#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mbfilter.h"
#include "mbfilter_sjis.h"
#define UNICODE_TABLE_CP932_DEF
#define UNICODE_TABLE_JIS_DEF
#include "unicode_table_cp932_ext.h"
#include "unicode_table_jis.h"
int mbfl_filt_ident_sjis(int c, mbfl_identify_filter *filter);
const unsigned char mblen_table_sjis[] = {
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,
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, 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,
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
};
static const char *mbfl_encoding_sjis_aliases[] = {"x-sjis", "SHIFT-JIS", NULL};
const mbfl_encoding mbfl_encoding_sjis = {
mbfl_no_encoding_sjis,
"SJIS",
"Shift_JIS",
(const char *(*)[])&mbfl_encoding_sjis_aliases,
mblen_table_sjis,
MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_GL_UNSAFE
};
const struct mbfl_identify_vtbl vtbl_identify_sjis = {
mbfl_no_encoding_sjis,
mbfl_filt_ident_common_ctor,
mbfl_filt_ident_common_dtor,
mbfl_filt_ident_sjis
};
const struct mbfl_convert_vtbl vtbl_sjis_wchar = {
mbfl_no_encoding_sjis,
mbfl_no_encoding_wchar,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_sjis_wchar,
mbfl_filt_conv_common_flush
};
const struct mbfl_convert_vtbl vtbl_wchar_sjis = {
mbfl_no_encoding_wchar,
mbfl_no_encoding_sjis,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_wchar_sjis,
mbfl_filt_conv_common_flush
};
#define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
#define SJIS_ENCODE(c1,c2,s1,s2) \
do { \
s1 = c1; \
s1--; \
s1 >>= 1; \
if ((c1) < 0x5f) { \
s1 += 0x71; \
} else { \
s1 += 0xb1; \
} \
s2 = c2; \
if ((c1) & 1) { \
if ((c2) < 0x60) { \
s2--; \
} \
s2 += 0x20; \
} else { \
s2 += 0x7e; \
} \
} while (0)
#define SJIS_DECODE(c1,c2,s1,s2) \
do { \
s1 = c1; \
if (s1 < 0xa0) { \
s1 -= 0x81; \
} else { \
s1 -= 0xc1; \
} \
s1 <<= 1; \
s1 += 0x21; \
s2 = c2; \
if (s2 < 0x9f) { \
if (s2 < 0x7f) { \
s2++; \
} \
s2 -= 0x20; \
} else { \
s1++; \
s2 -= 0x7e; \
} \
} while (0)
int
mbfl_filt_conv_sjis_wchar(int c, mbfl_convert_filter *filter)
{
int c1, s1, s2, w;
switch (filter->status) {
case 0:
if (c >= 0 && c < 0x80) {
CK((*filter->output_function)(c, filter->data));
} else if (c > 0xa0 && c < 0xe0) {
CK((*filter->output_function)(0xfec0 + c, filter->data));
} else if (c > 0x80 && c < 0xfd && c != 0xa0) {
filter->status = 1;
filter->cache = c;
} else {
w = c & MBFL_WCSGROUP_MASK;
w |= MBFL_WCSGROUP_THROUGH;
CK((*filter->output_function)(w, filter->data));
}
break;
case 1:
filter->status = 0;
c1 = filter->cache;
if (c >= 0x40 && c <= 0xfc && c != 0x7f) {
SJIS_DECODE(c1, c, s1, s2);
w = (s1 - 0x21)*94 + s2 - 0x21;
if (w >= 0 && w < jisx0208_ucs_table_size) {
w = jisx0208_ucs_table[w];
} else {
w = 0;
}
if (w <= 0) {
if (s1 < 0x7f && s2 < 0x7f) {
w = (s1 << 8) | s2;
w &= MBFL_WCSPLANE_MASK;
w |= MBFL_WCSPLANE_JIS0208;
} else {
w = (c1 << 8) | c;
w &= MBFL_WCSGROUP_MASK;
w |= MBFL_WCSGROUP_THROUGH;
}
}
CK((*filter->output_function)(w, filter->data));
} else if ((c >= 0 && c < 0x21) || c == 0x7f) {
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;
default:
filter->status = 0;
break;
}
return c;
}
int
mbfl_filt_conv_wchar_sjis(int c, mbfl_convert_filter *filter)
{
int c1, c2, s1, s2;
s1 = 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];
}
if (s1 <= 0) {
c1 = c & ~MBFL_WCSPLANE_MASK;
if (c1 == MBFL_WCSPLANE_JIS0208) {
s1 = c & MBFL_WCSPLANE_MASK;
} else if (c == 0xa5) {
s1 = 0x216f;
} else if (c == 0x203e) {
s1 = 0x2131;
} else if (c == 0xff3c) {
s1 = 0x2140;
} else if (c == 0xff5e) {
s1 = 0x2141;
} else if (c == 0x2225) {
s1 = 0x2142;
} else if (c == 0xff0d) {
s1 = 0x215d;
} else if (c == 0xffe0) {
s1 = 0x2171;
} else if (c == 0xffe1) {
s1 = 0x2172;
} else if (c == 0xffe2) {
s1 = 0x224c;
}
if (c == 0) {
s1 = 0;
} else if (s1 <= 0) {
s1 = -1;
}
} else if (s1 >= 0x8080) {
s1 = -1;
}
if (s1 >= 0) {
if (s1 < 0x100) {
CK((*filter->output_function)(s1, filter->data));
} else {
c1 = (s1 >> 8) & 0xff;
c2 = s1 & 0xff;
SJIS_ENCODE(c1, c2, s1, s2);
CK((*filter->output_function)(s1, filter->data));
CK((*filter->output_function)(s2, 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_ident_sjis(int c, mbfl_identify_filter *filter)
{
if (filter->status) {
if (c < 0x40 || c > 0xfc || c == 0x7f) {
filter->flag = 1;
}
filter->status = 0;
} else if (c >= 0 && c < 0x80) {
;
} else if (c > 0xa0 && c < 0xe0) {
;
} else if (c > 0x80 && c < 0xf0 && c != 0xa0) {
filter->status = 1;
} else {
filter->flag = 1;
}
return c;
}