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/* $Id: jis.c 5403 2008-02-01 05:06:12Z hio $ */
#include "Japanese.h"
#include "sjis.h"
#include <string.h>
#define S2J_DISP 0
#define J2S_DISP 0
#if S2J_DISP
#define ECHO_S2J(arg) fprintf arg
#define ON_S2J(cmd) cmd
#else
#define ECHO_S2J(arg)
#define ON_S2J(cmd)
#endif
#if J2S_DISP
#define ECHO_J2S(arg) fprintf arg
#define ON_J2S(cmd) cmd
#else
#define ECHO_J2S(arg)
#define ON_J2S(cmd)
#endif
/*
# JIS C 6226-1979 \e$@
# JIS X 0208-1983 \e$B
# JIS X 0208-1990 \e&@\e$B
# JIS X 0212-1990 \e$(D
*/
#define JIS_C6226_1979 ((const unsigned char*)"\x1b$@")
#define JIS_X0208_1983 ((const unsigned char*)"\x1b$B")
#define JIS_X0208_1990 ((const unsigned char*)"\x1b&@\x1b$B")
#define JIS_X0212_1990 ((const unsigned char*)"\x1b$(D")
#define JIS_ASC ((const unsigned char*)"\x1b(B")
#define JIS_ROMAN ((const unsigned char*)"\x1b(J")
#define JIS_KANA ((const unsigned char*)"\x1b(I")
#define JIS_C6226_1979_LEN 3
#define JIS_X0208_1983_LEN 3
#define JIS_X0208_1990_LEN 6
#define JIS_X0212_1990_LEN 4
#define JIS_ASC_LEN 3
#define JIS_ROMAN_LEN 3
#define JIS_KANA_LEN 3
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
/* sjis=>jisѴ */
EXTERN_C
SV*
xs_sjis_jis(SV* sv_str)
{
unsigned char* src;
STRLEN len;
SV_Buf result;
int esc_asc;
const unsigned char* src_end;
if( sv_str==&PL_sv_undef )
{
return newSVsv(&PL_sv_undef);
}
if( SvGMAGICAL(sv_str) )
{
mg_get(sv_str);
}
if( !SvOK(sv_str) )
{
return newSVsv(&PL_sv_undef);
}
src = (unsigned char*)SvPV(sv_str, len);
ECHO_S2J((stderr,"Unicode::Japanese::(xs)sjis_jis, len:%d\n",len));
ON_S2J(bin_dump("in ",src,len));
SV_Buf_init(&result,len+8);
esc_asc = 1;
src_end = src+len;
while( src<src_end )
{
ECHO_S2J((stderr, "switch: %02x : %d\n", *src, chk_sjis[*src]));
switch(chk_sjis[*src])
{
case CHK_SJIS_THROUGH:
{ /* SJIS:THROUGH => JIS:ASCII */
const unsigned char* begin;
if( !esc_asc )
{
SV_Buf_append_mem(&result,JIS_ASC,JIS_ASC_LEN);
esc_asc = 1;
}
#if TEST && S2J_DISP
fprintf(stderr," (throuh) %c[%02x]",*src,*src);
fflush(stderr);
#endif
begin = src;
while( ++src<src_end && chk_sjis[*src]==CHK_SJIS_THROUGH )
{
#if TEST && S2J_DISP
fprintf(stderr," %c[%02x]",*src,*src);
fflush(stderr);
#endif
}
#if TEST && S2J_DISP
fprintf(stderr,"\n");
fflush(stderr);
#endif
SV_Buf_append_mem(&result,begin,src-begin);
break;
}
case CHK_SJIS_C:
{
SV_Buf_append_mem(&result,JIS_X0208_1983,JIS_X0208_1983_LEN);
esc_asc = 0;
ECHO_S2J((stderr," (sjis:c)"));
do
{
union {
UJ_UINT16 u16_val;
UJ_UINT8 u8_val[2];
} tmp;
ECHO_S2J((stderr, "%c%c[%02x.%02x]",src[0],src[1],src[0],src[1]));
if( src[1]<0x40 || 0xfc<src[1] || src[1]==0x7f )
{
ECHO_S2J((stderr, "*"));
SV_Buf_append_mem(&result,UNDEF_JIS,UNDEF_JIS_LEN);
++src;
break;
}
if( 0x9f <= src[1] )
{
tmp.u8_val[0] = src[0]*2 - (src[0]>=0xe0 ? 0xe0 : 0x60);
tmp.u8_val[1] = src[1] + 2;
}else
{
tmp.u8_val[0] = src[0]*2 - (src[0]>=0xe0 ? 0xe1 : 0x61);
tmp.u8_val[1] = src[1] + 0x60 + (src[1] < 0x7f);
}
tmp.u8_val[0] &= 0x7f;
tmp.u8_val[1] &= 0x7f;
SV_Buf_append_ch2(&result, tmp.u16_val);
src += 2;
}while( src<src_end && chk_sjis[*src]==CHK_SJIS_C );
ECHO_S2J((stderr,"\n"));
break;
}
case CHK_SJIS_KANA:
{ /* SJIS:KANA => JIS:KANA */
SV_Buf_append_mem(&result,JIS_KANA,JIS_KANA_LEN);
esc_asc = 0;
#if TEST && S2J_DISP
fprintf(stderr," (sjis:kana)");
fflush(stderr);
#endif
do
{
#if TEST && S2J_DISP
fprintf(stderr," %02x",*src);
fflush(stderr);
#endif
SV_Buf_append_ch(&result,*src&0x7f);
}while( ++src<src_end && chk_sjis[*src]==CHK_SJIS_KANA );
#if TEST && S2J_DISP
fprintf(stderr,"\n");
#endif
break;
}
default:
{
#ifdef TEST
fprintf(stderr,"xs_sjis_eucjp, unknown check-code[%02x] on char-code[%05x]\n",chk_sjis[*src],*src);
#endif
SV_Buf_append_ch(&result,*src);
++src;
}
} /*switch */
} /*while */
if( !esc_asc )
{
SV_Buf_append_mem(&result,JIS_ASC,JIS_ASC_LEN);
}
/* bin_dump("out",SV_Buf_getBegin(&result),SV_Buf_getLength(&result)); */
SV_Buf_setLength(&result);
return SV_Buf_getSv(&result);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
/* jis=>sjisѴ */
EXTERN_C
SV*
xs_jis_sjis(SV* sv_str)
{
unsigned char* src;
STRLEN len;
SV_Buf result;
const unsigned char* src_end;
if( sv_str==&PL_sv_undef )
{
return newSVsv(&PL_sv_undef);
}
if( SvGMAGICAL(sv_str) )
{
mg_get(sv_str);
}
if( !SvOK(sv_str) )
{
return newSVsv(&PL_sv_undef);
}
src = (unsigned char*)SvPV(sv_str, len);
ECHO_J2S((stderr,"Unicode::Japanese::(xs)jis_sjis, len:%d\n",len));
ON_J2S(bin_dump("in ",src,len));
SV_Buf_init(&result,len);
src_end = src+len;
if( len!=0 && *src!='\x1b' )
{
const unsigned char* begin = src;
while( ++src<src_end && *src!='\x1b')
{
}
SV_Buf_append_mem(&result,begin,src-begin);
}
while( src<src_end )
{
ECHO_J2S((stderr," len: %d\n",src_end-src));
if( src_end-src>=JIS_ASC_LEN && memcmp(src,JIS_ASC,JIS_ASC_LEN)==0 )
{ /* <<jis.asc>> */
const unsigned char* begin;
/*fprintf(stderr," <jis.asc>\n"); */
src += JIS_ASC_LEN;
begin = src;
while( src<src_end && *src!='\x1b')
{
++src;
}
if( src!=begin )
{
SV_Buf_append_mem(&result,begin,src-begin);
}
}else if( src_end-src>=JIS_ROMAN_LEN && memcmp(src,JIS_ROMAN,JIS_ROMAN_LEN)==0 )
{ /* <<jis.roman>> */
const unsigned char* begin;
/*fprintf(stderr," <jis.roman>\n"); */
src += JIS_ROMAN_LEN;
begin = src;
while( src<src_end && *src!='\x1b')
{
++src;
}
if( src!=begin )
{
SV_Buf_append_mem(&result,begin,src-begin);
}
}else if( src_end-src>=JIS_KANA_LEN && memcmp(src,JIS_KANA,JIS_KANA_LEN)==0 )
{ /* <<jis.kana>> */
/*fprintf(stderr," <jis.kana>\n"); */
src += JIS_KANA_LEN;
while( src<src_end && *src!='\x1b')
{
SV_Buf_append_ch(&result,*src|0x80);
++src;
}
}else if( (src_end-src>=JIS_X0208_1983_LEN && memcmp(src,JIS_X0208_1983,JIS_X0208_1983_LEN)==0)
|| (src_end-src>=JIS_X0208_1990_LEN && memcmp(src,JIS_X0208_1990,JIS_X0208_1990_LEN)==0)
|| (src_end-src>=JIS_C6226_1979_LEN && memcmp(src,JIS_C6226_1979,JIS_C6226_1979_LEN)==0)
)
{ /* <<jis.0208/0212>> */
ECHO_J2S((stderr," <jis.c>");fflush(stderr));
src += src[1]!='&' ? 3 : 6;
while( src<src_end )
{
union {
UJ_UINT16 u16_val;
UJ_UINT8 u8_val[2];
} tmp;
if( *src=='\x1b' ) break;
ECHO_J2S((stderr," %02x",src[0]);fflush(stderr));
if( *src>=0x21 && *src<0x7e )
{}else
{
ECHO_J2S((stderr,"+");fflush(stderr));
break;
}
if( src+1==src_end || src[1]=='\x1b' )
{
ECHO_J2S((stderr,"*");fflush(stderr));
break;
}
ECHO_J2S((stderr," %02x",src[0]);fflush(stderr));
tmp.u8_val[0] = src[0] | 0x80;
tmp.u8_val[1] = src[1] | 0x80;
if( src[0]%2 )
{
tmp.u8_val[0] = (tmp.u8_val[0]>>1) + (tmp.u8_val[0] < 0xdf ? 0x31 : 0x71);
tmp.u8_val[1] = tmp.u8_val[1] - ( 0x60 + (tmp.u8_val[1] < 0xe0) );
}else
{
tmp.u8_val[0] = (tmp.u8_val[0]>>1) + (tmp.u8_val[0] < 0xdf ? 0x30 : 0x70);
tmp.u8_val[1] = tmp.u8_val[1] - 2;
}
SV_Buf_append_ch2(&result, tmp.u16_val);
src += 2;
}
ECHO_J2S((stderr,"\n"));
}else if( src_end-src>=JIS_X0212_1990_LEN && memcmp(src,JIS_X0212_1990,JIS_X0212_1990_LEN)==0 )
{ /* <<jis.0212>> */
const unsigned char* begin;
int i;
ECHO_J2S((stderr," <jis.0212>");fflush(stderr));
src += JIS_X0212_1990_LEN;
begin = src;
while( src<src_end && *src!='\x1b')
{
++src;
}
for( i=0; i<(src-begin)/2; ++i )
{
SV_Buf_append_mem(&result,UNDEF_SJIS,UNDEF_SJIS_LEN);
}
}else if( src[0]!='\x1b') /* !='\e' */
{ /* <<no escape>> */
const unsigned char* begin;
ECHO_J2S((stderr," <no.escape>");fflush(stderr));
begin = src;
while( src<src_end && *src!='\x1b')
{
++src;
}
if( src!=begin )
{
SV_Buf_append_mem(&result,begin,src-begin);
}
}else
{ /* <<unknown escape>> */
ECHO_J2S((stderr," <escape.unknown>");fflush(stderr));
SV_Buf_append_ch(&result,*src);
++src;
}
} /*while */
ON_J2S(bin_dump("out",SV_Buf_getBegin(&result), SV_Buf_getLength(&result)));
SV_Buf_setLength(&result);
return SV_Buf_getSv(&result);
}
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