001/*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019package org.crsh.lang.impl.groovy;
020
021import org.crsh.cli.impl.line.LineParser;
022import org.crsh.cli.impl.line.Quoting;
023
024/**
025 * Escape CRLF to '\\' + 'n' inside quotes.
026 *
027 * @author Julien Viet
028 */
029class GroovyLineEscaper extends LineParser.Visitor {
030
031  /** . */
032  final StringBuilder buffer = new StringBuilder();
033  
034  @Override
035  public void onChar(int index, Quoting quoting, boolean backslash, char c) {
036    if (quoting != null && c == '\n') {
037      buffer.append('\\').append('n');
038    } else {
039      if (backslash) {
040        buffer.append('\\');
041      }
042      buffer.append(c);
043    }
044  }
045
046  @Override
047  public void openStrongQuote(int index) {
048    buffer.append("'");
049  }
050
051  @Override
052  public void closeStrongQuote(int index) {
053    buffer.append("'");
054  }
055
056  @Override
057  public void openWeakQuote(int index) {
058    buffer.append("\"");
059  }
060
061  @Override
062  public void closeWeakQuote(int index) {
063    buffer.append("\"");
064  }
065}