ISBN decoder

isbn_decoder.rb

#!/usr/bin/env ruby

#-------------------------------------------------------------------------------
# Name: isbn_decoder.rb
# Purpose: Fetch title from ISBN .
#
# Author: AbdulKarim Memon
#
# Created: 29/07/2012
# Copyright: (c) AbdulKarim Memon 2012
# Licence: GPL v3
# Notes: Fill the access 'key' information before running.
# 
# Dependancy: 'xml-simple'
#   $ gem install -V xml-simple
#
# Sample Usage:
# $ruby ./isbn_debugger.rb 978-0596516178
#   Title: ["The Ruby programming language"]
#   Author: ["David Flanagan and Yukihiro Matsumoto"]

require 'net/http'
require 'xmlsimple'

key='12345678' # Access Key from isbndb.com
url='http://isbndb.com/api/books.xml?access_key='
#ARGV[0] is the first command line arguement
full_url=url + key + '&index1=isbn&value1=' + ARGV[0]
#puts full_url

xml_data = Net::HTTP.get_response(URI.parse(full_url)).body
data=XmlSimple.xml_in(xml_data)

#Display the Title and Author
begin
  puts "Title: #{data["BookList"][0]["BookData"][0]["Title"]}"
  puts "Author: #{data["BookList"][0]["BookData"][0]["AuthorsText"]}"
rescue
  puts "Invalid ISBN or Communication Error"
end