57 lines
2.3 KiB
JavaScript
57 lines
2.3 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const tslib_1 = require("tslib");
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// @ts-ignore
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const tar_stream_1 = tslib_1.__importDefault(require("tar-stream"));
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// @ts-ignore
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const pako_inflate_min_js_1 = require("pako/dist/pako_inflate.min.js");
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exports.dirname = (path) => {
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return path.replace(/\\/g, "/").replace(/\/[^\/]*$/, "");
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};
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exports.extractContents = (wasmFs, binary, to) => {
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let volume = wasmFs.volume;
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return new Promise((resolve, reject) => {
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// We create the "to" directory, in case it doesn't exist
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volume.mkdirpBase(to, 0o777);
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// We receive a tar.gz, we first need to uncompress it.
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let inflatedBinary = pako_inflate_min_js_1.inflate(binary);
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// Now, we get the tar contents
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let extract = tar_stream_1.default.extract();
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extract.on("entry", function (header, stream, next) {
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let fullname = `${to}/${header.name}`;
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const chunks = [];
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stream.on("data", (chunk) => chunks.push(chunk));
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// header is the tar header
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// stream is the content body (might be an empty stream)
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// call next when you are done with this entry
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stream.on("end", function () {
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if (header.type === "file") {
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let contents = Buffer.concat(chunks);
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// console.log(fullname, contents);
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try {
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volume.writeFileSync(fullname, contents);
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}
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catch (e) {
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// The directory is not created yet
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let dir = exports.dirname(fullname);
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volume.mkdirpBase(dir, 0o777);
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volume.writeFileSync(fullname, contents);
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}
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}
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else if (header.type === "directory") {
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volume.mkdirpBase(fullname, 0o777);
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}
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next(); // ready for next entry
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});
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stream.resume(); // just auto drain the stream
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});
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extract.on("finish", () => {
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resolve(extract);
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});
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extract.on("error", (err) => {
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reject(err);
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});
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extract.end(Buffer.from(inflatedBinary));
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});
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};
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