hpricot, a balloon

This is a balloon. Balloons are web pages that double as Ruby programs. To run this page: ruby -ropen-uri -e 'eval(open("http://balloon.hobix.com/hpricot").read)'

BE ALERT! Running this script could be dangerous. Be sure to review this page. You know: it's like anything else on the Internet.

Connects to gem server at code.whytheluckystiff.net.
Fetches the hpricot gem. 0.4

Runs some Ruby.

Click here to view the code.

require 'rubygems'
require 'hpricot'
require 'open-uri'

print "URL: "
url = gets

puts "You may use XPath (//span[@class='entryPermalink']) or CSS selectors (span.entryPermalink) here."
print "Expression: "
expr = gets

doc = open(url) { |f| Hpricot.parse(f) }
elements = (doc/expr)
if elements.empty?
  puts "** No elements found."
  exit
end

puts "** #{elements.length} qualifying elements found."
print "Print as (h)tml or (i)nspect? [h/I]? "
case gets.strip.downcase
when "h"
  elements.each { |ele| puts ele }
else
  elements.each { |ele| pp ele }
end

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hpricot, a balloon

by why