99 lines
3.2 KiB
Java
99 lines
3.2 KiB
Java
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.webkit;
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import android.net.http.EventHandler;
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import android.net.http.Headers;
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import android.net.Uri;
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/**
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* This class is a concrete implementation of StreamLoader that loads
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* "content:" URIs
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*/
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class ContentLoader extends StreamLoader {
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private String mUrl;
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private String mContentType;
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/**
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* Construct a ContentLoader with the specified content URI
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*
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* @param rawUrl "content:" url pointing to content to be loaded. This url
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* is the same url passed in to the WebView.
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* @param loadListener LoadListener to pass the content to
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*/
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ContentLoader(String rawUrl, LoadListener loadListener) {
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super(loadListener);
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/* strip off mimetype */
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int mimeIndex = rawUrl.lastIndexOf('?');
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if (mimeIndex != -1) {
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mUrl = rawUrl.substring(0, mimeIndex);
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mContentType = rawUrl.substring(mimeIndex + 1);
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} else {
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mUrl = rawUrl;
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}
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}
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private String errString(Exception ex) {
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String exMessage = ex.getMessage();
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String errString = mContext.getString(
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com.android.internal.R.string.httpErrorFileNotFound);
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if (exMessage != null) {
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errString += " " + exMessage;
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}
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return errString;
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}
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@Override
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protected boolean setupStreamAndSendStatus() {
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Uri uri = Uri.parse(mUrl);
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if (uri == null) {
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mLoadListener.error(
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EventHandler.FILE_NOT_FOUND_ERROR,
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mContext.getString(
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com.android.internal.R.string.httpErrorBadUrl) +
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" " + mUrl);
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return false;
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}
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try {
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mDataStream = mContext.getContentResolver().openInputStream(uri);
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mLoadListener.status(1, 1, 200, "OK");
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} catch (java.io.FileNotFoundException ex) {
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mLoadListener.error(EventHandler.FILE_NOT_FOUND_ERROR, errString(ex));
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return false;
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} catch (RuntimeException ex) {
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// readExceptionWithFileNotFoundExceptionFromParcel in DatabaseUtils
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// can throw a serial of RuntimeException. Catch them all here.
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mLoadListener.error(EventHandler.FILE_ERROR, errString(ex));
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return false;
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}
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return true;
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}
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@Override
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protected void buildHeaders(Headers headers) {
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if (mContentType != null) {
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headers.setContentType("text/html");
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}
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// content can change, we don't want WebKit to cache it
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headers.setCacheControl("no-store, no-cache");
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}
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}
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