Clikt Kotlin 命令行接口 项目简介
Clikt 是一个 Kotlin 库,Kotlin 的命令行接口,能够使编写命令行接口变得简洁直观,同时支持各种各样的用例,并允许在需要时进行高级定制。Clikt 的特点:可以任意嵌套命令 可组合,类型安全的参数值 支持多种命令行接口风格 示例代码:class Hello : CliktCommand() {
val count: Int by option(help="Number of greetings").int().default(1)
val name: String by option(help="The person to greet").prompt("Your name")
override fun run() {
for (i in 1..count) {
echo("Hello $name!")
}
}
}
fun main(args: Array<String>) = Hello().main(args)运行结果:$ ./hello --count=3
Your name: John
Hello John!
Hello John!
Hello John!自动生成帮助参数:$ ./hello --help
Usage: hello [OPTIONS]
Options:
--count INT Number of greetings
--name TEXT The person to greet
-h, --help Show this message and exit错误处理:$ ./hello --whoops
Usage: hello [OPTIONS]
Error: no such option: "--whoops".
val count: Int by option(help="Number of greetings").int().default(1)
val name: String by option(help="The person to greet").prompt("Your name")
override fun run() {
for (i in 1..count) {
echo("Hello $name!")
}
}
}
fun main(args: Array<String>) = Hello().main(args)运行结果:$ ./hello --count=3
Your name: John
Hello John!
Hello John!
Hello John!自动生成帮助参数:$ ./hello --help
Usage: hello [OPTIONS]
Options:
--count INT Number of greetings
--name TEXT The person to greet
-h, --help Show this message and exit错误处理:$ ./hello --whoops
Usage: hello [OPTIONS]
Error: no such option: "--whoops".