大理市民卡小程序1.0提交
diff --git a/utils/util.js b/utils/util.js
new file mode 100644
index 0000000..dbadbb8
--- /dev/null
+++ b/utils/util.js
@@ -0,0 +1,19 @@
+const formatTime = date => {
+ const year = date.getFullYear()
+ const month = date.getMonth() + 1
+ const day = date.getDate()
+ const hour = date.getHours()
+ const minute = date.getMinutes()
+ const second = date.getSeconds()
+
+ return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
+}
+
+const formatNumber = n => {
+ n = n.toString()
+ return n[1] ? n : '0' + n
+}
+
+module.exports = {
+ formatTime: formatTime
+}
diff --git a/utils/weapp-qrcode.js b/utils/weapp-qrcode.js
new file mode 100644
index 0000000..638cb0c
--- /dev/null
+++ b/utils/weapp-qrcode.js
@@ -0,0 +1,1625 @@
+//---------------------------------------------------------------------
+//
+// QR Code Generator for JavaScript
+//
+// Copyright (c) 2009 Kazuhiko Arase
+//
+// URL: http://www.d-project.com/
+//
+// Licensed under the MIT license:
+// http://www.opensource.org/licenses/mit-license.php
+//
+// The word 'QR Code' is registered trademark of
+// DENSO WAVE INCORPORATED
+// http://www.denso-wave.com/qrcode/faqpatent-e.html
+//
+//---------------------------------------------------------------------
+
+//---------------微信小程序基于base64生成二维码插件修改-------------------
+/*
+ * @Modified: Pudon
+ * @demoURL: https://github.com/Pudon/weapp-qrcode
+ * @Date: 2018-09-11 14:00:05
+ * @Last Modified by: Pudon
+ * @Last Modified time: 2018-09-12 16:33:19
+ */
+//---------------------------------------------------------------------
+
+/**
+ * qrcode
+ * @param typeNumber 1 to 40
+ * @param errorCorrectLevel 'L','M','Q','H'
+ */
+var qrcode = function(typeNumber, errorCorrectLevel) {
+
+ var PAD0 = 0xEC;
+ var PAD1 = 0x11;
+
+ var _typeNumber = typeNumber;
+ var _errorCorrectLevel = QRErrorCorrectLevel[errorCorrectLevel];
+ var _modules = null;
+ var _moduleCount = 0;
+ var _dataCache = null;
+ var _dataList = new Array();
+
+ var _this = {};
+
+ var makeImpl = function(test, maskPattern) {
+
+ _moduleCount = _typeNumber * 4 + 17;
+ _modules = function(moduleCount) {
+ var modules = new Array(moduleCount);
+ for (var row = 0; row < moduleCount; row += 1) {
+ modules[row] = new Array(moduleCount);
+ for (var col = 0; col < moduleCount; col += 1) {
+ modules[row][col] = null;
+ }
+ }
+ return modules;
+ }(_moduleCount);
+
+ setupPositionProbePattern(0, 0);
+ setupPositionProbePattern(_moduleCount - 7, 0);
+ setupPositionProbePattern(0, _moduleCount - 7);
+ setupPositionAdjustPattern();
+ setupTimingPattern();
+ setupTypeInfo(test, maskPattern);
+
+ if (_typeNumber >= 7) {
+ setupTypeNumber(test);
+ }
+
+ if (_dataCache == null) {
+ _dataCache = createData(_typeNumber, _errorCorrectLevel, _dataList);
+ }
+
+ mapData(_dataCache, maskPattern);
+ };
+
+ var setupPositionProbePattern = function(row, col) {
+
+ for (var r = -1; r <= 7; r += 1) {
+
+ if (row + r <= -1 || _moduleCount <= row + r) continue;
+
+ for (var c = -1; c <= 7; c += 1) {
+
+ if (col + c <= -1 || _moduleCount <= col + c) continue;
+
+ if ( (0 <= r && r <= 6 && (c == 0 || c == 6) )
+ || (0 <= c && c <= 6 && (r == 0 || r == 6) )
+ || (2 <= r && r <= 4 && 2 <= c && c <= 4) ) {
+ _modules[row + r][col + c] = true;
+ } else {
+ _modules[row + r][col + c] = false;
+ }
+ }
+ }
+ };
+
+ var getBestMaskPattern = function() {
+
+ var minLostPoint = 0;
+ var pattern = 0;
+
+ for (var i = 0; i < 8; i += 1) {
+
+ makeImpl(true, i);
+
+ var lostPoint = QRUtil.getLostPoint(_this);
+
+ if (i == 0 || minLostPoint > lostPoint) {
+ minLostPoint = lostPoint;
+ pattern = i;
+ }
+ }
+
+ return pattern;
+ };
+
+ var setupTimingPattern = function() {
+
+ for (var r = 8; r < _moduleCount - 8; r += 1) {
+ if (_modules[r][6] != null) {
+ continue;
+ }
+ _modules[r][6] = (r % 2 == 0);
+ }
+
+ for (var c = 8; c < _moduleCount - 8; c += 1) {
+ if (_modules[6][c] != null) {
+ continue;
+ }
+ _modules[6][c] = (c % 2 == 0);
+ }
+ };
+
+ var setupPositionAdjustPattern = function() {
+
+ var pos = QRUtil.getPatternPosition(_typeNumber);
+
+ for (var i = 0; i < pos.length; i += 1) {
+
+ for (var j = 0; j < pos.length; j += 1) {
+
+ var row = pos[i];
+ var col = pos[j];
+
+ if (_modules[row][col] != null) {
+ continue;
+ }
+
+ for (var r = -2; r <= 2; r += 1) {
+
+ for (var c = -2; c <= 2; c += 1) {
+
+ if (r == -2 || r == 2 || c == -2 || c == 2
+ || (r == 0 && c == 0) ) {
+ _modules[row + r][col + c] = true;
+ } else {
+ _modules[row + r][col + c] = false;
+ }
+ }
+ }
+ }
+ }
+ };
+
+ var setupTypeNumber = function(test) {
+
+ var bits = QRUtil.getBCHTypeNumber(_typeNumber);
+
+ for (var i = 0; i < 18; i += 1) {
+ var mod = (!test && ( (bits >> i) & 1) == 1);
+ _modules[Math.floor(i / 3)][i % 3 + _moduleCount - 8 - 3] = mod;
+ }
+
+ for (var i = 0; i < 18; i += 1) {
+ var mod = (!test && ( (bits >> i) & 1) == 1);
+ _modules[i % 3 + _moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
+ }
+ };
+
+ var setupTypeInfo = function(test, maskPattern) {
+
+ var data = (_errorCorrectLevel << 3) | maskPattern;
+ var bits = QRUtil.getBCHTypeInfo(data);
+
+ // vertical
+ for (var i = 0; i < 15; i += 1) {
+
+ var mod = (!test && ( (bits >> i) & 1) == 1);
+
+ if (i < 6) {
+ _modules[i][8] = mod;
+ } else if (i < 8) {
+ _modules[i + 1][8] = mod;
+ } else {
+ _modules[_moduleCount - 15 + i][8] = mod;
+ }
+ }
+
+ // horizontal
+ for (var i = 0; i < 15; i += 1) {
+
+ var mod = (!test && ( (bits >> i) & 1) == 1);
+
+ if (i < 8) {
+ _modules[8][_moduleCount - i - 1] = mod;
+ } else if (i < 9) {
+ _modules[8][15 - i - 1 + 1] = mod;
+ } else {
+ _modules[8][15 - i - 1] = mod;
+ }
+ }
+
+ // fixed module
+ _modules[_moduleCount - 8][8] = (!test);
+ };
+
+ var mapData = function(data, maskPattern) {
+
+ var inc = -1;
+ var row = _moduleCount - 1;
+ var bitIndex = 7;
+ var byteIndex = 0;
+ var maskFunc = QRUtil.getMaskFunction(maskPattern);
+
+ for (var col = _moduleCount - 1; col > 0; col -= 2) {
+
+ if (col == 6) col -= 1;
+
+ while (true) {
+
+ for (var c = 0; c < 2; c += 1) {
+
+ if (_modules[row][col - c] == null) {
+
+ var dark = false;
+
+ if (byteIndex < data.length) {
+ dark = ( ( (data[byteIndex] >>> bitIndex) & 1) == 1);
+ }
+
+ var mask = maskFunc(row, col - c);
+
+ if (mask) {
+ dark = !dark;
+ }
+
+ _modules[row][col - c] = dark;
+ bitIndex -= 1;
+
+ if (bitIndex == -1) {
+ byteIndex += 1;
+ bitIndex = 7;
+ }
+ }
+ }
+
+ row += inc;
+
+ if (row < 0 || _moduleCount <= row) {
+ row -= inc;
+ inc = -inc;
+ break;
+ }
+ }
+ }
+ };
+
+ var createBytes = function(buffer, rsBlocks) {
+
+ var offset = 0;
+
+ var maxDcCount = 0;
+ var maxEcCount = 0;
+
+ var dcdata = new Array(rsBlocks.length);
+ var ecdata = new Array(rsBlocks.length);
+
+ for (var r = 0; r < rsBlocks.length; r += 1) {
+
+ var dcCount = rsBlocks[r].dataCount;
+ var ecCount = rsBlocks[r].totalCount - dcCount;
+
+ maxDcCount = Math.max(maxDcCount, dcCount);
+ maxEcCount = Math.max(maxEcCount, ecCount);
+
+ dcdata[r] = new Array(dcCount);
+
+ for (var i = 0; i < dcdata[r].length; i += 1) {
+ dcdata[r][i] = 0xff & buffer.getBuffer()[i + offset];
+ }
+ offset += dcCount;
+
+ var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
+ var rawPoly = qrPolynomial(dcdata[r], rsPoly.getLength() - 1);
+
+ var modPoly = rawPoly.mod(rsPoly);
+ ecdata[r] = new Array(rsPoly.getLength() - 1);
+ for (var i = 0; i < ecdata[r].length; i += 1) {
+ var modIndex = i + modPoly.getLength() - ecdata[r].length;
+ ecdata[r][i] = (modIndex >= 0)? modPoly.getAt(modIndex) : 0;
+ }
+ }
+
+ var totalCodeCount = 0;
+ for (var i = 0; i < rsBlocks.length; i += 1) {
+ totalCodeCount += rsBlocks[i].totalCount;
+ }
+
+ var data = new Array(totalCodeCount);
+ var index = 0;
+
+ for (var i = 0; i < maxDcCount; i += 1) {
+ for (var r = 0; r < rsBlocks.length; r += 1) {
+ if (i < dcdata[r].length) {
+ data[index] = dcdata[r][i];
+ index += 1;
+ }
+ }
+ }
+
+ for (var i = 0; i < maxEcCount; i += 1) {
+ for (var r = 0; r < rsBlocks.length; r += 1) {
+ if (i < ecdata[r].length) {
+ data[index] = ecdata[r][i];
+ index += 1;
+ }
+ }
+ }
+
+ return data;
+ };
+
+ var createData = function(typeNumber, errorCorrectLevel, dataList) {
+
+ var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
+
+ var buffer = qrBitBuffer();
+
+ for (var i = 0; i < dataList.length; i += 1) {
+ var data = dataList[i];
+ buffer.put(data.getMode(), 4);
+ buffer.put(data.getLength(), QRUtil.getLengthInBits(data.getMode(), typeNumber) );
+ data.write(buffer);
+ }
+
+ // calc num max data.
+ var totalDataCount = 0;
+ for (var i = 0; i < rsBlocks.length; i += 1) {
+ totalDataCount += rsBlocks[i].dataCount;
+ }
+
+ if (buffer.getLengthInBits() > totalDataCount * 8) {
+ throw new Error('code length overflow. ('
+ + buffer.getLengthInBits()
+ + '>'
+ + totalDataCount * 8
+ + ')');
+ }
+
+ // end code
+ if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
+ buffer.put(0, 4);
+ }
+
+ // padding
+ while (buffer.getLengthInBits() % 8 != 0) {
+ buffer.putBit(false);
+ }
+
+ // padding
+ while (true) {
+
+ if (buffer.getLengthInBits() >= totalDataCount * 8) {
+ break;
+ }
+ buffer.put(PAD0, 8);
+
+ if (buffer.getLengthInBits() >= totalDataCount * 8) {
+ break;
+ }
+ buffer.put(PAD1, 8);
+ }
+
+ return createBytes(buffer, rsBlocks);
+ };
+
+ _this.addData = function(data) {
+ var newData = qr8BitByte(data);
+ _dataList.push(newData);
+ _dataCache = null;
+ };
+
+ _this.isDark = function(row, col) {
+ if (row < 0 || _moduleCount <= row || col < 0 || _moduleCount <= col) {
+ throw new Error(row + ',' + col);
+ }
+ return _modules[row][col];
+ };
+
+ _this.getModuleCount = function() {
+ return _moduleCount;
+ };
+
+ _this.make = function() {
+ makeImpl(false, getBestMaskPattern() );
+ };
+
+ _this.createTableTag = function(cellSize, margin) {
+
+ cellSize = cellSize || 2;
+ margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
+
+ var qrHtml = '';
+
+ qrHtml += '<table style="';
+ qrHtml += ' border-width: 0px; border-style: none;';
+ qrHtml += ' border-collapse: collapse;';
+ qrHtml += ' padding: 0px; margin: ' + margin + 'px;';
+ qrHtml += '">';
+ qrHtml += '<tbody>';
+
+ for (var r = 0; r < _this.getModuleCount(); r += 1) {
+
+ qrHtml += '<tr>';
+
+ for (var c = 0; c < _this.getModuleCount(); c += 1) {
+ qrHtml += '<td style="';
+ qrHtml += ' border-width: 0px; border-style: none;';
+ qrHtml += ' border-collapse: collapse;';
+ qrHtml += ' padding: 0px; margin: 0px;';
+ qrHtml += ' width: ' + cellSize + 'px;';
+ qrHtml += ' height: ' + cellSize + 'px;';
+ qrHtml += ' background-color: ';
+ qrHtml += _this.isDark(r, c)? '#000000' : '#ffffff';
+ qrHtml += ';';
+ qrHtml += '"/>';
+ }
+
+ qrHtml += '</tr>';
+ }
+
+ qrHtml += '</tbody>';
+ qrHtml += '</table>';
+
+ return qrHtml;
+ };
+
+ _this.createImgTag = function(cellSize, margin, size) {
+
+ cellSize = cellSize || 2;
+ margin = (typeof margin == 'undefined')? cellSize * 4 : margin;
+
+ var min = margin;
+ var max = _this.getModuleCount() * cellSize + margin;
+
+ return createImgTag(size, size, function(x, y) {
+ if (min <= x && x < max && min <= y && y < max) {
+ var c = Math.floor( (x - min) / cellSize);
+ var r = Math.floor( (y - min) / cellSize);
+ return _this.isDark(r, c)? 0 : 1;
+ } else {
+ return 1;
+ }
+ } );
+ };
+
+ return _this;
+};
+
+//---------------------------------------------------------------------
+// qrcode.stringToBytes
+//---------------------------------------------------------------------
+
+qrcode.stringToBytes = function(s) {
+ var bytes = new Array();
+ for (var i = 0; i < s.length; i += 1) {
+ var c = s.charCodeAt(i);
+ bytes.push(c & 0xff);
+ }
+ return bytes;
+};
+
+//---------------------------------------------------------------------
+// qrcode.createStringToBytes
+//---------------------------------------------------------------------
+
+/**
+ * @param unicodeData base64 string of byte array.
+ * [16bit Unicode],[16bit Bytes], ...
+ * @param numChars
+ */
+qrcode.createStringToBytes = function(unicodeData, numChars) {
+
+ // create conversion map.
+
+ var unicodeMap = function() {
+
+ var bin = base64DecodeInputStream(unicodeData);
+ var read = function() {
+ var b = bin.read();
+ if (b == -1) throw new Error();
+ return b;
+ };
+
+ var count = 0;
+ var unicodeMap = {};
+ while (true) {
+ var b0 = bin.read();
+ if (b0 == -1) break;
+ var b1 = read();
+ var b2 = read();
+ var b3 = read();
+ var k = String.fromCharCode( (b0 << 8) | b1);
+ var v = (b2 << 8) | b3;
+ unicodeMap[k] = v;
+ count += 1;
+ }
+ if (count != numChars) {
+ throw new Error(count + ' != ' + numChars);
+ }
+
+ return unicodeMap;
+ }();
+
+ var unknownChar = '?'.charCodeAt(0);
+
+ return function(s) {
+ var bytes = new Array();
+ for (var i = 0; i < s.length; i += 1) {
+ var c = s.charCodeAt(i);
+ if (c < 128) {
+ bytes.push(c);
+ } else {
+ var b = unicodeMap[s.charAt(i)];
+ if (typeof b == 'number') {
+ if ( (b & 0xff) == b) {
+ // 1byte
+ bytes.push(b);
+ } else {
+ // 2bytes
+ bytes.push(b >>> 8);
+ bytes.push(b & 0xff);
+ }
+ } else {
+ bytes.push(unknownChar);
+ }
+ }
+ }
+ return bytes;
+ };
+};
+
+//---------------------------------------------------------------------
+// QRMode
+//---------------------------------------------------------------------
+
+var QRMode = {
+ MODE_NUMBER : 1 << 0,
+ MODE_ALPHA_NUM : 1 << 1,
+ MODE_8BIT_BYTE : 1 << 2,
+ MODE_KANJI : 1 << 3
+};
+
+//---------------------------------------------------------------------
+// QRErrorCorrectLevel
+//---------------------------------------------------------------------
+
+var QRErrorCorrectLevel = {
+ L : 1,
+ M : 0,
+ Q : 3,
+ H : 2
+};
+
+//---------------------------------------------------------------------
+// QRMaskPattern
+//---------------------------------------------------------------------
+
+var QRMaskPattern = {
+ PATTERN000 : 0,
+ PATTERN001 : 1,
+ PATTERN010 : 2,
+ PATTERN011 : 3,
+ PATTERN100 : 4,
+ PATTERN101 : 5,
+ PATTERN110 : 6,
+ PATTERN111 : 7
+};
+
+//---------------------------------------------------------------------
+// QRUtil
+//---------------------------------------------------------------------
+
+var QRUtil = function() {
+
+ var PATTERN_POSITION_TABLE = [
+ [],
+ [6, 18],
+ [6, 22],
+ [6, 26],
+ [6, 30],
+ [6, 34],
+ [6, 22, 38],
+ [6, 24, 42],
+ [6, 26, 46],
+ [6, 28, 50],
+ [6, 30, 54],
+ [6, 32, 58],
+ [6, 34, 62],
+ [6, 26, 46, 66],
+ [6, 26, 48, 70],
+ [6, 26, 50, 74],
+ [6, 30, 54, 78],
+ [6, 30, 56, 82],
+ [6, 30, 58, 86],
+ [6, 34, 62, 90],
+ [6, 28, 50, 72, 94],
+ [6, 26, 50, 74, 98],
+ [6, 30, 54, 78, 102],
+ [6, 28, 54, 80, 106],
+ [6, 32, 58, 84, 110],
+ [6, 30, 58, 86, 114],
+ [6, 34, 62, 90, 118],
+ [6, 26, 50, 74, 98, 122],
+ [6, 30, 54, 78, 102, 126],
+ [6, 26, 52, 78, 104, 130],
+ [6, 30, 56, 82, 108, 134],
+ [6, 34, 60, 86, 112, 138],
+ [6, 30, 58, 86, 114, 142],
+ [6, 34, 62, 90, 118, 146],
+ [6, 30, 54, 78, 102, 126, 150],
+ [6, 24, 50, 76, 102, 128, 154],
+ [6, 28, 54, 80, 106, 132, 158],
+ [6, 32, 58, 84, 110, 136, 162],
+ [6, 26, 54, 82, 110, 138, 166],
+ [6, 30, 58, 86, 114, 142, 170]
+ ];
+ var G15 = (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0);
+ var G18 = (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0);
+ var G15_MASK = (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1);
+
+ var _this = {};
+
+ var getBCHDigit = function(data) {
+ var digit = 0;
+ while (data != 0) {
+ digit += 1;
+ data >>>= 1;
+ }
+ return digit;
+ };
+
+ _this.getBCHTypeInfo = function(data) {
+ var d = data << 10;
+ while (getBCHDigit(d) - getBCHDigit(G15) >= 0) {
+ d ^= (G15 << (getBCHDigit(d) - getBCHDigit(G15) ) );
+ }
+ return ( (data << 10) | d) ^ G15_MASK;
+ };
+
+ _this.getBCHTypeNumber = function(data) {
+ var d = data << 12;
+ while (getBCHDigit(d) - getBCHDigit(G18) >= 0) {
+ d ^= (G18 << (getBCHDigit(d) - getBCHDigit(G18) ) );
+ }
+ return (data << 12) | d;
+ };
+
+ _this.getPatternPosition = function(typeNumber) {
+ return PATTERN_POSITION_TABLE[typeNumber - 1];
+ };
+
+ _this.getMaskFunction = function(maskPattern) {
+
+ switch (maskPattern) {
+
+ case QRMaskPattern.PATTERN000 :
+ return function(i, j) { return (i + j) % 2 == 0; };
+ case QRMaskPattern.PATTERN001 :
+ return function(i, j) { return i % 2 == 0; };
+ case QRMaskPattern.PATTERN010 :
+ return function(i, j) { return j % 3 == 0; };
+ case QRMaskPattern.PATTERN011 :
+ return function(i, j) { return (i + j) % 3 == 0; };
+ case QRMaskPattern.PATTERN100 :
+ return function(i, j) { return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 == 0; };
+ case QRMaskPattern.PATTERN101 :
+ return function(i, j) { return (i * j) % 2 + (i * j) % 3 == 0; };
+ case QRMaskPattern.PATTERN110 :
+ return function(i, j) { return ( (i * j) % 2 + (i * j) % 3) % 2 == 0; };
+ case QRMaskPattern.PATTERN111 :
+ return function(i, j) { return ( (i * j) % 3 + (i + j) % 2) % 2 == 0; };
+
+ default :
+ throw new Error('bad maskPattern:' + maskPattern);
+ }
+ };
+
+ _this.getErrorCorrectPolynomial = function(errorCorrectLength) {
+ var a = qrPolynomial([1], 0);
+ for (var i = 0; i < errorCorrectLength; i += 1) {
+ a = a.multiply(qrPolynomial([1, QRMath.gexp(i)], 0) );
+ }
+ return a;
+ };
+
+ _this.getLengthInBits = function(mode, type) {
+
+ if (1 <= type && type < 10) {
+
+ // 1 - 9
+
+ switch(mode) {
+ case QRMode.MODE_NUMBER : return 10;
+ case QRMode.MODE_ALPHA_NUM : return 9;
+ case QRMode.MODE_8BIT_BYTE : return 8;
+ case QRMode.MODE_KANJI : return 8;
+ default :
+ throw new Error('mode:' + mode);
+ }
+
+ } else if (type < 27) {
+
+ // 10 - 26
+
+ switch(mode) {
+ case QRMode.MODE_NUMBER : return 12;
+ case QRMode.MODE_ALPHA_NUM : return 11;
+ case QRMode.MODE_8BIT_BYTE : return 16;
+ case QRMode.MODE_KANJI : return 10;
+ default :
+ throw new Error('mode:' + mode);
+ }
+
+ } else if (type < 41) {
+
+ // 27 - 40
+
+ switch(mode) {
+ case QRMode.MODE_NUMBER : return 14;
+ case QRMode.MODE_ALPHA_NUM : return 13;
+ case QRMode.MODE_8BIT_BYTE : return 16;
+ case QRMode.MODE_KANJI : return 12;
+ default :
+ throw new Error('mode:' + mode);
+ }
+
+ } else {
+ throw new Error('type:' + type);
+ }
+ };
+
+ _this.getLostPoint = function(qrcode) {
+
+ var moduleCount = qrcode.getModuleCount();
+
+ var lostPoint = 0;
+
+ // LEVEL1
+
+ for (var row = 0; row < moduleCount; row += 1) {
+ for (var col = 0; col < moduleCount; col += 1) {
+
+ var sameCount = 0;
+ var dark = qrcode.isDark(row, col);
+
+ for (var r = -1; r <= 1; r += 1) {
+
+ if (row + r < 0 || moduleCount <= row + r) {
+ continue;
+ }
+
+ for (var c = -1; c <= 1; c += 1) {
+
+ if (col + c < 0 || moduleCount <= col + c) {
+ continue;
+ }
+
+ if (r == 0 && c == 0) {
+ continue;
+ }
+
+ if (dark == qrcode.isDark(row + r, col + c) ) {
+ sameCount += 1;
+ }
+ }
+ }
+
+ if (sameCount > 5) {
+ lostPoint += (3 + sameCount - 5);
+ }
+ }
+ };
+
+ // LEVEL2
+
+ for (var row = 0; row < moduleCount - 1; row += 1) {
+ for (var col = 0; col < moduleCount - 1; col += 1) {
+ var count = 0;
+ if (qrcode.isDark(row, col) ) count += 1;
+ if (qrcode.isDark(row + 1, col) ) count += 1;
+ if (qrcode.isDark(row, col + 1) ) count += 1;
+ if (qrcode.isDark(row + 1, col + 1) ) count += 1;
+ if (count == 0 || count == 4) {
+ lostPoint += 3;
+ }
+ }
+ }
+
+ // LEVEL3
+
+ for (var row = 0; row < moduleCount; row += 1) {
+ for (var col = 0; col < moduleCount - 6; col += 1) {
+ if (qrcode.isDark(row, col)
+ && !qrcode.isDark(row, col + 1)
+ && qrcode.isDark(row, col + 2)
+ && qrcode.isDark(row, col + 3)
+ && qrcode.isDark(row, col + 4)
+ && !qrcode.isDark(row, col + 5)
+ && qrcode.isDark(row, col + 6) ) {
+ lostPoint += 40;
+ }
+ }
+ }
+
+ for (var col = 0; col < moduleCount; col += 1) {
+ for (var row = 0; row < moduleCount - 6; row += 1) {
+ if (qrcode.isDark(row, col)
+ && !qrcode.isDark(row + 1, col)
+ && qrcode.isDark(row + 2, col)
+ && qrcode.isDark(row + 3, col)
+ && qrcode.isDark(row + 4, col)
+ && !qrcode.isDark(row + 5, col)
+ && qrcode.isDark(row + 6, col) ) {
+ lostPoint += 40;
+ }
+ }
+ }
+
+ // LEVEL4
+
+ var darkCount = 0;
+
+ for (var col = 0; col < moduleCount; col += 1) {
+ for (var row = 0; row < moduleCount; row += 1) {
+ if (qrcode.isDark(row, col) ) {
+ darkCount += 1;
+ }
+ }
+ }
+
+ var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
+ lostPoint += ratio * 10;
+
+ return lostPoint;
+ };
+
+ return _this;
+}();
+
+//---------------------------------------------------------------------
+// QRMath
+//---------------------------------------------------------------------
+
+var QRMath = function() {
+
+ var EXP_TABLE = new Array(256);
+ var LOG_TABLE = new Array(256);
+
+ // initialize tables
+ for (var i = 0; i < 8; i += 1) {
+ EXP_TABLE[i] = 1 << i;
+ }
+ for (var i = 8; i < 256; i += 1) {
+ EXP_TABLE[i] = EXP_TABLE[i - 4]
+ ^ EXP_TABLE[i - 5]
+ ^ EXP_TABLE[i - 6]
+ ^ EXP_TABLE[i - 8];
+ }
+ for (var i = 0; i < 255; i += 1) {
+ LOG_TABLE[EXP_TABLE[i] ] = i;
+ }
+
+ var _this = {};
+
+ _this.glog = function(n) {
+
+ if (n < 1) {
+ throw new Error('glog(' + n + ')');
+ }
+
+ return LOG_TABLE[n];
+ };
+
+ _this.gexp = function(n) {
+
+ while (n < 0) {
+ n += 255;
+ }
+
+ while (n >= 256) {
+ n -= 255;
+ }
+
+ return EXP_TABLE[n];
+ };
+
+ return _this;
+}();
+
+//---------------------------------------------------------------------
+// qrPolynomial
+//---------------------------------------------------------------------
+
+function qrPolynomial(num, shift) {
+
+ if (typeof num.length == 'undefined') {
+ throw new Error(num.length + '/' + shift);
+ }
+
+ var _num = function() {
+ var offset = 0;
+ while (offset < num.length && num[offset] == 0) {
+ offset += 1;
+ }
+ var _num = new Array(num.length - offset + shift);
+ for (var i = 0; i < num.length - offset; i += 1) {
+ _num[i] = num[i + offset];
+ }
+ return _num;
+ }();
+
+ var _this = {};
+
+ _this.getAt = function(index) {
+ return _num[index];
+ };
+
+ _this.getLength = function() {
+ return _num.length;
+ };
+
+ _this.multiply = function(e) {
+
+ var num = new Array(_this.getLength() + e.getLength() - 1);
+
+ for (var i = 0; i < _this.getLength(); i += 1) {
+ for (var j = 0; j < e.getLength(); j += 1) {
+ num[i + j] ^= QRMath.gexp(QRMath.glog(_this.getAt(i) ) + QRMath.glog(e.getAt(j) ) );
+ }
+ }
+
+ return qrPolynomial(num, 0);
+ };
+
+ _this.mod = function(e) {
+
+ if (_this.getLength() - e.getLength() < 0) {
+ return _this;
+ }
+
+ var ratio = QRMath.glog(_this.getAt(0) ) - QRMath.glog(e.getAt(0) );
+
+ var num = new Array(_this.getLength() );
+ for (var i = 0; i < _this.getLength(); i += 1) {
+ num[i] = _this.getAt(i);
+ }
+
+ for (var i = 0; i < e.getLength(); i += 1) {
+ num[i] ^= QRMath.gexp(QRMath.glog(e.getAt(i) ) + ratio);
+ }
+
+ // recursive call
+ return qrPolynomial(num, 0).mod(e);
+ };
+
+ return _this;
+};
+
+//---------------------------------------------------------------------
+// QRRSBlock
+//---------------------------------------------------------------------
+
+var QRRSBlock = function() {
+
+
+ // [1: [L, M, Q, H], ..]
+ var RS_BLOCK_TABLE=[[1,26,19],[1,26,16],[1,26,13],[1,26,9],[1,44,34],[1,44,28],[1,44,22],[1,44,16],[1,70,55],[1,70,44],[2,35,17],[2,35,13],[1,100,80],[2,50,32],[2,50,24],[4,25,9],[1,134,108],[2,67,43],[2,33,15,2,34,16],[2,33,11,2,34,12],[2,86,68],[4,43,27],[4,43,19],[4,43,15],[2,98,78],[4,49,31],[2,32,14,4,33,15],[4,39,13,1,40,14],[2,121,97],[2,60,38,2,61,39],[4,40,18,2,41,19],[4,40,14,2,41,15],[2,146,116],[3,58,36,2,59,37],[4,36,16,4,37,17],[4,36,12,4,37,13],[2,86,68,2,87,69],[4,69,43,1,70,44],[6,43,19,2,44,20],[6,43,15,2,44,16],[4,101,81],[1,80,50,4,81,51],[4,50,22,4,51,23],[3,36,12,8,37,13],[2,116,92,2,117,93],[6,58,36,2,59,37],[4,46,20,6,47,21],[7,42,14,4,43,15],[4,133,107],[8,59,37,1,60,38],[8,44,20,4,45,21],[12,33,11,4,34,12],[3,145,115,1,146,116],[4,64,40,5,65,41],[11,36,16,5,37,17],[11,36,12,5,37,13],[5,109,87,1,110,88],[5,65,41,5,66,42],[5,54,24,7,55,25],[11,36,12],[5,122,98,1,123,99],[7,73,45,3,74,46],[15,43,19,2,44,20],[3,45,15,13,46,16],[1,135,107,5,136,108],[10,74,46,1,75,47],[1,50,22,15,51,23],[2,42,14,17,43,15],[5,150,120,1,151,121],[9,69,43,4,70,44],[17,50,22,1,51,23],[2,42,14,19,43,15],[3,141,113,4,142,114],[3,70,44,11,71,45],[17,47,21,4,48,22],[9,39,13,16,40,14],[3,135,107,5,136,108],[3,67,41,13,68,42],[15,54,24,5,55,25],[15,43,15,10,44,16],[4,144,116,4,145,117],[17,68,42],[17,50,22,6,51,23],[19,46,16,6,47,17],[2,139,111,7,140,112],[17,74,46],[7,54,24,16,55,25],[34,37,13],[4,151,121,5,152,122],[4,75,47,14,76,48],[11,54,24,14,55,25],[16,45,15,14,46,16],[6,147,117,4,148,118],[6,73,45,14,74,46],[11,54,24,16,55,25],[30,46,16,2,47,17],[8,132,106,4,133,107],[8,75,47,13,76,48],[7,54,24,22,55,25],[22,45,15,13,46,16],[10,142,114,2,143,115],[19,74,46,4,75,47],[28,50,22,6,51,23],[33,46,16,4,47,17],[8,152,122,4,153,123],[22,73,45,3,74,46],[8,53,23,26,54,24],[12,45,15,28,46,16],[3,147,117,10,148,118],[3,73,45,23,74,46],[4,54,24,31,55,25],[11,45,15,31,46,16],[7,146,116,7,147,117],[21,73,45,7,74,46],[1,53,23,37,54,24],[19,45,15,26,46,16],[5,145,115,10,146,116],[19,75,47,10,76,48],[15,54,24,25,55,25],[23,45,15,25,46,16],[13,145,115,3,146,116],[2,74,46,29,75,47],[42,54,24,1,55,25],[23,45,15,28,46,16],[17,145,115],[10,74,46,23,75,47],[10,54,24,35,55,25],[19,45,15,35,46,16],[17,145,115,1,146,116],[14,74,46,21,75,47],[29,54,24,19,55,25],[11,45,15,46,46,16],[13,145,115,6,146,116],[14,74,46,23,75,47],[44,54,24,7,55,25],[59,46,16,1,47,17],[12,151,121,7,152,122],[12,75,47,26,76,48],[39,54,24,14,55,25],[22,45,15,41,46,16],[6,151,121,14,152,122],[6,75,47,34,76,48],[46,54,24,10,55,25],[2,45,15,64,46,16],[17,152,122,4,153,123],[29,74,46,14,75,47],[49,54,24,10,55,25],[24,45,15,46,46,16],[4,152,122,18,153,123],[13,74,46,32,75,47],[48,54,24,14,55,25],[42,45,15,32,46,16],[20,147,117,4,148,118],[40,75,47,7,76,48],[43,54,24,22,55,25],[10,45,15,67,46,16],[19,148,118,6,149,119],[18,75,47,31,76,48],[34,54,24,34,55,25],[20,45,15,61,46,16]];
+
+ var qrRSBlock = function(totalCount, dataCount) {
+ var _this = {};
+ _this.totalCount = totalCount;
+ _this.dataCount = dataCount;
+ return _this;
+ };
+
+ var _this = {};
+
+ var getRsBlockTable = function(typeNumber, errorCorrectLevel) {
+
+ switch(errorCorrectLevel) {
+ case QRErrorCorrectLevel.L :
+ return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
+ case QRErrorCorrectLevel.M :
+ return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
+ case QRErrorCorrectLevel.Q :
+ return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
+ case QRErrorCorrectLevel.H :
+ return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
+ default :
+ return undefined;
+ }
+ };
+
+ _this.getRSBlocks = function(typeNumber, errorCorrectLevel) {
+
+ var rsBlock = getRsBlockTable(typeNumber, errorCorrectLevel);
+
+ if (typeof rsBlock == 'undefined') {
+ throw new Error('bad rs block @ typeNumber:' + typeNumber +
+ '/errorCorrectLevel:' + errorCorrectLevel);
+ }
+
+ var length = rsBlock.length / 3;
+
+ var list = new Array();
+
+ for (var i = 0; i < length; i += 1) {
+
+ var count = rsBlock[i * 3 + 0];
+ var totalCount = rsBlock[i * 3 + 1];
+ var dataCount = rsBlock[i * 3 + 2];
+
+ for (var j = 0; j < count; j += 1) {
+ list.push(qrRSBlock(totalCount, dataCount) );
+ }
+ }
+
+ return list;
+ };
+
+ return _this;
+}();
+
+//---------------------------------------------------------------------
+// qrBitBuffer
+//---------------------------------------------------------------------
+
+var qrBitBuffer = function() {
+
+ var _buffer = new Array();
+ var _length = 0;
+
+ var _this = {};
+
+ _this.getBuffer = function() {
+ return _buffer;
+ };
+
+ _this.getAt = function(index) {
+ var bufIndex = Math.floor(index / 8);
+ return ( (_buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1;
+ };
+
+ _this.put = function(num, length) {
+ for (var i = 0; i < length; i += 1) {
+ _this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1);
+ }
+ };
+
+ _this.getLengthInBits = function() {
+ return _length;
+ };
+
+ _this.putBit = function(bit) {
+
+ var bufIndex = Math.floor(_length / 8);
+ if (_buffer.length <= bufIndex) {
+ _buffer.push(0);
+ }
+
+ if (bit) {
+ _buffer[bufIndex] |= (0x80 >>> (_length % 8) );
+ }
+
+ _length += 1;
+ };
+
+ return _this;
+};
+
+//---------------------------------------------------------------------
+// qr8BitByte
+//---------------------------------------------------------------------
+
+var qr8BitByte = function(data) {
+
+ var _mode = QRMode.MODE_8BIT_BYTE;
+ var _data = data;
+ var _parsedData = [];
+
+ var _this = {};
+
+
+ // Added to support UTF-8 Characters
+ for (var i = 0, l = _data.length; i < l; i++) {
+ var byteArray = [];
+ var code = _data.charCodeAt(i);
+
+ if (code > 0x10000) {
+ byteArray[0] = 0xF0 | ((code & 0x1C0000) >>> 18);
+ byteArray[1] = 0x80 | ((code & 0x3F000) >>> 12);
+ byteArray[2] = 0x80 | ((code & 0xFC0) >>> 6);
+ byteArray[3] = 0x80 | (code & 0x3F);
+ } else if (code > 0x800) {
+ byteArray[0] = 0xE0 | ((code & 0xF000) >>> 12);
+ byteArray[1] = 0x80 | ((code & 0xFC0) >>> 6);
+ byteArray[2] = 0x80 | (code & 0x3F);
+ } else if (code > 0x80) {
+ byteArray[0] = 0xC0 | ((code & 0x7C0) >>> 6);
+ byteArray[1] = 0x80 | (code & 0x3F);
+ } else {
+ byteArray[0] = code;
+ }
+
+ // Fix Unicode corruption bug
+ _parsedData.push(byteArray);
+ }
+
+ _parsedData = Array.prototype.concat.apply([], _parsedData);
+
+ if (_parsedData.length != _data.length) {
+ _parsedData.unshift(191);
+ _parsedData.unshift(187);
+ _parsedData.unshift(239);
+ }
+
+ var _bytes = _parsedData;
+
+ _this.getMode = function() {
+ return _mode;
+ };
+
+ _this.getLength = function(buffer) {
+ return _bytes.length;
+ };
+
+ _this.write = function(buffer) {
+ for (var i = 0; i < _bytes.length; i += 1) {
+ buffer.put(_bytes[i], 8);
+ }
+ };
+
+ return _this;
+};
+
+//=====================================================================
+// GIF Support etc.
+//
+
+//---------------------------------------------------------------------
+// byteArrayOutputStream
+//---------------------------------------------------------------------
+
+var byteArrayOutputStream = function() {
+
+ var _bytes = new Array();
+
+ var _this = {};
+
+ _this.writeByte = function(b) {
+ _bytes.push(b & 0xff);
+ };
+
+ _this.writeShort = function(i) {
+ _this.writeByte(i);
+ _this.writeByte(i >>> 8);
+ };
+
+ _this.writeBytes = function(b, off, len) {
+ off = off || 0;
+ len = len || b.length;
+ for (var i = 0; i < len; i += 1) {
+ _this.writeByte(b[i + off]);
+ }
+ };
+
+ _this.writeString = function(s) {
+ for (var i = 0; i < s.length; i += 1) {
+ _this.writeByte(s.charCodeAt(i) );
+ }
+ };
+
+ _this.toByteArray = function() {
+ return _bytes;
+ };
+
+ _this.toString = function() {
+ var s = '';
+ s += '[';
+ for (var i = 0; i < _bytes.length; i += 1) {
+ if (i > 0) {
+ s += ',';
+ }
+ s += _bytes[i];
+ }
+ s += ']';
+ return s;
+ };
+
+ return _this;
+};
+
+//---------------------------------------------------------------------
+// base64EncodeOutputStream
+//---------------------------------------------------------------------
+
+var base64EncodeOutputStream = function() {
+
+ var _buffer = 0;
+ var _buflen = 0;
+ var _length = 0;
+ var _base64 = '';
+
+ var _this = {};
+
+ var writeEncoded = function(b) {
+ _base64 += String.fromCharCode(encode(b & 0x3f) );
+ };
+
+ var encode = function(n) {
+ if (n < 0) {
+ // error.
+ } else if (n < 26) {
+ return 0x41 + n;
+ } else if (n < 52) {
+ return 0x61 + (n - 26);
+ } else if (n < 62) {
+ return 0x30 + (n - 52);
+ } else if (n == 62) {
+ return 0x2b;
+ } else if (n == 63) {
+ return 0x2f;
+ }
+ throw new Error('n:' + n);
+ };
+
+ _this.writeByte = function(n) {
+
+ _buffer = (_buffer << 8) | (n & 0xff);
+ _buflen += 8;
+ _length += 1;
+
+ while (_buflen >= 6) {
+ writeEncoded(_buffer >>> (_buflen - 6) );
+ _buflen -= 6;
+ }
+ };
+
+ _this.flush = function() {
+
+ if (_buflen > 0) {
+ writeEncoded(_buffer << (6 - _buflen) );
+ _buffer = 0;
+ _buflen = 0;
+ }
+
+ if (_length % 3 != 0) {
+ // padding
+ var padlen = 3 - _length % 3;
+ for (var i = 0; i < padlen; i += 1) {
+ _base64 += '=';
+ }
+ }
+ };
+
+ _this.toString = function() {
+ return _base64;
+ };
+
+ return _this;
+};
+
+//---------------------------------------------------------------------
+// base64DecodeInputStream
+//---------------------------------------------------------------------
+
+var base64DecodeInputStream = function(str) {
+
+ var _str = str;
+ var _pos = 0;
+ var _buffer = 0;
+ var _buflen = 0;
+
+ var _this = {};
+
+ _this.read = function() {
+
+ while (_buflen < 8) {
+
+ if (_pos >= _str.length) {
+ if (_buflen == 0) {
+ return -1;
+ }
+ throw new Error('unexpected end of file./' + _buflen);
+ }
+
+ var c = _str.charAt(_pos);
+ _pos += 1;
+
+ if (c == '=') {
+ _buflen = 0;
+ return -1;
+ } else if (c.match(/^\s$/) ) {
+ // ignore if whitespace.
+ continue;
+ }
+
+ _buffer = (_buffer << 6) | decode(c.charCodeAt(0) );
+ _buflen += 6;
+ }
+
+ var n = (_buffer >>> (_buflen - 8) ) & 0xff;
+ _buflen -= 8;
+ return n;
+ };
+
+ var decode = function(c) {
+ if (0x41 <= c && c <= 0x5a) {
+ return c - 0x41;
+ } else if (0x61 <= c && c <= 0x7a) {
+ return c - 0x61 + 26;
+ } else if (0x30 <= c && c <= 0x39) {
+ return c - 0x30 + 52;
+ } else if (c == 0x2b) {
+ return 62;
+ } else if (c == 0x2f) {
+ return 63;
+ } else {
+ throw new Error('c:' + c);
+ }
+ };
+
+ return _this;
+};
+
+//---------------------------------------------------------------------
+// gifImage (B/W)
+//---------------------------------------------------------------------
+
+var gifImage = function(width, height) {
+
+ var _width = width;
+ var _height = height;
+ var _data = new Array(width * height);
+
+ var _this = {};
+
+ _this.setPixel = function(x, y, pixel) {
+ _data[y * _width + x] = pixel;
+ };
+
+ _this.write = function(out) {
+
+ //---------------------------------
+ // GIF Signature
+
+ out.writeString('GIF87a');
+
+ //---------------------------------
+ // Screen Descriptor
+
+ out.writeShort(_width);
+ out.writeShort(_height);
+
+ out.writeByte(0x80); // 2bit
+ out.writeByte(0);
+ out.writeByte(0);
+
+ //---------------------------------
+ // Global Color Map
+
+ // black
+ out.writeByte(0x00);
+ out.writeByte(0x00);
+ out.writeByte(0x00);
+
+ // white
+ out.writeByte(0xff);
+ out.writeByte(0xff);
+ out.writeByte(0xff);
+
+ //---------------------------------
+ // Image Descriptor
+
+ out.writeString(',');
+ out.writeShort(0);
+ out.writeShort(0);
+ out.writeShort(_width);
+ out.writeShort(_height);
+ out.writeByte(0);
+
+ //---------------------------------
+ // Local Color Map
+
+ //---------------------------------
+ // Raster Data
+
+ var lzwMinCodeSize = 2;
+ var raster = getLZWRaster(lzwMinCodeSize);
+
+ out.writeByte(lzwMinCodeSize);
+
+ var offset = 0;
+
+ while (raster.length - offset > 255) {
+ out.writeByte(255);
+ out.writeBytes(raster, offset, 255);
+ offset += 255;
+ }
+
+ out.writeByte(raster.length - offset);
+ out.writeBytes(raster, offset, raster.length - offset);
+ out.writeByte(0x00);
+
+ //---------------------------------
+ // GIF Terminator
+ out.writeString(';');
+ };
+
+ var bitOutputStream = function(out) {
+
+ var _out = out;
+ var _bitLength = 0;
+ var _bitBuffer = 0;
+
+ var _this = {};
+
+ _this.write = function(data, length) {
+
+ if ( (data >>> length) != 0) {
+ throw new Error('length over');
+ }
+
+ while (_bitLength + length >= 8) {
+ _out.writeByte(0xff & ( (data << _bitLength) | _bitBuffer) );
+ length -= (8 - _bitLength);
+ data >>>= (8 - _bitLength);
+ _bitBuffer = 0;
+ _bitLength = 0;
+ }
+
+ _bitBuffer = (data << _bitLength) | _bitBuffer;
+ _bitLength = _bitLength + length;
+ };
+
+ _this.flush = function() {
+ if (_bitLength > 0) {
+ _out.writeByte(_bitBuffer);
+ }
+ };
+
+ return _this;
+ };
+
+ var getLZWRaster = function(lzwMinCodeSize) {
+
+ var clearCode = 1 << lzwMinCodeSize;
+ var endCode = (1 << lzwMinCodeSize) + 1;
+ var bitLength = lzwMinCodeSize + 1;
+
+ // Setup LZWTable
+ var table = lzwTable();
+
+ for (var i = 0; i < clearCode; i += 1) {
+ table.add(String.fromCharCode(i) );
+ }
+ table.add(String.fromCharCode(clearCode) );
+ table.add(String.fromCharCode(endCode) );
+
+ var byteOut = byteArrayOutputStream();
+ var bitOut = bitOutputStream(byteOut);
+
+ // clear code
+ bitOut.write(clearCode, bitLength);
+
+ var dataIndex = 0;
+
+ var s = String.fromCharCode(_data[dataIndex]);
+ dataIndex += 1;
+
+ while (dataIndex < _data.length) {
+
+ var c = String.fromCharCode(_data[dataIndex]);
+ dataIndex += 1;
+
+ if (table.contains(s + c) ) {
+
+ s = s + c;
+
+ } else {
+
+ bitOut.write(table.indexOf(s), bitLength);
+
+ if (table.size() < 0xfff) {
+
+ if (table.size() == (1 << bitLength) ) {
+ bitLength += 1;
+ }
+
+ table.add(s + c);
+ }
+
+ s = c;
+ }
+ }
+
+ bitOut.write(table.indexOf(s), bitLength);
+
+ // end code
+ bitOut.write(endCode, bitLength);
+
+ bitOut.flush();
+
+ return byteOut.toByteArray();
+ };
+
+ var lzwTable = function() {
+
+ var _map = {};
+ var _size = 0;
+
+ var _this = {};
+
+ _this.add = function(key) {
+ if (_this.contains(key) ) {
+ throw new Error('dup key:' + key);
+ }
+ _map[key] = _size;
+ _size += 1;
+ };
+
+ _this.size = function() {
+ return _size;
+ };
+
+ _this.indexOf = function(key) {
+ return _map[key];
+ };
+
+ _this.contains = function(key) {
+ return typeof _map[key] != 'undefined';
+ };
+
+ return _this;
+ };
+
+ return _this;
+};
+
+var createImgTag = function(width, height, getPixel, alt) {
+
+ var gif = gifImage(width, height);
+ for (var y = 0; y < height; y += 1) {
+ for (var x = 0; x < width; x += 1) {
+ gif.setPixel(x, y, getPixel(x, y) );
+ }
+ }
+
+ var b = byteArrayOutputStream();
+ gif.write(b);
+
+ var base64 = base64EncodeOutputStream();
+ var bytes = b.toByteArray();
+ for (var i = 0; i < bytes.length; i += 1) {
+ base64.writeByte(bytes[i]);
+ }
+ base64.flush();
+
+ var img = '';
+ img += 'data:image/gif;base64,';
+ img += base64;
+
+ return img;
+};
+
+//---------------------------------------------------------------------
+// returns qrcode function.
+
+var drawImg = function(text, options) {
+ options = options || {};
+ var typeNumber = options.typeNumber || 4;
+ var errorCorrectLevel = options.errorCorrectLevel || 'M';
+ var size = options.size || 500;
+
+ var qr;
+
+ try {
+ qr = qrcode(typeNumber, errorCorrectLevel || 'M');
+ qr.addData(text);
+ qr.make();
+ } catch (e) {
+ if(typeNumber >= 40) {
+ throw new Error('Text too long to encode');
+ } else {
+ return drawImg(text, {
+ size: size,
+ errorCorrectLevel: errorCorrectLevel,
+ typeNumber: typeNumber + 1
+ });
+ }
+ }
+
+ // calc cellsize and margin
+ var cellsize = parseInt(size / qr.getModuleCount());
+ var margin = parseInt((size - qr.getModuleCount() * cellsize) / 2);
+
+ return qr.createImgTag(cellsize, margin, size);
+};
+module.exports = {
+ drawImg: drawImg
+};
\ No newline at end of file