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/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache License, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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package org.apache.tools.ant.types.resources; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.List; |
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import org.apache.tools.ant.types.Resource; |
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/** |
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* ResourceCollection that contains all resources of another |
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* collection except for the first <code>count</code> elements, a la |
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* the UNIX tail command with parameter <code>-n +count</code>. |
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* @since Ant 1.9.5 |
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*/ |
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public class AllButFirst extends SizeLimitCollection { |
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/** |
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* Take the first <code>count</code> elements. |
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* @return a Collection of Resources. |
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*/ |
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protected Collection<Resource> getCollection() { |
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int ct = getValidCount(); |
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Iterator<Resource> iter = getResourceCollection().iterator(); |
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List<Resource> al = new ArrayList<Resource>(); |
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for (int i = 0; i < ct && iter.hasNext(); i++) { |
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// discard |
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iter.next(); |
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} |
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while (iter.hasNext()) { |
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al.add(iter.next()); |
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} |
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return al; |
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} |
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@Override |
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public synchronized int size() { |
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int sz = getResourceCollection().size(); |
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int ct = getValidCount(); |
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return sz > ct ? sz - ct : 0; |
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} |
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} |
Stefan Bodewig