[core] restructure to allow PIP packaging

OK - so I have to admit I *hate* the fact that PIP seems to require a
subdirectory named like the library.

But since the PIP package is something really nifty to have (thanks to
@tony again!!!), I updated the codebase to hopefully conform with what
PIP expects. Testruns so far look promising...

bumblebee_status/modules/contrib/hddtemp.py

@@ -0,0 +1,95 @@
+# -*- coding: utf-8 -*-
+
+"""Fetch hard drive temeperature data from a hddtemp daemon
+that runs on localhost and default port (7634)
+
+contributed by `somospocos <https://github.com/somospocos>`_ - many thanks!
+"""
+
+import socket
+
+import core.module
+import core.widget
+
+HOST = "localhost"
+PORT = 7634
+
+CHUNK_SIZE = 1024
+RECORD_SIZE = 5
+SEPARATOR = "|"
+
+
+class Module(core.module.Module):
+    def __init__(self, config, theme):
+        super().__init__(config, theme, core.widget.Widget(self.hddtemps))
+        self.__hddtemps = self.__get_hddtemps()
+
+    def hddtemps(self, _):
+        return self.__hddtemps
+
+    def __fetch_data(self):
+        """fetch data from hddtemp service"""
+        try:
+            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
+                sock.connect((HOST, PORT))
+                data = ""
+                while True:
+                    chunk = sock.recv(CHUNK_SIZE)
+                    if chunk:
+                        data += str(chunk)
+                    else:
+                        break
+            return data
+        except (AttributeError, socket.error) as e:
+            pass
+
+    @staticmethod
+    def __get_parts(data):
+        """
+            split data using | separator and remove first item
+            (because the first item is empty)
+        """
+        parts = data.split("|")[1:]
+        return parts
+
+    @staticmethod
+    def __partition_parts(parts):
+        """
+            partition parts: one device record is five (5) items
+        """
+        per_disk = [
+            parts[i : i + RECORD_SIZE] for i in range(len(parts))[::RECORD_SIZE]
+        ]
+        return per_disk
+
+    @staticmethod
+    def __get_name_and_temp(device_record):
+        """
+            get device name (without /dev part, to save space on bar)
+            and temperature (in °C) as tuple
+        """
+        device_name = device_record[0].split("/")[-1]
+        device_temp = device_record[2]
+        return (device_name, device_temp)
+
+    @staticmethod
+    def __get_hddtemp(device_record):
+        name, temp = device_record
+        hddtemp = "{}+{}°C".format(name, temp)
+        return hddtemp
+
+    def __get_hddtemps(self):
+        data = self.__fetch_data()
+        if data is None:
+            return "n/a"
+        parts = self.__get_parts(data)
+        per_disk = self.__partition_parts(parts)
+        names_and_temps = [self.__get_name_and_temp(x) for x in per_disk]
+        hddtemps = [self.__get_hddtemp(x) for x in names_and_temps]
+        return SEPARATOR.join(hddtemps)
+
+    def update(self):
+        self.__hddtemps = self.__get_hddtemps()
+
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4