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 org.sonar.channel.Channel;
023import org.sonar.channel.CodeReader;
024
025import java.util.List;
026
027public class TokenizerDispatcher {
028
029  private Channel<HtmlCodeBuilder>[] tokenizers;
030
031  public TokenizerDispatcher(Channel<HtmlCodeBuilder>... tokenizers) {
032    this.tokenizers = tokenizers;
033  }
034
035  public TokenizerDispatcher(List<Channel<HtmlCodeBuilder>> tokenizersArray) {
036    this.tokenizers = tokenizersArray.toArray(new Channel[tokenizersArray.size()]);
037  }
038
039  public final String colorize(String code) {
040    HtmlCodeBuilder colorizedCode = new HtmlCodeBuilder();
041    colorize(new CodeReader(code), colorizedCode);
042    return colorizedCode.toString();
043  }
044
045  public final void colorize(CodeReader code, HtmlCodeBuilder colorizedCode) {
046    cloneNotThreadSafeTokenizers();
047    nextChar:
048    while (code.peek() != -1) {
049      for (Channel<HtmlCodeBuilder> codeTokenizer : tokenizers) {
050        if (codeTokenizer.consume(code, colorizedCode)) {
051          continue nextChar;
052        }
053      }
054      colorizedCode.append((char) code.pop());
055    }
056  }
057
058  private void cloneNotThreadSafeTokenizers() {
059    for (int i = 0; i < tokenizers.length; i++) {
060      if (tokenizers[i] instanceof NotThreadSafeTokenizer) {
061        tokenizers[i] = ((NotThreadSafeTokenizer) tokenizers[i]).clone();
062      }
063    }
064  }
065}