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110 lines
2.9 KiB
PHP
110 lines
2.9 KiB
PHP
<?php
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namespace Sabre\DAV;
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/**
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* Collection class
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*
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* This is a helper class, that should aid in getting collections 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 Collection extends Node implements ICollection {
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/**
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* Returns a child object, by its name.
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*
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* This method makes use of the getChildren method to grab all the child
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* nodes, and compares the name.
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* Generally its wise to override this, as this can usually be optimized
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*
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* This method must throw Sabre\DAV\Exception\NotFound if the node does not
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* exist.
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*
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* @param string $name
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* @throws Exception\NotFound
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* @return INode
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*/
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function getChild($name) {
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foreach ($this->getChildren() as $child) {
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if ($child->getName() === $name) return $child;
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}
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throw new Exception\NotFound('File not found: ' . $name);
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}
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/**
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* Checks is a child-node exists.
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*
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* It is generally a good idea to try and override this. Usually it can be optimized.
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*
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* @param string $name
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* @return bool
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*/
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function childExists($name) {
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try {
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$this->getChild($name);
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return true;
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} catch (Exception\NotFound $e) {
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return false;
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}
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}
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/**
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* Creates a new file in the directory
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*
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* Data will either be supplied as a stream resource, or in certain cases
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* as a string. Keep in mind that you may have to support either.
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*
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* After successful creation of the file, you may choose to return the ETag
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* of the new file here.
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*
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* The returned ETag must be surrounded by double-quotes (The quotes should
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* be part of the actual string).
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*
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* If you cannot accurately determine the ETag, you should not return it.
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* If you don't store the file exactly as-is (you're transforming it
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* somehow) you should also not return an ETag.
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*
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* This means that if a subsequent GET to this new file does not exactly
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* return the same contents of what was submitted here, you are strongly
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* recommended to omit the ETag.
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*
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* @param string $name Name of the file
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* @param resource|string $data Initial payload
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* @return null|string
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*/
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function createFile($name, $data = null) {
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throw new Exception\Forbidden('Permission denied to create file (filename ' . $name . ')');
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}
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/**
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* Creates a new subdirectory
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*
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* @param string $name
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* @throws Exception\Forbidden
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* @return void
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*/
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function createDirectory($name) {
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throw new Exception\Forbidden('Permission denied to create directory');
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}
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}
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