static string encode(string str)
{
var inBytes = TextEncoding.UTF8.GetBytes(str);
var encoder = new QuotedPrintableEncoder(inBytes.ToInStream());
var encoded = encoder.ToArray();
return TextEncoding.UTF8.GetString(encoded);
}
public void TestQuotedPrintableEncode()
{
const string expected = "This is an ordinary text message in which my name (=ED=E5=EC=F9 =EF=E1=\n =E9=EC=E8=F4=F0)\nis in Hebrew (=FA=E9=F8=E1=F2).\n";
const string input = "This is an ordinary text message in which my name (םולש ןב ילטפנ)\nis in Hebrew (תירבע).\n";
var encoding = Encoding.GetEncoding("iso-8859-8");
var encoder = new QuotedPrintableEncoder();
var output = new byte[4096];
var buf = encoding.GetBytes(input);
int n = encoder.Flush(buf, 0, buf.Length, output);
var actual = Encoding.ASCII.GetString(output, 0, n);
Assert.AreEqual(expected, actual);
}
protected string EncodeQuotedPrintable(byte[] inputBytes)
{
try
{
QuotedPrintableEncoder encoder = new QuotedPrintableEncoder();
byte[] outputBytes = new byte[encoder.EstimateOutputLength(inputBytes.Length)];
int length = encoder.Encode(inputBytes, 0, inputBytes.Length, outputBytes);
return(Encoding.UTF8.GetString(outputBytes.Take(length).ToArray()));
}
catch
{
return(null);
}
}
public void TestQuotedPrintableEncodeSpaceUnixLineBreak()
{
const string input = "This line ends with a space \nbefore a line break.";
const string expected = "This line ends with a space=20\nbefore a line break.";
var encoder = new QuotedPrintableEncoder();
var output = new byte[1024];
string actual;
byte[] buf;
int n;
Assert.AreEqual(ContentEncoding.QuotedPrintable, encoder.Encoding);
buf = Encoding.ASCII.GetBytes(input);
n = encoder.Flush(buf, 0, buf.Length, output);
actual = Encoding.ASCII.GetString(output, 0, n);
Assert.AreEqual(expected, actual);
}
public static string EncodeQuotedPrintableText(string text)
{
var encoder = new QuotedPrintableEncoder();
var buffer = Encoding.UTF8.GetBytes(text);
var multiplier = 3.0d;
while (true)
{
try
{
var length = (int)Math.Floor(buffer.Length * multiplier);
var output = new byte[length];
var count = encoder.Encode(buffer, 0, buffer.Length, output);
return(Encoding.ASCII.GetString(output, 0, count));
}
catch (ArgumentException)
{
multiplier *= 1.44;
}
}
}
static XEMailMessagesHandler()
{
encoder = new ContentEncoder();
qpEncoder = new QuotedPrintableEncoder();
}
