# frozen_string_literal: true module Gem::BundlerVersionFinder def self.bundler_version v = ENV["BUNDLER_VERSION"] v ||= bundle_update_bundler_version return if v == true v ||= lockfile_version return unless v Gem::Version.new(v) end def self.prioritize!(specs) exact_match_index = specs.find_index {|spec| spec.version == bundler_version } return unless exact_match_index specs.unshift(specs.delete_at(exact_match_index)) end def self.bundle_update_bundler_version return unless File.basename($0) == "bundle".freeze return unless "update".start_with?(ARGV.first || " ") bundler_version = nil update_index = nil ARGV.each_with_index do |a, i| if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN bundler_version = a end next unless a =~ /\A--bundler(?:[= ](#{Gem::Version::VERSION_PATTERN}))?\z/ bundler_version = $1 || true update_index = i end bundler_version end private_class_method :bundle_update_bundler_version def self.lockfile_version return unless contents = lockfile_contents regexp = /\n\nBUNDLED WITH\n\s{2,}(#{Gem::Version::VERSION_PATTERN})\n/ return unless contents =~ regexp $1 end private_class_method :lockfile_version def self.lockfile_contents gemfile = ENV["BUNDLE_GEMFILE"] gemfile = nil if gemfile && gemfile.empty? unless gemfile begin Gem::Util.traverse_parents(Dir.pwd) do |directory| next unless gemfile = Gem::GEM_DEP_FILES.find {|f| File.file?(f.tap(&Gem::UNTAINT)) } gemfile = File.join directory, gemfile break end rescue Errno::ENOENT return end end return unless gemfile lockfile = case gemfile when "gems.rb" then "gems.locked" else "#{gemfile}.lock" end.dup.tap(&Gem::UNTAINT) return unless File.file?(lockfile) File.read(lockfile) end private_class_method :lockfile_contents end