RelaxedCanonicalization::CanonicalizeHeaderValue(AnsiString value)
      Unfold all header field continuation lines as described in
      [RFC2822]; in particular, lines with terminators embedded in
      continued header field values (that is, CRLF sequences followed by
      WSP) MUST be interpreted without the CRLF.  Implementations MUST
      NOT remove the CRLF at the end of the header field value.

      value.Replace("\r\n ", " ");
      value.Replace("\r\n\t", " ");

      Convert all sequences of one or more WSP characters to a single SP
      character.  WSP characters here include those before and after a
      line folding boundary.

      value.Replace("\t ", " ");
      value.Replace(" \t", " ");
      while (value.Find("  ") >= 0)
         value.Replace("  ", " ");

      Delete all WSP characters at the end of each unfolded header field value.

      while (value.EndsWith(" ") || value.EndsWith("\t"))
         value = value.Mid(0, value.GetLength() -1);

      /* Delete any WSP characters remaining before and after the colon
      separating the header field name from the header field value.  The
      colon separator MUST be retained.

      return value;
Example #2
   Base64::Decode(const char *input, int inputLength)
      // base64 encode the signature.
      MimeCodeBase64 decoder;
      decoder.SetInput(input, inputLength, false);

      AnsiString sEncodedValue;

      // the MIME encoder will insert newlines. We don't want this
      // here since this is a generic base64 encoder which may be
      // used in none-mime environments (key encoding anyone?)
      sEncodedValue.Replace("\r\n", "");

      return sEncodedValue;