1 package org.apache.maven.shared.filtering;
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.util.regex.Pattern;
23 import org.codehaus.plexus.util.StringUtils;
24
25 /**
26 * @author <a href="mailto:olamy@apache.org">olamy</a>
27 * @author Dennis Lundberg
28 * @version $Id: FilteringUtils.java 1061510 2011-01-20 20:58:23Z dennisl $
29 */
30 public final class FilteringUtils
31 {
32 private static final String WINDOWS_PATH_PATTERN = "^(.*)[a-zA-Z]:\\\\(.*)";
33
34 private static final Pattern PATTERN = Pattern.compile( WINDOWS_PATH_PATTERN ) ;
35
36 /**
37 *
38 */
39 private FilteringUtils()
40 {
41 // nothing just an util class
42 }
43
44 // TODO: Correct to handle relative windows paths. (http://jira.codehaus.org/browse/MSHARED-121)
45 // How do we distinguish a relative windows path from some other value that happens to contain backslashes??
46 public static String escapeWindowsPath( String val )
47 {
48 if ( !StringUtils.isEmpty( val ) && PATTERN.matcher( val ).matches() )
49 {
50 // Adapted from StringUtils.replace in plexus-utils to accommodate pre-escaped backslashes.
51 StringBuffer buf = new StringBuffer( val.length() );
52 int start = 0, end = 0;
53 while ( ( end = val.indexOf( '\\', start ) ) != -1 )
54 {
55 buf.append( val.substring( start, end ) ).append( "\\\\" );
56 start = end + 1;
57
58 if ( val.indexOf( '\\', end + 1 ) == end + 1 )
59 {
60 start++;
61 }
62 }
63
64 buf.append( val.substring( start ) );
65
66 return buf.toString();
67 }
68 return val;
69 }
70
71 }