2 * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/cdefs.h>
30 #if defined(__FreeBSD__) && defined(_KERNEL)
31 #include <sys/param.h>
33 #include <sys/systm.h>
34 #define teken_assert(x) MPASS(x)
35 #else /* !(__FreeBSD__ && _KERNEL) */
36 #include <sys/types.h>
41 #define teken_assert(x) assert(x)
42 #endif /* __FreeBSD__ && _KERNEL */
45 #define teken_printf(x,...)
47 /* Private flags for t_stateflags. */
48 #define TS_FIRSTDIGIT 0x0001 /* First numeric digit in escape sequence. */
49 #define TS_INSERT 0x0002 /* Insert mode. */
50 #define TS_AUTOWRAP 0x0004 /* Autowrap. */
51 #define TS_ORIGIN 0x0008 /* Origin mode. */
52 #define TS_WRAPPED 0x0010 /* Next character should be printed on col 0. */
53 #define TS_8BIT 0x0020 /* UTF-8 disabled. */
54 #define TS_CONS25 0x0040 /* cons25 emulation. */
55 #define TS_INSTRING 0x0080 /* Inside string. */
56 #define TS_CURSORKEYS 0x0100 /* Cursor keys mode. */
58 /* Character that blanks a cell. */
62 #include "teken_wcwidth.h"
63 #include "teken_scs.h"
65 static teken_state_t teken_state_init;
72 teken_funcs_bell(teken_t *t)
75 t->t_funcs->tf_bell(t->t_softc);
79 teken_funcs_cursor(teken_t *t)
82 teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);
83 teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);
85 t->t_funcs->tf_cursor(t->t_softc, &t->t_cursor);
89 teken_funcs_putchar(teken_t *t, const teken_pos_t *p, teken_char_t c,
90 const teken_attr_t *a)
93 teken_assert(p->tp_row < t->t_winsize.tp_row);
94 teken_assert(p->tp_col < t->t_winsize.tp_col);
96 t->t_funcs->tf_putchar(t->t_softc, p, c, a);
100 teken_funcs_fill(teken_t *t, const teken_rect_t *r,
101 const teken_char_t c, const teken_attr_t *a)
104 teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);
105 teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);
106 teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);
107 teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);
109 t->t_funcs->tf_fill(t->t_softc, r, c, a);
113 teken_funcs_copy(teken_t *t, const teken_rect_t *r, const teken_pos_t *p)
116 teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);
117 teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);
118 teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);
119 teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);
120 teken_assert(p->tp_row + (r->tr_end.tp_row - r->tr_begin.tp_row) <= t->t_winsize.tp_row);
121 teken_assert(p->tp_col + (r->tr_end.tp_col - r->tr_begin.tp_col) <= t->t_winsize.tp_col);
123 t->t_funcs->tf_copy(t->t_softc, r, p);
127 teken_funcs_param(teken_t *t, int cmd, unsigned int value)
130 t->t_funcs->tf_param(t->t_softc, cmd, value);
134 teken_funcs_respond(teken_t *t, const void *buf, size_t len)
137 t->t_funcs->tf_respond(t->t_softc, buf, len);
140 #include "teken_subr.h"
141 #include "teken_subr_compat.h"
144 * Programming interface.
148 teken_init(teken_t *t, const teken_funcs_t *tf, void *softc)
150 teken_pos_t tp = { .tp_row = 24, .tp_col = 80 };
155 t->t_nextstate = teken_state_init;
159 t->t_defattr.ta_format = 0;
160 t->t_defattr.ta_fgcolor = TC_WHITE;
161 t->t_defattr.ta_bgcolor = TC_BLACK;
162 teken_subr_do_reset(t);
164 teken_set_winsize(t, &tp);
168 teken_input_char(teken_t *t, teken_char_t c)
172 * There is no support for DCS and OSC. Just discard strings
173 * until we receive characters that may indicate string
176 if (t->t_stateflags & TS_INSTRING) {
179 t->t_stateflags &= ~TS_INSTRING;
182 t->t_stateflags &= ~TS_INSTRING;
196 teken_subr_backspace(t);
200 teken_subr_newline(t);
203 teken_subr_newpage(t);
206 if (t->t_stateflags & TS_CONS25)
207 t->t_nextstate(t, c);
212 if (t->t_stateflags & TS_CONS25)
213 t->t_nextstate(t, c);
218 teken_subr_carriage_return(t);
221 teken_subr_horizontal_tab(t);
224 t->t_nextstate(t, c);
228 /* Post-processing assertions. */
229 teken_assert(t->t_cursor.tp_row >= t->t_originreg.ts_begin);
230 teken_assert(t->t_cursor.tp_row < t->t_originreg.ts_end);
231 teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);
232 teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);
233 teken_assert(t->t_saved_cursor.tp_row < t->t_winsize.tp_row);
234 teken_assert(t->t_saved_cursor.tp_col < t->t_winsize.tp_col);
235 teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row);
236 teken_assert(t->t_scrollreg.ts_begin < t->t_scrollreg.ts_end);
237 /* Origin region has to be window size or the same as scrollreg. */
238 teken_assert((t->t_originreg.ts_begin == t->t_scrollreg.ts_begin &&
239 t->t_originreg.ts_end == t->t_scrollreg.ts_end) ||
240 (t->t_originreg.ts_begin == 0 &&
241 t->t_originreg.ts_end == t->t_winsize.tp_row));
245 teken_input_byte(teken_t *t, unsigned char c)
251 if ((c & 0x80) == 0x00 || t->t_stateflags & TS_8BIT) {
252 /* One-byte sequence. */
254 teken_input_char(t, c);
255 } else if ((c & 0xe0) == 0xc0) {
256 /* Two-byte sequence. */
258 t->t_utf8_partial = c & 0x1f;
259 } else if ((c & 0xf0) == 0xe0) {
260 /* Three-byte sequence. */
262 t->t_utf8_partial = c & 0x0f;
263 } else if ((c & 0xf8) == 0xf0) {
264 /* Four-byte sequence. */
266 t->t_utf8_partial = c & 0x07;
267 } else if ((c & 0xc0) == 0x80) {
268 if (t->t_utf8_left == 0)
271 t->t_utf8_partial = (t->t_utf8_partial << 6) | (c & 0x3f);
272 if (t->t_utf8_left == 0) {
273 teken_printf("Got UTF-8 char %x\n", t->t_utf8_partial);
274 teken_input_char(t, t->t_utf8_partial);
280 teken_input(teken_t *t, const void *buf, size_t len)
285 teken_input_byte(t, *c++);
289 teken_get_cursor(teken_t *t)
292 return (&t->t_cursor);
296 teken_set_cursor(teken_t *t, const teken_pos_t *p)
299 /* XXX: bounds checking with originreg! */
300 teken_assert(p->tp_row < t->t_winsize.tp_row);
301 teken_assert(p->tp_col < t->t_winsize.tp_col);
307 teken_get_curattr(teken_t *t)
310 return (&t->t_curattr);
314 teken_set_curattr(teken_t *t, const teken_attr_t *a)
321 teken_get_defattr(teken_t *t)
324 return (&t->t_defattr);
328 teken_set_defattr(teken_t *t, const teken_attr_t *a)
331 t->t_curattr = t->t_saved_curattr = t->t_defattr = *a;
335 teken_get_winsize(teken_t *t)
338 return (&t->t_winsize);
342 teken_trim_cursor_pos(teken_t *t, const teken_pos_t *new)
344 const teken_pos_t *cur;
348 if (cur->tp_row < new->tp_row || cur->tp_col < new->tp_col)
350 if (t->t_cursor.tp_row >= new->tp_row)
351 t->t_cursor.tp_row = new->tp_row - 1;
352 if (t->t_cursor.tp_col >= new->tp_col)
353 t->t_cursor.tp_col = new->tp_col - 1;
357 teken_set_winsize(teken_t *t, const teken_pos_t *p)
360 teken_trim_cursor_pos(t, p);
362 teken_subr_do_reset(t);
366 teken_set_winsize_noreset(teken_t *t, const teken_pos_t *p)
369 teken_trim_cursor_pos(t, p);
371 teken_subr_do_resize(t);
375 teken_set_8bit(teken_t *t)
378 t->t_stateflags |= TS_8BIT;
382 teken_set_cons25(teken_t *t)
385 t->t_stateflags |= TS_CONS25;
393 teken_state_switch(teken_t *t, teken_state_t *s)
398 t->t_stateflags |= TS_FIRSTDIGIT;
402 teken_state_numbers(teken_t *t, teken_char_t c)
405 teken_assert(t->t_curnum < T_NUMSIZE);
407 if (c >= '0' && c <= '9') {
409 * Don't do math with the default value of 1 when a
410 * custom number is inserted.
412 if (t->t_stateflags & TS_FIRSTDIGIT) {
413 t->t_stateflags &= ~TS_FIRSTDIGIT;
414 t->t_nums[t->t_curnum] = 0;
416 t->t_nums[t->t_curnum] *= 10;
419 t->t_nums[t->t_curnum] += c - '0';
421 } else if (c == ';') {
422 if (t->t_stateflags & TS_FIRSTDIGIT)
423 t->t_nums[t->t_curnum] = 0;
425 /* Only allow a limited set of arguments. */
426 if (++t->t_curnum == T_NUMSIZE) {
427 teken_state_switch(t, teken_state_init);
431 t->t_stateflags |= TS_FIRSTDIGIT;
434 if (t->t_stateflags & TS_FIRSTDIGIT && t->t_curnum > 0) {
435 /* Finish off the last empty argument. */
436 t->t_nums[t->t_curnum] = 0;
438 } else if ((t->t_stateflags & TS_FIRSTDIGIT) == 0) {
439 /* Also count the last argument. */
448 teken_256to8(teken_color_t c)
450 unsigned int r, g, b;
453 /* Traditional color indices. */
455 } else if (c >= 244) {
456 /* Upper grayscale colors. */
458 } else if (c >= 232) {
459 /* Lower grayscale colors. */
463 /* Convert to RGB. */
470 /* Possibly green. */
486 /* Possibly brown. */
498 static const char * const special_strings_cons25[] = {
499 [TKEY_UP] = "\x1B[A", [TKEY_DOWN] = "\x1B[B",
500 [TKEY_LEFT] = "\x1B[D", [TKEY_RIGHT] = "\x1B[C",
502 [TKEY_HOME] = "\x1B[H", [TKEY_END] = "\x1B[F",
503 [TKEY_INSERT] = "\x1B[L", [TKEY_DELETE] = "\x7F",
504 [TKEY_PAGE_UP] = "\x1B[I", [TKEY_PAGE_DOWN] = "\x1B[G",
506 [TKEY_F1] = "\x1B[M", [TKEY_F2] = "\x1B[N",
507 [TKEY_F3] = "\x1B[O", [TKEY_F4] = "\x1B[P",
508 [TKEY_F5] = "\x1B[Q", [TKEY_F6] = "\x1B[R",
509 [TKEY_F7] = "\x1B[S", [TKEY_F8] = "\x1B[T",
510 [TKEY_F9] = "\x1B[U", [TKEY_F10] = "\x1B[V",
511 [TKEY_F11] = "\x1B[W", [TKEY_F12] = "\x1B[X",
514 static const char * const special_strings_ckeys[] = {
515 [TKEY_UP] = "\x1BOA", [TKEY_DOWN] = "\x1BOB",
516 [TKEY_LEFT] = "\x1BOD", [TKEY_RIGHT] = "\x1BOC",
518 [TKEY_HOME] = "\x1BOH", [TKEY_END] = "\x1BOF",
521 static const char * const special_strings_normal[] = {
522 [TKEY_UP] = "\x1B[A", [TKEY_DOWN] = "\x1B[B",
523 [TKEY_LEFT] = "\x1B[D", [TKEY_RIGHT] = "\x1B[C",
525 [TKEY_HOME] = "\x1B[H", [TKEY_END] = "\x1B[F",
526 [TKEY_INSERT] = "\x1B[2~", [TKEY_DELETE] = "\x1B[3~",
527 [TKEY_PAGE_UP] = "\x1B[5~", [TKEY_PAGE_DOWN] = "\x1B[6~",
529 [TKEY_F1] = "\x1BOP", [TKEY_F2] = "\x1BOQ",
530 [TKEY_F3] = "\x1BOR", [TKEY_F4] = "\x1BOS",
531 [TKEY_F5] = "\x1B[15~", [TKEY_F6] = "\x1B[17~",
532 [TKEY_F7] = "\x1B[18~", [TKEY_F8] = "\x1B[19~",
533 [TKEY_F9] = "\x1B[20~", [TKEY_F10] = "\x1B[21~",
534 [TKEY_F11] = "\x1B[23~", [TKEY_F12] = "\x1B[24~",
538 teken_get_sequence(teken_t *t, unsigned int k)
542 if (t->t_stateflags & TS_CONS25 &&
543 k < sizeof special_strings_cons25 / sizeof(char *))
544 return (special_strings_cons25[k]);
546 /* Cursor keys mode. */
547 if (t->t_stateflags & TS_CURSORKEYS &&
548 k < sizeof special_strings_ckeys / sizeof(char *))
549 return (special_strings_ckeys[k]);
551 /* Default xterm sequences. */
552 if (k < sizeof special_strings_normal / sizeof(char *))
553 return (special_strings_normal[k]);
558 #include "teken_state.h"