def _feed_cli_with_input(text, editing_mode=EditingMode.EMACS, clipboard=None,
history=None):
"""
Create a CommandLineInterface, feed it with the given user input and return
the CLI object.
This returns a (result, CLI) tuple.
"""
# If the given text doesn't end with a newline, the interface won't finish.
assert text.endswith('\n')
loop = PosixEventLoop()
try:
inp = PipeInput()
inp.send_text(text)
cli = CommandLineInterface(
application=Application(
buffer=Buffer(accept_action=AcceptAction.RETURN_DOCUMENT,
history=history),
editing_mode=editing_mode,
clipboard=clipboard or InMemoryClipboard(),
key_bindings_registry=KeyBindingManager.for_prompt().registry,
),
eventloop=loop,
input=inp,
output=DummyOutput())
result = cli.run()
return result, cli
finally:
loop.close()
inp.close()
def feed_app_with_input(type, message, text, **kwargs):
"""
Create a CommandLineInterface, feed it with the given user input and return
the CLI object.
This returns a (result, CLI) tuple.
note: this only works if you import your prompt and then this function!!
"""
# If the given text doesn't end with a newline, the interface won't finish.
assert text.endswith('\n')
application = getattr(prompts, type).question(message, **kwargs)
loop = PosixEventLoop()
try:
inp = PipeInput()
inp.send_text(text)
cli = CommandLineInterface(
application=application,
eventloop=loop,
input=inp,
output=DummyOutput())
result = cli.run()
return result, cli
finally:
loop.close()
inp.close()
def _feed_cli_with_input(text,
editing_mode=EditingMode.EMACS,
clipboard=None,
history=None):
"""
Create a CommandLineInterface, feed it with the given user input and return
the CLI object.
This returns a (result, CLI) tuple.
"""
# If the given text doesn't end with a newline, the interface won't finish.
assert text.endswith('\n')
from prompt_toolkit.eventloop.posix import PosixEventLoop as EventLoop
loop = EventLoop()
try:
inp = PipeInput()
inp.send_text(text)
cli = CommandLineInterface(application=Application(
buffer=Buffer(accept_action=AcceptAction.RETURN_DOCUMENT,
history=history),
editing_mode=editing_mode,
clipboard=clipboard or InMemoryClipboard(),
key_bindings_registry=KeyBindingManager.for_prompt().registry,
),
eventloop=loop,
input=inp,
output=DummyOutput())
result = cli.run()
return result, cli
finally:
loop.close()
inp.close()
def __init__(self, source_file=None, startup_command=None):
self.arrangement = Arrangement()
self.layout_manager = LayoutManager(self)
self._client_states = weakref.WeakKeyDictionary(
) # Mapping from CLI to ClientState.
# Options
self.enable_mouse_support = True
self.enable_status = True
self.enable_pane_status = False
self.enable_bell = True
self.remain_on_exit = False
self.status_keys_vi_mode = False
self.mode_keys_vi_mode = False
self.history_limit = 2000
self.status_interval = 4
self.default_terminal = 'xterm-256color'
self.status_left = '[#S] '
self.status_left_length = 20
self.status_right = ' %H:%M %d-%b-%y '
self.status_right_length = 20
self.window_status_current_format = '#I:#W#F'
self.window_status_format = '#I:#W#F'
self.session_name = '0'
self.status_justify = Justify.LEFT
self.default_shell = get_default_shell()
self.options = ALL_OPTIONS
self.window_options = ALL_WINDOW_OPTIONS
# When no panes are available.
self.original_cwd = os.getcwd()
self.display_pane_numbers = False
#: List of clients.
self._runs_standalone = False
self.connections = []
self.clis = {} # Mapping from Connection to CommandLineInterface.
self._startup_done = False
self.source_file = source_file
self.startup_command = startup_command
# Keep track of all the panes, by ID. (For quick lookup.)
self.panes_by_id = weakref.WeakValueDictionary()
# Socket information.
self.socket = None
self.socket_name = None
# Create eventloop.
self.eventloop = PosixEventLoop()
# Key bindings manager.
self.key_bindings_manager = KeyBindingsManager(self)
self.style = PymuxStyle()
def __init__(self, source_file=None, startup_command=None):
self.arrangement = Arrangement()
self.layout_manager = LayoutManager(self)
self._client_states = weakref.WeakKeyDictionary() # Mapping from CLI to ClientState.
# Options
self.enable_mouse_support = True
self.enable_status = True
self.enable_pane_status = False
self.enable_bell = True
self.remain_on_exit = False
self.status_keys_vi_mode = False
self.mode_keys_vi_mode = False
self.history_limit = 2000
self.status_interval = 4
self.default_terminal = 'xterm-256color'
self.status_left = '[#S] '
self.status_left_length = 20
self.status_right = ' %H:%M %d-%b-%y '
self.status_right_length = 20
self.window_status_current_format = '#I:#W#F'
self.window_status_format = '#I:#W#F'
self.session_name = '0'
self.status_justify = Justify.LEFT
self.default_shell = get_default_shell()
self.options = ALL_OPTIONS
self.window_options = ALL_WINDOW_OPTIONS
# When no panes are available.
self.original_cwd = os.getcwd()
self.display_pane_numbers = False
#: List of clients.
self._runs_standalone = False
self.connections = []
self.clis = {} # Mapping from Connection to CommandLineInterface.
self._startup_done = False
self.source_file = source_file
self.startup_command = startup_command
# Keep track of all the panes, by ID. (For quick lookup.)
self.panes_by_id = weakref.WeakValueDictionary()
# Socket information.
self.socket = None
self.socket_name = None
# Create eventloop.
self.eventloop = PosixEventLoop()
# Key bindings manager.
self.key_bindings_manager = KeyBindingsManager(self)
self.style = PymuxStyle()
def _feed_cli_with_input(text, editing_mode=EditingMode.EMACS):
"""
Create a CommandLineInterface, feed it with the given user input and return
the CLI object.
This returns a (result, CLI) tuple.
"""
# If the given text doesn't end with a newline, the interface won't finish.
assert text.endswith('\n')
loop = PosixEventLoop()
try:
inp = PipeInput()
inp.send_text(text)
cli = CommandLineInterface(
application=Application(editing_mode=editing_mode),
eventloop=loop,
input=inp,
output=DummyOutput())
result = cli.run()
return result, cli
finally:
loop.close()
inp.close()
def run():
if not PTK3:
if is_windows():
from prompt_toolkit.eventloop.win32 import Win32EventLoop
loop = Win32EventLoop()
else:
from prompt_toolkit.eventloop.posix import PosixEventLoop
from prompt_toolkit.eventloop.select import SelectSelector
loop = PosixEventLoop(selector=SelectSelector)
set_event_loop(loop)
if not sys.stdin.isatty():
pager = Pager.from_pipe()
pager.run()
else:
parser = argparse.ArgumentParser(
description='Browse through a text file.')
parser.add_argument('filename',
metavar='filename',
nargs='+',
help='The file to be displayed.')
parser.add_argument('--vi',
help='Prefer Vi key bindings.',
action='store_true')
parser.add_argument('--emacs',
help='Prefer Emacs key bindings.',
action='store_true')
args = parser.parse_args()
# Determine input mode.
vi_mode = 'vi' in os.environ.get('EDITOR', '').lower()
if args.vi: vi_mode = True
if args.emacs: vi_mode = False
pager = Pager(vi_mode=vi_mode)
# Open files.
for filename in args.filename:
# When a filename is given, take a lexer from that filename.
lexer = PygmentsLexer.from_filename(filename,
sync_from_start=False)
pager.add_source(FileSource(filename, lexer=lexer))
# Run UI.
pager.run()
class Pymux(object):
"""
The main Pymux application class.
Usage:
p = Pymux()
p.listen_on_socket()
p.run_server()
Or:
p = Pymux()
p.run_standalone()
"""
def __init__(self, source_file=None, startup_command=None):
self.arrangement = Arrangement()
self.layout_manager = LayoutManager(self)
self._client_states = weakref.WeakKeyDictionary(
) # Mapping from CLI to ClientState.
# Options
self.enable_mouse_support = True
self.enable_status = True
self.enable_bell = True
self.remain_on_exit = False
self.status_keys_vi_mode = False
self.mode_keys_vi_mode = False
self.history_limit = 2000
self.default_terminal = 'xterm-256color'
self.status_left = '[#S] '
self.status_left_length = 20
self.status_right = ' %H:%M %d-%b-%y '
self.status_right_length = 20
self.window_status_current_format = '#I:#W#F'
self.window_status_format = '#I:#W#F'
self.session_name = '0'
self.status_justify = Justify.LEFT
self.default_shell = get_default_shell()
self.options = ALL_OPTIONS
self.window_options = ALL_WINDOW_OPTIONS
# When no panes are available.
self.original_cwd = os.getcwd()
self.display_pane_numbers = False
#: List of clients.
self._runs_standalone = False
self.connections = []
self.clis = {} # Mapping from Connection to CommandLineInterface.
self._startup_done = False
self.source_file = source_file
self.startup_command = startup_command
# Keep track of all the panes, by ID. (For quick lookup.)
self.panes_by_id = weakref.WeakValueDictionary()
# Socket information.
self.socket = None
self.socket_name = None
# Create eventloop.
self.eventloop = PosixEventLoop()
# Key bindings manager.
self.key_bindings_manager = KeyBindingsManager(self)
self.style = PymuxStyle()
def get_client_state(self, cli):
"""
Return the ClientState instance for this CommandLineInterface.
"""
try:
return self._client_states[cli]
except KeyError:
s = ClientState()
self._client_states[cli] = s
return s
def get_title(self, cli):
"""
The title to be displayed in the titlebar of the terminal.
"""
w = self.arrangement.get_active_window(cli)
if w and w.active_process:
title = w.active_process.screen.title
else:
title = ''
if title:
return '%s - Pymux' % (title, )
else:
return 'Pymux'
def get_window_size(self, cli):
"""
Get the size to be used for the DynamicBody.
This will be the smallest size of all clients.
"""
get_active_window = self.arrangement.get_active_window
active_window = get_active_window(cli)
# Get connections watching the same window.
connections = [
c for c in self.connections
if c.cli and get_active_window(c.cli) == active_window
]
rows = [c.size.rows for c in connections]
columns = [c.size.columns for c in connections]
if self._runs_standalone:
r, c = _get_size(sys.stdout.fileno())
rows.append(r)
columns.append(c)
if rows and columns:
return Size(rows=min(rows) - (1 if self.enable_status else 0),
columns=min(columns))
else:
return Size(rows=20, columns=80)
def _create_pane(self, window=None, command=None, start_directory=None):
"""
Create a new :class:`pymux.arrangement.Pane` instance. (Don't put it in
a window yet.)
:param window: If a window is given, take the CWD of the current
process of that window as the start path for this pane.
:param command: If given, run this command instead of `self.default_shell`.
:param start_directory: If given, use this as the CWD.
"""
assert window is None or isinstance(window, Window)
assert command is None or isinstance(command, six.text_type)
assert start_directory is None or isinstance(start_directory,
six.text_type)
def done_callback():
" When the process finishes. "
if not self.remain_on_exit:
# Remove pane from layout.
self.arrangement.remove_pane(pane)
# No panes left? -> Quit.
if not self.arrangement.has_panes:
self.eventloop.stop()
self.invalidate()
def bell():
" Sound bell on all clients. "
if self.enable_bell:
for c in self.clis.values():
c.output.bell()
# Start directory.
if start_directory:
path = start_directory
elif window and window.active_process:
# When the path of the active process is known,
# start the new process at the same location.
path = window.active_process.get_cwd()
else:
path = None
def before_exec():
" Called in the process fork (in the child process). "
# Go to this directory.
try:
os.chdir(path or self.original_cwd)
except OSError:
pass # No such file or directory.
# Set terminal variable. (We emulate xterm.)
os.environ['TERM'] = self.default_terminal
# Make sure to set the PYMUX environment variable.
if self.socket_name:
os.environ['PYMUX'] = '%s,%i' % (self.socket_name,
pane.pane_id)
if command:
command = command.split()
else:
command = [self.default_shell]
# Create process and pane.
def has_priority():
return self.arrangement.pane_has_priority(pane)
process = Process.from_command(self.eventloop,
self.invalidate,
command,
done_callback,
bell_func=bell,
before_exec_func=before_exec,
has_priority=has_priority)
pane = Pane(process)
# Keep track of panes. This is a WeakKeyDictionary, we only add, but
# don't remove.
self.panes_by_id[pane.pane_id] = pane
logger.info('Created process %r.', command)
process.start()
return pane
def invalidate(self):
" Invalidate the UI for all clients. "
for c in self.clis.values():
c.invalidate()
def create_window(self,
cli=None,
command=None,
start_directory=None,
name=None):
"""
Create a new :class:`pymux.arrangement.Window` in the arrangement.
:param cli: If been given, this window will be focussed for that client.
"""
assert cli is None or isinstance(cli, CommandLineInterface)
assert command is None or isinstance(command, six.text_type)
assert start_directory is None or isinstance(start_directory,
six.text_type)
pane = self._create_pane(None,
command,
start_directory=start_directory)
self.arrangement.create_window(cli, pane, name=name)
self.invalidate()
def add_process(self,
cli,
command=None,
vsplit=False,
start_directory=None):
"""
Add a new process to the current window. (vsplit/hsplit).
"""
assert isinstance(cli, CommandLineInterface)
assert command is None or isinstance(command, six.text_type)
assert start_directory is None or isinstance(start_directory,
six.text_type)
window = self.arrangement.get_active_window(cli)
pane = self._create_pane(window,
command,
start_directory=start_directory)
window.add_pane(pane, vsplit=vsplit)
self.invalidate()
def kill_pane(self, pane):
"""
Kill the given pane, and remove it from the arrangement.
"""
assert isinstance(pane, Pane)
# Send kill signal.
if not pane.process.is_terminated:
pane.process.send_signal(signal.SIGKILL)
# Remove from layout.
self.arrangement.remove_pane(pane)
# No panes left? -> Quit.
if not self.arrangement.has_panes:
self.eventloop.stop()
def leave_command_mode(self, cli, append_to_history=False):
"""
Leave the command/prompt mode.
"""
cli.buffers[COMMAND].reset(append_to_history=append_to_history)
cli.buffers[PROMPT].reset(append_to_history=True)
client_state = self.get_client_state(cli)
client_state.command_mode = False
client_state.prompt_command = ''
client_state.confirm_command = ''
def handle_command(self, cli, command):
"""
Handle command from the command line.
"""
handle_command(self, cli, command)
def show_message(self, cli, message):
"""
Set a warning message. This will be shown at the bottom until a key has
been pressed.
:param cli: CommandLineInterface instance. (The client.)
:param message: String.
"""
self.get_client_state(cli).message = message
def create_cli(self, connection, output, input=None):
"""
Create `CommandLineInterface` instance for this connection.
"""
def get_title():
return self.get_title(cli)
def on_focus_changed():
""" When the focus changes to a read/write buffer, make sure to go
to insert mode. This happens when the ViState was set to NAVIGATION
in the copy buffer. """
vi_state = self.key_bindings_manager.pt_key_bindings_manager.get_vi_state(
cli)
if cli.current_buffer.read_only():
vi_state.input_mode = InputMode.NAVIGATION
else:
vi_state.input_mode = InputMode.INSERT
application = Application(
layout=self.layout_manager.layout,
key_bindings_registry=self.key_bindings_manager.registry,
buffers=_BufferMapping(self),
mouse_support=Condition(lambda cli: self.enable_mouse_support),
use_alternate_screen=True,
style=self.style,
get_title=get_title)
cli = CommandLineInterface(application=application,
output=output,
input=input,
eventloop=self.eventloop)
# Set render postpone time. (.1 instead of 0).
# This small change ensures that if for a split second a process
# outputs a lot of information, we don't give the highest priority to
# rendering output. (Nobody reads that fast in real-time.)
cli.max_render_postpone_time = .1 # Second.
# Hide message when a key has been pressed.
def key_pressed():
self.get_client_state(cli).message = None
cli.input_processor.beforeKeyPress += key_pressed
cli._is_running = True
self.clis[connection] = cli
# Redraw all CLIs. (Adding a new client could mean that the others
# change size, so everything has to be redrawn.)
self.invalidate()
cli.on_invalidate += lambda: self.invalidate()
# Handle start-up comands.
# (Does initial key bindings.)
if not self._startup_done:
self._startup_done = True
# Execute default config.
for cmd in STARTUP_COMMANDS.splitlines():
self.handle_command(cli, cmd)
# Source the given file.
if self.source_file:
call_command_handler('source-file', self, cli,
[self.source_file])
# Make sure that there is one window created.
self.create_window(cli, command=self.startup_command)
return cli
def get_connection_for_cli(self, cli):
"""
Return the `CommandLineInterface` instance for this connection, if any.
`None` otherwise.
"""
for connection, c in self.clis.items():
if c == cli:
return connection
def detach_client(self, cli):
"""
Detach the client that belongs to this CLI.
"""
connection = self.get_connection_for_cli(cli)
if connection is not None:
connection.detach_and_close()
# Redraw all clients -> Maybe their size has to change.
self.invalidate()
def listen_on_socket(self, socket_name=None):
"""
Listen for clients on a Unix socket.
Returns the socket name.
"""
if self.socket is None:
self.socket_name, self.socket = bind_socket(socket_name)
self.socket.listen(0)
self.eventloop.add_reader(self.socket.fileno(),
self._socket_accept)
# Set session_name according to socket name.
if '.' in self.socket_name:
self.session_name = self.socket_name.rsplit('.')[-1]
logger.info('Listening on %r.' % self.socket_name)
return self.socket_name
def _socket_accept(self):
"""
Accept connection from client.
"""
logger.info('Client attached.')
connection, client_address = self.socket.accept()
# Note: We don't have to put this socket in non blocking mode.
# This can cause crashes when sending big packets on OS X.
connection = ServerConnection(self, connection, client_address)
self.connections.append(connection)
def run_server(self):
# Ignore keyboard. (When people run "pymux server" and press Ctrl-C.)
# Pymux has to be terminated by termining all the processes running in
# its panes.
def handle_sigint(*a):
print('Ignoring keyboard interrupt.')
signal.signal(signal.SIGINT, handle_sigint)
# Run eventloop.
# XXX: Both the PipeInput and DummyCallbacks are not used.
# This is a workaround to run the PosixEventLoop continuously
# without having a CommandLineInterface instance.
# A better API in prompt_toolkit is desired.
try:
self.eventloop.run(PipeInput(), DummyCallbacks())
except:
# When something bad happens, always dump the traceback.
# (Otherwise, when running as a daemon, and stdout/stderr are not
# available, it's hard to see what went wrong.)
fd, path = tempfile.mkstemp(prefix='pymux.crash-')
logger.fatal(
'Pymux has crashed, dumping traceback to {0}'.format(path))
os.write(fd, traceback.format_exc().encode('utf-8'))
os.close(fd)
raise
# Clean up socket.
os.remove(self.socket_name)
def run_standalone(self, true_color=False):
"""
Run pymux standalone, rather than using a client/server architecture.
This is mainly useful for debugging.
"""
self._runs_standalone = True
cli = self.create_cli(connection=None,
output=Vt100_Output.from_pty(
sys.stdout, true_color=true_color))
cli._is_running = False
cli.run()
class Pymux(object):
"""
The main Pymux application class.
Usage:
p = Pymux()
p.listen_on_socket()
p.run_server()
Or:
p = Pymux()
p.run_standalone()
"""
def __init__(self, source_file=None, startup_command=None):
self.arrangement = Arrangement()
self.layout_manager = LayoutManager(self)
self._client_states = weakref.WeakKeyDictionary() # Mapping from CLI to ClientState.
# Options
self.enable_mouse_support = True
self.enable_status = True
self.enable_pane_status = False
self.enable_bell = True
self.remain_on_exit = False
self.status_keys_vi_mode = False
self.mode_keys_vi_mode = False
self.history_limit = 2000
self.status_interval = 4
self.default_terminal = 'xterm-256color'
self.status_left = '[#S] '
self.status_left_length = 20
self.status_right = ' %H:%M %d-%b-%y '
self.status_right_length = 20
self.window_status_current_format = '#I:#W#F'
self.window_status_format = '#I:#W#F'
self.session_name = '0'
self.status_justify = Justify.LEFT
self.default_shell = get_default_shell()
self.options = ALL_OPTIONS
self.window_options = ALL_WINDOW_OPTIONS
# When no panes are available.
self.original_cwd = os.getcwd()
self.display_pane_numbers = False
#: List of clients.
self._runs_standalone = False
self.connections = []
self.clis = {} # Mapping from Connection to CommandLineInterface.
self._startup_done = False
self.source_file = source_file
self.startup_command = startup_command
# Keep track of all the panes, by ID. (For quick lookup.)
self.panes_by_id = weakref.WeakValueDictionary()
# Socket information.
self.socket = None
self.socket_name = None
# Create eventloop.
self.eventloop = PosixEventLoop()
# Key bindings manager.
self.key_bindings_manager = KeyBindingsManager(self)
self.style = PymuxStyle()
def _start_auto_refresh_thread(self):
"""
Start the background thread that auto refreshes all clients according to
`self.status_interval`.
"""
def run():
while True:
time.sleep(self.status_interval)
self.invalidate()
t = threading.Thread(target=run)
t.daemon = True
t.start()
def get_client_state(self, cli):
"""
Return the ClientState instance for this CommandLineInterface.
"""
try:
return self._client_states[cli]
except KeyError:
s = ClientState()
self._client_states[cli] = s
return s
def get_title(self, cli):
"""
The title to be displayed in the titlebar of the terminal.
"""
w = self.arrangement.get_active_window(cli)
if w and w.active_process:
title = w.active_process.screen.title
else:
title = ''
if title:
return '%s - Pymux' % (title, )
else:
return 'Pymux'
def get_window_size(self, cli):
"""
Get the size to be used for the DynamicBody.
This will be the smallest size of all clients.
"""
get_active_window = self.arrangement.get_active_window
active_window = get_active_window(cli)
# Get connections watching the same window.
connections = [c for c in self.connections if
c.cli and get_active_window(c.cli) == active_window]
rows = [c.size.rows for c in connections]
columns = [c.size.columns for c in connections]
if self._runs_standalone:
r, c = _get_size(sys.stdout.fileno())
rows.append(r)
columns.append(c)
if rows and columns:
return Size(rows=min(rows) - (1 if self.enable_status else 0),
columns=min(columns))
else:
return Size(rows=20, columns=80)
def _create_pane(self, window=None, command=None, start_directory=None):
"""
Create a new :class:`pymux.arrangement.Pane` instance. (Don't put it in
a window yet.)
:param window: If a window is given, take the CWD of the current
process of that window as the start path for this pane.
:param command: If given, run this command instead of `self.default_shell`.
:param start_directory: If given, use this as the CWD.
"""
assert window is None or isinstance(window, Window)
assert command is None or isinstance(command, six.text_type)
assert start_directory is None or isinstance(start_directory, six.text_type)
def done_callback():
" When the process finishes. "
if not self.remain_on_exit:
# Remove pane from layout.
self.arrangement.remove_pane(pane)
# No panes left? -> Quit.
if not self.arrangement.has_panes:
self.eventloop.stop()
self.invalidate()
def bell():
" Sound bell on all clients. "
if self.enable_bell:
for c in self.clis.values():
c.output.bell()
# Start directory.
if start_directory:
path = start_directory
elif window and window.active_process:
# When the path of the active process is known,
# start the new process at the same location.
path = window.active_process.get_cwd()
else:
path = None
def before_exec():
" Called in the process fork (in the child process). "
# Go to this directory.
try:
os.chdir(path or self.original_cwd)
except OSError:
pass # No such file or directory.
# Set terminal variable. (We emulate xterm.)
os.environ['TERM'] = self.default_terminal
# Make sure to set the PYMUX environment variable.
if self.socket_name:
os.environ['PYMUX'] = '%s,%i' % (
self.socket_name, pane.pane_id)
if command:
command = command.split()
else:
command = [self.default_shell]
# Create process and pane.
def has_priority():
return self.arrangement.pane_has_priority(pane)
process = Process.from_command(
self.eventloop, self.invalidate, command, done_callback,
bell_func=bell,
before_exec_func=before_exec,
has_priority=has_priority)
pane = Pane(process)
# Keep track of panes. This is a WeakKeyDictionary, we only add, but
# don't remove.
self.panes_by_id[pane.pane_id] = pane
logger.info('Created process %r.', command)
process.start()
return pane
def invalidate(self):
" Invalidate the UI for all clients. "
for c in self.clis.values():
c.invalidate()
def create_window(self, cli=None, command=None, start_directory=None, name=None):
"""
Create a new :class:`pymux.arrangement.Window` in the arrangement.
:param cli: If been given, this window will be focussed for that client.
"""
assert cli is None or isinstance(cli, CommandLineInterface)
assert command is None or isinstance(command, six.text_type)
assert start_directory is None or isinstance(start_directory, six.text_type)
pane = self._create_pane(None, command, start_directory=start_directory)
self.arrangement.create_window(cli, pane, name=name)
self.invalidate()
def add_process(self, cli, command=None, vsplit=False, start_directory=None):
"""
Add a new process to the current window. (vsplit/hsplit).
"""
assert isinstance(cli, CommandLineInterface)
assert command is None or isinstance(command, six.text_type)
assert start_directory is None or isinstance(start_directory, six.text_type)
window = self.arrangement.get_active_window(cli)
pane = self._create_pane(window, command, start_directory=start_directory)
window.add_pane(pane, vsplit=vsplit)
self.invalidate()
def kill_pane(self, pane):
"""
Kill the given pane, and remove it from the arrangement.
"""
assert isinstance(pane, Pane)
# Send kill signal.
if not pane.process.is_terminated:
pane.process.send_signal(signal.SIGKILL)
# Remove from layout.
self.arrangement.remove_pane(pane)
# No panes left? -> Quit.
if not self.arrangement.has_panes:
self.eventloop.stop()
def leave_command_mode(self, cli, append_to_history=False):
"""
Leave the command/prompt mode.
"""
cli.buffers[COMMAND].reset(append_to_history=append_to_history)
cli.buffers[PROMPT].reset(append_to_history=True)
client_state = self.get_client_state(cli)
client_state.command_mode = False
client_state.prompt_command = ''
client_state.confirm_command = ''
def handle_command(self, cli, command):
"""
Handle command from the command line.
"""
handle_command(self, cli, command)
def show_message(self, cli, message):
"""
Set a warning message. This will be shown at the bottom until a key has
been pressed.
:param cli: CommandLineInterface instance. (The client.)
:param message: String.
"""
self.get_client_state(cli).message = message
def create_cli(self, connection, output, input=None):
"""
Create `CommandLineInterface` instance for this connection.
"""
def get_title():
return self.get_title(cli)
def on_focus_changed():
""" When the focus changes to a read/write buffer, make sure to go
to insert mode. This happens when the ViState was set to NAVIGATION
in the copy buffer. """
vi_state = cli.vi_state
if cli.current_buffer.read_only():
vi_state.input_mode = InputMode.NAVIGATION
else:
vi_state.input_mode = InputMode.INSERT
application = Application(
layout=self.layout_manager.layout,
key_bindings_registry=self.key_bindings_manager.registry,
buffers=_BufferMapping(self),
mouse_support=Condition(lambda cli: self.enable_mouse_support),
use_alternate_screen=True,
style=self.style,
get_title=get_title,
on_invalidate=(lambda cli: self.invalidate()))
cli = CommandLineInterface(
application=application,
output=output,
input=input,
eventloop=self.eventloop)
# Synchronize the Vi state with the CLI object.
# (This is stored in the current class, but expected to be in the
# CommandLineInterface.)
def sync_vi_state(_):
client_state = self.get_client_state(cli)
VI = EditingMode.VI
EMACS = EditingMode.EMACS
if (client_state.confirm_text or client_state.prompt_command or
client_state.command_mode):
cli.editing_mode = VI if self.status_keys_vi_mode else EMACS
else:
cli.editing_mode = VI if self.mode_keys_vi_mode else EMACS
cli.input_processor.beforeKeyPress += sync_vi_state
cli.input_processor.afterKeyPress += sync_vi_state
# Set render postpone time. (.1 instead of 0).
# This small change ensures that if for a split second a process
# outputs a lot of information, we don't give the highest priority to
# rendering output. (Nobody reads that fast in real-time.)
cli.max_render_postpone_time = .1 # Second.
# Hide message when a key has been pressed.
def key_pressed(_):
self.get_client_state(cli).message = None
cli.input_processor.beforeKeyPress += key_pressed
cli._is_running = True
self.clis[connection] = cli
# Redraw all CLIs. (Adding a new client could mean that the others
# change size, so everything has to be redrawn.)
self.invalidate()
# Handle start-up comands.
# (Does initial key bindings.)
if not self._startup_done:
self._startup_done = True
# Execute default config.
for cmd in STARTUP_COMMANDS.splitlines():
self.handle_command(cli, cmd)
# Source the given file.
if self.source_file:
call_command_handler('source-file', self, cli, [self.source_file])
# Make sure that there is one window created.
self.create_window(cli, command=self.startup_command)
return cli
def get_connection_for_cli(self, cli):
"""
Return the `CommandLineInterface` instance for this connection, if any.
`None` otherwise.
"""
for connection, c in self.clis.items():
if c == cli:
return connection
def detach_client(self, cli):
"""
Detach the client that belongs to this CLI.
"""
connection = self.get_connection_for_cli(cli)
if connection is not None:
connection.detach_and_close()
# Redraw all clients -> Maybe their size has to change.
self.invalidate()
def listen_on_socket(self, socket_name=None):
"""
Listen for clients on a Unix socket.
Returns the socket name.
"""
if self.socket is None:
# Py2 uses 0027 and Py3 uses 0o027, but both know
# how to create the right value from the string '0027'.
old_umask = os.umask(int('0027', 8))
self.socket_name, self.socket = bind_socket(socket_name)
_ = os.umask(old_umask)
self.socket.listen(0)
self.eventloop.add_reader(self.socket.fileno(), self._socket_accept)
# Set session_name according to socket name.
if '.' in self.socket_name:
self.session_name = self.socket_name.rpartition('.')[-1]
logger.info('Listening on %r.' % self.socket_name)
return self.socket_name
def _socket_accept(self):
"""
Accept connection from client.
"""
logger.info('Client attached.')
connection, client_address = self.socket.accept()
# Note: We don't have to put this socket in non blocking mode.
# This can cause crashes when sending big packets on OS X.
connection = ServerConnection(self, connection, client_address)
self.connections.append(connection)
def run_server(self):
# Ignore keyboard. (When people run "pymux server" and press Ctrl-C.)
# Pymux has to be terminated by termining all the processes running in
# its panes.
def handle_sigint(*a):
print('Ignoring keyboard interrupt.')
signal.signal(signal.SIGINT, handle_sigint)
# Start background threads.
self._start_auto_refresh_thread()
# Run eventloop.
# XXX: Both the PipeInput and DummyCallbacks are not used.
# This is a workaround to run the PosixEventLoop continuously
# without having a CommandLineInterface instance.
# A better API in prompt_toolkit is desired.
try:
self.eventloop.run(
PipeInput(), DummyCallbacks())
except:
# When something bad happens, always dump the traceback.
# (Otherwise, when running as a daemon, and stdout/stderr are not
# available, it's hard to see what went wrong.)
fd, path = tempfile.mkstemp(prefix='pymux.crash-')
logger.fatal(
'Pymux has crashed, dumping traceback to {0}'.format(path))
os.write(fd, traceback.format_exc().encode('utf-8'))
os.close(fd)
raise
finally:
# Clean up socket.
os.remove(self.socket_name)
def run_standalone(self, true_color=False, ansi_colors_only=False):
"""
Run pymux standalone, rather than using a client/server architecture.
This is mainly useful for debugging.
"""
self._runs_standalone = True
self._start_auto_refresh_thread()
cli = self.create_cli(
connection=None,
output=Vt100_Output.from_pty(
sys.stdout, true_color=true_color, ansi_colors_only=ansi_colors_only))
cli._is_running = False
cli.run()
