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|
# frozen_string_literal: true
require "pathname"
require_relative "helpers"
require_relative "path"
class RubygemsVersionManager
include Spec::Helpers
include Spec::Path
def initialize(env_version)
@env_version = env_version
end
def switch
return if use_system?
unrequire_rubygems_if_needed
switch_local_copy_if_needed
prepare_environment
end
private
def use_system?
@env_version.nil?
end
def unrequire_rubygems_if_needed
return unless rubygems_unrequire_needed?
require "rbconfig"
ruby = File.join(RbConfig::CONFIG["bindir"], RbConfig::CONFIG["ruby_install_name"])
ruby << RbConfig::CONFIG["EXEEXT"]
cmd = [ruby, $0, *ARGV].compact
cmd[1, 0] = "--disable-gems"
exec(ENV, *cmd)
end
def switch_local_copy_if_needed
return unless local_copy_switch_needed?
Dir.chdir(local_copy_path) do
sys_exec!("git remote update")
sys_exec!("git checkout #{target_tag_version} --quiet")
end
end
def prepare_environment
$:.unshift File.expand_path("lib", local_copy_path)
end
def rubygems_unrequire_needed?
defined?(Gem::VERSION) && Gem::VERSION != target_gem_version
end
def local_copy_switch_needed?
!env_version_is_path? && target_gem_version != local_copy_version
end
def target_gem_version
@target_gem_version ||= resolve_target_gem_version
end
def target_tag_version
@target_tag_version ||= resolve_target_tag_version
end
def local_copy_version
gemspec_contents = File.read(local_copy_path.join("lib/rubygems.rb"))
version_regexp = /VERSION = ["'](.*)["']/
version_regexp.match(gemspec_contents)[1]
end
def local_copy_path
@local_copy_path ||= resolve_local_copy_path
end
def resolve_local_copy_path
return expanded_env_version if env_version_is_path?
rubygems_path = root.join("tmp/rubygems")
unless rubygems_path.directory?
rubygems_path.parent.mkpath
sys_exec!("git clone https://github.com/rubygems/rubygems.git #{rubygems_path}")
end
rubygems_path
end
def env_version_is_path?
expanded_env_version.directory?
end
def expanded_env_version
@expanded_env_version ||= Pathname.new(@env_version).expand_path(root)
end
def resolve_target_tag_version
return "v#{@env_version}" if @env_version.match(/^\d/)
return "master" if @env_version == master_gem_version
@env_version
end
def resolve_target_gem_version
return local_copy_version if env_version_is_path?
return @env_version[1..-1] if @env_version.match(/^v/)
return master_gem_version if @env_version == "master"
@env_version
end
def master_gem_version
"3.1.0.pre1"
end
end
|
