Move alias aware sorting to glances_plugin

glances/plugins/glances_diskio.py

@@ -180,10 +180,7 @@ class Plugin(GlancesPlugin):
             msg = '{:>7}'.format('W/s')
             ret.append(self.curse_add_line(msg))
         # Disk list (sorted by name)
-        for i in sorted(self.stats, key=lambda stat: tuple(map(
-                lambda part: int(part) if part.isdigit() else part.lower(),
-                re.split(r"(\d+|\D+)", stat.get('alias') or stat['disk_name'])
-        ))):
+        for i in self.sorted_stats('disk_name'):
             # Is there an alias for the disk name ?
             disk_real_name = i['disk_name']
             disk_name = self.has_alias(i['disk_name'])

glances/plugins/glances_plugin.py

@@ -286,6 +286,13 @@ class GlancesPlugin(object):
         """Get the short detected OS name (SNMP)."""
         return self._short_system_name
 
+    def sorted_stats(self, key):
+        """Get the stats sorted by an alias (if present) or key."""
+        return sorted(self.stats, key=lambda stat: tuple(map(
+            lambda part: int(part) if part.isdigit() else part.lower(),
+            re.split(r"(\d+|\D+)", self.has_alias(stat[key]) or stat[key])
+        )))
+
     @short_system_name.setter
     def short_system_name(self, short_name):
         """Set the short detected OS name (SNMP)."""