League\CommonMark\Util\UrlEncoder::unescapeAndEncode()

Complexity

Conditions	8
Paths	8

Size

Total Lines	35
Code Lines	19

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	20
CRAP Score	8

Importance

Changes

0

<?php
    public static function unescapeAndEncode(string $uri): string
    {
        // Optimization: if the URL only includes characters we know will be kept as-is, then just return the URL as-is.
        if (\preg_match('/^[A-Za-z0-9~!@#$&*()\-_=+;:,.\/?]+$/', $uri)) {
            return $uri;
        }

        if (! \mb_check_encoding($uri, 'UTF-8')) {
            throw new UnexpectedEncodingException('Unexpected encoding - UTF-8 or ASCII was expected');
        }

        $result = '';

        $chars = \mb_str_split($uri, 1, 'UTF-8');

        $l = \count($chars);
        for ($i = 0; $i < $l; $i++) {
            $code = $chars[$i];
            if ($code === '%' && $i + 2 < $l) {
                if (\preg_match('/^[0-9a-f]{2}$/i', $chars[$i + 1] . $chars[$i + 2]) === 1) {
                    $result .= '%' . $chars[$i + 1] . $chars[$i + 2];
                    $i      += 2;
                    continue;
                }
            }

            if (\ord($code) < 128) {
                $result .= self::ENCODE_CACHE[\ord($code)];
                continue;
            }

            $result .= \rawurlencode($code);
        }

        return $result;
    }