content: /**
   * Copyright 2016 Bartosz Schiller
   * <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
   * <p/>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p/>
   * 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 com.github.barteksc.pdfviewer.util;
  
  import android.content.Context;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  
  public class FileUtils {
  
      private FileUtils() {
          // Prevents instantiation
      }
  
      public static File fileFromAsset(Context context, String assetName) throws IOException {
          File outFile = new File(context.getCacheDir(), assetName + "-pdfview.pdf");
          if (assetName.contains("/")) {
              outFile.getParentFile().mkdirs();
          }
          copy(context.getAssets().open(assetName), outFile);
          return outFile;
      }
  
      public static void copy(InputStream inputStream, File output) throws IOException {
          OutputStream outputStream = null;
          try {
              outputStream = new FileOutputStream(output);
              int read = 0;
              byte[] bytes = new byte[1024];
              while ((read = inputStream.read(bytes)) != -1) {
                  outputStream.write(bytes, 0, read);
              }
          } finally {
              try {
                  if (inputStream != null) {
                      inputStream.close();
                  }
              } finally {
                  if (outputStream != null) {
                      outputStream.close();
                  }
              }
          }
      }
  }
  