Configure publishing of the sbt plugin and tools library

README.md

@@ -6,6 +6,16 @@ This tool generates Scala Native bindings from C headers. It's built upon clang
 
 [Documentation](https://kornilova-l.github.io/scala-native-bindgen/)
 
+## Releasing
+
+To release version `x.y.z` run:
+
+    > sbt -Dproject.version=x.y.z release
+
+Then build the `scala-native-bindgen` executable for both macOS and
+Linux and upload them to the GitHub release page with the suffix
+`-darwin` and `-linux`, respectively.
+
 ## License
 
 This project is distributed under the Scala license.

build.sbt

@@ -12,8 +12,10 @@ val Versions = new {
 
 inThisBuild(
   Def.settings(
-    organization := "org.scalanative.bindgen",
-    version := "0.2-SNAPSHOT",
+    organization := "org.scala-native.bindgen",
+    licenses := Seq(
+      "BSD 3-Clause" -> url("https://www.scala-lang.org/license/")),
+    homepage := Some(url("https://kornilova-l.github.io/scala-native-bindgen")),
     scalacOptions ++= Seq(
       "-deprecation",
       "-unchecked",
@@ -24,7 +26,20 @@ inThisBuild(
     scmInfo := Some(
       ScmInfo(url("https://github.com/kornilova-l/scala-native-bindgen"),
               "scm:git:[email protected]:kornilova-l/scala-native-bindgen.git")),
-    git.remoteRepo := scmInfo.value.get.connection.replace("scm:git:", "")
+    developers := List(
+      Developer(
+        id = "kornilova-l",
+        name = "Liudmila Kornilova",
+        email = "[email protected]",
+        url = url("https://github.com/kornilova-l")
+      ),
+      Developer(
+        id = "jonas",
+        name = "Jonas Fonseca",
+        email = "[email protected]",
+        url = url("https://github.com/jonas")
+      )
+    )
   ))
 
 val root = project("scala-native-bindgen")
@@ -36,12 +51,33 @@ val root = project("scala-native-bindgen")
     sbtPlugin,
     docs
   )
+  .enablePlugins(ReleasePlugin)
+  .settings(
+    publish / skip := true,
+    releaseCrossBuild := false,
+    releaseVersionFile := target.value / "unused-version.sbt",
+    releaseProcess := {
+      import ReleaseTransformations._
+      Seq[ReleaseStep](
+        checkSnapshotDependencies,
+        setReleaseVersions(version.value),
+        runClean,
+        releaseStepCommandAndRemaining("verify"),
+        setReleaseVersion,
+        tagRelease,
+        releaseStepCommandAndRemaining("^publish"),
+        pushChanges,
+        releaseStepTask(docs / ghpagesPushSite)
+      )
+    }
+  )
 
 lazy val tests = project("tests")
   .dependsOn(tools)
   .settings(
-    fork in Test := true,
-    javaOptions in Test += {
+    publish / skip := true,
+    Test / fork := true,
+    Test / javaOptions += {
       val rootDir = (ThisBuild / baseDirectory).value
       s"-Dbindgen.path=$rootDir/bindgen/target/scala-native-bindgen"
     },
@@ -57,6 +93,7 @@ lazy val samples = project("samples")
   .in(file("tests/samples"))
   .enablePlugins(ScalaNativePlugin)
   .settings(
+    publish / skip := true,
     scalaVersion := Versions.scala211,
     libraryDependencies += "com.lihaoyi" %%% "utest" % "0.6.3" % "test",
     testFrameworks += new TestFramework("utest.runner.Framework"),
@@ -108,20 +145,30 @@ lazy val tools = project("tools")
 
 lazy val sbtPlugin = project("sbt-scala-native-bindgen", ScriptedPlugin)
   .dependsOn(tools)
+  .enablePlugins(BuildInfoPlugin)
   .settings(
     Keys.sbtPlugin := true,
     scriptedLaunchOpts += s"-Dplugin.version=${version.value}",
     scriptedLaunchOpts += {
       val rootDir = (ThisBuild / baseDirectory).value
       s"-Dbindgen.path=$rootDir/bindgen/target/scala-native-bindgen"
     },
+    buildInfoPackage := "org.scalanative.bindgen.sbt",
+    buildInfoKeys := Seq[BuildInfoKey](
+      version,
+      organization,
+      BuildInfoKey.map(scmInfo) {
+        case (k, v) => "projectUrl" -> v.get.browseUrl
+      }
+    ),
     publishLocal := publishLocal.dependsOn(tools / publishLocal).value
   )
 
 lazy val docs = project("docs")
   .enablePlugins(GhpagesPlugin, ParadoxSitePlugin, ParadoxMaterialThemePlugin)
   .settings(
-    paradoxProperties in Paradox ++= Map(
+    publish / skip := true,
+    Paradox / paradoxProperties ++= Map(
       "github.base_url" -> scmInfo.value.get.browseUrl.toString
     ),
     ParadoxMaterialThemePlugin.paradoxMaterialThemeSettings(Paradox),
@@ -134,15 +181,31 @@ lazy val docs = project("docs")
 
 def project(name: String, plugged: AutoPlugin*) = {
   val unplugged = Seq(ScriptedPlugin).filterNot(plugged.toSet)
+
   Project(id = name, base = file(name))
     .disablePlugins(unplugged: _*)
+    .enablePlugins(GitPlugin)
+    .enablePlugins(GitVersioning)
     .settings(
+      versionWithGit,
+      git.useGitDescribe := true,
+      git.remoteRepo := scmInfo.value.get.connection.replace("scm:git:", ""),
       crossSbtVersions := List(Versions.sbt013, Versions.sbt1),
       scalaVersion := {
         (pluginCrossBuild / sbtBinaryVersion).value match {
           case "0.13" => Versions.scala210
           case _      => Versions.scala212
         }
-      }
+      },
+      bintrayOrganization := Some("scala-native-bindgen"),
+      bintrayRepository := {
+        if (Keys.sbtPlugin.value) "sbt-plugins"
+        else "maven"
+      },
+      publishMavenStyle := Keys.sbtPlugin.value == false,
+      Test / publishArtifact := false
     )
 }
+
+lazy val setReleaseVersions: String => State => State =
+  v => _.put(ReleaseKeys.versions, (v, v))

docs/src/paradox/obtaining-bindgen/index.md

@@ -2,6 +2,7 @@
 
 @@@ index
 
+* [Use the sbt plugin](sbt-plugin.md)
 * [Use Docker Container](docker-container.md)
 * [Build Binary with CMake](cmake.md)
 * [Build Binary with docker-compose](docker-compose.md)
@@ -10,6 +11,8 @@
 
 There are 3 ways to obtain bindgen:
 
+ * @ref:[Use the sbt plugin](sbt-plugin.md)
+
  * @ref:[Use docker container](docker-container.md)
 
  * @ref:[Build binary with CMake](cmake.md)

docs/src/paradox/obtaining-bindgen/sbt-plugin.md

@@ -0,0 +1,61 @@
+# Using the sbt plugin
+
+To add the sbt plugin to your project add the following lines in `project/plugins.sbt`:
+
+@@@ vars
+```sbt
+addSbtPlugin("org.scala-native.bindgen" % "sbt-scala-native-bindgen" % "$project.version$")
+
+resolvers += Resolver.bintrayIvyRepo("scala-native-bindgen", "sbt-plugin")
+resolvers += Resolver.bintrayRepo("scala-native-bindgen", "maven")
+```
+@@@
+
+Next configure the plugin using the settings scoped to either `Compile` or `Test`:
+
+|---------------------------|-------------------|
+|`nativeBindgenHeader`      | The C header file to read.
+|`nativeBindgenPackage`     | Package of the enclosing object. No package by default.
+|`name in nativeBindgen`    | Name of the enclosing object.
+|`nativeBindgenLink`        | Name of library to be linked.
+
+@@@ note
+
+By default the `scala-native-bindgen` executable is downloaded automatically for supported platforms. Set `version in nativeBindgen` (unscoped) to configure the version of the `scala-native-bindgen` to use if you want a version different from the version of the sbt plugin.
+
+In case your platform is not supported, you must compile `scala-native-bindgen` yourself and configure the path to the executable using `nativeBindgenPath`, e.g.:
+
+```sbt
+nativeBindgenPath := file("/path/to/scala-native-bindgen")
+```
+
+@@@
+
+Example settings:
+
+```sbt
+enablePlugins(ScalaNativeBindgenPlugin)
+inConfig(Compile)(
+  Def.settings(
+    nativeBindgenHeader := (resourceDirectory in Compile).value / "header.h",
+    nativeBindgenPackage := Some("org.example.mylib"),
+    nativeBindgenLink := Some("mylib"), // Will pass `-lmylib` to the linker
+    nativeBindgenExclude := Some("__"),
+    name in nativeBindgen := "MyLib"
+  ))
+```
+
+Running `nativeBindgen` will generate a file named `target/scala-2.x/src_managed/main/sbt-scala-native-bindgen//ScalaNativeBindgen.scala` containing something along the following lines:
+
+```scala
+package org.example.mylib
+
+import scala.scalanative._
+import scala.scalanative.native._
+
+@native.link("mylib")
+@native.extern
+object MyLib {
+  // ... left out for brevity ...
+}
+```

project/plugins.sbt

@@ -1,6 +1,10 @@
-addSbtPlugin("org.scala-native" % "sbt-scala-native"           % "0.3.8")
-addSbtPlugin("com.typesafe.sbt" % "sbt-site"                   % "1.3.2")
-addSbtPlugin("io.github.jonas"  % "sbt-paradox-material-theme" % "0.4.0")
-addSbtPlugin("com.typesafe.sbt" % "sbt-ghpages"                % "0.6.2")
+addSbtPlugin("org.scala-native"  % "sbt-scala-native"           % "0.3.8")
+addSbtPlugin("com.typesafe.sbt"  % "sbt-site"                   % "1.3.2")
+addSbtPlugin("io.github.jonas"   % "sbt-paradox-material-theme" % "0.4.0")
+addSbtPlugin("com.typesafe.sbt"  % "sbt-ghpages"                % "0.6.2")
+addSbtPlugin("com.typesafe.sbt"  % "sbt-git"                    % "1.0.0")
+addSbtPlugin("com.github.gseitz" % "sbt-release"                % "1.0.9")
+addSbtPlugin("org.foundweekends" % "sbt-bintray"                % "0.5.4")
+addSbtPlugin("com.eed3si9n"      % "sbt-buildinfo"              % "0.9.0")
 
 libraryDependencies += "org.scala-sbt" %% "scripted-plugin" % sbtVersion.value

sbt-scala-native-bindgen/src/main/scala/org/scalanative/bindgen/sbt/ScalaNativeBindgenPlugin.scala

@@ -3,6 +3,9 @@ package org.scalanative.bindgen.sbt
 import sbt._
 import sbt.Keys._
 
+import java.nio.file.Files
+import java.nio.file.attribute.{PosixFileAttributeView, PosixFilePermission}
+
 import org.scalanative.bindgen.Bindgen
 
 /**
@@ -25,13 +28,21 @@ import org.scalanative.bindgen.Bindgen
  *
  * Keys are defined in [[ScalaNativeBindgenPlugin.autoImport]].
  *
+ *  - `nativeBindgenPath`: Path to the `scala-native-bindgen` executable.
  *  - `nativeBindgenHeader`: The C header file to read.
  *
  *  - `nativeBindgenPackage`: Package of the enclosing object.
  *    No package by default.
  *
  *  - `name in nativeBindgen`: Name of the enclosing object.
  *
+ *  - `version in nativeBindgen`: Version of the `scala-native-bindgen`
+ *    to use when automatically downloading the executable.
+ *
+ *  - `nativeBindgenLink`: Name of library to be linked.
+ *
+ *  - `nativeBindgen`: Generate Scala Native bindings.
+ *
  * @example
  * {{{
  * nativeBindgenHeader in Compile := file("/usr/include/ctype.h")
@@ -42,8 +53,9 @@ import org.scalanative.bindgen.Bindgen
 object ScalaNativeBindgenPlugin extends AutoPlugin {
 
   object autoImport {
+    val ScalaNativeBindgen = config("scala-native-bindgen").hide
     val nativeBindgenPath =
-      taskKey[Option[File]]("Path to the scala-native-bindgen executable")
+      taskKey[File]("Path to the scala-native-bindgen executable")
     val nativeBindgenHeader = taskKey[File]("C header file")
     val nativeBindgenPackage =
       settingKey[Option[String]]("Package for the generated code")
@@ -57,7 +69,46 @@ object ScalaNativeBindgenPlugin extends AutoPlugin {
   override def requires = plugins.JvmPlugin
 
   override def projectSettings: Seq[Setting[_]] =
-    nativeBindgenScopedSettings(Compile)
+    inConfig(ScalaNativeBindgen)(Defaults.configSettings) ++
+    nativeBindgenScopedSettings(Compile) ++
+    Def.settings(
+      ivyConfigurations += ScalaNativeBindgen,
+      version in nativeBindgen := BuildInfo.version,
+      libraryDependencies ++= {
+        artifactName.map { name =>
+          val bindgenVersion = (version in nativeBindgen).value
+          val url =
+            s"${BuildInfo.projectUrl}/releases/download/v$bindgenVersion/$name"
+
+          BuildInfo.organization % name % bindgenVersion % ScalaNativeBindgen from (url)
+        }.toSeq
+      },
+      nativeBindgenPath := {
+        val scalaNativeBindgenUpdate = (update in ScalaNativeBindgen).value
+
+        val artifactFile = artifactName match {
+          case None =>
+            sys.error(
+              "No downloadable binaries available for your OS, " +
+                "please provide path via `nativeBindgenPath`")
+          case Some(name) =>
+            scalaNativeBindgenUpdate
+              .select(artifact = artifactFilter(name = name))
+              .head
+        }
+
+        // Set the executable bit on the expected path to fail if it doesn't exist
+        for (view <- Option(
+                Files.getFileAttributeView(artifactFile.toPath,
+                                          classOf[PosixFileAttributeView]))) {
+          val permissions = view.readAttributes.permissions
+          if (permissions.add(PosixFilePermission.OWNER_EXECUTE))
+            view.setPermissions(permissions)
+        }
+
+        artifactFile
+      }
+    )
 
   private implicit class BindgenOps(val bindgen: Bindgen) extends AnyVal {
     def maybe[T](opt: Option[T], f: Bindgen => T => Bindgen): Bindgen =
@@ -67,23 +118,27 @@ object ScalaNativeBindgenPlugin extends AutoPlugin {
       }
   }
 
+  private val artifactName =
+    Option(System.getProperty("os.name")).collect {
+      case "Mac OS X" => "scala-native-bindgen-darwin"
+      case "Linux"    => "scala-native-bindgen-linux"
+    }
+
   def nativeBindgenScopedSettings(conf: Configuration): Seq[Setting[_]] =
     inConfig(conf)(
-      Seq(
+      Def.settings(
         nativeBindgenHeader := {
           sys.error("nativeBindgenHeader not configured")
         },
-        nativeBindgenPath := None,
         nativeBindgenPackage := None,
         nativeBindgenExclude := None,
-        resourceDirectories in nativeBindgen := resourceDirectories.value,
         sourceGenerators += Def.task { Seq(nativeBindgen.value) },
         name in nativeBindgen := "ScalaNativeBindgen",
         nativeBindgen := {
-          val output = sourceManaged.value / "sbt-scala-native-bindgen" / "nativeBindgen.scala"
+          val output = sourceManaged.value / "sbt-scala-native-bindgen" / "ScalaNativeBindgen.scala"
 
           Bindgen()
-            .bindgenExecutable(nativeBindgenPath.value.get)
+            .bindgenExecutable(nativeBindgenPath.value)
             .header(nativeBindgenHeader.value)
             .name((name in nativeBindgen).value)
             .maybe(nativeBindgenLink.value, _.link)

sbt-scala-native-bindgen/src/sbt-test/bindgen/generate/build.sbt

@@ -1,11 +1,11 @@
 name := "test"
-organization := "org.scalanative.bindgen.sbt.test"
+organization := "org.scala-native.bindgen.sbt.test"
 enablePlugins(ScalaNativeBindgenPlugin)
 scalaVersion := "2.11.12"
 
 inConfig(Compile)(
   Def.settings(
-    nativeBindgenPath := Option(System.getProperty("bindgen.path")).map(file),
+    nativeBindgenPath := file(System.getProperty("bindgen.path")),
     nativeBindgenHeader := (resourceDirectory in Compile).value / "header.h",
     nativeBindgenPackage := Some("org.example.app"),
     nativeBindgenLink := Some("app"),

sbt-scala-native-bindgen/src/sbt-test/bindgen/generate/project/plugins.sbt

@@ -1,3 +1,3 @@
 addSbtPlugin(
-  "org.scalanative.bindgen" % "sbt-scala-native-bindgen" % sys.props(
+  "org.scala-native.bindgen" % "sbt-scala-native-bindgen" % sys.props(
     "plugin.version"))