(js) Review Mail module to decrease watchers

UI/WebServerResources/js/Common/utils.js

@@ -9,6 +9,27 @@ String.prototype.startsWith = function(pattern, position) {
   return this.lastIndexOf(pattern, position) === position;
 };
 
+// See ngSanitize
+String.prototype.encodeEntities = function () {
+  // Regular Expressions for parsing tags and attributes
+  var SURROGATE_PAIR_REGEXP = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g,
+      // Match everything outside of normal chars and " (quote character)
+      NON_ALPHANUMERIC_REGEXP = /([^#-~ |!])/g;
+
+  return this.
+    replace(/&/g, '&').
+    replace(SURROGATE_PAIR_REGEXP, function(value) {
+      var hi = value.charCodeAt(0);
+      var low = value.charCodeAt(1);
+      return '&#' + (((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000) + ';';
+    }).
+    replace(NON_ALPHANUMERIC_REGEXP, function(value) {
+      return '&#' + value.charCodeAt(0) + ';';
+    }).
+    replace(/</g, '&lt;').
+    replace(/>/g, '&gt;');
+};
+
 String.prototype._base64_keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
 String.prototype.base64encode = function () {
   var output = "";