Add save and load commands (PrefStorage)

src/net/apocalypselabs/symat/Functions.java

@@ -1,41 +1,41 @@
-/* 
+/*
  * CODE LICENSE =====================
  * Copyright (c) 2015, Apocalypse Laboratories
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without modification,
  *  are permitted provided that the following conditions are met:
- * 
+ *
- * 1. Redistributions of source code must retain the above copyright notice, this 
+ * 1. Redistributions of source code must retain the above copyright notice, this
  * list of conditions and the following disclaimer.
- * 
+ *
- * 2. Redistributions in binary form must reproduce the above copyright notice, 
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
  * this list of conditions and the following disclaimer in the documentation and/or
  *  other materials provided with the distribution.
- * 
+ *
- * 3. Neither the name of the copyright holder nor the names of its contributors 
+ * 3. Neither the name of the copyright holder nor the names of its contributors
- * may be used to endorse or promote products derived from this software without 
+ * may be used to endorse or promote products derived from this software without
  * specific prior written permission.
- * 
+ *
  * 4. You adhere to the Media License detailed below.  If you do not, this license
  * is automatically revoked and you must purge all copies of the software you
  * possess, in source or binary form.
- * 
+ *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
- *  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
+ *  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * 
+ *
  * MEDIA LICENSE ====================
  * All images and other graphical files (the "graphics") included with this
  * software are copyright (c) 2015 Apocalypse Laboratories.  You may not distribute
- * the graphics or any program, source code repository, or other digital storage 
+ * the graphics or any program, source code repository, or other digital storage
  * media containing them without written permission from Apocalypse Laboratories.
  * This ban on distribution only applies to publicly available systems.
  * A password-protected network file share, USB drive, or other storage scheme that
@@ -63,6 +63,7 @@ import java.util.Iterator;
 import java.util.Map;
 import java.util.NoSuchElementException;
 import java.util.Set;
+import java.util.prefs.Preferences;
 import javax.swing.JOptionPane;
 import static net.apocalypselabs.symat.Main.API_URL;
 import org.matheclipse.core.eval.EvalUtilities;
@@ -762,56 +763,20 @@ public class Functions {
         return FileUtils.MD5(data);
     }
 
-    // TODO: Make globals work!
+    public void save(String key, String val) {
-//    /*
+        Preferences prefs = Preferences.userNodeForPackage(Functions.class);
-//     Global variables are accessible across scripts.
+        prefs.put(key, val);
-//     */
+        try {
-//    /**
+            prefs.flush();
-//     * Set a global variable.
+        } catch (Exception ex) {
-//     *
+
-//     * @param name The variable name
+        }
-//     * @param var The variable
+    }
-//     */
+
-//    public static void global(String name, Object var) {
+    public String load(String key) {
-//        GLOBALS.put(name, var);
+        Preferences prefs = Preferences.userNodeForPackage(Functions.class);
-//    }
+        return prefs.get(key, "");
-//
+    }
-//    /**
-//     * Get a global variable.
-//     *
-//     * @param name The variable name
-//     * @return The variable
-//     */
-//    public static Object global(String name) {
-//        Object item = GLOBALS.get(name);
-//        return item;
-//    }
-//    
-//    // Fix for Python reserved word "global"
-//    public static void setglobal(String name, Object var) {
-//        global(name, var);
-//    }
-//    
-//    // Fix for Python reserved word "global"
-//    public static void getglobal(String name) {
-//        global(name);
-//    }
-//    
-//    /**
-//     * Clear all the GLOBALS.
-//     */
-//    public static void clrglobals() {
-//        GLOBALS.clear();
-//    }
-//    
-//    /**
-//     * Check if the given global key is set.
-//     * @param name The key to check.
-//     * @return True if the key exists, else false.
-//     */
-//    public static boolean globalcontains(String name) {
-//        return GLOBALS.containsKey(name);
-//    }
 
     /*
      Other