Class: Specinfra::Helper::DetectOs::Debian

Inherits:
Specinfra::Helper::DetectOs show all
Defined in:
lib/specinfra/helper/detect_os/debian.rb

Instance Method Summary collapse

Methods inherited from Specinfra::Helper::DetectOs

detect, #initialize, #run_command

Constructor Details

This class inherits a constructor from Specinfra::Helper::DetectOs

Instance Method Details

#detect ⇒ Object 



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# File 'lib/specinfra/helper/detect_os/debian.rb', line 2

def detect
  if (debian_version = run_command('cat /etc/debian_version')) && debian_version.success?
    distro   = nil
    release  = nil
    codename = nil
    if (lsb_release = run_command("lsb_release -irc")) && lsb_release.success?
      lsb_release.stdout.each_line do |line|
        distro   = line.split(':').last.strip if line =~ /^Distributor ID:/
        release  = line.split(':').last.strip if line =~ /^Release:/
        codename = line.split(':').last.strip if line =~ /^Codename:/
      end
    elsif (lsb_release = run_command("cat /etc/lsb-release")) && lsb_release.success?
      lsb_release.stdout.each_line do |line|
        distro   = line.split('=').last.strip if line =~ /^DISTRIB_ID=/
        release  = line.split('=').last.strip if line =~ /^DISTRIB_RELEASE=/
        codename = line.split('=').last.strip if line =~ /^DISTRIB_CODENAME=/
      end
    elsif (lsb_release = run_command("cat /etc/os-release")) && lsb_release.success?
      lsb_release.stdout.each_line do |line|
        distro   = line.split('=').last.delete('"').strip if line =~ /^ID=/
        release  = line.split('=').last.delete('"').strip if line =~ /^VERSION_ID=/
        codename = line.split('=').last.delete('"').strip if line =~ /^VERSION_CODENAME=/
      end
      # There is no codename notation until Debian Jessie
      if codename.nil?
        lsb_release.stdout.each_line do |line|
          version = line.split('=').last.delete('"').strip if line =~ /^VERSION=/
          # For debian releases
          if m = /^[0-9]+ \((\w+)\)$/.match(version)
            codename = m[1]
          end
        end
      end
    end
    distro ||= 'debian'
    # lsb-release not available or reported no version number:
    if release.nil? || release == 'n/a'
      release = case debian_version.stdout.chomp
                when /^[[:digit:]]+\.[[:digit:]]+$/
                  debian_version.stdout.chomp
                when %r{^\w+/sid$}
                  # a number larger than any normal Debian version ever:
                  2**32 - 1.0
                else
                  nil
                end
    end
    { :family => distro.gsub(/[^[:alnum:]]/, '').downcase, :release => release, :codename => codename }
  end
end