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-rw-r--r--3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/List.php120
1 files changed, 120 insertions, 0 deletions
diff --git a/3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/List.php b/3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/List.php
new file mode 100644
index 000000000..1c7cb4781
--- /dev/null
+++ b/3rdparty/htmlpurifier/library/HTMLPurifier/ChildDef/List.php
@@ -0,0 +1,120 @@
+<?php
+
+/**
+ * Definition for list containers ul and ol.
+ */
+class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef
+{
+ public $type = 'list';
+ // lying a little bit, so that we can handle ul and ol ourselves
+ // XXX: This whole business with 'wrap' is all a bit unsatisfactory
+ public $elements = array('li' => true, 'ul' => true, 'ol' => true);
+ public function validateChildren($tokens_of_children, $config, $context) {
+ // Flag for subclasses
+ $this->whitespace = false;
+
+ // if there are no tokens, delete parent node
+ if (empty($tokens_of_children)) return false;
+
+ // the new set of children
+ $result = array();
+
+ // current depth into the nest
+ $nesting = 0;
+
+ // a little sanity check to make sure it's not ALL whitespace
+ $all_whitespace = true;
+
+ $seen_li = false;
+ $need_close_li = false;
+
+ foreach ($tokens_of_children as $token) {
+ if (!empty($token->is_whitespace)) {
+ $result[] = $token;
+ continue;
+ }
+ $all_whitespace = false; // phew, we're not talking about whitespace
+
+ if ($nesting == 1 && $need_close_li) {
+ $result[] = new HTMLPurifier_Token_End('li');
+ $nesting--;
+ $need_close_li = false;
+ }
+
+ $is_child = ($nesting == 0);
+
+ if ($token instanceof HTMLPurifier_Token_Start) {
+ $nesting++;
+ } elseif ($token instanceof HTMLPurifier_Token_End) {
+ $nesting--;
+ }
+
+ if ($is_child) {
+ if ($token->name === 'li') {
+ // good
+ $seen_li = true;
+ } elseif ($token->name === 'ul' || $token->name === 'ol') {
+ // we want to tuck this into the previous li
+ $need_close_li = true;
+ $nesting++;
+ if (!$seen_li) {
+ // create a new li element
+ $result[] = new HTMLPurifier_Token_Start('li');
+ } else {
+ // backtrack until </li> found
+ while(true) {
+ $t = array_pop($result);
+ if ($t instanceof HTMLPurifier_Token_End) {
+ // XXX actually, these invariants could very plausibly be violated
+ // if we are doing silly things with modifying the set of allowed elements.
+ // FORTUNATELY, it doesn't make a difference, since the allowed
+ // elements are hard-coded here!
+ if ($t->name !== 'li') {
+ trigger_error("Only li present invariant violated in List ChildDef", E_USER_ERROR);
+ return false;
+ }
+ break;
+ } elseif ($t instanceof HTMLPurifier_Token_Empty) { // bleagh
+ if ($t->name !== 'li') {
+ trigger_error("Only li present invariant violated in List ChildDef", E_USER_ERROR);
+ return false;
+ }
+ // XXX this should have a helper for it...
+ $result[] = new HTMLPurifier_Token_Start('li', $t->attr, $t->line, $t->col, $t->armor);
+ break;
+ } else {
+ if (!$t->is_whitespace) {
+ trigger_error("Only whitespace present invariant violated in List ChildDef", E_USER_ERROR);
+ return false;
+ }
+ }
+ }
+ }
+ } else {
+ // start wrapping (this doesn't precisely mimic
+ // browser behavior, but what browsers do is kind of
+ // hard to mimic in a standards compliant way
+ // XXX Actually, this has no impact in practice,
+ // because this gets handled earlier. Arguably,
+ // we should rip out all of that processing
+ $result[] = new HTMLPurifier_Token_Start('li');
+ $nesting++;
+ $seen_li = true;
+ $need_close_li = true;
+ }
+ }
+ $result[] = $token;
+ }
+ if ($need_close_li) {
+ $result[] = new HTMLPurifier_Token_End('li');
+ }
+ if (empty($result)) return false;
+ if ($all_whitespace) {
+ return false;
+ }
+ if ($tokens_of_children == $result) return true;
+ return $result;
+ }
+}
+
+// vim: et sw=4 sts=4