blog/go/commandline/cobra/cobra.go

39 lines
717 B
Go

package main
import (
"fmt"
"github.com/spf13/cobra"
)
func main(){
cmd := cobra.Command{
Use: "cobra",
Short: "this is a cobra demo",
Run: func(cmd *cobra.Command, args []string){
fmt.Println("good! you run a cobra command!")
},
}
var newLine *bool
subCmd := cobra.Command{
Use: "echo",
Short: "echo your input",
Run: func(cmd *cobra.Command, args []string){
for _, arg := range args {
if newLine != nil && *newLine{
fmt.Println(arg)
}else{
fmt.Printf("%s ", arg)
}
}
if newLine == nil || ! *newLine{
fmt.Println()
}
},
}
newLine = subCmd.Flags().BoolP("newline", "n", false, "display one word per line")
cmd.AddCommand(&subCmd)
cmd.Execute()
}