File.php
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File.php
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	<?php

	namespace Sabre\DAV\FS;

	use Sabre\DAV;

	/**
	* 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\IFile {

	/**
	* Updates the data
	*
	* @param resource $data
	* @return void
	*/
	function put($data) {

	file_put_contents($this->path, $data);
	clearstatcache(true, $this->path);

	}

	/**
	* Returns the data
	*
	* @return resource
	*/
	function get() {

	return fopen($this->path, 'r');

	}

	/**
	* Delete the current file
	*
	* @return void
	*/
	function delete() {

	unlink($this->path);

	}

	/**
	* Returns the size of the node, in bytes
	*
	* @return int
	*/
	function getSize() {

	return filesize($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 mixed
	*/
	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 mixed
	*/
	function getContentType() {

	return null;

	}

	}