router.php

См. документацию.

<?php
 
namespace Bitrix\Main\Routing;
 
use Bitrix\Main\HttpRequest;
use Bitrix\Main\Routing\Exceptions\ParameterNotFoundException;

class Router
{
    protected $routes = [];

    protected $routesByName = [];

    protected $configurations = [];
 
    public function registerConfiguration($configuration)
    {
        $this->configurations[] = $configuration;
    }
 
    public function releaseRoutes()
    {
        // go recursively through routes tree
        $i = -1;
        while (isset($this->configurations[++$i]))
        {
            $this->routes = array_merge($this->routes, $this->configurations[$i]->release());
        }
 
        // reindex
        $this->reindexRoutes();
 
        // don't need them anymore
        $this->configurations = [];
    }
 
    protected function reindexRoutes()
    {
        $this->routesByName = [];
 
        foreach ($this->routes as $route)
        {
            if ($route->getOptions() && $route->getOptions()->hasName())
            {
                $this->routesByName[$route->getOptions()->getFullName()] = $route;
            }
        }
    }

    public function match($request)
    {
        $path = urldecode($this->getUriPath($request));
 
        foreach ($this->routes as $route)
        {
            if ($matchResult = $route->match($path))
            {
                // check method
                if (!empty($route->getOptions()->getMethods())
                    && !in_array($request->getRequestMethod(), $route->getOptions()->getMethods(), true))
                {
                    continue;
                }
 
                if (is_array($matchResult))
                {
                    $route->getParametersValues()->setValues($matchResult);
                }
 
                return $route;
            }
        }
    }

    protected function getUriPath($request)
    {
        // cut GET parameters
        $path = str_replace(
            '?'.$request->getServer()->get('QUERY_STRING'),
            '',
            $request->getRequestUri()
        );
 
        // cut scheme and domain
        $scheme = $request->isHttps() ? 'https://' : 'http://';
        $schemeLen = strlen($scheme);
 
        if (substr($path, 0, $schemeLen) === $scheme)
        {
            $pathSlashPos = strpos(substr($path, $schemeLen), '/') + $schemeLen;
            $path = substr($path, $pathSlashPos);
        }
 
        return $path;
    }
 
    public function url($url, $parameters = [])
    {
        // scheme, domain?
        $finalUrl = $url;
 
        if (!empty($parameters))
        {
            $finalUrl .= '?'.http_build_query($parameters);
        }
 
        return $finalUrl;
    }

    public function route($name, $parameters = [])
    {
        if (!empty($this->routesByName[$name]))
        {
            // route should be compiled
            $route = $this->routesByName[$name];
            $route->compile();
 
            $uri = $route->getUri();
 
            if (!empty($routeParameters = $route->getParameters()))
            {
                foreach ($routeParameters as $parameterName => $pattern)
                {
                    if (array_key_exists($parameterName, $parameters))
                    {
                        // get from user
                        $value = $parameters[$parameterName];
 
                        // remove from user list
                        unset($parameters[$parameterName]);
                    }
                    elseif ($route->getOptions() && $route->getOptions()->hasDefault($parameterName))
                    {
                        $value = $route->getOptions()->getDefault($parameterName);
                    }
                    else
                    {
                        throw new ParameterNotFoundException;
                    }
 
                    // check with pattern?
 
                    $uri = str_replace("{{$parameterName}}", urlencode($value), $uri);
                }
            }
 
            // additional parameters as query string
            if (!empty($parameters))
            {
                $uri .= '?'.http_build_query($parameters);
            }
 
            return $uri;
        }
 
        return null;
    }

    public function getRoutes()
    {
        return $this->routes;
    }
}