Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of composer/semver.
Chris@0:  *
Chris@0:  * (c) Composer <https://github.com/composer>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view
Chris@0:  * the LICENSE file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Composer\Semver;
Chris@0: 
Chris@0: use Composer\Semver\Constraint\Constraint;
Chris@0: 
Chris@0: class Comparator
Chris@0: {
Chris@0:     /**
Chris@0:      * Evaluates the expression: $version1 > $version2.
Chris@0:      *
Chris@0:      * @param string $version1
Chris@0:      * @param string $version2
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public static function greaterThan($version1, $version2)
Chris@0:     {
Chris@0:         return self::compare($version1, '>', $version2);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Evaluates the expression: $version1 >= $version2.
Chris@0:      *
Chris@0:      * @param string $version1
Chris@0:      * @param string $version2
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public static function greaterThanOrEqualTo($version1, $version2)
Chris@0:     {
Chris@0:         return self::compare($version1, '>=', $version2);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Evaluates the expression: $version1 < $version2.
Chris@0:      *
Chris@0:      * @param string $version1
Chris@0:      * @param string $version2
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public static function lessThan($version1, $version2)
Chris@0:     {
Chris@0:         return self::compare($version1, '<', $version2);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Evaluates the expression: $version1 <= $version2.
Chris@0:      *
Chris@0:      * @param string $version1
Chris@0:      * @param string $version2
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public static function lessThanOrEqualTo($version1, $version2)
Chris@0:     {
Chris@0:         return self::compare($version1, '<=', $version2);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Evaluates the expression: $version1 == $version2.
Chris@0:      *
Chris@0:      * @param string $version1
Chris@0:      * @param string $version2
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public static function equalTo($version1, $version2)
Chris@0:     {
Chris@0:         return self::compare($version1, '==', $version2);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Evaluates the expression: $version1 != $version2.
Chris@0:      *
Chris@0:      * @param string $version1
Chris@0:      * @param string $version2
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public static function notEqualTo($version1, $version2)
Chris@0:     {
Chris@0:         return self::compare($version1, '!=', $version2);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Evaluates the expression: $version1 $operator $version2.
Chris@0:      *
Chris@0:      * @param string $version1
Chris@0:      * @param string $operator
Chris@0:      * @param string $version2
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public static function compare($version1, $operator, $version2)
Chris@0:     {
Chris@0:         $constraint = new Constraint($operator, $version2);
Chris@0: 
Chris@0:         return $constraint->matches(new Constraint('==', $version1));
Chris@0:     }
Chris@0: }