    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
    015package org.apache.tapestry5.internal.services.assets;
    016
    017import java.util.Map;
    018
    019import org.apache.tapestry5.commons.Resource;
    020import org.apache.tapestry5.http.services.Context;
    021import org.apache.tapestry5.internal.TapestryInternalUtils;
    022import org.apache.tapestry5.services.assets.ContentTypeAnalyzer;
    023
    024public 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}