CSS::Tiny(3) User Contributed Perl Documentation CSS::Tiny(3)NAMECSS::Tiny - Read/Write .css files with as little code as possible
SYNOPSIS
# In your .css file
H1 { color: blue }
H2 { color: red; font-family: Arial }
.this, .that { color: yellow }
# In your program
use CSS::Tiny;
# Create a CSS stylesheet
my $CSS = CSS::Tiny->new();
# Open a CSS stylesheet
$CSS = CSS::Tiny->read( 'style.css' );
# Reading properties
my $header_color = $CSS->{H1}->{color};
my $header2_hashref = $CSS->{H2};
my $this_color = $CSS->{'.this'}->{color};
my $that_color = $CSS->{'.that'}->{color};
# Changing styles and properties
$CSS->{'.newstyle'} = { color => '#FFFFFF' }; # Add a style
$CSS->{H1}->{color} = 'black'; # Change a property
delete $CSS->{H2}; # Delete a style
# Save a CSS stylesheet
$CSS->write( 'style.css' );
# Get the CSS as a <style>...</style> tag
$CSS->html;
DESCRIPTION
"CSS::Tiny" is a perl class to read and write .css stylesheets with as
little code as possible, reducing load time and memory overhead. CSS.pm
requires about 2.6 meg or ram to load, which is a large amount of
overhead if you only want to do trivial things. Memory usage is
normally scoffed at in Perl, but in my opinion should be at least kept
in mind.
This module is primarily for reading and writing simple files, and
anything we write shouldn't need to have documentation/comments. If you
need something with more power, move up to CSS.pm. With the increasing
complexity of CSS, this is becoming more common, but many situations
can still live with simple CSS files.
CSS Feature Support
"CSS::Tiny" supports grouped styles of the form "this, that { color:
blue }" correctly when reading, ungrouping them into the hash
structure. However, it will not restore the grouping should you write
the file back out. In this case, an entry in the original file of the
form
H1, H2 { color: blue }
would become
H1 { color: blue }
H2 { color: blue }
"CSS::Tiny" handles nested styles of the form "P EM { color: red }" in
reads and writes correctly, making the property available in the form
$CSS->{'P EM'}->{color}
"CSS::Tiny" ignores comments of the form "/* comment */" on read
correctly, however these comments will not be written back out to the
file.
CSS FILE SYNTAX
Files are written in a relatively human-orientated form, as follows:
H1 {
color: blue;
}
.this {
color: red;
font-size: 10px;
}
P EM {
color: yellow;
}
When reading and writing, all property descriptors, for example "color"
and "font-size" in the example above, are converted to lower case. As
an example, take the following CSS.
P {
Font-Family: Verdana;
}
To get the value 'Verdana' from the object $CSS, you should reference
the key "$CSS->{P}->{font-family}".
METHODS
new
The constructor "new" creates and returns an empty "CSS::Tiny" object.
read $filename
The "read" constructor reads a CSS stylesheet, and returns a new
"CSS::Tiny" object containing the properties in the file.
Returns the object on success, or "undef" on error.
read_string $string
The "read_string" constructor reads a CSS stylesheet from a string.
Returns the object on success, or "undef" on error.
clone
The "clone" method creates an identical copy of an existing "CSS::Tiny"
object.
write
The "write $filename" generates the stylesheet for the properties, and
writes it to disk. Returns true on success. Returns "undef" on error.
write_string
Generates the stylesheet for the object and returns it as a string.
html
The "html" method generates the CSS, but wrapped in a "style" HTML tag,
so that it can be dropped directly onto a HTML page.
xhtml
The "html" method generates the CSS, but wrapped in a "style" XHTML
tag, so that it can be dropped directly onto an XHTML page.
errstr
When an error occurs, you can retrieve the error message either from
the $CSS::Tiny::errstr variable, or using the "errstr" method.
SUPPORT
Bugs should be reported via the CPAN bug tracker at
http://rt.cpan.org/NoAuth/ReportBug.html?Queue=CSS-Tiny
<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=CSS-Tiny>
For other issues, or commercial enhancement or support, contact the
author.
AUTHOR
Adam Kennedy <adamk@cpan.org>
SEE ALSO
CSS, http://www.w3.org/TR/REC-CSS1 <http://www.w3.org/TR/REC-CSS1>,
Config::Tiny, <http://ali.as/>
COPYRIGHT
Copyright 2002 - 2007 Adam Kennedy.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
The full text of the license can be found in the LICENSE file included
with this module.
perl v5.14.1 2007-11-02 CSS::Tiny(3)
