diff options
Diffstat (limited to 'www/wiki/extensions/OATHAuth/modules/qrcode.js')
| -rw-r--r-- | www/wiki/extensions/OATHAuth/modules/qrcode.js | 1237 |
1 files changed, 1237 insertions, 0 deletions
diff --git a/www/wiki/extensions/OATHAuth/modules/qrcode.js b/www/wiki/extensions/OATHAuth/modules/qrcode.js new file mode 100644 index 00000000..7775c90e --- /dev/null +++ b/www/wiki/extensions/OATHAuth/modules/qrcode.js @@ -0,0 +1,1237 @@ +//---------------------------------------------------------------------
+// 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
+//
+//---------------------------------------------------------------------
+
+//---------------------------------------------------------------------
+// QR8bitByte
+//---------------------------------------------------------------------
+
+function QR8bitByte(data) {
+ this.mode = QRMode.MODE_8BIT_BYTE;
+ this.data = data;
+}
+
+QR8bitByte.prototype = {
+
+ getLength : function(buffer) {
+ return this.data.length;
+ },
+
+ write : function(buffer) {
+ for (var i = 0; i < this.data.length; i++) {
+ // not JIS ...
+ buffer.put(this.data.charCodeAt(i), 8);
+ }
+ }
+};
+
+//---------------------------------------------------------------------
+// QRCode
+//---------------------------------------------------------------------
+
+function QRCode(typeNumber, errorCorrectLevel) {
+ this.typeNumber = typeNumber;
+ this.errorCorrectLevel = errorCorrectLevel;
+ this.modules = null;
+ this.moduleCount = 0;
+ this.dataCache = null;
+ this.dataList = new Array();
+}
+
+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 i = 0; i < this.dataList.length; i++) {
+ var data = this.dataList[i];
+ 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 (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);
+
+ // vertical
+ 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;
+ }
+ }
+
+ // horizontal
+ 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;
+ }
+ }
+
+ // 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 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
+ + ")");
+ }
+
+ // 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 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;
+
+}
+
+//---------------------------------------------------------------------
+// QRMode
+//---------------------------------------------------------------------
+
+var QRMode = {
+ MODE_NUMBER : 1 << 0,
+ MODE_ALPHA_NUM : 1 << 1,
+ MODE_8BIT_BYTE : 1 << 2,
+ MODE_KANJI : 1 << 3
+};
+
+//---------------------------------------------------------------------
+// QRErrorCorrectLevel
+//---------------------------------------------------------------------
+
+var QRErrorCorrectLevel = {
+ L : 1,
+ M : 0,
+ Q : 3,
+ H : 2
+};
+
+//---------------------------------------------------------------------
+// QRMaskPattern
+//---------------------------------------------------------------------
+
+var QRMaskPattern = {
+ PATTERN000 : 0,
+ PATTERN001 : 1,
+ PATTERN010 : 2,
+ PATTERN011 : 3,
+ PATTERN100 : 4,
+ PATTERN101 : 5,
+ PATTERN110 : 6,
+ PATTERN111 : 7
+};
+
+//---------------------------------------------------------------------
+// QRUtil
+//---------------------------------------------------------------------
+
+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;
+
+ // LEVEL1
+
+ 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);
+ }
+ }
+ }
+
+ // LEVEL2
+
+ 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;
+ }
+ }
+ }
+
+ // LEVEL3
+
+ 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;
+ }
+ }
+ }
+
+ // LEVEL4
+
+ 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;
+ }
+
+};
+
+
+//---------------------------------------------------------------------
+// QRMath
+//---------------------------------------------------------------------
+
+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;
+}
+
+//---------------------------------------------------------------------
+// QRPolynomial
+//---------------------------------------------------------------------
+
+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);
+ }
+
+ // recursive call
+ return new QRPolynomial(num, 0).mod(e);
+ }
+};
+
+//---------------------------------------------------------------------
+// QRRSBlock
+//---------------------------------------------------------------------
+
+function QRRSBlock(totalCount, dataCount) {
+ this.totalCount = totalCount;
+ this.dataCount = dataCount;
+}
+
+QRRSBlock.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],
+
+ // 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]
+];
+
+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 = new Array();
+
+ 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;
+ }
+}
+
+//---------------------------------------------------------------------
+// QRBitBuffer
+//---------------------------------------------------------------------
+
+function QRBitBuffer() {
+ this.buffer = new Array();
+ 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++;
+ }
+};
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