150276Speter/**************************************************************************** 2166124Srafan * Copyright (c) 1998-2000,2006 Free Software Foundation, Inc. * 350276Speter * * 450276Speter * Permission is hereby granted, free of charge, to any person obtaining a * 550276Speter * copy of this software and associated documentation files (the * 650276Speter * "Software"), to deal in the Software without restriction, including * 750276Speter * without limitation the rights to use, copy, modify, merge, publish, * 850276Speter * distribute, distribute with modifications, sublicense, and/or sell * 950276Speter * copies of the Software, and to permit persons to whom the Software is * 1050276Speter * furnished to do so, subject to the following conditions: * 1150276Speter * * 1250276Speter * The above copyright notice and this permission notice shall be included * 1350276Speter * in all copies or substantial portions of the Software. * 1450276Speter * * 1550276Speter * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 1650276Speter * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 1750276Speter * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 1850276Speter * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 1950276Speter * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 2050276Speter * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 2150276Speter * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 2250276Speter * * 2350276Speter * Except as contained in this notice, the name(s) of the above copyright * 2450276Speter * holders shall not be used in advertising or otherwise to promote the * 2550276Speter * sale, use or other dealings in this Software without prior written * 2650276Speter * authorization. * 2750276Speter ****************************************************************************/ 2850276Speter 2950276Speter/**************************************************************************** 30174993Srafan * Author: Thomas E. Dickey 1997-on * 3150276Speter ****************************************************************************/ 3250276Speter 3350276Speter#include <curses.priv.h> 3450276Speter 35174993SrafanMODULE_ID("$Id: keyok.c,v 1.7 2006/12/30 16:22:33 tom Exp $") 3650276Speter 3750276Speter/* 3850276Speter * Enable (or disable) ncurses' interpretation of a keycode by adding (or 3950276Speter * removing) the corresponding 'tries' entry. 4050276Speter * 4150276Speter * Do this by storing a second tree of tries, which records the disabled keys. 4250276Speter * The simplest way to copy is to make a function that returns the string (with 4350276Speter * nulls set to 0200), then use that to reinsert the string into the 4450276Speter * corresponding tree. 4550276Speter */ 4650276Speter 4776726SpeterNCURSES_EXPORT(int) 4876726Speterkeyok(int c, bool flag) 4950276Speter{ 5076726Speter int code = ERR; 5176726Speter int count = 0; 5276726Speter char *s; 5350276Speter 5476726Speter T((T_CALLED("keyok(%d,%d)"), c, flag)); 55166124Srafan if (c >= 0) { 56166124Srafan unsigned ch = (unsigned) c; 57166124Srafan if (flag) { 58166124Srafan while ((s = _nc_expand_try(SP->_key_ok, ch, &count, 0)) != 0 59166124Srafan && _nc_remove_key(&(SP->_key_ok), ch)) { 60174993Srafan code = _nc_add_to_try(&(SP->_keytry), s, ch); 61166124Srafan free(s); 62166124Srafan count = 0; 63174993Srafan if (code != OK) 64174993Srafan break; 65166124Srafan } 66166124Srafan } else { 67166124Srafan while ((s = _nc_expand_try(SP->_keytry, ch, &count, 0)) != 0 68166124Srafan && _nc_remove_key(&(SP->_keytry), ch)) { 69174993Srafan code = _nc_add_to_try(&(SP->_key_ok), s, ch); 70166124Srafan free(s); 71166124Srafan count = 0; 72174993Srafan if (code != OK) 73174993Srafan break; 74166124Srafan } 7550276Speter } 7676726Speter } 7776726Speter returnCode(code); 7850276Speter} 79