1. const fs = require('fs');
  2. const path = require('path');
  4. /**
  5. * Reads data from a text file and returns it as a string.
  6. * @param {string} filePath The path to the text file.
  7. * @returns {Promise<string>} A promise that resolves with the file content, or rejects with an error.
  8. */
  9. async function readTextFile(filePath) {
  10. return new Promise((resolve, reject) => {
  11. fs.readFile(filePath, 'utf8', (err, data) => {
  12. if (err) {
  13. reject(err);
  14. return;
  15. }
  16. resolve(data);
  17. });
  18. });
  19. }
  22. /**
  23. * Reads data from multiple text files and concatenates them.
  24. * @param {string[]} filePaths An array of paths to the text files.
  25. * @returns {Promise<string>} A promise that resolves with the concatenated content, or rejects with an error.
  26. */
  27. async function readTextFiles(filePaths) {
  28. try {
  29. const fileContents = [];
  30. for (const filePath of filePaths) {
  31. const content = await readTextFile(filePath);
  32. fileContents.push(content);
  33. }
  34. return fileContents.join('\n'); //Join with newline for readability
  35. } catch (error) {
  36. console.error("Error reading files:", error);
  37. throw error; //Re-throw to handle errors upstream
  38. }
  39. }
  41. //Example Usage:
  42. async function main() {
  43. const filePaths = ['data1.txt', 'data2.txt', 'data3.txt']; // Replace with your file paths
  44. try {
  45. const combinedData = await readTextFiles(filePaths);
  46. console.log(combinedData);
  47. } catch (error) {
  48. console.error("Failed to read files:", error);
  49. }
  50. }
  52. //Call the main function
  53. main();

Add your comment