cpython/Lib/_pyrepl/unix_eventqueue.py at 3.15 · python/cpython · GitHub

Repository navigation

History

# Armin Rigo

# Permission to use, copy, modify, and distribute this software and

# its documentation for any purpose is hereby granted without fee,

# provided that the above copyright notice appear in all copies and

# that both that copyright notice and this permission notice appear in

# supporting documentation.

# THE AUTHOR MICHAEL HUDSON DISCLAIMS ALL WARRANTIES WITH REGARD TO

# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY

# AND FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,

# INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER

# RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF

# CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN

# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

from .terminfo import TermInfo

from .trace import trace

from .base_eventqueue import BaseEventQueue

from termios import tcgetattr, VERASE

import os

# Mapping of human-readable key names to their terminal-specific codes

TERMINAL_KEYNAMES = {

"delete": "kdch1",

"down": "kcud1",

"end": "kend",

"enter": "kent",

"home": "khome",

"insert": "kich1",

"left": "kcub1",

"page down": "knp",

"page up": "kpp",

"right": "kcuf1",

"up": "kcuu1",

}

# Function keys F1-F20 mapping

TERMINAL_KEYNAMES.update(("f%d" % i, "kf%d" % i) for i in range(1, 21))

# Known CTRL-arrow keycodes

CTRL_ARROW_KEYCODES= {

# for xterm, gnome-terminal, xfce terminal, etc.

b'\033[1;5D': 'ctrl left',

b'\033[1;5C': 'ctrl right',

# for rxvt

b'\033Od': 'ctrl left',

b'\033Oc': 'ctrl right',

}

def get_terminal_keycodes(ti: TermInfo) -> dict[bytes, str]:

"""

Generates a dictionary mapping terminal keycodes to human-readable names.

"""

keycodes = {}

for key, terminal_code in TERMINAL_KEYNAMES.items():

keycode = ti.get(terminal_code)

trace('key {key} tiname {terminal_code} keycode {keycode!r}', **locals())

if keycode:

keycodes[keycode] = key

keycodes.update(CTRL_ARROW_KEYCODES)

return keycodes

class EventQueue(BaseEventQueue):

def __init__(self, fd: int, encoding: str, ti: TermInfo) -> None:

keycodes = get_terminal_keycodes(ti)

if os.isatty(fd):

backspace = tcgetattr(fd)[6][VERASE]

keycodes[backspace] = "backspace"

BaseEventQueue.__init__(self, encoding, keycodes)

cpython/Lib/_pyrepl/unix_eventqueue.py at 3.15 · python/cpython · GitHub

Repository navigation

Expand file tree

Breadcrumbs

unix_eventqueue.py

Latest commit

History

Breadcrumbs

unix_eventqueue.py

File metadata and controls