mirror of https://github.com/sbt/sbt.git
39 lines
1.1 KiB
Scala
39 lines
1.1 KiB
Scala
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package xsbt
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import java.io.File
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import Task._
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object Sync
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{
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def sources(inputDirectory: Task[File], outputDirectory: Task[File]) =
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{
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import Paths._
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(inputDirectory, outputDirectory) map { (in, out) =>
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FileUtilities.assertDirectories(in, out)
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(in ***) x FileMapper.rebase(in, out)
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}
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}
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}
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class Sync(val sources: Task[Iterable[(File,File)]], val cacheDirectory: File) extends TrackedTaskDefinition[Set[File]]
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{
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val tracking = new BasicTracked(sources.map(Set() ++ _.map(_._1)), FilesInfo.hash, cacheFile("sources"))
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val tracked = Seq(tracking)
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def this(inputDirectory: Task[File], outputDirectory: Task[File], cacheFile: File) = this(Sync.sources(inputDirectory, outputDirectory), cacheFile)
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lazy val task =
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sources bind { srcs =>
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val sourcesTargets = srcs.toSeq
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tracking { (sourceChanges, report, tracking) =>
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Task
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{
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val changed = report.invalid ** sourceChanges.allInputs
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for((source,target) <- sourcesTargets if changed(source))
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{
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FileUtilities.copyFile(source, target)
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tracking.product(source, target)
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}
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Set( sourcesTargets.map(_._2) : _*)
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}
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}
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}
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}
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