/lenasys/trunk : contents of codeigniter/system/libraries/Cache/drivers/Cache

: (revision 19.1.5)

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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2006 - 2012 EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 2.0
 * @filesource	
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter Memcached Caching Class 
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Core
 * @author		ExpressionEngine Dev Team
 * @link		
 */

class CI_Cache_file extends CI_Driver {

	protected $_cache_path;

	/**
	 * Constructor
	 */
	public function __construct()
	{
		$CI =& get_instance();
		$CI->load->helper('file');
		
		$path = $CI->config->item('cache_path');
	
		$this->_cache_path = ($path == '') ? APPPATH.'cache/' : $path;
	}

	// ------------------------------------------------------------------------

	/**
	 * Fetch from cache
	 *
	 * @param 	mixed		unique key id
	 * @return 	mixed		data on success/false on failure
	 */
	public function get($id)
	{
		if ( ! file_exists($this->_cache_path.$id))
		{
			return FALSE;
		}
		
		$data = read_file($this->_cache_path.$id);
		$data = unserialize($data);
		
		if (time() >  $data['time'] + $data['ttl'])
		{
			unlink($this->_cache_path.$id);
			return FALSE;
		}
		
		return $data['data'];
	}

	// ------------------------------------------------------------------------

	/**
	 * Save into cache
	 *
	 * @param 	string		unique key
	 * @param 	mixed		data to store
	 * @param 	int			length of time (in seconds) the cache is valid 
	 *						- Default is 60 seconds
	 * @return 	boolean		true on success/false on failure
	 */
	public function save($id, $data, $ttl = 60)
	{		
		$contents = array(
				'time'		=> time(),
				'ttl'		=> $ttl,			
				'data'		=> $data
			);
		
		if (write_file($this->_cache_path.$id, serialize($contents)))
		{
			@chmod($this->_cache_path.$id, 0777);
			return TRUE;			
		}

		return FALSE;
	}

	// ------------------------------------------------------------------------

	/**
	 * Delete from Cache
	 *
	 * @param 	mixed		unique identifier of item in cache
	 * @return 	boolean		true on success/false on failure
	 */
	public function delete($id)
	{
		return unlink($this->_cache_path.$id);
	}

	// ------------------------------------------------------------------------

	/**
	 * Clean the Cache
	 *
	 * @return 	boolean		false on failure/true on success
	 */	
	public function clean()
	{
		return delete_files($this->_cache_path);
	}

	// ------------------------------------------------------------------------

	/**
	 * Cache Info
	 *
	 * Not supported by file-based caching
	 *
	 * @param 	string	user/filehits
	 * @return 	mixed 	FALSE
	 */
	public function cache_info($type = NULL)
	{
		return get_dir_file_info($this->_cache_path);
	}

	// ------------------------------------------------------------------------

	/**
	 * Get Cache Metadata
	 *
	 * @param 	mixed		key to get cache metadata on
	 * @return 	mixed		FALSE on failure, array on success.
	 */
	public function get_metadata($id)
	{
		if ( ! file_exists($this->_cache_path.$id))
		{
			return FALSE;
		}

		$data = read_file($this->_cache_path.$id);
		$data = unserialize($data);

		if (is_array($data))
		{
			$mtime = filemtime($this->_cache_path.$id);

			if ( ! isset($data['ttl']))
			{
				return FALSE;
			}

			return array(
				'expire'	=> $mtime + $data['ttl'],
				'mtime'		=> $mtime
			);
		}

		return FALSE;
	}

	// ------------------------------------------------------------------------

	/**
	 * Is supported
	 *
	 * In the file driver, check to see that the cache directory is indeed writable
	 * 
	 * @return boolean
	 */
	public function is_supported()
	{
		return is_really_writable($this->_cache_path);
	}

	// ------------------------------------------------------------------------
}
// End Class

/* End of file Cache_file.php */
/* Location: ./system/libraries/Cache/drivers/Cache_file.php */

20.1.1 by galaxyAbstractor * Added an simple admin panel to the codeviewer-cmssy stuff	1	<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
	2	/**
	3	* CodeIgniter
	4	*
	5	* An open source application development framework for PHP 4.3.2 or newer
	6	*
	7	* @package CodeIgniter
	8	* @author ExpressionEngine Dev Team
	9	* @copyright Copyright (c) 2006 - 2012 EllisLab, Inc.
	10	* @license http://codeigniter.com/user_guide/license.html
	11	* @link http://codeigniter.com
	12	* @since Version 2.0
	13	* @filesource
	14	*/
	15
	16	// ------------------------------------------------------------------------
	17
	18	/**
	19	* CodeIgniter Memcached Caching Class
	20	*
	21	* @package CodeIgniter
	22	* @subpackage Libraries
	23	* @category Core
	24	* @author ExpressionEngine Dev Team
	25	* @link
	26	*/
	27
	28	class CI_Cache_file extends CI_Driver {
	29
	30	protected $_cache_path;
	31
	32	/**
	33	* Constructor
	34	*/
	35	public function __construct()
	36	{
	37	$CI =& get_instance();
	38	$CI->load->helper('file');
	39
	40	$path = $CI->config->item('cache_path');
	41
	42	$this->_cache_path = ($path == '') ? APPPATH.'cache/' : $path;
	43	}
	44
	45	// ------------------------------------------------------------------------
	46
	47	/**
	48	* Fetch from cache
	49	*
	50	* @param mixed unique key id
	51	* @return mixed data on success/false on failure
	52	*/
	53	public function get($id)
	54	{
	55	if ( ! file_exists($this->_cache_path.$id))
	56	{
	57	return FALSE;
	58	}
	59
	60	$data = read_file($this->_cache_path.$id);
	61	$data = unserialize($data);
	62
	63	if (time() > $data['time'] + $data['ttl'])
	64	{
65	unlink($this->_cache_path.$id);
66	return FALSE;
67	}
68
69	return $data['data'];
70	}
71
72	// ------------------------------------------------------------------------
73
74	/**
75	* Save into cache
76	*
77	* @param string unique key
78	* @param mixed data to store
79	* @param int length of time (in seconds) the cache is valid
80	* - Default is 60 seconds
81	* @return boolean true on success/false on failure
82	*/
83	public function save($id, $data, $ttl = 60)
84	{
85	$contents = array(
86	'time' => time(),
87	'ttl' => $ttl,
88	'data' => $data
89	);
90
91	if (write_file($this->_cache_path.$id, serialize($contents)))
92	{
93	@chmod($this->_cache_path.$id, 0777);
94	return TRUE;
95	}
96
97	return FALSE;
98	}
99
100	// ------------------------------------------------------------------------
101
102	/**
103	* Delete from Cache
104	*
105	* @param mixed unique identifier of item in cache
106	* @return boolean true on success/false on failure
107	*/
108	public function delete($id)
109	{
110	return unlink($this->_cache_path.$id);
111	}
112
113	// ------------------------------------------------------------------------
114
115	/**
116	* Clean the Cache
117	*
118	* @return boolean false on failure/true on success
119	*/
120	public function clean()
121	{
122	return delete_files($this->_cache_path);
123	}
124
125	// ------------------------------------------------------------------------
126
127	/**
128	* Cache Info
129	*
130	* Not supported by file-based caching
131	*
132	* @param string user/filehits
133	* @return mixed FALSE
134	*/
135	public function cache_info($type = NULL)
136	{
137	return get_dir_file_info($this->_cache_path);
138	}
139
140	// ------------------------------------------------------------------------
141
142	/**
143	* Get Cache Metadata
144	*
145	* @param mixed key to get cache metadata on
146	* @return mixed FALSE on failure, array on success.
147	*/
148	public function get_metadata($id)
149	{
150	if ( ! file_exists($this->_cache_path.$id))
151	{
152	return FALSE;
153	}
154
155	$data = read_file($this->_cache_path.$id);
156	$data = unserialize($data);
157
158	if (is_array($data))
159	{
160	$mtime = filemtime($this->_cache_path.$id);
161
162	if ( ! isset($data['ttl']))
163	{
164	return FALSE;
165	}
166
167	return array(
168	'expire' => $mtime + $data['ttl'],
169	'mtime' => $mtime
170	);
171	}
172
173	return FALSE;
174	}
175
176	// ------------------------------------------------------------------------
177
178	/**
179	* Is supported
180	*
181	* In the file driver, check to see that the cache directory is indeed writable
182	*
183	* @return boolean
184	*/
185	public function is_supported()
186	{
187	return is_really_writable($this->_cache_path);
188	}
189
190	// ------------------------------------------------------------------------
191	}
192	// End Class
193
194	/* End of file Cache_file.php */
195	/* Location: ./system/libraries/Cache/drivers/Cache_file.php */