这是一个最最基本的用法：
package main
import (
"fmt"
"os"
"github.com/spf13/cobra"
)
const ProgramName = "testcmd"
var (
address string
tlsEnabled bool
)
func Cmd(programName string) *cobra.Command {
var cmd = &cobra.Command{
Use: programName,
Short: fmt.Sprintf("Sample %s program", programName),
Long: fmt.Sprintf("Long name of sample %s program", programName),
RunE: func(cmd *cobra.Command, args []string) error {
fmt.Printf("Welcome to %s world with address=[%s], tls=[%t]\n", programName, address, tlsEnabled)
if len(args) > 0 {
return fmt.Errorf("unexpected args are met: %v", args)
}
return nil
},
}
cmd.Flags().StringVarP(&address, "address", "d", "", "Target address")
cmd.Flags().BoolVarP(&tlsEnabled, "tls", "", false, "Whethere TLS is enabled")
return cmd
}
func main() {
cmd := Cmd(ProgramName)
if cmd.Execute() != nil {
os.Exit(1)
}
}
对比golang原始的flag模块，这个格式处理的更加简洁。
