wifi: use injected properties

kb100 · kb100 · commit e6e9031e87d0 · 2018-08-23T22:22:15.000-05:00
See vivien#132
diff --git a/wifi/README.md b/wifi/README.md
@@ -11,6 +11,6 @@ If no instance is specified, wlan0 is used.
 [wifi]
 command=$SCRIPT_DIR/wifi
 label=wifi:
-#instance=wlp3s0
+#INTERFACE=wlan0
 interval=60
 ```
diff --git a/wifi/i3blocks.conf b/wifi/i3blocks.conf
@@ -1,5 +1,5 @@
 [wifi]
 command=$SCRIPT_DIR/wifi
 label=wifi:
-#instance=wlp3s0
+#INTERFACE=wlan0
 interval=60
diff --git a/wifi/wifi b/wifi/wifi
@@ -15,9 +15,9 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #------------------------------------------------------------------------
-
-INTERFACE="${BLOCK_INSTANCE:-wlan0}"
-
+if [[ -z "$INTERFACE" ]] ; then
+    INTERFACE="${BLOCK_INSTANCE:-wlan0}"
+fi
 #------------------------------------------------------------------------
 
 # As per #36 -- It is transparent: e.g. if the machine has no battery or wireless
