RootNode.php

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<?php
namespace TYPO3\CMS\Install\FolderStructure;

use TYPO3\CMS\Install\Status;

class RootNode extends DirectoryNode implements RootNodeInterface {

    public function __construct(array $structure, NodeInterface $parent = NULL) {
        if (!is_null($parent)) {
            throw new \TYPO3\CMS\Install\FolderStructure\Exception\RootNodeException(
                'Root node must not have parent',
                1366140117
            );
        }

        if (!isset($structure['name'])
            || ($this->isWindowsOs() && substr($structure['name'], 1, 2) !== ':/')
            || (!$this->isWindowsOs() && $structure['name'][0] !== '/')
        ) {
            throw new \TYPO3\CMS\Install\FolderStructure\Exception\InvalidArgumentException(
                'Root node expects absolute path as name',
                1366141329
            );
        }
        $this->name = $structure['name'];

        if (isset($structure['targetPermission'])) {
            $this->setTargetPermission($structure['targetPermission']);
        }

        if (array_key_exists('children', $structure)) {
            $this->createChildren($structure['children']);
        }
    }

    public function getStatus() {
        $result = array();
        if (!$this->exists()) {
            $status = new Status\ErrorStatus();
            $status->setTitle($this->getAbsolutePath() . ' does not exist');
            $result[] = $status;
        } else {
            $result = $this->getSelfStatus();
        }
        $result = array_merge($result, $this->getChildrenStatus());
        return $result;
    }

    public function getAbsolutePath() {
        return $this->name;
    }
}