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/*******************************************************************************
* Copyright (c) 2000, 2015 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.ui.examples.templateeditor.template;
import java.util.Arrays;
import java.util.Comparator;
import org.eclipse.jface.text.templates.TemplateContext;
import org.eclipse.jface.text.templates.TemplateVariableResolver;
/**
* Looks up existing ant variables and proposes them. The proposals are sorted by
* their prefix-likeness with the variable type.
*/
public class AntVariableResolver extends TemplateVariableResolver {
@Override
protected String[] resolveAll(TemplateContext context) {
String[] proposals= new String[] { "${srcDir}", "${dstDir}" }; //$NON-NLS-1$ //$NON-NLS-2$
Arrays.sort(proposals, new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return getCommonPrefixLength(getType(), o2) - getCommonPrefixLength(getType(), o1);
}
private int getCommonPrefixLength(String type, String var) {
int i= 0;
CharSequence vSeq= var.subSequence(2, var.length() - 1); // strip away ${}
while (i < type.length() && i < vSeq.length())
if (Character.toLowerCase(type.charAt(i)) == Character.toLowerCase(vSeq.charAt(i)))
i++;
else
break;
return i;
}
});
return proposals;
}
}
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