Implement alternative resolvers

This commit also
- requires Dependencies to explicitly implement canBeCached
- unifies some logic for dependency downloading
- moves SBT-like dependency DSL into its own trait
- error message showing build directory for exceptions in builds
Not splitting this up in favor of faster progress to 1.0.

The user facing API can probably be slightly improved using implicits
inside of BasicBuild, but we can do that later.

1 files changed, 22 insertions, 0 deletions

diff --git a/stage1/MavenRepository.scala b/stage1/MavenRepository.scala
new file mode 100644
index 0000000..bfd52a7
--- /dev/null
+++ b/stage1/MavenRepository.scala
@@ -0,0 +1,22 @@
+package cbt
+import scala.collection.immutable.Seq
+import java.net._
+case class MavenRepository(url: URL){
+    def resolve( dependencies: MavenDependency* )(implicit logger: Logger): BoundMavenDependencies
+      = new BoundMavenDependencies( Seq(url), dependencies.to )
+    def resolveOne( dependency: MavenDependency )(implicit logger: Logger): BoundMavenDependency
+      = BoundMavenDependency( dependency, Seq(url) )
+}
+
+object MavenRepository{
+  case class combine(repositories: MavenRepository*){
+    def resolve( dependencies: MavenDependency* )(implicit logger: Logger): BoundMavenDependencies
+      = new BoundMavenDependencies( repositories.map(_.url).to, dependencies.to )
+  }
+  def central = MavenRepository(new URL(NailgunLauncher.MAVEN_URL))
+  def jcenter = MavenRepository(new URL("https://jcenter.bintray.com/releases"))
+  def bintray(owner: String) = MavenRepository(new URL(s"https://dl.bintray.com/$owner/maven"))
+  private val sonatypeBase  = new URL("https://oss.sonatype.org/content/repositories/")
+  def sonatype          = MavenRepository(sonatypeBase ++ "releases")
+  def sonatypeSnapshots = MavenRepository(sonatypeBase ++ "snapshots")
+}