Fedora Gemfile Checker - Compare a Bundler Gemfile to the Fedora Ruby Stack

fgc.rb

#!/usr/bin/ruby
# Fedora Gemfile Checker
# Print out Gemfile dependencies, highlighting
# missing dependencies and those that are remotely
# available in Fedora.
#
# Licensed under the MIT license
# Copyright (C) 2013 Red Hat, Inc.
# Written By Mo Morsi <mmorsi@redhat.com>
###########################################################

require 'optparse'
require 'colored'
require 'pkgwat'
require 'gemnasium/parser'

##########################################################

conf = { :gemfile             => './Gemfile',
         :command             => nil,
         :highlight_missing   => false,
         :highlight_available => false  }

optparse = OptionParser.new do |opts|
  opts.on('-h', '--help', 'Display this help screen') do
    puts opts
    exit
  end

  opts.on('-g', '--gemfile file', 'Location of the gemfile to parse') do |g|
    conf[:gemfile] = g
  end

  opts.on('-c', '--command command', 'Command to run') do |c|
    conf[:command] = c
  end

  opts.on('-m', '--[no-]missing', 'Highlight missing packages') do |m|
    conf[:highlight_missing] = m
  end

  opts.on('-a', '--[no-]available', 'Highlight missing but avaiable packages') do |a|
    conf[:highlight_available] = a
  end
end

optparse.parse!

conf[:gemfile] = './Gemfile' if conf[:gemfile].nil? && File.exists?('./Gemfile')

##########################################################

local = Gem::Specification.all

parser = Gemnasium::Parser.gemfile(File.read(conf[:gemfile]))
parser.dependencies.each { |d|
  name    = d.name
  req     = d.requirement
  version = req.to_s.split.last # TODO match version better

  if conf[:command]
    cmd = conf[:command].gsub(/NAME/, name).gsub(/VERSION/, version)
    puts cmd

  else
    out   = "#{name} #{req}"
    has   = !local.find { |s| s.name == name && s.version.to_s == version }.nil? if conf[:highlight_missing]
    avail = Pkgwat.get_package("rubygem-#{name}") if !has && conf[:highlight_available] # TODO set timeout

    if has
      puts out.green

    elsif avail
      puts out.yellow

    elsif conf[:highlight_missing]
      puts out.red

    else
      puts out

    end
  end
}

##########################################################