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148 lines
3.6 KiB
C
148 lines
3.6 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 part: Wez Furlong <wez@thebrainroom.com>
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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.
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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_cp1252.h"
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#include "unicode_table_cp1252.h"
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static int mbfl_filt_ident_cp1252(int c, mbfl_identify_filter *filter);
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static const char *mbfl_encoding_cp1252_aliases[] = {"cp1252", NULL};
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const mbfl_encoding mbfl_encoding_cp1252 = {
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mbfl_no_encoding_cp1252,
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"Windows-1252",
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"Windows-1252",
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(const char *(*)[])&mbfl_encoding_cp1252_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_cp1252 = {
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mbfl_no_encoding_cp1252,
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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_cp1252
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};
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const struct mbfl_convert_vtbl vtbl_cp1252_wchar = {
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mbfl_no_encoding_cp1252,
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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_cp1252_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_cp1252 = {
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mbfl_no_encoding_wchar,
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mbfl_no_encoding_cp1252,
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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_cp1252,
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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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* wchar => cp1252
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*/
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int mbfl_filt_conv_wchar_cp1252(int c, mbfl_convert_filter *filter)
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{
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int s=-1, n;
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if (c >= 0x100) {
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/* look it up from the cp1252 table */
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s = -1;
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n = 31;
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while (n >= 0) {
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if (c == cp1252_ucs_table[n] && c != 0xfffe) {
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s = 0x80 + 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_8859_1)
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{
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s = c & MBFL_WCSPLANE_MASK;
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}
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}
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else if (c >= 0 && c < 0x100) {
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s = c;
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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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/*
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* cp1252 => wchar
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*/
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int mbfl_filt_conv_cp1252_wchar(int c, mbfl_convert_filter *filter)
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{
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int s;
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if (c >= 0x80 && c < 0xa0) {
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s = cp1252_ucs_table[c - 0x80];
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} else {
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s = c;
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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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/* We only distinguish the MS extensions to ISO-8859-1.
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* Actually, this is pretty much a NO-OP, since the identification
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* system doesn't allow us to discriminate between a positive match,
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* a possible match and a definite non-match.
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* The problem here is that cp1252 looks like SJIS for certain chars.
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* */
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static int mbfl_filt_ident_cp1252(int c, mbfl_identify_filter *filter)
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{
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if (c >= 0x80 && c < 0xa0)
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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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