[CIShell-SVN] SF.net SVN: cishell:[1180] trunk/core/org.cishell.utilities/src/org/cishell /utilities/ArrayUtilities.java

[<kon...@us...>]

Revision: 1180
          http://cishell.svn.sourceforge.net/cishell/?rev=1180&view=rev
Author:   kongchinhua
Date:     2010-12-20 22:16:06 +0000 (Mon, 20 Dec 2010)

Log Message:
-----------
- Add ArrayUtilities.copyOf() to support expend array while copy
- Use Arrays.copyOf instead of ArrayUtilities.copyOf due to JRE1.5 doesn't support Arrays.copyOf
- Fixed style guide warnings in ArrayUtilities.java
- Reviewed by Joseph

Modified Paths:
--------------
    trunk/core/org.cishell.utilities/src/org/cishell/utilities/ArrayUtilities.java

Modified: trunk/core/org.cishell.utilities/src/org/cishell/utilities/ArrayUtilities.java
===================================================================
--- trunk/core/org.cishell.utilities/src/org/cishell/utilities/ArrayUtilities.java	2010-12-16 22:44:07 UTC (rev 1179)
+++ trunk/core/org.cishell.utilities/src/org/cishell/utilities/ArrayUtilities.java	2010-12-20 22:16:06 UTC (rev 1180)
@@ -3,7 +3,11 @@
 import java.util.Iterator;
 import java.util.List;
 
-public class ArrayUtilities {
+public final class ArrayUtilities {
+	
+	private ArrayUtilities() {
+	}
+	
 	public static int indexOf(Object[] array, Object target) {
 		for (int ii = 0; ii < array.length; ii++) {
 			if (array[ii].equals(target)) {
@@ -14,12 +18,12 @@
 		return -1;
 	}
 	
-	public static void swapFirstMatchToFront(Object[] array, List targets) {
-		for (Iterator targetsIt = targets.iterator(); targetsIt.hasNext();) {
+	public static void swapFirstMatchToFront(Object[] array, List<?> targets) {
+		for (Iterator<?> targetsIt = targets.iterator(); targetsIt.hasNext();) {
 			Object target = targetsIt.next();
 			int index = ArrayUtilities.indexOf(array, target);
 			
-			if ( index != -1 ) {
+			if (index != -1) {
 				swap(array, 0, index);
 				return;
 			}
@@ -42,6 +46,31 @@
 		
 		return clone;
 	}
+	
+	/**
+	 * This method will return a shadow copy of the given array with the desired size.
+	 * If the given disiredSize exceeds the original array size, the remaining items
+	 * will be filled with empty string.
+	 * @param array - The original array to be copied
+	 * @param desiredSize - The desired size of the new array
+	 * @return The new copy of the original array with the desired size
+	 */
+	public static String[] copyOf(String[] array, int desiredSize) {
+		String[] newArray = new String[desiredSize];
+		int copiedSize = Math.min(array.length, desiredSize);
+		
+		/* Copy items from the original array to new array */
+		for (int i = 0; i < copiedSize; i++) {
+			newArray[i] = array[i];
+		}
+		
+		/* Fill the extra items will empty string if there are */
+		for (int i = copiedSize; i < desiredSize; i++) {
+			newArray[i] = "";
+		}
+		
+		return newArray;
+	}
 
 	// TODO: Find a better place to put this?
 	public static <T> boolean allAreNull(T... objects) {


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