1 files changed, 29 insertions, 3 deletions

diff --git a/pkgs/simple/q-power_supply.nix b/pkgs/simple/q-power_supply.nix
index 5e7cd0d..b7e5aaa 100644
--- a/pkgs/simple/q-power_supply.nix
+++ b/pkgs/simple/q-power_supply.nix
@@ -7,11 +7,25 @@ writeDashBin "q-power_supply" ''
     eval "$(${gnused}/bin/sed -n '
       s/^\([A-Z_]\+=[0-9A-Za-z_-]*\)$/export \1/p
     ' $uevent)"
-    case $POWER_SUPPLY_NAME in
-      AC|Mains)
-        exit # not battery
+    case $POWER_SUPPLY_TYPE in
+      Battery)
+        power_supply_battery "$uevent"
+        ;;
+      Mains)
+        power_supply_mains "$uevent"
+        ;;
+      UPS|USB|Wireless)
+        echo "$uevent: warning: unsuppoerted type: $POWER_SUPPLY_TYPE" >&2
+        exit 1
+        ;;
+      *)
+        echo "$uevent: warning: unknown type: $POWER_SUPPLY_TYPE" >&2
+        exit 2
         ;;
     esac
+  )}
+
+  power_supply_battery() {(
     exec </dev/null
     exec ${gawk}/bin/awk '
       function die(s) {
@@ -146,6 +160,18 @@ writeDashBin "q-power_supply" ''
     '
   )}
 
+  power_supply_mains() {(
+    set -efu
+    uevent=$1
+    case $POWER_SUPPLY_ONLINE in
+      0) printf '%s: offline\n' "$POWER_SUPPLY_NAME";;
+      1) printf '%s: online\n' "$POWER_SUPPLY_NAME";;
+      2) printf '%s: online\n' "$POWER_SUPPLY_NAME";;
+      *) printf '%s: unknown VBUS state: %s\n' "$POWER_SUPPLY_NAME" "$POWER_SUPPLY_ONLINE";;
+    esac
+  )}
+
+
   for uevent in /sys/class/power_supply/*/uevent; do
     power_supply "$uevent" || :
   done