# -*- coding: utf-8 -*-
#
# This file is part of NINJA-IDE (http://ninja-ide.org).
#
# NINJA-IDE 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; either version 3 of the License, or
# any later version.
#
# NINJA-IDE 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 NINJA-IDE; If not, see <http://www.gnu.org/licenses/>.
from __future__ import absolute_import
import sys
from code import InteractiveConsole
class Cache(object):
"""Replace stdout and stderr behavior in order to collect outputs."""
def __init__(self):
self.reset()
def reset(self):
"""Clean the cache."""
self.out = []
def write(self, line):
"""Collect the output into cache to be accesed later."""
self.out.append(line)
def flush(self):
"""Join together all the outputs and return it to be displayed."""
if len(self.out) > 1:
output = ''.join(self.out)[:-1]
self.reset()
return output
class ExitWrapper(object):
"""Wrap the built-in function exit in the interpreter."""
def __call__(self, code=None):
return None
def __repr__(self):
return exit.__repr__()
class HelpWrapper(object):
"""Wrap the built-in function help in the interpreter."""
def __call__(self, *args, **kwds):
if args or kwds:
return help(*args, **kwds)
def __repr__(self):
return help.__repr__()
class Console(InteractiveConsole):
"""Work as a Python Console."""
def __init__(self):
InteractiveConsole.__init__(self,
locals={'exit': ExitWrapper(), 'help': HelpWrapper()})
self.stdout = sys.stdout
self.stderr = sys.stderr
self._cache = Cache()
self.output = ''
def get_output(self):
"""Replace out and error channels with cache."""
sys.stdout = self._cache
sys.stderr = self._cache
def return_output(self):
"""Reassign the proper values to output and error channel."""
sys.stdout = self.stdout
sys.stderr = self.stderr
def push(self, line):
"""Insert a command into the console."""
self.get_output()
val = InteractiveConsole.push(self, line)
self.return_output()
self.output = self._cache.flush()
return val
def get_type(self, var):
"""Get the type of a variable."""
type_line = "'.'.join([type(%s).__module__, type(%s).__name__])" % \
(var[:-1], var[:-1])
self.get_output()
InteractiveConsole.push(self, type_line)
self.return_output()
exec_line = self._cache.flush() + '.'
exec_line = exec_line.replace("'", "")
return exec_line