public void Write(Resource resource)
{
Compression = CompressionMethod.LZ4;
CompressionLevel = CompressionLevel.MaxCompression;
using (this.Writer = new BinaryWriter(Stream))
using (this.NodeStream = new MemoryStream())
using (this.NodeWriter = new BinaryWriter(NodeStream))
using (this.AttributeStream = new MemoryStream())
using (this.AttributeWriter = new BinaryWriter(AttributeStream))
using (this.ValueStream = new MemoryStream())
using (this.ValueWriter = new BinaryWriter(ValueStream))
{
NextNodeIndex = 0;
NextAttributeIndex = 0;
NodeIndices = new Dictionary<Node, int>();
StringHashMap = new List<List<string>>(StringHashMapSize);
while (StringHashMap.Count < StringHashMapSize)
{
StringHashMap.Add(new List<string>());
}
WriteRegions(resource);
byte[] stringBuffer = null;
using (var stringStream = new MemoryStream())
using (var stringWriter = new BinaryWriter(stringStream))
{
WriteStaticStrings(stringWriter);
stringBuffer = stringStream.ToArray();
}
var nodeBuffer = NodeStream.ToArray();
var attributeBuffer = AttributeStream.ToArray();
var valueBuffer = ValueStream.ToArray();
var header = new Header();
header.Magic = BitConverter.ToUInt32(Header.Signature, 0);
header.Version = Version;
header.EngineVersion = (resource.Metadata.majorVersion << 24) |
(resource.Metadata.minorVersion << 16) |
(resource.Metadata.revision << 8) |
resource.Metadata.buildNumber;
bool chunked = (header.Version >= FileVersion.VerChunkedCompress);
byte[] stringsCompressed = BinUtils.Compress(stringBuffer, Compression, CompressionLevel);
byte[] nodesCompressed = BinUtils.Compress(nodeBuffer, Compression, CompressionLevel, chunked);
byte[] attributesCompressed = BinUtils.Compress(attributeBuffer, Compression, CompressionLevel, chunked);
byte[] valuesCompressed = BinUtils.Compress(valueBuffer, Compression, CompressionLevel, chunked);
header.StringsUncompressedSize = (UInt32)stringBuffer.Length;
header.StringsSizeOnDisk = (UInt32)stringsCompressed.Length;
header.NodesUncompressedSize = (UInt32)nodeBuffer.Length;
header.NodesSizeOnDisk = (UInt32)nodesCompressed.Length;
header.AttributesUncompressedSize = (UInt32)attributeBuffer.Length;
header.AttributesSizeOnDisk = (UInt32)attributesCompressed.Length;
header.ValuesUncompressedSize = (UInt32)valueBuffer.Length;
header.ValuesSizeOnDisk = (UInt32)valuesCompressed.Length;
header.CompressionFlags = BinUtils.MakeCompressionFlags(Compression, CompressionLevel);
header.Unknown2 = 0;
header.Unknown3 = 0;
header.Extended = ExtendedNodes ? 1u : 0u;
BinUtils.WriteStruct<Header>(Writer, ref header);
Writer.Write(stringsCompressed, 0, stringsCompressed.Length);
Writer.Write(nodesCompressed, 0, nodesCompressed.Length);
Writer.Write(attributesCompressed, 0, attributesCompressed.Length);
Writer.Write(valuesCompressed, 0, valuesCompressed.Length);
}
}
private byte[] Decompress(BinaryReader reader, uint compressedSize, uint uncompressedSize, Header header)
{
bool chunked = (header.Version >= FileVersion.VerChunkedCompress);
byte[] compressed = reader.ReadBytes((int)compressedSize);
return BinUtils.Decompress(compressed, (int)uncompressedSize, header.CompressionFlags, chunked);
}