Add moc.py, plugin for Music On Console

As moc-titler ported to Python/gmon

  [1]: https://github.com/AloisMahdal/moc-titler

plugins/moc.py

@@ -0,0 +1,68 @@
+# -*- coding: utf-8 -*-
+
+import gmon
+
+import subprocess
+
+
+class TrackData(object):
+
+    _field_names = ['state', 'artist', 'album', 'song', 'ct', 'tt']
+
+    def __init__(self):
+        self.state = ""
+        self.artist = ""
+        self.album = ""
+        self.song = ""
+        self.ct = ""    # current time
+        self.tt = ""    # total time
+
+    def load(self):
+        for fieldname in self.__class__._field_names:
+            value = subprocess.check_output(['mocp', '-Q', "%" + fieldname])
+            setattr(self, fieldname, value.strip())
+
+
+class MocTitler(object):
+
+    def __init__(self):
+        self.title = "(unknown)"
+        self.td = TrackData()
+
+    def read_data(self):
+        self.td.load()
+
+    def mocp_running(self):
+        cmd = 'ps -eo comm | grep -q mocp'
+        return subprocess.call(cmd, shell=True) == 0
+
+    def assemble_title(self):
+        """Assemble the data to human-readable format"""
+        d = self.td
+        title = ""
+        title += "(%s) " % d.state
+        title += d.artist if d.artist else ""
+        title += " " if d.artist and d.album else ""
+        title += "[%s]" % d.album if d.album else ""
+        if (d.artist or d.album) and (d.song or d.tt):
+            title += ": "
+        title += d.song if d.song else ""
+        title += " (%s/%s)" % (d.ct, d.tt) if d.tt else ""
+
+        return title
+
+    def get_title(self):
+        """Get title or explaining message"""
+        try:
+            self.td.load()
+            return self.assemble_title()
+        except subprocess.CalledProcessError:
+            return "(not running)"
+
+
+class Plugin(gmon.BasePlugin):
+
+    name = "moc"
+
+    def render_plain(self):
+        return MocTitler().get_title()