comparison vendor/symfony/finder/Comparator/NumberComparator.php @ 0:4c8ae668cc8c

Initial import (non-working)

+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * 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 <[e-mail]> PHP port
+ * @author    Richard Clamp <[e-mail]> Perl version
+ * @copyright 2004-2005 Fabien Potencier <[e-mail]>
+ * @copyright 2002 Richard Clamp <[e-mail]>
+ *
+ * @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] : '==');
+    }
+}