package org.apache.maven.shared.utils;

 /*

  * 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.io.FileInputStream;

 import java.io.IOException;

 import java.util.Properties;

 import org.apache.maven.shared.utils.io.IOUtil;

 import javax.annotation.Nonnull;

 import javax.annotation.Nullable;

 public class PropertyUtils

 {

     public PropertyUtils()

     {

         // should throw new IllegalAccessError( "Utility class" );

     }

     public static java.util.Properties loadProperties( @Nonnull java.net.URL url )

     {

         try

         {

             return loadProperties( url.openStream() );

         }

         catch ( Exception e )

         {

             // ignore

         }

         return null;

     }

     public static java.util.Properties loadProperties( @Nonnull java.io.File file )

     {

         try

         {

             return loadProperties( new FileInputStream( file ) );

         }

         catch ( Exception e )

         {

             // ignore

         }

         return null;

     }

     public static java.util.Properties loadProperties( @Nullable java.io.InputStream is )

     {

         try

         {

             // to make this the same behaviour as the others we should really return null on any error

             Properties result = new Properties();

             if ( is != null )

             {

                 try

                 {

                     result.load( is );

                 }

                 catch ( IOException e )

                 {

                     // ignore

                 }

             }

             return result;

         }

         catch ( Exception e )

         {

             // ignore

         }

         finally

         {

             IOUtil.close( is );

         }

         return null;

     }

 }