| Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 1 | /**************************************************************************** |
| 2 | * Copyright (c) 1998-2000,2006 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 1997-on * |
| 31 | ****************************************************************************/ |
| 32 | |
| 33 | #include <curses.priv.h> |
| 34 | |
| 35 | MODULE_ID("$Id: keyok.c,v 1.7 2006/12/30 16:22:33 tom Exp $") |
| 36 | |
| 37 | /* |
| 38 | * Enable (or disable) ncurses' interpretation of a keycode by adding (or |
| 39 | * removing) the corresponding 'tries' entry. |
| 40 | * |
| 41 | * Do this by storing a second tree of tries, which records the disabled keys. |
| 42 | * The simplest way to copy is to make a function that returns the string (with |
| 43 | * nulls set to 0200), then use that to reinsert the string into the |
| 44 | * corresponding tree. |
| 45 | */ |
| 46 | |
| 47 | NCURSES_EXPORT(int) |
| 48 | keyok(int c, bool flag) |
| 49 | { |
| 50 | int code = ERR; |
| 51 | int count = 0; |
| 52 | char *s; |
| 53 | |
| 54 | T((T_CALLED("keyok(%d,%d)"), c, flag)); |
| 55 | if (c >= 0) { |
| 56 | unsigned ch = (unsigned) c; |
| 57 | if (flag) { |
| 58 | while ((s = _nc_expand_try(SP->_key_ok, ch, &count, 0)) != 0 |
| 59 | && _nc_remove_key(&(SP->_key_ok), ch)) { |
| 60 | code = _nc_add_to_try(&(SP->_keytry), s, ch); |
| 61 | free(s); |
| 62 | count = 0; |
| 63 | if (code != OK) |
| 64 | break; |
| 65 | } |
| 66 | } else { |
| 67 | while ((s = _nc_expand_try(SP->_keytry, ch, &count, 0)) != 0 |
| 68 | && _nc_remove_key(&(SP->_keytry), ch)) { |
| 69 | code = _nc_add_to_try(&(SP->_key_ok), s, ch); |
| 70 | free(s); |
| 71 | count = 0; |
| 72 | if (code != OK) |
| 73 | break; |
| 74 | } |
| 75 | } |
| 76 | } |
| 77 | returnCode(code); |
| 78 | } |