From 76837c66a7a0b9e5c179f00e95f4c0dc2b9693b2 Mon Sep 17 00:00:00 2001
From: Benoit Pierre <benoit.pierre@gmail.com>
Date: Sun, 24 Nov 2024 23:05:33 +0100
Subject: [PATCH] datastorage: add support for isolating data

Use the `KO_HOME` environment variable if set to determine the data directory location.
---
 datastorage.lua | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/datastorage.lua b/datastorage.lua
index 511ccf730..f06b5d492 100644
--- a/datastorage.lua
+++ b/datastorage.lua
@@ -10,7 +10,9 @@ local full_data_dir
 function DataStorage:getDataDir()
     if data_dir then return data_dir end
 
-    if isAndroid then
+    if os.getenv("KO_HOME") then
+        data_dir = os.getenv("KO_HOME")
+    elseif isAndroid then
         data_dir = android.getExternalStoragePath() .. "/koreader"
     elseif os.getenv("UBUNTU_APPLICATION_ISOLATION") then
         local app_id = os.getenv("APP_ID")