/**
* Lookup the path of an asset.
*
* @param string $subpath The subpath of the asset, relative an addon root.
* @param Addon $addon The addon that should contain the asset.
* @param bool $mustExist Whether or not the asset must exist in the addon.
* @return string
*/
public function lookupAsset($subpath, Addon $addon = null, $mustExist = true)
{
$subpath = '/' . ltrim($subpath, '\\/');
// First lookup the asset on the theme.
foreach ($this->themeSubdirs() as $subdir) {
if (file_exists(PATH_ROOT . $subdir . $subpath)) {
return $subdir . $subpath;
}
}
if (isset($addon)) {
$path = $addon->getSubdir() . $subpath;
if ($mustExist && !file_exists(PATH_ROOT . $path)) {
return '';
} else {
return $path;
}
} else {
return '';
}
}