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env.go
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env.go
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// Copyright 2017-2019 Lei Ni (nilei81@gmail.com)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package envutil
import (
"os"
"strings"
)
// GetBoolEnvVarOrDefault returns the boolean value specified in the
// environmential variable identified as name, or it returns the specified
// default value if the environmential variable is not found.
func GetBoolEnvVarOrDefault(name string, defaultValue bool) bool {
v := os.Getenv(name)
if v == "" {
return defaultValue
}
if v == "1" || strings.ToUpper(v) == "TRUE" {
return true
}
return false
}
// GetStringEnvVarOrEmptyString returns a string value found in the specified
// environmential variable or it returns an empty string value.
func GetStringEnvVarOrEmptyString(name string) string {
v := os.Getenv(name)
if len(v) == 0 {
return ""
}
return v
}