1
2 """cssutils - CSS Cascading Style Sheets library for Python
3
4 Copyright (C) 2004-2007 Christof Hoeke
5
6 This library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 This library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with this library; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19
20 A Python package to parse and build CSS Cascading Style Sheets.
21
22 Based upon and partly implements the following specifications (DOM only, not any rendering facilities):
23
24 `DOM Level 2 Style CSS <http://www.w3.org/TR/DOM-Level-2-Style/css.html>`__
25 DOM for package css
26 `DOM Level 2 Style Stylesheets <http://www.w3.org/TR/DOM-Level-2-Style/stylesheets.html>`__
27 DOM for package stylesheets
28 `CSSOM <http://dev.w3.org/csswg/cssom/>`__
29 A few details (mainly the NamespaceRule DOM) is taken from here. Plan is to move implementation to the stuff defined here which is newer but still no REC so might change in the future
30
31 `CSS 2.1 <http://www.w3.org/TR/CSS21/>`__
32 Rules and properties are defined here
33 `CSS 2.1 Errata <http://www.w3.org/Style/css2-updates/CR-CSS21-20070719-errata.html>`__
34 A few erratas, mainly the definition of CHARSET_SYM tokens
35 `MediaQueries <http://www.w3.org/TR/css3-mediaqueries/>`__
36 MediaQueries are part of ``stylesheets.MediaList`` since v0.9.4, used in @import and @media rules.
37 `Namespaces <http://www.w3.org/TR/css3-namespace/>`__
38 Added in v0.9.1 and updated to definition in CSSOM in v0.9.4
39 `Selectors <http://www.w3.org/TR/css3-selectors/>`__
40 The selector syntax defined here (and not in CSS 2.1) should be parsable with cssutils (*should* mind though ;) )
41
42
43 Please visit http://cthedot.de/cssutils/ for full details and updates.
44
45 Tested with Python 2.5 on Windows XP.
46
47
48 This library is optimized for usage of ``from cssutils import *`` which
49 import subpackages ``css`` and ``stylesheets``, CSSParser and
50 CSSSerializer classes only.
51
52 Usage may be::
53
54 >>> from cssutils import *
55 >>> parser = CSSParser()
56 >>> sheet = parser.parseString(u'a { color: red}')
57 >>> print sheet.cssText
58
59 """
60 __all__ = ['css', 'stylesheets',
61 'CSSParser', 'CSSSerializer']
62 __docformat__ = 'restructuredtext'
63 __author__ = '$LastChangedBy: cthedot $'
64 __date__ = '$LastChangedDate: 2007-11-04 17:54:54 +0100 (So, 04 Nov 2007) $'
65 __version__ = '0.9.4a3 $LastChangedRevision: 643 $'
66
67
68 import xml.dom
69
70 import errorhandler
71 log = errorhandler.ErrorHandler()
72
73 import util
74 import css
75 import stylesheets
76 from parse import CSSParser
77
78 from serialize import CSSSerializer
79 ser = CSSSerializer()
80
82 """
83 This interface allows the DOM user to create a CSSStyleSheet
84 outside the context of a document. There is no way to associate
85 the new CSSStyleSheet with a document in DOM Level 2.
86
87 This class is its *own factory*, as it is given to
88 xml.dom.registerDOMImplementation which simply calls it and receives
89 an instance of this class then.
90 """
91 _features = [
92 ('css', '1.0'),
93 ('css', '2.0'),
94 ('stylesheets', '1.0'),
95 ('stylesheets', '2.0')
96 ]
97
99 """
100 Creates a new CSSStyleSheet.
101
102 title of type DOMString
103 The advisory title. See also the Style Sheet Interfaces
104 section.
105 media of type DOMString
106 The comma-separated list of media associated with the new style
107 sheet. See also the Style Sheet Interfaces section.
108
109 returns
110 CSSStyleSheet: A new CSS style sheet.
111
112 TODO: DOMException
113 SYNTAX_ERR: Raised if the specified media string value has a
114 syntax error and is unparsable.
115 """
116 return css.CSSStyleSheet(title=title, media=media)
117
119
120 raise NotImplementedError
121
123
124 raise NotImplementedError
125
127 return (feature.lower(), unicode(version)) in self._features
128
129 xml.dom.registerDOMImplementation('cssutils', DOMImplementationCSS)
130
131
132
133 -def parse(filename, encoding=None, href=None, media=None):
134 """
135 reads file with given filename in given encoding (if given)
136 and returns CSSStyleSheet object
137 """
138 return CSSParser().parse(filename, encoding)
139
145
146
148 """
149 sets the global serializer used by all class in cssutils
150 """
151 global ser
152 ser = serializer
153
154
155 if __name__ == '__main__':
156 print __doc__
157