Caxy\HtmlDiff\Strategy\ListItemMatchStrategy::isMatch()

Complexity

Conditions	11
Paths	10

Size

Total Lines	49
Code Lines	28

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	1

<?php
    public function isMatch($a, $b)
    {
        $percentage = null;

        // Strip tags and check similarity
        $aStripped = strip_tags($a);
        $bStripped = strip_tags($b);
        similar_text($aStripped, $bStripped, $percentage);

        if ($percentage >= $this->similarityThreshold) {
            return true;
        }

        // Check w/o stripped tags
        similar_text($a, $b, $percentage);
        if ($percentage >= $this->similarityThreshold) {
            return true;
        }

        // Check common prefix/ suffix length
        $aCleaned = trim($aStripped);
        $bCleaned = trim($bStripped);
        if (strlen($aCleaned) === 0 || strlen($bCleaned) === 0) {
            $aCleaned = $a;
            $bCleaned = $b;
        }
        if (strlen($aCleaned) === 0 || strlen($bCleaned) === 0) {
            return false;
        }
        $prefixIndex = Preprocessor::diffCommonPrefix($aCleaned, $bCleaned);
        $suffixIndex = Preprocessor::diffCommonSuffix($aCleaned, $bCleaned);

        // Use shorter string, and see how much of it is leftover
        $len = min(strlen($aCleaned), strlen($bCleaned));
        $remaining = $len - ($prefixIndex + $suffixIndex);
        $strLengthPercent = $len / max(strlen($a), strlen($b));

        if ($remaining === 0 && $strLengthPercent > $this->lengthRatioThreshold) {
            return true;
        }

        $percentCommon = ($prefixIndex + $suffixIndex) / $len;

        if ($strLengthPercent > 0.1 && $percentCommon > $this->commonTextRatioThreshold) {

This if statement, and the following return statement can be replaced with return $strLengthPercent > 0.1 && $percentCommon > $this->commonTextRatioThreshold;.

            return true;
        }

        return false;
    }
}