[modules/cmus] Re-add cmus module

Re-add a first version of the cmus module originally contributed by
@paxy97.

Still missing:
* Icon themes (status)
* On-click actions

see #23

bumblebee/modules/cmus.py

@@ -0,0 +1,56 @@
+# pylint: disable=C0111,R0903
+
+"""Displays information about the current song in cmus."""
+
+from collections import defaultdict
+
+import string
+
+import bumblebee.util
+import bumblebee.input
+import bumblebee.output
+import bumblebee.engine
+
+class Module(bumblebee.engine.Module):
+    def __init__(self, engine, config):
+        widgets = [
+            bumblebee.output.Widget(name="cmus.prev"),
+            bumblebee.output.Widget(name="cmus.main", full_text=self.description),
+            bumblebee.output.Widget(name="cmus.next"),
+            bumblebee.output.Widget(name="cmus.shuffle"),
+            bumblebee.output.Widget(name="cmus.repeat"),
+        ]
+        super(Module, self).__init__(engine, config, widgets)
+        self._fmt = self.parameter("format", "{artist} - {title} {position}/{duration}")
+
+    def description(self):
+        return string.Formatter().vformat(self._fmt, (), self._tags)
+
+    def update(self, widgets):
+        self._load_song()
+
+    def _load_song(self):
+        info = ""
+        try:
+            info = bumblebee.util.execute("cmus-remote -Q")
+        except RuntimeError:
+            pass
+        self._tags = defaultdict(lambda: '')
+        for line in info.split("\n"):
+            if line.startswith("status"):
+                self._status = line.split(" ", 2)[1]
+            if line.startswith("tag"):
+                key, value = line.split(" ", 2)[1:]
+                self._tags.update({ key: value })
+            if line.startswith("duration"):
+                self._tags.update({
+                    "duration": bumblebee.util.durationfmt(int(line.split(" ")[1]))
+                })
+            if line.startswith("position"):
+                self._tags.update({
+                    "position": bumblebee.util.durationfmt(int(line.split(" ")[1]))
+                })
+            if line.startswith("set repeat "):
+                self._repeat = False if "false" in line else True
+            if line.startswith("set shuffle "):
+                self._shuffle = False if "false" in line else True

bumblebee/modules/cpu.py

@@ -3,6 +3,8 @@
 """Displays CPU utilization across all CPUs."""
 
 import psutil
+import bumblebee.input
+import bumblebee.output
 import bumblebee.engine
 
 class Module(bumblebee.engine.Module):