qrcode.js

/**
 * @fileoverview
 * - Using the 'QRCode for Javascript library'
 * - Fixed dataset of 'QRCode for Javascript library' for support full-spec.
 * - this library has no dependencies.
 * 
 * @author davidshimjs
 * @see <a href="http://www.d-project.com/" target="_blank">http://www.d-project.com/</a>
 * @see https://github.com/KeeeX/qrcodejs/blob/master/qrcode.js
 */
var QRCode;

(function () {
	//---------------------------------------------------------------------
	// 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
	//
	//---------------------------------------------------------------------
	function QR8bitByte(data) {
		this.mode = QRMode.MODE_8BIT_BYTE;
		this.data = data;
		this.parsedData = [];

		// Added to support UTF-8 Characters
		for (var i = 0, l = this.data.length; i < l; i++) {
			var byteArray = [];
			var code = this.data.charCodeAt(i);

			if (code > 0x10000) {
				byteArray[0] = 0xF0 | ((code & 0x1C0000) >>> 18);
				byteArray[1] = 0x80 | ((code & 0x3F000) >>> 12);
				byteArray[2] = 0x80 | ((code & 0xFC0) >>> 6);
				byteArray[3] = 0x80 | (code & 0x3F);
			} else if (code > 0x800) {
				byteArray[0] = 0xE0 | ((code & 0xF000) >>> 12);
				byteArray[1] = 0x80 | ((code & 0xFC0) >>> 6);
				byteArray[2] = 0x80 | (code & 0x3F);
			} else if (code > 0x80) {
				byteArray[0] = 0xC0 | ((code & 0x7C0) >>> 6);
				byteArray[1] = 0x80 | (code & 0x3F);
			} else {
				byteArray[0] = code;
			}

			this.parsedData.push(byteArray);
		}

		this.parsedData = Array.prototype.concat.apply([], this.parsedData);

		if (this.parsedData.length != this.data.length) {
			this.parsedData.unshift(191);
			this.parsedData.unshift(187);
			this.parsedData.unshift(239);
		}
	}

	QR8bitByte.prototype = {
		getLength: function (buffer) {
			return this.parsedData.length;
		},
		write: function (buffer) {
			for (var i = 0, l = this.parsedData.length; i < l; i++) {
				buffer.put(this.parsedData[i], 8);
			}
		}
	};

	function QRCodeModel(typeNumber, errorCorrectLevel) {
		this.typeNumber = typeNumber;
		this.errorCorrectLevel = errorCorrectLevel;
		this.modules = null;
		this.moduleCount = 0;
		this.dataCache = null;
		this.dataList = [];
	}

	QRCodeModel.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 () { 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; } }
			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 = QRCodeModel.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 (r == -2 || r == 2 || c == -2 || 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); for (var i = 0; i < 18; i++) { var mod = (!test && ((bits >> i) & 1) == 1); this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod; }
			for (var i = 0; i < 18; i++) { var mod = (!test && ((bits >> i) & 1) == 1); this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod; }
		}, setupTypeInfo: function (test, maskPattern) {
			var data = (this.errorCorrectLevel << 3) | maskPattern; var bits = QRUtil.getBCHTypeInfo(data); for (var i = 0; i < 15; i++) { var mod = (!test && ((bits >> i) & 1) == 1); if (i < 6) { this.modules[i][8] = mod; } else if (i < 8) { this.modules[i + 1][8] = mod; } else { this.modules[this.moduleCount - 15 + i][8] = mod; } }
			for (var i = 0; i < 15; i++) { var mod = (!test && ((bits >> i) & 1) == 1); if (i < 8) { this.modules[8][this.moduleCount - i - 1] = mod; } else if (i < 9) { this.modules[8][15 - i - 1 + 1] = mod; } else { this.modules[8][15 - i - 1] = mod; } }
			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; }
				}
			}
		}
	}; QRCodeModel.PAD0 = 0xEC; QRCodeModel.PAD1 = 0x11; QRCodeModel.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); }
		var totalDataCount = 0; for (var i = 0; i < rsBlocks.length; i++) { totalDataCount += rsBlocks[i].dataCount; }
		if (buffer.getLengthInBits() > totalDataCount * 8) {
			throw new Error("code length overflow. ("
				+ buffer.getLengthInBits()
				+ ">"
				+ totalDataCount * 8
				+ ")");
		}
		if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) { buffer.put(0, 4); }
		while (buffer.getLengthInBits() % 8 != 0) { buffer.putBit(false); }
		while (true) {
			if (buffer.getLengthInBits() >= totalDataCount * 8) { break; }
			buffer.put(QRCodeModel.PAD0, 8); if (buffer.getLengthInBits() >= totalDataCount * 8) { break; }
			buffer.put(QRCodeModel.PAD1, 8);
		}
		return QRCodeModel.createBytes(buffer, rsBlocks);
	}; QRCodeModel.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 i = 0; i < ecdata[r].length; i++) { var modIndex = i + modPoly.getLength() - ecdata[r].length; ecdata[r][i] = (modIndex >= 0) ? modPoly.get(modIndex) : 0; }
		}
		var totalCodeCount = 0; for (var i = 0; i < rsBlocks.length; i++) { totalCodeCount += rsBlocks[i].totalCount; }
		var data = new Array(totalCodeCount); var index = 0; for (var i = 0; i < maxDcCount; i++) { for (var r = 0; r < rsBlocks.length; r++) { if (i < dcdata[r].length) { data[index++] = dcdata[r][i]; } } }
		for (var i = 0; i < maxEcCount; i++) { for (var r = 0; r < rsBlocks.length; r++) { if (i < ecdata[r].length) { data[index++] = ecdata[r][i]; } } }
		return data;
	}; var QRMode = { MODE_NUMBER: 1 << 0, MODE_ALPHA_NUM: 1 << 1, MODE_8BIT_BYTE: 1 << 2, MODE_KANJI: 1 << 3 }; var QRErrorCorrectLevel = { L: 1, M: 0, Q: 3, H: 2 }; var QRMaskPattern = { PATTERN000: 0, PATTERN001: 1, PATTERN010: 2, PATTERN011: 3, PATTERN100: 4, PATTERN101: 5, PATTERN110: 6, PATTERN111: 7 }; 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) { 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) { 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) { 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; for (var row = 0; row < moduleCount; row++) {
				for (var 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); }
				}
			}
			for (var row = 0; row < moduleCount - 1; row++) { for (var 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; } } }
			for (var row = 0; row < moduleCount; row++) { for (var 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 (var col = 0; col < moduleCount; col++) { for (var 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; } } }
			var darkCount = 0; for (var col = 0; col < moduleCount; col++) { for (var 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;
		}
	}; var QRMath = {
		glog: function (n) {
			if (n < 1) { throw new Error("glog(" + n + ")"); }
			return QRMath.LOG_TABLE[n];
		}, gexp: function (n) {
			while (n < 0) { n += 255; }
			while (n >= 256) { n -= 255; }
			return QRMath.EXP_TABLE[n];
		}, EXP_TABLE: new Array(256), LOG_TABLE: new Array(256)
	}; for (var i = 0; i < 8; i++) { QRMath.EXP_TABLE[i] = 1 << i; }
	for (var i = 8; i < 256; i++) { QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4] ^ QRMath.EXP_TABLE[i - 5] ^ QRMath.EXP_TABLE[i - 6] ^ QRMath.EXP_TABLE[i - 8]; }
	for (var i = 0; i < 255; i++) { QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i; }
	function QRPolynomial(num, shift) {
		if (num.length == undefined) { throw new Error(num.length + "/" + shift); }
		var offset = 0; while (offset < num.length && num[offset] == 0) { offset++; }
		this.num = new Array(num.length - offset + shift); for (var i = 0; i < num.length - offset; i++) { this.num[i] = num[i + offset]; }
	}
	QRPolynomial.prototype = {
		get: function (index) { return this.num[index]; }, getLength: function () { return this.num.length; }, multiply: function (e) {
			var num = new Array(this.getLength() + e.getLength() - 1); for (var i = 0; i < this.getLength(); i++) { for (var j = 0; j < e.getLength(); j++) { num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i)) + QRMath.glog(e.get(j))); } }
			return new QRPolynomial(num, 0);
		}, mod: function (e) {
			if (this.getLength() - e.getLength() < 0) { return this; }
			var ratio = QRMath.glog(this.get(0)) - QRMath.glog(e.get(0)); var num = new Array(this.getLength()); for (var i = 0; i < this.getLength(); i++) { num[i] = this.get(i); }
			for (var i = 0; i < e.getLength(); i++) { num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio); }
			return new QRPolynomial(num, 0).mod(e);
		}
	}; function QRRSBlock(totalCount, dataCount) { this.totalCount = totalCount; this.dataCount = dataCount; }
	QRRSBlock.RS_BLOCK_TABLE = [[1, 26, 19], [1, 26, 16], [1, 26, 13], [1, 26, 9], [1, 44, 34], [1, 44, 28], [1, 44, 22], [1, 44, 16], [1, 70, 55], [1, 70, 44], [2, 35, 17], [2, 35, 13], [1, 100, 80], [2, 50, 32], [2, 50, 24], [4, 25, 9], [1, 134, 108], [2, 67, 43], [2, 33, 15, 2, 34, 16], [2, 33, 11, 2, 34, 12], [2, 86, 68], [4, 43, 27], [4, 43, 19], [4, 43, 15], [2, 98, 78], [4, 49, 31], [2, 32, 14, 4, 33, 15], [4, 39, 13, 1, 40, 14], [2, 121, 97], [2, 60, 38, 2, 61, 39], [4, 40, 18, 2, 41, 19], [4, 40, 14, 2, 41, 15], [2, 146, 116], [3, 58, 36, 2, 59, 37], [4, 36, 16, 4, 37, 17], [4, 36, 12, 4, 37, 13], [2, 86, 68, 2, 87, 69], [4, 69, 43, 1, 70, 44], [6, 43, 19, 2, 44, 20], [6, 43, 15, 2, 44, 16], [4, 101, 81], [1, 80, 50, 4, 81, 51], [4, 50, 22, 4, 51, 23], [3, 36, 12, 8, 37, 13], [2, 116, 92, 2, 117, 93], [6, 58, 36, 2, 59, 37], [4, 46, 20, 6, 47, 21], [7, 42, 14, 4, 43, 15], [4, 133, 107], [8, 59, 37, 1, 60, 38], [8, 44, 20, 4, 45, 21], [12, 33, 11, 4, 34, 12], [3, 145, 115, 1, 146, 116], [4, 64, 40, 5, 65, 41], [11, 36, 16, 5, 37, 17], [11, 36, 12, 5, 37, 13], [5, 109, 87, 1, 110, 88], [5, 65, 41, 5, 66, 42], [5, 54, 24, 7, 55, 25], [11, 36, 12, 7, 37, 13], [5, 122, 98, 1, 123, 99], [7, 73, 45, 3, 74, 46], [15, 43, 19, 2, 44, 20], [3, 45, 15, 13, 46, 16], [1, 135, 107, 5, 136, 108], [10, 74, 46, 1, 75, 47], [1, 50, 22, 15, 51, 23], [2, 42, 14, 17, 43, 15], [5, 150, 120, 1, 151, 121], [9, 69, 43, 4, 70, 44], [17, 50, 22, 1, 51, 23], [2, 42, 14, 19, 43, 15], [3, 141, 113, 4, 142, 114], [3, 70, 44, 11, 71, 45], [17, 47, 21, 4, 48, 22], [9, 39, 13, 16, 40, 14], [3, 135, 107, 5, 136, 108], [3, 67, 41, 13, 68, 42], [15, 54, 24, 5, 55, 25], [15, 43, 15, 10, 44, 16], [4, 144, 116, 4, 145, 117], [17, 68, 42], [17, 50, 22, 6, 51, 23], [19, 46, 16, 6, 47, 17], [2, 139, 111, 7, 140, 112], [17, 74, 46], [7, 54, 24, 16, 55, 25], [34, 37, 13], [4, 151, 121, 5, 152, 122], [4, 75, 47, 14, 76, 48], [11, 54, 24, 14, 55, 25], [16, 45, 15, 14, 46, 16], [6, 147, 117, 4, 148, 118], [6, 73, 45, 14, 74, 46], [11, 54, 24, 16, 55, 25], [30, 46, 16, 2, 47, 17], [8, 132, 106, 4, 133, 107], [8, 75, 47, 13, 76, 48], [7, 54, 24, 22, 55, 25], [22, 45, 15, 13, 46, 16], [10, 142, 114, 2, 143, 115], [19, 74, 46, 4, 75, 47], [28, 50, 22, 6, 51, 23], [33, 46, 16, 4, 47, 17], [8, 152, 122, 4, 153, 123], [22, 73, 45, 3, 74, 46], [8, 53, 23, 26, 54, 24], [12, 45, 15, 28, 46, 16], [3, 147, 117, 10, 148, 118], [3, 73, 45, 23, 74, 46], [4, 54, 24, 31, 55, 25], [11, 45, 15, 31, 46, 16], [7, 146, 116, 7, 147, 117], [21, 73, 45, 7, 74, 46], [1, 53, 23, 37, 54, 24], [19, 45, 15, 26, 46, 16], [5, 145, 115, 10, 146, 116], [19, 75, 47, 10, 76, 48], [15, 54, 24, 25, 55, 25], [23, 45, 15, 25, 46, 16], [13, 145, 115, 3, 146, 116], [2, 74, 46, 29, 75, 47], [42, 54, 24, 1, 55, 25], [23, 45, 15, 28, 46, 16], [17, 145, 115], [10, 74, 46, 23, 75, 47], [10, 54, 24, 35, 55, 25], [19, 45, 15, 35, 46, 16], [17, 145, 115, 1, 146, 116], [14, 74, 46, 21, 75, 47], [29, 54, 24, 19, 55, 25], [11, 45, 15, 46, 46, 16], [13, 145, 115, 6, 146, 116], [14, 74, 46, 23, 75, 47], [44, 54, 24, 7, 55, 25], [59, 46, 16, 1, 47, 17], [12, 151, 121, 7, 152, 122], [12, 75, 47, 26, 76, 48], [39, 54, 24, 14, 55, 25], [22, 45, 15, 41, 46, 16], [6, 151, 121, 14, 152, 122], [6, 75, 47, 34, 76, 48], [46, 54, 24, 10, 55, 25], [2, 45, 15, 64, 46, 16], [17, 152, 122, 4, 153, 123], [29, 74, 46, 14, 75, 47], [49, 54, 24, 10, 55, 25], [24, 45, 15, 46, 46, 16], [4, 152, 122, 18, 153, 123], [13, 74, 46, 32, 75, 47], [48, 54, 24, 14, 55, 25], [42, 45, 15, 32, 46, 16], [20, 147, 117, 4, 148, 118], [40, 75, 47, 7, 76, 48], [43, 54, 24, 22, 55, 25], [10, 45, 15, 67, 46, 16], [19, 148, 118, 6, 149, 119], [18, 75, 47, 31, 76, 48], [34, 54, 24, 34, 55, 25], [20, 45, 15, 61, 46, 16]]; QRRSBlock.getRSBlocks = function (typeNumber, errorCorrectLevel) {
		var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel); if (rsBlock == undefined) { throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel); }
		var length = rsBlock.length / 3; var list = []; for (var i = 0; i < length; i++) { 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++) { list.push(new QRRSBlock(totalCount, dataCount)); } }
		return list;
	}; QRRSBlock.getRsBlockTable = function (typeNumber, errorCorrectLevel) { switch (errorCorrectLevel) { case QRErrorCorrectLevel.L: return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0]; case QRErrorCorrectLevel.M: return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1]; case QRErrorCorrectLevel.Q: return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2]; case QRErrorCorrectLevel.H: return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3]; default: return undefined; } }; function QRBitBuffer() { this.buffer = []; this.length = 0; }
	QRBitBuffer.prototype = {
		get: function (index) { var bufIndex = Math.floor(index / 8); return ((this.buffer[bufIndex] >>> (7 - index % 8)) & 1) == 1; }, put: function (num, length) { for (var i = 0; i < length; i++) { this.putBit(((num >>> (length - i - 1)) & 1) == 1); } }, getLengthInBits: function () { return this.length; }, putBit: function (bit) {
			var bufIndex = Math.floor(this.length / 8); if (this.buffer.length <= bufIndex) { this.buffer.push(0); }
			if (bit) { this.buffer[bufIndex] |= (0x80 >>> (this.length % 8)); }
			this.length++;
		}
	}; var QRCodeLimitLength = [[17, 14, 11, 7], [32, 26, 20, 14], [53, 42, 32, 24], [78, 62, 46, 34], [106, 84, 60, 44], [134, 106, 74, 58], [154, 122, 86, 64], [192, 152, 108, 84], [230, 180, 130, 98], [271, 213, 151, 119], [321, 251, 177, 137], [367, 287, 203, 155], [425, 331, 241, 177], [458, 362, 258, 194], [520, 412, 292, 220], [586, 450, 322, 250], [644, 504, 364, 280], [718, 560, 394, 310], [792, 624, 442, 338], [858, 666, 482, 382], [929, 711, 509, 403], [1003, 779, 565, 439], [1091, 857, 611, 461], [1171, 911, 661, 511], [1273, 997, 715, 535], [1367, 1059, 751, 593], [1465, 1125, 805, 625], [1528, 1190, 868, 658], [1628, 1264, 908, 698], [1732, 1370, 982, 742], [1840, 1452, 1030, 790], [1952, 1538, 1112, 842], [2068, 1628, 1168, 898], [2188, 1722, 1228, 958], [2303, 1809, 1283, 983], [2431, 1911, 1351, 1051], [2563, 1989, 1423, 1093], [2699, 2099, 1499, 1139], [2809, 2213, 1579, 1219], [2953, 2331, 1663, 1273]];

	function _isSupportCanvas() {
		return typeof CanvasRenderingContext2D != "undefined";
	}

	// android 2.x doesn't support Data-URI spec
	function _getAndroid() {
		var android = false;
		var sAgent = navigator.userAgent;

		if (/android/i.test(sAgent)) { // android
			android = true;
			var aMat = sAgent.toString().match(/android ([0-9]\.[0-9])/i);

			if (aMat && aMat[1]) {
				android = parseFloat(aMat[1]);
			}
		}

		return android;
	}

	var svgDrawer = (function () {

		var Drawing = function (el, htOption) {
			this._el = el;
			this._htOption = htOption;
		};

		Drawing.prototype.draw = function (oQRCode) {
			var _htOption = this._htOption;
			var _el = this._el;
			var nCount = oQRCode.getModuleCount();
			var nWidth = Math.floor(_htOption.width / nCount);
			var nHeight = Math.floor(_htOption.height / nCount);

			this.clear();

			function makeSVG(tag, attrs) {
				var el = document.createElementNS('http://www.w3.org/2000/svg', tag);
				for (var k in attrs)
					if (attrs.hasOwnProperty(k)) el.setAttribute(k, attrs[k]);
				return el;
			}

			var svg = makeSVG("svg", { 'viewBox': '0 0 ' + String(nCount) + " " + String(nCount), 'width': '100%', 'height': '100%', 'fill': _htOption.colorLight });
			svg.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:xlink", "http://www.w3.org/1999/xlink");
			_el.appendChild(svg);

			svg.appendChild(makeSVG("rect", { "fill": _htOption.colorLight, "width": "100%", "height": "100%" }));
			svg.appendChild(makeSVG("rect", { "fill": _htOption.colorDark, "width": "1", "height": "1", "id": "template" }));

			for (var row = 0; row < nCount; row++) {
				for (var col = 0; col < nCount; col++) {
					if (oQRCode.isDark(row, col)) {
						var child = makeSVG("use", { "x": String(col), "y": String(row) });
						child.setAttributeNS("http://www.w3.org/1999/xlink", "href", "#template")
						svg.appendChild(child);
					}
				}
			}
		};
		Drawing.prototype.clear = function () {
			while (this._el.hasChildNodes())
				this._el.removeChild(this._el.lastChild);
		};
		return Drawing;
	})();

	var useSVG = document.documentElement.tagName.toLowerCase() === "svg";

	// Drawing in DOM by using Table tag
	var Drawing = useSVG ? svgDrawer : !_isSupportCanvas() ? (function () {
		var Drawing = function (el, htOption) {
			this._el = el;
			this._htOption = htOption;
		};

		/**
		 * Draw the QRCode
		 * 
		 * @param {QRCode} oQRCode
		 */
		Drawing.prototype.draw = function (oQRCode) {
			var _htOption = this._htOption;
			var _el = this._el;
			var nCount = oQRCode.getModuleCount();
			var nWidth = Math.floor(_htOption.width / nCount);
			var nHeight = Math.floor(_htOption.height / nCount);
			var aHTML = ['<table style="border:0;border-collapse:collapse;">'];

			for (var row = 0; row < nCount; row++) {
				aHTML.push('<tr>');

				for (var col = 0; col < nCount; col++) {
					aHTML.push('<td style="border:0;border-collapse:collapse;padding:0;margin:0;width:' + nWidth + 'px;height:' + nHeight + 'px;background-color:' + (oQRCode.isDark(row, col) ? _htOption.colorDark : _htOption.colorLight) + ';"></td>');
				}

				aHTML.push('</tr>');
			}

			aHTML.push('</table>');
			_el.innerHTML = aHTML.join('');

			// Fix the margin values as real size.
			var elTable = _el.childNodes[0];
			var nLeftMarginTable = (_htOption.width - elTable.offsetWidth) / 2;
			var nTopMarginTable = (_htOption.height - elTable.offsetHeight) / 2;

			if (nLeftMarginTable > 0 && nTopMarginTable > 0) {
				elTable.style.margin = nTopMarginTable + "px " + nLeftMarginTable + "px";
			}
		};

		/**
		 * Clear the QRCode
		 */
		Drawing.prototype.clear = function () {
			this._el.innerHTML = '';
		};

		return Drawing;
	})() : (function () { // Drawing in Canvas
		function _onMakeImage() {
			this._elImage.src = this._elCanvas.toDataURL("image/png");
			this._elImage.style.display = "block";
			this._elCanvas.style.display = "none";
		}

		// Android 2.1 bug workaround
		// http://code.google.com/p/android/issues/detail?id=5141
		if (this._android && this._android <= 2.1) {
			var factor = 1 / window.devicePixelRatio;
			var drawImage = CanvasRenderingContext2D.prototype.drawImage;
			CanvasRenderingContext2D.prototype.drawImage = function (image, sx, sy, sw, sh, dx, dy, dw, dh) {
				if (("nodeName" in image) && /img/i.test(image.nodeName)) {
					for (var i = arguments.length - 1; i >= 1; i--) {
						arguments[i] = arguments[i] * factor;
					}
				} else if (typeof dw == "undefined") {
					arguments[1] *= factor;
					arguments[2] *= factor;
					arguments[3] *= factor;
					arguments[4] *= factor;
				}

				drawImage.apply(this, arguments);
			};
		}

		/**
		 * Check whether the user's browser supports Data URI or not
		 * 
		 * @private
		 * @param {Function} fSuccess Occurs if it supports Data URI
		 * @param {Function} fFail Occurs if it doesn't support Data URI
		 */
		function _safeSetDataURI(fSuccess, fFail) {
			var self = this;
			self._fFail = fFail;
			self._fSuccess = fSuccess;

			// Check it just once
			if (self._bSupportDataURI === null) {
				var el = document.createElement("img");
				var fOnError = function () {
					self._bSupportDataURI = false;

					if (self._fFail) {
						self._fFail.call(self);
					}
				};
				var fOnSuccess = function () {
					self._bSupportDataURI = true;

					if (self._fSuccess) {
						self._fSuccess.call(self);
					}
				};

				el.onabort = fOnError;
				el.onerror = fOnError;
				el.onload = fOnSuccess;
				el.src = "data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="; // the Image contains 1px data.
				return;
			} else if (self._bSupportDataURI === true && self._fSuccess) {
				self._fSuccess.call(self);
			} else if (self._bSupportDataURI === false && self._fFail) {
				self._fFail.call(self);
			}
		};

		/**
		 * Drawing QRCode by using canvas
		 * 
		 * @constructor
		 * @param {HTMLElement} el
		 * @param {Object} htOption QRCode Options 
		 */
		var Drawing = function (el, htOption) {
			this._bIsPainted = false;
			this._android = _getAndroid();

			this._htOption = htOption;
			this._elCanvas = document.createElement("canvas");
			this._elCanvas.width = htOption.width;
			this._elCanvas.height = htOption.height;
			el.appendChild(this._elCanvas);
			this._el = el;
			this._oContext = this._elCanvas.getContext("2d");
			this._bIsPainted = false;
			this._elImage = document.createElement("img");
			this._elImage.alt = "Scan me!";
			this._elImage.style.display = "none";
			this._el.appendChild(this._elImage);
			this._bSupportDataURI = null;
		};

		/**
		 * Draw the QRCode
		 * 
		 * @param {QRCode} oQRCode 
		 */
		Drawing.prototype.draw = function (oQRCode) {
			var _elImage = this._elImage;
			var _oContext = this._oContext;
			var _htOption = this._htOption;

			var nCount = oQRCode.getModuleCount();
			var nWidth = _htOption.width / nCount;
			var nHeight = _htOption.height / nCount;
			var nRoundedWidth = Math.round(nWidth);
			var nRoundedHeight = Math.round(nHeight);

			_elImage.style.display = "none";
			this.clear();

			for (var row = 0; row < nCount; row++) {
				for (var col = 0; col < nCount; col++) {
					var bIsDark = oQRCode.isDark(row, col);
					var nLeft = col * nWidth;
					var nTop = row * nHeight;
					_oContext.strokeStyle = bIsDark ? _htOption.colorDark : _htOption.colorLight;
					_oContext.lineWidth = 1;
					_oContext.fillStyle = bIsDark ? _htOption.colorDark : _htOption.colorLight;
					_oContext.fillRect(nLeft, nTop, nWidth, nHeight);

					// 안티 앨리어싱 방지 처리
					_oContext.strokeRect(
						Math.floor(nLeft) + 0.5,
						Math.floor(nTop) + 0.5,
						nRoundedWidth,
						nRoundedHeight
					);

					_oContext.strokeRect(
						Math.ceil(nLeft) - 0.5,
						Math.ceil(nTop) - 0.5,
						nRoundedWidth,
						nRoundedHeight
					);
				}
			}

			this._bIsPainted = true;
		};

		/**
		 * Make the image from Canvas if the browser supports Data URI.
		 */
		Drawing.prototype.makeImage = function () {
			if (this._bIsPainted) {
				_safeSetDataURI.call(this, _onMakeImage);
			}
		};

		/**
		 * Return whether the QRCode is painted or not
		 * 
		 * @return {Boolean}
		 */
		Drawing.prototype.isPainted = function () {
			return this._bIsPainted;
		};

		/**
		 * Clear the QRCode
		 */
		Drawing.prototype.clear = function () {
			this._oContext.clearRect(0, 0, this._elCanvas.width, this._elCanvas.height);
			this._bIsPainted = false;
		};

		/**
		 * @private
		 * @param {Number} nNumber
		 */
		Drawing.prototype.round = function (nNumber) {
			if (!nNumber) {
				return nNumber;
			}

			return Math.floor(nNumber * 1000) / 1000;
		};

		return Drawing;
	})();

	/**
	 * Get the type by string length
	 * 
	 * @private
	 * @param {String} sText
	 * @param {Number} nCorrectLevel
	 * @return {Number} type
	 */
	function _getTypeNumber(sText, nCorrectLevel) {
		var nType = 1;
		var length = _getUTF8Length(sText);

		for (var i = 0, len = QRCodeLimitLength.length; i <= len; i++) {
			var nLimit = 0;

			switch (nCorrectLevel) {
				case QRErrorCorrectLevel.L:
					nLimit = QRCodeLimitLength[i][0];
					break;
				case QRErrorCorrectLevel.M:
					nLimit = QRCodeLimitLength[i][1];
					break;
				case QRErrorCorrectLevel.Q:
					nLimit = QRCodeLimitLength[i][2];
					break;
				case QRErrorCorrectLevel.H:
					nLimit = QRCodeLimitLength[i][3];
					break;
			}

			if (length <= nLimit) {
				break;
			} else {
				nType++;
			}
		}

		if (nType > QRCodeLimitLength.length) {
			throw new Error("Too long data");
		}

		return nType;
	}

	function _getUTF8Length(sText) {
		var replacedText = encodeURI(sText).toString().replace(/\%[0-9a-fA-F]{2}/g, 'a');
		return replacedText.length + (replacedText.length != sText ? 3 : 0);
	}

	/**
	 * @class QRCode
	 * @constructor
	 * @example 
	 * new QRCode(document.getElementById("test"), "http://jindo.dev.naver.com/collie");
	 *
	 * @example
	 * var oQRCode = new QRCode("test", {
	 *    text : "http://naver.com",
	 *    width : 128,
	 *    height : 128
	 * });
	 * 
	 * oQRCode.clear(); // Clear the QRCode.
	 * oQRCode.makeCode("http://map.naver.com"); // Re-create the QRCode.
	 *
	 * @param {HTMLElement|String} el target element or 'id' attribute of element.
	 * @param {Object|String} vOption
	 * @param {String} vOption.text QRCode link data
	 * @param {Number} [vOption.width=256]
	 * @param {Number} [vOption.height=256]
	 * @param {String} [vOption.colorDark="#000000"]
	 * @param {String} [vOption.colorLight="#ffffff"]
	 * @param {QRCode.CorrectLevel} [vOption.correctLevel=QRCode.CorrectLevel.H] [L|M|Q|H] 
	 */
	QRCode = function (el, vOption) {
		this._htOption = {
			width: 256,
			height: 256,
			typeNumber: 4,
			colorDark: "#000000",
			colorLight: "#ffffff",
			correctLevel: QRErrorCorrectLevel.H
		};

		if (typeof vOption === 'string') {
			vOption = {
				text: vOption
			};
		}

		// Overwrites options
		if (vOption) {
			for (var i in vOption) {
				this._htOption[i] = vOption[i];
			}
		}

		if (typeof el == "string") {
			el = document.getElementById(el);
		}

		if (this._htOption.useSVG) {
			Drawing = svgDrawer;
		}

		this._android = _getAndroid();
		this._el = el;
		this._oQRCode = null;
		this._oDrawing = new Drawing(this._el, this._htOption);

		if (this._htOption.text) {
			this.makeCode(this._htOption.text);
		}
	};

	/**
	 * Make the QRCode
	 * 
	 * @param {String} sText link data
	 */
	QRCode.prototype.makeCode = function (sText) {
		this._oQRCode = new QRCodeModel(_getTypeNumber(sText, this._htOption.correctLevel), this._htOption.correctLevel);
		this._oQRCode.addData(sText);
		this._oQRCode.make();
		this._el.title = sText;
		this._oDrawing.draw(this._oQRCode);
		this.makeImage();
	};

	/**
	 * Make the Image from Canvas element
	 * - It occurs automatically
	 * - Android below 3 doesn't support Data-URI spec.
	 * 
	 * @private
	 */
	QRCode.prototype.makeImage = function () {
		if (typeof this._oDrawing.makeImage == "function" && (!this._android || this._android >= 3)) {
			this._oDrawing.makeImage();
		}
	};

	/**
	 * Clear the QRCode
	 */
	QRCode.prototype.clear = function () {
		this._oDrawing.clear();
	};

	/**
	 * @name QRCode.CorrectLevel
	 */
	QRCode.CorrectLevel = QRErrorCorrectLevel;
})();

if (typeof module != "undefined") {
	module.exports = QRCode;
}