From 76c5cd2135cf78e503f40cf9192d0302cd4cec90 Mon Sep 17 00:00:00 2001
From: Ilya Kirillov <darthorimar@users.noreply.github.com>
Date: Sat, 24 Jun 2017 19:00:29 +0300
Subject: Filter common childs in dirs

---
 stage2/plugins/ExportBuildInformation.scala | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/stage2/plugins/ExportBuildInformation.scala b/stage2/plugins/ExportBuildInformation.scala
index 6a22363..be61609 100644
--- a/stage2/plugins/ExportBuildInformation.scala
+++ b/stage2/plugins/ExportBuildInformation.scala
@@ -2,6 +2,7 @@ package cbt
 
 import cbt._
 import java.io._
+import java.nio.file._
 import scala.xml._
 
 trait ExportBuildInformation { self: BaseBuild =>
@@ -100,10 +101,8 @@ object BuildInformation {
           val s = build.sources
             .filter(_.exists)
             .map(handleSource)
-            .filter(_.getName != "target") //Dirty hack for cbt's sources
-            .distinct
           if (s.nonEmpty)
-            s
+            commonParents(s)
           else
             Seq(build.projectDirectory)
         }
@@ -122,6 +121,21 @@ object BuildInformation {
         )
       }
 
+      private def commonParents(paths: Seq[File]): Seq[File] = { //Too slow O(n^2)
+        val buffer = scala.collection.mutable.ListBuffer.empty[Path]
+        val sorted = paths
+          .map(_.toPath.toAbsolutePath)
+          .sortWith(_.getNameCount < _.getNameCount)
+        for (x <- sorted) {
+          if (!buffer.exists(x.startsWith)) {
+            buffer += x
+          }
+        }
+        buffer
+          .toList
+          .map(_.toFile)
+      }
+
       private def collectLazyBuilds(dependency: Dependency): Option[BaseBuild] =
         dependency match {
           case l: LazyDependency =>
-- 
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