class NumberComparator in Database Sanitize 7

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]>

Hierarchy

• class \Symfony\Component\Finder\Comparator\Comparator
  • class \Symfony\Component\Finder\Comparator\NumberComparator

See also

http://physics.nist.gov/cuu/Units/binary.html

4 files declare their use of NumberComparator

Finder.php in vendor/symfony/finder/Finder.php

NumberComparatorTest.php in vendor/symfony/finder/Tests/Comparator/NumberComparatorTest.php

SizeRangeFilterIterator.php in vendor/symfony/finder/Iterator/SizeRangeFilterIterator.php

SizeRangeFilterIteratorTest.php in vendor/symfony/finder/Tests/Iterator/SizeRangeFilterIteratorTest.php

File

vendor/symfony/finder/Comparator/NumberComparator.php, line 35

Namespace

Symfony\Component\Finder\Comparator

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] : '==');
  }

}

Members

Name	Modifiers	Type	Description	Overrides
Comparator::$operator	private	property
Comparator::$target	private	property
Comparator::getOperator	public	function	Gets the comparison operator.
Comparator::getTarget	public	function	Gets the target value.
Comparator::setOperator	public	function	Sets the comparison operator.
Comparator::setTarget	public	function	Sets the target value.
Comparator::test	public	function	Tests against the target.
NumberComparator::__construct	public	function