private void SafeReadAdditionalEntryInfo(IsoTableEntryInfo info)
{
try
{
if (info.CompressedSize < 4)
{
return;
}
byte[] signature;
using (Stream input = OpenStream(info.Offset, info.CompressedSize))
using (MemoryStream output = new MemoryStream(4))
{
if (!info.IsCompressed)
{
info.IsCompressed = (input.ReadByte() == 0x01);
input.Seek(-1, SeekOrigin.Current);
}
if (info.IsCompressed)
{
input.Seek(1, SeekOrigin.Current);
int uncompressedSize = input.ReadStruct <int>();
if (uncompressedSize < 4)
{
return;
}
LZSStream decompressStream = new LZSStream(input, output);
decompressStream.Decompress(4);
output.Flush();
signature = output.ToArray();
if (signature.Length == 0)
{
return;
}
}
else
{
signature = new byte[4];
input.EnsureRead(signature, 0, 4);
}
}
info.Signature = (FFXFileSignatures)BitConverter.ToInt32(signature, 0);
}
catch (Exception ex)
{
Log.Error(ex, "Failed to read additional info of entry '{0}'", info.GetFileName());
}
finally
{
ProgressIncrement.NullSafeInvoke(1);
}
}
public void ExtractFile(IsoTableEntryInfo info, string outputPath)
{
Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
using (Stream input = OpenStream(info.Offset, info.CompressedSize))
using (Stream output = File.Create(outputPath))
{
if (!info.IsCompressed)
{
input.CopyTo(output);
}
else
{
input.Seek(1, SeekOrigin.Current);
int uncompressedSize = input.ReadStruct <int>();
LZSStream decompressStream = new LZSStream(input, output);
decompressStream.Decompress(uncompressedSize);
}
}
}
