addFile method
Implementation
@override
Future<void> addFile(File file, [String? filename, int? level = GZIP]) async {
var file_stream = InputFileStream(file.path);
var archiveFile = ArchiveFile.stream(
filename ?? path.basename(file.path), file.lengthSync(), file_stream);
if (level == STORE) {
archiveFile.compress = false;
}
archiveFile.lastModTime = file.lastModifiedSync().millisecondsSinceEpoch;
archiveFile.mode = file.statSync().mode;
_encoder.addFile(archiveFile);
await file_stream.close();
}