From: Greg Willits <lists@...>
Date: 2009-07-02T02:22:17+09:00
Subject: Re: converting the string

Vlad Smith wrote:
> Hi everybody! I`m sorry for asking a silly question .. i hope you`ll
> find some time to assist
> 
> while searching shrough html body i get the string :
> <td class=blk11 ><img
> src='https://sc.omniture.com/sc13_5/reports/chart.php?id=CPRIY_6NvJ_kj7s&s=www461.sj2&type=GIF'
> width=624 height=280 border=0 align=absmiddle
> usemap=#imIY_6NvJ_kj7s></td>
> 
> how can i modify it to get just a plain link without tags and params? :
> https://sc.omniture.com/sc13_5/reports/chart.php?id=CPRIY_6NvJ_kj7s&s=www461.sj2&type=GIF

You'll have to expand this to take care of all possible scenarios, but 
here's an example:

   x = "<img src=\"http://some_url_to_scrape\">"
   y = x.scan(/src=\"([\S\s]+?)\"/)

That will return an array, and you'll have to fish the string out of the 
array with y[0][0].

That works specifically with proper HTML using double quotes where your 
examples above used malformed single quotes, but you can either use 
multple expressions, or build a more complex one to cover the various 
cases of quotes href, src, and other attributes names, etc.

There's other ways to do it, this is just a small example to give you 
some ideas.

-- gw




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