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#include "transcode_data.h"
<%
map = {
"1b2842" => :func_so, # designate US-ASCII to G0. "ESC ( B"
"1b284a" => :func_so, # designate JIS X 0201 latin to G0. "ESC ( J"
"1b2440" => :func_so, # designate JIS X 0208 1978 to G0. "ESC $ @"
"1b2442" => :func_so, # designate JIS X 0208 1983 to G0. "ESC $ B"
"{00-0d,10-1a,1c-7f}" => :func_si,
}
transcode_generate_node(ActionMap.parse(map), "iso2022jp_decoder")
map_jisx0208_rest = {
"{21-7e}" => :func_so
}
transcode_generate_node(ActionMap.parse(map_jisx0208_rest), "iso2022jp_decoder_jisx0208_rest")
map = {
"{00-0d,10-1a,1c-7f}" => :func_so,
"90{a1-fe}{a1-fe}" => :func_so,
"92{a1-fe}{a1-fe}" => :func_so,
}
transcode_generate_node(ActionMap.parse(map), "iso2022jp_encoder")
map = {
"{00-0d,10-1a,1c-7f}" => :nomap,
"90{a1-fe}{a1-fe}" => :func_so,
"92{a1-fe}{a1-fe}" => :func_so,
}
transcode_generate_node(ActionMap.parse(map), "stateless_iso2022jp_to_eucjp")
map = {
"{0e,0f,1b}" => :undef,
"{00-0d,10-1a,1c-7f}" => :nomap,
"{a1-fe}{a1-fe}" => :func_so,
"8e{a1-fe}" => :undef,
"8f{a1-fe}{a1-fe}" => :undef,
}
transcode_generate_node(ActionMap.parse(map), "eucjp_to_stateless_iso2022jp")
%>
<%= transcode_generated_code %>
#define G0_ASCII 0
/* ignore JIS X 0201 latin */
#define G0_JISX0208_1978 1
#define G0_JISX0208_1983 2
#define EMACS_MULE_LEADING_CODE_JISX0208_1978 0220
#define EMACS_MULE_LEADING_CODE_JISX0208_1983 0222
static int
iso2022jp_init(void *statep)
{
unsigned char *sp = statep;
*sp = G0_ASCII;
return 0;
}
static VALUE
fun_si_iso2022jp_decoder(void *statep, const unsigned char *s, size_t l)
{
unsigned char *sp = statep;
if (*sp == G0_ASCII)
return (VALUE)NOMAP;
else if (0x21 <= s[0] && s[0] <= 0x7e)
return (VALUE)iso2022jp_decoder_jisx0208_rest;
else
return (VALUE)INVALID;
}
static ssize_t
fun_so_iso2022jp_decoder(void *statep, const unsigned char *s, size_t l, unsigned char* o, size_t osize)
{
unsigned char *sp = statep;
if (s[0] == 0x1b) {
if (s[1] == '(') {
switch (s[l-1]) {
case 'B':
case 'J':
*sp = G0_ASCII;
break;
}
}
else {
switch (s[l-1]) {
case '@':
*sp = G0_JISX0208_1978;
break;
case 'B':
*sp = G0_JISX0208_1983;
break;
}
}
return 0;
}
else {
if (*sp == G0_JISX0208_1978)
o[0] = EMACS_MULE_LEADING_CODE_JISX0208_1978;
else
o[0] = EMACS_MULE_LEADING_CODE_JISX0208_1983;
o[1] = s[0] | 0x80;
o[2] = s[1] | 0x80;
return 3;
}
}
static const rb_transcoder
rb_iso2022jp_decoder = {
"ISO-2022-JP", "stateless-ISO-2022-JP", iso2022jp_decoder,
TRANSCODE_TABLE_INFO,
1, /* input_unit_length */
3, /* max_input */
3, /* max_output */
asciicompat_decoder, /* asciicompat_type */
1, iso2022jp_init, iso2022jp_init, /* state_size, state_init, state_fini */
NULL, fun_si_iso2022jp_decoder, NULL, fun_so_iso2022jp_decoder
};
static ssize_t
fun_so_iso2022jp_encoder(void *statep, const unsigned char *s, size_t l, unsigned char *o, size_t osize)
{
unsigned char *sp = statep;
unsigned char *output0 = o;
int newstate;
if (l == 1)
newstate = G0_ASCII;
else if (s[0] == EMACS_MULE_LEADING_CODE_JISX0208_1978)
newstate = G0_JISX0208_1978;
else
newstate = G0_JISX0208_1983;
if (*sp != newstate) {
if (newstate == G0_ASCII) {
*o++ = 0x1b;
*o++ = '(';
*o++ = 'B';
}
else if (newstate == G0_JISX0208_1978) {
*o++ = 0x1b;
*o++ = '$';
*o++ = '@';
}
else {
*o++ = 0x1b;
*o++ = '$';
*o++ = 'B';
}
*sp = newstate;
}
if (l == 1) {
*o++ = s[0] & 0x7f;
}
else {
*o++ = s[1] & 0x7f;
*o++ = s[2] & 0x7f;
}
return o - output0;
}
static ssize_t
iso2022jp_encoder_reset_sequence_size(void *statep)
{
unsigned char *sp = statep;
if (*sp != G0_ASCII)
return 3;
return 0;
}
static ssize_t
finish_iso2022jp_encoder(void *statep, unsigned char *o, size_t osize)
{
unsigned char *sp = statep;
unsigned char *output0 = o;
if (*sp == G0_ASCII)
return 0;
*o++ = 0x1b;
*o++ = '(';
*o++ = 'B';
*sp = G0_ASCII;
return o - output0;
}
static const rb_transcoder
rb_iso2022jp_encoder = {
"stateless-ISO-2022-JP", "ISO-2022-JP", iso2022jp_encoder,
TRANSCODE_TABLE_INFO,
1, /* input_unit_length */
3, /* max_input */
5, /* max_output */
asciicompat_encoder, /* asciicompat_type */
1, iso2022jp_init, iso2022jp_init, /* state_size, state_init, state_fini */
NULL, NULL, NULL, fun_so_iso2022jp_encoder,
finish_iso2022jp_encoder,
iso2022jp_encoder_reset_sequence_size, finish_iso2022jp_encoder
};
static ssize_t
fun_so_stateless_iso2022jp_to_eucjp(void *statep, const unsigned char *s, size_t l, unsigned char *o, size_t osize)
{
o[0] = s[1];
o[1] = s[2];
return 2;
}
static const rb_transcoder
rb_stateless_iso2022jp_to_eucjp = {
"stateless-ISO-2022-JP", "EUC-JP", stateless_iso2022jp_to_eucjp,
TRANSCODE_TABLE_INFO,
1, /* input_unit_length */
3, /* max_input */
2, /* max_output */
asciicompat_converter, /* asciicompat_type */
0, NULL, NULL, /* state_size, state_init, state_fini */
NULL, NULL, NULL, fun_so_stateless_iso2022jp_to_eucjp,
};
static ssize_t
fun_so_eucjp_to_stateless_iso2022jp(void *statep, const unsigned char *s, size_t l, unsigned char *o, size_t osize)
{
o[0] = EMACS_MULE_LEADING_CODE_JISX0208_1983;
o[1] = s[0];
o[2] = s[1];
return 3;
}
static const rb_transcoder
rb_eucjp_to_stateless_iso2022jp = {
"EUC-JP", "stateless-ISO-2022-JP", eucjp_to_stateless_iso2022jp,
TRANSCODE_TABLE_INFO,
1, /* input_unit_length */
3, /* max_input */
3, /* max_output */
asciicompat_converter, /* asciicompat_type */
0, NULL, NULL, /* state_size, state_init, state_fini */
NULL, NULL, NULL, fun_so_eucjp_to_stateless_iso2022jp,
};
void
Init_iso2022(void)
{
rb_register_transcoder(&rb_iso2022jp_decoder);
rb_register_transcoder(&rb_iso2022jp_encoder);
rb_register_transcoder(&rb_stateless_iso2022jp_to_eucjp);
rb_register_transcoder(&rb_eucjp_to_stateless_iso2022jp);
}
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