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require 'cmd/outdated'
require 'cmd/install'
class Fixnum
def plural_s
if self > 1 then "s" else "" end
end
end
module Homebrew extend self
def upgrade
Homebrew.perform_preinstall_checks
outdated = if ARGV.named.empty?
Homebrew.outdated_brews
else
ARGV.formulae.each do |f|
raise "#{f} already upgraded" if f.installed?
raise "#{f} not installed" unless f.rack.exist? and not f.rack.children.empty?
end
end
# Expand the outdated list to include outdated dependencies then sort and
# reduce such that dependencies are installed first and installation is not
# attempted twice. Sorting is implicit the way `recursive_deps` returns
# root dependencies at the head of the list and `uniq` keeps the first
# element it encounters and discards the rest.
outdated.map!{ |f| f.recursive_deps.reject{ |d| d.installed?} << f }
outdated.flatten!
outdated.uniq!
if outdated.length > 1
oh1 "Upgrading #{outdated.length} outdated package#{outdated.length.plural_s}, with result:"
puts outdated.map{ |f| "#{f.name} #{f.version}" } * ", "
end
outdated.each do |f|
installer = FormulaInstaller.new f
installer.show_header = false
oh1 "Upgrading #{f.name}"
installer.install
Keg.new("#{f.rack}/#{f.version}").unlink
installer.caveats
installer.finish # includes link step
end
end
end
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