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# frozen_string_literal: true
require_relative '../command'
require_relative '../version_option'
require_relative '../uninstaller'
require 'fileutils'
##
# Gem uninstaller command line tool
#
# See `gem help uninstall`
class Gem::Commands::UninstallCommand < Gem::Command
include Gem::VersionOption
def initialize
super 'uninstall', 'Uninstall gems from the local repository',
:version => Gem::Requirement.default, :user_install => true,
:check_dev => false, :vendor => false
add_option('-a', '--[no-]all',
'Uninstall all matching versions'
) do |value, options|
options[:all] = value
end
add_option('-I', '--[no-]ignore-dependencies',
'Ignore dependency requirements while',
'uninstalling') do |value, options|
options[:ignore] = value
end
add_option('-D', '--[no-]check-development',
'Check development dependencies while uninstalling',
'(default: false)') do |value, options|
options[:check_dev] = value
end
add_option('-x', '--[no-]executables',
'Uninstall applicable executables without',
'confirmation') do |value, options|
options[:executables] = value
end
add_option('-i', '--install-dir DIR',
'Directory to uninstall gem from') do |value, options|
options[:install_dir] = File.expand_path(value)
end
add_option('-n', '--bindir DIR',
'Directory to remove executables from') do |value, options|
options[:bin_dir] = File.expand_path(value)
end
add_option('--[no-]user-install',
'Uninstall from user\'s home directory',
'in addition to GEM_HOME.') do |value, options|
options[:user_install] = value
end
add_option('--[no-]format-executable',
'Assume executable names match Ruby\'s prefix and suffix.') do |value, options|
options[:format_executable] = value
end
add_option('--[no-]force',
'Uninstall all versions of the named gems',
'ignoring dependencies') do |value, options|
options[:force] = value
end
add_option('--[no-]abort-on-dependent',
'Prevent uninstalling gems that are',
'depended on by other gems.') do |value, options|
options[:abort_on_dependent] = value
end
add_version_option
add_platform_option
add_option('--vendor',
'Uninstall gem from the vendor directory.',
'Only for use by gem repackagers.') do |value, options|
unless Gem.vendor_dir
raise Gem::OptionParser::InvalidOption.new 'your platform is not supported'
end
alert_warning 'Use your OS package manager to uninstall vendor gems'
options[:vendor] = true
options[:install_dir] = Gem.vendor_dir
end
end
def arguments # :nodoc:
"GEMNAME name of gem to uninstall"
end
def defaults_str # :nodoc:
"--version '#{Gem::Requirement.default}' --no-force " +
"--user-install"
end
def description # :nodoc:
<<-EOF
The uninstall command removes a previously installed gem.
RubyGems will ask for confirmation if you are attempting to uninstall a gem
that is a dependency of an existing gem. You can use the
--ignore-dependencies option to skip this check.
EOF
end
def usage # :nodoc:
"#{program_name} GEMNAME [GEMNAME ...]"
end
def check_version # :nodoc:
if options[:version] != Gem::Requirement.default and
get_all_gem_names.size > 1
alert_error "Can't use --version with multiple gems. You can specify multiple gems with" \
" version requirements using `gem uninstall 'my_gem:1.0.0' 'my_other_gem:~>2.0.0'`"
terminate_interaction 1
end
end
def execute
check_version
if options[:all] and not options[:args].empty?
uninstall_specific
elsif options[:all]
uninstall_all
else
uninstall_specific
end
end
def uninstall_all
specs = Gem::Specification.reject {|spec| spec.default_gem? }
specs.each do |spec|
options[:version] = spec.version
uninstall_gem spec.name
end
alert "Uninstalled all gems in #{options[:install_dir] || Gem.dir}"
end
def uninstall_specific
deplist = Gem::DependencyList.new
original_gem_version = {}
get_all_gem_names_and_versions.each do |name, version|
original_gem_version[name] = version || options[:version]
gem_specs = Gem::Specification.find_all_by_name(name, original_gem_version[name])
say("Gem '#{name}' is not installed") if gem_specs.empty?
gem_specs.each do |spec|
deplist.add spec
end
end
deps = deplist.strongly_connected_components.flatten.reverse
gems_to_uninstall = {}
deps.each do |dep|
unless gems_to_uninstall[dep.name]
gems_to_uninstall[dep.name] = true
unless original_gem_version[dep.name] == Gem::Requirement.default
options[:version] = dep.version
end
uninstall_gem(dep.name)
end
end
end
def uninstall_gem(gem_name)
uninstall(gem_name)
rescue Gem::GemNotInHomeException => e
spec = e.spec
alert("In order to remove #{spec.name}, please execute:\n" +
"\tgem uninstall #{spec.name} --install-dir=#{spec.installation_path}")
rescue Gem::UninstallError => e
spec = e.spec
alert_error("Error: unable to successfully uninstall '#{spec.name}' which is " +
"located at '#{spec.full_gem_path}'. This is most likely because" +
"the current user does not have the appropriate permissions")
terminate_interaction 1
end
def uninstall(gem_name)
Gem::Uninstaller.new(gem_name, options).uninstall
end
end