package common

import (
	"os"
	"path/filepath"
)

var rootDirFunc = RuntimeBaseDir

func RuntimeBaseDir() string {
	exe, err := os.Executable()
	if err == nil {
		return filepath.Dir(exe)
	}
	return "."
}

func RootDir() string { return rootDirFunc() }

func SetRootDirForTest(fn func() string) func() {
	prev := rootDirFunc
	rootDirFunc = fn
	return func() {
		rootDirFunc = prev
	}
}