| /* ==================================================================== |
| 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.hssf.usermodel; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.apache.poi.hssf.record.crypto.Biff8EncryptionKey; |
| import org.apache.poi.poifs.filesystem.DirectoryNode; |
| import org.apache.poi.poifs.filesystem.FileMagic; |
| import org.apache.poi.poifs.filesystem.POIFSFileSystem; |
| import org.apache.poi.ss.usermodel.Workbook; |
| import org.apache.poi.ss.usermodel.WorkbookFactory; |
| import org.apache.poi.ss.usermodel.WorkbookProvider; |
| import org.apache.poi.util.Internal; |
| |
| /** |
| * Helper class which is instantiated by reflection from |
| * {@link WorkbookFactory#create(java.io.File)} and similar |
| */ |
| @SuppressWarnings("unused") |
| @Internal |
| public class HSSFWorkbookFactory implements WorkbookProvider { |
| |
| @Override |
| public boolean accepts(FileMagic fm) { |
| return FileMagic.OLE2 == fm; |
| } |
| |
| /** |
| * Create a new empty Workbook |
| * |
| * @return The created workbook |
| */ |
| public HSSFWorkbook create() { |
| return new HSSFWorkbook(); |
| } |
| |
| /** |
| * Creates a HSSFWorkbook from the given {@link POIFSFileSystem}<p> |
| * Note that in order to properly release resources the |
| * Workbook should be closed after use. |
| */ |
| public static HSSFWorkbook createWorkbook(final POIFSFileSystem fs) throws IOException { |
| return new HSSFWorkbook(fs); |
| } |
| |
| /** |
| * Creates a HSSFWorkbook from the given DirectoryNode<p> |
| * Note that in order to properly release resources the |
| * Workbook should be closed after use. |
| */ |
| public HSSFWorkbook create(final DirectoryNode root, String password) throws IOException { |
| boolean passwordSet = false; |
| if (password != null) { |
| Biff8EncryptionKey.setCurrentUserPassword(password); |
| passwordSet = true; |
| } |
| try { |
| return new HSSFWorkbook(root, true); |
| } finally { |
| if (passwordSet) { |
| Biff8EncryptionKey.setCurrentUserPassword(null); |
| } |
| } |
| } |
| |
| @Override |
| public Workbook create(InputStream inp) throws IOException { |
| return create(inp, null); |
| } |
| |
| @Override |
| public Workbook create(InputStream inp, String password) throws IOException { |
| POIFSFileSystem fs = new POIFSFileSystem(inp); |
| return create(fs.getRoot(), password); |
| } |
| |
| @Override |
| public Workbook create(File file, String password, boolean readOnly) throws IOException { |
| boolean passwordSet = false; |
| if (password != null) { |
| Biff8EncryptionKey.setCurrentUserPassword(password); |
| passwordSet = true; |
| } |
| try { |
| POIFSFileSystem fs = new POIFSFileSystem(file, readOnly); |
| try { |
| return new HSSFWorkbook(fs, true); |
| } catch (RuntimeException e) { |
| // we need to close the filesystem |
| // if we encounter an exception to |
| // not leak file handles |
| fs.close(); |
| |
| throw e; |
| } |
| } finally { |
| if (passwordSet) { |
| Biff8EncryptionKey.setCurrentUserPassword(null); |
| } |
| } |
| } |
| } |