1. /**
  2. * Parses log stream arguments with sanity checks.
  3. *
  4. * @param {string[]} args Array of command-line arguments.
  5. * @returns {object} An object containing parsed arguments and error information.
  6. */
  7. function parseLogStreamArgs(args) {
  8. const parsedArgs = {};
  9. let errors = [];
  11. // Basic argument parsing with type validation
  12. if (args.length < 2) {
  13. errors.push("Missing required arguments: <log_file> <level>");
  14. return { parsedArgs: null, errors };
  15. }
  17. const logFile = args[0];
  18. const level = args[1];
  19. let format = "default";
  21. // Validate log file
  22. if (!logFile || typeof logFile !== 'string') {
  23. errors.push("Invalid log file path.");
  24. return { parsedArgs: null, errors };
  25. }
  27. // Validate log level
  28. const validLevels = ["debug", "info", "warn", "error", "critical"];
  29. if (!validLevels.includes(level.toLowerCase())) {
  30. errors.push(`Invalid log level. Valid levels are: ${validLevels.join(", ")}`);
  31. return { parsedArgs: null, errors };
  32. }
  33. parsedArgs.logFile = logFile;
  34. parsedArgs.level = level.toLowerCase();
  36. //Optional format argument
  37. if(args.length > 2){
  38. format = args[2];
  39. if(format !== "json" && format !== "text"){
  40. errors.push("Invalid format. Valid formats are 'json' and 'text'.");
  41. return {parsedArgs: null, errors};
  42. }
  43. parsedArgs.format = format;
  44. }
  46. return { parsedArgs, errors };
  47. }

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