122 lines
3.1 KiB
PHP
122 lines
3.1 KiB
PHP
<?php
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/**
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* Configuration Class File for PICKLES
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*
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* PHP version 5
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*
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* Licensed under the GNU General Public License Version 3
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* Redistribution of these files must retain the above copyright notice.
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*
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* @package pickles
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* @author Josh Sherman <josh@phpwithpickles.org>
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* @copyright Copyright 2007-2010, Gravity Boulevard, LLC
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* @license http://www.gnu.org/licenses/gpl.html GPL v3
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* @link http://phpwithpickles.org
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* @todo Add support for .php and .ini config files (auto scan directory?)
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*/
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/**
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* Config Class
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*
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* Handles loading a configuration file and parsing the data for
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* any public nodes that need to be made available to the viewer.
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*
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* @usage <code>$config = new Config($filename); // $filename is optional, default = ../config.xml</code>
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*/
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class Config extends Object
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{
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/**
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* Instance of the Config object
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*
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* @static
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* @access private
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* @var object
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*/
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private static $instance;
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/**
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* Constructor
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*
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* Calls the parent constructor and loads the pass file
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*
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* @param string $file Filename of the config file (optional)
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*/
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public function __construct($file = '../config.xml')
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{
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parent::__construct();
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$this->load($file);
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}
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/**
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* Loads a configuration file
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*
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* Handles the potential loading of the configuration file and
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* sanitizing the boolean strings into actual boolean values.
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*
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* @param string $file Filename of the XML file to be loaded
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* @return boolean Success of the load process
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* @todo Add the ability to load in multiple configuration files.
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*/
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public function load($file)
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{
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// Makes sure the file is legit on the surface
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if (file_exists($file) && is_file($file) && is_readable($file))
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{
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// Pulls the contents of the file to allow for validation
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$contents = trim(file_get_contents($file));
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// Checks that the file contents isn't empty and that the config node is present
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if ($contents != '' && substr($contents, 0, 8) == '<config>' && substr($contents, -9) == '</config>')
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{
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/**
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* @todo LIBXML_NOCDATA is 5.1+ and I want PICKLES to
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* be 5.0+ compatible. Potential fix is to read
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* the file in as a string, and if it has CDATA,
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* throw an internal warning.
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*/
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$data = simplexml_load_string($contents, 'SimpleXMLElement', LIBXML_NOCDATA);
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// Loops through the top level nodes to find public nodes
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$variables = get_object_vars($data);
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if (is_array($variables))
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{
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foreach ($variables as $key => $value)
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{
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if (is_object($value) && isset($value->attributes()->public) && $value->attributes()->public == true)
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{
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$this->_public[$key] = $value;
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}
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$this->$key = $value;
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}
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}
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return true;
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}
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}
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}
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/**
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* Get instance of the object
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*
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* Instantiates a new object if one isn't already available, then
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* returns the instance.
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*
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* @static
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* @return object self::$instance instance of the Config
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*/
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public static function getInstance()
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{
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if (!isset(self::$instance) || empty(self::$instance))
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{
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self::$instance = new Config();
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}
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return self::$instance;
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}
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}
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?>
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