From 26e3702f3fccdedbb9dd44574678e9217d16959c Mon Sep 17 00:00:00 2001
From: Li Haoyi <haoyi.sg@gmail.com>
Date: Wed, 17 Jan 2018 21:35:48 -0800
Subject: Implement downloading/caching of binaries and java-source-folder
 support to make better-files benchmarks compile; fixes
 https://github.com/lihaoyi/mill/issues/37

---
 core/src/main/scala/mill/modules/Util.scala | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 core/src/main/scala/mill/modules/Util.scala

(limited to 'core')

diff --git a/core/src/main/scala/mill/modules/Util.scala b/core/src/main/scala/mill/modules/Util.scala
new file mode 100644
index 00000000..cd674bad
--- /dev/null
+++ b/core/src/main/scala/mill/modules/Util.scala
@@ -0,0 +1,26 @@
+package mill.modules
+
+import ammonite.ops.RelPath
+import mill.eval.PathRef
+import mill.util.Ctx
+
+object Util {
+  def download(url: String, dest: RelPath)(implicit ctx: Ctx.DestCtx) = {
+    ammonite.ops.mkdir(ctx.dest)
+    val out = ctx.dest / dest
+
+    val website = new java.net.URI(url).toURL
+    val rbc = java.nio.channels.Channels.newChannel(website.openStream)
+    try{
+      val fos = new java.io.FileOutputStream(out.toIO)
+      try{
+        fos.getChannel.transferFrom(rbc, 0, java.lang.Long.MAX_VALUE)
+        PathRef(out)
+      } finally{
+        fos.close()
+      }
+    } finally{
+      rbc.close()
+    }
+  }
+}
-- 
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