2 * Copyright 2007 Google Inc.
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.client.j2se;
19 import com.google.zxing.DecodeHintType;
20 import com.google.zxing.MultiFormatReader;
21 import com.google.zxing.ReaderException;
22 import com.google.zxing.MonochromeBitmapSource;
24 import javax.imageio.ImageIO;
25 import java.awt.image.BufferedImage;
27 import java.io.IOException;
29 import java.util.Hashtable;
32 * <p>This simple command line utility decodes files, directories of files, or URIs which are passed
33 * as arguments. By default it uses the normal decoding algorithms, but you can pass --try_harder to
34 * request that hint. The raw text of each barcode is printed, and when running against directories,
35 * summary statistics are also displayed.</p>
37 * @author srowen@google.com (Sean Owen), dswitkin@google.com (Daniel Switkin)
39 public final class CommandLineRunner {
41 private static Hashtable<DecodeHintType, Object> hints = null;
43 private CommandLineRunner() {
46 public static void main(String[] args) throws Exception {
47 for (int x = 0; x < args.length; x++) {
48 if (args[x].equals("--try_harder")) {
49 hints = new Hashtable<DecodeHintType, Object>(3);
50 hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
51 } else if (args[x].startsWith("--")) {
52 System.out.println("Unknown command line option " + args[x]);
56 for (int x = 0; x < args.length; x++) {
57 if (!args[x].startsWith("--")) {
58 decodeOneArgument(args[x]);
63 private static void decodeOneArgument(String argument) throws Exception {
64 File inputFile = new File(argument);
65 if (inputFile.exists()) {
66 if (inputFile.isDirectory()) {
69 for (File input : inputFile.listFiles()) {
70 String filename = input.getName().toLowerCase();
71 // Skip hidden files and text files (the latter is found in the blackbox tests).
72 if (filename.startsWith(".") || filename.endsWith(".txt")) {
75 if (decode(input.toURI())) {
80 System.out.println("\nDecoded " + successful + " files out of " + total +
81 " successfully (" + (successful * 100 / total) + "%)\n");
83 decode(inputFile.toURI());
86 decode(new URI(argument));
90 private static boolean decode(URI uri) throws IOException {
91 BufferedImage image = ImageIO.read(uri.toURL());
93 System.err.println(uri.toString() + ": Could not load image");
97 MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(image);
98 String result = new MultiFormatReader().decode(source, hints).getText();
99 System.out.println(uri.toString() + ": " + result);
101 } catch (ReaderException e) {
102 System.out.println(uri.toString() + ": No barcode found");