/*

  * 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.encoding;

 import org.apache.tika.parser.txt.CharsetDetector;

 import org.apache.tika.parser.txt.CharsetMatch;

 import java.io.BufferedInputStream;

 import java.io.IOException;

 import java.io.InputStream;

 /**

  * An implementation of {@link EncodingDetector} based on

  * <a href="http://tika.apache.org/">Apache Tika</a>.

  *

  * @author Michele Mostarda ( michele.mostarda@gmail.com )

  * @author Davide Palmisano ( dpalmisano@gmail.com )

  * @version $Id$

  */

 public class TikaEncodingDetector implements EncodingDetector {

     public String guessEncoding(InputStream is) throws IOException {

         CharsetDetector charsetDetector = new CharsetDetector();

         charsetDetector.setText( is instanceof BufferedInputStream ? is : new BufferedInputStream(is) );

         charsetDetector.enableInputFilter(true);

         CharsetMatch cm = charsetDetector.detect();

         return cm.getName();

     }

 }