Added to support String based utility methods

src/com/maddyhome/idea/vim/helper/StringHelper.java

@@ -0,0 +1,56 @@
+package com.maddyhome.idea.vim.helper;
+
+/*
+* IdeaVim - A Vim emulator plugin for IntelliJ Idea
+* Copyright (C) 2003 Rick Maddy
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+/**
+ *
+ */
+public class StringHelper
+{
+    public static String escape(String text)
+    {
+        StringBuffer res = new StringBuffer(text.length());
+
+        for (int i = 0; i < text.length(); i++)
+        {
+            char ch = text.charAt(i);
+            if (ch < ' ')
+            {
+                res.append('^').append((char)(ch + 'A' - 1));
+            }
+            else if (ch == '\n')
+            {
+                res.append("^J");
+            }
+            else if (ch == '\t')
+            {
+                res.append("^I");
+            }
+            else
+            {
+                res.append(ch);
+            }
+        }
+
+        return res.toString();
+    }
+
+    private StringHelper() {}
+}