<?php

/**

* Copyright 2017 Google Inc.

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

namespace Google\Cloud\Core;

use GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**

* Represents a Blob value.

*

* Blobs can be used to store binary across data various Google Cloud services.

*

* Example:

* ```

* use Google\Cloud\Core\Blob;

*

* $blob = new Blob(file_get_contents(__DIR__ .'/family-photo.jpg'));

* ```

*

* ```

* // Get the value of a blob by casting to a string.

*

* echo (string) $blob;

* ```

*/

class Blob

{

/**

* @var mixed

*/

private $value;

/**

* Create a blob

*

* @param string|resource|StreamInterface $value The blob value

*/

public function __construct($value)

{

$this->value = Psr7\stream_for($value);

}

/**

* Get the blob contents as a stream

*

* Example:

* ```

* $value = $blob->get();

* ```

*

* @return StreamInterface

*/

public function get()

{

return $this->value;

}

/**

* Cast the blob to a string

*

* @access private

* @return string

*/

public function __toString()

{

return (string) $this->value;

}

}