//---------------------------------------------------------------------//// 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/png;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);};module.exports = { drawImg: drawImg};