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/*
* $Id: PdfBarcode.java,v 1.16 2002/06/20 13:28:22 blowagie Exp $
* $Name: $
*
* Copyright 2001, 2002 Bruno Lowagie
*
*
* 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.
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) 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.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*
* 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();
}
}
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