Module: Dgh

Extended by:
Dgh
Included in:
Dgh
Defined in:
lib/dgh.rb,
lib/dgh/version.rb

Defined Under Namespace

Modules: Version

Constant Summary collapse

VERSION = 
[Version::MAJOR, Version::MINOR, Version::PATCH, Version::BUILD].compact.join('.')

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.run ⇒ Object 



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# File 'lib/dgh.rb', line 31

def run
  optspec = <<-SPEC
Usage: dgh [options] inputfile(s)
---
d,debug Output debug messages
h,help  Output help message
  SPEC
  opts = Slop.optspec(optspec)
  opts.parse!

  if opts.help?
    puts opts
    exit
  end

  log = Logger.new(STDOUT)
  log.level = Logger::DEBUG
  LogBuddy.init :default_loggger => log, :disabled => !opts.debug?

  if ARGV.empty? || ARGV.any? {|a| !File.exist? a}
    puts opts
    puts "You can generate a policy listing by running e.g."
    puts "`dpkg --get-selections|egrep '\\binstall'|awk '{print $1}'|\\"
    puts "  xargs env LANG=C apt-cache policy`"
  else
    ARGV.each do |f|
      d "Parsing #{f}"
      find_downgradable(parse(File.open(f).read).content).each do |pkg|
        puts pkg[:name]
      end
    end
  end
end

Instance Method Details

#find_downgradable(packages) ⇒ Object

Find downgradable packages

Parameters:

  • paca 


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# File 'lib/dgh.rb', line 22

def find_downgradable(packages)
  packages.select do |pkg|
    pkg[:versions].any? do |ver|
      ver[:current] && ver[:sources].length == 1 && ver[:sources][0][:source] == '/var/lib/dpkg/status'
    end
  end
end

#parse(input) ⇒ Object

Parse input with the policy grammar

Parameters:

  • input (String) —

    apt-cache policy input

Returns:

  • a list of hashes with info on packages



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# File 'lib/dgh.rb', line 14

def parse(input)
  @parser ||= PolicyParser.new
  @parser.parse input
end