org.eclipse.wst.validation.internal.Misc Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright (c) 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.wst.validation.internal;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadMXBean;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Platform;
import org.eclipse.osgi.util.NLS;
/**
* Some miscellaneous helper methods.
* @author karasiuk
*
*/
public final class Misc {
public static void close(InputStream in){
if (in == null)return;
try {
in.close();
}
catch (IOException e){
// eat it
}
}
public static void close(OutputStream out) {
if (out == null)return;
try {
out.close();
}
catch (IOException e){
// eat it
}
}
public static boolean debugOptionAsBoolean(String option){
String opt = Platform.getDebugOption(option);
if (opt == null)return false;
opt = opt.toLowerCase();
if ("true".equals(opt))return true; //$NON-NLS-1$
if ("yes".equals(opt))return true; //$NON-NLS-1$
return false;
}
/**
* Answer a units appropriate string for the time.
* @param time time in nano seconds
*/
public static String getTimeNano(long time){
if (time <= 1000)return NLS.bind(ValMessages.TimeNano, time);
if (time <= 1000000)return NLS.bind(ValMessages.TimeMicro, time/1000);
return getTimeMS(time/1000000);
}
/**
* Answer the CPU time consumed by this thread in nano seconds.
* @return -1 if the time can not be determined.
*/
public static long getCPUTime(){
long cpuTime = -1;
ThreadMXBean tb = ManagementFactory.getThreadMXBean();
if (tb.isCurrentThreadCpuTimeSupported()){
cpuTime = tb.getCurrentThreadCpuTime();
}
return cpuTime;
}
/**
* Answer a units appropriate string for the time.
* @param time time in milliseconds
*/
public static String getTimeMS(long time) {
if (time <= 1000)return ValMessages.TimeUnder;
if (time <= 60000)return NLS.bind(ValMessages.TimeSec, time/1000);
return NLS.bind(ValMessages.TimeMin, time/60000);
}
/**
* Used in debugging so we can see what types of markers there are.
* @param resource
*/
public static String listMarkers(IResource resource){
StringBuffer b = new StringBuffer(2000);
try {
IMarker[] markers = resource.findMarkers(null, true, IResource.DEPTH_ZERO);
for (IMarker m : markers){
Object o = m.getAttribute(IMarker.MESSAGE);
if (o != null){
b.append(o);
}
o = m.getAttribute(IMarker.SEVERITY);
if (o != null){
b.append(", Severity="); //$NON-NLS-1$
b.append(o);
}
b.append("; "); //$NON-NLS-1$
}
}
catch (CoreException e){
}
return b.toString();
}
/**
* Answer true if they are the same. If they are both null then they are the same.
* @param s1 the string to compare. It can be null.
* @param s2 the string to compare. It can be null.
*/
public static boolean same(String s1, String s2){
if (s1 == null && s2 == null)return true;
if (s1 == null)return false;
return s1.equals(s2);
}
public static void niy(String msg){
if (msg == null)msg = "Sorry, this function is not implemented yet"; //$NON-NLS-1$
throw new RuntimeException(msg);
}
/**
* Answer the type as a human readable string. This is only used for debugging.
* @param type
* @return
*/
public static String resourceChangeEventType(int type){
StringBuffer b = new StringBuffer(200);
if ((type & IResourceChangeEvent.POST_BUILD) != 0)b.append("post_build "); //$NON-NLS-1$
if ((type & IResourceChangeEvent.POST_CHANGE) != 0)b.append("post_change "); //$NON-NLS-1$
if ((type & IResourceChangeEvent.PRE_BUILD) != 0)b.append("pre_build "); //$NON-NLS-1$
if ((type & IResourceChangeEvent.PRE_CLOSE) != 0)b.append("pre_close "); //$NON-NLS-1$
if ((type & IResourceChangeEvent.PRE_DELETE) != 0)b.append("pre_delete "); //$NON-NLS-1$
return b.toString();
}
}