strip_tags_long: use htmlpurifier to properly reformat html content

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/htmlpurifier/library/HTMLPurifier/Injector/RemoveEmpty.php b/lib/htmlpurifier/library/HTMLPurifier/Injector/RemoveEmpty.php
new file mode 100755
index 000000000..d85ca97d9
--- /dev/null
+++ b/lib/htmlpurifier/library/HTMLPurifier/Injector/RemoveEmpty.php
@@ -0,0 +1,42 @@
+<?php
+
+class HTMLPurifier_Injector_RemoveEmpty extends HTMLPurifier_Injector
+{
+
+    private $context, $config;
+
+    public function prepare($config, $context) {
+        parent::prepare($config, $context);
+        $this->config = $config;
+        $this->context = $context;
+        $this->attrValidator = new HTMLPurifier_AttrValidator();
+    }
+
+    public function handleElement(&$token) {
+        if (!$token instanceof HTMLPurifier_Token_Start) return;
+        $next = false;
+        for ($i = $this->inputIndex + 1, $c = count($this->inputTokens); $i < $c; $i++) {
+            $next = $this->inputTokens[$i];
+            if ($next instanceof HTMLPurifier_Token_Text && $next->is_whitespace) continue;
+            break;
+        }
+        if (!$next || ($next instanceof HTMLPurifier_Token_End && $next->name == $token->name)) {
+            if ($token->name == 'colgroup') return;
+            $this->attrValidator->validateToken($token, $this->config, $this->context);
+            $token->armor['ValidateAttributes'] = true;
+            if (isset($token->attr['id']) || isset($token->attr['name'])) return;
+            $token = $i - $this->inputIndex + 1;
+            for ($b = $this->inputIndex - 1; $b > 0; $b--) {
+                $prev = $this->inputTokens[$b];
+                if ($prev instanceof HTMLPurifier_Token_Text && $prev->is_whitespace) continue;
+                break;
+            }
+            // This is safe because we removed the token that triggered this.
+            $this->rewind($b - 1);
+            return;
+        }
+    }
+
+}
+
+// vim: et sw=4 sts=4