1/****************************************************************************
2 * Copyright (c) 2003 Free Software Foundation, Inc.                        *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
7 * without limitation the rights to use, copy, modify, merge, publish,      *
8 * distribute, distribute with modifications, sublicense, and/or sell       *
9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 *                                                                          *
23 * Except as contained in this notice, the name(s) of the above copyright   *
24 * holders shall not be used in advertising or otherwise to promote the     *
25 * sale, use or other dealings in this Software without prior written       *
26 * authorization.                                                           *
27 ****************************************************************************/
28
29/****************************************************************************
30 *  Author: Thomas E. Dickey, 2003                                          *
31 ****************************************************************************/
32
33#include <curses.priv.h>
34
35MODULE_ID("$Id: key_defined.c,v 1.3 2003/05/17 23:12:27 tom Exp $")
36
37static int
38find_definition(struct tries *tree, const char *str)
39{
40    struct tries *ptr;
41    int result = 0;
42
43    if (str != 0 && *str != '\0') {
44	for (ptr = tree; ptr != 0; ptr = ptr->sibling) {
45	    if (UChar(*str) == UChar(ptr->ch)) {
46		if (str[1] == '\0' && ptr->child != 0) {
47		    result = -1;
48		} else if ((result = find_definition(ptr->child, str + 1)) == 0) {
49		    result = ptr->value;
50		} else if (str[1] == '\0') {
51		    result = -1;
52		}
53	    }
54	    if (result != 0)
55		break;
56	}
57    }
58    return (result);
59}
60
61/*
62 * Returns the keycode associated with the given string.  If none is found,
63 * return 0.  If the string is only a prefix to other strings, return -1.
64 */
65NCURSES_EXPORT(int)
66key_defined(const char *str)
67{
68    int code = ERR;
69
70    T((T_CALLED("key_defined(%s)"), _nc_visbuf(str)));
71    if (SP != 0 && str != 0) {
72	code = find_definition(SP->_keytry, str);
73    }
74
75    returnCode(code);
76}
77