From 4dc5033c80f49bc3024a97ac548256b4f3e74e09 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <zhangsongcui3371@sina.com>
Date: Fri, 10 Apr 2026 08:48:55 +0800
Subject: [PATCH] PowerAdapter (Linux): checks if the device is present

---
 src/detection/battery/battery_linux.c           |  2 +-
 src/detection/poweradapter/poweradapter_linux.c | 15 +++++++++++----
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/detection/battery/battery_linux.c b/src/detection/battery/battery_linux.c
index 236d4d696..1434bb45e 100644
--- a/src/detection/battery/battery_linux.c
+++ b/src/detection/battery/battery_linux.c
@@ -48,7 +48,7 @@ static bool parseBattery(int dfd, const char* id, FFBatteryOptions* options, FFl
         ffStrbufTrimRightSpace(&tmpBuffer);
 
         FF_DEBUG("Battery \"%s\": Scope is \"%s\"", id, tmpBuffer.chars);
-        if (ffStrbufIgnCaseEqualS(&tmpBuffer, "Device")) {
+        if (ffStrbufEqualS(&tmpBuffer, "Device")) {
             return false;
         }
     }
diff --git a/src/detection/poweradapter/poweradapter_linux.c b/src/detection/poweradapter/poweradapter_linux.c
index cb7f7966e..f0423cc5e 100644
--- a/src/detection/poweradapter/poweradapter_linux.c
+++ b/src/detection/poweradapter/poweradapter_linux.c
@@ -9,22 +9,29 @@
 static void parsePowerAdapter(int dfd, const char* id, FFlist* results) {
     FF_STRBUF_AUTO_DESTROY tmpBuffer = ffStrbufCreate();
 
+    {
+        char present = '\0';
+        if (ffReadFileDataRelative(dfd, "present", 1, &present) && present == '0') {
+            return;
+        }
+    }
+
     // type must exist and be "Mains"
     if (ffReadFileBufferRelative(dfd, "type", &tmpBuffer)) {
         ffStrbufTrimRightSpace(&tmpBuffer);
     }
 
-    if (!ffStrbufIgnCaseEqualS(&tmpBuffer, "Mains")) {
+    if (!ffStrbufEqualS(&tmpBuffer, "Mains")) {
         return;
     }
 
     // scope may not exist or must not be "Device" (?)
     if (ffReadFileBufferRelative(dfd, "scope", &tmpBuffer)) {
         ffStrbufTrimRightSpace(&tmpBuffer);
-    }
 
-    if (ffStrbufIgnCaseEqualS(&tmpBuffer, "Device")) {
-        return;
+        if (ffStrbufEqualS(&tmpBuffer, "Device")) {
+            return;
+        }
     }
 
     char online = '\0';