| /******************************************************************************* |
| * Copyright (c) 2011 IBM Corporation and others. |
| * |
| * 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.equinox.internal.p2.touchpoint.eclipse.actions; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Map; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.equinox.internal.p2.touchpoint.eclipse.EclipseTouchpoint; |
| import org.eclipse.equinox.internal.p2.touchpoint.eclipse.Util; |
| import org.eclipse.equinox.internal.provisional.frameworkadmin.LauncherData; |
| import org.eclipse.equinox.internal.provisional.frameworkadmin.Manipulator; |
| import org.eclipse.equinox.p2.engine.spi.ProvisioningAction; |
| import org.eclipse.osgi.util.NLS; |
| |
| /** |
| * Touchpoint action which allows the user to set the -vm parameter in the |
| * eclipse.ini file. |
| * |
| */ |
| public class SetJvmAction extends ProvisioningAction { |
| public static final String ID = "setJvm"; //$NON-NLS-1$ |
| |
| @Override |
| public IStatus execute(Map<String, Object> parameters) { |
| String jvmArg = (String) parameters.get(ActionConstants.PARM_JVM); |
| if (jvmArg == null) |
| return Util.createError(NLS.bind(Messages.parameter_not_set, ActionConstants.PARM_JVM, ID)); |
| LauncherData launcherData = ((Manipulator) parameters.get(EclipseTouchpoint.PARM_MANIPULATOR)) |
| .getLauncherData(); |
| File previous = launcherData.getJvm(); |
| File jvm = "null".equals(jvmArg) ? null : new File(jvmArg); //$NON-NLS-1$ |
| // make a backup - even if it is null |
| getMemento().put(ActionConstants.PARM_PREVIOUS_VALUE, previous == null ? null : previous.getPath()); |
| launcherData.setJvm(jvm); |
| if (jvm != null) { |
| adjustWorkbenchSystemProperties(jvm); |
| } |
| return Status.OK_STATUS; |
| } |
| |
| @Override |
| public IStatus undo(Map<String, Object> parameters) { |
| String jvmArg = (String) parameters.get(ActionConstants.PARM_JVM); |
| if (jvmArg == null) |
| return Util.createError(NLS.bind(Messages.parameter_not_set, ActionConstants.PARM_JVM, ID)); |
| // make a backup - even if it is null |
| String previous = (String) getMemento().get(ActionConstants.PARM_PREVIOUS_VALUE); |
| LauncherData launcherData = ((Manipulator) parameters.get(EclipseTouchpoint.PARM_MANIPULATOR)) |
| .getLauncherData(); |
| final File jvm = previous == null ? null : new File(previous); |
| launcherData.setJvm(jvm); |
| if (jvm != null) { |
| adjustWorkbenchSystemProperties(jvm); |
| } |
| return Status.OK_STATUS; |
| } |
| |
| private static void adjustWorkbenchSystemProperties(File jvm) { |
| try { |
| // set the eclipse.vm system property so the Workbench restart will use this vm |
| // to restart. |
| final String fullPath = jvm.getCanonicalPath(); |
| System.setProperty("eclipse.vm", fullPath); |
| |
| // also adjust the -vm property in the eclipse.commands system property so that |
| // vm is actually used. |
| String property = System.getProperty("eclipse.commands"); |
| int index = property.indexOf("-vm"); |
| if (index != -1) { |
| final String vmWithLineFeed = "-vm\n"; |
| // find the next line ending after -vm line. |
| int index2 = property.indexOf('\n', index + vmWithLineFeed.length()); |
| if (index2 == -1) { |
| property = property.substring(0, index) + vmWithLineFeed + fullPath; |
| } else { |
| String tmp = property.substring(0, index) + vmWithLineFeed + fullPath; |
| property = tmp + property.substring(index2); |
| } |
| System.setProperty("eclipse.commands", property); |
| } |
| |
| } catch (IOException e) { |
| // ignore this error, should not really happen for file.getCanonicalPath() which |
| // should be just installed just fine. |
| // if this fails for some reason then only the restart wouldn't be using this, |
| // but it wouldn't block the actual install. |
| } |
| } |
| |
| } |