/// <summary>
/// Parses IMAP FETCH BODYSTRUCTURE from reader.
/// </summary>
/// <param name="r">Fetch reader.</param>
/// <returns>Returns parsed bodystructure.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>r</b> is null reference.</exception>
public static IMAP_t_Fetch_r_i_BodyStructure Parse(StringReader r)
{
if(r == null){
throw new ArgumentNullException("r");
}
IMAP_t_Fetch_r_i_BodyStructure retVal = new IMAP_t_Fetch_r_i_BodyStructure();
r.ReadToFirstChar();
// We have multipart message
if(r.StartsWith("(")){
retVal.m_pMessage = IMAP_t_Fetch_r_i_BodyStructure_e_Multipart.Parse(r);
}
// We have single-part message.
else{
retVal.m_pMessage = IMAP_t_Fetch_r_i_BodyStructure_e_SinglePart.Parse(r);
}
return retVal;
}
/// <summary>
/// Parses IMAP FETCH BODYSTRUCTURE from reader.
/// </summary>
/// <param name="r">Fetch reader.</param>
/// <returns>Returns parsed bodystructure.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>r</b> is null reference.</exception>
public static IMAP_t_Fetch_r_i_BodyStructure Parse(StringReader r)
{
if (r == null)
{
throw new ArgumentNullException("r");
}
IMAP_t_Fetch_r_i_BodyStructure retVal = new IMAP_t_Fetch_r_i_BodyStructure();
r.ReadToFirstChar();
// We have multipart message
if (r.StartsWith("("))
{
retVal.m_pMessage = IMAP_t_Fetch_r_i_BodyStructure_e_Multipart.Parse(r);
}
// We have single-part message.
else
{
retVal.m_pMessage = IMAP_t_Fetch_r_i_BodyStructure_e_SinglePart.Parse(r);
}
return(retVal);
}
/// <summary>
/// Starts parsing fetch data-items,
/// </summary>
/// <param name="imap">IMAP client.</param>
/// <param name="r">Fetch line reader.</param>
/// <param name="callback">Callback to be called when parsing completes.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>imap</b>,<b>r</b> or <b>callback</b> is null reference.</exception>
private void ParseDataItems(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");
}
/* RFC 3501 7.4.2. FETCH Response.
* Example: S: * 23 FETCH (FLAGS (\Seen) RFC822.SIZE 44827)
*/
while (true)
{
r.ReadToFirstChar();
#region BODY[]
if (r.StartsWith("BODY[", false))
{
/* RFC 3501 7.4.2. FETCH Response.
* BODY[<section>]<<origin octet>>
* A string expressing the body contents of the specified section.
* The string SHOULD be interpreted by the client according to the
* content transfer encoding, body type, and subtype.
*
* If the origin octet is specified, this string is a substring of
* the entire body contents, starting at that origin octet. This
* means that BODY[]<0> MAY be truncated, but BODY[] is NEVER
* truncated.
*
* Note: The origin octet facility MUST NOT be used by a server
* in a FETCH response unless the client specifically requested
* it by means of a FETCH of a BODY[<section>]<<partial>> data
* item.
*
* 8-bit textual data is permitted if a [CHARSET] identifier is
* part of the body parameter parenthesized list for this section.
* Note that headers (part specifiers HEADER or MIME, or the
* header portion of a MESSAGE/RFC822 part), MUST be 7-bit; 8-bit
* characters are not permitted in headers. Note also that the
* [RFC-2822] delimiting blank line between the header and the
* body is not affected by header line subsetting; the blank line
* is always included as part of header data, except in the case
* of a message which has no body and no blank line.
*
* Non-textual data such as binary data MUST be transfer encoded
* into a textual form, such as BASE64, prior to being sent to the
* client. To derive the original binary data, the client MUST
* decode the transfer encoded string.
*/
// Eat BODY word.
r.ReadWord();
// Read body-section.
string section = r.ReadParenthesized();
// Read origin if any.
int offset = -1;
if (r.StartsWith("<"))
{
offset = Convert.ToInt32(r.ReadParenthesized().Split(' ')[0]);
}
IMAP_t_Fetch_r_i_Body dataItem = new IMAP_t_Fetch_r_i_Body(section, offset, new MemoryStreamEx(32000));
m_pDataItems.Add(dataItem);
// Raise event, allow user to specify store stream.
IMAP_Client_e_FetchGetStoreStream eArgs = new IMAP_Client_e_FetchGetStoreStream(this, dataItem);
imap.OnFetchGetStoreStream(eArgs);
// User specified own stream, use it.
if (eArgs.Stream != null)
{
dataItem.Stream.Dispose();
dataItem.SetStream(eArgs.Stream);
}
// Read data will complete async and will continue data-items parsing, exit this method.
if (ReadData(imap, r, callback, dataItem.Stream))
{
return;
}
// Continue processing.
//else{
}
#endregion
#region BODY
else if (r.StartsWith("BODY ", false))
{
// BODYSTRUCTURE can contain string literals, we just try to parse it.
// If parse fails, just get string literal and try again as long as all BODYSTRUCTURE data has read.
string bodyStructure = null;
while (true)
{
// Create temporary reader(we don't want to read partial BODYSTRUCTURE data from reader).
StringReader tmpReader = new StringReader(r.SourceString);
// Eat BODYSTRUCTURE word.
tmpReader.ReadWord();
tmpReader.ReadToFirstChar();
try{
bodyStructure = tmpReader.ReadParenthesized();
// We got full BODYSTRUCTURE, so use tmp reader as reader.
r = tmpReader;
break;
}
catch {
// Read completed async, it will continue parsing.
if (ReadStringLiteral(imap, r, callback))
{
return;
}
}
}
m_pDataItems.Add(IMAP_t_Fetch_r_i_BodyStructure.Parse(new StringReader(bodyStructure)));
}
#endregion
#region BODYSTRUCTURE
else if (r.StartsWith("BODYSTRUCTURE", false))
{
// BODYSTRUCTURE can contain string literals, we just try to parse it.
// If parse fails, just get string literal and try again as long as all BODYSTRUCTURE data has read.
string bodyStructure = null;
while (true)
{
// Create temporary reader(we don't want to read partial BODYSTRUCTURE data from reader).
StringReader tmpReader = new StringReader(r.SourceString);
// Eat BODYSTRUCTURE word.
tmpReader.ReadWord();
tmpReader.ReadToFirstChar();
try{
bodyStructure = tmpReader.ReadParenthesized();
// We got full BODYSTRUCTURE, so use tmp reader as reader.
r = tmpReader;
break;
}
catch {
// Read completed async, it will continue parsing.
if (ReadStringLiteral(imap, r, callback))
{
return;
}
}
}
m_pDataItems.Add(IMAP_t_Fetch_r_i_BodyStructure.Parse(new StringReader(bodyStructure)));
}
#endregion
#region ENVELOPE
else if (r.StartsWith("ENVELOPE", false))
{
// Envelope can contain string literals, we just try to parse it.
// If parse fails, just get string literal and try again as long as all ENVELOPE data has read.
string envelope = null;
while (true)
{
// Create temporary reader(we don't want to read partial ENVELOPE data from reader).
StringReader tmpReader = new StringReader(r.SourceString);
// Eat ENVELOPE word.
tmpReader.ReadWord();
tmpReader.ReadToFirstChar();
try{
envelope = tmpReader.ReadParenthesized();
// We got full ENVELOPE, so use tmp reader as reader.
r = tmpReader;
break;
}
catch {
// Read completed async, it will continue parsing.
if (ReadStringLiteral(imap, r, callback))
{
return;
}
}
}
m_pDataItems.Add(IMAP_t_Fetch_r_i_Envelope.Parse(new StringReader(envelope)));
}
#endregion
#region FLAGS
else if (r.StartsWith("FLAGS", false))
{
/* RFC 3501 7.4.2. FETCH Response.
* FLAGS
* A parenthesized list of flags that are set for this message.
*/
// Eat FLAGS word.
r.ReadWord();
m_pDataItems.Add(new IMAP_t_Fetch_r_i_Flags(IMAP_t_MsgFlags.Parse(r.ReadParenthesized())));
}
#endregion
#region INTERNALDATE
else if (r.StartsWith("INTERNALDATE", false))
{
/* RFC 3501 7.4.2. FETCH Response.
* INTERNALDATE
* A string representing the internal date of the message.
*/
// Eat INTERNALDATE word.
r.ReadWord();
m_pDataItems.Add(new IMAP_t_Fetch_r_i_InternalDate(IMAP_Utils.ParseDate(r.ReadWord())));
}
#endregion
#region RFC822
else if (r.StartsWith("RFC822 ", false))
{
/* RFC 3501 7.4.2. FETCH Response.
* RFC822
* Equivalent to BODY[].
*/
// Eat RFC822 word.
r.ReadWord();
r.ReadToFirstChar();
IMAP_t_Fetch_r_i_Rfc822 dataItem = new IMAP_t_Fetch_r_i_Rfc822(new MemoryStreamEx(32000));
m_pDataItems.Add(dataItem);
// Raise event, allow user to specify store stream.
IMAP_Client_e_FetchGetStoreStream eArgs = new IMAP_Client_e_FetchGetStoreStream(this, dataItem);
imap.OnFetchGetStoreStream(eArgs);
// User specified own stream, use it.
if (eArgs.Stream != null)
{
dataItem.Stream.Dispose();
dataItem.SetStream(eArgs.Stream);
}
// Read data will complete async and will continue data-items parsing, exit this method.
if (ReadData(imap, r, callback, dataItem.Stream))
{
return;
}
// Continue processing.
//else{
}
#endregion
#region RFC822.HEADER
else if (r.StartsWith("RFC822.HEADER", false))
{
/* RFC 3501 7.4.2. FETCH Response.
* RFC822.HEADER
* Equivalent to BODY[HEADER]. Note that this did not result in
* \Seen being set, because RFC822.HEADER response data occurs as
* a result of a FETCH of RFC822.HEADER. BODY[HEADER] response
* data occurs as a result of a FETCH of BODY[HEADER] (which sets
* \Seen) or BODY.PEEK[HEADER] (which does not set \Seen).
*/
// Eat RFC822.HEADER word.
r.ReadWord();
r.ReadToFirstChar();
IMAP_t_Fetch_r_i_Rfc822Header dataItem = new IMAP_t_Fetch_r_i_Rfc822Header(new MemoryStreamEx(32000));
m_pDataItems.Add(dataItem);
// Raise event, allow user to specify store stream.
IMAP_Client_e_FetchGetStoreStream eArgs = new IMAP_Client_e_FetchGetStoreStream(this, dataItem);
imap.OnFetchGetStoreStream(eArgs);
// User specified own stream, use it.
if (eArgs.Stream != null)
{
dataItem.Stream.Dispose();
dataItem.SetStream(eArgs.Stream);
}
// Read data will complete async and will continue data-items parsing, exit this method.
if (ReadData(imap, r, callback, dataItem.Stream))
{
return;
}
// Continue processing.
//else{
}
#endregion
#region RFC822.SIZE
else if (r.StartsWith("RFC822.SIZE", false))
{
/* RFC 3501 7.4.2. FETCH Response.
* RFC822.SIZE
* A number expressing the [RFC-2822] size of the message.
*/
// Eat RFC822.SIZE word.
r.ReadWord();
m_pDataItems.Add(new IMAP_t_Fetch_r_i_Rfc822Size(Convert.ToInt32(r.ReadWord())));
}
#endregion
#region RFC822.TEXT
else if (r.StartsWith("RFC822.TEXT", false))
{
/* RFC 3501 7.4.2. FETCH Response.
* RFC822.TEXT
* Equivalent to BODY[TEXT].
*/
// Eat RFC822.TEXT word.
r.ReadWord();
r.ReadToFirstChar();
IMAP_t_Fetch_r_i_Rfc822Text dataItem = new IMAP_t_Fetch_r_i_Rfc822Text(new MemoryStreamEx(32000));
m_pDataItems.Add(dataItem);
// Raise event, allow user to specify store stream.
IMAP_Client_e_FetchGetStoreStream eArgs = new IMAP_Client_e_FetchGetStoreStream(this, dataItem);
imap.OnFetchGetStoreStream(eArgs);
// User specified own stream, use it.
if (eArgs.Stream != null)
{
dataItem.Stream.Dispose();
dataItem.SetStream(eArgs.Stream);
}
// Read data will complete async and will continue data-items parsing, exit this method.
if (ReadData(imap, r, callback, dataItem.Stream))
{
return;
}
// Continue processing.
//else{
}
#endregion
#region UID
else if (r.StartsWith("UID", false))
{
/* RFC 3501 7.4.2. FETCH Response.
* UID
* A number expressing the unique identifier of the message.
*/
// Eat UID word.
r.ReadWord();
m_pDataItems.Add(new IMAP_t_Fetch_r_i_Uid(Convert.ToInt64(r.ReadWord())));
}
#endregion
#region X-GM-MSGID
else if (r.StartsWith("X-GM-MSGID", false))
{
/* http://code.google.com/intl/et/apis/gmail/imap X-GM-MSGID.
*
*/
// Eat X-GM-MSGID word.
r.ReadWord();
m_pDataItems.Add(new IMAP_t_Fetch_r_i_X_GM_MSGID(Convert.ToUInt64(r.ReadWord())));
}
#endregion
#region X-GM-THRID
else if (r.StartsWith("X-GM-THRID", false))
{
/* http://code.google.com/intl/et/apis/gmail/imap X-GM-THRID.
*
*/
// Eat X-GM-THRID word.
r.ReadWord();
m_pDataItems.Add(new IMAP_t_Fetch_r_i_X_GM_THRID(Convert.ToUInt64(r.ReadWord())));
}
#endregion
#region ) - fetch closing.
else if (r.StartsWith(")", false))
{
break;
}
#endregion
else
{
throw new ParseException("Not supported FETCH data-item '" + r.ReadToEnd() + "'.");
}
}
callback(this, new EventArgs <Exception>(null));
}
