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/*
 * Copyright (C) 2012 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.crsh.text;

import java.io.IOException;

/** @author Julien Viet */
public enum Format {

  TEXT() {
    @Override
    public void append(Chunk chunk, Appendable to) throws IOException {
      if (chunk instanceof Text) {
        Text text = (Text)chunk;
        if (text.value.length() > 0) {
          to.append(text.value);
        }
      }
    }
  },

  ANSI() {
    @Override
    public void append(Chunk chunk, Appendable to) throws IOException {
      if (chunk instanceof Text) {
        Text text = (Text)chunk;
        if (text.value.length() > 0) {
          to.append(text.value);
        }
      } else if (chunk instanceof Style) {
        ((Style)chunk).writeAnsiTo(to);
      }
    }
  };

  public abstract void append(Chunk chunk, Appendable to) throws IOException;

}