Generate XHTML1.1 with subs using Typesafe::HTML
Perl 6
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Write XHTML elements utilising named arguments to guard against typos. Colons in names of XHTML attributes are replaced with a hyphen (e.g. xml:lang). Use the html element names as an import tag or :ALL to get them all. Please note that there is a dd-tag what will overwrite dd from the settings.

The actual module is generated form the official XHTML 1.1 Schema. There is no offical XML Schema for HTML5 (because it isn't XML), if you happen to come across one that works please let me know.

It uses Typesafe::HTML to guard against lack of quoting of HTML-tags. As a dropin-replacement of HTML::Writer, it's about 5% slower then the former. See below how to "overload" that module, see below.

Typesafe::HTML::Skeleton provides the routine xhtml-skeleton that takes instances of HTML (the type) as parameters and returns HTML. The named arguments takes a single or a list of tags of type HTML to be added to the header of the resulting XHTML document. HTML is a flat eager string that is about 5% slower then without typesafety. If you need a DOM use a module that does not focus on speed.


use v6;
use Typesafe::XHTML::Writer :ALL;

put html( xml-lang=>'de', 
        div( id=>"uniq",
          p( class=>"abc", 'your text here'),
          p( 'more text' ),
          '<p>this will be quoted with &lt; and &amp;</p>'

put span('<b>this will also be quoted with HTML-entities</b>');

With skeleton:

use v6;
use Typesafe::XHTML::Writer :p, :title, :style;
use Typesafe::XHTML::Skeleton;

put xhtml-skeleton(
        p('Hello Camelia!', class=>'foo'),
        'Camelia can quote all the <<<< and &&&&.', 
        header=>(title('Hello Camelia'), style(' { color: #fff; }' ))

Enable typesafe concatenation

use v6;
use Typesafe::HTML;
use Typesafe::XHTML::Writer :p;
use Typesafe::XHTML::Skeleton;

my $inject = '<script src="http://dr.evil.ord/1337.js></script>';
put xhtml-skeleton(p('Hello Camelia!') ~ $inject);

Without Typesafe::HTML the p-tag would also be quoted. It would be secure but would not do what you want.

Provide your own type guard

You can provide your own type guard to replace Typesafe::HTML by providing a type object as the first positional to use. To use the original operators defined in Typesafe::HTML make sure to subclass from HTML.

use Typesafe::HTML;

class ExtendedHTML is HTML {	
	multi method utf8-to-htmlentity (Str:D \s) is export {
		s.subst('&', '&amp;', :g).subst('<', '&lt;', :g).subst('>', '&gt;', :g);

use Typesafe::XHTML::Writer ExtendedHTML, :span;

put span(id=>'foo', "<span>Hello Camelia!</span>");

# <span id="foo">
#   &lt;span&gt;Hello Camelia!&lt;/span&gt;
# </span>

Enable indentation

use Typesafe::XHTML::Writer :writer-shall-indent; # :ALL will work too
writer-shall-indent True;


(c) Wenzel P. P. Peppmeyer, Released under Artistic License 2.0.