private RarHeader(RarCrcBinaryReader reader, bool isRar5, ArchiveEncoding archiveEncoding)
{
_headerType = HeaderType.Null;
_isRar5 = isRar5;
ArchiveEncoding = archiveEncoding;
if (IsRar5)
{
HeaderCrc = reader.ReadUInt32();
reader.ResetCrc();
HeaderSize = (int)reader.ReadRarVIntUInt32(3);
reader.Mark();
HeaderCode = reader.ReadRarVIntByte();
HeaderFlags = reader.ReadRarVIntUInt16(2);
if (HasHeaderFlag(HeaderFlagsV5.HAS_EXTRA))
{
ExtraSize = reader.ReadRarVIntUInt32();
}
if (HasHeaderFlag(HeaderFlagsV5.HAS_DATA))
{
AdditionalDataSize = (long)reader.ReadRarVInt();
}
}
else
{
reader.Mark();
HeaderCrc = reader.ReadUInt16();
reader.ResetCrc();
HeaderCode = reader.ReadByte();
HeaderFlags = reader.ReadUInt16();
HeaderSize = reader.ReadInt16();
if (HasHeaderFlag(HeaderFlagsV4.HAS_DATA))
{
AdditionalDataSize = reader.ReadUInt32();
}
}
}
internal static RarHeader Create(RarCrcBinaryReader reader)
{
try
{
RarHeader header = new RarHeader();
reader.Mark();
header.ReadStartFromReader(reader);
header.ReadBytes += reader.CurrentReadByteCount;
return(header);
}
catch (EndOfStreamException)
{
return(null);
}
}
internal static RarHeader Create(RarCrcBinaryReader reader, ArchiveEncoding archiveEncoding)
{
try
{
RarHeader header = new RarHeader();
header.ArchiveEncoding = archiveEncoding;
reader.Mark();
header.ReadStartFromReader(reader);
header.ReadBytes += reader.CurrentReadByteCount;
return header;
}
catch (EndOfStreamException)
{
return null;
}
}
internal T PromoteHeader<T>(RarCrcBinaryReader reader)
where T : RarHeader, new()
{
T header = new T();
header.FillBase(this);
reader.Mark();
header.ReadFromReader(reader);
header.ReadBytes += reader.CurrentReadByteCount;
int headerSizeDiff = header.HeaderSize - (int)header.ReadBytes;
if (headerSizeDiff > 0)
{
reader.ReadBytes(headerSizeDiff);
}
VerifyHeaderCrc(reader.GetCrc());
return header;
}