001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.squid.text.colorizer;
021    
022    import java.util.Arrays;
023    
024    import org.sonar.squid.text.CodeReader;
025    import org.sonar.squid.text.EndTokenMatcher;
026    
027    public abstract class MultilinesDocTokenizer extends Tokenizer {
028    
029      private boolean      commentStartedOnPreviousLine = false;
030      private final char[] startToken;
031    
032      public MultilinesDocTokenizer(String startToken, String tagBefore, String tagAfter) {
033        super(tagBefore, tagAfter);
034        this.startToken = startToken.toCharArray();
035      }
036    
037      public MultilinesDocTokenizer(String startToken) {
038        this("", "", startToken);
039      }
040    
041      @Override
042      public boolean hasNextToken(CodeReader code) {
043        return code.peek() != '\n' && code.peek() != '\r'
044            && (commentStartedOnPreviousLine || (code.peek() == startToken[0] && Arrays.equals(code.peek(startToken.length), startToken)));
045      }
046    
047      @Override
048      public String nextToken(CodeReader code) {
049        String comment = code.readTo(new JavadocEndTokenMatcher(code));
050        return tagBefore + comment + tagAfter;
051      }
052    
053      private class JavadocEndTokenMatcher implements EndTokenMatcher {
054    
055        CodeReader code;
056    
057        public JavadocEndTokenMatcher(CodeReader code) {
058          this.code = code;
059        }
060    
061        public boolean match(int endFlag) {
062          if (code.lastChar() == '/' && code.lastChar(1) == '*') {
063            commentStartedOnPreviousLine = false;
064            return true;
065          }
066          if (endFlag == '\r' || endFlag == '\n') {
067            commentStartedOnPreviousLine = true;
068            return true;
069          }
070          return false;
071        }
072      }
073    
074    }