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php-src/ext/mbstring/libmbfl/filters/mbfilter_iso2022_jp_ms.c

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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_ja.c
* by moriyoshi koizumi <moriyoshi@php.net> on 4 dec 2002.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mbfilter.h"
#include "mbfilter_iso2022_jp_ms.h"
#include "unicode_table_cp932_ext.h"
#include "unicode_table_jis.h"
#include "cp932_table.h"
static int mbfl_filt_ident_2022jpms(int c, mbfl_identify_filter *filter);
static const char *mbfl_encoding_2022jpms_aliases[] = {"ISO2022JPMS", NULL};
const mbfl_encoding mbfl_encoding_2022jpms = {
mbfl_no_encoding_2022jpms,
"ISO-2022-JP-MS",
"ISO-2022-JP",
(const char *(*)[])&mbfl_encoding_2022jpms_aliases,
NULL,
MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_SHFTCODE
};
const struct mbfl_identify_vtbl vtbl_identify_2022jpms = {
mbfl_no_encoding_2022jpms,
mbfl_filt_ident_common_ctor,
mbfl_filt_ident_common_dtor,
mbfl_filt_ident_2022jpms
};
const struct mbfl_convert_vtbl vtbl_2022jpms_wchar = {
mbfl_no_encoding_2022jpms,
mbfl_no_encoding_wchar,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_2022jpms_wchar,
mbfl_filt_conv_common_flush
};
const struct mbfl_convert_vtbl vtbl_wchar_2022jpms = {
mbfl_no_encoding_wchar,
mbfl_no_encoding_2022jpms,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_wchar_2022jpms,
mbfl_filt_conv_any_2022jpms_flush
};
#define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
#define sjistoidx(c1, c2) \
(((c1) > 0x9f) \
? (((c1) - 0xc1) * 188 + (c2) - (((c2) > 0x7e) ? 0x41 : 0x40)) \
: (((c1) - 0x81) * 188 + (c2) - (((c2) > 0x7e) ? 0x41 : 0x40)))
#define idxtojis1(c) (((c) / 94) + 0x21)
#define idxtojis2(c) (((c) % 94) + 0x21)
/*
* ISO-2022-JP-MS => wchar
*/
int
mbfl_filt_conv_2022jpms_wchar(int c, mbfl_convert_filter *filter)
{
int c1, s, w;
retry:
switch (filter->status & 0xf) {
/* case 0x00: ASCII */
/* case 0x10: X 0201 latin */
/* case 0x20: X 0201 kana */
/* case 0x80: X 0208 */
/* case 0xa0: UDC */
case 0:
if (c == 0x1b) {
filter->status += 2;
} else if (filter->status == 0x20 && c > 0x20 && c < 0x60) { /* kana */
CK((*filter->output_function)(0xff40 + c, filter->data));
} else if ((filter->status == 0x80 || filter->status == 0xa0) && c > 0x20 && c < 0x80) { /* kanji first char */
filter->cache = c;
filter->status += 1;
} else if (c >= 0 && c < 0x80) { /* latin, CTLs */
CK((*filter->output_function)(c, filter->data));
} else if (c > 0xa0 && c < 0xe0) { /* GR kana */
CK((*filter->output_function)(0xfec0 + c, filter->data));
} else {
w = c & MBFL_WCSGROUP_MASK;
w |= MBFL_WCSGROUP_THROUGH;
CK((*filter->output_function)(w, filter->data));
}
break;
/* case 0x81: X 0208 second char */
/* case 0xa1: UDC second char */
case 1:
w = 0;
filter->status &= ~0xf;
c1 = filter->cache;
if (c > 0x20 && c < 0x7f) {
s = (c1 - 0x21)*94 + c - 0x21;
if (filter->status == 0x80) {
if (s <= 137) {
if (s == 31) {
w = 0xff3c; /* FULLWIDTH REVERSE SOLIDUS */
} else if (s == 32) {
w = 0xff5e; /* FULLWIDTH TILDE */
} else if (s == 33) {
w = 0x2225; /* PARALLEL TO */
} else if (s == 60) {
w = 0xff0d; /* FULLWIDTH HYPHEN-MINUS */
} else if (s == 80) {
w = 0xffe0; /* FULLWIDTH CENT SIGN */
} else if (s == 81) {
w = 0xffe1; /* FULLWIDTH POUND SIGN */
} else if (s == 137) {
w = 0xffe2; /* FULLWIDTH NOT SIGN */
}
}
if (w == 0) {
if (s >= cp932ext1_ucs_table_min && s < cp932ext1_ucs_table_max) { /* vendor ext1 (13ku) */
w = cp932ext1_ucs_table[s - cp932ext1_ucs_table_min];
} else if (s >= 0 && s < jisx0208_ucs_table_size) {
w = jisx0208_ucs_table[s];
} else if (s >= cp932ext2_ucs_table_min && s < cp932ext2_ucs_table_max) { /* vendor ext2 (89ku - 92ku) */
w = cp932ext2_ucs_table[s - cp932ext2_ucs_table_min];
} else {
w = 0;
}
}
if (w <= 0) {
w = (c1 << 8) | c;
w &= MBFL_WCSPLANE_MASK;
w |= MBFL_WCSPLANE_JIS0208;
}
CK((*filter->output_function)(w, filter->data));
} else {
if (c1 > 0x20 && c1 < 0x35) {
w = 0xe000 + (c1 - 0x21)*94 + c - 0x21;
}
if (w <= 0) {
w = (((c1 - 0x21) + 0x7f) << 8) | c;
w &= MBFL_WCSPLANE_MASK;
w |= MBFL_WCSPLANE_JIS0208;
}
CK((*filter->output_function)(w, filter->data));
}
} else if (c == 0x1b) {
filter->status += 2;
} else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
CK((*filter->output_function)(c, filter->data));
} else {
w = (c1 << 8) | c;
w &= MBFL_WCSGROUP_MASK;
w |= MBFL_WCSGROUP_THROUGH;
CK((*filter->output_function)(w, filter->data));
}
break;
/* ESC */
/* case 0x02: */
/* case 0x12: */
/* case 0x22: */
/* case 0x82: */
/* case 0xa2: */
case 2:
if (c == 0x24) { /* '$' */
filter->status++;
} else if (c == 0x28) { /* '(' */
filter->status += 3;
} else {
filter->status &= ~0xf;
CK((*filter->output_function)(0x1b, filter->data));
goto retry;
}
break;
/* ESC $ */
/* case 0x03: */
/* case 0x13: */
/* case 0x23: */
/* case 0x83: */
/* case 0xa3: */
case 3:
if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
filter->status = 0x80;
} else if (c == 0x28) { /* '(' */
filter->status++;
} else {
filter->status &= ~0xf;
CK((*filter->output_function)(0x1b, filter->data));
CK((*filter->output_function)(0x24, filter->data));
goto retry;
}
break;
/* ESC $ ( */
/* case 0x04: */
/* case 0x14: */
/* case 0x24: */
/* case 0x84: */
/* case 0xa4: */
case 4:
if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
filter->status = 0x80;
} else if (c == 0x3f) { /* '?' */
filter->status = 0xa0;
} else {
filter->status &= ~0xf;
CK((*filter->output_function)(0x1b, filter->data));
CK((*filter->output_function)(0x24, filter->data));
CK((*filter->output_function)(0x28, filter->data));
goto retry;
}
break;
/* ESC ( */
/* case 0x05: */
/* case 0x15: */
/* case 0x25: */
/* case 0x85: */
/* case 0xa5: */
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->status &= ~0xf;
CK((*filter->output_function)(0x1b, filter->data));
CK((*filter->output_function)(0x28, filter->data));
goto retry;
}
break;
default:
filter->status = 0;
break;
}
return c;
}
static int
cp932ext3_cp932ext2_jis(int c)
{
int idx;
idx = sjistoidx(0xfa, 0x40) + c;
if (idx >= sjistoidx(0xfa, 0x5c))
idx -= sjistoidx(0xfa, 0x5c) - sjistoidx(0xed, 0x40);
else if (idx >= sjistoidx(0xfa, 0x55))
idx -= sjistoidx(0xfa, 0x55) - sjistoidx(0xee, 0xfa);
else if (idx >= sjistoidx(0xfa, 0x40))
idx -= sjistoidx(0xfa, 0x40) - sjistoidx(0xee, 0xef);
return idxtojis1(idx) << 8 | idxtojis2(idx);
}
/*
* wchar => ISO-2022-JP-MS
*/
int
mbfl_filt_conv_wchar_2022jpms(int c, mbfl_convert_filter *filter)
{
int c1, c2, s1, s2;
s1 = 0;
s2 = 0;
if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
s1 = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
} else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
s1 = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
} else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
s1 = ucs_i_jis_table[c - ucs_i_jis_table_min];
} else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
s1 = ucs_r_jis_table[c - ucs_r_jis_table_min];
} else if (c >= 0xe000 && c < (0xe000 + 20*94)) { /* user (95ku - 114ku) */
s1 = c - 0xe000;
c1 = s1/94 + 0x7f;
c2 = s1%94 + 0x21;
s1 = (c1 << 8) | c2;
}
if (s1 <= 0) {
c1 = c & ~MBFL_WCSPLANE_MASK;
if (c1 == MBFL_WCSPLANE_WINCP932) {
s1 = c & MBFL_WCSPLANE_MASK;
s2 = 1;
} else if (c1 == MBFL_WCSPLANE_JIS0208) {
s1 = c & MBFL_WCSPLANE_MASK;
} else if (c1 == MBFL_WCSPLANE_JIS0212) {
s1 = c & MBFL_WCSPLANE_MASK;
s1 |= 0x8080;
} else if (c == 0xa5) { /* YEN SIGN */
s1 = 0x216f; /* FULLWIDTH YEN SIGN */
} else if (c == 0x203e) { /* OVER LINE */
s1 = 0x2131; /* FULLWIDTH MACRON */
} else if (c == 0xff3c) { /* FULLWIDTH REVERSE SOLIDUS */
s1 = 0x2140;
} else if (c == 0xff5e) { /* FULLWIDTH TILDE */
s1 = 0x2141;
} else if (c == 0x2225) { /* PARALLEL TO */
s1 = 0x2142;
} else if (c == 0xff0d) { /* FULLWIDTH HYPHEN-MINUS */
s1 = 0x215d;
} else if (c == 0xffe0) { /* FULLWIDTH CENT SIGN */
s1 = 0x2171;
} else if (c == 0xffe1) { /* FULLWIDTH POUND SIGN */
s1 = 0x2172;
} else if (c == 0xffe2) { /* FULLWIDTH NOT SIGN */
s1 = 0x224c;
}
}
if ((s1 <= 0) || (s1 >= 0xa1a1 && s2 == 0)) { /* not found or X 0212 */
s1 = -1;
c1 = 0;
c2 = cp932ext1_ucs_table_max - cp932ext1_ucs_table_min;
while (c1 < c2) { /* CP932 vendor ext1 (13ku) */
if (c == cp932ext1_ucs_table[c1]) {
s1 = ((c1/94 + 0x2d) << 8) + (c1%94 + 0x21);
break;
}
c1++;
}
if (s1 <= 0) {
c1 = 0;
c2 = cp932ext3_ucs_table_max - cp932ext3_ucs_table_min;
while (c1 < c2) { /* CP932 vendor ext3 (115ku - 119ku) */
if (c == cp932ext3_ucs_table[c1]) {
s1 = cp932ext3_cp932ext2_jis(c1);
break;
}
c1++;
}
}
if (c == 0) {
s1 = 0;
} else if (s1 <= 0) {
s1 = -1;
}
}
if (s1 >= 0) {
if (s1 < 0x80) { /* latin */
if ((filter->status & 0xff00) != 0) {
CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
CK((*filter->output_function)(0x28, filter->data)); /* '(' */
CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
}
CK((*filter->output_function)(s1, filter->data));
filter->status = 0;
} else if (s1 > 0xa0 && s1 < 0xe0) { /* kana */
if ((filter->status & 0xff00) != 0x100) {
CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
CK((*filter->output_function)(0x28, filter->data)); /* '(' */
CK((*filter->output_function)(0x49, filter->data)); /* 'I' */
}
filter->status = 0x100;
CK((*filter->output_function)(s1 & 0x7f, filter->data));
} else if (s1 < 0x7e7f) { /* X 0208 */
if ((filter->status & 0xff00) != 0x200) {
CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
CK((*filter->output_function)(0x24, filter->data)); /* '$' */
CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
}
filter->status = 0x200;
CK((*filter->output_function)((s1 >> 8) & 0xff, filter->data));
CK((*filter->output_function)(s1 & 0x7f, filter->data));
} else if (s1 < 0x927f) { /* UDC */
if ((filter->status & 0xff00) != 0x800) {
CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
CK((*filter->output_function)(0x24, filter->data)); /* '$' */
CK((*filter->output_function)(0x28, filter->data)); /* '(' */
CK((*filter->output_function)(0x3f, filter->data)); /* '?' */
}
filter->status = 0x800;
CK((*filter->output_function)(((s1 >> 8) - 0x5e) & 0x7f, filter->data));
CK((*filter->output_function)(s1 & 0x7f, filter->data));
}
} else {
if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
CK(mbfl_filt_conv_illegal_output(c, filter));
}
}
return c;
}
int
mbfl_filt_conv_any_2022jpms_flush(mbfl_convert_filter *filter)
{
/* back to latin */
if ((filter->status & 0xff00) != 0) {
CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
CK((*filter->output_function)(0x28, filter->data)); /* '(' */
CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
}
filter->status &= 0xff;
return 0;
}
static int mbfl_filt_ident_2022jpms(int c, mbfl_identify_filter *filter)
{
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;
}
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