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QR-Code-generator
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Added examples of custom segments to C demo program.

This commit is contained in:
Project Nayuki 2017-09-09 15:55:05 +00:00
parent 202fdd39d3
commit c4c8d6ba45
1 changed files with 125 additions and 0 deletions
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125
c/qrcodegen-demo.c
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@ -25,14 +25,17 @@
*/
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "qrcodegen.h"
// Function prototypes
static void doBasicDemo(void);
static void doVarietyDemo(void);
static void doSegmentDemo(void);
static void printQr(const uint8_t qrcode[]);
@ -41,6 +44,7 @@ static void printQr(const uint8_t qrcode[]);
int main(void) {
doBasicDemo();
doVarietyDemo();
doSegmentDemo();
return EXIT_SUCCESS;
}
@ -135,6 +139,127 @@ static void doVarietyDemo(void) {
}
static void doSegmentDemo(void) {
{ // Illustration "silver"
const char *silver0 = "THE SQUARE ROOT OF 2 IS 1.";
const char *silver1 = "41421356237309504880168872420969807856967187537694807317667973799";
uint8_t qrcode[qrcodegen_BUFFER_LEN_MAX];
uint8_t tempBuffer[qrcodegen_BUFFER_LEN_MAX];
bool ok;
{
char *concat = calloc(strlen(silver0) + strlen(silver1) + 1, sizeof(char));
strcat(concat, silver0);
strcat(concat, silver1);
ok = qrcodegen_encodeText(concat, tempBuffer, qrcode, qrcodegen_Ecc_LOW,
qrcodegen_VERSION_MIN, qrcodegen_VERSION_MAX, qrcodegen_Mask_AUTO, true);
if (ok)
printQr(qrcode);
free(concat);
}
{
uint8_t *segBuf0 = malloc(qrcodegen_calcSegmentBufferSize(qrcodegen_Mode_ALPHANUMERIC, strlen(silver0)) * sizeof(uint8_t));
uint8_t *segBuf1 = malloc(qrcodegen_calcSegmentBufferSize(qrcodegen_Mode_NUMERIC, strlen(silver1)) * sizeof(uint8_t));
struct qrcodegen_Segment segs[] = {
qrcodegen_makeAlphanumeric(silver0, segBuf0),
qrcodegen_makeNumeric(silver1, segBuf1),
};
ok = qrcodegen_encodeSegments(segs, sizeof(segs) / sizeof(segs[0]), qrcodegen_Ecc_LOW, tempBuffer, qrcode);
free(segBuf0);
free(segBuf1);
if (ok)
printQr(qrcode);
}
}
{ // Illustration "golden"
const char *golden0 = "Golden ratio \xCF\x86 = 1.";
const char *golden1 = "6180339887498948482045868343656381177203091798057628621354486227052604628189024497072072041893911374";
const char *golden2 = "......";
uint8_t qrcode[qrcodegen_BUFFER_LEN_MAX];
uint8_t tempBuffer[qrcodegen_BUFFER_LEN_MAX];
bool ok;
{
char *concat = calloc(strlen(golden0) + strlen(golden1) + strlen(golden2) + 1, sizeof(char));
strcat(concat, golden0);
strcat(concat, golden1);
strcat(concat, golden2);
ok = qrcodegen_encodeText(concat, tempBuffer, qrcode, qrcodegen_Ecc_LOW,
qrcodegen_VERSION_MIN, qrcodegen_VERSION_MAX, qrcodegen_Mask_AUTO, true);
if (ok)
printQr(qrcode);
free(concat);
}
{
uint8_t *bytes = malloc(strlen(golden0) * sizeof(uint8_t));
for (size_t i = 0, len = strlen(golden0); i < len; i++)
bytes[i] = (uint8_t)golden0[i];
uint8_t *segBuf0 = malloc(qrcodegen_calcSegmentBufferSize(qrcodegen_Mode_BYTE, strlen(golden0)) * sizeof(uint8_t));
uint8_t *segBuf1 = malloc(qrcodegen_calcSegmentBufferSize(qrcodegen_Mode_NUMERIC, strlen(golden1)) * sizeof(uint8_t));
uint8_t *segBuf2 = malloc(qrcodegen_calcSegmentBufferSize(qrcodegen_Mode_ALPHANUMERIC, strlen(golden2)) * sizeof(uint8_t));
struct qrcodegen_Segment segs[] = {
qrcodegen_makeBytes(bytes, strlen(golden0), segBuf0),
qrcodegen_makeNumeric(golden1, segBuf1),
qrcodegen_makeAlphanumeric(golden2, segBuf2),
};
free(bytes);
ok = qrcodegen_encodeSegments(segs, sizeof(segs) / sizeof(segs[0]), qrcodegen_Ecc_LOW, tempBuffer, qrcode);
free(segBuf0);
free(segBuf1);
free(segBuf2);
if (ok)
printQr(qrcode);
}
}
{ // Illustration "Madoka": kanji, kana, Greek, Cyrillic, full-width Latin characters
uint8_t qrcode[qrcodegen_BUFFER_LEN_MAX];
uint8_t tempBuffer[qrcodegen_BUFFER_LEN_MAX];
bool ok;
{
const char *madoka = // Encoded in UTF-8
"\xE3\x80\x8C\xE9\xAD\x94\xE6\xB3\x95\xE5"
"\xB0\x91\xE5\xA5\xB3\xE3\x81\xBE\xE3\x81"
"\xA9\xE3\x81\x8B\xE2\x98\x86\xE3\x83\x9E"
"\xE3\x82\xAE\xE3\x82\xAB\xE3\x80\x8D\xE3"
"\x81\xA3\xE3\x81\xA6\xE3\x80\x81\xE3\x80"
"\x80\xD0\x98\xD0\x90\xD0\x98\xE3\x80\x80"
"\xEF\xBD\x84\xEF\xBD\x85\xEF\xBD\x93\xEF"
"\xBD\x95\xE3\x80\x80\xCE\xBA\xCE\xB1\xEF"
"\xBC\x9F";
ok = qrcodegen_encodeText(madoka, tempBuffer, qrcode, qrcodegen_Ecc_LOW,
qrcodegen_VERSION_MIN, qrcodegen_VERSION_MAX, qrcodegen_Mask_AUTO, true);
if (ok)
printQr(qrcode);
}
{
const int kanjiChars[] = { // Kanji mode encoding (13 bits per character)
0x0035, 0x1002, 0x0FC0, 0x0AED, 0x0AD7,
0x015C, 0x0147, 0x0129, 0x0059, 0x01BD,
0x018D, 0x018A, 0x0036, 0x0141, 0x0144,
0x0001, 0x0000, 0x0249, 0x0240, 0x0249,
0x0000, 0x0104, 0x0105, 0x0113, 0x0115,
0x0000, 0x0208, 0x01FF, 0x0008,
};
size_t len = sizeof(kanjiChars) / sizeof(kanjiChars[0]);
uint8_t *segBuf = calloc(qrcodegen_calcSegmentBufferSize(qrcodegen_Mode_KANJI, len), sizeof(uint8_t));
struct qrcodegen_Segment seg;
seg.mode = qrcodegen_Mode_KANJI;
seg.numChars = len;
seg.bitLength = 0;
for (size_t i = 0; i < len; i++) {
for (int j = 12; j >= 0; j--, seg.bitLength++)
segBuf[seg.bitLength >> 3] |= ((kanjiChars[i] >> j) & 1) << (7 - (seg.bitLength & 7));
}
seg.data = segBuf;
ok = qrcodegen_encodeSegments(&seg, 1, qrcodegen_Ecc_LOW, tempBuffer, qrcode);
free(segBuf);
if (ok)
printQr(qrcode);
}
}
}
// Prints the given QR Code to the console.
static void printQr(const uint8_t qrcode[]) {
int size = qrcodegen_getSize(qrcode);