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<?php
namespace Sabre\DAV\PartialUpdate;
use Sabre\DAV;
/**
* This interface provides a way to modify only part of a target resource
* It may be used to update a file chunk, upload big a file into smaller
* chunks or resume an upload
*
* @copyright Copyright (C) 2007-2013 fruux GmbH (https://fruux.com/).
* @author Jean-Tiare LE BIGOT (http://www.jtlebi.fr/)
* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
*/
interface IFile extends DAV\IFile {
/**
* Updates the data at a given offset
*
* The data argument is a readable stream resource.
* The offset argument is an integer describing the offset. Contrary to
* what's sent in the request, the offset here is a 0-based index.
*
* After a successful put operation, you may choose to return an ETag. The
* etag must always be surrounded by double-quotes. These quotes must
* appear in the actual string you're returning.
*
* Clients may use the ETag from a PUT request to later on make sure that
* when they update the file, the contents haven't changed in the mean
* time.
*
* @param resource $data
* @param integer $offset
* @return string|null
*/
function putRange($data, $offset);
}
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