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htmlpurifier/library/HTMLPurifier/Definition.php

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<?php
require_once 'HTMLPurifier/AttrDef.php';
require_once 'HTMLPurifier/AttrDef/Enum.php';
require_once 'HTMLPurifier/AttrDef/ID.php';
require_once 'HTMLPurifier/ChildDef.php';
require_once 'HTMLPurifier/Generator.php';
require_once 'HTMLPurifier/Token.php';
/**
* Defines the purified HTML type with large amounts of objects.
*
* The main function of this object is its $info array, which is an
* associative array of all the child and attribute definitions for
* each allowed element. It also contains special use information (always
* prefixed by info) for intelligent tag closing and global attributes.
*
* Planned improvements include attribute transformation objects as well as
* migration of auto-tag-closing from HTMLPurifier_Strategy_MakeWellFormed
* (these can likely just be extensions of ElementDef).
*
* After development drops off, the definition generation will be moved to
* a maintenance script and we will stipulate that definition be created
* by a factory method that unserializes a serialized version of Definition.
* Customization would entail copying the maintenance script, making the
* necessary changes, generating the serialized object, and then hooking it
* in via the factory method. We would also offer a LiveDefinition for
* automatic recompilation, suggesting that we would have a DefinitionGenerator.
*/
class HTMLPurifier_Definition
{
var $info = array();
// used solely by HTMLPurifier_Strategy_MakeWellFormed
var $info_closes_p = array(
// these are all block elements: blocks aren't allowed in P
'address' => true,
'blockquote' => true,
'dd' => true,
'dir' => true,
'div' => true,
'dl' => true,
'dt' => true,
'h1' => true,
'h2' => true,
'h3' => true,
'h4' => true,
'h5' => true,
'h6' => true,
'hr' => true,
'ol' => true,
'p' => true,
'pre' => true,
'table' => true,
'ul' => true
);
// used solely by HTMLPurifier_Strategy_ValidateAttributes
var $info_global_attr = array();
// used solely by HTMLPurifier_Strategy_FixNesting
var $info_parent = 'div';
function instance() {
static $instance = null;
if (!$instance) {
$instance = new HTMLPurifier_Definition();
$instance->setup();
}
return $instance;
}
function HTMLPurifier_Definition() {}
function setup() {
// emulates the structure of the DTD
$allowed_tags =
array(
'ins', 'del', 'blockquote', 'dd', 'li', 'div', 'em', 'strong',
'dfn', 'code', 'samp', 'kbd', 'var', 'cite', 'abbr', 'acronym',
'q', 'sub', 'tt', 'sup', 'i', 'b', 'big', 'small', 'u', 's',
'strike', 'bdo', 'span', 'dt', 'p', 'h1', 'h2', 'h3', 'h4',
'h5', 'h6', 'ol', 'ul', 'dl', 'address', 'img', 'br', 'hr',
'pre', 'a'
);
foreach ($allowed_tags as $tag) {
$this->info[$tag] = new HTMLPurifier_ElementDef();
}
// entities: prefixed with e_ and _ replaces .
// we don't use an array because that complicates interpolation
// strings are used instead of arrays because if you use arrays,
// you have to do some hideous manipulation with array_merge()
// these are condensed, remember, with bad stuff taken out
// transforms: font, menu, dir, center
// DON'T MONKEY AROUND THIS unless you know what you are doing
// and also know the assumptions the code makes about what this
// contains for optimization purposes (see fixNesting)
// child info
$e_special_extra = 'img';
$e_special_basic = 'br | span | bdo';
$e_special = "$e_special_basic | $e_special_extra";
$e_fontstyle_extra = 'big | small';
$e_fontstyle_basic = 'tt | i | b | u | s | strike';
$e_fontstyle = "$e_fontstyle_basic | $e_fontstyle_extra";
$e_phrase_extra = 'sub | sup';
$e_phrase_basic = 'em | strong | dfn | code | q | samp | kbd | var'.
' | cite | abbr | acronym';
$e_phrase = "$e_phrase_basic | $e_phrase_extra";
$e_inline_forms = ''; // humor the dtd
$e_misc_inline = 'ins | del';
$e_misc = "$e_misc_inline";
$e_inline = "a | $e_special | $e_fontstyle | $e_phrase".
" | $e_inline_forms";
// note the casing
$e_Inline = new HTMLPurifier_ChildDef_Optional("#PCDATA | $e_inline".
" | $e_misc_inline");
$e_heading = 'h1|h2|h3|h4|h5|h6';
$e_lists = 'ul | ol | dl';
$e_blocktext = 'pre | hr | blockquote | address';
$e_block = "p | $e_heading | div | $e_lists | $e_blocktext | table";
$e_Flow = new HTMLPurifier_ChildDef_Optional("#PCDATA | $e_block".
" | $e_inline | $e_misc");
$e_a_content = new HTMLPurifier_ChildDef_Optional("#PCDATA | $e_special".
" | $e_fontstyle | $e_phrase | $e_inline_forms | $e_misc_inline");
$e_pre_content = new HTMLPurifier_ChildDef_Optional("#PCDATA | a".
" | $e_special_basic | $e_fontstyle_basic | $e_phrase_basic".
" | $e_inline_forms | $e_misc_inline");
$e_form_content = new HTMLPurifier_ChildDef_Optional(''); //unused
$e_form_button_content = new HTMLPurifier_ChildDef_Optional(''); // unused
$this->info['ins']->child =
$this->info['del']->child =
$this->info['blockquote']->child =
$this->info['dd']->child =
$this->info['li']->child =
$this->info['div']->child = $e_Flow;
$this->info['em']->child =
$this->info['strong']->child =
$this->info['dfn']->child =
$this->info['code']->child =
$this->info['samp']->child =
$this->info['kbd']->child =
$this->info['var']->child =
$this->info['cite']->child =
$this->info['abbr']->child =
$this->info['acronym']->child =
$this->info['q']->child =
$this->info['sub']->child =
$this->info['tt']->child =
$this->info['sup']->child =
$this->info['i']->child =
$this->info['b']->child =
$this->info['big']->child =
$this->info['small']->child =
$this->info['u']->child =
$this->info['s']->child =
$this->info['strike']->child =
$this->info['bdo']->child =
$this->info['span']->child =
$this->info['dt']->child =
$this->info['p']->child =
$this->info['h1']->child =
$this->info['h2']->child =
$this->info['h3']->child =
$this->info['h4']->child =
$this->info['h5']->child =
$this->info['h6']->child = $e_Inline;
$this->info['ol']->child =
$this->info['ul']->child = new HTMLPurifier_ChildDef_Required('li');
$this->info['dl']->child = new HTMLPurifier_ChildDef_Required('dt|dd');
$this->info['address']->child =
new HTMLPurifier_ChildDef_Optional("#PCDATA | p | $e_inline".
" | $e_misc_inline");
$this->info['img']->child =
$this->info['br']->child =
$this->info['hr']->child = new HTMLPurifier_ChildDef_Empty();
$this->info['pre']->child = $e_pre_content;
$this->info['a']->child = $e_a_content;
// attribute info
// this doesn't include REQUIRED declarations, those are handled
// by the transform classes
// attrs, included in almost every single one except for a few
$this->info_global_attr = array(
// core attrs
'id' => new HTMLPurifier_AttrDef_ID(),
// i18n
'dir' => new HTMLPurifier_AttrDef_Enum(array('ltr','rtl'), false),
);
}
}
class HTMLPurifier_ElementDef
{
var $child;
var $attr = array();
}
?>