From 906a589715dc69876da77ce5e20c15ff6b985abf Mon Sep 17 00:00:00 2001
From: yubo <3597387401@qq.com>
Date: Thu, 9 Apr 2026 21:18:15 +0800
Subject: [PATCH] fix the io failure for hotplug-in device

---
 src/modules/battery.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/modules/battery.cpp b/src/modules/battery.cpp
index d39c4920..7984c24d 100644
--- a/src/modules/battery.cpp
+++ b/src/modules/battery.cpp
@@ -126,7 +126,14 @@ void waybar::modules::Battery::refreshBatteries() {
           // Ignore non-system power supplies unless explicitly requested
           if (!bat_defined && fs::exists(node.path() / "scope")) {
             std::string scope;
-            std::ifstream(node.path() / "scope") >> scope;
+            try{
+              //for hotplug-in device, access it is always unstable because you may remove the device anytime
+              //so just allow failure happen and do nothing
+              std::ifstream(node.path()/"scope")>>scope;
+            }catch(const std::ifstream::failure& e){
+              scope.clear();
+              continue;
+            }
             if (g_ascii_strcasecmp(scope.data(), "device") == 0) {
               continue;
             }