/*

  * 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.any23.source;

 import java.io.ByteArrayOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 /**

  * Creates local copies of {@link DocumentSource} by

  * reading them into an in-memory buffer. This allows opening

  * several input streams over the content at lower cost.

  *

  * @author Richard Cyganiak (richard@cyganiak.de)

  */

 public class MemCopyFactory implements LocalCopyFactory {

     private static final int TEMP_SIZE = 10000;

     public static byte[] toByteArray(InputStream in) throws IOException {

         ByteArrayOutputStream out = new ByteArrayOutputStream();

         byte[] temp = new byte[TEMP_SIZE];

         while (true) {

             int bytes = in.read(temp);

             if (bytes == -1) break;

             out.write(temp, 0, bytes);

         }

         return out.toByteArray();

     }

     public DocumentSource createLocalCopy(final DocumentSource in) throws IOException {

         return new ByteArrayDocumentSource(in.openInputStream(), in.getDocumentURI(), in.getContentType());

     }

 }