13: Starting playing around with 'ipa' cli script

ipa

@@ -0,0 +1,49 @@
+#!/usr/bin/python
+
+# Authors:
+#   Jason Gerard DeRose <jderose@redhat.com>
+#
+# Copyright (C) 2008  Red Hat
+# see file 'COPYING' for use and warranty information
+#
+# 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; version 2 only
+#
+# 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
+
+"""
+Command Line Interface to IPA.
+"""
+
+import sys
+from ipalib.startup import api
+
+def print_commands():
+	print 'Commands:'
+	m = api.max_cmd_len
+	for c in api.commands:
+		c = c.replace('_', '-')
+		print '  %s  The help on %s' % (c.ljust(m), c)
+
+def print_help(cmd):
+	print 'Help on %s' % cmd
+
+if len(sys.argv) < 2:
+	print_commands()
+	print 'Usage: ipa COMMAND [OPTIONS]'
+	sys.exit(2)
+
+cmd = sys.argv[1]
+
+if cmd not in api.commands:
+	print_commands()
+	print 'ipa: ERROR: unknown command %r' % cmd
+	sys.exit(2)

ipalib/base.py

@@ -94,7 +94,7 @@ class NameSpace(object):
 		"""
 		Returns True if namespace has an item named `key`.
 		"""
-		return key in self.__kw
+		return key.replace('-', '_') in self.__kw
 
 	def __iter__(self):
 		"""
@@ -132,6 +132,10 @@ class Named(object):
 		return self.__class__.__name__
 	name = property(__get_name)
 
+	def __get_doc(self):
+		return self.__class__.__doc__
+	doc = property(__get_doc)
+
 
 class ObjectMember(Named):
 	def __init__(self, obj):
@@ -189,6 +193,7 @@ class Object(Named):
 class API(object):
 	__objects = None
 	__commands = None
+	__max_cmd_len = None
 
 	def __init__(self):
 		self.__obj_d = {}
@@ -201,6 +206,14 @@ class API(object):
 		return self.__commands
 	commands = property(__get_commands)
 
+	def __get_max_cmd_len(self):
+		if self.__max_cmd_len is None:
+			if self.__commands is None:
+				return 0
+			self.__max_cmd_len = max(len(n) for n in self.__commands)
+		return self.__max_cmd_len
+	max_cmd_len = property(__get_max_cmd_len)
+
 	def register_object(self, cls, override=False):
 		assert type(override) is bool
 		if not (inspect.isclass(cls) and issubclass(cls, Object)):