Initial Commit - Copy from Altus Metrum AltOS

altoslib/AltosPreferencesBackend.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright © 2010 Mike Beattie <mike@ethernal.org>
+ *
+ * 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.
+ */
+
+package org.altusmetrum.altoslib_14;
+
+import java.io.*;
+import java.util.*;
+import java.text.*;
+
+public abstract class AltosPreferencesBackend {
+
+	public abstract String  getString(String key, String def);
+	public abstract void    putString(String key, String value);
+
+	public abstract int     getInt(String key, int def);
+	public abstract void    putInt(String key, int value);
+
+	public abstract double  getDouble(String key, double def);
+	public abstract void    putDouble(String key, double value);
+
+	public abstract boolean getBoolean(String key, boolean def);
+	public abstract void    putBoolean(String key, boolean value);
+
+	public abstract byte[]  getBytes(String key, byte[] def);
+	public abstract void    putBytes(String key, byte[] value);
+
+	public AltosJson	getJson(String key) {
+		String	value = getString(key, null);
+
+		if (value == null)
+			return null;
+		try {
+			return AltosJson.fromString(value);
+		} catch (IllegalArgumentException ie) {
+			return null;
+		}
+	}
+
+	public void	       	putJson(String key, AltosJson j) {
+		putString(key, j.toString());
+	}
+
+	public abstract boolean nodeExists(String key);
+	public abstract AltosPreferencesBackend node(String key);
+
+	public abstract String[] keys();
+	public abstract void    remove(String key);
+
+	public abstract void    flush();
+
+	public abstract File homeDirectory();
+
+	public abstract void debug(String format, Object ... arguments);
+}