001/*
002 *  Copyright 2012 Chris Pheby
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.jadira.scanner.file.locator;
017
018import java.io.File;
019import java.net.MalformedURLException;
020import java.net.URL;
021import java.util.ArrayList;
022import java.util.List;
023import java.util.StringTokenizer;
024
025import org.jadira.scanner.core.api.Locator;
026import org.jadira.scanner.core.exception.ClasspathAccessException;
027
028/**
029 * Uses the java.class.path system property to obtain a list of URLs that represent the
030 * CLASSPATH
031 */
032public class JavaClasspathUrlLocator implements Locator<URL> {
033    
034        @Override
035        public List<URL> locate() {
036
037        List<URL> list = new ArrayList<URL>();
038        String classpath = System.getProperty("java.class.path");
039        StringTokenizer tokenizer = new StringTokenizer(classpath, File.pathSeparator);
040
041        while (tokenizer.hasMoreTokens()) {
042            
043                String path = tokenizer.nextToken();
044            
045            File fp = new File(path);
046            if (!fp.exists()) {
047                throw new ClasspathAccessException("File in java.class.path does not exist: " + fp);
048            }
049            
050            try {
051                list.add(fp.toURI().toURL());
052            } catch (MalformedURLException e) {
053                throw new ClasspathAccessException("URL was invalid: " + fp.toURI().toString(), e);
054            }
055        }
056        return list;
057    }
058}
059