private void DoExtract( IPreprocessingStepCallback callback, string specificFileToExtract, Func <PreprocessingStepParams, bool> onNext, string password) { using (var zipFile = new ICSharpCode.SharpZipLib.Zip.ZipFile(@params.Location)) { if (password != null) { zipFile.Password = password; } var entriesToEnum = specificFileToExtract != null? Enumerable.Repeat(zipFile.GetEntry(specificFileToExtract), 1) : zipFile.OfType <ICSharpCode.SharpZipLib.Zip.ZipEntry>(); foreach (var entry in entriesToEnum.Where(e => e != null)) { if (entry.IsDirectory) { continue; } if (entry.IsCrypted && password == null) { throw new PasswordException(); } string entryFullPath = @params.FullPath + "\\" + entry.Name; string tmpFileName = callback.TempFilesManager.GenerateNewName(); callback.SetStepDescription("Unpacking " + entryFullPath); using (FileStream tmpFs = new FileStream(tmpFileName, FileMode.CreateNew)) using (var entryProgress = progressAggregator.CreateProgressSink()) { using (var entryStream = zipFile.GetInputStream(entry)) { var totalLen = entry.Size; IOUtils.CopyStreamWithProgress(entryStream, tmpFs, pos => { if (totalLen > 0) { callback.SetStepDescription($"Unpacking {pos * 100 / totalLen}%: {entryFullPath}"); entryProgress.SetValue((double)pos / totalLen); } }, callback.Cancellation); } } if (!onNext(new PreprocessingStepParams(tmpFileName, entryFullPath, @params.PreprocessingHistory.Add(new PreprocessingHistoryItem(name, entry.Name))))) { break; } } } }