FileName use template string

[frank-yf]

For FileName, consider using template strings, such as foo-${date}.log.gz, which makes the file suffix reasonable. It's strange to force a TimeTag spliced to the end of FileName. Last, thanks for your components, which helped me a lot~

[frank-yf]

or Printf

[arthurkiller]

Hi, @yuefei7746 Glad to see it really helps, and PR is welcomed. You can add features by contributing to this repo.