s4/net: Support parsing arguments in Python commands.

source4/scripting/python/samba/netcmd/__init__.py

@@ -17,21 +17,79 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import optparse
+from samba import getopt as options, Ldb
+
+
+class Option(optparse.Option):
+    pass
+
+
 class Command(object):
     """A net command."""
 
     def _get_description(self):
-        return self.__doc__
+        return self.__doc__.splitlines()[-1].rstrip("\n")
+
+    def _get_name(self):
+        name = self.__class__.__name__
+        if name.startswith("cmd_"):
+            return name[4:]
+        return name
+
+    name = property(_get_name)
 
     def usage(self):
-        raise NotImplementedError
+        self.parser.print_usage()
 
     description = property(_get_description)
 
+    takes_args = []
+    takes_options = []
+
+    def __init__(self):
+        synopsis = self.name
+        if self.takes_args:
+            synopsis += " " + " ".join(self.takes_args)
+        self.parser = optparse.OptionParser(synopsis)
+        self.parser.add_options(self.takes_options)
+
+    def _run(self, *argv):
+        opts, args = self.parser.parse_args(list(argv))
+        return self.run(*args, **opts.__dict__)
+
     def run(self):
         """Run the command. This should be overriden by all subclasses."""
         raise NotImplementedError(self.run)
 
 
+class SuperCommand(Command):
+    """A command with subcommands."""
+
+    subcommands = {}
+
+    def run(self, subcommand, *args, **kwargs):
+        if not subcommand in subcommands:
+            print >>sys.stderr, "No such subcommand '%s'" % subcommand
+        return subcommands[subcommand].run(*args, **kwargs)
+
+    def usage(self, subcommand=None, *args, **kwargs):
+        if subcommand is None:
+            print "Available subcommands"
+            for subcommand in subcommands:
+                print "\t%s" % subcommand
+            return 0
+        else:
+            if not subcommand in subcommands:
+                print >>sys.stderr, "No such subcommand '%s'" % subcommand
+            return subcommands[subcommand].usage(*args, **kwargs)
+
+
+class FooCommand(Command):
+
+    def run(self, bar):
+        print "LALALA" + bar
+        return 0
+
 commands = {}
-commands["foo"] = Command()
+commands["foo"] = FooCommand()