NAME
    CSS::Inliner - Library for converting CSS <style> blocks to inline
    styles.

SYNOPSIS
    use Inliner;

    my $inliner = new Inliner();

    $inliner->read_file({filename => 'myfile.html'});

    print $inliner->inlinify();

DESCRIPTION
    Library for converting CSS style blocks into inline styles in an HTML
    document. Specifically this is intended for the ease of generating HTML
    emails. This is useful as even in 2013 Gmail and Hotmail don't support
    top level <style> declarations.

CONSTRUCTOR
    new ([ OPTIONS ])
       Instantiates the Inliner object. Sets up class variables that are
       used during file parsing/processing. Possible options are:

       html_tree (optional). Pass in a custom instance of HTML::Treebuilder

       strip_attrs (optional). Remove all "id" and "class" attributes during
       inlining

       leave_style (optional). Leave style/link tags alone within <head>
       during inlining

METHODS
    fetch_file( params )
            Fetches a remote HTML file that supposedly contains both HTML
            and a style declaration, properly tags the data with the proper
            characterset as provided by the remote webserver (if any).
            Subsequently calls the read() method automatically.

            This method expands all relative urls, as well as fully expands
            the stylesheet reference within the document.

            This method requires you to pass in a params hash that contains
            a url argument for the requested document. For example:

            $self->fetch_file({ url => 'http://www.example.com' });

    read_file( params )
            Opens and reads an HTML file that supposedly contains both HTML
            and a style declaration. It subsequently calls the read() method
            automatically.

            This method requires you to pass in a params hash that contains
            a filename argument. For example:

            $self->read_file({filename => 'myfile.html'});

            Additionally you can specify the character encoding within the
            file, for example:

            $self->read_file({filename => 'myfile.html', charset =>
            'utf8'});

    read( params )
            Reads passed html data and parses it. The intermediate data is
            stored in class variables.

            The <style> block is ripped out of the html here, and stored
            separately. Class/ID/Names used in the markup are left alone.

            This method requires you to pass in a params hash that contains
            scalar html data. For example:

            $self->read({html => $html});

            NOTE: You are required to pass a properly encoded perl reference
            to the html data. This method does *not* do the dirty work of
            encoding the html as utf8 - do that before calling this method.

    inlinify()
            Processes the html data that was entered through either 'read'
            or 'read_file', returns a scalar that contains a composite chunk
            of html that has inline styles instead of a top level <style>
            declaration.

    query() Given a particular selector return back the applicable styles

    specificity()
            Given a particular selector return back the associated
            selectivity

    content_warnings()
            Return back any warnings thrown while inlining a given block of
            content.

            Note: content warnings are initialized at inlining time, not at
            read time. In order to receive back content feedback you must
            perform inlinify() first

Sponsor
    This code has been developed under sponsorship of MailerMailer LLC,
    http://www.mailermailer.com/

AUTHOR
    Kevin Kamel <"kamelkev@mailermailer.com">

CONTRIBUTORS
    Vivek Khera <"vivek@khera.org"> Michael Peters <"wonko@cpan.org">

LICENSE
    This module is Copyright 2013 Khera Communications, Inc. It is licensed
    under the same terms as Perl itself.

