| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| package org.apache.tools.ant.attribute; |
| |
| import org.apache.tools.ant.UnknownElement; |
| |
| /** |
| * Check if an attribute is blank or not. |
| * @since Ant 1.9.1 |
| */ |
| public class IfBlankAttribute extends BaseIfAttribute { |
| /** The unless version */ |
| public static class Unless extends IfBlankAttribute { |
| { setPositive(false); } |
| } |
| /** |
| * check if the attribute value is blank or not |
| * {@inheritDoc} |
| */ |
| public boolean isEnabled(UnknownElement el, String value) { |
| return convertResult((value == null || "".equals(value))); |
| } |
| } |