/// <summary>
/// Get the header type for the current line.
/// </summary>
/// <param name="line">The current header line.</param>
/// <returns>The current message header type match.</returns>
private Nequeo.Net.Mail.MesssageHeaderType GetHeaderType(string line)
{
// Initialise the message header to
// an unknown header type.
Nequeo.Net.Mail.MesssageHeaderType lineType = Nequeo.Net.Mail.MesssageHeaderType.UnKnown;
// For each message header string.
for (int i = 0; i < EmailMessageParse.HeaderType.Length; i++)
{
// Get the current header string.
string match = EmailMessageParse.HeaderType[i];
// Find a header match in the current line.
if (Regex.Match(line, "^" + match + ":" + ".*$").Success)
{
// A header match has been found for
// the header string, return the header type.
lineType = (Nequeo.Net.Mail.MesssageHeaderType)i;
break;
}
else
if (line.Length == 0)
{
// No match has been found, the
// end of the header types has
// been reached.
lineType = Nequeo.Net.Mail.MesssageHeaderType.EndOfHeader;
break;
}
}
// Return the matching header type,
return(lineType);
}
/// <summary>
/// Parse each header type for each line in the email message.
/// </summary>
/// <param name="lines">The array of lines in the email message.</param>
/// <returns>The start of the message body.</returns>
private long ParseHeader(string[] lines)
{
// Get the total number of lines
// and set the body start count to
// zero.
int numberOfLines = lines.Length;
long bodyStart = 0;
// For each line in the email message
// parse all headers required.
for (int i = 0; i < numberOfLines; i++)
{
// Get the current email line.
string currentLine = lines[i].Replace("\n", "");
// Get the current line header type.
Nequeo.Net.Mail.MesssageHeaderType lineType = GetHeaderType(currentLine);
// Get each haeder type.
switch (lineType)
{
case Nequeo.Net.Mail.MesssageHeaderType.From:
// From email message.
_from = EmailMessageParse.From(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.Subject:
// Subject of the message.
_subject = EmailMessageParse.Subject(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.To:
// To email message.
_to = EmailMessageParse.To(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.ReplyTo:
// Reply to email message.
_replyTo = EmailMessageParse.ReplyTo(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.Date:
// Date received message.
_date = EmailMessageParse.Date(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.Organization:
// The orginization that sent the message.
_organization = EmailMessageParse.Organization(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.ReturnPath:
// The email address return path.
_returnPath = EmailMessageParse.ReturnPath(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.Received:
// The computers that sent and recevied the message.
_received += EmailMessageParse.Received(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.Cc:
// The carbon copy email address.
_cc = EmailMessageParse.Cc(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.Bcc:
// The blind carbon copy email address.
_bcc = EmailMessageParse.Bcc(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.Priority:
// The email message priority.
_priority = EmailMessageParse.Priority(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.Importance:
// The importance of the message.
_importance = EmailMessageParse.Importance(currentLine);
break;
case Nequeo.Net.Mail.MesssageHeaderType.ContentType:
// The content type of the message
// that has been specified (text, html etc..).
_contentType = EmailMessageParse.ContentType(currentLine);
// Is multi part, that is are
// attachments included.
_isMultipart = EmailMessageParse.IsMultipart(_contentType);
// If multipart.
if (_isMultipart)
{
// Boundary has been found
// for the attachments.
if (_contentType.Substring(_contentType.Length - 1, 1).Equals(";"))
{
// Increament the line index by one
// move to the next line.
++i;
// Get the boundary data from the message.
_multipartBoundary = EmailMessageParse.MultipartBoundary(lines[i].Replace("\n", ""));
}
else
{
// Boundary definition is on same
// line as Content-Type.
_multipartBoundary = EmailMessageParse.MultipartBoundary(_contentType);
}
}
break;
case Nequeo.Net.Mail.MesssageHeaderType.EndOfHeader:
// The end of all message headers has been
// found so the next data is the body of the
// message increment the body start index.
bodyStart = i + 1;
break;
}
// If the body index is greater than
// zero then end of headers has been
// for and the body of the message
// has started, break out of the loop.
if (bodyStart > 0)
{
break;
}
}
// Return the start of the body.
return(bodyStart);
}
