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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package java.net;
     18 
     19 import java.util.Locale;
     20 import libcore.net.MimeUtils;
     21 
     22 /**
     23  * Implements {@link FileNameMap} in terms of {@link libcore.net.MimeUtils}.
     24  */
     25 class DefaultFileNameMap implements FileNameMap {
     26     public String getContentTypeFor(String filename) {
     27         if (filename.endsWith("/")) {
     28             // a directory, return html
     29             return MimeUtils.guessMimeTypeFromExtension("html");
     30         }
     31         int lastCharInExtension = filename.lastIndexOf('#');
     32         if (lastCharInExtension < 0) {
     33             lastCharInExtension = filename.length();
     34         }
     35         int firstCharInExtension = filename.lastIndexOf('.') + 1;
     36         String ext = "";
     37         if (firstCharInExtension > filename.lastIndexOf('/')) {
     38             ext = filename.substring(firstCharInExtension, lastCharInExtension);
     39         }
     40         return MimeUtils.guessMimeTypeFromExtension(ext.toLowerCase(Locale.US));
     41     }
     42 }
     43