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;
24 import com.google.zxing.client.result.ParsedResult;
25 import com.google.zxing.client.result.ResultParser;
27 import javax.imageio.ImageIO;
28 import java.awt.image.BufferedImage;
30 import java.io.FileNotFoundException;
31 import java.io.FileOutputStream;
32 import java.io.IOException;
33 import java.io.OutputStreamWriter;
34 import java.io.Writer;
36 import java.net.URISyntaxException;
37 import java.nio.charset.Charset;
38 import java.util.Hashtable;
41 * <p>This simple command line utility decodes files, directories of files, or URIs which are passed
42 * as arguments. By default it uses the normal decoding algorithms, but you can pass --try_harder to
43 * request that hint. The raw text of each barcode is printed, and when running against directories,
44 * summary statistics are also displayed.</p>
47 * @author dswitkin@google.com (Daniel Switkin)
49 public final class CommandLineRunner {
51 private CommandLineRunner() {
54 public static void main(String[] args) throws Exception {
55 Hashtable<DecodeHintType, Object> hints = null;
56 boolean dumpResults = false;
57 for (String arg : args) {
58 if ("--try_harder".equals(arg)) {
59 hints = new Hashtable<DecodeHintType, Object>(3);
60 hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
61 } else if ("--dump_results".equals(arg)) {
63 } else if (arg.startsWith("--")) {
64 System.out.println("Unknown command line option " + arg);
68 for (String arg : args) {
69 if (!arg.startsWith("--")) {
70 decodeOneArgument(arg, hints, dumpResults);
75 private static void decodeOneArgument(String argument, Hashtable<DecodeHintType, Object> hints,
76 boolean dumpResults) throws IOException, URISyntaxException {
78 File inputFile = new File(argument);
79 if (inputFile.exists()) {
80 if (inputFile.isDirectory()) {
83 for (File input : inputFile.listFiles()) {
84 String filename = input.getName().toLowerCase();
85 // Skip hidden files and text files (the latter is found in the blackbox tests).
86 if (filename.startsWith(".") || filename.endsWith(".txt")) {
89 Result result = decode(input.toURI(), hints);
93 dumpResult(input, result);
98 System.out.println("\nDecoded " + successful + " files out of " + total +
99 " successfully (" + (successful * 100 / total) + "%)\n");
101 Result result = decode(inputFile.toURI(), hints);
103 dumpResult(inputFile, result);
107 decode(new URI(argument), hints);
111 private static void dumpResult(File input, Result result) throws IOException {
112 String name = input.getAbsolutePath();
113 int pos = name.lastIndexOf('.');
115 name = name.substring(0, pos);
117 File dump = new File(name + ".txt");
118 writeStringToFile(result.getText(), dump);
121 private static void writeStringToFile(String value, File file) throws IOException {
122 Writer out = new OutputStreamWriter(new FileOutputStream(file), Charset.forName("UTF8"));
130 private static Result decode(URI uri, Hashtable<DecodeHintType, Object> hints) throws IOException {
133 image = ImageIO.read(uri.toURL());
134 } catch (IllegalArgumentException iae) {
135 throw new FileNotFoundException("Resource not found: " + uri);
138 System.err.println(uri.toString() + ": Could not load image");
142 MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(image);
143 Result result = new MultiFormatReader().decode(source, hints);
144 ParsedResult parsedResult = ResultParser.parseResult(result);
145 System.out.println(uri.toString() + " (format: " + result.getBarcodeFormat() +
146 ", type: " + parsedResult.getType() + "):\nRaw result:\n" + result.getText() +
147 "\nParsed result:\n" + parsedResult.getDisplayResult());
149 } catch (ReaderException e) {
150 System.out.println(uri.toString() + ": No barcode found");