content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   * 
   *      http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.lucene.analysis.compound.hyphenation;
  
  import java.io.Serializable;
  
  /**
   * This class represents a hyphen. A 'full' hyphen is made of 3 parts: the
   * pre-break text, post-break text and no-break. If no line-break is generated
   * at this position, the no-break text is used, otherwise, pre-break and
   * post-break are used. Typically, pre-break is equal to the hyphen character
   * and the others are empty. However, this general scheme allows support for
   * cases in some languages where words change spelling if they're split across
   * lines, like german's 'backen' which hyphenates 'bak-ken'. BTW, this comes
   * from TeX.
   * 
   * This class has been taken from the Apache FOP project (http://xmlgraphics.apache.org/fop/). They have been slightly modified. 
   */
  
  public class Hyphen implements Serializable {
    public String preBreak;
  
    public String noBreak;
  
    public String postBreak;
  
    Hyphen(String pre, String no, String post) {
      preBreak = pre;
      noBreak = no;
      postBreak = post;
    }
  
    Hyphen(String pre) {
      preBreak = pre;
      noBreak = null;
      postBreak = null;
    }
  
    @Override
    public String toString() {
      if (noBreak == null && postBreak == null && preBreak != null
          && preBreak.equals("-")) {
        return "-";
      }
      StringBuilder res = new StringBuilder("{");
      res.append(preBreak);
      res.append("}{");
      res.append(postBreak);
      res.append("}{");
      res.append(noBreak);
      res.append('}');
      return res.toString();
    }
  
  }
  