I18n Checker

i18n_checker.dart

import 'dart:io';

void main(List<String> arguments) {
  if (arguments.length < 2) {
    // ignore: avoid_print
    print('Usage: dart i18n_checker.dart <arb_folder> <reference_file>');
    return;
  }

  final arbFolder = arguments[0];
  final referenceFile = arguments[1];

  checkFiles(arbFolder, referenceFile);
}

void checkFiles(String arbFolder, String referenceFile) {
  final referenceContent = File(referenceFile).readAsLinesSync()
    ..removeLast()
    ..removeAt(0);

  final i18nDir = Directory(arbFolder);
  final files = i18nDir.listSync();

  bool mismatchFound = false;

  for (var line in referenceContent) {
    final key = extractKeyFromLine(line);

    for (var fileEntity in files) {
      final file = File(fileEntity.path);
      final found = file.readAsLinesSync().any((line) => line.contains(key));

      if (!found) {
        mismatchFound = true;
        Logger.red.log('⚠️ - Key $key was not found in ${file.path}');
      }
    }
  }

  if (!mismatchFound) {
    Logger.green.log('✅ - No difference detected');
  }
}

String extractKeyFromLine(String line) {
  return line.split(':').first.trim();
}

// From SO: https://stackoverflow.com/a/73988921
enum Logger {
  red('31'),
  green('32'),
  yellow('33');

  final String code;
  const Logger(this.code);

  // ignore: avoid_print
  void log(dynamic text) => print('\x1B[${code}m$text\x1B[0m');
}