brew-reinstall (Handy after an OSX upgrade!)

brew-reinstall

#!/usr/bin/env ruby
# brew-reinstall

# 20141003
# 0.4.0

# Notes:
# 1. If a reinstall fails, it should not block the reinstallation of other brews, but rather report that failure at the end.

# Changes since 0.3:
# 1. + failures().
# 2. + reinstall_brews().
# 3. + report_failures().
# 4. + main().

require 'Kernel/run'

def failures
  @failures ||= []
end

def brews
  if !ARGV.empty?
    ARGV
  else
    `brew list`.split
  end
end

def reinstall(brew)
  run "brew uninstall #{brew}", show: true
  run "brew install #{brew}", show: true
end

def reinstall_brews
  brews.each do |brew|
    begin
      reinstall(brew)
    rescue RuntimeError
      failures << brew
    end
  end
end

def report_failures
  if !failures.empty?
    puts 'brew-reinstall failed to reinstall the following brews:'
    failures.each do |failure|
      puts failure
    end
  end
end

def main
  reinstall_brews
  report_failures
end

main

run.rb

# Kernel/run.rb
# Kernel#run

# 20141002
# 0.1.4

# Changes:
# 1. Make use of a number of options, substituting ENV['DRY_RUN'] for options[:dry_run], and adding :show and :dont_raise.
# 0/1
# 2. When showing the output make it clear that it is a dry run.
# 1/2
# 3. If the :dry_run option is specified, then it makes no sense to test $? for success, so group all that code in the unless.
# 2/3
# 4. The logic was reversed for whether to raise or not.
# 3/4
# 5. Really fixed the raise logic finally, I think.

# Todo:
# 1. Even though this is a small method it might be good idea to add some automated tests.

require 'Array/extract_optionsX'

module Kernel

  def run(*args)
    options = args.extract_options!
    command = args
    if options[:show] && !options[:dry_run]
      puts command.join(' ')
    elsif options[:show] && options[:dry_run]
      puts "DRY RUN *** #{command.join(' ')} *** DRY RUN"
    end
    unless options[:dry_run]
      system(*command)
      unless $?.success? && !options[:dont_raise]
        raise "#{command.inspect} failed to exit cleanly."
      end
    end
  end

end