/// <summary>
/// Loads the text.
/// </summary>
/// <param name="header">The header.</param>
/// <param name="body">The body.</param>
/// <param name="contentType">Type of the content.</param>
/// <returns></returns>
private string LoadText(IReadOnlyCollection <string> header, List <string> body, string contentType)
{
var regexEncoding = new Regex(@"(?<=Content-Transfer-Encoding: )(\S*?)(?=$)");
var regexType = new Regex(@"(?<=Content-Type: )(.*?)(?=(;))");
if (string.Join(" ", header).Contains("Content-Transfer-Encoding: "))
{
var type = regexType.Match((from line in header
where line.StartsWith($"Content-Type: {contentType}")
select line).FirstOrDefault() ?? "")
.Value;
if (type == "")
{
return($"Message Has No {contentType} Attached");
}
var commonEncoding = regexEncoding.Match((from line in header
where line.StartsWith("Content-Transfer-Encoding: ")
select line).FirstOrDefault() ?? "")
.Value;
var res = string.Join("\r\n", body);
return(MessageDecoder.DecodeBody(res, commonEncoding, "utf-8"));
}
var matching = (from line in body
where line.StartsWith($"Content-Type: {contentType}")
select line).FirstOrDefault();
if (matching == default(string))
{
return($"Message Has No {contentType} Attached");
}
var startOfHtml = body.IndexOf(matching) + 2;
var boundary = (from line in body.Skip(startOfHtml)
where line.StartsWith("--") && line[2] != '>'
select line).FirstOrDefault();
int endOfHtml = body.IndexOf(boundary, startOfHtml);
var encoding = regexEncoding.Match(body[startOfHtml - 1]).Value;
var result = string.Join("\r\n", body.GetRange(startOfHtml, endOfHtml - startOfHtml));
string decodedBody = MessageDecoder.DecodeBody(result, encoding, "utf-8");
return(decodedBody);
}
/// <summary>
/// Parses the body header.
/// </summary>
/// <param name="uid">The uid.</param>
/// <param name="response">The response.</param>
/// <param name="subject">The subject.</param>
/// <returns></returns>
private MessageModel ParseBodyHeader(string uid, List <string> response, string subject)
{
var regex = new Regex(@"\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*");
var email = new MessageModel(uid);
var from = regex.Match((from line in response
where line.StartsWith("From: ")
select line)
.FirstOrDefault() ?? "")
.Value;
var toMatches = regex.Matches((from line in response
where line.StartsWith("To: ")
select line)
.FirstOrDefault() ?? "");
var to = (from Match item in toMatches
select item.Value)
.ToList();
var date = (from line in response
where line.StartsWith("Date: ")
select line.Replace("Date: ", string.Empty))
.FirstOrDefault();
DateTime parsedDate = default(DateTime);
if (date != null)
{
date = date.Contains("(")
? date.Substring(0, date.Length - 5)
: date;
parsedDate = Convert.ToDateTime(date);
}
var regexSubj = new Regex(@"(?<=Subject: )([\s\S]*?)(?=$)");
string subj = regexSubj.Match(subject).Value;
email.Subject = MessageDecoder.DecodeEncodedLine(subj);
email.From = from;
email.To = to;
email.Date = parsedDate;
return(email);
}
