1 files changed, 32 insertions, 0 deletions
diff --git a/dom/xslt/xslt/txEXSLTRegExFunctions.sys.mjs b/dom/xslt/xslt/txEXSLTRegExFunctions.sys.mjs
new file mode 100644
index 0000000000..d13ea6bea5
--- /dev/null
+++ b/dom/xslt/xslt/txEXSLTRegExFunctions.sys.mjs
@@ -0,0 +1,32 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+export function match(str, regex, flags, doc) {
+  var docFrag = doc.createDocumentFragment();
+  var re = new RegExp(regex, flags);
+  var matches = str.match(re);
+  if (matches != null) {
+    for (var i = 0; i < matches.length; ++i) {
+      var match = matches[i];
+      var elem = doc.createElementNS(null, "match");
+      var text = doc.createTextNode(match ? match : "");
+      elem.appendChild(text);
+      docFrag.appendChild(elem);
+    }
+  }
+  return docFrag;
+}
+
+export function replace(str, regex, flags, replace) {
+  var re = new RegExp(regex, flags);
+
+  return str.replace(re, replace);
+}
+
+export function test(str, regex, flags) {
+  var re = new RegExp(regex, flags);
+
+  return re.test(str);
+}