From 03607b219aa854c3d36ae572d2ac6fca8a1bd29e Mon Sep 17 00:00:00 2001
From: Stefan Zeiger <szeiger@novocode.com>
Date: Wed, 11 Nov 2015 14:55:02 +0100
Subject: [nomerge] Build man pages and scala-dist.jar from sbt
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- ManMaker is compiled in a new subproject “manual”. A simple command
  line runner complements the ant task so that it can be run from sbt.

- Another new subproject “scala-dist” is responsible for building
  the scala-dist.jar artifact.
---
 build.sbt                                     | 48 ++++++++++++++++++++++++++-
 src/manual/scala/tools/docutil/ManMaker.scala | 10 ++++++
 2 files changed, 57 insertions(+), 1 deletion(-)

diff --git a/build.sbt b/build.sbt
index 6540d0b9c0..aaf79888d8 100644
--- a/build.sbt
+++ b/build.sbt
@@ -185,7 +185,7 @@ lazy val library = configureAsSubproject(project)
     includeFilter in unmanagedResources in Compile := "*.tmpl" | "*.xml" | "*.js" | "*.css" | "rootdoc.txt",
     // Include forkjoin classes in scala-library.jar
     mappings in Compile in packageBin ++=
-      (mappings in Compile in packageBin in LocalProject("forkjoin")).value
+      (mappings in Compile in packageBin in forkjoin).value
   )
   .settings(filterDocSources("*.scala" -- (regexFileFilter(".*/runtime/.*\\$\\.scala") ||
                                            regexFileFilter(".*/runtime/ScalaRunTime\\.scala") ||
@@ -395,6 +395,52 @@ lazy val test = project.
      )
   )
 
+lazy val manual = configureAsSubproject(project)
+  .settings(
+    libraryDependencies ++= Seq(scalaXmlDep, antDep),
+    classDirectory in Compile := (target in Compile).value / "classes"
+  )
+  .settings(disableDocsAndPublishingTasks: _*)
+  .dependsOn(library)
+
+lazy val scalaDist = Project("scala-dist", file(".") / "target" / "scala-dist-dist-src-dummy")
+  .settings(commonSettings: _*)
+  .settings(
+    doc := file("!!! NO DOCS !!!"),
+    mappings in Compile in packageBin ++= {
+      val binBaseDir = buildDirectory.value / "pack"
+      val binMappings = (mkBin in dist).value.pair(relativeTo(binBaseDir), errorIfNone = false)
+      // With the way the resource files are spread out over the project sources we can't just add
+      // an unmanagedResourceDirectory, so we generate the mappings manually:
+      val docBaseDir = (baseDirectory in ThisBuild).value
+      val docMappings = (docBaseDir / "doc").*** pair relativeTo(docBaseDir)
+      val resBaseDir = (baseDirectory in ThisBuild).value / "src/manual/scala/tools/docutil/resources"
+      val resMappings = resBaseDir ** ("*.html" | "*.css" | "*.gif" | "*.png") pair (p => relativeTo(resBaseDir)(p).map("doc/tools/" + _))
+      docMappings ++ resMappings ++ binMappings
+    },
+    resourceGenerators in Compile += Def.task {
+      val command = "fsc, scala, scalac, scaladoc, scalap"
+      val htmlOut = (resourceManaged in Compile).value / "doc/tools"
+      val manOut = (resourceManaged in Compile).value / "genman"
+      val fixedManOut = (resourceManaged in Compile).value / "man"
+      IO.createDirectory(htmlOut)
+      IO.createDirectory(manOut / "man1")
+      toError(runner.value.run("scala.tools.docutil.ManMaker",
+        (fullClasspath in Compile in manual).value.files,
+        Seq(command, htmlOut.getAbsolutePath, manOut.getAbsolutePath),
+        streams.value.log))
+      (manOut ** "*.1" pair rebase(manOut, fixedManOut)).foreach { case (in, out) =>
+        // Generated manpages should always use LF only. There doesn't seem to be a good reason
+        // for generating them with the platform EOL first and then converting them but that's
+        // what the ant build does.
+        IO.write(out, IO.readBytes(in).filterNot(_ == '\r'))
+      }
+      (htmlOut ** "*.html").get ++ (fixedManOut ** "*.1").get
+    }.taskValue,
+    managedResourceDirectories in Compile := Seq((resourceManaged in Compile).value),
+    packageOptions in Compile in packageBin := Seq.empty
+  )
+
 lazy val root = (project in file(".")).
   aggregate(library, forkjoin, reflect, compiler, interactive, repl, replJline, replJlineEmbedded,
     scaladoc, scalap, actors, partestExtras, junit).settings(
diff --git a/src/manual/scala/tools/docutil/ManMaker.scala b/src/manual/scala/tools/docutil/ManMaker.scala
index 802b357f5f..4b8bfc6606 100644
--- a/src/manual/scala/tools/docutil/ManMaker.scala
+++ b/src/manual/scala/tools/docutil/ManMaker.scala
@@ -57,3 +57,13 @@ class ManMaker extends Task {
     })
   }
 }
+
+/** Command line runner for ManMaker which is called from the sbt build. */
+object ManMaker extends App {
+  val Array(commands, htmlout, manout) = args
+  val mm = new ManMaker
+  mm.setCommand(commands)
+  mm.setHtmlout(new File(htmlout))
+  mm.setManout(new File(manout))
+  mm.execute()
+}
-- 
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