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>
44 * @author dswitkin@google.com (Daniel Switkin)
46 public final class CommandLineRunner {
48 private CommandLineRunner() {
51 public static void main(String[] args) throws Exception {
52 Hashtable<DecodeHintType, Object> hints = null;
53 boolean dumpResults = false;
54 for (String arg : args) {
55 if ("--try_harder".equals(arg)) {
56 hints = new Hashtable<DecodeHintType, Object>(3);
57 hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
58 } else if ("--dump_results".equals(arg)) {
60 } else if (arg.startsWith("--")) {
61 System.out.println("Unknown command line option " + arg);
65 for (String arg : args) {
66 if (!arg.startsWith("--")) {
67 decodeOneArgument(arg, hints, dumpResults);
72 private static void decodeOneArgument(String argument, Hashtable<DecodeHintType, Object> hints,
73 boolean dumpResults) throws Exception {
75 File inputFile = new File(argument);
76 if (inputFile.exists()) {
77 if (inputFile.isDirectory()) {
80 for (File input : inputFile.listFiles()) {
81 String filename = input.getName().toLowerCase();
82 // Skip hidden files and text files (the latter is found in the blackbox tests).
83 if (filename.startsWith(".") || filename.endsWith(".txt")) {
86 Result result = decode(input.toURI(), hints);
90 dumpResult(input, result);
95 System.out.println("\nDecoded " + successful + " files out of " + total +
96 " successfully (" + (successful * 100 / total) + "%)\n");
98 Result result = decode(inputFile.toURI(), hints);
100 dumpResult(inputFile, result);
104 decode(new URI(argument), hints);
108 private static void dumpResult(File input, Result result) throws IOException {
109 String name = input.getAbsolutePath();
110 int pos = name.lastIndexOf('.');
112 name = name.substring(0, pos);
114 File dump = new File(name + ".txt");
115 writeStringToFile(result.getText(), dump);
118 private static void writeStringToFile(String value, File file) throws IOException {
119 Writer out = new OutputStreamWriter(new FileOutputStream(file), Charset.forName("UTF8"));
127 private static Result decode(URI uri, Hashtable<DecodeHintType, Object> hints) throws IOException {
130 image = ImageIO.read(uri.toURL());
131 } catch (IllegalArgumentException iae) {
132 throw new FileNotFoundException("Resource not found: " + uri);
135 System.err.println(uri.toString() + ": Could not load image");
139 MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(image);
140 Result result = new MultiFormatReader().decode(source, hints);
141 System.out.println(uri.toString() + " (format: " + result.getBarcodeFormat() + "):\n" +
144 } catch (ReaderException e) {
145 System.out.println(uri.toString() + ": No barcode found");