sforkowany z mirror/friendica
177 wiersze
5.8 KiB
PHP
177 wiersze
5.8 KiB
PHP
<?php
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/**
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* Configuration definition, defines directives and their defaults.
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*/
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class HTMLPurifier_ConfigSchema
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{
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/**
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* Defaults of the directives and namespaces.
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* @type array
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* @note This shares the exact same structure as HTMLPurifier_Config::$conf
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*/
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public $defaults = array();
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/**
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* The default property list. Do not edit this property list.
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* @type array
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*/
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public $defaultPlist;
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/**
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* Definition of the directives.
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* The structure of this is:
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*
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* array(
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* 'Namespace' => array(
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* 'Directive' => new stdclass(),
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* )
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* )
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*
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* The stdclass may have the following properties:
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*
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* - If isAlias isn't set:
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* - type: Integer type of directive, see HTMLPurifier_VarParser for definitions
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* - allow_null: If set, this directive allows null values
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* - aliases: If set, an associative array of value aliases to real values
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* - allowed: If set, a lookup array of allowed (string) values
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* - If isAlias is set:
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* - namespace: Namespace this directive aliases to
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* - name: Directive name this directive aliases to
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*
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* In certain degenerate cases, stdclass will actually be an integer. In
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* that case, the value is equivalent to an stdclass with the type
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* property set to the integer. If the integer is negative, type is
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* equal to the absolute value of integer, and allow_null is true.
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*
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* This class is friendly with HTMLPurifier_Config. If you need introspection
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* about the schema, you're better of using the ConfigSchema_Interchange,
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* which uses more memory but has much richer information.
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* @type array
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*/
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public $info = array();
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/**
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* Application-wide singleton
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* @type HTMLPurifier_ConfigSchema
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*/
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protected static $singleton;
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public function __construct()
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{
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$this->defaultPlist = new HTMLPurifier_PropertyList();
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}
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/**
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* Unserializes the default ConfigSchema.
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* @return HTMLPurifier_ConfigSchema
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*/
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public static function makeFromSerial()
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{
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$contents = file_get_contents(HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema.ser');
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$r = unserialize($contents);
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if (!$r) {
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$hash = sha1($contents);
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trigger_error("Unserialization of configuration schema failed, sha1 of file was $hash", E_USER_ERROR);
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}
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return $r;
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}
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/**
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* Retrieves an instance of the application-wide configuration definition.
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* @param HTMLPurifier_ConfigSchema $prototype
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* @return HTMLPurifier_ConfigSchema
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*/
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public static function instance($prototype = null)
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{
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if ($prototype !== null) {
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HTMLPurifier_ConfigSchema::$singleton = $prototype;
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} elseif (HTMLPurifier_ConfigSchema::$singleton === null || $prototype === true) {
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HTMLPurifier_ConfigSchema::$singleton = HTMLPurifier_ConfigSchema::makeFromSerial();
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}
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return HTMLPurifier_ConfigSchema::$singleton;
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}
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/**
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* Defines a directive for configuration
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* @warning Will fail of directive's namespace is defined.
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* @warning This method's signature is slightly different from the legacy
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* define() static method! Beware!
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* @param string $key Name of directive
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* @param mixed $default Default value of directive
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* @param string $type Allowed type of the directive. See
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* HTMLPurifier_DirectiveDef::$type for allowed values
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* @param bool $allow_null Whether or not to allow null values
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*/
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public function add($key, $default, $type, $allow_null)
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{
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$obj = new stdclass();
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$obj->type = is_int($type) ? $type : HTMLPurifier_VarParser::$types[$type];
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if ($allow_null) {
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$obj->allow_null = true;
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}
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$this->info[$key] = $obj;
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$this->defaults[$key] = $default;
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$this->defaultPlist->set($key, $default);
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}
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/**
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* Defines a directive value alias.
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*
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* Directive value aliases are convenient for developers because it lets
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* them set a directive to several values and get the same result.
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* @param string $key Name of Directive
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* @param array $aliases Hash of aliased values to the real alias
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*/
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public function addValueAliases($key, $aliases)
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{
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if (!isset($this->info[$key]->aliases)) {
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$this->info[$key]->aliases = array();
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}
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foreach ($aliases as $alias => $real) {
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$this->info[$key]->aliases[$alias] = $real;
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}
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}
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/**
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* Defines a set of allowed values for a directive.
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* @warning This is slightly different from the corresponding static
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* method definition.
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* @param string $key Name of directive
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* @param array $allowed Lookup array of allowed values
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*/
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public function addAllowedValues($key, $allowed)
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{
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$this->info[$key]->allowed = $allowed;
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}
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/**
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* Defines a directive alias for backwards compatibility
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* @param string $key Directive that will be aliased
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* @param string $new_key Directive that the alias will be to
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*/
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public function addAlias($key, $new_key)
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{
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$obj = new stdclass;
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$obj->key = $new_key;
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$obj->isAlias = true;
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$this->info[$key] = $obj;
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}
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/**
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* Replaces any stdclass that only has the type property with type integer.
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*/
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public function postProcess()
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{
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foreach ($this->info as $key => $v) {
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if (count((array) $v) == 1) {
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$this->info[$key] = $v->type;
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} elseif (count((array) $v) == 2 && isset($v->allow_null)) {
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$this->info[$key] = -$v->type;
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}
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}
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}
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}
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// vim: et sw=4 sts=4
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