
# Copyright (c) 2002-2007 Sebastian Stark
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR SEBASTIAN STARK
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR
# OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


"""Interactive mode for tentakel
"""

import remote
import cmd
try:
	import readline
except:
	pass

class tentakelShell(cmd.Cmd):

	def __init__(self, conf, groupName):
		cmd.Cmd.__init__(self)
		self.doc_header = "commands (type help <topic>):"
		self.ruler = ""
		self.groupName = groupName
		self.prompt = "tentakel(%s)> " % groupName
		self.conf = conf
		self.dests = remote.RemoteCollator(conf, groupName)

	def emptyline(self): pass

	def postcmd(self, stop, rest):
		self.prompt = "tentakel(%s)> " % self.groupName
		return stop

	def do_exec(self, execString):
		"exec <cmd>: applies <cmd> to the current group"
		
		if not execString:
			print "empty command"
			return
		self.dests.execAll(execString)
		self.dests.displayAll()

	def do_conf(self, rest):
		"conf: interactively edit current configuration"
		
		self.conf.edit()
		self.dests.useConf(self.conf, self.groupName, stdin='')
	
	def do_use(self, rest):
		"use <groupname>: use the specified group"

		if rest:
			self.groupName = rest
			self.dests.useConf(self.conf, self.groupName, stdin='')

	def do_listgroups(self, rest):
		"listgroups: list available groups"

		print "\n".join(self.conf.getGroups())

	def do_hosts(self, rest):
		"hosts: show list of affected hosts"
		
		print "\n".join(self.dests.getDestinations())

	def do_quit(self, rest):
		"quit or ctrl-d: quit program"
		
		return 1

	def default(self, rest):
		if rest == "EOF":
			print
			return 1
		else:
			print "unknown command"

	def help_help(self): print "help <something>: show usage of <something>"
