1 /* $OpenBSD: keyok.c,v 1.3 2001/01/22 18:01:37 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998,2000 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 <dickey@clark.net> 1997 * 33 ****************************************************************************/ 34 35 #include <curses.priv.h> 36 37 MODULE_ID("$From: keyok.c,v 1.5 2000/12/10 02:43:26 tom Exp $") 38 39 /* 40 * Enable (or disable) ncurses' interpretation of a keycode by adding (or 41 * removing) the corresponding 'tries' entry. 42 * 43 * Do this by storing a second tree of tries, which records the disabled keys. 44 * The simplest way to copy is to make a function that returns the string (with 45 * nulls set to 0200), then use that to reinsert the string into the 46 * corresponding tree. 47 */ 48 49 NCURSES_EXPORT(int) 50 keyok(int c, bool flag) 51 { 52 int code = ERR; 53 int count = 0; 54 char *s; 55 56 T((T_CALLED("keyok(%d,%d)"), c, flag)); 57 if (flag) { 58 while ((s = _nc_expand_try(SP->_key_ok, c, &count, 0)) != 0 59 && _nc_remove_key(&(SP->_key_ok), c)) { 60 _nc_add_to_try(&(SP->_keytry), s, c); 61 free(s); 62 code = OK; 63 count = 0; 64 } 65 } else { 66 while ((s = _nc_expand_try(SP->_keytry, c, &count, 0)) != 0 67 && _nc_remove_key(&(SP->_keytry), c)) { 68 _nc_add_to_try(&(SP->_key_ok), s, c); 69 free(s); 70 code = OK; 71 count = 0; 72 } 73 } 74 returnCode(code); 75 } 76