code: /*
   * Copyright © 2014-2017 EntIT Software LLC, a Micro Focus company (L.P.)
   *
   * 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.
   */
  
  package io.cloudslang.dependency.impl.services.utils;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipInputStream;
  
  public class UnzipUtil {
  
      private static final int DEFAULT_BUFFER_SIZE = 2048;
  
      public static void unzipToFolder(String folderPath, InputStream source) {
          byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
          File mavenHome = new File(folderPath);
          if(!mavenHome.exists()) {
              try (ZipInputStream zio = new ZipInputStream(source)) {
                  ZipEntry ze;
                  while ((ze = zio.getNextEntry()) != null) {
                      if(ze.isDirectory()) {
                          new File(mavenHome, ze.getName()).mkdirs();
                      } else {
                          try (FileOutputStream fos = new FileOutputStream(new File(mavenHome, ze.getName()))) {
                              int len;
                              while ((len = zio.read(buffer)) > 0)
                              {
                                  fos.write(buffer, 0, len);
                              }
                          }
                      }
                  }
              } catch (IOException e) {
                  e.printStackTrace();
              }
          }
      }
  }
  