12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758 |
- /* ====================================================================
- Licensed to the Apache Software Foundation (ASF) under one or more
- contributor license agreements. See the NOTICE file distributed with
- this work for additional information regarding copyright ownership.
- The ASF licenses this file to You under the Apache License, Version 2.0
- (the "License"); you may not use this file except in compliance with
- the License. You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
- ==================================================================== */
- package org.apache.poi.poifs.filesystem;
-
- import org.apache.logging.log4j.LogManager;
- import org.apache.logging.log4j.Logger;
- import org.apache.poi.poifs.nio.FileBackedDataSource;
- import org.apache.poi.util.Beta;
- import org.apache.poi.util.TempFile;
-
- import java.io.File;
- import java.io.IOException;
-
- /**
- * An experimental POIFSFileSystem to support the encryption of large files
- *
- * @since 4.1.1
- */
- @Beta
- public class TempFilePOIFSFileSystem extends POIFSFileSystem {
- private static final Logger LOG = LogManager.getLogger(TempFilePOIFSFileSystem.class);
- File tempFile;
-
- @Override
- protected void createNewDataSource() {
- try {
- tempFile = TempFile.createTempFile("poifs", ".tmp");
- _data = new FileBackedDataSource(tempFile, false);
- } catch (IOException e) {
- throw new IllegalStateException("Failed to create data source", e);
- }
- }
-
- @Override
- public void close() throws IOException {
- if (tempFile != null && tempFile.exists()) {
- if (!tempFile.delete()) {
- LOG.atDebug().log("temp file was already deleted (probably due to previous call to close this resource)");
- }
- }
- super.close();
- }
-
- }
|