fast-extract/dist/esm/streams/transforms/EntryProgress.js

Extract contents from various archive types (tar, tar.bz2, tar.gz, tar.xz, tgz, zip)

import { Transform } from 'extract-base-iterator';
import throttle from 'lodash.throttle';
let EntryProgressTransform = class EntryProgressTransform extends Transform {
    _transform(entry, encoding, callback) {
        if (this.progress) this.progress(entry);
        this.push(entry, encoding);
        callback();
    }
    _flush(callback) {
        if (this.progress) {
            const p = this.progress;
            this.progress = null;
            p(null);
            const throttled = p;
            if (throttled.cancel) throttled.cancel();
        }
        callback();
    }
    constructor(options){
        options = options ? {
            ...options,
            objectMode: true
        } : {
            objectMode: true
        };
        super(options), this.progress = null;
        const internalOptions = options;
        let done = false;
        const progressFn = function progressFn(entry) {
            if (done) return; // throttle can call after done
            if (!entry) {
                done = true;
                return done;
            }
            if (internalOptions.progress) internalOptions.progress({
                ...entry,
                progress: 'extract'
            });
            return undefined;
        };
        const time = internalOptions.time;
        this.progress = time !== undefined ? throttle(progressFn, time, {
            leading: true
        }) : progressFn;
    }
};
export { EntryProgressTransform as default };