Swaggest\JsonSchema\Helper::toPregPattern()

Complexity

Conditions	5
Paths	9

Size

Total Lines	22
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public static function toPregPattern($jsonPattern)
    {
        static $delimiters = array('/', '#', '+', '~', '%');

        $pattern = false;
        foreach ($delimiters as $delimiter) {
            if (strpos($jsonPattern, $delimiter) === false) {
                $pattern = $delimiter . $jsonPattern . $delimiter . 'u';
                break;
            }
        }

        if (false === $pattern) {
            throw new InvalidValue('Failed to prepare preg pattern');
        }

        if (@preg_match($pattern, '') === false) {
            throw new InvalidValue('Regex pattern is invalid: ' . $jsonPattern);
        }

        return $pattern;
    }

}