revToRmlFiles function

RmlExportedProject? revToRmlFiles(Uint8List revBytes)

Converts the bytes of a .rev file into main.rml's markup plus the files it references with file=: scripts and shaders with their source, binary assets as byteless files that only name them. Returns null when the bytes are not a readable .rev or markupAvailable is false.

No file lands on the path main.rml or in a top-level folder named builtins or main.rml; one that would gets another name (builtins_2/…).

Implementation

RmlExportedProject? revToRmlFiles(Uint8List revBytes) {
  if (!markupAvailable || revBytes.isEmpty) {
    return null;
  }
  final source = calloc<Uint8>(revBytes.length);
  final response = calloc<_RmlExportFilesResponseStruct>();
  try {
    source.asTypedList(revBytes.length).setAll(0, revBytes);
    final ok = _revToRmlFiles(source, revBytes.length, response);
    if (!ok || response.ref.data == nullptr || response.ref.size <= 0) {
      return null;
    }
    // Views over native memory; copy them out before freeing.
    final rml = utf8.decode(
      response.ref.data.asTypedList(response.ref.size),
      allowMalformed: true,
    );
    // Native always sends a bundle, at least its count; none means the copy
    // out failed.
    if (response.ref.files == nullptr || response.ref.filesSize <= 0) {
      return null;
    }
    final bundle = Uint8List.fromList(
      response.ref.files.asTypedList(response.ref.filesSize),
    );
    try {
      return RmlExportedProject(
        rml: rml,
        files: decodeRmlExportedFiles(bundle),
      );
    } on FormatException {
      return null;
    }
  } finally {
    _freeRmlExportFiles(response);
    calloc.free(response);
    calloc.free(source);
  }
}