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Manual Reference Pages  -  HTML::REWRITEATTRIBUTES::RESOURCES (3)

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NAME

HTML::RewriteAttributes::Resources - concise resource-link rewriting

CONTENTS

SYNOPSIS



    # writing some HTML email I see..
    $html = HTML::RewriteAttributes::Resources->rewrite($html, sub {
        my $uri = shift;
        my $content = render_template($uri);
        my $cid = generate_cid_from($content);
        $mime->attach($cid => content);
        return "cid:$cid";
    });

    # need to inline CSS too?
    $html = HTML::RewriteAttributes::Resources->rewrite($html, sub {
        # see above
    },
    inline_css => sub {
        my $uri = shift;
        return render_template($uri);
    });

    # need to inline CSS and follow @imports?
    $html = HTML::RewriteAttributes::Resources->rewrite($html, sub {
        # see above
    },
    inline_css => sub {
        # see above
    }, inline_imports => 1);



DESCRIPTION

HTML::RewriteAttributes::Resources is a special case of HTML::RewriteAttributes for rewriting links to resources. This is to facilitate generating, for example, HTML email in an extensible way.

We don’t care about how to fetch resources and attach them to the MIME object; that’s your job. But you don’t have to care about how to rewrite the HTML.

METHODS

CWnew

You don’t need to call new explicitly - it’s done in rewrite. It takes no arguments.

CWrewrite HTML, callback[, args] -> HTML

See the documentation of HTML::RewriteAttributes.

The callback receives as arguments the resource URI (the attribute value), then, in a hash, tag and attr.

Inlining CSS

rewrite can automatically inline CSS for you.

Passing inline_css will invoke that callback to inline style tags. The callback receives as its argument the URI to a CSS file, and expects as a return value the contents of that file, so that it may be inlined. Returning undef prevents any sort of inlining.

Passing inline_imports (a boolean) will look at any inline CSS and call the inline_css callback to inline that import.

This keeps track of what CSS has already been inlined, and won’t inline a particular CSS file more than once (to prevent import loops).

SEE ALSO

HTML::RewriteAttributes, HTML::Parser, Email::MIME::CreateHTML

AUTHOR

Shawn M Moore, <sartak@bestpractical.com>

LICENSE

Copyright 2008-2010 Best Practical Solutions, LLC. HTML::RewriteAttributes::Resources is distributed under the same terms as Perl itself.
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perl v5.20.3 HTML::REWRITEATTRIBUTES::RESOURCES (3) 2012-10-22

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