Castor function to check licenses used on the project

castor.php

<?php

declare(strict_types=1);

use Castor\Attribute\AsOption;
use Castor\Attribute\AsTask;
use function Castor\io;
use function Castor\run;

/**
 * @param array<string> $allowedLicenses
 */
#[AsTask(description: 'Check licenses')]
function checkLicenses(
    #[AsOption(description: 'Allowed licenses.')]
    array $allowedLicenses = ['Apache-2.0', 'BSD-2-Clause', 'BSD-3-Clause', 'ISC', 'MIT', 'MPL-2.0', 'OSL-3.0']
): void {
    io()->title('Checking licenses');
    $command = ['composer', 'licenses', '-f', 'json'];
    $environment = [
        'XDEBUG_MODE' => 'off',
    ];
    $result = run($command, environment: $environment, quiet: true);
    if (! $result->isSuccessful()) {
        io()->error('Cannot determine licenses');
        exit(1);
    }
    $licenses = json_decode($result->getOutput(), true);
    $disallowed = array_filter(
        $licenses['dependencies'],
        static fn (array $info, $name) => count(array_diff($info['license'], $allowedLicenses)) === 1,
        \ARRAY_FILTER_USE_BOTH
    );
    $allowed = array_filter(
        $licenses['dependencies'],
        static fn (array $info, $name) => count(array_diff($info['license'], $allowedLicenses)) === 0,
        \ARRAY_FILTER_USE_BOTH
    );
    if (count($disallowed) > 0) {
        io()
            ->table(
                ['Package', 'License'],
                array_map(
                    static fn ($name, $info) => [$name, implode(', ', $info['license'])],
                    array_keys($disallowed),
                    $disallowed
                )
            );
        io()
            ->error('Disallowed licenses found');
        exit(1);
    }
    io()
        ->table(
            ['Package', 'License'],
            array_map(
                static fn ($name, $info) => [$name, implode(', ', $info['license'])],
                array_keys($allowed),
                $allowed
            )
        );
    io()
        ->success('All licenses are allowed');
}

Awesome 👍 Thanks a lot for sharing.