Created a class for path related utility functions.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@92 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/samskivert/src/java/com/samskivert/net/PathUtil.java

@@ -0,0 +1,28 @@
+//
+// $Id: PathUtil.java,v 1.1 2001/03/04 07:33:29 mdb Exp $
+
+package com.samskivert.util;
+
+/**
+ * Path related utility functions.
+ */
+public class PathUtil
+{
+    /**
+     * Replaces the final component in the supplied path with the
+     * specified new component. For example, if <code>/foo/bar/baz</code>
+     * was provided as the source path, <code>baz</code> would be replaced
+     * with the supplied new path component. If no slashes occur in the
+     * path, the entire path will be replaced.
+     */
+    public static String replaceFinalComponent (String source,
+                                                String newComponent)
+    {
+        int sidx = source.lastIndexOf("/");
+        if (sidx != -1) {
+            return source.substring(0, sidx+1) + newComponent;
+        } else {
+            return newComponent;
+        }
+    }
+}