txt-reader.js

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Only utf-8 is supported\");this.encoding=\"utf-8\",this.encode=function(e){if(\"string\"!=typeof e)throw new TypeError(\"passed argument must be of type string\");var t=unescape(encodeURIComponent(e)),r=new Uint8Array(t.length);return t.split(\"\").forEach((function(e,t){r[t]=e.charCodeAt(0)})),r}},TextDecoder:function(e,r){if(t.indexOf(e)<0&&null!=e)throw new RangeError(\"Invalid encoding type. Only utf-8 is supported\");if(this.encoding=\"utf-8\",this.ignoreBOM=!1,this.fatal=void 0!==r&&\"fatal\"in r&&r.fatal,\"boolean\"!=typeof this.fatal)throw new TypeError(\"fatal flag must be boolean\");this.decode=function(e,t){if(void 0===e)return\"\";if(\"boolean\"!=typeof(void 0!==t&&\"stream\"in t&&t.stream))throw new TypeError(\"stream option must be boolean\");if(ArrayBuffer.isView(e)){var r=new Uint8Array(e.buffer),i=new Array(r.length);return r.forEach((function(e,t){i[t]=String.fromCharCode(e)})),decodeURIComponent(escape(i.join(\"\")))}throw new TypeError(\"passed argument must be an array buffer view\")}}}})?i.apply(t,n):i)||(e.exports=s)}).call(this,r(0))},function(e,t,r){\"use strict\";void 0===Uint8Array.prototype.indexOf&&(Uint8Array.prototype.indexOf=function(e){return Array.prototype.indexOf.call(this,e)}),void 0===Uint8Array.prototype.slice&&(Uint8Array.prototype.slice=function(e,t){return new Uint8Array(Array.prototype.slice.call(this,e,t))}),Uint8Array.prototype.forEach||(Uint8Array.prototype.forEach=function(e){var t,r;if(null==this)throw new TypeError(\"this is null or not defined\");var i=Object(this),n=i.length>>>0;if(\"function\"!=typeof e)throw new TypeError(e+\" is not a function\");for(arguments.length>1&&(t=arguments[1]),r=0;r<n;){var s;r in i&&(s=i[r],e.call(t,s,r,i)),r++}})},,,function(module,exports,__webpack_require__){\"use strict\";exports.__esModule=!0;var text_encoding_shim_1=__webpack_require__(2);__webpack_require__(3);var utf8decoder=new text_encoding_shim_1.TextDecoder(\"utf-8\"),DEFAULT_CHUNK_SIZE=104857600,currentTaskId=null,txtReaderWorker=null,sniffWorker=null,verboseLogging=!1,useTransferrable=navigator.userAgent.indexOf(\"Firefox\")>-1,respondMessage=function(e){e.done&&(currentTaskId=null),postMessage.apply(null,[e])},respondTransferrableMessage=function(e,t){e.done&&(currentTaskId=null),postMessage(e,t)},createProgressResponseMessage=function(e){var t=new ResponseMessage(e);return t.done=!1,t},validateWorker=function(){return null!==txtReaderWorker||(respondMessage(new ResponseMessage(!1,\"File has not been loaded into the worker, need to loadFile first.\")),!1)},mergeUint8Array=function(e,t){if(0===e.byteLength)return t;if(0===t.byteLength)return e;var r=new Uint8Array(e.byteLength+t.byteLength);return r.set(e,0),r.set(t,e.byteLength),r},isLineWithinLinesRange=function(e,t){var r=getLinesRangeEnd(t);return e>=t.start&&e<=r},getLinesRangeEnd=function(e){return void 0!==e.count?e.start+e.count-1:e.end},getLinesRangeCount=function(e){return void 0!==e.count?e.count:e.end-e.start+1},getLinesRangeStart=function(e){return\"number\"==typeof e?e:e.start},getStartCountForSporadicLineItem=function(e){return\"number\"==typeof e?{start:e,count:1}:void 0!==e.end?{start:e.start,count:e.end-e.start+1}:e};self.addEventListener(\"message\",(function(e){var t=e.data;if(verboseLogging&&console.log(\"Worker thread received a message from main thread: \\r\\n\",e.data),null!==currentTaskId)throw\"The worker thread is busy.\";switch(currentTaskId=t.taskId,t.action){case\"loadFile\":txtReaderWorker=new TxtReaderWorker(t.data.file,t.data.config);break;case\"enableVerbose\":verboseLogging=!0,respondMessage(new ResponseMessage(!0));break;case\"setChunkSize\":if(\"number\"!=typeof t.data||t.data<1)return void respondMessage(new ResponseMessage(!1,\"Invalid CHUNK_SIZE, must be greater than 1.\"));txtReaderWorker&&(txtReaderWorker.CHUNK_SIZE=t.data),DEFAULT_CHUNK_SIZE=t.data,respondMessage(new ResponseMessage(DEFAULT_CHUNK_SIZE));break;case\"getLines\":validateWorker()&&txtReaderWorker.getLines(t.data.start,t.data.count);break;case\"getSporadicLines\":validateWorker()&&txtReaderWorker.getSporadicLines(t.data.sporadicLinesMap,t.data.decode);break;case\"iterateLines\":validateWorker()&&txtReaderWorker.iterateLines(t.data);break;case\"iterateSporadicLines\":validateWorker()&&txtReaderWorker.iterateSporadicLines(t.data.config,t.data.lines);break;case\"sniffLines\":sniffWorker=new TxtReaderWorker(t.data.file,void 0,{lineNumber:t.data.lineNumber,decode:t.data.decode})}}));var ResponseMessage=function(e,t,r){if(this.taskId=currentTaskId,1===arguments.length)this.success=!0,this.message=\"\",this.result=e;else if(2===arguments.length)switch(typeof e){case\"boolean\":this.success=e,this.message=t,this.result=null;break;default:this.success=!0,this.message=e,this.result=t}else this.success=e,this.message=t,this.result=r;this.done=!0},Iterator=function(){function e(){this.lineView=new Uint8Array(0),this.lastViewEndsWithCR=!1,this.onEachLine=null,this.eachLineScope=null,this.offset=0,this.createMap=!1,this.endOffset=0,this.linesToIterate=0,this.linesProcessed=0,this.currentLineNumber=1,this.startLineNumber=0,this.lastProgress=null,this.processedViewLength=0,this.lineBreakLength=0,this.map=[],this.lastMappedProgress=null,this.sporadicProcessed=0,this.sporadicLinesMap=[],this.isSporadicIterate=!1}return e.prototype.shouldBreak=function(){return!(!this.isPartialIterate()||this.linesProcessed!==this.linesToIterate&&this.sporadicProcessed!==this.linesToIterate)},e.prototype.isPartialIterate=function(){return this.linesToIterate>0},e.prototype.hitLine=function(e){var t=this.isPartialIterate(),r=0;if(!t||t&&this.currentLineNumber>=this.startLineNumber&&!this.isSporadicIterate||this.isSporadicIterate){var i=!1;if(t)if(this.isSporadicIterate){r=Math.round(this.sporadicProcessed/this.linesToIterate*1e4)/100;var n=this.sporadicLinesMap[0];\"number\"==typeof n?n===this.currentLineNumber&&(this.sporadicLinesMap.splice(0,1),i=!0):void 0!==n.count?this.currentLineNumber>=n.start&&this.currentLineNumber<=n.start+n.count-1&&(1===n.count?this.sporadicLinesMap.splice(0,1):(n.start++,n.count--),i=!0):this.currentLineNumber>=n.start&&this.currentLineNumber<=n.end&&(n.start===n.end?this.sporadicLinesMap.splice(0,1):n.start++,i=!0),i&&this.sporadicProcessed++}else this.linesProcessed++,i=!0,r=Math.round(this.linesProcessed/this.linesToIterate*1e4)/100;else if(i=!0,this.linesProcessed++,r=Math.round(this.processedViewLength/this.endOffset*1e4)/100,this.createMap){var s=Math.round(r);(null===this.lastMappedProgress||this.lastMappedProgress<s)&&(this.lastMappedProgress=s,this.map.push({line:this.currentLineNumber,offset:this.processedViewLength}))}this.onEachLineInternal&&i&&(e.buffer.byteLength!=e.byteLength&&(e=new Uint8Array(e)),this.onEachLineInternal.call(this,e)),null!==this.onEachLine&&i&&(e.buffer.byteLength!=e.byteLength&&(e=new Uint8Array(e)),this.onEachLine.call(this.eachLineScope,e,r,this.currentLineNumber))}t&&this.shouldReportProgress(r)&&(this.lastProgress=r,respondMessage(createProgressResponseMessage(r<100?r:100))),this.processedViewLength+=e.length+this.lineBreakLength,this.currentLineNumber++},e.prototype.shouldReportProgress=function(e){return null===this.lastProgress||e-this.lastProgress>5},e.prototype.bindEachLineFromConfig=function(e){this.onEachLine=new Function(\"return \"+e.eachLine)(),null===this.eachLineScope&&(this.eachLineScope=e.scope),this.eachLineScope.decode=function(e){return utf8decoder.decode(e)}},e}(),TxtReaderWorker=function(){function TxtReaderWorker(e,t,r){var i=this;if(\"[object file]\"===Object.prototype.toString.call(e).toLowerCase()){if(this.CHUNK_SIZE=DEFAULT_CHUNK_SIZE,this.file=e,this.lineCount=0,this.quickSearchMap=[],this.fr=new FileReader,this.fr.onload=function(){for(var e=new Uint8Array(i.fr.result),t=i.iterator;e.length>0;){var r=e.indexOf(13),n=e.indexOf(10),s=void 0,o=!1,a=!1;if(r>0&&(-1===n||r<n))r<e.length-1?10===e[r+1]?(s=r,t.lineBreakLength=2):(s=r,t.lineBreakLength=1):(a=!0,o=!0);else if(0===r)e.length>1?10===e[1]?(s=r,t.lineBreakLength=2):(s=r,t.lineBreakLength=1):(a=!0,o=!0);else if(n>0)s=n,t.lineBreakLength=1;else{if(0===n){if(t.lineBreakLength=t.lastViewEndsWithCR?2:1,t.hitLine(t.lastViewEndsWithCR?t.lineView.slice(0,t.lineView.length-1):t.lineView),t.shouldBreak())break;t.lineView=new Uint8Array(0),e=new Uint8Array(i.fr.result,1+e.byteOffset),t.lastViewEndsWithCR=!1;continue}o=!0}if(o){if(t.lastViewEndsWithCR){if(t.lineBreakLength=1,t.hitLine(t.lineView.slice(0,t.lineView.length-1)),t.shouldBreak())break;t.lineView=new Uint8Array(0)}t.lineView=mergeUint8Array(t.lineView,e),t.lastViewEndsWithCR=a;break}if(t.lastViewEndsWithCR){if(t.hitLine(t.lineView.slice(0,t.lineView.length-1)),t.shouldBreak())break;if(t.hitLine(e.slice(0,s)),t.shouldBreak())break;t.lastViewEndsWithCR=!1}else if(t.lineView=mergeUint8Array(t.lineView,e.slice(0,s)),t.hitLine(t.lineView),t.shouldBreak())break;t.lineView=new Uint8Array(0),e=new Uint8Array(i.fr.result,e.byteOffset+s+t.lineBreakLength)}if(!t.isPartialIterate()){var c=Math.round(t.offset/i.file.size*1e4)/100;respondMessage(createProgressResponseMessage(c<100?c:100))}t.lineBreakLength=0,i.iterator.isSporadicIterate?i.seekSporadic():(t.offset+=i.CHUNK_SIZE,i.seek())},this.iterator=new Iterator,this.iterator.createMap=!0,r){if(r.lineNumber<1)return void respondMessage(new ResponseMessage(!1,\"Sniff line number is invalid.\"));this.sniffLines=[],this.iterator.linesToIterate=r.lineNumber,this.iterator.createMap=!1}this.iterator.endOffset=this.file.size,t&&this.iterator.bindEachLineFromConfig(this.stringToFunction(t)),this.iterateLinesInternal((function(e){r?i.sniffLines.push(r.decode?utf8decoder.decode(e):e):i.lineCount++}),(function(){if(r)respondMessage(new ResponseMessage(i.sniffLines)),i.sniffLines=[],delete i.sniffLines,sniffWorker=null;else{i.quickSearchMap=i.iterator.map;var e={lineCount:i.lineCount};t&&(e.scope=i.removeFunctionsFromObject(i.iterator.eachLineScope)),respondMessage(new ResponseMessage(e))}}))}else respondMessage(new ResponseMessage(!1,\"Invalid file object\"))}return TxtReaderWorker.prototype.setPartialIterator=function(e,t){if(e<1||e>this.lineCount)return respondMessage(new ResponseMessage(!1,\"Start line number is invalid\")),!1;if(t<1)return respondMessage(new ResponseMessage(!1,\"Count is invalid\")),!1;var r=e+t-1;r=r>this.lineCount?this.lineCount:r;for(var i=0;i<this.quickSearchMap.length;i++)e>=this.quickSearchMap[i].line&&(i===this.quickSearchMap.length-1||e<this.quickSearchMap[i+1].line)&&(this.iterator.offset=this.quickSearchMap[i].offset,this.iterator.currentLineNumber=this.quickSearchMap[i].line),r<this.quickSearchMap[i].line&&(0===i||r>=this.quickSearchMap[i-1].line)?this.iterator.endOffset=this.quickSearchMap[i].offset:this.iterator.endOffset=this.file.size;return this.iterator.linesToIterate=t,this.iterator.startLineNumber=e,!0},TxtReaderWorker.prototype.iterateLinesInternal=function(e,t){this.iterator.onEachLineInternal=e,t&&(this.iterator.onSeekComplete=t),this.seek()},TxtReaderWorker.prototype._iterateLines=function(e,t,r,i){var n=this;if(this.iterator.offset=0,this.iterator.endOffset=this.file.size,this.iterator.bindEachLineFromConfig(e),this.iterator.onSeekComplete=function(){this.eachLineScope=n.removeFunctionsFromObject(this.eachLineScope),i()},null!==t&&null!==r){if(!this.setPartialIterator(t,r))return;this.seek()}else this.seek()},TxtReaderWorker.prototype.removeFunctionsFromObject=function(e){if(\"object\"==typeof e)for(var t in e)\"function\"==typeof e[t]?delete e[t]:\"object\"==typeof e[t]&&this.removeFunctionsFromObject(e[t]);return e},TxtReaderWorker.prototype.stringToFunction=function(config){var functionMap=config.functionMap;if(functionMap.length)for(var i=0;i<functionMap.length;i++){var functionString=eval(\"config.scope\"+functionMap[i]+\".toString()\");eval(\"config.scope\"+functionMap[i]+\"=\"+functionString)}return config},TxtReaderWorker.prototype.iterateLines=function(e){var t=this,r=this.stringToFunction(e.config);this._iterateLines(r,e.start,e.count,(function(){respondMessage(new ResponseMessage(t.iterator.eachLineScope))}))},TxtReaderWorker.prototype.setSporadicIterator=function(e){e=this.sortAndMergeLineMap(e);for(var t=0,r=0;r<e.length;r++)\"number\"==typeof e[r]?t++:t+=getLinesRangeCount(e[r]);this.iterator.linesToIterate=t,this.iterator.endOffset=this.file.size,this.iterator.isSporadicIterate=!0,this.iterator.sporadicLinesMap=e,this.seekSporadic()},TxtReaderWorker.prototype.getSporadicLines=function(e,t){e=this.sortAndMergeLineMap(e);var r=[];this.iterator.onEachLineInternal=function(e){r.push({lineNumber:this.currentLineNumber,value:t?utf8decoder.decode(e):e})},this.iterator.onSeekComplete=function(){respondMessage(new ResponseMessage(r))},this.setSporadicIterator(e)},TxtReaderWorker.prototype.iterateSporadicLines=function(e,t){t=this.sortAndMergeLineMap(t),e=this.stringToFunction(e);var 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