1 package org.apache.maven.doxia.site.decoration;
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 org.codehaus.plexus.util.StringUtils;
23
24 /**
25 * Decoration model utilities.
26 *
27 * @since 1.7
28 */
29 public class DecorationUtils
30 {
31 public static boolean isLink( String href )
32 {
33 return StringUtils.isNotBlank( href )
34 && ( startsWithAnyIgnoreCase( href, "http:/", "https:/", "ftp:/", "mailto:", "file:/" )
35 || href.contains( "://" ) );
36 }
37
38 private static boolean startsWithIgnoreCase( String str, String prefix )
39 {
40 if ( str == null || prefix == null )
41 {
42 return ( str == null && prefix == null );
43 }
44 if ( prefix.length() > str.length() )
45 {
46 return false;
47 }
48 return str.regionMatches( true, 0, prefix, 0, prefix.length() );
49 }
50
51 public static boolean startsWithAnyIgnoreCase( String string, String... searchStrings )
52 {
53 for ( int i = 0; i < searchStrings.length; i++ )
54 {
55 String searchString = searchStrings[i];
56 if ( startsWithIgnoreCase( string, searchString ) )
57 {
58 return true;
59 }
60 }
61 return false;
62 }
63 }