Fix crashing on startup when the config is corrupted

xpple · Aug 19, 2023 · 4aa47a6 · 4aa47a6
1 parent ff666d2
commit 4aa47a6
Showing 1 changed file with 12 additions and 3 deletions.
diff --git a/src/main/java/dev/xpple/betterconfig/impl/BetterConfigInternals.java b/src/main/java/dev/xpple/betterconfig/impl/BetterConfigInternals.java
@@ -11,20 +11,29 @@
 import java.io.IOException;
 import java.lang.reflect.*;
 import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
 import java.util.Collection;
 import java.util.Map;
+import java.util.Objects;
 
 import static dev.xpple.betterconfig.BetterConfig.LOGGER;
 
 public class BetterConfigInternals {
 
     public static void init(ModConfigImpl modConfig) {
-        JsonObject root;
+        JsonObject root = null;
         try (BufferedReader reader = Files.newBufferedReader(modConfig.getConfigsPath())) {
             root = JsonParser.parseReader(reader).getAsJsonObject();
-        } catch (IOException e) {
-            root = new JsonObject();
+        } catch (IOException ignored) {
+        } catch (Exception e) {
             LOGGER.warn("Could not read config file, default values will be used.");
+            LOGGER.warn("The old config file will be renamed.");
+            try {
+                Files.move(modConfig.getConfigsPath(), modConfig.getConfigsPath().resolveSibling("config_old.json"), StandardCopyOption.REPLACE_EXISTING);
+            } catch (IOException ignored) {
+            }
+        } finally {
+            root = Objects.requireNonNullElse(root, new JsonObject());
         }
 
         for (Field field : modConfig.getConfigsClass().getDeclaredFields()) {