URL编码

class CURLEncode
{
private:
static CString csUnsafeString;
CString (char num, int radix);
bool isUnsafe(char compareChar);
CString convert(char val);
 
public:
CURLEncode() { };
virtual ~CURLEncode() { };
CString (CString vData);
};
 
bool CURLEncode::isUnsafe(char compareChar)
{
bool bcharfound = false;
char tmpsafeChar;
int m_strLen = 0;
 
m_strLen = csUnsafeString.GetLength();
for(int ichar_pos = 0; ichar_pos < m_strLen ;ichar_pos++)
{
tmpsafeChar = csUnsafeString.GetAt(ichar_pos);
if(tmpsafeChar == compareChar)
{
bcharfound = true;
break;
}
}
int char_ascii_value = 0;
//char_ascii_value = __toascii(compareChar);
char_ascii_value = (int) compareChar;
 
if(bcharfound == false &&  char_ascii_value > 32 &&
char_ascii_value < 123)
{
return false;
}
// found no unsafe chars, return false
else
{
return true;
}
 
return true;
}
 
CString CURLEncode::decToHex(char num, int radix)
{
int temp=0;
CString csTmp;
int num_char;
 
num_char = (int) num;
if (num_char < 0)
num_char = 256 + num_char;
 
while (num_char >= radix)
{
temp = num_char % radix;
num_char = (int)floor(num_char / radix);
csTmp = hexVals[temp];
}
 
csTmp += hexVals[num_char];
 
if(csTmp.GetLength() < 2)
{
csTmp += ''0'';
}
 
CString strdecToHex(csTmp);
// Reverse the String
strdecToHex.MakeReverse();
 
return strdecToHex;
}
 
CString CURLEncode::convert(char val)
{
CString csRet;
csRet += "%";
csRet += decToHex(val, 16);
return  csRet;
}