mirror of
https://github.com/renbaoshuo/S2OJ.git
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96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
177 lines
5.8 KiB
PHP
177 lines
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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