1
2 """cssutils - CSS Cascading Style Sheets library for Python
3
4 Copyright (C) 2004-2008 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: 2008-01-13 18:10:54 +0100 (So, 13 Jan 2008) $'
65 __version__ = '0.9.5a1 $LastChangedRevision: 846 $'
66
67 import codec
68
69
70 import xml.dom
71
72 import errorhandler
73 log = errorhandler.ErrorHandler()
74
75 import util
76 import css
77 import stylesheets
78 from parse import CSSParser
79
80 from serialize import CSSSerializer
81 ser = CSSSerializer()
82
84 """
85 This interface allows the DOM user to create a CSSStyleSheet
86 outside the context of a document. There is no way to associate
87 the new CSSStyleSheet with a document in DOM Level 2.
88
89 This class is its *own factory*, as it is given to
90 xml.dom.registerDOMImplementation which simply calls it and receives
91 an instance of this class then.
92 """
93 _features = [
94 ('css', '1.0'),
95 ('css', '2.0'),
96 ('stylesheets', '1.0'),
97 ('stylesheets', '2.0')
98 ]
99
101 """
102 Creates a new CSSStyleSheet.
103
104 title of type DOMString
105 The advisory title. See also the Style Sheet Interfaces
106 section.
107 media of type DOMString
108 The comma-separated list of media associated with the new style
109 sheet. See also the Style Sheet Interfaces section.
110
111 returns
112 CSSStyleSheet: A new CSS style sheet.
113
114 TODO: DOMException
115 SYNTAX_ERR: Raised if the specified media string value has a
116 syntax error and is unparsable.
117 """
118 return css.CSSStyleSheet(title=title, media=media)
119
121
122 raise NotImplementedError
123
125
126 raise NotImplementedError
127
129 return (feature.lower(), unicode(version)) in self._features
130
131 xml.dom.registerDOMImplementation('cssutils', DOMImplementationCSS)
132
133
134
135 -def parse(filename, encoding=None, href=None, media=None):
136 """
137 reads file with given filename in given encoding (if given)
138 and returns CSSStyleSheet object
139 """
140 return CSSParser().parse(filename, encoding)
141
147
148
150 """
151 sets the global serializer used by all class in cssutils
152 """
153 global ser
154 ser = serializer
155
156
157 if __name__ == '__main__':
158 print __doc__
159