From: Josh Cheek <josh.cheek@...>
Date: 2010-03-13T08:23:19+09:00
Subject: Re: Hpricot Relative Path

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On Fri, Mar 12, 2010 at 3:54 PM, Ben Bleything <ben@bleything.net> wrote:

> On Fri, Mar 12, 2010 at 1:22 PM, Josh Cheek <josh.cheek@gmail.com> wrote:
> > The problem is that the path is relative.
> > I've done a little googling, queried my ruby and rails ML archives,
> glanced
> > at hpricot code, and looked through the method lists for open-uri and
> > hpricot.
> > So far, I don't see anything that looks very useful.
> > Is there a way to have it give me the absolute path so that I can
> reference
> > the picture later?
>
> Hpricot is just telling you what's in the HTML.  Munging the
> document's contents are your responsibility, not the parser's :)
>
> > The only thing I've found that works so far involves string manipulation,
> > which seems like a brittle workaround to replace something that probably
> > exists if I could just find it.
>
> Look into the URI library.
>
>  require 'uri'
>
>  uri = URI.parse( "http://yfrog.com/03gssacj" )
>  uri.path = # your hpricot magic to get the image path goes here
>
> Ben
>
>
Thanks, this is what I am using now:

page             =  open url
image_path       =  URI.parse page.base_uri.to_s.sub( %r(/$) , '' )
image_path.path  =  (Hpricot(page)%"#main_image").attributes['src']
image_path.to_s

It still seems a little excessive, but it's a lot better than what I had
before.

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