Webmozart\PathUtil\Path::getHomeDirectory PHP Method

    public static function getHomeDirectory()
    {
        // For UNIX support
        if (getenv('HOME')) {
            return static::canonicalize(getenv('HOME'));
        }
        // For >= Windows8 support
        if (getenv('HOMEDRIVE') && getenv('HOMEPATH')) {
            return static::canonicalize(getenv('HOMEDRIVE') . getenv('HOMEPATH'));
        }
        throw new RuntimeException("Your environment or operation system isn't supported");
    }

 /**
  * {@inheritdoc}
  */
 public function getConfigTreeBuilder()
 {
     $treeBuilder = new TreeBuilder();
     $rootNode = $treeBuilder->root('nanando');
     $rootNode->children()->scalarNode('name')->defaultValue('nanbando')->end()->arrayNode('application')->addDefaultsIfNotSet()->children()->scalarNode('name')->defaultNull()->end()->scalarNode('version')->defaultNull()->end()->arrayNode('options')->prototype('scalar')->end()->end()->end()->end()->scalarNode('temp')->defaultValue(sys_get_temp_dir())->end()->arrayNode('backup')->useAttributeAsKey('name')->prototype('array')->children()->scalarNode('plugin')->end()->arrayNode('parameter')->prototype('variable')->end()->end()->end()->end()->end()->arrayNode('storage')->addDefaultsIfNotSet()->children()->scalarNode('local_directory')->defaultValue(Path::join([Path::getHomeDirectory(), 'nanbando']))->end()->scalarNode('remote_service')->end()->end()->end()->arrayNode('require')->prototype('variable')->end()->end()->arrayNode('presets')->prototype('array')->children()->scalarNode('application')->end()->scalarNode('version')->end()->arrayNode('options')->prototype('scalar')->end()->end()->arrayNode('backup')->prototype('array')->children()->scalarNode('plugin')->end()->arrayNode('parameter')->prototype('variable')->end()->end()->end()->end()->end()->end()->end()->end()->end();
     return $treeBuilder;
 }