What is the format of the config file?

Question

Programming

I need to generate a config file for a third party program. And this should be done on the fly from another program. To do this, I wanted to use a ready-made generator, and not write my own bike.
What is the markup format?
Or what type of config file?

#Comment
type name1
{
key1 = value1
key2 = value2
}
type name2 : nam1
{
key1 = value3
key3 = value4
}

Answer 1

Specify the development language, maybe it will give someone an idea ...
Personally, I meet this for the first time.
Maybe even Lua.