001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 */
017package org.apache.xbean.finder.util;
018
019import org.apache.xbean.finder.archive.FileArchive;
020
021import java.io.File;
022import java.net.MalformedURLException;
023import java.net.URL;
024
025public final class Files {
026    public static File toFile(final URL url) {
027        if ("jar".equals(url.getProtocol())) {
028            try {
029                final String spec = url.getFile();
030                final int separator = spec.indexOf('!');
031                if (separator == -1) {
032                    return null;
033                }
034                return toFile(new URL(spec.substring(0, separator + 1)));
035            } catch (final MalformedURLException e) {
036                return null;
037            }
038        } else if ("file".equals(url.getProtocol())) {
039            String path = FileArchive.decode(url.getFile());
040            if (path.endsWith("!")) {
041                path = path.substring(0, path.length() - 1);
042            }
043            return new File(path);
044        }
045        return null;
046    }
047
048    private Files() {
049        // no-op
050    }
051}