The XML::LibXML family might work for you. You need to parse the DTD -- XML::LibXML::Dtd -- and apply it against the document. $doc->validate($dtd)

I'm not sure how well this works but I often use XML::LibXML for parsing XHTML fragments as a cheap well-formedness validation. If it parses, it's well-formed (though not necessarily correct XHTML). Sorry I don't have a snippet for you.

Update: I just tried a test and it looks like straight $doc->validate() and the non-fatal $doc->is_valid() work fine against the DTD declared in the document. I think you only have to pass it the DTD if you want to apply an external/custom set of rules to the document.

In reply to Re: HTML::Tidy question by Your Mother
in thread HTML::Tidy question by megaurav2002

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.