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#!/usr/bin/env ruby
# frozen_string_literal: true
require "rubygems"
m = Module.new do
extend self
def invoked_as_script?
File.expand_path($PROGRAM_NAME) == File.expand_path(__FILE__)
end
def cli_arg_version
return unless invoked_as_script? # don't want to hijack other binstubs
return unless "update".start_with?(ARGV.first || " ") # must be running `bundle update`
bundler_version = nil
update_index = nil
ARGV.each_with_index do |a, i|
bundler_version = a if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN
next unless a =~ /\A--bundler(?:[= ](#{Gem::Version::VERSION_PATTERN}))?\z/
bundler_version = Regexp.last_match(1) || ">= 0.a"
update_index = i
end
bundler_version
end
def gemfile
File.expand_path("../Gemfile", __dir__)
end
def lockfile
"#{gemfile}.lock"
end
def lockfile_version
lockfile_contents = File.read(lockfile)
regexp = /\n\nBUNDLED WITH\n\s{2,}(#{Gem::Version::VERSION_PATTERN})\n/
regexp.match(lockfile_contents)[1]
end
def bundler_version
@bundler_version ||= cli_arg_version || lockfile_version
end
def load_bundler!
ENV["BUNDLE_GEMFILE"] ||= gemfile
activate_bundler(bundler_version)
end
def activate_bundler(bundler_version)
gem "bundler", bundler_version
end
end
m.load_bundler!
load Gem.bin_path("bundler", "bundle") if m.invoked_as_script?
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