public string ParseSubject(string header)
{
if (header == null)
{
throw new ArgumentNullException("header");
}
StringBuilder builder = new StringBuilder("");
Match match = regSubject.Match(header);
if (match.Success && (match.Groups.Count > 0))
{
MatchCollection matchs = regSubjectItem.Matches(match.Groups[1].Value);
if (matchs.Count == 0)
{
builder = new StringBuilder(match.Groups[1].Value);
}
else
{
foreach (Match match2 in matchs)
{
builder.Append(MailMessageRFCDecoder.ParseBase64Item(match2.Value));
}
}
}
return(builder.ToString());
}
public string DecodeParameterValue(string source)
{
bool flag = false;
bool flag2 = true;
StringBuilder builder = new StringBuilder();
foreach (string str in source.Replace("\\\"", "").Split(new char[] { ' ' }))
{
bool flag3 = flag;
string str2 = MailMessageRFCDecoder.ParseBase64Item(str);
if (str2 != "")
{
flag = true;
}
else
{
flag = false;
str2 = str;
}
if ((!flag || !flag3) && !flag2)
{
builder.Append(' ');
}
flag2 = false;
builder.Append(str2);
}
return(builder.ToString());
}
public EmailAddress ParseEmail(string text)
{
string str;
EmailAddress address;
if (text == null)
{
throw new ArgumentNullException("text");
}
string input = "";
Match match = regAddressDifDisplayName.Match(text);
if (match.Success && (match.Groups.Count > 1))
{
input = match.Groups[1].Value;
str = match.Groups[2].Value;
}
else
{
match = regAddressDisplayName.Match(text);
if (match.Success && (match.Groups.Count > 1))
{
input = match.Groups[1].Value;
str = match.Groups[2].Value;
}
else
{
match = regAddressEasy.Match(text);
if (match.Success && (match.Groups.Count > 1))
{
str = match.Groups[1].Value;
}
else
{
return(null);
}
}
}
if (regSubjectItem.IsMatch(input))
{
input = MailMessageRFCDecoder.ParseBase64Item(input);
}
try
{
address = new EmailAddress(str, input.Trim());
}
catch
{
return(null);
}
return(address);
}
public IList <string> ParseKeywords(string text)
{
if (text == null)
{
throw new ArgumentNullException("text");
}
List <string> list = new List <string>();
Match match = regKeywords.Match(text);
if (match.Success && (match.Groups.Count > 1))
{
foreach (Match match2 in regKeyword.Matches(match.Groups[1].Value))
{
list.Add(regSubjectItem.IsMatch(match2.Groups[1].Value) ? MailMessageRFCDecoder.ParseBase64Item(match2.Groups[1].Value) : match2.Groups[1].Value);
}
}
return(list);
}
public string ParseComments(string text)
{
if (text == null)
{
throw new ArgumentNullException("text");
}
Match match = regComments.Match(text);
if (!match.Success || (match.Groups.Count <= 1))
{
return(null);
}
if (!regSubjectItem.IsMatch(match.Groups[1].Value))
{
return(match.Groups[1].Value);
}
return(MailMessageRFCDecoder.ParseBase64Item(match.Groups[1].Value));
}
