1 /* $OpenBSD: charable.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 2003-2005,2008 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /* 32 ** Support functions for wide/narrow conversion. 33 */ 34 35 #include <curses.priv.h> 36 37 MODULE_ID("$Id: charable.c,v 1.1 2010/09/06 17:26:17 nicm Exp $") 38 39 NCURSES_EXPORT(bool) _nc_is_charable(wchar_t ch) 40 { 41 bool result; 42 #if HAVE_WCTOB 43 result = (wctob((wint_t) ch) == (int) ch); 44 #else 45 result = (_nc_to_char(ch) >= 0); 46 #endif 47 return result; 48 } 49 50 NCURSES_EXPORT(int) _nc_to_char(wint_t ch) 51 { 52 int result; 53 #if HAVE_WCTOB 54 result = wctob(ch); 55 #elif HAVE_WCTOMB 56 char temp[MB_LEN_MAX]; 57 result = wctomb(temp, ch); 58 if (strlen(temp) == 1) 59 result = UChar(temp[0]); 60 else 61 result = -1; 62 #endif 63 return result; 64 } 65 66 NCURSES_EXPORT(wint_t) _nc_to_widechar(int ch) 67 { 68 wint_t result; 69 #if HAVE_BTOWC 70 result = btowc(ch); 71 #elif HAVE_MBTOWC 72 wchar_t convert; 73 char temp[2]; 74 temp[0] = ch; 75 temp[1] = '\0'; 76 if (mbtowc(&convert, temp, 1) >= 0) 77 result = convert; 78 else 79 result = WEOF; 80 #endif 81 return result; 82 } 83