FM / QRCode

/usr/local/lib/node_modules/npm/node_modules/qrcode-terminal/vendor/QRCode/

/usr/local/lib/node_modules/npm/node_modules/qrcode-terminal/vendor/QRCode

Name	Size	Mode	Actions
index.js	10666	0644	edit dl rm
QR8bitByte.js	382	0644	edit dl rm
QRBitBuffer.js	702	0644	edit dl rm
QRErrorCorrectLevel.js	54	0644	edit dl rm
QRMaskPattern.js	157	0644	edit dl rm
QRMath.js	673	0644	edit dl rm
QRMode.js	149	0644	edit dl rm
QRPolynomial.js	1332	0644	edit dl rm
QRRSBlock.js	5556	0644	edit dl rm
QRUtil.js	8222	0644	edit dl rm

Edit: /usr/local/lib/node_modules/npm/node_modules/qrcode-terminal/vendor/QRCode/QRUtil.js (8222B)

var QRMode = require('./QRMode');
var QRPolynomial = require('./QRPolynomial');
var QRMath = require('./QRMath');
var QRMaskPattern = require('./QRMaskPattern');

var QRUtil = {

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]
    ],

G15 : (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
    G18 : (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
    G15_MASK : (1 << 14) | (1 << 12) | (1 << 10)    | (1 << 4) | (1 << 1),

getBCHTypeInfo : function(data) {
        var d = data << 10;
        while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) {
            d ^= (QRUtil.G15 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) ) );    
        }
        return ( (data << 10) | d) ^ QRUtil.G15_MASK;
    },

getBCHTypeNumber : function(data) {
        var d = data << 12;
        while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) {
            d ^= (QRUtil.G18 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) ) );    
        }
        return (data << 12) | d;
    },

getBCHDigit : function(data) {

var digit = 0;

while (data !== 0) {
            digit++;
            data >>>= 1;
        }

return digit;
    },

getPatternPosition : function(typeNumber) {
        return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
    },

getMask : function(maskPattern, i, j) {
        
        switch (maskPattern) {
            
        case QRMaskPattern.PATTERN000 : return (i + j) % 2 === 0;
        case QRMaskPattern.PATTERN001 : return i % 2 === 0;
        case QRMaskPattern.PATTERN010 : return j % 3 === 0;
        case QRMaskPattern.PATTERN011 : return (i + j) % 3 === 0;
        case QRMaskPattern.PATTERN100 : return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 === 0;
        case QRMaskPattern.PATTERN101 : return (i * j) % 2 + (i * j) % 3 === 0;
        case QRMaskPattern.PATTERN110 : return ( (i * j) % 2 + (i * j) % 3) % 2 === 0;
        case QRMaskPattern.PATTERN111 : return ( (i * j) % 3 + (i + j) % 2) % 2 === 0;

default :
            throw new Error("bad maskPattern:" + maskPattern);
        }
    },

getErrorCorrectPolynomial : function(errorCorrectLength) {

var a = new QRPolynomial([1], 0);

for (var i = 0; i < errorCorrectLength; i++) {
            a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0) );
        }

return a;
    },

getLengthInBits : function(mode, type) {

if (1 <= type && type < 10) {

// 1 - 9

switch(mode) {
            case QRMode.MODE_NUMBER     : return 10;
            case QRMode.MODE_ALPHA_NUM  : return 9;
            case QRMode.MODE_8BIT_BYTE  : return 8;
            case QRMode.MODE_KANJI      : return 8;
            default :
                throw new Error("mode:" + mode);
            }

} else if (type < 27) {

// 10 - 26

switch(mode) {
            case QRMode.MODE_NUMBER     : return 12;
            case QRMode.MODE_ALPHA_NUM  : return 11;
            case QRMode.MODE_8BIT_BYTE  : return 16;
            case QRMode.MODE_KANJI      : return 10;
            default :
                throw new Error("mode:" + mode);
            }

} else if (type < 41) {

// 27 - 40

switch(mode) {
            case QRMode.MODE_NUMBER     : return 14;
            case QRMode.MODE_ALPHA_NUM  : return 13;
            case QRMode.MODE_8BIT_BYTE  : return 16;
            case QRMode.MODE_KANJI      : return 12;
            default :
                throw new Error("mode:" + mode);
            }

} else {
            throw new Error("type:" + type);
        }
    },

getLostPoint : function(qrCode) {
        
        var moduleCount = qrCode.getModuleCount();
        var lostPoint = 0;
        var row = 0; 
        var col = 0;

// LEVEL1
        
        for (row = 0; row < moduleCount; row++) {

for (col = 0; col < moduleCount; col++) {

var sameCount = 0;
                var dark = qrCode.isDark(row, col);

for (var r = -1; r <= 1; r++) {

if (row + r < 0 || moduleCount <= row + r) {
                        continue;
                    }

for (var c = -1; c <= 1; c++) {

if (col + c < 0 || moduleCount <= col + c) {
                            continue;
                        }

if (r === 0 && c === 0) {
                            continue;
                        }

if (dark === qrCode.isDark(row + r, col + c) ) {
                            sameCount++;
                        }
                    }
                }

if (sameCount > 5) {
                    lostPoint += (3 + sameCount - 5);
                }
            }
        }

// LEVEL2

for (row = 0; row < moduleCount - 1; row++) {
            for (col = 0; col < moduleCount - 1; col++) {
                var count = 0;
                if (qrCode.isDark(row,     col    ) ) count++;
                if (qrCode.isDark(row + 1, col    ) ) count++;
                if (qrCode.isDark(row,     col + 1) ) count++;
                if (qrCode.isDark(row + 1, col + 1) ) count++;
                if (count === 0 || count === 4) {
                    lostPoint += 3;
                }
            }
        }

// LEVEL3

for (row = 0; row < moduleCount; row++) {
            for (col = 0; col < moduleCount - 6; col++) {
                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 (col = 0; col < moduleCount; col++) {
            for (row = 0; row < moduleCount - 6; row++) {
                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 (col = 0; col < moduleCount; col++) {
            for (row = 0; row < moduleCount; row++) {
                if (qrCode.isDark(row, col) ) {
                    darkCount++;
                }
            }
        }
        
        var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
        lostPoint += ratio * 10;

return lostPoint;       
    }

};

module.exports = QRUtil;

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