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<title>Code coverage report for Converter.ts</title>
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<a href="index.html">All files</a> Converter.ts
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<span class="strong">100% </span>
<span class="quiet">Statements</span>
<span class='fraction'>98/98</span>
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<span class="strong">100% </span>
<span class="quiet">Branches</span>
<span class='fraction'>18/18</span>
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<span class="strong">100% </span>
<span class="quiet">Functions</span>
<span class='fraction'>29/29</span>
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<span class="strong">100% </span>
<span class="quiet">Lines</span>
<span class='fraction'>92/92</span>
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Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block.
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">import { Transform, TransformOptions, Readable } from "stream";
import { CSVParseParam, mergeParams } from "./Parameters";
import { ParseRuntime, initParseRuntime } from "./ParseRuntime";
import P from "bluebird";
import { stringToLines } from "./fileline";
import { map } from "lodash/map";
import { RowSplit, RowSplitResult } from "./rowSplit";
import getEol from "./getEol";
import lineToJson, { JSONResult } from "./lineToJson";
import { Processor, ProcessLineResult } from "./Processor";
import { ProcessorFork } from "./ProcessFork";
import { ProcessorLocal } from "./ProcessorLocal";
import { Result } from "./Result";
import CSVError from "./CSVError";
import { bufFromString } from "./util";
export class Converter extends Transform {
preRawData(onRawData: PreRawDataCallback):Converter {
this.runtime.preRawDataHook = onRawData;
return this;
}
preFileLine(onFileLine: PreFileLineCallback):Converter {
this.runtime.preFileLineHook = onFileLine;
return this;
}
subscribe(
onNext?: (data: any, lineNumber: number) =&gt; void | PromiseLike&lt;void&gt;,
onError?: (err: CSVError) =&gt; void,
onCompleted?: () =&gt; void): Converter {
this.parseRuntime.subscribe = {
onNext,
onError,
onCompleted
}
return this;
}
fromFile(filePath: string, options?: string | CreateReadStreamOption | undefined): Converter {
const fs = require("fs");
// var rs = null;
// this.wrapCallback(cb, function () {
// if (rs &amp;&amp; rs.destroy) {
// rs.destroy();
// }
// });
fs.exists(filePath, (exist) =&gt; {
if (exist) {
const rs = fs.createReadStream(filePath, options);
rs.pipe(this);
} else {
this.emit('error', new Error("File does not exist. Check to make sure the file path to your csv is correct."));
}
});
return this;
}
fromStream(readStream: Readable): Converter {
readStream.pipe(this);
return this;
}
fromString(csvString: string): Converter {
const csv = csvString.toString();
const read = new Readable();
let idx = 0;
read._read = function (size) {
if (idx &gt;= csvString.length) {
this.push(null);
} else {
const str = csvString.substr(idx, size);
this.push(str);
idx += size;
}
}
return this.fromStream(read);
}
then&lt;TResult1 = any[], TResult2 = never&gt;(onfulfilled?: (value: any[]) =&gt; TResult1 | PromiseLike&lt;TResult1&gt;, onrejected?: (reason: any) =&gt; TResult2 | PromiseLike&lt;TResult2&gt;): PromiseLike&lt;TResult1 | TResult2&gt; {
return new P((resolve, reject) =&gt; {
this.parseRuntime.then = {
onfulfilled: (value: any[]) =&gt; {
if (onfulfilled) {
resolve(onfulfilled(value));
} else {
resolve(value as any);
}
},
onrejected: (err: Error) =&gt; {
if (onrejected) {
resolve(onrejected(err));
} else {
reject(err);
}
}
}
});
}
public get parseParam(): CSVParseParam {
return this.params;
}
public get parseRuntime(): ParseRuntime {
return this.runtime;
}
private params: CSVParseParam;
private runtime: ParseRuntime;
private processor: Processor;
private result: Result;
constructor(param?: Partial&lt;CSVParseParam&gt;, public options: TransformOptions = {}) {
super(options);
this.params = mergeParams(param);
this.runtime = initParseRuntime(this);
this.result = new Result(this);
if (this.params.fork) {
this.processor = new ProcessorFork(this);
} else {
this.processor = new ProcessorLocal(this);
}
this.once("error", (err: any) =&gt; {
// console.log("BBB");
setTimeout(() =&gt; {
this.result.processError(err);
this.emit("done", err);
},0);
&nbsp;
});
this.once("done",()=&gt;{
this.processor.destroy();
})
&nbsp;
return this;
}
_transform(chunk: any, encoding: string, cb: Function) {
this.processor.process(chunk)
.then((result) =&gt; {
if (result.length &gt; 0) {
this.runtime.started = true;
return this.result.processResult(result);
}
})
.then(() =&gt; {
this.emit("drained");
cb();
}, (error) =&gt; {
this.runtime.hasError = true;
this.runtime.error = error;
this.emit("error", error);
cb();
});
}
_flush(cb: Function) {
this.processor.flush()
.then((data)=&gt;{
if (data.length&gt;0){
return this.result.processResult(data);
}
})
.then(()=&gt;{
this.processEnd(cb);
},(err)=&gt;{
this.emit("error",err);
cb();
})
}
private processEnd(cb) {
this.result.endProcess();
this.emit("done");
cb();
}
get parsedLineNumber(): number {
return this.runtime.parsedLineNumber;
}
}
export interface CreateReadStreamOption {
flags?: string;
encoding?: string;
fd?: number;
mode?: number;
autoClose?: boolean;
start?: number;
end?: number;
highWaterMark?: number;
}
export type CallBack = (err: Error, data: Array&lt;any&gt;) =&gt; void;
&nbsp;
&nbsp;
export type PreFileLineCallback = (line: string, lineNumber: number) =&gt; string | PromiseLike&lt;string&gt;;
export type PreRawDataCallback = (csvString: string) =&gt; string | PromiseLike&lt;string&gt;;
&nbsp;</pre></td></tr>
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