Viewing file:  ResourceStream.php (2.34 KB) -rw-r--r--
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<?php
namespace AsyncAws\Core\Stream;
use AsyncAws\Core\Exception\InvalidArgument;
/**
* Convert a resource into a Stream.
*
* @author Jérémy Derussé <jeremy@derusse.com>
*
* @internal
*/
final class ResourceStream implements RequestStream
{
/**
* @var resource
*/
private $content;
private $chunkSize;
private function __construct($content, int $chunkSize = 64 * 1024)
{
$this->content = $content;
$this->chunkSize = $chunkSize;
}
public static function create($content, int $chunkSize = 64 * 1024): ResourceStream
{
if ($content instanceof self) {
return $content;
}
if (\is_resource($content)) {
if (!stream_get_meta_data($content)['seekable']) {
throw new InvalidArgument(sprintf('The give body is not seekable.'));
}
return new self($content, $chunkSize);
}
throw new InvalidArgument(sprintf('Expect content to be a "resource". "%s" given.', \is_object($content) ? \get_class($content) : \gettype($content)));
}
public function length(): ?int
{
return fstat($this->content)['size'] ?? null;
}
public function stringify(): string
{
if (-1 === fseek($this->content, 0)) {
throw new InvalidArgument('Unable to seek the content.');
}
return stream_get_contents($this->content);
}
public function getIterator(): \Traversable
{
if (-1 === fseek($this->content, 0)) {
throw new InvalidArgument('Unable to seek the content.');
}
while (!feof($this->content)) {
yield fread($this->content, $this->chunkSize);
}
}
/**
* @return resource
*/
public function getResource()
{
return $this->content;
}
public function hash(string $algo = 'sha256', bool $raw = false): string
{
$pos = ftell($this->content);
if ($pos > 0 && -1 === fseek($this->content, 0)) {
throw new InvalidArgument('Unable to seek the content.');
}
$ctx = hash_init($algo);
hash_update_stream($ctx, $this->content);
$out = hash_final($ctx, $raw);
if (-1 === fseek($this->content, $pos)) {
throw new InvalidArgument('Unable to seek the content.');
}
return $out;
}
}
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