sforkowany z mirror/friendica
217 wiersze
7.3 KiB
PHP
217 wiersze
7.3 KiB
PHP
![]() |
<?php
|
||
|
|
||
|
/**
|
||
|
* Structure that stores an HTML element definition. Used by
|
||
|
* HTMLPurifier_HTMLDefinition and HTMLPurifier_HTMLModule.
|
||
|
* @note This class is inspected by HTMLPurifier_Printer_HTMLDefinition.
|
||
|
* Please update that class too.
|
||
|
* @warning If you add new properties to this class, you MUST update
|
||
|
* the mergeIn() method.
|
||
|
*/
|
||
|
class HTMLPurifier_ElementDef
|
||
|
{
|
||
|
/**
|
||
|
* Does the definition work by itself, or is it created solely
|
||
|
* for the purpose of merging into another definition?
|
||
![]() |
* @type bool
|
||
![]() |
*/
|
||
|
public $standalone = true;
|
||
|
|
||
|
/**
|
||
![]() |
* Associative array of attribute name to HTMLPurifier_AttrDef.
|
||
|
* @type array
|
||
![]() |
* @note Before being processed by HTMLPurifier_AttrCollections
|
||
|
* when modules are finalized during
|
||
|
* HTMLPurifier_HTMLDefinition->setup(), this array may also
|
||
|
* contain an array at index 0 that indicates which attribute
|
||
|
* collections to load into the full array. It may also
|
||
|
* contain string indentifiers in lieu of HTMLPurifier_AttrDef,
|
||
|
* see HTMLPurifier_AttrTypes on how they are expanded during
|
||
|
* HTMLPurifier_HTMLDefinition->setup() processing.
|
||
|
*/
|
||
|
public $attr = array();
|
||
|
|
||
![]() |
// XXX: Design note: currently, it's not possible to override
|
||
|
// previously defined AttrTransforms without messing around with
|
||
|
// the final generated config. This is by design; a previous version
|
||
|
// used an associated list of attr_transform, but it was extremely
|
||
|
// easy to accidentally override other attribute transforms by
|
||
|
// forgetting to specify an index (and just using 0.) While we
|
||
|
// could check this by checking the index number and complaining,
|
||
|
// there is a second problem which is that it is not at all easy to
|
||
|
// tell when something is getting overridden. Combine this with a
|
||
|
// codebase where this isn't really being used, and it's perfect for
|
||
|
// nuking.
|
||
|
|
||
![]() |
/**
|
||
![]() |
* List of tags HTMLPurifier_AttrTransform to be done before validation.
|
||
|
* @type array
|
||
![]() |
*/
|
||
|
public $attr_transform_pre = array();
|
||
|
|
||
|
/**
|
||
![]() |
* List of tags HTMLPurifier_AttrTransform to be done after validation.
|
||
|
* @type array
|
||
![]() |
*/
|
||
|
public $attr_transform_post = array();
|
||
|
|
||
|
/**
|
||
|
* HTMLPurifier_ChildDef of this tag.
|
||
![]() |
* @type HTMLPurifier_ChildDef
|
||
![]() |
*/
|
||
|
public $child;
|
||
|
|
||
|
/**
|
||
![]() |
* Abstract string representation of internal ChildDef rules.
|
||
|
* @see HTMLPurifier_ContentSets for how this is parsed and then transformed
|
||
![]() |
* into an HTMLPurifier_ChildDef.
|
||
|
* @warning This is a temporary variable that is not available after
|
||
|
* being processed by HTMLDefinition
|
||
![]() |
* @type string
|
||
![]() |
*/
|
||
|
public $content_model;
|
||
|
|
||
|
/**
|
||
|
* Value of $child->type, used to determine which ChildDef to use,
|
||
|
* used in combination with $content_model.
|
||
|
* @warning This must be lowercase
|
||
|
* @warning This is a temporary variable that is not available after
|
||
|
* being processed by HTMLDefinition
|
||
![]() |
* @type string
|
||
![]() |
*/
|
||
|
public $content_model_type;
|
||
|
|
||
|
/**
|
||
|
* Does the element have a content model (#PCDATA | Inline)*? This
|
||
|
* is important for chameleon ins and del processing in
|
||
|
* HTMLPurifier_ChildDef_Chameleon. Dynamically set: modules don't
|
||
|
* have to worry about this one.
|
||
![]() |
* @type bool
|
||
![]() |
*/
|
||
|
public $descendants_are_inline = false;
|
||
|
|
||
|
/**
|
||
![]() |
* List of the names of required attributes this element has.
|
||
|
* Dynamically populated by HTMLPurifier_HTMLDefinition::getElement()
|
||
|
* @type array
|
||
![]() |
*/
|
||
|
public $required_attr = array();
|
||
|
|
||
|
/**
|
||
|
* Lookup table of tags excluded from all descendants of this tag.
|
||
![]() |
* @type array
|
||
![]() |
* @note SGML permits exclusions for all descendants, but this is
|
||
|
* not possible with DTDs or XML Schemas. W3C has elected to
|
||
|
* use complicated compositions of content_models to simulate
|
||
|
* exclusion for children, but we go the simpler, SGML-style
|
||
|
* route of flat-out exclusions, which correctly apply to
|
||
|
* all descendants and not just children. Note that the XHTML
|
||
|
* Modularization Abstract Modules are blithely unaware of such
|
||
|
* distinctions.
|
||
|
*/
|
||
|
public $excludes = array();
|
||
|
|
||
|
/**
|
||
|
* This tag is explicitly auto-closed by the following tags.
|
||
![]() |
* @type array
|
||
![]() |
*/
|
||
|
public $autoclose = array();
|
||
|
|
||
|
/**
|
||
|
* If a foreign element is found in this element, test if it is
|
||
|
* allowed by this sub-element; if it is, instead of closing the
|
||
|
* current element, place it inside this element.
|
||
![]() |
* @type string
|
||
![]() |
*/
|
||
|
public $wrap;
|
||
|
|
||
|
/**
|
||
|
* Whether or not this is a formatting element affected by the
|
||
|
* "Active Formatting Elements" algorithm.
|
||
![]() |
* @type bool
|
||
![]() |
*/
|
||
|
public $formatting;
|
||
|
|
||
|
/**
|
||
|
* Low-level factory constructor for creating new standalone element defs
|
||
|
*/
|
||
![]() |
public static function create($content_model, $content_model_type, $attr)
|
||
|
{
|
||
![]() |
$def = new HTMLPurifier_ElementDef();
|
||
|
$def->content_model = $content_model;
|
||
|
$def->content_model_type = $content_model_type;
|
||
|
$def->attr = $attr;
|
||
|
return $def;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Merges the values of another element definition into this one.
|
||
|
* Values from the new element def take precedence if a value is
|
||
|
* not mergeable.
|
||
![]() |
* @param HTMLPurifier_ElementDef $def
|
||
![]() |
*/
|
||
![]() |
public function mergeIn($def)
|
||
|
{
|
||
![]() |
// later keys takes precedence
|
||
![]() |
foreach ($def->attr as $k => $v) {
|
||
![]() |
if ($k === 0) {
|
||
|
// merge in the includes
|
||
|
// sorry, no way to override an include
|
||
|
foreach ($v as $v2) {
|
||
|
$this->attr[0][] = $v2;
|
||
|
}
|
||
|
continue;
|
||
|
}
|
||
|
if ($v === false) {
|
||
![]() |
if (isset($this->attr[$k])) {
|
||
|
unset($this->attr[$k]);
|
||
|
}
|
||
![]() |
continue;
|
||
|
}
|
||
|
$this->attr[$k] = $v;
|
||
|
}
|
||
|
$this->_mergeAssocArray($this->excludes, $def->excludes);
|
||
![]() |
$this->attr_transform_pre = array_merge($this->attr_transform_pre, $def->attr_transform_pre);
|
||
|
$this->attr_transform_post = array_merge($this->attr_transform_post, $def->attr_transform_post);
|
||
![]() |
|
||
![]() |
if (!empty($def->content_model)) {
|
||
![]() |
$this->content_model =
|
||
|
str_replace("#SUPER", $this->content_model, $def->content_model);
|
||
|
$this->child = false;
|
||
|
}
|
||
![]() |
if (!empty($def->content_model_type)) {
|
||
![]() |
$this->content_model_type = $def->content_model_type;
|
||
|
$this->child = false;
|
||
|
}
|
||
![]() |
if (!is_null($def->child)) {
|
||
|
$this->child = $def->child;
|
||
|
}
|
||
|
if (!is_null($def->formatting)) {
|
||
|
$this->formatting = $def->formatting;
|
||
|
}
|
||
|
if ($def->descendants_are_inline) {
|
||
|
$this->descendants_are_inline = $def->descendants_are_inline;
|
||
|
}
|
||
![]() |
}
|
||
|
|
||
|
/**
|
||
|
* Merges one array into another, removes values which equal false
|
||
|
* @param $a1 Array by reference that is merged into
|
||
|
* @param $a2 Array that merges into $a1
|
||
|
*/
|
||
![]() |
private function _mergeAssocArray(&$a1, $a2)
|
||
|
{
|
||
![]() |
foreach ($a2 as $k => $v) {
|
||
|
if ($v === false) {
|
||
![]() |
if (isset($a1[$k])) {
|
||
|
unset($a1[$k]);
|
||
|
}
|
||
![]() |
continue;
|
||
|
}
|
||
|
$a1[$k] = $v;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// vim: et sw=4 sts=4
|