165 lines
4.2 KiB
PHP
165 lines
4.2 KiB
PHP
<?php
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/**
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* SimplePie
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*
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* A PHP-Based RSS and Atom Feed Framework.
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* Takes the hard work out of managing a complete RSS/Atom solution.
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*
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* Copyright (c) 2004-2016, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* * Neither the name of the SimplePie Team nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package SimplePie
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* @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Sam Sneddon
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* @author Ryan McCue
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* @link http://simplepie.org/ SimplePie
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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*/
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/**
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* Caches data to the filesystem
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*
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* @package SimplePie
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* @subpackage Caching
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*/
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class SimplePie_Cache_File implements SimplePie_Cache_Base
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{
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/**
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* Location string
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*
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* @see SimplePie::$cache_location
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* @var string
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*/
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protected $location;
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/**
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* Filename
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*
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* @var string
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*/
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protected $filename;
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/**
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* File extension
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*
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* @var string
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*/
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protected $extension;
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/**
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* File path
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*
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* @var string
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*/
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protected $name;
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/**
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* Create a new cache object
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*
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* @param string $location Location string (from SimplePie::$cache_location)
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* @param string $name Unique ID for the cache
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* @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
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*/
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public function __construct($location, $name, $type)
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{
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$this->location = $location;
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$this->filename = $name;
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$this->extension = $type;
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$this->name = "$this->location/$this->filename.$this->extension";
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}
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/**
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* Save data to the cache
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*
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* @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
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* @return bool Successfulness
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*/
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public function save($data)
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{
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if (file_exists($this->name) && is_writable($this->name) || file_exists($this->location) && is_writable($this->location))
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{
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if ($data instanceof SimplePie)
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{
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$data = $data->data;
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}
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$data = serialize($data);
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return (bool) file_put_contents($this->name, $data);
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}
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return false;
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}
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/**
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* Retrieve the data saved to the cache
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*
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* @return array Data for SimplePie::$data
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*/
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public function load()
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{
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if (file_exists($this->name) && is_readable($this->name))
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{
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return unserialize(file_get_contents($this->name));
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}
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return false;
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}
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/**
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* Retrieve the last modified time for the cache
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*
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* @return int Timestamp
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*/
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public function mtime()
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{
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return @filemtime($this->name);
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}
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/**
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* Set the last modified time to the current time
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*
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* @return bool Success status
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*/
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public function touch()
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{
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return @touch($this->name);
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}
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/**
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* Remove the cache
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*
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* @return bool Success status
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*/
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public function unlink()
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{
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if (file_exists($this->name))
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{
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return unlink($this->name);
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}
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return false;
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}
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}
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