From 3a48a8e3493b96417ce2f9ac304b508076c7dc35 Mon Sep 17 00:00:00 2001
From: Balazs Perlaki-Horvath <ba.perlaki@gmail.com>
Date: Sun, 16 Jun 2024 20:45:10 +0200
Subject: [PATCH] Fix for empty data

---
 Model/Entities/ZimFileMetaData/ZimFileMetaData.mm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Model/Entities/ZimFileMetaData/ZimFileMetaData.mm b/Model/Entities/ZimFileMetaData/ZimFileMetaData.mm
index 3dc41339..d95dc134 100644
--- a/Model/Entities/ZimFileMetaData/ZimFileMetaData.mm
+++ b/Model/Entities/ZimFileMetaData/ZimFileMetaData.mm
@@ -112,6 +112,9 @@
 - (NSData * _Nullable)getFaviconDataFromBook:(kiwix::Book *)book {
     try {
         std::string dataString = book->getIllustrations().at(0)->getData();
+        if(dataString.length() == 0) {
+            return nil;
+        }
         NSData *favIconData = [NSData dataWithBytes: dataString.data() length: dataString.length()];
         return favIconData;
     } catch (std::exception) {