Apache2::Filter::Minifier::CSS - CSS minifying output filter
<LocationMatch "\.css$">
PerlOutputFilterHandler Apache2::Filter::Minifier::CSS
# if you need to supplement MIME-Type list
PerlSetVar CssMimeType text/plain
# if you want to explicitly specify the minifier to use
#PerlSetVar CssMinifier CSS::Minifier::XS
#PerlSetVar CssMinifier CSS::Minifier
#PerlSetVar CssMinifier MY::Minifier::function
</LocationMatch>Apache2::Filter::Minifier::CSS is a Mod_perl2 output filter which minifies
CSS using CSS::Minifier or CSS::Minifier::XS.
Only CSS style-sheets are minified, all others are passed through
unaltered. Apache2::Filter::Minifier::CSS comes with a list of known
acceptable MIME-Types for CSS style-sheets, but you can supplement that list
yourself by setting the CssMimeType PerlVar appropriately (use PerlSetVar
for a single new MIME-Type, or PerlAddVar when you want to add multiple
MIME-Types).
Given a choice, using CSS::Minifier::XS is preferred over CSS::Minifier,
but we'll use whichever one you've got available. If you want to explicitly
specify which minifier you want to use, set the CssMinifier PerlVar to the
name of the package/function that implements the minifier. Minification
functions are expected to accept a single parameter (the CSS to be minified)
and to return the minified CSS on completion. If you specify a package name,
we look for a minify() function in that package.
Minification does require additional CPU resources, and it is recommended that you use some sort of cache in order to keep this to a minimum.
Being that you're already running Apache2, though, here's some examples of a mod_cache setup:
Disk Cache
# Cache root directory
CacheRoot /path/to/your/disk/cache
# Enable cache for "/css/" location
CacheEnable disk /css/
Memory Cache
# Cache size: 4 MBytes
MCacheSize 4096
# Min object size: 128 Bytes
MCacheMinObjectSize 128
# Max object size: 512 KBytes
MCacheMaxObjectSize 524288
# Enable cache for "/css/" location
CacheEnable mem /css/
-
handler($filter)
CSS minification output filter.
Graham TerMarsch (cpan@howlingfrog.com)
Many thanks to Geoffrey Young for writing Apache::Clean, from which several
things were lifted. :)
Copyright (C) 2007, Graham TerMarsch. All Rights Reserved.
This is free software; you can redistribute it and/or modify it under the same license as Perl itself.