我可以从代码访问我的 Scala 应用程序的名称和版本(如在 SBT 中设置的)吗?

问题描述

我正在使用 SBT (0.11.0) 使用 Scala 构建定义构建一个应用程序，如下所示:

I am building an app with SBT (0.11.0) using a Scala build definition like so:

object MyAppBuild extends Build {

  import Dependencies._

  lazy val basicSettings = Seq[Setting[_]](
    organization  := "com.my",
    version       := "0.1",
    description   := "Blah",
    scalaVersion  := "2.9.1",
    scalacOptions := Seq("-deprecation", "-encoding", "utf8"),
    resolvers     ++= Dependencies.resolutionRepos
  )

  lazy val myAppProject = Project("my-app-name", file("."))
    .settings(basicSettings: _*)
    [...]

我在流程结束时打包了一个 .jar.

I'm packaging a .jar at the end of the process.

我的问题很简单:有没有办法从我的 Scala 代码中以编程方式访问应用程序的名称(my-app-name")和版本(0.1")?如果可以的话，我不想在两处重复.

My question is a simple one: is there a way of accessing the application's name ("my-app-name") and version ("0.1") programmatically from my Scala code? I don't want to repeat them in two places if I can help it.

非常感谢任何指导！

推荐答案

sbt-buildinfo

我刚刚写了 sbt-buildinfo.安装插件后:

lazy val root = (project in file(".")).
  enablePlugins(BuildInfoPlugin).
  settings(
    buildInfoKeys := Seq[BuildInfoKey](name, version, scalaVersion, sbtVersion),
    buildInfoPackage := "foo"
  )

以上代码段已更新以反映 sbt-buildinfo 的更新版本.

The above snippet has been updated to reflect more recent version of sbt-buildinfo.

它通过自定义 buildInfoKeys 生成具有您想要的任何设置的 foo.BuildInfo 对象.

It generates foo.BuildInfo object with any setting you want by customizing buildInfoKeys.

(我写的)但这里有一个快速生成文件的脚本:

(I wrote it) but here's a quick script to generate a file:

sourceGenerators in Compile <+= (sourceManaged in Compile, version, name) map { (d, v, n) =>
  val file = d / "info.scala"
  IO.write(file, """package foo
    |object Info {
    |  val version = "%s"
    |  val name = "%s"
    |}
    |""".stripMargin.format(v, n))
  Seq(file)
}

您可以将您的版本设为 foo.Info.version.

You can get your version as foo.Info.version.

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