/legacy/includes/objects/cache.php

<?php

/*

+--------------------------------------------------------------------------

|  NovaBoard

|  ========================================

|  By The NovaBoard team

|  Released under the Artistic License 2.0

|  http://www.novaboard.net

|  ========================================

|  cache.php - Cache class to handle loading/saving of repeat data.

*/



if (!defined('NOVA_RUN'))

{

	exit('<h1>ACCESS DENIED</h1>You cannot access this file directly.');

}



class cache

{

	private

		$ROOT		= '',

		$db_prefix	= '',

		$cache		= array()

	;

	

	/*

	Constructor function

	

	@param	string	$root	: Path to novaboard's root folder.

	@return	null

*/



	public function __construct($root, $db_prefix)

	{

		$this->ROOT			= $root;

		$this->db_prefix	= $db_prefix;

	}

	

	/*

	Deletes the specified cache file.

	

	@param	string	$file	: The name of the file to delete.

	@return	bool			: True/false depending on successful deletion.

*/

	

	public function delete($file)

	{

		if (file_exists($this->ROOT . 'cache/' . $file . '.php'))

		{

			unlink($this->ROOT . 'cache/' . $file . '.php');

			

			if (isset($this->cache[$file]))

			{

				unset($this->cache[$file]);

			}

			

			return true;

		}

		else

		{

			return false;

		}

	}

	

	/*

	Loads the given cache file.

	

	@param	string	$file		: The file to load.

	@param	bool	$remember	: Whether to save the info to an array (for when a file is loaded more than once).

	@return	array				: The contents of the cache file.

*/



	public function load($file, $remember = false)

	{

		if (in_array($file, $this->cache))

		{

			return $this->cache[$file];

		}

		else

		{

			if (!file_exists($this->ROOT . 'cache/' . $file . '.php'))

			{

				return ($remember) ? $this->cache[$file] = $this->reCache($file) : $this->reCache($file);

			}

			else

			{

				include $this->ROOT . 'cache/' . $file . '.php';

				

				if (empty($cache))

				{

					return ($remember) ? $this->cache[$file] = $this->reCache($file) : $this->reCache($file);

				}

				

				return ($remember) ? $this->cache[$file] = $cache : $cache;

			}

		}

	}

	

	/*

	Saves the given array to a cache file.

	

	@param	string	$file		: The name to give the file.

	@param	array		$info	: The contents to add to the file.

	@return	bool				: True if file was created, false otherwise.

*/

	

	public function save($file, $info = '')

	{

		$file = $this->ROOT . 'cache/' . $file . '.php';

		

		if (is_writeable($this->ROOT . 'cache/'))

		{

			$content = '<?php' . "\n";

			

			if ($info != '')

			{

				$content .= '$cache = ' . var_export($info, true) . ';';

			}

			else

			{

				$content .= '$cache = array();';

			}

			

			$content .= "\n" . '?>';

			

			return (file_put_contents($file, $content)) ? true : false;

		}

		else

		{

			return false;

		}

	}

	

	/*

	Re-Caches the specified file.

	

	@param	string	$file	: The name of the file.

	@return	array			: Information retrieved from the DB.

*/

	

	private function reCache($file)

	{

		/*

		Recache for board settings

	*/

		

		if ($file == 'settings')

		{

			$query	= mysql_query('SELECT * FROM ' . $this->db_prefix . 'settings');

			$row	= mysql_fetch_assoc($query);

			

			$this->save('settings', $row);

			

			return $row;

		}

		

		/*

		Word censors in posts.

	*/

	

		elseif ($file == 'censor')

		{

			$censor	= array();

			$query	= mysql_query('SELECT * FROM ' . $this->db_prefix . 'censor');

			

			while ($row = mysql_fetch_assoc($query))

			{

				$censor[$row['row']] = $row;

			}

			

			$this->save('censor', $censor);

			return $censor;

		}

		

		/*

		User groups

	*/

	

		elseif ($file == 'groups')

		{

			$groups	= array();

			$query	= mysql_query('SELECT * FROM ' . $this->db_prefix . 'groups');

			

			while ($row	= mysql_fetch_assoc($query))

			{

				$groups[$row['group_id']] = $row;

			}

			

			$this->save($file, $groups);

			return $row;

		}

		

		/*

		Moderator permissions

	*/

	

		elseif ($file == 'moderators')

		{

			$moderators	= array();

			$query		= mysql_query('SELECT * FROM ' . $this->db_prefix . 'moderators');

			

			while ($row = mysql_fetch_assoc($query))

			{

				$moderators[$row['member_id']][$row['forum_id']] = $row;

			}

			

			$this->save('moderators', $moderators);

			return $moderators;

		}

		

		/*

		Hooks

	*/

	

		elseif ($file == 'hooks')

		{

			$hooks	= array();

			$query	= mysql_query('

				SELECT h.file, h.location, m.module_name

				FROM ' . $this->db_prefix . 'modules_hooks h

					INNER JOIN ' . $this->db_prefix . 'modules m

					ON h.module_id = m.id

				WHERE m.installed = 1

			');

			

			while ($row = mysql_fetch_assoc($query))

			{

				$hooks[$row['file']][$row['location']][] = $row;

			}

			

			$this->save('hooks', $hooks);

			return $hooks;

		}

		

		/*

		Emoticons/smilies (whatever you wanna call them).

	*/

	

		elseif (strpos($file, 'emoticons_') !== false)

		{

			$theme		= str_replace('emoticons_', '', $file);

			$smilies	= array();

			$query219	= mysql_query('

				SELECT row, code, link

				FROM ' . $this->db_prefix . 'smilies

				WHERE emoticon_on = 1 AND code != "" AND link != "" AND theme = "' . $theme . '"

				ORDER BY row DESC

			');

			

			while ($row = mysql_fetch_assoc($query219))

			{

				$smilies[$row['row']] = $row;

			}

			

			$this->save($file, $smilies);

			return $smilies;

		}

	}

}

?>