From 8c12daa4079f8caa830bf5d465e9ae2065d568f5 Mon Sep 17 00:00:00 2001
From: Frank Scherrer <frank.scherrer@1und1.de>
Date: Fri, 24 Aug 2018 10:22:28 +0200
Subject: [PATCH] add 'which' function to utils and use for 'iwgetid'

---
 bumblebee/modules/nic.py |  4 +++-
 bumblebee/util.py        | 17 +++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/bumblebee/modules/nic.py b/bumblebee/modules/nic.py
index ca47409..c1c60f8 100644
--- a/bumblebee/modules/nic.py
+++ b/bumblebee/modules/nic.py
@@ -35,6 +35,8 @@ class Module(bumblebee.engine.Module):
                 self._states["include"].append(state)
         self._format = self.parameter("format","{intf} {state} {ip} {ssid}");
         self._update_widgets(widgets)
+        self.iwgetid = bumblebee.util.which("iwgetid")
+
 
     def update(self, widgets):
         self._update_widgets(widgets)
@@ -106,7 +108,7 @@ class Module(bumblebee.engine.Module):
     def get_ssid(self, intf):
         if self._iswlan(intf):
             try:
-                return subprocess.check_output(["iwgetid","-r",intf]).strip().decode('utf-8')
+                return subprocess.check_output([self.iwgetid,"-r",intf]).strip().decode('utf-8')
             except:
                 return ""
         return ""
diff --git a/bumblebee/util.py b/bumblebee/util.py
index 8032032..f5bb4ea 100644
--- a/bumblebee/util.py
+++ b/bumblebee/util.py
@@ -60,4 +60,21 @@ def durationfmt(duration, shorten=False, suffix=False):
 
     return "{}{}".format(res, suf if suffix else "")
 
+def which(program):
+    import os
+    def is_exe(fpath):
+        return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+    fpath, fname = os.path.split(program)
+    if fpath:
+        if is_exe(program):
+            return program
+    else:
+        for path in os.environ["PATH"].split(os.pathsep) + ["/sbin", "/usr/sbin/", "/usr/local/sbin"]:
+            exe_file = os.path.join(path, program)
+            if is_exe(exe_file):
+                return exe_file
+
+    return None
+
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4