/* * $Id: PdfBarcode.java,v 1.16 2002/06/20 13:28:22 blowagie Exp $ * $Name:  $ * * Copyright 2001, 2002 Bruno Lowagie * * 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.lowagie.text.pdf;/** * A barcode is a Chunk with a certain type of barcode font. * <P> * With this class you can construct several types of barcode * in different sizes, representing any 'product' or 'article' number. */public class PdfBarcode extends com.lowagie.text.Chunk {        /** This is a type of barcode. */    public static final int CODE39 = 1;        /** This is a type of barcode. */    public static final int UPCA = 2;        /** This is a type of barcode. */    public static final int EAN13 = 3;        /** This is a type of barcode. */    public static final int INTERLEAVED_2_OF_5 = 4;        /** The variable parity table in EAN 13 */    public static final int[][] variableParity =    { {0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2},    {0, 0, 1, 0, 1, 1, 2, 2, 2, 2, 2, 2},    {0, 0, 1, 1, 0, 1, 2, 2, 2, 2, 2, 2},    {0, 0, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2},    {0, 1, 0, 0, 1, 1, 2, 2, 2, 2, 2, 2},    {0, 1, 1, 0, 0, 1, 2, 2, 2, 2, 2, 2},    {0, 1, 1, 1, 0, 0, 2, 2, 2, 2, 2, 2},    {0, 1, 0, 1, 0, 1, 2, 2, 2, 2, 2, 2},    {0, 1, 0, 1, 1, 0, 2, 2, 2, 2, 2, 2},    {0, 1, 1, 0, 1, 0, 2, 2, 2, 2, 2, 2} };        /**     * Creates a new Barcode.     *     * @param   ttf     the ttf file representing the barcode font     * @param   size    the size of the barcode     * @param   number  the number you want to convert to a barcode in String format     */        public PdfBarcode(String ttf, int type, int size, String number) throws com.lowagie.text.BadElementException, com.lowagie.text.DocumentException, java.io.IOException {        super(convertToCode(type, number), new com.lowagie.text.Font(BaseFont.createFont(ttf, "winansi", true), size));    }        /**     * Creates a new Barcode.     *     * @param   ttf     the ttf file representing the barcode font     * @param   size    the size of the barcode     * @param   number  the number you want to convert to a barcode in long format     */        public PdfBarcode(String ttf, int type, int size, long number) throws com.lowagie.text.BadElementException, com.lowagie.text.DocumentException, java.io.IOException {        super(convertToCode(type, String.valueOf(number)), new com.lowagie.text.Font(BaseFont.createFont(ttf, "winansi", true), size));    }        /**     * Converts a String representing a number to a barcode with a specific barcode font.     *     * @param   type    the type of barcode     * @param   number  the number you want to convert to a barcode in long format     */        private static String convertToCode(int type, String number) throws com.lowagie.text.BadElementException {        StringBuffer code = new StringBuffer();        int length = number.length();        int digit;        int pos = 0;        try {            switch(type) {                case CODE39:                    code.append('*');                    while (pos < length) {                        code.append(number.substring(pos, ++pos));                    }                    code.append('*');                    break;                case UPCA:                    if (length > 12) throw new com.lowagie.text.BadElementException("An UPC-A barcode can only encode a 12 digit number (your number was " + number + ").");                    number = addZero(number, 12);                    digit = Integer.parseInt(number.substring(pos, ++pos));                    code.append((char) (digit + 80));                    while (pos < 6) {                        digit = Integer.parseInt(number.substring(pos, ++pos));                        code.append((char) (digit + 48));                    }                    code.append((char) 112);                    while (pos < 11) {                        digit = Integer.parseInt(number.substring(pos, ++pos));                        code.append((char) (digit + 64));                    }                    digit = Integer.parseInt(number.substring(11));                    code.append((char) (digit + 96));                    break;                case EAN13:                    if (length > 13) throw new com.lowagie.text.BadElementException("An EAN-13 barcode can only encode a 13 digit number (your number was " + number + ").");                    number = addZero(number, 13);                    int firstdigit = Integer.parseInt(number.substring(pos, ++pos));                    code.append((char) (firstdigit + 33));                    digit = Integer.parseInt(number.substring(pos, ++pos));                    code.append((char) (digit + 96));                    while (pos < 7) {                        digit = Integer.parseInt(number.substring(pos, ++pos));                        code.append((char) (digit + 48 + 16 * variableParity[firstdigit][pos - 2]));                    }                    code.append((char) 124);                    while (pos < 12) {                        digit = Integer.parseInt(number.substring(pos, ++pos));                        code.append((char) (digit + 48 + 16 * variableParity[firstdigit][pos - 2]));                    }                    digit = Integer.parseInt(number.substring(12));                    code.append((char) (digit + 112));                    break;                case INTERLEAVED_2_OF_5:                    if (length % 2 == 1) {                        number = addZero(number, length + 1);                    }                    code.append('(');                    while (number.length() > 2) {                        digit = Integer.parseInt(number.substring(0, 2));                        code.append(convertInterleaved(digit));                        pos += 2;                        number = number.substring(2);                    }                    digit = Integer.parseInt(number);                    code.append(convertInterleaved(digit));                    code.append(')');                    break;                default:                    throw new com.lowagie.text.BadElementException("This type of barcode is not supported yet: " + type);            }        }        catch(NumberFormatException nfe) {            throw new com.lowagie.text.BadElementException("NumberFormatException at position " + pos + " in " + number + ": " + nfe.getMessage());        }        return code.toString();    }        /**     * Converts an int to a convert interleaved character.     */        private static char convertInterleaved(int digits) throws NumberFormatException {        int i;        if (digits < 50) {            i = 48;        }        else if (digits < 100) {            i = 142;        }        else {            throw new NumberFormatException(String.valueOf(digits));        }        return (char)(digits + i);    }        /**     * Adds leading zeros.     */        private static String addZero(String number, int length) {        StringBuffer buf = new StringBuffer();        int zeros = length - number.length();        for (int i = 0; i < zeros; i++) {            buf.append('0');        }        buf.append(number);        return buf.toString();    }}