[main] Add input thread logic and logging

To the main application, add an input thread that "simply" reads
sys.stdin events and transmits them via core.input.

Additionally, set up some initial logging (yeah, for threading, this is
needed immediately)

bumblebee-status

@@ -1,14 +1,51 @@
 #!/usr/bin/env python
 
 import sys
+import json
+import select
+import logging
+import threading
+
 import core.config
 import core.output
 import core.module
+import core.input
+
+def handle_input():
+    poll = select.poll()
+    poll.register(sys.stdin.fileno(), select.POLLIN)
+
+    while True:
+        events = poll.poll()
+
+        for fileno, event in events:
+            line = '['
+            while line.startswith('['):
+                line = sys.stdin.readline().strip(',').strip()
+            logging.info('input event: {}'.format(line))
+            try:
+                event = json.loads(line)
+                core.input.trigger(event)
+            except ValueError:
+                pass
+
+    poll.unregister(sys.stdin.fileno())
 
 def main():
+    logging.basicConfig(
+        level=logging.DEBUG,
+        format="[%(asctime)s] %(module)-16s %(levelname)-8s %(message)s",
+        stream=sys.stderr
+    )
+
     config = core.config.Config(sys.argv[1:])
     output = core.output.i3()
     modules = []
+
+    input_thread = threading.Thread(target=handle_input)
+    input_thread.daemon = True
+    input_thread.start()
+
     for module in config.modules():
         modules.append(core.module.load(module, config))
     output.modules(modules)
@@ -20,7 +57,6 @@ def main():
         output.draw('statusline')
         output.wait(config.interval())
     output.draw('stop')
-        
 
 if __name__ == "__main__":
     main()

core/input.py

@@ -1,4 +1,6 @@
 import uuid
+import logging
+
 import util.cli
 
 LEFT_MOUSE = 1
@@ -7,6 +9,14 @@ RIGHT_MOUSE = 3
 WHEEL_UP = 4
 WHEEL_DOWN = 5
 
+def button_name(button):
+    if button == LEFT_MOUSE: return 'left-mouse'
+    if button == RIGHT_MOUSE: return 'right-mouse'
+    if button == MIDDLE_MOUSE: return 'middle-mouse'
+    if button == WHEEL_UP: return 'wheel-up'
+    if button == WHEEL_DOWN: return 'wheel-down'
+    return 'n/a'
+
 callbacks = {}
 
 class Object(object):
@@ -18,6 +28,7 @@ class Object(object):
         return self._id
 
 def register(obj, button=None, cmd=None):
+    logging.debug('registering callback {} {}'.format(obj.id(), button))
     callbacks.setdefault(obj.id(), {}).setdefault(button, []).append(cmd)
 
 def trigger(event):