Merge pull request #333 from bplommer/expose-versioning-info

Expose versioning info in version plugin

Author: armanbilge

kernel/src/main/scala/org/typelevel/sbt/TypelevelKernelPlugin.scala

@@ -16,6 +16,8 @@
 
 package org.typelevel.sbt
 
+import org.typelevel.sbt.kernel.GitHelper
+import org.typelevel.sbt.kernel.V
 import sbt._
 import sbt.plugins.JvmPlugin
 
@@ -37,6 +39,7 @@ object TypelevelKernelPlugin extends AutoPlugin {
           BasicCommands.addAlias(BasicCommands.removeAlias(s, name), name, contents)
         }
       })
+
   }
 
   import autoImport._
@@ -83,4 +86,34 @@ object TypelevelKernelPlugin extends AutoPlugin {
     }
   }
 
+  private[sbt] lazy val currentRelease: Def.Initialize[Option[String]] = Def.setting {
+    // some tricky logic here ...
+    // if the latest release is a pre-release (e.g., M or RC)
+    // and there are no stable releases it is bincompatible with,
+    // then for all effective purposes it is the current release
+
+    val release = previousReleases.value match {
+      case head :: tail if head.isPrerelease =>
+        tail
+          .filterNot(_.isPrerelease)
+          .find(head.copy(prerelease = None).mustBeBinCompatWith(_))
+          .orElse(Some(head))
+      case releases => releases.headOption
+    }
+
+    release.map(_.toString)
+  }
+
+  // latest tagged release, including pre-releases
+  private[sbt] lazy val currentPreRelease: Def.Initialize[Option[String]] = Def.setting {
+    previousReleases.value.headOption.map(_.toString)
+  }
+
+  private[this] lazy val previousReleases: Def.Initialize[List[V]] = Def.setting {
+    val currentVersion = V(version.value).map(_.copy(prerelease = None))
+    GitHelper.previousReleases(fromHead = true, strict = false).filter { v =>
+      currentVersion.forall(v.copy(prerelease = None) <= _)
+    }
+  }
+
 }

site/src/main/scala/org/typelevel/sbt/TypelevelSitePlugin.scala

@@ -26,8 +26,6 @@ import laika.helium.config.ImageLink
 import laika.sbt.LaikaPlugin
 import laika.theme.ThemeProvider
 import mdoc.MdocPlugin
-import org.typelevel.sbt.kernel.GitHelper
-import org.typelevel.sbt.kernel.V
 import org.typelevel.sbt.site._
 import sbt._
 
@@ -38,6 +36,7 @@ import MdocPlugin.autoImport._
 import LaikaPlugin.autoImport._
 import gha.GenerativePlugin
 import GenerativePlugin.autoImport._
+import TypelevelKernelPlugin._
 import TypelevelKernelPlugin.autoImport._
 
 object TypelevelSitePlugin extends AutoPlugin {
@@ -251,36 +250,6 @@ object TypelevelSitePlugin extends AutoPlugin {
       )
   )
 
-  private lazy val currentRelease = Def.setting {
-    // some tricky logic here ...
-    // if the latest release is a pre-release (e.g., M or RC)
-    // and there are no stable releases it is bincompatible with,
-    // then for all effective purposes it is the current release
-
-    val release = previousReleases.value match {
-      case head :: tail if head.isPrerelease =>
-        tail
-          .filterNot(_.isPrerelease)
-          .find(head.copy(prerelease = None).mustBeBinCompatWith(_))
-          .orElse(Some(head))
-      case releases => releases.headOption
-    }
-
-    release.map(_.toString)
-  }
-
-  // latest tagged release, including pre-releases
-  private lazy val currentPreRelease = Def.setting {
-    previousReleases.value.headOption.map(_.toString)
-  }
-
-  private lazy val previousReleases = Def.setting {
-    val currentVersion = V(version.value).map(_.copy(prerelease = None))
-    GitHelper.previousReleases(fromHead = true, strict = false).filter { v =>
-      currentVersion.forall(v.copy(prerelease = None) <= _)
-    }
-  }
-
   private def previewTask = Def
     .taskDyn {
       // inlined from https://github.com/planet42/Laika/blob/9022f6f37c9017f7612fa59398f246c8e8c42c3e/sbt/src/main/scala/laika/sbt/Tasks.scala#L192

versioning/src/main/scala/org/typelevel/sbt/TypelevelVersioningPlugin.scala

@@ -18,6 +18,7 @@ package org.typelevel.sbt
 
 import com.typesafe.sbt.GitPlugin
 import com.typesafe.sbt.SbtGit.git
+import org.typelevel.sbt.TypelevelKernelPlugin._
 import org.typelevel.sbt.kernel.GitHelper
 import org.typelevel.sbt.kernel.V
 import sbt._
@@ -37,6 +38,12 @@ object TypelevelVersioningPlugin extends AutoPlugin {
     lazy val tlUntaggedAreSnapshots =
       settingKey[Boolean](
         "If true, an untagged commit is given a snapshot version, e.g. 0.4-00218f9-SNAPSHOT. If false, it is given a release version, e.g. 0.4-00218f9. (default: true)")
+
+    lazy val tlLatestVersion = settingKey[Option[String]](
+      "The latest tagged version on this branch. Priority is given to the latest stable version, but if you have tagged a binary-breaking prelease version (such as a milestone or release candidate), that will be selected instead. If applicable, this will be the current tagged version.")
+
+    lazy val tlLatestPreReleaseVersion = settingKey[Option[String]](
+      "The latest tagged version on this branch, including milestones and release candidates. If applicable, this will be the current tagged version.")
   }
 
   import autoImport._
@@ -123,7 +130,9 @@ object TypelevelVersioningPlugin extends AutoPlugin {
       if (isSnapshot.value) version += "-SNAPSHOT"
 
       version
-    }
+    },
+    tlLatestVersion := currentRelease.value,
+    tlLatestPreReleaseVersion := currentPreRelease.value
   )
 
   private val Description = """^.*-(\d+)-[a-zA-Z0-9]+$""".r