001/*
002 * Copyright 1999-2004 The Apache Software Foundation.
003 * 
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * 
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 * 
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.itextpdf.text.pdf.hyphenation;
018
019import java.io.Serializable;
020
021/**
022 * This class represents a hyphen. A 'full' hyphen is made of 3 parts:
023 * the pre-break text, post-break text and no-break. If no line-break
024 * is generated at this position, the no-break text is used, otherwise,
025 * pre-break and post-break are used. Typically, pre-break is equal to
026 * the hyphen character and the others are empty. However, this general
027 * scheme allows support for cases in some languages where words change
028 * spelling if they're split across lines, like german's 'backen' which
029 * hyphenates 'bak-ken'. BTW, this comes from TeX.
030 *
031 * @author Carlos Villegas <cav@uniscope.co.jp>
032 */
033
034public class Hyphen implements Serializable {
035    private static final long serialVersionUID = -7666138517324763063L;
036        public String preBreak;
037    public String noBreak;
038    public String postBreak;
039
040    Hyphen(String pre, String no, String post) {
041        preBreak = pre;
042        noBreak = no;
043        postBreak = post;
044    }
045
046    Hyphen(String pre) {
047        preBreak = pre;
048        noBreak = null;
049        postBreak = null;
050    }
051
052    public String toString() {
053        if (noBreak == null 
054                && postBreak == null 
055                && preBreak != null
056                && preBreak.equals("-")) {
057            return "-";
058                }
059        StringBuffer res = new StringBuffer("{");
060        res.append(preBreak);
061        res.append("}{");
062        res.append(postBreak);
063        res.append("}{");
064        res.append(noBreak);
065        res.append('}');
066        return res.toString();
067    }
068
069}