/// <summary>
/// Reads next continuing FETCH line and stores to fetch reader 'r'.
/// </summary>
/// <param name="imap">IMAP client.</param>
/// <param name="r">String reader.</param>
/// <param name="callback">Fetch completion callback.</param>
/// <returns>Returns true if completed asynchronously or false if completed synchronously.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>imap</b>,<b>r</b> or <b>callback</b> is null reference.</exception>
private bool ReadNextFetchLine(IMAP_Client imap, StringReader r, EventHandler <EventArgs <Exception> > callback)
{
if (imap == null)
{
throw new ArgumentNullException("imap");
}
if (r == null)
{
throw new ArgumentNullException("r");
}
if (callback == null)
{
throw new ArgumentNullException("callback");
}
SmartStream.ReadLineAsyncOP readLineOP = new SmartStream.ReadLineAsyncOP(new byte[64000], SizeExceededAction.JunkAndThrowException);
readLineOP.Completed += delegate(object sender, EventArgs <SmartStream.ReadLineAsyncOP> e){
try{
// Read line failed.
if (readLineOP.Error != null)
{
callback(this, new EventArgs <Exception>(readLineOP.Error));
}
else
{
// Log.
imap.LogAddRead(readLineOP.BytesInBuffer, readLineOP.LineUtf8);
// Append fetch line to fetch reader.
r.AppendString(readLineOP.LineUtf8);
ParseDataItems(imap, r, callback);
}
}
catch (Exception x) {
callback(this, new EventArgs <Exception>(x));
}
finally{
readLineOP.Dispose();
}
};
// Read line completed synchronously.
if (imap.TcpStream.ReadLine(readLineOP, true))
{
try{
// Read line failed.
if (readLineOP.Error != null)
{
callback(this, new EventArgs <Exception>(readLineOP.Error));
return(true);
}
else
{
// Log.
imap.LogAddRead(readLineOP.BytesInBuffer, readLineOP.LineUtf8);
// Append fetch line to fetch reader.
r.AppendString(readLineOP.LineUtf8);
return(false);
}
}
finally{
readLineOP.Dispose();
}
}
return(true);
}
/// <summary>
/// Reads string-literal(stores it to reader 'r') and continuing fetch line.
/// </summary>
/// <param name="imap">IMAP client.</param>
/// <param name="r">String reader.</param>
/// <param name="callback">Fetch completion callback.</param>
/// <returns>Returns true if completed asynchronously or false if completed synchronously.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>imap</b>,<b>r</b> or <b>callback</b> is null reference.</exception>
private bool ReadStringLiteral(IMAP_Client imap, StringReader r, EventHandler <EventArgs <Exception> > callback)
{
if (imap == null)
{
throw new ArgumentNullException("imap");
}
if (r == null)
{
throw new ArgumentNullException("r");
}
if (callback == null)
{
throw new ArgumentNullException("callback");
}
if (r.SourceString.EndsWith("}") && r.SourceString.IndexOf("{") > -1)
{
MemoryStream stream = new MemoryStream();
string size = r.SourceString.Substring(r.SourceString.LastIndexOf("{") + 1, r.SourceString.Length - r.SourceString.LastIndexOf("{") - 2);
// Remove {n} from string.
r.RemoveFromEnd(r.SourceString.Length - r.SourceString.LastIndexOf('{'));
IMAP_Client.ReadStringLiteralAsyncOP op = new IMAP_Client.ReadStringLiteralAsyncOP(stream, Convert.ToInt32(size));
op.CompletedAsync += delegate(object sender, EventArgs <IMAP_Client.ReadStringLiteralAsyncOP> e){
try{
// Read string literal failed.
if (op.Error != null)
{
callback(this, new EventArgs <Exception>(op.Error));
}
else
{
// Append string-literal to fetch reader.
r.AppendString(TextUtils.QuoteString(Encoding.UTF8.GetString(stream.ToArray())));
// Read next fetch line completed synchronously.
if (!ReadNextFetchLine(imap, r, callback))
{
ParseDataItems(imap, r, callback);
}
}
}
catch (Exception x) {
callback(this, new EventArgs <Exception>(x));
}
finally{
op.Dispose();
}
};
// Read string literal completed sync.
if (!imap.ReadStringLiteralAsync(op))
{
try{
// Read string literal failed.
if (op.Error != null)
{
callback(this, new EventArgs <Exception>(op.Error));
return(true);
}
else
{
// Append string-literal to fetch reader.
r.AppendString(TextUtils.QuoteString(Encoding.UTF8.GetString(stream.ToArray())));
return(ReadNextFetchLine(imap, r, callback));
}
}
finally{
op.Dispose();
}
}
// Read string literal completed async.
else
{
return(true);
}
}
else
{
throw new ParseException("No string-literal available '" + r.SourceString + "'.");
}
}
