cowsay video notes

cowsay_video_notes.txt

brew install cowsay
x = (<<'END')
  don't escape the backslash, f.ex /\:/\
END

IO.popen(['cowsay', message]) do |process|
  process.read
end
$ bundle init

group :development, :test do
  gem 'guard'
  gem 'guard-bundler'
  gem 'guard-rspec'
end

$ bundle install --binstubs

$ guard init

TIV : rvm option to add local binstubs to path..

cowsay is also available as a perl program -> embed it in the app.

$ which perl -> /usr/bin/perl
$ which cowsay
$ cp /usr/games/cowsay -> <project>/bin

time : 30:00

require 'pathname'
cowsay_path = Pathname(__FILE__).dir + "../bin/cowsay"
perl_path = '/usr/bin/perl'

IO.popen([perl_path, cowsay_path.to_s, message]) do |process|
  process.read
end

note: on a remote host, it will lack the cowsay files => we must embed them too in the project
 $ ls /usr/share/cowsay
 $ ls /usr/share/cowsay/cows
 $ cp -r /usr/share/cowsay/cows -> <>/lib/cowsay//cows


? how to make the (remote) program find the cows files?
  ? how to tell popen ..
  a: via a hash -> look into spawn..
  $ man spawn


  cows_path = cowsay_path = Pathname(__FILE__).dir + "../lib/cowsay/cows".to_s  
  env = {'COWPATH' => cows_path}
  IO.popen([env, perl_path, cowsay_path.to_s, message]) do |process|

a short spike :
  lib/cow.rb
    require 'sinatra'
    require_relative 'cowsay'
    get '/' do
      content_type :txt
      Cowsay.new_cow.say('Hoo')
    end
  $ sinatra lib/cow
  $ open localhost:4567

? how to test this ?
time : 49:30
 google : test sinatra with rack/test
 
file: spec/cowsay_integration_spec.rb

  require 'rack/test'
  set :environment, :test
  ..