From 154be182a6772f6106926cf7b828411ce1d8fcd2 Mon Sep 17 00:00:00 2001
From: andrzej <andrzej@6335cc39-0255-0410-8fd6-9bcaacd3b74c>
Date: Wed, 8 Nov 2006 03:06:36 +0000
Subject: [PATCH] Added an array equivalent of Collection.toArray(T[]) to
 convert arrays to sub-types.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@1967 6335cc39-0255-0410-8fd6-9bcaacd3b74c
---
 src/java/com/samskivert/util/ArrayUtil.java | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/java/com/samskivert/util/ArrayUtil.java b/src/java/com/samskivert/util/ArrayUtil.java
index 02f7711a..ff7028e6 100644
--- a/src/java/com/samskivert/util/ArrayUtil.java
+++ b/src/java/com/samskivert/util/ArrayUtil.java
@@ -22,6 +22,7 @@ package com.samskivert.util;
 
 import java.lang.reflect.Array;
 
+import java.util.Collection;
 import java.util.Comparator;
 import java.util.Random;
 
@@ -817,6 +818,23 @@ public class ArrayUtil
         return values;
     }
     
+    /**
+     * Similar to {@link Collection#toArray}, this method copies the contents
+     * of the first parameter to the second, creating a new array of the same
+     * type if the destination array is too small to hold the contents of the
+     * source.
+     */
+    public static <S extends Object, T extends S> T[] copy (
+        S[] values, T[] store)
+    {
+        @SuppressWarnings("unchecked")
+        T[] dest = (store.length >= values.length) ? store :
+            (T[])Array.newInstance(store.getClass().getComponentType(),
+                values.length);
+        System.arraycopy(values, 0, dest, 0, values.length);
+        return dest;
+    }
+    
     /** The default random object used when shuffling an array. */
     protected static Random _rnd = new Random();
 }