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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\Finder\Comparator; /* * NumberComparator compiles a simple comparison to an anonymous * subroutine, which you can call with a value to be tested again. * * Now this would be very pointless, if NumberCompare didn't understand * magnitudes. * * The target value may use magnitudes of kilobytes (k, ki), * megabytes (m, mi), or gigabytes (g, gi). Those suffixed * with an i use the appropriate 2*n version in accordance with the IEC standard: http://physics.nist.gov/cuu/Units/binary.html * * Based on the Perl Number::Compare module. * * @author Fabien Potencier <fabien@symfony.com> PHP port * @author Richard Clamp <richardc@unixbeard.net> Perl version * @copyright 2004-2005 Fabien Potencier <fabien@symfony.com> * @copyright 2002 Richard Clamp <richardc@unixbeard.net> * * @see http://physics.nist.gov/cuu/Units/binary.html / class NumberComparator extends Comparator { /* * @param string\|null $test A comparison string or null * * @throws \InvalidArgumentException If the test is not understood / 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] ?: '=='); } }