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https://github.com/swc-project/swc.git
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81 lines
3.2 KiB
TypeScript
81 lines
3.2 KiB
TypeScript
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// Loaded from https://dev.jspm.io/npm:jszip@3.5.0/lib/compressedObject.dew.js
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import { dew as _externalDewDew } from "./external.dew.js";
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import { dew as _DataWorkerDewDew } from "./stream/DataWorker.dew.js";
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import { dew as _DataLengthProbeDewDew } from "./stream/DataLengthProbe.dew.js";
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import { dew as _Crc32ProbeDewDew } from "./stream/Crc32Probe.dew.js";
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var exports = {},
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_dewExec = false;
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export function dew() {
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if (_dewExec) return exports;
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_dewExec = true;
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var external = _externalDewDew();
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var DataWorker = _DataWorkerDewDew();
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var DataLengthProbe = _DataLengthProbeDewDew();
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var Crc32Probe = _Crc32ProbeDewDew();
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var DataLengthProbe = _DataLengthProbeDewDew();
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/**
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* Represent a compressed object, with everything needed to decompress it.
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* @constructor
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* @param {number} compressedSize the size of the data compressed.
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* @param {number} uncompressedSize the size of the data after decompression.
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* @param {number} crc32 the crc32 of the decompressed file.
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* @param {object} compression the type of compression, see lib/compressions.js.
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* @param {String|ArrayBuffer|Uint8Array|Buffer} data the compressed data.
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*/
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function CompressedObject(compressedSize, uncompressedSize, crc32, compression, data) {
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this.compressedSize = compressedSize;
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this.uncompressedSize = uncompressedSize;
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this.crc32 = crc32;
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this.compression = compression;
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this.compressedContent = data;
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}
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CompressedObject.prototype = {
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/**
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* Create a worker to get the uncompressed content.
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* @return {GenericWorker} the worker.
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*/
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getContentWorker: function () {
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var worker = new DataWorker(external.Promise.resolve(this.compressedContent)).pipe(this.compression.uncompressWorker()).pipe(new DataLengthProbe("data_length"));
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var that = this;
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worker.on("end", function () {
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if (this.streamInfo['data_length'] !== that.uncompressedSize) {
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throw new Error("Bug : uncompressed data size mismatch");
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}
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});
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return worker;
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},
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/**
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* Create a worker to get the compressed content.
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* @return {GenericWorker} the worker.
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*/
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getCompressedWorker: function () {
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return new DataWorker(external.Promise.resolve(this.compressedContent)).withStreamInfo("compressedSize", this.compressedSize).withStreamInfo("uncompressedSize", this.uncompressedSize).withStreamInfo("crc32", this.crc32).withStreamInfo("compression", this.compression);
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}
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};
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/**
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* Chain the given worker with other workers to compress the content with the
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* given compression.
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* @param {GenericWorker} uncompressedWorker the worker to pipe.
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* @param {Object} compression the compression object.
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* @param {Object} compressionOptions the options to use when compressing.
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* @return {GenericWorker} the new worker compressing the content.
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*/
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CompressedObject.createWorkerFrom = function (uncompressedWorker, compression, compressionOptions) {
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return uncompressedWorker.pipe(new Crc32Probe()).pipe(new DataLengthProbe("uncompressedSize")).pipe(compression.compressWorker(compressionOptions)).pipe(new DataLengthProbe("compressedSize")).withStreamInfo("compression", compression);
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};
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exports = CompressedObject;
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return exports;
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}
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