1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
4  * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
60 #define	TS_8BIT		0x0020	/* UTF-8 disabled. */
80 teken_funcs_bell(const teken_t *t)  in teken_funcs_bell()  argument
83 	teken_assert(t->t_funcs->tf_bell != NULL);  in teken_funcs_bell()
84 	t->t_funcs->tf_bell(t->t_softc);  in teken_funcs_bell()
88 teken_funcs_cursor(const teken_t *t)  in teken_funcs_cursor()  argument
91 	teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);  in teken_funcs_cursor()
92 	teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);  in teken_funcs_cursor()
94 	teken_assert(t->t_funcs->tf_cursor != NULL);  in teken_funcs_cursor()
95 	t->t_funcs->tf_cursor(t->t_softc, &t->t_cursor);  in teken_funcs_cursor()
99 teken_funcs_putchar(const teken_t *t, const teken_pos_t *p, teken_char_t c,  in teken_funcs_putchar()  argument
103 	teken_assert(p->tp_row < t->t_winsize.tp_row);  in teken_funcs_putchar()
104 	teken_assert(p->tp_col < t->t_winsize.tp_col);  in teken_funcs_putchar()
106 	teken_assert(t->t_funcs->tf_putchar != NULL);  in teken_funcs_putchar()
107 	t->t_funcs->tf_putchar(t->t_softc, p, c, a);  in teken_funcs_putchar()
111 teken_funcs_fill(const teken_t *t, const teken_rect_t *r,  in teken_funcs_fill()  argument
115 	teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);  in teken_funcs_fill()
116 	teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);  in teken_funcs_fill()
117 	teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);  in teken_funcs_fill()
118 	teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);  in teken_funcs_fill()
120 	teken_assert(t->t_funcs->tf_fill != NULL);  in teken_funcs_fill()
121 	t->t_funcs->tf_fill(t->t_softc, r, c, a);  in teken_funcs_fill()
125 teken_funcs_copy(const teken_t *t, const teken_rect_t *r, const teken_pos_t *p)  in teken_funcs_copy()  argument
128 	teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);  in teken_funcs_copy()
129 	teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);  in teken_funcs_copy()
130 	teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);  in teken_funcs_copy()
131 	teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);  in teken_funcs_copy()
132 	teken_assert(p->tp_row + (r->tr_end.tp_row - r->tr_begin.tp_row) <= t->t_winsize.tp_row);  in teken_funcs_copy()
133 	teken_assert(p->tp_col + (r->tr_end.tp_col - r->tr_begin.tp_col) <= t->t_winsize.tp_col);  in teken_funcs_copy()
135 	teken_assert(t->t_funcs->tf_copy != NULL);  in teken_funcs_copy()
136 	t->t_funcs->tf_copy(t->t_softc, r, p);  in teken_funcs_copy()
140 teken_funcs_pre_input(const teken_t *t)  in teken_funcs_pre_input()  argument
143 	if (t->t_funcs->tf_pre_input != NULL)  in teken_funcs_pre_input()
144 		t->t_funcs->tf_pre_input(t->t_softc);  in teken_funcs_pre_input()
148 teken_funcs_post_input(const teken_t *t)  in teken_funcs_post_input()  argument
151 	if (t->t_funcs->tf_post_input != NULL)  in teken_funcs_post_input()
152 		t->t_funcs->tf_post_input(t->t_softc);  in teken_funcs_post_input()
156 teken_funcs_param(const teken_t *t, int cmd, unsigned int value)  in teken_funcs_param()  argument
159 	teken_assert(t->t_funcs->tf_param != NULL);  in teken_funcs_param()
160 	t->t_funcs->tf_param(t->t_softc, cmd, value);  in teken_funcs_param()
164 teken_funcs_respond(const teken_t *t, const void *buf, size_t len)  in teken_funcs_respond()  argument
167 	teken_assert(t->t_funcs->tf_respond != NULL);  in teken_funcs_respond()
168 	t->t_funcs->tf_respond(t->t_softc, buf, len);  in teken_funcs_respond()
179 teken_init(teken_t *t, const teken_funcs_t *tf, void *softc)  in teken_init()  argument
183 	t->t_funcs = tf;  in teken_init()
184 	t->t_softc = softc;  in teken_init()
186 	t->t_nextstate = teken_state_init;  in teken_init()
187 	t->t_stateflags = 0;  in teken_init()
188 	t->t_utf8_left = 0;  in teken_init()
190 	t->t_defattr.ta_format = 0;  in teken_init()
191 	t->t_defattr.ta_fgcolor = TC_WHITE;  in teken_init()
192 	t->t_defattr.ta_bgcolor = TC_BLACK;  in teken_init()
193 	teken_subr_do_reset(t);  in teken_init()
195 	teken_set_winsize(t, &tp);  in teken_init()
199 teken_input_char(teken_t *t, teken_char_t c)  in teken_input_char()  argument
207 	if (t->t_stateflags & TS_INSTRING) {  in teken_input_char()
210 			t->t_stateflags &= ~TS_INSTRING;  in teken_input_char()
213 			t->t_stateflags &= ~TS_INSTRING;  in teken_input_char()
224 		teken_subr_bell(t);  in teken_input_char()
227 		teken_subr_backspace(t);  in teken_input_char()
231 		teken_subr_newline(t);  in teken_input_char()
234 		teken_subr_newpage(t);  in teken_input_char()
237 		if (t->t_stateflags & TS_CONS25)  in teken_input_char()
238 			t->t_nextstate(t, c);  in teken_input_char()
240 			t->t_curscs = 1;  in teken_input_char()
243 		if (t->t_stateflags & TS_CONS25)  in teken_input_char()
244 			t->t_nextstate(t, c);  in teken_input_char()
246 			t->t_curscs = 0;  in teken_input_char()
249 		teken_subr_carriage_return(t);  in teken_input_char()
251 	case '\t':  in teken_input_char()
252 		teken_subr_horizontal_tab(t);  in teken_input_char()
255 		t->t_nextstate(t, c);  in teken_input_char()
259 	/* Post-processing assertions. */  in teken_input_char()
260 	teken_assert(t->t_cursor.tp_row >= t->t_originreg.ts_begin);  in teken_input_char()
261 	teken_assert(t->t_cursor.tp_row < t->t_originreg.ts_end);  in teken_input_char()
262 	teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);  in teken_input_char()
263 	teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);  in teken_input_char()
264 	teken_assert(t->t_saved_cursor.tp_row < t->t_winsize.tp_row);  in teken_input_char()
265 	teken_assert(t->t_saved_cursor.tp_col < t->t_winsize.tp_col);  in teken_input_char()
266 	teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row);  in teken_input_char()
267 	teken_assert(t->t_scrollreg.ts_begin < t->t_scrollreg.ts_end);  in teken_input_char()
269 	teken_assert((t->t_originreg.ts_begin == t->t_scrollreg.ts_begin &&  in teken_input_char()
270 	    t->t_originreg.ts_end == t->t_scrollreg.ts_end) ||  in teken_input_char()
271 	    (t->t_originreg.ts_begin == 0 &&  in teken_input_char()
272 	    t->t_originreg.ts_end == t->t_winsize.tp_row));  in teken_input_char()
276 teken_input_byte(teken_t *t, unsigned char c)  in teken_input_byte()  argument
280 	 * UTF-8 handling.  in teken_input_byte()
282 	if ((c & 0x80) == 0x00 || t->t_stateflags & TS_8BIT) {  in teken_input_byte()
283 		/* One-byte sequence. */  in teken_input_byte()
284 		t->t_utf8_left = 0;  in teken_input_byte()
285 		teken_input_char(t, c);  in teken_input_byte()
287 		/* Two-byte sequence. */  in teken_input_byte()
288 		t->t_utf8_left = 1;  in teken_input_byte()
289 		t->t_utf8_partial = c & 0x1f;  in teken_input_byte()
291 		/* Three-byte sequence. */  in teken_input_byte()
292 		t->t_utf8_left = 2;  in teken_input_byte()
293 		t->t_utf8_partial = c & 0x0f;  in teken_input_byte()
295 		/* Four-byte sequence. */  in teken_input_byte()
296 		t->t_utf8_left = 3;  in teken_input_byte()
297 		t->t_utf8_partial = c & 0x07;  in teken_input_byte()
299 		if (t->t_utf8_left == 0)  in teken_input_byte()
301 		t->t_utf8_left--;  in teken_input_byte()
302 		t->t_utf8_partial = (t->t_utf8_partial << 6) | (c & 0x3f);  in teken_input_byte()
303 		if (t->t_utf8_left == 0) {  in teken_input_byte()
304 			teken_printf("Got UTF-8 char %x\n", t->t_utf8_partial);  in teken_input_byte()
305 			teken_input_char(t, t->t_utf8_partial);  in teken_input_byte()
311 teken_input(teken_t *t, const void *buf, size_t len)  in teken_input()  argument
315 	teken_funcs_pre_input(t);  in teken_input()
316 	while (len-- > 0)  in teken_input()
317 		teken_input_byte(t, *c++);  in teken_input()
318 	teken_funcs_post_input(t);  in teken_input()
322 teken_get_cursor(const teken_t *t)  in teken_get_cursor()  argument
325 	return (&t->t_cursor);  in teken_get_cursor()
329 teken_set_cursor(teken_t *t, const teken_pos_t *p)  in teken_set_cursor()  argument
333 	teken_assert(p->tp_row < t->t_winsize.tp_row);  in teken_set_cursor()
334 	teken_assert(p->tp_col < t->t_winsize.tp_col);  in teken_set_cursor()
336 	t->t_cursor = *p;  in teken_set_cursor()
340 teken_get_curattr(const teken_t *t)  in teken_get_curattr()  argument
343 	return (&t->t_curattr);  in teken_get_curattr()
347 teken_set_curattr(teken_t *t, const teken_attr_t *a)  in teken_set_curattr()  argument
350 	t->t_curattr = *a;  in teken_set_curattr()
354 teken_get_defattr(const teken_t *t)  in teken_get_defattr()  argument
357 	return (&t->t_defattr);  in teken_get_defattr()
361 teken_set_defattr(teken_t *t, const teken_attr_t *a)  in teken_set_defattr()  argument
364 	t->t_curattr = t->t_saved_curattr = t->t_defattr = *a;  in teken_set_defattr()
368 teken_get_winsize(const teken_t *t)  in teken_get_winsize()  argument
371 	return (&t->t_winsize);  in teken_get_winsize()
375 teken_trim_cursor_pos(teken_t *t, const teken_pos_t *new)  in teken_trim_cursor_pos()  argument
379 	cur = &t->t_winsize;  in teken_trim_cursor_pos()
381 	if (cur->tp_row < new->tp_row || cur->tp_col < new->tp_col)  in teken_trim_cursor_pos()
383 	if (t->t_cursor.tp_row >= new->tp_row)  in teken_trim_cursor_pos()
384 		t->t_cursor.tp_row = new->tp_row - 1;  in teken_trim_cursor_pos()
385 	if (t->t_cursor.tp_col >= new->tp_col)  in teken_trim_cursor_pos()
386 		t->t_cursor.tp_col = new->tp_col - 1;  in teken_trim_cursor_pos()
390 teken_set_winsize(teken_t *t, const teken_pos_t *p)  in teken_set_winsize()  argument
393 	teken_trim_cursor_pos(t, p);  in teken_set_winsize()
394 	t->t_winsize = *p;  in teken_set_winsize()
395 	teken_subr_do_reset(t);  in teken_set_winsize()
399 teken_set_winsize_noreset(teken_t *t, const teken_pos_t *p)  in teken_set_winsize_noreset()  argument
402 	teken_trim_cursor_pos(t, p);  in teken_set_winsize_noreset()
403 	t->t_winsize = *p;  in teken_set_winsize_noreset()
404 	teken_subr_do_resize(t);  in teken_set_winsize_noreset()
408 teken_set_8bit(teken_t *t)  in teken_set_8bit()  argument
411 	t->t_stateflags |= TS_8BIT;  in teken_set_8bit()
415 teken_set_cons25(teken_t *t)  in teken_set_cons25()  argument
418 	t->t_stateflags |= TS_CONS25;  in teken_set_cons25()
422 teken_set_cons25keys(teken_t *t)  in teken_set_cons25keys()  argument
425 	t->t_stateflags |= TS_CONS25KEYS;  in teken_set_cons25keys()
433 teken_state_switch(teken_t *t, teken_state_t *s)  in teken_state_switch()  argument
436 	t->t_nextstate = s;  in teken_state_switch()
437 	t->t_curnum = 0;  in teken_state_switch()
438 	t->t_stateflags |= TS_FIRSTDIGIT;  in teken_state_switch()
442 teken_state_numbers(teken_t *t, teken_char_t c)  in teken_state_numbers()  argument
445 	teken_assert(t->t_curnum < T_NUMSIZE);  in teken_state_numbers()
448 		if (t->t_stateflags & TS_FIRSTDIGIT) {  in teken_state_numbers()
450 			t->t_stateflags &= ~TS_FIRSTDIGIT;  in teken_state_numbers()
451 			t->t_nums[t->t_curnum] = c - '0';  in teken_state_numbers()
452 		} else if (t->t_nums[t->t_curnum] < UINT_MAX / 100) {  in teken_state_numbers()
463 			t->t_nums[t->t_curnum] =  in teken_state_numbers()
464 			    t->t_nums[t->t_curnum] * 10 + c - '0';  in teken_state_numbers()
468 		if (t->t_stateflags & TS_FIRSTDIGIT)  in teken_state_numbers()
469 			t->t_nums[t->t_curnum] = 0;  in teken_state_numbers()
472 		if (++t->t_curnum == T_NUMSIZE) {  in teken_state_numbers()
473 			teken_state_switch(t, teken_state_init);  in teken_state_numbers()
477 		t->t_stateflags |= TS_FIRSTDIGIT;  in teken_state_numbers()
480 		if (t->t_stateflags & TS_FIRSTDIGIT && t->t_curnum > 0) {  in teken_state_numbers()
482 			t->t_nums[t->t_curnum] = 0;  in teken_state_numbers()
483 			t->t_curnum++;  in teken_state_numbers()
484 		} else if ((t->t_stateflags & TS_FIRSTDIGIT) == 0) {  in teken_state_numbers()
486 			t->t_curnum++;  in teken_state_numbers()
511  * The xterm-256 color map has steps of 0x28 (in the range 0-0xff), except
512  * for the first step which is 0x5f.  Scale to the range 0-6 by dividing
513  * by 0x28 and rounding down.  The range of 0-5 cannot represent the
517  * - if all components are equal, the result is black for (0, 0, 0) and
519  * - subtract the smallest component from all components
520  * - if this gives only one nonzero component, then that is the color
521  * - else if one component is 2 or more larger than the other nonzero one,
523  * - else there are 2 nonzero components.  The color is that of a small
526  *   (DeepSkyBlue4), but we map both to cyan since we can't represent
703 	[TKEY_F7] = "\x1B[S",		[TKEY_F8] = "\x1B[T",
732 teken_get_sequence(const teken_t *t, unsigned int k)  in teken_get_sequence()  argument
736 	if ((t->t_stateflags & (TS_CONS25 | TS_CONS25KEYS)) ==  in teken_get_sequence()
738 		return (NULL);	/* Don't override good kbd(4) strings. */  in teken_get_sequence()
739 	if (t->t_stateflags & TS_CONS25 &&  in teken_get_sequence()
744 	if (t->t_stateflags & TS_CURSORKEYS &&  in teken_get_sequence()