| /******************************************************************************* |
| * Copyright (c) 2010, 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.bidi.internal; |
| |
| import java.util.Locale; |
| import org.eclipse.osgi.framework.log.FrameworkLog; |
| import org.eclipse.osgi.framework.log.FrameworkLogEntry; |
| import org.eclipse.osgi.service.localization.LocaleProvider; |
| import org.osgi.framework.*; |
| import org.osgi.util.tracker.ServiceTracker; |
| |
| /** |
| * Provides services related to OSGi bundles. |
| */ |
| public class StructuredTextActivator implements BundleActivator { |
| |
| private ServiceTracker logTracker = null; |
| private BundleContext bundleContext; |
| private static StructuredTextActivator instance; |
| |
| public StructuredTextActivator() { |
| instance = this; // there is only one bundle activator |
| } |
| |
| public void start(BundleContext context) throws Exception { |
| bundleContext = context; |
| instance = this; |
| } |
| |
| public void stop(BundleContext context) throws Exception { |
| if (logTracker != null) { |
| logTracker.close(); |
| logTracker = null; |
| } |
| bundleContext = null; |
| } |
| |
| /** |
| * @return the bundle instance, or <code>null</code> iff OSGi is not running |
| */ |
| public static StructuredTextActivator getInstance() { |
| return instance; |
| } |
| |
| /** |
| * Returns the value of the specified property. If OSGi is not running or the key is not found in |
| * the Framework properties, the system properties are then searched. |
| * <p> |
| * This method can be used without OSGi running. |
| * </p> |
| * |
| * @param key the name of the requested property |
| * @return the value of the requested property, or {@code null} if the property is undefined |
| */ |
| public static String getProperty(String key) { |
| if (instance != null) |
| return instance.bundleContext.getProperty(key); |
| return System.getProperty(key); |
| } |
| |
| public Locale getDefaultLocale() { |
| // use OSGi service |
| ServiceReference[] references = null; |
| try { |
| references = bundleContext.getAllServiceReferences(null, LocaleProvider.class.getName()); |
| } catch (InvalidSyntaxException e) { |
| // do nothing |
| } |
| if (references == null || references.length < 1) |
| return Locale.getDefault(); |
| Object service = bundleContext.getService(references[0]); |
| LocaleProvider localeProvider = (LocaleProvider) service; |
| if (localeProvider != null) { |
| Locale currentLocale = localeProvider.getLocale(); |
| bundleContext.ungetService(references[0]); |
| if (currentLocale != null) |
| return currentLocale; |
| } |
| return Locale.getDefault(); |
| } |
| |
| private FrameworkLog getFrameworkLog() { |
| if (logTracker == null) { |
| logTracker = new ServiceTracker(bundleContext, FrameworkLog.class.getName(), null); |
| logTracker.open(); |
| } |
| return (FrameworkLog) logTracker.getService(); |
| } |
| |
| static public void logError(String message, Exception e) { |
| if (instance != null) { |
| FrameworkLog frameworkLog = instance.getFrameworkLog(); |
| if (frameworkLog != null) { |
| frameworkLog.log(new FrameworkLogEntry("org.eclipse.equinox.bidi", FrameworkLogEntry.ERROR, 1, message, 0, e, null)); //$NON-NLS-1$ |
| return; |
| } |
| } |
| System.err.println(message); |
| if (e != null) |
| e.printStackTrace(); |
| } |
| |
| } |