命令：预设参数

package main

import (
	"context"
	"os"

	"github.com/hedzr/cmdr/v2"
	"github.com/hedzr/cmdr/v2/cli"
	"github.com/hedzr/cmdr/v2/examples/cmd"
	logz "github.com/hedzr/logg/slog"
)

const (
	appName = "demo-app"
	desc    = ``
	version = cmdr.Version
	author  = ``
)

func main() {
	app := cmdr.Create(appName, version, author, desc).
    With(func(app cli.App) {
	  }).
    WithAdders(cmd.Commands...).
    Build()

	ctx := context.Background()
	if err := app.Run(ctx); err != nil {
		logz.ErrorContext(ctx, "Application Error:", "err", err) // stacktrace if in debug mode/build
		os.Exit(app.SuggestRetCode())
	} else if rc := app.SuggestRetCode(); rc != 0 {
		os.Exit(rc)
	}
}

package cmd

import (
	"context"

	"github.com/hedzr/cmdr/v2/cli"
)

type presetCmd struct{}

func (presetCmd) Add(app cli.App) {
	app.Cmd("preset", "p").
		Description("preset command").
		With(func(b cli.CommandBuilder) {
			b.Flg("preset", "p").
				Default(false).
				Description("preset arg").
				Build()
			b.Cmd("cmd", "c").
				PresetCmdLines(`-pv`).
				OnAction(func(ctx context.Context, cmd cli.Cmd, args []string) (err error) {
					_, err = app.DoBuiltinAction(ctx, cli.ActionDefault)
					return
				}).Build()
		})
}