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# frozen_string_literal: true
require 'rubygems'
require 'rubygems/user_interaction'
##
# Cleans up after a partially-failed uninstall or for an invalid
# Gem::Specification.
#
# If a specification was removed by hand this will remove any remaining files.
#
# If a corrupt specification was installed this will clean up warnings by
# removing the bogus specification.
class Gem::Doctor
include Gem::UserInteraction
##
# Maps a gem subdirectory to the files that are expected to exist in the
# subdirectory.
REPOSITORY_EXTENSION_MAP = [ # :nodoc:
['specifications', '.gemspec'],
['build_info', '.info'],
['cache', '.gem'],
['doc', ''],
['extensions', ''],
['gems', ''],
].freeze
missing =
Gem::REPOSITORY_SUBDIRECTORIES.sort -
REPOSITORY_EXTENSION_MAP.map { |(k,_)| k }.sort
raise "Update REPOSITORY_EXTENSION_MAP, missing: #{missing.join ', '}" unless
missing.empty?
##
# Creates a new Gem::Doctor that will clean up +gem_repository+. Only one
# gem repository may be cleaned at a time.
#
# If +dry_run+ is true no files or directories will be removed.
def initialize(gem_repository, dry_run = false)
@gem_repository = gem_repository
@dry_run = dry_run
@installed_specs = nil
end
##
# Specs installed in this gem repository
def installed_specs # :nodoc:
@installed_specs ||= Gem::Specification.map { |s| s.full_name }
end
##
# Are we doctoring a gem repository?
def gem_repository?
not installed_specs.empty?
end
##
# Cleans up uninstalled files and invalid gem specifications
def doctor
@orig_home = Gem.dir
@orig_path = Gem.path
say "Checking #{@gem_repository}"
Gem.use_paths @gem_repository.to_s
unless gem_repository?
say 'This directory does not appear to be a RubyGems repository, ' +
'skipping'
say
return
end
doctor_children
say
ensure
Gem.use_paths @orig_home, *@orig_path
end
##
# Cleans up children of this gem repository
def doctor_children # :nodoc:
REPOSITORY_EXTENSION_MAP.each do |sub_directory, extension|
doctor_child sub_directory, extension
end
end
##
# Removes files in +sub_directory+ with +extension+
def doctor_child(sub_directory, extension) # :nodoc:
directory = File.join(@gem_repository, sub_directory)
Dir.entries(directory).sort.each do |ent|
next if ent == "." || ent == ".."
child = File.join(directory, ent)
next unless File.exist?(child)
basename = File.basename(child, extension)
next if installed_specs.include? basename
next if /^rubygems-\d/ =~ basename
next if 'specifications' == sub_directory and 'default' == basename
type = File.directory?(child) ? 'directory' : 'file'
action = if @dry_run
'Extra'
else
FileUtils.rm_r(child)
'Removed'
end
say "#{action} #{type} #{sub_directory}/#{File.basename(child)}"
end
rescue Errno::ENOENT
# ignore
end
end
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