Re: HTML 5 and Tidy

  Hi,

Restarting from scratch with a HTML5 compliant parser is a very extreme 
solution, I was not expecting.
But why not,  it is surely the right way forward.

A first way is the http://about.validator.nu/htmlparser/. I just tried it.
It is quite interesting and would be a good base for a new version in Java.
The good side of this, is that the program could be easily shared and reused
in several forms: standalone program, browser extension, website and so 
on...

Another way would be to use the HTML parser of a "compliant" browser 
with a browser extension
and clean the DOM tree with Javascript. Also, it would allow to convert 
HTML pages between
different versions of HTML easily too.

Or maybe a combination of all this.

For testcases, I hope that http://www.validator.nu/ has
a set of HTML5 testcases for the validation tool. It could be a good base.

I will check a little more in validator.nu to see what it is possible.
Maybe the people of validator.nu would be happy to have a "" Tidy "" program
using or being part in their already huge program :-)

Thanks for the good ideas,

Marc



On 18/10/2010 10:49, Dave Raggett wrote:
> An updated version of Tidy would indeed be valuable, and could be built
> as a post processor to an existing HTML5 compliant parser, see e.g. [1].
> This would involve a complete code rewrite. New Postprocessors could
> also be written for cleaning up the markup exported by the likes of
> Microsoft Office. In all these cases, it is a matter of establishing a
> suite of before and after examples as a basis for development and
> testing. It is a question of what kinds of clean up are justified, and
> what kinds of authoring mistakes (or just sloppiness) it would be worth
> addressing.
>
> If I was starting afresh I would consider starting with a browser
> extension as the debugging facilities in browsers are now pretty good.
> Essentially, read an HTML page (perhaps via XMLHttpRequest), run an
> expert system over the DOM tree, then serialize as XML and post back to
> the server. Once the code was developed, it could then be ported to a
> standalone tool.
>
> So the starting point should be a collection of examples of the kinds of
> things that a new version of Tidy could address. What are the use cases,
> and low hanging fruit vs medium sized problems vs stretch challenges?
>
> [1] http://about.validator.nu/htmlparser/
>
> On Mon, 2010-10-18 at 00:07 +0200, Marc Gueury wrote:
>> Hi all,
>>
>> I know the question will look strange and simple for people deeply
>> involved in HTML 5. Unlike me.
>>
>> But here is my problem, Firefox 4 is going out with a lot of changes and
>> I have to release
>> a new Firefox version of the extension: Html Validator with a lot of
>> changes.
>>
>> So, because HTML 5 is going out of the wood, I try to read about it.
>> I would like to be able to check HTML 5 locally too in the browser.
>>
>> So,
>> * OpenSP and SGML are not able to parse HTML 5 anymore.
>> * The official Validator.nu is hugely complex about 300Mb and impossible
>> to ship with a Firefox extension.
>> * HTML Tidy does not evolve a lot these days and does not support HTML 5
>> at all
>>
>> It is a pity, since I am quite convinced that Html Tidy could be easily
>> modified to
>> lead to a simple HTML5 "checker" and "cleaner"  (probably not a perfect
>> one but who cares...)
>>
>> I begin to think that I will have to say goodbye to offline HTML 5
>> validation on local machine ?
>>
>> The only way will be to validate a HTML page will be to send the HTML
>> page to an external website.
>> HTML tidy cleaner will also  disappear....
>>
>> It seems a step back to prehistoric times :-)
>> I wonder if one of you has some thought about this ?
>>
>> Thanks,
>>
>> Marc
>>
>>
>>
>>
>>
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