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152 lines
3.4 KiB
C
152 lines
3.4 KiB
C
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/*
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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 part: Den V. Tsopa <tdv@edisoft.ru>
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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_ru.c
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* by moriyoshi koizumi <moriyoshi@php.net> on 4 dec 2002.
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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_cp866.h"
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#include "unicode_table_cp866.h"
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static int mbfl_filt_ident_cp866(int c, mbfl_identify_filter *filter);
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static const char *mbfl_encoding_cp866_aliases[] = {"CP866", "CP-866", "IBM-866", NULL};
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const mbfl_encoding mbfl_encoding_cp866 = {
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mbfl_no_encoding_cp866,
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"CP866",
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"CP866",
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(const char *(*)[])&mbfl_encoding_cp866_aliases,
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NULL,
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MBFL_ENCTYPE_SBCS
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};
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const struct mbfl_identify_vtbl vtbl_identify_cp866 = {
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mbfl_no_encoding_cp866,
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mbfl_filt_ident_common_ctor,
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mbfl_filt_ident_common_dtor,
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mbfl_filt_ident_cp866
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};
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const struct mbfl_convert_vtbl vtbl_wchar_cp866 = {
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mbfl_no_encoding_wchar,
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mbfl_no_encoding_cp866,
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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_cp866,
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mbfl_filt_conv_common_flush
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};
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const struct mbfl_convert_vtbl vtbl_cp866_wchar = {
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mbfl_no_encoding_cp866,
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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_cp866_wchar,
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mbfl_filt_conv_common_flush
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};
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#define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
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/*
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* cp866 => wchar
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*/
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int
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mbfl_filt_conv_cp866_wchar(int c, mbfl_convert_filter *filter)
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{
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int s;
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if (c >= 0 && c < cp866_ucs_table_min) {
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s = c;
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} else if (c >= cp866_ucs_table_min && c < 0x100) {
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s = cp866_ucs_table[c - cp866_ucs_table_min];
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if (s <= 0) {
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s = c;
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s &= MBFL_WCSPLANE_MASK;
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s |= MBFL_WCSPLANE_CP866;
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}
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} else {
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s = c;
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s &= MBFL_WCSGROUP_MASK;
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s |= MBFL_WCSGROUP_THROUGH;
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}
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CK((*filter->output_function)(s, filter->data));
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return c;
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}
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/*
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* wchar => cp866
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*/
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int
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mbfl_filt_conv_wchar_cp866(int c, mbfl_convert_filter *filter)
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{
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int s, n;
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if (c < 0x80) {
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s = c;
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} else {
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s = -1;
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n = cp866_ucs_table_len-1;
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while (n >= 0) {
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if (c == cp866_ucs_table[n]) {
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s = cp866_ucs_table_min + n;
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break;
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}
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n--;
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}
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if (s <= 0 && (c & ~MBFL_WCSPLANE_MASK) == MBFL_WCSPLANE_CP866) {
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s = c & MBFL_WCSPLANE_MASK;
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}
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}
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if (s >= 0) {
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CK((*filter->output_function)(s, filter->data));
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} else {
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if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
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CK(mbfl_filt_conv_illegal_output(c, filter));
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}
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}
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return c;
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}
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static int mbfl_filt_ident_cp866(int c, mbfl_identify_filter *filter)
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{
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if (c >= 0x80 && c < 0xff)
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filter->flag = 0;
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else
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filter->flag = 1; /* not it */
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return c;
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}
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