1 package org.apache.maven.plugins.enforcer;
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.io.IOException;
24
25 /**
26 * The Class RequireFilesExist.
27 */
28 public class RequireFilesExist
29 extends AbstractRequireFiles
30 {
31 @Override
32 boolean checkFile( File file )
33 {
34 // if we get here and the handle is null, treat it as a success
35 return file == null ? true : file.exists() && osIndependentNameMatch( file, true );
36 }
37
38 @Override
39 String getErrorMsg()
40 {
41 return "Some required files are missing:" + System.lineSeparator();
42 }
43
44 /**
45 * OSes like Windows are case insensitive, so this method will compare the file path with the actual path. A simple
46 * {@link File#exists()} is not enough for such OS.
47 *
48 * @param file the file to verify
49 * @param defaultValue value to return in case an IO exception occurs, should never happen as the file already
50 * exists
51 * @return
52 */
53 private boolean osIndependentNameMatch( File file, boolean defaultValue )
54 {
55 try
56 {
57 File absFile;
58 if ( !file.isAbsolute() )
59 {
60 absFile = new File( new File( "." ).getCanonicalFile(), file.getPath() );
61 }
62 else
63 {
64 absFile = file;
65 }
66
67 return absFile.toURI().equals( absFile.getCanonicalFile().toURI() );
68 }
69 catch ( IOException e )
70 {
71 return defaultValue;
72 }
73 }
74 }