// Setenv sets the value of the environment variable named by the key.
// It returns an Error, if any.
func Setenv(key, value string) Error {
var v *uint16
if len(value) > 0 {
v = syscall.StringToUTF16Ptr(value)
}
ok, e := syscall.SetEnvironmentVariable(syscall.StringToUTF16Ptr(key), v)
if !ok {
return NewSyscallError("SetEnvironmentVariable", e)
}
return nil
}
// os.Clearenv() doesn't actually unset variables on Windows
// See: https://github.com/golang/go/issues/17902
func clearenv() {
for _, s := range os.Environ() {
for j := 1; j < len(s); j++ {
if s[j] == '=' {
keyp, _ := syscall.UTF16PtrFromString(s[0:j])
syscall.SetEnvironmentVariable(keyp, nil)
break
}
}
}
}