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File.php
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File.php
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<?php
namespace Sabre\DAV\FSExt;
use Sabre\DAV;
use Sabre\DAV\FS\Node;
/**
* File class
*
* @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class File extends Node implements DAV\PartialUpdate\IPatchSupport {
/**
* Updates the data
*
* Data is a readable stream resource.
*
* @param resource|string $data
* @return string
*/
function put($data) {
file_put_contents($this->path, $data);
clearstatcache(true, $this->path);
return $this->getETag();
}
/**
* Updates the file based on a range specification.
*
* The first argument is the data, which is either a readable stream
* resource or a string.
*
* The second argument is the type of update we're doing.
* This is either:
* * 1. append
* * 2. update based on a start byte
* * 3. update based on an end byte
*;
* The third argument is the start or end byte.
*
* 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|string $data
* @param int $rangeType
* @param int $offset
* @return string|null
*/
function patch($data, $rangeType, $offset = null) {
switch ($rangeType) {
case 1 :
$f = fopen($this->path, 'a');
break;
case 2 :
$f = fopen($this->path, 'c');
fseek($f, $offset);
break;
case 3 :
$f = fopen($this->path, 'c');
fseek($f, $offset, SEEK_END);
break;
}
if (is_string($data)) {
fwrite($f, $data);
} else {
stream_copy_to_stream($data, $f);
}
fclose($f);
clearstatcache(true, $this->path);
return $this->getETag();
}
/**
* Returns the data
*
* @return resource
*/
function get() {
return fopen($this->path, 'r');
}
/**
* Delete the current file
*
* @return bool
*/
function delete() {
return unlink($this->path);
}
/**
* Returns the ETag for a file
*
* An ETag is a unique identifier representing the current version of the file. If the file changes, the ETag MUST change.
* The ETag is an arbitrary string, but MUST be surrounded by double-quotes.
*
* Return null if the ETag can not effectively be determined
*
* @return string|null
*/
function getETag() {
return '"' . sha1(
fileinode($this->path) .
filesize($this->path) .
filemtime($this->path)
) . '"';
}
/**
* Returns the mime-type for a file
*
* If null is returned, we'll assume application/octet-stream
*
* @return string|null
*/
function getContentType() {
return null;
}
/**
* Returns the size of the file, in bytes
*
* @return int
*/
function getSize() {
return filesize($this->path);
}
}

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