CelerityResources.php
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	<?php

	/**
	* Defines the location of static resources.
	*/
	abstract class CelerityResources {

	private $map;

	abstract public function getName();
	abstract public function getPathToMap();
	abstract public function getResourceData($name);
	abstract public function findBinaryResources();
	abstract public function findTextResources();
	abstract public function getResourceModifiedTime($name);

	public function getCelerityHash($data) {
	$tail = PhabricatorEnv::getEnvConfig('celerity.resource-hash');
	$hash = PhabricatorHash::digest($data, $tail);
	return substr($hash, 0, 8);
	}

	public function getResourceType($path) {
	return CelerityResourceTransformer::getResourceType($path);
	}

	public function getResourceURI($hash, $name) {
	return "/res/{$hash}/{$name}";
	}

	public function getResourcePackages() {
	return array();
	}

	public function loadMap() {
	if ($this->map === null) {
	$this->map = include $this->getPathToMap();
	}
	return $this->map;
	}

	public static function getAll() {
	static $resources_map;
	if ($resources_map === null) {
	$resources_map = array();

	$resources_list = id(new PhutilSymbolLoader())
	->setAncestorClass('CelerityResources')
	->loadObjects();

	foreach ($resources_list as $resources) {
	$name = $resources->getName();
	if (empty($resources_map[$name])) {
	$resources_map[$name] = $resources;
	} else {
	$old = get_class($resources_map[$name]);
	$new = get_class($resources);
	throw new Exception(
	pht(
	'Celerity resource maps must have unique names, but maps %s and '.
	'%s share the same name, "%s".',
	$old,
	$new,
	$name));
	}
	}
	}

	return $resources_map;
	}

	}