@akamfoad/qr
Version:
Fully typed QRCode encoding implementation in JavaScript with no dependencies!
1,013 lines (1,001 loc) • 28.3 kB
JavaScript
"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
// src/index.ts
var src_exports = {};
__export(src_exports, {
ErrorCorrectLevel: () => ErrorCorrectLevel,
QRCode: () => QRCode,
qrcode: () => qrcode
});
module.exports = __toCommonJS(src_exports);
// src/lib/mode.ts
var mode_default = {
MODE_NUMBER: 1 << 0,
MODE_ALPHA_NUM: 1 << 1,
MODE_8BIT_BYTE: 1 << 2,
MODE_KANJI: 1 << 3
};
// src/lib/8BitByte.ts
var QR8bitByte = class {
mode;
data;
constructor(data) {
this.mode = mode_default.MODE_8BIT_BYTE;
this.data = data;
}
getLength() {
return this.data.length;
}
// FIXME?
write(buffer) {
for (let i = 0; i < this.data.length; i++) {
buffer.put(this.data.charCodeAt(i), 8);
}
}
};
// src/lib/ErrorCorrectLevel.ts
var ErrorCorrectLevel = {
/**
* Allows recovery of up to 7% data loss
*/
L: 1,
/**
* Allows recovery of up to 15% data loss
*/
M: 0,
/**
* Allows recovery of up to 25% data loss
*/
Q: 3,
/**
* Allows recovery of up to 30% data loss
*/
H: 2
};
// src/lib/RSBlock.ts
var QRRSBlock = class _QRRSBlock {
totalCount;
dataCount;
constructor(totalCount, dataCount) {
this.totalCount = totalCount;
this.dataCount = dataCount;
}
static RS_BLOCK_TABLE = [
// L
// M
// Q
// H
// 1
[1, 26, 19],
[1, 26, 16],
[1, 26, 13],
[1, 26, 9],
// 2
[1, 44, 34],
[1, 44, 28],
[1, 44, 22],
[1, 44, 16],
// 3
[1, 70, 55],
[1, 70, 44],
[2, 35, 17],
[2, 35, 13],
// 4
[1, 100, 80],
[2, 50, 32],
[2, 50, 24],
[4, 25, 9],
// 5
[1, 134, 108],
[2, 67, 43],
[2, 33, 15, 2, 34, 16],
[2, 33, 11, 2, 34, 12],
// 6
[2, 86, 68],
[4, 43, 27],
[4, 43, 19],
[4, 43, 15],
// 7
[2, 98, 78],
[4, 49, 31],
[2, 32, 14, 4, 33, 15],
[4, 39, 13, 1, 40, 14],
// 8
[2, 121, 97],
[2, 60, 38, 2, 61, 39],
[4, 40, 18, 2, 41, 19],
[4, 40, 14, 2, 41, 15],
// 9
[2, 146, 116],
[3, 58, 36, 2, 59, 37],
[4, 36, 16, 4, 37, 17],
[4, 36, 12, 4, 37, 13],
// 10
[2, 86, 68, 2, 87, 69],
[4, 69, 43, 1, 70, 44],
[6, 43, 19, 2, 44, 20],
[6, 43, 15, 2, 44, 16],
// 11
[4, 101, 81],
[1, 80, 50, 4, 81, 51],
[4, 50, 22, 4, 51, 23],
[3, 36, 12, 8, 37, 13],
// 12
[2, 116, 92, 2, 117, 93],
[6, 58, 36, 2, 59, 37],
[4, 46, 20, 6, 47, 21],
[7, 42, 14, 4, 43, 15],
// 13
[4, 133, 107],
[8, 59, 37, 1, 60, 38],
[8, 44, 20, 4, 45, 21],
[12, 33, 11, 4, 34, 12],
// 14
[3, 145, 115, 1, 146, 116],
[4, 64, 40, 5, 65, 41],
[11, 36, 16, 5, 37, 17],
[11, 36, 12, 5, 37, 13],
// 15
[5, 109, 87, 1, 110, 88],
[5, 65, 41, 5, 66, 42],
[5, 54, 24, 7, 55, 25],
[11, 36, 12],
// 16
[5, 122, 98, 1, 123, 99],
[7, 73, 45, 3, 74, 46],
[15, 43, 19, 2, 44, 20],
[3, 45, 15, 13, 46, 16],
// 17
[1, 135, 107, 5, 136, 108],
[10, 74, 46, 1, 75, 47],
[1, 50, 22, 15, 51, 23],
[2, 42, 14, 17, 43, 15],
// 18
[5, 150, 120, 1, 151, 121],
[9, 69, 43, 4, 70, 44],
[17, 50, 22, 1, 51, 23],
[2, 42, 14, 19, 43, 15],
// 19
[3, 141, 113, 4, 142, 114],
[3, 70, 44, 11, 71, 45],
[17, 47, 21, 4, 48, 22],
[9, 39, 13, 16, 40, 14],
// 20
[3, 135, 107, 5, 136, 108],
[3, 67, 41, 13, 68, 42],
[15, 54, 24, 5, 55, 25],
[15, 43, 15, 10, 44, 16],
// 21
[4, 144, 116, 4, 145, 117],
[17, 68, 42],
[17, 50, 22, 6, 51, 23],
[19, 46, 16, 6, 47, 17],
// 22
[2, 139, 111, 7, 140, 112],
[17, 74, 46],
[7, 54, 24, 16, 55, 25],
[34, 37, 13],
// 23
[4, 151, 121, 5, 152, 122],
[4, 75, 47, 14, 76, 48],
[11, 54, 24, 14, 55, 25],
[16, 45, 15, 14, 46, 16],
// 24
[6, 147, 117, 4, 148, 118],
[6, 73, 45, 14, 74, 46],
[11, 54, 24, 16, 55, 25],
[30, 46, 16, 2, 47, 17],
// 25
[8, 132, 106, 4, 133, 107],
[8, 75, 47, 13, 76, 48],
[7, 54, 24, 22, 55, 25],
[22, 45, 15, 13, 46, 16],
// 26
[10, 142, 114, 2, 143, 115],
[19, 74, 46, 4, 75, 47],
[28, 50, 22, 6, 51, 23],
[33, 46, 16, 4, 47, 17],
// 27
[8, 152, 122, 4, 153, 123],
[22, 73, 45, 3, 74, 46],
[8, 53, 23, 26, 54, 24],
[12, 45, 15, 28, 46, 16],
// 28
[3, 147, 117, 10, 148, 118],
[3, 73, 45, 23, 74, 46],
[4, 54, 24, 31, 55, 25],
[11, 45, 15, 31, 46, 16],
// 29
[7, 146, 116, 7, 147, 117],
[21, 73, 45, 7, 74, 46],
[1, 53, 23, 37, 54, 24],
[19, 45, 15, 26, 46, 16],
// 30
[5, 145, 115, 10, 146, 116],
[19, 75, 47, 10, 76, 48],
[15, 54, 24, 25, 55, 25],
[23, 45, 15, 25, 46, 16],
// 31
[13, 145, 115, 3, 146, 116],
[2, 74, 46, 29, 75, 47],
[42, 54, 24, 1, 55, 25],
[23, 45, 15, 28, 46, 16],
// 32
[17, 145, 115],
[10, 74, 46, 23, 75, 47],
[10, 54, 24, 35, 55, 25],
[19, 45, 15, 35, 46, 16],
// 33
[17, 145, 115, 1, 146, 116],
[14, 74, 46, 21, 75, 47],
[29, 54, 24, 19, 55, 25],
[11, 45, 15, 46, 46, 16],
// 34
[13, 145, 115, 6, 146, 116],
[14, 74, 46, 23, 75, 47],
[44, 54, 24, 7, 55, 25],
[59, 46, 16, 1, 47, 17],
// 35
[12, 151, 121, 7, 152, 122],
[12, 75, 47, 26, 76, 48],
[39, 54, 24, 14, 55, 25],
[22, 45, 15, 41, 46, 16],
// 36
[6, 151, 121, 14, 152, 122],
[6, 75, 47, 34, 76, 48],
[46, 54, 24, 10, 55, 25],
[2, 45, 15, 64, 46, 16],
// 37
[17, 152, 122, 4, 153, 123],
[29, 74, 46, 14, 75, 47],
[49, 54, 24, 10, 55, 25],
[24, 45, 15, 46, 46, 16],
// 38
[4, 152, 122, 18, 153, 123],
[13, 74, 46, 32, 75, 47],
[48, 54, 24, 14, 55, 25],
[42, 45, 15, 32, 46, 16],
// 39
[20, 147, 117, 4, 148, 118],
[40, 75, 47, 7, 76, 48],
[43, 54, 24, 22, 55, 25],
[10, 45, 15, 67, 46, 16],
// 40
[19, 148, 118, 6, 149, 119],
[18, 75, 47, 31, 76, 48],
[34, 54, 24, 34, 55, 25],
[20, 45, 15, 61, 46, 16]
];
static getRSBlocks(typeNumber, errorCorrectLevel) {
const rsBlock = _QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
if (rsBlock == void 0) {
throw new Error(
"bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel
);
}
const length = rsBlock.length / 3;
const list = [];
for (let i = 0; i < length; i++) {
const count = rsBlock[i * 3 + 0];
const totalCount = rsBlock[i * 3 + 1];
const dataCount = rsBlock[i * 3 + 2];
for (let j = 0; j < count; j++) {
list.push(new _QRRSBlock(totalCount, dataCount));
}
}
return list;
}
static getRsBlockTable(typeNumber, errorCorrectLevel) {
switch (errorCorrectLevel) {
case ErrorCorrectLevel.L:
return _QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
case ErrorCorrectLevel.M:
return _QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
case ErrorCorrectLevel.Q:
return _QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
case ErrorCorrectLevel.H:
return _QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
default:
return void 0;
}
}
};
// src/lib/BitBuffer.ts
var QRBitBuffer = class {
buffer;
length;
constructor() {
this.buffer = [];
this.length = 0;
}
get(index) {
const bufIndex = Math.floor(index / 8);
return (this.buffer[bufIndex] >>> 7 - index % 8 & 1) == 1;
}
put(num, length) {
for (let i = 0; i < length; i++) {
this.putBit((num >>> length - i - 1 & 1) == 1);
}
}
getLengthInBits() {
return this.length;
}
putBit(bit) {
const bufIndex = Math.floor(this.length / 8);
if (this.buffer.length <= bufIndex) {
this.buffer.push(0);
}
if (bit) {
this.buffer[bufIndex] |= 128 >>> this.length % 8;
}
this.length++;
}
};
// src/lib/math.ts
var QRMath = {
glog: function(n) {
if (n < 1) {
throw new Error("glog(" + n + ")");
}
return QRMath.LOG_TABLE[n];
},
gexp: function(n) {
while (n < 0) {
n += 255;
}
while (n >= 256) {
n -= 255;
}
return QRMath.EXP_TABLE[n];
},
EXP_TABLE: new Array(256),
LOG_TABLE: new Array(256)
};
for (let i = 0; i < 8; i++) {
QRMath.EXP_TABLE[i] = 1 << i;
}
for (let i = 8; i < 256; i++) {
QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4] ^ QRMath.EXP_TABLE[i - 5] ^ QRMath.EXP_TABLE[i - 6] ^ QRMath.EXP_TABLE[i - 8];
}
for (let i = 0; i < 255; i++) {
QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i;
}
var math_default = QRMath;
// src/lib/Polynomial.ts
var QRPolynomial = class _QRPolynomial {
num;
constructor(num, shift) {
if (num.length == void 0) {
throw new Error(num.length + "/" + shift);
}
let offset = 0;
while (offset < num.length && num[offset] == 0) {
offset++;
}
this.num = new Array(num.length - offset + shift);
for (let 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) {
const num = new Array(this.getLength() + e.getLength() - 1);
for (let i = 0; i < this.getLength(); i++) {
for (let j = 0; j < e.getLength(); j++) {
num[i + j] ^= math_default.gexp(math_default.glog(this.get(i)) + math_default.glog(e.get(j)));
}
}
return new _QRPolynomial(num, 0);
}
mod(e) {
if (this.getLength() - e.getLength() < 0) {
return this;
}
const ratio = math_default.glog(this.get(0)) - math_default.glog(e.get(0));
const num = new Array(this.getLength());
for (let i = 0; i < this.getLength(); i++) {
num[i] = this.get(i);
}
for (let i = 0; i < e.getLength(); i++) {
num[i] ^= math_default.gexp(math_default.glog(e.get(i)) + ratio);
}
return new _QRPolynomial(num, 0).mod(e);
}
};
// src/lib/util.ts
var QRMaskPattern = {
PATTERN000: 0,
PATTERN001: 1,
PATTERN010: 2,
PATTERN011: 3,
PATTERN100: 4,
PATTERN101: 5,
PATTERN110: 6,
PATTERN111: 7
};
var QRUtil = {
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: function(data) {
let d = data << 10;
while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) {
d ^= QRUtil.G15 << QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15);
}
return (data << 10 | d) ^ QRUtil.G15_MASK;
},
getBCHTypeNumber: function(data) {
let d = data << 12;
while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) {
d ^= QRUtil.G18 << QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18);
}
return data << 12 | d;
},
getBCHDigit: function(data) {
let digit = 0;
while (data != 0) {
digit++;
data >>>= 1;
}
return digit;
},
getPatternPosition: function(typeNumber) {
return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
},
getMask: function(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: function(errorCorrectLength) {
let a = new QRPolynomial([1], 0);
for (let i = 0; i < errorCorrectLength; i++) {
a = a.multiply(new QRPolynomial([1, math_default.gexp(i)], 0));
}
return a;
},
getLengthInBits: function(mode, type) {
if (1 <= type && type < 10) {
switch (mode) {
case mode_default.MODE_NUMBER:
return 10;
case mode_default.MODE_ALPHA_NUM:
return 9;
case mode_default.MODE_8BIT_BYTE:
return 8;
case mode_default.MODE_KANJI:
return 8;
default:
throw new Error("mode:" + mode);
}
} else if (type < 27) {
switch (mode) {
case mode_default.MODE_NUMBER:
return 12;
case mode_default.MODE_ALPHA_NUM:
return 11;
case mode_default.MODE_8BIT_BYTE:
return 16;
case mode_default.MODE_KANJI:
return 10;
default:
throw new Error("mode:" + mode);
}
} else if (type < 41) {
switch (mode) {
case mode_default.MODE_NUMBER:
return 14;
case mode_default.MODE_ALPHA_NUM:
return 13;
case mode_default.MODE_8BIT_BYTE:
return 16;
case mode_default.MODE_KANJI:
return 12;
default:
throw new Error("mode:" + mode);
}
} else {
throw new Error("type:" + type);
}
},
getLostPoint: function(qrCode) {
const moduleCount = qrCode.getModuleCount();
let lostPoint = 0;
for (let row = 0; row < moduleCount; row++) {
for (let col = 0; col < moduleCount; col++) {
let sameCount = 0;
const dark = qrCode.isDark(row, col);
for (let r = -1; r <= 1; r++) {
if (row + r < 0 || moduleCount <= row + r) {
continue;
}
for (let 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 (let row = 0; row < moduleCount - 1; row++) {
for (let col = 0; col < moduleCount - 1; col++) {
let 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 (let row = 0; row < moduleCount; row++) {
for (let 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 (let col = 0; col < moduleCount; col++) {
for (let 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;
}
}
}
let darkCount = 0;
for (let col = 0; col < moduleCount; col++) {
for (let row = 0; row < moduleCount; row++) {
if (qrCode.isDark(row, col)) {
darkCount++;
}
}
}
const ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
lostPoint += ratio * 10;
return lostPoint;
}
};
var util_default = QRUtil;
// src/lib/QRCode.ts
var QRCode = class _QRCode {
typeNumber;
errorCorrectLevel;
modules;
moduleCount;
dataCache;
dataList;
constructor(typeNumber, errorCorrectLevel) {
this.typeNumber = typeNumber;
this.errorCorrectLevel = errorCorrectLevel;
this.modules = null;
this.moduleCount = 0;
this.dataCache = null;
this.dataList = [];
}
// TODO data may be anything, but we start with string
addData(data) {
const newData = new QR8bitByte(data);
this.dataList.push(newData);
this.dataCache = null;
}
isDark(row, col) {
if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) {
throw new Error(row + "," + col);
}
if (this.modules === null) {
throw new Error("this.modules is null");
}
return this.modules[row][col];
}
getModuleCount() {
return this.moduleCount;
}
make() {
if (this.typeNumber < 1) {
let typeNumber = 1;
for (typeNumber = 1; typeNumber < 40; typeNumber++) {
const rsBlocks = QRRSBlock.getRSBlocks(
typeNumber,
this.errorCorrectLevel
);
const buffer = new QRBitBuffer();
let totalDataCount = 0;
for (let i = 0; i < rsBlocks.length; i++) {
totalDataCount += rsBlocks[i].dataCount;
}
for (let i = 0; i < this.dataList.length; i++) {
const data = this.dataList[i];
buffer.put(data.mode, 4);
buffer.put(
data.getLength(),
util_default.getLengthInBits(data.mode, typeNumber)
);
data.write(buffer);
}
if (buffer.getLengthInBits() <= totalDataCount * 8)
break;
}
this.typeNumber = typeNumber;
}
this.makeImpl(false, this.getBestMaskPattern());
}
makeImpl(test, maskPattern) {
this.moduleCount = this.typeNumber * 4 + 17;
this.modules = new Array(this.moduleCount);
for (let row = 0; row < this.moduleCount; row++) {
this.modules[row] = new Array(this.moduleCount);
for (let 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 == null) {
this.dataCache = _QRCode.createData(
this.typeNumber,
this.errorCorrectLevel,
this.dataList
);
}
this.mapData(this.dataCache, maskPattern);
}
setupPositionProbePattern(row, col) {
for (let r = -1; r <= 7; r++) {
if (row + r <= -1 || this.moduleCount <= row + r)
continue;
for (let 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) {
if (this.modules === null) {
throw new Error("this.modules is null");
}
this.modules[row + r][col + c] = true;
} else {
if (this.modules === null) {
throw new Error("this.modules is null");
}
this.modules[row + r][col + c] = false;
}
}
}
}
getBestMaskPattern() {
let minLostPoint = 0;
let pattern = 0;
for (let i = 0; i < 8; i++) {
this.makeImpl(true, i);
const lostPoint = util_default.getLostPoint(this);
if (i == 0 || minLostPoint > lostPoint) {
minLostPoint = lostPoint;
pattern = i;
}
}
return pattern;
}
setupTimingPattern() {
if (this.modules === null) {
throw new Error("this.modules is null");
}
for (let r = 8; r < this.moduleCount - 8; r++) {
if (this.modules[r][6] != null) {
continue;
}
this.modules[r][6] = r % 2 == 0;
}
for (let c = 8; c < this.moduleCount - 8; c++) {
if (this.modules[6][c] != null) {
continue;
}
this.modules[6][c] = c % 2 == 0;
}
}
setupPositionAdjustPattern() {
if (this.modules === null) {
throw new Error("this.modules is null");
}
const pos = util_default.getPatternPosition(this.typeNumber);
for (let i = 0; i < pos.length; i++) {
for (let j = 0; j < pos.length; j++) {
const row = pos[i];
const col = pos[j];
if (this.modules[row][col] != null) {
continue;
}
for (let r = -2; r <= 2; r++) {
for (let 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) {
if (this.modules === null) {
throw new Error("this.modules is null");
}
const bits = util_default.getBCHTypeNumber(this.typeNumber);
for (let i = 0; i < 18; i++) {
const mod = !test && (bits >> i & 1) == 1;
this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod;
}
for (let i = 0; i < 18; i++) {
const mod = !test && (bits >> i & 1) == 1;
this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
}
}
setupTypeInfo(test, maskPattern) {
if (this.modules === null) {
throw new Error("this.modules is null");
}
const data = this.errorCorrectLevel << 3 | maskPattern;
const bits = util_default.getBCHTypeInfo(data);
for (let i = 0; i < 15; i++) {
const 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 (let i = 0; i < 15; i++) {
const 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) {
if (this.modules === null) {
throw new Error("this.modules is null");
}
let inc = -1;
let row = this.moduleCount - 1;
let bitIndex = 7;
let byteIndex = 0;
for (let col = this.moduleCount - 1; col > 0; col -= 2) {
if (col == 6)
col--;
while (true) {
for (let c = 0; c < 2; c++) {
if (this.modules[row][col - c] == null) {
let dark = false;
if (byteIndex < data.length) {
dark = (data[byteIndex] >>> bitIndex & 1) == 1;
}
const mask = util_default.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;
}
}
}
}
static PAD0 = 236;
static PAD1 = 17;
static createData(typeNumber, errorCorrectLevel, dataList) {
const rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
const buffer = new QRBitBuffer();
for (let i = 0; i < dataList.length; i++) {
const data = dataList[i];
buffer.put(data.mode, 4);
buffer.put(data.getLength(), util_default.getLengthInBits(data.mode, typeNumber));
data.write(buffer);
}
let totalDataCount = 0;
for (let 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(_QRCode.PAD0, 8);
if (buffer.getLengthInBits() >= totalDataCount * 8) {
break;
}
buffer.put(_QRCode.PAD1, 8);
}
return _QRCode.createBytes(buffer, rsBlocks);
}
static createBytes(buffer, rsBlocks) {
let offset = 0;
let maxDcCount = 0;
let maxEcCount = 0;
const dcdata = new Array(rsBlocks.length);
const ecdata = new Array(rsBlocks.length);
for (let r = 0; r < rsBlocks.length; r++) {
const dcCount = rsBlocks[r].dataCount;
const ecCount = rsBlocks[r].totalCount - dcCount;
maxDcCount = Math.max(maxDcCount, dcCount);
maxEcCount = Math.max(maxEcCount, ecCount);
dcdata[r] = new Array(dcCount);
for (let i = 0; i < dcdata[r].length; i++) {
dcdata[r][i] = 255 & buffer.buffer[i + offset];
}
offset += dcCount;
const rsPoly = util_default.getErrorCorrectPolynomial(ecCount);
const rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);
const modPoly = rawPoly.mod(rsPoly);
ecdata[r] = new Array(rsPoly.getLength() - 1);
for (let i = 0; i < ecdata[r].length; i++) {
const modIndex = i + modPoly.getLength() - ecdata[r].length;
ecdata[r][i] = modIndex >= 0 ? modPoly.get(modIndex) : 0;
}
}
let totalCodeCount = 0;
for (let i = 0; i < rsBlocks.length; i++) {
totalCodeCount += rsBlocks[i].totalCount;
}
const data = new Array(totalCodeCount);
let index = 0;
for (let i = 0; i < maxDcCount; i++) {
for (let r = 0; r < rsBlocks.length; r++) {
if (i < dcdata[r].length) {
data[index++] = dcdata[r][i];
}
}
}
for (let i = 0; i < maxEcCount; i++) {
for (let r = 0; r < rsBlocks.length; r++) {
if (i < ecdata[r].length) {
data[index++] = ecdata[r][i];
}
}
}
return data;
}
};
// src/index.ts
var qrcode = (data, opt) => {
opt = opt || {};
const qr = new QRCode(
opt.typeNumber || -1,
opt.errorCorrectLevel || ErrorCorrectLevel.H
);
qr.addData(data);
qr.make();
return qr;
};
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
ErrorCorrectLevel,
QRCode,
qrcode
});