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71 lines
2.5 KiB
71 lines
2.5 KiB
8 years ago
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/*
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* QR Code generator demo (C)
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*
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* Run this command-line program with no arguments. The program
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* computes a demonstration QR Codes and print it to the console.
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*
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* Copyright (c) Project Nayuki
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* https://www.nayuki.io/page/qr-code-generator-library
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*
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* (MIT License)
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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* - The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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* - The Software is provided "as is", without warranty of any kind, express or
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* implied, including but not limited to the warranties of merchantability,
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* fitness for a particular purpose and noninfringement. In no event shall the
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* authors or copyright holders be liable for any claim, damages or other
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* liability, whether in an action of contract, tort or otherwise, arising from,
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* out of or in connection with the Software or the use or other dealings in the
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* Software.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "qrcodegen.h"
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// Function prototypes
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static void doBasicDemo(void);
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static void printQr(const uint8_t qrcode[], int version);
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// The main application program.
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int main(void) {
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doBasicDemo();
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return EXIT_SUCCESS;
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}
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// Creates a single QR Code, then prints it to the console.
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static void doBasicDemo() {
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const char *text = "Hello, world!"; // User-supplied text
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enum qrcodegen_Ecc errCorLvl = qrcodegen_Ecc_LOW; // Error correction level
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// Make and print the QR Code symbol
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uint8_t qrcode[qrcodegen_BUFFER_LEN_MAX];
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uint8_t tempBuffer[qrcodegen_BUFFER_LEN_MAX];
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int version = qrcodegen_encodeText(text, tempBuffer, qrcode, errCorLvl, 1, 40, qrcodegen_Mask_AUTO, true);
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if (version != 0)
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printQr(qrcode, version);
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}
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// Prints the given QR Code to the console.
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static void printQr(const uint8_t qrcode[], int version) {
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int size = qrcodegen_getSize(version);
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int border = 4;
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for (int y = -border; y < size + border; y++) {
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for (int x = -border; x < size + border; x++) {
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fputs((qrcodegen_getModule(qrcode, version, x, y) ? "##" : " "), stdout);
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}
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fputs("\n", stdout);
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}
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}
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