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/*
* Copyright (c) 2003-2004, Artem B. Bityuckiy
* Copyright (c) 1999,2000, Konstantin Chuguev. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "cesbi.h"
#if defined (ICONV_TO_UCS_CES_UCS_4) \
|| defined (ICONV_FROM_UCS_CES_UCS_4)
#include <_ansi.h>
#include <reent.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "../lib/local.h"
#include "../lib/ucsconv.h"
#include "../lib/endian.h"
/*
* BOM isn't supported. UCS-4 is Big Endian. Bad codes are rejected.
* Bad codes: 0x0000FFFF, 0x0000FFFE, 0x0000D800-0x0000DFFF,
* 0x7FFFFFFF-0xFFFFFFFF.
*/
#define UCS_4_BIG_ENDIAN 0
#define UCS_4_LITTLE_ENDIAN 1
#define UCS_4 "ucs_4"
#define UCS_4BE "ucs_4be"
#define UCS_4LE "ucs_4le"
static _VOID_PTR
_DEFUN(ucs_4_init, (rptr, encoding),
struct _reent *rptr _AND
_CONST char *encoding)
{
int *data;
if ((data = (int *)_malloc_r (rptr, sizeof(int))) == NULL)
return (_VOID_PTR)NULL;
if (strcmp (encoding, UCS_4LE) == 0)
*data = UCS_4_LITTLE_ENDIAN;
else
*data = UCS_4_BIG_ENDIAN;
return (_VOID_PTR)data;
}
static size_t
_DEFUN(ucs_4_close, (rptr, data),
struct _reent *rptr _AND
_VOID_PTR data)
{
_free_r(rptr, data);
return 0;
}
#if defined (ICONV_FROM_UCS_CES_UCS_4)
static size_t
_DEFUN(ucs_4_convert_from_ucs, (data, in, outbuf, outbytesleft),
_VOID_PTR data _AND
ucs4_t in _AND
unsigned char **outbuf _AND
size_t *outbytesleft)
{
if ((in >= 0x0000D800 && in <= 0x0000DFFF) /* Surrogate character */
|| in > 0x7FFFFFFF || in == 0x0000FFFF || in == 0x0000FFFE)
return (size_t)ICONV_CES_INVALID_CHARACTER;
if (*outbytesleft < sizeof (ucs4_t))
return (size_t)ICONV_CES_NOSPACE;
if (*((int *)data) == UCS_4_BIG_ENDIAN)
*((ucs4_t *)(*outbuf)) = ICONV_HTOBEL (in);
else
*((ucs4_t *)(*outbuf)) = ICONV_HTOLEL (in);
*outbuf += sizeof (ucs4_t);
*outbytesleft -= sizeof (ucs4_t);
return sizeof (ucs4_t);
}
#endif /* ICONV_FROM_UCS_CES_UCS_4 */
#if defined (ICONV_TO_UCS_CES_UCS_4)
static ucs4_t
_DEFUN(ucs_4_convert_to_ucs, (data, inbuf, inbytesleft),
_VOID_PTR data _AND
_CONST unsigned char **inbuf _AND
size_t *inbytesleft)
{
ucs4_t res;
if (*inbytesleft < sizeof (ucs4_t))
return (ucs4_t)ICONV_CES_BAD_SEQUENCE;
if (*((int *)data) == UCS_4_BIG_ENDIAN)
res = ICONV_BETOHL (*((ucs4_t *)(*inbuf)));
else
res = ICONV_LETOHL (*((ucs4_t *)(*inbuf)));
if ((res >= 0x0000D800 && res <= 0x0000DFFF) /* Surrogate character */
|| res > 0x7FFFFFFF || res == 0x0000FFFF || res == 0x0000FFFE)
return (ucs4_t)ICONV_CES_INVALID_CHARACTER;
*inbytesleft -= sizeof (ucs4_t);
*inbuf += sizeof(ucs4_t);
return res;
}
#endif /* ICONV_TO_UCS_CES_UCS_4 */
static int
_DEFUN(ucs_4_get_mb_cur_max, (data),
_VOID_PTR data)
{
return 4;
}
#if defined (ICONV_TO_UCS_CES_UCS_4)
_CONST iconv_to_ucs_ces_handlers_t
_iconv_to_ucs_ces_handlers_ucs_4 =
{
ucs_4_init,
ucs_4_close,
ucs_4_get_mb_cur_max,
NULL,
NULL,
NULL,
ucs_4_convert_to_ucs
};
#endif
#if defined (ICONV_FROM_UCS_CES_UCS_4)
_CONST iconv_from_ucs_ces_handlers_t
_iconv_from_ucs_ces_handlers_ucs_4 =
{
ucs_4_init,
ucs_4_close,
ucs_4_get_mb_cur_max,
NULL,
NULL,
NULL,
ucs_4_convert_from_ucs
};
#endif
#endif /* ICONV_TO_UCS_CES_UCS_4 || ICONV_FROM_UCS_CES_UCS_4 */
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