M7350/base/core/java/android/webkit/DataLoader.java

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2024-09-09 08:52:07 +00:00
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.webkit;
import android.net.http.EventHandler;
import com.android.internal.R;
import java.io.ByteArrayInputStream;
import org.apache.harmony.luni.util.Base64;
/**
* This class is a concrete implementation of StreamLoader that uses the
* content supplied as a URL as the source for the stream. The mimetype
* optionally provided in the URL is extracted and inserted into the HTTP
* response headers.
*/
class DataLoader extends StreamLoader {
/**
* Constructor uses the dataURL as the source for an InputStream
* @param dataUrl data: URL string optionally containing a mimetype
* @param loadListener LoadListener to pass the content to
*/
DataLoader(String dataUrl, LoadListener loadListener) {
super(loadListener);
String url = dataUrl.substring("data:".length());
byte[] data = null;
int commaIndex = url.indexOf(',');
if (commaIndex != -1) {
String contentType = url.substring(0, commaIndex);
data = url.substring(commaIndex + 1).getBytes();
loadListener.parseContentTypeHeader(contentType);
if ("base64".equals(loadListener.transferEncoding())) {
data = Base64.decode(data);
}
} else {
data = url.getBytes();
}
if (data != null) {
mDataStream = new ByteArrayInputStream(data);
mContentLength = data.length;
}
}
@Override
protected boolean setupStreamAndSendStatus() {
if (mDataStream != null) {
mLoadListener.status(1, 1, 200, "OK");
return true;
} else {
mLoadListener.error(EventHandler.ERROR,
mContext.getString(R.string.httpError));
return false;
}
}
@Override
protected void buildHeaders(android.net.http.Headers h) {
}
}