add EnvBool

Author: jpillora

share/settings/env.go

@@ -3,26 +3,33 @@ package settings
 import (
 	"os"
 	"strconv"
+	"strings"
 	"time"
 )
 
-//Env returns a chisel environment variable
+// Env returns a chisel environment variable
 func Env(name string) string {
 	return os.Getenv("CHISEL_" + name)
 }
 
-//EnvInt returns an integer using an environment variable, with a default fallback
+// EnvInt returns an integer using an environment variable, with a default fallback
 func EnvInt(name string, def int) int {
 	if n, err := strconv.Atoi(Env(name)); err == nil {
 		return n
 	}
 	return def
 }
 
-//EnvDuration returns a duration using an environment variable, with a default fallback
+// EnvDuration returns a duration using an environment variable, with a default fallback
 func EnvDuration(name string, def time.Duration) time.Duration {
 	if n, err := time.ParseDuration(Env(name)); err == nil {
 		return n
 	}
 	return def
 }
+
+// EnvBool returns a boolean using an environment variable
+func EnvBool(name string) bool {
+	v := Env(name)
+	return v == "1" || strings.ToLower(v) == "true"
+}