001/* 002 * $Id: DefaultSplitCharacter.java 4784 2011-03-15 08:33:00Z blowagie $ 003 * 004 * This file is part of the iText (R) project. 005 * Copyright (c) 1998-2011 1T3XT BVBA 006 * Authors: Bruno Lowagie, Paulo Soares, et al. 007 * 008 * This program is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Affero General Public License version 3 010 * as published by the Free Software Foundation with the addition of the 011 * following permission added to Section 15 as permitted in Section 7(a): 012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT, 013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. 014 * 015 * This program is distributed in the hope that it will be useful, but 016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 017 * or FITNESS FOR A PARTICULAR PURPOSE. 018 * See the GNU Affero General Public License for more details. 019 * You should have received a copy of the GNU Affero General Public License 020 * along with this program; if not, see http://www.gnu.org/licenses or write to 021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 022 * Boston, MA, 02110-1301 USA, or download the license from the following URL: 023 * http://itextpdf.com/terms-of-use/ 024 * 025 * The interactive user interfaces in modified source and object code versions 026 * of this program must display Appropriate Legal Notices, as required under 027 * Section 5 of the GNU Affero General Public License. 028 * 029 * In accordance with Section 7(b) of the GNU Affero General Public License, 030 * a covered work must retain the producer line in every PDF that is created 031 * or manipulated using iText. 032 * 033 * You can be released from the requirements of the license by purchasing 034 * a commercial license. Buying such a license is mandatory as soon as you 035 * develop commercial activities involving the iText software without 036 * disclosing the source code of your own applications. 037 * These activities include: offering paid services to customers as an ASP, 038 * serving PDFs on the fly in a web application, shipping iText with a closed 039 * source product. 040 * 041 * For more information, please contact iText Software Corp. at this 042 * address: sales@itextpdf.com 043 */ 044package com.itextpdf.text.pdf; 045 046import com.itextpdf.text.SplitCharacter; 047 048/** 049 * The default class that is used to determine whether or not a character 050 * is a split character. You can subclass this class to define your own 051 * split characters. 052 * @since 2.1.2 053 */ 054public class DefaultSplitCharacter implements SplitCharacter { 055 056 /** 057 * An instance of the default SplitCharacter. 058 */ 059 public static final SplitCharacter DEFAULT = new DefaultSplitCharacter(); 060 061 /** 062 * Checks if a character can be used to split a <CODE>PdfString</CODE>. 063 * <P> 064 * for the moment every character less than or equal to SPACE, the character '-' 065 * and some specific unicode ranges are 'splitCharacters'. 066 * 067 * @param start start position in the array 068 * @param current current position in the array 069 * @param end end position in the array 070 * @param cc the character array that has to be checked 071 * @param ck chunk array 072 * @return <CODE>true</CODE> if the character can be used to split a string, <CODE>false</CODE> otherwise 073 */ 074 public boolean isSplitCharacter(int start, int current, int end, char[] cc, PdfChunk[] ck) { 075 char c = getCurrentCharacter(current, cc, ck); 076 if (c <= ' ' || c == '-' || c == '\u2010') { 077 return true; 078 } 079 if (c < 0x2002) 080 return false; 081 return ((c >= 0x2002 && c <= 0x200b) 082 || (c >= 0x2e80 && c < 0xd7a0) 083 || (c >= 0xf900 && c < 0xfb00) 084 || (c >= 0xfe30 && c < 0xfe50) 085 || (c >= 0xff61 && c < 0xffa0)); 086 } 087 088 /** 089 * Returns the current character 090 * @param current current position in the array 091 * @param cc the character array that has to be checked 092 * @param ck chunk array 093 * @return the current character 094 */ 095 protected char getCurrentCharacter(int current, char[] cc, PdfChunk[] ck) { 096 if (ck == null) { 097 return cc[current]; 098 } 099 return (char)ck[Math.min(current, ck.length - 1)].getUnicodeEquivalent(cc[current]); 100 } 101}