fix(core): update

ts/00_commitinfo_data.ts

@@ -0,0 +1,8 @@
+/**
+ * autocreated commitinfo by @pushrocks/commitinfo
+ */
+export const commitinfo = {
+  name: '@pushrocks/smartstream',
+  version: '2.0.2',
+  description: 'simplifies access to node streams'
+}

ts/index.ts

@@ -1,107 +1,3 @@
-import * as plugins from './smartstream.plugins.js';
-
-// interfaces
-import { Transform } from 'stream';
-
-export interface IErrorFunction {
-  (err: Error): any;
-}
-
-export interface ICustomEventFunction {
-  (): any;
-}
-
-export interface ICustomEventObject {
-  eventName: string;
-  eventFunction: ICustomEventFunction;
-}
-
-/**
- * class Smartstream handles
- */
-export class Smartstream {
-  private streamArray: Array<plugins.stream.Duplex> = [];
-  private customEventObjectArray: ICustomEventObject[] = [];
-  private streamStartedDeferred = plugins.smartpromise.defer();
-
-  /**
-   * constructor
-   */
-  constructor(streamArrayArg: any[]) {
-    this.streamArray = streamArrayArg;
-  }
-
-  /**
-   * make something with the stream itself
-   */
-  streamStarted(): Promise<any> {
-    return this.streamStartedDeferred.promise;
-  }
-
-  /**
-   * attach listener to custom event
-   */
-  onCustomEvent(eventNameArg: string, eventFunctionArg: ICustomEventFunction) {
-    this.customEventObjectArray.push({
-      eventName: eventNameArg,
-      eventFunction: eventFunctionArg,
-    });
-  }
-
-  /**
-   * run the stream
-   * @returns Promise
-   */
-  run(): Promise<void> {
-    const done = plugins.smartpromise.defer<void>();
-
-    // clone Array
-    const streamExecutionArray: Array<plugins.stream.Duplex> = [];
-    for (const streamItem of this.streamArray) {
-      streamExecutionArray.push(streamItem);
-    }
-
-    // combine the stream
-    let finalStream = null;
-    let firstIteration: boolean = true;
-    for (const stream of streamExecutionArray) {
-      if (firstIteration === true) {
-        finalStream = stream;
-      }
-      stream.on('error', (err) => {
-        done.reject(err);
-      });
-      for (const customEventObject of this.customEventObjectArray) {
-        stream.on(customEventObject.eventName, customEventObject.eventFunction);
-      }
-      if (!firstIteration) {
-        finalStream = finalStream.pipe(stream);
-      }
-      firstIteration = false;
-    }
-
-    this.streamStartedDeferred.resolve();
-
-    finalStream.on('end', () => {
-      done.resolve();
-    });
-    finalStream.on('close', () => {
-      done.resolve();
-    });
-    finalStream.on('finish', () => {
-      done.resolve();
-    });
-    return done.promise;
-  }
-}
-
-export let cleanPipe = () => {
-  return plugins.through2.obj(
-    (file, enc, cb) => {
-      cb();
-    },
-    (cb) => {
-      cb();
-    }
-  );
-};
+export * from './smartstream.classes.streamwrapper.js';
+export * from './smartstream.classes.streamintake.js';
+export * from './smartstream.duplex.js';

ts/smartstream.classes.streamintake.ts

@@ -0,0 +1,66 @@
+import * as plugins from './smartstream.plugins.js';
+
+export class StreamIntake<T> {
+  private signalEndBoolean = false;
+  private chunkStore: T[] = [];
+
+  public pushNextObservable = new plugins.smartrx.ObservableIntake<any>();
+
+  private pushedNextDeferred = plugins.smartpromise.defer();
+
+  private readableStream = plugins.from2.obj(async (size, next) => {
+    // console.log('get next');
+    // execute without backpressure
+    while (this.chunkStore.length > 0) {
+      next(null, this.chunkStore.shift());
+    }
+    if (this.signalEndBoolean) {
+      next(null, null);
+    }
+
+    // lets trigger backpressure handling
+    this.pushNextObservable.push('please push next');
+    await this.pushedNextDeferred.promise;
+    this.pushedNextDeferred = plugins.smartpromise.defer();
+
+    // execute with backpressure
+    while (this.chunkStore.length > 0) {
+      next(null, this.chunkStore.shift());
+    }
+    if (this.signalEndBoolean) {
+      next(null, null);
+    }
+  });
+
+  constructor() {
+    this.pushNextObservable.push('please push next');
+  }
+
+  /**
+   * returns a new style readble stream
+   */
+  public getReadable() {
+    const readable = new plugins.stream.Readable({
+      objectMode: true,
+    });
+    return readable.wrap(this.readableStream);
+  }
+
+  /**
+   * returns an oldstyle readble stream
+   */
+  public getReadableStream() {
+    return this.readableStream;
+  }
+
+  public pushData(chunkData: T) {
+    this.chunkStore.push(chunkData);
+    this.pushedNextDeferred.resolve();
+  }
+
+  public signalEnd() {
+    this.signalEndBoolean = true;
+    this.pushedNextDeferred.resolve();
+    this.pushNextObservable.signalComplete();
+  }
+}

ts/smartstream.classes.streamwrapper.ts

@@ -0,0 +1,107 @@
+import * as plugins from './smartstream.plugins.js';
+
+// interfaces
+import { Transform } from 'stream';
+
+export interface IErrorFunction {
+  (err: Error): any;
+}
+
+export interface ICustomEventFunction {
+  (): any;
+}
+
+export interface ICustomEventObject {
+  eventName: string;
+  eventFunction: ICustomEventFunction;
+}
+
+/**
+ * class Smartstream handles
+ */
+export class StreamWrapper {
+  private streamArray: Array<plugins.stream.Duplex> = [];
+  private customEventObjectArray: ICustomEventObject[] = [];
+  private streamStartedDeferred = plugins.smartpromise.defer();
+
+  /**
+   * constructor
+   */
+  constructor(streamArrayArg: any[]) {
+    this.streamArray = streamArrayArg;
+  }
+
+  /**
+   * make something with the stream itself
+   */
+  streamStarted(): Promise<any> {
+    return this.streamStartedDeferred.promise;
+  }
+
+  /**
+   * attach listener to custom event
+   */
+  onCustomEvent(eventNameArg: string, eventFunctionArg: ICustomEventFunction) {
+    this.customEventObjectArray.push({
+      eventName: eventNameArg,
+      eventFunction: eventFunctionArg,
+    });
+  }
+
+  /**
+   * run the stream
+   * @returns Promise
+   */
+  run(): Promise<void> {
+    const done = plugins.smartpromise.defer<void>();
+
+    // clone Array
+    const streamExecutionArray: Array<plugins.stream.Duplex> = [];
+    for (const streamItem of this.streamArray) {
+      streamExecutionArray.push(streamItem);
+    }
+
+    // combine the stream
+    let finalStream = null;
+    let firstIteration: boolean = true;
+    for (const stream of streamExecutionArray) {
+      if (firstIteration === true) {
+        finalStream = stream;
+      }
+      stream.on('error', (err) => {
+        done.reject(err);
+      });
+      for (const customEventObject of this.customEventObjectArray) {
+        stream.on(customEventObject.eventName, customEventObject.eventFunction);
+      }
+      if (!firstIteration) {
+        finalStream = finalStream.pipe(stream);
+      }
+      firstIteration = false;
+    }
+
+    this.streamStartedDeferred.resolve();
+
+    finalStream.on('end', () => {
+      done.resolve();
+    });
+    finalStream.on('close', () => {
+      done.resolve();
+    });
+    finalStream.on('finish', () => {
+      done.resolve();
+    });
+    return done.promise;
+  }
+}
+
+export let cleanPipe = () => {
+  return plugins.through2.obj(
+    (file, enc, cb) => {
+      cb();
+    },
+    (cb) => {
+      cb();
+    }
+  );
+};

ts/smartstream.duplex.ts

@@ -0,0 +1,83 @@
+import * as plugins from './smartstream.plugins.js';
+
+export interface ITruncateFunc {
+  (): void;
+}
+
+export interface IPipeMoreFunc {
+  (pipeObject: any): void;
+}
+
+export interface IStreamTools {
+  truncate: ITruncateFunc;
+  pipeMore: IPipeMoreFunc;
+}
+
+export interface IStreamFunction<T, rT> {
+  (chunkArg: T, toolsArg: IStreamTools): Promise<rT>;
+}
+
+export interface IStreamEndFunction<rT> {
+  (toolsArg: IStreamTools): Promise<rT>;
+}
+
+export interface IStreamOptions {
+  objectMode?: boolean;
+  readableObjectMode?: boolean;
+  writableObjectMode?: boolean;
+}
+
+export let createDuplexStream = <T, rT>(
+  funcArg: IStreamFunction<T, rT>,
+  endFuncArg?: IStreamEndFunction<rT>,
+  optionsArg: IStreamOptions = {
+    objectMode: false,
+    readableObjectMode: true,
+    writableObjectMode: true,
+  }
+) => {
+  return plugins.through2(
+    optionsArg,
+    function (chunk, enc, cb) {
+      let truncated = false;
+      const tools: IStreamTools = {
+        truncate: () => {
+          truncated = true;
+          cb(null, null);
+        },
+        pipeMore: (pipeObject) => {
+          this.push(pipeObject);
+        },
+      };
+      const asyncWrapper = async () => {
+        const resultChunk: rT = await funcArg(chunk, tools);
+        if (!truncated) {
+          cb(null, resultChunk);
+        }
+      };
+      asyncWrapper().catch((err) => {
+        console.log(err);
+      });
+    },
+    function (cb) {
+      const tools: IStreamTools = {
+        truncate: () => {
+          cb();
+        },
+        pipeMore: (pushArg) => {
+          this.push(pushArg);
+        },
+      };
+      const asyncWrapper = async () => {
+        if (endFuncArg) {
+          const result = await endFuncArg(tools);
+          this.push(result);
+        }
+        cb();
+      };
+      asyncWrapper().catch((err) => {
+        console.log(err);
+      });
+    }
+  );
+};

ts/smartstream.plugins.ts

@@ -1,12 +1,16 @@
+// node native
 import * as stream from 'stream';
 
 export { stream };
 
 // pushrocks scope
 import * as smartpromise from '@pushrocks/smartpromise';
-export { smartpromise };
+import * as smartrx from '@pushrocks/smartrx';
+
+export { smartpromise, smartrx };
 
 // thirdparty
-import * as through2 from 'through2';
+import from2 from 'from2';
+import through2 from 'through2';
 
-export { through2 };
+export { from2, through2 };