[PATCH evemu v2 3/4] py: remove heuristic _find_newest_devnode() and rely on evemu

[Benjamin Tissoires]

Evemu can now give us the device node from the library, so remove the
heuristic in python.

This commit breaks the python 3 support:
the property devnode() now returns a bytes (we get the initial information
from the C library). So the test in the constructor "if type(f) == str"
fails.
Things are OK in python 2.X

Signed-off-by: Benjamin Tissoires <benjamin.tissoires at gmail.com>
---

v2:
- remove .decode(evemu.const.ENCODING) call after evemu_get_devnode() C call
  (not needed in Python 2.X)
- splitted the str/unicode with following patch

 python/evemu/__init__.py | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/python/evemu/__init__.py b/python/evemu/__init__.py
index 4f64204..deaf95e 100644
--- a/python/evemu/__init__.py
+++ b/python/evemu/__init__.py
@@ -73,21 +73,8 @@ class Device(object):
 
     def _create_devnode(self):
         self._libevemu.evemu_create_managed(self._evemu_device)
-        return open(self._find_newest_devnode(self.name), 'r+b', buffering=0)
-
-    def _find_newest_devnode(self, target_name):
-        newest_node = (None, float(0))
-        for sysname in glob.glob("/sys/class/input/event*/device/name"):
-            with open(sysname) as f:
-                name = f.read().rstrip()
-                if name == target_name:
-                    ev = re.search("(event\d+)", sysname)
-                    if ev:
-                       devname = os.path.join("/dev/input", ev.group(1))
-                       ctime = os.stat(devname).st_ctime
-                       if ctime > newest_node[1]:
-                           newest_node = (devname, ctime)
-        return newest_node[0]
+        devnode = self._libevemu.evemu_get_devnode(self._evemu_device)
+        return open(devnode, 'r+b', buffering=0)
 
     def _check_is_propfile(self, f):
         if stat.S_ISCHR(os.fstat(f.fileno()).st_mode):
-- 
1.8.4.2