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/* $OpenBSD: charable.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */
/****************************************************************************
* Copyright (c) 2003-2005,2008 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/*
** Support functions for wide/narrow conversion.
*/
#include <curses.priv.h>
MODULE_ID("$Id: charable.c,v 1.1 2010/09/06 17:26:17 nicm Exp $")
NCURSES_EXPORT(bool) _nc_is_charable(wchar_t ch)
{
bool result;
#if HAVE_WCTOB
result = (wctob((wint_t) ch) == (int) ch);
#else
result = (_nc_to_char(ch) >= 0);
#endif
return result;
}
NCURSES_EXPORT(int) _nc_to_char(wint_t ch)
{
int result;
#if HAVE_WCTOB
result = wctob(ch);
#elif HAVE_WCTOMB
char temp[MB_LEN_MAX];
result = wctomb(temp, ch);
if (strlen(temp) == 1)
result = UChar(temp[0]);
else
result = -1;
#endif
return result;
}
NCURSES_EXPORT(wint_t) _nc_to_widechar(int ch)
{
wint_t result;
#if HAVE_BTOWC
result = btowc(ch);
#elif HAVE_MBTOWC
wchar_t convert;
char temp[2];
temp[0] = ch;
temp[1] = '\0';
if (mbtowc(&convert, temp, 1) >= 0)
result = convert;
else
result = WEOF;
#endif
return result;
}
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