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 */ 020 021package org.sonar.squid.text; 022 023public class SingleLineCommentHandler extends LineContextHandler { 024 025 private StringBuilder comment; 026 027 private final String commentStartTag; 028 private final String commentNotStartTag; 029 030 public SingleLineCommentHandler(String commentStartTag) { 031 this(commentStartTag, null); 032 } 033 034 public SingleLineCommentHandler(String commentStartTag, String commentNotStartTag) { 035 this.commentStartTag = commentStartTag; 036 this.commentNotStartTag = commentNotStartTag; 037 } 038 039 @Override 040 boolean matchToEnd(Line line, StringBuilder pendingLine) { 041 if (comment == null) { 042 throw new IllegalStateException("Method doContextBegin(StringBuilder pendingLine) has not been called."); 043 } 044 comment.append(getLastCharacter(pendingLine)); 045 return false; 046 } 047 048 @Override 049 boolean matchToBegin(Line line, StringBuilder pendingLine) { 050 boolean doContextBegin = matchEndOfString(pendingLine, commentStartTag) 051 && (commentNotStartTag == null || !matchEndOfString(pendingLine, commentNotStartTag)); 052 if (doContextBegin) { 053 comment = new StringBuilder(commentStartTag); 054 } 055 return doContextBegin; 056 } 057 058 @Override 059 boolean matchWithEndOfLine(Line line, StringBuilder pendingLine) { 060 line.setComment(comment.toString()); 061 comment = null; 062 return true; 063 } 064}