/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.apache.bcel.verifier;

The NativeVerifier class implements a main(String[] args) method that's
roughly compatible to the one in the Verifier class, but that uses the
JVM's internal verifier for its class file verification.
This can be used for comparison runs between the JVM-internal verifier
and JustIce.
/**
 * The NativeVerifier class implements a main(String[] args) method that's
 * roughly compatible to the one in the Verifier class, but that uses the
 * JVM's internal verifier for its class file verification.
 * This can be used for comparison runs between the JVM-internal verifier
 * and JustIce.
 *
 */
public abstract class NativeVerifier {

    
This class must not be instantiated.
/**
     * This class must not be instantiated.
     */
    private NativeVerifier() {
    }


    
Works only on the first argument.
/**
     * Works only on the first argument.
     */
    public static void main( final String[] args ) {
        if (args.length != 1) {
            System.out.println("Verifier front-end: need exactly one argument.");
            System.exit(1);
        }
        final int dotclasspos = args[0].lastIndexOf(".class");
        if (dotclasspos != -1) {
            args[0] = args[0].substring(0, dotclasspos);
        }
        args[0] = args[0].replace('/', '.');
        //System.out.println(args[0]);
        try {
            Class.forName(args[0]);
        } catch (final ExceptionInInitializerError eiie) { //subclass of LinkageError!
            System.out.println("NativeVerifier: ExceptionInInitializerError encountered on '"
                    + args[0] + "'.");
            System.out.println(eiie);
            System.exit(1);
        } catch (final LinkageError le) {
            System.out.println("NativeVerifier: LinkageError encountered on '" + args[0] + "'.");
            System.out.println(le);
            System.exit(1);
        } catch (final ClassNotFoundException cnfe) {
            System.out.println("NativeVerifier: FILE NOT FOUND: '" + args[0] + "'.");
            System.exit(1);
        } catch (final Throwable t) { // OK to catch Throwable here as we call exit.
            System.out.println("NativeVerifier: Unspecified verification error on '" + args[0] + "'.");
            System.exit(1);
        }
        System.out.println("NativeVerifier: Class file '" + args[0] + "' seems to be okay.");
        System.exit(0);
    }
}