ImporterFinder.java

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/*
 * Copyright (c) 2014, Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 *
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 *    the documentation and/or other materials provided with the distribution.
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 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package eu.mihosoft.vrl.v3d.ext.openjfx.importers;
 
import java.io.File;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;
 
// TODO: Auto-generated Javadoc
public class ImporterFinder {
 
    public URLClassLoader addUrlToClassPath() {
        final Class<?> referenceClass = ImporterFinder.class;
        final URL url = referenceClass.getProtectionDomain().getCodeSource().getLocation();
 
        File libDir = null;
        try {
            File currentDir = new File(url.toURI()).getParentFile();
            libDir = new File(currentDir, "lib");
        } catch (URISyntaxException ue) {
            ue.printStackTrace();
            throw new RuntimeException("Could not import library. Failed to determine library location. URL = " + url.getPath());
        }
        if (libDir != null) {
            File[] files = libDir.listFiles();
            final List<URL> urlList = new ArrayList<>();
            if (files != null) {
                for (File file : files) {
                    try {
                        urlList.add(file.toURI().toURL());
                    } catch (MalformedURLException me) {
                        me.printStackTrace();
                    }
                }
            }
            URLClassLoader cl = new URLClassLoader((URL[]) urlList.toArray(new URL[0]), this.getClass().getClassLoader());
            return cl;
        } else {
            throw new RuntimeException("Could not import library. Failed to determine importer library location ");
        }
    }
}