46 lines
1.0 KiB
Go
46 lines
1.0 KiB
Go
package daecommon
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"sync"
|
|
|
|
"github.com/adrg/xdg"
|
|
)
|
|
|
|
// EnvVars are variables which are derived based on the environment which the
|
|
// process is running in.
|
|
type EnvVars struct {
|
|
RuntimeDirPath string
|
|
StateDirPath string
|
|
}
|
|
|
|
// GetEnvVars will return the EnvVars of the current processes, as determined by
|
|
// the process's environment.
|
|
var GetEnvVars = sync.OnceValue(func() (v EnvVars) {
|
|
// RUNTIME_DIRECTORY/STATE_DIRECTORY are used by the systemd service in
|
|
// conjunction with the RuntimeDirectory/StateDirectory directives.
|
|
|
|
v.RuntimeDirPath = envOr(
|
|
"RUNTIME_DIRECTORY",
|
|
func() string { return filepath.Join(xdg.RuntimeDir, "isle") },
|
|
)
|
|
|
|
v.StateDirPath = envOr(
|
|
"STATE_DIRECTORY",
|
|
func() string { return filepath.Join(xdg.StateHome, "isle") },
|
|
)
|
|
|
|
return
|
|
})
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Jigs
|
|
|
|
func envOr(name string, fallback func() string) string {
|
|
if v := os.Getenv(name); v != "" {
|
|
return v
|
|
}
|
|
return fallback()
|
|
}
|