/var/lang/lib/node_modules/npm/node_modules/qrcode-terminal/vendor/QRCode
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
//---------------------------------------------------------------------// QRCode 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////---------------------------------------------------------------------// Modified to work in node for this project (and some refactoring)//--------------------------------------------------------------------- var QR8bitByte = require('./QR8bitByte');var QRUtil = require('./QRUtil');var QRPolynomial = require('./QRPolynomial');var QRRSBlock = require('./QRRSBlock');var QRBitBuffer = require('./QRBitBuffer'); function QRCode(typeNumber, errorCorrectLevel) { this.typeNumber = typeNumber; this.errorCorrectLevel = errorCorrectLevel; this.modules = null; this.moduleCount = 0; this.dataCache = null; this.dataList = [];} QRCode.prototype = { addData : function(data) { var newData = new QR8bitByte(data); this.dataList.push(newData); this.dataCache = null; }, isDark : function(row, col) { if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) { throw new Error(row + "," + col); } return this.modules[row][col]; }, getModuleCount : function() { return this.moduleCount; }, make : function() { // Calculate automatically typeNumber if provided is < 1 if (this.typeNumber < 1 ){ var typeNumber = 1; for (typeNumber = 1; typeNumber < 40; typeNumber++) { var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, this.errorCorrectLevel); var buffer = new QRBitBuffer(); var totalDataCount = 0; for (var i = 0; i < rsBlocks.length; i++) { totalDataCount += rsBlocks[i].dataCount; } for (var x = 0; x < this.dataList.length; x++) { var data = this.dataList[x]; buffer.put(data.mode, 4); buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) ); data.write(buffer); } if (buffer.getLengthInBits() <= totalDataCount * 8) break; } this.typeNumber = typeNumber; } this.makeImpl(false, this.getBestMaskPattern() ); }, makeImpl : function(test, maskPattern) { this.moduleCount = this.typeNumber * 4 + 17; this.modules = new Array(this.moduleCount); for (var row = 0; row < this.moduleCount; row++) { this.modules[row] = new Array(this.moduleCount); for (var col = 0; col < this.moduleCount; col++) { this.modules[row][col] = null;//(col + row) % 3; } } this.setupPositionProbePattern(0, 0); this.setupPositionProbePattern(this.moduleCount - 7, 0); this.setupPositionProbePattern(0, this.moduleCount - 7); this.setupPositionAdjustPattern(); this.setupTimingPattern(); this.setupTypeInfo(test, maskPattern); if (this.typeNumber >= 7) { this.setupTypeNumber(test); } if (this.dataCache === null) { this.dataCache = QRCode.createData(this.typeNumber, this.errorCorrectLevel, this.dataList); } this.mapData(this.dataCache, maskPattern); }, setupPositionProbePattern : function(row, col) { for (var r = -1; r <= 7; r++) { if (row + r <= -1 || this.moduleCount <= row + r) continue; for (var c = -1; c <= 7; c++) { if (col + c <= -1 || this.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) ) { this.modules[row + r][col + c] = true; } else { this.modules[row + r][col + c] = false; } } } }, getBestMaskPattern : function() { var minLostPoint = 0; var pattern = 0; for (var i = 0; i < 8; i++) { this.makeImpl(true, i); var lostPoint = QRUtil.getLostPoint(this); if (i === 0 || minLostPoint > lostPoint) { minLostPoint = lostPoint; pattern = i; } } return pattern; }, createMovieClip : function(target_mc, instance_name, depth) { var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth); var cs = 1; this.make(); for (var row = 0; row < this.modules.length; row++) { var y = row * cs; for (var col = 0; col < this.modules[row].length; col++) { var x = col * cs; var dark = this.modules[row][col]; if (dark) { qr_mc.beginFill(0, 100); qr_mc.moveTo(x, y); qr_mc.lineTo(x + cs, y); qr_mc.lineTo(x + cs, y + cs); qr_mc.lineTo(x, y + cs); qr_mc.endFill(); } } } return qr_mc; }, setupTimingPattern : function() { for (var r = 8; r < this.moduleCount - 8; r++) { if (this.modules[r][6] !== null) { continue; } this.modules[r][6] = (r % 2 === 0); } for (var c = 8; c < this.moduleCount - 8; c++) { if (this.modules[6][c] !== null) { continue; } this.modules[6][c] = (c % 2 === 0); } }, setupPositionAdjustPattern : function() { var pos = QRUtil.getPatternPosition(this.typeNumber); for (var i = 0; i < pos.length; i++) { for (var j = 0; j < pos.length; j++) { var row = pos[i]; var col = pos[j]; if (this.modules[row][col] !== null) { continue; } for (var r = -2; r <= 2; r++) { for (var c = -2; c <= 2; c++) { if (Math.abs(r) === 2 || Math.abs(c) === 2 || (r === 0 && c === 0) ) { this.modules[row + r][col + c] = true; } else { this.modules[row + r][col + c] = false; } } } } } }, setupTypeNumber : function(test) { var bits = QRUtil.getBCHTypeNumber(this.typeNumber); var mod; for (var i = 0; i < 18; i++) { mod = (!test && ( (bits >> i) & 1) === 1); this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod; } for (var x = 0; x < 18; x++) { mod = (!test && ( (bits >> x) & 1) === 1); this.modules[x % 3 + this.moduleCount - 8 - 3][Math.floor(x / 3)] = mod; } }, setupTypeInfo : function(test, maskPattern) { var data = (this.errorCorrectLevel << 3) | maskPattern; var bits = QRUtil.getBCHTypeInfo(data); var mod; // vertical for (var v = 0; v < 15; v++) { mod = (!test && ( (bits >> v) & 1) === 1); if (v < 6) { this.modules[v][8] = mod; } else if (v < 8) { this.modules[v + 1][8] = mod; } else { this.modules[this.moduleCount - 15 + v][8] = mod; } } // horizontal for (var h = 0; h < 15; h++) { mod = (!test && ( (bits >> h) & 1) === 1); if (h < 8) { this.modules[8][this.moduleCount - h - 1] = mod; } else if (h < 9) { this.modules[8][15 - h - 1 + 1] = mod; } else { this.modules[8][15 - h - 1] = mod; } } // fixed module this.modules[this.moduleCount - 8][8] = (!test); }, mapData : function(data, maskPattern) { var inc = -1; var row = this.moduleCount - 1; var bitIndex = 7; var byteIndex = 0; for (var col = this.moduleCount - 1; col > 0; col -= 2) { if (col === 6) col--; while (true) { for (var c = 0; c < 2; c++) { if (this.modules[row][col - c] === null) { var dark = false; if (byteIndex < data.length) { dark = ( ( (data[byteIndex] >>> bitIndex) & 1) === 1); } var mask = QRUtil.getMask(maskPattern, row, col - c); if (mask) { dark = !dark; } this.modules[row][col - c] = dark; bitIndex--; if (bitIndex === -1) { byteIndex++; bitIndex = 7; } } } row += inc; if (row < 0 || this.moduleCount <= row) { row -= inc; inc = -inc; break; } } } } }; QRCode.PAD0 = 0xEC;QRCode.PAD1 = 0x11; QRCode.createData = function(typeNumber, errorCorrectLevel, dataList) { var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel); var buffer = new QRBitBuffer(); for (var i = 0; i < dataList.length; i++) { var data = dataList[i]; buffer.put(data.mode, 4); buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) ); data.write(buffer); } // calc num max data. var totalDataCount = 0; for (var x = 0; x < rsBlocks.length; x++) { totalDataCount += rsBlocks[x].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(QRCode.PAD0, 8); if (buffer.getLengthInBits() >= totalDataCount * 8) { break; } buffer.put(QRCode.PAD1, 8); } return QRCode.createBytes(buffer, rsBlocks);}; QRCode.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++) { 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++) { dcdata[r][i] = 0xff & buffer.buffer[i + offset]; } offset += dcCount; var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount); var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1); var modPoly = rawPoly.mod(rsPoly); ecdata[r] = new Array(rsPoly.getLength() - 1); for (var x = 0; x < ecdata[r].length; x++) { var modIndex = x + modPoly.getLength() - ecdata[r].length; ecdata[r][x] = (modIndex >= 0)? modPoly.get(modIndex) : 0; } } var totalCodeCount = 0; for (var y = 0; y < rsBlocks.length; y++) { totalCodeCount += rsBlocks[y].totalCount; } var data = new Array(totalCodeCount); var index = 0; for (var z = 0; z < maxDcCount; z++) { for (var s = 0; s < rsBlocks.length; s++) { if (z < dcdata[s].length) { data[index++] = dcdata[s][z]; } } } for (var xx = 0; xx < maxEcCount; xx++) { for (var t = 0; t < rsBlocks.length; t++) { if (xx < ecdata[t].length) { data[index++] = ecdata[t][xx]; } } } return data; }; module.exports = QRCode;