每天20分钟之cobra的例子

package main

import (
	"log"

	"gcobra/cmd"
)

func main() {
	err := cmd.Execute()
	if err != nil {
		log.Fatalf("cmd.Execute err: %v", err)
	}
}

package cmd

import (
	"github.com/spf13/cobra"
)

var rootCmd = &cobra.Command{
	Use:   "",
	Short: "",
	Long:  "",
}

func Execute() error {
	return rootCmd.Execute()
}

func init() {
	rootCmd.AddCommand(timeCmd)
}

package cmd

import (
	"log"
	"time"

	"github.com/spf13/cobra"
)

var timeCmd = &cobra.Command{
	Use:   "time",
	Short: "时间格式处理",
	Long:  "时间格式处理",
	Run:   func(cmd *cobra.Command, args []string) {},
}

var nowTimeCmd = &cobra.Command{
	Use:   "now",
	Short: "获取当前时间",
	Long:  "获取当前时间",
	Run: func(cmd *cobra.Command, args []string) {
		nowTime := time.Now()
		log.Printf("输出结果: %s, %d", nowTime.Format("2006-01-02 15:04:05"), nowTime.Unix())
	},
}

var duration int64

var calculateTimeCmd = &cobra.Command{
	Use:   "calc",
	Short: "计算所需时间",
	Long:  "计算所需时间",
	Run: func(cmd *cobra.Command, args []string) {
		nowTime := time.Now()
		log.Printf("输出结果: %s, %d", nowTime.Format("2006-01-02 15:04:05"), nowTime.Local().UnixMilli()-1000*duration)
	},
}

func init() {
	timeCmd.AddCommand(nowTimeCmd)
	timeCmd.AddCommand(calculateTimeCmd)
	calculateTimeCmd.Flags().Int64VarP(&duration, "duration", "d", 0, `时间间隔`)
}