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htmlpurifier/library/HTMLPurifier/Strategy/RemoveForeignElements.php
Edward Z. Yang 145a51da5a Move out Stage 2 docs to correct class.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@141 48356398-32a2-884e-a903-53898d9a118a
2006-08-02 02:26:01 +00:00

63 lines
2.0 KiB
PHP

<?php
require_once 'HTMLPurifier/Strategy.php';
require_once 'HTMLPurifier/Definition.php';
require_once 'HTMLPurifier/Generator.php';
require_once 'HTMLPurifier/TagTransform.php';
/**
* Removes all unrecognized tags from the list of tokens.
*
* This strategy iterates through all the tokens and removes unrecognized
* tokens. If a token is not recognized but a TagTransform is defined for
* that element, the element will be transformed accordingly.
*/
class HTMLPurifier_Strategy_RemoveForeignElements extends HTMLPurifier_Strategy
{
var $generator;
var $definition;
function HTMLPurifier_Strategy_RemoveForeignElements() {
$this->generator = new HTMLPurifier_Generator();
$this->definition = HTMLPurifier_Definition::instance();
}
function execute($tokens) {
$result = array();
foreach($tokens as $token) {
if (!empty( $token->is_tag )) {
// DEFINITION CALL
if (isset($this->definition->info[$token->name])) {
// leave untouched
} elseif (
isset($this->definition->info_tag_transform[$token->name])
) {
// there is a transformation for this tag
// DEFINITION CALL
$token = $this->
definition->
info_tag_transform[$token->name]->
transform($token);
} else {
// invalid tag, generate HTML and insert in
$token = new HTMLPurifier_Token_Text(
$this->generator->generateFromToken($token)
);
}
} elseif ($token->type == 'comment') {
// strip comments
continue;
} elseif ($token->type == 'text') {
} else {
continue;
}
$result[] = $token;
}
return $result;
}
}
?>