package org.apache.maven.wagon.proxy;

 /*

  * 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 java.util.StringTokenizer;

 /**

  * @author <a href="mailto:lafeuil@gmail.com">Thomas Champagne</a>

  */

 public final class ProxyUtils

 {

     private ProxyUtils()

     {

     }

     /**

      * Check if the specified host is in the list of non proxy hosts.

      * 

      * @param proxy the proxy info object contains set of properties.

      * @param targetHost the target hostname

      * @return true if the hostname is in the list of non proxy hosts, false otherwise.

      */

     public static boolean validateNonProxyHosts( ProxyInfo proxy, String targetHost )

     {

         if ( targetHost == null )

         {

             targetHost = new String();

         }

         if ( proxy == null )

         {

             return false;

         }

         String nonProxyHosts = proxy.getNonProxyHosts();

         if ( nonProxyHosts == null )

         {

             return false;

         }

         StringTokenizer tokenizer = new StringTokenizer( nonProxyHosts, "|" );

         while ( tokenizer.hasMoreTokens() )

         {

             String pattern = tokenizer.nextToken();

             pattern = pattern.replaceAll( "\\.", "\\\\." ).replaceAll( "\\*", ".*" );

             if ( targetHost.matches( pattern ) )

             {

                 return true;

             }

         }

         return false;

     }

 }