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.internal.TapestryInternalUtils;
020    import org.apache.tapestry5.ioc.Resource;
021    import org.apache.tapestry5.services.Context;
022    import org.apache.tapestry5.services.assets.ContentTypeAnalyzer;
023    
024    public class ContentTypeAnalyzerImpl implements ContentTypeAnalyzer
025    {
026        private final Context context;
027    
028        private final Map<String, String> configuration;
029    
030        public ContentTypeAnalyzerImpl(Context context, Map<String, String> configuration)
031        {
032            this.context = context;
033            this.configuration = configuration;
034        }
035    
036        public String getContentType(Resource resource)
037        {
038            String extension = TapestryInternalUtils.toFileSuffix(resource.getFile());
039    
040            String contentType = configuration.get(extension);
041    
042            if (contentType != null)
043                return contentType;
044    
045            contentType = context.getMimeType(resource.getFile());
046    
047            if (contentType != null)
048                return contentType;
049    
050            return "application/octet-stream";
051        }
052    
053    }