colour.c revision 1.1
1 /* $Id: colour.c,v 1.1 2011/03/10 09:15:38 jmmv Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Nicholas Marriott <nicm (at) 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 21 #include <stdlib.h> 22 #include <string.h> 23 24 #include "tmux.h" 25 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 47 const char * 48 colour_tostring(int c) 49 { 50 static char s[32]; 51 52 if (c & 0x100) { 53 xsnprintf(s, sizeof s, "colour%u", c & ~0x100); 54 return (s); 55 } 56 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 { 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 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 } 163
Indexes created Sat Apr 11 00:22:22 UTC 2026