code: /**
   * This file is part of Eclipse Steady.
   *
   * Licensed 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.
   *
   * SPDX-License-Identifier: Apache-2.0
   * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
   */
  package org.eclipse.steady.java;
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.file.Path;
  import java.util.jar.JarFile;
  
  import javax.annotation.concurrent.NotThreadSafe;
  
  import org.apache.logging.log4j.Logger;
  import org.eclipse.steady.FileAnalysisException;
  import org.eclipse.steady.shared.util.FileUtil;
  
  /**
   * <p>AarAnalyzer class.</p>
   */
  @NotThreadSafe
  public class AarAnalyzer extends JarAnalyzer {
  
    private static final Logger log =
        org.apache.logging.log4j.LogManager.getLogger(AarAnalyzer.class);
  
    private static final String CLASSES_JAR = "classes.jar";
  
    // private JarFile aar;
    private JarWriter aarWriter;
  
    private Path tmpDir = null; // To where the AAR is extracted
  
    /** {@inheritDoc} */
    @Override
    public String[] getSupportedFileExtensions() {
      return new String[] {"aar"};
    }
  
    /** {@inheritDoc} */
    @Override
    public synchronized void analyze(final File _file) throws FileAnalysisException {
      try {
        // this.aar = new JarFile(_file, false, java.util.zip.ZipFile.OPEN_READ);
        this.aarWriter = new JarWriter(_file.toPath());
        this.url = _file.getAbsolutePath().toString();
  
        try {
          this.tmpDir = java.nio.file.Files.createTempDirectory("aar_analysis_");
        } catch (IOException e) {
          throw new IllegalStateException("Unable to create temp directory", e);
        }
  
        this.aarWriter.extract(this.tmpDir);
  
        // TODO: What if no classes.jar
        final File classes_jar = this.tmpDir.resolve(CLASSES_JAR).toFile();
        if (classes_jar != null && FileUtil.isAccessibleFile(classes_jar.toPath())) {
          JarAnalyzer.insertClasspath(classes_jar.toPath().toAbsolutePath().toString());
          this.jar = new JarFile(classes_jar, false, java.util.zip.ZipFile.OPEN_READ);
          this.jarWriter = new JarWriter(classes_jar.toPath());
        } else {
          log.warn("No " + CLASSES_JAR + " found in [" + _file.toPath().toAbsolutePath() + "]");
        }
      } catch (IllegalStateException e) {
        log.error("IllegalStateException when analyzing file [" + _file + "]: " + e.getMessage());
        throw new FileAnalysisException(
            "Error when analyzing file [" + _file + "]: " + e.getMessage(), e);
      } catch (IOException e) {
        log.error("IOException when analyzing file [" + _file + "]: " + e.getMessage());
        throw new FileAnalysisException(
            "Error when analyzing file [" + _file + "]: " + e.getMessage(), e);
      } catch (Exception e) {
        log.error("Exception when analyzing file [" + _file + "]: " + e.getMessage());
        throw new FileAnalysisException(
            "Error when analyzing file [" + _file + "]: " + e.getMessage(), e);
      }
    }
  
    /**
     * {@inheritDoc}
     *
     * Returns the SHA1 digest of the AAR by computing it on the fly.
     */
    @Override
    public synchronized String getSHA1() {
      return this.aarWriter.getSHA1();
    }
  
    /**
     * <p>getFileName.</p>
     *
     * @return a {@link java.lang.String} object.
     */
    public String getFileName() {
      return this.aarWriter.getOriginalJarFileName().toString(); // + "!" + CLASSES_JAR;
    }
  }
  