From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Astralchroma <astralchroma@proton.me>
Date: Thu, 27 Oct 2022 22:19:31 +0100
Subject: [PATCH] Configurable Region Compression Format


diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
index f1237f6fd6414900ffbad0caee31aa83310eeef4..e858436bcf1b234d4bc6e6a117f5224d5c2d9f90 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
@@ -50,7 +50,7 @@ public class RegionFile implements AutoCloseable {
     protected final RegionBitmap usedSectors;
 
     public RegionFile(RegionStorageInfo storageKey, Path directory, Path path, boolean dsync) throws IOException {
-        this(storageKey, directory, path, RegionFileVersion.getSelected(), dsync);
+        this(storageKey, directory, path, RegionFileVersion.getCompressionFormat(), dsync); // Paper - Configurable region compression format
     }
 
     public RegionFile(RegionStorageInfo storageKey, Path path, Path directory, RegionFileVersion compressionFormat, boolean dsync) throws IOException {
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileVersion.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileVersion.java
index cbd892598287c9358c1c2a3840c517462820b389..ef68b57ef1d8d7cb317c417569dd23a777fba4ad 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileVersion.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileVersion.java
@@ -58,6 +58,15 @@ public class RegionFileVersion {
     private final RegionFileVersion.StreamWrapper<InputStream> inputWrapper;
     private final RegionFileVersion.StreamWrapper<OutputStream> outputWrapper;
 
+    // Paper start - Configurable region compression format
+    public static RegionFileVersion getCompressionFormat() {
+        return switch (io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.compressionFormat) {
+            case GZIP -> VERSION_GZIP;
+            case ZLIB -> VERSION_DEFLATE;
+            case NONE -> VERSION_NONE;
+        };
+    }
+    // Paper end - Configurable region compression format
     private RegionFileVersion(
         int id,
         @Nullable String name,