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Commit e0970552 authored by Peter Hutterer's avatar Peter Hutterer
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udev: add the hwdb_parser.py test from systemd


upstream for this file lives in systemd, any changes to the actual parser
should flow back there.

libinput's matches are fairly simple. We have the various LIBINPUT_MODEL_ tags
that just take a "1" and the two attributes that are dimensions.

Signed-off-by: default avatarPeter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 63990614
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......@@ -46,6 +46,10 @@ AC_PROG_CC_C99
AC_PROG_CXX # Only used by build C++ test
AC_PROG_GREP
# Only used for testing the hwdb
AM_PATH_PYTHON([3.0],, [:])
AM_CONDITIONAL([HAVE_PYTHON], [test "$PYTHON" != :])
# Initialize libtool
LT_PREREQ([2.2])
LT_INIT
......
......@@ -41,3 +41,10 @@ DISTCLEANFILES = \
80-libinput-device-groups.rules \
90-libinput-model-quirks.rules
EXTRA_DIST = 80-libinput-test-device.rules
if HAVE_PYTHON
TESTS = parse_hwdb.py
TEST_EXTENSIONS = .py
PY_LOG_COMPILER = $(PYTHON)
endif
EXTRA_DIST += parse_hwdb.py
#!/usr/bin/python3
# vim: set expandtab shiftwidth=4:
# -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
#
# ANY MODIFICATIONS TO THIS FILE SHOULD BE MERGED INTO THE SYSTEMD UPSTREAM
#
# This file is part of systemd. It is distributed 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 functools
import glob
import string
import sys
import os
try:
from pyparsing import (Word, White, Literal, ParserElement, Regex,
LineStart, LineEnd,
ZeroOrMore, OneOrMore, Combine, Or, Optional, Suppress, Group,
nums, alphanums, printables,
stringEnd, pythonStyleComment,
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')
EOL = LineEnd().suppress()
EMPTYLINE = LineStart() + LineEnd()
COMMENTLINE = pythonStyleComment + EOL
INTEGER = Word(nums)
REAL = Combine((INTEGER + Optional('.' + Optional(INTEGER))) ^ ('.' + INTEGER))
UDEV_TAG = Word(string.ascii_uppercase, alphanums + '_')
TYPES = {
'libinput': ('name', 'touchpad', 'mouse'),
}
@functools.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
@functools.lru_cache()
def property_grammar():
ParserElement.setDefaultWhitespaceChars(' ')
model_props = [Regex(r'LIBINPUT_MODEL_[_0-9A-Z]+')('NAME')
- Suppress('=') -
(Literal('1'))('VALUE')
]
dimension = INTEGER('X') + Suppress('x') + INTEGER('Y')
sz_props = (
('LIBINPUT_ATTR_SIZE_HINT', Group(dimension('SETTINGS*'))),
('LIBINPUT_ATTR_RESOLUTION_HINT', Group(dimension('SETTINGS*'))),
)
size_props = [Literal(name)('NAME') - Suppress('=') - val('VALUE')
for name, val in sz_props]
grammar = Or(model_props + size_props);
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:
parsed = grammar.parseFile(fname)
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_dimension(prop, value):
if int(value[0]) <= 0 or int(value[1]) <= 0:
error('Dimension {} invalid', value)
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 == "LIBINPUT_ATTR_SIZE_HINT" or \
parsed.NAME == "LIBINPUT_ATTR_RESOLUTION_HINT":
check_one_dimension(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]) + '/*.hwdb')
for fname in args:
groups = parse(fname)
print_summary(fname, groups)
check_match_uniqueness(groups)
check_properties(groups)
sys.exit(ERROR)
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