1 files changed, 68 insertions, 0 deletions
diff --git a/plugin/src/main/scala/ch/jodersky/sbt/jni/build/BuildTool.scala b/plugin/src/main/scala/ch/jodersky/sbt/jni/build/BuildTool.scala
new file mode 100644
index 0000000..3d0deb1
--- /dev/null
+++ b/plugin/src/main/scala/ch/jodersky/sbt/jni/build/BuildTool.scala
@@ -0,0 +1,68 @@
+package ch.jodersky.sbt.jni
+package build
+
+import java.io.{ File, InputStream }
+import java.nio.file.Files
+
+import scala.io.Source
+import sbt.Logger
+
+trait BuildTool {
+
+  /** Name of this build tool. */
+  def name: String
+
+  /** Detect if this build tool is configured in the given directory.
+    * E.g. for the Make build tool, this would return true if a Makefile is present
+    * in the given directory.
+    */
+  def detect(baseDirectory: File): Boolean
+
+  protected def templateMappings: Seq[(String, String)]
+
+  /** Initialize the given directory with a minimal, functioning configuration for
+    * this build tool. E.g. for the Make build tool, this would create a Makefile in
+    * the given directory that is compatible with sbt-jni.
+    * @return all created files
+    */
+  def initTemplate(baseDirectory: File, projectName: String): Seq[File] =
+    for ((resource, name) <- templateMappings) yield {
+      val resourceStream = this.getClass.getResourceAsStream(resource)
+
+      if (resourceStream == null) sys.error(s"Template for $name not found.")
+
+      val raw = Source.fromInputStream(resourceStream).mkString("")
+      val replaced = raw.replaceAll("\\{\\{project\\}\\}", projectName)
+
+      baseDirectory.mkdir()
+      val out = baseDirectory.toPath().resolve(name)
+      Files.write(out, replaced.getBytes)
+      out.toFile()
+    }
+
+  /** Actual tasks that can be perfomed on a specific configuration, such as
+    * configured in a Makefile.
+    */
+  trait Instance {
+
+    /** Invokes the native build tool's clean task */
+    def clean(): Unit
+
+    /** Invokes the native build tool's main task, resulting in a single shared
+      * library file.
+      * @param baseDirectory the directory where the native project is located
+      * @param buildDirectory a directory from where the build is called, it may be used
+      * to store temporary files
+      * @param targetDirectory the directory into which the native library is copied
+      * @return the native library file
+      */
+    def library(
+      targetDirectory: File
+    ): File
+
+  }
+
+  /** Get an instance (build configuration) of this tool, in the specified directory. */
+  def getInstance(baseDirectory: File, buildDirectory: File, logger: Logger): Instance
+
+}