Current File : //proc/1857783/root/var/www/tif-dev/wp-content/plugins/worker/src/MWP/Stream/Buffer.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.
*/
class MWP_Stream_Buffer
{
private $hwm;
private $buffer = '';
/**
* @param int $hwm High water mark, representing the preferred maximum
* buffer size. If the size of the buffer exceeds the high
* water mark, then calls to write will continue to succeed
* but will return false to inform writers to slow down
* until the buffer has been drained by reading from it.
*/
public function __construct($hwm = 16384)
{
$this->hwm = $hwm;
}
public function close()
{
$this->buffer = '';
}
public function isSeekable()
{
return false;
}
public function seek($offset, $whence = SEEK_SET)
{
return false;
}
public function eof()
{
return strlen($this->buffer) === 0;
}
public function tell()
{
return false;
}
/**
* Reads data from the buffer.
*
* @param $length
*
* @return string
*/
public function read($length)
{
$currentLength = strlen($this->buffer);
if ($length >= $currentLength) {
// No need to slice the buffer because we don't have enough data.
$result = $this->buffer;
$this->buffer = '';
} else {
// Slice up the result to provide a subset of the buffer.
$result = substr($this->buffer, 0, $length);
$this->buffer = substr($this->buffer, $length);
}
return $result;
}
/**
* Writes data to the buffer.
*
* @param $string
*
* @return bool|int
*/
public function write($string)
{
$this->buffer .= $string;
if (strlen($this->buffer) >= $this->hwm) {
return false;
}
return strlen($string);
}
}
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