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 libcore.content.type.MimeMap; 20 21 /** 22 * Implements {@link FileNameMap} in terms of {@link MimeMap}. 23 */ 24 class DefaultFileNameMap implements FileNameMap { 25 getContentTypeFor(String filename)26 public String getContentTypeFor(String filename) { 27 int fragmentIndex = filename.indexOf('#'); 28 if (fragmentIndex >= 0) { 29 filename = filename.substring(0, fragmentIndex); 30 } 31 if (filename.endsWith("/")) { // a directory 32 return "text/html"; 33 } 34 35 int slashIndex = filename.lastIndexOf('/'); 36 if (slashIndex >= 0) { 37 filename = filename.substring(slashIndex); 38 } 39 40 MimeMap mimeMap = MimeMap.getDefault(); 41 int dotIndex = -1; 42 do { 43 String ext = filename.substring(dotIndex + 1); 44 String result = mimeMap.guessMimeTypeFromExtension(ext); 45 if ((result != null) && 46 // Compat behavior: If there's a '/', then extension must not be the 47 // whole string. http://b/144977800 48 (slashIndex < 0 || dotIndex >= 0)) { 49 return result; 50 } 51 dotIndex = filename.indexOf('.', dotIndex + 1); 52 } while (dotIndex >= 0); 53 return null; 54 } 55 } 56