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.FileNotFoundException;
29 import java.io.FileOutputStream;
30 import java.io.IOException;
31 import java.io.OutputStreamWriter;
32 import java.io.Writer;
34 import java.util.Hashtable;
35 import java.nio.charset.Charset;
38 * <p>This simple command line utility decodes files, directories of files, or URIs which are passed
39 * as arguments. By default it uses the normal decoding algorithms, but you can pass --try_harder to
40 * request that hint. The raw text of each barcode is printed, and when running against directories,
41 * summary statistics are also displayed.</p>
43 * @author srowen@google.com (Sean Owen), dswitkin@google.com (Daniel Switkin)
45 public final class CommandLineRunner {
47 private CommandLineRunner() {
50 public static void main(String[] args) throws Exception {
51 Hashtable<DecodeHintType, Object> hints = null;
52 boolean dumpResults = false;
53 for (String arg : args) {
54 if ("--try_harder".equals(arg)) {
55 hints = new Hashtable<DecodeHintType, Object>(3);
56 hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
57 } else if ("--dump_results".equals(arg)) {
59 } else if (arg.startsWith("--")) {
60 System.out.println("Unknown command line option " + arg);
64 for (String arg : args) {
65 if (!arg.startsWith("--")) {
66 decodeOneArgument(arg, hints, dumpResults);
71 private static void decodeOneArgument(String argument, Hashtable<DecodeHintType, Object> hints,
72 boolean dumpResults) throws Exception {
74 File inputFile = new File(argument);
75 if (inputFile.exists()) {
76 if (inputFile.isDirectory()) {
79 for (File input : inputFile.listFiles()) {
80 String filename = input.getName().toLowerCase();
81 // Skip hidden files and text files (the latter is found in the blackbox tests).
82 if (filename.startsWith(".") || filename.endsWith(".txt")) {
85 Result result = decode(input.toURI(), hints);
89 dumpResult(input, result);
94 System.out.println("\nDecoded " + successful + " files out of " + total +
95 " successfully (" + (successful * 100 / total) + "%)\n");
97 Result result = decode(inputFile.toURI(), hints);
99 dumpResult(inputFile, result);
103 decode(new URI(argument), hints);
107 private static void dumpResult(File input, Result result) throws IOException {
108 String name = input.getAbsolutePath();
109 int pos = name.lastIndexOf('.');
111 name = name.substring(0, pos);
113 File dump = new File(name + ".txt");
114 writeStringToFile(result.getText(), dump);
117 private static void writeStringToFile(String value, File file) throws IOException {
118 Writer out = new OutputStreamWriter(new FileOutputStream(file), Charset.forName("UTF8"));
126 private static Result decode(URI uri, Hashtable<DecodeHintType, Object> hints) throws IOException {
129 image = ImageIO.read(uri.toURL());
130 } catch (IllegalArgumentException iae) {
131 throw new FileNotFoundException("Resource not found: " + uri);
134 System.err.println(uri.toString() + ": Could not load image");
138 MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(image);
139 Result result = new MultiFormatReader().decode(source, hints);
140 System.out.println(uri.toString() + " (format: " + result.getBarcodeFormat() + "):\n" +
143 } catch (ReaderException e) {
144 System.out.println(uri.toString() + ": No barcode found");