Annotation of src/usr.bin/tmux/colour.c, Revision 1.2
1.2 ! nicm 1: /* $OpenBSD: colour.c,v 1.1 2009/06/01 22:58:49 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
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:
1.2 ! nicm 21: #include <stdlib.h>
1.1 nicm 22: #include <string.h>
23:
24: #include "tmux.h"
25:
1.2 ! nicm 26: /*
! 27: * Colour to string conversion functions. Bit 8 of the colour means it is one
! 28: * of the 256 colour palette.
! 29: */
! 30:
! 31: void
! 32: colour_set_fg(struct grid_cell *gc, int c)
! 33: {
! 34: if (c & 0x100)
! 35: gc->flags |= GRID_FLAG_FG256;
! 36: gc->fg = c;
! 37: }
! 38:
! 39: void
! 40: colour_set_bg(struct grid_cell *gc, int c)
! 41: {
! 42: if (c & 0x100)
! 43: gc->flags |= GRID_FLAG_BG256;
! 44: gc->bg = c;
! 45: }
! 46:
1.1 nicm 47: const char *
1.2 ! nicm 48: colour_tostring(int c)
1.1 nicm 49: {
1.2 ! nicm 50: static char s[32];
! 51:
! 52: if (c & 0x100) {
! 53: xsnprintf(s, sizeof s, "colour%u", c & ~0x100);
! 54: return (s);
! 55: }
! 56:
1.1 nicm 57: switch (c) {
58: case 0:
59: return ("black");
60: case 1:
61: return ("red");
62: case 2:
63: return ("green");
64: case 3:
65: return ("yellow");
66: case 4:
67: return ("blue");
68: case 5:
69: return ("magenta");
70: case 6:
71: return ("cyan");
72: case 7:
73: return ("white");
74: case 8:
75: return ("default");
76: }
77: return (NULL);
78: }
79:
80: int
81: colour_fromstring(const char *s)
82: {
1.2 ! nicm 83: const char *errstr;
! 84: int n;
! 85:
! 86: if (strncasecmp(s, "colour", (sizeof "colour") - 1) == 0) {
! 87: n = strtonum(s + (sizeof "colour") - 1, 0, 255, &errstr);
! 88: if (errstr != NULL)
! 89: return (-1);
! 90: return (n | 0x100);
! 91: }
! 92:
1.1 nicm 93: if (strcasecmp(s, "black") == 0 || (s[0] == '0' && s[1] == '\0'))
94: return (0);
95: if (strcasecmp(s, "red") == 0 || (s[0] == '1' && s[1] == '\0'))
96: return (1);
97: if (strcasecmp(s, "green") == 0 || (s[0] == '2' && s[1] == '\0'))
98: return (2);
99: if (strcasecmp(s, "yellow") == 0 || (s[0] == '3' && s[1] == '\0'))
100: return (3);
101: if (strcasecmp(s, "blue") == 0 || (s[0] == '4' && s[1] == '\0'))
102: return (4);
103: if (strcasecmp(s, "magenta") == 0 || (s[0] == '5' && s[1] == '\0'))
104: return (5);
105: if (strcasecmp(s, "cyan") == 0 || (s[0] == '6' && s[1] == '\0'))
106: return (6);
107: if (strcasecmp(s, "white") == 0 || (s[0] == '7' && s[1] == '\0'))
108: return (7);
109: if (strcasecmp(s, "default") == 0 || (s[0] == '8' && s[1] == '\0'))
110: return (8);
111: return (-1);
112: }
113:
114: u_char
115: colour_256to16(u_char c)
116: {
117: static const u_char table[256] = {
118: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
119: 0, 4, 4, 4, 12, 12, 2, 6, 4, 4, 12, 12, 2, 2, 6, 4,
120: 12, 12, 2, 2, 2, 6, 12, 12, 10, 10, 10, 10, 14, 12, 10, 10,
121: 10, 10, 10, 14, 1, 5, 4, 4, 12, 12, 3, 8, 4, 4, 12, 12,
122: 2, 2, 6, 4, 12, 12, 2, 2, 2, 6, 12, 12, 10, 10, 10, 10,
123: 14, 12, 10, 10, 10, 10, 10, 14, 1, 1, 5, 4, 12, 12, 1, 1,
124: 5, 4, 12, 12, 3, 3, 8, 4, 12, 12, 2, 2, 2, 6, 12, 12,
125: 10, 10, 10, 10, 14, 12, 10, 10, 10, 10, 10, 14, 1, 1, 1, 5,
126: 12, 12, 1, 1, 1, 5, 12, 12, 1, 1, 1, 5, 12, 12, 3, 3,
127: 3, 7, 12, 12, 10, 10, 10, 10, 14, 12, 10, 10, 10, 10, 10, 14,
128: 9, 9, 9, 9, 13, 12, 9, 9, 9, 9, 13, 12, 9, 9, 9, 9,
129: 13, 12, 9, 9, 9, 9, 13, 12, 11, 11, 11, 11, 7, 12, 10, 10,
130: 10, 10, 10, 14, 9, 9, 9, 9, 9, 13, 9, 9, 9, 9, 9, 13,
131: 9, 9, 9, 9, 9, 13, 9, 9, 9, 9, 9, 13, 9, 9, 9, 9,
132: 9, 13, 11, 11, 11, 11, 11, 15, 0, 0, 0, 0, 0, 0, 8, 8,
133: 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15
134: };
135:
136: return (table[c]);
137: }
138:
139: u_char
140: colour_256to88(u_char c)
141: {
142: static const u_char table[256] = {
143: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
144: 16, 17, 17, 18, 18, 19, 20, 21, 21, 22, 22, 23, 20, 21, 21, 22,
145: 22, 23, 24, 25, 25, 26, 26, 27, 24, 25, 25, 26, 26, 27, 28, 29,
146: 29, 30, 30, 31, 32, 33, 33, 34, 34, 35, 36, 37, 37, 38, 38, 39,
147: 36, 37, 37, 38, 38, 39, 40, 41, 41, 42, 42, 43, 40, 41, 41, 42,
148: 42, 43, 44, 45, 45, 46, 46, 47, 32, 33, 33, 34, 34, 35, 36, 37,
149: 37, 38, 38, 39, 36, 37, 37, 38, 38, 39, 40, 41, 41, 42, 42, 43,
150: 40, 41, 41, 42, 42, 43, 44, 45, 45, 46, 46, 47, 48, 49, 49, 50,
151: 50, 51, 52, 53, 53, 54, 54, 55, 52, 53, 53, 54, 54, 55, 56, 57,
152: 57, 58, 58, 59, 56, 57, 57, 58, 58, 59, 60, 61, 61, 62, 62, 63,
153: 48, 49, 49, 50, 50, 51, 52, 53, 53, 54, 54, 55, 52, 53, 53, 54,
154: 54, 55, 56, 57, 57, 58, 58, 59, 56, 57, 57, 58, 58, 59, 60, 61,
155: 61, 62, 62, 63, 64, 65, 65, 66, 66, 67, 68, 69, 69, 70, 70, 71,
156: 68, 69, 69, 70, 70, 71, 72, 73, 73, 74, 74, 75, 72, 73, 73, 74,
157: 74, 75, 76, 77, 77, 78, 78, 79, 0, 0, 80, 80, 80, 81, 81, 81,
158: 82, 82, 82, 83, 83, 83, 84, 84, 84, 85, 85, 85, 86, 86, 86, 87
159: };
160:
161: return (table[c]);
162: }
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