traefik/vendor/gopkg.in/mattes/go-expand-tilde.v1/tilde.go

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package tilde
import (
"errors"
"os"
"path/filepath"
"runtime"
"strings"
)
var (
ErrNoHome = errors.New("no home found")
)
func Expand(path string) (string, error) {
if !strings.HasPrefix(path, "~") {
return path, nil
}
home, err := Home()
if err != nil {
return "", err
}
return home + path[1:], nil
}
func Home() (string, error) {
home := ""
switch runtime.GOOS {
case "windows":
home = filepath.Join(os.Getenv("HomeDrive"), os.Getenv("HomePath"))
if home == "" {
home = os.Getenv("UserProfile")
}
default:
home = os.Getenv("HOME")
}
if home == "" {
return "", ErrNoHome
}
return home, nil
}