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/*
* $Id$
*
* Copyright (C) 2003 Red Hat, Inc.
*
* 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
*
* Original Author: Adrian Havill <havill@redhat.com>
*
* Contributors:
*/
#include "wlite_config.h" // wchar_t, NULL, size_t
#include "wlite_wchar.h" // prototypes
#include "wlite_wctype.h"
#include "wlite_stdlib.h"
size_t
wlite_mbstowcs(wchar_t *wcs, const char *s, size_t n) {
wlite_mbstate_t internal = { 0 }; // always begin in initial state
size_t stored = 0;
while (n != 0) {
size_t length;
#if WLITE_GENERATE_SURROGATES || !WLITE_XBMP_CHAR
if (n > 1) {
internal.flags_ |= WLITE_MBSTATE_SURROGATE_;
}
else internal.flags_ &= ~WLITE_MBSTATE_SURROGATE_;
#endif
length = wlite_mbrtowc(wcs, s, n, &internal);
wcs += (size_t) internal.wcout_;
n -= (size_t) internal.wcout_;
if (length == (size_t) -1 || length == (size_t) -2) return (size_t) -1;
else if (length == 0) break;
else {
stored += length;
s += length;
}
}
return stored;
}
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