Hide license column on sbt 1.3.x (#17)

Author: ennru

src/main/scala/com/lightbend/paradox/dependencies/DependenciesDirective.scala

@@ -21,15 +21,16 @@ import net.virtualvoid.sbt.graph.{ModuleTree, ModuleTreeNode}
 import org.pegdown.Printer
 import org.pegdown.ast.{DirectiveNode, Visitor}
 
-class DependenciesDirective(projectIdToDependencies: String => ModuleTree) extends LeafBlockDirective("dependencies") {
+class DependenciesDirective(showLicenses: Boolean)(projectIdToDependencies: String => ModuleTree)
+    extends LeafBlockDirective("dependencies") {
   def render(node: DirectiveNode, visitor: Visitor, printer: Printer): Unit = {
     val projectId = node.attributes.value("projectId")
     val tree      = projectIdToDependencies(projectId)
     printer.println()
     val classes = Seq("dependencies", node.attributes.classesString).filter(_.nonEmpty)
     printer.print(s"""<dl class="${classes.mkString(" ")}">""")
     if (tree.roots.flatMap(_.children).nonEmpty) {
-      renderDirect(node, tree.roots, printer)
+      renderDirect(node, tree.roots, showLicenses, printer)
       renderTree(node, tree.roots, printer)
     } else {
       printer.print("<dt>Direct dependencies</dt><dd>This module has no dependencies.</dd>")
@@ -38,10 +39,12 @@ class DependenciesDirective(projectIdToDependencies: String => ModuleTree) exten
     printer.println()
   }
 
-  private def renderDirect(node: DirectiveNode, roots: Seq[ModuleTreeNode], p: Printer): Unit = {
+  private def renderDirect(node: DirectiveNode, roots: Seq[ModuleTreeNode], showLicenses: Boolean, p: Printer): Unit = {
     p.print("<dt>Direct dependencies</dt><dd><table>")
     p.indent(2).println()
-    p.print("<thead><tr><th>Organization</th><th>Artifact</th><th>Version</th><th>License</th></tr></thead>").println()
+    p.print("<thead><tr><th>Organization</th><th>Artifact</th><th>Version</th>")
+    if (showLicenses) p.print("<th>License</th></tr>")
+    p.print("</thead>").println()
     p.print("<tbody>")
     p.indent(2)
     for {
@@ -61,7 +64,7 @@ class DependenciesDirective(projectIdToDependencies: String => ModuleTree) exten
         )
         .print(moduleId.version)
         .print("</a></td>")
-      d.node.license.foreach(l => p.print("<td>").print(l).print("</td>"))
+      if (showLicenses) d.node.license.foreach(l => p.print("<td>").print(l).print("</td>"))
       p.print("</tr>")
     }
     p.indent(-2).println()

src/main/scala/com/lightbend/paradox/dependencies/ParadoxDependenciesPlugin.scala

@@ -34,6 +34,9 @@ object ParadoxDependenciesPlugin extends AutoPlugin {
   override def projectSettings: Seq[Setting[_]] = dependenciesSettings(Compile)
 
   def dependenciesZeroSettings: Seq[Setting[_]] = Seq(
+    paradoxDependenciesShowLicenses := {
+      sbtVersion.value.startsWith("1.1.") || sbtVersion.value.startsWith("1.2.")
+    },
     paradoxDependenciesModuleTrees := Def.taskDyn {
           val projectsToFilter = paradoxDependenciesProjects.?.value
             .map(inProjects)
@@ -54,7 +57,7 @@ object ParadoxDependenciesPlugin extends AutoPlugin {
             val trees = paradoxDependenciesModuleTrees.value
             Seq(
               { _: Writer.Context ⇒
-                new DependenciesDirective(projectId => {
+                new DependenciesDirective(paradoxDependenciesShowLicenses.value)(projectId => {
                   trees.get(projectId) match {
                     case Some(deps) => deps
                     case _ => throw new Error(s"Could not retrieve dependency information for project [$projectId]")

src/main/scala/com/lightbend/paradox/dependencies/ParadoxDependenciesPluginKeys.scala

@@ -21,6 +21,8 @@ import net.virtualvoid.sbt.graph.ModuleTree
 import sbt._
 
 trait ParadoxDependenciesPluginKeys {
-  val paradoxDependenciesProjects    = settingKey[Seq[ProjectReference]]("Projects to get the dependency information for")
+  val paradoxDependenciesProjects = settingKey[Seq[ProjectReference]]("Projects to get the dependency information for")
+  val paradoxDependenciesShowLicenses =
+    settingKey[Boolean]("Show the license column (license information is unavailable with sbt 1.3.2)")
   val paradoxDependenciesModuleTrees = taskKey[Map[String, ModuleTree]]("Retrieved module trees")
 }