private bool TryGetBracketedLongValue(ImapList list, string name, out long retVal)
{
bool isOk = false;
retVal = default(long);
var pos = list.IndexOfString(name);
if (pos >= 0)
{
isOk = long.TryParse(list.GetStringAt(pos + 1).TrimEnd(']'), out retVal);
}
return isOk;
}
internal ImapBodyPart(string section, ImapList list)
{
Section = section;
StringBuilder builder = new StringBuilder(string.Format("{0}/{1}", list.GetStringAt(0).ToLowerInvariant(), list.GetStringAt(1).ToLowerInvariant()));
ImapList paramsList = list.GetListAt(2);
for (int i = 0; i < paramsList.Count; i += 2)
{
builder.AppendFormat(";{0}=\"{1}\"", paramsList.GetStringAt(i), paramsList.GetStringAt(i + 1));
}
try
{
ContentType = new ContentType(builder.ToString());
}
catch
{
ContentType = new ContentType();
}
ID = list.GetStringAt(3);
Description = list.GetStringAt(4);
Encoding = list.GetStringAt(5);
int size;
if (int.TryParse(list.GetStringAt(6), out size))
{
Size = size;
}
if (string.IsNullOrEmpty(ContentType.CharSet))
{
ContentType.CharSet = ASCIIEncoding.ASCII.BodyName;
}
}
internal ImapMessage(long number, ImapList list, IEnumerable<string> extensionParameterNames)
{
Number = number;
int uidIndex = list.IndexOfString("UID");
int bodyIndex = list.IndexOfString("BODYSTRUCTURE");
int envelopeIndex = list.IndexOfString("ENVELOPE");
if (uidIndex != -1)
{
Uid = long.Parse(list.GetStringAt(uidIndex + 1));
}
if (envelopeIndex != -1)
{
ImapList envelopeList = list.GetListAt(envelopeIndex + 1);
string timestampString = envelopeList.GetStringAt(0);
DateTime timestamp;
if (TryParseTimestamp(timestampString, out timestamp))
{
Timestamp = timestamp;
}
Subject = RFC2047Decoder.Parse(envelopeList.GetStringAt(1));
Sender = ParseAddresses(envelopeList.GetListAt(2)).FirstOrDefault();
From = ParseAddresses(envelopeList.GetListAt(3)).FirstOrDefault();
ReplyTo = ParseAddresses(envelopeList.GetListAt(4)).FirstOrDefault();
To = ParseAddresses(envelopeList.GetListAt(5)).ToArray();
Cc = ParseAddresses(envelopeList.GetListAt(6)).ToArray();
Bcc = ParseAddresses(envelopeList.GetListAt(7)).ToArray();
ID = envelopeList.GetStringAt(8);
}
if (bodyIndex != -1)
{
ImapList bodyList = list.GetListAt(bodyIndex + 1);
if (bodyList.Count != 0)
{
BodyParts = ParseBodyParts(string.Empty, bodyList).ToArray();
}
}
if (null != extensionParameterNames)
{
var extensionParams = new Dictionary<string, object>();
foreach (var paramName in extensionParameterNames)
{
int index = list.IndexOfString(paramName);
if (index != -1)
{
int valueIndex = index + 1;
object value = null;
if (list.IsStringAt(valueIndex))
{
value = list.GetStringAt(valueIndex);
}
else if (list.IsListAt(valueIndex))
{
value = list.GetListAt(valueIndex).ToBasicTypesList();
}
if (null != value)
{
extensionParams[paramName] = value;
}
}
}
if (extensionParams.Count > 0)
{
ExtensionParameters = extensionParams;
}
}
}
internal ImapMessage(long number, ImapList list)
: this(number, list, null)
{ }
private static IEnumerable<MailAddress> ParseAddresses(ImapList list)
{
for (int i = 0; i < list.Count; i++)
{
ImapList addressList = list.GetListAt(i);
string displayName = RFC2047Decoder.Parse(addressList.GetStringAt(0));
string user = RFC2047Decoder.Parse(addressList.GetStringAt(2));
string host = RFC2047Decoder.Parse(addressList.GetStringAt(3));
if (!string.IsNullOrEmpty(user) &&
!string.IsNullOrEmpty(host))
{
string addressString = string.Format("{0}@{1}",
user, host);
MailAddress address = null;
try
{
if (string.IsNullOrEmpty(displayName))
{
address = new MailAddress(addressString);
}
else
{
address = new MailAddress(addressString, displayName);
}
}
catch (FormatException) { }
if (address != null)
{
yield return address;
}
}
}
}
private static IEnumerable<ImapBodyPart> ParseBodyParts(string section, ImapList bodyList)
{
if (bodyList.IsStringAt(0))
{
yield return new ImapBodyPart(string.IsNullOrEmpty(section) ? "1" : section, bodyList);
}
else
{
string innerSectionPrefix = string.IsNullOrEmpty(section) ? string.Empty : section + ".";
string mutipartType = bodyList.GetStringAt(bodyList.Count - 4);
if (!string.IsNullOrEmpty(mutipartType))
{
for (int i = 0; i < bodyList.Count - 4; i++)
{
string innerSection = innerSectionPrefix + (i + 1).ToString();
ImapList innerBodyList = bodyList.GetListAt(i);
if (innerBodyList.Count != 0)
{
foreach (ImapBodyPart part in ParseBodyParts(innerSection, innerBodyList))
{
yield return part;
}
}
}
}
}
}
