From 36d7d767ddfd350b71b3c191a3bd39d416d60063 Mon Sep 17 00:00:00 2001
From: LAX1DUDE <cgiacun@gmail.com>
Date: Tue, 2 Aug 2022 01:55:42 -0700
Subject: [PATCH] compression speed improvements

---
 .../net/lax1dude/eaglercraft/sp/EPKCompiler.java   |  1 -
 .../lax1dude/eaglercraft/sp/VFSChunkLoader.java    |  2 +-
 .../net/minecraft/src/CompressedStreamTools.java   | 14 ++++++++++++++
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/sp-server/src/main/java/net/lax1dude/eaglercraft/sp/EPKCompiler.java b/sp-server/src/main/java/net/lax1dude/eaglercraft/sp/EPKCompiler.java
index df65b29..3449ed8 100644
--- a/sp-server/src/main/java/net/lax1dude/eaglercraft/sp/EPKCompiler.java
+++ b/sp-server/src/main/java/net/lax1dude/eaglercraft/sp/EPKCompiler.java
@@ -16,7 +16,6 @@ public class EPKCompiler {
 	
 	public EPKCompiler(String name) {
 		try {
-			d = new Deflater(9);
 			os = new DataOutputStream(osb);
 			os.write("EAGPKG!!".getBytes(Charset.forName("UTF-8")));
 			os.writeUTF("\n\n #  eaglercraft package file - " + name + "\n #  eagler eagler eagler eagler eagler eagler eagler\n\n");
diff --git a/sp-server/src/main/java/net/lax1dude/eaglercraft/sp/VFSChunkLoader.java b/sp-server/src/main/java/net/lax1dude/eaglercraft/sp/VFSChunkLoader.java
index ae6357b..d52f920 100644
--- a/sp-server/src/main/java/net/lax1dude/eaglercraft/sp/VFSChunkLoader.java
+++ b/sp-server/src/main/java/net/lax1dude/eaglercraft/sp/VFSChunkLoader.java
@@ -89,7 +89,7 @@ public class VFSChunkLoader implements IChunkLoader {
 		try {
 			NBTTagCompound chunkFileSave = new NBTTagCompound();
 			chunkFileSave.setCompoundTag("Level", chunkFile);
-			save = CompressedStreamTools.compress(chunkFileSave);
+			save = CompressedStreamTools.compressChunk(chunkFileSave);
 		}catch(IOException e) {
 			System.err.println("Corrupted chunk could not be serialized: [" + var2.xPosition + ", " + var2.zPosition + "]");
 			return;
diff --git a/sp-server/src/main/java/net/minecraft/src/CompressedStreamTools.java b/sp-server/src/main/java/net/minecraft/src/CompressedStreamTools.java
index e551068..218cc33 100644
--- a/sp-server/src/main/java/net/minecraft/src/CompressedStreamTools.java
+++ b/sp-server/src/main/java/net/minecraft/src/CompressedStreamTools.java
@@ -12,6 +12,7 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.Collection;
 
+import com.jcraft.jzlib.Deflater;
 import com.jcraft.jzlib.GZIPInputStream;
 import com.jcraft.jzlib.GZIPOutputStream;
 
@@ -73,6 +74,19 @@ public class CompressedStreamTools {
 		return var1.toByteArray();
 	}
 
+	public static byte[] compressChunk(NBTTagCompound par0NBTTagCompound) throws IOException {
+		ByteArrayOutputStream var1 = new ByteArrayOutputStream();
+		DataOutputStream var2 = new DataOutputStream(new GZIPOutputStream(var1, new Deflater(2, 15+16), 2048, true));
+
+		try {
+			write(par0NBTTagCompound, var2);
+		} finally {
+			var2.close();
+		}
+
+		return var1.toByteArray();
+	}
+
 	/**
 	 * Reads from a CompressedStream.
 	 */