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07c3cdd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | <?php
/**
* @package pake
* @author Fabien Potencier <fabien.potencier@symfony-project.com> php port
* @author Richard Clamp <richardc@unixbeard.net> perl version
* @copyright 2004-2005 Fabien Potencier <fabien.potencier@symfony-project.com>
* @copyright 2002 Richard Clamp <richardc@unixbeard.net>
* @license see the LICENSE file included in the distribution
* @version SVN: $Id: pakeNumberCompare.class.php 1791 2006-08-23 21:17:06Z fabien $
*/
if (class_exists('pakeNumberCompare'))
{
return;
}
/**
*
* Numeric comparisons.
*
* sfNumberCompare 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 sfNumberCompare didn't understand
* magnitudes.
* The target value may use magnitudes of kilobytes (C<k>, C<ki>),
* megabytes (C<m>, C<mi>), or gigabytes (C<g>, C<gi>). Those suffixed
* with an C<i> use the appropriate 2**n version in accordance with the
* IEC standard: http://physics.nist.gov/cuu/Units/binary.html
*
* based on perl Number::Compare module.
*
* @package pake
* @author Fabien Potencier <fabien.potencier@symfony-project.com> php port
* @author Richard Clamp <richardc@unixbeard.net> perl version
* @copyright 2004-2005 Fabien Potencier <fabien.potencier@symfony-project.com>
* @copyright 2002 Richard Clamp <richardc@unixbeard.net>
* @see http://physics.nist.gov/cuu/Units/binary.html
* @license see the LICENSE file included in the distribution
* @version SVN: $Id: pakeNumberCompare.class.php 1791 2006-08-23 21:17:06Z fabien $
*/
class pakeNumberCompare
{
private $test = '';
public function __construct($test)
{
$this->test = $test;
}
public function test($number)
{
if (!preg_match('{^([<>]=?)?(.*?)([kmg]i?)?$}i', $this->test, $matches))
{
throw new pakeException(sprintf('Don\'t understand "%s" as a test.', $this->test));
}
$target = array_key_exists(2, $matches) ? $matches[2] : '';
$magnitude = array_key_exists(3, $matches) ? $matches[3] : '';
if (strtolower($magnitude) == 'k') $target *= 1000;
if (strtolower($magnitude) == 'ki') $target *= 1024;
if (strtolower($magnitude) == 'm') $target *= 1000000;
if (strtolower($magnitude) == 'mi') $target *= 1024*1024;
if (strtolower($magnitude) == 'g') $target *= 1000000000;
if (strtolower($magnitude) == 'gi') $target *= 1024*1024*1024;
$comparison = array_key_exists(1, $matches) ? $matches[1] : '==';
if ($comparison == '==' || $comparison == '')
{
return ($number == $target);
}
else if ($comparison == '>')
{
return ($number > $target);
}
else if ($comparison == '>=')
{
return ($number >= $target);
}
else if ($comparison == '<')
{
return ($number < $target);
}
else if ($comparison == '<=')
{
return ($number <= $target);
}
return false;
}
}
/*
=head1 SYNOPSIS
Number::Compare->new(">1Ki")->test(1025); # is 1025 > 1024
my $c = Number::Compare->new(">1M");
$c->(1_200_000); # slightly terser invocation
=head1 DESCRIPTION
=head1 METHODS
=head2 ->new( $test )
Returns a new object that compares the specified test.
=head2 ->test( $value )
A longhanded version of $compare->( $value ). Predates blessed
subroutine reference implementation.
=head2 ->parse_to_perl( $test )
Returns a perl code fragment equivalent to the test.
*/
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