2 * Copyright 2010 ZXing authors
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.google.zxing.oned;
19 import java.util.Hashtable;
20 import com.google.zxing.BarcodeFormat;
21 import com.google.zxing.WriterException;
22 import com.google.zxing.common.BitMatrix;
25 * This object renders a ITF code as a {@link BitMatrix}.
27 * @author erik.barbara@gmail.com (Erik Barbara)
29 public final class ITFWriter extends UPCEANWriter {
31 public BitMatrix encode(String contents, BarcodeFormat format, int width, int height,
32 Hashtable hints) throws WriterException {
33 if (format != BarcodeFormat.ITF) {
34 throw new IllegalArgumentException("Can only encode ITF, but got " + format);
37 return super.encode(contents, format, width, height, hints);
40 public byte[] encode(String contents) {
41 int length = contents.length();
43 throw new IllegalArgumentException(
44 "Requested contents should be less than 80 digits long, but got " + length);
46 byte[] result = new byte[9 + 9 * length];
47 int[] start = {1, 1, 1, 1};
48 int pos = appendPattern(result, 0, start, 1);
49 for (int i = 0; i < length; i += 2) {
50 int one = Character.digit(contents.charAt(i), 10);
51 int two = Character.digit(contents.charAt(i+1), 10);
52 int[] encoding = new int[18];
53 for (int j = 0; j < 10; j += 2) {
54 encoding[j] = ITFReader.PATTERNS[one][j];
55 encoding[j + 1] = ITFReader.PATTERNS[two][j];
57 pos += appendPattern(result, pos, encoding, 1);
59 int[] end = {3, 1, 1};
60 pos += appendPattern(result, pos, end, 1);