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<?php
/**
* @version $Id: registry.php 14401 2010-01-26 14:10:00Z louis $
* @package Joomla.Framework
* @subpackage Registry
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
//Register the session storage class with the loader
JLoader::register('JRegistryFormat', dirname(__FILE__).DS.'format.php');
/**
* JRegistry class
*
* @package Joomla.Framework
* @subpackage Registry
* @since 1.5
*/
class JRegistry extends JObject
{
/**
* Default NameSpace
* @var string
*/
var $_defaultNameSpace = null;
/**
* Registry Object
* - actually an array of namespace objects
* @var array
*/
var $_registry = array ();
/**
* Constructor
*
* @access protected
* @param string $namespace Default registry namespace
* @return void
* @since 1.5
*/
function __construct($namespace = 'default')
{
$this->_defaultNameSpace = $namespace;
$this->makeNameSpace($namespace);
}
/**
* Returns a reference to a global JRegistry object, only creating it
* if it doesn't already exist.
*
* This method must be invoked as:
* <pre>$registry =& JRegistry::getInstance($id[, $namespace]);</pre>
*
* @static
* @param string $id An ID for the registry instance
* @param string $namespace The default namespace for the registry object [optional]
* @return object The JRegistry object.
* @since 1.5
*/
function &getInstance($id, $namespace = 'default')
{
static $instances;
if (!isset ($instances)) {
$instances = array ();
}
if (empty ($instances[$id])) {
$instances[$id] = new JRegistry($namespace);
}
return $instances[$id];
}
/**
* Create a namespace
*
* @access public
* @param string $namespace Name of the namespace to create
* @return boolean True on success
* @since 1.5
*/
function makeNameSpace($namespace)
{
$this->_registry[$namespace] = array('data' => new stdClass());
return true;
}
/**
* Get the list of namespaces
*
* @access public
* @return array List of namespaces
* @since 1.5
*/
function getNameSpaces()
{
return array_keys($this->_registry);
}
/**
* Get a registry value
*
* @access public
* @param string $regpath Registry path (e.g. joomla.content.showauthor)
* @param mixed $default Optional default value
* @return mixed Value of entry or null
* @since 1.5
*/
function getValue($regpath, $default=null)
{
$result = $default;
// Explode the registry path into an array
if ($nodes = explode('.', $regpath))
{
// Get the namespace
//$namespace = array_shift($nodes);
$count = count($nodes);
if ($count < 2) {
$namespace = $this->_defaultNameSpace;
$nodes[1] = $nodes[0];
} else {
$namespace = $nodes[0];
}
if (isset($this->_registry[$namespace])) {
$ns = & $this->_registry[$namespace]['data'];
$pathNodes = $count - 1;
//for ($i = 0; $i < $pathNodes; $i ++) {
for ($i = 1; $i < $pathNodes; $i ++) {
if((isset($ns->$nodes[$i]))) $ns =& $ns->$nodes[$i];
}
if(isset($ns->$nodes[$i])) {
$result = $ns->$nodes[$i];
}
}
}
return $result;
}
/**
* Set a registry value
*
* @access public
* @param string $regpath Registry Path (e.g. joomla.content.showauthor)
* @param mixed $value Value of entry
* @return mixed Value of old value or boolean false if operation failed
* @since 1.5
*/
function setValue($regpath, $value)
{
// Explode the registry path into an array
$nodes = explode('.', $regpath);
// Get the namespace
$count = count($nodes);
if ($count < 2) {
$namespace = $this->_defaultNameSpace;
} else {
$namespace = array_shift($nodes);
$count--;
}
if (!isset($this->_registry[$namespace])) {
$this->makeNameSpace($namespace);
}
$ns = & $this->_registry[$namespace]['data'];
$pathNodes = $count - 1;
if ($pathNodes < 0) {
$pathNodes = 0;
}
for ($i = 0; $i < $pathNodes; $i ++)
{
// If any node along the registry path does not exist, create it
if (!isset($ns->$nodes[$i])) {
$ns->$nodes[$i] = new stdClass();
}
$ns =& $ns->$nodes[$i];
}
// Get the old value if exists so we can return it
$ns->$nodes[$i] =& $value;
return $ns->$nodes[$i];
}
/**
* Load a associative array of values into the default namespace
*
* @access public
* @param array $array Associative array of value to load
* @param string $namepsace The name of the namespace
* @return boolean True on success
* @since 1.5
*/
function loadArray($array, $namespace = null)
{
// If namespace is not set, get the default namespace
if ($namespace == null) {
$namespace = $this->_defaultNameSpace;
}
if (!isset($this->_registry[$namespace])) {
// If namespace does not exist, make it and load the data
$this->makeNameSpace($namespace);
}
// Load the variables into the registry's default namespace.
foreach ($array as $k => $v)
{
$this->_registry[$namespace]['data']->$k = $v;
}
return true;
}
/**
* Load the public variables of the object into the default namespace.
*
* @access public
* @param object $object The object holding the public vars to load
* @param string $namespace Namespace to load the INI string into [optional]
* @return boolean True on success
* @since 1.5
*/
function loadObject(&$object, $namespace = null)
{
// If namespace is not set, get the default namespace
if ($namespace == null) {
$namespace = $this->_defaultNameSpace;
}
if (!isset($this->_registry[$namespace])) {
// If namespace does not exist, make it and load the data
$this->makeNameSpace($namespace);
}
/*
* We want to leave groups that are already in the namespace and add the
* groups loaded into the namespace. This overwrites any existing group
* with the same name
*/
if (is_object( $object ))
{
foreach (get_object_vars($object) as $k => $v) {
if (substr($k, 0,1) != '_' || $k == '_name') {
$this->_registry[$namespace]['data']->$k = $v;
}
}
}
return true;
}
/**
* Load the contents of a file into the registry
*
* @access public
* @param string $file Path to file to load
* @param string $format Format of the file [optional: defaults to INI]
* @param string $namespace Namespace to load the INI string into [optional]
* @return boolean True on success
* @since 1.5
*/
function loadFile($file, $format = 'INI', $namespace = null)
{
// Load a file into the given namespace [or default namespace if not given]
$handler =& JRegistryFormat::getInstance($format);
// If namespace is not set, get the default namespace
if ($namespace == null) {
$namespace = $this->_defaultNameSpace;
}
// Get the contents of the file
jimport('joomla.filesystem.file');
$data = JFile::read($file);
if (!isset($this->_registry[$namespace]))
{
// If namespace does not exist, make it and load the data
$this->makeNameSpace($namespace);
$this->_registry[$namespace]['data'] = $handler->stringToObject($data);
}
else
{
// Get the data in object format
$ns = $handler->stringToObject($data);
/*
* We want to leave groups that are already in the namespace and add the
* groups loaded into the namespace. This overwrites any existing group
* with the same name
*/
foreach (get_object_vars($ns) as $k => $v) {
$this->_registry[$namespace]['data']->$k = $v;
}
}
return true;
}
/**
* Load an XML string into the registry into the given namespace [or default if a namespace is not given]
*
* @access public
* @param string $data XML formatted string to load into the registry
* @param string $namespace Namespace to load the XML string into [optional]
* @return boolean True on success
* @since 1.5
*/
function loadXML($data, $namespace = null)
{
// Load a string into the given namespace [or default namespace if not given]
$handler =& JRegistryFormat::getInstance('XML');
// If namespace is not set, get the default namespace
if ($namespace == null) {
$namespace = $this->_defaultNameSpace;
}
if (!isset($this->_registry[$namespace])) {
// If namespace does not exist, make it and load the data
$this->makeNameSpace($namespace);
$this->_registry[$namespace]['data'] =& $handler->stringToObject($data);
} else {
// Get the data in object format
$ns =& $handler->stringToObject($data);
/*
* We want to leave groups that are already in the namespace and add the
* groups loaded into the namespace. This overwrites any existing group
* with the same name
*/
foreach (get_object_vars($ns) as $k => $v) {
$this->_registry[$namespace]['data']->$k = $v;
}
}
return true;
}
/**
* Load an INI string into the registry into the given namespace [or default if a namespace is not given]
*
* @access public
* @param string $data INI formatted string to load into the registry
* @param string $namespace Namespace to load the INI string into [optional]
* @return boolean True on success
* @since 1.5
*/
function loadINI($data, $namespace = null)
{
// Load a string into the given namespace [or default namespace if not given]
$handler =& JRegistryFormat::getInstance('INI');
// If namespace is not set, get the default namespace
if ($namespace == null) {
$namespace = $this->_defaultNameSpace;
}
if (!isset($this->_registry[$namespace])) {
// If namespace does not exist, make it and load the data
$this->makeNameSpace($namespace);
$this->_registry[$namespace]['data'] =& $handler->stringToObject($data);
} else {
// Get the data in object format
$ns = $handler->stringToObject($data);
/*
* We want to leave groups that are already in the namespace and add the
* groups loaded into the namespace. This overwrites any existing group
* with the same name
*/
foreach (get_object_vars($ns) as $k => $v) {
$this->_registry[$namespace]['data']->$k = $v;
}
}
return true;
}
/**
* Merge a JRegistry object into this one
*
* @access public
* @param object $source Source JRegistry object ot merge
* @return boolean True on success
* @since 1.5
*/
function merge(&$source)
{
if (is_a($source, 'JRegistry'))
{
$sns = $source->getNameSpaces();
foreach ($sns as $ns)
{
if (!isset($this->_registry[$ns]))
{
// If namespace does not exist, make it and load the data
$this->makeNameSpace($ns);
}
// Load the variables into the registry's default namespace.
foreach ($source->toArray($ns) as $k => $v)
{
if ($v != null) {
$this->_registry[$ns]['data']->$k = $v;
}
}
}
return true;
}
return false;
}
/**
* Get a namespace in a given string format
*
* @access public
* @param string $format Format to return the string in
* @param string $namespace Namespace to return [optional: null returns the default namespace]
* @param mixed $params Parameters used by the formatter, see formatters for more info
* @return string Namespace in string format
* @since 1.5
*/
function toString($format = 'INI', $namespace = null, $params = null)
{
// Return a namespace in a given format
$handler =& JRegistryFormat::getInstance($format);
// If namespace is not set, get the default namespace
if ($namespace == null) {
$namespace = $this->_defaultNameSpace;
}
// Get the namespace
$ns = & $this->_registry[$namespace]['data'];
return $handler->objectToString($ns, $params);
}
/**
* Transforms a namespace to an array
*
* @access public
* @param string $namespace Namespace to return [optional: null returns the default namespace]
* @return array An associative array holding the namespace data
* @since 1.5
*/
function toArray($namespace = null)
{
// If namespace is not set, get the default namespace
if ($namespace == null) {
$namespace = $this->_defaultNameSpace;
}
// Get the namespace
$ns = & $this->_registry[$namespace]['data'];
$array = array();
foreach (get_object_vars( $ns ) as $k => $v) {
$array[$k] = $v;
}
return $array;
}
/**
* Transforms a namespace to an object
*
* @access public
* @param string $namespace Namespace to return [optional: null returns the default namespace]
* @return object An an object holding the namespace data
* @since 1.5
*/
function toObject($namespace = null)
{
// If namespace is not set, get the default namespace
if ($namespace == null) {
$namespace = $this->_defaultNameSpace;
}
// Get the namespace
$ns = & $this->_registry[$namespace]['data'];
return $ns;
}
function __clone()
{
$this->_registry = unserialize(serialize($this->_registry));
}
}