diff options
Diffstat (limited to '3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/Custom.php')
-rw-r--r-- | 3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/Custom.php | 192 |
1 files changed, 102 insertions, 90 deletions
diff --git a/3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/Custom.php b/3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/Custom.php index b7816c5ed..128132e96 100644 --- a/3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/Custom.php +++ b/3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/Custom.php @@ -1,90 +1,102 @@ -<?php
-
-/**
- * Custom validation class, accepts DTD child definitions
- *
- * @warning Currently this class is an all or nothing proposition, that is,
- * it will only give a bool return value.
- */
-class HTMLPurifier_ChildDef_Custom extends HTMLPurifier_ChildDef
-{
- public $type = 'custom';
- public $allow_empty = false;
- /**
- * Allowed child pattern as defined by the DTD
- */
- public $dtd_regex;
- /**
- * PCRE regex derived from $dtd_regex
- * @private
- */
- private $_pcre_regex;
- /**
- * @param $dtd_regex Allowed child pattern from the DTD
- */
- public function __construct($dtd_regex) {
- $this->dtd_regex = $dtd_regex;
- $this->_compileRegex();
- }
- /**
- * Compiles the PCRE regex from a DTD regex ($dtd_regex to $_pcre_regex)
- */
- protected function _compileRegex() {
- $raw = str_replace(' ', '', $this->dtd_regex);
- if ($raw{0} != '(') {
- $raw = "($raw)";
- }
- $el = '[#a-zA-Z0-9_.-]+';
- $reg = $raw;
-
- // COMPLICATED! AND MIGHT BE BUGGY! I HAVE NO CLUE WHAT I'M
- // DOING! Seriously: if there's problems, please report them.
-
- // collect all elements into the $elements array
- preg_match_all("/$el/", $reg, $matches);
- foreach ($matches[0] as $match) {
- $this->elements[$match] = true;
- }
-
- // setup all elements as parentheticals with leading commas
- $reg = preg_replace("/$el/", '(,\\0)', $reg);
-
- // remove commas when they were not solicited
- $reg = preg_replace("/([^,(|]\(+),/", '\\1', $reg);
-
- // remove all non-paranthetical commas: they are handled by first regex
- $reg = preg_replace("/,\(/", '(', $reg);
-
- $this->_pcre_regex = $reg;
- }
- public function validateChildren($tokens_of_children, $config, $context) {
- $list_of_children = '';
- $nesting = 0; // depth into the nest
- foreach ($tokens_of_children as $token) {
- if (!empty($token->is_whitespace)) continue;
-
- $is_child = ($nesting == 0); // direct
-
- if ($token instanceof HTMLPurifier_Token_Start) {
- $nesting++;
- } elseif ($token instanceof HTMLPurifier_Token_End) {
- $nesting--;
- }
-
- if ($is_child) {
- $list_of_children .= $token->name . ',';
- }
- }
- // add leading comma to deal with stray comma declarations
- $list_of_children = ',' . rtrim($list_of_children, ',');
- $okay =
- preg_match(
- '/^,?'.$this->_pcre_regex.'$/',
- $list_of_children
- );
-
- return (bool) $okay;
- }
-}
-
-// vim: et sw=4 sts=4
+<?php + +/** + * Custom validation class, accepts DTD child definitions + * + * @warning Currently this class is an all or nothing proposition, that is, + * it will only give a bool return value. + */ +class HTMLPurifier_ChildDef_Custom extends HTMLPurifier_ChildDef +{ + /** + * @type string + */ + public $type = 'custom'; + + /** + * @type bool + */ + public $allow_empty = false; + + /** + * Allowed child pattern as defined by the DTD. + * @type string + */ + public $dtd_regex; + + /** + * PCRE regex derived from $dtd_regex. + * @type string + */ + private $_pcre_regex; + + /** + * @param $dtd_regex Allowed child pattern from the DTD + */ + public function __construct($dtd_regex) + { + $this->dtd_regex = $dtd_regex; + $this->_compileRegex(); + } + + /** + * Compiles the PCRE regex from a DTD regex ($dtd_regex to $_pcre_regex) + */ + protected function _compileRegex() + { + $raw = str_replace(' ', '', $this->dtd_regex); + if ($raw{0} != '(') { + $raw = "($raw)"; + } + $el = '[#a-zA-Z0-9_.-]+'; + $reg = $raw; + + // COMPLICATED! AND MIGHT BE BUGGY! I HAVE NO CLUE WHAT I'M + // DOING! Seriously: if there's problems, please report them. + + // collect all elements into the $elements array + preg_match_all("/$el/", $reg, $matches); + foreach ($matches[0] as $match) { + $this->elements[$match] = true; + } + + // setup all elements as parentheticals with leading commas + $reg = preg_replace("/$el/", '(,\\0)', $reg); + + // remove commas when they were not solicited + $reg = preg_replace("/([^,(|]\(+),/", '\\1', $reg); + + // remove all non-paranthetical commas: they are handled by first regex + $reg = preg_replace("/,\(/", '(', $reg); + + $this->_pcre_regex = $reg; + } + + /** + * @param HTMLPurifier_Node[] $children + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function validateChildren($children, $config, $context) + { + $list_of_children = ''; + $nesting = 0; // depth into the nest + foreach ($children as $node) { + if (!empty($node->is_whitespace)) { + continue; + } + $list_of_children .= $node->name . ','; + } + // add leading comma to deal with stray comma declarations + $list_of_children = ',' . rtrim($list_of_children, ','); + $okay = + preg_match( + '/^,?' . $this->_pcre_regex . '$/', + $list_of_children + ); + return (bool)$okay; + } +} + +// vim: et sw=4 sts=4 |