@ezs/basics/lib/txt-zip.js

Basics statements for EZS

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = TXTZip;
var _zlib = _interopRequireDefault(require("zlib"));
var _stream = require("stream");
var _streamWrite = _interopRequireDefault(require("stream-write"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
 * Take a `String` and zip it.
 *
 * Uses [gzip](https://fr.wikipedia.org/wiki/Gzip)
 * algorithm to compress strings.
 *
 * @name TXTZip
 * @param {Boolean} [unzip=false] to Unzip input
 * @returns {Buffer}
 */
function TXTZip(data, feed) {
  const unzip = this.getParam('unzip', false);
  if (this.isFirst()) {
    this.input = new _stream.PassThrough();
    const z = unzip ? _zlib.default.createGunzip() : _zlib.default.createGzip();
    this.whenFinish = feed.flow(this.input.pipe(z));
  }
  if (this.isLast()) {
    this.whenFinish.finally(() => feed.close());
    return this.input.end();
  }
  (0, _streamWrite.default)(this.input, data, () => feed.end());
}