Ejemplo n.º 1
0
 private CacheArgs(string fileName, ByteOrder byteOrder, string buildString, CacheMetadata metadata)
 {
     FileName    = fileName;
     ByteOrder   = byteOrder;
     BuildString = buildString;
     Metadata    = metadata;
 }
Ejemplo n.º 2
0
        public static CacheArgs FromFile(string fileName)
        {
            if (fileName == null)
            {
                throw new ArgumentNullException(nameof(fileName));
            }

            if (!File.Exists(fileName))
            {
                throw Exceptions.FileNotFound(fileName);
            }

            using (var fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
                using (var reader = new EndianReader(fs, ByteOrder.LittleEndian))
                {
                    var header = reader.ReadInt32();
                    if (header == BigHeader)
                    {
                        reader.ByteOrder = ByteOrder.BigEndian;
                    }
                    else if (header != LittleHeader)
                    {
                        throw Exceptions.NotAValidMapFile(fileName);
                    }

                    var version = reader.ReadInt32();

                    int buildAddress;
                    if (new[] { 5, 7, 609 }.Contains(version)) // Halo1 Xbox, PC, CE
                    {
                        buildAddress = 64;
                    }
                    else if (version == 8)
                    {
                        reader.Seek(36, SeekOrigin.Begin);
                        version = reader.ReadInt32();
                        if (version == 0)
                        {
                            buildAddress = 288;           //Halo2 Xbox
                        }
                        else if (version == -1)
                        {
                            buildAddress = 300;                 //Halo2 Vista
                        }
                        else
                        {
                            throw Exceptions.NotAValidMapFile(fileName);
                        }
                    }
                    else if (reader.ByteOrder == ByteOrder.LittleEndian)
                    {
                        buildAddress = 288; //MCC
                    }
                    else
                    {
                        buildAddress = 284;
                    }

                    reader.Seek(buildAddress, SeekOrigin.Begin);
                    var buildString = reader.ReadNullTerminatedString(32);
                    System.Diagnostics.Debug.WriteLine($"Found build string {buildString ?? "\\0"}");

                    return(new CacheArgs(fileName, reader.ByteOrder, buildString, CacheMetadata.FromBuildString(buildString)));
                }
        }