1
0
mirror of synced 2024-12-14 23:26:04 +03:00
doctrine2/lib/Doctrine/FileFinder/NumberCompare.php

106 lines
3.5 KiB
PHP
Raw Normal View History

2007-11-28 06:22:09 +03:00
<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.com>.
*/
/**
* Doctrine_FileFinder_NumberCompare
*
* Numeric comparisons.
*
* Doctrine_FileFinder_NumberCompare 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 Doctrine_FileFinder_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 perl Number::Compare module.
*
* @package Doctrine
* @subpackage FileFinder
* @author Fabien Potencier <fabien.potencier@gmail.com> php port
* @author Richard Clamp <richardc@unixbeard.net> perl version
* @copyright 2004-2005 Fabien Potencier <fabien.potencier@gmail.com>
* @copyright 2002 Richard Clamp <richardc@unixbeard.net>
* @see http://physics.nist.gov/cuu/Units/binary.html
* @version SVN: $Id: Doctrine_FileFinder.class.php 5110 2007-09-15 12:07:18Z fabien $
*/
class Doctrine_FileFinder_NumberCompare
{
protected $test = '';
public function __construct($test)
{
$this->test = $test;
}
public function test($number)
{
if ( ! preg_match('{^([<>]=?)?(.*?)([kmg]i?)?$}i', $this->test, $matches)) {
throw new Doctrine_Exception(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;
}
}