Andrew's Garage

[개발/VC++] URLEncode, URLDecode, UTF8 변환 소스
[유니코드 문자집합용]
CString Unicode_URLDecode( CString strEncodedText )
{
CString strResult;
wchar_t ch0, ch1, ch2;
wchar_t wch;
TCHAR tch;
int i = 0;
while( i<strEncodedText.GetLength() )
{
tch = strEncodedText.GetAt(i);

if( tch != _T(‘%’) )
{
// a character not encoded
strResult += tch;
i++;
}
else
{
// a character encoded !!
ch0 = _tcstol( strEncodedText.Mid( i+1, 2 ), NULL, 16 );
i += 3;
if( ch0 < 0x80 )
// 1 byte for UTF-8
// 0xxx xxxx
wch = ch0;
else
{
if( strEncodedText.GetAt(i)!= _T(‘%’) ) // Error!
continue;
ch1 = _tcstol( strEncodedText.Mid( i+1, 2 ), NULL, 16 );
i += 3;
if( ch0 < 0xe0 )
{
// 2 byte for UTF-8
// 110x xxxx 10xx xxxx
wch = ((ch0&0x1f)<<6)
| (ch1&0x3f);
}
else
{
// 3 byte for UTF-8
if( strEncodedText.GetAt(i)!= _T(‘%’) ) // Error!
continue;
ch2 = _tcstol( strEncodedText.Mid( i+1, 2 ), NULL, 16 );
i += 3;
     // 1110 xxxx 10xx xxxx 10xx xxxx
wch = ((ch0&0x0f)<<12)
| ((ch1&0x3f)<<6)
| (ch2&0x3f);
}
}
strResult += wch;
}
}
return strResult;
}

 

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[멀티바이트 문자집합용]
inline BYTE CURLEncode::toHex(const BYTE &x) {
return x > 9 ? x + 55: x + 48;
}
inline BYTE CURLEncode::toByte(const BYTE &x) {
return x > 57? x – 55: x – 48;
}

CString CURLEncode::URLDecode(CString sIn)
{
CString sOut;
const int nLen = sIn.GetLength() + 1;
register LPBYTE pOutTmp = NULL;
LPBYTE pOutBuf = NULL;
register LPBYTE pInTmp = NULL;
LPBYTE pInBuf =(LPBYTE)sIn.GetBuffer(nLen);
//alloc out buffer
pOutBuf = (LPBYTE)sOut.GetBuffer(nLen);

if(pOutBuf)
{
pInTmp   = pInBuf;
pOutTmp = pOutBuf;
// do encoding
while (*pInTmp)
{
if(‘%’==*pInTmp)
{
pInTmp++;
*pOutTmp++ = (toByte(*pInTmp)%16<<4) + toByte(*(pInTmp+1))%16;
pInTmp++;
}
else if(‘+’==*pInTmp)
*pOutTmp++ = ‘ ‘;
else
*pOutTmp++ = *pInTmp;
pInTmp++;
}
*pOutTmp = ‘’;
sOut.ReleaseBuffer();
}
sIn.ReleaseBuffer();

return sOut;
}
CString CURLEncode::URLEncode(CString sIn)
{
CString sOut;
const int nLen = sIn.GetLength() + 1;
register LPBYTE pOutTmp = NULL;
LPBYTE pOutBuf = NULL;
register LPBYTE pInTmp = NULL;
LPBYTE pInBuf =(LPBYTE)sIn.GetBuffer(nLen);
//alloc out buffer
pOutBuf = (LPBYTE)sOut.GetBuffer(nLen*3);

if(pOutBuf)
{
pInTmp   = pInBuf;
pOutTmp = pOutBuf;
// do encoding
while (*pInTmp)
{
if(isalnum(*pInTmp) || ‘-‘==*pInTmp || ‘_’==*pInTmp || ‘.’==*pInTmp)
*pOutTmp++ = *pInTmp;
else if(isspace(*pInTmp))
*pOutTmp++ = ‘+’;
else
{
*pOutTmp++ = ‘%’;
*pOutTmp++ = toHex(*pInTmp>>4);
*pOutTmp++ = toHex(*pInTmp%16);
}
pInTmp++;
}
*pOutTmp = ‘’;
sOut.ReleaseBuffer();
}
sIn.ReleaseBuffer();

return sOut;
}