1 /* $OpenBSD: key_defined.c,v 1.1 2010/01/12 23:22:05 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 2003,2006 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Thomas E. Dickey, 2003 * 33 ****************************************************************************/ 34 35 #include <curses.priv.h> 36 37 MODULE_ID("$Id: key_defined.c,v 1.1 2010/01/12 23:22:05 nicm Exp $") 38 39 static int 40 find_definition(TRIES * tree, const char *str) 41 { 42 TRIES *ptr; 43 int result = OK; 44 45 if (str != 0 && *str != '\0') { 46 for (ptr = tree; ptr != 0; ptr = ptr->sibling) { 47 if (UChar(*str) == UChar(ptr->ch)) { 48 if (str[1] == '\0' && ptr->child != 0) { 49 result = ERR; 50 } else if ((result = find_definition(ptr->child, str + 1)) 51 == OK) { 52 result = ptr->value; 53 } else if (str[1] == '\0') { 54 result = ERR; 55 } 56 } 57 if (result != OK) 58 break; 59 } 60 } 61 return (result); 62 } 63 64 /* 65 * Returns the keycode associated with the given string. If none is found, 66 * return OK. If the string is only a prefix to other strings, return ERR. 67 * Otherwise, return the keycode's value (neither OK/ERR). 68 */ 69 NCURSES_EXPORT(int) 70 key_defined(const char *str) 71 { 72 int code = ERR; 73 74 T((T_CALLED("key_defined(%s)"), _nc_visbuf(str))); 75 if (SP != 0 && str != 0) { 76 code = find_definition(SP->_keytry, str); 77 } 78 79 returnCode(code); 80 } 81