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,
35 Hashtable hints) throws WriterException {
36 if (format != BarcodeFormat.ITF) {
37 throw new IllegalArgumentException("Can only encode ITF, but got " + format);
40 return super.encode(contents, format, width, height, hints);
43 public byte[] encode(String contents) {
44 int length = contents.length();
46 throw new IllegalArgumentException(
47 "Requested contents should be less than 80 digits long, but got " + length);
49 byte[] result = new byte[9 + 9 * length];
50 int[] start = {1, 1, 1, 1};
51 int pos = appendPattern(result, 0, start, 1);
52 for (int i = 0; i < length; i += 2) {
53 int one = Character.digit(contents.charAt(i), 10);
54 int two = Character.digit(contents.charAt(i+1), 10);
55 int[] encoding = new int[18];
56 for (int j = 0; j < 10; j += 2) {
57 encoding[j] = ITFReader.PATTERNS[one][j];
58 encoding[j + 1] = ITFReader.PATTERNS[two][j];
60 pos += appendPattern(result, pos, encoding, 1);
62 int[] end = {3, 1, 1};
63 pos += appendPattern(result, pos, end, 1);