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: / opt / psa / admin / plib / modules / platform360 / vendor / nikic / fast-route / src / RouteParser /
Filename : Std.php
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<?php

namespace Platform360\FastRoute\RouteParser;

use Platform360\FastRoute\BadRouteException;
use Platform360\FastRoute\RouteParser;
/**
 * Parses route strings of the following form:
 *
 * "/user/{name}[/{id:[0-9]+}]"
 */
class Std implements RouteParser
{
    const VARIABLE_REGEX = <<<'REGEX'
\{
    \s* ([a-zA-Z_][a-zA-Z0-9_-]*) \s*
    (?:
        : \s* ([^{}]*(?:\{(?-1)\}[^{}]*)*)
    )?
\}
REGEX;
    const DEFAULT_DISPATCH_REGEX = '[^/]+';
    public function parse($route)
    {
        $routeWithoutClosingOptionals = \rtrim($route, ']');
        $numOptionals = \strlen($route) - \strlen($routeWithoutClosingOptionals);
        // Split on [ while skipping placeholders
        $segments = \preg_split('~' . self::VARIABLE_REGEX . '(*SKIP)(*F) | \\[~x', $routeWithoutClosingOptionals);
        if ($numOptionals !== \count($segments) - 1) {
            // If there are any ] in the middle of the route, throw a more specific error message
            if (\preg_match('~' . self::VARIABLE_REGEX . '(*SKIP)(*F) | \\]~x', $routeWithoutClosingOptionals)) {
                throw new BadRouteException('Optional segments can only occur at the end of a route');
            }
            throw new BadRouteException("Number of opening '[' and closing ']' does not match");
        }
        $currentRoute = '';
        $routeDatas = [];
        foreach ($segments as $n => $segment) {
            if ($segment === '' && $n !== 0) {
                throw new BadRouteException('Empty optional part');
            }
            $currentRoute .= $segment;
            $routeDatas[] = $this->parsePlaceholders($currentRoute);
        }
        return $routeDatas;
    }
    /**
     * Parses a route string that does not contain optional segments.
     *
     * @param string
     * @return mixed[]
     */
    private function parsePlaceholders($route)
    {
        if (!\preg_match_all('~' . self::VARIABLE_REGEX . '~x', $route, $matches, \PREG_OFFSET_CAPTURE | \PREG_SET_ORDER)) {
            return [$route];
        }
        $offset = 0;
        $routeData = [];
        foreach ($matches as $set) {
            if ($set[0][1] > $offset) {
                $routeData[] = \substr($route, $offset, $set[0][1] - $offset);
            }
            $routeData[] = [$set[1][0], isset($set[2]) ? \trim($set[2][0]) : self::DEFAULT_DISPATCH_REGEX];
            $offset = $set[0][1] + \strlen($set[0][0]);
        }
        if ($offset !== \strlen($route)) {
            $routeData[] = \substr($route, $offset);
        }
        return $routeData;
    }
}