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<?php
/**
* Configuration definition, defines directives and their defaults.
*/
class HTMLPurifier_ConfigSchema {
/**
* Defaults of the directives and namespaces.
* @note This shares the exact same structure as HTMLPurifier_Config::$conf
*/
public $defaults = array();
/**
* The default property list. Do not edit this property list.
*/
public $defaultPlist;
/**
* Definition of the directives. The structure of this is:
*
* array(
* 'Namespace' => array(
* 'Directive' => new stdclass(),
* )
* )
*
* The stdclass may have the following properties:
*
* - If isAlias isn't set:
* - type: Integer type of directive, see HTMLPurifier_VarParser for definitions
* - allow_null: If set, this directive allows null values
* - aliases: If set, an associative array of value aliases to real values
* - allowed: If set, a lookup array of allowed (string) values
* - If isAlias is set:
* - namespace: Namespace this directive aliases to
* - name: Directive name this directive aliases to
*
* In certain degenerate cases, stdclass will actually be an integer. In
* that case, the value is equivalent to an stdclass with the type
* property set to the integer. If the integer is negative, type is
* equal to the absolute value of integer, and allow_null is true.
*
* This class is friendly with HTMLPurifier_Config. If you need introspection
* about the schema, you're better of using the ConfigSchema_Interchange,
* which uses more memory but has much richer information.
*/
public $info = array();
/**
* Application-wide singleton
*/
static protected $singleton;
public function __construct() {
$this->defaultPlist = new HTMLPurifier_PropertyList();
}
/**
* Unserializes the default ConfigSchema.
*/
public static function makeFromSerial() {
return unserialize(file_get_contents(HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema.ser'));
}
/**
* Retrieves an instance of the application-wide configuration definition.
*/
public static function instance($prototype = null) {
if ($prototype !== null) {
HTMLPurifier_ConfigSchema::$singleton = $prototype;
} elseif (HTMLPurifier_ConfigSchema::$singleton === null || $prototype === true) {
HTMLPurifier_ConfigSchema::$singleton = HTMLPurifier_ConfigSchema::makeFromSerial();
}
return HTMLPurifier_ConfigSchema::$singleton;
}
/**
* Defines a directive for configuration
* @warning Will fail of directive's namespace is defined.
* @warning This method's signature is slightly different from the legacy
* define() static method! Beware!
* @param $namespace Namespace the directive is in
* @param $name Key of directive
* @param $default Default value of directive
* @param $type Allowed type of the directive. See
* HTMLPurifier_DirectiveDef::$type for allowed values
* @param $allow_null Whether or not to allow null values
*/
public function add($namespace, $name, $default, $type, $allow_null) {
$obj = new stdclass();
$obj->type = is_int($type) ? $type : HTMLPurifier_VarParser::$types[$type];
if ($allow_null) $obj->allow_null = true;
$this->info[$namespace][$name] = $obj;
$this->defaults[$namespace][$name] = $default;
$this->defaultPlist->set("$namespace.$name", $default);
}
/**
* Defines a namespace for directives to be put into.
* @warning This is slightly different from the corresponding static
* method.
* @param $namespace Namespace's name
*/
public function addNamespace($namespace) {
$this->info[$namespace] = array();
$this->defaults[$namespace] = array();
}
/**
* Defines a directive value alias.
*
* Directive value aliases are convenient for developers because it lets
* them set a directive to several values and get the same result.
* @param $namespace Directive's namespace
* @param $name Name of Directive
* @param $aliases Hash of aliased values to the real alias
*/
public function addValueAliases($namespace, $name, $aliases) {
if (!isset($this->info[$namespace][$name]->aliases)) {
$this->info[$namespace][$name]->aliases = array();
}
foreach ($aliases as $alias => $real) {
$this->info[$namespace][$name]->aliases[$alias] = $real;
}
}
/**
* Defines a set of allowed values for a directive.
* @warning This is slightly different from the corresponding static
* method definition.
* @param $namespace Namespace of directive
* @param $name Name of directive
* @param $allowed Lookup array of allowed values
*/
public function addAllowedValues($namespace, $name, $allowed) {
$this->info[$namespace][$name]->allowed = $allowed;
}
/**
* Defines a directive alias for backwards compatibility
* @param $namespace
* @param $name Directive that will be aliased
* @param $new_namespace
* @param $new_name Directive that the alias will be to
*/
public function addAlias($namespace, $name, $new_namespace, $new_name) {
$obj = new stdclass;
$obj->namespace = $new_namespace;
$obj->name = $new_name;
$obj->isAlias = true;
$this->info[$namespace][$name] = $obj;
}
/**
* Replaces any stdclass that only has the type property with type integer.
*/
public function postProcess() {
foreach ($this->info as $namespace => $info) {
foreach ($info as $directive => $v) {
if (count((array) $v) == 1) {
$this->info[$namespace][$directive] = $v->type;
} elseif (count((array) $v) == 2 && isset($v->allow_null)) {
$this->info[$namespace][$directive] = -$v->type;
}
}
}
}
// DEPRECATED METHODS
/** @see HTMLPurifier_ConfigSchema->set() */
public static function define($namespace, $name, $default, $type, $description) {
HTMLPurifier_ConfigSchema::deprecated(__METHOD__);
$type_values = explode('/', $type, 2);
$type = $type_values[0];
$modifier = isset($type_values[1]) ? $type_values[1] : false;
$allow_null = ($modifier === 'null');
$def = HTMLPurifier_ConfigSchema::instance();
$def->add($namespace, $name, $default, $type, $allow_null);
}
/** @see HTMLPurifier_ConfigSchema->addNamespace() */
public static function defineNamespace($namespace, $description) {
HTMLPurifier_ConfigSchema::deprecated(__METHOD__);
$def = HTMLPurifier_ConfigSchema::instance();
$def->addNamespace($namespace);
}
/** @see HTMLPurifier_ConfigSchema->addValueAliases() */
public static function defineValueAliases($namespace, $name, $aliases) {
HTMLPurifier_ConfigSchema::deprecated(__METHOD__);
$def = HTMLPurifier_ConfigSchema::instance();
$def->addValueAliases($namespace, $name, $aliases);
}
/** @see HTMLPurifier_ConfigSchema->addAllowedValues() */
public static function defineAllowedValues($namespace, $name, $allowed_values) {
HTMLPurifier_ConfigSchema::deprecated(__METHOD__);
$allowed = array();
foreach ($allowed_values as $value) {
$allowed[$value] = true;
}
$def = HTMLPurifier_ConfigSchema::instance();
$def->addAllowedValues($namespace, $name, $allowed);
}
/** @see HTMLPurifier_ConfigSchema->addAlias() */
public static function defineAlias($namespace, $name, $new_namespace, $new_name) {
HTMLPurifier_ConfigSchema::deprecated(__METHOD__);
$def = HTMLPurifier_ConfigSchema::instance();
$def->addAlias($namespace, $name, $new_namespace, $new_name);
}
/** @deprecated, use HTMLPurifier_VarParser->parse() */
public function validate($a, $b, $c = false) {
trigger_error("HTMLPurifier_ConfigSchema->validate deprecated, use HTMLPurifier_VarParser->parse instead", E_USER_NOTICE);
$parser = new HTMLPurifier_VarParser();
return $parser->parse($a, $b, $c);
}
/**
* Throws an E_USER_NOTICE stating that a method is deprecated.
*/
private static function deprecated($method) {
trigger_error("Static HTMLPurifier_ConfigSchema::$method deprecated, use add*() method instead", E_USER_NOTICE);
}
}
// vim: et sw=4 sts=4