Improve morituri configuration handling, help

thomasvs/morituri#141

morituri/common/logcommand.py

@@ -34,6 +34,33 @@ class LogCommand(command.Command, log.Loggable):
         command.Command.__init__(self, parentCommand, **kwargs)
         self.logCategory = self.name
 
+    def parse(self, argv):
+        cmd = self.getRootCommand()
+        if hasattr(cmd, 'config'):
+            config = cmd.config
+            # find section name
+            cmd = self
+            section = []
+            while cmd is not None:
+                section.insert(0, cmd.name)
+                cmd = cmd.parentCommand
+            section = '.'.join(section)
+            # get defaults from config
+            defaults = {}
+            for opt in self.parser.option_list:
+                if opt.dest is None:
+                    continue
+                if 'string' == opt.type:
+                    val = config.get(section, opt.dest)
+                elif opt.action in ('store_false', 'store_true'):
+                    val = config.getboolean(section, opt.dest)
+                else:
+                    val = None
+                if val is not None:
+                    defaults[opt.dest] = val
+            self.parser.set_defaults(**defaults)
+        command.Command.parse(self, argv)
+
     # command.Command has a fake debug method, so choose the right one
 
     def debug(self, format, *args):