scopt 2.1.0 お試し

build.sbt

import sbt._
import sbt.Keys._

object EchoBuild extends Build {

  lazy val echo = Project(
    id = "echo",
    base = file("."),
    settings = Project.defaultSettings ++ Seq(
      name := "echo",
      organization := "com.github.tototoshi.echo",
      version := "0.1-SNAPSHOT",
      scalaVersion := "2.9.1",
      libraryDependencies += "com.github.scopt" %% "scopt" % "2.1.0",
      resolvers += "sonatype-public" at "https://oss.sonatype.org/content/groups/public"
    )
  )
}

scopt_example.scala

package com.github.tototoshi.echo


object Echo {

  case class Config(newLine: Boolean, times: Int, string: String)


  def main(args: Array[String]): Unit = {

    val version = "0.1"

    val parser = new scopt.immutable.OptionParser[Config]("echo", version) {

      def options = Seq(
        flag("n", "no-newline", "no newline") { (config: Config) => config.copy(newLine = false) }
        , intOpt("x", "times", "repeat x times") { (times: Int, config: Config) => config.copy(times = times) }
        , argOpt("<string>", "string(s) to output") { (string: String, config: Config) => config.copy(string = string) }
      )

    }

    parser.parse(args, Config(true, 1, "")).map { config =>
      for (i <- 1 to config.times) {
        if (config.newLine) {
          println(config.string)
        } else {
          print(config.string)
        }
      }
    } getOrElse {
      println("Invalid arguments.")
    }

  }


}


/**

> run -x 3 hello
[info] Running com.github.tototoshi.echo.Echo -x 3 hello
hello
hello
hello
[success] Total time: 0 s, completed 2012/06/14 22:53:28
> run hello
[info] Running com.github.tototoshi.echo.Echo hello
hello
[success] Total time: 0 s, completed 2012/06/14 22:53:31
> run -x 3 -n hello
[info] Running com.github.tototoshi.echo.Echo -x 3 -n hello
hellohellohello[success] Total time: 0 s, completed 2012/06/14 22:53:36
> run -x 3 --no-newline hello
[info] Running com.github.tototoshi.echo.Echo -x 3 --no-newline hello
hellohellohello[success] Total time: 0 s, completed 2012/06/14 22:53:44
> run -a
[info] Running com.github.tototoshi.echo.Echo -a
Error: Unknown argument '-a'

echo 0.1
Usage: echo [options] <string>

  -n | --no-newline
        no newline
  -x <value> | --times <value>
        repeat x times
  <string>
        string(s) to output

Invalid arguments.
[success] Total time: 0 s, completed 2012/06/14 22:54:08

*/