| Copyright: | 2004-2013 Christof Hoeke |
|---|
A Python package to parse and build CSS Cascading Style Sheets. DOM only, not any rendering facilities!
Based upon and partly implementing the following specifications :
The cssutils tokenizer is a customized implementation of CSS3 Module: Syntax (W3C Working Draft 13 August 2003) which itself is based on the CSS 2.1 tokenizer. It tries to be as compliant as possible but uses some (helpful) parts of the CSS 2.1 tokenizer.
I guess cssutils is neither CSS 2.1 nor CSS 3 compliant but tries to at least be able to parse both grammars including some more real world cases (some CSS hacks are actually parsed and serialized). Both official grammars are not final nor bugfree but still feasible. cssutils aim is not to be fully compliant to any CSS specification (the specifications seem to be in a constant flow anyway) but cssutils should be able to read and write as many as possible CSS stylesheets “in the wild” while at the same time implement the official APIs which are well documented. Some minor extensions are provided as well.
Please visit http://cthedot.de/cssutils/ or https://bitbucket.org/cthedot/cssutils/ for more details.
There is also a low-traffic cssutils discussion group.
cssutils is developed on standard Python but works under Python 2.x (from 2.5, 2.7.6 tested), 3.x (v3.3.3 tested) and Jython (from 2.5.1). IronPython has not been tested yet but might work? Python 2.4 and older are not supported since cssutils 0.9.8 anymore. cssutils is not thread safe, please beware!
Copyright 2005 - 2013 Christof Hoeke
cssutils is published under the LGPL 3 or later
cssutils is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
cssutils 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with cssutils. If not, see http://www.gnu.org/licenses.
From 0.9.6 cssutils uses Distribute
After installing Distribute use:
> easy_install cssutils
to install the latest version of cssutils.
Alternatively download the provided source distribution. Expand the file and from a command line install with:
> python setup.py install
To uninstall remove any registrations of cssutils eggs with Distribute and remove the eggs which should be installed at PYTHONDIR/Lib/site-packages/cssutils too.
# -*- coding: utf-8 -*-
import cssutils
css = u'''/* a comment with umlaut ä */
@namespace html "http://www.w3.org/1999/xhtml";
@variables { BG: #fff }
html|a { color:red; background: var(BG) }'''
sheet = cssutils.parseString(css)
for rule in sheet:
if rule.type == rule.STYLE_RULE:
# find property
for property in rule.style:
if property.name == 'color':
property.value = 'green'
property.priority = 'IMPORTANT'
break
# or simply:
rule.style['margin'] = '01.0eM' # or: ('1em', 'important')
sheet.encoding = 'ascii'
sheet.namespaces['xhtml'] = 'http://www.w3.org/1999/xhtml'
sheet.namespaces['atom'] = 'http://www.w3.org/2005/Atom'
sheet.add('atom|title {color: #000000 !important}')
sheet.add('@import "sheets/import.css";')
# cssutils.ser.prefs.resolveVariables == True since 0.9.7b2
print sheet.cssText
results in:
@charset "ascii";
@import "sheets/import.css";
/* a comment with umlaut \E4 */
@namespace xhtml "http://www.w3.org/1999/xhtml";
@namespace atom "http://www.w3.org/2005/Atom";
xhtml|a {
color: green !important;
background: #fff;
margin: 1em
}
atom|title {
color: #000 !important
}
The current documenation can be found at http://packages.python.org/cssutils/
cssutils is far from being perfect or even complete. If you find any bugs (especially specification violations) or have problems or suggestions please put them in the Issue Tracker at Bitbucket.
Thanks to Simon Sapin, Jason R. Coombs and Walter Doerwald for patches, help and discussion. Thanks to Kevin D. Smith for the value validating module. Thanks also to Cory Dodt, Tim Gerla, James Dobson and Amit Moscovich for helpful suggestions and code patches. Thanks to Fredrik Hedman for help on port of encutils to Python 3.