/* * QR Code generator test worker (Java) * * This program reads data and encoding parameters from standard input and writes * QR Code bitmaps to standard output. The I/O format is one integer per line. * Run with no command line arguments. The program is intended for automated * batch testing of end-to-end functionality of this QR Code generator library. * * Copyright (c) Project Nayuki. (MIT License) * https://www.nayuki.io/page/qr-code-generator-library * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of * the Software, and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * - The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * - The Software is provided "as is", without warranty of any kind, express or * implied, including but not limited to the warranties of merchantability, * fitness for a particular purpose and noninfringement. In no event shall the * authors or copyright holders be liable for any claim, damages or other * liability, whether in an action of contract, tort or otherwise, arising from, * out of or in connection with the Software or the use or other dealings in the * Software. */ package io.nayuki.qrcodegen; import java.nio.charset.StandardCharsets; import java.util.Arrays; import java.util.List; import java.util.Scanner; public final class QrCodeGeneratorWorker { public static void main(String[] args) { // Set up input stream and start loop try (Scanner input = new Scanner(System.in, "US-ASCII")) { input.useDelimiter("\r\n|\n|\r"); while (processCase(input)); } } private static boolean processCase(Scanner input) { // Read data length or exit int length = input.nextInt(); if (length == -1) return false; if (length > Short.MAX_VALUE) throw new RuntimeException(); // Read data bytes boolean isAscii = true; byte[] data = new byte[length]; for (int i = 0; i < data.length; i++) { int b = input.nextInt(); if (b < 0 || b > 255) throw new RuntimeException(); data[i] = (byte)b; isAscii &= b < 128; } // Read encoding parameters int errCorLvl = input.nextInt(); int minVersion = input.nextInt(); int maxVersion = input.nextInt(); int mask = input.nextInt(); int boostEcl = input.nextInt(); if (!(0 <= errCorLvl && errCorLvl <= 3) || !(-1 <= mask && mask <= 7) || (boostEcl >>> 1) != 0 || !(QrCode.MIN_VERSION <= minVersion && minVersion <= maxVersion && maxVersion <= QrCode.MAX_VERSION)) throw new RuntimeException(); // Make segments for encoding List segs; if (isAscii) segs = QrSegment.makeSegments(new String(data, StandardCharsets.US_ASCII)); else segs = Arrays.asList(QrSegment.makeBytes(data)); try { // Try to make QR Code symbol QrCode qr = QrCode.encodeSegments(segs, QrCode.Ecc.values()[errCorLvl], minVersion, maxVersion, mask, boostEcl != 0); // Print grid of modules System.out.println(qr.version); for (int y = 0; y < qr.size; y++) { for (int x = 0; x < qr.size; x++) System.out.println(qr.getModule(x, y) ? 1 : 0); } } catch (IllegalArgumentException e) { if (!e.getMessage().equals("Data too long")) throw e; System.out.println(-1); } System.out.flush(); return true; } }