On Wednesday, April 2, 2014 4:33:07 PM UTC-7, Jason Swails wrote:
> From there, you can implement a method interface in which the child Cmd
> subclasses can call to indicate to BossCmd that do_exit has been called and
> it should quit after the child's cmdloop returns. So something like this:
>
>
Hey, yeah. My previous responses didn't show up, or are delayed, or something.
Thank you, yes. This advice helped and rooting around the source code I
realized that the Cmd.cmdqueue attribute is the easy way out:
import cmd
class BossCmd(cmd.Cmd):
def __init__(self):
cmd.Cmd.__init__(self)
self.prompt = 'Boss>'
self.exit_called_from_minion = False
self.minions = {}
def add_minion(self, name, cmder):
self.minions[name] = cmder
def do_exit(self, line):
return True
def postloop(self):
print "I mean it. I'm done"
def postcmd(self, stop, line):
# check if minion called for exit
if self.exit_called_from_minion:
stop = True
return stop
def do_submission(self, line):
if line:
self.minions['submission'].onecmd(line)
else:
self.minions['submission'].cmdloop()
def do_story(self, line):
if line:
self.minions['story'].onecmd(line)
else:
self.minions['story'].cmdloop()
class SubmissionCmd(cmd.Cmd):
def __init__(self, master = None):
cmd.Cmd.__init__(self)
self.prompt = 'Submission>'
self.master = master
if self.master:
self.master.add_minion('submission', self)
def do_done(self, line):
return True
def do_exit(self, line):
self.master.exit_called_from_minion = True
return True
def do_story(self, line):
if line:
self.master.minions['story'].onecmd(line)
else:
self.master.cmdqueue.append('story {}'.format(line))
return True
class StoryCmd(cmd.Cmd):
def __init__(self, master=None):
cmd.Cmd.__init__(self)
self.prompt = 'Story>'
self.master=master
if self.master:
self.master.add_minion('story', self)
def do_done(self, line):
return True
def do_exit(self, line):
elf.master.exit_called_from_minion = True
return True
def do_submission(self, line):
if line:
self.master.minions['submission'].onecmd(line)
else:
self.master.cmdqueue.append('submission {}'.format(line))
return True
Boss = BossCmd()
Sub = SubmissionCmd(Boss)
Story = StoryCmd(Boss)
Boss.cmdloop()
----
This gives me a flexible framework to bounce between Cmd instances at will, and
quit the program from anywhere.
Josh
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