From: Xeno Campanoli / Eskimo North and Gmail <xeno.campanoli@...>
Date: 2010-07-17T09:03:21+09:00
Subject: Re: Hpricot test for equivalence of two xml segments?


>> The only thing I am concerned about is permutations of attributes inside
>> the tags.  Everything else I'm seeing is regular.  Is there something where
>> I can parse all the tags in a segment and tell if they are equivalent and
>> just have the attributes in different orders?  I'm not even concerned about
>> different tag forms.  We don't see that.  A typical example is:
>>
>> <  <li><img src="/my/image/path/thingy.jpg" alt="alt text" />My Text</li>
>>> <li><img alt="alt text" src="/my/image/path/thingy.jpg" />My Text</li>
>>
>> I need to have something that can help me judge such things as equivalent.
>> Again, I NEVER see tag permutations, but just attribute permutations.
>>

I believe you.  Nokogirl wouldn't install though...yes, and nor did Lorax...

Looks like there's an install site, but I hesitate to use something this outside 
the mainstream on a project like this.  I don't want to impose needless 
maintenance problems on my environment.


>
> You should take a look at Lorax:
>
> http://github.com/flavorjones/lorax
>
> which is Nokogiri-based.
>
> Your definition of equivalence (the semantically correct one, imho) can be
> tested with:
>
>      Lorax::Signature.new(Nokogiri::XML(string1).root).signature ==
> Lorax::Signature.new(Nokogiri::XML(string2).root).signature
>
> And note that Nokogiri will also alllow you to parse XML fragments.
>
> HTH,
> -m
>
>
>
>>
>>>
>> Thank you for you response.
>>
>> Sincerely, Xeno
>>
>>
>> --
>> "It's the preponderance, stupid!" - Professor Stephen Schneider, IPCC
>> member
>>
>>
>


-- 
"It's the preponderance, stupid!" - Professor Stephen Schneider, IPCC member