teken_t *t __unused)
457 {
458
459 teken_printf("double height double width bottom\n");
460 }
461
462 static void
463 teken_subr_erase_character(teken_t *t, unsigned int ncols)
464 {
465 teken_rect_t tr;
466
467 tr.tr_begin = t->t_cursor;
468 tr.tr_end.tp_row = t->t_cursor.tp_row + 1;
469
470 if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col)
471 tr.tr_end.tp_col = t->t_winsize.tp_col;
472 else
473 tr.tr_end.tp_col = t->t_cursor.tp_col + ncols;
474
475 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
476 }
477
478 static void
479 teken_subr_erase_display(teken_t *t, unsigned int mode)
480 {
481 teken_rect_t r;
482
483 r.tr_begin.tp_col = 0;
484 r.tr_end.tp_col = t->t_winsize.tp_col;
485
486 switch (mode) {
487 case 1: /* Erase from the top to the cursor. */
488 teken_subr_erase_line(t, 1);
489
490 /* Erase lines above. */
491 if (t->t_cursor.tp_row == 0)
492 return;
493 r.tr_begin.tp_row = 0;
494 r.tr_end.tp_row = t->t_cursor.tp_row;
495 break;
496 case 2: /* Erase entire display. */
497 r.tr_begin.tp_row = 0;
498 r.tr_end.tp_row = t->t_winsize.tp_row;
499 break;
500 default: /* Erase from cursor to the bottom. */
501 teken_subr_erase_line(t, 0);
502
503 /* Erase lines below. */
504 if (t->t_cursor.tp_row == t->t_winsize.tp_row - 1)
505 return;
506 r.tr_begin.tp_row = t->t_cursor.tp_row + 1;
507 r.tr_end.tp_row = t->t_winsize.tp_row;
508 break;
509 }
510
511 teken_funcs_fill(t, &r, BLANK, &t->t_curattr);
512 }
513
514 static void
515 teken_subr_erase_line(teken_t *t, unsigned int mode)
516 {
517 teken_rect_t r;
518
519 r.tr_begin.tp_row = t->t_cursor.tp_row;
520 r.tr_end.tp_row = t->t_cursor.tp_row + 1;
521
522 switch (mode) {
523 case 1: /* Erase from the beginning of the line to the cursor. */
524 r.tr_begin.tp_col = 0;
525 r.tr_end.tp_col = t->t_cursor.tp_col + 1;
526 break;
527 case 2: /* Erase entire line. */
528 r.tr_begin.tp_col = 0;
529 r.tr_end.tp_col = t->t_winsize.tp_col;
530 break;
531 default: /* Erase from cursor to the end of the line. */
532 r.tr_begin.tp_col = t->t_cursor.tp_col;
533 r.tr_end.tp_col = t->t_winsize.tp_col;
534 break;
535 }
536
537 teken_funcs_fill(t, &r, BLANK, &t->t_curattr);
538 }
539
540 static void
541 teken_subr_g0_scs_special_graphics(teken_t *t __unused)
542 {
543
544 t->t_scs[0] = teken_scs_special_graphics;
545 }
546
547 static void
548 teken_subr_g0_scs_uk_national(teken_t *t __unused)
549 {
550
551 t->t_scs[0] = teken_scs_uk_national;
552 }
553
554 static void
555 teken_subr_g0_scs_us_ascii(teken_t *t __unused)
556 {
557
558 t->t_scs[0] = teken_scs_us_ascii;
559 }
560
561 static void
562 teken_subr_g1_scs_special_graphics(teken_t *t __unused)
563 {
564
565 t->t_scs[1] = teken_scs_special_graphics;
566 }
567
568 static void
569 teken_subr_g1_scs_uk_national(teken_t *t __unused)
570 {
571
572 t->t_scs[1] = teken_scs_uk_national;
573 }
574
575 static void
576 teken_subr_g1_scs_us_ascii(teken_t *t __unused)
577 {
578
579 t->t_scs[1] = teken_scs_us_ascii;
580 }
581
582 static void
583 teken_subr_horizontal_position_absolute(teken_t *t, unsigned int col)
584 {
585
586 col--;
587 t->t_cursor.tp_col = col < t->t_winsize.tp_col ?
588 col : t->t_winsize.tp_col - 1;
589
590 t->t_stateflags &= ~TS_WRAPPED;
591 teken_funcs_cursor(t);
592 }
593
594 static void
595 teken_subr_horizontal_tab(teken_t *t)
596 {
597
598 teken_subr_cursor_forward_tabulation(t, 1);
599 }
600
601 static void
602 teken_subr_horizontal_tab_set(teken_t *t)
603 {
604
605 teken_tab_set(t, t->t_cursor.tp_col);
606 }
607
608 static void
609 teken_subr_index(teken_t *t)
610 {
611
612 if (t->t_cursor.tp_row < t->t_scrollreg.ts_end - 1) {
613 t->t_cursor.tp_row++;
614 t->t_stateflags &= ~TS_WRAPPED;
615 teken_funcs_cursor(t);
616 } else {
617 teken_subr_do_scroll(t, 1);
618 }
619 }
620
621 static void
622 teken_subr_insert_character(teken_t *t, unsigned int ncols)
623 {
624 teken_rect_t tr;
625
626 tr.tr_begin = t->t_cursor;
627 tr.tr_end.tp_row = t->t_cursor.tp_row + 1;
628
629 if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) {
630 tr.tr_end.tp_col = t->t_winsize.tp_col;
631 } else {
632 teken_pos_t tp;
633
634 /* Copy characters to the right. */
635 tr.tr_end.tp_col = t->t_winsize.tp_col - ncols;
636 tp.tp_row = t->t_cursor.tp_row;
637 tp.tp_col = t->t_cursor.tp_col + ncols;
638 teken_funcs_copy(t, &tr, &tp);
639
640 tr.tr_end.tp_col = t->t_cursor.tp_col + ncols;
641 }
642
643 /* Blank current location. */
644 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
645 }
646
647 static void
648 teken_subr_insert_line(teken_t *t, unsigned int nrows)
649 {
650 teken_rect_t tr;
651
652 /* Ignore if outside scrolling region. */
653 if (t->t_cursor.tp_row < t->t_scrollreg.ts_begin ||
654 t->t_cursor.tp_row >= t->t_scrollreg.ts_end)
655 return;
656
657 tr.tr_begin.tp_row = t->t_cursor.tp_row;
658 tr.tr_begin.tp_col = 0;
659 tr.tr_end.tp_col = t->t_winsize.tp_col;
660
661 if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) {
662 tr.tr_end.tp_row = t->t_scrollreg.ts_end;
663 } else {
664 teken_pos_t tp;
665
666 /* Copy lines down. */
667 tr.tr_end.tp_row = t->t_scrollreg.ts_end - nrows;
668 tp.tp_row = t->t_cursor.tp_row + nrows;
669 tp.tp_col = 0;
670 teken_funcs_copy(t, &tr, &tp);
671
672 tr.tr_end.tp_row = t->t_cursor.tp_row + nrows;
673 }
674
675 /* Blank current location. */
676 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
677 }
678
679 static void
680 teken_subr_keypad_application_mode(teken_t *t)
681 {
682
683 teken_funcs_param(t, TP_KEYPADAPP, 1);
684 }
685
686 static void
687 teken_subr_keypad_numeric_mode(teken_t *t)
688 {
689
690 teken_funcs_param(t, TP_KEYPADAPP, 0);
691 }
692
693 static void
694 teken_subr_newline(teken_t *t)
695 {
696
697 t->t_cursor.tp_row++;
698
699 if (t->t_cursor.tp_row >= t->t_scrollreg.ts_end) {
700 teken_subr_do_scroll(t, 1);
701 t->t_cursor.tp_row = t->t_scrollreg.ts_end - 1;
702 }
703
704 t->t_stateflags &= ~TS_WRAPPED;
705 teken_funcs_cursor(t);
706 }
707
708 static void
709 teken_subr_newpage(teken_t *t)
710 {
711
712 if (t->t_stateflags & TS_CONS25) {
713 teken_rect_t tr;
714
715 /* Clear screen. */
716 tr.tr_begin.tp_row = t->t_originreg.ts_begin;
717 tr.tr_begin.tp_col = 0;
718 tr.tr_end.tp_row = t->t_originreg.ts_end;
719 tr.tr_end.tp_col = t->t_winsize.tp_col;
720 teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
721
722 /* Cursor at top left. */
723 t->t_cursor.tp_row = t->t_originreg.ts_begin;
724 t->t_cursor.tp_col = 0;
725 t->t_stateflags &= ~TS_WRAPPED;
726 teken_funcs_cursor(t);
727 } else {
728 teken_subr_newline(t);
729 }
730 }
731
732 static void
733 teken_subr_next_line(teken_t *t)
734 {
735
736 t->t_cursor.tp_col = 0;
737 teken_subr_newline(t);
738 }
739
740 static void
741 teken_subr_operating_system_command(teken_t *t)
742 {
743
744 teken_printf("Unsupported operating system command\n");
745 t->t_stateflags |= TS_INSTRING;
746 }
747
748 static void
749 teken_subr_pan_down(teken_t *t, unsigned int nrows)
750 {
751
752 teken_subr_do_scroll(t, (int)nrows);
753 }
754
755 static void
756 teken_subr_pan_up(teken_t *t, unsigned int nrows)
757 {
758
759 teken_subr_do_scroll(t, -(int)nrows);
760 }
761
762 static void
763 teken_subr_primary_device_attributes(teken_t *t, unsigned int request)
764 {
765
766 if (request == 0) {
767 const char response[] = "\x1B[?1;2c";
768
769 teken_funcs_respond(t, response, sizeof response - 1);
770 } else {
771 teken_printf("Unknown DA1\n");
772 }
773 }
774
775 static void
776 teken_subr_do_putchar(teken_t *t, const teken_pos_t *tp, teken_char_t c,
777 int width)
778 {
779
780 if (t->t_stateflags & TS_INSERT &&
781 tp->tp_col < t->t_winsize.tp_col - width) {
782 teken_rect_t ctr;
783 teken_pos_t ctp;
784
785 /* Insert mode. Move existing characters to the right. */
786 ctr.tr_begin = *tp;
787 ctr.tr_end.tp_row = tp->tp_row + 1;
788 ctr.tr_end.tp_col = t->t_winsize.tp_col - width;
789 ctp.tp_row = tp->tp_row;
790 ctp.tp_col = tp->tp_col + width;
791 teken_funcs_copy(t, &ctr, &ctp);
792 }
793
794 teken_funcs_putchar(t, tp, c, &t->t_curattr);
795
796 if (width == 2 && tp->tp_col + 1 < t->t_winsize.tp_col) {
797 teken_pos_t tp2;
798 teken_attr_t attr;
799
800 /* Print second half of CJK fullwidth character. */
801 tp2.tp_row = tp->tp_row;
802 tp2.tp_col = tp->tp_col + 1;
803 attr = t->t_curattr;
804 attr.ta_format |= TF_CJK_RIGHT;
805 teken_funcs_putchar(t, &tp2, c, &attr);
806 }
807 }
808
809 static void
810 teken_subr_regular_character(teken_t *t, teken_char_t c)
811 {
812 int width;
813
814 if (t->t_stateflags & TS_8BIT) {
815 if (!(t->t_stateflags & TS_CONS25) && (c <= 0x1b || c == 0x7f))
816 return;
817 c = teken_scs_process(t, c);
818 width = 1;
819 } else {
820 c = teken_scs_process(t, c);
821 width = teken_wcwidth(c);
822 /* XXX: Don't process zero-width characters yet. */
823 if (width <= 0)
824 return;
825 }
826
827 if (t->t_stateflags & TS_CONS25) {
828 teken_subr_do_putchar(t, &t->t_cursor, c, width);
829 t->t_cursor.tp_col += width;
830
831 if (t->t_cursor.tp_col >= t->t_winsize.tp_col) {
832 if (t->t_cursor.tp_row == t->t_scrollreg.ts_end - 1) {
833 /* Perform scrolling. */
834 teken_subr_do_scroll(t, 1);
835 } else {
836 /* No scrolling needed. */
837 if (t->t_cursor.tp_row <
838 t->t_winsize.tp_row - 1)
839 t->t_cursor.tp_row++;
840 }
841 t->t_cursor.tp_col = 0;
842 }
843 } else if (t->t_stateflags & TS_AUTOWRAP &&
844 ((t->t_stateflags & TS_WRAPPED &&
845 t->t_cursor.tp_col + 1 == t->t_winsize.tp_col) ||
846 t->t_cursor.tp_col + width > t->t_winsize.tp_col)) {
847 teken_pos_t tp;
848
849 /*
850 * Perform line wrapping, if:
851 * - Autowrapping is enabled, and
852 * - We're in the wrapped state at the last column, or
853 * - The character to be printed does not fit anymore.
854 */
855 if (t->t_cursor.tp_row == t->t_scrollreg.ts_end - 1) {
856 /* Perform scrolling. */
857 teken_subr_do_scroll(t, 1);
858 tp.tp_row = t->t_scrollreg.ts_end - 1;
859 } else {
860 /* No scrolling needed. */
861 tp.tp_row = t->t_cursor.tp_row + 1;
862 if (tp.tp_row == t->t_winsize.tp_row) {
863 /*
864 * Corner case: regular character
865 * outside scrolling region, but at the
866 * bottom of the screen.
867 */
868 teken_subr_do_putchar(t, &t->t_cursor,
869 c, width);
870 return;
871 }
872 }
873
874 tp.tp_col = 0;
875 teken_subr_do_putchar(t, &tp, c, width);
876
877 t->t_cursor.tp_row = tp.tp_row;
878 t->t_cursor.tp_col = width;
879 t->t_stateflags &= ~TS_WRAPPED;
880 } else {
881 /* No line wrapping needed. */
882 teken_subr_do_putchar(t, &t->t_cursor, c, width);
883 t->t_cursor.tp_col += width;
884
885 if (t->t_cursor.tp_col >= t->t_winsize.tp_col) {
886 t->t_stateflags |= TS_WRAPPED;
887 t->t_cursor.tp_col = t->t_winsize.tp_col - 1;
888 } else {
889 t->t_stateflags &= ~TS_WRAPPED;
890 }
891 }
892
893 teken_funcs_cursor(t);
894 }
895
896 static void
897 teken_subr_reset_dec_mode(teken_t *t, unsigned int cmd)
898 {
899
900 switch (cmd) {
901 case 1: /* Cursor keys mode. */
902 t->t_stateflags &= ~TS_CURSORKEYS;
903 break;
904 case 2: /* DECANM: ANSI/VT52 mode. */
905 teken_printf("DECRST VT52\n");
906 break;
907 case 3: /* 132 column mode. */
908 teken_funcs_param(t, TP_132COLS, 0);
909 teken_subr_reset_to_initial_state(t);
910 break;
911 case 5: /* Inverse video. */
912 teken_printf("DECRST inverse video\n");
913 break;
914 case 6: /* Origin mode. */
915 t->t_stateflags &= ~TS_ORIGIN;
916 t->t_originreg.ts_begin = 0;
917 t->t_originreg.ts_end = t->t_winsize.tp_row;
918 t->t_cursor.tp_row = t->t_cursor.tp_col = 0;
919 t->t_stateflags &= ~TS_WRAPPED;
920 teken_funcs_cursor(t);
921 break;
922 case 7: /* Autowrap mode. */
923 t->t_stateflags &= ~TS_AUTOWRAP;
924 break;
925 case 8: /* Autorepeat mode. */
926 teken_funcs_param(t, TP_AUTOREPEAT, 0);
927 break;
928 case 25: /* Hide cursor. */
929 teken_funcs_param(t, TP_SHOWCURSOR, 0);
930 break;
931 case 40: /* Disallow 132 columns. */
932 teken_printf("DECRST allow 132\n");
933 break;
934 case 45: /* Disable reverse wraparound. */
935 teken_printf("DECRST reverse wraparound\n");
936 break;
937 case 47: /* Switch to alternate buffer. */
938 teken_printf("Switch to alternate buffer\n");
939 break;
940 case 1000: /* Mouse input. */
941 teken_funcs_param(t, TP_MOUSE, 0);
942 break;
943 default:
944 teken_printf("Unknown DECRST: %u\n", cmd);
945 }
946 }
947
948 static void
949 teken_subr_reset_mode(teken_t *t, unsigned int cmd)
950 {
951
952 switch (cmd) {
953 case 4:
954 t->t_stateflags &= ~TS_INSERT;
955 break;
956 default:
957 teken_printf("Unknown reset mode: %u\n", cmd);
958 }
959 }
960
961 static void
962 teken_subr_do_resize(teken_t *t)
963 {
964
965 t->t_scrollreg.ts_begin = 0;
966 t->t_scrollreg.ts_end = t->t_winsize.tp_row;
967 t->t_originreg = t->t_scrollreg;
968 }
969
970 static void
971 teken_subr_do_reset(teken_t *t)
972 {
973
974 t->t_curattr = t->t_defattr;
975 t->t_cursor.tp_row = t->t_cursor.tp_col = 0;
976 t->t_scrollreg.ts_begin = 0;
977 t->t_scrollreg.ts_end = t->t_winsize.tp_row;
978 t->t_originreg = t->t_scrollreg;
979 t->t_stateflags &= TS_8BIT|TS_CONS25;
980 t->t_stateflags |= TS_AUTOWRAP;
981
982 t->t_scs[0] = teken_scs_us_ascii;
983 t->t_scs[1] = teken_scs_us_ascii;
984 t->t_curscs = 0;
985
986 teken_subr_save_cursor(t);
987 teken_tab_default(t);
988 }
989
990 static void
991 teken_subr_reset_to_initial_state(teken_t *t)
992 {
993
994 teken_subr_do_reset(t);
995 teken_subr_erase_display(t, 2);
996 teken_funcs_param(t, TP_SHOWCURSOR, 1);
997 teken_funcs_cursor(t);
998 }
999
1000 static void
1001 teken_subr_restore_cursor(teken_t *t)
1002 {
1003
1004 t->t_cursor = t->t_saved_cursor;
1005 t->t_curattr = t->t_saved_curattr;
1006 t->t_scs[t->t_curscs] = t->t_saved_curscs;
1007 t->t_stateflags &= ~TS_WRAPPED;
1008
1009 /* Get out of origin mode when the cursor is moved outside. */
1010 if (t->t_cursor.tp_row < t->t_originreg.ts_begin ||
1011 t->t_cursor.tp_row >= t->t_originreg.ts_end) {
1012 t->t_stateflags &= ~TS_ORIGIN;
1013 t->t_originreg.ts_begin = 0;
1014 t->t_originreg.ts_end = t->t_winsize.tp_row;
1015 }
1016
1017 teken_funcs_cursor(t);
1018 }
1019
1020 static void
1021 teken_subr_reverse_index(teken_t *t)
1022 {
1023
1024 if (t->t_cursor.tp_row > t->t_scrollreg.ts_begin) {
1025 t->t_cursor.tp_row--;
1026 t->t_stateflags &= ~TS_WRAPPED;
1027 teken_funcs_cursor(t);
1028 } else {
1029 teken_subr_do_scroll(t, -1);
1030 }
1031 }
1032
1033 static void
1034 teken_subr_save_cursor(teken_t *t)
1035 {
1036
1037 t->t_saved_cursor = t->t_cursor;
1038 t->t_saved_curattr = t->t_curattr;
1039 t->t_saved_curscs = t->t_scs[t->t_curscs];
1040 }
1041
1042 static void
1043 teken_subr_secondary_device_attributes(teken_t *t, unsigned int request)
1044 {
1045
1046 if (request == 0) {
1047 const char response[] = "\x1B[>0;10;0c";
1048 teken_funcs_respond(t, response, sizeof response - 1);
1049 } else {
1050 teken_printf("Unknown DA2\n");
1051 }
1052 }
1053
1054 static void
1055 teken_subr_set_dec_mode(teken_t *t, unsigned int cmd)
1056 {
1057
1058 switch (cmd) {
1059 case 1: /* Cursor keys mode. */
1060 t->t_stateflags |= TS_CURSORKEYS;
1061 break;
1062 case 2: /* DECANM: ANSI/VT52 mode. */
1063 teken_printf("DECSET VT52\n");
1064 break;
1065 case 3: /* 132 column mode. */
1066 teken_funcs_param(t, TP_132COLS, 1);
1067 teken_subr_reset_to_initial_state(t);
1068 break;
1069 case 5: /* Inverse video. */
1070 teken_printf("DECSET inverse video\n");
1071 break;
1072 case 6: /* Origin mode. */
1073 t->t_stateflags |= TS_ORIGIN;
1074 t->t_originreg = t->t_scrollreg;
1075 t->t_cursor.tp_row = t->t_scrollreg.ts_begin;
1076 t->t_cursor.tp_col = 0;
1077 t->t_stateflags &= ~TS_WRAPPED;
1078 teken_funcs_cursor(t);
1079 break;
1080 case 7: /* Autowrap mode. */
1081 t->t_stateflags |= TS_AUTOWRAP;
1082 break;
1083 case 8: /* Autorepeat mode. */
1084 teken_funcs_param(t, TP_AUTOREPEAT, 1);
1085 break;
1086 case 25: /* Display cursor. */
1087 teken_funcs_param(t, TP_SHOWCURSOR, 1);
1088 break;
1089 case 40: /* Allow 132 columns. */
1090 teken_printf("DECSET allow 132\n");
1091 break;
1092 case 45: /* Enable reverse wraparound. */
1093 teken_printf("DECSET reverse wraparound\n");
1094 break;
1095 case 47: /* Switch to alternate buffer. */
1096 teken_printf("Switch away from alternate buffer\n");
1097 break;
1098 case 1000: /* Mouse input. */
1099 teken_funcs_param(t, TP_MOUSE, 1);
1100 break;
1101 default:
1102 teken_printf("Unknown DECSET: %u\n", cmd);
1103 }
1104 }
1105
1106 static void
1107 teken_subr_set_mode(teken_t *t, unsigned int cmd)
1108 {
1109
1110 switch (cmd) {
1111 case 4:
1112 teken_printf("Insert mode\n");
1113 t->t_stateflags |= TS_INSERT;
1114 break;
1115 default:
1116 teken_printf("Unknown set mode: %u\n", cmd);
1117 }
1118 }
1119
1120 static void
1121 teken_subr_set_graphic_rendition(teken_t *t, unsigned int ncmds,
1122 unsigned int cmds[])
1123 {
1124 unsigned int i, n;
1125
1126 /* No attributes means reset. */
1127 if (ncmds == 0) {
1128 t->t_curattr = t->t_defattr;
1129 return;
1130 }
1131
1132 for (i = 0; i < ncmds; i++) {
1133 n = cmds[i];
1134
1135 switch (n) {
1136 case 0: /* Reset. */
1137 t->t_curattr = t->t_defattr;
1138 break;
1139 case 1: /* Bold. */
1140 t->t_curattr.ta_format |= TF_BOLD;
1141 break;
1142 case 4: /* Underline. */
1143 t->t_curattr.ta_format |= TF_UNDERLINE;
1144 break;
1145 case 5: /* Blink. */
1146 t->t_curattr.ta_format |= TF_BLINK;
1147 break;
1148 case 7: /* Reverse. */
1149 t->t_curattr.ta_format |= TF_REVERSE;
1150 break;
1151 case 22: /* Remove bold. */
1152 t->t_curattr.ta_format &= ~TF_BOLD;
1153 break;
1154 case 24: /* Remove underline. */
1155 t->t_curattr.ta_format &= ~TF_UNDERLINE;
1156 break;
1157 case 25: /* Remove blink. */
1158 t->t_curattr.ta_format &= ~TF_BLINK;
1159 break;
1160 case 27: /* Remove reverse. */
1161 t->t_curattr.ta_format &= ~TF_REVERSE;
1162 break;
1163 case 30: /* Set foreground color: black */
1164 case 31: /* Set foreground color: red */
1165 case 32: /* Set foreground color: green */
1166 case 33: /* Set foreground color: brown */
1167 case 34: /* Set foreground color: blue */
1168 case 35: /* Set foreground color: magenta */
1169 case 36: /* Set foreground color: cyan */
1170 case 37: /* Set foreground color: white */
1171 t->t_curattr.ta_fgcolor = n - 30;
1172 break;
1173 case 38: /* Set foreground color: 256 color mode */
1174 if (i + 2 >= ncmds || cmds[i + 1] != 5)
1175 continue;
1176 t->t_curattr.ta_fgcolor = cmds[i + 2];
1177 i += 2;
1178 break;
1179 case 39: /* Set default foreground color. */
1180 t->t_curattr.ta_fgcolor = t->t_defattr.ta_fgcolor;
1181 break;
1182 case 40: /* Set background color: black */
1183 case 41: /* Set background color: red */
1184 case 42: /* Set background color: green */
1185 case 43: /* Set background color: brown */
1186 case 44: /* Set background color: blue */
1187 case 45: /* Set background color: magenta */
1188 case 46: /* Set background color: cyan */
1189 case 47: /* Set background color: white */
1190 t->t_curattr.ta_bgcolor = n - 40;
1191 break;
1192 case 48: /* Set background color: 256 color mode */
1193 if (i + 2 >= ncmds || cmds[i + 1] != 5)
1194 continue;
1195 t->t_curattr.ta_bgcolor = cmds[i + 2];
1196 i += 2;
1197 break;
1198 case 49: /* Set default background color. */
1199 t->t_curattr.ta_bgcolor = t->t_defattr.ta_bgcolor;
1200 break;
1201 case 90: /* Set bright foreground color: black */
1202 case 91: /* Set bright foreground color: red */
1203 case 92: /* Set bright foreground color: green */
1204 case 93: /* Set bright foreground color: brown */
1205 case 94: /* Set bright foreground color: blue */
1206 case 95: /* Set bright foreground color: magenta */
1207 case 96: /* Set bright foreground color: cyan */
1208 case 97: /* Set bright foreground color: white */
1209 t->t_curattr.ta_fgcolor = n - 90 + 8;
1210 break;
1211 case 100: /* Set bright background color: black */
1212 case 101: /* Set bright background color: red */
1213 case 102: /* Set bright background color: green */
1214 case 103: /* Set bright background color: brown */
1215 case 104: /* Set bright background color: blue */
1216 case 105: /* Set bright background color: magenta */
1217 case 106: /* Set bright background color: cyan */
1218 case 107: /* Set bright background color: white */
1219 t->t_curattr.ta_bgcolor = n - 100 + 8;
1220 break;
1221 default:
1222 teken_printf("unsupported attribute %u\n", n);
1223 }
1224 }
1225 }
1226
1227 static void
1228 teken_subr_set_top_and_bottom_margins(teken_t *t, unsigned int top,
1229 unsigned int bottom)
1230 {
1231
1232 /* Adjust top row number. */
1233 if (top > 0)
1234 top--;
1235 /* Adjust bottom row number. */
1236 if (bottom == 0 || bottom > t->t_winsize.tp_row)
1237 bottom = t->t_winsize.tp_row;
1238
1239 /* Invalid arguments. */
1240 if (top >= bottom - 1) {
1241 top = 0;
1242 bottom = t->t_winsize.tp_row;
1243 }
1244
1245 /* Apply scrolling region. */
1246 t->t_scrollreg.ts_begin = top;
1247 t->t_scrollreg.ts_end = bottom;
1248 if (t->t_stateflags & TS_ORIGIN)
1249 t->t_originreg = t->t_scrollreg;
1250
1251 /* Home cursor to the top left of the scrolling region. */
1252 t->t_cursor.tp_row = t->t_originreg.ts_begin;
1253 t->t_cursor.tp_col = 0;
1254 t->t_stateflags &= ~TS_WRAPPED;
1255 teken_funcs_cursor(t);
1256 }
1257
1258 static void
1259 teken_subr_single_height_double_width_line(teken_t *t __unused)
1260 {
1261
1262 teken_printf("single height double width???\n");
1263 }
1264
1265 static void
1266 teken_subr_single_height_single_width_line(teken_t *t __unused)
1267 {
1268
1269 teken_printf("single height single width???\n");
1270 }
1271
1272 static void
1273 teken_subr_string_terminator(teken_t *t __unused)
1274 {
1275
1276 /*
1277 * Strings are already terminated in teken_input_char() when ^[
1278 * is inserted.
1279 */
1280 }
1281
1282 static void
1283 teken_subr_tab_clear(teken_t *t, unsigned int cmd)
1284 {
1285
1286 switch (cmd) {
1287 case 0:
1288 teken_tab_clear(t, t->t_cursor.tp_col);
1289 break;
1290 case 3:
1291 memset(&t->t_tabstops, 0, T_NUMCOL / 8);
1292 break;
1293 }
1294 }
1295
1296 static void
1297 teken_subr_vertical_position_absolute(teken_t *t, unsigned int row)
1298 {
1299
1300 row = row - 1 + t->t_originreg.ts_begin;
1301 t->t_cursor.tp_row = row < t->t_originreg.ts_end ?
1302 row : t->t_originreg.ts_end - 1;
1303
1304 t->t_stateflags &= ~TS_WRAPPED;
1305 teken_funcs_cursor(t);
1306 }
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