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// Package self
// a program that complete itself
package main
import (
"flag"
"fmt"
"os"
"github.com/posener/complete"
)
func main() {
// add a variable to the program
var name string
flag.StringVar(&name, "name", "", "Give your name")
// create the complete command
cmp := complete.New(
"self",
complete.Command{Flags: complete.Flags{"-name": complete.PredictAnything}},
)
// AddFlags adds the completion flags to the program flags,
// in case of using non-default flag set, it is possible to pass
// it as an argument.
// it is possible to set custom flags name
// so when one will type 'self -h', he will see '-complete' to install the
// completion and -uncomplete to uninstall it.
cmp.CLI.InstallName = "complete"
cmp.CLI.UninstallName = "uncomplete"
cmp.AddFlags(nil)
// parse the flags - both the program's flags and the completion flags
flag.Parse()
// run the completion, in case that the completion was invoked
// and ran as a completion script or handled a flag that passed
// as argument, the Run method will return true,
// in that case, our program have nothing to do and should return.
if cmp.Complete() {
return
}
// if the completion did not do anything, we can run our program logic here.
if name == "" {
fmt.Println("Your name is missing")
os.Exit(1)
}
fmt.Println("Hi,", name)
}
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