/// <summary>
/// Fetches a single nested message from the requested message.
/// </summary>
/// <param name="info">The associated info object, this token can be obtained from the messages body structure.</param>
/// <returns>The requested nested message.</returns>
public Message FetchNestedMessage(MessageInfo info)
{
var text = FetchEntityText(info);
if (string.IsNullOrEmpty(text)) {
return null;
}
var entity = new Entity();
entity.Deserialize(text);
return entity.ToMessage();
}
private static void ProcessChild(MessageInfo message, Part current, string token, int sn, string original)
{
if (current is BodyPart) {
var body = (BodyPart) current;
switch (body.BodyType.ToLower()) {
case "text":
AddView(message, current as BodyPart, token, sn);
break;
case "audio":
case "video":
case "image":
case "application":
AddAttachment(message, current as BodyPart, token, sn);
break;
case "message":
if (body.SubType.ToLower() == "rfc822") {
AddNestedMessage(message, body, token, sn, original);
return;
}
AddView(message, current as BodyPart, token, sn);
break;
default:
AddView(message, current as BodyPart, token, sn);
break;
}
}
var i = 0;
foreach (var child in current.Children) {
i += 1;
var childToken = (token + "." + i).TrimStart('.');
ProcessChild(message, child, childToken, sn, original);
}
}
private static void AddView(MessageInfo message, BodyPart child, string token, int sn)
{
var mediaType = (child.BodyType + "/" + child.SubType).ToLower();
var view = new ViewInfo {
Description = child.BodyDescription.ToUpper() == "NIL" ? string.Empty : child.BodyDescription, Id = child.BodyId.ToUpper() == "NIL" ? string.Empty : child.BodyId,
ContentTransferEncoding = string.IsNullOrEmpty(child.BodyEncoding) ? string.Empty : child.BodyEncoding.ToLower(),
MediaType = mediaType,
Token = token,
SequenceNumber = sn
};
int size;
var success = int.TryParse(child.BodySize, out size);
if (success) {
view.SizeEncoded = Size.FromBytes(size);
} else {
Debug.WriteLine(string.Format("Unable to parse body size. Value is not numeric: '{0}'", child.BodySize));
}
int lines;
success = int.TryParse(child.TextLines, out lines);
if (success) {
view.TextLinesEncoded = lines;
}
var paramDictionary = (ParameterDictionary)view.Parameters;
paramDictionary.AddRange(child.Parameters);
((IList<ViewInfo>) message.Views).Add(view);
}
private static void AddNestedMessage(MessageInfo message, BodyPart current, string token, int sn, string original)
{
var nested = new MessageInfo { SequenceNumber = sn, Token = token, OriginalString = original };
nested.Token = token;
nested.SequenceNumber = sn;
var envelope = original.Substring(current.EnvelopeBounds[0], current.EnvelopeBounds[1]);
var parser = new EnvelopeParser();
nested.Envelope = (Envelope) parser.Parse(envelope, null);
((List<MessageInfo>) message.NestedMessages).Add(nested);
var i = 0;
foreach (var child in current.Children) {
i += 1;
var childToken = (token + "." + i).TrimStart('.');
ProcessChild(nested, child, childToken, sn, original);
}
}
private static void AddAttachment(MessageInfo message, BodyPart child, string token, int sn)
{
var attachment = new AttachmentInfo {
ContentTransferEncoding = string.IsNullOrEmpty(child.BodyEncoding) ? string.Empty : child.BodyEncoding.ToLower(),
MediaType = (child.BodyType + "/" + child.SubType).ToLower(),
Token = token,
SequenceNumber = sn
};
int size;
var success = int.TryParse(child.BodySize, out size);
if (success) {
attachment.SizeEncoded = Size.FromBytes(size);
} else {
Debug.WriteLine(string.Format("Unable to parse body size. Value is not numeric: '{0}'", child.BodySize));
}
if (child.Parameters.ContainsKey("name")) {
attachment.Name = child.Parameters["name"];
}
((ParameterDictionary) attachment.Parameters).AddRange(child.Parameters);
((IList<AttachmentInfo>) message.Attachments).Add(attachment);
}
internal static MessageInfo FromBodyPart(Part part, int sn, string original)
{
var rootToken = string.Empty;
var message = new MessageInfo {SequenceNumber = sn, Token = rootToken, OriginalString = original};
if (part is BodyPart) {
var body = (BodyPart) part;
switch (body.BodyType.ToLower()) {
case "text":
AddView(message, part as BodyPart, rootToken, sn);
break;
case "audio":
case "video":
case "image":
case "application":
AddAttachment(message, part as BodyPart, rootToken, sn);
break;
case "message":
if (body.SubType == "rfc822") {
AddNestedMessage(message, part as BodyPart, rootToken, sn, original);
} else {
AddView(message, part as BodyPart, rootToken, sn);
}
break;
default:
AddView(message, part as BodyPart, string.Empty, sn);
break;
}
}
var i = 0;
foreach (var child in part.Children) {
i += 1;
ProcessChild(message, child, i.ToString(), sn, original);
}
return message;
}
