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<?php
/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
namespace AWS\CRT\IO;
use AWS\CRT\NativeResource as NativeResource;
final class InputStream extends NativeResource {
private $stream = null;
const SEEK_BEGIN = 0;
const SEEK_END = 2;
public function __construct($stream) {
parent::__construct();
$this->stream = $stream;
$options = self::$crt->input_stream_options_new();
// The stream implementation in native just converts the PHP stream into
// a native php_stream* and executes operations entirely in native
self::$crt->input_stream_options_set_user_data($options, $stream);
$this->acquire(self::$crt->input_stream_new($options));
self::$crt->input_stream_options_release($options);
}
public function __destruct() {
$this->release();
parent::__destruct();
}
public function eof() {
return self::$crt->input_stream_eof($this->native);
}
public function length() {
return self::$crt->input_stream_get_length($this->native);
}
public function read($length = 0) {
if ($length == 0) {
$length = $this->length();
}
return self::$crt->input_stream_read($this->native, $length);
}
public function seek($offset, $basis) {
return self::$crt->input_stream_seek($this->native, $offset, $basis);
}
}