com.aowagie.text.pdf.DefaultSplitCharacter Maven / Gradle / Ivy
/*
* $Id: DefaultSplitCharacter.java 3427 2008-05-24 18:32:31Z xlv $
*
* Copyright 2008 Bruno Lowagie and Xavier Le Vourch
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.aowagie.text.pdf;
import com.aowagie.text.SplitCharacter;
/**
* The default class that is used to determine whether or not a character
* is a split character. You can subclass this class to define your own
* split characters.
* @since 2.1.2
*/
class DefaultSplitCharacter implements SplitCharacter {
/**
* An instance of the default SplitCharacter.
*/
static final SplitCharacter DEFAULT = new DefaultSplitCharacter();
/**
* Checks if a character can be used to split a PdfString.
*
* for the moment every character less than or equal to SPACE, the character '-'
* and some specific unicode ranges are 'splitCharacters'.
*
* @param start start position in the array
* @param current current position in the array
* @param end end position in the array
* @param cc the character array that has to be checked
* @param ck chunk array
* @return true if the character can be used to split a string, false otherwise
*/
@Override
public boolean isSplitCharacter(final int start, final int current, final int end, final char[] cc, final PdfChunk[] ck) {
final char c = getCurrentCharacter(current, cc, ck);
if (c <= ' ' || c == '-' || c == '\u2010') {
return true;
}
if (c < 0x2002) {
return false;
}
return c >= 0x2002 && c <= 0x200b
|| c >= 0x2e80 && c < 0xd7a0
|| c >= 0xf900 && c < 0xfb00
|| c >= 0xfe30 && c < 0xfe50
|| c >= 0xff61 && c < 0xffa0;
}
/**
* Returns the current character
* @param current current position in the array
* @param cc the character array that has to be checked
* @param ck chunk array
* @return the current character
*/
private char getCurrentCharacter(final int current, final char[] cc, final PdfChunk[] ck) {
if (ck == null) {
return cc[current];
}
return (char)ck[Math.min(current, ck.length - 1)].getUnicodeEquivalent(cc[current]);
}
}