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/* NSC -- new Scala compiler
* Copyright 2005-2013 LAMP/EPFL
* @author Paul Phillips
*/
package scala.tools
package cmd
import nsc.io.File
import Interpolation._
/** Meta-options for command line tools. We could have all kinds
* of additional goodness here, but for now it's completion and script
* generation. See Demo for example usage.
*/
object Meta {
trait Opt {
def name: String
def action: () => Unit
}
trait StdOpts {
self: Spec with Interpolation =>
Bash.name --> runAndExit(Bash.action())
val selfUpdateName = SelfUpdate.name --| ;
if (selfUpdateName.isDefined)
runAndExit(SelfUpdate.action())
/** I think we're as close as we can get to bundling completion with
* the program given the constraints imposed by bash. This outputs
* the completion function to a tempfile and echoes ". /path/to/file"
* to the console. Place it inside backtickes like `partest --bash`
* and voila, you have absorbed command completion.
*/
object Bash extends Opt {
val name = "bash"
val action = () => {
val file = File.makeTemp("scala.cmd.bash")
file writeAll interpolate(bashTemplate)
// Would be nice to print something like this but comments are
// not always comments in bash, and breaking it is worse.
// Console println ("# Run the following line, or issue the --bash command in `backticks`.")
Console println (". " + file.normalize.path)
}
}
/** Generates a very basic runner script. It's called SelfUpdate
* because once it exists you can do something like
*
* tools/scmp --self-update tools/scmp
*
* and it will overwrite itself with the current version.
*/
object SelfUpdate extends Opt {
val name = "self-update"
val action = () => {
val file = File(selfUpdateName.get)
file writeAll interpolate(runnerTemplate)
file setExecutable true
()
}
}
}
}
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