|
|
"""IPython terminal interface using prompt_toolkit in place of readline"""
|
|
|
from __future__ import print_function
|
|
|
|
|
|
import os
|
|
|
import sys
|
|
|
import signal
|
|
|
from warnings import warn
|
|
|
|
|
|
from IPython.core.error import TryNext
|
|
|
from IPython.core.interactiveshell import InteractiveShell
|
|
|
from IPython.utils.py3compat import cast_unicode_py2, input
|
|
|
from IPython.utils.terminal import toggle_set_term_title, set_term_title
|
|
|
from IPython.utils.process import abbrev_cwd
|
|
|
from traitlets import Bool, Unicode, Dict, Integer, observe
|
|
|
|
|
|
from prompt_toolkit.enums import DEFAULT_BUFFER, SEARCH_BUFFER, EditingMode
|
|
|
from prompt_toolkit.filters import HasFocus, HasSelection, Condition, ViInsertMode, EmacsInsertMode, IsDone
|
|
|
from prompt_toolkit.history import InMemoryHistory
|
|
|
from prompt_toolkit.shortcuts import create_prompt_application, create_eventloop, create_prompt_layout
|
|
|
from prompt_toolkit.interface import CommandLineInterface
|
|
|
from prompt_toolkit.key_binding.manager import KeyBindingManager
|
|
|
from prompt_toolkit.keys import Keys
|
|
|
from prompt_toolkit.layout.processors import ConditionalProcessor, HighlightMatchingBracketProcessor
|
|
|
from prompt_toolkit.styles import PygmentsStyle, DynamicStyle
|
|
|
|
|
|
from pygments.styles import get_style_by_name, get_all_styles
|
|
|
from pygments.token import Token
|
|
|
|
|
|
from .debugger import TerminalPdb, Pdb
|
|
|
from .pt_inputhooks import get_inputhook_func
|
|
|
from .interactiveshell import get_default_editor, TerminalMagics
|
|
|
from .ptutils import IPythonPTCompleter, IPythonPTLexer
|
|
|
|
|
|
_use_simple_prompt = 'IPY_TEST_SIMPLE_PROMPT' in os.environ or not sys.stdin.isatty()
|
|
|
|
|
|
class TerminalInteractiveShell(InteractiveShell):
|
|
|
colors_force = True
|
|
|
|
|
|
space_for_menu = Integer(6, help='Number of line at the bottom of the screen '
|
|
|
'to reserve for the completion menu'
|
|
|
).tag(config=True)
|
|
|
|
|
|
def _space_for_menu_changed(self, old, new):
|
|
|
self._update_layout()
|
|
|
|
|
|
pt_cli = None
|
|
|
debugger_history = None
|
|
|
|
|
|
simple_prompt = Bool(_use_simple_prompt,
|
|
|
help="""Use `raw_input` for the REPL, without completion, multiline input, and prompt colors.
|
|
|
|
|
|
Useful when controlling IPython as a subprocess, and piping STDIN/OUT/ERR. Known usage are:
|
|
|
IPython own testing machinery, and emacs inferior-shell integration through elpy.
|
|
|
|
|
|
This mode default to `True` if the `IPY_TEST_SIMPLE_PROMPT`
|
|
|
environment variable is set, or the current terminal is not a tty.
|
|
|
|
|
|
"""
|
|
|
).tag(config=True)
|
|
|
|
|
|
@property
|
|
|
def debugger_cls(self):
|
|
|
return Pdb if self.simple_prompt else TerminalPdb
|
|
|
|
|
|
autoedit_syntax = Bool(False,
|
|
|
help="auto editing of files with syntax errors.",
|
|
|
).tag(config=True)
|
|
|
|
|
|
|
|
|
confirm_exit = Bool(True,
|
|
|
help="""
|
|
|
Set to confirm when you try to exit IPython with an EOF (Control-D
|
|
|
in Unix, Control-Z/Enter in Windows). By typing 'exit' or 'quit',
|
|
|
you can force a direct exit without any confirmation.""",
|
|
|
).tag(config=True)
|
|
|
|
|
|
editing_mode = Unicode('emacs',
|
|
|
help="Shortcut style to use at the prompt. 'vi' or 'emacs'.",
|
|
|
).tag(config=True)
|
|
|
|
|
|
mouse_support = Bool(False,
|
|
|
help="Enable mouse support in the prompt"
|
|
|
).tag(config=True)
|
|
|
|
|
|
highlighting_style = Unicode('default',
|
|
|
help="The name of a Pygments style to use for syntax highlighting: \n %s" % ', '.join(get_all_styles())
|
|
|
).tag(config=True)
|
|
|
|
|
|
|
|
|
@observe('highlighting_style')
|
|
|
def _highlighting_style_changed(self, change):
|
|
|
self._style = self._make_style_from_name(self.highlighting_style)
|
|
|
|
|
|
highlighting_style_overrides = Dict(
|
|
|
help="Override highlighting format for specific tokens"
|
|
|
).tag(config=True)
|
|
|
|
|
|
editor = Unicode(get_default_editor(),
|
|
|
help="Set the editor used by IPython (default to $EDITOR/vi/notepad)."
|
|
|
).tag(config=True)
|
|
|
|
|
|
term_title = Bool(True,
|
|
|
help="Automatically set the terminal title"
|
|
|
).tag(config=True)
|
|
|
|
|
|
display_completions_in_columns = Bool(False,
|
|
|
help="Display a multi column completion menu.",
|
|
|
).tag(config=True)
|
|
|
|
|
|
highlight_matching_brackets = Bool(True,
|
|
|
help="Highlight matching brackets .",
|
|
|
).tag(config=True)
|
|
|
|
|
|
@observe('term_title')
|
|
|
def init_term_title(self, change=None):
|
|
|
# Enable or disable the terminal title.
|
|
|
if self.term_title:
|
|
|
toggle_set_term_title(True)
|
|
|
set_term_title('IPython: ' + abbrev_cwd())
|
|
|
else:
|
|
|
toggle_set_term_title(False)
|
|
|
|
|
|
def get_prompt_tokens(self, cli):
|
|
|
return [
|
|
|
(Token.Prompt, 'In ['),
|
|
|
(Token.PromptNum, str(self.execution_count)),
|
|
|
(Token.Prompt, ']: '),
|
|
|
]
|
|
|
|
|
|
def get_continuation_tokens(self, cli, width):
|
|
|
return [
|
|
|
(Token.Prompt, (' ' * (width - 5)) + '...: '),
|
|
|
]
|
|
|
|
|
|
def init_prompt_toolkit_cli(self):
|
|
|
if self.simple_prompt:
|
|
|
# Fall back to plain non-interactive output for tests.
|
|
|
# This is very limited, and only accepts a single line.
|
|
|
def prompt():
|
|
|
return cast_unicode_py2(input('In [%d]: ' % self.execution_count))
|
|
|
self.prompt_for_code = prompt
|
|
|
return
|
|
|
|
|
|
kbmanager = KeyBindingManager.for_prompt()
|
|
|
insert_mode = ViInsertMode() | EmacsInsertMode()
|
|
|
# Ctrl+J == Enter, seemingly
|
|
|
@kbmanager.registry.add_binding(Keys.ControlJ,
|
|
|
filter=(HasFocus(DEFAULT_BUFFER)
|
|
|
& ~HasSelection()
|
|
|
& 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
|
|
|
|
|
|
status, indent = self.input_splitter.check_complete(d.text)
|
|
|
|
|
|
if (status != 'incomplete') and b.accept_action.is_returnable:
|
|
|
b.accept_action.validate_and_handle(event.cli, b)
|
|
|
else:
|
|
|
b.insert_text('\n' + (' ' * (indent or 0)))
|
|
|
|
|
|
@kbmanager.registry.add_binding(Keys.ControlC, filter=HasFocus(DEFAULT_BUFFER))
|
|
|
def _reset_buffer(event):
|
|
|
event.current_buffer.reset()
|
|
|
|
|
|
@kbmanager.registry.add_binding(Keys.ControlC, filter=HasFocus(SEARCH_BUFFER))
|
|
|
def _reset_search_buffer(event):
|
|
|
if event.current_buffer.document.text:
|
|
|
event.current_buffer.reset()
|
|
|
else:
|
|
|
event.cli.push_focus(DEFAULT_BUFFER)
|
|
|
|
|
|
supports_suspend = Condition(lambda cli: hasattr(signal, 'SIGTSTP'))
|
|
|
|
|
|
@kbmanager.registry.add_binding(Keys.ControlZ, filter=supports_suspend)
|
|
|
def _suspend_to_bg(event):
|
|
|
event.cli.suspend_to_background()
|
|
|
|
|
|
@Condition
|
|
|
def cursor_in_leading_ws(cli):
|
|
|
before = cli.application.buffer.document.current_line_before_cursor
|
|
|
return (not before) or before.isspace()
|
|
|
|
|
|
# Ctrl+I == Tab
|
|
|
@kbmanager.registry.add_binding(Keys.ControlI,
|
|
|
filter=(HasFocus(DEFAULT_BUFFER)
|
|
|
& ~HasSelection()
|
|
|
& insert_mode
|
|
|
& cursor_in_leading_ws
|
|
|
))
|
|
|
def _indent_buffer(event):
|
|
|
event.current_buffer.insert_text(' ' * 4)
|
|
|
|
|
|
# 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 = cell.rstrip()
|
|
|
if cell and (cell != last_cell):
|
|
|
history.append(cell)
|
|
|
|
|
|
self._style = self._make_style_from_name(self.highlighting_style)
|
|
|
style = DynamicStyle(lambda: self._style)
|
|
|
|
|
|
editing_mode = getattr(EditingMode, self.editing_mode.upper())
|
|
|
|
|
|
self._app = create_prompt_application(
|
|
|
editing_mode=editing_mode,
|
|
|
key_bindings_registry=kbmanager.registry,
|
|
|
history=history,
|
|
|
completer=IPythonPTCompleter(self.Completer),
|
|
|
enable_history_search=True,
|
|
|
style=style,
|
|
|
mouse_support=self.mouse_support,
|
|
|
**self._layout_options()
|
|
|
)
|
|
|
self._eventloop = create_eventloop(self.inputhook)
|
|
|
self.pt_cli = CommandLineInterface(self._app, eventloop=self._eventloop)
|
|
|
|
|
|
def _make_style_from_name(self, name):
|
|
|
"""
|
|
|
Small wrapper that make an IPython compatible style from a style name
|
|
|
|
|
|
We need that to add style for prompt ... etc.
|
|
|
"""
|
|
|
style_cls = get_style_by_name(name)
|
|
|
style_overrides = {
|
|
|
Token.Prompt: '#009900',
|
|
|
Token.PromptNum: '#00ff00 bold',
|
|
|
}
|
|
|
if name == 'default':
|
|
|
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 = PygmentsStyle.from_defaults(pygments_style_cls=style_cls,
|
|
|
style_dict=style_overrides)
|
|
|
|
|
|
return style
|
|
|
|
|
|
def _layout_options(self):
|
|
|
"""
|
|
|
Return the current layout option for the current Terminal InteractiveShell
|
|
|
"""
|
|
|
return {
|
|
|
'lexer':IPythonPTLexer(),
|
|
|
'reserve_space_for_menu':self.space_for_menu,
|
|
|
'get_prompt_tokens':self.get_prompt_tokens,
|
|
|
'get_continuation_tokens':self.get_continuation_tokens,
|
|
|
'multiline':True,
|
|
|
'display_completions_in_columns': self.display_completions_in_columns,
|
|
|
|
|
|
# Highlight matching brackets, but only when this setting is
|
|
|
# enabled, and only when the DEFAULT_BUFFER has the focus.
|
|
|
'extra_input_processors': [ConditionalProcessor(
|
|
|
processor=HighlightMatchingBracketProcessor(chars='[](){}'),
|
|
|
filter=HasFocus(DEFAULT_BUFFER) & ~IsDone() &
|
|
|
Condition(lambda cli: self.highlight_matching_brackets))],
|
|
|
}
|
|
|
|
|
|
def _update_layout(self):
|
|
|
"""
|
|
|
Ask for a re computation of the application layout, if for example ,
|
|
|
some configuration options have changed.
|
|
|
"""
|
|
|
self._app.layout = create_prompt_layout(**self._layout_options())
|
|
|
|
|
|
def prompt_for_code(self):
|
|
|
document = self.pt_cli.run(
|
|
|
pre_run=self.pre_prompt, reset_current_buffer=True)
|
|
|
return document.text
|
|
|
|
|
|
def init_io(self):
|
|
|
if sys.platform not in {'win32', 'cli'}:
|
|
|
return
|
|
|
|
|
|
import colorama
|
|
|
colorama.init()
|
|
|
|
|
|
# For some reason we make these wrappers around stdout/stderr.
|
|
|
# For now, we need to reset them so all output gets coloured.
|
|
|
# https://github.com/ipython/ipython/issues/8669
|
|
|
from IPython.utils import io
|
|
|
io.stdout = io.IOStream(sys.stdout)
|
|
|
io.stderr = io.IOStream(sys.stderr)
|
|
|
|
|
|
def init_magics(self):
|
|
|
super(TerminalInteractiveShell, self).init_magics()
|
|
|
self.register_magics(TerminalMagics)
|
|
|
|
|
|
def init_alias(self):
|
|
|
# The parent class defines aliases that can be safely used with any
|
|
|
# frontend.
|
|
|
super(TerminalInteractiveShell, self).init_alias()
|
|
|
|
|
|
# Now define aliases that only make sense on the terminal, because they
|
|
|
# need direct access to the console in a way that we can't emulate in
|
|
|
# GUI or web frontend
|
|
|
if os.name == 'posix':
|
|
|
for cmd in ['clear', 'more', 'less', 'man']:
|
|
|
self.alias_manager.soft_define_alias(cmd, cmd)
|
|
|
|
|
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
|
super(TerminalInteractiveShell, self).__init__(*args, **kwargs)
|
|
|
self.init_prompt_toolkit_cli()
|
|
|
self.init_term_title()
|
|
|
self.keep_running = True
|
|
|
|
|
|
self.debugger_history = InMemoryHistory()
|
|
|
|
|
|
def ask_exit(self):
|
|
|
self.keep_running = False
|
|
|
|
|
|
rl_next_input = None
|
|
|
|
|
|
def pre_prompt(self):
|
|
|
if self.rl_next_input:
|
|
|
self.pt_cli.application.buffer.text = cast_unicode_py2(self.rl_next_input)
|
|
|
self.rl_next_input = None
|
|
|
|
|
|
def interact(self):
|
|
|
while self.keep_running:
|
|
|
print(self.separate_in, end='')
|
|
|
|
|
|
try:
|
|
|
code = self.prompt_for_code()
|
|
|
except EOFError:
|
|
|
if (not self.confirm_exit) \
|
|
|
or self.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)
|
|
|
if self.autoedit_syntax and self.SyntaxTB.last_syntax_error:
|
|
|
self.edit_syntax_error()
|
|
|
|
|
|
def mainloop(self):
|
|
|
# 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 hasattr(self, '_eventloop'):
|
|
|
self._eventloop.close()
|
|
|
|
|
|
_inputhook = None
|
|
|
def inputhook(self, context):
|
|
|
if self._inputhook is not None:
|
|
|
self._inputhook(context)
|
|
|
|
|
|
def enable_gui(self, gui=None):
|
|
|
if gui:
|
|
|
self._inputhook = get_inputhook_func(gui)
|
|
|
else:
|
|
|
self._inputhook = None
|
|
|
|
|
|
# Methods to support auto-editing of SyntaxErrors:
|
|
|
|
|
|
def edit_syntax_error(self):
|
|
|
"""The bottom half of the syntax error handler called in the main loop.
|
|
|
|
|
|
Loop until syntax error is fixed or user cancels.
|
|
|
"""
|
|
|
|
|
|
while self.SyntaxTB.last_syntax_error:
|
|
|
# copy and clear last_syntax_error
|
|
|
err = self.SyntaxTB.clear_err_state()
|
|
|
if not self._should_recompile(err):
|
|
|
return
|
|
|
try:
|
|
|
# may set last_syntax_error again if a SyntaxError is raised
|
|
|
self.safe_execfile(err.filename, self.user_ns)
|
|
|
except:
|
|
|
self.showtraceback()
|
|
|
else:
|
|
|
try:
|
|
|
with open(err.filename) as f:
|
|
|
# This should be inside a display_trap block and I
|
|
|
# think it is.
|
|
|
sys.displayhook(f.read())
|
|
|
except:
|
|
|
self.showtraceback()
|
|
|
|
|
|
def _should_recompile(self, e):
|
|
|
"""Utility routine for edit_syntax_error"""
|
|
|
|
|
|
if e.filename in ('<ipython console>', '<input>', '<string>',
|
|
|
'<console>', '<BackgroundJob compilation>',
|
|
|
None):
|
|
|
return False
|
|
|
try:
|
|
|
if (self.autoedit_syntax and
|
|
|
not self.ask_yes_no(
|
|
|
'Return to editor to correct syntax error? '
|
|
|
'[Y/n] ', 'y')):
|
|
|
return False
|
|
|
except EOFError:
|
|
|
return False
|
|
|
|
|
|
def int0(x):
|
|
|
try:
|
|
|
return int(x)
|
|
|
except TypeError:
|
|
|
return 0
|
|
|
|
|
|
# always pass integer line and offset values to editor hook
|
|
|
try:
|
|
|
self.hooks.fix_error_editor(e.filename,
|
|
|
int0(e.lineno), int0(e.offset),
|
|
|
e.msg)
|
|
|
except TryNext:
|
|
|
warn('Could not open editor')
|
|
|
return False
|
|
|
return True
|
|
|
|
|
|
# Run !system commands directly, not through pipes, so terminal programs
|
|
|
# work correctly.
|
|
|
system = InteractiveShell.system_raw
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
TerminalInteractiveShell.instance().interact()
|
|
|
|
