Merge pull request #56 from dwijnand/relativize-fix-3

Add a check for pre-normalize'd paths, to relativize
sbt · Jul 14, 2017 · f55849d · f55849d
2 parents 16c2e31 + d2ec6df
commit f55849d
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diff --git a/io/src/main/scala/sbt/io/IO.scala b/io/src/main/scala/sbt/io/IO.scala
@@ -564,7 +564,7 @@ object IO {
   def relativize(base: File, file: File): Option[String] = {
     val basePath = base.toPath
     val filePath = file.toPath
-    if (filePath.normalize() startsWith basePath.normalize()) {
+    if ((filePath startsWith basePath) || (filePath.normalize() startsWith basePath.normalize())) {
       val relativePath = catching(classOf[IllegalArgumentException]) opt (basePath relativize filePath)
       relativePath map (_.toString)
     } else None

diff --git a/io/src/test/scala/sbt/io/IOSpec.scala b/io/src/test/scala/sbt/io/IOSpec.scala
@@ -23,4 +23,15 @@ class IOSpec extends FlatSpec with Matchers {
     IO.relativize(rootDir.toFile, nestedFile) shouldBe Some("meh.file")
     IO.relativize(relativeRootDir, nestedFile) shouldBe Some("../../meh.file")
   }
+
+  it should "relativize . dirs" in {
+    val base = new File(".")
+    val file1 = new File("./.git")
+    val file2 = new File(".", ".git")
+    val file3 = new File(base, ".git")
+
+    IO.relativize(base, file1) shouldBe Some(".git")
+    IO.relativize(base, file2) shouldBe Some(".git")
+    IO.relativize(base, file3) shouldBe Some(".git")
+  }
 }