public void ReadFiles(Stream blocksStream, string path)
{
fileList = new StreamFile[m_DirectoryInfo.Length];
for (int i = 0; i < m_DirectoryInfo.Length; i++)
{
var node = m_DirectoryInfo[i];
var file = new StreamFile();
fileList[i] = file;
file.fileName = Path.GetFileName(node.path);
if (node.size >= int.MaxValue)
{
/*var memoryMappedFile = MemoryMappedFile.CreateNew(file.fileName, entryinfo_size);
* file.stream = memoryMappedFile.CreateViewStream();*/
var extractPath = path + "_unpacked" + Path.DirectorySeparatorChar;
Directory.CreateDirectory(extractPath);
file.stream = new FileStream(extractPath + file.fileName, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);
}
else
{
file.stream = new MemoryStream((int)node.size);
}
blocksStream.Position = node.offset;
blocksStream.CopyTo(file.stream, node.size);
file.stream.Position = 0;
}
}
public WebFile(EndianBinaryReader reader)
{
reader.endian = EndianType.LittleEndian;
var signature = reader.ReadStringToNull();
var headLength = reader.ReadInt32();
var dataList = new List <WebData>();
while (reader.BaseStream.Position < headLength)
{
var data = new WebData();
data.dataOffset = reader.ReadInt32();
data.dataLength = reader.ReadInt32();
var pathLength = reader.ReadInt32();
data.path = Encoding.UTF8.GetString(reader.ReadBytes(pathLength));
dataList.Add(data);
}
fileList = new StreamFile[dataList.Count];
for (int i = 0; i < dataList.Count; i++)
{
var data = dataList[i];
var file = new StreamFile();
file.path = data.path;
file.fileName = Path.GetFileName(data.path);
reader.BaseStream.Position = data.dataOffset;
file.stream = new MemoryStream(reader.ReadBytes(data.dataLength));
fileList[i] = file;
}
}
private void ReadWebData(BinaryReader reader)
{
var signature = reader.ReadStringToNull();
if (signature != "UnityWebData1.0")
{
return;
}
var headLength = reader.ReadInt32();
var dataList = new List <WebData>();
while (reader.BaseStream.Position < headLength)
{
var data = new WebData();
data.dataOffset = reader.ReadInt32();
data.dataLength = reader.ReadInt32();
var pathLength = reader.ReadInt32();
data.path = Encoding.UTF8.GetString(reader.ReadBytes(pathLength));
dataList.Add(data);
}
fileList = new StreamFile[dataList.Count];
for (int i = 0; i < dataList.Count; i++)
{
var data = dataList[i];
var file = new StreamFile();
file.path = data.path;
file.fileName = Path.GetFileName(data.path);
reader.BaseStream.Position = data.dataOffset;
file.stream = new MemoryStream(reader.ReadBytes(data.dataLength));
fileList[i] = file;
}
}
private void ReadWebData(EndianBinaryReader reader)
{
var signature = reader.ReadStringToNull();
if (signature != "UnityWebData1.0")
{
return;
}
var headLength = reader.ReadInt32();
var dataList = new List <WebData>();
while (reader.Position < headLength)
{
var data = new WebData();
data.dataOffset = reader.ReadInt32();
data.dataLength = reader.ReadInt32();
var pathLength = reader.ReadInt32();
data.path = Encoding.UTF8.GetString(reader.ReadBytes(pathLength));
dataList.Add(data);
}
foreach (var data in dataList)
{
var file = new StreamFile();
file.fileName = Path.GetFileName(data.path);
reader.Position = data.dataOffset;
file.stream = new MemoryStream(reader.ReadBytes(data.dataLength));
fileList.Add(file);
}
}
private void GetAssetsFiles(EndianBinaryReader reader, int offset)
{
int fileCount = reader.ReadInt32();
for (int i = 0; i < fileCount; i++)
{
var file = new StreamFile();
file.fileName = Path.GetFileName(reader.ReadStringToNull());
int fileOffset = reader.ReadInt32();
fileOffset += offset;
int fileSize = reader.ReadInt32();
long nextFile = reader.Position;
reader.Position = fileOffset;
var buffer = reader.ReadBytes(fileSize);
file.stream = new MemoryStream(buffer);
fileList.Add(file);
reader.Position = nextFile;
}
}
private void ReadFormat6(EndianBinaryReader bundleReader, bool padding = false)
{
var bundleSize = bundleReader.ReadInt64();
int compressedSize = bundleReader.ReadInt32();
int uncompressedSize = bundleReader.ReadInt32();
int flag = bundleReader.ReadInt32();
if (padding)
{
bundleReader.ReadByte();
}
byte[] blocksInfoBytes;
if ((flag & 0x80) != 0)//at end of file
{
var position = bundleReader.Position;
bundleReader.Position = bundleReader.BaseStream.Length - compressedSize;
blocksInfoBytes = bundleReader.ReadBytes(compressedSize);
bundleReader.Position = position;
}
else
{
blocksInfoBytes = bundleReader.ReadBytes(compressedSize);
}
var blocksInfoCompressedStream = new MemoryStream(blocksInfoBytes);
MemoryStream blocksInfoDecompressedStream;
switch (flag & 0x3F)
{
default: //None
{
blocksInfoDecompressedStream = blocksInfoCompressedStream;
break;
}
case 1: //LZMA
{
blocksInfoDecompressedStream = SevenZipHelper.StreamDecompress(blocksInfoCompressedStream);
blocksInfoCompressedStream.Close();
break;
}
case 2: //LZ4
case 3: //LZ4HC
{
byte[] uncompressedBytes = new byte[uncompressedSize];
using (var decoder = new Lz4DecoderStream(blocksInfoCompressedStream))
{
decoder.Read(uncompressedBytes, 0, uncompressedSize);
}
blocksInfoDecompressedStream = new MemoryStream(uncompressedBytes);
break;
}
//case 4:LZHAM?
}
using (var blocksInfoReader = new EndianBinaryReader(blocksInfoDecompressedStream))
{
blocksInfoReader.Position = 0x10;
int blockcount = blocksInfoReader.ReadInt32();
var blockInfos = new BlockInfo[blockcount];
for (int i = 0; i < blockcount; i++)
{
blockInfos[i] = new BlockInfo
{
uncompressedSize = blocksInfoReader.ReadUInt32(),
compressedSize = blocksInfoReader.ReadUInt32(),
flag = blocksInfoReader.ReadInt16()
};
}
Stream dataStream;
var uncompressedSizeSum = blockInfos.Sum(x => x.uncompressedSize);
if (uncompressedSizeSum > int.MaxValue)
{
/*var memoryMappedFile = MemoryMappedFile.CreateNew(Path.GetFileName(path), uncompressedSizeSum);
* assetsDataStream = memoryMappedFile.CreateViewStream();*/
dataStream = new FileStream(path + ".temp", FileMode.Create, FileAccess.ReadWrite, FileShare.None, 4096, FileOptions.DeleteOnClose);
}
else
{
dataStream = new MemoryStream((int)uncompressedSizeSum);
}
foreach (var blockInfo in blockInfos)
{
switch (blockInfo.flag & 0x3F)
{
default: //None
{
bundleReader.BaseStream.CopyTo(dataStream, blockInfo.compressedSize);
break;
}
case 1: //LZMA
{
SevenZipHelper.StreamDecompress(bundleReader.BaseStream, dataStream, blockInfo.compressedSize, blockInfo.uncompressedSize);
break;
}
case 2: //LZ4
case 3: //LZ4HC
{
var lz4Stream = new Lz4DecoderStream(bundleReader.BaseStream, blockInfo.compressedSize);
lz4Stream.CopyTo(dataStream, blockInfo.uncompressedSize);
break;
}
//case 4:LZHAM?
}
}
dataStream.Position = 0;
using (dataStream)
{
var entryinfo_count = blocksInfoReader.ReadInt32();
for (int i = 0; i < entryinfo_count; i++)
{
var file = new StreamFile();
var entryinfo_offset = blocksInfoReader.ReadInt64();
var entryinfo_size = blocksInfoReader.ReadInt64();
flag = blocksInfoReader.ReadInt32();
file.fileName = Path.GetFileName(blocksInfoReader.ReadStringToNull());
if (entryinfo_size > int.MaxValue)
{
/*var memoryMappedFile = MemoryMappedFile.CreateNew(file.fileName, entryinfo_size);
* file.stream = memoryMappedFile.CreateViewStream();*/
var extractPath = path + "_unpacked\\";
Directory.CreateDirectory(extractPath);
file.stream = File.Create(extractPath + file.fileName);
}
else
{
file.stream = new MemoryStream((int)entryinfo_size);
}
dataStream.Position = entryinfo_offset;
dataStream.CopyTo(file.stream, entryinfo_size);
file.stream.Position = 0;
fileList.Add(file);
}
}
}
}
