[개발/VC++] URLEncode, URLDecode, UTF8 변환 소스

[개발/VC++] URLEncode, URLDecode, UTF8 변환 소스

아래 소스는 멀티바이트 문자집합 프로젝트 설정으로 작업해야 작동된다.

inline BYTE toHex(const BYTE &x)
{
       return x > 9 ? x + 55: x + 48;
}

CString 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);
       BYTE b = 0;

       //alloc out buffer
       pOutBuf = (LPBYTE)sOut.GetBuffer(nLen*3 - 2);//new BYTE [nLen * 3];

       if(pOutBuf)
       {
             pInTmp   = pInBuf;
              pOutTmp = pOutBuf;

              // do encoding
              while (*pInTmp)
              {
                     if(isalnum(*pInTmp))
                            *pOutTmp++ = *pInTmp;
                     else
                            if(isspace(*pInTmp))
                                   *pOutTmp++ = '+';
                            else
                            {
                                   *pOutTmp++ = '%';
                                   *pOutTmp++ = toHex(*pInTmp>>4);
                                   *pOutTmp++ = toHex(*pInTmp%16);
                            }
                     pInTmp++;
              }
              *pOutTmp = '\0';
              //sOut=pOutBuf;
              //delete [] pOutBuf;
              sOut.ReleaseBuffer();
       }
       sIn.ReleaseBuffer();
       return sOut;
}

UrlDecode：
#define IsHexNum(c) ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f'))

CString Utf8ToStringT(LPSTR str)
{
    _ASSERT(str);
    USES_CONVERSION;
    WCHAR *buf;
    int length = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
    buf = new WCHAR[length+1];
    ZeroMemory(buf, (length+1) * sizeof(WCHAR));
    MultiByteToWideChar(CP_UTF8, 0, str, -1, buf, length);

    return (CString(W2T(buf)));
}

CString UrlDecode(LPCTSTR url)
{
    _ASSERT(url);
    USES_CONVERSION;
    LPSTR _url = T2A(const_cast<LPTSTR>(url));
    int i = 0;
    int length = (int)strlen(_url);
    CHAR *buf = new CHAR[length];
    ZeroMemory(buf, length);
    LPSTR p = buf;
    while(i < length)
    {
        if(i <= length -3 && _url[i] == '%' && IsHexNum(_url[i+1]) && IsHexNum(_url[i+2]))
        {
            sscanf(_url + i + 1, "%x", p++);
            i += 3;
        }
        else
        {
            *(p++) = _url[i++];
        }
    }
    return Utf8ToStringT(buf);
}