package org.apache.maven.cli.compat;

 /*

  * 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.

  */

 import org.apache.maven.cli.MavenCli;

 import org.codehaus.classworlds.ClassWorld;

 /**

  * Main class used to shield the user from the rest of Maven in the event the user is using JDK < 1.5.

  * 

  * @since 2.2.0

  */

 public class CompatibleMain

 {

     public static void main( String[] args )

     {

         ClassWorld classWorld = new ClassWorld( "plexus.core", Thread.currentThread().getContextClassLoader() );

         int result = main( args, classWorld );

         System.exit( result );

     }

     /**

      * @noinspection ConfusingMainMethod

      */

     public static int main( String[] args, ClassWorld classWorld )

     {

         // ----------------------------------------------------------------------

         // Setup the command line parser

         // ----------------------------------------------------------------------

         String javaVersion = System.getProperty( "java.specification.version", "1.5" );

         if ( "1.4".equals( javaVersion ) || "1.3".equals( javaVersion ) 

              || "1.2".equals( javaVersion )  || "1.1".equals( javaVersion ) )

         {

                 System.out.println( "Java specification version: " + javaVersion );

             System.err.println( "This release of Maven requires Java version 1.5 or greater." );

             return 1;

         }

         return MavenCli.main( args, classWorld );

     }

 }