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97 lines
2.3 KiB
PHP
97 lines
2.3 KiB
PHP
<?php
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namespace Sabre\DAV;
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/**
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* File class
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*
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* This is a helper class, that should aid in getting file classes setup.
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* Most of its methods are implemented, and throw permission denied exceptions
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*
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* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
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* @author Evert Pot (http://evertpot.com/)
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* @license http://sabre.io/license/ Modified BSD License
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*/
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abstract class File extends Node implements IFile {
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/**
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* Replaces the contents of the file.
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*
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* The data argument is a readable stream resource.
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*
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* After a successful put operation, you may choose to return an ETag. The
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* etag must always be surrounded by double-quotes. These quotes must
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* appear in the actual string you're returning.
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*
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* Clients may use the ETag from a PUT request to later on make sure that
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* when they update the file, the contents haven't changed in the mean
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* time.
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*
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* If you don't plan to store the file byte-by-byte, and you return a
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* different object on a subsequent GET you are strongly recommended to not
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* return an ETag, and just return null.
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*
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* @param string|resource $data
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* @return string|null
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*/
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function put($data) {
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throw new Exception\Forbidden('Permission denied to change data');
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}
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/**
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* Returns the data
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*
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* This method may either return a string or a readable stream resource
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*
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* @return mixed
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*/
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function get() {
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throw new Exception\Forbidden('Permission denied to read this file');
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}
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/**
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* Returns the size of the file, in bytes.
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*
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* @return int
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*/
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function getSize() {
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return 0;
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}
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/**
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* Returns the ETag for a file
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*
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* An ETag is a unique identifier representing the current version of the file. If the file changes, the ETag MUST change.
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* The ETag is an arbitrary string, but MUST be surrounded by double-quotes.
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*
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* Return null if the ETag can not effectively be determined
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*
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* @return string|null
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*/
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function getETag() {
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return null;
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}
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/**
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* Returns the mime-type for a file
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*
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* If null is returned, we'll assume application/octet-stream
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*
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* @return string|null
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*/
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function getContentType() {
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return null;
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}
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}
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