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<?php |
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namespace HakimCh\Http; |
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class RouterParser implements RouterParserInterface |
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{ |
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protected $params = []; |
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protected $matchTypes = [ |
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'i' => '[0-9]++', |
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'a' => '[0-9A-Za-z]++', |
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'h' => '[0-9A-Fa-f]++', |
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'*' => '.+?', |
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'**' => '.++', |
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'' => '[^/\.]++' |
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]; |
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/** |
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* Create router in one call from config. |
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* |
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* @param array $matchTypes |
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*/ |
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public function __construct($matchTypes = []) |
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{ |
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$this->setMatchTypes($matchTypes); |
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} |
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/** |
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* Add named match types. It uses array_merge so keys can be overwritten. |
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* |
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* @param array $matchTypes The key is the name and the value is the regex. |
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*/ |
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public function setMatchTypes($matchTypes) |
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{ |
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$this->matchTypes = array_merge($this->matchTypes, $matchTypes); |
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} |
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/** |
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* Get the url from a route name |
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* |
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* @param string $basePath |
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* @param string $route |
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* @param array $params |
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* |
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* @return string |
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*/ |
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public function generateUrl($basePath, $route, array $params) |
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{ |
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$url = $basePath . $route; |
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if (preg_match_all('`(/|\.|)\[([^:\]]*+)(?::([^:\]]*+))?\](\?|)`', $route, $matches, PREG_SET_ORDER)) { |
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foreach ($matches as $match) { |
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$pre = $match[1]; |
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$param = $match[3]; |
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$block = $pre ? substr($match[0], 1) : $match[0]; |
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if (isset($params[$param])) { |
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$url = str_replace($block, $params[$param], $url); |
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} elseif ($match[4]) { |
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$url = str_replace($pre . $block, '', $url); |
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} |
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} |
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} |
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return $url; |
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} |
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/** |
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* @param string $method |
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* @param string $requestMethod |
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* @param string $routeString |
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* @param string $requestUrl |
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* |
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* @return mixed |
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*/ |
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public function methodMatch($method, $requestMethod, $routeString, $requestUrl) |
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{ |
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$methods = explode('|', $method); |
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if (preg_grep("/{$requestMethod}/i", $methods)) { |
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if ($routeString == '*') { |
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return true; |
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} elseif (isset($routeString[0]) && $routeString[0] == '@') { |
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return preg_match('`' . substr($routeString, 1) . '`u', $requestUrl, $this->params); |
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} elseif (($position = strpos($routeString, '[')) === false) { |
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return strcmp($requestUrl, $routeString) === 0; |
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} |
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if (strncmp($requestUrl, $routeString, $position) !== 0) { |
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return false; |
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} |
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return preg_match($this->compileRoute($routeString, $requestUrl), $requestUrl, $this->params); |
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} |
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return false; |
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} |
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/** |
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* Compile the regex for a given route (EXPENSIVE) |
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* |
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* @param $routeString |
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* @param $requestUrl |
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* |
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* @return string |
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*/ |
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private function compileRoute($routeString, $requestUrl) |
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{ |
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$route = $this->getRoute($routeString, $requestUrl); |
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if (preg_match_all('`(/|\.|)\[([^:\]]*+)(?::([^:\]]*+))?\](\?|)`', $route, $matches, PREG_SET_ORDER)) { |
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$matchTypes = $this->matchTypes; |
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foreach ($matches as $match) { |
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$pattern = $this->getRoutePattern($matchTypes, $match[1], $match[2], $match[3], $match[4]); |
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$route = str_replace($match[0], $pattern, $route); |
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} |
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} |
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return "`^$route$`u"; |
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} |
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/** |
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* @param $matchTypes |
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* @param $pre |
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* @param $type |
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* @param $param |
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* @param $optional |
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* |
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* @return string |
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*/ |
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private function getRoutePattern($matchTypes, $pre, $type, $param, $optional) |
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{ |
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if (isset($matchTypes[$type])) { |
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$type = $matchTypes[$type]; |
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} |
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if ($pre === '.') { |
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$pre = '\.'; |
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} |
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//Older versions of PCRE require the 'P' in (?P<named>) |
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return '(?:' |
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. (!empty($pre) ? $pre : null) |
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. '(' |
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. (!empty($param) ? "?P<$param>" : null) |
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. $type |
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. '))' |
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. (!empty($optional) ? '?' : null); |
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} |
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/** |
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* @param $routeString |
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* @param $requestUrl |
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* |
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* @return bool|string |
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*/ |
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private function getRoute($routeString, $requestUrl) |
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{ |
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$iPointer = $jPointer = 0; |
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$nPointer = isset($routeString[0]) ? $routeString[0] : null; |
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$regex = $route = false; |
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// Find the longest non-regex substring and match it against the URI |
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while (true) { |
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if (!isset($routeString[$iPointer])) { |
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break; |
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} |
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if ($regex === false) { |
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if (!$this->isValidRouteRegex($nPointer, $jPointer, $iPointer, $routeString, $requestUrl)) { |
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continue; |
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} |
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$jPointer++; |
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} |
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$route .= $routeString[$iPointer++]; |
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} |
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return $route; |
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} |
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/** |
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* @param $nPointer |
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* @param $jPointer |
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* @param $iPointer |
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* @param $routeString |
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* @param $requestUrl |
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* |
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* @return bool |
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*/ |
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private function isValidRouteRegex($nPointer, $jPointer, $iPointer, $routeString, $requestUrl) |
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{ |
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$cPointer = $nPointer; |
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$regex = in_array($cPointer, array('[', '(', '.')); |
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if (!$regex && isset($routeString[$iPointer+1])) { |
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$nPointer = $routeString[$iPointer + 1]; |
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$regex = in_array($nPointer, array('?', '+', '*', '{')); |
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} |
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if (!$regex && $cPointer !== '/' && (!isset($requestUrl[$jPointer]) || $cPointer !== $requestUrl[$jPointer])) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @return array |
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*/ |
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public function getParams() |
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{ |
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return $this->params; |
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} |
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/** |
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* @return array |
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*/ |
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public function getMatchTypes() |
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{ |
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return $this->matchTypes; |
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} |
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} |
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HakimCh /
Router
