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138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/*
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* "streamable kanji code filter and converter"
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* Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
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*
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* LICENSE NOTICES
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*
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* This file is part of "streamable kanji code filter and converter",
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* which is distributed under the terms of GNU Lesser General Public
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* License (version 2) as published by the Free Software Foundation.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with "streamable kanji code filter and converter";
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* if not, write to the Free Software Foundation, Inc., 59 Temple Place,
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* Suite 330, Boston, MA 02111-1307 USA
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*
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* The author of this file:
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*
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*/
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/*
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* The source code included in this files was separated from mbfilter.c
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* by Moriyoshi Koizumi <moriyoshi@php.net> on 4 Dec 2002. The file
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* mbfilter.c is included in this package .
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "mbfilter.h"
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#include "mbfilter_byte2.h"
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const mbfl_encoding mbfl_encoding_byte2be = {
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mbfl_no_encoding_byte2be,
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"byte2be",
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NULL,
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NULL,
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NULL,
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MBFL_ENCTYPE_SBCS
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};
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const mbfl_encoding mbfl_encoding_byte2le = {
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mbfl_no_encoding_byte2le,
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"byte2le",
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NULL,
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NULL,
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NULL,
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MBFL_ENCTYPE_SBCS
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};
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const struct mbfl_convert_vtbl vtbl_byte2be_wchar = {
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mbfl_no_encoding_byte2be,
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mbfl_no_encoding_wchar,
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mbfl_filt_conv_common_ctor,
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mbfl_filt_conv_common_dtor,
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mbfl_filt_conv_byte2be_wchar,
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mbfl_filt_conv_common_flush
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};
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const struct mbfl_convert_vtbl vtbl_wchar_byte2be = {
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mbfl_no_encoding_wchar,
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mbfl_no_encoding_byte2be,
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mbfl_filt_conv_common_ctor,
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mbfl_filt_conv_common_dtor,
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mbfl_filt_conv_wchar_byte2be,
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mbfl_filt_conv_common_flush };
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const struct mbfl_convert_vtbl vtbl_byte2le_wchar = {
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mbfl_no_encoding_byte2le,
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mbfl_no_encoding_wchar,
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mbfl_filt_conv_common_ctor,
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mbfl_filt_conv_common_dtor,
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mbfl_filt_conv_byte2le_wchar,
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mbfl_filt_conv_common_flush };
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const struct mbfl_convert_vtbl vtbl_wchar_byte2le = {
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mbfl_no_encoding_wchar,
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mbfl_no_encoding_byte2le,
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mbfl_filt_conv_common_ctor,
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mbfl_filt_conv_common_dtor,
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mbfl_filt_conv_wchar_byte2le,
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mbfl_filt_conv_common_flush };
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#define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
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int mbfl_filt_conv_byte2be_wchar(int c, mbfl_convert_filter *filter)
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{
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int n;
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if (filter->status == 0) {
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filter->status = 1;
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n = (c & 0xff) << 8;
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filter->cache = n;
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} else {
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filter->status = 0;
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n = (c & 0xff) | filter->cache;
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CK((*filter->output_function)(n, filter->data));
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}
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return c;
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}
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int mbfl_filt_conv_wchar_byte2be(int c, mbfl_convert_filter *filter)
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{
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CK((*filter->output_function)((c >> 8) & 0xff, filter->data));
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CK((*filter->output_function)(c & 0xff, filter->data));
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return c;
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}
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int mbfl_filt_conv_byte2le_wchar(int c, mbfl_convert_filter *filter)
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{
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int n;
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if (filter->status == 0) {
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filter->status = 1;
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n = c & 0xff;
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filter->cache = n;
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} else {
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filter->status = 0;
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n = ((c & 0xff) << 8) | filter->cache;
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CK((*filter->output_function)(n, filter->data));
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}
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return c;
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}
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int mbfl_filt_conv_wchar_byte2le(int c, mbfl_convert_filter *filter)
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{
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CK((*filter->output_function)(c & 0xff, filter->data));
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CK((*filter->output_function)((c >> 8) & 0xff, filter->data));
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return c;
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}
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