--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/src/main/java/org/tn5250j/encoding/CharMappings.java	Thu Dec 03 11:23:55 2015 -0800
@@ -0,0 +1,91 @@
+/**
+ * Title: CharMappings.java
+ * Copyright:   Copyright (c) 2001,2002,2003
+ * Company:
+ * @author  Kenneth J. Pouncey
+ *          rewritten by LDC, WVL, Luc
+ * @version 0.4
+ *
+ * Description:
+ *
+ * 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, 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 software; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307 USA
+ *
+ */
+package org.tn5250j.encoding;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Character Mappings for EBCDIC to ASCII and ASCII to EBCDIC translations
+ */
+public class CharMappings {
+
+    public static final String DFT_ENC = "37";
+    public static final int NATIVE_CP = 0;
+    public static final int TOOLBOX_CP = 1;
+
+    private static final HashMap<String, ICodePage> map = new HashMap<String, ICodePage>();
+
+    public static String[] getAvailableCodePages() {
+        Set<String> cpset = new HashSet<String>(); // no double entries
+
+        for (String cp : BuiltInCodePageFactory.getInstance().getAvailableCodePages()) {
+            cpset.add(cp);
+        }
+
+        for (String cp : ToolboxCodePageFactory.getInstance().getAvailableCodePages()) {
+            cpset.add(cp);
+        }
+
+        String[] cparray = cpset.toArray(new String[cpset.size()]);
+        Arrays.sort(cparray);
+        return cparray;
+    }
+
+    public static ICodePage getCodePage(String encoding) {
+        if (map.containsKey(encoding)) {
+            return map.get(encoding);
+        }
+
+        ICodePage cp = BuiltInCodePageFactory.getInstance().getCodePage(encoding);
+
+        if (cp != null) {
+            map.put(encoding, cp);
+            return cp;
+        }
+
+        cp = ToolboxCodePageFactory.getInstance().getCodePage(encoding);
+
+        if (cp != null) {
+            map.put(encoding, cp);
+            return cp;
+        }
+
+        cp = JavaCodePageFactory.getCodePage(encoding);
+
+        if (cp != null) {
+            map.put(encoding, cp);
+            return cp;
+        }
+
+        // unsupported codepage ==> return default
+        return BuiltInCodePageFactory.getInstance().getCodePage(DFT_ENC);
+    }
+
+}