From: nobu.nokada@...
Date: 2002-08-23T11:18:38+09:00
Subject: Re: Can I write to DATA?

Hi,

At Fri, 23 Aug 2002 05:44:07 +0900,
GOTO Kentaro wrote:
> > How would I modify the text below __END__?
> > 
> > ----- begin file ---
> > # code to modify text below
> > __END__
> > change me
> > ---- end file---
> 
> You mean like this?
> 
> f = open(__FILE__, "r+")
> if /(.*?^__END__$.*?)(^.+)/m =~ f.read
>   script_size = $1.size
>   f.pos = script_size
>   f.truncate(script_size)
>   f << $2.gsub(/^/, "> ") + "hello?\n"
> end
> f.close
> __END__
> hello?

This fails for a script contains __END__ inside string.  I
recommend:

script_size = __DATA__.pos

And under Windows, I guess you need to close __DATA__ before
reopen __FILE__.

-- 
Nobu Nakada