2 * Copyright 2007 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.client.j2se;
19 import com.google.zxing.DecodeHintType;
20 import com.google.zxing.MonochromeBitmapSource;
21 import com.google.zxing.MultiFormatReader;
22 import com.google.zxing.ReaderException;
23 import com.google.zxing.Result;
25 import javax.imageio.ImageIO;
26 import java.awt.image.BufferedImage;
28 import java.io.IOException;
29 import java.io.FileNotFoundException;
31 import java.util.Hashtable;
34 * <p>This simple command line utility decodes files, directories of files, or URIs which are passed
35 * as arguments. By default it uses the normal decoding algorithms, but you can pass --try_harder to
36 * request that hint. The raw text of each barcode is printed, and when running against directories,
37 * summary statistics are also displayed.</p>
39 * @author srowen@google.com (Sean Owen), dswitkin@google.com (Daniel Switkin)
41 public final class CommandLineRunner {
43 private CommandLineRunner() {
46 public static void main(String[] args) throws Exception {
47 Hashtable<DecodeHintType, Object> hints = null;
48 for (String arg : args) {
49 if ("--try_harder".equals(arg)) {
50 hints = new Hashtable<DecodeHintType, Object>(3);
51 hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
52 } else if (arg.startsWith("--")) {
53 System.out.println("Unknown command line option " + arg);
57 for (String arg : args) {
58 if (!arg.startsWith("--")) {
59 decodeOneArgument(arg, hints);
64 private static void decodeOneArgument(String argument, Hashtable<DecodeHintType, Object> hints)
66 File inputFile = new File(argument);
67 if (inputFile.exists()) {
68 if (inputFile.isDirectory()) {
71 for (File input : inputFile.listFiles()) {
72 String filename = input.getName().toLowerCase();
73 // Skip hidden files and text files (the latter is found in the blackbox tests).
74 if (filename.startsWith(".") || filename.endsWith(".txt")) {
77 if (decode(input.toURI(), hints)) {
82 System.out.println("\nDecoded " + successful + " files out of " + total +
83 " successfully (" + (successful * 100 / total) + "%)\n");
85 decode(inputFile.toURI(), hints);
88 decode(new URI(argument), hints);
92 private static boolean decode(URI uri, Hashtable<DecodeHintType, Object> hints) throws IOException {
95 image = ImageIO.read(uri.toURL());
96 } catch (IllegalArgumentException iae) {
97 throw new FileNotFoundException("Resource not found: " + uri);
100 System.err.println(uri.toString() + ": Could not load image");
104 MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(image);
105 Result result = new MultiFormatReader().decode(source, hints);
106 System.out.println(uri.toString() + " (format: " + result.getBarcodeFormat() + "):\n" +
109 } catch (ReaderException e) {
110 System.out.println(uri.toString() + ": No barcode found");