From: Robert Dober <robert.dober@...>
Date: 2008-11-29T00:38:50+09:00
Subject: Re: Help with regexp and gsub

On Fri, Nov 28, 2008 at 4:13 PM, jackster the jackle
<johnsheahan@sflistdb.com> wrote:
> I need to be able to match all data before the word "Total:" and then I
> will replace it with "" using gsub.
>
> Here is the text:
>
> C
> THIS IS THE TEXT I WANT TO MATCH ON
> and this.....
> and this too...
> and there could be this line too but the following line is always there.
> Total:
> But I need to keep
> all text after
> the text "Total:"
>
>
> I was thinking that I would somehow use a regexp index but I'm not sure
> how to do it.
>
> thanks
> jackster
> --
> Posted via http://www.ruby-forum.com/.
>
>
I would read the lines into an array or split the string by /\r?\n/

then the following (might be slow for long texts) should do the trick

text.split( /\r?\n/).inject(""){ ...
or
lines.inject(""){
    |text, line|
    if ! trigger.empty? || /^Total/ === line then ## (1)
       text << line.chomp << "\n"
    else
      ""
    end
}

In case you do not want the line containing Total replace the if with
the following

   if text.empty?
      /^Total/ === line ? "x" : ""
   else
    text << line.chomp << "\n"
   end
}[2..-1]

HTH
Robert
(1) You are absolutely right Charles I tried this with unless...else,
laughably unreadable

-- 
Ne baisse jamais la tête, tu ne verrais plus les étoiles.

Robert Dober ;)