Function PercentEncode

Source/MediaInfo/Reader/Reader_libcurl.cpp:222–241

    In+=(char)((l>=10?'A'-10:'0')+l);
}
string PercentEncode(const string& In)
{
    string Result;
    for (string::size_type i=0; i<In.size(); i++)
    {
        char C=In[i];
        if ((C>='0' && C<='9')
         || (C>='A' && C<='Z')
         || (C>='a' && C<='z')
         || C=='/' // Directory separator
         || C=='-'
         || C=='.'
         || C=='_'
         || C=='~')
            Result+=In[i];
        else
            PercentEncode_Add(Result, C);
    }
    return Result;
}
string PercentDecode(const string& In)
{
    string Result;