| /* ==================================================================== |
| 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.openxml4j.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Enumeration; |
| |
| import org.apache.commons.compress.archivers.zip.ZipArchiveEntry; |
| import org.apache.commons.compress.archivers.zip.ZipFile; |
| |
| /** |
| * A ZipEntrySource wrapper around a ZipFile. |
| * Should be as low in terms of memory as a |
| * normal ZipFile implementation is. |
| */ |
| public class ZipFileZipEntrySource implements ZipEntrySource { |
| private ZipFile zipArchive; |
| public ZipFileZipEntrySource(ZipFile zipFile) { |
| this.zipArchive = zipFile; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| if(zipArchive != null) { |
| zipArchive.close(); |
| } |
| zipArchive = null; |
| } |
| |
| @Override |
| public boolean isClosed() { |
| return (zipArchive == null); |
| } |
| |
| @Override |
| public Enumeration<? extends ZipArchiveEntry> getEntries() { |
| if (zipArchive == null) |
| throw new IllegalStateException("Zip File is closed"); |
| |
| return zipArchive.getEntries(); |
| } |
| |
| @Override |
| public InputStream getInputStream(ZipArchiveEntry entry) throws IOException { |
| if (zipArchive == null) |
| throw new IllegalStateException("Zip File is closed"); |
| |
| return zipArchive.getInputStream(entry); |
| } |
| |
| @Override |
| public ZipArchiveEntry getEntry(final String path) { |
| String normalizedPath = path.replace('\\', '/'); |
| |
| final ZipArchiveEntry entry = zipArchive.getEntry(normalizedPath); |
| if (entry != null) { |
| return entry; |
| } |
| |
| // the opc spec allows case-insensitive filename matching (see #49609) |
| final Enumeration<ZipArchiveEntry> zipArchiveEntryEnumeration = zipArchive.getEntries(); |
| while (zipArchiveEntryEnumeration.hasMoreElements()) { |
| ZipArchiveEntry ze = zipArchiveEntryEnumeration.nextElement(); |
| if (normalizedPath.equalsIgnoreCase(ze.getName().replace('\\','/'))) { |
| return ze; |
| } |
| } |
| |
| return null; |
| } |
| } |