libarchive.js/src/webworker/worker.js

extract/create archive files in browser/nodejs, libarchive port in wasm

import { ArchiveReader } from "./archive-reader";
import { ArchiveWriter } from "./archive-writer";
import { getWasmModule } from "./wasm-module";

let reader = null;
let writer = null;
let ready = false;

export class LibArchiveWorker {
  constructor(readyCallback) {
    LibArchiveWorker.readyCallback = readyCallback;
    if (ready) {
      setTimeout(() => readyCallback(), 0);
    }
  }

  open(file, cb) {
    reader.open(file).then(() => cb());
  }

  listFiles() {
    let arr = [];
    for (const entry of reader.entries(true)) {
      arr.push(entry);
    }
    return arr;
  }

  extractFiles() {
    let arr = [];
    for (const entry of reader.entries(false)) {
      arr.push(entry);
    }
    return arr;
  }

  extractSingleFile(target) {
    for (const entry of reader.entries(true, target)) {
      if (entry.fileData) {
        return entry;
      }
    }
  }

  hasEncryptedData() {
    return reader.hasEncryptedData();
  }

  usePassword(passphrase) {
    reader.setPassphrase(passphrase);
  }

  setLocale(locale) {
    reader.setLocale(locale);
  }

  writeArchive(files, compression, format, passphrase) {
    return writer.write(files, compression, format, passphrase);
  }

  close() {
    reader.close();
  }
}

getWasmModule((wasmModule) => {
  reader = new ArchiveReader(wasmModule);
  writer = new ArchiveWriter(wasmModule);
  LibArchiveWorker?.readyCallback?.();
  ready = true;
});