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1077 lines
26 KiB
JavaScript
1077 lines
26 KiB
JavaScript
//---------------------------------------------------------------------
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//
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// QR Code Generator for JavaScript
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//
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// Copyright (c) 2009 Kazuhiko Arase
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//
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// URL: http://www.d-project.com/
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//
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// Licensed under the MIT license:
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// http://www.opensource.org/licenses/mit-license.php
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//
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// The word 'QR Code' is registered trademark of
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// DENSO WAVE INCORPORATED
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// http://www.denso-wave.com/qrcode/faqpatent-e.html
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//
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//---------------------------------------------------------------------
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var qrcode = (function() {
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//---------------------------------------------------------------------
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// qrcode
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//---------------------------------------------------------------------
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/**
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* qrcode
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* @param typeNumber 1 to 40
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* @param errorCorrectionLevel 'L','M','Q','H'
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*/
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var qrcode = function(typeNumber, errorCorrectionLevel) {
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var PAD0 = 0xec;
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var PAD1 = 0x11;
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var _typeNumber = typeNumber;
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var _errorCorrectionLevel = QRErrorCorrectionLevel[errorCorrectionLevel];
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var _modules = null;
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var _moduleCount = 0;
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var _dataCache = null;
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var _dataList = [];
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var _this = {};
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var makeImpl = function(test, maskPattern) {
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_moduleCount = _typeNumber * 4 + 17;
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_modules = (function(moduleCount) {
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var modules = new Array(moduleCount);
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for (var row = 0; row < moduleCount; row += 1) {
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modules[row] = new Array(moduleCount);
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for (var col = 0; col < moduleCount; col += 1) {
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modules[row][col] = null;
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}
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}
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return modules;
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})(_moduleCount);
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setupPositionProbePattern(0, 0);
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setupPositionProbePattern(_moduleCount - 7, 0);
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setupPositionProbePattern(0, _moduleCount - 7);
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setupPositionAdjustPattern();
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setupTimingPattern();
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setupTypeInfo(test, maskPattern);
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if (_typeNumber >= 7) {
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// setupTypeNumber(test);
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}
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if (_dataCache == null) {
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_dataCache = createData(_typeNumber, _errorCorrectionLevel, _dataList);
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}
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mapData(_dataCache, maskPattern);
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};
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var setupPositionProbePattern = function(row, col) {
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for (var r = -1; r <= 7; r += 1) {
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if (row + r <= -1 || _moduleCount <= row + r) continue;
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for (var c = -1; c <= 7; c += 1) {
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if (col + c <= -1 || _moduleCount <= col + c) continue;
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if (
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(0 <= r && r <= 6 && (c == 0 || c == 6)) ||
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(0 <= c && c <= 6 && (r == 0 || r == 6)) ||
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(2 <= r && r <= 4 && 2 <= c && c <= 4)
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) {
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_modules[row + r][col + c] = true;
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} else {
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_modules[row + r][col + c] = false;
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}
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}
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}
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};
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var getBestMaskPattern = function() {
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var minLostPoint = 0;
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var pattern = 0;
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for (var i = 0; i < 8; i += 1) {
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makeImpl(true, i);
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var lostPoint = QRUtil.getLostPoint(_this);
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if (i == 0 || minLostPoint > lostPoint) {
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minLostPoint = lostPoint;
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pattern = i;
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}
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}
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return pattern;
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};
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var setupTimingPattern = function() {
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for (var r = 8; r < _moduleCount - 8; r += 1) {
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if (_modules[r][6] != null) {
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continue;
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}
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_modules[r][6] = r % 2 == 0;
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}
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for (var c = 8; c < _moduleCount - 8; c += 1) {
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if (_modules[6][c] != null) {
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continue;
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}
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_modules[6][c] = c % 2 == 0;
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}
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};
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var setupPositionAdjustPattern = function() {
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var pos = QRUtil.getPatternPosition(_typeNumber);
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for (var i = 0; i < pos.length; i += 1) {
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for (var j = 0; j < pos.length; j += 1) {
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var row = pos[i];
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var col = pos[j];
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if (_modules[row][col] != null) {
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continue;
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}
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for (var r = -2; r <= 2; r += 1) {
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for (var c = -2; c <= 2; c += 1) {
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if (
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r == -2 ||
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r == 2 ||
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c == -2 ||
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c == 2 ||
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(r == 0 && c == 0)
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) {
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_modules[row + r][col + c] = true;
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} else {
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_modules[row + r][col + c] = false;
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}
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}
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}
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}
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}
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};
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var setupTypeInfo = function(test, maskPattern) {
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var data = (_errorCorrectionLevel << 3) | maskPattern;
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var bits = QRUtil.getBCHTypeInfo(data);
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// vertical
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for (var i = 0; i < 15; i += 1) {
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var mod = !test && ((bits >> i) & 1) == 1;
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if (i < 6) {
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_modules[i][8] = mod;
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} else if (i < 8) {
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_modules[i + 1][8] = mod;
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} else {
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_modules[_moduleCount - 15 + i][8] = mod;
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}
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}
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// horizontal
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for (var i = 0; i < 15; i += 1) {
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var mod = !test && ((bits >> i) & 1) == 1;
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if (i < 8) {
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_modules[8][_moduleCount - i - 1] = mod;
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} else if (i < 9) {
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_modules[8][15 - i - 1 + 1] = mod;
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} else {
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_modules[8][15 - i - 1] = mod;
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}
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}
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// fixed module
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_modules[_moduleCount - 8][8] = !test;
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};
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var mapData = function(data, maskPattern) {
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var inc = -1;
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var row = _moduleCount - 1;
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var bitIndex = 7;
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var byteIndex = 0;
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var maskFunc = QRUtil.getMaskFunction(maskPattern);
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for (var col = _moduleCount - 1; col > 0; col -= 2) {
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if (col == 6) col -= 1;
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while (true) {
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for (var c = 0; c < 2; c += 1) {
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if (_modules[row][col - c] == null) {
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var dark = false;
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if (byteIndex < data.length) {
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dark = ((data[byteIndex] >>> bitIndex) & 1) == 1;
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}
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var mask = maskFunc(row, col - c);
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if (mask) {
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dark = !dark;
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}
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_modules[row][col - c] = dark;
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bitIndex -= 1;
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if (bitIndex == -1) {
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byteIndex += 1;
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bitIndex = 7;
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}
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}
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}
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row += inc;
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if (row < 0 || _moduleCount <= row) {
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row -= inc;
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inc = -inc;
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break;
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}
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}
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}
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};
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var createBytes = function(buffer, rsBlocks) {
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var offset = 0;
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var maxDcCount = 0;
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var maxEcCount = 0;
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var dcdata = new Array(rsBlocks.length);
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var ecdata = new Array(rsBlocks.length);
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for (var r = 0; r < rsBlocks.length; r += 1) {
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var dcCount = rsBlocks[r].dataCount;
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var ecCount = rsBlocks[r].totalCount - dcCount;
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maxDcCount = Math.max(maxDcCount, dcCount);
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maxEcCount = Math.max(maxEcCount, ecCount);
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dcdata[r] = new Array(dcCount);
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for (var i = 0; i < dcdata[r].length; i += 1) {
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dcdata[r][i] = 0xff & buffer.getBuffer()[i + offset];
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}
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offset += dcCount;
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var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
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var rawPoly = qrPolynomial(dcdata[r], rsPoly.getLength() - 1);
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var modPoly = rawPoly.mod(rsPoly);
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ecdata[r] = new Array(rsPoly.getLength() - 1);
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for (var i = 0; i < ecdata[r].length; i += 1) {
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var modIndex = i + modPoly.getLength() - ecdata[r].length;
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ecdata[r][i] = modIndex >= 0 ? modPoly.getAt(modIndex) : 0;
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}
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}
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var totalCodeCount = 0;
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for (var i = 0; i < rsBlocks.length; i += 1) {
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totalCodeCount += rsBlocks[i].totalCount;
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}
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var data = new Array(totalCodeCount);
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var index = 0;
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for (var i = 0; i < maxDcCount; i += 1) {
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for (var r = 0; r < rsBlocks.length; r += 1) {
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if (i < dcdata[r].length) {
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data[index] = dcdata[r][i];
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index += 1;
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}
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}
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}
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for (var i = 0; i < maxEcCount; i += 1) {
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for (var r = 0; r < rsBlocks.length; r += 1) {
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if (i < ecdata[r].length) {
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data[index] = ecdata[r][i];
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index += 1;
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}
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}
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}
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return data;
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};
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var createData = function(typeNumber, errorCorrectionLevel, dataList) {
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var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectionLevel);
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var buffer = qrBitBuffer();
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for (var i = 0; i < dataList.length; i += 1) {
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var data = dataList[i];
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buffer.put(data.getMode(), 4);
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buffer.put(
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data.getLength(),
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QRUtil.getLengthInBits(data.getMode(), typeNumber)
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);
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data.write(buffer);
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}
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// calc num max data.
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var totalDataCount = 0;
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for (var i = 0; i < rsBlocks.length; i += 1) {
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totalDataCount += rsBlocks[i].dataCount;
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}
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if (buffer.getLengthInBits() > totalDataCount * 8) {
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throw 'code length overflow. (' +
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buffer.getLengthInBits() +
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'>' +
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totalDataCount * 8 +
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')';
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}
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// end code
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if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
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buffer.put(0, 4);
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}
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// padding
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while (buffer.getLengthInBits() % 8 != 0) {
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buffer.putBit(false);
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}
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// padding
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while (true) {
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if (buffer.getLengthInBits() >= totalDataCount * 8) {
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break;
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}
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buffer.put(PAD0, 8);
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if (buffer.getLengthInBits() >= totalDataCount * 8) {
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break;
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}
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buffer.put(PAD1, 8);
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}
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return createBytes(buffer, rsBlocks);
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};
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_this.addData = function(data) {
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var newData = qr8BitByte(data);
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_dataList.push(newData);
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_dataCache = null;
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};
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_this.isDark = function(row, col) {
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if (row < 0 || _moduleCount <= row || col < 0 || _moduleCount <= col) {
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throw row + ',' + col;
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}
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return _modules[row][col];
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};
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_this.getModuleCount = function() {
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return _moduleCount;
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};
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_this.make = function() {
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makeImpl(false, getBestMaskPattern());
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};
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_this.createSvgTag = function(cellSize, margin, alt, title) {
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var opts = {};
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if (typeof arguments[0] == 'object') {
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// Called by options.
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opts = arguments[0];
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// overwrite cellSize and margin.
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cellSize = opts.cellSize;
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margin = opts.margin;
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alt = opts.alt;
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title = opts.title;
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}
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cellSize = cellSize || 2;
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margin = typeof margin == 'undefined' ? cellSize * 4 : margin;
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// Compose alt property surrogate
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alt = typeof alt === 'string' ? { text: alt } : alt || {};
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alt.text = alt.text || null;
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alt.id = alt.text ? alt.id || 'qrcode-description' : null;
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// Compose title property surrogate
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title = typeof title === 'string' ? { text: title } : title || {};
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title.text = title.text || null;
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title.id = title.text ? title.id || 'qrcode-title' : null;
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var size = _this.getModuleCount() * cellSize + margin * 2;
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var c,
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mc,
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r,
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mr,
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qrSvg = '',
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rect;
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rect =
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'l' +
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cellSize +
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',0 0,' +
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cellSize +
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' -' +
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cellSize +
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',0 0,-' +
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cellSize +
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'z ';
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qrSvg += '<svg version="1.1" xmlns="http://www.w3.org/2000/svg"';
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qrSvg += !opts.scalable
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? ' width="' + size + 'px" height="' + size + 'px"'
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: '';
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qrSvg += ' viewBox="0 0 ' + size + ' ' + size + '" ';
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qrSvg += ' preserveAspectRatio="xMinYMin meet"';
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qrSvg +=
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title.text || alt.text
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? ' role="img" aria-labelledby="' +
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escapeXml([title.id, alt.id].join(' ').trim()) +
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'"'
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: '';
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qrSvg += '>';
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qrSvg += title.text
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? '<title id="' +
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escapeXml(title.id) +
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'">' +
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escapeXml(title.text) +
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'</title>'
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: '';
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qrSvg += alt.text
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? '<description id="' +
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escapeXml(alt.id) +
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'">' +
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escapeXml(alt.text) +
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'</description>'
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: '';
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qrSvg += '<rect width="100%" height="100%" fill="white" cx="0" cy="0"/>';
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qrSvg += '<path d="';
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for (r = 0; r < _this.getModuleCount(); r += 1) {
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mr = r * cellSize + margin;
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for (c = 0; c < _this.getModuleCount(); c += 1) {
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if (_this.isDark(r, c)) {
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mc = c * cellSize + margin;
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qrSvg += 'M' + mc + ',' + mr + rect;
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}
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}
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}
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qrSvg += '" stroke="transparent" fill="black"/>';
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qrSvg += '</svg>';
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return qrSvg;
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};
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var escapeXml = function(s) {
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var escaped = '';
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for (var i = 0; i < s.length; i += 1) {
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var c = s.charAt(i);
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switch (c) {
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case '<':
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escaped += '<';
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break;
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case '>':
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escaped += '>';
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break;
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case '&':
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escaped += '&';
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break;
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case '"':
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escaped += '"';
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break;
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default:
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escaped += c;
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break;
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}
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}
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return escaped;
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};
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return _this;
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};
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//---------------------------------------------------------------------
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// qrcode.stringToBytes
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//---------------------------------------------------------------------
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qrcode.stringToBytesFuncs = {
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default: function(s) {
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var bytes = [];
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for (var i = 0; i < s.length; i += 1) {
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var c = s.charCodeAt(i);
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bytes.push(c & 0xff);
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}
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return bytes;
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}
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};
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qrcode.stringToBytes = qrcode.stringToBytesFuncs['default'];
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//---------------------------------------------------------------------
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// QRMode
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//---------------------------------------------------------------------
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var QRMode = {
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MODE_NUMBER: 1 << 0,
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MODE_ALPHA_NUM: 1 << 1,
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MODE_8BIT_BYTE: 1 << 2,
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MODE_KANJI: 1 << 3
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};
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//---------------------------------------------------------------------
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// QRErrorCorrectionLevel
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//---------------------------------------------------------------------
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var QRErrorCorrectionLevel = {
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L: 1,
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M: 0,
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Q: 3,
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H: 2
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};
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//---------------------------------------------------------------------
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// QRMaskPattern
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//---------------------------------------------------------------------
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var QRMaskPattern = {
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PATTERN000: 0,
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PATTERN001: 1,
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PATTERN010: 2,
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PATTERN011: 3,
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PATTERN100: 4,
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PATTERN101: 5,
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PATTERN110: 6,
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PATTERN111: 7
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};
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//---------------------------------------------------------------------
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// QRUtil
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//---------------------------------------------------------------------
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|
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var QRUtil = (function() {
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var PATTERN_POSITION_TABLE = [
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[],
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[6, 18],
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[6, 22],
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[6, 26],
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[6, 30],
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[6, 34],
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[6, 22, 38],
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[6, 24, 42],
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[6, 26, 46]
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];
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var G15 =
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(1 << 10) |
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(1 << 8) |
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(1 << 5) |
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(1 << 4) |
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(1 << 2) |
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(1 << 1) |
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(1 << 0);
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var G18 =
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(1 << 12) |
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(1 << 11) |
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(1 << 10) |
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(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 '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 'mode:' + mode;
|
|
}
|
|
} else {
|
|
throw '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 '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 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
|
|
|
|
// 1
|
|
[1, 26, 19],
|
|
|
|
// 2
|
|
[1, 44, 34],
|
|
|
|
// 3
|
|
[1, 70, 55],
|
|
|
|
// 4
|
|
[1, 100, 80],
|
|
|
|
// 5
|
|
[1, 134, 108],
|
|
|
|
// 6
|
|
[2, 86, 68],
|
|
|
|
// 7
|
|
[2, 98, 78],
|
|
|
|
// 8
|
|
[2, 121, 97]
|
|
];
|
|
|
|
var qrRSBlock = function(totalCount, dataCount) {
|
|
var _this = {};
|
|
_this.totalCount = totalCount;
|
|
_this.dataCount = dataCount;
|
|
return _this;
|
|
};
|
|
|
|
var _this = {};
|
|
|
|
var getRsBlockTable = function(typeNumber, errorCorrectionLevel) {
|
|
switch (errorCorrectionLevel) {
|
|
case QRErrorCorrectionLevel.L:
|
|
return RS_BLOCK_TABLE[typeNumber - 1];
|
|
default:
|
|
return undefined;
|
|
}
|
|
};
|
|
|
|
_this.getRSBlocks = function(typeNumber, errorCorrectionLevel) {
|
|
var rsBlock = getRsBlockTable(typeNumber, errorCorrectionLevel);
|
|
|
|
if (typeof rsBlock == 'undefined') {
|
|
throw 'bad rs block @ typeNumber:' +
|
|
typeNumber +
|
|
'/errorCorrectionLevel:' +
|
|
errorCorrectionLevel;
|
|
}
|
|
|
|
var length = rsBlock.length / 3;
|
|
|
|
var list = [];
|
|
|
|
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 = [];
|
|
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;
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// 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;
|
|
});
|