软件简介

cli是一个用go语言写成的用于快速构建go语言命令行程序的工具。

Key features

• Lightweight and easy to use.
• Defines flag by tag, e.g. flag name(short or/and long), description, default value, password, prompt and so on.
• Type safety.
• Output looks very nice.
• Supports custom Validator.
• Supports slice and map as a flag.
• Supports any type as a flag field which implements cli.Decoder interface.
• Supports any type as a flag field which use FlagParser.
• Suggestions for command.(e.g. hl => help, “veron” => “version”).

• Supports default value for flag, even expression about env variable(e.g. dft:”$HOME/dev”).

• 下图是用cli创建的示例程序gogo的帮助显示：

一个hello的例子

package main

import (
    "github.com/mkideal/cli"
)

type argT struct {
    Help bool   `cli:"!h,help" usage:"display help information"`
    Name string `cli:"name" usage:"your name" dft:"world"`
    Age  uint8  `cli:"a,age" usage:"your age" dft:"100"`
}

func main() {
    cli.Run(&argT{}, func(ctx *cli.Context) error {
        argv := ctx.Argv().(*argT)
        if argv.Help {
            ctx.String(ctx.Usage())
        } else {
            ctx.String("Hello, %s! Your age is %d?\n", argv.Name, argv.Age)
        }
        return nil
    })
}

更多有用的例子：

http://www.mkideal.com/golang/cli-examples.html