1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
# coding=utf-8
#
# Copyright (C) 2021 - Jonathan Neuhauser <jonathan.neuhauser@outlook.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
"""Toplevel CSS utils that do not depend on other inkex functionality
.. versionadded:: 1.2
Previously a part of :py:mod:`inkex.styles`"""
import re
import cssselect
class ConditionalRule:
"""A single css rule
.. versionchanged:: 1.2
The CSS rule is now processed using cssselect."""
step_to_xpath = [
# namespace addition
(re.compile(r"(::|\/)([a-z]+)(?=\W)(?!-)"), r"\1svg:\2"),
]
def __init__(self, rule):
self.rule = rule.strip()
self.selector = cssselect.parse(self.rule)[0]
def __str__(self):
return self.rule
def to_xpath(self):
"""Attempt to convert the rule into a simplified xpath"""
# the space in the end is needed for the negative lookbehind in the regex, will
# be removed on return
ret = cssselect.HTMLTranslator().selector_to_xpath(self.selector) + " "
for matcher, replacer in self.step_to_xpath:
ret = matcher.sub(replacer, ret)
return ret.strip()
def get_specificity(self):
"""gets the css specificity of this selector
.. versionadded:: 1.2"""
return self.selector.specificity()
|
