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<?php |
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namespace Zaphpa; |
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/** |
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* Generic URI matcher and parser implementation. |
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*/ |
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class Template { |
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private static $globalQueryParams = array(); |
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private $patterns = array(); |
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private $template = null; |
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private $params = array(); |
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private $callbacks = array(); |
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public function __construct($path) { |
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if ($path{0} != '/') { |
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$path = "/$path"; |
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} |
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$this->template = rtrim($path, '\/'); |
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} |
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public function getTemplate() { |
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return $this->template; |
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} |
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public function getExpression() { |
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$expression = $this->template; |
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if (preg_match_all('~(?P<match>\{(?P<name>.+?)\})~', $expression, $matches)) { |
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$expressions = array_map(array($this, 'pattern'), $matches['name']); |
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$expression = str_replace($matches['match'], $expressions, $expression); |
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} |
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return sprintf('~^%s$~', $expression); |
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} |
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public function pattern($token, $pattern = null) { |
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if ($pattern) { |
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if (!isset($this->patterns[$token])) { |
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$this->patterns[$token] = $pattern; |
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} |
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} else { |
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if (isset($this->patterns[$token])) { |
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$pattern = $this->patterns[$token]; |
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} else { |
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$pattern = Constants::PATTERN_ANY; |
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} |
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if ((is_string($pattern) && is_callable($pattern)) || is_array($pattern)) { |
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$this->callbacks[$token] = $pattern; |
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$this->patterns[$token] = $pattern = Constants::PATTERN_ANY; |
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} |
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return sprintf($pattern, $token); |
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} |
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} |
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View Code Duplication |
public function addQueryParam($name, $pattern = '', $defaultValue = null) { |
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if (!$pattern) { |
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$pattern = Constants::PATTERN_ANY; |
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} |
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$this->params[$name] = (object) array( |
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'pattern' => sprintf($pattern, $name), |
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'value' => $defaultValue |
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); |
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} |
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View Code Duplication |
public static function addGlobalQueryParam($name, $pattern = '', $defaultValue = null) { |
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if (!$pattern) { |
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$pattern = Constants::PATTERN_ANY; |
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} |
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self::$globalQueryParams[$name] = (object) array( |
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'pattern' => sprintf($pattern, $name), |
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'value' => $defaultValue |
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); |
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} |
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public function match($uri) { |
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$uri = rtrim($uri, '\/'); |
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$match_found = preg_match($this->getExpression(), $uri, $matches); |
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if (! $match_found) return; |
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foreach($matches as $k => $v) { |
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if (is_numeric($k)) { |
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unset($matches[$k]); |
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} else { |
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if (isset($this->callbacks[$k])) { |
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$callback = Callback_Util::getCallback($this->callbacks[$k]); |
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$value = call_user_func($callback, $v); |
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if ($value) { |
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$matches[$k] = $value; |
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} else { |
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throw new InvalidURIParameterException('Invalid parameters detected'); |
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} |
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} |
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if (strpos($v, '/') !== false) { |
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$matches[$k] = explode('/', trim($v, '\/')); |
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} |
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} |
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} |
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$params = array_merge(self::$globalQueryParams, $this->params); |
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if (!empty($params)) { |
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$this->enforceParamMatching($params); |
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} |
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return $matches; |
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} |
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protected function enforceParamMatching($params) { |
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foreach($params as $name => $param) { |
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if (!isset($_GET[$name]) && $param->value) { |
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$_GET[$name] = $param->value; |
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$matched = true; |
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} else if ($param->pattern && isset($_GET[$name])) { |
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$result = preg_match(sprintf('~^%s$~', $param->pattern), $_GET[$name]); |
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if (!$result && $param->value) { |
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$_GET[$name] = $param->value; |
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$result = true; |
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} |
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$matched = $result; |
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} else { |
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$matched = false; |
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} |
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if ($matched == false) { |
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throw new Exception('Request does not match'); |
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} |
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} |
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} |
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public static function regex($pattern) { |
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return "(?P<%s>$pattern)"; |
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} |
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} |
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zaphpa /
zaphpa
