73 lines
2.2 KiB
PHP
Executable file
73 lines
2.2 KiB
PHP
Executable file
<?php
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/**
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* League.Uri (https://uri.thephpleague.com)
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*
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* (c) Ignace Nyamagana Butera <nyamsprod@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace League\Uri\UriTemplate;
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use League\Uri\Exceptions\SyntaxError;
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use function preg_match;
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/**
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* @internal The class exposes the internal representation of a Var Specifier
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* @link https://www.rfc-editor.org/rfc/rfc6570#section-2.3
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*/
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final class VarSpecifier
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{
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/**
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* Variables specification regular expression pattern.
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*
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* @link https://tools.ietf.org/html/rfc6570#section-2.3
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*/
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private const REGEXP_VARSPEC = '/^(?<name>(?:[A-z0-9_\.]|%[0-9a-fA-F]{2})+)(?<modifier>\:(?<position>\d+)|\*)?$/';
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private const MODIFIER_POSITION_MAX_POSITION = 10_000;
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private function __construct(
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public readonly string $name,
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public readonly string $modifier,
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public readonly int $position
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) {
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}
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public static function new(string $specification): self
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{
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if (1 !== preg_match(self::REGEXP_VARSPEC, $specification, $parsed)) {
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throw new SyntaxError('The variable specification "'.$specification.'" is invalid.');
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}
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$properties = ['name' => $parsed['name'], 'modifier' => $parsed['modifier'] ?? '', 'position' => $parsed['position'] ?? ''];
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if ('' !== $properties['position']) {
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$properties['position'] = (int) $properties['position'];
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$properties['modifier'] = ':';
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}
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if ('' === $properties['position']) {
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$properties['position'] = 0;
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}
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if (self::MODIFIER_POSITION_MAX_POSITION <= $properties['position']) {
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throw new SyntaxError('The variable specification "'.$specification.'" is invalid the position modifier must be lower than 10000.');
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}
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return new self($properties['name'], $properties['modifier'], $properties['position']);
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}
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public function toString(): string
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{
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return $this->name.$this->modifier.match (true) {
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0 < $this->position => $this->position,
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default => '',
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};
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}
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}
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