From b421dbba4f60f0e7f13d5f0a6d6cde512fb96113 Mon Sep 17 00:00:00 2001
From: Karol Stasiak <karol.m.stasiak@gmail.com>
Date: Fri, 3 Jan 2020 15:01:55 +0100
Subject: [PATCH] Create output directories if needed; implements #21

---
 src/main/scala/millfork/Main.scala | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/main/scala/millfork/Main.scala b/src/main/scala/millfork/Main.scala
index 6df53266..840a5b1d 100644
--- a/src/main/scala/millfork/Main.scala
+++ b/src/main/scala/millfork/Main.scala
@@ -74,6 +74,18 @@ object Main {
         case _ => "a"
       }
     }
+
+    val outputParent = new File(output).getParentFile
+    if (outputParent.exists()) {
+      if (!outputParent.canWrite || !outputParent.isDirectory) {
+        errorReporting.warn(s"The output directory `${outputParent.getAbsolutePath}` cannot be written to.")
+      }
+    } else {
+      if (!outputParent.mkdirs()) {
+        errorReporting.warn(s"Failed to create the output directory `${outputParent.getAbsolutePath}``")
+      }
+    }
+
     val assOutput = output + ".asm"
 //    val prgOutputs = (platform.outputStyle match {
 //      case OutputStyle.Single => List("default")