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/*******************************************************************************
* Copyright (c) 2011 MontaVista Software
*
* 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:
* Yufen Kuo (ykuo@mvista.com) - Initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.lttng.core;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ProjectScope;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
public class TraceHelper {
// ------------------------------------------------------------------------
// Constants
// ------------------------------------------------------------------------
private static String TRACE_LIB_PATH = "traceLibraryPath"; //$NON-NLS-1$
private static String QUALIFIER = "org.eclipse.linuxtools.lttng.jni"; //$NON-NLS-1$
// ------------------------------------------------------------------------
// Methods
// ------------------------------------------------------------------------
/**
* Get Trace Library Directory from Project Preference.
*
* @param project
* The <b>project</b> in the workspace.
* @return The <b>directory</b> of the trace libraries. null if not defined
*/
public static String getTraceLibDirFromProject(IProject project) {
if (project != null && project.exists()) {
return getProjectPreference(project, TRACE_LIB_PATH);
}
return null;
}
/**
* Get the project preference with the specified name
*
* @param project
* The <b>project</b> in the workspace.
* @param preferenceName
* name of the preference.
* @return The project preference value.
*/
public static String getProjectPreference(IProject project, String preferenceName) {
if (project.exists()) {
IEclipsePreferences prefs = new ProjectScope(project).getNode(QUALIFIER);
return prefs.get(preferenceName, null);
}
return null;
}
/**
* Set the project preference with the specified value
*
* @param project
* The <b>project</b> in the workspace.
* @param preferenceName
* name of the preference.
* @param preferenceValue
* value of the preference.
* @return true if preference is successfully set, false otherwise.
*/
public static boolean setProjectPreference(IProject project, String preferenceName, String preferenceValue) {
if (project.exists()) {
IEclipsePreferences prefs = new ProjectScope(project).getNode(QUALIFIER);
prefs.put(preferenceName, preferenceValue);
try {
prefs.flush();
return true;
} catch (org.osgi.service.prefs.BackingStoreException e) {
e.printStackTrace();
}
}
return false;
}
/**
* Remove the project preference with the specified name
*
* @param project
* The <b>project</b> in the workspace.
* @param preferenceName
* name of the preference.
* @return true if preference name is successfully remove, false otherwise.
*/
public static boolean removeProjectPreference(IProject project, String preferenceName) {
if (project.exists()) {
IEclipsePreferences prefs = new ProjectScope(project).getNode(QUALIFIER);
prefs.remove(preferenceName);
try {
prefs.flush();
return true;
} catch (org.osgi.service.prefs.BackingStoreException e) {
e.printStackTrace();
}
}
return false;
}
}
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