static void Main(string[] args)
{
Bio.Header("godotdec", VERSION, "2018-2020", "A simple unpacker for Godot Engine package files (.pck|.exe)",
"[<options>] <input_file> [<output_directory>]\n\nOptions:\n-c\t--convert\tConvert textures and audio files");
if (Bio.HasCommandlineSwitchHelp(args))
{
return;
}
ParseCommandLine(args.ToList());
var failed = 0;
using (var inputStream = new BinaryReader(File.Open(inputFile, FileMode.Open))) {
if (inputStream.ReadInt32() != MAGIC)
{
inputStream.BaseStream.Seek(-4, SeekOrigin.End);
CheckMagic(inputStream.ReadInt32());
inputStream.BaseStream.Skip(-12);
var offset = inputStream.ReadInt64();
inputStream.BaseStream.Skip(-offset - 8);
CheckMagic(inputStream.ReadInt32());
}
Bio.Cout($"Godot Engine version: {inputStream.ReadInt32()}.{inputStream.ReadInt32()}.{inputStream.ReadInt32()}.{inputStream.ReadInt32()}");
// Skip reserved bytes (16x Int32)
inputStream.BaseStream.Skip(16 * 4);
var fileCount = inputStream.ReadInt32();
Bio.Cout($"Found {fileCount} files in package");
Bio.Cout("Reading file index");
var fileIndex = new List <FileEntry>();
for (var i = 0; i < fileCount; i++)
{
var pathLength = inputStream.ReadInt32();
var path = Encoding.UTF8.GetString(inputStream.ReadBytes(pathLength));
var fileEntry = new FileEntry(path.ToString(), inputStream.ReadInt64(), inputStream.ReadInt64());
fileIndex.Add(fileEntry);
Bio.Debug(fileEntry);
inputStream.BaseStream.Skip(16);
//break;
}
if (fileIndex.Count < 1)
{
Bio.Error("No files were found inside the archive", Bio.EXITCODE.RUNTIME_ERROR);
}
fileIndex.Sort((a, b) => (int)(a.offset - b.offset));
var fileIndexEnd = inputStream.BaseStream.Position;
for (var i = 0; i < fileIndex.Count; i++)
{
var fileEntry = fileIndex[i];
Bio.Progress(fileEntry.path, i + 1, fileIndex.Count);
//break;
if (fileEntry.offset < fileIndexEnd)
{
Bio.Warn("Invalid file offset: " + fileEntry.offset);
continue;
}
// TODO: Only PNG compression is supported
if (convertAssets)
{
// https://github.com/godotengine/godot/blob/master/editor/import/resource_importer_texture.cpp#L222
if (fileEntry.path.EndsWith(".stex") && fileEntry.path.Contains(".png"))
{
fileEntry.Resize(32);
fileEntry.ChangeExtension(".stex", ".png");
Bio.Debug(fileEntry);
}
// https://github.com/godotengine/godot/blob/master/core/io/resource_format_binary.cpp#L836
else if (fileEntry.path.EndsWith(".oggstr"))
{
fileEntry.Resize(279, 4);
fileEntry.ChangeExtension(".oggstr", ".ogg");
}
// https://github.com/godotengine/godot/blob/master/scene/resources/audio_stream_sample.cpp#L518
else if (fileEntry.path.EndsWith(".sample"))
{
// TODO
Bio.Warn("The file type '.sample' is currently not supported");
}
}
inputStream.BaseStream.Position = fileEntry.offset;
var destination = Path.Combine(outputDirectory, fileEntry.path);
try {
Action <Stream, Stream> copyFunction = (input, output) => input.Copy(output, (int)fileEntry.size);
inputStream.BaseStream.WriteToFile(destination, PROMPT_ID, copyFunction);
}
catch (Exception e) {
Bio.Error(e);
failed++;
}
}
}
Bio.Cout();
Bio.Cout(failed < 1? "All OK": failed + " files failed to extract");
Bio.Pause();
}