1/* $OpenBSD: keyok.c,v 1.6 2023/10/17 09:52:08 nicm Exp $ */ 2 3/**************************************************************************** 4 * Copyright 2019-2020,2021 Thomas E. Dickey * 5 * Copyright 1998-2012,2014 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32/**************************************************************************** 33 * Author: Thomas E. Dickey 1997-on * 34 * and: Juergen Pfeifer 2009 * 35 ****************************************************************************/ 36 37#include <curses.priv.h> 38 39MODULE_ID("$Id: keyok.c,v 1.6 2023/10/17 09:52:08 nicm Exp $") 40 41/* 42 * Enable (or disable) ncurses' interpretation of a keycode by adding (or 43 * removing) the corresponding 'tries' entry. 44 * 45 * Do this by storing a second tree of tries, which records the disabled keys. 46 * The simplest way to copy is to make a function that returns the string (with 47 * nulls set to 0200), then use that to reinsert the string into the 48 * corresponding tree. 49 */ 50 51NCURSES_EXPORT(int) 52NCURSES_SP_NAME(keyok) (NCURSES_SP_DCLx int c, bool flag) 53{ 54 int code = ERR; 55 56 if (HasTerminal(SP_PARM)) { 57 T((T_CALLED("keyok(%p, %d,%d)"), (void *) SP_PARM, c, flag)); 58#ifdef USE_TERM_DRIVER 59 code = CallDriver_2(sp, td_kyOk, c, flag); 60#else 61 if (c >= 0) { 62 int count = 0; 63 char *s; 64 unsigned ch = (unsigned) c; 65 66 if (flag) { 67 while ((s = _nc_expand_try(SP_PARM->_key_ok, 68 ch, &count, (size_t) 0)) != 0) { 69 if (_nc_remove_key(&(SP_PARM->_key_ok), ch)) { 70 code = _nc_add_to_try(&(SP_PARM->_keytry), s, ch); 71 free(s); 72 count = 0; 73 if (code != OK) 74 break; 75 } else { 76 free(s); 77 } 78 } 79 } else { 80 while ((s = _nc_expand_try(SP_PARM->_keytry, 81 ch, &count, (size_t) 0)) != 0) { 82 if (_nc_remove_key(&(SP_PARM->_keytry), ch)) { 83 code = _nc_add_to_try(&(SP_PARM->_key_ok), s, ch); 84 free(s); 85 count = 0; 86 if (code != OK) 87 break; 88 } else { 89 free(s); 90 } 91 } 92 } 93 } 94#endif 95 } 96 returnCode(code); 97} 98 99#if NCURSES_SP_FUNCS 100NCURSES_EXPORT(int) 101keyok(int c, bool flag) 102{ 103 return NCURSES_SP_NAME(keyok) (CURRENT_SCREEN, c, flag); 104} 105#endif 106