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✏️ Editing: Append.php

<?php
/*
 * This file is part of the ManageWP Worker plugin.
 *
 * (c) ManageWP LLC <contact@managewp.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Append stream.
 */
class MWP_Stream_Append implements MWP_Stream_Interface
{

/**
     * @var MWP_Stream_Interface[]
     */
    private $streams = array();

private $current = 0;

/**
     * Add a stream to the AppendStream
     *
     * @param MWP_Stream_Interface $stream Stream to append. Must be readable.
     */
    public function addStream(MWP_Stream_Interface $stream)
    {
        $this->streams[] = $stream;
    }

/**
     * @return bool
     */
    public function isSeekable()
    {
        return false;
    }

/**
     * {@inheritdoc}
     */
    public function seek($offset, $whence = SEEK_SET)
    {
        return false;
    }

/**
     * {@inheritdoc}
     */
    public function eof()
    {
        return $this->isAtLastStream() && $this->getCurrentStream()->eof();
    }

/**
     * {@inheritdoc}
     */
    public function read($length)
    {
        $data = '';

while (!$this->eof()) {
            while ($this->getCurrentStream()->eof() && !$this->eof()) {
                $this->moveToNextStream();
            }

$currentStreamData = $this->getCurrentStream()->read($length);
            $data .= $currentStreamData;
            $length -= strlen($currentStreamData);

if ($length <= 0) {
                break;
            }
        }

return $data;
    }

/**
     * {@inheritdoc}
     */
    public function close()
    {
        foreach ($this->streams as $stream) {
            $stream->close();
        }
    }

/**
     * Tell is not supported.
     */
    public function tell()
    {
        return false;
    }

public function __toString()
    {
        $buffer = '';

while (!$this->eof()) {
            $buffer .= $this->read(1048576);
        }

return $buffer;
    }

private function moveToNextStream()
    {
        if ($this->current >= count($this->streams)) {
            return false;
        }

$this->current++;

return true;
    }

private function isAtLastStream()
    {
        return $this->current === count($this->streams) - 1;
    }

private function getCurrentStream()
    {
        return $this->streams[$this->current];
    }
}

Sid Gifari From Gifari Industries - BD Cyber Security Team