demo http server written by golang with mkideal/cli

demo-httpd.go

package main

import (
	"fmt"
	"net/http"

	"github.com/mkideal/cli"
)

type argT struct {
	cli.Helper
	Host string `cli:"H,host" usage:"specify host" dft:"0.0.0.0"`
	Port uint16 `cli:"p,port" usage:"specify port" dft:"8080"`
	Dir  string `cli:"d,dir" usage:"static files directory" dft:"./"`
}

func main() {
	cli.SetUsageStyle(cli.ManualStyle)
	cli.Run(new(argT), func(ctx *cli.Context) error {
		argv := ctx.Argv().(*argT)
		if argv.Help {
			ctx.WriteUsage()
			return nil
		}
		http.Handle("/", http.FileServer(http.Dir(argv.Dir)))
		addr := fmt.Sprintf("%s:%d", argv.Host, argv.Port)
		ctx.String("listening on %s\n", addr)
		http.ListenAndServe(addr, nil)
		return nil
	})
}