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shell.py
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243 lines (189 loc) · 6.79 KB
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# -*- coding: utf-8 -*-
"""Utility and helper methods for tmuxp.
tmuxp.shell
~~~~~~~~~~~
"""
from __future__ import absolute_import, unicode_literals
import logging
import os
logger = logging.getLogger(__name__)
def has_ipython():
try:
from IPython import start_ipython # NOQA F841
except ImportError:
try:
from IPython.Shell import IPShell # NOQA F841
except ImportError:
return False
return True
def has_ptpython():
try:
from ptpython.repl import embed, run_config # NOQA F841
except ImportError:
try:
from prompt_toolkit.contrib.repl import embed, run_config # NOQA F841
except ImportError:
return False
return True
def has_ptipython():
try:
from ptpython.ipython import embed # NOQA F841
from ptpython.repl import run_config # NOQA F841
except ImportError:
try:
from prompt_toolkit.contrib.ipython import embed # NOQA F841
from prompt_toolkit.contrib.repl import run_config # NOQA F841
except ImportError:
return False
return True
def has_bpython():
try:
from bpython import embed # NOQA F841
except ImportError:
return False
return True
def detect_best_shell():
if has_ptipython():
return 'ptipython'
elif has_ptpython():
return 'ptpython'
elif has_ipython():
return 'ipython'
elif has_bpython():
return 'bpython'
return 'code'
def get_bpython(options, extra_args=None):
if extra_args is None:
extra_args = {}
from bpython import embed # NOQA F841
def launch_bpython():
imported_objects = get_launch_args(**options)
kwargs = {}
if extra_args:
kwargs['args'] = extra_args
embed(imported_objects, **kwargs)
return launch_bpython
def get_ipython_arguments():
ipython_args = 'IPYTHON_ARGUMENTS'
return os.environ.get(ipython_args, '').split()
def get_ipython(options, **extra_args):
try:
from IPython import start_ipython
def launch_ipython():
imported_objects = get_launch_args(**options)
ipython_arguments = extra_args or get_ipython_arguments()
start_ipython(argv=ipython_arguments, user_ns=imported_objects)
return launch_ipython
except ImportError:
# IPython < 0.11
# Explicitly pass an empty list as arguments, because otherwise
# IPython would use sys.argv from this script.
# Notebook not supported for IPython < 0.11.
from IPython.Shell import IPShell
def launch_ipython():
imported_objects = get_launch_args(**options)
shell = IPShell(argv=[], user_ns=imported_objects)
shell.mainloop()
return launch_ipython
def get_ptpython(options, vi_mode=False):
try:
from ptpython.repl import embed, run_config
except ImportError:
from prompt_toolkit.contrib.repl import embed, run_config
def launch_ptpython():
imported_objects = get_launch_args(**options)
history_filename = os.path.expanduser('~/.ptpython_history')
embed(
globals=imported_objects,
history_filename=history_filename,
vi_mode=vi_mode,
configure=run_config,
)
return launch_ptpython
def get_ptipython(options, vi_mode=False):
"""Based on django-extensions
Run renamed to launch, get_imported_objects renamed to get_launch_args
"""
try:
from ptpython.ipython import embed
from ptpython.repl import run_config
except ImportError:
# prompt_toolkit < v0.27
from prompt_toolkit.contrib.ipython import embed
from prompt_toolkit.contrib.repl import run_config
def launch_ptipython():
imported_objects = get_launch_args(**options)
history_filename = os.path.expanduser('~/.ptpython_history')
embed(
user_ns=imported_objects,
history_filename=history_filename,
vi_mode=vi_mode,
configure=run_config,
)
return launch_ptipython
def get_launch_args(**kwargs):
import libtmux
return {
'libtmux': libtmux,
'Server': libtmux.Server,
'Session': libtmux.Session,
'Window': libtmux.Window,
'Pane': libtmux.Pane,
'server': kwargs.get('server'),
'session': kwargs.get('session'),
'window': kwargs.get('window'),
'pane': kwargs.get('pane'),
}
def get_code(use_pythonrc, imported_objects):
import code
try:
# Try activating rlcompleter, because it's handy.
import readline
except ImportError:
pass
else:
# We don't have to wrap the following import in a 'try', because
# we already know 'readline' was imported successfully.
import rlcompleter
readline.set_completer(rlcompleter.Completer(imported_objects).complete)
# Enable tab completion on systems using libedit (e.g. macOS).
# These lines are copied from Lib/site.py on Python 3.4.
readline_doc = getattr(readline, '__doc__', '')
if readline_doc is not None and 'libedit' in readline_doc:
readline.parse_and_bind("bind ^I rl_complete")
else:
readline.parse_and_bind("tab:complete")
# We want to honor both $PYTHONSTARTUP and .pythonrc.py, so follow system
# conventions and get $PYTHONSTARTUP first then .pythonrc.py.
if use_pythonrc:
for pythonrc in set(
[os.environ.get("PYTHONSTARTUP"), os.path.expanduser('~/.pythonrc.py')]
):
if not pythonrc:
continue
if not os.path.isfile(pythonrc):
continue
with open(pythonrc) as handle:
pythonrc_code = handle.read()
# Match the behavior of the cpython shell where an error in
# PYTHONSTARTUP prints an exception and continues.
exec(compile(pythonrc_code, pythonrc, 'exec'), imported_objects)
def launch_code():
code.interact(local=imported_objects)
return launch_code
def launch(shell='best', use_pythonrc=False, use_vi_mode=False, **kwargs):
# Also allowing passing shell='code' to force using code.interact
imported_objects = get_launch_args(**kwargs)
if shell == 'best':
shell = detect_best_shell()
if shell == 'ptipython':
launch = get_ptipython(options=kwargs, vi_mode=use_vi_mode)
elif shell == 'ptpython':
launch = get_ptpython(options=kwargs, vi_mode=use_vi_mode)
elif shell == 'ipython':
launch = get_ipython(options=kwargs)
elif shell == 'bpython':
launch = get_bpython(options=kwargs)
else:
launch = get_code(use_pythonrc=use_pythonrc, imported_objects=imported_objects)
launch()