1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20
21 #include <stdlib.h>
22
23 #include "tmux.h"
24
25 int tty_acs_cmp(const void *, const void *);
26
27 /* Table mapping ACS entries to UTF-8. */
28 struct tty_acs_entry {
29 u_char key;
30 const char *string;
31 };
32 const struct tty_acs_entry tty_acs_table[] = {
33 { '+', "\342\206\222" }, /* arrow pointing right */
34 { ',', "\342\206\220" }, /* arrow pointing left */
35 { '-', "\342\206\221" }, /* arrow pointing up */
36 { '.', "\342\206\223" }, /* arrow pointing down */
37 { '0', "\342\226\256" }, /* solid square block */
38 { '`', "\342\227\206" }, /* diamond */
39 { 'a', "\342\226\222" }, /* checker board (stipple) */
40 { 'f', "\302\260" }, /* degree symbol */
41 { 'g', "\302\261" }, /* plus/minus */
42 { 'h', "\342\226\222" }, /* board of squares */
43 { 'i', "\342\230\203" }, /* lantern symbol */
44 { 'j', "\342\224\230" }, /* lower right corner */
45 { 'k', "\342\224\220" }, /* upper right corner */
46 { 'l', "\342\224\214" }, /* upper left corner */
47 { 'm', "\342\224\224" }, /* lower left corner */
48 { 'n', "\342\224\274" }, /* large plus or crossover */
49 { 'o', "\342\216\272" }, /* scan line 1 */
50 { 'p', "\342\216\273" }, /* scan line 3 */
51 { 'q', "\342\224\200" }, /* horizontal line */
52 { 'r', "\342\216\274" }, /* scan line 7 */
53 { 's', "\342\216\275" }, /* scan line 9 */
54 { 't', "\342\224\234" }, /* tee pointing right */
55 { 'u', "\342\224\244" }, /* tee pointing left */
56 { 'v', "\342\224\264" }, /* tee pointing up */
57 { 'w', "\342\224\254" }, /* tee pointing down */
58 { 'x', "\342\224\202" }, /* vertical line */
59 { 'y', "\342\211\244" }, /* less-than-or-equal-to */
60 { 'z', "\342\211\245" }, /* greater-than-or-equal-to */
61 { '{', "\317\200" }, /* greek pi */
62 { '|', "\342\211\240" }, /* not-equal */
63 { '}', "\302\243" }, /* UK pound sign */
64 { '~', "\302\267" } /* bullet */
65 };
66
67 int
tty_acs_cmp(const void * key,const void * value)68 tty_acs_cmp(const void *key, const void *value)
69 {
70 const struct tty_acs_entry *entry = value;
71 u_char ch;
72
73 ch = *(u_char *) key;
74 return (ch - entry->key);
75 }
76
77 /* Retrieve ACS to output as a string. */
78 const char *
tty_acs_get(struct tty * tty,u_char ch)79 tty_acs_get(struct tty *tty, u_char ch)
80 {
81 struct tty_acs_entry *entry;
82
83 /* If not a UTF-8 terminal, use the ACS set. */
84 if (tty != NULL && !(tty->flags & TTY_UTF8)) {
85 if (tty->term->acs[ch][0] == '\0')
86 return (NULL);
87 return (&tty->term->acs[ch][0]);
88 }
89
90 /* Otherwise look up the UTF-8 translation. */
91 entry = bsearch(&ch,
92 tty_acs_table, nitems(tty_acs_table), sizeof tty_acs_table[0],
93 tty_acs_cmp);
94 if (entry == NULL)
95 return (NULL);
96 return (entry->string);
97 }
98