quack
An interface driven cli lib for go.
Overview
Have you ever said
Why can't writing CLIs be as easy as defining a struct and writing a function?
Then quack is for you.
A simple command
main.go
type ToHex struct {
Input int
}
func (t ToHex) Run([]args) {
fmt.Printf("%x", t.Input)
}
func main() {
quack.Run("tohex", quack.WithCommand(&ToHex{}))
}Can now be run
go run main.go --input 12334
302e
A simple set of sub commands
examples/deeply_nested/main.go
package main
import "github.com/eliothedeman/quack"
type a struct {
}
func (a) SubCommands() quack.Map {
return quack.Map{
"b": new(b),
}
}
type b struct {
}
func (b) SubCommands() quack.Map {
return quack.Map{
"c": new(c),
}
}
type c struct {
XX string `default:"YYY" short:"x"`
Y int `help:"this is a help message"`
Z bool `default:"true"`
}
func (c) Run([]string) {
}
func (c) Help() string {
return "the nested c command"
}
func main() {
quack.Run("nested", quack.WithGroup(new(a)))
}go run examples/deeply_nested/main.go b -h
Usage: b <cmd> [args]
c the nested c command
go run examples/deeply_nested/main.go b c -h
Usage: c [args]
the nested c command
Flags:
--z (default=true)
Options:
-x, --xx string (default='YYY')
--y int (default=0) this is a help message