mirror of
https://github.com/php/php-src.git
synced 2024-10-20 16:02:44 +00:00
330 lines
8.8 KiB
C
330 lines
8.8 KiB
C
|
/*
|
||
|
* "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: Rui Hirokawa <hirokawa@php.net>
|
||
|
*
|
||
|
*/
|
||
|
/*
|
||
|
* The source code included in this files was separated from mbfilter_tw.c
|
||
|
* by moriyoshi koizumi <moriyoshi@php.net> on 4 dec 2002.
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
#ifdef HAVE_CONFIG_H
|
||
|
#include "config.h"
|
||
|
#endif
|
||
|
|
||
|
#include "mbfilter.h"
|
||
|
#include "mbfilter_euc_tw.h"
|
||
|
|
||
|
#include "unicode_table_cns11643.h"
|
||
|
|
||
|
static int mbfl_filt_ident_euctw(int c, mbfl_identify_filter *filter);
|
||
|
|
||
|
static const unsigned char mblen_table_euctw[] = { /* 0xA1-0xFE */
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 1,
|
||
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||
|
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||
|
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1
|
||
|
};
|
||
|
|
||
|
|
||
|
static const char *mbfl_encoding_euc_tw_aliases[] = {"EUC_TW", "eucTW", "x-euc-tw", NULL};
|
||
|
|
||
|
const mbfl_encoding mbfl_encoding_euc_tw = {
|
||
|
mbfl_no_encoding_euc_tw,
|
||
|
"EUC-TW",
|
||
|
"EUC-TW",
|
||
|
(const char *(*)[])&mbfl_encoding_euc_tw_aliases,
|
||
|
mblen_table_euctw,
|
||
|
MBFL_ENCTYPE_MBCS
|
||
|
};
|
||
|
|
||
|
const struct mbfl_identify_vtbl vtbl_identify_euctw = {
|
||
|
mbfl_no_encoding_euc_tw,
|
||
|
mbfl_filt_ident_common_ctor,
|
||
|
mbfl_filt_ident_common_dtor,
|
||
|
mbfl_filt_ident_euctw
|
||
|
};
|
||
|
|
||
|
const struct mbfl_convert_vtbl vtbl_euctw_wchar = {
|
||
|
mbfl_no_encoding_euc_tw,
|
||
|
mbfl_no_encoding_wchar,
|
||
|
mbfl_filt_conv_common_ctor,
|
||
|
mbfl_filt_conv_common_dtor,
|
||
|
mbfl_filt_conv_euctw_wchar,
|
||
|
mbfl_filt_conv_common_flush
|
||
|
};
|
||
|
|
||
|
const struct mbfl_convert_vtbl vtbl_wchar_euctw = {
|
||
|
mbfl_no_encoding_wchar,
|
||
|
mbfl_no_encoding_euc_tw,
|
||
|
mbfl_filt_conv_common_ctor,
|
||
|
mbfl_filt_conv_common_dtor,
|
||
|
mbfl_filt_conv_wchar_euctw,
|
||
|
mbfl_filt_conv_common_flush
|
||
|
};
|
||
|
|
||
|
#define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
|
||
|
|
||
|
/*
|
||
|
* EUC-TW => wchar
|
||
|
*/
|
||
|
int
|
||
|
mbfl_filt_conv_euctw_wchar(int c, mbfl_convert_filter *filter)
|
||
|
{
|
||
|
int c1, s, w, plane;
|
||
|
|
||
|
switch (filter->status) {
|
||
|
case 0:
|
||
|
if (c >= 0 && c < 0x80) { /* latin */
|
||
|
CK((*filter->output_function)(c, filter->data));
|
||
|
} else if (c > 0xa0 && c < 0xff) { /* dbcs first byte */
|
||
|
filter->status = 1;
|
||
|
filter->cache = c;
|
||
|
} else if (c == 0x8e) { /* mbcs first byte */
|
||
|
filter->status = 2;
|
||
|
filter->cache = c;
|
||
|
} else {
|
||
|
w = c & MBFL_WCSGROUP_MASK;
|
||
|
w |= MBFL_WCSGROUP_THROUGH;
|
||
|
CK((*filter->output_function)(w, filter->data));
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case 1: /* mbcs second byte */
|
||
|
filter->status = 0;
|
||
|
c1 = filter->cache;
|
||
|
if (c > 0xa0 && c < 0xff) {
|
||
|
w = (c1 - 0xa1)*94 + (c - 0xa1);
|
||
|
if (w >= 0 && w < cns11643_1_ucs_table_size) {
|
||
|
w = cns11643_1_ucs_table[w];
|
||
|
} else {
|
||
|
w = 0;
|
||
|
}
|
||
|
if (w <= 0) {
|
||
|
w = (c1 << 8) | c;
|
||
|
w &= MBFL_WCSPLANE_MASK;
|
||
|
w |= MBFL_WCSPLANE_CNS11643;
|
||
|
}
|
||
|
CK((*filter->output_function)(w, filter->data));
|
||
|
} 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;
|
||
|
|
||
|
case 2: /* got 0x8e, first char */
|
||
|
c1 = filter->cache;
|
||
|
if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
|
||
|
CK((*filter->output_function)(c, filter->data));
|
||
|
filter->status = 0;
|
||
|
} else if (c > 0xa0 && c < 0xaf) {
|
||
|
filter->status = 3;
|
||
|
filter->cache = c - 0xa1;
|
||
|
} else {
|
||
|
w = (c1 << 8) | c;
|
||
|
w &= MBFL_WCSGROUP_MASK;
|
||
|
w |= MBFL_WCSGROUP_THROUGH;
|
||
|
CK((*filter->output_function)(w, filter->data));
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case 3: /* got 0x8e, third char */
|
||
|
filter->status = 0;
|
||
|
c1 = filter->cache;
|
||
|
if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
|
||
|
CK((*filter->output_function)(c, filter->data));
|
||
|
filter->status = 0;
|
||
|
} else if (c > 0xa0 && c < 0xff) {
|
||
|
filter->status = 4;
|
||
|
filter->cache = (c1 << 8) + c - 0xa1;
|
||
|
} else {
|
||
|
w = (c1 << 8) | c;
|
||
|
w &= MBFL_WCSGROUP_MASK;
|
||
|
w |= MBFL_WCSGROUP_THROUGH;
|
||
|
CK((*filter->output_function)(w, filter->data));
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case 4: /* mbcs fourth char */
|
||
|
filter->status = 0;
|
||
|
c1 = filter->cache;
|
||
|
if (c1 >= 0x100 && c1 <= 0xdff && c > 0xa0 && c < 0xff) {
|
||
|
plane = (c1 & 0xf00) >> 8;
|
||
|
s = (c1 & 0xff)*94 + c - 0xa1;
|
||
|
w = 0;
|
||
|
if (s >= 0) {
|
||
|
if (plane == 1 && s < cns11643_2_ucs_table_size) {
|
||
|
w = cns11643_2_ucs_table[s];
|
||
|
}
|
||
|
if (plane == 13 && s < cns11643_14_ucs_table_size) {
|
||
|
w = cns11643_14_ucs_table[s];
|
||
|
}
|
||
|
}
|
||
|
if (w <= 0) {
|
||
|
w = ((c1 & 0x7f) << 8) | (c & 0x7f);
|
||
|
w &= MBFL_WCSPLANE_MASK;
|
||
|
w |= MBFL_WCSPLANE_CNS11643;
|
||
|
}
|
||
|
CK((*filter->output_function)(w, filter->data));
|
||
|
} else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
|
||
|
CK((*filter->output_function)(c, filter->data));
|
||
|
} else {
|
||
|
w = (c1 << 8) | c | 0x8e0000;
|
||
|
w &= MBFL_WCSGROUP_MASK;
|
||
|
w |= MBFL_WCSGROUP_THROUGH;
|
||
|
CK((*filter->output_function)(w, filter->data));
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
filter->status = 0;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return c;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* wchar => EUC-TW
|
||
|
*/
|
||
|
int
|
||
|
mbfl_filt_conv_wchar_euctw(int c, mbfl_convert_filter *filter)
|
||
|
{
|
||
|
int c1, s, plane;
|
||
|
|
||
|
s = 0;
|
||
|
if (c >= ucs_a1_cns11643_table_min && c < ucs_a1_cns11643_table_max) {
|
||
|
s = ucs_a1_cns11643_table[c - ucs_a1_cns11643_table_min];
|
||
|
} else if (c >= ucs_a2_cns11643_table_min && c < ucs_a2_cns11643_table_max) {
|
||
|
s = ucs_a2_cns11643_table[c - ucs_a2_cns11643_table_min];
|
||
|
} else if (c >= ucs_a3_cns11643_table_min && c < ucs_a3_cns11643_table_max) {
|
||
|
s = ucs_a3_cns11643_table[c - ucs_a3_cns11643_table_min];
|
||
|
} else if (c >= ucs_i_cns11643_table_min && c < ucs_i_cns11643_table_max) {
|
||
|
s = ucs_i_cns11643_table[c - ucs_i_cns11643_table_min];
|
||
|
} else if (c >= ucs_r_cns11643_table_min && c < ucs_r_cns11643_table_max) {
|
||
|
s = ucs_r_cns11643_table[c - ucs_r_cns11643_table_min];
|
||
|
}
|
||
|
if (s <= 0) {
|
||
|
c1 = c & ~MBFL_WCSPLANE_MASK;
|
||
|
if (c1 == MBFL_WCSPLANE_CNS11643) {
|
||
|
s = c & MBFL_WCSPLANE_MASK;
|
||
|
}
|
||
|
if (c == 0) {
|
||
|
s = 0;
|
||
|
} else if (s <= 0) {
|
||
|
s = -1;
|
||
|
}
|
||
|
}
|
||
|
if (s >= 0) {
|
||
|
plane = (s & 0x1f0000) >> 16;
|
||
|
if (plane <= 1){
|
||
|
if (s < 0x80) { /* latin */
|
||
|
CK((*filter->output_function)(s, filter->data));
|
||
|
} else {
|
||
|
s = (s & 0xffff) | 0x8080;
|
||
|
CK((*filter->output_function)((s >> 8) & 0xff, filter->data));
|
||
|
CK((*filter->output_function)(s & 0xff, filter->data));
|
||
|
}
|
||
|
} else {
|
||
|
s = (0x8ea00000 + (plane << 16)) | ((s & 0xffff) | 0x8080);
|
||
|
CK((*filter->output_function)(0x8e , filter->data));
|
||
|
CK((*filter->output_function)((s >> 16) & 0xff, filter->data));
|
||
|
CK((*filter->output_function)((s >> 8) & 0xff, filter->data));
|
||
|
CK((*filter->output_function)(s & 0xff, filter->data));
|
||
|
}
|
||
|
} else {
|
||
|
if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
|
||
|
CK(mbfl_filt_conv_illegal_output(c, filter));
|
||
|
}
|
||
|
}
|
||
|
return c;
|
||
|
}
|
||
|
|
||
|
static int mbfl_filt_ident_euctw(int c, mbfl_identify_filter *filter)
|
||
|
{
|
||
|
switch (filter->status) {
|
||
|
case 0: /* latin */
|
||
|
if (c >= 0 && c < 0x80) { /* ok */
|
||
|
;
|
||
|
} else if (c > 0xa0 && c < 0xff) { /* DBCS lead byte */
|
||
|
filter->status = 1;
|
||
|
} else if (c == 0x8e) { /* DBCS lead byte */
|
||
|
filter->status = 2;
|
||
|
} else { /* bad */
|
||
|
filter->flag = 1;
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case 1: /* got lead byte */
|
||
|
if (c < 0xa1 || c > 0xfe) { /* bad */
|
||
|
filter->flag = 1;
|
||
|
}
|
||
|
filter->status = 0;
|
||
|
break;
|
||
|
|
||
|
case 2: /* got lead byte */
|
||
|
if (c >= 0xa1 && c < 0xaf) { /* ok */
|
||
|
filter->status = 3;
|
||
|
} else {
|
||
|
filter->flag = 1; /* bad */
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case 3: /* got lead byte */
|
||
|
if (c < 0xa1 || c > 0xfe) { /* bad */
|
||
|
filter->flag = 1;
|
||
|
}
|
||
|
filter->status = 4;
|
||
|
break;
|
||
|
|
||
|
case 4: /* got lead byte */
|
||
|
if (c < 0xa1 || c > 0xfe) { /* bad */
|
||
|
filter->flag = 1;
|
||
|
}
|
||
|
filter->status = 0;
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
filter->status = 0;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return c;
|
||
|
}
|
||
|
|