mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-28 05:51:04 +00:00
307 lines
8.0 KiB
C
307 lines
8.0 KiB
C
/*
|
|
* 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_UTF_16) \
|
|
|| defined (ICONV_FROM_UCS_CES_UTF_16)
|
|
|
|
#include <_ansi.h>
|
|
#include <reent.h>
|
|
#include <sys/types.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#include "../lib/local.h"
|
|
#include "../lib/ucsconv.h"
|
|
#include "../lib/endian.h"
|
|
|
|
/*
|
|
* On input UTF-16 converter interpret BOM and uses Big Endian byte order if BOM
|
|
* is absent. UTF-16 converter outputs in System Endian and adds correspondent
|
|
* BOM as first code. UTF-16LE and UTF-16BE converters ignore BOM on input and
|
|
* don't output BOM.
|
|
*/
|
|
|
|
#define UTF16_UNDEFINED 0x00
|
|
#define UTF16_BIG_ENDIAN 0x01
|
|
#define UTF16_LITTLE_ENDIAN 0x02
|
|
#define UTF16_SYSTEM_ENDIAN 0x04
|
|
#define UTF16_BOM_WRITTEN 0x08
|
|
|
|
#define UTF16_BOM 0xFEFF
|
|
|
|
#define UTF_16 "utf_16"
|
|
#define UTF_16BE "utf_16be"
|
|
#define UTF_16LE "utf_16le"
|
|
|
|
static size_t
|
|
_DEFUN(utf_16_close, (rptr, data),
|
|
struct _reent *rptr _AND
|
|
_VOID_PTR data)
|
|
{
|
|
_free_r(rptr, data);
|
|
return 0;
|
|
}
|
|
|
|
#if defined (ICONV_FROM_UCS_CES_UTF_16)
|
|
static _VOID_PTR
|
|
_DEFUN(utf_16_init_from_ucs, (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, UTF_16LE) == 0)
|
|
*data = UTF16_LITTLE_ENDIAN;
|
|
else if (strcmp (encoding, UTF_16BE) == 0)
|
|
*data = UTF16_BIG_ENDIAN;
|
|
else
|
|
*data = UTF16_SYSTEM_ENDIAN;
|
|
|
|
return (_VOID_PTR)data;
|
|
}
|
|
|
|
static size_t
|
|
_DEFUN(utf_16_convert_from_ucs, (data, in, outbuf, outbytesleft),
|
|
_VOID_PTR data _AND
|
|
register ucs4_t in _AND
|
|
unsigned char **outbuf _AND
|
|
size_t *outbytesleft)
|
|
{
|
|
register ucs2_t *cp;
|
|
register size_t bytes;
|
|
register int *state;
|
|
|
|
if (in > 0x0010FFFF || (in >= 0x0000D800 && in <= 0x0000DFFF)
|
|
|| in == 0x0000FFFF || in == 0x0000FFFE)
|
|
return (size_t)ICONV_CES_INVALID_CHARACTER;
|
|
|
|
state = (int *)data;
|
|
bytes = (*state == UTF16_SYSTEM_ENDIAN) ? sizeof (ucs2_t) * 2
|
|
: sizeof (ucs2_t);
|
|
|
|
if (in > 0x0000FFFF)
|
|
bytes += sizeof (ucs2_t);
|
|
|
|
if (*outbytesleft < bytes)
|
|
return (size_t)ICONV_CES_NOSPACE;
|
|
|
|
cp = (ucs2_t *)*outbuf;
|
|
|
|
if (*state == UTF16_SYSTEM_ENDIAN)
|
|
{
|
|
*cp++ = UTF16_BOM;
|
|
*state |= UTF16_BOM_WRITTEN;
|
|
}
|
|
|
|
if (in < 0x00010000)
|
|
{
|
|
switch (*state)
|
|
{
|
|
case UTF16_LITTLE_ENDIAN:
|
|
*cp = ICONV_HTOLES ((ucs2_t)in);
|
|
break;
|
|
case UTF16_BIG_ENDIAN:
|
|
*cp = ICONV_HTOBES ((ucs2_t)in);
|
|
break;
|
|
case (UTF16_SYSTEM_ENDIAN | UTF16_BOM_WRITTEN):
|
|
*cp = (ucs2_t)in;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ucs2_t w1, w2;
|
|
|
|
/* Process surrogate pair */
|
|
in -= 0x00010000;
|
|
w1 = ((ucs2_t)((in >> 10)) & 0x03FF) | 0xD800;
|
|
w2 = (ucs2_t)(in & 0x000003FF) | 0xDC00;
|
|
|
|
switch (*state)
|
|
{
|
|
case UTF16_LITTLE_ENDIAN:
|
|
*cp++ = ICONV_HTOLES (w1);
|
|
*cp = ICONV_HTOLES (w2);
|
|
break;
|
|
case UTF16_BIG_ENDIAN:
|
|
*cp++ = ICONV_HTOBES (w1);
|
|
*cp = ICONV_HTOBES (w2);
|
|
break;
|
|
case (UTF16_SYSTEM_ENDIAN | UTF16_BOM_WRITTEN):
|
|
*cp++ = w1;
|
|
*cp = w2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
*outbuf += bytes;
|
|
*outbytesleft -= bytes;
|
|
|
|
return bytes;
|
|
}
|
|
#endif /* ICONV_FROM_UCS_CES_UTF_16 */
|
|
|
|
#if defined (ICONV_TO_UCS_CES_UTF_16)
|
|
static _VOID_PTR
|
|
_DEFUN(utf_16_init_to_ucs, (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, UTF_16BE) == 0)
|
|
*data = UTF16_BIG_ENDIAN;
|
|
else if (strcmp (encoding, UTF_16LE) == 0)
|
|
*data = UTF16_LITTLE_ENDIAN;
|
|
else
|
|
*data = UTF16_UNDEFINED;
|
|
|
|
return (_VOID_PTR)data;
|
|
}
|
|
|
|
static ucs4_t
|
|
_DEFUN(utf_16_convert_to_ucs, (data, inbuf, inbytesleft),
|
|
_VOID_PTR data _AND
|
|
_CONST unsigned char **inbuf _AND
|
|
size_t *inbytesleft)
|
|
{
|
|
register ucs2_t w1;
|
|
register ucs2_t w2;
|
|
register ucs2_t *cp;
|
|
int *state;
|
|
ucs4_t res;
|
|
int bytes = sizeof (ucs2_t);
|
|
|
|
if (*inbytesleft < bytes)
|
|
return (ucs4_t)ICONV_CES_BAD_SEQUENCE;
|
|
|
|
state = (int *)data;
|
|
cp = ((ucs2_t *)*inbuf);
|
|
|
|
if (*state == UTF16_UNDEFINED)
|
|
{
|
|
if (*cp == ICONV_HTOLES(UTF16_BOM))
|
|
*state = UTF16_LITTLE_ENDIAN;
|
|
else
|
|
*state = UTF16_BIG_ENDIAN;
|
|
|
|
if ( *cp == ICONV_HTOBES (UTF16_BOM)
|
|
|| *cp == ICONV_HTOLES (UTF16_BOM))
|
|
{
|
|
if (*inbytesleft < (bytes += sizeof (ucs2_t)))
|
|
return (ucs4_t)ICONV_CES_BAD_SEQUENCE;
|
|
cp += 1;
|
|
}
|
|
}
|
|
|
|
if (*state == UTF16_LITTLE_ENDIAN)
|
|
w1 = ICONV_LETOHS (*cp);
|
|
else
|
|
w1 = ICONV_BETOHS (*cp);
|
|
|
|
if (w1 < 0xD800 || w1 > 0xDFFF)
|
|
{
|
|
if (w1 == 0xFFFF || w1 == 0xFFFE)
|
|
return (ucs4_t)ICONV_CES_INVALID_CHARACTER;
|
|
res = (ucs4_t)w1;
|
|
}
|
|
else
|
|
{
|
|
/* Process surrogate pair */
|
|
if (*inbytesleft < (bytes += 2))
|
|
return (ucs4_t)ICONV_CES_BAD_SEQUENCE;
|
|
|
|
if (w1 > 0xDBFF)
|
|
/* Broken surrogate character */
|
|
return (ucs4_t)ICONV_CES_INVALID_CHARACTER;
|
|
|
|
cp += 1;
|
|
|
|
if (*state == UTF16_LITTLE_ENDIAN)
|
|
w2 = ICONV_LETOHS (*cp);
|
|
else
|
|
w2 = ICONV_BETOHS (*cp);
|
|
|
|
if (w2 < 0xDC00 || w2 > 0xDFFF)
|
|
/* Broken surrogate character */
|
|
return (ucs4_t)ICONV_CES_INVALID_CHARACTER;
|
|
|
|
res = (ucs4_t)(w2 & 0x03FF) | ((ucs4_t)(w1 & 0x03FF) << 10);
|
|
res += 0x00010000;
|
|
}
|
|
|
|
*inbuf += bytes;
|
|
*inbytesleft -= bytes;
|
|
|
|
return res;
|
|
}
|
|
#endif /* ICONV_TO_UCS_CES_UTF_16 */
|
|
|
|
static int
|
|
_DEFUN(utf_16_get_mb_cur_max, (data),
|
|
_VOID_PTR data)
|
|
{
|
|
return 6;
|
|
}
|
|
|
|
#if defined (ICONV_TO_UCS_CES_UTF_16)
|
|
_CONST iconv_to_ucs_ces_handlers_t
|
|
_iconv_to_ucs_ces_handlers_utf_16 =
|
|
{
|
|
utf_16_init_to_ucs,
|
|
utf_16_close,
|
|
utf_16_get_mb_cur_max,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
utf_16_convert_to_ucs
|
|
};
|
|
#endif
|
|
|
|
#if defined (ICONV_FROM_UCS_CES_UTF_16)
|
|
_CONST iconv_from_ucs_ces_handlers_t
|
|
_iconv_from_ucs_ces_handlers_utf_16 =
|
|
{
|
|
utf_16_init_from_ucs,
|
|
utf_16_close,
|
|
utf_16_get_mb_cur_max,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
utf_16_convert_from_ucs
|
|
};
|
|
#endif
|
|
|
|
#endif /* ICONV_TO_UCS_CES_UTF_16 || ICONV_FROM_UCS_CES_UTF_16 */
|
|
|