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   1  <?php
   2  
   3  final class AphrontURIMapper {
   4  
   5    private $map;
   6  
   7    final public function __construct(array $map) {
   8      $this->map = $map;
   9    }
  10  
  11    final public function mapPath($path) {
  12      $map = $this->map;
  13      foreach ($map as $rule => $value) {
  14        list($controller, $data) = $this->tryRule($rule, $value, $path);
  15        if ($controller) {
  16          foreach ($data as $k => $v) {
  17            if (is_numeric($k)) {
  18              unset($data[$k]);
  19            }
  20          }
  21          return array($controller, $data);
  22        }
  23      }
  24  
  25      return array(null, null);
  26    }
  27  
  28    final private function tryRule($rule, $value, $path) {
  29      $match = null;
  30      $pattern = '#^'.$rule.(is_array($value) ? '' : '$').'#';
  31      if (!preg_match($pattern, $path, $match)) {
  32        return array(null, null);
  33      }
  34  
  35      if (!is_array($value)) {
  36        return array($value, $match);
  37      }
  38  
  39      $path = substr($path, strlen($match[0]));
  40      foreach ($value as $srule => $sval) {
  41        list($controller, $data) = $this->tryRule($srule, $sval, $path);
  42        if ($controller) {
  43          return array($controller, $data + $match);
  44        }
  45      }
  46  
  47      return array(null, null);
  48    }
  49  
  50  }