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Viewing / Editing File: stream.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const stream_1 = require("stream");
const fsStat = require("@nodelib/fs.stat");
const fsWalk = require("@nodelib/fs.walk");
const reader_1 = require("./reader");
class ReaderStream extends reader_1.default {
    constructor() {
        super(...arguments);
        this._walkStream = fsWalk.walkStream;
        this._stat = fsStat.stat;
    }
    dynamic(root, options) {
        return this._walkStream(root, options);
    }
    static(patterns, options) {
        const filepaths = patterns.map(this._getFullEntryPath, this);
        const stream = new stream_1.PassThrough({ objectMode: true });
        stream._write = (index, _enc, done) => {
            return this._getEntry(filepaths[index], patterns[index], options)
                .then((entry) => {
                if (entry !== null && options.entryFilter(entry)) {
                    stream.push(entry);
                }
                if (index === filepaths.length - 1) {
                    stream.end();
                }
                done();
            })
                .catch(done);
        };
        for (let i = 0; i < filepaths.length; i++) {
            stream.write(i);
        }
        return stream;
    }
    _getEntry(filepath, pattern, options) {
        return this._getStat(filepath)
            .then((stats) => this._makeEntry(stats, pattern))
            .catch((error) => {
            if (options.errorFilter(error)) {
                return null;
            }
            throw error;
        });
    }
    _getStat(filepath) {
        return new Promise((resolve, reject) => {
            this._stat(filepath, this._fsStatSettings, (error, stats) => {
                return error === null ? resolve(stats) : reject(error);
            });
        });
    }
}
exports.default = ReaderStream;

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