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#include "transcode_data.h"
<%
require 'sjis-tbl'
require 'eucjp-tbl'
%>
<%= transcode_tblgen "Shift_JIS", "UTF-8", [["{00-7f}", :nomap], *SJIS_TO_UCS_TBL] %>
<%= transcode_tblgen "Windows-31J", "UTF-8", [["{00-7f}", :nomap], *SJIS_TO_UCS_TBL] %>
<%= transcode_tblgen "UTF-8", "Shift_JIS", [["{00-7f}", :nomap], *UCS_TO_SJIS_TBL] %>
<%= transcode_tblgen "UTF-8", "Windows-31J", [["{00-7f}", :nomap], *UCS_TO_SJIS_TBL] %>
<%= transcode_tblgen "EUC-JP", "UTF-8", [["{00-7f}", :nomap], *EUCJP_TO_UCS_TBL] %>
<%= transcode_tblgen "CP51932", "UTF-8", [["{00-7f}", :nomap], *EUCJP_TO_UCS_TBL] %>
<%= transcode_tblgen "UTF-8", "EUC-JP", [["{00-7f}", :nomap], *UCS_TO_EUCJP_TBL] %>
<%= transcode_tblgen "UTF-8", "CP51932", [["{00-7f}", :nomap], *UCS_TO_EUCJP_TBL] %>
#define ISO_2022_ENCODING(escseq, byte) ((escseq<<8)|byte)
enum ISO_2022_ESCSEQ {
ISO_2022_CZD = '!',
ISO_2022_C1D = '"',
ISO_2022_GZD4 = '(',
ISO_2022_G1D4 = ')',
ISO_2022_G2D4 = '*',
ISO_2022_G3D4 = '+',
ISO_2022_G1D6 = '-',
ISO_2022_G2D6 = '.',
ISO_2022_G3D6 = '/',
ISO_2022_GZDM4 = ISO_2022_ENCODING('$','('),
ISO_2022_G1DM4 = ISO_2022_ENCODING('$',')'),
ISO_2022_G2DM4 = ISO_2022_ENCODING('$','*'),
ISO_2022_G3DM4 = ISO_2022_ENCODING('$','+'),
ISO_2022_G1DM6 = ISO_2022_ENCODING('$','-'),
ISO_2022_G2DM6 = ISO_2022_ENCODING('$','.'),
ISO_2022_G3DM6 = ISO_2022_ENCODING('$','/'),
ISO_2022_DOCS = ISO_2022_ENCODING('%','I'),
ISO_2022_IRR = '&'
};
#define ISO_2022_GZ_ASCII ISO_2022_ENCODING(ISO_2022_GZD4, 'B')
#define ISO_2022_GZ_JIS_X_0201_Katakana ISO_2022_ENCODING(ISO_2022_GZD4, 'I')
#define ISO_2022_GZ_JIS_X_0201_Roman ISO_2022_ENCODING(ISO_2022_GZD4, 'J')
#define ISO_2022_GZ_JIS_C_6226_1978 ISO_2022_ENCODING(ISO_2022_GZDM4,'@')
#define ISO_2022_GZ_JIS_X_0208_1983 ISO_2022_ENCODING(ISO_2022_GZDM4,'B')
#define ISO_2022_GZ_JIS_X_0212_1990 ISO_2022_ENCODING(ISO_2022_GZDM4,'D')
#define ISO_2022_GZ_JIS_X_0213_2000_1 ISO_2022_ENCODING(ISO_2022_GZDM4,'O')
#define ISO_2022_GZ_JIS_X_0213_2000_2 ISO_2022_ENCODING(ISO_2022_GZDM4,'P')
#define ISO_2022_GZ_JIS_X_0213_2004_1 ISO_2022_ENCODING(ISO_2022_GZDM4,'Q')
#define UNSUPPORTED_MODE TRANSCODE_ERROR
static int
get_iso_2022_mode(const unsigned char **in_pos)
{
int new_mode;
const unsigned char *in_p = *in_pos;
switch (*in_p++) {
case '(':
switch (*in_p++) {
case 'B': case 'I': case 'J':
new_mode = ISO_2022_ENCODING(ISO_2022_GZD4, *(in_p-1));
break;
default:
rb_raise(UNSUPPORTED_MODE, "this mode is not supported (ESC ( %c)", *(in_p-1));
break;
}
break;
case '$':
switch (*in_p++) {
case '@': case 'A': case 'B':
new_mode = ISO_2022_ENCODING(ISO_2022_GZDM4, *(in_p-1));
break;
case '(':
switch (*in_p++) {
case 'D': case 'O': case 'P': case 'Q':
new_mode = ISO_2022_ENCODING(ISO_2022_GZDM4, *(in_p-1));
break;
default:
rb_raise(UNSUPPORTED_MODE, "this mode is not supported (ESC $ ( %c)", *(in_p-1));
break;
}
break;
default:
rb_raise(UNSUPPORTED_MODE, "this mode is not supported (ESC $ %c)", *(in_p-1));
break;
}
break;
default:
rb_raise(UNSUPPORTED_MODE, "this mode is not supported (ESC %c)", *(in_p-1));
break;
}
*in_pos = in_p;
return new_mode;
}
static void
from_iso_2022_jp_transcoder_preprocessor(const unsigned char **in_pos, unsigned char **out_pos,
const unsigned char *in_stop, unsigned char *out_stop,
rb_transcoding *my_transcoding)
{
const rb_transcoder *my_transcoder = my_transcoding->transcoder;
const unsigned char *in_p = *in_pos;
unsigned char *out_p = *out_pos;
int cur_mode = ISO_2022_GZ_ASCII;
unsigned char c1;
unsigned char *out_s = out_stop - my_transcoder->max_output + 1;
while (in_p < in_stop) {
if (out_p >= out_s) {
int len = (out_p - *out_pos);
int new_len = (len + my_transcoder->max_output) * 2;
*out_pos = (*my_transcoding->flush_func)(my_transcoding, len, new_len);
out_p = *out_pos + len;
out_s = *out_pos + new_len - my_transcoder->max_output;
}
c1 = *in_p++;
if (c1 == 0x1B) {
cur_mode = get_iso_2022_mode(&in_p);
}
else if (c1 == 0x1E || c1 == 0x1F) {
/* SHIFT */
rb_raise(UNSUPPORTED_MODE, "shift is not supported");
}
else if (c1 >= 0x80) {
rb_raise(TRANSCODE_ERROR, "invalid byte sequence");
}
else {
switch (cur_mode) {
case ISO_2022_GZ_ASCII:
case ISO_2022_GZ_JIS_X_0201_Roman:
*out_p++ = c1;
break;
case ISO_2022_GZ_JIS_X_0201_Katakana:
*out_p++ = 0x8E;
*out_p++ = c1 | 0x80;
break;
case ISO_2022_GZ_JIS_X_0212_1990:
*out_p++ = 0x8F;
case ISO_2022_GZ_JIS_C_6226_1978:
case ISO_2022_GZ_JIS_X_0208_1983:
*out_p++ = c1 | 0x80;
*out_p++ = *in_p++ | 0x80;
break;
}
}
}
/* cleanup */
*in_pos = in_p;
*out_pos = out_p;
}
static int
select_iso_2022_mode(unsigned char **out_pos, int new_mode)
{
unsigned char *out_p = *out_pos;
*out_p++ = '\x1b';
switch (new_mode>>8) {
case ISO_2022_GZD4:
*out_p++ = new_mode >> 8;
*out_p++ = new_mode & 0x7F;
break;
case ISO_2022_GZDM4:
*out_p++ = new_mode >> 16;
if ((new_mode & 0x7F) != '@' &&
(new_mode & 0x7F) != 'A' &&
(new_mode & 0x7F) != 'B')
{
*out_p++ = (new_mode>>8) & 0x7F;
}
*out_p++ = new_mode & 0x7F;
break;
default:
rb_raise(UNSUPPORTED_MODE, "this mode is not supported.");
break;
}
*out_pos = out_p;
return new_mode;
}
static void
to_iso_2022_jp_transcoder_postprocessor(const unsigned char **in_pos, unsigned char **out_pos,
const unsigned char *in_stop, unsigned char *out_stop,
rb_transcoding *my_transcoding)
{
const rb_transcoder *my_transcoder = my_transcoding->transcoder;
const unsigned char *in_p = *in_pos;
unsigned char *out_p = *out_pos;
int cur_mode = ISO_2022_GZ_ASCII, new_mode = 0;
unsigned char next_byte;
unsigned char *out_s = out_stop - my_transcoder->max_output + 1;
while (in_p < in_stop) {
if (out_p >= out_s) {
int len = (out_p - *out_pos);
int new_len = (len + my_transcoder->max_output) * 2;
*out_pos = (*my_transcoding->flush_func)(my_transcoding, len, new_len);
out_p = *out_pos + len;
out_s = *out_pos + new_len - my_transcoder->max_output;
}
next_byte = *in_p++;
if (next_byte < 0x80) {
new_mode = ISO_2022_GZ_ASCII;
}
else if (next_byte == 0x8E) {
new_mode = ISO_2022_GZ_JIS_X_0201_Katakana;
next_byte = *in_p++;
}
else if (next_byte == 0x8F) {
new_mode = ISO_2022_GZ_JIS_X_0212_1990;
next_byte = *in_p++;
}
else {
new_mode = ISO_2022_GZ_JIS_X_0208_1983;
}
if (cur_mode != new_mode)
cur_mode = select_iso_2022_mode(&out_p, new_mode);
if (cur_mode < 0xFFFF) {
*out_p++ = next_byte & 0x7F;
}
else {
*out_p++ = next_byte & 0x7F;
*out_p++ = *in_p++ & 0x7F;
}
}
if (cur_mode != ISO_2022_GZ_ASCII)
cur_mode = select_iso_2022_mode(&out_p, ISO_2022_GZ_ASCII);
/* cleanup */
*in_pos = in_p;
*out_pos = out_p;
}
static const rb_transcoder
rb_from_ISO_2022_JP = {
"ISO-2022-JP", "UTF-8", &from_EUC_JP, 8, 0,
&from_iso_2022_jp_transcoder_preprocessor, NULL,
};
static const rb_transcoder
rb_to_ISO_2022_JP = {
"UTF-8", "ISO-2022-JP", &to_EUC_JP, 8, 1,
NULL, &to_iso_2022_jp_transcoder_postprocessor,
};
void
Init_japanese(void)
{
<%= transcode_register_code %>
rb_register_transcoder(&rb_from_ISO_2022_JP);
rb_register_transcoder(&rb_to_ISO_2022_JP);
}
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