public object FetchSection(long uid, ImapBodyPart part, bool peek)
{
SendReceiveResult result = SendReceive(string.Format("UID FETCH {0} BODY{1}[{2}]",
uid, peek ? ".PEEK" : string.Empty, part.Section));
byte[] bytes = null;
Encoding enc = null;
try
{
enc = Encoding.GetEncoding(part.ContentType.CharSet.Trim(new char[] { '"' }));
}
catch (ArgumentException) { }
if (null == enc)
{
// Fall back on ASCII if we have any trouble getting the encoding for
// specified character set.
enc = ASCIIEncoding.ASCII;
}
if (result.Status == SendReceiveStatus.OK)
{
ImapList sectionList = null;
string sectionLine = null;
SafeEnumerateLines(result.Lines, (line) =>
{
bool keepGoing = true;
if (sectionList == null)
{
ImapList list = ImapList.Parse(line);
if (list.GetStringAt(0) == "*" &&
list.GetStringAt(2) == "FETCH")
{
sectionList = list;
}
}
else if (sectionLine == null)
{
sectionLine = line;
}
else if (line == ")")
{
if (!string.IsNullOrEmpty(sectionLine))
{
if (part.Encoding.Equals("BASE64", StringComparison.InvariantCultureIgnoreCase))
{
try
{
bytes = Convert.FromBase64String(sectionLine);
}
catch
{
}
}
else if (
part.Encoding.Equals("7BIT", StringComparison.InvariantCultureIgnoreCase) ||
part.Encoding.Equals("8BIT", StringComparison.InvariantCultureIgnoreCase))
{
bytes = Encoding.ASCII.GetBytes(sectionLine);
}
else if (
part.Encoding.Equals("QUOTED-PRINTABLE", StringComparison.InvariantCultureIgnoreCase))
{
var qpDecoded = RFC2047Decoder.ParseQuotedPrintable(enc, sectionLine);
bytes = enc.GetBytes(qpDecoded);
}
else if (
part.Encoding.Equals("BINARY", StringComparison.InvariantCultureIgnoreCase))
{
bytes = Encoding.ASCII.GetBytes(sectionLine);
}
}
keepGoing = false;
}
return keepGoing;
});
}
else if (result.Status == SendReceiveStatus.Bad)
{
throw new InvalidOperationException();
}
if (bytes != null && part.ContentType.CharSet != null)
{
try
{
string intermediate = enc.GetString(bytes);
return intermediate;
}
catch (ArgumentException) { }
}
return bytes;
}
public object FetchSection(long uid, ImapBodyPart part)
{
return FetchSection(uid, part, false);
}
