001/* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2012 SonarSource 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 */ 020package org.sonar.colorizer; 021 022import java.util.regex.Matcher; 023import java.util.regex.Pattern; 024 025import org.sonar.channel.CodeReader; 026 027public class RegexpTokenizer extends NotThreadSafeTokenizer{ 028 029 private final String tagBefore; 030 private final String tagAfter; 031 private final Matcher matcher; 032 private final StringBuilder tmpBuilder = new StringBuilder(); 033 034 /** 035 * @param tagBefore 036 * Html tag to add before the token 037 * @param tagAfter 038 * Html tag to add after the token 039 * @param regexp 040 * Regular expression which must be used to match token 041 */ 042 public RegexpTokenizer(String tagBefore, String tagAfter, String regexp) { 043 this.tagBefore = tagBefore; 044 this.tagAfter = tagAfter; 045 this.matcher = Pattern.compile(regexp).matcher(""); 046 } 047 048 @Override 049 public boolean consume(CodeReader code, HtmlCodeBuilder codeBuilder) { 050 if (code.popTo(matcher, tmpBuilder) > 0) { 051 codeBuilder.appendWithoutTransforming(tagBefore); 052 codeBuilder.append(tmpBuilder); 053 codeBuilder.appendWithoutTransforming(tagAfter); 054 tmpBuilder.delete(0, tmpBuilder.length()); 055 return true; 056 } 057 return false; 058 } 059 060 @Override 061 public RegexpTokenizer clone() { 062 return new RegexpTokenizer(tagBefore, tagAfter, matcher.pattern().pattern()); 063 } 064}