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 169e375c814ff814d15101d09dccc67783f50465..8d20e265872e1f8200de186a69a29f498ceb8588 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
@@ -46,7 +46,7 @@ public class RegionFile implements AutoCloseable {
     protected final RegionBitmap usedSectors;
 
     public RegionFile(Path file, Path directory, boolean dsync) throws IOException {
-        this(file, directory, RegionFileVersion.VERSION_DEFLATE, dsync);
+        this(file, directory, RegionFileVersion.getCompressionFormat(), dsync); // Paper - Configurable region compression format
     }
 
     public RegionFile(Path file, Path directory, RegionFileVersion outputChunkStreamVersion, 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 5fa7a842431dd64c7a0dc5d8e940563a2aeef463..374ff77f15e339500714580673ae8077482ba247 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
@@ -30,6 +30,17 @@ public class RegionFileVersion {
     }, (stream) -> {
         return stream;
     }));
+
+    // 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 final int id;
     private final RegionFileVersion.StreamWrapper<InputStream> inputWrapper;
     private final RegionFileVersion.StreamWrapper<OutputStream> outputWrapper;