1 /**************************************************************************** 2 * Copyright (c) 2003-2005,2008 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 ** Support functions for wide/narrow conversion. 31 */ 32 33 #include <curses.priv.h> 34 35 MODULE_ID("$Id: charable.c,v 1.5 2008/07/05 20:51:41 tom Exp $") 36 37 NCURSES_EXPORT(bool) _nc_is_charable(wchar_t ch) 38 { 39 bool result; 40 #if HAVE_WCTOB 41 result = (wctob((wint_t) ch) == (int) ch); 42 #else 43 result = (_nc_to_char(ch) >= 0); 44 #endif 45 return result; 46 } 47 48 NCURSES_EXPORT(int) _nc_to_char(wint_t ch) 49 { 50 int result; 51 #if HAVE_WCTOB 52 result = wctob(ch); 53 #elif HAVE_WCTOMB 54 char temp[MB_LEN_MAX]; 55 result = wctomb(temp, ch); 56 if (strlen(temp) == 1) 57 result = UChar(temp[0]); 58 else 59 result = -1; 60 #endif 61 return result; 62 } 63 64 NCURSES_EXPORT(wint_t) _nc_to_widechar(int ch) 65 { 66 wint_t result; 67 #if HAVE_BTOWC 68 result = btowc(ch); 69 #elif HAVE_MBTOWC 70 wchar_t convert; 71 char temp[2]; 72 temp[0] = ch; 73 temp[1] = '\0'; 74 if (mbtowc(&convert, temp, 1) >= 0) 75 result = convert; 76 else 77 result = WEOF; 78 #endif 79 return result; 80 } 81