Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2008 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.pde.internal.ui.samples; import java.io.*; import java.lang.reflect.InvocationTargetException; import java.net.URL; import java.util.Properties; import java.util.zip.ZipFile; import org.eclipse.core.resources.*; import org.eclipse.core.runtime.*; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.pde.internal.ui.*; import org.eclipse.ui.dialogs.IOverwriteQuery; import org.eclipse.ui.wizards.datatransfer.ImportOperation; import org.eclipse.ui.wizards.datatransfer.ZipFileStructureProvider; import org.osgi.framework.Bundle; public class SampleOperation implements IRunnableWithProgress { private static final String SAMPLE_PROPERTIES = "sample.properties"; //$NON-NLS-1$ private IConfigurationElement sample; private String[] projectNames; private IFile sampleManifest; private IOverwriteQuery query; private boolean yesToAll; private boolean cancel; private IProject[] createdProjects; /** * */ public SampleOperation(IConfigurationElement sample, String[] projectNames, IOverwriteQuery query) { this.sample = sample; this.query = query; this.projectNames = projectNames; } public IFile getSampleManifest() { return sampleManifest; } public IProject[] getCreatedProjects() { return createdProjects; } /* * (non-Javadoc) * * @see org.eclipse.jface.operation.IRunnableWithProgress#run(org.eclipse.core.runtime.IProgressMonitor) */ public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { try { IWorkspaceRunnable op = new IWorkspaceRunnable() { public void run(IProgressMonitor monitor) throws CoreException { IConfigurationElement[] projects = sample.getChildren("project"); //$NON-NLS-1$ monitor.beginTask(PDEUIMessages.SampleOperation_creating, 4 * projects.length); createdProjects = new IProject[projects.length]; try { for (int i = 0; i < projects.length; i++) { IFile file = importProject(projectNames[i], projects[i], new SubProgressMonitor(monitor, 4)); if (file != null && sampleManifest == null) sampleManifest = file; if (file != null) { createdProjects[i] = file.getProject(); } if (cancel) // if user has cancelled operation, exit. break; } } catch (InterruptedException e) { throw new OperationCanceledException(); } catch (InvocationTargetException e) { throwCoreException(e); } } }; PDEPlugin.getWorkspace().run(op, monitor); } catch (CoreException e) { throw new InvocationTargetException(e); } catch (OperationCanceledException e) { throw e; } finally { monitor.done(); } } private void throwCoreException(InvocationTargetException e) throws CoreException { Throwable t = e.getCause(); Status status = new Status(IStatus.ERROR, IPDEUIConstants.PLUGIN_ID, IStatus.OK, e.getMessage(), t); throw new CoreException(status); } private IFile importProject(String name, IConfigurationElement config, IProgressMonitor monitor) throws CoreException, InvocationTargetException, InterruptedException { String path = config.getAttribute("archive"); //$NON-NLS-1$ if (name == null || path == null) return null; IWorkspace workspace = PDEPlugin.getWorkspace(); IWorkspaceRoot root = workspace.getRoot(); IProject project = root.getProject(name); boolean skip = false; if (project.exists()) { if (!yesToAll) { String returnId = query.queryOverwrite(project.getFullPath().toString()); if (returnId.equals(IOverwriteQuery.ALL)) { yesToAll = true; skip = false; } else if (returnId.equals(IOverwriteQuery.YES)) { skip = false; } else if (returnId.equals(IOverwriteQuery.NO)) { skip = true; } else if (returnId.equals(IOverwriteQuery.CANCEL)) { skip = true; cancel = true; } } if (!skip) { project.delete(true, true, new SubProgressMonitor(monitor, 1)); project = root.getProject(name); } else monitor.worked(1); } if (skip) { monitor.worked(3); IFile manifest = project.getFile(SAMPLE_PROPERTIES); return manifest; } project.create(new SubProgressMonitor(monitor, 1)); project.open(new NullProgressMonitor()); Bundle bundle = Platform.getBundle(sample.getNamespaceIdentifier()); ZipFile zipFile = getZipFileFromPluginDir(path, bundle); importFilesFromZip(zipFile, project.getFullPath(), new SubProgressMonitor(monitor, 1)); return createSampleManifest(project, config, new SubProgressMonitor(monitor, 1)); } private IFile createSampleManifest(IProject project, IConfigurationElement config, IProgressMonitor monitor) throws CoreException { IFile file = project.getFile(SAMPLE_PROPERTIES); if (!file.exists()) { try { ByteArrayOutputStream out = new ByteArrayOutputStream(); Properties properties = new Properties(); createSampleManifestContent(config.getAttribute("name"), properties); //$NON-NLS-1$ properties.store(out, ""); //$NON-NLS-1$ out.flush(); String contents = out.toString(); out.close(); ByteArrayInputStream stream = new ByteArrayInputStream(contents.getBytes("UTF8")); //$NON-NLS-1$ file.create(stream, true, monitor); stream.close(); } catch (UnsupportedEncodingException e) { } catch (IOException e) { } } return file; } private void createSampleManifestContent(String projectName, Properties properties) { writeProperty(properties, "id", sample.getAttribute("id")); //$NON-NLS-1$ //$NON-NLS-2$ writeProperty(properties, "name", sample.getAttribute("name")); //$NON-NLS-1$ //$NON-NLS-2$ writeProperty(properties, "projectName", projectName); //$NON-NLS-1$ writeProperty(properties, "launcher", sample.getAttribute("launcher")); //$NON-NLS-1$ //$NON-NLS-2$ IConfigurationElement desc[] = sample.getChildren("description"); //$NON-NLS-1$ if (desc.length == 1) { writeProperty(properties, "helpHref", desc[0] //$NON-NLS-1$ .getAttribute("helpHref")); //$NON-NLS-1$ writeProperty(properties, "description", desc[0].getValue()); //$NON-NLS-1$ } } private void writeProperty(Properties properties, String name, String value) { if (value == null) return; properties.setProperty(name, value); } private ZipFile getZipFileFromPluginDir(String pluginRelativePath, Bundle bundle) throws CoreException { try { URL starterURL = FileLocator.resolve(bundle.getEntry(pluginRelativePath)); return new ZipFile(FileLocator.toFileURL(starterURL).getFile()); } catch (IOException e) { String message = pluginRelativePath + ": " + e.getMessage(); //$NON-NLS-1$ Status status = new Status(IStatus.ERROR, PDEPlugin.getPluginId(), IStatus.ERROR, message, e); throw new CoreException(status); } } private void importFilesFromZip(ZipFile srcZipFile, IPath destPath, IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { ZipFileStructureProvider structureProvider = new ZipFileStructureProvider(srcZipFile); ImportOperation op = new ImportOperation(destPath, structureProvider.getRoot(), structureProvider, query); op.run(monitor); } }