1 /* 2 * Copyright (C) 2007 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 android.webkit; 18 19 import android.net.http.EventHandler; 20 21 import com.android.internal.R; 22 23 import java.io.ByteArrayInputStream; 24 25 import org.apache.harmony.luni.util.Base64; 26 27 /** 28 * This class is a concrete implementation of StreamLoader that uses the 29 * content supplied as a URL as the source for the stream. The mimetype 30 * optionally provided in the URL is extracted and inserted into the HTTP 31 * response headers. 32 */ 33 class DataLoader extends StreamLoader { 34 35 /** 36 * Constructor uses the dataURL as the source for an InputStream 37 * @param dataUrl data: URL string optionally containing a mimetype 38 * @param loadListener LoadListener to pass the content to 39 */ DataLoader(String dataUrl, LoadListener loadListener)40 DataLoader(String dataUrl, LoadListener loadListener) { 41 super(loadListener); 42 43 String url = dataUrl.substring("data:".length()); 44 byte[] data = null; 45 int commaIndex = url.indexOf(','); 46 if (commaIndex != -1) { 47 String contentType = url.substring(0, commaIndex); 48 data = url.substring(commaIndex + 1).getBytes(); 49 loadListener.parseContentTypeHeader(contentType); 50 if ("base64".equals(loadListener.transferEncoding())) { 51 data = Base64.decode(data); 52 } 53 } else { 54 data = url.getBytes(); 55 } 56 if (data != null) { 57 mDataStream = new ByteArrayInputStream(data); 58 mContentLength = data.length; 59 } 60 } 61 62 @Override setupStreamAndSendStatus()63 protected boolean setupStreamAndSendStatus() { 64 if (mDataStream != null) { 65 mLoadListener.status(1, 1, 200, "OK"); 66 return true; 67 } else { 68 mLoadListener.error(EventHandler.ERROR, 69 mContext.getString(R.string.httpError)); 70 return false; 71 } 72 } 73 74 @Override buildHeaders(android.net.http.Headers h)75 protected void buildHeaders(android.net.http.Headers h) { 76 } 77 } 78