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-rw-r--r--library/HTMLPurifier/Injector/RemoveEmpty.php51
1 files changed, 51 insertions, 0 deletions
diff --git a/library/HTMLPurifier/Injector/RemoveEmpty.php b/library/HTMLPurifier/Injector/RemoveEmpty.php
new file mode 100644
index 000000000..638bfca03
--- /dev/null
+++ b/library/HTMLPurifier/Injector/RemoveEmpty.php
@@ -0,0 +1,51 @@
+<?php
+
+class HTMLPurifier_Injector_RemoveEmpty extends HTMLPurifier_Injector
+{
+
+ private $context, $config, $attrValidator, $removeNbsp, $removeNbspExceptions;
+
+ public function prepare($config, $context) {
+ parent::prepare($config, $context);
+ $this->config = $config;
+ $this->context = $context;
+ $this->removeNbsp = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp');
+ $this->removeNbspExceptions = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions');
+ $this->attrValidator = new HTMLPurifier_AttrValidator();
+ }
+
+ public function handleElement(&$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 ($next instanceof HTMLPurifier_Token_Text) {
+ if ($next->is_whitespace) continue;
+ if ($this->removeNbsp && !isset($this->removeNbspExceptions[$token->name])) {
+ $plain = str_replace("\xC2\xA0", "", $next->data);
+ $isWsOrNbsp = $plain === '' || ctype_space($plain);
+ if ($isWsOrNbsp) continue;
+ }
+ }
+ break;
+ }
+ if (!$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