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/*******************************************************************************
* Copyright (c) 2014, 2018 IBM Corporation and others.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Brajesh K Rathore <brrathor@linux.vnet.ibm.com> - initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.oprofile.ui.model;
import java.text.Collator;
import java.util.Comparator;
/**
* Comparator for sorting tree elements.
*
* @since 3.0
*/
public class UiModelSorting implements Comparator<IUiModelElement> {
private static UiModelSorting instance = new UiModelSorting();
private Collator collator;
private UiModelSorting() {
collator = Collator.getInstance();
}
public static UiModelSorting getInstance() {
return instance;
}
@Override
public int compare(IUiModelElement o1, IUiModelElement o2) {
// compare line no.
if (o1 instanceof UiModelSample && o2 instanceof UiModelSample) {
return ((UiModelSample) o1).getLine()
- ((UiModelSample) o2).getLine();
} else if (o1 instanceof UiModelSymbol && o2 instanceof UiModelSymbol) {
// compare function name
return collator.compare(((UiModelSymbol) o1).getFunctionName(),
((UiModelSymbol) o2).getFunctionName());
} else if (o1 instanceof UiModelImage && o2 instanceof UiModelImage) {
// comapre lib name
return collator.compare(getLibraryName(o1.getLabelText()),
getLibraryName(o2.getLabelText()));
}
// default comparison based on display label
return collator.compare(o1.getLabelText(), o2.getLabelText());
}
private String getLibraryName(String lib) {
// /lib64/libc-2.12.so - libc-2.12.s0
String libName = ""; //$NON-NLS-1$
int index = 0;
if (null != lib && lib.trim().length() != 0) {
index = lib.lastIndexOf('/');
if (index != -1) {
libName = lib.substring(index + 1, lib.length());
}
}
return libName;
}
}
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