package org.apache.maven.shared.utils.io;

 /*

  * 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.File;

 import java.lang.reflect.InvocationTargetException;

 import java.lang.reflect.Method;

 /**

  * Java7 feature detection

  *

  * @author Kristian Rosenvold

  */

 public class Java7Support

 {

     private static final boolean isJava7;

     private static Method isSymbolicLink;

     private static Method toPath;

     static

     {

         boolean isJava7x = true;

         try

         {

             Class<?> files = Class.forName( "java.nio.file.Files" );

             Class<?> path = Class.forName( "java.nio.file.Path" );

             isSymbolicLink = files.getMethod( "isSymbolicLink", path );

             toPath = File.class.getMethod( "toPath" );

         } catch (ClassNotFoundException e)

         {

             isJava7x = false;

         } catch (NoSuchMethodException e)

         {

             isJava7x = false;

         }

         isJava7 = isJava7x;

     }

     public static boolean isSymLink( File file )

     {

         try

         {

             Object path = toPath.invoke( file );

             return (Boolean) isSymbolicLink.invoke( null, path );

         }

         catch ( IllegalAccessException e )

         {

             throw new RuntimeException( e );

         }

         catch ( InvocationTargetException e )

         {

             throw new RuntimeException( e );

         }

     }

     public static boolean isJava7()

     {

         return isJava7;

     }

 }