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87 lines
3.5 KiB
C
87 lines
3.5 KiB
C
/****************************************************************************
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* Copyright (c) 2003-2006,2009 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Thomas E. Dickey, 2003 *
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****************************************************************************/
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#include <curses.priv.h>
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MODULE_ID("$Id: key_defined.c,v 1.8 2009/02/21 16:24:26 tom Exp $")
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static int
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find_definition(TRIES * tree, const char *str)
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{
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TRIES *ptr;
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int result = OK;
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if (str != 0 && *str != '\0') {
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for (ptr = tree; ptr != 0; ptr = ptr->sibling) {
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if (UChar(*str) == UChar(ptr->ch)) {
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if (str[1] == '\0' && ptr->child != 0) {
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result = ERR;
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} else if ((result = find_definition(ptr->child, str + 1))
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== OK) {
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result = ptr->value;
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} else if (str[1] == '\0') {
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result = ERR;
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}
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}
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if (result != OK)
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break;
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}
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}
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return (result);
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}
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/*
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* Returns the keycode associated with the given string. If none is found,
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* return OK. If the string is only a prefix to other strings, return ERR.
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* Otherwise, return the keycode's value (neither OK/ERR).
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*/
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NCURSES_EXPORT(int)
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NCURSES_SP_NAME(key_defined) (NCURSES_SP_DCLx const char *str)
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{
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int code = ERR;
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T((T_CALLED("key_defined(%p, %s)"), SP_PARM, _nc_visbuf(str)));
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if (SP_PARM != 0 && str != 0) {
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code = find_definition(SP_PARM->_keytry, str);
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}
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returnCode(code);
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}
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#if NCURSES_SP_FUNCS
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NCURSES_EXPORT(int)
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key_defined(const char *str)
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{
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return NCURSES_SP_NAME(key_defined) (CURRENT_SCREEN, str);
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}
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#endif
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