/// <summary>
/// Parse a rfc 2822 header field with parameters
/// </summary>
/// <param name="field">field name</param>
/// <param name="fieldbody">field body to parse</param>
/// <returns>A <see cref="System.Collections.Specialized.StringDictionary" /> from the parsed field body</returns>
public static System.Collections.Specialized.StringDictionary parseHeaderFieldBody(System.String field, System.String fieldbody)
{
if (fieldbody == null)
{
return(null);
}
// FIXME: rewrite parseHeaderFieldBody to being regexp based.
fieldbody = MimeTools.uncommentString(fieldbody);
System.Collections.Specialized.StringDictionary fieldbodycol = new System.Collections.Specialized.StringDictionary();
System.String[] words = fieldbody.Split(new Char[] { ';' });
if (words.Length > 0)
{
fieldbodycol.Add(field.ToLower(), words[0].ToLower());
for (int i = 1; i < words.Length; i++)
{
System.String[] param = words[i].Trim(new Char[] { ' ', '\t' }).Split(new Char[] { '=' }, 2);
if (param.Length == 2)
{
param[0] = param[0].Trim(new Char[] { ' ', '\t' });
param[1] = param[1].Trim(new Char[] { ' ', '\t' });
if (param[1].StartsWith("\"") && !param[1].EndsWith("\""))
{
do
{
param[1] += ";" + words[++i];
} while (!words[i].EndsWith("\"") && i < words.Length);
}
fieldbodycol.Add(param[0], MimeTools.parserfc2047Header(param[1].TrimEnd(';').Trim('\"')));
}
}
}
return(fieldbodycol);
}
/// <summary>
/// Parse a rfc 2822 date and time specification. rfc 2822 section 3.3
/// </summary>
/// <param name="date">rfc 2822 date-time</param>
/// <returns>A <see cref="System.DateTime" /> from the parsed header body</returns>
public static System.DateTime parseDate(System.String date)
{
if (date == null || date.Equals(System.String.Empty))
{
return(System.DateTime.MinValue);
}
System.DateTime msgDateTime;
date = MimeTools.uncommentString(date);
msgDateTime = new System.DateTime(0);
try {
// TODO: Complete the list
date = date.Replace("UT", "+0000");
date = date.Replace("GMT", "+0000");
date = date.Replace("EDT", "-0400");
date = date.Replace("EST", "-0500");
date = date.Replace("CDT", "-0500");
date = date.Replace("MDT", "-0600");
date = date.Replace("MST", "-0600");
date = date.Replace("EST", "-0700");
date = date.Replace("PDT", "-0700");
date = date.Replace("PST", "-0800");
date = date.Replace("AM", System.String.Empty);
date = date.Replace("PM", System.String.Empty);
int rpos = date.LastIndexOfAny(new Char[] { ' ', '\t' });
if (rpos > 0 && rpos != date.Length - 6)
{
date = date.Substring(0, rpos + 1) + "-0000";
}
date = date.Insert(date.Length - 2, ":");
msgDateTime = DateTime.ParseExact(date,
_date_formats,
System.Globalization.CultureInfo.CreateSpecificCulture("en-us"),
System.Globalization.DateTimeStyles.AllowInnerWhite);
#if LOG
} catch (System.Exception e) {
if (log.IsErrorEnabled)
{
log.Error(System.String.Concat("Error parsing date: [", date, "]"), e);
}
#else
} catch (System.Exception) {
#endif
msgDateTime = new System.DateTime(0);
}
return(msgDateTime);
}
/// <summary>
/// Returns the requested header field body.
/// </summary>
/// <param name="name">Header field name</param>
/// <param name="defaultvalue">Value to return when the requested field is not present</param>
/// <param name="uncomment"><b>true</b> to uncomment using <see cref="MimeTools.uncommentString" />; <b>false</b> to return the value unchanged.</param>
/// <param name="rfc2047decode"><b>true</b> to decode <see cref="MimeTools.rfc2047decode" />; <b>false</b> to return the value unchanged.</param>
/// <returns>Header field body</returns>
public System.String GetHeaderField(System.String name, System.String defaultvalue, bool uncomment, bool rfc2047decode)
{
System.String tmp = this.GetProperty(name);
if (tmp == null)
{
tmp = defaultvalue;
}
else
{
if (uncomment)
{
tmp = MimeTools.uncommentString(tmp);
}
if (rfc2047decode)
{
tmp = MimeTools.rfc2047decode(tmp);
}
}
return(tmp);
}