Module: MakeRubygemDebs

Defined in:
lib/make-rubygem-debs.rb

Constant Summary collapse

FPM = 
gem_executable_presence_check 'fpm'
BUNDLE = 
gem_executable_presence_check 'bundle', 'bundler'

Class Method Summary collapse

Class Method Details

.gem_executable_presence_check(executable, gem = executable) ⇒ Object 



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# File 'lib/make-rubygem-debs.rb', line 41

def self.gem_executable_presence_check executable, gem = executable
  result = `which #{executable}`
  if result.empty?
    raise RuntimeError, "Please install #{gem}, try `gem install #{gem}`."
  end
  return result
end

.make_rubygem_debs(topdir) ⇒ Object 



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# File 'lib/make-rubygem-debs.rb', line 52

def self.make_rubygem_debs topdir
  depends = []
  gems = Dir.chdir topdir do
    if not File.exists? "Gemfile.lock"
      raise RuntimeError, "There is no Gemfile.lock within #{topdir}."
    end
    `bundle list`.split("\n")[1..-1].map do |line|
      name, version = line.split[1..2]
      [name, version[1..-2]]
    end
  end
  debdir = "#{topdir}/rubygem-debs"
  `mkdir -p "#{debdir}"`
  Dir.chdir debdir do
    gems.each do |name, version|
      puts "Trying to make a .deb for #{name} #{version} ..."
      `fpm -s gem -t deb -v #{version} #{name}`
      deb_name = "rubygem-" + name.gsub("_", "-")
      deb_file = "#{deb_name}_#{version}"
      deb = Dir.entries('.').select {|file| file.match deb_file}
      if not deb.empty?
        puts "Successfully created #{deb[0]}."
      else
        raise RuntimeError, "Failed to a .deb for #{name} #{version}."
      end
      depends << "#{deb_name} (>= #{version})"
    end
    control = File.open 'control', 'w'
    control.write "Depends: #{depends.join ", "}\n"
    control.close
  end
end