From 15b42451d124564b9ccf4a6365d2f50f7f3896c9 Mon Sep 17 00:00:00 2001
From: Jakob Odersky <jodersky@gmail.com>
Date: Tue, 21 May 2013 19:30:04 +0200
Subject: extract native libraries

---
 .gitignore                                         |  1 +
 project/Build.scala                                | 18 ++++++-----
 project/JNIBuild.scala                             |  5 ++--
 .../com/github/jodersky/flow/NativeSerial.java     |  2 +-
 .../com/github/jodersky/flow/NativeLoader.scala    | 35 ++++++++++++++++++++++
 5 files changed, 51 insertions(+), 10 deletions(-)
 create mode 100644 src/main/scala/com/github/jodersky/flow/NativeLoader.scala

diff --git a/.gitignore b/.gitignore
index 20e1c2d..2112789 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@ project/boot/
 project/plugins/project/
 
 # Scala-IDE specific
+.settings
 .scala_dependencies
 .project
 .classpath
diff --git a/project/Build.scala b/project/Build.scala
index 714c9d0..9efb049 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -11,7 +11,7 @@ object FlowBuild extends Build {
   lazy val root = Project(
     id = "flow",
     base = file("."),
-    settings = buildSettings ++ jniSettings ++ runSettings)
+    settings = buildSettings ++ jniSettings ++ runSettings ++ Seq(libraryDependencies ++= Dependencies.all))
 
   lazy val buildSettings = Defaults.defaultSettings ++ Seq(
     organization := Organization,
@@ -19,8 +19,8 @@ object FlowBuild extends Build {
     scalaVersion := ScalaVersion,
     resolvers += "Typesafe Repo" at "http://repo.typesafe.com/typesafe/releases/",
     scalacOptions ++= Seq("-deprecation", "-unchecked", "-feature"),
-    compileOrder in Compile := CompileOrder.JavaThenScala)
-   
+    compileOrder in Compile := CompileOrder.Mixed)
+
   lazy val jniSettings = JNIBuild.defaults ++ Seq(
     jdkHome := file(System.getProperty("java.home")) / "..",
     javaClass := "com.github.jodersky.flow.NativeSerial",
@@ -29,9 +29,13 @@ object FlowBuild extends Build {
     NativeBuild.includeDirectories <<= jdkHome apply (jdk => Seq(jdk / "include", jdk / "include" / "linux")),
     linker := "gcc",
     linkerOptions := Seq("-shared", "-Wl,-soname,libflow.so.1"),
-    linkerOutput <<= NativeBuild.outputDirectory(_ / "libflow.so")
+    linkerOutput <<= NativeBuild.outputDirectory(_ / "libflow.so"),
+    mappings in (Compile, packageBin) <+= linkerOutput map { out =>
+      out -> ("native/" + System.getProperty("os.name").toLowerCase + "/" + System.getProperty("os.arch").toLowerCase + "/libflow.so")
+    },
+    Keys.`package` in (Compile, packageBin) <<= (Keys.`package` in (Compile, packageBin)).dependsOn(NativeBuild.link)
   )
-  
+
   lazy val runSettings = Seq(
     fork := true,
     connectInput in run := true,
@@ -41,7 +45,7 @@ object FlowBuild extends Build {
 object Dependencies {
   lazy val all = Seq()
 
-  //lazy val io = "com.github.scala-incubator.io" %% "scala-io-core" % "0.4.2"
-  //lazy val file = "com.github.scala-incubator.io" %% "scala-io-file" % "0.4.2"
+  lazy val io = "com.github.scala-incubator.io" %% "scala-io-core" % "0.4.2"
+  lazy val file = "com.github.scala-incubator.io" %% "scala-io-file" % "0.4.2"
 
 }
diff --git a/project/JNIBuild.scala b/project/JNIBuild.scala
index 95509fb..ed0d05e 100644
--- a/project/JNIBuild.scala
+++ b/project/JNIBuild.scala
@@ -13,9 +13,10 @@ object JNIBuild {
     {}
   } dependsOn (Keys.compile in Compile)
 
-  val defaults = NativeBuild.defaults ++ Seq(
+  val defaults: Seq[Setting[_]] = NativeBuild.defaults ++ Seq(
     javahTask,
-    NativeBuild.compile <<= NativeBuild.compile.dependsOn(javah))
+    NativeBuild.compile <<= NativeBuild.compile.dependsOn(javah)
+    )
 
 }
 
diff --git a/src/main/java/com/github/jodersky/flow/NativeSerial.java b/src/main/java/com/github/jodersky/flow/NativeSerial.java
index 10a82c9..f5d708e 100644
--- a/src/main/java/com/github/jodersky/flow/NativeSerial.java
+++ b/src/main/java/com/github/jodersky/flow/NativeSerial.java
@@ -3,7 +3,7 @@ package com.github.jodersky.flow;
 public class NativeSerial {
 	
 	static {
-		System.loadLibrary("flow");
+		NativeLoader.load();
 	}
 	
 	final static int E_PERMISSION = -1;
diff --git a/src/main/scala/com/github/jodersky/flow/NativeLoader.scala b/src/main/scala/com/github/jodersky/flow/NativeLoader.scala
new file mode 100644
index 0000000..91b3fd8
--- /dev/null
+++ b/src/main/scala/com/github/jodersky/flow/NativeLoader.scala
@@ -0,0 +1,35 @@
+package com.github.jodersky.flow
+
+import java.io.File
+import java.io.FileOutputStream
+
+object NativeLoader {
+
+  def load = {
+    val os = System.getProperty("os.name").toLowerCase
+    val arch = System.getProperty("os.arch").toLowerCase
+
+    val in = NativeLoader.getClass().getResourceAsStream("/native/" + os + "/" + arch + "/" + "libflow.so")
+    val temp = File.createTempFile("flow" + os + arch, ".so");
+    temp.deleteOnExit()
+    val out = new FileOutputStream(temp);
+
+    try {
+      var read: Int = 0; ;
+      val buffer = new Array[Byte](4096);
+      do {
+        read = in.read(buffer)
+        if (read != -1) {
+          out.write(buffer, 0, read);
+        }
+      } while (read != -1)
+    } finally {
+      in.close()
+      out.close
+    }
+
+    System.load(temp.getAbsolutePath())
+
+  }
+
+}
\ No newline at end of file
-- 
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