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#include "Japanese.h"
#include "sjis.h"
#ifdef TEST
#define DISP_E2S 0
#define DISP_S2E 0
#endif
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
/* sjis=>eucjp�Ѵ� */
EXTERN_C
SV*
xs_sjis_eucjp(SV* sv_str)
{
unsigned char* src;
int len;
SV_Buf result;
const unsigned char* src_end;
if( sv_str==&PL_sv_undef )
{
return newSVsv(&PL_sv_undef);
}
src = (unsigned char*)SvPV(sv_str,PL_na);
len = sv_len(sv_str);
/*fprintf(stderr,"Unicode::Japanese::(xs)sjis_eucjp\n",len); */
/*bin_dump("in ",src,len); */
SV_Buf_init(&result,len);
src_end = src+len;
while( src<src_end )
{
switch(chk_sjis[*src])
{
case CHK_SJIS_THROUGH:
{
const unsigned char* start = src;
while( ++src<src_end && chk_sjis[*src]==CHK_SJIS_THROUGH );
SV_Buf_append_mem(&result,start,src-start);
continue;
}
case CHK_SJIS_C:
{
if( src+2-1<src_end && 0x40<=src[1] && src[1]<=0xfc && src[1]!=0x7f )
{
unsigned char tmp[2];
if( 0x9f <= src[1] )
{
tmp[0] = src[0]*2 - (src[0]>=0xe0 ? 0xe0 : 0x60);
tmp[1] = src[1] + 2;
}else
{
tmp[0] = src[0]*2 - (src[0]>=0xe0 ? 0xe1 : 0x61);
tmp[1] = src[1] + 0x60 + (src[1] < 0x7f);
}
SV_Buf_append_ch2(&result,*(unsigned short*)tmp);
src += 2;
continue;
}
break;
}
case CHK_SJIS_KANA:
{
unsigned char tmp[2] = { 0x8e, 0x00, };
tmp[1] = src[0];
SV_Buf_append_ch2(&result,*(unsigned short*)tmp);
++src;
continue;
}
default:
{
#ifdef TEST
fprintf(stderr,"xs_sjis_eucjp: invalid value [%02x] at chk_sjis[%05x]\n",chk_sjis[*src],*src);
#endif
SV_Buf_append_ch(&result,*src);
++src;
}
} /*switch */
/* invalid char */
SV_Buf_append_ch(&result,*src);
++src;
} /*while */
/*bin_dump("out",result.getBegin(),result.getLength()); */
SV_Buf_setLength(&result);
return SV_Buf_getSv(&result);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
/* eucjp=>sjis�Ѵ�ʸ��Ƚ�� */
/* 1:EUCJP:0212, 3:EUCJP:C 4:EUCJP:KANA */
#define CHK_EUCJP_THROUGH 0
#define CHK_EUCJP_0212 1
#define CHK_EUCJP_C 3
#define CHK_EUCJP_KANA 4
static const unsigned char chk_eucjp[256] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 2 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 3 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 4 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 5 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 6 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 7 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 1, /* 8 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 9 */
0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* a */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* b */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* c */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* d */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* e */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, /* f */
};
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
/* eucjp=>sjis�Ѵ� */
EXTERN_C
SV*
xs_eucjp_sjis(SV* sv_str)
{
unsigned char* src;
int len;
SV_Buf result;
const unsigned char* src_end;
if( sv_str==&PL_sv_undef )
{
return newSVsv(&PL_sv_undef);
}
src = (unsigned char*)SvPV(sv_str,PL_na);
len = sv_len(sv_str);
#if DISP_E2S
fprintf(stderr,"Unicode::Japanese::(xs)eucjp_sjis\n",len);
bin_dump("in ",src,len);
#endif
SV_Buf_init(&result,len);
src_end = src+len;
while( src<src_end )
{
switch(chk_eucjp[*src])
{
case CHK_EUCJP_THROUGH:
{
const unsigned char* start = src;
while( ++src<src_end && chk_eucjp[*src]==CHK_EUCJP_THROUGH );
SV_Buf_append_mem(&result,start,src-start);
continue;
}
case CHK_EUCJP_0212:
{
if( src+3-1<src_end )
{
SV_Buf_append_mem(&result,UNDEF_SJIS,UNDEF_SJIS_LEN);
src += 3;
continue;
}
break;
}
case CHK_EUCJP_C:
{
if( src+2-1<src_end && 0xa1<=src[1] && src[1]<=0xfe )
{
unsigned char tmp[2];
if( src[0]%2 )
{
tmp[0] = (src[0]>>1) + (src[0] < 0xdf ? 0x31 : 0x71);
tmp[1] = src[1] - ( 0x60 + (src[1] < 0xe0) );
}else
{
tmp[0] = (src[0]>>1) + (src[0] < 0xdf ? 0x30 : 0x70);
tmp[1] = src[1] - 2;
}
SV_Buf_append_ch2(&result,*(unsigned short*)tmp);
src += 2;
continue;
}
break;
}
case CHK_EUCJP_KANA:
{
if( src+2-1<src_end && 0xa1<=src[1] && src[1]<=0xdf )
{
SV_Buf_append_ch(&result,src[1]);
src += 2;
continue;
}
break;
}
default:
{
#ifdef TEST
fprintf(stderr,"xs_eucjp_sjis, invalid value [%02x] at chk_sjis[%05x]\n",chk_sjis[*src],*src);
#endif
}
} /*switch */
/* invalid char */
SV_Buf_append_ch(&result,*src);
++src;
} /*while */
#if DISP_E2S
bin_dump("out",result.getBegin(),result.getLength());
#endif
SV_Buf_setLength(&result);
return SV_Buf_getSv(&result);
}
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