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1   package org.apache.maven.archetype.common.util;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import com.ibm.icu.text.CharsetDetector;
23  import com.ibm.icu.text.CharsetMatch;
24  import org.codehaus.plexus.logging.AbstractLogEnabled;
25  
26  import java.io.BufferedInputStream;
27  import java.io.File;
28  import java.io.FileInputStream;
29  import java.io.IOException;
30  import java.io.InputStream;
31  import java.util.Locale;
32  
33  /**
34   * @author rafale
35   */
36  public class FileCharsetDetector
37      extends AbstractLogEnabled
38  {
39      private final String charset;
40  
41      public FileCharsetDetector( File detectedFile )
42          throws IOException
43      {
44          try ( FileInputStream fileInputStream = new FileInputStream( detectedFile );
45                BufferedInputStream is = new BufferedInputStream( fileInputStream ) )
46          {
47              CharsetDetector detector = new CharsetDetector();
48              detector.setText( is );
49              CharsetMatch match = detector.detect();
50  
51              charset = match.getName().toUpperCase( Locale.ENGLISH );
52          }
53      }
54  
55  
56  
57      public FileCharsetDetector( InputStream detectedStream )
58          throws IOException
59      {
60          CharsetDetector detector = new CharsetDetector();
61          detector.setText( detectedStream );
62          CharsetMatch match = detector.detect();
63  
64          charset = match.getName().toUpperCase( Locale.ENGLISH );
65      }
66  
67      public String getCharset()
68      {
69          return charset;
70      }
71  
72      public boolean isFound()
73      {
74          return true;
75      }
76  }