1 /* $OpenBSD: key_defined.c,v 1.2 2023/10/17 09:52:08 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright 2020,2023 Thomas E. Dickey * 5 * Copyright 2003-2006,2009 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32 /**************************************************************************** 33 * Author: Thomas E. Dickey, 2003 * 34 ****************************************************************************/ 35 36 #include <curses.priv.h> 37 #include <tic.h> 38 39 MODULE_ID("$Id: key_defined.c,v 1.2 2023/10/17 09:52:08 nicm Exp $") 40 41 static int 42 find_definition(TRIES * tree, const char *str) 43 { 44 TRIES *ptr; 45 int result = OK; 46 47 if (VALID_STRING(str) && *str != '\0') { 48 for (ptr = tree; ptr != 0; ptr = ptr->sibling) { 49 if (UChar(*str) == UChar(ptr->ch)) { 50 if (str[1] == '\0' && ptr->child != 0) { 51 result = ERR; 52 } else if ((result = find_definition(ptr->child, str + 1)) 53 == OK) { 54 result = ptr->value; 55 } else if (str[1] == '\0') { 56 result = ERR; 57 } 58 } 59 if (result != OK) 60 break; 61 } 62 } 63 return (result); 64 } 65 66 /* 67 * Returns the keycode associated with the given string. If none is found, 68 * return OK. If the string is only a prefix to other strings, return ERR. 69 * Otherwise, return the keycode's value (neither OK/ERR). 70 */ 71 NCURSES_EXPORT(int) 72 NCURSES_SP_NAME(key_defined) (NCURSES_SP_DCLx const char *str) 73 { 74 int code = ERR; 75 76 T((T_CALLED("key_defined(%p, %s)"), (void *) SP_PARM, _nc_visbuf(str))); 77 if (SP_PARM != 0 && str != 0) { 78 code = find_definition(SP_PARM->_keytry, str); 79 } 80 81 returnCode(code); 82 } 83 84 #if NCURSES_SP_FUNCS 85 NCURSES_EXPORT(int) 86 key_defined(const char *str) 87 { 88 return NCURSES_SP_NAME(key_defined) (CURRENT_SCREEN, str); 89 } 90 #endif 91