public Packfile(Stream stream)
{
DataStream = stream;
stream.Seek(0, SeekOrigin.Begin);
FileData = stream.ReadStruct<PackfileFileData>();
m_Files = new List<IPackfileEntry>();
stream.Seek(GetEntryDataOffset(), SeekOrigin.Begin);
List<PackfileEntryFileData> entryFileData = new List<PackfileEntryFileData>();
for (int i = 0; i < FileData.IndexCount; i++)
{
var fileData = stream.ReadStruct<PackfileEntryFileData>();
entryFileData.Add(fileData);
}
List<string> fileNames = new List<string>();
for (int i = 0; i < FileData.IndexCount; i++)
{
var fileData = entryFileData[i];
stream.Seek(CalculateEntryNamesOffset() + fileData.FilenameOffset, SeekOrigin.Begin);
string name = stream.ReadAsciiNullTerminatedString();
stream.Seek(CalculateExtensionsOffset() + fileData.ExtensionOffset, SeekOrigin.Begin);
string extension = stream.ReadAsciiNullTerminatedString();
m_Files.Add(new PackfileEntry(this, fileData, name + "." + extension));
}
}
public Packfile(Stream stream, bool isStr2)
{
IsStr2 = isStr2;
stream.Seek(0, SeekOrigin.Begin);
FileData = stream.ReadStruct<PackfileFileData>();
m_Files = new List<IPackfileEntry>();
uint runningPosition = 0;
List<PackfileEntryFileData> entryFileData = new List<PackfileEntryFileData>();
for (int i = 0; i < FileData.NumFiles; i++)
{
PackfileEntryFileData data = stream.ReadStruct<PackfileEntryFileData>();
if (IsCondensed && IsCompressed)
{
data.Flags = 0;
data.Start = runningPosition;
runningPosition += data.Size;
}
else if (IsCondensed)
{
data.Start = runningPosition;
runningPosition += data.Size.Align(16);
}
entryFileData.Add(data);
}
for (int i = 0; i < FileData.NumFiles; i++)
{
stream.Align(2);
string filename = stream.ReadAsciiNullTerminatedString();
stream.Seek(1, SeekOrigin.Current);
m_Files.Add(new PackfileEntry(this, entryFileData[i], filename));
stream.Align(2);
}
if (IsCondensed && IsCompressed)
{
DataOffset = 0;
byte[] compressedData = new byte[FileData.CompressedDataSize];
stream.Read(compressedData, 0, (int)FileData.CompressedDataSize);
using (MemoryStream tempStream = new MemoryStream(compressedData))
{
using (Stream s = new ZlibStream(tempStream, CompressionMode.Decompress, true))
{
byte[] uncompressedData = new byte[FileData.DataSize];
s.Read(uncompressedData, 0, (int)FileData.DataSize);
DataStream = new MemoryStream(uncompressedData);
}
}
}
else
{
DataStream = stream;
DataOffset = stream.Position;
}
}
