<?php

namespace VirtualFileSystem\Structure;

use SplObjectStorage;

/**
 * Object representation of File.
 *
 * @author Michael Donat <michael.donat@me.com>
 * @package php-vfs
 */
class File extends Node
{
    /** @see http://man7.org/linux/man-pages/man2/lstat.2.html */
    const S_IFTYPE = 0100000;

    protected $data;

    /**
     * Resource with exclusive lock on this file
     * @var resource|null
     */
    private $exclusiveLock = null;

    /**
     * Resources with a shared lock on this file
     * @var SplObjectStorage
     */
    private $sharedLock;

    /**
     * @inherit
     * @param string $basename
     */
    public function __construct($basename)
    {
        parent::__construct($basename);
        $this->sharedLock = new SplObjectStorage;
    }

    /**
     * Returns contents size.
     *
     * @return int
     */
    public function size()
    {
        return strlen($this->data);
    }

    /**
     * Returns contents.
     *
     * @return null|string
     */
    public function data()
    {
        return $this->data;
    }

    /**
     * Sets contents.
     *
     * @param $data
     * @param null|string $data
     */
    public function setData($data)
    {
        $this->data = $data;
    }

    public function lock($resource, $operation)
    {
        if ($this->exclusiveLock === $resource) {
            $this->exclusiveLock = null;
        } else {
            $this->sharedLock->detach($resource);
        }

        if ($operation & LOCK_NB) {
            $operation -= LOCK_NB;
        }

        $unlock    = $operation === LOCK_UN;
        $exclusive = $operation === LOCK_EX;

        if ($unlock) {
            return true;
        }

        if ($this->exclusiveLock !== null) {
            return false;
        }

        if (!$exclusive) {
            $this->sharedLock->attach($resource);

            return true;
        }

        if ($this->sharedLock->count()) {
            return false;
        }

        $this->exclusiveLock = $resource;

        return true;
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MjkyMzI2NDY1MzIwMzUzNCA1MjU5NjQ2NDc4NDU3ODYgNDg0MTkxMzg0MDU2OTM1Ng==