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 84b2fd9db39e0cdf3e1cbe6444579f7ca839bc45..9248769e6d357f6eec68945fd7700e79b2942c41 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
@@ -424,11 +424,11 @@ public class RegionFile implements AutoCloseable {
     // Paper end
 
     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
     }
     // Paper start - add can recalc flag
     public RegionFile(Path file, Path directory, boolean dsync, boolean canRecalcHeader) throws IOException {
-        this(file, directory, RegionFileVersion.VERSION_DEFLATE, dsync, canRecalcHeader);
+        this(file, directory, RegionFileVersion.getCompressionFormat(), dsync, canRecalcHeader); // Paper - Configurable region compression format
     }
     // Paper end - add can recalc flag
 
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 4411e427d3b6b592f8a18e61b6c59309cf699d3f..ee27a553b426d3e1e1317bbeb39a3c2d46520e59 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
+
     private final int id;
     private final RegionFileVersion.StreamWrapper<InputStream> inputWrapper;
     private final RegionFileVersion.StreamWrapper<OutputStream> outputWrapper;