public void TestLittleEndianOrderBytes()
{
Guid guid = Guid.NewGuid();
byte[] data = guid.ToByteArray();
byte[] data2 = GuidExtensions.ToLittleEndianBytes(guid);
byte[] data3 = EndianOrder.LittleEndian.GetBytes(guid);
Guid guid2 = GuidExtensions.ToLittleEndianGuid(data2);
Guid guid3 = EndianOrder.LittleEndian.ToGuid(data3, 0);
foreach (var b in data)
{
System.Console.Write("{0:X2} ", b);
}
System.Console.WriteLine();
foreach (var b in data2)
{
System.Console.Write("{0:X2} ", b);
}
System.Console.WriteLine();
foreach (var b in data3)
{
System.Console.Write("{0:X2} ", b);
}
System.Console.WriteLine();
System.Console.WriteLine(guid);
System.Console.WriteLine(guid2);
System.Console.WriteLine(guid3);
Assert.AreEqual(guid, guid2);
Assert.AreEqual(guid, guid3);
Assert.IsTrue(data.SequenceEqual(data2));
Assert.IsTrue(data.SequenceEqual(data3));
}
/// <summary>
/// Writes a guid in little endian bytes to the stream
/// </summary>
/// <param name="stream"></param>
/// <param name="value"></param>
public static void Write(this Stream stream, Guid value)
{
Write(stream, GuidExtensions.ToLittleEndianBytes(value));
}
/// <summary>
/// This will return a byte array of data that can be written to an archive file.
/// </summary>
public byte[] GetBytes()
{
if (!IsFileAllocationTableValid())
{
throw new InvalidOperationException("File Allocation Table is invalid");
}
byte[] dataBytes = new byte[m_blockSize];
MemoryStream stream = new MemoryStream(dataBytes);
BinaryWriter dataWriter = new BinaryWriter(stream);
dataWriter.Write(FileAllocationTableHeaderBytes);
if (BitConverter.IsLittleEndian)
{
dataWriter.Write('L');
}
else
{
dataWriter.Write('B');
}
dataWriter.Write((byte)(BitMath.CountBitsSet((uint)(m_blockSize - 1))));
dataWriter.Write(FileAllocationReadTableVersion);
dataWriter.Write(FileAllocationWriteTableVersion);
dataWriter.Write(FileAllocationHeaderVersion);
dataWriter.Write((byte)(m_isSimplifiedFileFormat ? 2 : 1));
dataWriter.Write(m_headerBlockCount);
dataWriter.Write(m_lastAllocatedBlock);
dataWriter.Write(m_snapshotSequenceNumber);
dataWriter.Write(m_nextFileId);
dataWriter.Write(m_archiveId.ToByteArray());
dataWriter.Write(m_archiveType.ToByteArray());
dataWriter.Write((short)m_files.Count);
foreach (SubFileHeader node in m_files)
{
node.Save(dataWriter);
}
//Metadata Flags
if (m_flags.Count > 0)
{
Encoding7Bit.WriteInt15(dataWriter.Write, (short)FileHeaderAttributes.FileFlags);
Encoding7Bit.WriteInt15(dataWriter.Write, (short)(m_flags.Count * 16));
foreach (var flag in m_flags)
{
dataWriter.Write(GuidExtensions.ToLittleEndianBytes(flag));
}
}
if (m_unknownAttributes != null)
{
foreach (var md in m_unknownAttributes)
{
Encoding7Bit.WriteInt15(dataWriter.Write, md.Key);
Encoding7Bit.WriteInt15(dataWriter.Write, (short)md.Value.Length);
dataWriter.Write(md.Value);
}
}
if (m_userAttributes != null)
{
foreach (var md in m_userAttributes)
{
Encoding7Bit.WriteInt15(dataWriter.Write, (short)FileHeaderAttributes.UserAttributes);
dataWriter.Write(GuidExtensions.ToLittleEndianBytes(md.Key));
Encoding7Bit.WriteInt15(dataWriter.Write, (short)md.Value.Length);
dataWriter.Write(md.Value);
}
}
Encoding7Bit.WriteInt15(dataWriter.Write, (short)FileHeaderAttributes.EndOfAttributes);
Encoding7Bit.WriteInt15(dataWriter.Write, 0);
if (stream.Position + 32 > dataBytes.Length)
{
throw new Exception("the file size exceedes the allowable size.");
}
WriteFooterData(dataBytes);
return(dataBytes);
}