ykw/cruet

PHP port of the Rust cruet library case conversion functions. Provides camelCase, snake_case, kebab-case, PascalCase and other case transformations.

v1.0.0 2025-09-06 09:10 UTC

Requires

• php: ^8.4

Requires (Dev)

• phpunit/phpunit: ^9.5|^10.0

MIT

• PHP Cruet Contributors

• conversion
• string
• case
• camelcase
• snake_case
• kebab-case
• sentence-case
• title-case
• train-case
• pascalCase
• screaming-snake-case

README

A fast, lightweight PHP library for string case conversions, based on the Rust cruet library.

Provides clean, efficient case conversions with a simple API.

Features

• 5 Case Conversions: camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case
• Format Detection: Identify string formats programmatically
• Fluent Interface: Chain operations for complex transformations
• High Performance: Character-by-character processing with intelligent boundary detection
• No Dependencies: Pure PHP implementation, no external libraries required

Installation

composer require ykw/cruet

Or add to your composer.json:

{
    "require": {
        "ykw/cruet": "^1.0"
    }
}

Quick Start

use Ykw\Cruet\Inflector;

// Case conversions
echo Inflector::toCamelCase('user_account');         // userAccount
echo Inflector::toPascalCase('user_account');        // UserAccount  
echo Inflector::toSnakeCase('UserAccount');          // user_account
echo Inflector::toScreamingSnakeCase('UserAccount'); // USER_ACCOUNT
echo Inflector::toKebabCase('UserAccount');          // user-account

// Format detection
var_dump(Inflector::isCamelCase('userAccount'));     // true
var_dump(Inflector::isPascalCase('UserAccount'));    // true
var_dump(Inflector::isSnakeCase('user_account'));    // true

// Fluent interface
$result = Inflector::convert('user_account')
    ->pascalCase()      // UserAccount
    ->snakeCase()       // user_account
    ->screamingSnakeCase() // USER_ACCOUNT
    ->get();
echo $result; // USER_ACCOUNT

Usage Examples

Case Conversions

use Ykw\Cruet\Inflector;

$input = 'user_profile_settings';

// All available case conversions
echo Inflector::toCamelCase($input);           // userProfileSettings
echo Inflector::toPascalCase($input);          // UserProfileSettings  
echo Inflector::toSnakeCase($input);           // user_profile_settings
echo Inflector::toScreamingSnakeCase($input);  // USER_PROFILE_SETTINGS
echo Inflector::toKebabCase($input);           // user-profile-settings

Format Detection

// Check string formats
var_dump(Inflector::isCamelCase('userAccount'));        // true
var_dump(Inflector::isPascalCase('UserAccount'));       // true
var_dump(Inflector::isSnakeCase('user_account'));       // true
var_dump(Inflector::isScreamingSnakeCase('USER_ACCOUNT')); // true
var_dump(Inflector::isKebabCase('user-account'));       // true

Fluent Interface

Chain multiple operations together:

use Ykw\Cruet\Inflector;

// Complex transformation chains
$result = Inflector::convert('user_account')
    ->pascalCase()       // UserAccount
    ->snakeCase()        // user_account  
    ->screamingSnakeCase() // USER_ACCOUNT
    ->get();

echo $result; // USER_ACCOUNT

// Another example
$result = Inflector::convert('AdminUser')
    ->snakeCase()        // admin_user
    ->kebabCase()        // admin-user
    ->get();
    
echo $result; // admin-user

API Reference

Static Case Conversion Methods

• Inflector::toCamelCase(string $input): string
• Inflector::toPascalCase(string $input): string
• Inflector::toSnakeCase(string $input): string
• Inflector::toScreamingSnakeCase(string $input): string
• Inflector::toKebabCase(string $input): string

Static Format Detection Methods

• Inflector::isCamelCase(string $input): bool
• Inflector::isPascalCase(string $input): bool
• Inflector::isSnakeCase(string $input): bool
• Inflector::isScreamingSnakeCase(string $input): bool
• Inflector::isKebabCase(string $input): bool

Fluent Interface

• Inflector::convert(string $input): Inflector - Create fluent chain
• ->camelCase(): Inflector - Convert to camelCase
• ->pascalCase(): Inflector - Convert to PascalCase
• ->snakeCase(): Inflector - Convert to snake_case
• ->screamingSnakeCase(): Inflector - Convert to SCREAMING_SNAKE_CASE
• ->kebabCase(): Inflector - Convert to kebab-case
• ->get(): string - Get final result

Requirements

• PHP 8.4 or higher
• No external dependencies

Testing

Run the test suite:

composer test

Or run PHPUnit directly:

vendor/bin/phpunit

Generate test coverage:

composer run test-coverage

Code Quality

This project uses Mago for code formatting, linting, and static analysis:

# Format code
mago format

# Run linter
mago lint

# Static analysis
mago analyze

# All quality checks
mago format && mago lint && mago analyze

Code quality checks run automatically via GitHub Actions on every push and pull request.

Contributing

Contributions are welcome! Please ensure:

1. Test Coverage: Add tests for new functionality
2. Documentation: Update README for new features
3. Code Style: Follow PSR-12 coding standards

License

MIT License - see LICENSE file for details.

Credits

Based on the Rust cruet library by Chris Learn.