001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2011 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 */ 020 package org.sonar.colorizer; 021 022 import org.sonar.channel.CodeReader; 023 import org.sonar.channel.EndMatcher; 024 025 public class LiteralTokenizer extends Tokenizer { 026 027 private final String tagBefore; 028 private final String tagAfter; 029 030 public LiteralTokenizer(String tagBefore, String tagAfter) { 031 this.tagBefore = tagBefore; 032 this.tagAfter = tagAfter; 033 } 034 035 public LiteralTokenizer() { 036 this("", ""); 037 } 038 039 @Override 040 public boolean consume(CodeReader code, HtmlCodeBuilder codeBuilder) { 041 if (code.peek() == '\'' || code.peek() == '\"') { 042 codeBuilder.appendWithoutTransforming(tagBefore); 043 int firstChar = code.peek(); 044 code.popTo(new EndCommentMatcher(firstChar, code), codeBuilder); 045 codeBuilder.appendWithoutTransforming(tagAfter); 046 return true; 047 } else { 048 return false; 049 } 050 } 051 052 private static class EndCommentMatcher implements EndMatcher { 053 054 private final int firstChar; 055 private final CodeReader code; 056 private StringBuilder literalValue; 057 058 public EndCommentMatcher(int firstChar, CodeReader code) { 059 this.firstChar = firstChar; 060 this.code = code; 061 literalValue = new StringBuilder(); 062 } 063 064 public boolean match(int endFlag) { 065 literalValue.append((char) endFlag); 066 return (code.lastChar() == firstChar && evenNumberOfBackSlashBeforeDelimiter() && literalValue.length() > 1); 067 } 068 069 private boolean evenNumberOfBackSlashBeforeDelimiter() { 070 int numberOfBackSlashChar = 0; 071 for (int index = literalValue.length() - 3; index >= 0; index--) { 072 if (literalValue.charAt(index) == '\\') { 073 numberOfBackSlashChar++; 074 } else { 075 break; 076 } 077 } 078 return numberOfBackSlashChar % 2 == 0; 079 } 080 } 081 }