qrcode.js

const QRMode = {
  MODE_NUMBER: 1 << 0,
  MODE_ALPHA_NUM: 1 << 1,
  MODE_8BIT_BYTE: 1 << 2,
  MODE_KANJI: 1 << 3
};

const QRErrorCorrectLevel = {
  L: 1,
  M: 0,
  Q: 3,
  H: 2
};

const QRMaskPattern = {
  PATTERN000: 0,
  PATTERN001: 1,
  PATTERN010: 2,
  PATTERN011: 3,
  PATTERN100: 4,
  PATTERN101: 5,
  PATTERN110: 6,
  PATTERN111: 7
};

const 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) {
    var 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) {
    var 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) {
    var 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) {
    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: function (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: function (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;
  }
};

const 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)
};

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]
];

for (var i = 0; i < 8; i++) {
  QRMath.EXP_TABLE[i] = 1 << i;
}
for (var 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 (var i = 0; i < 255; i++) {
  QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i;
}

function _getTypeNumber(sText, nCorrectLevel) {
  var nType = 1;
  var length = _getUTF8Length(sText);

  for (var i = 0, len = QRCodeLimitLength.length; i <= len; i++) {
    var nLimit = 0;

    switch (nCorrectLevel) {
      case QRErrorCorrectLevel.L:
        nLimit = QRCodeLimitLength[i][0];
        break;
      case QRErrorCorrectLevel.M:
        nLimit = QRCodeLimitLength[i][1];
        break;
      case QRErrorCorrectLevel.Q:
        nLimit = QRCodeLimitLength[i][2];
        break;
      case QRErrorCorrectLevel.H:
        nLimit = QRCodeLimitLength[i][3];
        break;
    }

    if (length <= nLimit) {
      break;
    } else {
      nType++;
    }
  }

  if (nType > QRCodeLimitLength.length) {
    throw new Error("Too long data");
  }

  return nType;
}

function _getUTF8Length(sText) {
  var replacedText = encodeURI(sText).toString().replace(/\%[0-9a-fA-F]{2}/g, 'a');
  return replacedText.length + (replacedText.length != sText ? 3 : 0);
}

export default class QRCode {

  constructor(canvasContext, vOption) {
    this._htOption = {
      width: 256,
      height: 256,
      typeNumber: 4,
      colorDark: "#000000",
      colorLight: "#ffffff",
      correctLevel: QRErrorCorrectLevel.H
    };

    if (typeof vOption === 'string') {
      vOption = {
        text: vOption
      };
    }

    // Overwrites options
    if (vOption) {
      for (var i in vOption) {
        this._htOption[i] = vOption[i];
      }
    }

    this._canvasContext = canvasContext;
    this._oQRCode = null;

    if (this._htOption.text) {
      this.makeCode(this._htOption.text);
    }
  }

  makeCode(sText) {
    this._oQRCode = new QRCodeModel(_getTypeNumber(sText, this._htOption.correctLevel), this._htOption.correctLevel);
    this._oQRCode.addData(sText);
    this._oQRCode.make();

    this.draw(this._oQRCode);
  }

  draw(oQRCode) {

    var _htOption = this._htOption;
    var _canvasContext = this._canvasContext;
    var nCount = oQRCode.getModuleCount();
    var nWidth = _htOption.width / nCount;
    var nHeight = _htOption.height / nCount;

    _canvasContext.clearRect(0, 0, _htOption.width, _htOption.height);

    _canvasContext.setFillStyle(_htOption.colorDark);
    _canvasContext.setStrokeStyle(_htOption.colorDark)

    for (var row = 0; row < nCount; row++) {

      for (var col = 0; col < nCount; col++) {


        if (oQRCode.isDark(row, col)) {
          _canvasContext.fillRect(col * nWidth, row * nHeight, nWidth, nHeight);
        }

      }

    }

    _canvasContext.draw();

  }
}

class QRBitBuffer {

  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 {


  constructor(totalCount, dataCount) {
    this.totalCount = totalCount;
    this.dataCount = dataCount;
  }



}

QRRSBlock.getRsBlockTable = function (typeNumber, errorCorrectLevel) {
  switch (errorCorrectLevel) {
    case QRErrorCorrectLevel.L:
      return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
    case QRErrorCorrectLevel.M:
      return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
    case QRErrorCorrectLevel.Q:
      return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
    case QRErrorCorrectLevel.H:
      return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
    default:
      return undefined;
  }
};

QRRSBlock.getRSBlocks = function (typeNumber, errorCorrectLevel) {
  var rsBlock = QRRSBlock.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;
};

QRRSBlock.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]
];

class QRPolynomial {

  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] ^= QRMath.gexp(QRMath.glog(this.get(i)) + QRMath.glog(e.get(j)));
      }
    }
    return new QRPolynomial(num, 0);
  }

  mod(e) {
    if (this.getLength() - e.getLength() < 0) {
      return this;
    }
    var ratio = QRMath.glog(this.get(0)) - 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] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio);
    }
    return new QRPolynomial(num, 0).mod(e);
  }


}

class QR8bitByte {

  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(buffer) {
    return this.parsedData.length;
  }

  write(buffer) {
    for (var i = 0, l = this.parsedData.length; i < l; i++) {
      buffer.put(this.parsedData[i], 8);
    }
  }

}

class QRCodeModel {

  constructor(typeNumber, errorCorrectLevel) {
    this.typeNumber = typeNumber;
    this.errorCorrectLevel = errorCorrectLevel;
    this.modules = null;
    this.moduleCount = 0;
    this.dataCache = null;
    this.dataList = [];
  }


  addData(data) {
    var 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);
    }
    return this.modules[row][col];
  }

  getModuleCount() {
    return this.moduleCount;
  }

  make() {
    this.makeImpl(false, this.getBestMaskPattern());
  }

  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 == null) {
      this.dataCache = QRCodeModel.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);
    }
    this.mapData(this.dataCache, maskPattern);
  }

  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;
        }
      }
    }
  }

  getBestMaskPattern() {
    var minLostPoint = 0;
    var pattern = 0;
    for (var i = 0; i < 8; i++) {
      this.makeImpl(true, i);
      var lostPoint = QRUtil.getLostPoint(this);
      if (i == 0 || minLostPoint > lostPoint) {
        minLostPoint = lostPoint;
        pattern = i;
      }
    }
    return pattern;
  }

  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 = 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 = 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 = 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 = 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;
        }
      }
    }

  };

}

QRCodeModel.createData = function (typeNumber, errorCorrectLevel, dataList) {
  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(), 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(QRCodeModel.PAD0, 8);
    if (buffer.getLengthInBits() >= totalDataCount * 8) {
      break;
    }
    buffer.put(QRCodeModel.PAD1, 8);
  }
  return QRCodeModel.createBytes(buffer, rsBlocks);
};

QRCodeModel.createBytes = function (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 = 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;
};
QRCodeModel.PAD0 = 0xEC;
QRCodeModel.PAD1 = 0x11;