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Diffstat (limited to 'vendor/symfony/finder/Comparator/NumberComparator.php')
-rw-r--r-- | vendor/symfony/finder/Comparator/NumberComparator.php | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/vendor/symfony/finder/Comparator/NumberComparator.php b/vendor/symfony/finder/Comparator/NumberComparator.php new file mode 100644 index 00000000..f62c0e57 --- /dev/null +++ b/vendor/symfony/finder/Comparator/NumberComparator.php @@ -0,0 +1,79 @@ +<?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|int $test A comparison string or an integer + * + * @throws \InvalidArgumentException If the test is not understood + */ + public function __construct($test) + { + if (!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)); + } + + $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; + } + } + + $this->setTarget($target); + $this->setOperator(isset($matches[1]) ? $matches[1] : '=='); + } +} |