Flutter String Localization Automation Script #

This script is a Dart-based command-line tool designed to help automate the process of internationalizing your Flutter application using popular localization packages like localize_and_translate or easy_localization.

It finds hardcoded string literals in your Dart files within a specified folder inside lib, replaces them with localization keys followed by .tr(), and generates an ar.json file where the original English strings serve as both the keys and the values.

Features #

• Scans .dart files within a single folder inside the lib directory, specified by the user during runtime.
• Identifies single-quoted ('...') and double-quoted ("...") string literals.
• Replaces found strings like "Hello World" with 'Hello World'.tr().
• Uses the original string literal content directly as the localization key.
• Generates or updates ar.json with entries like "Hello World": "Hello World".
• Adds the correct import statement (localize_and_translate or easy_localization) to modified files if missing, based on user selection.
• Skips strings on import lines, empty strings, strings containing '/', and strings already followed by .tr().

Prerequisites #

• Dart SDK installed.
• A Flutter project where you want to apply localization.
• You are using either the localize_and_translate or easy_localization package in your project.
• The script file (your_script_name.dart) placed in your project directory (e.g., at the root or in a tool/ folder).

Installation #

1. Save the provided Dart script code into a file (e.g., auto_localize.dart) within your Flutter project directory (e.g., project root, or a tool/ subdirectory).

Configuration #

Open the script file (auto_localize.dart) and modify the constants at the top if needed:

• searchDir: The base directory to look for the user-specified folder within (defaults to 'lib').
• enJsonFile: The name of the output JSON file (defaults to 'ar.json'). This file will be created/updated in the directory where you run the script (usually the project root).

// --- Configuration ---
const String searchDir = 'lib';
// The output file for the English localization keys and values.
const String enJsonFile = 'ar.json';
// ----------------------