function NumberComparator::__construct

Parameters

string|null $test A comparison string or null:

Throws

\InvalidArgumentException If the test is not understood

Overrides Comparator::__construct

File

vendor/symfony/finder/Comparator/NumberComparator.php, line 42

Class

NumberComparator

NumberComparator compiles a simple comparison to an anonymous subroutine, which you can call with a value to be tested again.

Namespace

Symfony\Component\Finder\Comparator

Code

public function __construct(?string $test) {
    if (null === $test || !preg_match('#^\\s*(==|!=|[<>]=?)?\\s*([0-9\\.]+)\\s*([kmg]i?)?\\s*$#i', $test, $matches)) {
        throw new \InvalidArgumentException(\sprintf('Don\'t understand "%s" as a number test.', $test ?? 'null'));
    }
    $target = $matches[2];
    if (!is_numeric($target)) {
        throw new \InvalidArgumentException(\sprintf('Invalid number "%s".', $target));
    }
    if (isset($matches[3])) {
        // magnitude
        switch (strtolower($matches[3])) {
            case 'k':
                $target *= 1000;
                break;
            case 'ki':
                $target *= 1024;
                break;
            case 'm':
                $target *= 1000000;
                break;
            case 'mi':
                $target *= 1024 * 1024;
                break;
            case 'g':
                $target *= 1000000000;
                break;
            case 'gi':
                $target *= 1024 * 1024 * 1024;
                break;
        }
    }
    parent::__construct($target, $matches[1] ?: '==');
}