1CSS::Tiny(3) User Contributed Perl Documentation CSS::Tiny(3)
2
6 CSS::Tiny - Read/Write .css files with as little code as possible
7
9 # In your .css file
10 H1 { color: blue }
11 H2 { color: red; font-family: Arial }
12 .this, .that { color: yellow }
13 # In your program
15 use CSS::Tiny;
16 # Create a CSS stylesheet
18 my $CSS = CSS::Tiny->new();
19 # Open a CSS stylesheet
21 $CSS = CSS::Tiny->read( 'style.css' );
22 # Reading properties
24 my $header_color = $CSS->{H1}->{color};
25 my $header2_hashref = $CSS->{H2};
26 my $this_color = $CSS->{'.this'}->{color};
27 my $that_color = $CSS->{'.that'}->{color};
28 # Changing styles and properties
30 $CSS->{'.newstyle'} = { color => '#FFFFFF' }; # Add a style
31 $CSS->{H1}->{color} = 'black'; # Change a property
32 delete $CSS->{H2}; # Delete a style
33 # Save a CSS stylesheet
35 $CSS->write( 'style.css' );
36 # Get the CSS as a <style>...</style> tag
38 $CSS->html;
39
41 "CSS::Tiny" is a perl class to read and write .css stylesheets with as
42 little code as possible, reducing load time and memory overhead. CSS.pm
43 requires about 2.6 meg or ram to load, which is a large amount of
44 overhead if you only want to do trivial things. Memory usage is
45 normally scoffed at in Perl, but in my opinion should be at least kept
46 in mind.
47 This module is primarily for reading and writing simple files, and
49 anything we write shouldn't need to have documentation/comments. If you
50 need something with more power, move up to CSS.pm. With the increasing
51 complexity of CSS, this is becoming more common, but many situations
52 can still live with simple CSS files.
53 CSS Feature Support
55 "CSS::Tiny" supports grouped styles of the form "this, that { color:
56 blue }" correctly when reading, ungrouping them into the hash
57 structure. However, it will not restore the grouping should you write
58 the file back out. In this case, an entry in the original file of the
59 form
60 H1, H2 { color: blue }
62 would become
64 H1 { color: blue }
66 H2 { color: blue }
67 "CSS::Tiny" handles nested styles of the form "P EM { color: red }" in
69 reads and writes correctly, making the property available in the form
70 $CSS->{'P EM'}->{color}
72 "CSS::Tiny" ignores comments of the form "/* comment */" on read
74 correctly, however these comments will not be written back out to the
75 file.
76
78 Files are written in a relatively human-orientated form, as follows:
79 H1 {
81 color: blue;
82 }
83 .this {
84 color: red;
85 font-size: 10px;
86 }
87 P EM {
88 color: yellow;
89 }
90 When reading and writing, all property descriptors, for example "color"
92 and "font-size" in the example above, are converted to lower case. As
93 an example, take the following CSS.
94 P {
96 Font-Family: Verdana;
97 }
98 To get the value 'Verdana' from the object $CSS, you should reference
100 the key "$CSS->{P}->{font-family}".
101
103 new
104 The constructor "new" creates and returns an empty "CSS::Tiny" object.
105 read $filename
107 The "read" constructor reads a CSS stylesheet, and returns a new
108 "CSS::Tiny" object containing the properties in the file.
109 Returns the object on success, or "undef" on error.
111 read_string $string
113 The "read_string" constructor reads a CSS stylesheet from a string.
114 Returns the object on success, or "undef" on error.
116 clone
118 The "clone" method creates an identical copy of an existing "CSS::Tiny"
119 object.
120 write
122 The "write $filename" generates the stylesheet for the properties, and
123 writes it to disk. Returns true on success. Returns "undef" on error.
124 write_string
126 Generates the stylesheet for the object and returns it as a string.
127 html
129 The "html" method generates the CSS, but wrapped in a "style" HTML tag,
130 so that it can be dropped directly onto a HTML page.
131 xhtml
133 The "html" method generates the CSS, but wrapped in a "style" XHTML
134 tag, so that it can be dropped directly onto an XHTML page.
135 errstr
137 When an error occurs, you can retrieve the error message either from
138 the $CSS::Tiny::errstr variable, or using the "errstr" method.
139
141 Bugs should be reported via the CPAN bug tracker at
142 <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=CSS-Tiny>
144 For other issues, or commercial enhancement or support, contact the
146 author.
147
149 Adam Kennedy <adamk@cpan.org>
150
152 CSS, <http://www.w3.org/TR/REC-CSS1>, Config::Tiny, <http://ali.as/>
153
155 Copyright 2002 - 2007 Adam Kennedy.
156 This program is free software; you can redistribute it and/or modify it
158 under the same terms as Perl itself.
159 The full text of the license can be found in the LICENSE file included
161 with this module.
162perl v5.10.1 2007-11-02 CSS::Tiny(3)