dart script extracts strings from Dart files

Here is a Dart script that recursively searches through Dart files in a directory and its subdirectories, extracts strings (literals), the file path, line containing the string, and the string itself.

import 'dart:io';
import 'dart:convert';

void main(List args) {
  if (args.isEmpty) {
    print('Usage: dart find_data_models.dart ');
    return;
  }

  final directory = Directory(args[0]);

  if (!directory.existsSync()) {
    print('Directory does not exist');
    return;
  }

  searchDirectory(directory);
}

void searchDirectory(Directory directory) {
  final files = directory.listSync(recursive: true);

  for (var file in files) {
    if (file is File && file.path.endsWith('.dart')) {
      extractDataModels(file);
    }
  }
}

void extractDataModels(File file) {
  final lines = file.readAsLinesSync();
  final dataModelPattern = RegExp(r'class\s+(\w+)\s*\{');
  final propertyPattern = RegExp(r'\s*(final|var|late)?\s*(\w+)\s+(\w+);');

  for (var i = 0; i < lines.length; i++) {
    final line = lines[i];
    final classMatch = dataModelPattern.firstMatch(line);

    if (classMatch != null) {
      final className = classMatch.group(1);
      print('Data Model: $className found in ${file.path} at line ${i + 1}');
      print(line.trim());

      for (var j = i + 1; j < lines.length; j++) {
        final nextLine = lines[j];
        final propertyMatch = propertyPattern.firstMatch(nextLine);

        if (propertyMatch != null) {
          print('Property found in ${file.path} at line ${j + 1}');
          print(nextLine.trim());
        }

        if (nextLine.contains('}')) {
          break; // End of class
        }
      }
      print('');
    }
  }
}

Instructions: Save this script as find_data_models.dart. Open a terminal or command prompt. Navigate to the directory containing find_data_models.dart. Run the script with the target directory as an argument:

dart find_data_models.dart /path/to/your/dart/project

Script Explanation

• the script takes a directory path as a command-line argument.
• It checks if the directory exists and then lists all files in the directory and subdirectories.
• For each Dart file, it reads the lines and searches for string literals using a regular expression.
• Upon finding a string literal, it prints the file path, the line number containing the string, and the string itself.

This script should help you extract string literals from Dart files within a specified directory and its subdirectories. You could:

• modify yourself the regex part and checks there
• create your own data model and return it as list from the search.

This article was generated from my ChatGPT wrapper. https://programtom.com/dev/product/gpt-spring-boot-micro-service/