From b65b718a341438dae9b88383765034e54d8668c7 Mon Sep 17 00:00:00 2001
From: yadda yadda yadda <grv@dfdx.me>
Date: Sun, 2 Jun 2024 21:31:32 +0200
Subject: [PATCH] always reextract libs prior to loading (#86)

* always reextract libs prior to loading

* fix faux warning on md5 mismatch
---
 .../java/io/github/metarank/lightgbm4j/LGBMBooster.java     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/java/io/github/metarank/lightgbm4j/LGBMBooster.java b/src/main/java/io/github/metarank/lightgbm4j/LGBMBooster.java
index ba23d42..665150b 100644
--- a/src/main/java/io/github/metarank/lightgbm4j/LGBMBooster.java
+++ b/src/main/java/io/github/metarank/lightgbm4j/LGBMBooster.java
@@ -134,6 +134,7 @@ private static void loadNative(String path, String name) throws IOException, Uns
             File libFile = new File(tmp + File.separator + name);
             if (libFile.exists()) {
                 logger.info(libFile + " already exists");
+                extractResource(path + name, name, libFile);
             } else {
                 extractResource(path + name, name, libFile);
             }
@@ -162,6 +163,11 @@ private static void extractResource(String path, String name, File dest) throws
         try {
             byte[] digest = MessageDigest.getInstance("MD5").digest(libByteStream.toByteArray());
             String checksum = new BigInteger(1, digest).toString(16);
+            for (int i=0; i<32 - checksum.length(); i++) {
+                checksum = "0" + checksum;
+            }
+
+
             if (!checksum.equals(expectedDigest)) {
                 logger.warn("\n\n\n");
                 logger.warn("****************************************************");