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   1  <?php
   2  
   3  /**
   4   * Defines the location of physical static resources which exist at build time
   5   * and are precomputed into a resource map.
   6   */
   7  abstract class CelerityPhysicalResources extends CelerityResources {
   8  
   9    private $map;
  10  
  11    abstract public function getPathToMap();
  12    abstract public function findBinaryResources();
  13    abstract public function findTextResources();
  14  
  15    public function loadMap() {
  16      if ($this->map === null) {
  17        $this->map = include $this->getPathToMap();
  18      }
  19      return $this->map;
  20    }
  21  
  22    public static function getAll() {
  23      static $resources_map;
  24      if ($resources_map === null) {
  25        $resources_map = array();
  26  
  27        $resources_list = id(new PhutilSymbolLoader())
  28          ->setAncestorClass('CelerityPhysicalResources')
  29          ->loadObjects();
  30  
  31        foreach ($resources_list as $resources) {
  32          $name = $resources->getName();
  33  
  34          if (!preg_match('/^[a-z0-9]+/', $name)) {
  35            throw new Exception(
  36              pht(
  37                'Resources name "%s" is not valid; it must contain only '.
  38                'lowercase latin letters and digits.',
  39                $name));
  40          }
  41  
  42          if (empty($resources_map[$name])) {
  43            $resources_map[$name] = $resources;
  44          } else {
  45            $old = get_class($resources_map[$name]);
  46            $new = get_class($resources);
  47            throw new Exception(
  48              pht(
  49                'Celerity resource maps must have unique names, but maps %s and '.
  50                '%s share the same name, "%s".',
  51                $old,
  52                $new,
  53                $name));
  54          }
  55        }
  56      }
  57  
  58      return $resources_map;
  59    }
  60  
  61  }