samsonframework\stringconditiontree\string\FixedCG::getCommonPrefix()

Complexity

Conditions	3
Paths	3

Size

Total Lines	27
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	12
CRAP Score	3

Importance

Changes

0

<?php declare(strict_types=1);
    public function getCommonPrefix(AbstractCG $group): string
    {
        $prefix = '';

        // Convert strings to arrays
        $initialArray = str_split($this->string);
        $comparedArray = str_split($group->string);

        // Get shortest array
        $minSize = min(count($initialArray), count($comparedArray));

        // Iterate longest array
        for ($i = 0; $i < $minSize; $i++) {
            // Get existing character or empty string
            $initialChar = $initialArray[$i] ?? '';
            $comparedChar = $comparedArray[$i] ?? '';

            // On first mismatch - break
            if ($initialChar !== $comparedChar) {
                break;
            }

            $prefix .= $initialChar;
        }

        return $prefix;
    }