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qrcode.min.js

qrcode.min.js 14 KB
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  1. //---------------------------------------------------------------------
    2. 

  2. // QRCode for JavaScript
    3. 

  3. //
    4. 

  4. // Copyright (c) 2009 Kazuhiko Arase
    5. 

  5. //
    6. 

  6. // URL: http://www.d-project.com/
    7. 

  7. //
    8. 

  8. // Licensed under the MIT license:
    9. 

  9. //   http://www.opensource.org/licenses/mit-license.php
    10. 

  10. //
    11. 

  11. // The word "QR Code" is registered trademark of 
    12. 

  12. // DENSO WAVE INCORPORATED
    13. 

  13. //   http://www.denso-wave.com/qrcode/faqpatent-e.html
    14. 

  14. //
    15. 

  15. //---------------------------------------------------------------------
    16. 

  16. function QR8bitByte(t){this.mode=QRMode.MODE_8BIT_BYTE,this.data=t}function QRCode(t,e){this.typeNumber=t,this.errorCorrectLevel=e,this.modules=null,this.moduleCount=0,this.dataCache=null,this.dataList=new Array}QR8bitByte.prototype={getLength:function(t){return this.data.length},write:function(t){for(var e=0;e<this.data.length;e++)t.put(this.data.charCodeAt(e),8)}},QRCode.prototype={addData:function(t){var e=new QR8bitByte(t);this.dataList.push(e),this.dataCache=null},isDark:function(t,e){if(t<0||this.moduleCount<=t||e<0||this.moduleCount<=e)throw new Error(t+","+e);return this.modules[t][e]},getModuleCount:function(){return this.moduleCount},make:function(){if(this.typeNumber<1){var t=1;for(t=1;t<40;t++){for(var e=QRRSBlock.getRSBlocks(t,this.errorCorrectLevel),r=new QRBitBuffer,o=0,n=0;n<e.length;n++)o+=e[n].dataCount;for(n=0;n<this.dataList.length;n++){var i=this.dataList[n];r.put(i.mode,4),r.put(i.getLength(),QRUtil.getLengthInBits(i.mode,t)),i.write(r)}if(r.getLengthInBits()<=8*o)break}this.typeNumber=t}this.makeImpl(!1,this.getBestMaskPattern())},makeImpl:function(t,e){this.moduleCount=4*this.typeNumber+17,this.modules=new Array(this.moduleCount);for(var r=0;r<this.moduleCount;r++){this.modules[r]=new Array(this.moduleCount);for(var o=0;o<this.moduleCount;o++)this.modules[r][o]=null}this.setupPositionProbePattern(0,0),this.setupPositionProbePattern(this.moduleCount-7,0),this.setupPositionProbePattern(0,this.moduleCount-7),this.setupPositionAdjustPattern(),this.setupTimingPattern(),this.setupTypeInfo(t,e),7<=this.typeNumber&&this.setupTypeNumber(t),null==this.dataCache&&(this.dataCache=QRCode.createData(this.typeNumber,this.errorCorrectLevel,this.dataList)),this.mapData(this.dataCache,e)},setupPositionProbePattern:function(t,e){for(var r=-1;r<=7;r++)if(!(t+r<=-1||this.moduleCount<=t+r))for(var o=-1;o<=7;o++)e+o<=-1||this.moduleCount<=e+o||(this.modules[t+r][e+o]=0<=r&&r<=6&&(0==o||6==o)||0<=o&&o<=6&&(0==r||6==r)||2<=r&&r<=4&&2<=o&&o<=4)},getBestMaskPattern:function(){for(var t=0,e=0,r=0;r<8;r++){this.makeImpl(!0,r);var o=QRUtil.getLostPoint(this);(0==r||o<t)&&(t=o,e=r)}return e},createMovieClip:function(t,e,r){var o=t.createEmptyMovieClip(e,r);this.make();for(var n=0;n<this.modules.length;n++)for(var i=+n,a=0;a<this.modules[n].length;a++){var s=+a;this.modules[n][a]&&(o.beginFill(0,100),o.moveTo(s,i),o.lineTo(1+s,i),o.lineTo(1+s,1+i),o.lineTo(s,1+i),o.endFill())}return o},setupTimingPattern:function(){for(var t=8;t<this.moduleCount-8;t++)null==this.modules[t][6]&&(this.modules[t][6]=t%2==0);for(var e=8;e<this.moduleCount-8;e++)null==this.modules[6][e]&&(this.modules[6][e]=e%2==0)},setupPositionAdjustPattern:function(){for(var t=QRUtil.getPatternPosition(this.typeNumber),e=0;e<t.length;e++)for(var r=0;r<t.length;r++){var o=t[e],n=t[r];if(null==this.modules[o][n])for(var i=-2;i<=2;i++)for(var a=-2;a<=2;a++)this.modules[o+i][n+a]=-2==i||2==i||-2==a||2==a||0==i&&0==a}},setupTypeNumber:function(t){for(var e=QRUtil.getBCHTypeNumber(this.typeNumber),r=0;r<18;r++){var o=!t&&1==(e>>r&1);this.modules[Math.floor(r/3)][r%3+this.moduleCount-8-3]=o}for(r=0;r<18;r++){o=!t&&1==(e>>r&1);this.modules[r%3+this.moduleCount-8-3][Math.floor(r/3)]=o}},setupTypeInfo:function(t,e){for(var r=this.errorCorrectLevel<<3|e,o=QRUtil.getBCHTypeInfo(r),n=0;n<15;n++){var i=!t&&1==(o>>n&1);n<6?this.modules[n][8]=i:n<8?this.modules[n+1][8]=i:this.modules[this.moduleCount-15+n][8]=i}for(n=0;n<15;n++){i=!t&&1==(o>>n&1);n<8?this.modules[8][this.moduleCount-n-1]=i:n<9?this.modules[8][15-n-1+1]=i:this.modules[8][15-n-1]=i}this.modules[this.moduleCount-8][8]=!t},mapData:function(t,e){for(var r=-1,o=this.moduleCount-1,n=7,i=0,a=this.moduleCount-1;0<a;a-=2)for(6==a&&a--;;){for(var s=0;s<2;s++)if(null==this.modules[o][a-s]){var u=!1;i<t.length&&(u=1==(t[i]>>>n&1)),QRUtil.getMask(e,o,a-s)&&(u=!u),this.modules[o][a-s]=u,-1==--n&&(i++,n=7)}if((o+=r)<0||this.moduleCount<=o){o-=r,r=-r;break}}}},QRCode.PAD0=236,QRCode.PAD1=17,QRCode.createData=function(t,e,r){for(var o=QRRSBlock.getRSBlocks(t,e),n=new QRBitBuffer,i=0;i<r.length;i++){var a=r[i];n.put(a.mode,4),n.put(a.getLength(),QRUtil.getLengthInBits(a.mode,t)),a.write(n)}var s=0;for(i=0;i<o.length;i++)s+=o[i].dataCount;if(n.getLengthInBits()>8*s)throw new Error("code length overflow. ("+n.getLengthInBits()+">"+8*s+")");for(n.getLengthInBits()+4<=8*s&&n.put(0,4);n.getLengthInBits()%8!=0;)n.putBit(!1);for(;!(n.getLengthInBits()>=8*s||(n.put(QRCode.PAD0,8),n.getLengthInBits()>=8*s));)n.put(QRCode.PAD1,8);return QRCode.createBytes(n,o)},QRCode.createBytes=function(t,e){for(var r=0,o=0,n=0,i=new Array(e.length),a=new Array(e.length),s=0;s<e.length;s++){var u=e[s].dataCount,h=e[s].totalCount-u;o=Math.max(o,u),n=Math.max(n,h),i[s]=new Array(u);for(var l=0;l<i[s].length;l++)i[s][l]=255&t.buffer[l+r];r+=u;var f=QRUtil.getErrorCorrectPolynomial(h),g=new QRPolynomial(i[s],f.getLength()-1).mod(f);a[s]=new Array(f.getLength()-1);for(l=0;l<a[s].length;l++){var R=l+g.getLength()-a[s].length;a[s][l]=0<=R?g.get(R):0}}var d=0;for(l=0;l<e.length;l++)d+=e[l].totalCount;var c=new Array(d),Q=0;for(l=0;l<o;l++)for(s=0;s<e.length;s++)l<i[s].length&&(c[Q++]=i[s][l]);for(l=0;l<n;l++)for(s=0;s<e.length;s++)l<a[s].length&&(c[Q++]=a[s][l]);return c};for(var QRMode={MODE_NUMBER:1,MODE_ALPHA_NUM:2,MODE_8BIT_BYTE:4,MODE_KANJI:8},QRErrorCorrectLevel={L:1,M:0,Q:3,H:2},QRMaskPattern={PATTERN000:0,PATTERN001:1,PATTERN010:2,PATTERN011:3,PATTERN100:4,PATTERN101:5,PATTERN110:6,PATTERN111:7},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]],G15:1335,G18:7973,G15_MASK:21522,getBCHTypeInfo:function(t){for(var e=t<<10;0<=QRUtil.getBCHDigit(e)-QRUtil.getBCHDigit(QRUtil.G15);)e^=QRUtil.G15<<QRUtil.getBCHDigit(e)-QRUtil.getBCHDigit(QRUtil.G15);return(t<<10|e)^QRUtil.G15_MASK},getBCHTypeNumber:function(t){for(var e=t<<12;0<=QRUtil.getBCHDigit(e)-QRUtil.getBCHDigit(QRUtil.G18);)e^=QRUtil.G18<<QRUtil.getBCHDigit(e)-QRUtil.getBCHDigit(QRUtil.G18);return t<<12|e},getBCHDigit:function(t){for(var e=0;0!=t;)e++,t>>>=1;return e},getPatternPosition:function(t){return QRUtil.PATTERN_POSITION_TABLE[t-1]},getMask:function(t,e,r){switch(t){case QRMaskPattern.PATTERN000:return(e+r)%2==0;case QRMaskPattern.PATTERN001:return e%2==0;case QRMaskPattern.PATTERN010:return r%3==0;case QRMaskPattern.PATTERN011:return(e+r)%3==0;case QRMaskPattern.PATTERN100:return(Math.floor(e/2)+Math.floor(r/3))%2==0;case QRMaskPattern.PATTERN101:return e*r%2+e*r%3==0;case QRMaskPattern.PATTERN110:return(e*r%2+e*r%3)%2==0;case QRMaskPattern.PATTERN111:return(e*r%3+(e+r)%2)%2==0;default:throw new Error("bad maskPattern:"+t)}},getErrorCorrectPolynomial:function(t){for(var e=new QRPolynomial([1],0),r=0;r<t;r++)e=e.multiply(new QRPolynomial([1,QRMath.gexp(r)],0));return e},getLengthInBits:function(t,e){if(1<=e&&e<10)switch(t){case QRMode.MODE_NUMBER:return 10;case QRMode.MODE_ALPHA_NUM:return 9;case QRMode.MODE_8BIT_BYTE:case QRMode.MODE_KANJI:return 8;default:throw new Error("mode:"+t)}else if(e<27)switch(t){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:"+t)}else{if(!(e<41))throw new Error("type:"+e);switch(t){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:"+t)}}},getLostPoint:function(t){for(var e=t.getModuleCount(),r=0,o=0;o<e;o++)for(var n=0;n<e;n++){for(var i=0,a=t.isDark(o,n),s=-1;s<=1;s++)if(!(o+s<0||e<=o+s))for(var u=-1;u<=1;u++)n+u<0||e<=n+u||0==s&&0==u||a==t.isDark(o+s,n+u)&&i++;5<i&&(r+=3+i-5)}for(o=0;o<e-1;o++)for(n=0;n<e-1;n++){var h=0;t.isDark(o,n)&&h++,t.isDark(o+1,n)&&h++,t.isDark(o,n+1)&&h++,t.isDark(o+1,n+1)&&h++,0!=h&&4!=h||(r+=3)}for(o=0;o<e;o++)for(n=0;n<e-6;n++)t.isDark(o,n)&&!t.isDark(o,n+1)&&t.isDark(o,n+2)&&t.isDark(o,n+3)&&t.isDark(o,n+4)&&!t.isDark(o,n+5)&&t.isDark(o,n+6)&&(r+=40);for(n=0;n<e;n++)for(o=0;o<e-6;o++)t.isDark(o,n)&&!t.isDark(o+1,n)&&t.isDark(o+2,n)&&t.isDark(o+3,n)&&t.isDark(o+4,n)&&!t.isDark(o+5,n)&&t.isDark(o+6,n)&&(r+=40);var l=0;for(n=0;n<e;n++)for(o=0;o<e;o++)t.isDark(o,n)&&l++;return r+=10*(Math.abs(100*l/e/e-50)/5)}},QRMath={glog:function(t){if(t<1)throw new Error("glog("+t+")");return QRMath.LOG_TABLE[t]},gexp:function(t){for(;t<0;)t+=255;for(;256<=t;)t-=255;return QRMath.EXP_TABLE[t]},EXP_TABLE:new Array(256),LOG_TABLE:new Array(256)},i=0;i<8;i++)QRMath.EXP_TABLE[i]=1<<i;for(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(i=0;i<255;i++)QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]]=i;function QRPolynomial(t,e){if(null==t.length)throw new Error(t.length+"/"+e);for(var r=0;r<t.length&&0==t[r];)r++;this.num=new Array(t.length-r+e);for(var o=0;o<t.length-r;o++)this.num[o]=t[o+r]}function QRRSBlock(t,e){this.totalCount=t,this.dataCount=e}function QRBitBuffer(){this.buffer=new Array,this.length=0}QRPolynomial.prototype={get:function(t){return this.num[t]},getLength:function(){return this.num.length},multiply:function(t){for(var e=new Array(this.getLength()+t.getLength()-1),r=0;r<this.getLength();r++)for(var o=0;o<t.getLength();o++)e[r+o]^=QRMath.gexp(QRMath.glog(this.get(r))+QRMath.glog(t.get(o)));return new QRPolynomial(e,0)},mod:function(t){if(this.getLength()-t.getLength()<0)return this;for(var e=QRMath.glog(this.get(0))-QRMath.glog(t.get(0)),r=new Array(this.getLength()),o=0;o<this.getLength();o++)r[o]=this.get(o);for(o=0;o<t.getLength();o++)r[o]^=QRMath.gexp(QRMath.glog(t.get(o))+e);return new QRPolynomial(r,0).mod(t)}},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],[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(t,e){var r=QRRSBlock.getRsBlockTable(t,e);if(null==r)throw new Error("bad rs block @ typeNumber:"+t+"/errorCorrectLevel:"+e);for(var o=r.length/3,n=new Array,i=0;i<o;i++)for(var a=r[3*i+0],s=r[3*i+1],u=r[3*i+2],h=0;h<a;h++)n.push(new QRRSBlock(s,u));return n},QRRSBlock.getRsBlockTable=function(t,e){switch(e){case QRErrorCorrectLevel.L:return QRRSBlock.RS_BLOCK_TABLE[4*(t-1)+0];case QRErrorCorrectLevel.M:return QRRSBlock.RS_BLOCK_TABLE[4*(t-1)+1];case QRErrorCorrectLevel.Q:return QRRSBlock.RS_BLOCK_TABLE[4*(t-1)+2];case QRErrorCorrectLevel.H:return QRRSBlock.RS_BLOCK_TABLE[4*(t-1)+3];default:return}},QRBitBuffer.prototype={get:function(t){var e=Math.floor(t/8);return 1==(this.buffer[e]>>>7-t%8&1)},put:function(t,e){for(var r=0;r<e;r++)this.putBit(1==(t>>>e-r-1&1))},getLengthInBits:function(){return this.length},putBit:function(t){var e=Math.floor(this.length/8);this.buffer.length<=e&&this.buffer.push(0),t&&(this.buffer[e]|=128>>>this.length%8),this.length++}};
    17.