/**
* Loads a package file from a file path.
*
* If the file does not exist, an empty configuration is returned.
*
* Loaded package files must have a package name set. If none is set, an
* exception is thrown.
*
* @param string $path The path to the package file.
*
* @return PackageFile The loaded package file.
*
* @throws InvalidConfigException If the file contains invalid configuration.
*/
public function loadPackageFile($path)
{
try {
// Don't use file_exists() to decouple from the file system
$packageFile = $this->reader->readPackageFile($path);
} catch (FileNotFoundException $e) {
$packageFile = new PackageFile(null, $path);
}
return $packageFile;
}
