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523 lines
14 KiB
C
523 lines
14 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_ja.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_iso2022_jp_ms.h"
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#include "unicode_table_cp932_ext.h"
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#include "unicode_table_jis.h"
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#include "cp932_table.h"
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static int mbfl_filt_ident_2022jpms(int c, mbfl_identify_filter *filter);
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static const char *mbfl_encoding_2022jpms_aliases[] = {"ISO2022JPMS", NULL};
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const mbfl_encoding mbfl_encoding_2022jpms = {
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mbfl_no_encoding_2022jpms,
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"ISO-2022-JP-MS",
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"ISO-2022-JP",
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(const char *(*)[])&mbfl_encoding_2022jpms_aliases,
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NULL,
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MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_SHFTCODE
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};
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const struct mbfl_identify_vtbl vtbl_identify_2022jpms = {
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mbfl_no_encoding_2022jpms,
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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_2022jpms
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};
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const struct mbfl_convert_vtbl vtbl_2022jpms_wchar = {
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mbfl_no_encoding_2022jpms,
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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_2022jpms_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_2022jpms = {
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mbfl_no_encoding_wchar,
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mbfl_no_encoding_2022jpms,
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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_2022jpms,
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mbfl_filt_conv_any_2022jpms_flush
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};
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#define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
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#define sjistoidx(c1, c2) \
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(((c1) > 0x9f) \
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? (((c1) - 0xc1) * 188 + (c2) - (((c2) > 0x7e) ? 0x41 : 0x40)) \
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: (((c1) - 0x81) * 188 + (c2) - (((c2) > 0x7e) ? 0x41 : 0x40)))
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#define idxtojis1(c) (((c) / 94) + 0x21)
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#define idxtojis2(c) (((c) % 94) + 0x21)
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/*
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* ISO-2022-JP-MS => wchar
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*/
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int
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mbfl_filt_conv_2022jpms_wchar(int c, mbfl_convert_filter *filter)
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{
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int c1, s, w;
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retry:
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switch (filter->status & 0xf) {
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/* case 0x00: ASCII */
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/* case 0x10: X 0201 latin */
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/* case 0x20: X 0201 kana */
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/* case 0x80: X 0208 */
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/* case 0xa0: UDC */
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case 0:
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if (c == 0x1b) {
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filter->status += 2;
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} else if (filter->status == 0x20 && c > 0x20 && c < 0x60) { /* kana */
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CK((*filter->output_function)(0xff40 + c, filter->data));
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} else if ((filter->status == 0x80 || filter->status == 0xa0) && c > 0x20 && c < 0x80) { /* kanji first char */
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filter->cache = c;
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filter->status += 1;
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} else if (c >= 0 && c < 0x80) { /* latin, CTLs */
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CK((*filter->output_function)(c, filter->data));
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} else if (c > 0xa0 && c < 0xe0) { /* GR kana */
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CK((*filter->output_function)(0xfec0 + c, filter->data));
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} else {
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w = c & MBFL_WCSGROUP_MASK;
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w |= MBFL_WCSGROUP_THROUGH;
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CK((*filter->output_function)(w, filter->data));
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}
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break;
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/* case 0x81: X 0208 second char */
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/* case 0xa1: UDC second char */
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case 1:
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w = 0;
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filter->status &= ~0xf;
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c1 = filter->cache;
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if (c > 0x20 && c < 0x7f) {
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s = (c1 - 0x21)*94 + c - 0x21;
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if (filter->status == 0x80) {
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if (s <= 137) {
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if (s == 31) {
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w = 0xff3c; /* FULLWIDTH REVERSE SOLIDUS */
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} else if (s == 32) {
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w = 0xff5e; /* FULLWIDTH TILDE */
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} else if (s == 33) {
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w = 0x2225; /* PARALLEL TO */
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} else if (s == 60) {
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w = 0xff0d; /* FULLWIDTH HYPHEN-MINUS */
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} else if (s == 80) {
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w = 0xffe0; /* FULLWIDTH CENT SIGN */
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} else if (s == 81) {
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w = 0xffe1; /* FULLWIDTH POUND SIGN */
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} else if (s == 137) {
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w = 0xffe2; /* FULLWIDTH NOT SIGN */
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}
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}
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if (w == 0) {
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if (s >= cp932ext1_ucs_table_min && s < cp932ext1_ucs_table_max) { /* vendor ext1 (13ku) */
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w = cp932ext1_ucs_table[s - cp932ext1_ucs_table_min];
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} else if (s >= 0 && s < jisx0208_ucs_table_size) {
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w = jisx0208_ucs_table[s];
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} else if (s >= cp932ext2_ucs_table_min && s < cp932ext2_ucs_table_max) { /* vendor ext2 (89ku - 92ku) */
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w = cp932ext2_ucs_table[s - cp932ext2_ucs_table_min];
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} else {
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w = 0;
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}
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}
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if (w <= 0) {
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w = (c1 << 8) | c;
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w &= MBFL_WCSPLANE_MASK;
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w |= MBFL_WCSPLANE_JIS0208;
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}
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CK((*filter->output_function)(w, filter->data));
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} else {
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if (c1 > 0x20 && c1 < 0x35) {
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w = 0xe000 + (c1 - 0x21)*94 + c - 0x21;
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}
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if (w <= 0) {
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w = (((c1 - 0x21) + 0x7f) << 8) | c;
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w &= MBFL_WCSPLANE_MASK;
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w |= MBFL_WCSPLANE_JIS0208;
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}
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CK((*filter->output_function)(w, filter->data));
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}
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} else if (c == 0x1b) {
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filter->status += 2;
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} else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
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CK((*filter->output_function)(c, filter->data));
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} else {
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w = (c1 << 8) | c;
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w &= MBFL_WCSGROUP_MASK;
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w |= MBFL_WCSGROUP_THROUGH;
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CK((*filter->output_function)(w, filter->data));
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}
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break;
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/* ESC */
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/* case 0x02: */
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/* case 0x12: */
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/* case 0x22: */
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/* case 0x82: */
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/* case 0xa2: */
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case 2:
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if (c == 0x24) { /* '$' */
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filter->status++;
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} else if (c == 0x28) { /* '(' */
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filter->status += 3;
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} else {
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filter->status &= ~0xf;
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CK((*filter->output_function)(0x1b, filter->data));
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goto retry;
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}
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break;
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/* ESC $ */
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/* case 0x03: */
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/* case 0x13: */
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/* case 0x23: */
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/* case 0x83: */
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/* case 0xa3: */
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case 3:
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if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
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filter->status = 0x80;
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} else if (c == 0x28) { /* '(' */
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filter->status++;
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} else {
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filter->status &= ~0xf;
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CK((*filter->output_function)(0x1b, filter->data));
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CK((*filter->output_function)(0x24, filter->data));
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goto retry;
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}
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break;
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/* ESC $ ( */
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/* case 0x04: */
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/* case 0x14: */
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/* case 0x24: */
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/* case 0x84: */
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/* case 0xa4: */
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case 4:
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if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
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filter->status = 0x80;
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} else if (c == 0x3f) { /* '?' */
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filter->status = 0xa0;
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} else {
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filter->status &= ~0xf;
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CK((*filter->output_function)(0x1b, filter->data));
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CK((*filter->output_function)(0x24, filter->data));
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CK((*filter->output_function)(0x28, filter->data));
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goto retry;
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}
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break;
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/* ESC ( */
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/* case 0x05: */
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/* case 0x15: */
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/* case 0x25: */
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/* case 0x85: */
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/* case 0xa5: */
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case 5:
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if (c == 0x42) { /* 'B' */
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filter->status = 0;
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} else if (c == 0x4a) { /* 'J' */
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filter->status = 0;
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} else if (c == 0x49) { /* 'I' */
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filter->status = 0x20;
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} else {
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filter->status &= ~0xf;
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CK((*filter->output_function)(0x1b, filter->data));
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CK((*filter->output_function)(0x28, filter->data));
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goto retry;
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}
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break;
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default:
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filter->status = 0;
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break;
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}
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return c;
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}
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static int
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cp932ext3_cp932ext2_jis(int c)
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{
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int idx;
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idx = sjistoidx(0xfa, 0x40) + c;
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if (idx >= sjistoidx(0xfa, 0x5c))
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idx -= sjistoidx(0xfa, 0x5c) - sjistoidx(0xed, 0x40);
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else if (idx >= sjistoidx(0xfa, 0x55))
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idx -= sjistoidx(0xfa, 0x55) - sjistoidx(0xee, 0xfa);
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else if (idx >= sjistoidx(0xfa, 0x40))
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idx -= sjistoidx(0xfa, 0x40) - sjistoidx(0xee, 0xef);
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return idxtojis1(idx) << 8 | idxtojis2(idx);
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}
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/*
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* wchar => ISO-2022-JP-MS
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*/
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int
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mbfl_filt_conv_wchar_2022jpms(int c, mbfl_convert_filter *filter)
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{
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int c1, c2, s1, s2;
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s1 = 0;
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s2 = 0;
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if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
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s1 = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
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} else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
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s1 = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
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} else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
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s1 = ucs_i_jis_table[c - ucs_i_jis_table_min];
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} else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
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s1 = ucs_r_jis_table[c - ucs_r_jis_table_min];
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} else if (c >= 0xe000 && c < (0xe000 + 20*94)) { /* user (95ku - 114ku) */
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s1 = c - 0xe000;
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c1 = s1/94 + 0x7f;
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c2 = s1%94 + 0x21;
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s1 = (c1 << 8) | c2;
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}
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if (s1 <= 0) {
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c1 = c & ~MBFL_WCSPLANE_MASK;
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if (c1 == MBFL_WCSPLANE_WINCP932) {
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s1 = c & MBFL_WCSPLANE_MASK;
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s2 = 1;
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} else if (c1 == MBFL_WCSPLANE_JIS0208) {
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s1 = c & MBFL_WCSPLANE_MASK;
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} else if (c1 == MBFL_WCSPLANE_JIS0212) {
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s1 = c & MBFL_WCSPLANE_MASK;
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s1 |= 0x8080;
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} else if (c == 0xa5) { /* YEN SIGN */
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s1 = 0x216f; /* FULLWIDTH YEN SIGN */
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} else if (c == 0x203e) { /* OVER LINE */
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s1 = 0x2131; /* FULLWIDTH MACRON */
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} else if (c == 0xff3c) { /* FULLWIDTH REVERSE SOLIDUS */
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s1 = 0x2140;
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} else if (c == 0xff5e) { /* FULLWIDTH TILDE */
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s1 = 0x2141;
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} else if (c == 0x2225) { /* PARALLEL TO */
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s1 = 0x2142;
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} else if (c == 0xff0d) { /* FULLWIDTH HYPHEN-MINUS */
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s1 = 0x215d;
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} else if (c == 0xffe0) { /* FULLWIDTH CENT SIGN */
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s1 = 0x2171;
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} else if (c == 0xffe1) { /* FULLWIDTH POUND SIGN */
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s1 = 0x2172;
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} else if (c == 0xffe2) { /* FULLWIDTH NOT SIGN */
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s1 = 0x224c;
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}
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}
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if ((s1 <= 0) || (s1 >= 0xa1a1 && s2 == 0)) { /* not found or X 0212 */
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s1 = -1;
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c1 = 0;
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c2 = cp932ext1_ucs_table_max - cp932ext1_ucs_table_min;
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while (c1 < c2) { /* CP932 vendor ext1 (13ku) */
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if (c == cp932ext1_ucs_table[c1]) {
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s1 = ((c1/94 + 0x2d) << 8) + (c1%94 + 0x21);
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break;
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}
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c1++;
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}
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if (s1 <= 0) {
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c1 = 0;
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c2 = cp932ext3_ucs_table_max - cp932ext3_ucs_table_min;
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while (c1 < c2) { /* CP932 vendor ext3 (115ku - 119ku) */
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if (c == cp932ext3_ucs_table[c1]) {
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s1 = cp932ext3_cp932ext2_jis(c1);
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break;
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}
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c1++;
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}
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}
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if (c == 0) {
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s1 = 0;
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} else if (s1 <= 0) {
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s1 = -1;
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}
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}
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if (s1 >= 0) {
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if (s1 < 0x80) { /* latin */
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if ((filter->status & 0xff00) != 0) {
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CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
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CK((*filter->output_function)(0x28, filter->data)); /* '(' */
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CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
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}
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CK((*filter->output_function)(s1, filter->data));
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filter->status = 0;
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} else if (s1 > 0xa0 && s1 < 0xe0) { /* kana */
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if ((filter->status & 0xff00) != 0x100) {
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CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
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CK((*filter->output_function)(0x28, filter->data)); /* '(' */
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CK((*filter->output_function)(0x49, filter->data)); /* 'I' */
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}
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filter->status = 0x100;
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CK((*filter->output_function)(s1 & 0x7f, filter->data));
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} else if (s1 < 0x7e7f) { /* X 0208 */
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if ((filter->status & 0xff00) != 0x200) {
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CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
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CK((*filter->output_function)(0x24, filter->data)); /* '$' */
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CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
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}
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filter->status = 0x200;
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CK((*filter->output_function)((s1 >> 8) & 0xff, filter->data));
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CK((*filter->output_function)(s1 & 0x7f, filter->data));
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} else if (s1 < 0x927f) { /* UDC */
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if ((filter->status & 0xff00) != 0x800) {
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CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
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CK((*filter->output_function)(0x24, filter->data)); /* '$' */
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CK((*filter->output_function)(0x28, filter->data)); /* '(' */
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CK((*filter->output_function)(0x3f, filter->data)); /* '?' */
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}
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filter->status = 0x800;
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CK((*filter->output_function)(((s1 >> 8) - 0x5e) & 0x7f, filter->data));
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CK((*filter->output_function)(s1 & 0x7f, filter->data));
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}
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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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int
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mbfl_filt_conv_any_2022jpms_flush(mbfl_convert_filter *filter)
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{
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/* back to latin */
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if ((filter->status & 0xff00) != 0) {
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CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
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CK((*filter->output_function)(0x28, filter->data)); /* '(' */
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CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
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}
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filter->status &= 0xff;
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return 0;
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}
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static int mbfl_filt_ident_2022jpms(int c, mbfl_identify_filter *filter)
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{
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retry:
|
|
switch (filter->status & 0xf) {
|
|
/* case 0x00: ASCII */
|
|
/* case 0x10: X 0201 latin */
|
|
/* case 0x20: X 0201 kana */
|
|
/* case 0x80: X 0208 */
|
|
/* case 0xa0: X UDC */
|
|
case 0:
|
|
if (c == 0x1b) {
|
|
filter->status += 2;
|
|
} else if ((filter->status == 0x80 || filter->status == 0xa0) && c > 0x20 && c < 0x80) { /* kanji first char */
|
|
filter->status += 1;
|
|
} else if (c >= 0 && c < 0x80) { /* latin, CTLs */
|
|
;
|
|
} else {
|
|
filter->flag = 1; /* bad */
|
|
}
|
|
break;
|
|
|
|
/* case 0x81: X 0208 second char */
|
|
/* case 0xa1: UDC second char */
|
|
case 1:
|
|
filter->status &= ~0xf;
|
|
if (c == 0x1b) {
|
|
goto retry;
|
|
} else if (c < 0x21 || c > 0x7e) { /* bad */
|
|
filter->flag = 1;
|
|
}
|
|
break;
|
|
|
|
/* ESC */
|
|
case 2:
|
|
if (c == 0x24) { /* '$' */
|
|
filter->status++;
|
|
} else if (c == 0x28) { /* '(' */
|
|
filter->status += 3;
|
|
} else {
|
|
filter->flag = 1; /* bad */
|
|
filter->status &= ~0xf;
|
|
goto retry;
|
|
}
|
|
break;
|
|
|
|
/* ESC $ */
|
|
case 3:
|
|
if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
|
|
filter->status = 0x80;
|
|
} else if (c == 0x28) { /* '(' */
|
|
filter->status++;
|
|
} else {
|
|
filter->flag = 1; /* bad */
|
|
filter->status &= ~0xf;
|
|
goto retry;
|
|
}
|
|
break;
|
|
|
|
/* ESC $ ( */
|
|
case 4:
|
|
if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
|
|
filter->status = 0x80;
|
|
} else if (c == 0x3f) { /* '?' */
|
|
filter->status = 0xa0;
|
|
} else {
|
|
filter->flag = 1; /* bad */
|
|
filter->status &= ~0xf;
|
|
goto retry;
|
|
}
|
|
break;
|
|
|
|
/* ESC ( */
|
|
case 5:
|
|
if (c == 0x42) { /* 'B' */
|
|
filter->status = 0;
|
|
} else if (c == 0x4a) { /* 'J' */
|
|
filter->status = 0;
|
|
} else if (c == 0x49) { /* 'I' */
|
|
filter->status = 0x20;
|
|
} else {
|
|
filter->flag = 1; /* bad */
|
|
filter->status &= ~0xf;
|
|
goto retry;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
filter->status = 0;
|
|
break;
|
|
}
|
|
|
|
return c;
|
|
}
|