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-rw-r--r--vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/RemoveEmpty.php112
1 files changed, 112 insertions, 0 deletions
diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/RemoveEmpty.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/RemoveEmpty.php
new file mode 100644
index 000000000..0ebc477c6
--- /dev/null
+++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/RemoveEmpty.php
@@ -0,0 +1,112 @@
+<?php
+
+class HTMLPurifier_Injector_RemoveEmpty extends HTMLPurifier_Injector
+{
+ /**
+ * @type HTMLPurifier_Context
+ */
+ private $context;
+
+ /**
+ * @type HTMLPurifier_Config
+ */
+ private $config;
+
+ /**
+ * @type HTMLPurifier_AttrValidator
+ */
+ private $attrValidator;
+
+ /**
+ * @type bool
+ */
+ private $removeNbsp;
+
+ /**
+ * @type bool
+ */
+ private $removeNbspExceptions;
+
+ /**
+ * Cached contents of %AutoFormat.RemoveEmpty.Predicate
+ * @type array
+ */
+ private $exclude;
+
+ /**
+ * @param HTMLPurifier_Config $config
+ * @param HTMLPurifier_Context $context
+ * @return void
+ */
+ public function prepare($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->exclude = $config->get('AutoFormat.RemoveEmpty.Predicate');
+ foreach ($this->exclude as $key => $attrs) {
+ if (!is_array($attrs)) {
+ // HACK, see HTMLPurifier/Printer/ConfigForm.php
+ $this->exclude[$key] = explode(';', $attrs);
+ }
+ }
+ $this->attrValidator = new HTMLPurifier_AttrValidator();
+ }
+
+ /**
+ * @param HTMLPurifier_Token $token
+ */
+ public function handleElement(&$token)
+ {
+ if (!$token instanceof HTMLPurifier_Token_Start) {
+ return;
+ }
+ $next = false;
+ $deleted = 1; // the current tag
+ for ($i = count($this->inputZipper->back) - 1; $i >= 0; $i--, $deleted++) {
+ $next = $this->inputZipper->back[$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)) {
+ $this->attrValidator->validateToken($token, $this->config, $this->context);
+ $token->armor['ValidateAttributes'] = true;
+ if (isset($this->exclude[$token->name])) {
+ $r = true;
+ foreach ($this->exclude[$token->name] as $elem) {
+ if (!isset($token->attr[$elem])) $r = false;
+ }
+ if ($r) return;
+ }
+ if (isset($token->attr['id']) || isset($token->attr['name'])) {
+ return;
+ }
+ $token = $deleted + 1;
+ for ($b = 0, $c = count($this->inputZipper->front); $b < $c; $b++) {
+ $prev = $this->inputZipper->front[$b];
+ if ($prev instanceof HTMLPurifier_Token_Text && $prev->is_whitespace) {
+ continue;
+ }
+ break;
+ }
+ // This is safe because we removed the token that triggered this.
+ $this->rewindOffset($b+$deleted);
+ return;
+ }
+ }
+}
+
+// vim: et sw=4 sts=4