File Content: VarSpecifier.php <?php /** * League.Uri (https://uri.thephpleague.com) * * (c) Ignace Nyamagana Butera <nyamsprod@gmail.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ declare (strict_types=1); namespace PleskGrafana\League\Uri\UriTemplate; use PleskGrafana\League\Uri\Exceptions\SyntaxError; use function preg_match; /** * @internal The class exposes the internal representation of a Var Specifier * @link https://www.rfc-editor.org/rfc/rfc6570#section-2.3 */ final class VarSpecifier { /** * Variables specification regular expression pattern. * * @link https://tools.ietf.org/html/rfc6570#section-2.3 */ private const REGEXP_VARSPEC = '/^(?<name>(?:[A-z0-9_\\.]|%[0-9a-fA-F]{2})+)(?<modifier>\\:(?<position>\\d+)|\\*)?$/'; private const MODIFIER_POSITION_MAX_POSITION = 10000; private function __construct(public readonly string $name, public readonly string $modifier, public readonly int $position) { } public static function new(string $specification) : self { if (1 !== preg_match(self::REGEXP_VARSPEC, $specification, $parsed)) { throw new SyntaxError('The variable specification "' . $specification . '" is invalid.'); } $properties = ['name' => $parsed['name'], 'modifier' => $parsed['modifier'] ?? '', 'position' => $parsed['position'] ?? '']; if ('' !== $properties['position']) { $properties['position'] = (int) $properties['position']; $properties['modifier'] = ':'; } if ('' === $properties['position']) { $properties['position'] = 0; } if (self::MODIFIER_POSITION_MAX_POSITION <= $properties['position']) { throw new SyntaxError('The variable specification "' . $specification . '" is invalid the position modifier must be lower than 10000.'); } return new self($properties['name'], $properties['modifier'], $properties['position']); } public function toString() : string { return $this->name . $this->modifier . match (\true) { 0 < $this->position => $this->position, default => '', }; } } Submit