mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
94 lines
2.8 KiB
Ruby
94 lines
2.8 KiB
Ruby
# frozen_string_literal: true
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module Bundler
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#
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# This class handles installing and switching to the version of bundler needed
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# by an application.
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#
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class SelfManager
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def restart_with_locked_bundler_if_needed
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return unless needs_switching? && installed?
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restart_with_locked_bundler
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end
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def install_locked_bundler_and_restart_with_it_if_needed
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return unless needs_switching?
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install_and_restart_with_locked_bundler
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end
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private
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def install_and_restart_with_locked_bundler
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bundler_dep = Gem::Dependency.new("bundler", lockfile_version)
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spec = fetch_spec_for(bundler_dep)
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return if spec.nil?
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Bundler.ui.info \
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"Bundler #{current_version} is running, but your lockfile was generated with #{lockfile_version}. " \
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"Installing Bundler #{lockfile_version} and restarting using that version."
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spec.source.install(spec)
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rescue StandardError => e
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Bundler.ui.trace e
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Bundler.ui.warn "There was an error installing the locked bundler version (#{lockfile_version}), rerun with the `--verbose` flag for more details. Going on using bundler #{current_version}."
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else
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restart_with_locked_bundler
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end
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def fetch_spec_for(bundler_dep)
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source = Bundler::Source::Rubygems.new("remotes" => "https://rubygems.org")
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source.remote!
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source.add_dependency_names("bundler")
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spec = source.specs.search(bundler_dep).first
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if spec.nil?
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Bundler.ui.warn "Your lockfile is locked to a version of bundler (#{lockfile_version}) that doesn't exist at https://rubygems.org/. Going on using #{current_version}"
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end
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spec
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end
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def restart_with_locked_bundler
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configured_gem_home = ENV["GEM_HOME"]
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configured_gem_path = ENV["GEM_PATH"]
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cmd = [$PROGRAM_NAME, *ARGV]
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cmd.unshift(Gem.ruby) unless File.executable?($PROGRAM_NAME)
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Bundler.with_original_env do
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Kernel.exec(
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{ "GEM_HOME" => configured_gem_home, "GEM_PATH" => configured_gem_path, "BUNDLER_VERSION" => lockfile_version },
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*cmd
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)
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end
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end
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def needs_switching?
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ENV["BUNDLER_VERSION"].nil? &&
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Bundler.rubygems.supports_bundler_trampolining? &&
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SharedHelpers.in_bundle? &&
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lockfile_version &&
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!lockfile_version.end_with?(".dev") &&
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lockfile_version != current_version &&
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!updating?
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end
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def updating?
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"update".start_with?(ARGV.first || " ") && ARGV[1..-1].any? {|a| a.start_with?("--bundler") }
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end
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def installed?
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Bundler.configure
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Bundler.rubygems.find_bundler(lockfile_version)
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end
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def current_version
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@current_version ||= Bundler::VERSION
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end
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def lockfile_version
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@lockfile_version ||= Bundler::LockfileParser.bundled_with
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end
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end
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end
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