Annotation of src/usr.bin/tmux/colour.c, Revision 1.10
1.10 ! nicm 1: /* $OpenBSD: colour.c,v 1.9 2015/06/05 22:01:17 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:
1.3 nicm 21: #include <ctype.h>
1.2 nicm 22: #include <stdlib.h>
1.1 nicm 23: #include <string.h>
24:
25: #include "tmux.h"
26:
1.2 nicm 27: /*
28: * Colour to string conversion functions. Bit 8 of the colour means it is one
29: * of the 256 colour palette.
30: */
31:
1.3 nicm 32: struct colour_rgb {
1.9 nicm 33: u_char i;
1.3 nicm 34: u_char r;
35: u_char g;
36: u_char b;
37: };
38:
1.9 nicm 39: const struct colour_rgb colour_from_256[] = {
40: { 0, 0x00, 0x00, 0x00 }, { 1, 0x00, 0x00, 0x5f },
41: { 2, 0x00, 0x00, 0x87 }, { 3, 0x00, 0x00, 0xaf },
42: { 4, 0x00, 0x00, 0xd7 }, { 5, 0x00, 0x00, 0xff },
43: { 6, 0x00, 0x5f, 0x00 }, { 7, 0x00, 0x5f, 0x5f },
44: { 8, 0x00, 0x5f, 0x87 }, { 9, 0x00, 0x5f, 0xaf },
45: { 10, 0x00, 0x5f, 0xd7 }, { 11, 0x00, 0x5f, 0xff },
46: { 12, 0x00, 0x87, 0x00 }, { 13, 0x00, 0x87, 0x5f },
47: { 14, 0x00, 0x87, 0x87 }, { 15, 0x00, 0x87, 0xaf },
48: { 16, 0x00, 0x87, 0xd7 }, { 17, 0x00, 0x87, 0xff },
49: { 18, 0x00, 0xaf, 0x00 }, { 19, 0x00, 0xaf, 0x5f },
50: { 20, 0x00, 0xaf, 0x87 }, { 21, 0x00, 0xaf, 0xaf },
51: { 22, 0x00, 0xaf, 0xd7 }, { 23, 0x00, 0xaf, 0xff },
52: { 24, 0x00, 0xd7, 0x00 }, { 25, 0x00, 0xd7, 0x5f },
53: { 26, 0x00, 0xd7, 0x87 }, { 27, 0x00, 0xd7, 0xaf },
54: { 28, 0x00, 0xd7, 0xd7 }, { 29, 0x00, 0xd7, 0xff },
55: { 30, 0x00, 0xff, 0x00 }, { 31, 0x00, 0xff, 0x5f },
56: { 32, 0x00, 0xff, 0x87 }, { 33, 0x00, 0xff, 0xaf },
57: { 34, 0x00, 0xff, 0xd7 }, { 35, 0x00, 0xff, 0xff },
58: { 36, 0x5f, 0x00, 0x00 }, { 37, 0x5f, 0x00, 0x5f },
59: { 38, 0x5f, 0x00, 0x87 }, { 39, 0x5f, 0x00, 0xaf },
60: { 40, 0x5f, 0x00, 0xd7 }, { 41, 0x5f, 0x00, 0xff },
61: { 42, 0x5f, 0x5f, 0x00 }, { 43, 0x5f, 0x5f, 0x5f },
62: { 44, 0x5f, 0x5f, 0x87 }, { 45, 0x5f, 0x5f, 0xaf },
63: { 46, 0x5f, 0x5f, 0xd7 }, { 47, 0x5f, 0x5f, 0xff },
64: { 48, 0x5f, 0x87, 0x00 }, { 49, 0x5f, 0x87, 0x5f },
65: { 50, 0x5f, 0x87, 0x87 }, { 51, 0x5f, 0x87, 0xaf },
66: { 52, 0x5f, 0x87, 0xd7 }, { 53, 0x5f, 0x87, 0xff },
67: { 54, 0x5f, 0xaf, 0x00 }, { 55, 0x5f, 0xaf, 0x5f },
68: { 56, 0x5f, 0xaf, 0x87 }, { 57, 0x5f, 0xaf, 0xaf },
69: { 58, 0x5f, 0xaf, 0xd7 }, { 59, 0x5f, 0xaf, 0xff },
70: { 60, 0x5f, 0xd7, 0x00 }, { 61, 0x5f, 0xd7, 0x5f },
71: { 62, 0x5f, 0xd7, 0x87 }, { 63, 0x5f, 0xd7, 0xaf },
72: { 64, 0x5f, 0xd7, 0xd7 }, { 65, 0x5f, 0xd7, 0xff },
73: { 66, 0x5f, 0xff, 0x00 }, { 67, 0x5f, 0xff, 0x5f },
74: { 68, 0x5f, 0xff, 0x87 }, { 69, 0x5f, 0xff, 0xaf },
75: { 70, 0x5f, 0xff, 0xd7 }, { 71, 0x5f, 0xff, 0xff },
76: { 72, 0x87, 0x00, 0x00 }, { 73, 0x87, 0x00, 0x5f },
77: { 74, 0x87, 0x00, 0x87 }, { 75, 0x87, 0x00, 0xaf },
78: { 76, 0x87, 0x00, 0xd7 }, { 77, 0x87, 0x00, 0xff },
79: { 78, 0x87, 0x5f, 0x00 }, { 79, 0x87, 0x5f, 0x5f },
80: { 80, 0x87, 0x5f, 0x87 }, { 81, 0x87, 0x5f, 0xaf },
81: { 82, 0x87, 0x5f, 0xd7 }, { 83, 0x87, 0x5f, 0xff },
82: { 84, 0x87, 0x87, 0x00 }, { 85, 0x87, 0x87, 0x5f },
83: { 86, 0x87, 0x87, 0x87 }, { 87, 0x87, 0x87, 0xaf },
84: { 88, 0x87, 0x87, 0xd7 }, { 89, 0x87, 0x87, 0xff },
85: { 90, 0x87, 0xaf, 0x00 }, { 91, 0x87, 0xaf, 0x5f },
86: { 92, 0x87, 0xaf, 0x87 }, { 93, 0x87, 0xaf, 0xaf },
87: { 94, 0x87, 0xaf, 0xd7 }, { 95, 0x87, 0xaf, 0xff },
88: { 96, 0x87, 0xd7, 0x00 }, { 97, 0x87, 0xd7, 0x5f },
89: { 98, 0x87, 0xd7, 0x87 }, { 99, 0x87, 0xd7, 0xaf },
90: { 100, 0x87, 0xd7, 0xd7 }, { 101, 0x87, 0xd7, 0xff },
91: { 102, 0x87, 0xff, 0x00 }, { 103, 0x87, 0xff, 0x5f },
92: { 104, 0x87, 0xff, 0x87 }, { 105, 0x87, 0xff, 0xaf },
93: { 106, 0x87, 0xff, 0xd7 }, { 107, 0x87, 0xff, 0xff },
94: { 108, 0xaf, 0x00, 0x00 }, { 109, 0xaf, 0x00, 0x5f },
95: { 110, 0xaf, 0x00, 0x87 }, { 111, 0xaf, 0x00, 0xaf },
96: { 112, 0xaf, 0x00, 0xd7 }, { 113, 0xaf, 0x00, 0xff },
97: { 114, 0xaf, 0x5f, 0x00 }, { 115, 0xaf, 0x5f, 0x5f },
98: { 116, 0xaf, 0x5f, 0x87 }, { 117, 0xaf, 0x5f, 0xaf },
99: { 118, 0xaf, 0x5f, 0xd7 }, { 119, 0xaf, 0x5f, 0xff },
100: { 120, 0xaf, 0x87, 0x00 }, { 121, 0xaf, 0x87, 0x5f },
101: { 122, 0xaf, 0x87, 0x87 }, { 123, 0xaf, 0x87, 0xaf },
102: { 124, 0xaf, 0x87, 0xd7 }, { 125, 0xaf, 0x87, 0xff },
103: { 126, 0xaf, 0xaf, 0x00 }, { 127, 0xaf, 0xaf, 0x5f },
104: { 128, 0xaf, 0xaf, 0x87 }, { 129, 0xaf, 0xaf, 0xaf },
105: { 130, 0xaf, 0xaf, 0xd7 }, { 131, 0xaf, 0xaf, 0xff },
106: { 132, 0xaf, 0xd7, 0x00 }, { 133, 0xaf, 0xd7, 0x5f },
107: { 134, 0xaf, 0xd7, 0x87 }, { 135, 0xaf, 0xd7, 0xaf },
108: { 136, 0xaf, 0xd7, 0xd7 }, { 137, 0xaf, 0xd7, 0xff },
109: { 138, 0xaf, 0xff, 0x00 }, { 139, 0xaf, 0xff, 0x5f },
110: { 140, 0xaf, 0xff, 0x87 }, { 141, 0xaf, 0xff, 0xaf },
111: { 142, 0xaf, 0xff, 0xd7 }, { 143, 0xaf, 0xff, 0xff },
112: { 144, 0xd7, 0x00, 0x00 }, { 145, 0xd7, 0x00, 0x5f },
113: { 146, 0xd7, 0x00, 0x87 }, { 147, 0xd7, 0x00, 0xaf },
114: { 148, 0xd7, 0x00, 0xd7 }, { 149, 0xd7, 0x00, 0xff },
115: { 150, 0xd7, 0x5f, 0x00 }, { 151, 0xd7, 0x5f, 0x5f },
116: { 152, 0xd7, 0x5f, 0x87 }, { 153, 0xd7, 0x5f, 0xaf },
117: { 154, 0xd7, 0x5f, 0xd7 }, { 155, 0xd7, 0x5f, 0xff },
118: { 156, 0xd7, 0x87, 0x00 }, { 157, 0xd7, 0x87, 0x5f },
119: { 158, 0xd7, 0x87, 0x87 }, { 159, 0xd7, 0x87, 0xaf },
120: { 160, 0xd7, 0x87, 0xd7 }, { 161, 0xd7, 0x87, 0xff },
121: { 162, 0xd7, 0xaf, 0x00 }, { 163, 0xd7, 0xaf, 0x5f },
122: { 164, 0xd7, 0xaf, 0x87 }, { 165, 0xd7, 0xaf, 0xaf },
123: { 166, 0xd7, 0xaf, 0xd7 }, { 167, 0xd7, 0xaf, 0xff },
124: { 168, 0xd7, 0xd7, 0x00 }, { 169, 0xd7, 0xd7, 0x5f },
125: { 170, 0xd7, 0xd7, 0x87 }, { 171, 0xd7, 0xd7, 0xaf },
126: { 172, 0xd7, 0xd7, 0xd7 }, { 173, 0xd7, 0xd7, 0xff },
127: { 174, 0xd7, 0xff, 0x00 }, { 175, 0xd7, 0xff, 0x5f },
128: { 176, 0xd7, 0xff, 0x87 }, { 177, 0xd7, 0xff, 0xaf },
129: { 178, 0xd7, 0xff, 0xd7 }, { 179, 0xd7, 0xff, 0xff },
130: { 180, 0xff, 0x00, 0x00 }, { 181, 0xff, 0x00, 0x5f },
131: { 182, 0xff, 0x00, 0x87 }, { 183, 0xff, 0x00, 0xaf },
132: { 184, 0xff, 0x00, 0xd7 }, { 185, 0xff, 0x00, 0xff },
133: { 186, 0xff, 0x5f, 0x00 }, { 187, 0xff, 0x5f, 0x5f },
134: { 188, 0xff, 0x5f, 0x87 }, { 189, 0xff, 0x5f, 0xaf },
135: { 190, 0xff, 0x5f, 0xd7 }, { 191, 0xff, 0x5f, 0xff },
136: { 192, 0xff, 0x87, 0x00 }, { 193, 0xff, 0x87, 0x5f },
137: { 194, 0xff, 0x87, 0x87 }, { 195, 0xff, 0x87, 0xaf },
138: { 196, 0xff, 0x87, 0xd7 }, { 197, 0xff, 0x87, 0xff },
139: { 198, 0xff, 0xaf, 0x00 }, { 199, 0xff, 0xaf, 0x5f },
140: { 200, 0xff, 0xaf, 0x87 }, { 201, 0xff, 0xaf, 0xaf },
141: { 202, 0xff, 0xaf, 0xd7 }, { 203, 0xff, 0xaf, 0xff },
142: { 204, 0xff, 0xd7, 0x00 }, { 205, 0xff, 0xd7, 0x5f },
143: { 206, 0xff, 0xd7, 0x87 }, { 207, 0xff, 0xd7, 0xaf },
144: { 208, 0xff, 0xd7, 0xd7 }, { 209, 0xff, 0xd7, 0xff },
145: { 210, 0xff, 0xff, 0x00 }, { 211, 0xff, 0xff, 0x5f },
146: { 212, 0xff, 0xff, 0x87 }, { 213, 0xff, 0xff, 0xaf },
147: { 214, 0xff, 0xff, 0xd7 }, { 215, 0xff, 0xff, 0xff },
148: { 216, 0x08, 0x08, 0x08 }, { 217, 0x12, 0x12, 0x12 },
149: { 218, 0x1c, 0x1c, 0x1c }, { 219, 0x26, 0x26, 0x26 },
150: { 220, 0x30, 0x30, 0x30 }, { 221, 0x3a, 0x3a, 0x3a },
151: { 222, 0x44, 0x44, 0x44 }, { 223, 0x4e, 0x4e, 0x4e },
152: { 224, 0x58, 0x58, 0x58 }, { 225, 0x62, 0x62, 0x62 },
153: { 226, 0x6c, 0x6c, 0x6c }, { 227, 0x76, 0x76, 0x76 },
154: { 228, 0x80, 0x80, 0x80 }, { 229, 0x8a, 0x8a, 0x8a },
155: { 230, 0x94, 0x94, 0x94 }, { 231, 0x9e, 0x9e, 0x9e },
156: { 232, 0xa8, 0xa8, 0xa8 }, { 233, 0xb2, 0xb2, 0xb2 },
157: { 234, 0xbc, 0xbc, 0xbc }, { 235, 0xc6, 0xc6, 0xc6 },
158: { 236, 0xd0, 0xd0, 0xd0 }, { 237, 0xda, 0xda, 0xda },
159: { 238, 0xe4, 0xe4, 0xe4 }, { 239, 0xee, 0xee, 0xee },
160: };
161: const struct colour_rgb colour_to_256[] = {
162: { 0, 0x00, 0x00, 0x00 }, { 1, 0x00, 0x00, 0x5f },
163: { 2, 0x00, 0x00, 0x87 }, { 3, 0x00, 0x00, 0xaf },
164: { 4, 0x00, 0x00, 0xd7 }, { 5, 0x00, 0x00, 0xff },
165: { 6, 0x00, 0x5f, 0x00 }, { 7, 0x00, 0x5f, 0x5f },
166: { 8, 0x00, 0x5f, 0x87 }, { 9, 0x00, 0x5f, 0xaf },
167: { 10, 0x00, 0x5f, 0xd7 }, { 11, 0x00, 0x5f, 0xff },
168: { 12, 0x00, 0x87, 0x00 }, { 13, 0x00, 0x87, 0x5f },
169: { 14, 0x00, 0x87, 0x87 }, { 15, 0x00, 0x87, 0xaf },
170: { 16, 0x00, 0x87, 0xd7 }, { 17, 0x00, 0x87, 0xff },
171: { 18, 0x00, 0xaf, 0x00 }, { 19, 0x00, 0xaf, 0x5f },
172: { 20, 0x00, 0xaf, 0x87 }, { 21, 0x00, 0xaf, 0xaf },
173: { 22, 0x00, 0xaf, 0xd7 }, { 23, 0x00, 0xaf, 0xff },
174: { 24, 0x00, 0xd7, 0x00 }, { 25, 0x00, 0xd7, 0x5f },
175: { 26, 0x00, 0xd7, 0x87 }, { 27, 0x00, 0xd7, 0xaf },
176: { 28, 0x00, 0xd7, 0xd7 }, { 29, 0x00, 0xd7, 0xff },
177: { 30, 0x00, 0xff, 0x00 }, { 31, 0x00, 0xff, 0x5f },
178: { 32, 0x00, 0xff, 0x87 }, { 33, 0x00, 0xff, 0xaf },
179: { 34, 0x00, 0xff, 0xd7 }, { 35, 0x00, 0xff, 0xff },
180: { 216, 0x08, 0x08, 0x08 }, { 217, 0x12, 0x12, 0x12 },
181: { 218, 0x1c, 0x1c, 0x1c }, { 219, 0x26, 0x26, 0x26 },
182: { 220, 0x30, 0x30, 0x30 }, { 221, 0x3a, 0x3a, 0x3a },
183: { 222, 0x44, 0x44, 0x44 }, { 223, 0x4e, 0x4e, 0x4e },
184: { 224, 0x58, 0x58, 0x58 }, { 36, 0x5f, 0x00, 0x00 },
185: { 37, 0x5f, 0x00, 0x5f }, { 38, 0x5f, 0x00, 0x87 },
186: { 39, 0x5f, 0x00, 0xaf }, { 40, 0x5f, 0x00, 0xd7 },
187: { 41, 0x5f, 0x00, 0xff }, { 42, 0x5f, 0x5f, 0x00 },
188: { 43, 0x5f, 0x5f, 0x5f }, { 44, 0x5f, 0x5f, 0x87 },
189: { 45, 0x5f, 0x5f, 0xaf }, { 46, 0x5f, 0x5f, 0xd7 },
190: { 47, 0x5f, 0x5f, 0xff }, { 48, 0x5f, 0x87, 0x00 },
191: { 49, 0x5f, 0x87, 0x5f }, { 50, 0x5f, 0x87, 0x87 },
192: { 51, 0x5f, 0x87, 0xaf }, { 52, 0x5f, 0x87, 0xd7 },
193: { 53, 0x5f, 0x87, 0xff }, { 54, 0x5f, 0xaf, 0x00 },
194: { 55, 0x5f, 0xaf, 0x5f }, { 56, 0x5f, 0xaf, 0x87 },
195: { 57, 0x5f, 0xaf, 0xaf }, { 58, 0x5f, 0xaf, 0xd7 },
196: { 59, 0x5f, 0xaf, 0xff }, { 60, 0x5f, 0xd7, 0x00 },
197: { 61, 0x5f, 0xd7, 0x5f }, { 62, 0x5f, 0xd7, 0x87 },
198: { 63, 0x5f, 0xd7, 0xaf }, { 64, 0x5f, 0xd7, 0xd7 },
199: { 65, 0x5f, 0xd7, 0xff }, { 66, 0x5f, 0xff, 0x00 },
200: { 67, 0x5f, 0xff, 0x5f }, { 68, 0x5f, 0xff, 0x87 },
201: { 69, 0x5f, 0xff, 0xaf }, { 70, 0x5f, 0xff, 0xd7 },
202: { 71, 0x5f, 0xff, 0xff }, { 225, 0x62, 0x62, 0x62 },
203: { 226, 0x6c, 0x6c, 0x6c }, { 227, 0x76, 0x76, 0x76 },
204: { 228, 0x80, 0x80, 0x80 }, { 72, 0x87, 0x00, 0x00 },
205: { 73, 0x87, 0x00, 0x5f }, { 74, 0x87, 0x00, 0x87 },
206: { 75, 0x87, 0x00, 0xaf }, { 76, 0x87, 0x00, 0xd7 },
207: { 77, 0x87, 0x00, 0xff }, { 78, 0x87, 0x5f, 0x00 },
208: { 79, 0x87, 0x5f, 0x5f }, { 80, 0x87, 0x5f, 0x87 },
209: { 81, 0x87, 0x5f, 0xaf }, { 82, 0x87, 0x5f, 0xd7 },
210: { 83, 0x87, 0x5f, 0xff }, { 84, 0x87, 0x87, 0x00 },
211: { 85, 0x87, 0x87, 0x5f }, { 86, 0x87, 0x87, 0x87 },
212: { 87, 0x87, 0x87, 0xaf }, { 88, 0x87, 0x87, 0xd7 },
213: { 89, 0x87, 0x87, 0xff }, { 90, 0x87, 0xaf, 0x00 },
214: { 91, 0x87, 0xaf, 0x5f }, { 92, 0x87, 0xaf, 0x87 },
215: { 93, 0x87, 0xaf, 0xaf }, { 94, 0x87, 0xaf, 0xd7 },
216: { 95, 0x87, 0xaf, 0xff }, { 96, 0x87, 0xd7, 0x00 },
217: { 97, 0x87, 0xd7, 0x5f }, { 98, 0x87, 0xd7, 0x87 },
218: { 99, 0x87, 0xd7, 0xaf }, { 100, 0x87, 0xd7, 0xd7 },
219: { 101, 0x87, 0xd7, 0xff }, { 102, 0x87, 0xff, 0x00 },
220: { 103, 0x87, 0xff, 0x5f }, { 104, 0x87, 0xff, 0x87 },
221: { 105, 0x87, 0xff, 0xaf }, { 106, 0x87, 0xff, 0xd7 },
222: { 107, 0x87, 0xff, 0xff }, { 229, 0x8a, 0x8a, 0x8a },
223: { 230, 0x94, 0x94, 0x94 }, { 231, 0x9e, 0x9e, 0x9e },
224: { 232, 0xa8, 0xa8, 0xa8 }, { 108, 0xaf, 0x00, 0x00 },
225: { 109, 0xaf, 0x00, 0x5f }, { 110, 0xaf, 0x00, 0x87 },
226: { 111, 0xaf, 0x00, 0xaf }, { 112, 0xaf, 0x00, 0xd7 },
227: { 113, 0xaf, 0x00, 0xff }, { 114, 0xaf, 0x5f, 0x00 },
228: { 115, 0xaf, 0x5f, 0x5f }, { 116, 0xaf, 0x5f, 0x87 },
229: { 117, 0xaf, 0x5f, 0xaf }, { 118, 0xaf, 0x5f, 0xd7 },
230: { 119, 0xaf, 0x5f, 0xff }, { 120, 0xaf, 0x87, 0x00 },
231: { 121, 0xaf, 0x87, 0x5f }, { 122, 0xaf, 0x87, 0x87 },
232: { 123, 0xaf, 0x87, 0xaf }, { 124, 0xaf, 0x87, 0xd7 },
233: { 125, 0xaf, 0x87, 0xff }, { 126, 0xaf, 0xaf, 0x00 },
234: { 127, 0xaf, 0xaf, 0x5f }, { 128, 0xaf, 0xaf, 0x87 },
235: { 129, 0xaf, 0xaf, 0xaf }, { 130, 0xaf, 0xaf, 0xd7 },
236: { 131, 0xaf, 0xaf, 0xff }, { 132, 0xaf, 0xd7, 0x00 },
237: { 133, 0xaf, 0xd7, 0x5f }, { 134, 0xaf, 0xd7, 0x87 },
238: { 135, 0xaf, 0xd7, 0xaf }, { 136, 0xaf, 0xd7, 0xd7 },
239: { 137, 0xaf, 0xd7, 0xff }, { 138, 0xaf, 0xff, 0x00 },
240: { 139, 0xaf, 0xff, 0x5f }, { 140, 0xaf, 0xff, 0x87 },
241: { 141, 0xaf, 0xff, 0xaf }, { 142, 0xaf, 0xff, 0xd7 },
242: { 143, 0xaf, 0xff, 0xff }, { 233, 0xb2, 0xb2, 0xb2 },
243: { 234, 0xbc, 0xbc, 0xbc }, { 235, 0xc6, 0xc6, 0xc6 },
244: { 236, 0xd0, 0xd0, 0xd0 }, { 144, 0xd7, 0x00, 0x00 },
245: { 145, 0xd7, 0x00, 0x5f }, { 146, 0xd7, 0x00, 0x87 },
246: { 147, 0xd7, 0x00, 0xaf }, { 148, 0xd7, 0x00, 0xd7 },
247: { 149, 0xd7, 0x00, 0xff }, { 150, 0xd7, 0x5f, 0x00 },
248: { 151, 0xd7, 0x5f, 0x5f }, { 152, 0xd7, 0x5f, 0x87 },
249: { 153, 0xd7, 0x5f, 0xaf }, { 154, 0xd7, 0x5f, 0xd7 },
250: { 155, 0xd7, 0x5f, 0xff }, { 156, 0xd7, 0x87, 0x00 },
251: { 157, 0xd7, 0x87, 0x5f }, { 158, 0xd7, 0x87, 0x87 },
252: { 159, 0xd7, 0x87, 0xaf }, { 160, 0xd7, 0x87, 0xd7 },
253: { 161, 0xd7, 0x87, 0xff }, { 162, 0xd7, 0xaf, 0x00 },
254: { 163, 0xd7, 0xaf, 0x5f }, { 164, 0xd7, 0xaf, 0x87 },
255: { 165, 0xd7, 0xaf, 0xaf }, { 166, 0xd7, 0xaf, 0xd7 },
256: { 167, 0xd7, 0xaf, 0xff }, { 168, 0xd7, 0xd7, 0x00 },
257: { 169, 0xd7, 0xd7, 0x5f }, { 170, 0xd7, 0xd7, 0x87 },
258: { 171, 0xd7, 0xd7, 0xaf }, { 172, 0xd7, 0xd7, 0xd7 },
259: { 173, 0xd7, 0xd7, 0xff }, { 174, 0xd7, 0xff, 0x00 },
260: { 175, 0xd7, 0xff, 0x5f }, { 176, 0xd7, 0xff, 0x87 },
261: { 177, 0xd7, 0xff, 0xaf }, { 178, 0xd7, 0xff, 0xd7 },
262: { 179, 0xd7, 0xff, 0xff }, { 237, 0xda, 0xda, 0xda },
263: { 238, 0xe4, 0xe4, 0xe4 }, { 239, 0xee, 0xee, 0xee },
264: { 180, 0xff, 0x00, 0x00 }, { 181, 0xff, 0x00, 0x5f },
265: { 182, 0xff, 0x00, 0x87 }, { 183, 0xff, 0x00, 0xaf },
266: { 184, 0xff, 0x00, 0xd7 }, { 185, 0xff, 0x00, 0xff },
267: { 186, 0xff, 0x5f, 0x00 }, { 187, 0xff, 0x5f, 0x5f },
268: { 188, 0xff, 0x5f, 0x87 }, { 189, 0xff, 0x5f, 0xaf },
269: { 190, 0xff, 0x5f, 0xd7 }, { 191, 0xff, 0x5f, 0xff },
270: { 192, 0xff, 0x87, 0x00 }, { 193, 0xff, 0x87, 0x5f },
271: { 194, 0xff, 0x87, 0x87 }, { 195, 0xff, 0x87, 0xaf },
272: { 196, 0xff, 0x87, 0xd7 }, { 197, 0xff, 0x87, 0xff },
273: { 198, 0xff, 0xaf, 0x00 }, { 199, 0xff, 0xaf, 0x5f },
274: { 200, 0xff, 0xaf, 0x87 }, { 201, 0xff, 0xaf, 0xaf },
275: { 202, 0xff, 0xaf, 0xd7 }, { 203, 0xff, 0xaf, 0xff },
276: { 204, 0xff, 0xd7, 0x00 }, { 205, 0xff, 0xd7, 0x5f },
277: { 206, 0xff, 0xd7, 0x87 }, { 207, 0xff, 0xd7, 0xaf },
278: { 208, 0xff, 0xd7, 0xd7 }, { 209, 0xff, 0xd7, 0xff },
279: { 210, 0xff, 0xff, 0x00 }, { 211, 0xff, 0xff, 0x5f },
280: { 212, 0xff, 0xff, 0x87 }, { 213, 0xff, 0xff, 0xaf },
281: { 214, 0xff, 0xff, 0xd7 }, { 215, 0xff, 0xff, 0xff },
282: };
1.3 nicm 283:
1.10 ! nicm 284: int colour_cmp_rgb(const void *, const void *);
1.3 nicm 285:
1.9 nicm 286: /* Compare function for bsearch(). */
287: int
1.10 ! nicm 288: colour_cmp_rgb(const void *lhs0, const void *rhs0)
1.3 nicm 289: {
1.9 nicm 290: const struct colour_rgb *lhs = lhs0, *rhs = rhs0;
1.3 nicm 291:
1.9 nicm 292: if (lhs->r < rhs->r)
293: return (-1);
294: if (lhs->r > rhs->r)
295: return (1);
1.3 nicm 296:
1.9 nicm 297: if (lhs->g < rhs->g)
298: return (-1);
299: if (lhs->g > rhs->g)
300: return (1);
1.3 nicm 301:
1.9 nicm 302: if (lhs->b < rhs->b)
303: return (-1);
304: if (lhs->b > rhs->b)
305: return (1);
1.3 nicm 306:
1.9 nicm 307: return (0);
1.3 nicm 308: }
309:
310: /* Work out the nearest colour from the 256 colour set. */
311: int
1.10 ! nicm 312: colour_find_rgb(u_char r, u_char g, u_char b)
1.3 nicm 313: {
1.10 ! nicm 314: struct colour_rgb rgb = { .r = r, .g = g, .b = b }, *found;
! 315: u_int distance, lowest, colour, i;
1.9 nicm 316:
1.10 ! nicm 317: found = bsearch(&rgb, colour_to_256, nitems(colour_to_256),
! 318: sizeof colour_to_256[0], colour_cmp_rgb);
1.9 nicm 319: if (found != NULL)
320: return (16 + found->i);
1.3 nicm 321:
322: colour = 16;
1.4 nicm 323: lowest = UINT_MAX;
1.3 nicm 324: for (i = 0; i < 240; i++) {
1.10 ! nicm 325: r = colour_from_256[i].r - rgb.r;
! 326: g = colour_from_256[i].g - rgb.g;
! 327: b = colour_from_256[i].b - rgb.b;
1.9 nicm 328:
329: distance = r * r + g * g + b * b;
1.3 nicm 330: if (distance < lowest) {
331: lowest = distance;
332: colour = 16 + i;
333: }
334: }
335: return (colour);
336: }
337:
338: /* Set grid cell foreground colour. */
1.2 nicm 339: void
340: colour_set_fg(struct grid_cell *gc, int c)
341: {
342: if (c & 0x100)
343: gc->flags |= GRID_FLAG_FG256;
344: gc->fg = c;
345: }
346:
1.3 nicm 347: /* Set grid cell background colour. */
1.2 nicm 348: void
349: colour_set_bg(struct grid_cell *gc, int c)
350: {
351: if (c & 0x100)
352: gc->flags |= GRID_FLAG_BG256;
353: gc->bg = c;
354: }
355:
1.3 nicm 356: /* Convert colour to a string. */
1.1 nicm 357: const char *
1.2 nicm 358: colour_tostring(int c)
1.1 nicm 359: {
1.2 nicm 360: static char s[32];
361:
362: if (c & 0x100) {
1.8 nicm 363: xsnprintf(s, sizeof s, "colour%d", c & ~0x100);
1.2 nicm 364: return (s);
365: }
366:
1.1 nicm 367: switch (c) {
368: case 0:
369: return ("black");
370: case 1:
371: return ("red");
372: case 2:
373: return ("green");
374: case 3:
375: return ("yellow");
376: case 4:
377: return ("blue");
378: case 5:
379: return ("magenta");
380: case 6:
381: return ("cyan");
382: case 7:
383: return ("white");
384: case 8:
385: return ("default");
1.5 nicm 386: case 90:
387: return ("brightblack");
388: case 91:
389: return ("brightred");
390: case 92:
391: return ("brightgreen");
392: case 93:
393: return ("brightyellow");
394: case 94:
395: return ("brightblue");
396: case 95:
397: return ("brightmagenta");
398: case 96:
399: return ("brightcyan");
400: case 97:
401: return ("brightwhite");
1.1 nicm 402: }
403: return (NULL);
404: }
405:
1.3 nicm 406: /* Convert colour from string. */
1.1 nicm 407: int
408: colour_fromstring(const char *s)
409: {
1.10 ! nicm 410: const char *errstr;
! 411: const char *cp;
! 412: int n;
! 413: u_char r, g, b;
1.3 nicm 414:
415: if (*s == '#' && strlen(s) == 7) {
416: for (cp = s + 1; isxdigit((u_char) *cp); cp++)
417: ;
418: if (*cp != '\0')
419: return (-1);
1.10 ! nicm 420: n = sscanf(s + 1, "%2hhx%2hhx%2hhx", &r, &g, &b);
1.3 nicm 421: if (n != 3)
422: return (-1);
1.10 ! nicm 423: return (colour_find_rgb(r, g, b) | 0x100);
1.3 nicm 424: }
1.2 nicm 425:
426: if (strncasecmp(s, "colour", (sizeof "colour") - 1) == 0) {
427: n = strtonum(s + (sizeof "colour") - 1, 0, 255, &errstr);
428: if (errstr != NULL)
429: return (-1);
430: return (n | 0x100);
431: }
432:
1.9 nicm 433: if (strcasecmp(s, "black") == 0 || strcmp(s, "0") == 0)
1.1 nicm 434: return (0);
1.9 nicm 435: if (strcasecmp(s, "red") == 0 || strcmp(s, "1") == 0)
1.1 nicm 436: return (1);
1.9 nicm 437: if (strcasecmp(s, "green") == 0 || strcmp(s, "2") == 0)
1.1 nicm 438: return (2);
1.9 nicm 439: if (strcasecmp(s, "yellow") == 0 || strcmp(s, "3") == 0)
1.1 nicm 440: return (3);
1.9 nicm 441: if (strcasecmp(s, "blue") == 0 || strcmp(s, "4") == 0)
1.1 nicm 442: return (4);
1.9 nicm 443: if (strcasecmp(s, "magenta") == 0 || strcmp(s, "5") == 0)
1.1 nicm 444: return (5);
1.9 nicm 445: if (strcasecmp(s, "cyan") == 0 || strcmp(s, "6") == 0)
1.1 nicm 446: return (6);
1.9 nicm 447: if (strcasecmp(s, "white") == 0 || strcmp(s, "7") == 0)
1.1 nicm 448: return (7);
1.9 nicm 449: if (strcasecmp(s, "default") == 0 || strcmp(s, "8") == 0)
1.1 nicm 450: return (8);
1.9 nicm 451: if (strcasecmp(s, "brightblack") == 0 || strcmp(s, "90") == 0)
1.5 nicm 452: return (90);
1.9 nicm 453: if (strcasecmp(s, "brightred") == 0 || strcmp(s, "91") == 0)
1.5 nicm 454: return (91);
1.9 nicm 455: if (strcasecmp(s, "brightgreen") == 0 || strcmp(s, "92") == 0)
1.5 nicm 456: return (92);
1.9 nicm 457: if (strcasecmp(s, "brightyellow") == 0 || strcmp(s, "93") == 0)
1.5 nicm 458: return (93);
1.9 nicm 459: if (strcasecmp(s, "brightblue") == 0 || strcmp(s, "94") == 0)
1.5 nicm 460: return (94);
1.9 nicm 461: if (strcasecmp(s, "brightmagenta") == 0 || strcmp(s, "95") == 0)
1.5 nicm 462: return (95);
1.9 nicm 463: if (strcasecmp(s, "brightcyan") == 0 || strcmp(s, "96") == 0)
1.5 nicm 464: return (96);
1.9 nicm 465: if (strcasecmp(s, "brightwhite") == 0 || strcmp(s, "97") == 0)
1.5 nicm 466: return (97);
1.1 nicm 467: return (-1);
468: }
469:
1.3 nicm 470: /* Convert 256 colour palette to 16. */
1.1 nicm 471: u_char
472: colour_256to16(u_char c)
473: {
474: static const u_char table[256] = {
475: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
476: 0, 4, 4, 4, 12, 12, 2, 6, 4, 4, 12, 12, 2, 2, 6, 4,
477: 12, 12, 2, 2, 2, 6, 12, 12, 10, 10, 10, 10, 14, 12, 10, 10,
478: 10, 10, 10, 14, 1, 5, 4, 4, 12, 12, 3, 8, 4, 4, 12, 12,
479: 2, 2, 6, 4, 12, 12, 2, 2, 2, 6, 12, 12, 10, 10, 10, 10,
480: 14, 12, 10, 10, 10, 10, 10, 14, 1, 1, 5, 4, 12, 12, 1, 1,
481: 5, 4, 12, 12, 3, 3, 8, 4, 12, 12, 2, 2, 2, 6, 12, 12,
482: 10, 10, 10, 10, 14, 12, 10, 10, 10, 10, 10, 14, 1, 1, 1, 5,
483: 12, 12, 1, 1, 1, 5, 12, 12, 1, 1, 1, 5, 12, 12, 3, 3,
484: 3, 7, 12, 12, 10, 10, 10, 10, 14, 12, 10, 10, 10, 10, 10, 14,
485: 9, 9, 9, 9, 13, 12, 9, 9, 9, 9, 13, 12, 9, 9, 9, 9,
486: 13, 12, 9, 9, 9, 9, 13, 12, 11, 11, 11, 11, 7, 12, 10, 10,
487: 10, 10, 10, 14, 9, 9, 9, 9, 9, 13, 9, 9, 9, 9, 9, 13,
488: 9, 9, 9, 9, 9, 13, 9, 9, 9, 9, 9, 13, 9, 9, 9, 9,
489: 9, 13, 11, 11, 11, 11, 11, 15, 0, 0, 0, 0, 0, 0, 8, 8,
490: 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15
491: };
492:
493: return (table[c]);
494: }
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