| /* |
| * 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.rat.walker; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FilenameFilter; |
| import java.io.IOException; |
| |
| import org.apache.commons.compress.archivers.ArchiveEntry; |
| import org.apache.commons.compress.archivers.ArchiveInputStream; |
| import org.apache.commons.compress.archivers.tar.TarArchiveInputStream; |
| import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream; |
| import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream; |
| import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream; |
| import org.apache.rat.api.Document; |
| import org.apache.rat.api.RatException; |
| import org.apache.rat.document.impl.ArchiveEntryDocument; |
| import org.apache.rat.report.IReportable; |
| import org.apache.rat.report.RatReport; |
| |
| /** |
| * Walks various kinds of archives files |
| */ |
| public class ArchiveWalker extends Walker implements IReportable { |
| |
| /** |
| * Constructs a walker. |
| * @param file not null |
| * @param filter filters input files (optional), |
| * or null when no filtering should be performed |
| * @throws FileNotFoundException in case of I/O errors. |
| */ |
| public ArchiveWalker(File file, final FilenameFilter filter) throws FileNotFoundException { |
| super(file, filter); |
| } |
| |
| /** |
| * Run a report over all files and directories in this GZIPWalker, |
| * ignoring any files/directories set to be ignored. |
| * |
| * @param report the defined RatReport to run on this GZIP walker. |
| * |
| */ |
| public void run(final RatReport report) throws RatException { |
| |
| try { |
| ArchiveInputStream input; |
| |
| /* I am really sad that classes aren't first-class objects in |
| Java :'( */ |
| try { |
| input = new TarArchiveInputStream(new GzipCompressorInputStream(new FileInputStream(file))); |
| } catch (IOException e) { |
| try { |
| input = new TarArchiveInputStream(new BZip2CompressorInputStream(new FileInputStream(file))); |
| } catch (IOException e2) { |
| input = new ZipArchiveInputStream(new FileInputStream(file)); |
| } |
| } |
| |
| ArchiveEntry entry = input.getNextEntry(); |
| while (entry != null) { |
| File f = new File(entry.getName()); |
| byte[] contents = new byte[(int) entry.getSize()]; |
| int offset = 0; |
| int length = contents.length; |
| |
| while (offset < entry.getSize()) { |
| int actualRead = input.read(contents, offset, length); |
| length -= actualRead; |
| offset += actualRead; |
| } |
| |
| if (!entry.isDirectory() && !ignored(f)) { |
| report(report, contents, f); |
| } |
| |
| entry = input.getNextEntry(); |
| } |
| |
| input.close(); |
| } catch (IOException e) { |
| throw new RatException(e); |
| } |
| } |
| |
| /** |
| * Report on the given file. |
| * |
| * @param report the report to process the file with |
| * @param file the file to be reported on |
| * @throws RatException |
| */ |
| private void report(final RatReport report, byte[] contents, File file) throws RatException { |
| |
| Document document = new ArchiveEntryDocument(file, contents); |
| report.report(document); |
| |
| } |
| } |