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<?php
/**
* Part of the Joomla Framework Router Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Router;
use SuperClosure\SerializableClosure;
/**
* An object representing a route definition.
*
* @since 2.0.0
*/
class Route implements \Serializable
{
/**
* The controller which handles this route
*
* @var mixed
* @since 2.0.0
*/
private $controller;
/**
* The default variables defined by the route
*
* @var array
* @since 2.0.0
*/
private $defaults = [];
/**
* The HTTP methods this route supports
*
* @var string[]
* @since 2.0.0
*/
private $methods;
/**
* The route pattern to use for matching
*
* @var string
* @since 2.0.0
*/
private $pattern;
/**
* The path regex this route processes
*
* @var string
* @since 2.0.0
*/
private $regex;
/**
* The variables defined by the route
*
* @var array
* @since 2.0.0
*/
private $routeVariables = [];
/**
* An array of regex rules keyed using the route variables
*
* @var array
* @since 2.0.0
*/
private $rules = [];
/**
* Constructor.
*
* @param array $methods The HTTP methods this route supports
* @param string $pattern The route pattern to use for matching
* @param mixed $controller The controller which handles this route
* @param array $rules An array of regex rules keyed using the route variables
* @param array $defaults The default variables defined by the route
*
* @since 2.0.0
*/
public function __construct(array $methods, string $pattern, $controller, array $rules = [], array $defaults = [])
{
$this->setMethods($methods);
$this->setPattern($pattern);
$this->setController($controller);
$this->setRules($rules);
$this->setDefaults($defaults);
}
/**
* Parse the route's pattern to extract the named variables and build a proper regular expression for use when parsing the routes.
*
* @return void
*
* @since 2.0.0
*/
protected function buildRegexAndVarList(): void
{
// Sanitize and explode the pattern.
$pattern = explode('/', trim(parse_url($this->getPattern(), PHP_URL_PATH), ' /'));
// Prepare the route variables
$vars = [];
// Initialize regular expression
$regex = [];
// Loop on each segment
foreach ($pattern as $segment)
{
if ($segment == '*')
{
// Match a splat with no variable.
$regex[] = '.*';
}
elseif (isset($segment[0]) && $segment[0] == '*')
{
// Match a splat and capture the data to a named variable.
$vars[] = substr($segment, 1);
$regex[] = '(.*)';
}
elseif (isset($segment[0]) && $segment[0] == '\\' && $segment[1] == '*')
{
// Match an escaped splat segment.
$regex[] = '\*' . preg_quote(substr($segment, 2));
}
elseif ($segment == ':')
{
// Match an unnamed variable without capture.
$regex[] = '([^/]*)';
}
elseif (isset($segment[0]) && $segment[0] == ':')
{
// Match a named variable and capture the data.
$varName = substr($segment, 1);
$vars[] = $varName;
// Use the regex in the rules array if it has been defined.
$regex[] = array_key_exists($varName, $this->getRules()) ? '(' . $this->getRules()[$varName] . ')' : '([^/]*)';
}
elseif (isset($segment[0]) && $segment[0] == '\\' && $segment[1] == ':')
{
// Match a segment with an escaped variable character prefix.
$regex[] = preg_quote(substr($segment, 1));
}
else
{
// Match the standard segment.
$regex[] = preg_quote($segment);
}
}
$this->setRegex(\chr(1) . '^' . implode('/', $regex) . '$' . \chr(1));
$this->setRouteVariables($vars);
}
/**
* Retrieve the controller which handles this route
*
* @return mixed
*
* @since 2.0.0
*/
public function getController()
{
return $this->controller;
}
/**
* Retrieve the default variables defined by the route
*
* @return array
*
* @since 2.0.0
*/
public function getDefaults(): array
{
return $this->defaults;
}
/**
* Retrieve the HTTP methods this route supports
*
* @return string[]
*
* @since 2.0.0
*/
public function getMethods(): array
{
return $this->methods;
}
/**
* Retrieve the route pattern to use for matching
*
* @return string
*
* @since 2.0.0
*/
public function getPattern(): string
{
return $this->pattern;
}
/**
* Retrieve the path regex this route processes
*
* @return string
*
* @since 2.0.0
*/
public function getRegex(): string
{
if (!$this->regex)
{
$this->buildRegexAndVarList();
}
return $this->regex;
}
/**
* Retrieve the variables defined by the route
*
* @return array
*
* @since 2.0.0
*/
public function getRouteVariables(): array
{
if (!$this->regex)
{
$this->buildRegexAndVarList();
}
return $this->routeVariables;
}
/**
* Retrieve the regex rules keyed using the route variables
*
* @return array
*
* @since 2.0.0
*/
public function getRules(): array
{
return $this->rules;
}
/**
* Set the controller which handles this route
*
* @param mixed $controller The controller which handles this route
*
* @return $this
*
* @since 2.0.0
*/
public function setController($controller): self
{
$this->controller = $controller;
return $this;
}
/**
* Set the default variables defined by the route
*
* @param array $defaults The default variables defined by the route
*
* @return $this
*
* @since 2.0.0
*/
public function setDefaults(array $defaults): self
{
$this->defaults = $defaults;
return $this;
}
/**
* Set the HTTP methods this route supports
*
* @param array $methods The HTTP methods this route supports
*
* @return $this
*
* @since 2.0.0
*/
public function setMethods(array $methods): self
{
$this->methods = $this->methods = array_map('strtoupper', $methods);
return $this;
}
/**
* Set the route pattern to use for matching
*
* @param string $pattern The route pattern to use for matching
*
* @return $this
*
* @since 2.0.0
*/
public function setPattern(string $pattern): self
{
$this->pattern = $pattern;
$this->setRegex('');
$this->setRouteVariables([]);
return $this;
}
/**
* Set the path regex this route processes
*
* @param string $regex The path regex this route processes
*
* @return $this
*
* @since 2.0.0
*/
public function setRegex(string $regex): self
{
$this->regex = $regex;
return $this;
}
/**
* Set the variables defined by the route
*
* @param array $routeVariables The variables defined by the route
*
* @return $this
*
* @since 2.0.0
*/
public function setRouteVariables(array $routeVariables): self
{
$this->routeVariables = $routeVariables;
return $this;
}
/**
* Set the regex rules keyed using the route variables
*
* @param array $rules The rules defined by the route
*
* @return $this
*
* @since 2.0.0
*/
public function setRules(array $rules): self
{
$this->rules = $rules;
return $this;
}
/**
* Serialize the route.
*
* @return string The serialized route.
*
* @since 2.0.0
*/
public function serialize()
{
return serialize($this->__serialize());
}
/**
* Serialize the route.
*
* @return array The data to be serialized
*
* @since 2.0.0
*/
public function __serialize()
{
$controller = $this->getController();
if ($controller instanceof \Closure)
{
if (!class_exists(SerializableClosure::class))
{
throw new \RuntimeException(
\sprintf(
'Cannot serialize the route for pattern "%s" because the controller is a Closure. '
. 'Install the "jeremeamia/superclosure" package to serialize Closures.',
$this->getPattern()
)
);
}
$controller = new SerializableClosure($controller);
}
return [
'controller' => $controller,
'defaults' => $this->getDefaults(),
'methods' => $this->getMethods(),
'pattern' => $this->getPattern(),
'regex' => $this->getRegex(),
'routeVariables' => $this->getRouteVariables(),
'rules' => $this->getRules(),
];
}
/**
* Unserialize the route.
*
* @param string $serialized The serialized route.
*
* @return void
*
* @since 1.0
*/
public function unserialize($serialized)
{
$this->__unserialize(unserialize($serialized));
}
/**
* Unserialize the route.
*
* @param array $data The serialized route.
*
* @return void
*
* @since 2.0.0
*/
public function __unserialize(array $data)
{
$this->controller = $data['controller'];
$this->defaults = $data['defaults'];
$this->methods = $data['methods'];
$this->pattern = $data['pattern'];
$this->regex = $data['regex'];
$this->routeVariables = $data['routeVariables'];
$this->rules = $data['rules'];
}
}