BREAKING CHANGE(core): update
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@@ -1,56 +1,42 @@
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import * as plugins from './smartstream.plugins.js';
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export class StreamIntake<T> {
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export class StreamIntake<T> extends plugins.stream.Readable {
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private signalEndBoolean = false;
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private chunkStore: T[] = [];
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public pushNextObservable = new plugins.smartrx.ObservableIntake<any>();
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private pushedNextDeferred = plugins.smartpromise.defer();
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private readableStream = plugins.from2.obj(async (size, next) => {
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constructor(options?: plugins.stream.ReadableOptions) {
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super({ ...options, objectMode: true }); // Ensure that we are in object mode.
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this.pushNextObservable.push('please push next');
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}
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_read(size: number): void {
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// console.log('get next');
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// execute without backpressure
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while (this.chunkStore.length > 0) {
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next(null, this.chunkStore.shift());
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}
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if (this.signalEndBoolean) {
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next(null, null);
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}
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const pushChunk = (): void => {
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if (this.chunkStore.length > 0) {
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// If push returns false, then we should stop reading
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if (!this.push(this.chunkStore.shift())) {
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return;
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}
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}
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// lets trigger backpressure handling
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this.pushNextObservable.push('please push next');
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await this.pushedNextDeferred.promise;
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this.pushedNextDeferred = plugins.smartpromise.defer();
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if (this.chunkStore.length === 0) {
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if (this.signalEndBoolean) {
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// If we're done, push null to signal the end of the stream
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this.push(null);
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} else {
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// Ask for more data and wait
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this.pushNextObservable.push('please push next');
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this.pushedNextDeferred.promise.then(() => {
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this.pushedNextDeferred = plugins.smartpromise.defer(); // Reset the deferred
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pushChunk(); // Try pushing the next chunk
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});
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}
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}
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};
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// execute with backpressure
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while (this.chunkStore.length > 0) {
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next(null, this.chunkStore.shift());
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}
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if (this.signalEndBoolean) {
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next(null, null);
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}
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});
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constructor() {
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this.pushNextObservable.push('please push next');
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}
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/**
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* returns a new style readble stream
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*/
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public getReadable() {
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const readable = new plugins.stream.Readable({
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objectMode: true,
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});
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return readable.wrap(this.readableStream);
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}
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/**
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* returns an oldstyle readble stream
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*/
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public getReadableStream() {
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return this.readableStream;
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pushChunk();
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}
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public pushData(chunkData: T) {
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