added a convenience method.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@23290 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/FilePath.java

@@ -766,6 +766,17 @@ public final class FilePath implements Serializable {
         });
     }
 
+    /**
+     * Gets the file name portion except the extension.
+     *
+     * For example, "foo" for "foo.txt" and "foo.tar" for "foo.tar.gz".
+     */
+    public String getBaseName() {
+        String n = getName();
+        int idx = n.lastIndexOf('.');
+        if (idx<0)  return n;
+        return n.substring(0,idx);
+    }
     /**
      * Gets just the file name portion.
      *