/* Conversion UCS-4 to UTF-16.
- Copyright (C) 2002 Free Software Foundation, Inc.
- Written by Bruno Haible <haible@clisp.cons.org>, 2002.
+ Copyright (C) 2002, 2005-2007 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2002.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+ 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 General Public License for more details.
+ 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 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. */
+ 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 _UCS4_UTF16_H
+#define _UCS4_UTF16_H
#include <stddef.h>
+#include "unitypes.h"
+
+extern int u16_uctomb_aux (uint16_t *s, ucs4_t uc, int n);
/* Return the length (number of units) of the UTF-16 representation of uc,
after storing it at S. Return -1 upon failure, -2 if the number of
available units, N, is too small. */
-static int
-u16_uctomb_aux (unsigned short *s, unsigned int uc, int n)
-{
- if (uc >= 0x10000)
- {
- if (uc < 0x110000)
- {
- if (n >= 2)
- {
- s[0] = 0xd800 + ((uc - 0x10000) >> 10);
- s[1] = 0xdc00 + ((uc - 0x10000) & 0x3ff);
- return 2;
- }
- }
- else
- return -1;
- }
- return -2;
-}
-
static inline int
-u16_uctomb (unsigned short *s, unsigned int uc, int n)
+u16_uctomb (uint16_t *s, ucs4_t uc, int n)
{
- if (uc < 0x10000 && n > 0)
+ if (uc < 0xd800 && n > 0)
{
s[0] = uc;
return 1;
else
return u16_uctomb_aux (s, uc, n);
}
+
+#endif /* _UCS4_UTF16_H */