1.16.3-rc1, assets copying: check if files are identically, else force extract (rename to .old)

src/main/java/de/bixilon/minosoft/logging/Log.java

@@ -145,6 +145,9 @@ public class Log {
     }
 
     public static void setLevel(LogLevels level) {
+        if (Log.level == level) {
+            return;
+        }
         Log.info(String.format("Log level changed from %s to %s", Log.level, level));
         Log.level = level;
     }

src/main/java/de/bixilon/minosoft/util/FolderUtil.java

@@ -13,11 +13,14 @@
 
 package de.bixilon.minosoft.util;
 
+import de.bixilon.minosoft.logging.Log;
+
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.net.URI;
 import java.nio.file.Files;
+import java.nio.file.Path;
 
 public final class FolderUtil {
 
@@ -31,8 +34,14 @@ public final class FolderUtil {
             }
             File out = new File(to + File.separator + entry);
             if (out.exists()) {
+                // check
+                if (Files.mismatch(Path.of(entryFile.getPath()), Path.of(out.getPath())) == -1) {
+                    // identically
                     continue;
                 }
+                // move file to an other location and re extract
+                moveFileToOld(out);
+            }
             File outFolder = new File(out.getParent());
             if (!outFolder.exists()) {
                 outFolder.mkdirs();
@@ -40,4 +49,14 @@ public final class FolderUtil {
             Files.copy(new FileInputStream(entryFile), out.toPath());
         }
     }
+
+    private static void moveFileToOld(File file) {
+        File newFile = new File(file.getAbsolutePath() + ".old");
+        if (newFile.exists()) {
+            newFile.delete();
+            Log.verbose(String.format("Deleted file: %s", newFile.getAbsoluteFile()));
+        }
+        file.renameTo(newFile);
+        Log.verbose(String.format("Renamed %s to: %s", newFile.getAbsoluteFile(), newFile.getName()));
+    }
 }