org.jboss.ide.eclipse.freemarker.configuration.ProjectClassLoader.java Source code

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Here is the source code for org.jboss.ide.eclipse.freemarker.configuration.ProjectClassLoader.java

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/*
 * JBoss by Red Hat
 * Copyright 2006-2009, Red Hat Middleware, LLC, and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.ide.eclipse.freemarker.configuration;

import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaModelException;
import org.jboss.ide.eclipse.freemarker.Plugin;

/**
 * @author <a href="mailto:joe@binamics.com">Joe Hudson</a>
 */
public class ProjectClassLoader extends URLClassLoader {

    public ProjectClassLoader(IJavaProject project) throws JavaModelException {
        super(getURLSFromProject(project, null), Thread.currentThread().getContextClassLoader());
    }

    public ProjectClassLoader(IJavaProject project, URL[] extraUrls) throws JavaModelException {
        super(getURLSFromProject(project, extraUrls), Thread.currentThread().getContextClassLoader());
    }

    private static URL[] getURLSFromProject(IJavaProject project, URL[] extraUrls) throws JavaModelException {
        List<URL> list = new ArrayList<URL>();
        if (null != extraUrls) {
            for (int i = 0; i < extraUrls.length; i++) {
                list.add(extraUrls[i]);
            }
        }

        IPackageFragmentRoot[] roots = project.getAllPackageFragmentRoots();
        String installLoc = ResourcesPlugin.getWorkspace().getRoot().getLocation().toFile().getAbsolutePath();
        installLoc = installLoc.replace('\\', '/');
        if (installLoc.endsWith("/")) //$NON-NLS-1$
            installLoc = installLoc.substring(0, installLoc.length() - 1);

        for (int i = 0; i < roots.length; i++) {
            try {
                if (roots[i].isArchive()) {
                    File f = new File(FileLocator
                            .resolve(roots[i].getPath().makeAbsolute().toFile().toURI().toURL()).getFile());
                    if (f.exists()) {
                        list.add(FileLocator.resolve(roots[i].getPath().makeAbsolute().toFile().toURI().toURL()));
                    } else {
                        String s = roots[i].getPath().toOSString().replace('\\', '/');
                        if (!s.startsWith("/")) //$NON-NLS-1$
                            s = "/" + s; //$NON-NLS-1$
                        f = new File(installLoc + s);
                        if (f.exists()) {
                            list.add(f.toURI().toURL());
                        } else {
                            f = new File("c:" + installLoc + s); //$NON-NLS-1$
                            if (f.exists()) {
                                list.add(f.toURI().toURL());
                            } else {
                                f = new File("d:" + installLoc + s); //$NON-NLS-1$
                                if (f.exists()) {
                                    list.add(f.toURI().toURL());
                                }
                            }
                        }
                    }
                } else {
                    IPath path = roots[i].getJavaProject().getOutputLocation();
                    if (path.segmentCount() > 1) {
                        IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
                        path = root.getFolder(path).getLocation();
                        list.add(path.toFile().toURI().toURL());
                    } else {
                        path = roots[i].getJavaProject().getProject().getLocation();
                        list.add(path.toFile().toURI().toURL());
                    }
                }
            } catch (Exception e) {
                Plugin.log(e);
            }
        }

        return list.toArray(new URL[list.size()]);
    }
}