List Industry Identifiers from Google Books API

list_industry_identifiers.rb

#!/usr/bin/env ruby

# first arg must be a file in the format
#
# name    identifier
#
# where name is just something for you and the identifier is an ISBN-10, ISBN-13,
# or something else that Google's API understands.

require 'json'
require 'open-uri'

GOOGLE_API_BASE='https://www.googleapis.com/books/v1/volumes?q=%s'
input = ARGV[0]
puts "Processing #{input}"
lines = File.open(input).readlines

lines.each do |line|
  name, isbn13 = line.split
  puts name
  puts "isbn13: " + isbn13

  data = JSON.parse(open(GOOGLE_API_BASE % isbn13).read)

  data["items"].each do |item|
    puts item["volumeInfo"]["industryIdentifiers"]
  end
end