From 8ecd4c57cd92383ec309ac6467c764ec71900d11 Mon Sep 17 00:00:00 2001
From: "Christian P. MOMON" <christian.momon@devinsy.fr>
Date: Tue, 29 Oct 2013 15:17:20 +0100
Subject: [PATCH] Add getExtension method with String parameter.

---
 src/fr/devinsy/util/FileTools.java | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/src/fr/devinsy/util/FileTools.java b/src/fr/devinsy/util/FileTools.java
index ad5f1fd..4fddf29 100644
--- a/src/fr/devinsy/util/FileTools.java
+++ b/src/fr/devinsy/util/FileTools.java
@@ -114,10 +114,35 @@ public class FileTools
 		}
 		else
 		{
-			int separatorIndex = file.getName().lastIndexOf('.');
+			result = getExtension(file.getName());
+		}
+
+		//
+		return result;
+	}
+
+	/**
+	 * Get the extension of a file.
+	 * 
+	 * @param file
+	 *            Source.
+	 * 
+	 * @return Extension value or null.
+	 */
+	public static String getExtension(final String fileName)
+	{
+		String result;
+
+		if (fileName == null)
+		{
+			result = null;
+		}
+		else
+		{
+			int separatorIndex = fileName.lastIndexOf('.');
 			if (separatorIndex > 0)
 			{
-				result = file.getName().substring(separatorIndex + 1).toLowerCase();
+				result = fileName.substring(separatorIndex + 1).toLowerCase();
 			}
 			else
 			{