vendor/facebook/graph-sdk/src/Facebook/FileUpload/FacebookFile.php

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<?php
/**
 * Copyright 2017 Facebook, Inc.
 *
 * You are hereby granted a non-exclusive, worldwide, royalty-free license to
 * use, copy, modify, and distribute this software in source code or binary
 * form for use in connection with the web services and APIs provided by
 * Facebook.
 *
 * As with any software that integrates with the Facebook platform, your use
 * of this software is subject to the Facebook Developer Principles and
 * Policies [http://developers.facebook.com/policy/]. This copyright notice
 * shall be included in all copies or substantial portions of the software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */
namespace Facebook\FileUpload;

use Facebook\Exceptions\FacebookSDKException;

/**
 * Class FacebookFile
 *
 * @package Facebook
 */
class FacebookFile
{
    /**
     * @var string The path to the file on the system.
     */
    protected $path;

    /**
     * @var int The maximum bytes to read. Defaults to -1 (read all the remaining buffer).
     */
    private $maxLength;

    /**
     * @var int Seek to the specified offset before reading. If this number is negative, no seeking will occur and reading will start from the current position.
     */
    private $offset;

    /**
     * @var resource The stream pointing to the file.
     */
    protected $stream;

    /**
     * Creates a new FacebookFile entity.
     *
     * @param string $filePath
     * @param int $maxLength
     * @param int $offset