174 lines
4.1 KiB
Plaintext
174 lines
4.1 KiB
Plaintext
#include "transcode_data.h"
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<%
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map = {}
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map["1b2842"] = :func_so # designate US-ASCII to G0. "ESC ( B"
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map["1b284a"] = :func_so # designate JIS X 0201 latin to G0. "ESC ( J"
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map["1b2440"] = :func_so # designate JIS X 0208 1978 to G0. "ESC $ @"
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map["1b2442"] = :func_so # designate JIS X 0208 1983 to G0. "ESC $ B"
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map["{00-0d,10-1a,1c-7f}"] = :func_si
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map_jisx0208_rest = {}
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map_jisx0208_rest["{21-7e}"] = :func_so
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transcode_generate_node(ActionMap.parse(map), "iso2022jp_to_eucjp")
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transcode_generate_node(ActionMap.parse(map_jisx0208_rest), "iso2022jp_to_eucjp_jisx0208_rest")
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map_eucjp = {
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"{0e,0f,1b}" => :undef,
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"{00-0d,10-1a,1c-7f}" => :func_so,
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"{a1-fe}{a1-fe}" => :func_so,
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"8e{a1-fe}" => :undef,
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"8f{a1-fe}{a1-fe}" => :undef,
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}
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transcode_generate_node(ActionMap.parse(map_eucjp), "eucjp_to_iso2022jp")
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%>
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<%= transcode_generated_code %>
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#define G0_ASCII 0
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#define G0_JISX0208 1
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static int
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iso2022jp_init(void *statep)
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{
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unsigned char *sp = statep;
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*sp = G0_ASCII;
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return 0;
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}
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static VALUE
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fun_si_iso2022jp_to_eucjp(void *statep, const unsigned char *s, size_t l)
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{
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unsigned char *sp = statep;
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if (*sp == G0_ASCII)
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return (VALUE)NOMAP;
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else if (0x21 <= s[0] && s[0] <= 0x7e)
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return (VALUE)iso2022jp_to_eucjp_jisx0208_rest;
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else
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return (VALUE)INVALID;
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}
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static int
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fun_so_iso2022jp_to_eucjp(void *statep, const unsigned char *s, size_t l, unsigned char* o)
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{
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unsigned char *sp = statep;
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if (s[0] == 0x1b) {
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if (s[1] == '(') {
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switch (s[l-1]) {
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case 'B':
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case 'J':
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*sp = G0_ASCII;
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break;
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}
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}
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else {
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switch (s[l-1]) {
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case '@':
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case 'B':
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*sp = G0_JISX0208;
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break;
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}
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}
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return 0;
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}
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else {
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o[0] = s[0] | 0x80;
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o[1] = s[1] | 0x80;
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return 2;
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}
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}
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static const rb_transcoder
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rb_ISO_2022_JP_to_EUC_JP = {
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"ISO-2022-JP", "EUC-JP", iso2022jp_to_eucjp,
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TRANSCODE_TABLE_INFO,
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1, /* input_unit_length */
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3, /* max_input */
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3, /* max_output */
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stateful_decoder, /* stateful_type */
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1, iso2022jp_init, iso2022jp_init, /* state_size, state_init, state_fini */
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NULL, fun_si_iso2022jp_to_eucjp, NULL, fun_so_iso2022jp_to_eucjp
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};
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static int
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fun_so_eucjp_to_iso2022jp(void *statep, const unsigned char *s, size_t l, unsigned char *o)
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{
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unsigned char *sp = statep;
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unsigned char *output0 = o;
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if (*sp != (l == 1 ? G0_ASCII : G0_JISX0208)) {
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if (l == 1) {
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*o++ = 0x1b;
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*o++ = '(';
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*o++ = 'B';
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*sp = G0_ASCII;
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}
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else {
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*o++ = 0x1b;
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*o++ = '$';
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*o++ = 'B';
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*sp = G0_JISX0208; /* JIS X 0208 1983 */
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}
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}
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if (l == 1) {
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*o++ = s[0] & 0x7f;
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}
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else {
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*o++ = s[0] & 0x7f;
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*o++ = s[1] & 0x7f;
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}
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return o - output0;
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}
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static int
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iso2022jp_reset_sequence_size(void *statep)
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{
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unsigned char *sp = statep;
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if (*sp == G0_JISX0208)
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return 3;
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return 0;
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}
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static int
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finish_eucjp_to_iso2022jp(void *statep, unsigned char *o)
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{
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unsigned char *sp = statep;
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unsigned char *output0 = o;
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if (*sp == G0_ASCII)
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return 0;
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*o++ = 0x1b;
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*o++ = '(';
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*o++ = 'B';
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*sp = G0_ASCII;
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return o - output0;
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}
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static const rb_transcoder
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rb_EUC_JP_to_ISO_2022_JP = {
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"EUC-JP", "ISO-2022-JP", eucjp_to_iso2022jp,
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TRANSCODE_TABLE_INFO,
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1, /* input_unit_length */
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3, /* max_input */
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5, /* max_output */
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stateful_encoder, /* stateful_type */
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1, iso2022jp_init, iso2022jp_init, /* state_size, state_init, state_fini */
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NULL, NULL, NULL, fun_so_eucjp_to_iso2022jp,
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finish_eucjp_to_iso2022jp,
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iso2022jp_reset_sequence_size, finish_eucjp_to_iso2022jp
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};
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void
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Init_iso2022(void)
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{
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rb_register_transcoder(&rb_ISO_2022_JP_to_EUC_JP);
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rb_register_transcoder(&rb_EUC_JP_to_ISO_2022_JP);
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}
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