reworking messages

1) start 'bin/secop-server test'
2) connect to localhost port 10767
3) enter help<enter>
4) enjoy

Change-Id: I488d5f9cdca8c91c583691ab23f541a4a8759f4e

secop/lib/__init__.py

@@ -0,0 +1,61 @@
+#  -*- coding: utf-8 -*-
+# *****************************************************************************
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# Module authors:
+#   Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
+#
+# *****************************************************************************
+
+"""Define helpers"""
+
+
+class attrdict(dict):
+    """a normal dict, providing access also via attributes"""
+
+    def __getattr__(self, key):
+        return self[key]
+
+    def __setattr__(self, key, value):
+        self[key] = value
+
+
+def clamp(_min, value, _max):
+    """return the median of 3 values,
+
+    i.e. value if min <= value <= max, else min or max depending on which side
+    value lies outside the [min..max] interval
+    """
+    # return median, i.e. clamp the the value between min and max
+    return sorted([_min, value, _max])[1]
+
+
+def get_class(spec):
+    """loads a class given by string in dotted notaion (as python would do)"""
+    modname, classname = spec.rsplit('.', 1)
+    import importlib
+    module = importlib.import_module('secop.' + modname)
+#    module = __import__(spec)
+    return getattr(module, classname)
+
+
+if __name__ == '__main__':
+    print "minimal testing: lib"
+    d = attrdict(a=1, b=2)
+    _ = d.a + d['b']
+    d.c = 9
+    d['d'] = 'c'
+    assert d[d.d] == 9