| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.harmony.luni.internal.net.www.protocol.file; |
| |
| import java.io.IOException; |
| import java.net.Proxy; |
| import java.net.URL; |
| import java.net.URLConnection; |
| import java.net.URLStreamHandler; |
| |
| import org.apache.harmony.luni.util.Msg; |
| |
| /** |
| * This is the handler that is responsible for reading files from the file |
| * system. |
| */ |
| public class Handler extends URLStreamHandler { |
| |
| /** |
| * Answers a connection to the a file pointed by this <code>URL</code> in |
| * the file system |
| * |
| * @return A connection to the resource pointed by this url. |
| * @param url |
| * URL The URL to which the connection is pointing to |
| * |
| */ |
| @Override |
| public URLConnection openConnection(URL url) throws IOException { |
| return openConnection(url, null); |
| } |
| |
| /** |
| * The behaviour of this method is the same as openConnection(URL). |
| * <code>proxy</code> is not used in FileURLConnection. |
| * |
| * @param url |
| * the URL which the connection is pointing to |
| * @param proxy |
| * Proxy |
| * @return a connection to the resource pointed by this url. |
| * |
| * @throws IOException |
| * if this handler fails to establish a connection. |
| * @throws IllegalArgumentException |
| * if the url argument is null. |
| * @throws UnsupportedOperationException |
| * if the protocol handler doesn't support this method. |
| */ |
| @Override |
| public URLConnection openConnection(URL url, Proxy proxy) |
| throws IOException { |
| if (null == url) { |
| // K034b=url and proxy can not be null |
| throw new IllegalArgumentException(Msg.getString("K034b")); //$NON-NLS-1$ |
| } |
| |
| String host = url.getHost(); |
| if (host == null || host.length() == 0 |
| || host.equalsIgnoreCase("localhost")) { //$NON-NLS-1$ |
| return new FileURLConnection(url); |
| } |
| |
| // If a hostname is specified try to get the resource using FTP |
| URL ftpURL = new URL("ftp", host, url.getFile()); //$NON-NLS-1$ |
| return (proxy == null) ? ftpURL.openConnection() : ftpURL |
| .openConnection(proxy); |
| } |
| |
| /** |
| * Parse the <code>string</code>str into <code>URL</code> u which |
| * already have the context properties. The string generally have the |
| * following format: <code><center>/c:/windows/win.ini</center></code>. |
| * |
| * @param u |
| * The URL object that's parsed into |
| * @param str |
| * The string equivalent of the specification URL |
| * @param start |
| * The index in the spec string from which to begin parsing |
| * @param end |
| * The index to stop parsing |
| * |
| * @see java.net.URLStreamHandler#toExternalForm(URL) |
| * @see java.net.URL |
| */ |
| @Override |
| protected void parseURL(URL u, String str, int start, int end) { |
| if (end < start) { |
| return; |
| } |
| String parseString = ""; //$NON-NLS-1$ |
| if (start < end) { |
| parseString = str.substring(start, end).replace('\\', '/'); |
| } |
| super.parseURL(u, parseString, 0, parseString.length()); |
| } |
| } |