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/*
* "streamable kanji code filter and converter"
* Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
*
* LICENSE NOTICES
*
* This file is part of "streamable kanji code filter and converter",
* which is distributed under the terms of GNU Lesser General Public
* License (version 2) as published by the Free Software Foundation.
*
* This software 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 "streamable kanji code filter and converter";
* if not, write to the Free Software Foundation, Inc., 59 Temple Place,
* Suite 330, Boston, MA 02111-1307 USA
*
* The author of this file:
*
*/
/*
* The source code included in this files was separated from mbfilter.c
* by Moriyoshi Koizumi <moriyoshi@php.net> on 4 Dec 2002. The file
* mbfilter.c is included in this package .
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mbfilter.h"
#include "mbfilter_byte4.h"
const mbfl_encoding mbfl_encoding_byte4be = {
mbfl_no_encoding_byte4be,
"byte4be",
NULL,
NULL,
NULL,
MBFL_ENCTYPE_SBCS
};
const mbfl_encoding mbfl_encoding_byte4le = {
mbfl_no_encoding_byte4le,
"byte4le",
NULL,
NULL,
NULL,
MBFL_ENCTYPE_SBCS
};
const struct mbfl_convert_vtbl vtbl_byte4be_wchar = {
mbfl_no_encoding_byte4be,
mbfl_no_encoding_wchar,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_byte4be_wchar,
mbfl_filt_conv_common_flush
};
const struct mbfl_convert_vtbl vtbl_wchar_byte4be = {
mbfl_no_encoding_wchar,
mbfl_no_encoding_byte4be,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_wchar_byte4be,
mbfl_filt_conv_common_flush };
const struct mbfl_convert_vtbl vtbl_byte4le_wchar = {
mbfl_no_encoding_byte4le,
mbfl_no_encoding_wchar,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_byte4le_wchar,
mbfl_filt_conv_common_flush
};
const struct mbfl_convert_vtbl vtbl_wchar_byte4le = {
mbfl_no_encoding_wchar,
mbfl_no_encoding_byte4le,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_wchar_byte4le,
mbfl_filt_conv_common_flush
};
#define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
int mbfl_filt_conv_byte4be_wchar(int c, mbfl_convert_filter *filter)
{
int n;
if (filter->status == 0) {
filter->status = 1;
n = (c & 0xff) << 24;
filter->cache = n;
} else if (filter->status == 1) {
filter->status = 2;
n = (c & 0xff) << 16;
filter->cache |= n;
} else if (filter->status == 2) {
filter->status = 3;
n = (c & 0xff) << 8;
filter->cache |= n;
} else {
filter->status = 0;
n = (c & 0xff) | filter->cache;
CK((*filter->output_function)(n, filter->data));
}
return c;
}
int mbfl_filt_conv_wchar_byte4be(int c, mbfl_convert_filter *filter)
{
CK((*filter->output_function)((c >> 24) & 0xff, filter->data));
CK((*filter->output_function)((c >> 16) & 0xff, filter->data));
CK((*filter->output_function)((c >> 8) & 0xff, filter->data));
CK((*filter->output_function)(c & 0xff, filter->data));
return c;
}
int mbfl_filt_conv_byte4le_wchar(int c, mbfl_convert_filter *filter)
{
int n;
if (filter->status == 0) {
filter->status = 1;
n = (c & 0xff);
filter->cache = n;
} else if (filter->status == 1) {
filter->status = 2;
n = (c & 0xff) << 8;
filter->cache |= n;
} else if (filter->status == 2) {
filter->status = 3;
n = (c & 0xff) << 16;
filter->cache |= n;
} else {
filter->status = 0;
n = ((c & 0xff) << 24) | filter->cache;
CK((*filter->output_function)(n, filter->data));
}
return c;
}
int mbfl_filt_conv_wchar_byte4le(int c, mbfl_convert_filter *filter)
{
CK((*filter->output_function)(c & 0xff, filter->data));
CK((*filter->output_function)((c >> 8) & 0xff, filter->data));
CK((*filter->output_function)((c >> 16) & 0xff, filter->data));
CK((*filter->output_function)((c >> 24) & 0xff, filter->data));
return c;
}
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