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<?php |
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namespace Skansing\Escapology\RouteFileParser; |
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use \Skansing\Escapology\RouteFileParser; |
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class Regex implements RouteFileParser { |
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const |
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VERB = 0, |
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URI = 1, |
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REGEX_PREFIX = '~^(?:', |
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REGEX_SEPARATOR = '|', |
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REGEX_AFFIX = ')$~'; |
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/** |
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* Parses the passed route file and return a specialized array |
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* |
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* @param string $file Absolute path to the route file |
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* @throws \Exception If $file is missing or empty |
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* @return Array Lookup table for routes and a combined regex |
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*/ |
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public function digest($file) |
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{ |
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$routesData = $this->getRoutesData($file); |
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$routeRegexes = []; |
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for($i = 0; $i < count($routesData) -1; ++$i) { |
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$this->setRouteRegexData($routeRegexes, $routesData, $i); |
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$routeRegexes[$routesData[$i][self::VERB]] .= $routesData[$i][self::URI] . self::REGEX_SEPARATOR; |
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} |
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$this->setRouteRegexData($routeRegexes, $routesData, $i); |
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$routeRegexes[$routesData[$i][self::VERB]] .= $routesData[$i][self::URI]; |
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foreach($routeRegexes as $verb => $regex) { |
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$routeRegexes[$verb] .= self::REGEX_AFFIX; |
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} |
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return $routeRegexes; |
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} |
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/** |
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* Gets the routes data and returns it |
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* |
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* @param $file |
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* @throws \Exception If $file is missing or empty |
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*/ |
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private function getRoutesData($file) { |
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if(file_exists($file) === false) { |
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throw new \Exception('Route file not found.'); |
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} |
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$routesData = require $file; |
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if(empty($routesData)) { |
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throw new \Exception('Route file is empty.'); |
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} |
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return $routesData; |
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} |
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/** |
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* Sets the group regex string with the constant REGEX_PREFIX between each route |
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* |
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* @param array &$routeRegexes |
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* @param array &$routesData |
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* @param int $index |
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*/ |
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private function setRouteRegexData(&$routeRegexes, &$routesData, $index) { |
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if(isset($routeRegexes[$routesData[$index][self::VERB]]) === false) { |
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$routeRegexes[$routesData[$index][self::VERB]] = self::REGEX_PREFIX; |
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} |
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} |
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} |
RonnieSkansing /
Escapology
