private static ExtraFieldBase GetExtraField(
FileHeaderInfoBase headerInfo,
BinaryReader reader)
{
ushort num1 = reader.ReadUInt16();
ExtraFieldType extraFieldType = ExtraFieldBase.GetExtraFieldType(num1);
ushort num2 = reader.ReadUInt16();
byte[] extraData = reader.ReadBytes((int)num2);
ExtraFieldBase extraFieldBase;
switch (extraFieldType)
{
case ExtraFieldType.Zip64:
extraFieldBase = (ExtraFieldBase) new Zip64ExtraField(headerInfo);
break;
case ExtraFieldType.AesEncryption:
extraFieldBase = (ExtraFieldBase) new AesEncryptionExtraField();
break;
default:
extraFieldBase = (ExtraFieldBase) new UnknownExtraField(num1);
break;
}
extraFieldBase.ParseBlock(extraData);
return(extraFieldBase);
}
public static IEnumerable <ExtraFieldBase> GetExtraFields(
FileHeaderInfoBase headerInfo)
{
MemoryStream stream = new MemoryStream(headerInfo.ExtraFieldsData);
using (BinaryReader reader = new BinaryReader((Stream)stream))
{
while (stream.Position < stream.Length)
{
ExtraFieldBase field = ExtraFieldBase.GetExtraField(headerInfo, reader);
yield return(field);
}
}
}
internal Zip64ExtraField(FileHeaderInfoBase headerInfo)
{
this.headerInfo = headerInfo;
}