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comp.lang.ruby

Redirecting CGI#out to a string

zyzygy

1/5/2006 11:05:00 AM

Hi All

For my first "production" ruby app, I'm writing a self contained web
interface to the TSM backup product, based on some existing, awful,
perl code. I'm using webrick because the number of requests will be
small, and I want it cross platform and as self-contained as possible.

I'd prefer to generate my html using the CGI class, but webrick needs a
string to be returned and CGI#out writes to standard output.

I've played with redirecting $stdout to a StringIO object, but haven't
been able to get that to work, and also that doesn't seem to be the
Ruby way, its more Perl-ish.

Can some kind soul please point me in the right direction?

TIA

Steve.

AIX and TSM Administrator
Brisbane Australia
1 Answer

Ross Bamford

1/5/2006 11:50:00 AM

0

On Thu, 05 Jan 2006 11:05:01 -0000, <zyzygy@telstra.com> wrote:

> I'd prefer to generate my html using the CGI class, but webrick needs a
> string to be returned and CGI#out writes to standard output.
>

I've not used CGI much myself, but a quick experiment yielded this:

require 'cgi'

cgi = CGI.new('html4')
html = cgi.html do
cgi.body do
cgi.pre do
"Don't use 'out'"
end
end
end

# Now you can do what you want with it, for example:
puts CGI.pretty(html.gsub(/<([^!][^>]*)>/) { "<#{$1.downcase}>" })

Outputs:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd...
<html>
<body>
<pre>
Don't use 'out'
</pre>
</body>
</html>

I don't know if it's the best tool for your task, but anyway I hope that
helps...

--
Ross Bamford - rosco@roscopeco.remove.co.uk