| /** |
| * |
| * 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. |
| */ |
| package org.apache.maven.doxia.linkcheck.validation; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * A helper class to test if some content matches the given HTML anchor |
| */ |
| public class Anchors |
| { |
| /** |
| * Returns true if the given anchor can be found in the content markup. |
| * |
| * @param content the content string. |
| * @param anchor the anchor to match. |
| * |
| * @return true if the given anchor can be found in the content markup. |
| */ |
| public static boolean matchesAnchor( String content, String anchor ) |
| { |
| if ( content != null && anchor.length() > 0 ) { |
| // can use name or id attributes and also can use single or double quotes with whitespace around the = |
| String regex = "(?i)(name|id)(?-i)\\s*=\\s*('|\")" + escapeBrackets( anchor ) + "('|\")"; |
| Pattern pattern = Pattern.compile( regex ); |
| Matcher matcher = pattern.matcher( content ); |
| return matcher.find(); |
| } |
| return false; |
| } |
| |
| // for javadoc links, see DOXIA-410 |
| private static String escapeBrackets( String content ) |
| { |
| final String escaped = content.replace( "(", "\\(" ).replace( ")", "\\)" ); |
| return escaped.replace( "[", "\\[" ).replace( "]", "\\]" ); |
| } |
| |
| private Anchors() |
| { |
| // utility class |
| } |
| } |