How to validate arguments and pass them to an action in a Command

[Michael Schmitz]

Hi, the sbt MEAP shows how to use SBT commands that run a chain of tasks.  What if my command takes command line arguments, which I want to validate early and pass on to a subtask?

For example, I might have a deploy command that takes an argument specifying a destination server.  First I want to validate the arguments, then I want to make sure the git repository is clean, then I want to compile and stage the application, and finally I want to deploy the application--using the arguments that were passed into the command.

Would I create a task to validate the arguments, and then create a task string later on with args.mkString(" ")?  I.e. my task chain would be:

("validate " + args.mkString(" ")) :: ensureGitClean :: clean :: stage :: ("deploy " + args.mkString(" "))

Or is there a better way?

Peace.  Michael

 

[Michael Schmitz]

http://stackoverflow.com/questions/23282195/how-to-validate-arguments-and-pass-them-to-an-action-in-an-sbt-command