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# Copyright 2000-2008 Michael Hudson-Doyle <micahel@gmail.com>
# Armin Rigo
#
# All Rights Reserved
#
#
# 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 . import curses
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() -> dict[bytes, str]:
"""
Generates a dictionary mapping terminal keycodes to human-readable names.
"""
keycodes = {}
for key, terminal_code in TERMINAL_KEYNAMES.items():
keycode = curses.tigetstr(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) -> None:
keycodes = get_terminal_keycodes()
if os.isatty(fd):
backspace = tcgetattr(fd)[6][VERASE]
keycodes[backspace] = "backspace"
BaseEventQueue.__init__(self, encoding, keycodes)
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