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/* Look at first character in UTF-32 string.
Copyright (C) 2002, 2006-2007, 2009-2025 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2002.
This file 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 file 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 program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#if defined IN_LIBUNISTRING
/* Tell unistr.h to declare u32_mbtouc_unsafe as 'extern', not
'static inline'. */
# include "unistring-notinline.h"
#endif
/* Specification. */
#include "unistr.h"
#if !HAVE_INLINE
int
u32_mbtouc_unsafe (ucs4_t *puc, const uint32_t *s, size_t n)
{
uint32_t c = *s;
if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
*puc = c;
else
/* invalid multibyte character */
*puc = 0xfffd;
return 1;
}
#endif
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