001    // Copyright 2011 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    // http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.internal.services.assets;
016    
017    import java.util.Map;
018    
019    import org.apache.tapestry5.services.assets.CompressionAnalyzer;
020    
021    public class CompressionAnalyzerImpl implements CompressionAnalyzer
022    {
023        private final Map<String, Boolean> configuration;
024    
025        public CompressionAnalyzerImpl(Map<String, Boolean> configuration)
026        {
027            this.configuration = configuration;
028        }
029    
030        public boolean isCompressable(String contentType)
031        {
032            assert contentType != null;
033    
034            int x = contentType.indexOf(';');
035    
036            String key = x < 0 ? contentType : contentType.substring(0, x);
037    
038            Boolean result = configuration.get(key);
039    
040            return result == null ? true : result.booleanValue();
041        }
042    }