Save downloaded libraries to .tmp, then rename once successful to avo…

…id creating broken jars on errors
GTNewHorizons · Apr 14, 2024 · c7bc58f · c7bc58f
1 parent a62c401
commit c7bc58f
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/main/java/me/eigenraven/lwjgl3ify/relauncher/Downloader.java b/src/main/java/me/eigenraven/lwjgl3ify/relauncher/Downloader.java
@@ -348,9 +348,13 @@ public Path targetLocation() {
 
         public void download() throws IOException {
             final Path targetDir = targetLocation.getParent();
+            final Path tempLocation = targetDir.resolve(
+                targetLocation.getFileName()
+                    .toString() + ".tmp");
 
             Files.createDirectories(targetDir);
             Files.deleteIfExists(targetLocation);
+            Files.deleteIfExists(tempLocation);
 
             byte[] data = null;
             Relauncher.logger.info("Downloading {} from {}", targetLocation, sourceUrl);
@@ -372,7 +376,8 @@ public void download() throws IOException {
                 }
             }
             Objects.requireNonNull(data);
-            Files.write(targetLocation, data);
+            Files.write(tempLocation, data);
+            Files.move(tempLocation, targetLocation);
         }
 
         @Override