Complain about unknown xrandr output

[lilass.git] / dsl.py

diff --git a/dsl.py b/dsl.py
index d5802764c5e8c6167d05c000b5816fdb7606d8b5..0704d3e8f3da546f9b5e510976cf98bcbebe328a 100755 (executable)
--- a/dsl.py
+++ b/dsl.py
@@ -49,24 +49,33 @@ def loadConfigFile(file):
 def getXrandrInformation():
        p = subprocess.Popen(["xrandr", "-q"], stdout=subprocess.PIPE)
        connectors = {} # map of connector names to a list of resolutions
-       connector = None # current connector
-       for line in p.stdout:
-               # ignore screens
-               if line.startswith("Screen"):
-                       continue
-               # new connector?
-               m = re.search(r'^([\w\-]+) (dis)?connected ', line)
-               if m is not None:
-                       connector = m.groups()[0]
-                       assert connector not in connectors
-                       connectors[connector] = []
-                       continue
-               # new resolution?
-               m = re.search(r'^   ([\d]+)x([\d]+) +', line)
-               if m is not None:
-                       assert connector is not None
-                       connectors[connector].append((int(m.groups()[0]), int(m.groups()[1])))
-       p.communicate()
+       try:
+               connector = None # current connector
+               for line in p.stdout:
+                       # screen?
+                       m = re.search(r'^Screen [0-9]+: ', line)
+                       if m is not None: # ignore this line
+                               connector = None
+                               continue
+                       # new connector?
+                       m = re.search(r'^([\w\-]+) (dis)?connected ', line)
+                       if m is not None:
+                               connector = m.groups()[0]
+                               assert connector not in connectors
+                               connectors[connector] = []
+                               continue
+                       # new resolution?
+                       m = re.search(r'^   ([\d]+)x([\d]+) +', line)
+                       if m is not None:
+                               assert connector is not None
+                               connectors[connector].append((int(m.groups()[0]), int(m.groups()[1])))
+                               continue
+                       # unknown line
+                       raise Exception("Unknown line in xrandr output:\n"+line)
+       finally:
+               # be sure to always proprly finish up with the xrandr
+               p.communicate()
+       # if everything succeededso far, check return code
        if p.returncode != 0: raise Exception("Querying xrandr for data failed.")
        return connectors