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getenv.go
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/
getenv.go
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package internal
import (
"fmt"
"os"
"strconv"
"strings"
)
func getenvTrim(key string) string {
return strings.TrimSpace(os.Getenv(key))
}
func GetenvInt(key string, def int) (int, error) {
val := getenvTrim(key)
if val == "" {
return def, nil
}
ret, err := strconv.Atoi(val)
if err != nil {
return def, fmt.Errorf("failed to convert value %w", err)
}
return ret, nil
}
func GetenvIntRange(key string, def, min, max int) (int, error) {
ret, err := GetenvInt(key, def)
if err != nil {
return def, fmt.Errorf("failed to convert value %w", err)
}
if ret < min || ret > max {
ret = def
}
return ret, nil
}
func GetenvInt64(key string, def int64) (int64, error) {
val := getenvTrim(key)
if val == "" {
return def, nil
}
ret, err := strconv.ParseInt(val, 0, 32)
if err != nil {
return def, fmt.Errorf("failed to convert value %w", err)
}
return ret, nil
}
func GetenvInt64Range(key string, def, min, max int64) (int64, error) {
ret, err := GetenvInt64(key, def)
if err != nil {
return def, fmt.Errorf("failed to convert value %w", err)
}
if ret < min || ret > max {
ret = def
}
return ret, nil
}
func GetenvStr(key, def string) string {
val := getenvTrim(key)
if val == "" {
return def
}
return val
}
func GetenvBool(key string, def bool) (bool, error) {
val := getenvTrim(key)
if val == "" {
return def, nil
}
ret, err := strconv.ParseBool(val)
if err != nil {
return def, fmt.Errorf("failed to convert value %w", err)
}
return ret, nil
}