1 files changed, 32 insertions, 0 deletions
diff --git a/stage1/cbt.scala b/stage1/cbt.scala
index 4caa085..bc0e944 100644
--- a/stage1/cbt.scala
+++ b/stage1/cbt.scala
@@ -28,6 +28,28 @@ object `package`{
     def /(s: String): File = new File( file, s )
     def parent = lib.realpath(file ++ "/..")
     def string = file.toString
+    /* recursively deletes folders*/
+    def deleteRecursive: Unit = {
+      val s = file.string
+      // some desperate attempts to keep people from accidentally deleting their hard drive
+      assert( file == file.getCanonicalFile, "deleteRecursive requires previous .getCanonicalFile" )
+      assert( file.isAbsolute, "deleteRecursive requires absolute path" )
+      assert( file.string != "", "deleteRecursive requires non-empty file path" )
+      assert( s.split("/").size > 4, "deleteRecursive requires absolute path of at least depth 4" )
+      assert( s.split("\\").size > 4, "deleteRecursive requires absolute path of at least depth 4" )
+      assert( !listRecursive.exists(_.isHidden), "deleteRecursive requires no files to be hidden" )
+      assert( listRecursive.forall(_.canWrite), "deleteRecursive requires all files to be writable" )
+      if( file.isDirectory ){
+        file.listFiles.map(_.deleteRecursive)
+      }
+      //file.delete
+    }
+
+    def listRecursive: Seq[File] = {
+      file +: (
+        if( file.isDirectory ) file.listFiles.flatMap(_.listRecursive).toVector else Seq[File]()
+      )
+    }
   }
   implicit class URLExtensionMethods( url: URL ){
     def ++( s: String ): URL = new URL( url.toString ++ s )
@@ -38,6 +60,16 @@ object `package`{
        case e:java.lang.UnsupportedOperationException if e.getMessage === "empty.max" => None
      }
   }
+  implicit class ClassLoaderExtensions(classLoader: ClassLoader){
+    def canLoad(className: String) = {
+      try{
+        classLoader.loadClass(className)
+        true
+      } catch {
+        case e: ClassNotFoundException => false
+      }
+    }
+  }
   implicit class BuildInterfaceExtensions(build: BuildInterface){
     import build._
     // TODO: if every build has a method triggers a callback if files change