| /* |
| * 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.photark.upload; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.ArrayList; |
| import java.util.Date; |
| import java.util.List; |
| |
| import org.apache.commons.compress.archivers.ArchiveEntry; |
| import org.apache.commons.compress.archivers.ArchiveException; |
| import org.apache.commons.compress.archivers.ArchiveInputStream; |
| import org.apache.commons.compress.archivers.ArchiveStreamFactory; |
| import org.apache.commons.io.IOUtils; |
| import org.apache.photark.Image; |
| |
| public class ArchiveFileExtractor { |
| private String entryTypes[]; |
| |
| public ArchiveFileExtractor(String[] entryTypes) { |
| this.entryTypes = entryTypes; |
| } |
| |
| public List<Image> extractArchive(InputStream inStream) { |
| ArchiveStreamFactory streamFactory = new ArchiveStreamFactory(); |
| List<Image> pictures = new ArrayList<Image>(); |
| try { |
| ArchiveInputStream archiveInputStream = streamFactory.createArchiveInputStream(inStream); |
| ArchiveEntry entry = null; |
| while ((entry = archiveInputStream.getNextEntry()) != null) { |
| if (!entry.isDirectory() && isEntryTypeAllowd(entry)) { |
| byte buf[] = IOUtils.toByteArray(archiveInputStream); |
| InputStream inputStream = new ByteArrayInputStream(buf); |
| Image picture = new Image(entry.getName(), new Date(), inputStream); |
| pictures.add(picture); |
| } |
| } |
| } catch (ArchiveException e) { |
| e.printStackTrace(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| return pictures; |
| } |
| |
| /** |
| * Test whether this stream is of archive type or not |
| * |
| * @param inStream InputStream |
| * @return boolean |
| */ |
| public boolean isArchive(InputStream inStream) { |
| ArchiveStreamFactory streamFactory = new ArchiveStreamFactory(); |
| try { |
| streamFactory.createArchiveInputStream(inStream); |
| return true; |
| } catch (ArchiveException e) { |
| e.printStackTrace(); |
| } |
| return false; |
| } |
| |
| /** |
| * Test weather the extension of given entry is allowed or not |
| * |
| * @param entry ArchiveEntry |
| * @return boolean |
| */ |
| private boolean isEntryTypeAllowd(ArchiveEntry entry) { |
| String entryName = entry.getName(); |
| for (String entryType : entryTypes) { |
| if (entryName.endsWith(entryType)) |
| return true; |
| } |
| return false; |
| } |
| } |