/* Conversion UTF-16 to UCS-4.
Copyright (C) 2001-2002, 2005-2007 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2001.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published
by the Free Software Foundation; either version 2, or (at your option)
any later version.
This program 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA. */
#ifndef _UTF16_UCS4_SAFE_H
#define _UTF16_UCS4_SAFE_H
#include <stddef.h>
#include "unitypes.h"
extern int u16_mbtouc_safe_aux (ucs4_t *puc, const uint16_t *s, size_t n);
/* Return the length (number of units) of the first character in S, putting
its 'ucs4_t' representation in *PUC.
The number of available units, N, must be > 0. */
static inline int
u16_mbtouc_safe (ucs4_t *puc, const uint16_t *s, size_t n)
{
uint16_t c = *s;
if (c < 0xd800 || c >= 0xe000)
{
*puc = c;
return 1;
}
else
return u16_mbtouc_safe_aux (puc, s, n);
}
#endif /* _UTF16_UCS4_SAFE_H */
