Go Get Path To Current File

I recently needed to get the current file absolute path from a go file. You first need to get the runtime package which is a part of Go

import "runtime"

Next you can use the Caller method and capture the filename. We need to give this function a 1 to tell it to skip up a caller. You can read more about the function here

_, filename, _, ok := runtime.Caller(1)

The filename will be the path up to the current directory of the file that calls this function. The ok is to check if the function call was able to find the information requested.

So in practice if you wanted to get a config file up a directory and in a config directory you could do the following

filepath := path.Join(path.Dir(filename), "../config/settings.toml")