public bool Equals(PakEntry entry)
{
if (entry == null)
{
return(false);
}
if (CompressedSize != entry.CompressedSize)
{
return(false);
}
if (UncompressedSize != entry.UncompressedSize)
{
return(false);
}
if (CompressionType != entry.CompressionType)
{
return(false);
}
if (!Hash.SequenceEqual(entry.Hash))
{
return(false);
}
if (EncryptionType != entry.EncryptionType)
{
return(false);
}
if (ChunkSize != entry.ChunkSize)
{
return(false);
}
return(true);
}
public void Write(PakEntry entry, bool fileLevel)
{
if (!fileLevel)
{
Write(entry.Name);
}
if (fileLevel)
{
Write(0L);
}
else
{
Write(entry.Offset);
}
Write(entry.CompressedSize);
Write(entry.UncompressedSize);
Write(entry.CompressionType);
Write(entry.Hash);
if (entry.CompressionType != 0)
{
Write(entry.Chunks.Count);
foreach (var chunk in entry.Chunks)
{
Write(chunk.ChunkOffset);
Write(chunk.ChunkEnd);
}
}
Write(entry.EncryptionType);
Write(entry.ChunkSize);
}
private PakEntry ReadPakEntry(string name)
{
PakEntry pakEntry = new PakEntry();
pakEntry.Name = name;
pakEntry.Offset = ReadInt64();
pakEntry.CompressedSize = ReadInt64();
pakEntry.UncompressedSize = ReadInt64();
pakEntry.CompressionType = ReadInt32();
pakEntry.Hash = ReadBytes(20);
if (pakEntry.CompressionType != 0)
{
var numberOfCompressionChunks = ReadInt32();
for (var i = 0; i < numberOfCompressionChunks; i++)
{
var chunk = new PakChunkDescriptor();
chunk.ChunkOffset = ReadInt64();
chunk.ChunkEnd = ReadInt64();
pakEntry.Chunks.Add(chunk);
}
}
pakEntry.EncryptionType = ReadByte();
pakEntry.ChunkSize = ReadInt32();
return(pakEntry);
}
public void ExtractFile(string directory, PakEntry pakEntry, PakBinaryReader reader)
{
var currentPakEntry = reader.ReadFileLevelPakEntry();
if (!currentPakEntry.Equals(pakEntry))
{
return;
}
string compoundName = directory + @"\" + pakEntry.Name.Replace(@"/", @"\");
if (!compoundName.Contains(@"\"))
{
return;
}
Directory.CreateDirectory(Path.GetDirectoryName(compoundName));
using (var fileStream = File.Open(compoundName, FileMode.Create))
{
using (var writer = new BinaryWriter(fileStream))
{
switch (pakEntry.CompressionType)
{
case 0:
writer.Write(reader.ReadBytes((int)currentPakEntry.UncompressedSize));
break;
case 1:
foreach (var chunk in pakEntry.Chunks)
{
var compressedData = reader.ReadBytes((int)(chunk.ChunkEnd - chunk.ChunkOffset));
var decompressed = ZlibStream.UncompressBuffer(compressedData);
writer.Write(decompressed);
}
break;
case 4:
case 16400:
var remainingSizeToUncompress = pakEntry.UncompressedSize;
foreach (var chunk in pakEntry.Chunks)
{
var decompressedSize = remainingSizeToUncompress > pakEntry.ChunkSize
? pakEntry.ChunkSize
: remainingSizeToUncompress;
var compressedData = reader.ReadBytes((int)(chunk.ChunkEnd - chunk.ChunkOffset));
var decompressed = OodleHandler.Decompress(compressedData, decompressedSize);
writer.Write(decompressed);
remainingSizeToUncompress -= pakEntry.ChunkSize;
}
break;
default:
throw new InvalidOperationException();
}
}
}
}
public override bool Equals(object obj)
{
PakEntry comparing = obj as PakEntry;
if (comparing == null)
{
return(false);
}
return(Equals(comparing));
}
public void CreateDataEntry(PakBinaryWriter writer, PakEntry pakEntry, bool usePadding)
{
pakEntry.Offset = writer.BaseStream.Position;
var bytes = File.ReadAllBytes(pakEntry.Import);
pakEntry.Hash = HashBytes(bytes);
writer.Write(pakEntry, true);
writer.Write(bytes);
if (usePadding && pakEntry.Padded)
{
var toWrite = 2048 - writer.BaseStream.Position % 2048;
if (toWrite != 2048)
{
writer.Write(new byte[toWrite]);
}
}
}
public void SaveDataEntry(PakBinaryReader reader, PakBinaryWriter writer, PakEntry pakEntry, bool usePadding)
{
if (pakEntry.Offset == -1)
{
return;
}
long originalOffset = pakEntry.Offset;
pakEntry.Offset = writer.BaseStream.Position;
if (Archive.Version < 7)
{
var offsetDifference = pakEntry.Offset - originalOffset;
foreach (var chunk in pakEntry.Chunks)
{
chunk.ChunkEnd += offsetDifference;
chunk.ChunkOffset += offsetDifference;
}
}
writer.Write(pakEntry, true);
if (pakEntry.Import != null)
{
using (var importFileStream = File.Open(pakEntry.Import, FileMode.Open))
{
var importReader = new PakBinaryReader(importFileStream);
writer.Write(importReader.ReadBytes((int)pakEntry.UncompressedSize));
}
}
else
{
if (reader.BaseStream.Position != originalOffset)
{
reader.BaseStream.Seek(originalOffset, SeekOrigin.Begin);
}
var importFilePakEntry = reader.ReadFileLevelPakEntry();
if (!importFilePakEntry.Equals(pakEntry))
{
return;
}
switch (pakEntry.CompressionType)
{
case 0:
writer.Write(reader.ReadBytes((int)pakEntry.UncompressedSize));
break;
case 1:
case 4:
case 16400:
foreach (var chunk in pakEntry.Chunks)
{
var compressedData = reader.ReadBytes((int)(chunk.ChunkEnd - chunk.ChunkOffset));
writer.Write(compressedData);
}
break;
default:
throw new InvalidOperationException();
}
}
if (usePadding && pakEntry.Padded)
{
var toWrite = 2048 - writer.BaseStream.Position % 2048;
if (toWrite != 2048)
{
writer.Write(new byte[toWrite]);
}
}
}
