func main() {
var err error
cfg := onion.New()
// Get command line flags
fs := flag.NewFlagSet(os.Args[0], flag.ExitOnError)
c_cmd := flagslayer.NewFlagLayer(fs)
c_cmd.SetString("home", "home", "none", "Set home directory")
c_cmd.SetBool("enable", "enable", false, "Enable demo")
c_cmd.SetBool("verbose", "v", false, "More verbose output")
c_cmd.SetInt64("int", "i", 0, "Integer")
err = cfg.AddLayer(c_cmd)
check(err)
// Load YAML config
c_yaml := onion.NewFileLayer("config.yaml")
err = cfg.AddLayer(c_yaml)
check(err)
// Load TOML config
c_toml := onion.NewFileLayer("config.toml")
err = cfg.AddLayer(c_toml)
check(err)
// Get ENV variables
c_env := onion.NewEnvLayer("HOME", "USER")
err = cfg.AddLayer(c_env)
check(err)
// Print results
fmt.Println(strings.Repeat("=", 80))
fmt.Println(cfg.GetBool("enable"))
fmt.Println(cfg.GetInt("first"))
fmt.Println(cfg.GetInt("second"))
fmt.Println(cfg.GetStringSlice("list"))
fmt.Println(cfg.GetInt("section.first"))
fmt.Println(cfg.GetInt("section.second"))
// Case insensitive
fmt.Println(cfg.GetString("home"))
fmt.Println(cfg.GetString("Home"))
fmt.Println(cfg.GetString("HOME"))
fmt.Println(cfg.GetString("user"))
fmt.Println(strings.Repeat("-", 80))
}
func main() {
conf := onion.New()
def := onion.NewDefaultLayer()
err := def.SetDefault("port", 6998)
panicOnErr(err)
err = conf.AddLayer(def)
panicOnErr(err)
log.Printf("the port is %d (default layer)", conf.GetInt("port"))
err = conf.AddLayer(onion.NewFileLayer(filepath.Join(pwd(), "test.json")))
panicOnErr(err)
log.Printf("the port is %d (file layer)", conf.GetInt("port"))
err = conf.AddLayer(onion.NewEnvLayer("PORT"))
panicOnErr(err)
log.Printf("the final port is %d, Try to set PORT in env and try again", conf.GetInt("port"))
}