Your IP : 3.15.214.230
<?php
namespace Bitrix\Main\Web\Http;
use Psr\Http\Message\StreamInterface;
use Bitrix\Main\ArgumentException;
class Stream implements StreamInterface
{
/**
* @var resource
*/
protected $resource;
/**
* @param string | resource | Stream $stream
* @param string $mode
* @throws ArgumentException
*/
public function __construct($stream, $mode = 'r')
{
if (is_resource($stream))
{
$this->resource = $stream;
}
elseif ($stream instanceof Stream)
{
$this->resource = $stream->resource;
}
elseif (is_string($stream))
{
$this->resource = fopen($stream, $mode);
}
else
{
throw new ArgumentException('Stream must be a Stream object, a string identifier, or a resource.', 'stream');
}
}
/**
* @inheritdoc
*/
public function __toString(): string
{
if (!$this->isReadable())
{
return '';
}
try
{
$this->rewind();
return $this->getContents();
}
catch (\RuntimeException)
{
return '';
}
}
/**
* @inheritdoc
*/
public function close(): void
{
if ($this->resource)
{
$resource = $this->detach();
fclose($resource);
}
}
/**
* @inheritdoc
*/
public function detach()
{
$resource = $this->resource;
$this->resource = null;
return $resource;
}
/**
* @inheritdoc
*/
public function getSize(): ?int
{
if ($this->resource !== null)
{
$stats = fstat($this->resource);
return $stats['size'];
}
return null;
}
/**
* @inheritdoc
*/
public function tell(): int
{
if (!$this->resource)
{
throw new \RuntimeException('No resource available, cannot tell position.');
}
$result = ftell($this->resource);
if ($result === false)
{
throw new \RuntimeException('Error occurred during tell operation.');
}
return $result;
}
/**
* @inheritdoc
*/
public function eof(): bool
{
if ($this->resource)
{
return feof($this->resource);
}
return true;
}
/**
* @inheritdoc
*/
public function isSeekable(): bool
{
if ($this->resource)
{
return $this->getMetadata('seekable');
}
return false;
}
/**
* @inheritdoc
*/
public function seek(int $offset, int $whence = SEEK_SET): void
{
if (!$this->resource)
{
throw new \RuntimeException('No resource available, cannot seek position.');
}
if (!$this->isSeekable())
{
throw new \RuntimeException('Stream is not seekable.');
}
$result = fseek($this->resource, $offset, $whence);
if ($result !== 0)
{
throw new \RuntimeException('Error seeking within stream.');
}
}
/**
* @inheritdoc
*/
public function rewind(): void
{
$this->seek(0);
}
/**
* @inheritdoc
*/
public function isWritable(): bool
{
if ($this->resource)
{
return is_writable($this->getMetadata('uri'));
}
return false;
}
/**
* @inheritdoc
*/
public function write(string $string): int
{
if (!$this->resource)
{
throw new \RuntimeException('No resource available, cannot write.');
}
$result = fwrite($this->resource, $string);
if ($result === false)
{
throw new \RuntimeException('Error writing to stream.');
}
return $result;
}
/**
* @inheritdoc
*/
public function isReadable(): bool
{
if ($this->resource)
{
$mode = $this->getMetadata('mode');
return (str_contains($mode, 'r') || str_contains($mode, '+'));
}
return false;
}
/**
* @inheritdoc
*/
public function read(int $length): string
{
if (!$this->resource)
{
throw new \RuntimeException('No resource available, cannot read.');
}
if (!$this->isReadable())
{
throw new \RuntimeException('Stream is not readable.');
}
$result = fread($this->resource, $length);
if ($result === false)
{
throw new \RuntimeException('Error reading stream.');
}
return $result;
}
/**
* @inheritdoc
*/
public function getContents(): string
{
if (!$this->isReadable())
{
return '';
}
$result = stream_get_contents($this->resource);
if ($result === false)
{
throw new \RuntimeException('Error reading stream.');
}
return $result;
}
/**
* @inheritdoc
*/
public function getMetadata(?string $key = null)
{
$meta = stream_get_meta_data($this->resource);
if ($key === null)
{
return $meta;
}
return $meta[$key] ?? null;
}
public function copyTo($stream)
{
$this->rewind();
return stream_copy_to_stream($this->resource, $stream);
}
}