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<?php
namespace Laravel\SerializableClosure\Support;
#[\AllowDynamicProperties]
class ClosureStream
{
/**
* The stream protocol.
*/
const STREAM_PROTO = 'laravel-serializable-closure';
/**
* Checks if this stream is registered.
*
* @var bool
*/
protected static $isRegistered = false;
/**
* The stream content.
*
* @var string
*/
protected $content;
/**
* The stream content.
*
* @var int
*/
protected $length;
/**
* The stream pointer.
*
* @var int
*/
protected $pointer = 0;
/**
* Opens file or URL.
*
* @param string $path
* @param string $mode
* @param string $options
* @param string|null $opened_path
* @return bool
*/
public function stream_open($path, $mode, $options, &$opened_path)
{
$this->content = "<?php\nreturn ".substr($path, strlen(static::STREAM_PROTO.'://')).';';
$this->length = strlen($this->content);
return true;
}
/**
* Read from stream.
*
* @param int $count
* @return string
*/
public function stream_read($count)
{
$value = substr($this->content, $this->pointer, $count);
$this->pointer += $count;
return $value;
}
/**
* Tests for end-of-file on a file pointer.
*
* @return bool
*/
public function stream_eof()
{
return $this->pointer >= $this->length;
}
/**
* Change stream options.
*
* @param int $option
* @param int $arg1
* @param int $arg2
* @return bool
*/
public function stream_set_option($option, $arg1, $arg2)
{
return false;
}
/**
* Retrieve information about a file resource.
*
* @return array|bool
*/
public function stream_stat()
{
$stat = stat(__FILE__);
// @phpstan-ignore-next-line
$stat[7] = $stat['size'] = $this->length;
return $stat;
}
/**
* Retrieve information about a file.
*
* @param string $path
* @param int $flags
* @return array|bool
*/
public function url_stat($path, $flags)
{
$stat = stat(__FILE__);
// @phpstan-ignore-next-line
$stat[7] = $stat['size'] = $this->length;
return $stat;
}
/**
* Seeks to specific location in a stream.
*
* @param int $offset
* @param int $whence
* @return bool
*/
public function stream_seek($offset, $whence = SEEK_SET)
{
$crt = $this->pointer;
switch ($whence) {
case SEEK_SET:
$this->pointer = $offset;
break;
case SEEK_CUR:
$this->pointer += $offset;
break;
case SEEK_END:
$this->pointer = $this->length + $offset;
break;
}
if ($this->pointer < 0 || $this->pointer >= $this->length) {
$this->pointer = $crt;
return false;
}
return true;
}
/**
* Retrieve the current position of a stream.
*
* @return int
*/
public function stream_tell()
{
return $this->pointer;
}
/**
* Registers the stream.
*
* @return void
*/
public static function register()
{
if (! static::$isRegistered) {
static::$isRegistered = stream_wrapper_register(static::STREAM_PROTO, __CLASS__);
}
}
}