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

src/joptsimple/NoArgumentOptionSpec.java

@@ -0,0 +1,79 @@
+/*
+ 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;
+
+import java.util.Collection;
+import java.util.List;
+
+import static java.util.Collections.*;
+
+/**
+ * <p>A specification for an option that does not accept arguments.</p>
+ *
+ * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
+ * @version $Id: NoArgumentOptionSpec.java,v 1.16 2009/10/04 00:13:41 pholser Exp $
+ */
+class NoArgumentOptionSpec extends AbstractOptionSpec<Void> {
+    NoArgumentOptionSpec( String option ) {
+        this( singletonList( option ), "" );
+    }
+
+    NoArgumentOptionSpec( Collection<String> options, String description ) {
+        super( options, description );
+    }
+
+    @Override
+    void handleOption( OptionParser parser, ArgumentList arguments,
+        OptionSet detectedOptions, String detectedArgument ) {
+
+        detectedOptions.add( this );
+    }
+
+    @Override
+    boolean acceptsArguments() {
+        return false;
+    }
+
+    @Override
+    boolean requiresArgument() {
+        return false;
+    }
+
+    @Override
+    void accept( OptionSpecVisitor visitor ) {
+        visitor.visit( this );
+    }
+
+    @Override
+    protected Void convert( String argument ) {
+        return null;
+    }
+
+    @Override
+    List<Void> defaultValues() {
+        return emptyList();
+    }
+}