qrcode-generator

//--------------------------------------------------------------------- // // QR Code Generator for JavaScript // // Copyright (c) 2009 Kazuhiko Arase // // URL: http://www.d-project.com/ // // Licensed under the MIT license: // http://www.opensource.org/licenses/mit-license.php // // The word 'QR Code' is registered trademark of // DENSO WAVE INCORPORATED // http://www.denso-wave.com/qrcode/faqpatent-e.html // //--------------------------------------------------------------------- import { type QRCode, type QRCodeFactory, type QRPolynominal, type QRRSBlock, type QRData, type QRSvgTagOpts, type QRBitBuffer } from './types'; //--------------------------------------------------------------------- // qrcode //--------------------------------------------------------------------- /** * qrcode * @param typeNumber 1 to 40 * @param errorCorrectionLevel 'L','M','Q','H' */ const qrcode : QRCodeFactory = function(typeNumber : number, errorCorrectionLevel : string) : QRCode { const PAD0 = 0xEC; const PAD1 = 0x11; let _typeNumber = typeNumber; const _errorCorrectionLevel = QRErrorCorrectionLevel[errorCorrectionLevel]; let _modules : (null | boolean[][]) = null; let _moduleCount = 0; let _dataCache : (null | number[]) = null; const _dataList : QRData[] = []; const makeImpl = function(test : boolean, maskPattern : number) { _moduleCount = _typeNumber * 4 + 17; _modules = function(moduleCount) { const modules = new Array(moduleCount); for (let row = 0; row < moduleCount; row += 1) { modules[row] = new Array(moduleCount); for (let 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, _errorCorrectionLevel, _dataList); } mapData(_dataCache, maskPattern); }; const setupPositionProbePattern = function(row : number, col : number) { for (let r = -1; r <= 7; r += 1) { if (row + r <= -1 || _moduleCount <= row + r) continue; for (let 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; } } } }; const getBestMaskPattern = function() { let minLostPoint = 0; let pattern = 0; for (let i = 0; i < 8; i += 1) { makeImpl(true, i); const lostPoint = QRUtil.getLostPoint(_this); if (i == 0 || minLostPoint > lostPoint) { minLostPoint = lostPoint; pattern = i; } } return pattern; }; const setupTimingPattern = function() { for (let r = 8; r < _moduleCount - 8; r += 1) { if (_modules![r][6] != null) { continue; } _modules![r][6] = (r % 2 == 0); } for (let c = 8; c < _moduleCount - 8; c += 1) { if (_modules![6][c] != null) { continue; } _modules![6][c] = (c % 2 == 0); } }; const setupPositionAdjustPattern = function() { const pos = QRUtil.getPatternPosition(_typeNumber); for (let i = 0; i < pos.length; i += 1) { for (let j = 0; j < pos.length; j += 1) { const row = pos[i]; const col = pos[j]; if (_modules![row][col] != null) { continue; } for (let r = -2; r <= 2; r += 1) { for (let 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; } } } } } }; const setupTypeNumber = function(test : boolean) { const bits = QRUtil.getBCHTypeNumber(_typeNumber); for (let i = 0; i < 18; i += 1) { const mod = (!test && ( (bits >> i) & 1) == 1); _modules![Math.floor(i / 3)][i % 3 + _moduleCount - 8 - 3] = mod; } for (let i = 0; i < 18; i += 1) { const mod = (!test && ( (bits >> i) & 1) == 1); _modules![i % 3 + _moduleCount - 8 - 3][Math.floor(i / 3)] = mod; } }; const setupTypeInfo = function(test : boolean, maskPattern : number) { const data = (_errorCorrectionLevel << 3) | maskPattern; const bits = QRUtil.getBCHTypeInfo(data); // vertical for (let i = 0; i < 15; i += 1) { const 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 (let i = 0; i < 15; i += 1) { const 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); }; const mapData = function(data : number[], maskPattern : number) { let inc = -1; let row = _moduleCount - 1; let bitIndex = 7; let byteIndex = 0; const maskFunc = QRUtil.getMaskFunction(maskPattern); for (let col = _moduleCount - 1; col > 0; col -= 2) { if (col == 6) col -= 1; while (true) { for (let c = 0; c < 2; c += 1) { if (_modules![row][col - c] == null) { let dark = false; if (byteIndex < data.length) { dark = ( ( (data[byteIndex] >>> bitIndex) & 1) == 1); } const 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; } } } }; const createBytes = function(buffer : QRBitBuffer, rsBlocks : QRRSBlock[]) { let offset = 0; let maxDcCount = 0; let maxEcCount = 0; const dcdata = new Array(rsBlocks.length); const ecdata = new Array(rsBlocks.length); for (let r = 0; r < rsBlocks.length; r += 1) { const dcCount = rsBlocks[r].dataCount; const ecCount = rsBlocks[r].totalCount - dcCount; maxDcCount = Math.max(maxDcCount, dcCount); maxEcCount = Math.max(maxEcCount, ecCount); dcdata[r] = new Array(dcCount); for (let i = 0; i < dcdata[r].length; i += 1) { dcdata[r][i] = 0xff & buffer.getBuffer()[i + offset]; } offset += dcCount; const rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount); const rawPoly = qrPolynomial(dcdata[r], rsPoly.getLength() - 1); const modPoly = rawPoly.mod(rsPoly); ecdata[r] = new Array(rsPoly.getLength() - 1); for (let i = 0; i < ecdata[r].length; i += 1) { const modIndex = i + modPoly.getLength() - ecdata[r].length; ecdata[r][i] = (modIndex >= 0)? modPoly.getAt(modIndex) : 0; } } let totalCodeCount = 0; for (let i = 0; i < rsBlocks.length; i += 1) { totalCodeCount += rsBlocks[i].totalCount; } const data = new Array(totalCodeCount); let index = 0; for (let i = 0; i < maxDcCount; i += 1) { for (let r = 0; r < rsBlocks.length; r += 1) { if (i < dcdata[r].length) { data[index] = dcdata[r][i]; index += 1; } } } for (let i = 0; i < maxEcCount; i += 1) { for (let r = 0; r < rsBlocks.length; r += 1) { if (i < ecdata[r].length) { data[index] = ecdata[r][i]; index += 1; } } } return data; }; const createData = function(typeNumber : number, errorCorrectionLevel : number, dataList : QRData[]) { const rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectionLevel); const buffer = qrBitBuffer(); for (let i = 0; i < dataList.length; i += 1) { const data = dataList[i]; buffer.put(data.getMode(), 4); buffer.put(data.getLength(), QRUtil.getLengthInBits(data.getMode(), typeNumber) ); data.write(buffer); } // calc num max data. let totalDataCount = 0; for (let i = 0; i < rsBlocks.length; i += 1) { totalDataCount += rsBlocks[i].dataCount; } if (buffer.getLengthInBits() > totalDataCount * 8) { throw '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); }; const addData = function(data : string, mode : string) { mode = mode || 'Byte'; let newData : QRData | null = null; switch(mode) { case 'Numeric' : newData = qrNumber(data); break; case 'Alphanumeric' : newData = qrAlphaNum(data); break; case 'Byte' : newData = qr8BitByte(data); break; case 'Kanji' : newData = qrKanji(data); break; default : throw 'mode:' + mode; } _dataList.push(newData); _dataCache = null; }; const isDark = function(row : number, col : number) { if (row < 0 || _moduleCount <= row || col < 0 || _moduleCount <= col) { throw row + ',' + col; } return _modules![row][col]; }; const getModuleCount = function() { return _moduleCount; }; const make = function() { if (_typeNumber < 1) { let typeNumber = 1; for (; typeNumber < 40; typeNumber++) { const rsBlocks = QRRSBlock.getRSBlocks(typeNumber, _errorCorrectionLevel); const buffer = qrBitBuffer(); for (let i = 0; i < _dataList.length; i++) { const data = _dataList[i]; buffer.put(data.getMode(), 4); buffer.put(data.getLength(), QRUtil.getLengthInBits(data.getMode(), typeNumber) ); data.write(buffer); } let totalDataCount = 0; for (let i = 0; i < rsBlocks.length; i++) { totalDataCount += rsBlocks[i].dataCount; } if (buffer.getLengthInBits() <= totalDataCount * 8) { break; } } _typeNumber = typeNumber; } makeImpl(false, getBestMaskPattern() ); }; const createTableTag = function(cellSize? : number, margin? : number) { cellSize = cellSize || 2; margin = (typeof margin == 'undefined')? cellSize * 4 : margin; let 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 (let r = 0; r < _this.getModuleCount(); r += 1) { qrHtml += '<tr>'; for (let 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; }; const createSvgTag = function(cellSize_or_opts? : number | QRSvgTagOpts, margin? : number, alt? : any, title? : any) { let cellSize : number | undefined = 0; let opts : QRSvgTagOpts = {}; if (typeof cellSize_or_opts == 'object') { // Called by options. opts = cellSize_or_opts; // overwrite cellSize and margin. cellSize = opts.cellSize; margin = opts.margin; alt = opts.alt; title = opts.title; } cellSize = cellSize || 2; margin = (typeof margin == 'undefined')? cellSize * 4 : margin; // Compose alt property surrogate alt = (typeof alt === 'string') ? {text: alt} : alt || {}; alt.text = alt.text || null; alt.id = (alt.text) ? alt.id || 'qrcode-description' : null; // Compose title property surrogate title = (typeof title === 'string') ? {text: title} : title || {}; title.text = title.text || null; title.id = (title.text) ? title.id || 'qrcode-title' : null; const size = _this.getModuleCount() * cellSize + margin * 2; let c : number, mc : number, r : number, mr : number, qrSvg='', rect : string; rect = 'l' + cellSize + ',0 0,' + cellSize + ' -' + cellSize + ',0 0,-' + cellSize + 'z '; qrSvg += '<svg version="1.1" xmlns="http://www.w3.org/2000/svg"'; qrSvg += !opts.scalable ? ' width="' + size + 'px" height="' + size + 'px"' : ''; qrSvg += ' viewBox="0 0 ' + size + ' ' + size + '" '; qrSvg += ' preserveAspectRatio="xMinYMin meet"'; qrSvg += (title.text || alt.text) ? ' role="img" aria-labelledby="' + escapeXml([title.id, alt.id].join(' ').trim() ) + '"' : ''; qrSvg += '>'; qrSvg += (title.text) ? '<title id="' + escapeXml(title.id) + '">' + escapeXml(title.text) + '</title>' : ''; qrSvg += (alt.text) ? '<description id="' + escapeXml(alt.id) + '">' + escapeXml(alt.text) + '</description>' : ''; qrSvg += '<rect width="100%" height="100%" fill="white" cx="0" cy="0"/>'; qrSvg += '<path d="'; for (r = 0; r < _this.getModuleCount(); r += 1) { mr = r * cellSize + margin; for (c = 0; c < _this.getModuleCount(); c += 1) { if (_this.isDark(r, c) ) { mc = c*cellSize+margin; qrSvg += 'M' + mc + ',' + mr + rect; } } } qrSvg += '" stroke="transparent" fill="black"/>'; qrSvg += '</svg>'; return qrSvg; }; const createDataURL = function(cellSize? : number, margin? : number) { cellSize = cellSize || 2; margin = (typeof margin == 'undefined')? cellSize * 4 : margin; const size = _this.getModuleCount() * cellSize + margin * 2; const min = margin; const max = size - margin; return _createDataURL(size, size, function(x, y) { if (min <= x && x < max && min <= y && y < max) { const c = Math.floor( (x - min) / cellSize); const r = Math.floor( (y - min) / cellSize); return _this.isDark(r, c)? 0 : 1; } else { return 1; } } ); }; const createImgTag = function(cellSize? : number, margin? : number, alt? : string) { cellSize = cellSize || 2; margin = (typeof margin == 'undefined')? cellSize * 4 : margin; const size = _this.getModuleCount() * cellSize + margin * 2; let img = ''; img += '<img'; img += '\u0020src="'; img += _this.createDataURL(cellSize, margin); img += '"'; img += '\u0020width="'; img += size; img += '"'; img += '\u0020height="'; img += size; img += '"'; if (alt) { img += '\u0020alt="'; img += escapeXml(alt); img += '"'; } img += '/>'; return img; }; const escapeXml = function(s : string) { let escaped = ''; for (let i = 0; i < s.length; i += 1) { const c = s.charAt(i); switch(c) { case '<': escaped += '<'; break; case '>': escaped += '>'; break; case '&': escaped += '&'; break; case '"': escaped += '"'; break; default : escaped += c; break; } } return escaped; }; const _createHalfASCII = function(margin? : number) { const cellSize = 1; margin = (typeof margin == 'undefined')? cellSize * 2 : margin; const size = _this.getModuleCount() * cellSize + margin * 2; const min = margin; const max = size - margin; let y : number, x : number, r1 : number, r2 : number, p : string; const blocks : { [k : string] : string } = { '██': '█', '█ ': '▀', ' █': '▄', ' ': ' ' }; const blocksLastLineNoMargin : { [k : string] : string } = { '██': '▀', '█ ': '▀', ' █': ' ', ' ': ' ' }; let ascii = ''; for (y = 0; y < size; y += 2) { r1 = Math.floor((y - min) / cellSize); r2 = Math.floor((y + 1 - min) / cellSize); for (x = 0; x < size; x += 1) { p = '█'; if (min <= x && x < max && min <= y && y < max && _this.isDark(r1, Math.floor((x - min) / cellSize))) { p = ' '; } if (min <= x && x < max && min <= y+1 && y+1 < max && _this.isDark(r2, Math.floor((x - min) / cellSize))) { p += ' '; } else { p += '█'; } // Output 2 characters per pixel, to create full square. 1 character per pixels gives only half width of square. ascii += (margin < 1 && y+1 >= max) ? blocksLastLineNoMargin[p] : blocks[p]; } ascii += '\n'; } if (size % 2 && margin > 0) { return ascii.substring(0, ascii.length - size - 1) + Array(size+1).join('▀'); } return ascii.substring(0, ascii.length-1); }; const createASCII = function(cellSize? : number, margin? : number) { cellSize = cellSize || 1; if (cellSize < 2) { return _createHalfASCII(margin); } cellSize -= 1; margin = (typeof margin == 'undefined')? cellSize * 2 : margin; const size = _this.getModuleCount() * cellSize + margin * 2; const min = margin; const max = size - margin; let y : number, x : number, r : number, p : number; const white = Array(cellSize+1).join('██'); const black = Array(cellSize+1).join(' '); let ascii = ''; let line = ''; for (y = 0; y < size; y += 1) { r = Math.floor( (y - min) / cellSize); line = ''; for (x = 0; x < size; x += 1) { p = 1; if (min <= x && x < max && min <= y && y < max && _this.isDark(r, Math.floor((x - min) / cellSize))) { p = 0; } // Output 2 characters per pixel, to create full square. 1 character per pixels gives only half width of square. line += p ? white : black; } for (r = 0; r < cellSize; r += 1) { ascii += line + '\n'; } } return ascii.substring(0, ascii.length-1); }; const renderTo2dContext = function(context : CanvasRenderingContext2D, cellSize? : number) { cellSize = cellSize || 2; const length = _this.getModuleCount(); for (let row = 0; row < length; row++) { for (let col = 0; col < length; col++) { context.fillStyle = _this.isDark(row, col) ? 'black' : 'white'; context.fillRect(col * cellSize, row * cellSize, cellSize, cellSize); } } } const _this = { addData, isDark, getModuleCount, make, createTableTag, createSvgTag, createDataURL, createImgTag, createASCII, renderTo2dContext, }; return _this; }; //--------------------------------------------------------------------- // qrcode.stringToBytes //--------------------------------------------------------------------- qrcode.stringToBytes = function(s : string) { const bytes : number[] = []; for (let i = 0; i < s.length; i += 1) { const c = s.charCodeAt(i); bytes.push(c & 0xff); } return bytes; }; //--------------------------------------------------------------------- // QRMode //--------------------------------------------------------------------- const QRMode = { MODE_NUMBER : 1 << 0, MODE_ALPHA_NUM : 1 << 1, MODE_8BIT_BYTE : 1 << 2, MODE_KANJI : 1 << 3 }; //--------------------------------------------------------------------- // QRErrorCorrectionLevel //--------------------------------------------------------------------- const QRErrorCorrectionLevel : { [k : string] : number}= { L : 1, M : 0, Q : 3, H : 2 }; //--------------------------------------------------------------------- // QRMaskPattern //--------------------------------------------------------------------- const QRMaskPattern = { PATTERN000 : 0, PATTERN001 : 1, PATTERN010 : 2, PATTERN011 : 3, PATTERN100 : 4, PATTERN101 : 5, PATTERN110 : 6, PATTERN111 : 7 }; //--------------------------------------------------------------------- // QRUtil //--------------------------------------------------------------------- const QRUtil = function() { const 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] ]; const G15 = (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0); const G18 = (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0); const G15_MASK = (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1); const getBCHDigit = function(data : number) { let digit = 0; while (data != 0) { digit += 1; data >>>= 1; } return digit; }; const getBCHTypeInfo = function(data : number) { let d = data << 10; while (getBCHDigit(d) - getBCHDigit(G15) >= 0) { d ^= (G15 << (getBCHDigit(d) - getBCHDigit(G15) ) ); } return ( (data << 10) | d) ^ G15_MASK; }; const getBCHTypeNumber = function(data : number) { let d = data << 12; while (getBCHDigit(d) - getBCHDigit(G18) >= 0) { d ^= (G18 << (getBCHDigit(d) - getBCHDigit(G18) ) ); } return (data << 12) | d; }; const getPatternPosition = function(typeNumber : number) { return PATTERN_POSITION_TABLE[typeNumber - 1]; }; const getMaskFunction = function(maskPattern : number) { switch (maskPattern) { case QRMaskPattern.PATTERN000 : return function(i : number, j : number) { return (i + j) % 2 == 0; }; case QRMaskPattern.PATTERN001 : return function(i : number, _j : number) { return i % 2 == 0; }; case QRMaskPattern.PATTERN010 : return function(_i : number, j : number) { return j % 3 == 0; }; case QRMaskPattern.PATTERN011 : return function(i : number, j : number) { return (i + j) % 3 == 0; }; case QRMaskPattern.PATTERN100 : return function(i : number, j : number) { return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 == 0; }; case QRMaskPattern.PATTERN101 : return function(i : number, j : number) { return (i * j) % 2 + (i * j) % 3 == 0; }; case QRMaskPattern.PATTERN110 : return function(i : number, j : number) { return ( (i * j) % 2 + (i * j) % 3) % 2 == 0; }; case QRMaskPattern.PATTERN111 : return function(i : number, j : number) { return ( (i * j) % 3 + (i + j) % 2) % 2 == 0; }; default : throw 'bad maskPattern:' + maskPattern; } }; const getErrorCorrectPolynomial = function(errorCorrectLength : number) { let a = qrPolynomial([1], 0); for (let i = 0; i < errorCorrectLength; i += 1) { a = a.multiply(qrPolynomial([1, QRMath.gexp(i)], 0) ); } return a; }; const getLengthInBits = function(mode : number, type : number) { 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 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 '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 'mode:' + mode; } } else { throw 'type:' + type; } }; const getLostPoint = function(qrcode : QRCode) { const moduleCount = qrcode.getModuleCount(); let lostPoint = 0; // LEVEL1 for (let row = 0; row < moduleCount; row += 1) { for (let col = 0; col < moduleCount; col += 1) { let sameCount = 0; const dark = qrcode.isDark(row, col); for (let r = -1; r <= 1; r += 1) { if (row + r < 0 || moduleCount <= row + r) { continue; } for (let 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 (let row = 0; row < moduleCount - 1; row += 1) { for (let col = 0; col < moduleCount - 1; col += 1) { let 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 (let row = 0; row < moduleCount; row += 1) { for (let 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 (let col = 0; col < moduleCount; col += 1) { for (let 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 let darkCount = 0; for (let col = 0; col < moduleCount; col += 1) { for (let row = 0; row < moduleCount; row += 1) { if (qrcode.isDark(row, col) ) { darkCount += 1; } } } const ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5; lostPoint += ratio * 10; return lostPoint; }; const _this = { getBCHTypeInfo, getBCHTypeNumber, getPatternPosition, getMaskFunction, getErrorCorrectPolynomial, getLengthInBits, getLostPoint, }; return _this; }(); //--------------------------------------------------------------------- // QRMath //--------------------------------------------------------------------- const QRMath = function() { const EXP_TABLE = new Array(256); const LOG_TABLE = new Array(256); // initialize tables for (let i = 0; i < 8; i += 1) { EXP_TABLE[i] = 1 << i; } for (let 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 (let i = 0; i < 255; i += 1) { LOG_TABLE[EXP_TABLE[i] ] = i; } const glog = function(n : number) { if (n < 1) { throw 'glog(' + n + ')'; } return LOG_TABLE[n]; }; const gexp = function(n : number) { while (n < 0) { n += 255; } while (n >= 256) { n -= 255; } return EXP_TABLE[n]; }; const _this = { glog, gexp, }; return _this; }(); //--------------------------------------------------------------------- // qrPolynomial //--------------------------------------------------------------------- const qrPolynomial = function(num : number[], shift : number) : QRPolynominal { if (typeof num.length == 'undefined') { throw num.length + '/' + shift; } const _num = function() { let offset = 0; while (offset < num.length && num[offset] == 0) { offset += 1; } const _num : number[] = new Array(num.length - offset + shift); for (let i = 0; i < num.length - offset; i += 1) { _num[i] = num[i + offset]; } return _num; }(); const getAt = function(index : number) { return _num[index]; }; const getLength = function() { return _num.length; }; const multiply = function(e : QRPolynominal) { const num = new Array(_this.getLength() + e.getLength() - 1); for (let i = 0; i < _this.getLength(); i += 1) { for (let 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); }; const mod = function(e : QRPolynominal) { if (_this.getLength() - e.getLength() < 0) { return _this; } const ratio = QRMath.glog(_this.getAt(0) ) - QRMath.glog(e.getAt(0) ); const num = new Array(_this.getLength() ); for (let i = 0; i < _this.getLength(); i += 1) { num[i] = _this.getAt(i); } for (let 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); }; const _this = { getAt, getLength, multiply, mod, }; return _this; }; //--------------------------------------------------------------------- // QRRSBlock //--------------------------------------------------------------------- const QRRSBlock = function() { const RS_BLOCK_TABLE = [ // L // M // Q // H // 1 [1, 26, 19], [1, 26, 16], [1, 26, 13], [1, 26, 9], // 2 [1, 44, 34], [1, 44, 28], [1, 44, 22], [1, 44, 16], // 3 [1, 70, 55], [1, 70, 44], [2, 35, 17], [2, 35, 13], // 4 [1, 100, 80], [2, 50, 32], [2, 50, 24], [4, 25, 9], // 5 [1, 134, 108], [2, 67, 43], [2, 33, 15, 2, 34, 16], [2, 33, 11, 2, 34, 12], // 6 [2, 86, 68], [4, 43, 27], [4, 43, 19], [4, 43, 15], // 7 [2, 98, 78], [4, 49, 31], [2, 32, 14, 4, 33, 15], [4, 39, 13, 1, 40, 14], // 8 [2, 121, 97], [2, 60, 38, 2, 61, 39], [4, 40, 18, 2, 41, 19], [4, 40, 14, 2, 41, 15], // 9 [2, 146, 116], [3, 58, 36, 2, 59, 37], [4, 36, 16, 4, 37, 17], [4, 36, 12, 4, 37, 13], // 10 [2, 86, 68, 2, 87, 69], [4, 69, 43, 1, 70, 44], [6, 43, 19, 2, 44, 20], [6, 43, 15, 2, 44, 16], // 11 [4, 101, 81], [1, 80, 50, 4, 81, 51], [4, 50, 22, 4, 51, 23], [3, 36, 12, 8, 37, 13], // 12 [2, 116, 92, 2, 117, 93], [6, 58, 36, 2, 59, 37], [4, 46, 20, 6, 47, 21], [7, 42, 14, 4, 43, 15], // 13 [4, 133, 107], [8, 59, 37, 1, 60, 38], [8, 44, 20, 4, 45, 21], [12, 33, 11, 4, 34, 12], // 14 [3, 145, 115, 1, 146, 116], [4, 64, 40, 5, 65, 41], [11, 36, 16, 5, 37, 17], [11, 36, 12, 5, 37, 13], // 15 [5, 109, 87, 1, 110, 88], [5, 65, 41, 5, 66, 42], [5, 54, 24, 7, 55, 25], [11, 36, 12, 7, 37, 13], // 16 [5, 122, 98, 1, 123, 99], [7, 73, 45, 3, 74, 46], [15, 43, 19, 2, 44, 20], [3, 45, 15, 13, 46, 16], // 17 [1, 135, 107, 5, 136, 108], [10, 74, 46, 1, 75, 47], [1, 50, 22, 15, 51, 23], [2, 42, 14, 17, 43, 15], // 18 [5, 150, 120, 1, 151, 121], [9, 69, 43, 4, 70, 44], [17, 50, 22, 1, 51, 23], [2, 42, 14, 19, 43, 15], // 19 [3, 141, 113, 4, 142, 114], [3, 70, 44, 11, 71, 45], [17, 47, 21, 4, 48, 22], [9, 39, 13, 16, 40, 14], // 20 [3, 135, 107, 5, 136, 108], [3, 67, 41, 13, 68, 42], [15, 54, 24, 5, 55, 25], [15, 43, 15, 10, 44, 16], // 21 [4, 144, 116, 4, 145, 117], [17, 68, 42], [17, 50, 22, 6, 51, 23], [19, 46, 16, 6, 47, 17], // 22 [2, 139, 111, 7, 140, 112], [17, 74, 46], [7, 54, 24, 16, 55, 25], [34, 37, 13], // 23 [4, 151, 121, 5, 152, 122], [4, 75, 47, 14, 76, 48], [11, 54, 24, 14, 55, 25], [16, 45, 15, 14, 46, 16], // 24 [6, 147, 117, 4, 148, 118], [6, 73, 45, 14, 74, 46], [11, 54, 24, 16, 55, 25], [30, 46, 16, 2, 47, 17], // 25 [8, 132, 106, 4, 133, 107], [8, 75, 47, 13, 76, 48], [7, 54, 24, 22, 55, 25], [22, 45, 15, 13, 46, 16], // 26 [10, 142, 114, 2, 143, 115], [19, 74, 46, 4, 75, 47], [28, 50, 22, 6, 51, 23], [33, 46, 16, 4, 47, 17], // 27 [8, 152, 122, 4, 153, 123], [22, 73, 45, 3, 74, 46], [8, 53, 23, 26, 54, 24], [12, 45, 15, 28, 46, 16], // 28 [3, 147, 117, 10, 148, 118], [3, 73, 45, 23, 74, 46], [4, 54, 24, 31, 55, 25], [11, 45, 15, 31, 46, 16], // 29 [7, 146, 116, 7, 147, 117], [21, 73, 45, 7, 74, 46], [1, 53, 23, 37, 54, 24], [19, 45, 15, 26, 46, 16], // 30 [5, 145, 115, 10, 146, 116], [19, 75, 47, 10, 76, 48], [15, 54, 24, 25, 55, 25], [23, 45, 15, 25, 46, 16], // 31 [13, 145, 115, 3, 146, 116], [2, 74, 46, 29, 75, 47], [42, 54, 24, 1, 55, 25], [23, 45, 15, 28, 46, 16], // 32 [17, 145, 115], [10, 74, 46, 23, 75, 47], [10, 54, 24, 35, 55, 25], [19, 45, 15, 35, 46, 16], // 33 [17, 145, 115, 1, 146, 116], [14, 74, 46, 21, 75, 47], [29, 54, 24, 19, 55, 25], [11, 45, 15, 46, 46, 16], // 34 [13, 145, 115, 6, 146, 116], [14, 74, 46, 23, 75, 47], [44, 54, 24, 7, 55, 25], [59, 46, 16, 1, 47, 17], // 35 [12, 151, 121, 7, 152, 122], [12, 75, 47, 26, 76, 48], [39, 54, 24, 14, 55, 25], [22, 45, 15, 41, 46, 16], // 36 [6, 151, 121, 14, 152, 122], [6, 75, 47, 34, 76, 48], [46, 54, 24, 10, 55, 25], [2, 45, 15, 64, 46, 16], // 37 [17, 152, 122, 4, 153, 123], [29, 74, 46, 14, 75, 47], [49, 54, 24, 10, 55, 25], [24, 45, 15, 46, 46, 16], // 38 [4, 152, 122, 18, 153, 123], [13, 74, 46, 32, 75, 47], [48, 54, 24, 14, 55, 25], [42, 45, 15, 32, 46, 16], // 39 [20, 147, 117, 4, 148, 118], [40, 75, 47, 7, 76, 48], [43, 54, 24, 22, 55, 25], [10, 45, 15, 67, 46, 16], // 40 [19, 148, 118, 6, 149, 119], [18, 75, 47, 31, 76, 48], [34, 54, 24, 34, 55, 25], [20, 45, 15, 61, 46, 16] ]; const qrRSBlock = function(totalCount : number, dataCount : number) : QRRSBlock { const _this = { totalCount, dataCount, }; return _this; }; const getRsBlockTable = function(typeNumber : number, errorCorrectionLevel : number) { switch(errorCorrectionLevel) { case QRErrorCorrectionLevel.L : return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0]; case QRErrorCorrectionLevel.M : return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1]; case QRErrorCorrectionLevel.Q : return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2]; case QRErrorCorrectionLevel.H : return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3]; default : return undefined; } }; const getRSBlocks = function(typeNumber : number, errorCorrectionLevel : number) { const rsBlock = getRsBlockTable(typeNumber, errorCorrectionLevel); if (typeof rsBlock == 'undefined') { throw 'bad rs block @ typeNumber:' + typeNumber + '/errorCorrectionLevel:' + errorCorrectionLevel; } const length = rsBlock.length / 3; const list : QRRSBlock[] = []; for (let i = 0; i < length; i += 1) { const count = rsBlock[i * 3 + 0]; const totalCount = rsBlock[i * 3 + 1]; const dataCount = rsBlock[i * 3 + 2]; for (let j = 0; j < count; j += 1) { list.push(qrRSBlock(totalCount, dataCount) ); } } return list; }; const _this = { getRSBlocks }; return _this; }(); //--------------------------------------------------------------------- // qrBitBuffer //--------------------------------------------------------------------- const qrBitBuffer = function() { const _buffer : number[] = []; let _length = 0; const getBuffer = function() { return _buffer; }; const getAt = function(index : number) { const bufIndex = Math.floor(index / 8); return ( (_buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1; }; const put = function(num : number, length : number) { for (let i = 0; i < length; i += 1) { _this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1); } }; const getLengthInBits = function() { return _length; }; const putBit = function(bit : boolean) { const bufIndex = Math.floor(_length / 8); if (_buffer.length <= bufIndex) { _buffer.push(0); } if (bit) { _buffer[bufIndex] |= (0x80 >>> (_length % 8) ); } _length += 1; }; const _this = { getBuffer, getAt, put, getLengthInBits, putBit, }; return _this; }; //--------------------------------------------------------------------- // qrNumber //--------------------------------------------------------------------- const qrNumber = function(data : string) : QRData { const _mode = QRMode.MODE_NUMBER; const _data = data; const getMode = function() { return _mode; }; const getLength = function() { return _data.length; }; const write = function(buffer : QRBitBuffer) { const data = _data; let i = 0; while (i + 2 < data.length) { buffer.put(strToNum(data.substring(i, i + 3) ), 10); i += 3; } if (i < data.length) { if (data.length - i == 1) { buffer.put(strToNum(data.substring(i, i + 1) ), 4); } else if (data.length - i == 2) { buffer.put(strToNum(data.substring(i, i + 2) ), 7); } } }; const strToNum = function(s : string) { let num = 0; for (let i = 0; i < s.length; i += 1) { num = num * 10 + charToNum(s.charAt(i) ); } return num; }; const charToNum = function(c : string) { if ('0' <= c && c <= '9') { return c.charCodeAt(0) - '0'.charCodeAt(0); } throw 'illegal char :' + c; }; const _this = { getMode, getLength, write }; return _this; }; //--------------------------------------------------------------------- // qrAlphaNum //--------------------------------------------------------------------- const qrAlphaNum = function(data : string) : QRData { const _mode = QRMode.MODE_ALPHA_NUM; const _data = data; const getMode = function() { return _mode; }; const getLength = function() { return _data.length; }; const write = function(buffer : QRBitBuffer) { const s = _data; let i = 0; while (i + 1 < s.length) { buffer.put( getCode(s.charAt(i) ) * 45 + getCode(s.charAt(i + 1) ), 11); i += 2; } if (i < s.length) { buffer.put(getCode(s.charAt(i) ), 6); } }; const getCode = function(c : string) { if ('0' <= c && c <= '9') { return c.charCodeAt(0) - '0'.charCodeAt(0); } else if ('A' <= c && c <= 'Z') { return c.charCodeAt(0) - 'A'.charCodeAt(0) + 10; } else { switch (c) { case '\u0020' : return 36; case '$' : return 37; case '%' : return 38; case '*' : return 39; case '+' : return 40; case '-' : return 41; case '.' : return 42; case '/' : return 43; case ':' : return 44; default : throw 'illegal char :' + c; } } }; const _this = { getMode, getLength, write }; return _this; }; //--------------------------------------------------------------------- // qr8BitByte //--------------------------------------------------------------------- const qr8BitByte = function(data : string) : QRData { const _mode = QRMode.MODE_8BIT_BYTE; const _bytes = qrcode.stringToBytes(data); const getMode = function() { return _mode; }; const getLength = function() { return _bytes.length; }; const write = function(buffer : QRBitBuffer) { for (let i = 0; i < _bytes.length; i += 1) { buffer.put(_bytes[i], 8); } }; const _this = { getMode, getLength, write }; return _this; }; //--------------------------------------------------------------------- // qrKanji //--------------------------------------------------------------------- const qrKanji = function(data : string) : QRData { const _mode = QRMode.MODE_KANJI; const stringToBytes = qrcode.stringToBytes; !function(c, code) : any { // self test for sjis support. const test = stringToBytes(c); if (test.length != 2 || ( (test[0] << 8) | test[1]) != code) { throw 'sjis not supported.'; } }('\u53cb', 0x9746); const _bytes = stringToBytes(data); const getMode = function() { return _mode; }; const getLength = function() { return ~~(_bytes.length / 2); }; const write = function(buffer : QRBitBuffer) { const data = _bytes; let i = 0; while (i + 1 < data.length) { let c = ( (0xff & data[i]) << 8) | (0xff & data[i + 1]); if (0x8140 <= c && c <= 0x9FFC) { c -= 0x8140; } else if (0xE040 <= c && c <= 0xEBBF) { c -= 0xC140; } else { throw 'illegal char at ' + (i + 1) + '/' + c; } c = ( (c >>> 8) & 0xff) * 0xC0 + (c & 0xff); buffer.put(c, 13); i += 2; } if (i < data.length) { throw 'illegal char at ' + (i + 1); } }; const _this = { getMode, getLength, write }; return _this; }; //===================================================================== // GIF Support etc. // //--------------------------------------------------------------------- // byteArrayOutputStream //--------------------------------------------------------------------- type ByteArrayOutputStream = { writeByte: (b: number) => void; writeShort: (i: number) => void; writeBytes: (b: number[], off?: number, len?: number) => void; writeString: (s: string) => void; toByteArray: () => number[]; toString: () => string; }; const byteArrayOutputStream = function() : ByteArrayOutputStream { const _bytes : number[] = []; const writeByte = function(b : number) { _bytes.push(b & 0xff); }; const writeShort = function(i : number) { _this.writeByte(i); _this.writeByte(i >>> 8); }; const writeBytes = function(b : number[], off? : number, len? : number) { off = off || 0; len = len || b.length; for (let i = 0; i < len; i += 1) { _this.writeByte(b[i + off]); } }; const writeString = function(s : string) { for (let i = 0; i < s.length; i += 1) { _this.writeByte(s.charCodeAt(i) ); } }; const toByteArray = function() { return _bytes; }; const toString = function() { let s = ''; s += '['; for (let i = 0; i < _bytes.length; i += 1) { if (i > 0) { s += ','; } s += _bytes[i]; } s += ']'; return s; }; const _this = { writeByte, writeShort, writeBytes, writeString, toByteArray, toString, }; return _this; }; //--------------------------------------------------------------------- // base64EncodeOutputStream //--------------------------------------------------------------------- const base64EncodeOutputStream = function() { let _buffer = 0; let _buflen = 0; let _length = 0; let _base64 = ''; const writeEncoded = function(b : number) { _base64 += String.fromCharCode(encode(b & 0x3f) ); }; const encode = function(n : number) { if (n < 0) { throw 'n:' + n; } 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; } else { throw 'n:' + n; } }; const writeByte = function(n : number) { _buffer = (_buffer << 8) | (n & 0xff); _buflen += 8; _length += 1; while (_buflen >= 6) { writeEncoded(_buffer >>> (_buflen - 6) ); _buflen -= 6; } }; const flush = function() { if (_buflen > 0) { writeEncoded(_buffer << (6 - _buflen) ); _buffer = 0; _buflen = 0; } if (_length % 3 != 0) { // padding const padlen = 3 - _length % 3; for (let i = 0; i < padlen; i += 1) { _base64 += '='; } } }; const toString = function() { return _base64; }; const _this = { writeByte, flush, toString, }; return _this; }; //--------------------------------------------------------------------- // base64DecodeInputStream //--------------------------------------------------------------------- const base64DecodeInputStream = function(str : string) { const _str = str; let _pos = 0; let _buffer = 0; let _buflen = 0; const read = function() { while (_buflen < 8) { if (_pos >= _str.length) { if (_buflen == 0) { return -1; } throw 'unexpected end of file./' + _buflen; } const 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; } const n = (_buffer >>> (_buflen - 8) ) & 0xff; _buflen -= 8; return n; }; const decode = function(c : number) { 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 'c:' + c; } }; const _this = { read }; return _this; }; //--------------------------------------------------------------------- // gifImage (B/W) //--------------------------------------------------------------------- const gifImage = function(width : number, height : number) { const _width = width; const _height = height; const _data = new Array(width * height); const setPixel = function(x : number, y : number, pixel : number) { _data[y * _width + x] = pixel; }; const write = function(out : ByteArrayOutputStream) { //--------------------------------- // 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 const lzwMinCodeSize = 2; const raster = getLZWRaster(lzwMinCodeSize); out.writeByte(lzwMinCodeSize); let 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(';'); }; const bitOutputStream = function(out : ByteArrayOutputStream) { const _out = out; let _bitLength = 0; let _bitBuffer = 0; const write =