| /******************************************************************************* |
| * Copyright (c) 2000, 2013 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.ant.internal.ui.editor.templates; |
| |
| 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 { |
| |
| Comparator<String> comparator = 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 ${} |
| while (i < type.length() && i < vSeq.length()) |
| if (Character.toLowerCase(type.charAt(i)) == Character.toLowerCase(vSeq.charAt(i))) |
| i++; |
| else |
| break; |
| return i; |
| } |
| }; |
| |
| @Override |
| protected String[] resolveAll(TemplateContext context) { |
| String[] proposals = new String[] { "${srcDir}", "${dstDir}" }; //$NON-NLS-1$ //$NON-NLS-2$ |
| Arrays.sort(proposals, comparator); |
| return proposals; |
| } |
| } |