message-pusher/common/init.go
2023-04-17 21:25:58 +08:00

65 lines
1.5 KiB
Go

package common
import (
"flag"
"fmt"
"log"
"os"
"path/filepath"
"strings"
)
var (
PrintVersion = flag.Bool("version", false, "Print the version of the program and exits.")
PrintHelp = flag.Bool("help", false, "Print the help message and exits.")
Port = flag.Int("port", 3000, "Specify the listening port. Default is 3000.")
LogDir = flag.String("log-dir", "", "Specify the directory for log files.")
)
func printHelp() {
fmt.Println(fmt.Sprintf("Message Pusher %s - Your all in one message push system.", Version))
fmt.Println("Copyright (C) 2023 JustSong. All rights reserved.")
fmt.Println("GitHub: https://github.com/songquanpeng/message-pusher")
fmt.Println("Usage: message-pusher [options]")
fmt.Println("Options:")
flag.CommandLine.VisitAll(func(f *flag.Flag) {
name := fmt.Sprintf("-%s", f.Name)
usage := strings.Replace(f.Usage, "\n", "\n ", -1)
fmt.Printf(" -%-14s%s\n", name, usage)
})
os.Exit(0)
}
func init() {
flag.Parse()
if *PrintVersion {
fmt.Println(Version)
os.Exit(0)
}
if *PrintHelp {
printHelp()
}
if os.Getenv("SESSION_SECRET") != "" {
SessionSecret = os.Getenv("SESSION_SECRET")
}
if os.Getenv("SQLITE_PATH") != "" {
SQLitePath = os.Getenv("SQLITE_PATH")
}
if *LogDir != "" {
var err error
*LogDir, err = filepath.Abs(*LogDir)
if err != nil {
log.Fatal(err)
}
if _, err := os.Stat(*LogDir); os.IsNotExist(err) {
err = os.Mkdir(*LogDir, 0777)
if err != nil {
log.Fatal(err)
}
}
}
}