CubePdf.Converter.EscapeIf C# (CSharp) Method

        private void EscapeIf(UserSetting setting)
        {
            if (!FileExists(setting)) return;

            var is_merge = setting.ExistedFile == Parameter.ExistedFiles.MergeTail ||
                           setting.ExistedFile == Parameter.ExistedFiles.MergeHead;

            if (setting.ExistedFile == Parameter.ExistedFiles.Rename)
            {
                var directory = IoEx.Path.GetDirectoryName(setting.OutputPath);
                var basename  = IoEx.Path.GetFileNameWithoutExtension(setting.OutputPath);
                var extension = IoEx.Path.GetExtension(setting.OutputPath);

                for (var i = 2; i < 10000; ++i)
                {
                    var old = IoEx.Path.GetFileName(setting.OutputPath);
                    var filename = string.Format("{0}({1}){2}", basename, i, extension);
                    setting.OutputPath = IoEx.Path.Combine(directory, filename);
                    AddMessage(string.Format("Rename: {0} -> {1}", old, filename));
                    if (!FileExists(setting)) break;
                }
            }
            else if (setting.FileType == Parameter.FileTypes.PDF && is_merge)
            {
                _escaped = IoEx.Path.Combine(Path.WorkingDirectory, IoEx.Path.GetRandomFileName());
                IoEx.File.Copy(setting.OutputPath, _escaped, true);
                AddMessage(string.Format("Escape: {0} -> {1}", setting.OutputPath, _escaped));
            }
        }