1 /**************************************************************************** 2 * Copyright 2018,2020 Thomas E. Dickey * 3 * Copyright 2003-2005,2008 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 ** Support functions for wide/narrow conversion. 32 */ 33 34 #include <curses.priv.h> 35 36 MODULE_ID("$Id: charable.c,v 1.8 2020/02/02 23:34:34 tom Exp $") 37 38 NCURSES_EXPORT(bool) _nc_is_charable(wchar_t ch) 39 { 40 bool result; 41 #if HAVE_WCTOB 42 result = (wctob((wint_t) ch) == (int) ch); 43 #else 44 result = (_nc_to_char(ch) >= 0); 45 #endif 46 return result; 47 } 48 49 NCURSES_EXPORT(int) _nc_to_char(wint_t ch) 50 { 51 int result; 52 #if HAVE_WCTOB 53 result = wctob(ch); 54 #elif HAVE_WCTOMB 55 char temp[MB_LEN_MAX]; 56 result = wctomb(temp, ch); 57 if (strlen(temp) == 1) 58 result = UChar(temp[0]); 59 else 60 result = -1; 61 #else 62 #error expected either wctob/wctomb 63 #endif 64 return result; 65 } 66 67 NCURSES_EXPORT(wint_t) _nc_to_widechar(int ch) 68 { 69 wint_t result; 70 #if HAVE_BTOWC 71 result = btowc(ch); 72 #elif HAVE_MBTOWC 73 wchar_t convert; 74 char temp[2]; 75 temp[0] = ch; 76 temp[1] = '\0'; 77 if (mbtowc(&convert, temp, 1) >= 0) 78 result = convert; 79 else 80 result = WEOF; 81 #else 82 #error expected either btowc/mbtowc 83 #endif 84 return result; 85 } 86