virt-manager/virtinst/hostkeymap.py
Cole Robinson f107e39989 Switch to more traditional logging structure
Init a shared log instance in virtinst/logger.py, and use that
throughout the code base, so we aren't calling directly into
'logging'. This helps protect our logging output from being
cluttered with other library output, as happens with some
'requests' usage
2019-06-17 00:12:31 -04:00

201 lines
4.9 KiB
Python

#
# Copyright 2006-2013 Red Hat, Inc.
#
# This work is licensed under the GNU GPLv2 or later.
# See the COPYING file in the top-level directory.
#
import os
import re
from .logger import log
_ETC_VCONSOLE = "/etc/vconsole.conf"
_KEYBOARD_DIR = "/etc/sysconfig/keyboard"
_XORG_CONF = "/etc/X11/xorg.conf"
_CONSOLE_SETUP_CONF = "/etc/default/console-setup"
_KEYBOARD_DEFAULT = "/etc/default/keyboard"
def _find_xkblayout(f):
"""
Reads a keyboard layout from a file that defines an XKBLAYOUT
variable, e.g. /etc/default/{keyboard,console-setup}.
The format of these files is such that they can be 'sourced'
in a shell script.
Used for both /etc/default/keyboard and /etc/default/console-setup.
The former is used by Debian 6.0 (Squeeze) and later. The latter is
used by older versions of Debian, and Ubuntu.
"""
kt = None
keymap_re = re.compile(r'\s*XKBLAYOUT="(?P<kt>[a-z-]+)"')
for line in f:
m = keymap_re.match(line)
if m:
kt = m.group('kt')
break
return kt
def _xorg_keymap(f):
"""
Look in /etc/X11/xorg.conf for the host machine's keymap, and attempt to
map it to a keymap supported by qemu
"""
kt = None
keymap_re = re.compile(r'\s*Option\s+"XkbLayout"\s+"(?P<kt>[a-z-]+)"')
for line in f:
m = keymap_re.match(line)
if m:
kt = m.group('kt')
break
return kt
def _sysconfig_keyboard(f):
kt = None
while 1:
s = f.readline()
if s == "":
break
s = s.strip()
if s.startswith("#"):
continue
if (re.search("KEYMAP", s) is not None or
re.search("KEYTABLE", s) is not None or
(re.search("KEYBOARD", s) is not None and
re.search("KEYBOARDTYPE", s) is None)):
if '"' in s:
delim = '"'
elif '=' in s:
delim = '='
else:
continue
kt = s.split(delim)[1].strip()
break
return kt
def _default_keymap():
"""
Look in various config files for the host machine's keymap, and attempt
to map it to a keymap supported by qemu
"""
# Set keymap to same as hosts
default = "en-us"
keymap = None
kt = None
if "VIRTINST_TEST_SUITE" in os.environ:
return default
for path, cb in [
(_ETC_VCONSOLE, _sysconfig_keyboard),
(_KEYBOARD_DIR, _sysconfig_keyboard),
(_XORG_CONF, _xorg_keymap),
(_KEYBOARD_DEFAULT, _find_xkblayout),
(_CONSOLE_SETUP_CONF, _find_xkblayout)]:
if not os.path.exists(path):
continue
try:
f = open(path, "r")
kt = cb(f)
f.close()
if kt:
log.debug("Found keymap=%s in %s", kt, path)
break
log.debug("Didn't find keymap in '%s'", path)
except Exception as e:
log.debug("Error parsing '%s': %s", path, str(e))
if kt is None:
log.debug("Did not parse any usable keymapping.")
return default
kt = kt.lower()
keymap = sanitize_keymap(kt)
if not keymap:
log.debug("Didn't match keymap '%s' in keytable!", kt)
return default
return keymap
##################
# Public helpers #
##################
# Host keytable entry : keymap name in qemu/xen
# Only use lower case entries: all lookups are .lower()'d
keytable = {
"ar": "ar",
"da": "da", "dk": "da",
"de": "de",
"de-ch": "de-ch",
"en-gb": "en-gb", "gb": "en-gb", "uk": "en-gb",
"en-us": "en-us", "us": "en-us",
"es": "es",
"et": "et",
"fi": "fi", "se_fi": "fi",
"fo": "fo",
"fr": "fr",
"fr-be": "fr-be", "be": "fr-be",
"fr-ca": "fr-ca", "ca": "fr-ca",
"fr-ch": "fr-ch", "fr_ch": "fr-ch",
"hr": "hr",
"hu": "hu",
"is": "is",
"it": "it",
"ja": "ja", "jp106": "ja", "jp": "ja",
"lt": "lt",
"lv": "lv",
"mk": "mk",
"nl": "nl",
"nl-be": "nl-be",
"no": "no",
"pl": "pl",
"pt": "pt",
"pt-br": "pt-br", "br": "pt-br", "br-abnt2": "pt-br",
"ru": "ru",
"sl": "sl",
"sv": "sv",
"th": "th",
"tr": "tr",
}
_cached_keymap = None
def default_keymap():
global _cached_keymap
if _cached_keymap is None:
_cached_keymap = _default_keymap()
return _cached_keymap
def sanitize_keymap(kt):
"""
Make sure the passed keymap roughly matches something in keytable
"""
if kt.lower() in keytable:
return keytable[kt]
# Try a more intelligent lookup: strip out all '-' and '_', sort
# the keytable keys putting the longest first, then compare
# by string prefix
clean_kt = kt.replace("-", "").replace("_", "")
sorted_keys = sorted(list(keytable.keys()), key=len)
for key in sorted_keys:
origkey = key
key = key.replace("-", "").replace("_", "")
if clean_kt.startswith(key):
return keytable[origkey]
return None