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/* $OpenBSD: key_defined.c,v 1.1 2010/01/12 23:22:05 nicm Exp $ */ |
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/**************************************************************************** |
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* Copyright (c) 2003,2006 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 1.1 2010/01/12 23:22:05 nicm 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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key_defined(const char *str) |
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{ |
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int code = ERR; |
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T((T_CALLED("key_defined(%s)"), _nc_visbuf(str))); |
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if (SP != 0 && str != 0) { |
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code = find_definition(SP->_keytry, str); |
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} |
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returnCode(code); |
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} |