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- /* ====================================================================
- 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.xssf.usermodel;
-
- import java.io.File;
- import java.io.IOException;
- import java.io.InputStream;
-
- import org.apache.poi.EncryptedDocumentException;
- import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
- import org.apache.poi.openxml4j.opc.OPCPackage;
- import org.apache.poi.openxml4j.opc.PackageAccess;
- import org.apache.poi.poifs.filesystem.DirectoryNode;
- import org.apache.poi.poifs.filesystem.DocumentFactoryHelper;
- 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.WorkbookProvider;
- import org.apache.poi.util.Internal;
-
- @Internal
- public class XSSFWorkbookFactory implements WorkbookProvider {
-
- @Override
- public boolean accepts(FileMagic fm) {
- return fm == FileMagic.OOXML;
- }
-
- /**
- * Create a new empty Workbook
- *
- * @return The created workbook
- */
- @Override
- public XSSFWorkbook create() {
- return new XSSFWorkbook();
- }
-
- @Override
- public XSSFWorkbook create(DirectoryNode root, String password) throws IOException {
- try (InputStream stream = DocumentFactoryHelper.getDecryptedStream(root, password)) {
- return create(stream);
- // don't close root.getFileSystem() otherwise the container filesystem becomes invalid
- }
- }
-
- @Override
- public Workbook create(InputStream inp, String password) throws IOException {
- InputStream bufInp = FileMagic.prepareToCheckMagic(inp);
- FileMagic fm = FileMagic.valueOf(bufInp);
-
- if (fm == FileMagic.OLE2) {
- try (POIFSFileSystem poifs = new POIFSFileSystem(bufInp);
- InputStream stream = DocumentFactoryHelper.getDecryptedStream(poifs.getRoot(), password)) {
- return create(stream);
- }
- }
-
- if (fm == FileMagic.OOXML) {
- return create(bufInp);
- }
-
- return null;
- }
-
- /**
- * Creates a XSSFWorkbook from the given InputStream
- *
- * <p>Note that in order to properly release resources the
- * Workbook should be closed after use.</p>
- *
- * @param stream The {@link InputStream} to read data from.
- *
- * @return The created Workbook
- *
- * @throws IOException if an error occurs while reading the data
- */
- @SuppressWarnings("resource")
- @Override
- public XSSFWorkbook create(InputStream stream) throws IOException {
- try {
- OPCPackage pkg = OPCPackage.open(stream);
- return createWorkbook(pkg);
- } catch (InvalidFormatException e) {
- throw new IOException(e);
- }
- }
-
- /**
- * Creates a XSSFWorkbook from the given OOXML Package
- *
- * <p>Note that in order to properly release resources the
- * Workbook should be closed after use.</p>
- *
- * @param pkg The {@link OPCPackage} opened for reading data.
- *
- * @return The created Workbook
- *
- * @throws IOException if an error occurs while reading the data
- */
- public static XSSFWorkbook createWorkbook(OPCPackage pkg) throws IOException {
- try {
- return new XSSFWorkbook(pkg);
- } catch (RuntimeException ioe) {
- // ensure that file handles are closed (use revert() to not re-write the file)
- pkg.revert();
- //pkg.close();
-
- // rethrow exception
- throw ioe;
- }
- }
-
- /**
- * Creates the XSSFWorkbook from the given File, which must exist and be readable.
- * <p>Note that in order to properly release resources the Workbook should be closed after use.
- *
- * @param file The file to read data from.
- * @param readOnly If the Workbook should be opened in read-only mode to avoid writing back
- * changes when the document is closed.
- *
- * @return The created Workbook
- *
- * @throws IOException if an error occurs while reading the data
- * @throws EncryptedDocumentException If the wrong password is given for a protected file
- */
- @Override
- @SuppressWarnings("resource")
- public XSSFWorkbook create(File file, String password, boolean readOnly) throws IOException {
- FileMagic fm = FileMagic.valueOf(file);
-
- if (fm == FileMagic.OLE2) {
- try (POIFSFileSystem poifs = new POIFSFileSystem(file, true);
- InputStream stream = DocumentFactoryHelper.getDecryptedStream(poifs.getRoot(), password)) {
- return create(stream);
- }
- }
-
- try {
- OPCPackage pkg = OPCPackage.open(file, readOnly ? PackageAccess.READ : PackageAccess.READ_WRITE);
- return createWorkbook(pkg);
- } catch (InvalidFormatException e) {
- throw new IOException(e);
- }
- }
- }
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