Configurable Region Compression Format (#8505)

patches/server/Configurable-Region-Compression-Format.patch

@@ -0,0 +1,46 @@
+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 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 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
+@@ -0,0 +0,0 @@ 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 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 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
+@@ -0,0 +0,0 @@ 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;

patches/server/Paper-config-files.patch

@@ -589,6 +589,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        public boolean allowHeadlessPistons = false;
 +        @Comment("This setting controls if grindstones should be able to output overstacked items (such as cursed books).")
 +        public boolean allowGrindstoneOverstacking = false;
++        @Comment("This setting controls what compression format is used for region files.")
++        public CompressionFormat compressionFormat = CompressionFormat.ZLIB;
++
++        public enum CompressionFormat {
++            GZIP,
++            ZLIB,
++            NONE
++        }
 +    }
 +
 +    public Commands commands;