/**
* This creates an XML object from the specified driver.
* Specify the driver name, or if there is no specific driver, the root node name
* @param string $driver [optional] Driver Name
* @param string $root_node [optional] Root Node name. Force the root node name. Must be used if no driver nor element is specified.
* @param string $element [optional] XML string or file to generate XML from. Must be used if no driver nor root_node is specified.
* @return XML XML object
*/
public static function factory($driver = NULL, $root_node = NULL, $element = NULL)
{
if ($driver)
{
// Let's attempt to generate a new instance of the subclass corresponding to the driver provided
$class = 'XML_Driver_'.ucfirst($driver);
// Register a new meta object
XML::$_metas[strtolower($class)] = $meta = new XML_Meta;
// Override the meta with driver-specific attributes
call_user_func(array($class, "initialize"), $meta);
// Set content type to default if it is not already set, and report it as initialized
$meta->content_type("text/xml")->set_initialized();
return new $class($element, $root_node);
}
else
{
// Register a new meta object in the root node
XML::$_metas["xml"] = $meta = new XML_Meta;
// Set content type to default if it is not already set, and report it as initialized
$meta->content_type("text/xml")->set_initialized();
return new XML($element, $root_node);
}
}
protected static function initialize(XML_Meta $meta)
{
$meta ->content_type("application/xrds+xml")
->nodes (
array(
"XRDS" => array("namespace" => 'xri://$xrds', "prefix" => "xrds", "attributes" => array("xmlns" => 'xri://$xrd*($v*2.0)')),
"LocalID" => array("filter" => "normalize_uri"),
"Delegate" => array("filter" => "normalize_uri", "namespace" => "http://openid.net/xmlns/1.0", "prefix" => "openid"),
"URI" => array("filter" => "normalize_uri"),
)
);
}
protected static function initialize(XML_Meta $meta)
{
$meta ->content_type("application/rss+xml")
->nodes (
array(
"rss" => array("attributes" => array("version" => "2.0")),
"link" => array("filter" => "normalize_uri"),
"docs" => array("filter" => "normalize_uri"),
"guid" => array("filter" => "normalize_uri"),
"pubDate" => array("filter" => "normalize_date"),
"lastBuildDate" => array("filter" => "normalize_date"),
)
);
}
protected static function initialize(XML_Meta $meta)
{
$meta ->content_type("application/atom+xml")
->nodes (
array(
"feed" => array("namespace" => "http://www.w3.org/2005/Atom"),
"entry" => array("namespace" => "http://www.w3.org/2005/Atom"),
"href" => array("filter" => "normalize_uri"),
"logo" => array("filter" => "normalize_uri"),
"icon" => array("filter" => "normalize_uri"),
"id" => array("filter" => "normalize_uri"),
"updated" => array("filter" => "normalize_datetime"),
"published" => array("filter" => "normalize_datetime"),
"startDate" => array("filter" => "normalize_date"),
'endDate' => array("filter" => "normalize_date"),
)
);
}
