tests/org.eclipse.jst.server.core.tests/src/org/eclipse/jst/server/core/tests/j2ee/ProjectUnzipUtil.java

/*******************************************************************************
 * Copyright (c) 2005, 2022 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     IBM Corporation - Initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.server.core.tests.j2ee;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.NullProgressMonitor;

public class ProjectUnzipUtil {
	private IPath zipLocation;
	private String[] projectNames;

	public ProjectUnzipUtil(IPath aZipLocation, String[] aProjectNames) {
		zipLocation = aZipLocation;
		projectNames = aProjectNames;
	}

	public boolean createProjects() {
		try {
			buildProjects();
			expandZip();
			ResourcesPlugin.getWorkspace().getRoot().refreshLocal(IResource.DEPTH_INFINITE, null);
		} catch (CoreException e) {
			e.printStackTrace();
			return false;
		} catch (IOException e) {
			e.printStackTrace();
			return false;
		}
		return true;
	}

	private void expandZip() throws CoreException, IOException {
		ZipFile zipFile = null;
		try {
			zipFile = new ZipFile(zipLocation.toFile());
		} catch (IOException e1) {
			throw e1;
		}
		Enumeration entries = zipFile.entries();
		while (entries.hasMoreElements()) {
			ZipEntry entry = (ZipEntry) entries.nextElement();
			File aFile = computeLocation(entry.getName()).toFile();
			File parentFile = null;
			try {
				if (entry.isDirectory()) {
					aFile.mkdirs();
				} else {
					parentFile = aFile.getParentFile();
					if (!parentFile.exists())
						parentFile.mkdirs();
					if (!aFile.exists())
						aFile.createNewFile();
					copy(zipFile.getInputStream(entry), new FileOutputStream(aFile));
					if (entry.getTime() > 0)
						aFile.setLastModified(entry.getTime());
				}
			} catch (IOException e) {
				throw e;
			}
		}
	}

	private IPath computeLocation(String name) {
		return ResourcesPlugin.getWorkspace().getRoot().getLocation().append(name);
	}

	private static void copy(InputStream in, OutputStream out) throws IOException {
		byte[] buffer = new byte[1024];
		try {
			int n = in.read(buffer);
			while (n > 0) {
				out.write(buffer, 0, n);
				n = in.read(buffer);
			}
		} finally {
			in.close();
			out.close();
		}
	}

	private void buildProjects() throws CoreException {
		for (int i = 0; i < projectNames.length; i++) {
			IWorkspace workspace = ResourcesPlugin.getWorkspace();
			IProjectDescription description = workspace.newProjectDescription(projectNames[i]);
			IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectNames[i]);
			try {
				project.create(description, new NullProgressMonitor());
				project.open(new NullProgressMonitor());
			}
			catch (CoreException e) {
				throw e;
			}
		}
	}
}