1. /**
  2. * Converts binary files to different formats for staging environments,
  3. * with fallback logic.
  4. *
  5. * @param {File} file The binary file to convert.
  6. * @param {string} targetFormat The desired target format ('raw', 'gzip', 'bzip2'). Defaults to 'raw'.
  7. * @returns {Promise<ArrayBuffer|null>} A Promise that resolves with the converted ArrayBuffer,
  8. * or null if conversion fails.
  9. */
  10. async function convertBinaryFile(file, targetFormat = 'raw') {
  11. return new Promise((resolve, reject) => {
  12. if (!file) {
  13. console.error("No file provided.");
  14. resolve(null);
  15. return;
  16. }
  18. const reader = new FileReader();
  20. reader.onload = (event) => {
  21. const contents = event.target.result;
  23. try {
  24. switch (targetFormat) {
  25. case 'raw':
  26. resolve(contents);
  27. break;
  28. case 'gzip':
  29. const compressed = pako.gzip(contents); // Requires pako library
  30. resolve(compressed);
  31. break;
  32. case 'bzip2':
  33. const compressed = pako.bzip2(contents); // Requires pako library
  34. resolve(compressed);
  35. break;
  36. default:
  37. console.warn(`Unsupported target format: ${targetFormat}. Falling back to raw.`);
  38. resolve(contents);
  39. }
  40. } catch (error) {
  41. console.error("Conversion error:", error);
  42. resolve(null); // Resolve with null on error
  43. }
  44. };
  46. reader.onerror = (error) => {
  47. console.error("File read error:", error);
  48. resolve(null); // Resolve with null on error
  49. };
  51. reader.readAsArrayBuffer(file); // Read the file as an ArrayBuffer
  52. });
  53. }

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