SenseNet.ContentRepository.ContentNamingHelper.ParseSuffix C# (CSharp) Method

        public static int ParseSuffix(string name, out string nameBase, out bool inValidNumber)
        {
            nameBase = name;
            inValidNumber = false;
            if (!name.EndsWith(")"))
                return 0;
            var p = name.LastIndexOf("(");
            if (p < 0)
                return 0;
            nameBase = name.Substring(0, p);
            var n = name.Substring(p + 1, name.Length - p - 2);
            int result;
            if (Int32.TryParse(n, out result))
                return result;
            inValidNumber = true;
            nameBase = name;
            return 0;
        }

        public static string IncrementNameSuffixToLastName(string currentName, int parentNodeId)
        {
            currentName = RepositoryPath.GetFileName(currentName);
            var    ext = Path.GetExtension(currentName);
            string nameBase;
            bool   inValidNumber;
            var    fileName = Path.GetFileNameWithoutExtension(currentName);

            ContentNamingHelper.ParseSuffix(fileName, out nameBase, out inValidNumber);
            var lastName = DataProvider.Current.GetNameOfLastNodeWithNameBase(parentNodeId, nameBase, ext);

            // if there is no suffixed name in db, return with first variant
            if (lastName == null)
            {
                return(String.Format("{0}(1){1}", nameBase, ext));
            }

            // there was a suffixed name in db in the form namebase(x), increment it
            // car(5)-> car(6), car(test)(5) -> car(test)(6), car(test) -> car(guid)
            string newNameBase;
            var    newName = ContentNamingHelper.IncrementNameSuffix(lastName, out newNameBase);

            // incremented name base differs from original name base (for example 'car(hello)(2)' and 'car(5)')
            // edge case, use guid with original namebase
            if (newNameBase != nameBase)
            {
                return(String.Format("{0}({1}){2}", nameBase, Guid.NewGuid().ToString(), ext));
            }

            // incremented name base and original name base are equal, so incremented name is correct (eg 'car(2)')
            return(newName);
        }