comp.lang.ruby

Alex Young

8/17/2006 8:21:00 AM

Neil Charlton wrote:
> Hi
>
> I would like to test for the existence of a .jpg image on a remote
> server over HTTP.
>
> I have tried 2 different methods but they are not what I need.
>
> Method 1:
>
> require 'open-uri'
> if open('http://example.net/path/to/imag...)
>
> end
>
require 'net/http'

# Strict existence
def url_exists?(path)
u = URI.parse(path)
h = Net::HTTP.new(u.host, u.port)
r = h.head(u.path)
return Net::HTTPOK === r
end

# Lack of non-existence
def url_found?(path)
u = URI.parse(path)
h = Net::HTTP.new(u.host, u.port)
r = h.head(u.path)
return !(Net::HTTPNotFound === r)
end

--
Alex