ok
Mini Shell
//---------------------------------------------------------------------
// 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;
Zerion Mini Shell 1.0