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; 021 022 public class SingleLineCommentHandler extends LineContextHandler { 023 024 private StringBuilder comment; 025 026 private final String commentStartTag; 027 private final String commentNotStartTag; 028 029 public SingleLineCommentHandler(String commentStartTag) { 030 this(commentStartTag, null); 031 } 032 033 public SingleLineCommentHandler(String commentStartTag, String commentNotStartTag) { 034 this.commentStartTag = commentStartTag; 035 this.commentNotStartTag = commentNotStartTag; 036 } 037 038 @Override 039 boolean matchToEnd(Line line, StringBuilder pendingLine) { 040 if (comment == null) { 041 throw new IllegalStateException("Method doContextBegin(StringBuilder pendingLine) has not been called."); 042 } 043 comment.append(getLastCharacter(pendingLine)); 044 return false; 045 } 046 047 @Override 048 boolean matchToBegin(Line line, StringBuilder pendingLine) { 049 boolean doContextBegin = matchEndOfString(pendingLine, commentStartTag) 050 && (commentNotStartTag == null || !matchEndOfString(pendingLine, commentNotStartTag)); 051 if (doContextBegin) { 052 comment = new StringBuilder(commentStartTag); 053 } 054 return doContextBegin; 055 } 056 057 @Override 058 boolean matchWithEndOfLine(Line line, StringBuilder pendingLine) { 059 line.setComment(comment.toString()); 060 comment = null; 061 return true; 062 } 063 }