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# File 'lib/lock_ness_monster.rb', line 4
def self.lock
unless File.exists?("Gemfile")
puts "Gemfile not present. Nothing to lock."
return
end
gems = IO.readlines(File.join(Dir.pwd, "Gemfile"))
puts "* Looking for gem versions"
installed_gems = %x{bundle exec gem list}.split("\n").reduce({}) do |hash, gem|
match = gem.match(/(\S+)\s\((\S+)\)/)
gem_name, version = match[1], match[2]
hash[gem_name] = version
hash
end
gems.map! do |line|
match = line.match /^\s*gem\s['"](\S+)['"]\s*$/
if match
gem_name = match[1].strip
version_number = installed_gems[gem_name]
line.rstrip + ", '~> #{version_number}'\n"
else
line
end
end
puts "* Updating your Gemfile"
File.open(File.join(Dir.pwd, "Gemfile"), 'w') do |f|
f.puts gems
end
puts "* RAAAWR!! Your Gemfile is locked (and loaded)."
end
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