@trasherdk/svelte-qrcode
Version:
QR Code generator component for Svelte
1,125 lines (1,124 loc) • 39.2 kB
JavaScript
/**
* @fileoverview
* - translated to TypeScript
* - replaced prototypes with class
* - code still has no dependencies.
*
* @version 1.0.0 (2023-03-20)
* @author Bonosoft, Bo Norgaard
*/
const QRCodeLimitLength = [
[17, 14, 11, 7],
[32, 26, 20, 14],
[53, 42, 32, 24],
[78, 62, 46, 34],
[106, 84, 60, 44],
[134, 106, 74, 58],
[154, 122, 86, 64],
[192, 152, 108, 84],
[230, 180, 130, 98],
[271, 213, 151, 119],
[321, 251, 177, 137],
[367, 287, 203, 155],
[425, 331, 241, 177],
[458, 362, 258, 194],
[520, 412, 292, 220],
[586, 450, 322, 250],
[644, 504, 364, 280],
[718, 560, 394, 310],
[792, 624, 442, 338],
[858, 666, 482, 382],
[929, 711, 509, 403],
[1003, 779, 565, 439],
[1091, 857, 611, 461],
[1171, 911, 661, 511],
[1273, 997, 715, 535],
[1367, 1059, 751, 593],
[1465, 1125, 805, 625],
[1528, 1190, 868, 658],
[1628, 1264, 908, 698],
[1732, 1370, 982, 742],
[1840, 1452, 1030, 790],
[1952, 1538, 1112, 842],
[2068, 1628, 1168, 898],
[2188, 1722, 1228, 958],
[2303, 1809, 1283, 983],
[2431, 1911, 1351, 1051],
[2563, 1989, 1423, 1093],
[2699, 2099, 1499, 1139],
[2809, 2213, 1579, 1219],
[2953, 2331, 1663, 1273]
];
var QRMode;
(function (QRMode) {
QRMode[QRMode["MODE_NUMBER"] = 1] = "MODE_NUMBER";
QRMode[QRMode["MODE_ALPHA_NUM"] = 2] = "MODE_ALPHA_NUM";
QRMode[QRMode["MODE_8BIT_BYTE"] = 4] = "MODE_8BIT_BYTE";
QRMode[QRMode["MODE_KANJI"] = 8] = "MODE_KANJI";
})(QRMode || (QRMode = {}));
;
var QRErrorCorrectLevel;
(function (QRErrorCorrectLevel) {
QRErrorCorrectLevel[QRErrorCorrectLevel["L"] = 1] = "L";
QRErrorCorrectLevel[QRErrorCorrectLevel["M"] = 0] = "M";
QRErrorCorrectLevel[QRErrorCorrectLevel["Q"] = 3] = "Q";
QRErrorCorrectLevel[QRErrorCorrectLevel["H"] = 2] = "H";
})(QRErrorCorrectLevel || (QRErrorCorrectLevel = {}));
;
var QRMaskPattern;
(function (QRMaskPattern) {
QRMaskPattern[QRMaskPattern["PATTERN000"] = 0] = "PATTERN000";
QRMaskPattern[QRMaskPattern["PATTERN001"] = 1] = "PATTERN001";
QRMaskPattern[QRMaskPattern["PATTERN010"] = 2] = "PATTERN010";
QRMaskPattern[QRMaskPattern["PATTERN011"] = 3] = "PATTERN011";
QRMaskPattern[QRMaskPattern["PATTERN100"] = 4] = "PATTERN100";
QRMaskPattern[QRMaskPattern["PATTERN101"] = 5] = "PATTERN101";
QRMaskPattern[QRMaskPattern["PATTERN110"] = 6] = "PATTERN110";
QRMaskPattern[QRMaskPattern["PATTERN111"] = 7] = "PATTERN111";
})(QRMaskPattern || (QRMaskPattern = {}));
;
class QRBitBuffer {
buffer;
length;
constructor() {
this.buffer = [];
this.length = 0;
}
get(index) {
var bufIndex = Math.floor(index / 8);
return ((this.buffer[bufIndex] >>> (7 - (index % 8))) & 1) == 1;
}
put(num, length) {
for (var i = 0; i < length; i++) {
this.putBit(((num >>> (length - i - 1)) & 1) == 1);
}
}
getLengthInBits() {
return this.length;
}
putBit(bit) {
var bufIndex = Math.floor(this.length / 8);
if (this.buffer.length <= bufIndex) {
this.buffer.push(0);
}
if (bit) {
this.buffer[bufIndex] |= 0x80 >>> this.length % 8;
}
this.length++;
}
}
class QRRSBlock {
totalCount;
dataCount;
constructor(totalCount, dataCount) {
this.totalCount = totalCount;
this.dataCount = dataCount;
}
RS_BLOCK_TABLE = [
[1, 26, 19],
[1, 26, 16],
[1, 26, 13],
[1, 26, 9],
[1, 44, 34],
[1, 44, 28],
[1, 44, 22],
[1, 44, 16],
[1, 70, 55],
[1, 70, 44],
[2, 35, 17],
[2, 35, 13],
[1, 100, 80],
[2, 50, 32],
[2, 50, 24],
[4, 25, 9],
[1, 134, 108],
[2, 67, 43],
[2, 33, 15, 2, 34, 16],
[2, 33, 11, 2, 34, 12],
[2, 86, 68],
[4, 43, 27],
[4, 43, 19],
[4, 43, 15],
[2, 98, 78],
[4, 49, 31],
[2, 32, 14, 4, 33, 15],
[4, 39, 13, 1, 40, 14],
[2, 121, 97],
[2, 60, 38, 2, 61, 39],
[4, 40, 18, 2, 41, 19],
[4, 40, 14, 2, 41, 15],
[2, 146, 116],
[3, 58, 36, 2, 59, 37],
[4, 36, 16, 4, 37, 17],
[4, 36, 12, 4, 37, 13],
[2, 86, 68, 2, 87, 69],
[4, 69, 43, 1, 70, 44],
[6, 43, 19, 2, 44, 20],
[6, 43, 15, 2, 44, 16],
[4, 101, 81],
[1, 80, 50, 4, 81, 51],
[4, 50, 22, 4, 51, 23],
[3, 36, 12, 8, 37, 13],
[2, 116, 92, 2, 117, 93],
[6, 58, 36, 2, 59, 37],
[4, 46, 20, 6, 47, 21],
[7, 42, 14, 4, 43, 15],
[4, 133, 107],
[8, 59, 37, 1, 60, 38],
[8, 44, 20, 4, 45, 21],
[12, 33, 11, 4, 34, 12],
[3, 145, 115, 1, 146, 116],
[4, 64, 40, 5, 65, 41],
[11, 36, 16, 5, 37, 17],
[11, 36, 12, 5, 37, 13],
[5, 109, 87, 1, 110, 88],
[5, 65, 41, 5, 66, 42],
[5, 54, 24, 7, 55, 25],
[11, 36, 12],
[5, 122, 98, 1, 123, 99],
[7, 73, 45, 3, 74, 46],
[15, 43, 19, 2, 44, 20],
[3, 45, 15, 13, 46, 16],
[1, 135, 107, 5, 136, 108],
[10, 74, 46, 1, 75, 47],
[1, 50, 22, 15, 51, 23],
[2, 42, 14, 17, 43, 15],
[5, 150, 120, 1, 151, 121],
[9, 69, 43, 4, 70, 44],
[17, 50, 22, 1, 51, 23],
[2, 42, 14, 19, 43, 15],
[3, 141, 113, 4, 142, 114],
[3, 70, 44, 11, 71, 45],
[17, 47, 21, 4, 48, 22],
[9, 39, 13, 16, 40, 14],
[3, 135, 107, 5, 136, 108],
[3, 67, 41, 13, 68, 42],
[15, 54, 24, 5, 55, 25],
[15, 43, 15, 10, 44, 16],
[4, 144, 116, 4, 145, 117],
[17, 68, 42],
[17, 50, 22, 6, 51, 23],
[19, 46, 16, 6, 47, 17],
[2, 139, 111, 7, 140, 112],
[17, 74, 46],
[7, 54, 24, 16, 55, 25],
[34, 37, 13],
[4, 151, 121, 5, 152, 122],
[4, 75, 47, 14, 76, 48],
[11, 54, 24, 14, 55, 25],
[16, 45, 15, 14, 46, 16],
[6, 147, 117, 4, 148, 118],
[6, 73, 45, 14, 74, 46],
[11, 54, 24, 16, 55, 25],
[30, 46, 16, 2, 47, 17],
[8, 132, 106, 4, 133, 107],
[8, 75, 47, 13, 76, 48],
[7, 54, 24, 22, 55, 25],
[22, 45, 15, 13, 46, 16],
[10, 142, 114, 2, 143, 115],
[19, 74, 46, 4, 75, 47],
[28, 50, 22, 6, 51, 23],
[33, 46, 16, 4, 47, 17],
[8, 152, 122, 4, 153, 123],
[22, 73, 45, 3, 74, 46],
[8, 53, 23, 26, 54, 24],
[12, 45, 15, 28, 46, 16],
[3, 147, 117, 10, 148, 118],
[3, 73, 45, 23, 74, 46],
[4, 54, 24, 31, 55, 25],
[11, 45, 15, 31, 46, 16],
[7, 146, 116, 7, 147, 117],
[21, 73, 45, 7, 74, 46],
[1, 53, 23, 37, 54, 24],
[19, 45, 15, 26, 46, 16],
[5, 145, 115, 10, 146, 116],
[19, 75, 47, 10, 76, 48],
[15, 54, 24, 25, 55, 25],
[23, 45, 15, 25, 46, 16],
[13, 145, 115, 3, 146, 116],
[2, 74, 46, 29, 75, 47],
[42, 54, 24, 1, 55, 25],
[23, 45, 15, 28, 46, 16],
[17, 145, 115],
[10, 74, 46, 23, 75, 47],
[10, 54, 24, 35, 55, 25],
[19, 45, 15, 35, 46, 16],
[17, 145, 115, 1, 146, 116],
[14, 74, 46, 21, 75, 47],
[29, 54, 24, 19, 55, 25],
[11, 45, 15, 46, 46, 16],
[13, 145, 115, 6, 146, 116],
[14, 74, 46, 23, 75, 47],
[44, 54, 24, 7, 55, 25],
[59, 46, 16, 1, 47, 17],
[12, 151, 121, 7, 152, 122],
[12, 75, 47, 26, 76, 48],
[39, 54, 24, 14, 55, 25],
[22, 45, 15, 41, 46, 16],
[6, 151, 121, 14, 152, 122],
[6, 75, 47, 34, 76, 48],
[46, 54, 24, 10, 55, 25],
[2, 45, 15, 64, 46, 16],
[17, 152, 122, 4, 153, 123],
[29, 74, 46, 14, 75, 47],
[49, 54, 24, 10, 55, 25],
[24, 45, 15, 46, 46, 16],
[4, 152, 122, 18, 153, 123],
[13, 74, 46, 32, 75, 47],
[48, 54, 24, 14, 55, 25],
[42, 45, 15, 32, 46, 16],
[20, 147, 117, 4, 148, 118],
[40, 75, 47, 7, 76, 48],
[43, 54, 24, 22, 55, 25],
[10, 45, 15, 67, 46, 16],
[19, 148, 118, 6, 149, 119],
[18, 75, 47, 31, 76, 48],
[34, 54, 24, 34, 55, 25],
[20, 45, 15, 61, 46, 16]
];
getRSBlocks(typeNumber, errorCorrectLevel) {
var rsBlock = this.getRsBlockTable(typeNumber, errorCorrectLevel);
if (rsBlock == undefined) {
throw new Error('bad rs block @ typeNumber:' + typeNumber + '/errorCorrectLevel:' + errorCorrectLevel);
}
var length = rsBlock.length / 3;
var list = [];
for (var i = 0; i < length; i++) {
var count = rsBlock[i * 3 + 0];
var totalCount = rsBlock[i * 3 + 1];
var dataCount = rsBlock[i * 3 + 2];
for (var j = 0; j < count; j++) {
list.push(new QRRSBlock(totalCount, dataCount));
}
}
return list;
}
;
getRsBlockTable(typeNumber, errorCorrectLevel) {
switch (errorCorrectLevel) {
case QRErrorCorrectLevel.L:
return this.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
case QRErrorCorrectLevel.M:
return this.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
case QRErrorCorrectLevel.Q:
return this.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
case QRErrorCorrectLevel.H:
return this.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
default:
return undefined;
}
}
;
}
class QR8bitByte {
mode;
data;
parsedData;
constructor(data) {
this.mode = QRMode.MODE_8BIT_BYTE;
this.data = data;
this.parsedData = [];
// Added to support UTF-8 Characters
for (var i = 0, l = this.data.length; i < l; i++) {
var byteArray = [];
var code = this.data.charCodeAt(i);
if (code > 0x10000) {
byteArray[0] = 0xf0 | ((code & 0x1c0000) >>> 18);
byteArray[1] = 0x80 | ((code & 0x3f000) >>> 12);
byteArray[2] = 0x80 | ((code & 0xfc0) >>> 6);
byteArray[3] = 0x80 | (code & 0x3f);
}
else if (code > 0x800) {
byteArray[0] = 0xe0 | ((code & 0xf000) >>> 12);
byteArray[1] = 0x80 | ((code & 0xfc0) >>> 6);
byteArray[2] = 0x80 | (code & 0x3f);
}
else if (code > 0x80) {
byteArray[0] = 0xc0 | ((code & 0x7c0) >>> 6);
byteArray[1] = 0x80 | (code & 0x3f);
}
else {
byteArray[0] = code;
}
this.parsedData.push(...byteArray);
}
this.parsedData = Array.prototype.concat.apply([], this.parsedData);
if (this.parsedData.length != this.data.length) {
this.parsedData.unshift(191);
this.parsedData.unshift(187);
this.parsedData.unshift(239);
}
}
getLength() {
return this.parsedData.length;
}
write(buffer) {
for (var i = 0, l = this.parsedData.length; i < l; i++) {
buffer.put(this.parsedData[i], 8);
}
}
}
class QRMath {
EXP_TABLE = new Array(256);
LOG_TABLE = new Array(256);
constructor() {
for (var i = 0; i < 8; i++) {
this.EXP_TABLE[i] = 1 << i;
}
for (var i = 8; i < 256; i++) {
this.EXP_TABLE[i] =
this.EXP_TABLE[i - 4] ^
this.EXP_TABLE[i - 5] ^
this.EXP_TABLE[i - 6] ^
this.EXP_TABLE[i - 8];
}
for (var i = 0; i < 255; i++) {
this.LOG_TABLE[this.EXP_TABLE[i]] = i;
}
}
glog(n) {
if (n < 1) {
throw new Error('glog(' + n + ')');
}
return this.LOG_TABLE[n];
}
gexp(n) {
while (n < 0) {
n += 255;
}
while (n >= 256) {
n -= 255;
}
return this.EXP_TABLE[n];
}
}
class QRPolynomial {
num;
qrMath = new QRMath();
constructor(num, shift) {
if (num.length == undefined) {
throw new Error(num.length + '/' + shift);
}
var offset = 0;
while (offset < num.length && num[offset] == 0) {
offset++;
}
this.num = new Array(num.length - offset + shift);
for (var i = 0; i < num.length - offset; i++) {
this.num[i] = num[i + offset];
}
}
get(index) {
return this.num[index];
}
getLength() {
return this.num.length;
}
multiply(e) {
var num = new Array(this.getLength() + e.getLength() - 1);
for (var i = 0; i < this.getLength(); i++) {
for (var j = 0; j < e.getLength(); j++) {
num[i + j] ^= this.qrMath.gexp(this.qrMath.glog(this.get(i)) + this.qrMath.glog(e.get(j)));
}
}
return new QRPolynomial(num, 0);
}
mod(e) {
if (this.getLength() - e.getLength() < 0) {
return this;
}
var ratio = this.qrMath.glog(this.get(0)) - this.qrMath.glog(e.get(0));
var num = new Array(this.getLength());
for (var i = 0; i < this.getLength(); i++) {
num[i] = this.get(i);
}
for (var i = 0; i < e.getLength(); i++) {
num[i] ^= this.qrMath.gexp(this.qrMath.glog(e.get(i)) + ratio);
}
return new QRPolynomial(num, 0).mod(e);
}
}
class QRCodeModel {
typeNumber;
errorCorrectLevel;
modules;
moduleCount;
dataCache;
dataList;
qrUtil = new QRUtil;
constructor(typeNumber, errorCorrectLevel) {
this.typeNumber = typeNumber;
this.errorCorrectLevel = errorCorrectLevel;
this.modules = [];
this.moduleCount = 0;
this.dataCache = [];
this.dataList = [];
}
addData(data) {
var newData = new QR8bitByte(data);
this.dataList.push(newData);
this.dataCache = [];
}
isDark(row, col) {
if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) {
throw new Error(row + ',' + col);
}
return this.modules[row][col];
}
getModuleCount() {
return this.moduleCount;
}
makeImpl(test, maskPattern) {
this.moduleCount = this.typeNumber * 4 + 17;
this.modules = new Array(this.moduleCount);
for (var row = 0; row < this.moduleCount; row++) {
this.modules[row] = new Array(this.moduleCount);
for (var col = 0; col < this.moduleCount; col++) {
this.modules[row][col] = null;
}
}
this.setupPositionProbePattern(0, 0);
this.setupPositionProbePattern(this.moduleCount - 7, 0);
this.setupPositionProbePattern(0, this.moduleCount - 7);
this.setupPositionAdjustPattern();
this.setupTimingPattern();
this.setupTypeInfo(test, maskPattern);
if (this.typeNumber >= 7) {
this.setupTypeNumber(test);
}
if (this.dataCache.length == 0) {
this.dataCache = this.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);
}
this.mapData(this.dataCache, maskPattern);
}
getBestMaskPattern() {
var minLostPoint = 0;
var pattern = 0;
for (var i = 0; i < 8; i++) {
this.makeImpl(true, i);
var lostPoint = this.qrUtil.getLostPoint(this);
if (i == 0 || minLostPoint > lostPoint) {
minLostPoint = lostPoint;
pattern = i;
}
}
return pattern;
}
make() {
this.makeImpl(false, this.getBestMaskPattern());
}
setupPositionProbePattern(row, col) {
for (var r = -1; r <= 7; r++) {
if (row + r <= -1 || this.moduleCount <= row + r)
continue;
for (var c = -1; c <= 7; c++) {
if (col + c <= -1 || this.moduleCount <= col + c)
continue;
if ((0 <= r && r <= 6 && (c == 0 || c == 6)) ||
(0 <= c && c <= 6 && (r == 0 || r == 6)) ||
(2 <= r && r <= 4 && 2 <= c && c <= 4)) {
this.modules[row + r][col + c] = true;
}
else {
this.modules[row + r][col + c] = false;
}
}
}
}
/*
public createMovieClip(target_mc, instance_name, depth) {
var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth);
var cs = 1;
this.make();
for (var row = 0; row < this.modules.length; row++) {
var y = row * cs;
for (var col = 0; col < this.modules[row].length; col++) {
var x = col * cs;
var dark = this.modules[row][col];
if (dark) {
qr_mc.beginFill(0, 100);
qr_mc.moveTo(x, y);
qr_mc.lineTo(x + cs, y);
qr_mc.lineTo(x + cs, y + cs);
qr_mc.lineTo(x, y + cs);
qr_mc.endFill();
}
}
}
return qr_mc;
}
*/
setupTimingPattern() {
for (var r = 8; r < this.moduleCount - 8; r++) {
if (this.modules[r][6] != null) {
continue;
}
this.modules[r][6] = r % 2 == 0;
}
for (var c = 8; c < this.moduleCount - 8; c++) {
if (this.modules[6][c] != null) {
continue;
}
this.modules[6][c] = c % 2 == 0;
}
}
setupPositionAdjustPattern() {
var pos = this.qrUtil.getPatternPosition(this.typeNumber);
for (var i = 0; i < pos.length; i++) {
for (var j = 0; j < pos.length; j++) {
var row = pos[i];
var col = pos[j];
if (this.modules[row][col] != null) {
continue;
}
for (var r = -2; r <= 2; r++) {
for (var c = -2; c <= 2; c++) {
if (r == -2 || r == 2 || c == -2 || c == 2 || (r == 0 && c == 0)) {
this.modules[row + r][col + c] = true;
}
else {
this.modules[row + r][col + c] = false;
}
}
}
}
}
}
setupTypeNumber(test) {
var bits = this.qrUtil.getBCHTypeNumber(this.typeNumber);
for (var i = 0; i < 18; i++) {
var mod = !test && ((bits >> i) & 1) == 1;
this.modules[Math.floor(i / 3)][(i % 3) + this.moduleCount - 8 - 3] = mod;
}
for (var i = 0; i < 18; i++) {
var mod = !test && ((bits >> i) & 1) == 1;
this.modules[(i % 3) + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
}
}
setupTypeInfo(test, maskPattern) {
var data = (this.errorCorrectLevel << 3) | maskPattern;
var bits = this.qrUtil.getBCHTypeInfo(data);
for (var i = 0; i < 15; i++) {
var mod = !test && ((bits >> i) & 1) == 1;
if (i < 6) {
this.modules[i][8] = mod;
}
else if (i < 8) {
this.modules[i + 1][8] = mod;
}
else {
this.modules[this.moduleCount - 15 + i][8] = mod;
}
}
for (var i = 0; i < 15; i++) {
var mod = !test && ((bits >> i) & 1) == 1;
if (i < 8) {
this.modules[8][this.moduleCount - i - 1] = mod;
}
else if (i < 9) {
this.modules[8][15 - i - 1 + 1] = mod;
}
else {
this.modules[8][15 - i - 1] = mod;
}
}
this.modules[this.moduleCount - 8][8] = !test;
}
mapData(data, maskPattern) {
var inc = -1;
var row = this.moduleCount - 1;
var bitIndex = 7;
var byteIndex = 0;
for (var col = this.moduleCount - 1; col > 0; col -= 2) {
if (col == 6)
col--;
while (true) {
for (var c = 0; c < 2; c++) {
if (this.modules[row][col - c] == null) {
var dark = false;
if (byteIndex < data.length) {
dark = ((data[byteIndex] >>> bitIndex) & 1) == 1;
}
var mask = this.qrUtil.getMask(maskPattern, row, col - c);
if (mask) {
dark = !dark;
}
this.modules[row][col - c] = dark;
bitIndex--;
if (bitIndex == -1) {
byteIndex++;
bitIndex = 7;
}
}
}
row += inc;
if (row < 0 || this.moduleCount <= row) {
row -= inc;
inc = -inc;
break;
}
}
}
}
PAD0 = 0xec;
PAD1 = 0x11;
createData(typeNumber, errorCorrectLevel, dataList) {
var qrRSBlock = new QRRSBlock(0, 0);
var rsBlocks = qrRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
var buffer = new QRBitBuffer();
for (var i = 0; i < dataList.length; i++) {
var data = dataList[i];
buffer.put(data.mode, 4);
buffer.put(data.getLength(), this.qrUtil.getLengthInBits(data.mode, typeNumber));
data.write(buffer);
}
var totalDataCount = 0;
for (var i = 0; i < rsBlocks.length; i++) {
totalDataCount += rsBlocks[i].dataCount;
}
if (buffer.getLengthInBits() > totalDataCount * 8) {
throw new Error('code length overflow. (' + buffer.getLengthInBits() + '>' + totalDataCount * 8 + ')');
}
if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
buffer.put(0, 4);
}
while (buffer.getLengthInBits() % 8 != 0) {
buffer.putBit(false);
}
while (true) {
if (buffer.getLengthInBits() >= totalDataCount * 8) {
break;
}
buffer.put(this.PAD0, 8);
if (buffer.getLengthInBits() >= totalDataCount * 8) {
break;
}
buffer.put(this.PAD1, 8);
}
return this.createBytes(buffer, rsBlocks);
}
createBytes(buffer, rsBlocks) {
var offset = 0;
var maxDcCount = 0;
var maxEcCount = 0;
var dcdata = new Array(rsBlocks.length);
var ecdata = new Array(rsBlocks.length);
for (var r = 0; r < rsBlocks.length; r++) {
var dcCount = rsBlocks[r].dataCount;
var ecCount = rsBlocks[r].totalCount - dcCount;
maxDcCount = Math.max(maxDcCount, dcCount);
maxEcCount = Math.max(maxEcCount, ecCount);
dcdata[r] = new Array(dcCount);
for (var i = 0; i < dcdata[r].length; i++) {
dcdata[r][i] = 0xff & buffer.buffer[i + offset];
}
offset += dcCount;
var rsPoly = this.qrUtil.getErrorCorrectPolynomial(ecCount);
var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);
var modPoly = rawPoly.mod(rsPoly);
ecdata[r] = new Array(rsPoly.getLength() - 1);
for (var i = 0; i < ecdata[r].length; i++) {
var modIndex = i + modPoly.getLength() - ecdata[r].length;
ecdata[r][i] = modIndex >= 0 ? modPoly.get(modIndex) : 0;
}
}
var totalCodeCount = 0;
for (var i = 0; i < rsBlocks.length; i++) {
totalCodeCount += rsBlocks[i].totalCount;
}
var data = new Array(totalCodeCount);
var index = 0;
for (var i = 0; i < maxDcCount; i++) {
for (var r = 0; r < rsBlocks.length; r++) {
if (i < dcdata[r].length) {
data[index++] = dcdata[r][i];
}
}
}
for (var i = 0; i < maxEcCount; i++) {
for (var r = 0; r < rsBlocks.length; r++) {
if (i < ecdata[r].length) {
data[index++] = ecdata[r][i];
}
}
}
return data;
}
}
class QRUtil {
data = {
PATTERN_POSITION_TABLE: [
[],
[6, 18],
[6, 22],
[6, 26],
[6, 30],
[6, 34],
[6, 22, 38],
[6, 24, 42],
[6, 26, 46],
[6, 28, 50],
[6, 30, 54],
[6, 32, 58],
[6, 34, 62],
[6, 26, 46, 66],
[6, 26, 48, 70],
[6, 26, 50, 74],
[6, 30, 54, 78],
[6, 30, 56, 82],
[6, 30, 58, 86],
[6, 34, 62, 90],
[6, 28, 50, 72, 94],
[6, 26, 50, 74, 98],
[6, 30, 54, 78, 102],
[6, 28, 54, 80, 106],
[6, 32, 58, 84, 110],
[6, 30, 58, 86, 114],
[6, 34, 62, 90, 118],
[6, 26, 50, 74, 98, 122],
[6, 30, 54, 78, 102, 126],
[6, 26, 52, 78, 104, 130],
[6, 30, 56, 82, 108, 134],
[6, 34, 60, 86, 112, 138],
[6, 30, 58, 86, 114, 142],
[6, 34, 62, 90, 118, 146],
[6, 30, 54, 78, 102, 126, 150],
[6, 24, 50, 76, 102, 128, 154],
[6, 28, 54, 80, 106, 132, 158],
[6, 32, 58, 84, 110, 136, 162],
[6, 26, 54, 82, 110, 138, 166],
[6, 30, 58, 86, 114, 142, 170]
],
G15: (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
G18: (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
G15_MASK: (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1)
};
getBCHTypeInfo(data) {
var d = data << 10;
while (this.getBCHDigit(d) - this.getBCHDigit(this.data.G15) >= 0) {
d ^= this.data.G15 << (this.getBCHDigit(d) - this.getBCHDigit(this.data.G15));
}
return ((data << 10) | d) ^ this.data.G15_MASK;
}
getBCHTypeNumber(data) {
var d = data << 12;
while (this.getBCHDigit(d) - this.getBCHDigit(this.data.G18) >= 0) {
d ^= this.data.G18 << (this.getBCHDigit(d) - this.getBCHDigit(this.data.G18));
}
return (data << 12) | d;
}
getBCHDigit(data) {
var digit = 0;
while (data != 0) {
digit++;
data >>>= 1;
}
return digit;
}
getPatternPosition(typeNumber) {
return this.data.PATTERN_POSITION_TABLE[typeNumber - 1];
}
getMask(maskPattern, i, j) {
switch (maskPattern) {
case QRMaskPattern.PATTERN000:
return (i + j) % 2 == 0;
case QRMaskPattern.PATTERN001:
return i % 2 == 0;
case QRMaskPattern.PATTERN010:
return j % 3 == 0;
case QRMaskPattern.PATTERN011:
return (i + j) % 3 == 0;
case QRMaskPattern.PATTERN100:
return (Math.floor(i / 2) + Math.floor(j / 3)) % 2 == 0;
case QRMaskPattern.PATTERN101:
return ((i * j) % 2) + ((i * j) % 3) == 0;
case QRMaskPattern.PATTERN110:
return (((i * j) % 2) + ((i * j) % 3)) % 2 == 0;
case QRMaskPattern.PATTERN111:
return (((i * j) % 3) + ((i + j) % 2)) % 2 == 0;
default:
throw new Error('bad maskPattern:' + maskPattern);
}
}
getErrorCorrectPolynomial(errorCorrectLength) {
var qrMath = new QRMath();
var a = new QRPolynomial([1], 0);
for (var i = 0; i < errorCorrectLength; i++) {
a = a.multiply(new QRPolynomial([1, qrMath.gexp(i)], 0));
}
return a;
}
getLengthInBits(mode, type) {
if (1 <= type && type < 10) {
switch (mode) {
case QRMode.MODE_NUMBER:
return 10;
case QRMode.MODE_ALPHA_NUM:
return 9;
case QRMode.MODE_8BIT_BYTE:
return 8;
case QRMode.MODE_KANJI:
return 8;
default:
throw new Error('mode:' + mode);
}
}
else if (type < 27) {
switch (mode) {
case QRMode.MODE_NUMBER:
return 12;
case QRMode.MODE_ALPHA_NUM:
return 11;
case QRMode.MODE_8BIT_BYTE:
return 16;
case QRMode.MODE_KANJI:
return 10;
default:
throw new Error('mode:' + mode);
}
}
else if (type < 41) {
switch (mode) {
case QRMode.MODE_NUMBER:
return 14;
case QRMode.MODE_ALPHA_NUM:
return 13;
case QRMode.MODE_8BIT_BYTE:
return 16;
case QRMode.MODE_KANJI:
return 12;
default:
throw new Error('mode:' + mode);
}
}
else {
throw new Error('type:' + type);
}
}
getLostPoint(qrCode) {
var moduleCount = qrCode.getModuleCount();
var lostPoint = 0;
for (var row = 0; row < moduleCount; row++) {
for (var col = 0; col < moduleCount; col++) {
var sameCount = 0;
var dark = qrCode.isDark(row, col);
for (var r = -1; r <= 1; r++) {
if (row + r < 0 || moduleCount <= row + r) {
continue;
}
for (var c = -1; c <= 1; c++) {
if (col + c < 0 || moduleCount <= col + c) {
continue;
}
if (r == 0 && c == 0) {
continue;
}
if (dark == qrCode.isDark(row + r, col + c)) {
sameCount++;
}
}
}
if (sameCount > 5) {
lostPoint += 3 + sameCount - 5;
}
}
}
for (var row = 0; row < moduleCount - 1; row++) {
for (var col = 0; col < moduleCount - 1; col++) {
var count = 0;
if (qrCode.isDark(row, col))
count++;
if (qrCode.isDark(row + 1, col))
count++;
if (qrCode.isDark(row, col + 1))
count++;
if (qrCode.isDark(row + 1, col + 1))
count++;
if (count == 0 || count == 4) {
lostPoint += 3;
}
}
}
for (var row = 0; row < moduleCount; row++) {
for (var col = 0; col < moduleCount - 6; col++) {
if (qrCode.isDark(row, col) &&
!qrCode.isDark(row, col + 1) &&
qrCode.isDark(row, col + 2) &&
qrCode.isDark(row, col + 3) &&
qrCode.isDark(row, col + 4) &&
!qrCode.isDark(row, col + 5) &&
qrCode.isDark(row, col + 6)) {
lostPoint += 40;
}
}
}
for (var col = 0; col < moduleCount; col++) {
for (var row = 0; row < moduleCount - 6; row++) {
if (qrCode.isDark(row, col) &&
!qrCode.isDark(row + 1, col) &&
qrCode.isDark(row + 2, col) &&
qrCode.isDark(row + 3, col) &&
qrCode.isDark(row + 4, col) &&
!qrCode.isDark(row + 5, col) &&
qrCode.isDark(row + 6, col)) {
lostPoint += 40;
}
}
}
var darkCount = 0;
for (var col = 0; col < moduleCount; col++) {
for (var row = 0; row < moduleCount; row++) {
if (qrCode.isDark(row, col)) {
darkCount++;
}
}
}
var ratio = Math.abs((100 * darkCount) / moduleCount / moduleCount - 50) / 5;
lostPoint += ratio * 10;
return lostPoint;
}
}
;
class QRCode {
options;
qrCodeModel;
constructor(userOptions) {
this.options = { content: '', padding: 8, width: 256, height: 256, typeNumber: 4, color: '#000000',
background: '#ffffff', ecl: 'M', container: 'svg', join: true };
if (typeof userOptions === 'string')
userOptions = { content: userOptions };
if (userOptions) {
for (var i in userOptions) {
// @ts-ignore
this.options[i] = userOptions[i];
}
}
if (this.options.content.length === 0 || this.options.content.length > 7000) {
throw new Error("Expected 'content' to be non-empty and less than 6K !");
}
if (this.options.padding < 1)
this.options.padding = 1;
if (this.options.width < 1)
this.options.width = 256;
if (this.options.height < 1)
this.options.height = 256;
var content = this.options.content;
var type = this._getTypeNumber(content, this.options.ecl);
var ecl = this._getErrorCorrectLevel(this.options.ecl);
this.qrCodeModel = new QRCodeModel(type, ecl);
this.qrCodeModel.addData(content);
this.qrCodeModel.make();
}
_getErrorCorrectLevel(ecl) {
switch (ecl) {
case 'L':
return QRErrorCorrectLevel.L;
case 'M':
return QRErrorCorrectLevel.M;
case 'Q':
return QRErrorCorrectLevel.Q;
case 'H':
return QRErrorCorrectLevel.H;
default:
throw new Error('Unknwon error correction level: ' + ecl);
}
}
_getTypeNumber(content, ecl) {
var length = this._getUTF8Length(content);
var type = 1;
var limit = 0;
for (var i = 0, len = QRCodeLimitLength.length; i <= len; i++) {
var table = QRCodeLimitLength[i];
if (!table) {
throw new Error('Content too long: expected ' + limit + ' but got ' + length);
}
switch (ecl) {
case 'L':
limit = table[0];
break;
case 'M':
limit = table[1];
break;
case 'Q':
limit = table[2];
break;
case 'H':
limit = table[3];
break;
default:
throw new Error('Unknwon error correction level: ' + ecl);
}
if (length <= limit) {
break;
}
type++;
}
if (type > QRCodeLimitLength.length) {
throw new Error('Content too long');
}
return type;
}
_getUTF8Length(content) {
var result = encodeURI(content).toString().replace(/\%[0-9a-fA-F]{2}/g, 'a');
return result.length + (result.length != content.length ? 3 : 0);
}
svg() {
var EOL = '';
var width = this.options.width;
var height = this.options.height;
var modules = this.qrCodeModel.modules;
var length = modules.length;
var xsize = width / (length + 2 * this.options.padding);
var ysize = height / (length + 2 * this.options.padding);
var join = this.options.join;
var bgrect = '<rect x="0" y="0" width="' + width + '" height="' + height + '" style="fill:' + this.options.background + ';shape-rendering:crispEdges;"/>' + EOL;
var modrect = '';
var pathdata = '';
for (var y = 0; y < length; y++) {
for (var x = 0; x < length; x++) {
var module = modules[x][y];
if (module) {
var px = x * xsize + this.options.padding * xsize;
var py = y * ysize + this.options.padding * ysize;
if (join) {
//Module as a part of svg path data, thanks to @danioso
var w = xsize + px;
var h = ysize + py;
px = Number.isInteger(px) ? Number(px) : px.toFixed(2);
py = Number.isInteger(py) ? Number(py) : py.toFixed(2);
w = Number.isInteger(w) ? Number(w) : w.toFixed(2);
h = Number.isInteger(h) ? Number(h) : h.toFixed(2);
pathdata += 'M' + px + ',' + py + ' V' + h + ' H' + w + ' V' + py + ' H' + px + ' Z ';
}
else {
//Module as rectangle element
modrect += '<rect x="' + px.toString() + '" y="' + py.toString() + '" width="' + xsize + '" height="' + ysize + '" style="fill:' + this.options.color + ';shape-rendering:crispEdges;"/>' + EOL;
}
}
}
}
if (join) {
modrect = '<path x="0" y="0" style="fill:' + this.options.color + ';shape-rendering:crispEdges;" d="' + pathdata + '" />';
}
var svg = '';
switch (this.options.container) {
case 'svg':
svg += '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="' + width + '" height="' + height + '">' + EOL;
svg += bgrect + modrect;
svg += '</svg>';
break;
//Viewbox for responsive use in a browser, thanks to @danioso
case 'svg-viewbox':
svg += '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 ' + width + ' ' + height + '">' + EOL;
svg += bgrect + modrect;
svg += '</svg>';
break;
//Without a container
default:
svg += (bgrect + modrect);
break;
}
return svg;
}
}
export { QRCode };