From 2f7f7f4f6ba6328a7416a4619c7ce5bd10719b02 Mon Sep 17 00:00:00 2001
From: mcrcortex <18544518+MCRcortex@users.noreply.github.com>
Date: Sat, 4 Jan 2025 00:22:22 +1000
Subject: [PATCH] Exclude unused shared objects/jni, reducing the jar final
 size by ~4.5x

Thanks earth for helping with hell
---
 .gitignore   |  5 ++++-
 build.gradle | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index b740e729..c44ef9af 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 # Project exclude paths
 /.gradle/
-/build/
\ No newline at end of file
+/.idea/
+/build/
+/run/
+/out/
diff --git a/build.gradle b/build.gradle
index 97aa5a72..510c9874 100644
--- a/build.gradle
+++ b/build.gradle
@@ -126,6 +126,39 @@ jar {
     }
 }
 
+tasks.register('excludeUnused', Zip) {
+    //outputs.upToDateWhen { false }
+    archiveExtension.set("jar")
+    entryCompression(ZipEntryCompression.STORED)
+    destinationDirectory.set temporaryDir
+    archiveFileName.set processIncludeJars.outputDirectory.asFileTree.filter {
+        it.name.startsWith('rocksdb')
+    }.first().name
+    processIncludeJars.outputDirectory.asFileTree.each {
+        if (it.name.startsWith('rocksdb')) {
+            from zipTree(it)
+        }
+    }
+    exclude {
+        def file = it.name
+        if (file.endsWith(".jnilib")) {
+            return true
+        }
+        if (!file.endsWith(".so")) {
+            return false
+        }
+        return ["osx", "linux32", "s390x", "riscv64", "ppc64le", "aarch64"].any(file::contains)
+    }
+    dependsOn processIncludeJars
+}
+
+remapJar {
+    nestedJars = nestedJars.filter {
+        !it.name.startsWith('rocksdb')
+    }
+    nestedJars.from excludeUnused
+}
+
 project.ext.lwjglVersion = "3.3.3"
 project.ext.lwjglNatives = "natives-windows"