def __init__(self, *args, **kwargs):
# If the lexor is loaded as a pygment plugin, we have to mock
# __xonsh_env__ and __xonsh_commands_cache__
if not hasattr(builtins, '__xonsh_env__'):
setattr(builtins, '__xonsh_env__', {})
if ON_WINDOWS:
pathext = os_environ.get('PATHEXT', ['.EXE', '.BAT', '.CMD'])
builtins.__xonsh_env__['PATHEXT'] = pathext.split(os.pathsep)
if not hasattr(builtins, '__xonsh_commands_cache__'):
setattr(builtins, '__xonsh_commands_cache__', CommandsCache())
_ = builtins.__xonsh_commands_cache__.all_commands # NOQA
super().__init__(*args, **kwargs)
def __init__(self, *args, **kwargs):
# If the lexor is loaded as a pygment plugin, we have to mock
# __xonsh_env__ and __xonsh_commands_cache__
if not hasattr(builtins, '__xonsh_env__'):
setattr(builtins, '__xonsh_env__', {})
if ON_WINDOWS:
pathext = os_environ.get('PATHEXT', ['.EXE', '.BAT', '.CMD'])
builtins.__xonsh_env__['PATHEXT'] = pathext.split(os.pathsep)
if not hasattr(builtins, '__xonsh_commands_cache__'):
setattr(builtins, '__xonsh_commands_cache__', CommandsCache())
_ = builtins.__xonsh_commands_cache__.all_commands # NOQA
super().__init__(*args, **kwargs)
def __init__(self, *args, **kwargs):
# If the lexor is loaded as a pygment plugin, we have to mock
# __xonsh_env__ and __xonsh_commands_cache__
if not hasattr(builtins, "__xonsh_env__"):
setattr(builtins, "__xonsh_env__", {})
if ON_WINDOWS:
pathext = os_environ.get("PATHEXT", [".EXE", ".BAT", ".CMD"])
builtins.__xonsh_env__["PATHEXT"] = pathext.split(os.pathsep)
if not hasattr(builtins, "__xonsh_commands_cache__"):
setattr(builtins, "__xonsh_commands_cache__", CommandsCache())
_ = builtins.__xonsh_commands_cache__.all_commands # NOQA
super().__init__(*args, **kwargs)
def __init__(self, *args, **kwargs):
# If the lexer is loaded as a pygment plugin, we have to mock
# __xonsh__.env and __xonsh__.commands_cache
if not hasattr(builtins, "__xonsh__"):
from argparse import Namespace
setattr(builtins, "__xonsh__", Namespace())
if not hasattr(builtins.__xonsh__, "env"):
setattr(builtins.__xonsh__, "env", {})
if ON_WINDOWS:
pathext = os_environ.get("PATHEXT", [".EXE", ".BAT", ".CMD"])
builtins.__xonsh__.env["PATHEXT"] = pathext.split(os.pathsep)
if not hasattr(builtins.__xonsh__, "commands_cache"):
setattr(builtins.__xonsh__, "commands_cache", CommandsCache())
_ = builtins.__xonsh__.commands_cache.all_commands # NOQA
super().__init__(*args, **kwargs)
def __init__(self, *args, **kwargs):
# If the lexer is loaded as a pygment plugin, we have to mock
# __xonsh__.env and __xonsh__.commands_cache
if not hasattr(builtins, "__xonsh__"):
from argparse import Namespace
setattr(builtins, "__xonsh__", Namespace())
if not hasattr(builtins.__xonsh__, "env"):
setattr(builtins.__xonsh__, "env", {})
if ON_WINDOWS:
pathext = os_environ.get("PATHEXT", [".EXE", ".BAT", ".CMD"])
builtins.__xonsh__.env["PATHEXT"] = pathext.split(os.pathsep)
if not hasattr(builtins.__xonsh__, "commands_cache"):
setattr(builtins.__xonsh__, "commands_cache", CommandsCache())
_ = builtins.__xonsh__.commands_cache.all_commands # NOQA
super().__init__(*args, **kwargs)
def setup_readline():
"""Sets up the readline module and completion suppression, if available."""
global RL_COMPLETION_SUPPRESS_APPEND, RL_LIB, RL_CAN_RESIZE, RL_STATE, readline, RL_COMPLETION_QUERY_ITEMS
if RL_COMPLETION_SUPPRESS_APPEND is not None:
return
for _rlmod_name in ("gnureadline", "readline"):
try:
readline = importlib.import_module(_rlmod_name)
sys.modules["readline"] = readline
except ImportError:
pass
else:
break
if readline is None:
print(
"""Skipping setup. Because no `readline` implementation available.
Please install a backend (`readline`, `prompt-toolkit`, etc) to use
`xonsh` interactively.
See https://github.com/xonsh/xonsh/issues/1170""")
return
import ctypes
import ctypes.util
uses_libedit = readline.__doc__ and "libedit" in readline.__doc__
readline.set_completer_delims(" \t\n")
# Cygwin seems to hang indefinitely when querying the readline lib
if (not ON_CYGWIN) and (not ON_MSYS) and (
not readline.__file__.endswith(".py")):
RL_LIB = lib = ctypes.cdll.LoadLibrary(readline.__file__)
try:
RL_COMPLETION_SUPPRESS_APPEND = ctypes.c_int.in_dll(
lib, "rl_completion_suppress_append")
except ValueError:
# not all versions of readline have this symbol, ie Macs sometimes
RL_COMPLETION_SUPPRESS_APPEND = None
try:
RL_COMPLETION_QUERY_ITEMS = ctypes.c_int.in_dll(
lib, "rl_completion_query_items")
except ValueError:
# not all versions of readline have this symbol, ie Macs sometimes
RL_COMPLETION_QUERY_ITEMS = None
try:
RL_STATE = ctypes.c_int.in_dll(lib, "rl_readline_state")
except Exception:
pass
RL_CAN_RESIZE = hasattr(lib, "rl_reset_screen_size")
env = XSH.env
# reads in history
readline.set_history_length(-1)
ReadlineHistoryAdder()
# sets up IPython-like history matching with up and down
readline.parse_and_bind('"\\e[B": history-search-forward')
readline.parse_and_bind('"\\e[A": history-search-backward')
# Setup Shift-Tab to indent
readline.parse_and_bind('"\\e[Z": "{0}"'.format(env.get("INDENT")))
# handle tab completion differences found in libedit readline compatibility
# as discussed at http://stackoverflow.com/a/7116997
if uses_libedit and ON_DARWIN:
readline.parse_and_bind("bind ^I rl_complete")
print(
"\n".join([
"",
"*" * 78,
"libedit detected - readline will not be well behaved, including but not limited to:",
" * crashes on tab completion",
" * incorrect history navigation",
" * corrupting long-lines",
" * failure to wrap or indent lines properly",
"",
"It is highly recommended that you install gnureadline, which is installable with:",
" xpip install gnureadline",
"*" * 78,
]),
file=sys.stderr,
)
else:
readline.parse_and_bind("tab: complete")
# try to load custom user settings
inputrc_name = os_environ.get("INPUTRC")
if inputrc_name is None:
if uses_libedit:
inputrc_name = ".editrc"
else:
inputrc_name = ".inputrc"
inputrc_name = os.path.join(os.path.expanduser("~"), inputrc_name)
if (not ON_WINDOWS) and (not os.path.isfile(inputrc_name)):
inputrc_name = "/etc/inputrc"
if ON_WINDOWS:
winutils.enable_virtual_terminal_processing()
if os.path.isfile(inputrc_name):
try:
readline.read_init_file(inputrc_name)
except Exception:
# this seems to fail with libedit
print_exception(
"xonsh: could not load readline default init file.")
# Protection against paste jacking (issue #1154)
# This must be set after the init file is loaded since read_init_file()
# automatically disables bracketed paste
# (https://github.com/python/cpython/pull/24108)
readline.parse_and_bind("set enable-bracketed-paste on")
# properly reset input typed before the first prompt
readline.set_startup_hook(carriage_return)
def setup_readline():
"""Sets up the readline module and completion suppression, if available."""
global RL_COMPLETION_SUPPRESS_APPEND, RL_LIB, RL_CAN_RESIZE, RL_STATE, readline, RL_COMPLETION_QUERY_ITEMS
if RL_COMPLETION_SUPPRESS_APPEND is not None:
return
for _rlmod_name in ("gnureadline", "readline"):
try:
readline = importlib.import_module(_rlmod_name)
sys.modules["readline"] = readline
except ImportError:
pass
else:
break
if readline is None:
print(
"""Skipping setup. Because no `readline` implementation available.
Please install a backend (`readline`, `prompt-toolkit`, etc) to use
`xonsh` interactively.
See https://github.com/xonsh/xonsh/issues/1170"""
)
return
import ctypes
import ctypes.util
uses_libedit = readline.__doc__ and "libedit" in readline.__doc__
readline.set_completer_delims(" \t\n")
# Cygwin seems to hang indefinitely when querying the readline lib
if (not ON_CYGWIN) and (not ON_MSYS) and (not readline.__file__.endswith(".py")):
RL_LIB = lib = ctypes.cdll.LoadLibrary(readline.__file__)
try:
RL_COMPLETION_SUPPRESS_APPEND = ctypes.c_int.in_dll(
lib, "rl_completion_suppress_append"
)
except ValueError:
# not all versions of readline have this symbol, ie Macs sometimes
RL_COMPLETION_SUPPRESS_APPEND = None
try:
RL_COMPLETION_QUERY_ITEMS = ctypes.c_int.in_dll(
lib, "rl_completion_query_items"
)
except ValueError:
# not all versions of readline have this symbol, ie Macs sometimes
RL_COMPLETION_QUERY_ITEMS = None
try:
RL_STATE = ctypes.c_int.in_dll(lib, "rl_readline_state")
except Exception:
pass
RL_CAN_RESIZE = hasattr(lib, "rl_reset_screen_size")
env = builtins.__xonsh__.env
# reads in history
readline.set_history_length(-1)
ReadlineHistoryAdder()
# sets up IPython-like history matching with up and down
readline.parse_and_bind('"\\e[B": history-search-forward')
readline.parse_and_bind('"\\e[A": history-search-backward')
# Setup Shift-Tab to indent
readline.parse_and_bind('"\\e[Z": "{0}"'.format(env.get("INDENT")))
# handle tab completion differences found in libedit readline compatibility
# as discussed at http://stackoverflow.com/a/7116997
if uses_libedit and ON_DARWIN:
readline.parse_and_bind("bind ^I rl_complete")
print(
"\n".join(
[
"",
"*" * 78,
"libedit detected - readline will not be well behaved, including but not limited to:",
" * crashes on tab completion",
" * incorrect history navigation",
" * corrupting long-lines",
" * failure to wrap or indent lines properly",
"",
"It is highly recommended that you install gnureadline, which is installable with:",
" xpip install gnureadline",
"*" * 78,
]
),
file=sys.stderr,
)
else:
readline.parse_and_bind("tab: complete")
# try to load custom user settings
inputrc_name = os_environ.get("INPUTRC")
if inputrc_name is None:
if uses_libedit:
inputrc_name = ".editrc"
else:
inputrc_name = ".inputrc"
inputrc_name = os.path.join(os.path.expanduser("~"), inputrc_name)
if (not ON_WINDOWS) and (not os.path.isfile(inputrc_name)):
inputrc_name = "/etc/inputrc"
if ON_WINDOWS:
winutils.enable_virtual_terminal_processing()
if os.path.isfile(inputrc_name):
try:
readline.read_init_file(inputrc_name)
except Exception:
# this seems to fail with libedit
print_exception("xonsh: could not load readline default init file.")
# properly reset input typed before the first prompt
readline.set_startup_hook(carriage_return)
