sczizzo/classesdev-lookup.rb

## classesdev-lookup.rb
#!/usr/bin/env ruby
require 'open-uri'
require 'nokogiri'
require 'yaml'

# Course, username, password
# e.g. ./classesdev-lookup.rb AFAM20005 mycnetid 'mysecretpassword'
exit(1) unless ARGV.length == 3
course     = ARGV[0]
course_php = 'https://classesdev.uchicago.edu/courseDetail.php?courseName='
course_url = course_php + "#{course}"
course_doc = open( course_url, :http_basic_authentication => [ARGV[1], ARGV[2]] )
document   = Nokogiri::HTML course_doc

results = []
document.xpath('//table[@class = "coursetable"]//tr').each do |r|
  result = {
    :course     => r.xpath('td[@class="one"]/span[@class="name"]').text.strip,
    :location   => r.xpath('td[@class="one"]/span[@class="location"]').text.strip,
    :title      => r.xpath('td[@class="two"]').text.strip,
    :schedule   => r.xpath('td[@class="four"]').text.strip,
    :enrollment => r.xpath('td[@class="five"]').text.strip
  }

  unless result[:title].empty?
    course     = result.delete :course
    enrollment = result.delete :enrollment

    # Parse enrollment for enrolled and maximum
    # TODO encode strings as negative integers
    m = /\A(?<enrolled>.*?)\/(?<maximum>.*?)\z/x.match enrollment
    result[:enrolled] = m[:enrolled]
    result[:maximum]  = m[:maximum]

    # TODO parse schedule and encode with ice_cube
    result[:schedule].gsub! /\s+/, ' '

    if m = /\A(?<department>[A-Z]{4})\s*(?<number>\d{5})\s*\/\s*(?<section>\w{2})\z/x.match(course)
      # Parse course identifier for department, number, and section
      result[:department] = m[:department]
      result[:number]     = m[:number].to_i
      result[:section]    = m[:section]
      result[:activities] = []
      result[:title]      = result[:title][/\A(.*?) - Evaluations/i, 1]
      results << result
    elsif m = /\A(?<activity>.*?)\z/x.match(course)
      result[:activity] = m[:activity].strip
      result[:title]    = result[:title][/\A(.*?)\r\n/, 1].strip
      results.last[:activities] << result
    end
  end
end
puts results.to_yaml.strip
	#!/usr/bin/env ruby
	require 'open-uri'
	require 'nokogiri'
	require 'yaml'

	# Course, username, password
	# e.g. ./classesdev-lookup.rb AFAM20005 mycnetid 'mysecretpassword'
	exit(1) unless ARGV.length == 3
	course = ARGV[0]
	course_php = 'https://classesdev.uchicago.edu/courseDetail.php?courseName='
	course_url = course_php + "#{course}"
	course_doc = open( course_url, :http_basic_authentication => [ARGV[1], ARGV[2]] )
	document = Nokogiri::HTML course_doc

	results = []
	document.xpath('//table[@class = "coursetable"]//tr').each do \|r\|
	result = {
	:course => r.xpath('td[@class="one"]/span[@class="name"]').text.strip,
	:location => r.xpath('td[@class="one"]/span[@class="location"]').text.strip,
	:title => r.xpath('td[@class="two"]').text.strip,
	:schedule => r.xpath('td[@class="four"]').text.strip,
	:enrollment => r.xpath('td[@class="five"]').text.strip
	}

	unless result[:title].empty?
	course = result.delete :course
	enrollment = result.delete :enrollment

	# Parse enrollment for enrolled and maximum
	# TODO encode strings as negative integers
	m = /\A(?<enrolled>.?)\/(?<maximum>.?)\z/x.match enrollment
	result[:enrolled] = m[:enrolled]
	result[:maximum] = m[:maximum]

	# TODO parse schedule and encode with ice_cube
	result[:schedule].gsub! /\s+/, ' '

	if m = /\A(?<department>[A-Z]{4})\s(?<number>\d{5})\s\/\s*(?<section>\w{2})\z/x.match(course)
	# Parse course identifier for department, number, and section
	result[:department] = m[:department]
	result[:number] = m[:number].to_i
	result[:section] = m[:section]
	result[:activities] = []
	result[:title] = result[:title][/\A(.*?) - Evaluations/i, 1]
	results << result
	elsif m = /\A(?<activity>.*?)\z/x.match(course)
	result[:activity] = m[:activity].strip
	result[:title] = result[:title][/\A(.*?)\r\n/, 1].strip
	results.last[:activities] << result
	end
	end
	end
	puts results.to_yaml.strip