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<?php |
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namespace Mezon\Router; |
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use Mezon\Router\Types\BaseType; |
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trait UrlParser |
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{ |
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/** |
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* Parsed parameters of the calling router |
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* |
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* @var array |
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*/ |
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protected $parameters = []; |
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/** |
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* Called route |
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* |
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* @var string |
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*/ |
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protected $calledRoute = ''; |
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/** |
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* Cache for regular expressions |
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* |
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* @var array |
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*/ |
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private $cachedRegExps = []; |
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/** |
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* Cached parameters for route |
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* |
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* @var array |
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*/ |
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private $cachedParameters = []; |
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/** |
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* Middleware for routes processing |
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* |
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* @var array |
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*/ |
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private $middleware = []; |
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/** |
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* Method compiles route pattern string in regex string. |
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* For example [i:id]/some-str in ([\[0-9\]])/some-str |
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* |
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* @param string $routerPattern |
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* router pattern |
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* @return string regexp pattern |
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*/ |
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private function _getRouteMatcherRegExPattern(string $routerPattern): string |
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{ |
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$key = $routerPattern; |
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// try read from cache |
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if (isset($this->cachedRegExps[$key])) { |
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return $this->cachedRegExps[$key]; |
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} |
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// parsing routes |
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$compiledRouterPattern = $routerPattern; |
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foreach ($this->types as $typeClass) { |
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$compiledRouterPattern = preg_replace( |
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'/' . $typeClass::searchRegExp() . '/', |
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'(' . $typeClass::parserRegExp() . ')', |
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$compiledRouterPattern); |
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} |
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// final setup + save in cache |
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$this->cachedRegExps[$key] = $compiledRouterPattern; |
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return $compiledRouterPattern; |
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} |
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/** |
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* Method returns all parameter names in the route |
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* |
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* @param string $routerPattern |
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* route |
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* @return array names |
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*/ |
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private function _getParameterNames(string $routerPattern): array |
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{ |
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if (isset($this->cachedParameters[$routerPattern])) { |
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return $this->cachedParameters[$routerPattern]; |
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} |
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$regExPattern = []; |
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foreach (array_keys($this->types) as $typeName) { |
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$regExPattern[] = $typeName; |
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} |
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$regExPattern = '\[(' . implode('|', $regExPattern) . '):(' . BaseType::PARAMETER_NAME_REGEXP . ')\]'; |
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$names = []; |
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preg_match_all('/' . str_replace('/', '\\/', $regExPattern) . '/', $routerPattern, $names); |
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$return = []; |
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foreach ($names[2] as $name) { |
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$return[] = $name; |
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} |
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$this->cachedParameters[$routerPattern] = $return; |
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return $return; |
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} |
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/** |
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* Method warms cache |
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*/ |
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public function warmCache(): void |
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{ |
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foreach (self::getListOfSupportedRequestMethods() as $requestMethod) { |
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foreach ($this->paramRoutes[$requestMethod] as $bunch) { |
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foreach ($bunch['bunch'] as $route) { |
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$this->_getRouteMatcherRegExPattern($route['pattern']); |
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$this->_getParameterNames($route['pattern']); |
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} |
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} |
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} |
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$this->compileRegexpForBunches(); |
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} |
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/** |
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* Method searches dynamic route processor |
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* |
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* @param string $route |
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* Route |
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* @param string $requestMethod |
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* Request method |
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* @return array|callable|bool route's handler or false in case the handler was not found |
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*/ |
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protected function getDynamicRouteProcessor(string $route, string $requestMethod = '') |
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{ |
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$bunches = $this->paramRoutes[$requestMethod == '' ? $_SERVER['REQUEST_METHOD'] : $requestMethod]; |
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foreach ($bunches as $bunch) { |
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$matches = []; |
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if (preg_match($bunch['regexp'], $route, $matches)) { |
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$routeData = $bunch['bunch'][count($matches)]; |
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$names = $this->_getParameterNames($routeData['pattern']); |
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$this->parameters = []; |
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foreach ($names as $i => $name) { |
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$this->parameters[$name] = $matches[$i + 1]; |
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} |
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$this->calledRoute = $routeData['pattern']; |
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return $routeData['callback']; |
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} |
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} |
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// match was not found |
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return false; |
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} |
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/** |
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* Method searches dynamic route processor |
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* |
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* @param string $route |
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* Route |
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* @return string|bool Result of the router'scall or false if any error occured |
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*/ |
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public function findDynamicRouteProcessor(string $route) |
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{ |
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$processor = $this->getDynamicRouteProcessor($route); |
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if ($processor === false) { |
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return false; |
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} |
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return $this->executeHandler($processor, $route); |
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} |
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/** |
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* Checking that method exists |
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* |
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* @param mixed $processor |
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* callback object |
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* @param ?string $functionName |
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* callback method |
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* @return bool true if method does not exists |
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*/ |
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private function methodDoesNotExists($processor, ?string $functionName): bool |
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{ |
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return isset($processor[0]) && method_exists($processor[0], $functionName) === false; |
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} |
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/** |
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* Checking that handler can be called |
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* |
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* @param object|array|callable $processor |
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* callback object |
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* @param ?string $functionName |
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* callback method |
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* @return bool |
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*/ |
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private function canBeCalled($processor, ?string $functionName): bool |
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{ |
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return is_callable($processor) && |
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(method_exists($processor[0], $functionName) || isset($processor[0]->$functionName)); |
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} |
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/** |
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* Checking that processor can be called as function |
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* |
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* @param mixed $processor |
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* route processor |
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* @return bool true if the $processor can be called as function |
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*/ |
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private function isFunction($processor): bool |
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{ |
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return is_callable($processor) && is_array($processor) === false; |
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} |
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/** |
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* Method registeres middleware for the router |
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* |
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* @param callable $middleware |
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* middleware |
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*/ |
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public function registerMiddleware(string $router, callable $middleware): void |
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{ |
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$routerTrimmed = trim($router, '/'); |
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if (! isset($this->middleware[$routerTrimmed])) { |
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$this->middleware[$routerTrimmed] = []; |
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} |
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$this->middleware[$routerTrimmed][] = $middleware; |
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} |
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/** |
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* Method returns middleware processing result |
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* |
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* @param string $route |
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* processed route |
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* @return array middleware result |
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*/ |
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private function getMiddlewareResult(string $route): array |
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{ |
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$middleWares = []; |
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if (isset($this->middleware['*'])) { |
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$middleWares = $this->middleware['*']; |
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} |
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if ($this->calledRoute !== '*' && isset($this->middleware[$this->calledRoute])) { |
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$middleWares = array_merge($middleWares, $this->middleware[$this->calledRoute]); |
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} |
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$result = [ |
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$route, |
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$this->parameters |
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]; |
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if (! count($middleWares)) { |
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return $result; |
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} |
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foreach ($middleWares as $middleWare) { |
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$result = call_user_func($middleWare, $route, $this->parameters); |
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if (is_array($result)) { |
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if (array_key_exists(0, $result)) { |
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$route = $result[0]; |
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} |
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if (array_key_exists(1, $result)) { |
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$this->parameters = $result[1]; |
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} |
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} |
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} |
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return [ |
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$route, |
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$this->parameters |
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]; |
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} |
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/** |
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* Method executes route handler |
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* |
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* @param mixed $processor |
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* @param string $route |
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* @return mixed route handler execution result |
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*/ |
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protected function executeHandler($processor, string $route) |
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{ |
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if ($this->isFunction($processor)) { |
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return call_user_func_array($processor, $this->getMiddlewareResult($route)); |
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} |
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$functionName = $processor[1] ?? null; |
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if ($this->canBeCalled($processor, $functionName)) { |
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// passing route path and parameters |
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return call_user_func_array($processor, $this->getMiddlewareResult($route)); |
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} else { |
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$callableDescription = Utils::getCallableDescription($processor); |
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if ($this->methodDoesNotExists($processor, $functionName)) { |
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throw (new \Exception("'$callableDescription' does not exists")); |
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} else { |
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throw (new \Exception("'$callableDescription' must be callable entity")); |
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} |
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} |
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} |
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/** |
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* Method returns route handler |
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* |
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* @param string $route |
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* Route |
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* @return array|callable|bool route handler |
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*/ |
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protected function getStaticRouteProcessor(string $route) |
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{ |
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$processors = $this->staticRoutes[$_SERVER['REQUEST_METHOD']]; |
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if (isset($processors[$route])) { |
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$this->calledRoute = $route; |
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return $processors[$route]; |
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} else { |
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return false; |
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} |
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} |
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338
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/** |
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* Method returns route handler |
340
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* |
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* @return array|callable|bool route handler |
342
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*/ |
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protected function getUniversalRouteProcessor() |
344
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{ |
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$processors = $this->staticRoutes[$_SERVER['REQUEST_METHOD']]; |
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347
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if (isset($processors['*'])) { |
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$this->calledRoute = '*'; |
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350
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return $processors['*']; |
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} else { |
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return false; |
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} |
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} |
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356
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/** |
357
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* Method searches route processor |
358
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* |
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* @param string $route |
360
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* Route |
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* @return mixed Result of the router processor |
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*/ |
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public function findStaticRouteProcessor(string $route) |
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{ |
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$processor = $this->getStaticRouteProcessor($route); |
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if ($processor === false) { |
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return false; |
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} |
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return $this->executeHandler($processor, $route); |
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} |
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/** |
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* Method searches universal route processor |
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* |
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* @param string $route |
378
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* Route |
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* @return mixed Result of the router processor |
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*/ |
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public function findUniversalRouteProcessor(string $route) |
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{ |
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$processor = $this->getUniversalRouteProcessor(); |
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385
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if ($processor === false) { |
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return false; |
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} |
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return $this->executeHandler($processor, $route); |
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} |
391
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|
392
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/** |
393
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* Method returns route parameter |
394
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* |
395
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* @param string $name |
396
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* Route parameter |
397
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* @return string Route parameter |
398
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*/ |
399
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public function getParam(string $name): string |
400
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{ |
401
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if (isset($this->parameters[$name]) === false) { |
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throw (new \Exception('Parameter ' . $name . ' was not found in route', - 1)); |
403
|
|
|
} |
404
|
|
|
|
405
|
|
|
return $this->parameters[$name]; |
406
|
|
|
} |
407
|
|
|
|
408
|
|
|
/** |
409
|
|
|
* Does parameter exists |
410
|
|
|
* |
411
|
|
|
* @param string $name |
412
|
|
|
* Param name |
413
|
|
|
* @return bool True if the parameter exists |
414
|
|
|
*/ |
415
|
|
|
public function hasParam(string $name): bool |
416
|
|
|
{ |
417
|
|
|
return isset($this->parameters[$name]); |
418
|
|
|
} |
419
|
|
|
|
420
|
|
|
/** |
421
|
|
|
* Getting route by name |
422
|
|
|
* |
423
|
|
|
* @param string $routeName |
424
|
|
|
* route's name |
425
|
|
|
* @return string route |
426
|
|
|
*/ |
427
|
|
|
public abstract function getRouteByName(string $routeName): string; |
428
|
|
|
|
429
|
|
|
/** |
430
|
|
|
* Compiling route into URL |
431
|
|
|
* |
432
|
|
|
* @param string $routeName |
433
|
|
|
* route name |
434
|
|
|
* @param array $parameters |
435
|
|
|
* parameters to use in URL |
436
|
|
|
* @return string compiled route |
437
|
|
|
*/ |
438
|
|
|
public function reverse(string $routeName, array $parameters = []): string |
439
|
|
|
{ |
440
|
|
|
$route = $this->getRouteByName($routeName); |
441
|
|
|
|
442
|
|
|
foreach ($parameters as $name => $value) { |
443
|
|
|
$route = preg_replace('/\[([A-Za-z_\-])\:' . $name . ']/', $value, $route); |
444
|
|
|
} |
445
|
|
|
|
446
|
|
|
return $route; |
447
|
|
|
} |
448
|
|
|
} |
449
|
|
|
|