class vfsStreamStructureVisitor

class vfsStreamStructureVisitor extends vfsStreamAbstractVisitor {
    
    /**
     * collected structure
     *
     * @type  array
     */
    protected $structure = array();
    
    /**
     * poiting to currently iterated directory
     *
     * @type  array
     */
    protected $current;
    
    /**
     * constructor
     *
     * @api
     */
    public function __construct() {
        $this->reset();
    }
    
    /**
     * visit a file and process it
     *
     * @param   vfsStreamFile  $file
     * @return  vfsStreamStructureVisitor
     */
    public function visitFile(vfsStreamFile $file) {
        $this->current[$file->getName()] = $file->getContent();
        return $this;
    }
    
    /**
     * visit a block device and process it
     *
     * @param   vfsStreamBlock $block
     * @return  vfsStreamStructureVisitor
     */
    public function visitBlockDevice(vfsStreamBlock $block) {
        $this->current['[' . $block->getName() . ']'] = $block->getContent();
        return $this;
    }
    
    /**
     * visit a directory and process it
     *
     * @param   vfsStreamDirectory  $dir
     * @return  vfsStreamStructureVisitor
     */
    public function visitDirectory(vfsStreamDirectory $dir) {
        $this->current[$dir->getName()] = array();
        $tmp =& $this->current;
        $this->current =& $tmp[$dir->getName()];
        foreach ($dir as $child) {
            $this->visit($child);
        }
        $this->current =& $tmp;
        return $this;
    }
    
    /**
     * returns structure of visited contents
     *
     * @return  array
     * @api
     */
    public function getStructure() {
        return $this->structure;
    }
    
    /**
     * resets structure so visitor could be reused
     *
     * @return  vfsStreamStructureVisitor
     */
    public function reset() {
        $this->structure = array();
        $this->current =& $this->structure;
        return $this;
    }

}