C++ QRcode_free函数代码示例

void test_encode_kanji(int num)
{
	QRcode *qrcode;
	QRdata *qrdata;
	int len, ret;

	len = fill8bitString();

	qrcode = QRcode_encodeString((char *)data, 0, num % 4, QR_MODE_8, 1);
	if(qrcode == NULL) {
		if(errno == ERANGE) return;
		perror("test_encdoe_kanji aborted at QRcode_encodeString():");
		return;
	}
	qrdata = QRcode_decode(qrcode);
	if(qrdata == NULL) {
		printf("#%d: Failed to decode this code.\n", num);
		QRcode_free(qrcode);
		return;
	}
	if(qrdata->size != len) {
		printf("#%d: length mismatched (orig: %d, decoded: %d)\n", num, len, qrdata->size);
	}
	ret = memcmp(qrdata->data, data, len);
	if(ret != 0) {
		printf("#%d: data mismatched.\n", num);
	}
	QRdata_free(qrdata);
	QRcode_free(qrcode);
}

void test_encodeLongData(void)
{
	QRinput *stream;
	unsigned char data[7090];
	int maxlength[4][4] = {{7089,5596,3993,3057},
						   {4296,3391,2420,1852},
						   {2953,2331,1663,1273},
						   {1817*2,1435*2,1024*2, 784*2}};
	int i, l, len, ret;
	QRcode *qrcode;

	testStart("Encoding long data.");

	for(i=QR_MODE_NUM; i<=QR_MODE_KANJI; i++) {
		if(i != QR_MODE_KANJI) {
			memset(data, '0', maxlength[i][0] + 1);
		} else {
			for(l=0; l<=maxlength[i][0]/2+1; l++) {
				data[l*2] = 0x93; data[l*2+1] = 0x5f;
			}
		}
		for(l=QR_ECLEVEL_L; l<=QR_ECLEVEL_H; l++) {
			stream = QRinput_new2(0, l);
			ret = QRinput_append(stream, i, maxlength[i][l], data);
			assert_zero(ret, "Failed to add %d-byte %s to a QRinput\n", maxlength[i][l], modeStr[i]);
			qrcode = QRcode_encodeInput(stream);
			assert_nonnull(qrcode, "(QRcode_encodeInput) failed to encode %d-byte %s in level %d.\n", maxlength[i][l], modeStr[i], l);
			if(qrcode != NULL) {
				QRcode_free(qrcode);
			}
			QRinput_free(stream);

			stream = QRinput_new2(0, l);
			len = maxlength[i][l];
			if(i == QR_MODE_KANJI) {
				len += 2;
			} else {
				len += 1;
			}
			ret = QRinput_append(stream, i, len, data);
			if(ret == 0) {
				qrcode = QRcode_encodeInput(stream);
				assert_null(qrcode, "(QRcode_encodeInput) incorrectly succeeded to encode %d-byte %s in level %d.\n", len, modeStr[i], l);
				if(qrcode != NULL) {
					printf("version: %d\n", qrcode->version);
					QRcode_free(qrcode);
				}
			}
			QRinput_free(stream);
		}
	}

	testFinish();
}

void test_encodeData(void)
{
	QRcode *qrcode;

	testStart("Test QRencode_encodeData.");
	qrcode = QRcode_encodeData(0, NULL, 0, QR_ECLEVEL_H);
	assert_null(qrcode, "QRcode_encodeData(NULL, 0) returned something.\n");
	if(qrcode != NULL) QRcode_free(qrcode);

	qrcode = QRcode_encodeData(10, (unsigned char*)"test\0\0test", 0, QR_ECLEVEL_H);
	assert_nonnull(qrcode, "QRcode_encodeData() failed.\n");
	if(qrcode != NULL) QRcode_free(qrcode);

	testFinish();
}

void test_decodeVeryLong(void)
{
	char str[4000];
	int i;
	QRcode *qrcode;
	QRdata *qrdata;

	testStart("Test code words (very long string).");

	for(i=0; i<3999; i++) {
		str[i] = decodeAnTable[(int)drand(45)];
	}
	str[3999] = '\0';

	qrcode = QRcode_encodeString(str, 0, QR_ECLEVEL_L, QR_MODE_8, 0);
	qrdata = QRcode_decode(qrcode);

	assert_nonnull(qrdata, "Failed to decode.\n");
	if(qrdata != NULL) {
		assert_equal(strlen(str), qrdata->size, "Lengths of input/output mismatched.\n");
		assert_zero(strncmp(str, (char *)(qrdata->data), qrdata->size), "Decoded data %s is different from the original %s\n", qrdata->data, str);
	}
	if(qrdata != NULL) QRdata_free(qrdata);
	if(qrcode != NULL) QRcode_free(qrcode);

	testFinish();
}

void test_encodeTooLongMQR(void)
{
	QRcode *code;
	char *data[] = {"012345", "ABC0EFG", "0123456789", "0123456789ABCDEFG"};

	testStart("Encode too large data for MQR.");

	code = QRcode_encodeStringMQR(data[0], 1, QR_ECLEVEL_L, QR_MODE_8, 0);
	assert_null(code, "6 byte length numeric string was accepted to version 1.\n");
	assert_equal(errno, ERANGE, "errno != ERANGE\n");
	code = QRcode_encodeStringMQR(data[1], 2, QR_ECLEVEL_L, QR_MODE_8, 0);
	assert_null(code, "7 byte length alphanumeric string was accepted to version 2.\n");
	assert_equal(errno, ERANGE, "errno != ERANGE\n");
	code = QRcode_encodeString8bitMQR(data[2], 3, QR_ECLEVEL_L);
	assert_null(code, "9 byte length 8bit string was accepted to version 3.\n");
	assert_equal(errno, ERANGE, "errno != ERANGE\n");
	code = QRcode_encodeString8bitMQR(data[3], 4, QR_ECLEVEL_L);
	assert_null(code, "16 byte length 8bit string was accepted to version 4.\n");
	assert_equal(errno, ERANGE, "errno != ERANGE\n");
	testFinish();

	if(code != NULL) {
		printQRcode(code);
		QRcode_free(code);
	}
}

void QRcodeWidget::paintEvent(QPaintEvent *event)
{
    if (this->code != NULL) {
        QPainter painter(this);
        painter.setPen(Qt::NoPen);
        int codeWidth = code->width;
        
        int blkw = this->size().width() / codeWidth;
        int blkh = this->size().height() / codeWidth;
        
        for (int y = 0 ; y < codeWidth; y++) {
            for (int x = 0 ; x < codeWidth; x++) {
                int point = code->data[y * codeWidth + x];
                if (point & 1) {
                    painter.setBrush(QBrush(Qt::black));
                } else {
                    painter.setBrush(QBrush(Qt::white));
                }
                painter.drawRect(x * blkw, y * blkh, blkw, blkh);
            }
        }
        
        QRcode_free(code);
        code = NULL;
    }
    
}

void printQRCode(const char *url) {

	QRcode *qrcode = QRcode_encodeString("http://localhost/btctl.apk", /*version*/0, QR_ECLEVEL_M, /*hint*/ QR_MODE_8, /*casesensitive*/ 1 );
	printf("qrcode: %p\n", qrcode);
	if(qrcode) {
		// const char *BYTES[] = {" ", /*50%oben*/ "\xE2\x96\x80", /*50%unten*/ "\xE2\x96\x84", /*100%*/ "\xE2\x96\x88"};
		const char *BYTES_INVERTED[] = {/*100%*/ "\xE2\x96\x88", /*50%unten*/ "\xE2\x96\x84", /*50%oben*/ "\xE2\x96\x80", " "};
		printf("version: %d, width: %d\n\n",qrcode->version, qrcode->width);
		for(int x=0; x < qrcode->width+2; x++) printf(BYTES_INVERTED[1]);
		printf("\n");
		for(int y=0; y < qrcode->width; y++) {
			printf(BYTES_INVERTED[0]);
			for(int x=0; x < qrcode->width; x++) {
				int val=qrcode->data[y*qrcode->width + x] & 1;
				if((y+1) < qrcode->width) {
					val|=(qrcode->data[(y+1)*qrcode->width + x] & 1) << 1; // nächste zeile 
				}
					// 1=black/0=white
				printf(BYTES_INVERTED[val]);
			}
			y++;
			printf(BYTES_INVERTED[0]);
			printf("\n");
		}
		for(int x=0; x < qrcode->width+2; x++) printf(BYTES_INVERTED[2]);
		printf("\n");
		QRcode_free(qrcode);
		printf("\n");
	} else {
		printf("error: %m\n"); // %m = strerror(errno) ohne argument
		exit(1);
	}

	return;
}

static shared_ptr<PixelTransferBuffer> addressToPTB(const NetAddress& addr) {
    std::string str = std::string("HTTP://") + addr.ipString() + ":" + format("%d", addr.port());
    debugAssert(str.size() <= 28);
    QRcode* qrcode = encode(str.c_str(), (int)str.size());

    const int N = qrcode->width;
    shared_ptr<PixelTransferBuffer> buffer = CPUPixelTransferBuffer::create(N, N, ImageFormat::L8());
    
    unorm8* dst = reinterpret_cast<unorm8*>(buffer->mapWrite());
    const unsigned char* src = qrcode->data;

    const unorm8 BLACK = unorm8::fromBits(0x00);
    const unorm8 WHITE = unorm8::fromBits(0xFF);

    for (int i = 0; i < N * N; ++i) {
        // The bytes are in the opposite convention
        dst[i] = (src[i] & 1) ? BLACK : WHITE;
    }
    
    dst = NULL;
    buffer->unmap();
    QRcode_free(qrcode);

    return buffer;
}

void QRCodeDialog::genCode()
{
    QString uri = getURI();

    if (uri != "")
    {
        ui->lblQRCode->setText("");

        QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
        if (!code)
        {
            ui->lblQRCode->setText(tr("Error encoding URI into QR Code."));
            return;
        }
        myImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
        myImage.fill(0xffffff);
        unsigned char *p = code->data;
        for (int y = 0; y < code->width; y++)
        {
            for (int x = 0; x < code->width; x++)
            {
                myImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
                p++;
            }
        }
        QRcode_free(code);
        ui->lblQRCode->setPixmap(QPixmap::fromImage(myImage).scaled(300, 300));
    }
    else
        ui->lblQRCode->setText(tr("Resulting URI too long, try to reduce the text for label / message."));
}

void test_encode(void)
{
	QRinput *stream;
	char num[9] = "01234567";
	unsigned char *frame;
	int err = 0;
	int x, y, w;
	int mask;
	QRcode *qrcode;

	testStart("Test encode (1-M)");
	stream = QRinput_new();
	QRinput_append(stream, QR_MODE_NUM, 8, (unsigned char *)num);
	for(mask=0; mask<8; mask++) {
		QRinput_setVersion(stream, 1);
		QRinput_setErrorCorrectionLevel(stream, QR_ECLEVEL_M);
		qrcode = QRcode_encodeMask(stream, mask);
		w = qrcode->width;
		frame = qrcode->data;
		for(y=0; y<w; y++) {
			for(x=0; x<w; x++) {
				if(((m1pat[mask][y] >> (20-x)) & 1) != (frame[y*w+x]&1)) {
					printf("Diff in mask=%d (%d,%d)\n", mask, x, y);
					err++;
				}
			}
		}
		QRcode_free(qrcode);
	}
	QRinput_free(stream);
	testEnd(err);
}

void test_format(void)
{
	unsigned char *frame, *masked;
	int version, mask, width, dmask;
	QRecLevel level, dlevel;
	QRcode *code;
	int ret;

	testStart("Checking format info.");
	for(version=1; version<=QRSPEC_VERSION_MAX; version++) {
		frame = QRspec_newFrame(version);
		width = QRspec_getWidth(version);
		for(level=0; level<4; level++) {
			for(mask=0; mask<8; mask++) {
				masked = Mask_makeMask(width, frame, mask, level);
				code = QRcode_new(version, width, masked);
				ret = QRcode_decodeFormat(code, &dlevel, &dmask);
				assert_zero(ret, "Something wrong in format info.\n");
				assert_equal(dlevel, level, "Decoded level is wrong: %d, expected %d", dlevel, level);
				assert_equal(dmask, mask, "Decoded mask is wrong: %d, expected %d", dlevel, level);
				QRcode_free(code);
			}
		}
		free(frame);
	}
	testFinish();
}

void test_newframe(void)
{
	unsigned char buf[QRSPEC_WIDTH_MAX * QRSPEC_WIDTH_MAX];
	int i, width;
	size_t len;
	FILE *fp;
	unsigned char *frame;
	QRcode *qrcode;
	unsigned int version;

	testStart("Checking newly created frame.");
	fp = fopen("frame", "rb");
	if(fp == NULL) {
		perror("Failed to open \"frame\":");
		abort();
	}
	for(i=1; i<=QRSPEC_VERSION_MAX; i++) {
		frame = QRspec_newFrame(i);
		width = QRspec_getWidth(i);
		len = fread(buf, 1, width * width, fp);
		if((int)len != width * width) {
			perror("Failed to read the pattern file:");
			abort();
		}
		assert_zero(memcmp(frame, buf, len), "frame pattern mismatch (version %d)\n", i);
		qrcode = QRcode_new(i, width, frame);
		version = QRcode_decodeVersion(qrcode);
		assert_equal(version, i, "Decoded version number is wrong: %d, expected %d.\n", version, i);
		QRcode_free(qrcode);
	}

	testFinish();
	fclose(fp);
}

void test_oddBitCalcMQR(void)
{
	/* test issue #25 (odd bits calculation bug) */
	/* test pattern contributed by vlad417 */
	TestString tests[] = {
		{"46194", 1, QR_ECLEVEL_L, QR_MODE_8, 1},
		{"WBA5Y47YPQQ", 3, QR_ECLEVEL_L, QR_MODE_8, 1}
	};
	QRcode *qrcode;
	QRdata *qrdata;
	int i;

	testStart("Odd bits calculation bug checking (MQR).");

	for(i=0; i<_countof(tests); i++) {
		qrcode = QRcode_encodeStringMQR(tests[i].str,
										tests[i].version,
										tests[i].level,
										tests[i].hint,
										tests[i].casesensitive);
		assert_nonnull(qrcode, "Failed to encode: %s\n", tests[i].str);
		if(qrcode == NULL) continue;
		qrdata = QRcode_decodeMQR(qrcode);
		assert_nonnull(qrdata, "Failed to decode.\n");
		assert_zero(strcmp((char *)qrdata->data, tests[i].str), "Decoded data (%s) mismatched (%s)\n", (char *)qrdata->data, tests[i].str);
		if(qrdata != NULL) QRdata_free(qrdata);
		QRcode_free(qrcode);
	}

	testFinish();
}

QRWidget::~QRWidget()
{
    if(qr != NULL)
    {
        QRcode_free(qr);
    }
}

void test_encode3(void)
{
	QRcode *code1, *code2;
	QRinput *input;

	testStart("Compare encodeString and encodeInput");
	code1 = QRcode_encodeString("0123456", 0, QR_ECLEVEL_L, QR_MODE_8, 0);
	input = QRinput_new2(0, QR_ECLEVEL_L);
	QRinput_append(input, QR_MODE_NUM, 7, (unsigned char *)"0123456");
	code2 = QRcode_encodeInput(input);
	testEnd(memcmp(code1->data, code2->data, code1->width * code1->width));

	QRcode_free(code1);
	QRcode_free(code2);
	QRinput_free(input);
}