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env.go
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env.go
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package env
import (
"fmt"
"os"
"path/filepath"
"strings"
"syscall"
)
var (
appName = createApp()
envAppName = strings.ToUpper(appName)
processName = "unknown"
)
func createApp() string {
if app, has := os.LookupEnv("APP"); has {
return app
}
app := filepath.Base(os.Args[0])
if err := os.Setenv("APP", app); err != nil {
panic(err)
}
tryReadEnv(app)
return app
}
func GetEnv(name string) (string, bool) {
return syscall.Getenv(envName(name))
}
func GetDefault(name string, d string) string {
if v, has := GetEnv(name); has {
return v
}
return d
}
func SetEnv(name string, value string) {
os.Setenv(envName(name), value)
}
func GenEnv(name, value string) string {
return fmt.Sprintf("%s=%s", envName(name), value)
}
func envName(name string) string {
return createEnvName(envAppName, name)
}
func createEnvName(envName, name string) string {
return fmt.Sprintf("%s_%s", envName, name)
}
func AppName() string {
return appName
}
func Process() string {
return processName
}
func SetProcessName(s string) {
processName = s
}