FeHelper/apps/static/vendor/jquery/jquery.qrcode.min.js

/* jQuery.qrcode 0.12.0 - http://larsjung.de/jquery-qrcode/ - uses //github.com/kazuhikoarase/qrcode-generator (MIT) */
(function (qrcode) {
    'use strict';

    var $ = jQuery;

    // Wrapper for the original QR code generator.
    function QRCode(text, level, version, quiet) {

        var qr = qrcode(version, level);
        qr.addData(text);
        qr.make();

        quiet = quiet || 0;

        var qrModuleCount = qr.getModuleCount();
        var quietModuleCount = qr.getModuleCount() + 2 * quiet;

        function isDark(row, col) {

            row -= quiet;
            col -= quiet;

            if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) {
                return false;
            }

            return qr.isDark(row, col);
        }

        var addBlank = function (l, t, r, b) {

            var prevIsDark = this.isDark;
            var moduleSize = 1 / quietModuleCount;

            this.isDark = function (row, col) {

                var ml = col * moduleSize;
                var mt = row * moduleSize;
                var mr = ml + moduleSize;
                var mb = mt + moduleSize;

                return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
            };
        };

        this.text = text;
        this.level = level;
        this.version = version;
        this.moduleCount = quietModuleCount;
        this.isDark = isDark;
        this.addBlank = addBlank;
    }

    // Check if canvas is available in the browser (as Modernizr does)
    var hasCanvas = (function () {

        var elem = document.createElement('canvas');
        return Boolean(elem.getContext && elem.getContext('2d'));
    }());
    var hasArcTo = Object.prototype.toString.call(window.opera) !== '[object Opera]';

    // Returns a minimal QR code for the given text starting with version `minVersion`.
    // Returns `undefined` if `text` is too long to be encoded in `maxVersion`.
    function createQRCode(text, level, minVersion, maxVersion, quiet) {

        minVersion = Math.max(1, minVersion || 1);
        maxVersion = Math.min(40, maxVersion || 40);
        for (var version = minVersion; version <= maxVersion; version += 1) {
            try {
                return new QRCode(text, level, version, quiet);
            } catch (err) {}
        }
    }

    function drawBackgroundLabel(qr, context, settings) {

        var size = settings.size;
        var font = 'bold ' + (settings.mSize * size) + 'px ' + settings.fontname;
        var ctx = $('<canvas/>')[0].getContext('2d');

        ctx.font = font;

        var w = ctx.measureText(settings.label).width;
        var sh = settings.mSize;
        var sw = w / size;
        var sl = (1 - sw) * settings.mPosX;
        var st = (1 - sh) * settings.mPosY;
        var sr = sl + sw;
        var sb = st + sh;
        var pad = 0.01;

        if (settings.mode === 1) {
            // Strip
            qr.addBlank(0, st - pad, size, sb + pad);
        } else {
            // Box
            qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
        }

        context.fillStyle = settings.fontcolor;
        context.font = font;
        context.fillText(settings.label, sl * size, st * size + 0.75 * settings.mSize * size);
    }

    function drawBackgroundImage(qr, context, settings) {

        var size = settings.size;
        var w = settings.image.naturalWidth || 1;
        var h = settings.image.naturalHeight || 1;
        var sh = settings.mSize;
        var sw = sh * w / h;
        var sl = (1 - sw) * settings.mPosX;
        var st = (1 - sh) * settings.mPosY;
        var sr = sl + sw;
        var sb = st + sh;
        var pad = 0.01;

        if (settings.mode === 3) {
            // Strip
            qr.addBlank(0, st - pad, size, sb + pad);
        } else {
            // Box
            qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
        }

        context.drawImage(settings.image, sl * size, st * size, sw * size, sh * size);
    }

    function drawBackground(qr, context, settings) {

        if ($(settings.background).is('img')) {
            context.drawImage(settings.background, 0, 0, settings.size, settings.size);
        } else if (settings.background) {
            context.fillStyle = settings.background;
            context.fillRect(settings.left, settings.top, settings.size, settings.size);
        }

        var mode = settings.mode;
        if (mode === 1 || mode === 2) {
            drawBackgroundLabel(qr, context, settings);
        } else if (mode === 3 || mode === 4) {
            drawBackgroundImage(qr, context, settings);
        }
    }

    function drawModuleDefault(qr, context, settings, left, top, width, row, col) {

        if (qr.isDark(row, col)) {
            context.rect(left, top, width, width);
        }
    }

    function drawModuleRoundedDark(ctx, l, t, r, b, rad, nw, ne, se, sw) {

        if (nw) {
            ctx.moveTo(l + rad, t);
        } else {
            ctx.moveTo(l, t);
        }

        if (ne) {
            ctx.lineTo(r - rad, t);
            ctx.arcTo(r, t, r, b, rad);
        } else {
            ctx.lineTo(r, t);
        }

        if (se) {
            ctx.lineTo(r, b - rad);
            ctx.arcTo(r, b, l, b, rad);
        } else {
            ctx.lineTo(r, b);
        }

        if (sw) {
            ctx.lineTo(l + rad, b);
            ctx.arcTo(l, b, l, t, rad);
        } else {
            ctx.lineTo(l, b);
        }

        if (nw) {
            ctx.lineTo(l, t + rad);
            ctx.arcTo(l, t, r, t, rad);
        } else {
            ctx.lineTo(l, t);
        }
    }

    function drawModuleRoundendLight(ctx, l, t, r, b, rad, nw, ne, se, sw) {

        if (nw) {
            ctx.moveTo(l + rad, t);
            ctx.lineTo(l, t);
            ctx.lineTo(l, t + rad);
            ctx.arcTo(l, t, l + rad, t, rad);
        }

        if (ne) {
            ctx.moveTo(r - rad, t);
            ctx.lineTo(r, t);
            ctx.lineTo(r, t + rad);
            ctx.arcTo(r, t, r - rad, t, rad);
        }

        if (se) {
            ctx.moveTo(r - rad, b);
            ctx.lineTo(r, b);
            ctx.lineTo(r, b - rad);
            ctx.arcTo(r, b, r - rad, b, rad);
        }

        if (sw) {
            ctx.moveTo(l + rad, b);
            ctx.lineTo(l, b);
            ctx.lineTo(l, b - rad);
            ctx.arcTo(l, b, l + rad, b, rad);
        }
    }

    function drawModuleRounded(qr, context, settings, left, top, width, row, col) {

        var isDark = qr.isDark;
        var right = left + width;
        var bottom = top + width;
        var radius = settings.radius * width;
        var rowT = row - 1;
        var rowB = row + 1;
        var colL = col - 1;
        var colR = col + 1;
        var center = isDark(row, col);
        var northwest = isDark(rowT, colL);
        var north = isDark(rowT, col);
        var northeast = isDark(rowT, colR);
        var east = isDark(row, colR);
        var southeast = isDark(rowB, colR);
        var south = isDark(rowB, col);
        var southwest = isDark(rowB, colL);
        var west = isDark(row, colL);

        if (center) {
            drawModuleRoundedDark(context, left, top, right, bottom, radius, !north && !west, !north && !east, !south && !east, !south && !west);
        } else {
            drawModuleRoundendLight(context, left, top, right, bottom, radius, north && west && northwest, north && east && northeast, south && east && southeast, south && west && southwest);
        }
    }

    function drawModules(qr, context, settings) {

        var moduleCount = qr.moduleCount;
        var moduleSize = settings.size / moduleCount;
        var fn = drawModuleDefault;
        var row;
        var col;

        if (hasArcTo && settings.radius > 0 && settings.radius <= 0.5) {
            fn = drawModuleRounded;
        }

        context.beginPath();
        for (row = 0; row < moduleCount; row += 1) {
            for (col = 0; col < moduleCount; col += 1) {

                var l = settings.left + col * moduleSize;
                var t = settings.top + row * moduleSize;
                var w = moduleSize;

                fn(qr, context, settings, l, t, w, row, col);
            }
        }
        if ($(settings.fill).is('img')) {
            context.strokeStyle = 'rgba(0,0,0,0.5)';
            context.lineWidth = 2;
            context.stroke();
            var prev = context.globalCompositeOperation;
            context.globalCompositeOperation = 'destination-out';
            context.fill();
            context.globalCompositeOperation = prev;

            context.clip();
            context.drawImage(settings.fill, 0, 0, settings.size, settings.size);
            context.restore();
        } else {
            context.fillStyle = settings.fill;
            context.fill();
        }
    }

    // Draws QR code to the given `canvas` and returns it.
    function drawOnCanvas(canvas, settings) {

        var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
        if (!qr) {
            return null;
        }

        var $canvas = $(canvas).data('qrcode', qr);
        var context = $canvas[0].getContext('2d');

        drawBackground(qr, context, settings);
        drawModules(qr, context, settings);

        return $canvas;
    }

    // Returns a `canvas` element representing the QR code for the given settings.
    function createCanvas(settings) {

        var $canvas = $('<canvas/>').attr('width', settings.size).attr('height', settings.size);
        return drawOnCanvas($canvas, settings);
    }

    // Returns an `image` element representing the QR code for the given settings.
    function createImage(settings) {

        return $('<img/>').attr('src', createCanvas(settings)[0].toDataURL('image/png'));
    }

    // Returns a `div` element representing the QR code for the given settings.
    function createDiv(settings) {

        var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
        if (!qr) {
            return null;
        }

        // some shortcuts to improve compression
        var settings_size = settings.size;
        var settings_bgColor = settings.background;
        var math_floor = Math.floor;

        var moduleCount = qr.moduleCount;
        var moduleSize = math_floor(settings_size / moduleCount);
        var offset = math_floor(0.5 * (settings_size - moduleSize * moduleCount));

        var row;
        var col;

        var containerCSS = {
            position: 'relative',
            left: 0,
            top: 0,
            padding: 0,
            margin: 0,
            width: settings_size,
            height: settings_size
        };
        var darkCSS = {
            position: 'absolute',
            padding: 0,
            margin: 0,
            width: moduleSize,
            height: moduleSize,
            'background-color': settings.fill
        };

        var $div = $('<div/>').data('qrcode', qr).css(containerCSS);

        if (settings_bgColor) {
            $div.css('background-color', settings_bgColor);
        }

        for (row = 0; row < moduleCount; row += 1) {
            for (col = 0; col < moduleCount; col += 1) {
                if (qr.isDark(row, col)) {
                    $('<div/>')
                        .css(darkCSS)
                        .css({
                            left: offset + col * moduleSize,
                            top: offset + row * moduleSize
                        })
                        .appendTo($div);
                }
            }
        }

        return $div;
    }

    function createHTML(settings) {

        if (hasCanvas && settings.render === 'canvas') {
            return createCanvas(settings);
        } else if (hasCanvas && settings.render === 'image') {
            return createImage(settings);
        }

        return createDiv(settings);
    }

    // Plugin
    // ======

    // Default settings
    // ----------------
    var defaults = {

        // render method: `'canvas'`, `'image'` or `'div'`
        render: 'canvas',

        // version range somewhere in 1 .. 40
        minVersion: 1,
        maxVersion: 40,

        // error correction level: `'L'`, `'M'`, `'Q'` or `'H'`
        ecLevel: 'L',

        // offset in pixel if drawn onto existing canvas
        left: 0,
        top: 0,

        // size in pixel
        size: 200,

        // code color or image element
        fill: '#000',

        // background color or image element, `null` for transparent background
        background: null,

        // content
        text: 'no text',

        // corner radius relative to module width: 0.0 .. 0.5
        radius: 0,

        // quiet zone in modules
        quiet: 0,

        // modes
        // 0: normal
        // 1: label strip
        // 2: label box
        // 3: image strip
        // 4: image box
        mode: 0,

        mSize: 0.1,
        mPosX: 0.5,
        mPosY: 0.5,

        label: 'no label',
        fontname: 'sans',
        fontcolor: '#000',

        image: null
    };

    // Register the plugin
    // -------------------
    $.fn.qrcode = function (options) {

        var settings = $.extend({}, defaults, options);

        return this.each(function () {

            if (this.nodeName.toLowerCase() === 'canvas') {
                drawOnCanvas(this, settings);
            } else {
                $(this).append(createHTML(settings));
            }
        });
    };
}(function () {

    // `qrcode` is the single public function defined by the `QR Code Generator`
    //---------------------------------------------------------------------
    //
    // 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
    //
    //---------------------------------------------------------------------

    var qrcode = function() {

        //---------------------------------------------------------------------
        // qrcode
        //---------------------------------------------------------------------

        /**
         * 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) {

                cellSize = cellSize || 2;
                margin = (typeof margin == 'undefined')? cellSize * 4 : margin;

                var size = _this.getModuleCount() * cellSize + margin * 2;
                var min = margin;
                var max = size - 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() {

            var 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, 7, 37, 13],

                // 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]
            ];

            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 _bytes = qrcode.stringToBytes(data);

            var _this = {};

            _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 += '<img';
            img += '\u0020src="';
            img += 'data:image/gif;base64,';
            img += base64;
            img += '"';
            img += '\u0020width="';
            img += width;
            img += '"';
            img += '\u0020height="';
            img += height;
            img += '"';
            if (alt) {
                img += '\u0020alt="';
                img += alt;
                img += '"';
            }
            img += '/>';

            return img;
        };

        //---------------------------------------------------------------------
        // returns qrcode function.

        return qrcode;
    }();

    (function (factory) {
        if (typeof define === 'function' && define.amd) {
            define([], factory);
        } else if (typeof exports === 'object') {
            module.exports = factory();
        }
    }(function () {
        return qrcode;
    }));
    //---------------------------------------------------------------------
    //
    // QR Code Generator for JavaScript UTF8 Support (optional)
    //
    // Copyright (c) 2011 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
    //
    //---------------------------------------------------------------------

    !function(qrcode) {

        //---------------------------------------------------------------------
        // overwrite qrcode.stringToBytes
        //---------------------------------------------------------------------

        qrcode.stringToBytes = function(s) {
            // http://stackoverflow.com/questions/18729405/how-to-convert-utf8-string-to-byte-array
            function toUTF8Array(str) {
                var utf8 = [];
                for (var i=0; i < str.length; i++) {
                    var charcode = str.charCodeAt(i);
                    if (charcode < 0x80) utf8.push(charcode);
                    else if (charcode < 0x800) {
                        utf8.push(0xc0 | (charcode >> 6),
                            0x80 | (charcode & 0x3f));
                    }
                    else if (charcode < 0xd800 || charcode >= 0xe000) {
                        utf8.push(0xe0 | (charcode >> 12),
                            0x80 | ((charcode>>6) & 0x3f),
                            0x80 | (charcode & 0x3f));
                    }
                    // surrogate pair
                    else {
                        i++;
                        // UTF-16 encodes 0x10000-0x10FFFF by
                        // subtracting 0x10000 and splitting the
                        // 20 bits of 0x0-0xFFFFF into two halves
                        charcode = 0x10000 + (((charcode & 0x3ff)<<10)
                        | (str.charCodeAt(i) & 0x3ff));
                        utf8.push(0xf0 | (charcode >>18),
                            0x80 | ((charcode>>12) & 0x3f),
                            0x80 | ((charcode>>6) & 0x3f),
                            0x80 | (charcode & 0x3f));
                    }
                }
                return utf8;
            }
            return toUTF8Array(s);
        };

    }(qrcode);

    return qrcode;
}()));