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-rw-r--r--vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/Linkify.php64
1 files changed, 64 insertions, 0 deletions
diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/Linkify.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/Linkify.php
new file mode 100644
index 000000000..74f83eaa7
--- /dev/null
+++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/Linkify.php
@@ -0,0 +1,64 @@
+<?php
+
+/**
+ * Injector that converts http, https and ftp text URLs to actual links.
+ */
+class HTMLPurifier_Injector_Linkify extends HTMLPurifier_Injector
+{
+ /**
+ * @type string
+ */
+ public $name = 'Linkify';
+
+ /**
+ * @type array
+ */
+ public $needed = array('a' => array('href'));
+
+ /**
+ * @param HTMLPurifier_Token $token
+ */
+ public function handleText(&$token)
+ {
+ if (!$this->allowsElement('a')) {
+ return;
+ }
+
+ if (strpos($token->data, '://') === false) {
+ // our really quick heuristic failed, abort
+ // this may not work so well if we want to match things like
+ // "google.com", but then again, most people don't
+ return;
+ }
+
+ // there is/are URL(s). Let's split the string.
+ // We use this regex:
+ // https://gist.github.com/gruber/249502
+ // but with @cscott's backtracking fix and also
+ // the Unicode characters un-Unicodified.
+ $bits = preg_split(
+ '/\\b((?:[a-z][\\w\\-]+:(?:\\/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}\\/)(?:[^\\s()<>]|\\((?:[^\\s()<>]|(?:\\([^\\s()<>]+\\)))*\\))+(?:\\((?:[^\\s()<>]|(?:\\([^\\s()<>]+\\)))*\\)|[^\\s`!()\\[\\]{};:\'".,<>?\x{00ab}\x{00bb}\x{201c}\x{201d}\x{2018}\x{2019}]))/iu',
+ $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
+
+
+ $token = array();
+
+ // $i = index
+ // $c = count
+ // $l = is link
+ for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
+ if (!$l) {
+ if ($bits[$i] === '') {
+ continue;
+ }
+ $token[] = new HTMLPurifier_Token_Text($bits[$i]);
+ } else {
+ $token[] = new HTMLPurifier_Token_Start('a', array('href' => $bits[$i]));
+ $token[] = new HTMLPurifier_Token_Text($bits[$i]);
+ $token[] = new HTMLPurifier_Token_End('a');
+ }
+ }
+ }
+}
+
+// vim: et sw=4 sts=4