private string CreateEntity(ref Stream dataStream, ref IMultipartEntity parent, out IEntity entity)
{
entity = null;
IList <RFC822.Field> fields;
int cause = ParseFields(ref dataStream, out fields);
if (cause > 0)
{
foreach (RFC822.Field contentField in fields)
{
if (contentField is ContentTypeField)
{
ContentTypeField contentTypeField = contentField as ContentTypeField;
if (m_FieldParser.CompositeType.IsMatch(contentTypeField.Type))
{
MultipartEntity mEntity = new MultipartEntity();
mEntity.Fields = fields;
entity = mEntity;
entity.Parent = parent;
parent.BodyParts.Add(entity);
if (Regex.IsMatch(contentTypeField.Type, "(?i)message") &&
Regex.IsMatch(contentTypeField.SubType, "(?i)rfc822"))
{
Message message = new Message();
IList <RFC822.Field> messageFields;
cause = ParseFields(ref dataStream, out messageFields);
message.Fields = messageFields;
mEntity.BodyParts.Add(message);
message.Parent = mEntity;
if (cause > 0)
{
return(ParseMessage(ref dataStream, ref message, messageFields));
}
break;
}
else
{
mEntity.Delimiter = ReadDelimiter(ref contentTypeField);
return(parent.Delimiter);
}
}
else if (m_FieldParser.DescriteType.IsMatch(contentTypeField.Type))
{
entity = new Entity();
entity.Fields = fields;
entity.Parent = parent;
parent.BodyParts.Add(entity);
return(parent.Delimiter);
}
}
}
}
return(string.Empty);
}
private string ReadDelimiter(ref ContentTypeField contentTypeField)
{
if (contentTypeField.Parameters["boundary"] != null)
{
return(contentTypeField.Parameters["boundary"]);
}
else
{
return(string.Empty);
}
}
private void LoadAttachments(IEntity parent)
{
if (parent is MultipartEntity)
{
MultipartEntity mpe = parent as MultipartEntity;
foreach (Entity entity in mpe.BodyParts)
{
if (entity is MultipartEntity && !(entity is Message))
{
LoadAttachments(entity);
}
else if (!(entity is MultipartEntity) && !(entity is Message))
{
ContentDispositionField dispositionField = null;
ContentTypeField contentTypeField = null;
foreach (RFC822.Field field in entity.Fields)
{
if (field is RFC2183.ContentDispositionField)
{
dispositionField = field as ContentDispositionField;
}
if (field is ContentTypeField)
{
contentTypeField = field as ContentTypeField;
}
}
if (dispositionField != null && contentTypeField != null)
{
IAttachment attachment = new Attachment();
attachment.Disposition = dispositionField.Disposition;
attachment.Name = dispositionField.Parameters["filename"];
attachment.Data = entity.Body;
attachment.Type = contentTypeField.Type;
attachment.SubType = contentTypeField.SubType;
m_Attachments.Add(attachment);
}
}
}
}
}
private void LoadBody(Entity parent)
{
if (parent is MultipartEntity)
{
MultipartEntity mpe = parent as MultipartEntity;
foreach (Entity child in mpe.BodyParts)
{
if (child != parent && !(child is Message))
{
LoadBody(child);
}
}
}
ContentTypeField contentTypeField = null;
ContentDispositionField contentDispositionField = null;
foreach (RFC822.Field field in parent.Fields)
{
if (field is ContentTypeField)
{
ContentTypeField contentField = field as ContentTypeField;
if (contentField.Type.ToLower().Equals("text"))
{
contentTypeField = contentField;
}
}
if (field is ContentDispositionField)
{
contentDispositionField = field as ContentDispositionField;
}
}
if (contentTypeField != null &&
(contentDispositionField == null ||
contentDispositionField.Disposition.ToLower().Equals("inline")))
{
string text = ToString(parent.Body);
m_Body.Add(contentTypeField.Type + "/" + contentTypeField.SubType,
text);
}
}
public override void Parse(ref IList <RFC822.Field> fields, ref string fieldString)
{
if (!IsPatternCompiled())
{
CompilePattern();
}
if (fields.Count == 0)
{
base.Parse(ref fields, ref fieldString);
}
MatchCollection matches = m_Content.Matches(fieldString);
foreach (Match match in matches)
{
ContentTypeField tmpContent = new ContentTypeField();
tmpContent.Name = "Content-Type";
MatchCollection parameters;
string key, val;
Match tmpMatch = Regex.Match(match.Value, ":.+");
tmpContent.Body = tmpMatch.Value.TrimStart(new char[] { ':' });
tmpMatch = m_Type.Match(match.Value);
tmpContent.Type = tmpMatch.Value;
tmpMatch = m_SubType.Match(match.Value);
tmpContent.SubType = tmpMatch.Value;
parameters = m_Parameters.Matches(match.Value);
foreach (Match m in parameters)
{
tmpMatch = Regex.Match(m.Value, m_TokenPattern + "=");
key = tmpMatch.Value.TrimEnd(new char[] { '=' });
tmpMatch = Regex.Match(m.Value, "(?<==)" + m_ValuePattern);
val = tmpMatch.Value.Trim(new char[] { '\\', '"' });
tmpContent.Parameters.Add(key, val);
}
fields.Add(tmpContent);
}
}
private string ParseMessage(ref Stream dataStream, ref Message message, IList <RFC822.Field> fields)
{
foreach (RFC822.Field contentField in fields)
{
if (contentField is ContentTypeField)
{
ContentTypeField contentTypeField = contentField as ContentTypeField;
if (m_FieldParser.CompositeType.IsMatch(contentTypeField.Type))
{//是复合邮件
IMultipartEntity e = message as IMultipartEntity;
e.Delimiter = ReadDelimiter(ref contentTypeField);
return(ReadCompositeEntity(ref dataStream, ref e));
}
else if (m_FieldParser.DescriteType.IsMatch(contentTypeField.Type))
{
IEntity e = message as IEntity;
message.BodyParts.Add(e);// This is a message witch body lies within its own entity
return(ReadDiscreteEntity(ref dataStream, ref e));
}
}
}
return(string.Empty);
}
