public static void ParseContentType(ContentType contentType, String line)
{
Match m = null;
foreach (Regex rx in MailParser.RegexList.ContentTypeName)
{
m = rx.Match(line);
if (String.IsNullOrEmpty(m.Groups["Value"].Value) == false)
{
contentType.Name = m.Groups["Value"].Value;
break;
}
}
if (String.IsNullOrEmpty(contentType.Name) == true)
{
contentType.Name = MailParser.ParseHeaderParameterValue("name", line);
}
foreach (Regex rx in MailParser.RegexList.ContentTypeBoundary)
{
m = rx.Match(line);
if (String.IsNullOrEmpty(m.Groups["Value"].Value) == false)
{
contentType.Boundary = m.Groups["Value"].Value;
break;
}
}
if (String.IsNullOrEmpty(contentType.Boundary) == true)
{
contentType.Boundary = MailParser.ParseHeaderParameterValue("boundary", line);
}
}
public static String DecodeFromMailHeaderLine(String line)
{
Regex rg = RegexList.DecodeByRfc2047;
MatchCollection mc = null;
Match m = null;
Byte[] bb = null;
Encoding en = null;
Int32 StartIndex = 0;
StringBuilder sb = new StringBuilder();
if (String.IsNullOrEmpty(line) == true)
{
return("");
}
m = RegexList.DecodeByRfc2231.Match(line);
mc = rg.Matches(line);
if (m.Success == true && mc.Count == 0)
{
en = MailParser.GetEncoding(m.Groups["Encoding"].Value);
sb.Append(MailParser.DecodeFromMailHeaderLineByRfc2231(m.Groups["Value"].Value, en));
}
else
{
for (int i = 0; i < mc.Count; i++)
{
m = mc[i];
sb.Append(line.Substring(StartIndex, m.Index - StartIndex));
StartIndex = m.Index + m.Length;
if (m.Groups.Count < 3)
{
throw new InvalidDataException();
}
if (m.Groups["BorQ"].Value.ToUpper() == "B")
{
bb = Convert.FromBase64String(m.Groups["Value"].Value);
}
else if (m.Groups["BorQ"].Value.ToUpper() == "Q")
{
bb = MailParser.FromQuotedPrintableTextOnHeader(m.Groups["Value"].Value);
}
else
{
throw new InvalidDataException();
}
en = MailParser.GetEncoding(m.Groups["Encoding"].Value);
sb.Append(en.GetString(bb));
}
sb.Append(line.Substring(StartIndex, line.Length - StartIndex));
}
return(sb.ToString());
}
public static String EncodeToMailBody(String text, TransferEncoding encodeType, Encoding encoding)
{
Byte[] bb = encoding.GetBytes(text);
if (encodeType == TransferEncoding.Base64)
{
return(Convert.ToBase64String(bb));
}
else if (encodeType == TransferEncoding.QuotedPrintable)
{
return(MailParser.ToQuotedPrintable(encoding.GetString(bb)));
}
return(encoding.GetString(bb));
}
public static void ParseContentDisposition(ContentDisposition contentDisposition, String line)
{
Match m = null;
foreach (Regex rx in MailParser.RegexList.ContentDispositionFileName)
{
m = rx.Match(line);
if (String.IsNullOrEmpty(m.Groups["Value"].Value) == false)
{
contentDisposition.FileName = m.Groups["Value"].Value;
return;
}
}
contentDisposition.FileName = MailParser.ParseHeaderParameterValue("filename", line);
}
public static String DecodeFromMailBody(String text, TransferEncoding encodeType, Encoding encoding)
{
Byte[] b = null;
if (encodeType == TransferEncoding.Base64)
{
b = Convert.FromBase64String(text);
}
else if (encodeType == TransferEncoding.QuotedPrintable)
{
b = MailParser.FromQuotedPrintableText(text);
}
else
{
b = encoding.GetBytes(text);
}
return(encoding.GetString(b));
}
public static String ToMailAddressText(Encoding encoding, TransferEncoding transferEncoding
, String mailAddress, String displayName, Boolean doubleQuote)
{
if (String.IsNullOrEmpty(displayName) == true)
{
return(mailAddress);
}
else
{
if (doubleQuote == true)
{
return(String.Format("\"{0}\" <{1}>", displayName, mailAddress));
}
else
{
return(String.Format("{0} <{1}>"
, MailParser.EncodeToMailHeaderLine(displayName, transferEncoding, encoding, MailParser.MaxCharCountPerRow - mailAddress.Length - 3)
, mailAddress));
}
}
}
static MailParser()
{
MailParser.SetDateTimeFormatString();
}
public static String EncodeToMailHeaderLine(String text, TransferEncoding encodeType, Encoding encoding, Int32 maxCharCount)
{
Byte[] bb = null;
StringBuilder sb = new StringBuilder();
Int32 StartIndex = 0;
Int32 CharCountPerRow = 0;
Int32 ByteCount = 0;
if (maxCharCount > MailParser.MaxCharCountPerRow)
{
throw new ArgumentException("maxCharCount must less than MailParser.MaxCharCountPerRow.");
}
if (String.IsNullOrEmpty(text) == true)
{
return("");
}
if (MailParser.AsciiCharOnly(text) == true)
{
StartIndex = 0;
CharCountPerRow = maxCharCount;
for (int i = 0; i < text.Length; i++)
{
sb.Append(text[i]);
if (StartIndex == CharCountPerRow)
{
sb.Append(MailParser.NewLine);
StartIndex = 0;
CharCountPerRow = MailParser.MaxCharCountPerRow;
if (i < text.Length - 1)
{
sb.Append("\t");
}
}
else
{
StartIndex += 1;
}
}
return(sb.ToString());
}
if (encodeType == TransferEncoding.Base64)
{
CharCountPerRow = (Int32)Math.Floor((maxCharCount - (encoding.WebName.Length + 10)) * 0.75);
for (int i = 0; i < text.Length; i++)
{
ByteCount = encoding.GetByteCount(text.Substring(StartIndex, (i + 1) - StartIndex));
if (ByteCount > CharCountPerRow)
{
bb = encoding.GetBytes(text.Substring(StartIndex, i - StartIndex));
sb.AppendFormat("=?{0}?B?{1}?={2}\t", encoding.WebName, Convert.ToBase64String(bb), MailParser.NewLine);
StartIndex = i;
CharCountPerRow = (Int32)Math.Floor((MailParser.MaxCharCountPerRow - (encoding.WebName.Length + 10)) * 0.75);
}
}
bb = encoding.GetBytes(text.Substring(StartIndex));
sb.AppendFormat("=?{0}?B?{1}?=", encoding.WebName, Convert.ToBase64String(bb));
return(sb.ToString());
}
else if (encodeType == TransferEncoding.QuotedPrintable)
{
CharCountPerRow = (Int32)Math.Floor((maxCharCount - (Double)(encoding.WebName.Length + 10)) / 3);
for (int i = 0; i < text.Length; i++)
{
ByteCount = encoding.GetByteCount(text.Substring(StartIndex, (i + 1) - StartIndex));
if (ByteCount > CharCountPerRow)
{
bb = encoding.GetBytes(text.Substring(StartIndex, i - StartIndex));
sb.AppendFormat("=?{0}?Q?{1}?={2}\t", encoding.WebName, MailParser.ToQuotedPrintableOnHeader(Encoding.ASCII.GetString(bb)), MailParser.NewLine);
StartIndex = i;
CharCountPerRow = (Int32)Math.Floor((MailParser.MaxCharCountPerRow - (encoding.WebName.Length + 10)) * 0.75);
}
}
bb = encoding.GetBytes(text.Substring(StartIndex));
sb.AppendFormat("=?{0}?Q?{1}?=", encoding.WebName, MailParser.ToQuotedPrintable(Encoding.ASCII.GetString(bb)));
return(sb.ToString());
}
else
{
return(text);
}
}
public static String EncodeToMailHeaderLine(String text, TransferEncoding encodeType, Encoding encoding)
{
return(MailParser.EncodeToMailHeaderLine(text, encodeType, encoding, MailParser.MaxCharCountPerRow));
}
