Add a very rudimentary command line program that will check the integrity (a very basic integrity check) of a world.

src/joptsimple/internal/MethodInvokingValueConverter.java

@@ -0,0 +1,58 @@
+/*
+ The MIT License
+
+ Copyright (c) 2009 Paul R. Holser, Jr.
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+package joptsimple.internal;
+
+import java.lang.reflect.Method;
+
+import joptsimple.ValueConverter;
+import static joptsimple.internal.Reflection.*;
+
+/**
+ * @param <V> constraint on the type of values being converted to
+ * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
+ * @version $Id: MethodInvokingValueConverter.java,v 1.4 2009/10/25 18:37:08 pholser Exp $
+ */
+class MethodInvokingValueConverter<V> implements ValueConverter<V> {
+    private final Method method;
+    private final Class<V> clazz;
+
+    MethodInvokingValueConverter( Method method, Class<V> clazz ) {
+        this.method = method;
+        this.clazz = clazz;
+    }
+
+    public V convert( String value ) {
+        return clazz.cast( invoke( method, value ) );
+    }
+
+    public Class<V> valueType() {
+        return clazz;
+    }
+
+    public String valuePattern() {
+        return null;
+    }
+}