org.eclipse.jdt.launching.macosx/macosx/org/eclipse/jdt/internal/launching/macosx/MacOSXVMInstall.java

/*******************************************************************************
 * Copyright (c) 2000, 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.jdt.internal.launching.macosx;

import java.io.File;

import org.eclipse.debug.core.ILaunchManager;
import org.eclipse.jdt.internal.launching.LaunchingMessages;
import org.eclipse.jdt.internal.launching.LaunchingPlugin;
import org.eclipse.jdt.internal.launching.StandardVMType;
import org.eclipse.jdt.launching.AbstractVMInstall;
import org.eclipse.jdt.launching.IVMInstallType;
import org.eclipse.jdt.launching.IVMRunner;
import org.eclipse.osgi.util.NLS;

public class MacOSXVMInstall extends AbstractVMInstall {

	MacOSXVMInstall(IVMInstallType type, String id) {
		super(type, id);
	}

	@Override
	public IVMRunner getVMRunner(String mode) {
		if (ILaunchManager.RUN_MODE.equals(mode)) {
			return new MacOSXVMRunner(this);
		}

		if (ILaunchManager.DEBUG_MODE.equals(mode)) {
			return new MacOSXDebugVMRunner(this);
		}

		return null;
	}

    @Override
	public String getJavaVersion() {
        File installLocation= getInstallLocation();
        if (installLocation != null) {
            File executable= StandardVMType.findJavaExecutable(installLocation);
            if (executable != null) {
                MacOSXVMInstallType installType= (MacOSXVMInstallType) getVMInstallType();
                String vmVersion= installType.getVMVersion(installLocation, executable);
                // strip off extra info
                StringBuilder version= new StringBuilder();
                for (int i= 0; i < vmVersion.length(); i++) {
                    char ch= vmVersion.charAt(i);
                    if (Character.isDigit(ch) || ch == '.') {
                        version.append(ch);
                    } else {
                        break;
                    }
                }
                if (version.length() > 0) {
                    return version.toString();
                }
            }
			LaunchingPlugin.log(NLS.bind(LaunchingMessages.vmInstall_could_not_determine_java_Version, installLocation.getAbsolutePath()));
        }
        return null;
    }
}