public void PruneEncryptedDirectory(EncryptOptions options, IOutputHandler outputHandler) { outputHandler.WriteVerboseLine(); outputHandler.WriteVerbose("Pruning files"); int count = 0; var fileNames = CreateFileList(options.SourceDir, options.IgnoreFilePath); var validFiles = EncryptOperationFactory.Build(options.SourceDir, fileNames, options.BinaryKey[0], options.Levels).Select(x => x.EncFileName); var validHashes = new HashSet <string>(validFiles.Select(Path.GetFileName)); foreach (var file in _fileSource.GetFilesRecursive(options.DestinationDir)) { var fileName = Path.GetFileName(file); if (!string.IsNullOrWhiteSpace(fileName) && !validHashes.Contains(fileName)) { if (count == 0) { outputHandler.WriteVerboseLine(); } outputHandler.WriteVerboseLine("\t{0}", fileName); File.Delete(file); count++; } } outputHandler.WriteVerboseLine(count == 0 ? " (no files found)" : "Pruned " + count + " files"); }