clean up static files

1 files changed, 0 insertions, 1760 deletions

diff --git a/static/qr.js b/static/qr.js
deleted file mode 100644
index dd8ce879..00000000
--- a/static/qr.js
+++ /dev/null
@@ -1,1760 +0,0 @@
-//---------------------------------------------------------------------
-//
-// QR Code Generator for JavaScript
-//
-// Copyright (c) 2009 Kazuhiko Arase
-//
-// URL: http://www.d-project.com/
-//
-// Licensed under the MIT license:
-//	http://www.opensource.org/licenses/mit-license.php
-//
-// The word 'QR Code' is registered trademark of
-// DENSO WAVE INCORPORATED
-//	http://www.denso-wave.com/qrcode/faqpatent-e.html
-//
-//---------------------------------------------------------------------
-
-//---------------微信小程序基于base64生成二维码插件修改-------------------
-/*
- * @Modified: Pudon
- * @demoURL: https://github.com/Pudon/weapp-qrcode
- * @Date: 2018-09-11 14:00:05
- * @Last Modified by: Pudon
- * @Last Modified time: 2018-09-12 16:33:19
- */
-//---------------------------------------------------------------------
-
-/**
- * qrcode
- * @param typeNumber 1 to 40
- * @param errorCorrectLevel 'L','M','Q','H'
- */
-var qrcode = function (typeNumber, errorCorrectLevel) {
-  var PAD0 = 0xec;
-  var PAD1 = 0x11;
-
-  var _typeNumber = typeNumber;
-  var _errorCorrectLevel = QRErrorCorrectLevel[errorCorrectLevel];
-  var _modules = null;
-  var _moduleCount = 0;
-  var _dataCache = null;
-  var _dataList = new Array();
-
-  var _this = {};
-
-  var makeImpl = function (test, maskPattern) {
-    _moduleCount = _typeNumber * 4 + 17;
-    _modules = (function (moduleCount) {
-      var modules = new Array(moduleCount);
-      for (var row = 0; row < moduleCount; row += 1) {
-        modules[row] = new Array(moduleCount);
-        for (var col = 0; col < moduleCount; col += 1) {
-          modules[row][col] = null;
-        }
-      }
-      return modules;
-    })(_moduleCount);
-
-    setupPositionProbePattern(0, 0);
-    setupPositionProbePattern(_moduleCount - 7, 0);
-    setupPositionProbePattern(0, _moduleCount - 7);
-    setupPositionAdjustPattern();
-    setupTimingPattern();
-    setupTypeInfo(test, maskPattern);
-
-    if (_typeNumber >= 7) {
-      setupTypeNumber(test);
-    }
-
-    if (_dataCache == null) {
-      _dataCache = createData(_typeNumber, _errorCorrectLevel, _dataList);
-    }
-
-    mapData(_dataCache, maskPattern);
-  };
-
-  var setupPositionProbePattern = function (row, col) {
-    for (var r = -1; r <= 7; r += 1) {
-      if (row + r <= -1 || _moduleCount <= row + r) continue;
-
-      for (var c = -1; c <= 7; c += 1) {
-        if (col + c <= -1 || _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)
-        ) {
-          _modules[row + r][col + c] = true;
-        } else {
-          _modules[row + r][col + c] = false;
-        }
-      }
-    }
-  };
-
-  var getBestMaskPattern = function () {
-    var minLostPoint = 0;
-    var pattern = 0;
-
-    for (var i = 0; i < 8; i += 1) {
-      makeImpl(true, i);
-
-      var lostPoint = QRUtil.getLostPoint(_this);
-
-      if (i == 0 || minLostPoint > lostPoint) {
-        minLostPoint = lostPoint;
-        pattern = i;
-      }
-    }
-
-    return pattern;
-  };
-
-  var setupTimingPattern = function () {
-    for (var r = 8; r < _moduleCount - 8; r += 1) {
-      if (_modules[r][6] != null) {
-        continue;
-      }
-      _modules[r][6] = r % 2 == 0;
-    }
-
-    for (var c = 8; c < _moduleCount - 8; c += 1) {
-      if (_modules[6][c] != null) {
-        continue;
-      }
-      _modules[6][c] = c % 2 == 0;
-    }
-  };
-
-  var setupPositionAdjustPattern = function () {
-    var pos = QRUtil.getPatternPosition(_typeNumber);
-
-    for (var i = 0; i < pos.length; i += 1) {
-      for (var j = 0; j < pos.length; j += 1) {
-        var row = pos[i];
-        var col = pos[j];
-
-        if (_modules[row][col] != null) {
-          continue;
-        }
-
-        for (var r = -2; r <= 2; r += 1) {
-          for (var c = -2; c <= 2; c += 1) {
-            if (r == -2 || r == 2 || c == -2 || c == 2 || (r == 0 && c == 0)) {
-              _modules[row + r][col + c] = true;
-            } else {
-              _modules[row + r][col + c] = false;
-            }
-          }
-        }
-      }
-    }
-  };
-
-  var setupTypeNumber = function (test) {
-    var bits = QRUtil.getBCHTypeNumber(_typeNumber);
-
-    for (var i = 0; i < 18; i += 1) {
-      var mod = !test && ((bits >> i) & 1) == 1;
-      _modules[Math.floor(i / 3)][(i % 3) + _moduleCount - 8 - 3] = mod;
-    }
-
-    for (var i = 0; i < 18; i += 1) {
-      var mod = !test && ((bits >> i) & 1) == 1;
-      _modules[(i % 3) + _moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
-    }
-  };
-
-  var setupTypeInfo = function (test, maskPattern) {
-    var data = (_errorCorrectLevel << 3) | maskPattern;
-    var bits = QRUtil.getBCHTypeInfo(data);
-
-    // vertical
-    for (var i = 0; i < 15; i += 1) {
-      var mod = !test && ((bits >> i) & 1) == 1;
-
-      if (i < 6) {
-        _modules[i][8] = mod;
-      } else if (i < 8) {
-        _modules[i + 1][8] = mod;
-      } else {
-        _modules[_moduleCount - 15 + i][8] = mod;
-      }
-    }
-
-    // horizontal
-    for (var i = 0; i < 15; i += 1) {
-      var mod = !test && ((bits >> i) & 1) == 1;
-
-      if (i < 8) {
-        _modules[8][_moduleCount - i - 1] = mod;
-      } else if (i < 9) {
-        _modules[8][15 - i - 1 + 1] = mod;
-      } else {
-        _modules[8][15 - i - 1] = mod;
-      }
-    }
-
-    // fixed module
-    _modules[_moduleCount - 8][8] = !test;
-  };
-
-  var mapData = function (data, maskPattern) {
-    var inc = -1;
-    var row = _moduleCount - 1;
-    var bitIndex = 7;
-    var byteIndex = 0;
-    var maskFunc = QRUtil.getMaskFunction(maskPattern);
-
-    for (var col = _moduleCount - 1; col > 0; col -= 2) {
-      if (col == 6) col -= 1;
-
-      while (true) {
-        for (var c = 0; c < 2; c += 1) {
-          if (_modules[row][col - c] == null) {
-            var dark = false;
-
-            if (byteIndex < data.length) {
-              dark = ((data[byteIndex] >>> bitIndex) & 1) == 1;
-            }
-
-            var mask = maskFunc(row, col - c);
-
-            if (mask) {
-              dark = !dark;
-            }
-
-            _modules[row][col - c] = dark;
-            bitIndex -= 1;
-
-            if (bitIndex == -1) {
-              byteIndex += 1;
-              bitIndex = 7;
-            }
-          }
-        }
-
-        row += inc;
-
-        if (row < 0 || _moduleCount <= row) {
-          row -= inc;
-          inc = -inc;
-          break;
-        }
-      }
-    }
-  };
-
-  var 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 += 1) {
-      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 += 1) {
-        dcdata[r][i] = 0xff & buffer.getBuffer()[i + offset];
-      }
-      offset += dcCount;
-
-      var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
-      var rawPoly = 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 += 1) {
-        var modIndex = i + modPoly.getLength() - ecdata[r].length;
-        ecdata[r][i] = modIndex >= 0 ? modPoly.getAt(modIndex) : 0;
-      }
-    }
-
-    var totalCodeCount = 0;
-    for (var i = 0; i < rsBlocks.length; i += 1) {
-      totalCodeCount += rsBlocks[i].totalCount;
-    }
-
-    var data = new Array(totalCodeCount);
-    var index = 0;
-
-    for (var i = 0; i < maxDcCount; i += 1) {
-      for (var r = 0; r < rsBlocks.length; r += 1) {
-        if (i < dcdata[r].length) {
-          data[index] = dcdata[r][i];
-          index += 1;
-        }
-      }
-    }
-
-    for (var i = 0; i < maxEcCount; i += 1) {
-      for (var r = 0; r < rsBlocks.length; r += 1) {
-        if (i < ecdata[r].length) {
-          data[index] = ecdata[r][i];
-          index += 1;
-        }
-      }
-    }
-
-    return data;
-  };
-
-  var createData = function (typeNumber, errorCorrectLevel, dataList) {
-    var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
-
-    var buffer = qrBitBuffer();
-
-    for (var i = 0; i < dataList.length; i += 1) {
-      var data = dataList[i];
-      buffer.put(data.getMode(), 4);
-      buffer.put(
-        data.getLength(),
-        QRUtil.getLengthInBits(data.getMode(), typeNumber),
-      );
-      data.write(buffer);
-    }
-
-    // calc num max data.
-    var totalDataCount = 0;
-    for (var i = 0; i < rsBlocks.length; i += 1) {
-      totalDataCount += rsBlocks[i].dataCount;
-    }
-
-    if (buffer.getLengthInBits() > totalDataCount * 8) {
-      throw new Error(
-        "code length overflow. (" +
-          buffer.getLengthInBits() +
-          ">" +
-          totalDataCount * 8 +
-          ")",
-      );
-    }
-
-    // end code
-    if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
-      buffer.put(0, 4);
-    }
-
-    // padding
-    while (buffer.getLengthInBits() % 8 != 0) {
-      buffer.putBit(false);
-    }
-
-    // padding
-    while (true) {
-      if (buffer.getLengthInBits() >= totalDataCount * 8) {
-        break;
-      }
-      buffer.put(PAD0, 8);
-
-      if (buffer.getLengthInBits() >= totalDataCount * 8) {
-        break;
-      }
-      buffer.put(PAD1, 8);
-    }
-
-    return createBytes(buffer, rsBlocks);
-  };
-
-  _this.addData = function (data) {
-    var newData = qr8BitByte(data);
-    _dataList.push(newData);
-    _dataCache = null;
-  };
-
-  _this.isDark = function (row, col) {
-    if (row < 0 || _moduleCount <= row || col < 0 || _moduleCount <= col) {
-      throw new Error(row + "," + col);
-    }
-    return _modules[row][col];
-  };
-
-  _this.getModuleCount = function () {
-    return _moduleCount;
-  };
-
-  _this.make = function () {
-    makeImpl(false, getBestMaskPattern());
-  };
-
-  _this.createTableTag = function (cellSize, margin) {
-    cellSize = cellSize || 2;
-    margin = typeof margin == "undefined" ? cellSize * 4 : margin;
-
-    var qrHtml = "";
-
-    qrHtml += '<table style="';
-    qrHtml += " border-width: 0px; border-style: none;";
-    qrHtml += " border-collapse: collapse;";
-    qrHtml += " padding: 0px; margin: " + margin + "px;";
-    qrHtml += '">';
-    qrHtml += "<tbody>";
-
-    for (var r = 0; r < _this.getModuleCount(); r += 1) {
-      qrHtml += "<tr>";
-
-      for (var c = 0; c < _this.getModuleCount(); c += 1) {
-        qrHtml += '<td style="';
-        qrHtml += " border-width: 0px; border-style: none;";
-        qrHtml += " border-collapse: collapse;";
-        qrHtml += " padding: 0px; margin: 0px;";
-        qrHtml += " width: " + cellSize + "px;";
-        qrHtml += " height: " + cellSize + "px;";
-        qrHtml += " background-color: ";
-        qrHtml += _this.isDark(r, c) ? "#000000" : "#ffffff";
-        qrHtml += ";";
-        qrHtml += '"/>';
-      }
-
-      qrHtml += "</tr>";
-    }
-
-    qrHtml += "</tbody>";
-    qrHtml += "</table>";
-
-    return qrHtml;
-  };
-
-  _this.createImgTag = function (cellSize, margin, size) {
-    cellSize = cellSize || 2;
-    margin = typeof margin == "undefined" ? cellSize * 4 : margin;
-
-    var min = margin;
-    var max = _this.getModuleCount() * cellSize + margin;
-
-    return createImgTag(size, size, function (x, y) {
-      if (min <= x && x < max && min <= y && y < max) {
-        var c = Math.floor((x - min) / cellSize);
-        var r = Math.floor((y - min) / cellSize);
-        return _this.isDark(r, c) ? 0 : 1;
-      } else {
-        return 1;
-      }
-    });
-  };
-
-  return _this;
-};
-
-//---------------------------------------------------------------------
-// qrcode.stringToBytes
-//---------------------------------------------------------------------
-
-qrcode.stringToBytes = function (s) {
-  var bytes = new Array();
-  for (var i = 0; i < s.length; i += 1) {
-    var c = s.charCodeAt(i);
-    bytes.push(c & 0xff);
-  }
-  return bytes;
-};
-
-//---------------------------------------------------------------------
-// qrcode.createStringToBytes
-//---------------------------------------------------------------------
-
-/**
- * @param unicodeData base64 string of byte array.
- * [16bit Unicode],[16bit Bytes], ...
- * @param numChars
- */
-qrcode.createStringToBytes = function (unicodeData, numChars) {
-  // create conversion map.
-
-  var unicodeMap = (function () {
-    var bin = base64DecodeInputStream(unicodeData);
-    var read = function () {
-      var b = bin.read();
-      if (b == -1) throw new Error();
-      return b;
-    };
-
-    var count = 0;
-    var unicodeMap = {};
-    while (true) {
-      var b0 = bin.read();
-      if (b0 == -1) break;
-      var b1 = read();
-      var b2 = read();
-      var b3 = read();
-      var k = String.fromCharCode((b0 << 8) | b1);
-      var v = (b2 << 8) | b3;
-      unicodeMap[k] = v;
-      count += 1;
-    }
-    if (count != numChars) {
-      throw new Error(count + " != " + numChars);
-    }
-
-    return unicodeMap;
-  })();
-
-  var unknownChar = "?".charCodeAt(0);
-
-  return function (s) {
-    var bytes = new Array();
-    for (var i = 0; i < s.length; i += 1) {
-      var c = s.charCodeAt(i);
-      if (c < 128) {
-        bytes.push(c);
-      } else {
-        var b = unicodeMap[s.charAt(i)];
-        if (typeof b == "number") {
-          if ((b & 0xff) == b) {
-            // 1byte
-            bytes.push(b);
-          } else {
-            // 2bytes
-            bytes.push(b >>> 8);
-            bytes.push(b & 0xff);
-          }
-        } else {
-          bytes.push(unknownChar);
-        }
-      }
-    }
-    return bytes;
-  };
-};
-
-//---------------------------------------------------------------------
-// QRMode
-//---------------------------------------------------------------------
-
-var QRMode = {
-  MODE_NUMBER: 1 << 0,
-  MODE_ALPHA_NUM: 1 << 1,
-  MODE_8BIT_BYTE: 1 << 2,
-  MODE_KANJI: 1 << 3,
-};
-
-//---------------------------------------------------------------------
-// QRErrorCorrectLevel
-//---------------------------------------------------------------------
-
-var QRErrorCorrectLevel = {
-  L: 1,
-  M: 0,
-  Q: 3,
-  H: 2,
-};
-
-//---------------------------------------------------------------------
-// QRMaskPattern
-//---------------------------------------------------------------------
-
-var QRMaskPattern = {
-  PATTERN000: 0,
-  PATTERN001: 1,
-  PATTERN010: 2,
-  PATTERN011: 3,
-  PATTERN100: 4,
-  PATTERN101: 5,
-  PATTERN110: 6,
-  PATTERN111: 7,
-};
-
-//---------------------------------------------------------------------
-// QRUtil
-//---------------------------------------------------------------------
-
-var QRUtil = (function () {
-  var 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],
-  ];
-  var G15 =
-    (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0);
-  var G18 =
-    (1 << 12) |
-    (1 << 11) |
-    (1 << 10) |
-    (1 << 9) |
-    (1 << 8) |
-    (1 << 5) |
-    (1 << 2) |
-    (1 << 0);
-  var G15_MASK = (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1);
-
-  var _this = {};
-
-  var getBCHDigit = function (data) {
-    var digit = 0;
-    while (data != 0) {
-      digit += 1;
-      data >>>= 1;
-    }
-    return digit;
-  };
-
-  _this.getBCHTypeInfo = function (data) {
-    var d = data << 10;
-    while (getBCHDigit(d) - getBCHDigit(G15) >= 0) {
-      d ^= G15 << (getBCHDigit(d) - getBCHDigit(G15));
-    }
-    return ((data << 10) | d) ^ G15_MASK;
-  };
-
-  _this.getBCHTypeNumber = function (data) {
-    var d = data << 12;
-    while (getBCHDigit(d) - getBCHDigit(G18) >= 0) {
-      d ^= G18 << (getBCHDigit(d) - getBCHDigit(G18));
-    }
-    return (data << 12) | d;
-  };
-
-  _this.getPatternPosition = function (typeNumber) {
-    return PATTERN_POSITION_TABLE[typeNumber - 1];
-  };
-
-  _this.getMaskFunction = function (maskPattern) {
-    switch (maskPattern) {
-      case QRMaskPattern.PATTERN000:
-        return function (i, j) {
-          return (i + j) % 2 == 0;
-        };
-      case QRMaskPattern.PATTERN001:
-        return function (i, j) {
-          return i % 2 == 0;
-        };
-      case QRMaskPattern.PATTERN010:
-        return function (i, j) {
-          return j % 3 == 0;
-        };
-      case QRMaskPattern.PATTERN011:
-        return function (i, j) {
-          return (i + j) % 3 == 0;
-        };
-      case QRMaskPattern.PATTERN100:
-        return function (i, j) {
-          return (Math.floor(i / 2) + Math.floor(j / 3)) % 2 == 0;
-        };
-      case QRMaskPattern.PATTERN101:
-        return function (i, j) {
-          return ((i * j) % 2) + ((i * j) % 3) == 0;
-        };
-      case QRMaskPattern.PATTERN110:
-        return function (i, j) {
-          return (((i * j) % 2) + ((i * j) % 3)) % 2 == 0;
-        };
-      case QRMaskPattern.PATTERN111:
-        return function (i, j) {
-          return (((i * j) % 3) + ((i + j) % 2)) % 2 == 0;
-        };
-
-      default:
-        throw new Error("bad maskPattern:" + maskPattern);
-    }
-  };
-
-  _this.getErrorCorrectPolynomial = function (errorCorrectLength) {
-    var a = qrPolynomial([1], 0);
-    for (var i = 0; i < errorCorrectLength; i += 1) {
-      a = a.multiply(qrPolynomial([1, QRMath.gexp(i)], 0));
-    }
-    return a;
-  };
-
-  _this.getLengthInBits = function (mode, type) {
-    if (1 <= type && type < 10) {
-      // 1 - 9
-
-      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) {
-      // 10 - 26
-
-      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) {
-      // 27 - 40
-
-      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);
-    }
-  };
-
-  _this.getLostPoint = function (qrcode) {
-    var moduleCount = qrcode.getModuleCount();
-
-    var lostPoint = 0;
-
-    // LEVEL1
-
-    for (var row = 0; row < moduleCount; row += 1) {
-      for (var col = 0; col < moduleCount; col += 1) {
-        var sameCount = 0;
-        var dark = qrcode.isDark(row, col);
-
-        for (var r = -1; r <= 1; r += 1) {
-          if (row + r < 0 || moduleCount <= row + r) {
-            continue;
-          }
-
-          for (var c = -1; c <= 1; c += 1) {
-            if (col + c < 0 || moduleCount <= col + c) {
-              continue;
-            }
-
-            if (r == 0 && c == 0) {
-              continue;
-            }
-
-            if (dark == qrcode.isDark(row + r, col + c)) {
-              sameCount += 1;
-            }
-          }
-        }
-
-        if (sameCount > 5) {
-          lostPoint += 3 + sameCount - 5;
-        }
-      }
-    }
-
-    // LEVEL2
-
-    for (var row = 0; row < moduleCount - 1; row += 1) {
-      for (var col = 0; col < moduleCount - 1; col += 1) {
-        var count = 0;
-        if (qrcode.isDark(row, col)) count += 1;
-        if (qrcode.isDark(row + 1, col)) count += 1;
-        if (qrcode.isDark(row, col + 1)) count += 1;
-        if (qrcode.isDark(row + 1, col + 1)) count += 1;
-        if (count == 0 || count == 4) {
-          lostPoint += 3;
-        }
-      }
-    }
-
-    // LEVEL3
-
-    for (var row = 0; row < moduleCount; row += 1) {
-      for (var col = 0; col < moduleCount - 6; col += 1) {
-        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 += 1) {
-      for (var row = 0; row < moduleCount - 6; row += 1) {
-        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;
-        }
-      }
-    }
-
-    // LEVEL4
-
-    var darkCount = 0;
-
-    for (var col = 0; col < moduleCount; col += 1) {
-      for (var row = 0; row < moduleCount; row += 1) {
-        if (qrcode.isDark(row, col)) {
-          darkCount += 1;
-        }
-      }
-    }
-
-    var ratio =
-      Math.abs((100 * darkCount) / moduleCount / moduleCount - 50) / 5;
-    lostPoint += ratio * 10;
-
-    return lostPoint;
-  };
-
-  return _this;
-})();
-
-//---------------------------------------------------------------------
-// QRMath
-//---------------------------------------------------------------------
-
-var QRMath = (function () {
-  var EXP_TABLE = new Array(256);
-  var LOG_TABLE = new Array(256);
-
-  // initialize tables
-  for (var i = 0; i < 8; i += 1) {
-    EXP_TABLE[i] = 1 << i;
-  }
-  for (var i = 8; i < 256; i += 1) {
-    EXP_TABLE[i] =
-      EXP_TABLE[i - 4] ^ EXP_TABLE[i - 5] ^ EXP_TABLE[i - 6] ^ EXP_TABLE[i - 8];
-  }
-  for (var i = 0; i < 255; i += 1) {
-    LOG_TABLE[EXP_TABLE[i]] = i;
-  }
-
-  var _this = {};
-
-  _this.glog = function (n) {
-    if (n < 1) {
-      throw new Error("glog(" + n + ")");
-    }
-
-    return LOG_TABLE[n];
-  };
-
-  _this.gexp = function (n) {
-    while (n < 0) {
-      n += 255;
-    }
-
-    while (n >= 256) {
-      n -= 255;
-    }
-
-    return EXP_TABLE[n];
-  };
-
-  return _this;
-})();
-
-//---------------------------------------------------------------------
-// qrPolynomial
-//---------------------------------------------------------------------
-
-function qrPolynomial(num, shift) {
-  if (typeof num.length == "undefined") {
-    throw new Error(num.length + "/" + shift);
-  }
-
-  var _num = (function () {
-    var offset = 0;
-    while (offset < num.length && num[offset] == 0) {
-      offset += 1;
-    }
-    var _num = new Array(num.length - offset + shift);
-    for (var i = 0; i < num.length - offset; i += 1) {
-      _num[i] = num[i + offset];
-    }
-    return _num;
-  })();
-
-  var _this = {};
-
-  _this.getAt = function (index) {
-    return _num[index];
-  };
-
-  _this.getLength = function () {
-    return _num.length;
-  };
-
-  _this.multiply = function (e) {
-    var num = new Array(_this.getLength() + e.getLength() - 1);
-
-    for (var i = 0; i < _this.getLength(); i += 1) {
-      for (var j = 0; j < e.getLength(); j += 1) {
-        num[i + j] ^= QRMath.gexp(
-          QRMath.glog(_this.getAt(i)) + QRMath.glog(e.getAt(j)),
-        );
-      }
-    }
-
-    return qrPolynomial(num, 0);
-  };
-
-  _this.mod = function (e) {
-    if (_this.getLength() - e.getLength() < 0) {
-      return _this;
-    }
-
-    var ratio = QRMath.glog(_this.getAt(0)) - QRMath.glog(e.getAt(0));
-
-    var num = new Array(_this.getLength());
-    for (var i = 0; i < _this.getLength(); i += 1) {
-      num[i] = _this.getAt(i);
-    }
-
-    for (var i = 0; i < e.getLength(); i += 1) {
-      num[i] ^= QRMath.gexp(QRMath.glog(e.getAt(i)) + ratio);
-    }
-
-    // recursive call
-    return qrPolynomial(num, 0).mod(e);
-  };
-
-  return _this;
-}
-
-//---------------------------------------------------------------------
-// QRRSBlock
-//---------------------------------------------------------------------
-
-var QRRSBlock = (function () {
-  // [1: [L, M, Q, H], ..]
-  var 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],
-  ];
-
-  var qrRSBlock = function (totalCount, dataCount) {
-    var _this = {};
-    _this.totalCount = totalCount;
-    _this.dataCount = dataCount;
-    return _this;
-  };
-
-  var _this = {};
-
-  var getRsBlockTable = function (typeNumber, errorCorrectLevel) {
-    switch (errorCorrectLevel) {
-      case QRErrorCorrectLevel.L:
-        return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
-      case QRErrorCorrectLevel.M:
-        return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
-      case QRErrorCorrectLevel.Q:
-        return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
-      case QRErrorCorrectLevel.H:
-        return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
-      default:
-        return undefined;
-    }
-  };
-
-  _this.getRSBlocks = function (typeNumber, errorCorrectLevel) {
-    var rsBlock = getRsBlockTable(typeNumber, errorCorrectLevel);
-
-    if (typeof rsBlock == "undefined") {
-      throw new Error(
-        "bad rs block @ typeNumber:" +
-          typeNumber +
-          "/errorCorrectLevel:" +
-          errorCorrectLevel,
-      );
-    }
-
-    var length = rsBlock.length / 3;
-
-    var list = new Array();
-
-    for (var i = 0; i < length; i += 1) {
-      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 += 1) {
-        list.push(qrRSBlock(totalCount, dataCount));
-      }
-    }
-
-    return list;
-  };
-
-  return _this;
-})();
-
-//---------------------------------------------------------------------
-// qrBitBuffer
-//---------------------------------------------------------------------
-
-var qrBitBuffer = function () {
-  var _buffer = new Array();
-  var _length = 0;
-
-  var _this = {};
-
-  _this.getBuffer = function () {
-    return _buffer;
-  };
-
-  _this.getAt = function (index) {
-    var bufIndex = Math.floor(index / 8);
-    return ((_buffer[bufIndex] >>> (7 - (index % 8))) & 1) == 1;
-  };
-
-  _this.put = function (num, length) {
-    for (var i = 0; i < length; i += 1) {
-      _this.putBit(((num >>> (length - i - 1)) & 1) == 1);
-    }
-  };
-
-  _this.getLengthInBits = function () {
-    return _length;
-  };
-
-  _this.putBit = function (bit) {
-    var bufIndex = Math.floor(_length / 8);
-    if (_buffer.length <= bufIndex) {
-      _buffer.push(0);
-    }
-
-    if (bit) {
-      _buffer[bufIndex] |= 0x80 >>> _length % 8;
-    }
-
-    _length += 1;
-  };
-
-  return _this;
-};
-
-//---------------------------------------------------------------------
-// qr8BitByte
-//---------------------------------------------------------------------
-
-var qr8BitByte = function (data) {
-  var _mode = QRMode.MODE_8BIT_BYTE;
-  var _data = data;
-  var _parsedData = [];
-
-  var _this = {};
-
-  // Added to support UTF-8 Characters
-  for (var i = 0, l = _data.length; i < l; i++) {
-    var byteArray = [];
-    var code = _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;
-    }
-
-    // Fix Unicode corruption bug
-    _parsedData.push(byteArray);
-  }
-
-  _parsedData = Array.prototype.concat.apply([], _parsedData);
-
-  if (_parsedData.length != _data.length) {
-    _parsedData.unshift(191);
-    _parsedData.unshift(187);
-    _parsedData.unshift(239);
-  }
-
-  var _bytes = _parsedData;
-
-  _this.getMode = function () {
-    return _mode;
-  };
-
-  _this.getLength = function (buffer) {
-    return _bytes.length;
-  };
-
-  _this.write = function (buffer) {
-    for (var i = 0; i < _bytes.length; i += 1) {
-      buffer.put(_bytes[i], 8);
-    }
-  };
-
-  return _this;
-};
-
-//=====================================================================
-// GIF Support etc.
-//
-
-//---------------------------------------------------------------------
-// byteArrayOutputStream
-//---------------------------------------------------------------------
-
-var byteArrayOutputStream = function () {
-  var _bytes = new Array();
-
-  var _this = {};
-
-  _this.writeByte = function (b) {
-    _bytes.push(b & 0xff);
-  };
-
-  _this.writeShort = function (i) {
-    _this.writeByte(i);
-    _this.writeByte(i >>> 8);
-  };
-
-  _this.writeBytes = function (b, off, len) {
-    off = off || 0;
-    len = len || b.length;
-    for (var i = 0; i < len; i += 1) {
-      _this.writeByte(b[i + off]);
-    }
-  };
-
-  _this.writeString = function (s) {
-    for (var i = 0; i < s.length; i += 1) {
-      _this.writeByte(s.charCodeAt(i));
-    }
-  };
-
-  _this.toByteArray = function () {
-    return _bytes;
-  };
-
-  _this.toString = function () {
-    var s = "";
-    s += "[";
-    for (var i = 0; i < _bytes.length; i += 1) {
-      if (i > 0) {
-        s += ",";
-      }
-      s += _bytes[i];
-    }
-    s += "]";
-    return s;
-  };
-
-  return _this;
-};
-
-//---------------------------------------------------------------------
-// base64EncodeOutputStream
-//---------------------------------------------------------------------
-
-var base64EncodeOutputStream = function () {
-  var _buffer = 0;
-  var _buflen = 0;
-  var _length = 0;
-  var _base64 = "";
-
-  var _this = {};
-
-  var writeEncoded = function (b) {
-    _base64 += String.fromCharCode(encode(b & 0x3f));
-  };
-
-  var encode = function (n) {
-    if (n < 0) {
-      // error.
-    } else if (n < 26) {
-      return 0x41 + n;
-    } else if (n < 52) {
-      return 0x61 + (n - 26);
-    } else if (n < 62) {
-      return 0x30 + (n - 52);
-    } else if (n == 62) {
-      return 0x2b;
-    } else if (n == 63) {
-      return 0x2f;
-    }
-    throw new Error("n:" + n);
-  };
-
-  _this.writeByte = function (n) {
-    _buffer = (_buffer << 8) | (n & 0xff);
-    _buflen += 8;
-    _length += 1;
-
-    while (_buflen >= 6) {
-      writeEncoded(_buffer >>> (_buflen - 6));
-      _buflen -= 6;
-    }
-  };
-
-  _this.flush = function () {
-    if (_buflen > 0) {
-      writeEncoded(_buffer << (6 - _buflen));
-      _buffer = 0;
-      _buflen = 0;
-    }
-
-    if (_length % 3 != 0) {
-      // padding
-      var padlen = 3 - (_length % 3);
-      for (var i = 0; i < padlen; i += 1) {
-        _base64 += "=";
-      }
-    }
-  };
-
-  _this.toString = function () {
-    return _base64;
-  };
-
-  return _this;
-};
-
-//---------------------------------------------------------------------
-// base64DecodeInputStream
-//---------------------------------------------------------------------
-
-var base64DecodeInputStream = function (str) {
-  var _str = str;
-  var _pos = 0;
-  var _buffer = 0;
-  var _buflen = 0;
-
-  var _this = {};
-
-  _this.read = function () {
-    while (_buflen < 8) {
-      if (_pos >= _str.length) {
-        if (_buflen == 0) {
-          return -1;
-        }
-        throw new Error("unexpected end of file./" + _buflen);
-      }
-
-      var c = _str.charAt(_pos);
-      _pos += 1;
-
-      if (c == "=") {
-        _buflen = 0;
-        return -1;
-      } else if (c.match(/^\s$/)) {
-        // ignore if whitespace.
-        continue;
-      }
-
-      _buffer = (_buffer << 6) | decode(c.charCodeAt(0));
-      _buflen += 6;
-    }
-
-    var n = (_buffer >>> (_buflen - 8)) & 0xff;
-    _buflen -= 8;
-    return n;
-  };
-
-  var decode = function (c) {
-    if (0x41 <= c && c <= 0x5a) {
-      return c - 0x41;
-    } else if (0x61 <= c && c <= 0x7a) {
-      return c - 0x61 + 26;
-    } else if (0x30 <= c && c <= 0x39) {
-      return c - 0x30 + 52;
-    } else if (c == 0x2b) {
-      return 62;
-    } else if (c == 0x2f) {
-      return 63;
-    } else {
-      throw new Error("c:" + c);
-    }
-  };
-
-  return _this;
-};
-
-//---------------------------------------------------------------------
-// gifImage (B/W)
-//---------------------------------------------------------------------
-
-var gifImage = function (width, height) {
-  var _width = width;
-  var _height = height;
-  var _data = new Array(width * height);
-
-  var _this = {};
-
-  _this.setPixel = function (x, y, pixel) {
-    _data[y * _width + x] = pixel;
-  };
-
-  _this.write = function (out) {
-    //---------------------------------
-    // GIF Signature
-
-    out.writeString("GIF87a");
-
-    //---------------------------------
-    // Screen Descriptor
-
-    out.writeShort(_width);
-    out.writeShort(_height);
-
-    out.writeByte(0x80); // 2bit
-    out.writeByte(0);
-    out.writeByte(0);
-
-    //---------------------------------
-    // Global Color Map
-
-    // black
-    out.writeByte(0x00);
-    out.writeByte(0x00);
-    out.writeByte(0x00);
-
-    // white
-    out.writeByte(0xff);
-    out.writeByte(0xff);
-    out.writeByte(0xff);
-
-    //---------------------------------
-    // Image Descriptor
-
-    out.writeString(",");
-    out.writeShort(0);
-    out.writeShort(0);
-    out.writeShort(_width);
-    out.writeShort(_height);
-    out.writeByte(0);
-
-    //---------------------------------
-    // Local Color Map
-
-    //---------------------------------
-    // Raster Data
-
-    var lzwMinCodeSize = 2;
-    var raster = getLZWRaster(lzwMinCodeSize);
-
-    out.writeByte(lzwMinCodeSize);
-
-    var offset = 0;
-
-    while (raster.length - offset > 255) {
-      out.writeByte(255);
-      out.writeBytes(raster, offset, 255);
-      offset += 255;
-    }
-
-    out.writeByte(raster.length - offset);
-    out.writeBytes(raster, offset, raster.length - offset);
-    out.writeByte(0x00);
-
-    //---------------------------------
-    // GIF Terminator
-    out.writeString(";");
-  };
-
-  var bitOutputStream = function (out) {
-    var _out = out;
-    var _bitLength = 0;
-    var _bitBuffer = 0;
-
-    var _this = {};
-
-    _this.write = function (data, length) {
-      if (data >>> length != 0) {
-        throw new Error("length over");
-      }
-
-      while (_bitLength + length >= 8) {
-        _out.writeByte(0xff & ((data << _bitLength) | _bitBuffer));
-        length -= 8 - _bitLength;
-        data >>>= 8 - _bitLength;
-        _bitBuffer = 0;
-        _bitLength = 0;
-      }
-
-      _bitBuffer = (data << _bitLength) | _bitBuffer;
-      _bitLength = _bitLength + length;
-    };
-
-    _this.flush = function () {
-      if (_bitLength > 0) {
-        _out.writeByte(_bitBuffer);
-      }
-    };
-
-    return _this;
-  };
-
-  var getLZWRaster = function (lzwMinCodeSize) {
-    var clearCode = 1 << lzwMinCodeSize;
-    var endCode = (1 << lzwMinCodeSize) + 1;
-    var bitLength = lzwMinCodeSize + 1;
-
-    // Setup LZWTable
-    var table = lzwTable();
-
-    for (var i = 0; i < clearCode; i += 1) {
-      table.add(String.fromCharCode(i));
-    }
-    table.add(String.fromCharCode(clearCode));
-    table.add(String.fromCharCode(endCode));
-
-    var byteOut = byteArrayOutputStream();
-    var bitOut = bitOutputStream(byteOut);
-
-    // clear code
-    bitOut.write(clearCode, bitLength);
-
-    var dataIndex = 0;
-
-    var s = String.fromCharCode(_data[dataIndex]);
-    dataIndex += 1;
-
-    while (dataIndex < _data.length) {
-      var c = String.fromCharCode(_data[dataIndex]);
-      dataIndex += 1;
-
-      if (table.contains(s + c)) {
-        s = s + c;
-      } else {
-        bitOut.write(table.indexOf(s), bitLength);
-
-        if (table.size() < 0xfff) {
-          if (table.size() == 1 << bitLength) {
-            bitLength += 1;
-          }
-
-          table.add(s + c);
-        }
-
-        s = c;
-      }
-    }
-
-    bitOut.write(table.indexOf(s), bitLength);
-
-    // end code
-    bitOut.write(endCode, bitLength);
-
-    bitOut.flush();
-
-    return byteOut.toByteArray();
-  };
-
-  var lzwTable = function () {
-    var _map = {};
-    var _size = 0;
-
-    var _this = {};
-
-    _this.add = function (key) {
-      if (_this.contains(key)) {
-        throw new Error("dup key:" + key);
-      }
-      _map[key] = _size;
-      _size += 1;
-    };
-
-    _this.size = function () {
-      return _size;
-    };
-
-    _this.indexOf = function (key) {
-      return _map[key];
-    };
-
-    _this.contains = function (key) {
-      return typeof _map[key] != "undefined";
-    };
-
-    return _this;
-  };
-
-  return _this;
-};
-
-var createImgTag = function (width, height, getPixel, alt) {
-  var gif = gifImage(width, height);
-  for (var y = 0; y < height; y += 1) {
-    for (var x = 0; x < width; x += 1) {
-      gif.setPixel(x, y, getPixel(x, y));
-    }
-  }
-
-  var b = byteArrayOutputStream();
-  gif.write(b);
-
-  var base64 = base64EncodeOutputStream();
-  var bytes = b.toByteArray();
-  for (var i = 0; i < bytes.length; i += 1) {
-    base64.writeByte(bytes[i]);
-  }
-  base64.flush();
-
-  var img = "";
-  img += "data:image/gif;base64,";
-  img += base64;
-
-  return img;
-};
-
-//---------------------------------------------------------------------
-// returns qrcode function.
-
-var drawImg = function (text, options) {
-  options = options || {};
-  var typeNumber = options.typeNumber || 4;
-  var errorCorrectLevel = options.errorCorrectLevel || "M";
-  var size = options.size || 500;
-
-  var qr;
-
-  try {
-    qr = qrcode(typeNumber, errorCorrectLevel || "M");
-    qr.addData(text);
-    qr.make();
-  } catch (e) {
-    if (typeNumber >= 40) {
-      throw new Error("Text too long to encode");
-    } else {
-      return drawImg(text, {
-        size: size,
-        errorCorrectLevel: errorCorrectLevel,
-        typeNumber: typeNumber + 1,
-      });
-    }
-  }
-
-  // calc cellsize and margin
-  var cellsize = parseInt(size / qr.getModuleCount());
-  var margin = parseInt((size - qr.getModuleCount() * cellsize) / 2);
-
-  return qr.createImgTag(cellsize, margin, size);
-};
-
-export default {
-  drawImg: drawImg,
-};