GitCommands.GitModule.FindGitSuperprojectPath C# (CSharp) Method

        public string FindGitSuperprojectPath(out string submoduleName, out string submodulePath)
        {
            submoduleName = null;
            submodulePath = null;
            if (!IsValidGitWorkingDir())
                return null;

            string superprojectPath = null;

            string currentPath = Path.GetDirectoryName(_workingDir); // remove last slash
            if (!string.IsNullOrEmpty(currentPath))
            {
                string path = Path.GetDirectoryName(currentPath);
                for (int i = 0; i < 5; i++)
                {
                    if (string.IsNullOrEmpty(path))
                        break;
                    if (File.Exists(Path.Combine(path, ".gitmodules")) &&
                        IsValidGitWorkingDir(path))
                    {
                        superprojectPath = path.EnsureTrailingPathSeparator();
                        break;
                    }
                    // Check upper directory
                    path = Path.GetDirectoryName(path);
                }
            }

            if (File.Exists(_workingDir + ".git") &&
                superprojectPath == null)
            {
                var lines = File.ReadLines(_workingDir + ".git");
                foreach (string line in lines)
                {
                    if (line.StartsWith("gitdir:"))
                    {
                        string gitpath = line.Substring(7).Trim();
                        int pos = gitpath.IndexOf("/.git/modules/");
                        if (pos != -1)
                        {
                            gitpath = gitpath.Substring(0, pos + 1).Replace('/', '\\');
                            gitpath = Path.GetFullPath(Path.Combine(_workingDir, gitpath));
                            if (File.Exists(gitpath + ".gitmodules") && IsValidGitWorkingDir(gitpath))
                                superprojectPath = gitpath;
                        }
                    }
                }
            }

            if (!string.IsNullOrEmpty(superprojectPath))
            {
                submodulePath = currentPath.Substring(superprojectPath.Length).ToPosixPath();
                var configFile = new ConfigFile(superprojectPath + ".gitmodules", true);
                foreach (ConfigSection configSection in configFile.ConfigSections)
                {
                    if (configSection.GetPathValue("path") == submodulePath.ToPosixPath())
                    {
                        submoduleName = configSection.SubSection;
                        return superprojectPath;
                    }
                }
            }

            return null;
        }