1 /* $OpenBSD: key-string.c,v 1.10 2009/11/10 17:24:43 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 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 21 #include <string.h> 22 23 #include "tmux.h" 24 25 int key_string_search_table(const char *); 26 27 struct { 28 const char *string; 29 int key; 30 } key_string_table[] = { 31 /* Function keys. */ 32 { "F1", KEYC_F1 }, 33 { "F2", KEYC_F2 }, 34 { "F3", KEYC_F3 }, 35 { "F4", KEYC_F4 }, 36 { "F5", KEYC_F5 }, 37 { "F6", KEYC_F6 }, 38 { "F7", KEYC_F7 }, 39 { "F8", KEYC_F8 }, 40 { "F9", KEYC_F9 }, 41 { "F10", KEYC_F10 }, 42 { "F11", KEYC_F11 }, 43 { "F12", KEYC_F12 }, 44 { "F13", KEYC_F13 }, 45 { "F14", KEYC_F14 }, 46 { "F15", KEYC_F15 }, 47 { "F16", KEYC_F16 }, 48 { "F17", KEYC_F17 }, 49 { "F18", KEYC_F18 }, 50 { "F19", KEYC_F19 }, 51 { "F20", KEYC_F20 }, 52 { "IC", KEYC_IC }, 53 { "DC", KEYC_DC }, 54 { "Home", KEYC_HOME }, 55 { "End", KEYC_END }, 56 { "NPage", KEYC_NPAGE }, 57 { "PPage", KEYC_PPAGE }, 58 { "Tab", '\011' }, 59 { "BTab", KEYC_BTAB }, 60 { "Space", ' ' }, 61 { "BSpace", KEYC_BSPACE }, 62 { "Enter", '\r' }, 63 { "Escape", '\033' }, 64 65 /* Arrow keys. */ 66 { "Up", KEYC_UP }, 67 { "Down", KEYC_DOWN }, 68 { "Left", KEYC_LEFT }, 69 { "Right", KEYC_RIGHT }, 70 71 /* Numeric keypad. */ 72 { "KP/", KEYC_KP_SLASH }, 73 { "KP*", KEYC_KP_STAR }, 74 { "KP-", KEYC_KP_MINUS }, 75 { "KP7", KEYC_KP_SEVEN }, 76 { "KP8", KEYC_KP_EIGHT }, 77 { "KP9", KEYC_KP_NINE }, 78 { "KP+", KEYC_KP_PLUS }, 79 { "KP4", KEYC_KP_FOUR }, 80 { "KP5", KEYC_KP_FIVE }, 81 { "KP6", KEYC_KP_SIX }, 82 { "KP1", KEYC_KP_ONE }, 83 { "KP2", KEYC_KP_TWO }, 84 { "KP3", KEYC_KP_THREE }, 85 { "KPEnter", KEYC_KP_ENTER }, 86 { "KP0", KEYC_KP_ZERO }, 87 { "KP.", KEYC_KP_PERIOD }, 88 }; 89 90 /* Find key string in table. */ 91 int 92 key_string_search_table(const char *string) 93 { 94 u_int i; 95 96 for (i = 0; i < nitems(key_string_table); i++) { 97 if (strcasecmp(string, key_string_table[i].string) == 0) 98 return (key_string_table[i].key); 99 } 100 return (KEYC_NONE); 101 } 102 103 /* Lookup a string and convert to a key value, handling C-/M-/S- prefix. */ 104 int 105 key_string_lookup_string(const char *string) 106 { 107 int key; 108 const u_char *ptr; 109 110 if (string[0] == '\0') 111 return (KEYC_NONE); 112 if (string[1] == '\0') 113 return (string[0]); 114 115 ptr = NULL; 116 if ((string[0] == 'C' || string[0] == 'c') && string[1] == '-') 117 ptr = string + 2; 118 else if (string[0] == '^') 119 ptr = string + 1; 120 if (ptr != NULL) { 121 if (ptr[0] == '\0') 122 return (KEYC_NONE); 123 /* 124 * Lookup as a named key. If a function key (>= KEYC_BASE), 125 * return it with the ctrl modifier, otherwise fallthrough with 126 * the key value from the table (eg for C-Space). If not a 127 * named key, check for single character keys and try that. 128 */ 129 key = key_string_search_table(ptr); 130 if (key != KEYC_NONE) { 131 if (key >= KEYC_BASE) 132 return (key | KEYC_CTRL); 133 } else { 134 if (ptr[1] != '\0') 135 return (KEYC_NONE); 136 key = ptr[0]; 137 } 138 139 /* 140 * Figure out if the single character in key is a valid ctrl 141 * key. 142 */ 143 if (key == 32) 144 return (0); 145 if (key == 63) 146 return (KEYC_BSPACE); 147 if (key >= 64 && key <= 95) 148 return (key - 64); 149 if (key >= 97 && key <= 122) 150 return (key - 96); 151 return (KEYC_NONE); 152 } 153 154 if ((string[0] == 'M' || string[0] == 'm') && string[1] == '-') { 155 ptr = string + 2; 156 if (ptr[0] == '\0') 157 return (KEYC_NONE); 158 key = key_string_lookup_string(ptr); 159 if (key != KEYC_NONE) { 160 if (key >= KEYC_BASE) 161 return (key | KEYC_ESCAPE); 162 } else { 163 if (ptr[1] == '\0') 164 return (KEYC_NONE); 165 key = ptr[0]; 166 } 167 168 if (key >= 32 && key <= 127) 169 return (key | KEYC_ESCAPE); 170 return (KEYC_NONE); 171 } 172 173 return (key_string_search_table(string)); 174 } 175 176 /* Convert a key code into string format, with prefix if necessary. */ 177 const char * 178 key_string_lookup_key(int key) 179 { 180 static char tmp[24], tmp2[24]; 181 const char *s; 182 u_int i; 183 184 if (key == 127) 185 return (NULL); 186 187 if (key & KEYC_ESCAPE) { 188 if ((s = key_string_lookup_key(key & ~KEYC_ESCAPE)) == NULL) 189 return (NULL); 190 xsnprintf(tmp2, sizeof tmp2, "M-%s", s); 191 return (tmp2); 192 } 193 if (key & KEYC_CTRL) { 194 if ((s = key_string_lookup_key(key & ~KEYC_CTRL)) == NULL) 195 return (NULL); 196 xsnprintf(tmp2, sizeof tmp2, "C-%s", s); 197 return (tmp2); 198 } 199 if (key & KEYC_SHIFT) { 200 if ((s = key_string_lookup_key(key & ~KEYC_SHIFT)) == NULL) 201 return (NULL); 202 xsnprintf(tmp2, sizeof tmp2, "S-%s", s); 203 return (tmp2); 204 } 205 206 for (i = 0; i < nitems(key_string_table); i++) { 207 if (key == key_string_table[i].key) 208 return (key_string_table[i].string); 209 } 210 211 if (key >= 32 && key <= 255) { 212 tmp[0] = key; 213 tmp[1] = '\0'; 214 return (tmp); 215 } 216 217 if (key >= 0 && key <= 32) { 218 if (key == 0 || key > 26) 219 xsnprintf(tmp, sizeof tmp, "C-%c", 64 + key); 220 else 221 xsnprintf(tmp, sizeof tmp, "C-%c", 96 + key); 222 return (tmp); 223 } 224 225 return (NULL); 226 } 227