smartarchive/dist_ts/smartarchive.classes.smartarchive.js
2022-04-04 16:28:40 +02:00

84 lines
6.6 KiB
JavaScript

import * as plugins from './smartarchive.plugins.js';
import * as paths from './smartarchive.paths.js';
import 'tar';
export class SmartArchive {
constructor() { }
/**
* extracts an archive from a given url
*/
async extractArchiveFromUrlToFs(urlArg, targetDir) {
const parsedPath = plugins.path.parse(urlArg);
const uniqueFileName = plugins.smartunique.uni() + parsedPath.ext;
plugins.smartfile.fs.ensureDir(paths.nogitDir); // TODO: totally remove caching needs
const downloadPath = plugins.path.join(paths.nogitDir, uniqueFileName);
const downloadedArchive = (await plugins.smartrequest.getBinary(urlArg)).body;
await plugins.smartfile.memory.toFs(downloadedArchive, downloadPath);
await this.extractArchiveFromFilePathToFs(downloadPath, targetDir);
await plugins.smartfile.fs.remove(downloadPath);
}
/**
* extracts an archive from a given filePath on disk
* @param filePathArg
* @param targetDir
*/
async extractArchiveFromFilePathToFs(filePathArg, targetDir) {
const parsedPath = plugins.path.parse(filePathArg);
switch (parsedPath.ext) {
case '.tgz':
console.log(`detected a .tgz archive`);
await plugins.tar.extract({
file: filePathArg,
cwd: targetDir,
});
break;
}
}
/**
* extracts to Observable
*/
async extractArchiveFromBufferToObservable(bufferArg) {
const intake = new plugins.streamfunction.Intake();
const replaySubject = new plugins.smartrx.rxjs.ReplaySubject();
const readableStream = intake.getReadableStream();
const extractPipeStop = plugins.tarStream.extract();
extractPipeStop.on('entry', (header, stream, next) => {
let fileBuffer;
stream.on('data', (chunkArg) => {
if (!fileBuffer) {
fileBuffer = chunkArg;
}
else {
fileBuffer = Buffer.concat([fileBuffer, chunkArg]);
}
});
stream.on('end', () => {
replaySubject.next(new plugins.smartfile.Smartfile({
base: null,
contentBuffer: fileBuffer,
path: `./${header.name}`
}));
next();
});
stream.resume();
});
extractPipeStop.on('finish', () => {
replaySubject.complete();
});
// lets run the stream
readableStream
.pipe(plugins.gunzipMaybe())
.pipe(extractPipeStop);
intake.pushData(bufferArg);
intake.signalEnd();
return replaySubject;
}
/**
* extracts to Observable
*/
async extractArchiveFromUrlToObservable(urlArg) {
const response = await plugins.smartrequest.getBinary(urlArg);
const replaySubject = this.extractArchiveFromBufferToObservable(response.body);
return replaySubject;
}
}
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