Gmod Uncompress /cache/*.lua

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

using SevenZip;
using SevenZip.Compression.LZMA;

namespace GMODDataPack
{
    class Program
    {
        static string ReadCString(BinaryReader r)
        {
            StringBuilder sb = new StringBuilder();
            char c = r.ReadChar();
            while (c != '\0')
            {
                sb.Append(c);
                c = r.ReadChar();
            }
            return sb.ToString();
        }

        static void Main(string[] args)
        {
            for( int i = 0; i < args.Length; i++ )
            {
                byte[] bytes = File.ReadAllBytes( args[ i ] );
                BinaryReader r = new BinaryReader( new MemoryStream( bytes ) );

                r.ReadBytes( 4 );
                byte[] lzma_props = r.ReadBytes( 5 );
                Int64 real_size = r.ReadInt64();

                int size = bytes.Length - 5 - 4 - 4;

                Console.WriteLine( "{0}: {1} bytes -> {2} bytes", args[i], size, real_size );

                SevenZip.Compression.LZMA.Decoder dec = new SevenZip.Compression.LZMA.Decoder();
                dec.SetDecoderProperties( lzma_props );

                MemoryStream msout = new MemoryStream();
                dec.Code( r.BaseStream, msout, size, real_size, null );

                msout.Position = 0;
                byte[] output = msout.ToArray();
                byte[] no_null = new byte[output.Length - 1];
                Array.Copy( output, no_null, no_null.Length );

                if( !Directory.Exists( "./uncompressed" ) )
                    Directory.CreateDirectory( "./uncompressed" );

                File.WriteAllBytes( "./uncompressed/" + args[ i ], no_null );
            }
        }
    }
}