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Completed
Push — master ( e2875b...35ced9 )
by Anton
03:41
created

src/Component/PharUpdate/Version/Comparator.php (2 issues)

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<?php
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namespace Deployer\Component\PharUpdate\Version;
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/**
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 * Compares two Version instances.
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 *
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 * @author Kevin Herrera <[email protected]>
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 */
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class Comparator
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{
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    /**
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     * The version is equal to another.
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     */
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    const EQUAL_TO = 0;
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    /**
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     * The version is greater than another.
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     */
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    const GREATER_THAN = 1;
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    /**
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     * The version is less than another.
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     */
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    const LESS_THAN = -1;
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    /**
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     * Compares one version with another.
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     *
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     * @param Version $left  The left version to compare.
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     * @param Version $right The right version to compare.
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     *
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     * @return integer Returns Comparator::EQUAL_TO if the two versions are
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     *                 equal. If the left version is less than the right
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     *                 version, Comparator::LESS_THAN is returned. If the left
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     *                 version is greater than the right version,
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     *                 Comparator::GREATER_THAN is returned.
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     */
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    public static function compareTo(Version $left, Version $right)
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    {
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        switch (true) {
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            case ($left->getMajor() < $right->getMajor()):
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                return self::LESS_THAN;
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            case ($left->getMajor() > $right->getMajor()):
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                return self::GREATER_THAN;
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            case ($left->getMinor() > $right->getMinor()):
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                return self::GREATER_THAN;
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            case ($left->getMinor() < $right->getMinor()):
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                return self::LESS_THAN;
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            case ($left->getPatch() > $right->getPatch()):
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                return self::GREATER_THAN;
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            case ($left->getPatch() < $right->getPatch()):
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                return self::LESS_THAN;
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            // @codeCoverageIgnoreStart
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        }
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        // @codeCoverageIgnoreEnd
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        return self::compareIdentifiers(
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            $left->getPreRelease(),
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            $right->getPreRelease()
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        );
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    }
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    /**
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     * Checks if the left version is equal to the right.
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     *
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     * @param Version $left  The left version to compare.
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     * @param Version $right The right version to compare.
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     *
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     * @return boolean TRUE if the left version is equal to the right, FALSE
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     *                 if not.
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     */
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    public static function isEqualTo(Version $left, Version $right)
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    {
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        return (self::EQUAL_TO === self::compareTo($left, $right));
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    }
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    /**
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     * Checks if the left version is greater than the right.
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     *
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     * @param Version $left  The left version to compare.
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     * @param Version $right The right version to compare.
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     *
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     * @return boolean TRUE if the left version is greater than the right,
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     *                 FALSE if not.
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     */
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    public static function isGreaterThan(Version $left, Version $right)
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    {
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        return (self::GREATER_THAN === self::compareTo($left, $right));
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    }
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    /**
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     * Checks if the left version is less than the right.
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     *
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     * @param Version $left  The left version to compare.
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     * @param Version $right The right version to compare.
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     *
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     * @return boolean TRUE if the left version is less than the right,
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     *                 FALSE if not.
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     */
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    public static function isLessThan(Version $left, Version $right)
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    {
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        return (self::LESS_THAN === self::compareTo($left, $right));
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    }
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    /**
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     * Compares the identifier components of the left and right versions.
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     *
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     * @param array $left  The left identifiers.
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     * @param array $right The right identifiers.
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     *
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     * @return integer Returns Comparator::EQUAL_TO if the two identifiers are
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     *                 equal. If the left identifiers is less than the right
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     *                 identifiers, Comparator::LESS_THAN is returned. If the
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     *                 left identifiers is greater than the right identifiers,
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     *                 Comparator::GREATER_THAN is returned.
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     */
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    public static function compareIdentifiers(array $left, array $right)
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    {
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        if ($left && empty($right)) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $left of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using ! empty($expr) instead to make it clear that you intend to check for an array without elements.

This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.

Consider making the comparison explicit by using empty(..) or ! empty(...) instead.

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            return self::LESS_THAN;
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        } elseif (empty($left) && $right) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $right of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using ! empty($expr) instead to make it clear that you intend to check for an array without elements.

This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.

Consider making the comparison explicit by using empty(..) or ! empty(...) instead.

Loading history...
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            return self::GREATER_THAN;
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        }
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        $l = $left;
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        $r = $right;
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        $x = self::GREATER_THAN;
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        $y = self::LESS_THAN;
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        if (count($l) < count($r)) {
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            $l = $right;
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            $r = $left;
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            $x = self::LESS_THAN;
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            $y = self::GREATER_THAN;
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        }
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        foreach (array_keys($l) as $i) {
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            if (!isset($r[$i])) {
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                return $x;
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            }
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            if ($l[$i] === $r[$i]) {
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                continue;
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            }
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147 View Code Duplication
            if (true === ($li = (false != preg_match('/^\d+$/', $l[$i])))) {
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                $l[$i] = intval($l[$i]);
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            }
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151 View Code Duplication
            if (true === ($ri = (false != preg_match('/^\d+$/', $r[$i])))) {
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                $r[$i] = intval($r[$i]);
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            }
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            if ($li && $ri) {
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                return ($l[$i] > $r[$i]) ? $x : $y;
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            } elseif (!$li && $ri) {
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                return $x;
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            } elseif ($li && !$ri) {
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                return $y;
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            }
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            $result = strcmp($l[$i], $r[$i]);
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            if ($result > 0) {
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                return $x;
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            } elseif ($result < 0) {
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                return $y;
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            }
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        }
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        return self::EQUAL_TO;
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    }
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}
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