1 /**************************************************************************** 2 * Copyright 2019,2020 Thomas E. Dickey * 3 * Copyright 1998-2012,2014 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Thomas E. Dickey 1997-on * 32 * and: Juergen Pfeifer 2009 * 33 ****************************************************************************/ 34 35 #include <curses.priv.h> 36 37 MODULE_ID("$Id: keyok.c,v 1.16 2020/02/02 23:34:34 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 NCURSES_SP_NAME(keyok) (NCURSES_SP_DCLx int c, bool flag) 51 { 52 int code = ERR; 53 54 if (HasTerminal(SP_PARM)) { 55 T((T_CALLED("keyok(%p, %d,%d)"), (void *) SP_PARM, c, flag)); 56 #ifdef USE_TERM_DRIVER 57 code = CallDriver_2(sp, td_kyOk, c, flag); 58 #else 59 if (c >= 0) { 60 int count = 0; 61 char *s; 62 unsigned ch = (unsigned) c; 63 64 if (flag) { 65 while ((s = _nc_expand_try(SP_PARM->_key_ok, 66 ch, &count, (size_t) 0)) != 0) { 67 if (_nc_remove_key(&(SP_PARM->_key_ok), ch)) { 68 code = _nc_add_to_try(&(SP_PARM->_keytry), s, ch); 69 free(s); 70 count = 0; 71 if (code != OK) 72 break; 73 } else { 74 free(s); 75 } 76 } 77 } else { 78 while ((s = _nc_expand_try(SP_PARM->_keytry, 79 ch, &count, (size_t) 0)) != 0) { 80 if (_nc_remove_key(&(SP_PARM->_keytry), ch)) { 81 code = _nc_add_to_try(&(SP_PARM->_key_ok), s, ch); 82 free(s); 83 count = 0; 84 if (code != OK) 85 break; 86 } else { 87 free(s); 88 } 89 } 90 } 91 } 92 #endif 93 } 94 returnCode(code); 95 } 96 97 #if NCURSES_SP_FUNCS 98 NCURSES_EXPORT(int) 99 keyok(int c, bool flag) 100 { 101 return NCURSES_SP_NAME(keyok) (CURRENT_SCREEN, c, flag); 102 } 103 #endif 104