Commit e5fbceca authored by Marcus Folkesson's avatar Marcus Folkesson Committed by Anthony G. Basile

hwdb: add tool to parse hwdb grammer

Inherited from systemd project.
Signed-off-by: 's avatarMarcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: 's avatarAnthony G. Basile <blueness@gentoo.org>
parent 38e7d6cc
#!/usr/bin/env python3
# -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
# SPDX-License-Identifier: MIT
#
# This file is part of systemd. It is distrubuted under the MIT license, see
# below.
#
# Copyright 2016 Zbigniew Jędrzejewski-Szmek
#
# The MIT License (MIT)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import glob
import string
import sys
import os
try:
from pyparsing import (Word, White, Literal, ParserElement, Regex,
LineStart, LineEnd,
OneOrMore, Combine, Or, Optional, Suppress, Group,
nums, alphanums, printables,
stringEnd, pythonStyleComment, QuotedString,
ParseBaseException)
except ImportError:
print('pyparsing is not available')
sys.exit(77)
try:
from evdev.ecodes import ecodes
except ImportError:
ecodes = None
print('WARNING: evdev is not available')
try:
from functools import lru_cache
except ImportError:
# don't do caching on old python
lru_cache = lambda: (lambda f: f)
EOL = LineEnd().suppress()
EMPTYLINE = LineEnd()
COMMENTLINE = pythonStyleComment + EOL
INTEGER = Word(nums)
STRING = QuotedString('"')
REAL = Combine((INTEGER + Optional('.' + Optional(INTEGER))) ^ ('.' + INTEGER))
SIGNED_REAL = Combine(Optional(Word('-+')) + REAL)
UDEV_TAG = Word(string.ascii_uppercase, alphanums + '_')
TYPES = {'mouse': ('usb', 'bluetooth', 'ps2', '*'),
'evdev': ('name', 'atkbd', 'input'),
'id-input': ('modalias'),
'touchpad': ('i8042', 'rmi', 'bluetooth', 'usb'),
'joystick': ('i8042', 'rmi', 'bluetooth', 'usb'),
'keyboard': ('name', ),
'sensor': ('modalias', ),
}
@lru_cache()
def hwdb_grammar():
ParserElement.setDefaultWhitespaceChars('')
prefix = Or(category + ':' + Or(conn) + ':'
for category, conn in TYPES.items())
matchline = Combine(prefix + Word(printables + ' ' + '®')) + EOL
propertyline = (White(' ', exact=1).suppress() +
Combine(UDEV_TAG - '=' - Word(alphanums + '_=:@*.!-;, "') - Optional(pythonStyleComment)) +
EOL)
propertycomment = White(' ', exact=1) + pythonStyleComment + EOL
group = (OneOrMore(matchline('MATCHES*') ^ COMMENTLINE.suppress()) -
OneOrMore(propertyline('PROPERTIES*') ^ propertycomment.suppress()) -
(EMPTYLINE ^ stringEnd()).suppress())
commentgroup = OneOrMore(COMMENTLINE).suppress() - EMPTYLINE.suppress()
grammar = OneOrMore(group('GROUPS*') ^ commentgroup) + stringEnd()
return grammar
@lru_cache()
def property_grammar():
ParserElement.setDefaultWhitespaceChars(' ')
dpi_setting = (Optional('*')('DEFAULT') + INTEGER('DPI') + Suppress('@') + INTEGER('HZ'))('SETTINGS*')
mount_matrix_row = SIGNED_REAL + ',' + SIGNED_REAL + ',' + SIGNED_REAL
mount_matrix = (mount_matrix_row + ';' + mount_matrix_row + ';' + mount_matrix_row)('MOUNT_MATRIX')
props = (('MOUSE_DPI', Group(OneOrMore(dpi_setting))),
('MOUSE_WHEEL_CLICK_ANGLE', INTEGER),
('MOUSE_WHEEL_CLICK_ANGLE_HORIZONTAL', INTEGER),
('MOUSE_WHEEL_CLICK_COUNT', INTEGER),
('MOUSE_WHEEL_CLICK_COUNT_HORIZONTAL', INTEGER),
('ID_INPUT', Literal('1')),
('ID_INPUT_ACCELEROMETER', Literal('1')),
('ID_INPUT_JOYSTICK', Literal('1')),
('ID_INPUT_KEY', Literal('1')),
('ID_INPUT_KEYBOARD', Literal('1')),
('ID_INPUT_MOUSE', Literal('1')),
('ID_INPUT_POINTINGSTICK', Literal('1')),
('ID_INPUT_SWITCH', Literal('1')),
('ID_INPUT_TABLET', Literal('1')),
('ID_INPUT_TABLET_PAD', Literal('1')),
('ID_INPUT_TOUCHPAD', Literal('1')),
('ID_INPUT_TOUCHSCREEN', Literal('1')),
('ID_INPUT_TRACKBALL', Literal('1')),
('MOUSE_WHEEL_TILT_HORIZONTAL', Literal('1')),
('MOUSE_WHEEL_TILT_VERTICAL', Literal('1')),
('POINTINGSTICK_SENSITIVITY', INTEGER),
('POINTINGSTICK_CONST_ACCEL', REAL),
('ID_INPUT_JOYSTICK_INTEGRATION', Or(('internal', 'external'))),
('ID_INPUT_TOUCHPAD_INTEGRATION', Or(('internal', 'external'))),
('XKB_FIXED_LAYOUT', STRING),
('XKB_FIXED_VARIANT', STRING),
('KEYBOARD_LED_NUMLOCK', Literal('0')),
('KEYBOARD_LED_CAPSLOCK', Literal('0')),
('ACCEL_MOUNT_MATRIX', mount_matrix),
)
fixed_props = [Literal(name)('NAME') - Suppress('=') - val('VALUE')
for name, val in props]
kbd_props = [Regex(r'KEYBOARD_KEY_[0-9a-f]+')('NAME')
- Suppress('=') -
('!' ^ (Optional('!') - Word(alphanums + '_')))('VALUE')
]
abs_props = [Regex(r'EVDEV_ABS_[0-9a-f]{2}')('NAME')
- Suppress('=') -
Word(nums + ':')('VALUE')
]
grammar = Or(fixed_props + kbd_props + abs_props) + EOL
return grammar
ERROR = False
def error(fmt, *args, **kwargs):
global ERROR
ERROR = True
print(fmt.format(*args, **kwargs))
def convert_properties(group):
matches = [m[0] for m in group.MATCHES]
props = [p[0] for p in group.PROPERTIES]
return matches, props
def parse(fname):
grammar = hwdb_grammar()
try:
with open(fname, 'r', encoding='UTF-8') as f:
parsed = grammar.parseFile(f)
except ParseBaseException as e:
error('Cannot parse {}: {}', fname, e)
return []
return [convert_properties(g) for g in parsed.GROUPS]
def check_match_uniqueness(groups):
matches = sum((group[0] for group in groups), [])
matches.sort()
prev = None
for match in matches:
if match == prev:
error('Match {!r} is duplicated', match)
prev = match
def check_one_default(prop, settings):
defaults = [s for s in settings if s.DEFAULT]
if len(defaults) > 1:
error('More than one star entry: {!r}', prop)
def check_one_mount_matrix(prop, value):
numbers = [s for s in value if s not in {';', ','}]
if len(numbers) != 9:
error('Wrong accel matrix: {!r}', prop)
try:
numbers = [abs(float(number)) for number in numbers]
except ValueError:
error('Wrong accel matrix: {!r}', prop)
bad_x, bad_y, bad_z = max(numbers[0:3]) == 0, max(numbers[3:6]) == 0, max(numbers[6:9]) == 0
if bad_x or bad_y or bad_z:
error('Mount matrix is all zero in {} row: {!r}',
'x' if bad_x else ('y' if bad_y else 'z'),
prop)
def check_one_keycode(prop, value):
if value != '!' and ecodes is not None:
key = 'KEY_' + value.upper()
if key not in ecodes:
key = value.upper()
if key not in ecodes:
error('Keycode {} unknown', key)
def check_properties(groups):
grammar = property_grammar()
for matches, props in groups:
prop_names = set()
for prop in props:
# print('--', prop)
prop = prop.partition('#')[0].rstrip()
try:
parsed = grammar.parseString(prop)
except ParseBaseException as e:
error('Failed to parse: {!r}', prop)
continue
# print('{!r}'.format(parsed))
if parsed.NAME in prop_names:
error('Property {} is duplicated', parsed.NAME)
prop_names.add(parsed.NAME)
if parsed.NAME == 'MOUSE_DPI':
check_one_default(prop, parsed.VALUE.SETTINGS)
elif parsed.NAME == 'ACCEL_MOUNT_MATRIX':
check_one_mount_matrix(prop, parsed.VALUE)
elif parsed.NAME.startswith('KEYBOARD_KEY_'):
check_one_keycode(prop, parsed.VALUE)
def print_summary(fname, groups):
print('{}: {} match groups, {} matches, {} properties'
.format(fname,
len(groups),
sum(len(matches) for matches, props in groups),
sum(len(props) for matches, props in groups)))
if __name__ == '__main__':
args = sys.argv[1:] or glob.glob(os.path.dirname(sys.argv[0]) + '/[67]0-*.hwdb')
for fname in args:
groups = parse(fname)
print_summary(fname, groups)
check_match_uniqueness(groups)
check_properties(groups)
sys.exit(ERROR)
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment