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#!/usr/bin/env python

import code

import sys

SOURCE_FILE = "blogapp%d.py" % sys.version_info.major

class ReadLineConsole(code.InteractiveConsole):

BACK_CHAR = 'Z'

def __init__(self, locals=None, filename="<console>", histfile=None):

code.InteractiveConsole.__init__(self, locals, filename)

self.queue = open(SOURCE_FILE).readlines()

self.queue_pos = 0

self.back_search = None

try:

import readline

except ImportError:

pass

else:

try:

import rlcompleter

self.completer = rlcompleter.Completer(locals)

readline.set_completer(self.complete)

except ImportError:

pass

if 'libedit' in readline.__doc__:

readline.parse_and_bind("bind ^I rl_complete")

else:

readline.parse_and_bind("tab: complete")

def complete(self, text, state):

# print (text, self.queue_pos, self.back_search, state)

if text == '':

if state == 0:

if self.back_search is not None:

self.queue_pos -= self.back_search + 1

self.back_search = None

if self.queue_pos >= len(self.queue):

return "# That's all, folks!"

line = self.queue[self.queue_pos]

self.queue_pos += 1

return line.rstrip("\n")

return None

elif text == self.BACK_CHAR:

if state == 0:

self.back_search = 1 if self.back_search is None else self.back_search + 1

back_pos = self.queue_pos - self.back_search

back_line = self.queue[back_pos if back_pos >= 0 else 0]

return self.BACK_CHAR + "0" + back_line.rstrip("\n")

elif state == 1:

back_pos = self.queue_pos - self.back_search - 1

back_line = self.queue[back_pos if back_pos >= 0 else 0]

return self.BACK_CHAR + "1" + back_line.rstrip("\n")

return None

self.back_search = None

return self.completer.complete(text, state)

ldict = locals().copy()

ldict.pop("ReadLineConsole")

ldict.pop("code")

local_var_names = " ".join(sorted([var for var in ldict.keys() if not var.startswith("__")]))

console = ReadLineConsole(ldict)

banner = ("Python %s on %s\n(%s)" %

(sys.version, sys.platform, local_var_names))

console.interact(banner=banner)