From: James Edward Gray II <james@...>
Date: 2006-03-08T23:01:13+09:00
Subject: Re: Is there link extractor or similar html processing libs for Ruby

On Mar 7, 2006, at 7:48 PM, William James wrote:

> class String
>   def xtag(s)
>     result = []
>     scan( %r!
>               < #{s}  (?: \s+ (  [^>]*  )  )? / >
>               |
>               < #{s}  (?: \s+ (  [^>]*  )  )? >
>               ( .*? )  </ #{s} >
>           !mix )  \
>       { |unpaired, attr, data|   h = { }
>         ( unpaired || attr || "" ).
>         scan( %r{  ( \w+ ) \s* = \s*
>                    (?: ( ["'] ) ( .*? ) \2  |  ( \S+ )  )
>                 }x ) { |k,q,v,v2|
>           h[k.downcase] = (v || v2) }
>         block_given? ? ( yield [ h, data ] ) : result << [ h, data ]
>       }
>     result
>   end
> end
>
> DATA.read.xtag('a'){|atr,txt| puts atr['href'], txt }
>
> __END__
>   <a
>   href = "alert('Junior broke it!')" >foo bar</a>
>   <a
>   href = www.foo.bar >foo bar
>   </a>
> upcoming <A HREF="./">HTML 3.2 reference</A>. All the
> is <A HREF='./special/a.html'>A</A>, with the attribute HREF.
> 	<a target="_blank" href="/support?hl=en">Help</a> |

<a href="if (my_var > 5) { whatever() }">Javascript Link</a>

James Edward Gray II