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#!/usr/bin/env ruby
# frozen_string_literal: true
require "pathname"
def run(*cmd)
return if system(*cmd, :out => IO::NULL)
raise "Running `#{cmd.join(" ")}` failed"
end
version = ENV.delete("RGV")
rubygems_path = Pathname.new(version).expand_path
unless rubygems_path.directory?
rubygems_path = Pathname.new("tmp/rubygems").expand_path
unless rubygems_path.directory?
rubygems_path.parent.mkpath unless rubygems_path.directory?
run("git", "clone", "https://github.com/rubygems/rubygems.git", rubygems_path.to_s)
end
Dir.chdir(rubygems_path) do
run("git remote update")
version = "v#{version}" if version =~ /\A\d/
run("git", "checkout", version, "--quiet")
end
end
rubygems_lib = rubygems_path + "lib"
ENV["RUBYOPT"] = %(-I#{rubygems_lib} #{ENV["RUBYOPT"]})
if $0 != __FILE__
ARGV.unshift($0)
elsif cmd = ARGV.first
possible_dirs = [
Pathname.new(__FILE__) + "..",
Pathname.new(__FILE__) + "../../exe",
rubygems_path + "bin",
]
cmd = possible_dirs.map do |dir|
dir.join(cmd).expand_path
end.find(&:file?)
ARGV[0] = cmd.to_s if cmd
end
exec(*ARGV)
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