import sbt._ import Keys._ import java.util.Properties import java.io.FileInputStream import scala.collection.JavaConverters._ object VersionUtil { lazy val baseVersion = settingKey[String]("The base version number from which all others are derived") lazy val baseVersionSuffix = settingKey[String]("Identifies the kind of version to build") lazy val copyrightString = settingKey[String]("Copyright string.") lazy val versionProperties = settingKey[Versions]("Version properties.") lazy val generateVersionPropertiesFile = taskKey[File]("Generating version properties file.") lazy val generateBuildCharacterPropertiesFile = taskKey[File]("Generating buildcharacter.properties file.") lazy val globalVersionSettings = Seq[Setting[_]]( // Set the version properties globally (they are the same for all projects) versionProperties in Global := versionPropertiesImpl.value, version in Global := versionProperties.value.mavenVersion ) lazy val generatePropertiesFileSettings = Seq[Setting[_]]( copyrightString := "Copyright 2002-2015, LAMP/EPFL", resourceGenerators in Compile += generateVersionPropertiesFile.map(file => Seq(file)).taskValue, generateVersionPropertiesFile := generateVersionPropertiesFileImpl.value ) lazy val generateBuildCharacterFileSettings = Seq[Setting[_]]( generateBuildCharacterPropertiesFile := generateBuildCharacterPropertiesFileImpl.value ) case class Versions(canonicalVersion: String, mavenVersion: String, osgiVersion: String, commitSha: String, commitDate: String, isRelease: Boolean) { val githubTree = if(isRelease) "v" + mavenVersion else if(commitSha != "unknown") commitSha else "master" override def toString = s"Canonical: $canonicalVersion, Maven: $mavenVersion, OSGi: $osgiVersion, github: $githubTree" def toMap: Map[String, String] = Map( "version.number" -> canonicalVersion, "maven.version.number" -> mavenVersion, "osgi.version.number" -> osgiVersion ) } /** Compute the canonical, Maven and OSGi version number from `baseVersion` and `baseVersionSuffix`. * Examples of the generated versions: * * ("2.11.8", "SNAPSHOT" ) -> ("2.11.8-20151215-133023-7559aed3c5", "2.11.8-SNAPSHOT", "2.11.8.v20151215-133023-7559aed3c5") * ("2.11.8", "SHA-SNAPSHOT") -> ("2.11.8-20151215-133023-7559aed3c5", "2.11.8-7559aed3c5-SNAPSHOT", "2.11.8.v20151215-133023-7559aed3c5") * ("2.11.8", "" ) -> ("2.11.8", "2.11.8", "2.11.8.v20151215-133023-VFINAL-7559aed3c5") * ("2.11.8", "M3" ) -> ("2.11.8-M3", "2.11.8-M3", "2.11.8.v20151215-133023-M3-7559aed3c5") * ("2.11.8", "RC4" ) -> ("2.11.8-RC4", "2.11.8-RC4", "2.11.8.v20151215-133023-RC4-7559aed3c5") * ("2.11.8-RC4", "SPLIT" ) -> ("2.11.8-RC4", "2.11.8-RC4", "2.11.8.v20151215-133023-RC4-7559aed3c5") * * A `baseVersionSuffix` of "SNAPSHOT" is the default, which is used for local snapshot builds. The PR validation * job uses "SHA-SNAPSHOT". An empty suffix is used for releases. All other suffix values are treated as RC / * milestone builds. The special suffix value "SPLIT" is used to split the real suffix off from `baseVersion` * instead and then apply the usual logic. */ private lazy val versionPropertiesImpl: Def.Initialize[Versions] = Def.setting { val (base, suffix) = { val (b, s) = (baseVersion.value, baseVersionSuffix.value) if(s == "SPLIT") { val split = """([\w+\.]+)(-[\w+\.]+)??""".r val split(b2, sOrNull) = b (b2, Option(sOrNull).map(_.drop(1)).getOrElse("")) } else (b, s) } def executeTool(tool: String) = { val cmd = if (System.getProperty("os.name").toLowerCase.contains("windows")) s"cmd.exe /c tools\\$tool.bat -p" else s"tools/$tool" Process(cmd).lines.head } val date = executeTool("get-scala-commit-date") val sha = executeTool("get-scala-commit-sha").substring(0, 7) // The script produces 10 digits at the moment val (canonicalV, mavenV, osgiV, release) = suffix match { case "SNAPSHOT" => (s"$base-$date-$sha", s"$base-SNAPSHOT", s"$base.v$date-$sha", false) case "SHA-SNAPSHOT" => (s"$base-$date-$sha", s"$base-$sha-SNAPSHOT", s"$base.v$date-$sha", false) case "" => (s"$base", s"$base", s"$base.v$date-VFINAL-$sha", true) case suffix => (s"$base-$suffix", s"$base-$suffix", s"$base.v$date-$suffix-$sha", true) } Versions(canonicalV, mavenV, osgiV, sha, date, release) } private lazy val generateVersionPropertiesFileImpl: Def.Initialize[Task[File]] = Def.task { writeProps(versionProperties.value.toMap + ("copyright.string" -> copyrightString.value), (resourceManaged in Compile).value / s"${thisProject.value.id}.properties") } private lazy val generateBuildCharacterPropertiesFileImpl: Def.Initialize[Task[File]] = Def.task { writeProps(versionProperties.value.toMap, (baseDirectory in ThisBuild).value / "buildcharacter.properties") } private def writeProps(m: Map[String, String], propFile: File): File = { val props = new Properties m.foreach { case (k, v) => props.put(k, v) } // unfortunately, this will write properties in arbitrary order // this makes it harder to test for stability of generated artifacts // consider using https://github.com/etiennestuder/java-ordered-properties // instead of java.util.Properties IO.write(props, null, propFile) propFile } /** The global versions.properties data */ lazy val versionProps: Map[String, String] = { val props = new Properties() val in = new FileInputStream(file("versions.properties")) try props.load(in) finally in.close() props.asScala.toMap } /** Get a subproject version number from `versionProps` */ def versionNumber(name: String): String = versionProps(s"$name.version.number") }