class TerminalPdb(Pdb):
def __init__(self, *args, **kwargs):
Pdb.__init__(self, *args, **kwargs)
self._ptcomp = None
self.pt_init()
def pt_init(self):
def get_prompt_tokens():
return [(Token.Prompt, self.prompt)]
if self._ptcomp is None:
compl = IPCompleter(shell=self.shell,
namespace={},
global_namespace={},
parent=self.shell,
)
self._ptcomp = IPythonPTCompleter(compl)
kb = KeyBindings()
supports_suspend = Condition(lambda: hasattr(signal, 'SIGTSTP'))
kb.add('c-z', filter=supports_suspend)(suspend_to_bg)
if self.shell.display_completions == 'readlinelike':
kb.add('tab', filter=(has_focus(DEFAULT_BUFFER)
& ~has_selection
& vi_insert_mode | emacs_insert_mode
& ~cursor_in_leading_ws
))(display_completions_like_readline)
self.pt_app = PromptSession(
message=(lambda: PygmentsTokens(get_prompt_tokens())),
editing_mode=getattr(EditingMode, self.shell.editing_mode.upper()),
key_bindings=kb,
history=self.shell.debugger_history,
completer=self._ptcomp,
enable_history_search=True,
mouse_support=self.shell.mouse_support,
complete_style=self.shell.pt_complete_style,
style=self.shell.style,
inputhook=self.shell.inputhook,
)
def cmdloop(self, intro=None):
"""Repeatedly issue a prompt, accept input, parse an initial prefix
off the received input, and dispatch to action methods, passing them
the remainder of the line as argument.
override the same methods from cmd.Cmd to provide prompt toolkit replacement.
"""
if not self.use_rawinput:
raise ValueError('Sorry ipdb does not support use_rawinput=False')
self.preloop()
try:
if intro is not None:
self.intro = intro
if self.intro:
self.stdout.write(str(self.intro)+"\n")
stop = None
while not stop:
if self.cmdqueue:
line = self.cmdqueue.pop(0)
else:
self._ptcomp.ipy_completer.namespace = self.curframe_locals
self._ptcomp.ipy_completer.global_namespace = self.curframe.f_globals
try:
line = self.pt_app.prompt() # reset_current_buffer=True)
except EOFError:
line = 'EOF'
line = self.precmd(line)
stop = self.onecmd(line)
stop = self.postcmd(stop, line)
self.postloop()
except Exception:
raise
class TerminalPdb(Pdb):
"""Standalone IPython debugger."""
def __init__(self, *args, pt_session_options=None, **kwargs):
Pdb.__init__(self, *args, **kwargs)
self._ptcomp = None
self.pt_init(pt_session_options)
def pt_init(self, pt_session_options=None):
"""Initialize the prompt session and the prompt loop
and store them in self.pt_app and self.pt_loop.
Additional keyword arguments for the PromptSession class
can be specified in pt_session_options.
"""
if pt_session_options is None:
pt_session_options = {}
def get_prompt_tokens():
return [(Token.Prompt, self.prompt)]
if self._ptcomp is None:
compl = IPCompleter(shell=self.shell,
namespace={},
global_namespace={},
parent=self.shell)
# add a completer for all the do_ methods
methods_names = [m[3:] for m in dir(self) if m.startswith("do_")]
def gen_comp(self, text):
return [m for m in methods_names if m.startswith(text)]
import types
newcomp = types.MethodType(gen_comp, compl)
compl.custom_matchers.insert(0, newcomp)
# end add completer.
self._ptcomp = IPythonPTCompleter(compl)
options = dict(
message=(lambda: PygmentsTokens(get_prompt_tokens())),
editing_mode=getattr(EditingMode, self.shell.editing_mode.upper()),
key_bindings=create_ipython_shortcuts(self.shell),
history=self.shell.debugger_history,
completer=self._ptcomp,
enable_history_search=True,
mouse_support=self.shell.mouse_support,
complete_style=self.shell.pt_complete_style,
style=self.shell.style,
color_depth=self.shell.color_depth,
)
if not PTK3:
options['inputhook'] = self.shell.inputhook
options.update(pt_session_options)
self.pt_loop = asyncio.new_event_loop()
self.pt_app = PromptSession(**options)
def cmdloop(self, intro=None):
"""Repeatedly issue a prompt, accept input, parse an initial prefix
off the received input, and dispatch to action methods, passing them
the remainder of the line as argument.
override the same methods from cmd.Cmd to provide prompt toolkit replacement.
"""
if not self.use_rawinput:
raise ValueError('Sorry ipdb does not support use_rawinput=False')
# In order to make sure that prompt, which uses asyncio doesn't
# interfere with applications in which it's used, we always run the
# prompt itself in a different thread (we can't start an event loop
# within an event loop). This new thread won't have any event loop
# running, and here we run our prompt-loop.
self.preloop()
try:
if intro is not None:
self.intro = intro
if self.intro:
self.stdout.write(str(self.intro) + "\n")
stop = None
while not stop:
if self.cmdqueue:
line = self.cmdqueue.pop(0)
else:
self._ptcomp.ipy_completer.namespace = self.curframe_locals
self._ptcomp.ipy_completer.global_namespace = self.curframe.f_globals
# Run the prompt in a different thread.
line = ''
keyboard_interrupt = False
def in_thread():
nonlocal line, keyboard_interrupt
try:
line = self.pt_app.prompt()
except EOFError:
line = 'EOF'
except KeyboardInterrupt:
keyboard_interrupt = True
th = threading.Thread(target=in_thread)
th.start()
th.join()
if keyboard_interrupt:
raise KeyboardInterrupt
line = self.precmd(line)
stop = self.onecmd(line)
stop = self.postcmd(stop, line)
self.postloop()
except Exception:
raise
class PromptToolkit2Shell(BaseShell):
"""The xonsh shell for prompt_toolkit v2."""
completion_displays_to_styles = {
"multi": CompleteStyle.MULTI_COLUMN,
"single": CompleteStyle.COLUMN,
"readline": CompleteStyle.READLINE_LIKE,
"none": None,
}
def __init__(self, **kwargs):
super().__init__(**kwargs)
if ON_WINDOWS:
winutils.enable_virtual_terminal_processing()
self._first_prompt = True
self.history = ThreadedHistory(PromptToolkitHistory())
self.prompter = PromptSession(history=self.history)
self.pt_completer = PromptToolkitCompleter(self.completer, self.ctx,
self)
self.key_bindings = KeyBindings()
load_xonsh_bindings(self.key_bindings)
# Store original `_history_matches` in case we need to restore it
self._history_matches_orig = self.prompter.default_buffer._history_matches
# This assumes that PromptToolkit2Shell is a singleton
events.on_ptk_create.fire(
prompter=self.prompter,
history=self.history,
completer=self.pt_completer,
bindings=self.key_bindings,
)
def singleline(self,
auto_suggest=None,
enable_history_search=True,
multiline=True,
**kwargs):
"""Reads a single line of input from the shell. The store_in_history
kwarg flags whether the input should be stored in PTK's in-memory
history.
"""
events.on_pre_prompt.fire()
env = builtins.__xonsh__.env
mouse_support = env.get("MOUSE_SUPPORT")
auto_suggest = auto_suggest if env.get("AUTO_SUGGEST") else None
completions_display = env.get("COMPLETIONS_DISPLAY")
complete_style = self.completion_displays_to_styles[
completions_display]
complete_while_typing = env.get("UPDATE_COMPLETIONS_ON_KEYPRESS")
if complete_while_typing:
# PTK requires history search to be none when completing while typing
enable_history_search = False
if HAS_PYGMENTS:
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
completer = None if completions_display == "none" else self.pt_completer
if env.get("UPDATE_PROMPT_ON_KEYPRESS"):
get_prompt_tokens = self.prompt_tokens
get_rprompt_tokens = self.rprompt_tokens
get_bottom_toolbar_tokens = self.bottom_toolbar_tokens
else:
get_prompt_tokens = self.prompt_tokens()
get_rprompt_tokens = self.rprompt_tokens()
get_bottom_toolbar_tokens = self.bottom_toolbar_tokens()
if env.get("VI_MODE"):
editing_mode = EditingMode.VI
else:
editing_mode = EditingMode.EMACS
if env.get("XONSH_HISTORY_MATCH_ANYWHERE"):
self.prompter.default_buffer._history_matches = MethodType(
_cust_history_matches, self.prompter.default_buffer)
elif (self.prompter.default_buffer._history_matches
is not self._history_matches_orig):
self.prompter.default_buffer._history_matches = self._history_matches_orig
prompt_args = {
"mouse_support": mouse_support,
"auto_suggest": auto_suggest,
"message": get_prompt_tokens,
"rprompt": get_rprompt_tokens,
"bottom_toolbar": get_bottom_toolbar_tokens,
"completer": completer,
"multiline": multiline,
"editing_mode": editing_mode,
"prompt_continuation": self.continuation_tokens,
"enable_history_search": enable_history_search,
"reserve_space_for_menu": 10,
"key_bindings": self.key_bindings,
"complete_style": complete_style,
"complete_while_typing": complete_while_typing,
"include_default_pygments_style": False,
}
if builtins.__xonsh__.env.get("COLOR_INPUT"):
style = style_from_pygments_dict(DEFAULT_STYLE_DICT)
prompt_args["style"] = style
style_overrides_env = env.get("PTK_STYLE_OVERRIDES")
if style_overrides_env:
try:
style_overrides = Style.from_dict(style_overrides_env)
prompt_args["style"] = merge_styles(
[style, style_overrides])
except (AttributeError, TypeError, ValueError):
print_exception()
line = self.prompter.prompt(**prompt_args)
events.on_post_prompt.fire()
return line
def _push(self, line):
"""Pushes a line onto the buffer and compiles the code in a way that
enables multiline input.
"""
code = None
self.buffer.append(line)
if self.need_more_lines:
return None, code
src = "".join(self.buffer)
src = transform_command(src)
try:
code = self.execer.compile(src,
mode="single",
glbs=self.ctx,
locs=None)
self.reset_buffer()
except Exception: # pylint: disable=broad-except
self.reset_buffer()
print_exception()
return src, None
return src, code
def cmdloop(self, intro=None):
"""Enters a loop that reads and execute input from user."""
if intro:
print(intro)
auto_suggest = AutoSuggestFromHistory()
self.push = self._push
while not builtins.__xonsh__.exit:
try:
line = self.singleline(auto_suggest=auto_suggest)
if not line:
self.emptyline()
else:
line = self.precmd(line)
self.default(line)
except (KeyboardInterrupt, SystemExit):
self.reset_buffer()
except EOFError:
if builtins.__xonsh__.env.get("IGNOREEOF"):
print('Use "exit" to leave the shell.', file=sys.stderr)
else:
break
def prompt_tokens(self):
"""Returns a list of (token, str) tuples for the current prompt."""
p = builtins.__xonsh__.env.get("PROMPT")
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
if self._first_prompt:
carriage_return()
self._first_prompt = False
self.settitle()
return PygmentsTokens(toks)
def rprompt_tokens(self):
"""Returns a list of (token, str) tuples for the current right
prompt.
"""
p = builtins.__xonsh__.env.get("RIGHT_PROMPT")
# self.prompt_formatter does handle empty strings properly,
# but this avoids descending into it in the common case of
# $RIGHT_PROMPT == ''.
if isinstance(p, str) and len(p) == 0:
return []
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
return PygmentsTokens(toks)
def bottom_toolbar_tokens(self):
"""Returns a list of (token, str) tuples for the current bottom
toolbar.
"""
p = builtins.__xonsh__.env.get("BOTTOM_TOOLBAR")
if not p:
return
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
return PygmentsTokens(toks)
def continuation_tokens(self, width, line_number, is_soft_wrap=False):
"""Displays dots in multiline prompt"""
if is_soft_wrap:
return ""
width = width - 1
dots = builtins.__xonsh__.env.get("MULTILINE_PROMPT")
dots = dots() if callable(dots) else dots
if dots is None:
return [(Token, " " * (width + 1))]
basetoks = self.format_color(dots)
baselen = sum(len(t[1]) for t in basetoks)
if baselen == 0:
return [(Token, " " * (width + 1))]
toks = basetoks * (width // baselen)
n = width % baselen
count = 0
for tok in basetoks:
slen = len(tok[1])
newcount = slen + count
if slen == 0:
continue
elif newcount <= n:
toks.append(tok)
else:
toks.append((tok[0], tok[1][:n - count]))
count = newcount
if n <= count:
break
toks.append((Token, " ")) # final space
return PygmentsTokens(toks)
def format_color(self, string, hide=False, force_string=False, **kwargs):
"""Formats a color string using Pygments. This, therefore, returns
a list of (Token, str) tuples. If force_string is set to true, though,
this will return a color formatted string.
"""
tokens = partial_color_tokenize(string)
if force_string and HAS_PYGMENTS:
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
proxy_style = pyghooks.xonsh_style_proxy(self.styler)
formatter = pyghooks.XonshTerminal256Formatter(style=proxy_style)
s = pygments.format(tokens, formatter)
return s
elif force_string:
print("To force colorization of string, install Pygments")
return tokens
else:
return tokens
def print_color(self, string, end="\n", **kwargs):
"""Prints a color string using prompt-toolkit color management."""
if isinstance(string, str):
tokens = partial_color_tokenize(string)
else:
# assume this is a list of (Token, str) tuples and just print
tokens = string
tokens = PygmentsTokens(tokens)
if HAS_PYGMENTS:
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
proxy_style = style_from_pygments_cls(
pyghooks.xonsh_style_proxy(self.styler))
else:
proxy_style = style_from_pygments_dict(DEFAULT_STYLE_DICT)
ptk_print(tokens,
style=proxy_style,
end=end,
include_default_pygments_style=False)
def color_style_names(self):
"""Returns an iterable of all available style names."""
if not HAS_PYGMENTS:
return ["For other xonsh styles, please install pygments"]
return get_all_styles()
def color_style(self):
"""Returns the current color map."""
if not HAS_PYGMENTS:
return DEFAULT_STYLE_DICT
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
return self.styler.styles
def restore_tty_sanity(self):
"""An interface for resetting the TTY stdin mode. This is highly
class PromptToolkitShell(BaseShell):
"""The xonsh shell for prompt_toolkit v2 and later."""
completion_displays_to_styles = {
"multi": CompleteStyle.MULTI_COLUMN,
"single": CompleteStyle.COLUMN,
"readline": CompleteStyle.READLINE_LIKE,
"none": None,
}
def __init__(self, **kwargs):
super().__init__(**kwargs)
if ON_WINDOWS:
winutils.enable_virtual_terminal_processing()
self._first_prompt = True
self.history = ThreadedHistory(PromptToolkitHistory())
self.prompter = PromptSession(history=self.history)
self.prompt_formatter = PTKPromptFormatter(self.prompter)
self.pt_completer = PromptToolkitCompleter(self.completer, self.ctx,
self)
self.key_bindings = load_xonsh_bindings()
# Store original `_history_matches` in case we need to restore it
self._history_matches_orig = self.prompter.default_buffer._history_matches
# This assumes that PromptToolkitShell is a singleton
events.on_ptk_create.fire(
prompter=self.prompter,
history=self.history,
completer=self.pt_completer,
bindings=self.key_bindings,
)
# Goes at the end, since _MergedKeyBindings objects do not have
# an add() function, which is necessary for on_ptk_create events
self.key_bindings = merge_key_bindings(
[self.key_bindings,
load_emacs_shift_selection_bindings()])
def singleline(self,
auto_suggest=None,
enable_history_search=True,
multiline=True,
**kwargs):
"""Reads a single line of input from the shell. The store_in_history
kwarg flags whether the input should be stored in PTK's in-memory
history.
"""
events.on_pre_prompt_format.fire()
env = builtins.__xonsh__.env
mouse_support = env.get("MOUSE_SUPPORT")
auto_suggest = auto_suggest if env.get("AUTO_SUGGEST") else None
refresh_interval = env.get("PROMPT_REFRESH_INTERVAL")
refresh_interval = refresh_interval if refresh_interval > 0 else None
complete_in_thread = env.get("COMPLETION_IN_THREAD")
completions_display = env.get("COMPLETIONS_DISPLAY")
complete_style = self.completion_displays_to_styles[
completions_display]
complete_while_typing = env.get("UPDATE_COMPLETIONS_ON_KEYPRESS")
if complete_while_typing:
# PTK requires history search to be none when completing while typing
enable_history_search = False
if HAS_PYGMENTS:
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
completer = None if completions_display == "none" else self.pt_completer
events.on_timingprobe.fire(name="on_pre_prompt_tokenize")
get_bottom_toolbar_tokens = self.bottom_toolbar_tokens
if env.get("UPDATE_PROMPT_ON_KEYPRESS"):
get_prompt_tokens = self.prompt_tokens
get_rprompt_tokens = self.rprompt_tokens
else:
get_prompt_tokens = self.prompt_tokens()
get_rprompt_tokens = self.rprompt_tokens()
if get_bottom_toolbar_tokens:
get_bottom_toolbar_tokens = get_bottom_toolbar_tokens()
events.on_timingprobe.fire(name="on_post_prompt_tokenize")
if env.get("VI_MODE"):
editing_mode = EditingMode.VI
else:
editing_mode = EditingMode.EMACS
if env.get("XONSH_HISTORY_MATCH_ANYWHERE"):
self.prompter.default_buffer._history_matches = MethodType(
_cust_history_matches, self.prompter.default_buffer)
elif (self.prompter.default_buffer._history_matches
is not self._history_matches_orig):
self.prompter.default_buffer._history_matches = self._history_matches_orig
prompt_args = {
"mouse_support": mouse_support,
"auto_suggest": auto_suggest,
"message": get_prompt_tokens,
"rprompt": get_rprompt_tokens,
"bottom_toolbar": get_bottom_toolbar_tokens,
"completer": completer,
"multiline": multiline,
"editing_mode": editing_mode,
"prompt_continuation": self.continuation_tokens,
"enable_history_search": enable_history_search,
"reserve_space_for_menu": 0,
"key_bindings": self.key_bindings,
"complete_style": complete_style,
"complete_while_typing": complete_while_typing,
"include_default_pygments_style": False,
"refresh_interval": refresh_interval,
"complete_in_thread": complete_in_thread,
}
if env.get("COLOR_INPUT"):
events.on_timingprobe.fire(name="on_pre_prompt_style")
if HAS_PYGMENTS:
prompt_args["lexer"] = PygmentsLexer(pyghooks.XonshLexer)
style = style_from_pygments_cls(
pyghooks.xonsh_style_proxy(self.styler))
else:
style = style_from_pygments_dict(DEFAULT_STYLE_DICT)
prompt_args["style"] = style
events.on_timingprobe.fire(name="on_post_prompt_style")
style_overrides_env = env.get("PTK_STYLE_OVERRIDES")
if style_overrides_env:
try:
style_overrides = Style.from_dict(style_overrides_env)
prompt_args["style"] = merge_styles(
[style, style_overrides])
except (AttributeError, TypeError, ValueError):
print_exception()
if env["ENABLE_ASYNC_PROMPT"]:
# once the prompt is done, update it in background as each future is completed
prompt_args["pre_run"] = self.prompt_formatter.start_update
events.on_pre_prompt.fire()
line = self.prompter.prompt(**prompt_args)
events.on_post_prompt.fire()
return line
def _push(self, line):
"""Pushes a line onto the buffer and compiles the code in a way that
enables multiline input.
"""
code = None
self.buffer.append(line)
if self.need_more_lines:
return None, code
src = "".join(self.buffer)
src = transform_command(src)
try:
code = self.execer.compile(src,
mode="single",
glbs=self.ctx,
locs=None)
self.reset_buffer()
except Exception: # pylint: disable=broad-except
self.reset_buffer()
print_exception()
return src, None
return src, code
def cmdloop(self, intro=None):
"""Enters a loop that reads and execute input from user."""
if intro:
print(intro)
auto_suggest = AutoSuggestFromHistory()
self.push = self._push
while not builtins.__xonsh__.exit:
try:
line = self.singleline(auto_suggest=auto_suggest)
if not line:
self.emptyline()
else:
line = self.precmd(line)
self.default(line)
except (KeyboardInterrupt, SystemExit):
self.reset_buffer()
except EOFError:
if builtins.__xonsh__.env.get("IGNOREEOF"):
print('Use "exit" to leave the shell.', file=sys.stderr)
else:
break
def _get_prompt_tokens(self, env_name: str, prompt_name: str, **kwargs):
env = builtins.__xonsh__.env # type:ignore
p = env.get(env_name)
if not p and "default" in kwargs:
return kwargs.pop("default")
try:
p = self.prompt_formatter(template=p,
threaded=env["ENABLE_ASYNC_PROMPT"],
prompt_name=prompt_name)
except Exception: # pylint: disable=broad-except
print_exception()
p, osc_tokens = remove_ansi_osc(p)
if kwargs.get("handle_osc_tokens"):
# handle OSC tokens
for osc in osc_tokens:
if osc[2:4] == "0;":
env["TITLE"] = osc[4:-1]
else:
print(osc, file=sys.__stdout__, flush=True)
toks = partial_color_tokenize(p)
return tokenize_ansi(PygmentsTokens(toks))
def prompt_tokens(self):
"""Returns a list of (token, str) tuples for the current prompt."""
if self._first_prompt:
carriage_return()
self._first_prompt = False
tokens = self._get_prompt_tokens("PROMPT",
"message",
handle_osc_tokens=True)
self.settitle()
return tokens
def rprompt_tokens(self):
"""Returns a list of (token, str) tuples for the current right
prompt.
"""
return self._get_prompt_tokens("RIGHT_PROMPT", "rprompt", default=[])
def _bottom_toolbar_tokens(self):
"""Returns a list of (token, str) tuples for the current bottom
toolbar.
"""
return self._get_prompt_tokens("BOTTOM_TOOLBAR",
"bottom_toolbar",
default=None)
@property
def bottom_toolbar_tokens(self):
"""Returns self._bottom_toolbar_tokens if it would yield a result"""
if builtins.__xonsh__.env.get("BOTTOM_TOOLBAR"):
return self._bottom_toolbar_tokens
def continuation_tokens(self, width, line_number, is_soft_wrap=False):
"""Displays dots in multiline prompt"""
if is_soft_wrap:
return ""
width = width - 1
dots = builtins.__xonsh__.env.get("MULTILINE_PROMPT")
dots = dots() if callable(dots) else dots
if not dots:
return ""
basetoks = self.format_color(dots)
baselen = sum(len(t[1]) for t in basetoks)
if baselen == 0:
return [(Token, " " * (width + 1))]
toks = basetoks * (width // baselen)
n = width % baselen
count = 0
for tok in basetoks:
slen = len(tok[1])
newcount = slen + count
if slen == 0:
continue
elif newcount <= n:
toks.append(tok)
else:
toks.append((tok[0], tok[1][:n - count]))
count = newcount
if n <= count:
break
toks.append((Token, " ")) # final space
return PygmentsTokens(toks)
def format_color(self, string, hide=False, force_string=False, **kwargs):
"""Formats a color string using Pygments. This, therefore, returns
a list of (Token, str) tuples. If force_string is set to true, though,
this will return a color formatted string.
"""
tokens = partial_color_tokenize(string)
if force_string and HAS_PYGMENTS:
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
proxy_style = pyghooks.xonsh_style_proxy(self.styler)
formatter = pyghooks.XonshTerminal256Formatter(style=proxy_style)
s = pygments.format(tokens, formatter)
return s
elif force_string:
print("To force colorization of string, install Pygments")
return tokens
else:
return tokens
def print_color(self, string, end="\n", **kwargs):
"""Prints a color string using prompt-toolkit color management."""
if isinstance(string, str):
tokens = partial_color_tokenize(string)
else:
# assume this is a list of (Token, str) tuples and just print
tokens = string
tokens = PygmentsTokens(tokens)
if HAS_PYGMENTS:
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
proxy_style = style_from_pygments_cls(
pyghooks.xonsh_style_proxy(self.styler))
else:
proxy_style = style_from_pygments_dict(DEFAULT_STYLE_DICT)
ptk_print(tokens,
style=proxy_style,
end=end,
include_default_pygments_style=False)
def color_style_names(self):
"""Returns an iterable of all available style names."""
if not HAS_PYGMENTS:
return ["For other xonsh styles, please install pygments"]
return get_all_styles()
def color_style(self):
"""Returns the current color map."""
if not HAS_PYGMENTS:
return DEFAULT_STYLE_DICT
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
return self.styler.styles
def restore_tty_sanity(self):
"""An interface for resetting the TTY stdin mode. This is highly
dependent on the shell backend. Also it is mostly optional since
it only affects ^Z backgrounding behaviour.
"""
# PTK does not seem to need any specialization here. However,
# if it does for some reason in the future...
# The following writes an ANSI escape sequence that sends the cursor
# to the end of the line. This has the effect of restoring ECHO mode.
# See http://unix.stackexchange.com/a/108014/129048 for more details.
# This line can also be replaced by os.system("stty sane"), as per
# http://stackoverflow.com/questions/19777129/interactive-python-interpreter-run-in-background#comment29421919_19778355
# However, it is important to note that not termios-based solution
# seems to work. My guess is that this is because termios restoration
# needs to be performed by the subprocess itself. This fix is important
# when subprocesses don't properly restore the terminal attributes,
# like Python in interactive mode. Also note that the sequences "\033M"
# and "\033E" seem to work too, but these are technically VT100 codes.
# I used the more primitive ANSI sequence to maximize compatibility.
# -scopatz 2017-01-28
# if not ON_POSIX:
# return
# sys.stdout.write('\033[9999999C\n')
if not ON_POSIX:
return
stty, _ = builtins.__xonsh__.commands_cache.lazyget(
"stty", (None, None))
if stty is None:
return
os.system(stty + " sane")
class ZMQTerminalInteractiveShell(SingletonConfigurable):
readline_use = False
pt_cli = None
_executing = False
_execution_state = Unicode('')
_pending_clearoutput = False
_eventloop = None
own_kernel = False # Changed by ZMQTerminalIPythonApp
editing_mode = Unicode('emacs', config=True,
help="Shortcut style to use at the prompt. 'vi' or 'emacs'.",
)
highlighting_style = Unicode('', config=True,
help="The name of a Pygments style to use for syntax highlighting"
)
highlighting_style_overrides = Dict(config=True,
help="Override highlighting format for specific tokens"
)
true_color = Bool(False, config=True,
help=("Use 24bit colors instead of 256 colors in prompt highlighting. "
"If your terminal supports true color, the following command "
"should print 'TRUECOLOR' in orange: "
"printf \"\\x1b[38;2;255;100;0mTRUECOLOR\\x1b[0m\\n\"")
)
history_load_length = Integer(1000, config=True,
help="How many history items to load into memory"
)
banner = Unicode('Jupyter console {version}\n\n{kernel_banner}', config=True,
help=("Text to display before the first prompt. Will be formatted with "
"variables {version} and {kernel_banner}.")
)
kernel_timeout = Float(60, config=True,
help="""Timeout for giving up on a kernel (in seconds).
On first connect and restart, the console tests whether the
kernel is running and responsive by sending kernel_info_requests.
This sets the timeout in seconds for how long the kernel can take
before being presumed dead.
"""
)
image_handler = Enum(('PIL', 'stream', 'tempfile', 'callable'),
'PIL', config=True, allow_none=True, help=
"""
Handler for image type output. This is useful, for example,
when connecting to the kernel in which pylab inline backend is
activated. There are four handlers defined. 'PIL': Use
Python Imaging Library to popup image; 'stream': Use an
external program to show the image. Image will be fed into
the STDIN of the program. You will need to configure
`stream_image_handler`; 'tempfile': Use an external program to
show the image. Image will be saved in a temporally file and
the program is called with the temporally file. You will need
to configure `tempfile_image_handler`; 'callable': You can set
any Python callable which is called with the image data. You
will need to configure `callable_image_handler`.
"""
)
stream_image_handler = List(config=True, help=
"""
Command to invoke an image viewer program when you are using
'stream' image handler. This option is a list of string where
the first element is the command itself and reminders are the
options for the command. Raw image data is given as STDIN to
the program.
"""
)
tempfile_image_handler = List(config=True, help=
"""
Command to invoke an image viewer program when you are using
'tempfile' image handler. This option is a list of string
where the first element is the command itself and reminders
are the options for the command. You can use {file} and
{format} in the string to represent the location of the
generated image file and image format.
"""
)
callable_image_handler = Any(config=True, help=
"""
Callable object called via 'callable' image handler with one
argument, `data`, which is `msg["content"]["data"]` where
`msg` is the message from iopub channel. For example, you can
find base64 encoded PNG data as `data['image/png']`. If your function
can't handle the data supplied, it should return `False` to indicate
this.
"""
)
mime_preference = List(
default_value=['image/png', 'image/jpeg', 'image/svg+xml'],
config=True, help=
"""
Preferred object representation MIME type in order. First
matched MIME type will be used.
"""
)
use_kernel_is_complete = Bool(True, config=True,
help="""Whether to use the kernel's is_complete message
handling. If False, then the frontend will use its
own is_complete handler.
"""
)
kernel_is_complete_timeout = Float(1, config=True,
help="""Timeout (in seconds) for giving up on a kernel's is_complete
response.
If the kernel does not respond at any point within this time,
the kernel will no longer be asked if code is complete, and the
console will default to the built-in is_complete test.
"""
)
# This is configurable on JupyterConsoleApp; this copy is not configurable
# to avoid a duplicate config option.
confirm_exit = Bool(True,
help="""Set to display confirmation dialog on exit.
You can always use 'exit' or 'quit', to force a
direct exit without any confirmation.
"""
)
highlight_matching_brackets = Bool(True,
help="Highlight matching brackets.",
).tag(config=True)
manager = Instance('jupyter_client.KernelManager', allow_none=True)
client = Instance('jupyter_client.KernelClient', allow_none=True)
def _client_changed(self, name, old, new):
self.session_id = new.session.session
session_id = Unicode()
def _banner1_default(self):
return "Jupyter Console {version}\n".format(version=__version__)
simple_prompt = Bool(False,
help="""Use simple fallback prompt. Features may be limited."""
).tag(config=True)
def __init__(self, **kwargs):
# This is where traits with a config_key argument are updated
# from the values on config.
super(ZMQTerminalInteractiveShell, self).__init__(**kwargs)
self.configurables = [self]
self.init_history()
self.init_completer()
self.init_io()
self.init_kernel_info()
self.init_prompt_toolkit_cli()
self.keep_running = True
self.execution_count = 1
def init_completer(self):
"""Initialize the completion machinery.
This creates completion machinery that can be used by client code,
either interactively in-process (typically triggered by the readline
library), programmatically (such as in test suites) or out-of-process
(typically over the network by remote frontends).
"""
self.Completer = ZMQCompleter(self, self.client, config=self.config)
def init_history(self):
"""Sets up the command history. """
self.history_manager = ZMQHistoryManager(client=self.client)
self.configurables.append(self.history_manager)
def get_prompt_tokens(self):
return [
(Token.Prompt, 'In ['),
(Token.PromptNum, str(self.execution_count)),
(Token.Prompt, ']: '),
]
def get_continuation_tokens(self, width):
return [
(Token.Prompt, (' ' * (width - 2)) + ': '),
]
def get_out_prompt_tokens(self):
return [
(Token.OutPrompt, 'Out['),
(Token.OutPromptNum, str(self.execution_count)),
(Token.OutPrompt, ']: ')
]
def print_out_prompt(self):
tokens = self.get_out_prompt_tokens()
print_formatted_text(PygmentsTokens(tokens), end='',
style = self.pt_cli.app.style)
kernel_info = {}
def init_kernel_info(self):
"""Wait for a kernel to be ready, and store kernel info"""
timeout = self.kernel_timeout
tic = time.time()
self.client.hb_channel.unpause()
msg_id = self.client.kernel_info()
while True:
try:
reply = self.client.get_shell_msg(timeout=1)
except Empty:
if (time.time() - tic) > timeout:
raise RuntimeError("Kernel didn't respond to kernel_info_request")
else:
if reply['parent_header'].get('msg_id') == msg_id:
self.kernel_info = reply['content']
return
def show_banner(self):
print(self.banner.format(version=__version__,
kernel_banner=self.kernel_info.get('banner', '')))
def init_prompt_toolkit_cli(self):
if self.simple_prompt or ('JUPYTER_CONSOLE_TEST' in os.environ):
# Simple restricted interface for tests so we can find prompts with
# pexpect. Multi-line input not supported.
def prompt():
return cast_unicode_py2(input('In [%d]: ' % self.execution_count))
self.prompt_for_code = prompt
self.print_out_prompt = \
lambda: print('Out[%d]: ' % self.execution_count, end='')
return
kb = KeyBindings()
insert_mode = vi_insert_mode | emacs_insert_mode
@kb.add("enter", filter=(has_focus(DEFAULT_BUFFER)
& ~has_selection
& insert_mode
))
def _(event):
b = event.current_buffer
d = b.document
if not (d.on_last_line or d.cursor_position_row >= d.line_count
- d.empty_line_count_at_the_end()):
b.newline()
return
# Pressing enter flushes any pending display. This also ensures
# the displayed execution_count is correct.
self.handle_iopub()
more, indent = self.check_complete(d.text)
if (not more) and b.accept_handler:
b.validate_and_handle()
else:
b.insert_text('\n' + indent)
@kb.add("c-c", filter=has_focus(DEFAULT_BUFFER))
def _(event):
event.current_buffer.reset()
@kb.add("c-\\", filter=has_focus(DEFAULT_BUFFER))
def _(event):
raise EOFError
@kb.add("c-z", filter=Condition(lambda: suspend_to_background_supported()))
def _(event):
event.cli.suspend_to_background()
# Pre-populate history from IPython's history database
history = InMemoryHistory()
last_cell = u""
for _, _, cell in self.history_manager.get_tail(self.history_load_length,
include_latest=True):
# Ignore blank lines and consecutive duplicates
cell = cast_unicode_py2(cell.rstrip())
if cell and (cell != last_cell):
history.append_string(cell)
style_overrides = {
Token.Prompt: '#009900',
Token.PromptNum: '#00ff00 bold',
Token.OutPrompt: '#ff2200',
Token.OutPromptNum: '#ff0000 bold',
}
if self.highlighting_style:
style_cls = get_style_by_name(self.highlighting_style)
else:
style_cls = get_style_by_name('default')
# The default theme needs to be visible on both a dark background
# and a light background, because we can't tell what the terminal
# looks like. These tweaks to the default theme help with that.
style_overrides.update({
Token.Number: '#007700',
Token.Operator: 'noinherit',
Token.String: '#BB6622',
Token.Name.Function: '#2080D0',
Token.Name.Class: 'bold #2080D0',
Token.Name.Namespace: 'bold #2080D0',
})
style_overrides.update(self.highlighting_style_overrides)
style = merge_styles([
style_from_pygments_cls(style_cls),
style_from_pygments_dict(style_overrides),
])
editing_mode = getattr(EditingMode, self.editing_mode.upper())
langinfo = self.kernel_info.get('language_info', {})
lexer = langinfo.get('pygments_lexer', langinfo.get('name', 'text'))
# If enabled in the settings, highlight matching brackets
# when the DEFAULT_BUFFER has the focus
input_processors = [ConditionalProcessor(
processor=HighlightMatchingBracketProcessor(chars='[](){}'),
filter=has_focus(DEFAULT_BUFFER) & ~is_done &
Condition(lambda: self.highlight_matching_brackets))
]
self.pt_cli = PromptSession(
message=(lambda: PygmentsTokens(self.get_prompt_tokens())),
multiline=True,
editing_mode=editing_mode,
lexer=PygmentsLexer(get_pygments_lexer(lexer)),
prompt_continuation=(
lambda width, lineno, is_soft_wrap:
PygmentsTokens(self.get_continuation_tokens(width))
),
key_bindings=kb,
history=history,
completer=JupyterPTCompleter(self.Completer),
enable_history_search=True,
style=style,
input_processors=input_processors,
color_depth=(ColorDepth.TRUE_COLOR if self.true_color else None),
)
def prompt_for_code(self):
if self.next_input:
default = self.next_input
self.next_input = None
else:
default = ''
with patch_stdout(raw=True):
text = self.pt_cli.prompt(
default=default,
# pre_run=self.pre_prompt,# reset_current_buffer=True,
)
return text
def init_io(self):
if sys.platform not in {'win32', 'cli'}:
return
import colorama
colorama.init()
def check_complete(self, code):
if self.use_kernel_is_complete:
msg_id = self.client.is_complete(code)
try:
return self.handle_is_complete_reply(msg_id,
timeout=self.kernel_is_complete_timeout)
except SyntaxError:
return False, ""
else:
lines = code.splitlines()
if len(lines):
more = (lines[-1] != "")
return more, ""
else:
return False, ""
def ask_exit(self):
self.keep_running = False
# This is set from payloads in handle_execute_reply
next_input = None
def pre_prompt(self):
if self.next_input:
# We can't set the buffer here, because it will be reset just after
# this. Adding a callable to pre_run_callables does what we need
# after the buffer is reset.
s = cast_unicode_py2(self.next_input)
def set_doc():
self.pt_cli.app.buffer.document = Document(s)
if hasattr(self.pt_cli, 'pre_run_callables'):
self.pt_cli.app.pre_run_callables.append(set_doc)
else:
# Older version of prompt_toolkit; it's OK to set the document
# directly here.
set_doc()
self.next_input = None
def interact(self, display_banner=None):
while self.keep_running:
print('\n', end='')
try:
code = self.prompt_for_code()
except EOFError:
if (not self.confirm_exit) or \
ask_yes_no('Do you really want to exit ([y]/n)?', 'y', 'n'):
self.ask_exit()
else:
if code:
self.run_cell(code, store_history=True)
def mainloop(self):
self.keepkernel = not self.own_kernel
# An extra layer of protection in case someone mashing Ctrl-C breaks
# out of our internal code.
while True:
try:
self.interact()
break
except KeyboardInterrupt:
print("\nKeyboardInterrupt escaped interact()\n")
if self._eventloop:
self._eventloop.close()
if self.keepkernel and not self.own_kernel:
print('keeping kernel alive')
elif self.keepkernel and self.own_kernel:
print("owning kernel, cannot keep it alive")
self.client.shutdown()
else:
print("Shutting down kernel")
self.client.shutdown()
def run_cell(self, cell, store_history=True):
"""Run a complete IPython cell.
Parameters
----------
cell : str
The code (including IPython code such as %magic functions) to run.
store_history : bool
If True, the raw and translated cell will be stored in IPython's
history. For user code calling back into IPython's machinery, this
should be set to False.
"""
if (not cell) or cell.isspace():
# pressing enter flushes any pending display
self.handle_iopub()
return
# flush stale replies, which could have been ignored, due to missed heartbeats
while self.client.shell_channel.msg_ready():
self.client.shell_channel.get_msg()
# execute takes 'hidden', which is the inverse of store_hist
msg_id = self.client.execute(cell, not store_history)
# first thing is wait for any side effects (output, stdin, etc.)
self._executing = True
self._execution_state = "busy"
while self._execution_state != 'idle' and self.client.is_alive():
try:
self.handle_input_request(msg_id, timeout=0.05)
except Empty:
# display intermediate print statements, etc.
self.handle_iopub(msg_id)
except ZMQError as e:
# Carry on if polling was interrupted by a signal
if e.errno != errno.EINTR:
raise
# after all of that is done, wait for the execute reply
while self.client.is_alive():
try:
self.handle_execute_reply(msg_id, timeout=0.05)
except Empty:
pass
else:
break
self._executing = False
#-----------------
# message handlers
#-----------------
def handle_execute_reply(self, msg_id, timeout=None):
msg = self.client.shell_channel.get_msg(block=False, timeout=timeout)
if msg["parent_header"].get("msg_id", None) == msg_id:
self.handle_iopub(msg_id)
content = msg["content"]
status = content['status']
if status == 'aborted':
self.write('Aborted\n')
return
elif status == 'ok':
# handle payloads
for item in content.get("payload", []):
source = item['source']
if source == 'page':
page.page(item['data']['text/plain'])
elif source == 'set_next_input':
self.next_input = item['text']
elif source == 'ask_exit':
self.keepkernel = item.get('keepkernel', False)
self.ask_exit()
elif status == 'error':
pass
self.execution_count = int(content["execution_count"] + 1)
def handle_is_complete_reply(self, msg_id, timeout=None):
"""
Wait for a repsonse from the kernel, and return two values:
more? - (boolean) should the frontend ask for more input
indent - an indent string to prefix the input
Overloaded methods may want to examine the comeplete source. Its is
in the self._source_lines_buffered list.
"""
## Get the is_complete response:
msg = None
try:
msg = self.client.shell_channel.get_msg(block=True, timeout=timeout)
except Empty:
warn('The kernel did not respond to an is_complete_request. '
'Setting `use_kernel_is_complete` to False.')
self.use_kernel_is_complete = False
return False, ""
## Handle response:
if msg["parent_header"].get("msg_id", None) != msg_id:
warn('The kernel did not respond properly to an is_complete_request: %s.' % str(msg))
return False, ""
else:
status = msg["content"].get("status", None)
indent = msg["content"].get("indent", "")
## Return more? and indent string
if status == "complete":
return False, indent
elif status == "incomplete":
return True, indent
elif status == "invalid":
raise SyntaxError()
elif status == "unknown":
return False, indent
else:
warn('The kernel sent an invalid is_complete_reply status: "%s".' % status)
return False, indent
include_other_output = Bool(False, config=True,
help="""Whether to include output from clients
other than this one sharing the same kernel.
Outputs are not displayed until enter is pressed.
"""
)
other_output_prefix = Unicode("[remote] ", config=True,
help="""Prefix to add to outputs coming from clients other than this one.
Only relevant if include_other_output is True.
"""
)
def from_here(self, msg):
"""Return whether a message is from this session"""
return msg['parent_header'].get("session", self.session_id) == self.session_id
def include_output(self, msg):
"""Return whether we should include a given output message"""
from_here = self.from_here(msg)
if msg['msg_type'] == 'execute_input':
# only echo inputs not from here
return self.include_other_output and not from_here
if self.include_other_output:
return True
else:
return from_here
def handle_iopub(self, msg_id=''):
"""Process messages on the IOPub channel
This method consumes and processes messages on the IOPub channel,
such as stdout, stderr, execute_result and status.
It only displays output that is caused by this session.
"""
while self.client.iopub_channel.msg_ready():
sub_msg = self.client.iopub_channel.get_msg()
msg_type = sub_msg['header']['msg_type']
parent = sub_msg["parent_header"]
# Update execution_count in case it changed in another session
if msg_type == "execute_input":
self.execution_count = int(sub_msg["content"]["execution_count"]) + 1
if self.include_output(sub_msg):
if msg_type == 'status':
self._execution_state = sub_msg["content"]["execution_state"]
elif msg_type == 'stream':
if sub_msg["content"]["name"] == "stdout":
if self._pending_clearoutput:
print("\r", end="")
self._pending_clearoutput = False
print(sub_msg["content"]["text"], end="")
sys.stdout.flush()
elif sub_msg["content"]["name"] == "stderr":
if self._pending_clearoutput:
print("\r", file=sys.stderr, end="")
self._pending_clearoutput = False
print(sub_msg["content"]["text"], file=sys.stderr, end="")
sys.stderr.flush()
elif msg_type == 'execute_result':
if self._pending_clearoutput:
print("\r", end="")
self._pending_clearoutput = False
self.execution_count = int(sub_msg["content"]["execution_count"])
if not self.from_here(sub_msg):
sys.stdout.write(self.other_output_prefix)
format_dict = sub_msg["content"]["data"]
self.handle_rich_data(format_dict)
if 'text/plain' not in format_dict:
continue
# prompt_toolkit writes the prompt at a slightly lower level,
# so flush streams first to ensure correct ordering.
sys.stdout.flush()
sys.stderr.flush()
self.print_out_prompt()
text_repr = format_dict['text/plain']
if '\n' in text_repr:
# For multi-line results, start a new line after prompt
print()
print(text_repr)
elif msg_type == 'display_data':
data = sub_msg["content"]["data"]
handled = self.handle_rich_data(data)
if not handled:
if not self.from_here(sub_msg):
sys.stdout.write(self.other_output_prefix)
# if it was an image, we handled it by now
if 'text/plain' in data:
print(data['text/plain'])
elif msg_type == 'execute_input':
content = sub_msg['content']
if not self.from_here(sub_msg):
sys.stdout.write(self.other_output_prefix)
sys.stdout.write('In [{}]: '.format(content['execution_count']))
sys.stdout.write(content['code'] + '\n')
elif msg_type == 'clear_output':
if sub_msg["content"]["wait"]:
self._pending_clearoutput = True
else:
print("\r", end="")
elif msg_type == 'error':
for frame in sub_msg["content"]["traceback"]:
print(frame, file=sys.stderr)
_imagemime = {
'image/png': 'png',
'image/jpeg': 'jpeg',
'image/svg+xml': 'svg',
}
def handle_rich_data(self, data):
for mime in self.mime_preference:
if mime in data and mime in self._imagemime:
if self.handle_image(data, mime):
return True
return False
def handle_image(self, data, mime):
handler = getattr(
self, 'handle_image_{0}'.format(self.image_handler), None)
if handler:
return handler(data, mime)
def handle_image_PIL(self, data, mime):
if mime not in ('image/png', 'image/jpeg'):
return False
try:
from PIL import Image, ImageShow
except ImportError:
return False
raw = base64.decodestring(data[mime].encode('ascii'))
img = Image.open(BytesIO(raw))
return ImageShow.show(img)
def handle_image_stream(self, data, mime):
raw = base64.decodestring(data[mime].encode('ascii'))
imageformat = self._imagemime[mime]
fmt = dict(format=imageformat)
args = [s.format(**fmt) for s in self.stream_image_handler]
with open(os.devnull, 'w') as devnull:
proc = subprocess.Popen(
args, stdin=subprocess.PIPE,
stdout=devnull, stderr=devnull)
proc.communicate(raw)
return (proc.returncode == 0)
def handle_image_tempfile(self, data, mime):
raw = base64.decodestring(data[mime].encode('ascii'))
imageformat = self._imagemime[mime]
filename = 'tmp.{0}'.format(imageformat)
with NamedFileInTemporaryDirectory(filename) as f, \
open(os.devnull, 'w') as devnull:
f.write(raw)
f.flush()
fmt = dict(file=f.name, format=imageformat)
args = [s.format(**fmt) for s in self.tempfile_image_handler]
rc = subprocess.call(args, stdout=devnull, stderr=devnull)
return (rc == 0)
def handle_image_callable(self, data, mime):
res = self.callable_image_handler(data)
if res is not False:
# If handler func returns e.g. None, assume it has handled the data.
res = True
return res
def handle_input_request(self, msg_id, timeout=0.1):
""" Method to capture raw_input
"""
req = self.client.stdin_channel.get_msg(timeout=timeout)
# in case any iopub came while we were waiting:
self.handle_iopub(msg_id)
if msg_id == req["parent_header"].get("msg_id"):
# wrap SIGINT handler
real_handler = signal.getsignal(signal.SIGINT)
def double_int(sig, frame):
# call real handler (forwards sigint to kernel),
# then raise local interrupt, stopping local raw_input
real_handler(sig, frame)
raise KeyboardInterrupt
signal.signal(signal.SIGINT, double_int)
content = req['content']
read = getpass if content.get('password', False) else input
try:
raw_data = read(content["prompt"])
except EOFError:
# turn EOFError into EOF character
raw_data = '\x04'
except KeyboardInterrupt:
sys.stdout.write('\n')
return
finally:
# restore SIGINT handler
signal.signal(signal.SIGINT, real_handler)
# only send stdin reply if there *was not* another request
# or execution finished while we were reading.
if not (self.client.stdin_channel.msg_ready() or
self.client.shell_channel.msg_ready()):
self.client.input(raw_data)
if __name__ == '__main__':
default_config()
style = Style.from_dict({
# User input (default text).
'': '#ffffff',
# Prompt.
'pound': '#caa9fa',
})
message = [
('class:pound', '>>> '),
]
session = PromptSession(history=FileHistory(HISTORY_PATH))
while True:
user_input = session.prompt(message,
style=style,
auto_suggest=AutoSuggestFromHistory(),
completer=generate_completer())
blocks = trim(user_input).split(' ')
if blocks[0] == 'all':
connect_node.print_node()
elif blocks[0] == 'info':
json2vmess.show_info(blocks[1:])
elif blocks[0] == 'disconnect':
connect_node.disconnect()
elif blocks[0] == 'connect':
connect_node.connect(blocks[1:])
elif blocks[0] == 'delete':
del_func.delete_func(blocks[1:])
elif blocks[0] == 'port':
port_path.port_about(blocks[1:])
class PromptToolkit2Shell(BaseShell):
"""The xonsh shell for prompt_toolkit v2."""
def __init__(self, **kwargs):
super().__init__(**kwargs)
if ON_WINDOWS:
winutils.enable_virtual_terminal_processing()
self._first_prompt = True
self.history = ThreadedHistory(PromptToolkitHistory())
self.prompter = PromptSession(history=self.history)
self.pt_completer = PromptToolkitCompleter(self.completer, self.ctx, self)
self.key_bindings = KeyBindings()
load_xonsh_bindings(self.key_bindings)
# This assumes that PromptToolkit2Shell is a singleton
events.on_ptk_create.fire(
prompter=self.prompter,
history=self.history,
completer=self.pt_completer,
bindings=self.key_bindings,
)
def singleline(self, auto_suggest=None, enable_history_search=True,
multiline=True, **kwargs):
"""Reads a single line of input from the shell. The store_in_history
kwarg flags whether the input should be stored in PTK's in-memory
history.
"""
events.on_pre_prompt.fire()
env = builtins.__xonsh_env__
mouse_support = env.get('MOUSE_SUPPORT')
auto_suggest = auto_suggest if env.get('AUTO_SUGGEST') else None
completions_display = env.get('COMPLETIONS_DISPLAY')
if completions_display == 'multi':
complete_style = CompleteStyle.MULTI_COLUMN
complete_while_typing = env.get('UPDATE_COMPLETIONS_ON_KEYPRESS')
if complete_while_typing:
# PTK requires history search to be none when completing while typing
enable_history_search = False
if HAS_PYGMENTS:
self.styler.style_name = env.get('XONSH_COLOR_STYLE')
completer = None if completions_display == 'none' else self.pt_completer
if env.get('UPDATE_PROMPT_ON_KEYPRESS'):
get_prompt_tokens = self.prompt_tokens
get_rprompt_tokens = self.rprompt_tokens
get_bottom_toolbar_tokens = self.bottom_toolbar_tokens
else:
get_prompt_tokens = self.prompt_tokens()
get_rprompt_tokens = self.rprompt_tokens()
get_bottom_toolbar_tokens = self.bottom_toolbar_tokens()
if env.get('VI_MODE'):
editing_mode = EditingMode.VI
else:
editing_mode = EditingMode.EMACS
prompt_args = {
'mouse_support': mouse_support,
'auto_suggest': auto_suggest,
'message': get_prompt_tokens,
'rprompt': get_rprompt_tokens,
'bottom_toolbar': get_bottom_toolbar_tokens,
'completer': completer,
'multiline': multiline,
'editing_mode': editing_mode,
'prompt_continuation': self.continuation_tokens,
'enable_history_search': enable_history_search,
'reserve_space_for_menu': 0,
'key_bindings': self.key_bindings,
'complete_style': complete_style,
'complete_while_typing': complete_while_typing,
'include_default_pygments_style': False,
}
if builtins.__xonsh_env__.get('COLOR_INPUT'):
if HAS_PYGMENTS:
prompt_args['lexer'] = PygmentsLexer(pyghooks.XonshLexer)
style = style_from_pygments_cls(
pyghooks.xonsh_style_proxy(self.styler))
else:
style = style_from_pygments_dict(DEFAULT_STYLE_DICT)
prompt_args['style'] = style
line = self.prompter.prompt(**prompt_args)
events.on_post_prompt.fire()
return line
def _push(self, line):
"""Pushes a line onto the buffer and compiles the code in a way that
enables multiline input.
"""
code = None
self.buffer.append(line)
if self.need_more_lines:
return None, code
src = ''.join(self.buffer)
src = transform_command(src)
try:
code = self.execer.compile(src,
mode='single',
glbs=self.ctx,
locs=None)
self.reset_buffer()
except Exception: # pylint: disable=broad-except
self.reset_buffer()
print_exception()
return src, None
return src, code
def cmdloop(self, intro=None):
"""Enters a loop that reads and execute input from user."""
if intro:
print(intro)
auto_suggest = AutoSuggestFromHistory()
self.push = self._push
while not builtins.__xonsh_exit__:
try:
line = self.singleline(auto_suggest=auto_suggest)
if not line:
self.emptyline()
else:
line = self.precmd(line)
self.default(line)
except (KeyboardInterrupt, SystemExit):
self.reset_buffer()
except EOFError:
if builtins.__xonsh_env__.get("IGNOREEOF"):
print('Use "exit" to leave the shell.', file=sys.stderr)
else:
break
def prompt_tokens(self):
"""Returns a list of (token, str) tuples for the current prompt."""
p = builtins.__xonsh_env__.get('PROMPT')
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
if self._first_prompt:
carriage_return()
self._first_prompt = False
self.settitle()
return PygmentsTokens(toks)
def rprompt_tokens(self):
"""Returns a list of (token, str) tuples for the current right
prompt.
"""
p = builtins.__xonsh_env__.get('RIGHT_PROMPT')
# self.prompt_formatter does handle empty strings properly,
# but this avoids descending into it in the common case of
# $RIGHT_PROMPT == ''.
if isinstance(p, str) and len(p) == 0:
return []
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
return PygmentsTokens(toks)
def bottom_toolbar_tokens(self):
"""Returns a list of (token, str) tuples for the current bottom
toolbar.
"""
p = builtins.__xonsh_env__.get('BOTTOM_TOOLBAR')
if not p:
return
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
return PygmentsTokens(toks)
def continuation_tokens(self, width, line_number, is_soft_wrap=False):
"""Displays dots in multiline prompt"""
if is_soft_wrap:
return ''
width = width - 1
dots = builtins.__xonsh_env__.get('MULTILINE_PROMPT')
dots = dots() if callable(dots) else dots
if dots is None:
return [(Token, ' ' * (width + 1))]
basetoks = self.format_color(dots)
baselen = sum(len(t[1]) for t in basetoks)
if baselen == 0:
return [(Token, ' ' * (width + 1))]
toks = basetoks * (width // baselen)
n = width % baselen
count = 0
for tok in basetoks:
slen = len(tok[1])
newcount = slen + count
if slen == 0:
continue
elif newcount <= n:
toks.append(tok)
else:
toks.append((tok[0], tok[1][:n - count]))
count = newcount
if n <= count:
break
toks.append((Token, ' ')) # final space
return PygmentsTokens(toks)
def format_color(self, string, hide=False, force_string=False, **kwargs):
"""Formats a color string using Pygments. This, therefore, returns
a list of (Token, str) tuples. If force_string is set to true, though,
this will return a color formatted string.
"""
tokens = partial_color_tokenize(string)
if force_string and HAS_PYGMENTS:
env = builtins.__xonsh_env__
self.styler.style_name = env.get('XONSH_COLOR_STYLE')
proxy_style = pyghooks.xonsh_style_proxy(self.styler)
formatter = pyghooks.XonshTerminal256Formatter(style=proxy_style)
s = pygments.format(tokens, formatter)
return s
elif force_string:
print("To force colorization of string, install Pygments")
return tokens
else:
return tokens
def print_color(self, string, end='\n', **kwargs):
"""Prints a color string using prompt-toolkit color management."""
if isinstance(string, str):
tokens = partial_color_tokenize(string)
else:
# assume this is a list of (Token, str) tuples and just print
tokens = string
tokens = PygmentsTokens(tokens)
if HAS_PYGMENTS:
env = builtins.__xonsh_env__
self.styler.style_name = env.get('XONSH_COLOR_STYLE')
proxy_style = style_from_pygments_cls(pyghooks.xonsh_style_proxy(self.styler))
else:
proxy_style = style_from_pygments_dict(DEFAULT_STYLE_DICT)
ptk_print(tokens, style=proxy_style, end=end, include_default_pygments_style=False)
def color_style_names(self):
"""Returns an iterable of all available style names."""
if not HAS_PYGMENTS:
return ['For other xonsh styles, please install pygments']
return get_all_styles()
def color_style(self):
"""Returns the current color map."""
if not HAS_PYGMENTS:
return DEFAULT_STYLE_DICT
env = builtins.__xonsh_env__
self.styler.style_name = env.get('XONSH_COLOR_STYLE')
return self.styler.styles
def restore_tty_sanity(self):
"""An interface for resetting the TTY stdin mode. This is highly
class PromptToolkit2Shell(BaseShell):
"""The xonsh shell for prompt_toolkit v2."""
completion_displays_to_styles = {
"multi": CompleteStyle.MULTI_COLUMN,
"single": CompleteStyle.COLUMN,
"readline": CompleteStyle.READLINE_LIKE,
"none": None,
}
def __init__(self, **kwargs):
super().__init__(**kwargs)
if ON_WINDOWS:
winutils.enable_virtual_terminal_processing()
self._first_prompt = True
self.history = ThreadedHistory(PromptToolkitHistory())
self.prompter = PromptSession(history=self.history)
self.pt_completer = PromptToolkitCompleter(self.completer, self.ctx, self)
self.key_bindings = KeyBindings()
load_xonsh_bindings(self.key_bindings)
# Store original `_history_matches` in case we need to restore it
self._history_matches_orig = self.prompter.default_buffer._history_matches
# This assumes that PromptToolkit2Shell is a singleton
events.on_ptk_create.fire(
prompter=self.prompter,
history=self.history,
completer=self.pt_completer,
bindings=self.key_bindings,
)
def singleline(
self, auto_suggest=None, enable_history_search=True, multiline=True, **kwargs
):
"""Reads a single line of input from the shell. The store_in_history
kwarg flags whether the input should be stored in PTK's in-memory
history.
"""
events.on_pre_prompt.fire()
env = builtins.__xonsh__.env
mouse_support = env.get("MOUSE_SUPPORT")
auto_suggest = auto_suggest if env.get("AUTO_SUGGEST") else None
completions_display = env.get("COMPLETIONS_DISPLAY")
complete_style = self.completion_displays_to_styles[completions_display]
complete_while_typing = env.get("UPDATE_COMPLETIONS_ON_KEYPRESS")
if complete_while_typing:
# PTK requires history search to be none when completing while typing
enable_history_search = False
if HAS_PYGMENTS:
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
completer = None if completions_display == "none" else self.pt_completer
if env.get("UPDATE_PROMPT_ON_KEYPRESS"):
get_prompt_tokens = self.prompt_tokens
get_rprompt_tokens = self.rprompt_tokens
get_bottom_toolbar_tokens = self.bottom_toolbar_tokens
else:
get_prompt_tokens = self.prompt_tokens()
get_rprompt_tokens = self.rprompt_tokens()
get_bottom_toolbar_tokens = self.bottom_toolbar_tokens()
if env.get("VI_MODE"):
editing_mode = EditingMode.VI
else:
editing_mode = EditingMode.EMACS
if env.get("XONSH_HISTORY_MATCH_ANYWHERE"):
self.prompter.default_buffer._history_matches = MethodType(
_cust_history_matches, self.prompter.default_buffer
)
elif (
self.prompter.default_buffer._history_matches
is not self._history_matches_orig
):
self.prompter.default_buffer._history_matches = self._history_matches_orig
prompt_args = {
"mouse_support": mouse_support,
"auto_suggest": auto_suggest,
"message": get_prompt_tokens,
"rprompt": get_rprompt_tokens,
"bottom_toolbar": get_bottom_toolbar_tokens,
"completer": completer,
"multiline": multiline,
"editing_mode": editing_mode,
"prompt_continuation": self.continuation_tokens,
"enable_history_search": enable_history_search,
"reserve_space_for_menu": 0,
"key_bindings": self.key_bindings,
"complete_style": complete_style,
"complete_while_typing": complete_while_typing,
"include_default_pygments_style": False,
}
if builtins.__xonsh__.env.get("COLOR_INPUT"):
if HAS_PYGMENTS:
prompt_args["lexer"] = PygmentsLexer(pyghooks.XonshLexer)
style = style_from_pygments_cls(pyghooks.xonsh_style_proxy(self.styler))
else:
style = style_from_pygments_dict(DEFAULT_STYLE_DICT)
prompt_args["style"] = style
style_overrides_env = env.get("PTK_STYLE_OVERRIDES")
if style_overrides_env:
try:
style_overrides = Style.from_dict(style_overrides_env)
prompt_args["style"] = merge_styles([style, style_overrides])
except (AttributeError, TypeError, ValueError):
print_exception()
line = self.prompter.prompt(**prompt_args)
events.on_post_prompt.fire()
return line
def _push(self, line):
"""Pushes a line onto the buffer and compiles the code in a way that
enables multiline input.
"""
code = None
self.buffer.append(line)
if self.need_more_lines:
return None, code
src = "".join(self.buffer)
src = transform_command(src)
try:
code = self.execer.compile(src, mode="single", glbs=self.ctx, locs=None)
self.reset_buffer()
except Exception: # pylint: disable=broad-except
self.reset_buffer()
print_exception()
return src, None
return src, code
def cmdloop(self, intro=None):
"""Enters a loop that reads and execute input from user."""
if intro:
print(intro)
auto_suggest = AutoSuggestFromHistory()
self.push = self._push
while not builtins.__xonsh__.exit:
try:
line = self.singleline(auto_suggest=auto_suggest)
if not line:
self.emptyline()
else:
line = self.precmd(line)
self.default(line)
except (KeyboardInterrupt, SystemExit):
self.reset_buffer()
except EOFError:
if builtins.__xonsh__.env.get("IGNOREEOF"):
print('Use "exit" to leave the shell.', file=sys.stderr)
else:
break
def prompt_tokens(self):
"""Returns a list of (token, str) tuples for the current prompt."""
p = builtins.__xonsh__.env.get("PROMPT")
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
if self._first_prompt:
carriage_return()
self._first_prompt = False
self.settitle()
return PygmentsTokens(toks)
def rprompt_tokens(self):
"""Returns a list of (token, str) tuples for the current right
prompt.
"""
p = builtins.__xonsh__.env.get("RIGHT_PROMPT")
# self.prompt_formatter does handle empty strings properly,
# but this avoids descending into it in the common case of
# $RIGHT_PROMPT == ''.
if isinstance(p, str) and len(p) == 0:
return []
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
return PygmentsTokens(toks)
def bottom_toolbar_tokens(self):
"""Returns a list of (token, str) tuples for the current bottom
toolbar.
"""
p = builtins.__xonsh__.env.get("BOTTOM_TOOLBAR")
if not p:
return
try:
p = self.prompt_formatter(p)
except Exception: # pylint: disable=broad-except
print_exception()
toks = partial_color_tokenize(p)
return PygmentsTokens(toks)
def continuation_tokens(self, width, line_number, is_soft_wrap=False):
"""Displays dots in multiline prompt"""
if is_soft_wrap:
return ""
width = width - 1
dots = builtins.__xonsh__.env.get("MULTILINE_PROMPT")
dots = dots() if callable(dots) else dots
if dots is None:
return [(Token, " " * (width + 1))]
basetoks = self.format_color(dots)
baselen = sum(len(t[1]) for t in basetoks)
if baselen == 0:
return [(Token, " " * (width + 1))]
toks = basetoks * (width // baselen)
n = width % baselen
count = 0
for tok in basetoks:
slen = len(tok[1])
newcount = slen + count
if slen == 0:
continue
elif newcount <= n:
toks.append(tok)
else:
toks.append((tok[0], tok[1][: n - count]))
count = newcount
if n <= count:
break
toks.append((Token, " ")) # final space
return PygmentsTokens(toks)
def format_color(self, string, hide=False, force_string=False, **kwargs):
"""Formats a color string using Pygments. This, therefore, returns
a list of (Token, str) tuples. If force_string is set to true, though,
this will return a color formatted string.
"""
tokens = partial_color_tokenize(string)
if force_string and HAS_PYGMENTS:
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
proxy_style = pyghooks.xonsh_style_proxy(self.styler)
formatter = pyghooks.XonshTerminal256Formatter(style=proxy_style)
s = pygments.format(tokens, formatter)
return s
elif force_string:
print("To force colorization of string, install Pygments")
return tokens
else:
return tokens
def print_color(self, string, end="\n", **kwargs):
"""Prints a color string using prompt-toolkit color management."""
if isinstance(string, str):
tokens = partial_color_tokenize(string)
else:
# assume this is a list of (Token, str) tuples and just print
tokens = string
tokens = PygmentsTokens(tokens)
if HAS_PYGMENTS:
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
proxy_style = style_from_pygments_cls(
pyghooks.xonsh_style_proxy(self.styler)
)
else:
proxy_style = style_from_pygments_dict(DEFAULT_STYLE_DICT)
ptk_print(
tokens, style=proxy_style, end=end, include_default_pygments_style=False
)
def color_style_names(self):
"""Returns an iterable of all available style names."""
if not HAS_PYGMENTS:
return ["For other xonsh styles, please install pygments"]
return get_all_styles()
def color_style(self):
"""Returns the current color map."""
if not HAS_PYGMENTS:
return DEFAULT_STYLE_DICT
env = builtins.__xonsh__.env
self.styler.style_name = env.get("XONSH_COLOR_STYLE")
return self.styler.styles
def restore_tty_sanity(self):
"""An interface for resetting the TTY stdin mode. This is highly
class TerminalPdb(Pdb):
"""Standalone IPython debugger."""
def __init__(self, *args, **kwargs):
Pdb.__init__(self, *args, **kwargs)
self._ptcomp = None
self.pt_init()
def pt_init(self):
def get_prompt_tokens():
return [(Token.Prompt, self.prompt)]
if self._ptcomp is None:
compl = IPCompleter(shell=self.shell,
namespace={},
global_namespace={},
parent=self.shell,
)
self._ptcomp = IPythonPTCompleter(compl)
kb = KeyBindings()
supports_suspend = Condition(lambda: hasattr(signal, 'SIGTSTP'))
kb.add('c-z', filter=supports_suspend)(suspend_to_bg)
if self.shell.display_completions == 'readlinelike':
kb.add('tab', filter=(has_focus(DEFAULT_BUFFER)
& ~has_selection
& vi_insert_mode | emacs_insert_mode
& ~cursor_in_leading_ws
))(display_completions_like_readline)
options = dict(
message=(lambda: PygmentsTokens(get_prompt_tokens())),
editing_mode=getattr(EditingMode, self.shell.editing_mode.upper()),
key_bindings=kb,
history=self.shell.debugger_history,
completer=self._ptcomp,
enable_history_search=True,
mouse_support=self.shell.mouse_support,
complete_style=self.shell.pt_complete_style,
style=self.shell.style,
color_depth=self.shell.color_depth,
)
if not PTK3:
options['inputhook'] = self.shell.inputhook
self.pt_loop = asyncio.new_event_loop()
self.pt_app = PromptSession(**options)
def cmdloop(self, intro=None):
"""Repeatedly issue a prompt, accept input, parse an initial prefix
off the received input, and dispatch to action methods, passing them
the remainder of the line as argument.
override the same methods from cmd.Cmd to provide prompt toolkit replacement.
"""
if not self.use_rawinput:
raise ValueError('Sorry ipdb does not support use_rawinput=False')
# In order to make sure that asyncio code written in the
# interactive shell doesn't interfere with the prompt, we run the
# prompt in a different event loop.
# If we don't do this, people could spawn coroutine with a
# while/true inside which will freeze the prompt.
try:
old_loop = asyncio.get_event_loop()
except RuntimeError:
# This happens when the user used `asyncio.run()`.
old_loop = None
self.preloop()
try:
if intro is not None:
self.intro = intro
if self.intro:
self.stdout.write(str(self.intro)+"\n")
stop = None
while not stop:
if self.cmdqueue:
line = self.cmdqueue.pop(0)
else:
self._ptcomp.ipy_completer.namespace = self.curframe_locals
self._ptcomp.ipy_completer.global_namespace = self.curframe.f_globals
asyncio.set_event_loop(self.pt_loop)
try:
line = self.pt_app.prompt()
except EOFError:
line = 'EOF'
finally:
# Restore the original event loop.
asyncio.set_event_loop(old_loop)
line = self.precmd(line)
stop = self.onecmd(line)
stop = self.postcmd(stop, line)
self.postloop()
except Exception:
raise
class InputPrompt(BaseSimplePrompt):
"""Create a text prompt that accepts user input.
A wrapper class around :class:`~prompt_toolkit.shortcuts.PromptSession`.
Args:
message: The question to ask the user.
Refer to :ref:`pages/dynamic:message` documentation for more details.
style: An :class:`InquirerPyStyle` instance.
Refer to :ref:`Style <pages/style:Alternate Syntax>` documentation for more details.
vi_mode: Use vim keybinding for the prompt.
Refer to :ref:`pages/kb:Keybindings` documentation for more details.
default: Set the default text value of the prompt.
Refer to :ref:`pages/dynamic:default` documentation for more details.
qmark: Question mark symbol. Custom symbol that will be displayed infront of the question before its answered.
amark: Answer mark symbol. Custom symbol that will be displayed infront of the question after its answered.
instruction: Short instruction to display next to the question.
long_instruction: Long instructions to display at the bottom of the prompt.
completer: Add auto completion to the prompt.
Refer to :ref:`pages/prompts/input:Auto Completion` documentation for more details.
multicolumn_complete: Change the auto-completion UI to a multi column display.
multiline: Enable multiline edit. While multiline edit is active, pressing `enter` won't complete the answer.
and will create a new line. Use `esc` followd by `enter` to complete the question.
validate: Add validation to user input.
Refer to :ref:`pages/validator:Validator` documentation for more details.
invalid_message: Error message to display when user input is invalid.
Refer to :ref:`pages/validator:Validator` documentation for more details.
transformer: A function which performs additional transformation on the value that gets printed to the terminal.
Different than `filter` parameter, this is only visual effect and won’t affect the actual value returned by :meth:`~InquirerPy.base.simple.BaseSimplePrompt.execute`.
Refer to :ref:`pages/dynamic:transformer` documentation for more details.
filter: A function which performs additional transformation on the result.
This affects the actual value returned by :meth:`~InquirerPy.base.simple.BaseSimplePrompt.execute`.
Refer to :ref:`pages/dynamic:filter` documentation for more details.
keybindings: Customise the builtin keybindings.
Refer to :ref:`pages/kb:Keybindings` for more details.
wrap_lines: Soft wrap question lines when question exceeds the terminal width.
raise_keyboard_interrupt: Raise the :class:`KeyboardInterrupt` exception when `ctrl-c` is pressed. If false, the result
will be `None` and the question is skiped.
is_password: Used internally for :class:`~InquirerPy.prompts.secret.SecretPrompt`.
mandatory: Indicate if the prompt is mandatory. If True, then the question cannot be skipped.
mandatory_message: Error message to show when user attempts to skip mandatory prompt.
session_result: Used internally for :ref:`index:Classic Syntax (PyInquirer)`.
input: Used internally and will be removed in future updates.
output: Used internally and will be removed in future updates.
Examples:
>>> from InquirerPy import inquirer
>>> result = inquirer.text(message="Enter your name:").execute()
>>> print(f"Name: {result}")
Name: Michael
"""
def __init__(
self,
message: InquirerPyMessage,
style: InquirerPyStyle = None,
vi_mode: bool = False,
default: InquirerPyDefault = "",
qmark: str = "?",
amark: str = "?",
instruction: str = "",
long_instruction: str = "",
completer: Union[Dict[str, Optional[str]], "Completer"] = None,
multicolumn_complete: bool = False,
multiline: bool = False,
validate: InquirerPyValidate = None,
invalid_message: str = "Invalid input",
transformer: Callable[[str], Any] = None,
filter: Callable[[str], Any] = None,
keybindings: InquirerPyKeybindings = None,
wrap_lines: bool = True,
raise_keyboard_interrupt: bool = True,
is_password: bool = False,
mandatory: bool = True,
mandatory_message: str = "Mandatory prompt",
session_result: InquirerPySessionResult = None,
input: "Input" = None,
output: "Output" = None,
) -> None:
super().__init__(
message,
style,
vi_mode=vi_mode,
qmark=qmark,
amark=amark,
instruction=instruction,
validate=validate,
invalid_message=invalid_message,
transformer=transformer,
filter=filter,
session_result=session_result,
default=default,
wrap_lines=wrap_lines,
mandatory=mandatory,
mandatory_message=mandatory_message,
raise_keyboard_interrupt=raise_keyboard_interrupt,
)
if not isinstance(self._default, str):
raise InvalidArgument(
f"{type(self).__name__} argument 'default' should be type of str"
)
self._completer = None
if isinstance(completer, dict):
self._completer = NestedCompleter.from_nested_dict(completer)
elif isinstance(completer, Completer):
self._completer = completer
self._multiline = multiline
self._complete_style = (CompleteStyle.COLUMN
if not multicolumn_complete else
CompleteStyle.MULTI_COLUMN)
@Condition
def is_multiline():
return self._multiline
if not keybindings:
keybindings = {}
self.kb_maps = {
"answer": [
{
"key": Keys.Enter,
"filter": ~is_multiline
},
{
"key": [Keys.Escape, Keys.Enter],
"filter": is_multiline
},
],
"completion": [{
"key": "c-space"
}],
**keybindings,
}
self.kb_func_lookup = {
"completion": [{
"func": self._handle_completion
}]
}
self._keybinding_factory()
self._session = PromptSession(
message=self._get_prompt_message,
key_bindings=self._kb,
style=self._style,
completer=self._completer,
validator=self._validator,
validate_while_typing=False,
input=input,
output=output,
editing_mode=self._editing_mode,
lexer=SimpleLexer(self._lexer),
is_password=is_password,
multiline=self._multiline,
complete_style=self._complete_style,
wrap_lines=wrap_lines,
bottom_toolbar=[("class:long_instruction",
long_instruction)] if long_instruction else None,
)
def _set_error(self, message: str) -> None:
self._session.default_buffer.validation_state = ValidationState.INVALID
self._session.default_buffer.validation_error = ValidationError(
message=message)
def _handle_enter(self, event) -> None:
try:
self._session.validator.validate(
self._session.default_buffer) # type: ignore
except ValidationError:
self._session.default_buffer.validate_and_handle()
else:
self.status["answered"] = True
self.status["result"] = self._session.default_buffer.text
self._session.default_buffer.text = ""
event.app.exit(result=self.status["result"])
def _handle_completion(self, event) -> None:
if self._completer is None:
return
buff = event.app.current_buffer
if buff.complete_state:
buff.complete_next()
else:
buff.start_completion(select_first=False)
def _get_prompt_message(
self,
pre_answer: Optional[Tuple[str, str]] = None,
post_answer: Optional[Tuple[str, str]] = None,
) -> List[Tuple[str, str]]:
"""Get message to display infront of the input buffer.
Args:
pre_answer: The formatted text to display before answering the question.
post_answer: The formatted text to display after answering the question.
Returns:
Formatted text in list of tuple format.
"""
if not pre_answer:
if self._multiline and not self._instruction:
pre_answer = ("class:instruction",
" ESC + Enter to finish input")
else:
pre_answer = (
"class:instruction",
" %s " % self.instruction if self.instruction else " ",
)
if not post_answer:
if self._multiline and self.status["result"]:
lines = self.status["result"].split("\n")
if len(lines) > 1:
number_of_chars = len("".join(lines[1:]))
lines[0] += "...[%s char%s]" % (
number_of_chars,
"s" if number_of_chars > 1 else "",
)
post_answer = ("class:answer", " %s" % lines[0])
else:
post_answer = ("class:answer", " %s" % self.status["result"])
formatted_message = super()._get_prompt_message(
pre_answer, post_answer)
if not self.status["answered"] and self._multiline:
formatted_message.append(
("class:questionmark", "\n%s " % INQUIRERPY_POINTER_SEQUENCE))
return formatted_message
def _run(self) -> str:
return self._session.prompt(default=self._default)
async def _run_async(self) -> Any:
return await self._session.prompt_async(default=self._default)