|
|
#!/usr/bin/python
|
|
|
# -*- coding: iso-8859-15 -*-
|
|
|
'''
|
|
|
Provides IPython remote instance.
|
|
|
|
|
|
@author: Laurent Dufrechou
|
|
|
laurent.dufrechou _at_ gmail.com
|
|
|
@license: BSD
|
|
|
|
|
|
All rights reserved. This program and the accompanying materials are made
|
|
|
available under the terms of the BSD which accompanies this distribution, and
|
|
|
is available at U{http://www.opensource.org/licenses/bsd-license.php}
|
|
|
'''
|
|
|
|
|
|
__version__ = 0.9
|
|
|
__author__ = "Laurent Dufrechou"
|
|
|
__email__ = "laurent.dufrechou _at_ gmail.com"
|
|
|
__license__ = "BSD"
|
|
|
|
|
|
import re
|
|
|
import sys
|
|
|
import os
|
|
|
import locale
|
|
|
from thread_ex import ThreadEx
|
|
|
|
|
|
from IPython.core import iplib
|
|
|
from IPython.utils.io import Term
|
|
|
|
|
|
##############################################################################
|
|
|
class _Helper(object):
|
|
|
"""Redefine the built-in 'help'.
|
|
|
This is a wrapper around pydoc.help (with a twist).
|
|
|
"""
|
|
|
|
|
|
def __init__(self, pager):
|
|
|
self._pager = pager
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "Type help() for interactive help, " \
|
|
|
"or help(object) for help about object."
|
|
|
|
|
|
def __call__(self, *args, **kwds):
|
|
|
class DummyWriter(object):
|
|
|
'''Dumy class to handle help output'''
|
|
|
def __init__(self, pager):
|
|
|
self._pager = pager
|
|
|
|
|
|
def write(self, data):
|
|
|
'''hook to fill self._pager'''
|
|
|
self._pager(data)
|
|
|
|
|
|
import pydoc
|
|
|
pydoc.help.output = DummyWriter(self._pager)
|
|
|
pydoc.help.interact = lambda :1
|
|
|
|
|
|
return pydoc.help(*args, **kwds)
|
|
|
|
|
|
|
|
|
##############################################################################
|
|
|
class _CodeExecutor(ThreadEx):
|
|
|
''' Thread that execute ipython code '''
|
|
|
def __init__(self, instance):
|
|
|
ThreadEx.__init__(self)
|
|
|
self.instance = instance
|
|
|
|
|
|
def run(self):
|
|
|
'''Thread main loop'''
|
|
|
try:
|
|
|
self.instance._doc_text = None
|
|
|
self.instance._help_text = None
|
|
|
self.instance._execute()
|
|
|
# used for uper class to generate event after execution
|
|
|
self.instance._after_execute()
|
|
|
|
|
|
except KeyboardInterrupt:
|
|
|
pass
|
|
|
|
|
|
|
|
|
##############################################################################
|
|
|
class NonBlockingIPShell(object):
|
|
|
'''
|
|
|
Create an IPython instance, running the commands in a separate,
|
|
|
non-blocking thread.
|
|
|
This allows embedding in any GUI without blockage.
|
|
|
|
|
|
Note: The ThreadEx class supports asynchroneous function call
|
|
|
via raise_exc()
|
|
|
'''
|
|
|
|
|
|
def __init__(self, user_ns={}, user_global_ns=None,
|
|
|
cin=None, cout=None, cerr=None,
|
|
|
ask_exit_handler=None):
|
|
|
'''
|
|
|
@param user_ns: User namespace.
|
|
|
@type user_ns: dictionary
|
|
|
@param user_global_ns: User global namespace.
|
|
|
@type user_global_ns: dictionary.
|
|
|
@param cin: Console standard input.
|
|
|
@type cin: IO stream
|
|
|
@param cout: Console standard output.
|
|
|
@type cout: IO stream
|
|
|
@param cerr: Console standard error.
|
|
|
@type cerr: IO stream
|
|
|
@param exit_handler: Replacement for builtin exit() function
|
|
|
@type exit_handler: function
|
|
|
@param time_loop: Define the sleep time between two thread's loop
|
|
|
@type int
|
|
|
'''
|
|
|
#ipython0 initialisation
|
|
|
self._IP = None
|
|
|
self.init_ipython0(user_ns, user_global_ns,
|
|
|
cin, cout, cerr,
|
|
|
ask_exit_handler)
|
|
|
|
|
|
#vars used by _execute
|
|
|
self._iter_more = 0
|
|
|
self._history_level = 0
|
|
|
self._complete_sep = re.compile('[\s\{\}\[\]\(\)\=]')
|
|
|
self._prompt = str(self._IP.outputcache.prompt1).strip()
|
|
|
|
|
|
#thread working vars
|
|
|
self._line_to_execute = ''
|
|
|
self._threading = True
|
|
|
|
|
|
#vars that will be checked by GUI loop to handle thread states...
|
|
|
#will be replaced later by PostEvent GUI funtions...
|
|
|
self._doc_text = None
|
|
|
self._help_text = None
|
|
|
self._add_button = None
|
|
|
|
|
|
def init_ipython0(self, user_ns={}, user_global_ns=None,
|
|
|
cin=None, cout=None, cerr=None,
|
|
|
ask_exit_handler=None):
|
|
|
''' Initialize an ipython0 instance '''
|
|
|
|
|
|
#first we redefine in/out/error functions of IPython
|
|
|
#BUG: we've got a limitation form ipython0 there
|
|
|
#only one instance can be instanciated else tehre will be
|
|
|
#cin/cout/cerr clash...
|
|
|
if cin:
|
|
|
Term.cin = cin
|
|
|
if cout:
|
|
|
Term.cout = cout
|
|
|
if cerr:
|
|
|
Term.cerr = cerr
|
|
|
|
|
|
excepthook = sys.excepthook
|
|
|
|
|
|
#Hack to save sys.displayhook, because ipython seems to overwrite it...
|
|
|
self.sys_displayhook_ori = sys.displayhook
|
|
|
ipython0 = iplib.InteractiveShell(
|
|
|
parent=None, config=None,
|
|
|
user_ns=user_ns,
|
|
|
user_global_ns=user_global_ns
|
|
|
)
|
|
|
self._IP = ipython0
|
|
|
|
|
|
#we save ipython0 displayhook and we restore sys.displayhook
|
|
|
self.displayhook = sys.displayhook
|
|
|
sys.displayhook = self.sys_displayhook_ori
|
|
|
|
|
|
#we replace IPython default encoding by wx locale encoding
|
|
|
loc = locale.getpreferredencoding()
|
|
|
if loc:
|
|
|
self._IP.stdin_encoding = loc
|
|
|
#we replace the ipython default pager by our pager
|
|
|
self._IP.set_hook('show_in_pager', self._pager)
|
|
|
|
|
|
#we replace the ipython default shell command caller
|
|
|
#by our shell handler
|
|
|
self._IP.set_hook('shell_hook', self._shell)
|
|
|
|
|
|
#we replace the ipython default input command caller by our method
|
|
|
iplib.raw_input_original = self._raw_input_original
|
|
|
#we replace the ipython default exit command by our method
|
|
|
self._IP.exit = ask_exit_handler
|
|
|
#we replace the help command
|
|
|
self._IP.user_ns['help'] = _Helper(self._pager_help)
|
|
|
|
|
|
#we disable cpaste magic... until we found a way to use it properly.
|
|
|
def bypass_magic(self, arg):
|
|
|
print '%this magic is currently disabled.'
|
|
|
ipython0.define_magic('cpaste', bypass_magic)
|
|
|
|
|
|
import __builtin__
|
|
|
__builtin__.raw_input = self._raw_input
|
|
|
|
|
|
sys.excepthook = excepthook
|
|
|
|
|
|
#----------------------- Thread management section ----------------------
|
|
|
def do_execute(self, line):
|
|
|
"""
|
|
|
Tell the thread to process the 'line' command
|
|
|
"""
|
|
|
|
|
|
self._line_to_execute = line
|
|
|
|
|
|
if self._threading:
|
|
|
#we launch the ipython line execution in a thread to make it
|
|
|
#interruptible with include it in self namespace to be able
|
|
|
#to call ce.raise_exc(KeyboardInterrupt)
|
|
|
self.ce = _CodeExecutor(self)
|
|
|
self.ce.start()
|
|
|
else:
|
|
|
try:
|
|
|
self._doc_text = None
|
|
|
self._help_text = None
|
|
|
self._execute()
|
|
|
# used for uper class to generate event after execution
|
|
|
self._after_execute()
|
|
|
|
|
|
except KeyboardInterrupt:
|
|
|
pass
|
|
|
|
|
|
#----------------------- IPython management section ----------------------
|
|
|
def get_threading(self):
|
|
|
"""
|
|
|
Returns threading status, is set to True, then each command sent to
|
|
|
the interpreter will be executed in a separated thread allowing,
|
|
|
for example, breaking a long running commands.
|
|
|
Disallowing it, permits better compatibilty with instance that is embedding
|
|
|
IPython instance.
|
|
|
|
|
|
@return: Execution method
|
|
|
@rtype: bool
|
|
|
"""
|
|
|
return self._threading
|
|
|
|
|
|
def set_threading(self, state):
|
|
|
"""
|
|
|
Sets threading state, if set to True, then each command sent to
|
|
|
the interpreter will be executed in a separated thread allowing,
|
|
|
for example, breaking a long running commands.
|
|
|
Disallowing it, permits better compatibilty with instance that is embedding
|
|
|
IPython instance.
|
|
|
|
|
|
@param state: Sets threading state
|
|
|
@type bool
|
|
|
"""
|
|
|
self._threading = state
|
|
|
|
|
|
def get_doc_text(self):
|
|
|
"""
|
|
|
Returns the output of the processing that need to be paged (if any)
|
|
|
|
|
|
@return: The std output string.
|
|
|
@rtype: string
|
|
|
"""
|
|
|
return self._doc_text
|
|
|
|
|
|
def get_help_text(self):
|
|
|
"""
|
|
|
Returns the output of the processing that need to be paged via help pager(if any)
|
|
|
|
|
|
@return: The std output string.
|
|
|
@rtype: string
|
|
|
"""
|
|
|
return self._help_text
|
|
|
|
|
|
def get_banner(self):
|
|
|
"""
|
|
|
Returns the IPython banner for useful info on IPython instance
|
|
|
|
|
|
@return: The banner string.
|
|
|
@rtype: string
|
|
|
"""
|
|
|
return self._IP.banner
|
|
|
|
|
|
def get_prompt_count(self):
|
|
|
"""
|
|
|
Returns the prompt number.
|
|
|
Each time a user execute a line in the IPython shell the prompt count is increased
|
|
|
|
|
|
@return: The prompt number
|
|
|
@rtype: int
|
|
|
"""
|
|
|
return self._IP.outputcache.prompt_count
|
|
|
|
|
|
def get_prompt(self):
|
|
|
"""
|
|
|
Returns current prompt inside IPython instance
|
|
|
(Can be In [...]: ot ...:)
|
|
|
|
|
|
@return: The current prompt.
|
|
|
@rtype: string
|
|
|
"""
|
|
|
return self._prompt
|
|
|
|
|
|
def get_indentation(self):
|
|
|
"""
|
|
|
Returns the current indentation level
|
|
|
Usefull to put the caret at the good start position if we want to do autoindentation.
|
|
|
|
|
|
@return: The indentation level.
|
|
|
@rtype: int
|
|
|
"""
|
|
|
return self._IP.indent_current_nsp
|
|
|
|
|
|
def update_namespace(self, ns_dict):
|
|
|
'''
|
|
|
Add the current dictionary to the shell namespace.
|
|
|
|
|
|
@param ns_dict: A dictionary of symbol-values.
|
|
|
@type ns_dict: dictionary
|
|
|
'''
|
|
|
self._IP.user_ns.update(ns_dict)
|
|
|
|
|
|
def complete(self, line):
|
|
|
'''
|
|
|
Returns an auto completed line and/or posibilities for completion.
|
|
|
|
|
|
@param line: Given line so far.
|
|
|
@type line: string
|
|
|
|
|
|
@return: Line completed as for as possible,
|
|
|
and possible further completions.
|
|
|
@rtype: tuple
|
|
|
'''
|
|
|
split_line = self._complete_sep.split(line)
|
|
|
possibilities = self._IP.complete(split_line[-1])
|
|
|
if possibilities:
|
|
|
|
|
|
def _common_prefix(str1, str2):
|
|
|
'''
|
|
|
Reduction function. returns common prefix of two given strings.
|
|
|
|
|
|
@param str1: First string.
|
|
|
@type str1: string
|
|
|
@param str2: Second string
|
|
|
@type str2: string
|
|
|
|
|
|
@return: Common prefix to both strings.
|
|
|
@rtype: string
|
|
|
'''
|
|
|
for i in range(len(str1)):
|
|
|
if not str2.startswith(str1[:i+1]):
|
|
|
return str1[:i]
|
|
|
return str1
|
|
|
common_prefix = reduce(_common_prefix, possibilities)
|
|
|
completed = line[:-len(split_line[-1])]+common_prefix
|
|
|
else:
|
|
|
completed = line
|
|
|
return completed, possibilities
|
|
|
|
|
|
def history_back(self):
|
|
|
'''
|
|
|
Provides one history command back.
|
|
|
|
|
|
@return: The command string.
|
|
|
@rtype: string
|
|
|
'''
|
|
|
history = ''
|
|
|
#the below while loop is used to suppress empty history lines
|
|
|
while((history == '' or history == '\n') and self._history_level >0):
|
|
|
if self._history_level >= 1:
|
|
|
self._history_level -= 1
|
|
|
history = self._get_history()
|
|
|
return history
|
|
|
|
|
|
def history_forward(self):
|
|
|
'''
|
|
|
Provides one history command forward.
|
|
|
|
|
|
@return: The command string.
|
|
|
@rtype: string
|
|
|
'''
|
|
|
history = ''
|
|
|
#the below while loop is used to suppress empty history lines
|
|
|
while((history == '' or history == '\n') \
|
|
|
and self._history_level <= self._get_history_max_index()):
|
|
|
if self._history_level < self._get_history_max_index():
|
|
|
self._history_level += 1
|
|
|
history = self._get_history()
|
|
|
else:
|
|
|
if self._history_level == self._get_history_max_index():
|
|
|
history = self._get_history()
|
|
|
self._history_level += 1
|
|
|
else:
|
|
|
history = ''
|
|
|
return history
|
|
|
|
|
|
def init_history_index(self):
|
|
|
'''
|
|
|
set history to last command entered
|
|
|
'''
|
|
|
self._history_level = self._get_history_max_index()+1
|
|
|
|
|
|
#----------------------- IPython PRIVATE management section --------------
|
|
|
def _after_execute(self):
|
|
|
'''
|
|
|
Can be redefined to generate post event after excution is done
|
|
|
'''
|
|
|
pass
|
|
|
|
|
|
def _ask_exit(self):
|
|
|
'''
|
|
|
Can be redefined to generate post event to exit the Ipython shell
|
|
|
'''
|
|
|
pass
|
|
|
|
|
|
def _get_history_max_index(self):
|
|
|
'''
|
|
|
returns the max length of the history buffer
|
|
|
|
|
|
@return: history length
|
|
|
@rtype: int
|
|
|
'''
|
|
|
return len(self._IP.input_hist_raw)-1
|
|
|
|
|
|
def _get_history(self):
|
|
|
'''
|
|
|
Get's the command string of the current history level.
|
|
|
|
|
|
@return: Historic command stri
|
|
|
@rtype: string
|
|
|
'''
|
|
|
rv = self._IP.input_hist_raw[self._history_level].strip('\n')
|
|
|
return rv
|
|
|
|
|
|
def _pager_help(self, text):
|
|
|
'''
|
|
|
This function is used as a callback replacment to IPython help pager function
|
|
|
|
|
|
It puts the 'text' value inside the self._help_text string that can be retrived via
|
|
|
get_help_text function.
|
|
|
'''
|
|
|
if self._help_text == None:
|
|
|
self._help_text = text
|
|
|
else:
|
|
|
self._help_text += text
|
|
|
|
|
|
def _pager(self, IP, text):
|
|
|
'''
|
|
|
This function is used as a callback replacment to IPython pager function
|
|
|
|
|
|
It puts the 'text' value inside the self._doc_text string that can be retrived via
|
|
|
get_doc_text function.
|
|
|
'''
|
|
|
self._doc_text = text
|
|
|
|
|
|
def _raw_input_original(self, prompt=''):
|
|
|
'''
|
|
|
Custom raw_input() replacement. Get's current line from console buffer.
|
|
|
|
|
|
@param prompt: Prompt to print. Here for compatability as replacement.
|
|
|
@type prompt: string
|
|
|
|
|
|
@return: The current command line text.
|
|
|
@rtype: string
|
|
|
'''
|
|
|
return self._line_to_execute
|
|
|
|
|
|
def _raw_input(self, prompt=''):
|
|
|
""" A replacement from python's raw_input.
|
|
|
"""
|
|
|
raise NotImplementedError
|
|
|
|
|
|
def _execute(self):
|
|
|
'''
|
|
|
Executes the current line provided by the shell object.
|
|
|
'''
|
|
|
|
|
|
orig_stdout = sys.stdout
|
|
|
sys.stdout = Term.cout
|
|
|
#self.sys_displayhook_ori = sys.displayhook
|
|
|
#sys.displayhook = self.displayhook
|
|
|
|
|
|
try:
|
|
|
line = self._IP.raw_input(None, self._iter_more)
|
|
|
if self._IP.autoindent:
|
|
|
self._IP.readline_startup_hook(None)
|
|
|
|
|
|
except KeyboardInterrupt:
|
|
|
self._IP.write('\nKeyboardInterrupt\n')
|
|
|
self._IP.resetbuffer()
|
|
|
# keep cache in sync with the prompt counter:
|
|
|
self._IP.outputcache.prompt_count -= 1
|
|
|
|
|
|
if self._IP.autoindent:
|
|
|
self._IP.indent_current_nsp = 0
|
|
|
self._iter_more = 0
|
|
|
except:
|
|
|
self._IP.showtraceback()
|
|
|
else:
|
|
|
self._IP.write(str(self._IP.outputcache.prompt_out).strip())
|
|
|
self._iter_more = self._IP.push_line(line)
|
|
|
if (self._IP.SyntaxTB.last_syntax_error and \
|
|
|
self._IP.autoedit_syntax):
|
|
|
self._IP.edit_syntax_error()
|
|
|
if self._iter_more:
|
|
|
self._prompt = str(self._IP.outputcache.prompt2).strip()
|
|
|
if self._IP.autoindent:
|
|
|
self._IP.readline_startup_hook(self._IP.pre_readline)
|
|
|
else:
|
|
|
self._prompt = str(self._IP.outputcache.prompt1).strip()
|
|
|
self._IP.indent_current_nsp = 0 #we set indentation to 0
|
|
|
|
|
|
sys.stdout = orig_stdout
|
|
|
#sys.displayhook = self.sys_displayhook_ori
|
|
|
|
|
|
def _shell(self, ip, cmd):
|
|
|
'''
|
|
|
Replacement method to allow shell commands without them blocking.
|
|
|
|
|
|
@param ip: Ipython instance, same as self._IP
|
|
|
@type cmd: Ipython instance
|
|
|
@param cmd: Shell command to execute.
|
|
|
@type cmd: string
|
|
|
'''
|
|
|
stdin, stdout = os.popen4(cmd)
|
|
|
result = stdout.read().decode('cp437').\
|
|
|
encode(locale.getpreferredencoding())
|
|
|
#we use print command because the shell command is called
|
|
|
#inside IPython instance and thus is redirected to thread cout
|
|
|
#"\x01\x1b[1;36m\x02" <-- add colour to the text...
|
|
|
print "\x01\x1b[1;36m\x02"+result
|
|
|
stdout.close()
|
|
|
stdin.close()
|
|
|
|
