106 lines
3.5 KiB
PHP
106 lines
3.5 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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/**
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* Doctrine_FileFinder_NumberCompare
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*
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* Numeric comparisons.
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*
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* Doctrine_FileFinder_NumberCompare compiles a simple comparison to an anonymous
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* subroutine, which you can call with a value to be tested again.
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*
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* Now this would be very pointless, if Doctrine_FileFinder_NumberCompare didn't understand
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* magnitudes.
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*
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* The target value may use magnitudes of kilobytes (k, ki),
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* megabytes (m, mi), or gigabytes (g, gi). Those suffixed
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* with an i use the appropriate 2**n version in accordance with the
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* IEC standard: http://physics.nist.gov/cuu/Units/binary.html
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*
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* based on perl Number::Compare module.
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*
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* @package Doctrine
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* @subpackage FileFinder
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* @author Fabien Potencier <fabien.potencier@gmail.com> php port
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* @author Richard Clamp <richardc@unixbeard.net> perl version
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* @copyright 2004-2005 Fabien Potencier <fabien.potencier@gmail.com>
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* @copyright 2002 Richard Clamp <richardc@unixbeard.net>
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* @see http://physics.nist.gov/cuu/Units/binary.html
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* @version SVN: $Id: Doctrine_FileFinder.class.php 5110 2007-09-15 12:07:18Z fabien $
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*/
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class Doctrine_FileFinder_NumberCompare
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{
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protected $test = '';
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public function __construct($test)
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{
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$this->test = $test;
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}
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public function test($number)
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{
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if ( ! preg_match('{^([<>]=?)?(.*?)([kmg]i?)?$}i', $this->test, $matches)) {
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throw new Doctrine_Exception(sprintf('don\'t understand "%s" as a test.', $this->test));
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}
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$target = array_key_exists(2, $matches) ? $matches[2] : '';
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$magnitude = array_key_exists(3, $matches) ? $matches[3] : '';
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if (strtolower($magnitude) == 'k') {
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$target *= 1000;
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}
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if (strtolower($magnitude) == 'ki') {
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$target *= 1024;
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}
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if (strtolower($magnitude) == 'm') {
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$target *= 1000000;
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}
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if (strtolower($magnitude) == 'mi') {
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$target *= 1024*1024;
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}
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if (strtolower($magnitude) == 'g') {
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$target *= 1000000000;
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}
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if (strtolower($magnitude) == 'gi') {
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$target *= 1024*1024*1024;
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}
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$comparison = array_key_exists(1, $matches) ? $matches[1] : '==';
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if ($comparison == '==' || $comparison == '') {
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return ($number == $target);
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} else if ($comparison == '>') {
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return ($number > $target);
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} else if ($comparison == '>=') {
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return ($number >= $target);
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} else if ($comparison == '<') {
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return ($number < $target);
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} else if ($comparison == '<=') {
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return ($number <= $target);
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}
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return false;
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}
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} |