1 package org.apache.maven.shared.utils.io;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.io.File;
23 import java.lang.reflect.InvocationTargetException;
24 import java.lang.reflect.Method;
25
26 /**
27 * Java7 feature detection
28 *
29 * @author Kristian Rosenvold
30 */
31 public class Java7Support
32 {
33
34 private static final boolean isJava7;
35
36 private static Method isSymbolicLink;
37
38 private static Method toPath;
39
40 static
41 {
42 boolean isJava7x = true;
43 try
44 {
45 Class<?> files = Class.forName( "java.nio.file.Files" );
46 Class<?> path = Class.forName( "java.nio.file.Path" );
47 isSymbolicLink = files.getMethod( "isSymbolicLink", path );
48 toPath = File.class.getMethod( "toPath" );
49 } catch (ClassNotFoundException e)
50 {
51 isJava7x = false;
52 } catch (NoSuchMethodException e)
53 {
54 isJava7x = false;
55 }
56 isJava7 = isJava7x;
57 }
58
59 public static boolean isSymLink( File file )
60 {
61 try
62 {
63 Object path = toPath.invoke( file );
64 return (Boolean) isSymbolicLink.invoke( null, path );
65 }
66 catch ( IllegalAccessException e )
67 {
68 throw new RuntimeException( e );
69 }
70 catch ( InvocationTargetException e )
71 {
72 throw new RuntimeException( e );
73 }
74 }
75
76
77
78 public static boolean isJava7()
79 {
80 return isJava7;
81 }
82 }