opensc/src/ui/wchar_from_char_str.h

45 lines
1.3 KiB
C

/*
* wchar_from_char_str.h: Conversion from string to wide string
*
* Copyright (C) 2017 Frank Morgner <frankmorgner@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
static WCHAR *wchar_from_char_str(const char *in)
{
WCHAR *out;
int out_len;
if (!in)
return NULL;
out_len = MultiByteToWideChar(CP_UTF8, 0, in, -1, NULL, 0);
if (0 >= out_len)
return NULL;
out = LocalAlloc(0, (sizeof *out) * out_len);
if (!out)
return NULL;
out_len = MultiByteToWideChar(CP_UTF8, 0, in, -1, out, out_len);
if (out_len == 0xFFFD || 0 >= out_len) {
LocalFree(out);
return NULL;
}
return out;
}