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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.felix.ipojo.manipulator.util;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.lang.reflect.Array;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>/**<a name="line.24"></a> |
| <span class="sourceLineNo">025</span> * {@code Collections5} is a static collection of methods being part of the Java6 Collections class.<a name="line.25"></a> |
| <span class="sourceLineNo">026</span> *<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.27"></a> |
| <span class="sourceLineNo">028</span> */<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>public class Collections5 {<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span> /**<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * Copies the specified array, truncating or padding with nulls (if necessary)<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * so the copy has the specified length. For all indices that are<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * valid in both the original array and the copy, the two arrays will<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * contain identical values. For any indices that are valid in the<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * copy but not the original, the copy will contain <tt>null</tt>.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * Such indices will exist if and only if the specified length<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * is greater than that of the original array.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * The resulting array is of exactly the same class as the original array.<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> *<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * @param original the array to be copied<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * @param newLength the length of the copy to be returned<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * @return a copy of the original array, truncated or padded with nulls<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * to obtain the specified length<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * @throws NegativeArraySizeException if <tt>newLength</tt> is negative<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * @throws NullPointerException if <tt>original</tt> is null<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * @since 1.6<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> */<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> @SuppressWarnings("unchecked")<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> public static <T> T[] copyOf(T[] original, int newLength) {<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> return (T[]) copyOf(original, newLength, original.getClass());<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> }<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> /**<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * Copies the specified array, truncating or padding with nulls (if necessary)<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * so the copy has the specified length. For all indices that are<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * valid in both the original array and the copy, the two arrays will<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * contain identical values. For any indices that are valid in the<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * copy but not the original, the copy will contain <tt>null</tt>.<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * Such indices will exist if and only if the specified length<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * is greater than that of the original array.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * The resulting array is of the class <tt>newType</tt>.<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> *<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * @param original the array to be copied<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * @param newLength the length of the copy to be returned<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * @param newType the class of the copy to be returned<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * @return a copy of the original array, truncated or padded with nulls<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * to obtain the specified length<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * @throws NegativeArraySizeException if <tt>newLength</tt> is negative<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * @throws NullPointerException if <tt>original</tt> is null<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * @throws ArrayStoreException if an element copied from<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * <tt>original</tt> is not of a runtime type that can be stored in<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * an array of class <tt>newType</tt><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * @since 1.6<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> */<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> public static <T,U> T[] copyOf(U[] original, int newLength, Class<? extends T[]> newType) {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> @SuppressWarnings("unchecked")<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> T[] copy = ((Object) newType == (Object) Object[].class)<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> ? (T[]) new Object[newLength]<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> : (T[]) Array.newInstance(newType.getComponentType(), newLength);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> System.arraycopy(original, 0, copy, 0,<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> Math.min(original.length, newLength));<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> return copy;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> }<a name="line.84"></a> |
| <span class="sourceLineNo">085</span>}<a name="line.85"></a> |
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