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// $Id: conv.cpp,v 1.15 2002/07/04 04:52:29 hio Exp $
#include <stdio.h>
#include "Japanese.h"
#include <netinet/in.h>
#define DISP_S2U 0
#define DISP_U2S 0
#if DISP_U2S
#define ECHO_U2S(arg) fprintf arg
#define ON_U2S(cmd) cmd
#else
#define ECHO_U2S(arg)
#define ON_U2S(cmd)
#endif
EXTERN_C
SV*
xs_sjis_utf8(SV* sv_str)
{
if( sv_str==&PL_sv_undef )
{
return newSVsv(&PL_sv_undef);
}
STRLEN src_len;
unsigned char* src = (unsigned char*)SvPV(sv_str,src_len);
int len = sv_len(sv_str);
#if DISP_S2U
fprintf(stderr,"Unicode::Japanese::(xs)sjis_utf8\n",len);
bin_dump("in ",src,len);
#endif
//asm volatile(".int 3");
SV_Buf result(len*3/2+4);
const unsigned char* src_end = src+len;
while( src<src_end )
{
const unsigned char* ptr;
if( src[0]<0x80 )
{ // ASCII
//fprintf(stderr,"ascii: %02x\n",src[0]);
result.append(*src++);
continue;
}else if( 0xa1<=src[0] && src[0]<=0xdf )
{ // Ⱦ�ѥ���
//fprintf(stderr,"kana": %02x\n",src[0]);
ptr = (unsigned char*)&g_s2u_table[src[0]];
++src;
}else if( ((0x81<=src[0] && src[0]<=0x9f) || (0xe0<=src[0] && src[0]<=0xfc) )
&& (0x40<=src[1] && src[1]<=0xfc && src[1]!=0x7f) )
{ // 2�Х���ʸ��
register const unsigned short sjis = ntohs(*(unsigned short*)src);
//fprintf(stderr,"sjis: %04x\n",sjis);
ptr = (unsigned char*)&g_s2u_table[sjis];
src += 2;
}else
{ // ����
//fprintf(stderr,"unknown: %02x\n",src[0]);
result.append('?');
++src;
continue;
}
//fprintf(stderr,"utf8-char : %02x %02x %02x %02x\n",ptr[0],ptr[1],ptr[2],ptr[3]);
if( ptr[3] )
{
//fprintf(stderr,"utf8-len: [%d]\n",4);
result.append_ch4(*(int*)ptr);
}else if( ptr[2] )
{
//fprintf(stderr,"utf8-len: [%d]\n",3);
result.append_ch3(*(int*)ptr);
}else if( ptr[1] )
{
//fprintf(stderr,"utf8-len: [%d]\n",2);
result.append_ch2(*(short*)ptr);
}else if( ptr[0] )
{
//fprintf(stderr,"utf8-len: [%d]\n",1);
result.append(*ptr);
}else
{
result.append('?');
}
}
#if DISP_S2U
bin_dump("out",result.getBegin(),result.getLength());
#endif
result.setLength();
return result.getSv();
}
EXTERN_C
SV*
xs_utf8_sjis(SV* sv_str)
{
if( sv_str==&PL_sv_undef )
{
return newSVsv(&PL_sv_undef);
}
unsigned char* src = (unsigned char*)SvPV(sv_str,PL_na);
int len = sv_len(sv_str);
ECHO_U2S((stderr,"Unicode::Japanese::(xs)utf8_sjis\n"));
ON_U2S( bin_dump("in ",src,len) );
SV_Buf result(len+4);
const unsigned char* src_end = src+len;
while( src<src_end )
{
if( *src<=0x7f )
{
// ASCII�ϤޤȤ���ɲá�
int len = 1;
while( src+len<src_end && src[len]<=0x7f )
{
++len;
}
result.append(src,len);
src+=len;
continue;
}
// utf8��ucs���Ѵ�
// utf8�Σ�ʸ����Ĺ�������å�
int utf8_len;
if( 0xc0<=*src && *src<=0xdf )
{
utf8_len = 2;
}else if( 0xe0<=*src && *src<=0xef )
{
utf8_len = 3;
}else if( 0xf0<=*src && *src<=0xf7 )
{
utf8_len = 4;
}else if( 0xf8<=*src && *src<=0xfb )
{
utf8_len = 5;
}else if( 0xfc<=*src && *src<=0xfd )
{
utf8_len = 6;
}else
{
result.append('?');
++src;
continue;
}
// Ĺ����Ƥ뤫�����å�
if( src+utf8_len-1>=src_end )
{
ECHO_U2S((stderr," no enough buffer, here is %d, need %d\n",src_end-src,utf8_len));
result.append('?');
++src;
continue;
}
// ���Х����ܰʹߤ�������ʸ���ϰϤ���ǧ
bool succ = true;
for( int i=1; i<utf8_len; ++i )
{
if( src[i]<0x80 || 0xbf<src[i] )
{
ECHO_U2S((stderr," at %d, char out of range\n",i));
succ = false;
break;
}
}
if( !succ )
{
result.append('?');
++src;
continue;
}
// utf8����ucs�Υ����ɤ�
ECHO_U2S((stderr,"utf8-charlen: [%d]\n",utf8_len));
unsigned int ucs;
switch(utf8_len)
{
case 2:
{
ucs = ((src[0] & 0x1F)<<6)|(src[1] & 0x3F);
break;
}
case 3:
{
ucs = ((src[0] & 0x0F)<<12)|((src[1] & 0x3F)<<6)|(src[2] & 0x3F);
break;
}
case 4:
{
ucs = ((src[0] & 0x07)<<18)|((src[1] & 0x3F)<<12)|
((src[2] & 0x3f) << 6)|(src[3] & 0x3F);
break;
}
case 5:
{
ucs = ((src[0] & 0x03) << 24)|((src[1] & 0x3F) << 18)|
((src[2] & 0x3f) << 12)|((src[3] & 0x3f) << 6)|
(src[4] & 0x3F);
break;
}
case 6:
{
ucs = ((src[0] & 0x03) << 30)|((src[1] & 0x3F) << 24)|
((src[2] & 0x3f) << 18)|((src[3] & 0x3f) << 12)|
((src[4] & 0x3f) << 6)|(src[5] & 0x3F);
break;
}
default:
{
// NOT REACH HERE
ECHO_U2S((stderr,"invalid utf8-length: %d\n",utf8_len));
ucs = '?';
}
}
if( 0x0f0000<=ucs && ucs<=0x0fffff )
{ // ��ʸ��Ƚ��(sjis)
result.append('?');
assert(utf8_len>=4);
src += utf8_len;
continue;
}
if( ucs & ~0xFFFF )
{ // ucs2���ϰϳ� (ucs4���ϰ�)
result.append_entityref(ucs);
src += utf8_len;
continue;
}
// ucs => sjis
ECHO_U2S((stderr,"ucs2 [%04x]\n",ucs));
const unsigned short sjis = g_u2s_table[ucs];
ECHO_U2S((stderr,"sjis [%04x]\n",ntohs(sjis) ));
if( sjis || !ucs )
{ // �б�ʸ�����������ucs=='\0'�λ�
if( sjis & 0xff00 )
{
result.append_ch2(sjis);
}else
{
result.append((unsigned char)sjis);
}
}else if( ucs<=0x7F )
{
result.append((unsigned char)ucs);
}else
{
result.append_entityref(ucs);
}
src += utf8_len;
//bin_dump("now",dst_begin,dst-dst_begin);
} /* for */
ON_U2S( bin_dump("out",result.getBegin(),result.getLength()) );
result.setLength();
return result.getSv();
}
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