/// <summary> decodes a string to byte array</summary>
public static byte[] decodeToByte(String str)
{
if (str == null)
{
return(null);
}
// QCR 740918 if we have and empty expression it is sent from the server as empty string
// and changed locally to a string with one blank either way they are not valid base64 encoded
// string and should not be decoded.
if (str.Equals("") || str.Equals(" "))
{
return(new byte[0]);
}
try
{
Encoding base64Encoding = ISO_8859_1_Encoding.getInstance();
return(decode(base64Encoding.GetBytes(str)));
}
catch (Exception uee)
{
throw new ApplicationException(uee.Message);
}
}
/// <summary> Encodes string using the base64-encoding.
/// If isUseEnvCharset is true, use the specific charset when converting
/// string to byte array. (DBCS support)
/// </summary>
/// <param name="str">the string </param>
/// <param name="isUseEnvCharset"> </param>
/// <param name="encoding"> Environment.Encoding </param>
/// <returns> the base64-encoded str </returns>
public static String encode(String str, bool isUseEnvCharset, Encoding encoding)
{
if (str == null)
{
return(null);
}
if (str.Equals(""))
{
return(str);
}
try
{
Encoding base64Encoding = ISO_8859_1_Encoding.getInstance();
Encoding srcEncoding = isUseEnvCharset ? encoding : base64Encoding;
byte[] ba = encode(srcEncoding.GetBytes(str));
return(base64Encoding.GetString(ba, 0, ba.Length));
}
catch (Exception uee)
{
throw new ApplicationException(uee.Message);
}
}
/// <summary> This method decodes the given string using the base64-encoding
/// specified in RFC-2045 (Section 6.8).
/// </summary>
/// <param name="str">the base64-encoded string. </param>
/// <param name="encoding">Environment.Encoding or null.</param>
/// <returns> the decoded str.</returns>
public static String decode(String str, Encoding encoding)
{
if (str == null)
{
return(null);
}
if (str.Equals(""))
{
return(str);
}
try
{
Encoding base64Encoding = ISO_8859_1_Encoding.getInstance();
byte[] ba = decode(base64Encoding.GetBytes(str));
Encoding destEncoding = (encoding != null) ? encoding : base64Encoding;
return(destEncoding.GetString(ba, 0, ba.Length));
}
catch (Exception uee)
{
throw new ApplicationException(uee.Message);
}
}