class Bundler::CLI::Exec

Attributes

args[R]
cmd[R]
options[R]

Public Class Methods

new(options, args) click to toggle source
# File lib/bundler/cli/exec.rb, line 8
def initialize(options, args)
  @options = options
  @cmd = args.shift
  @args = args

  if Bundler.current_ruby.ruby_2? && !Bundler.current_ruby.jruby?
    @args << { :close_others => !options.keep_file_descriptors? }
  elsif options.keep_file_descriptors?
    Bundler.ui.warn "Ruby version #{RUBY_VERSION} defaults to keeping non-standard file descriptors on Kernel#exec."
  end
end

Public Instance Methods

run() click to toggle source
# File lib/bundler/cli/exec.rb, line 20
def run
  validate_cmd!
  SharedHelpers.set_bundle_environment
  if bin_path = Bundler.which(cmd)
    return kernel_load(bin_path, *args) if ruby_shebang?(bin_path)
    # First, try to exec directly to something in PATH
    kernel_exec([bin_path, cmd], *args)
  else
    # Just exec using the given command
    kernel_exec(cmd, *args)
  end
end

Private Instance Methods

kernel_exec(*args) click to toggle source
# File lib/bundler/cli/exec.rb, line 41
def kernel_exec(*args)
  ui = Bundler.ui
  Bundler.ui = nil
  Kernel.exec(*args)
rescue Errno::EACCES, Errno::ENOEXEC
  Bundler.ui = ui
  Bundler.ui.error "bundler: not executable: #{cmd}"
  exit 126
rescue Errno::ENOENT
  Bundler.ui = ui
  Bundler.ui.error "bundler: command not found: #{cmd}"
  Bundler.ui.warn "Install missing gem executables with `bundle install`"
  exit 127
end
kernel_load(file, *args) click to toggle source
# File lib/bundler/cli/exec.rb, line 56
def kernel_load(file, *args)
  args.pop if args.last.is_a?(Hash)
  ARGV.replace(args)
  $0 = file
  ui = Bundler.ui
  Bundler.ui = nil
  require "bundler/setup"
  Kernel.load(file)
rescue SystemExit
  raise
rescue Exception => e # rubocop:disable Lint/RescueException
  Bundler.ui = ui
  Bundler.ui.error "bundler: failed to load command: #{cmd} (#{file})"
  backtrace = e.backtrace.take_while {|bt| !bt.start_with?(__FILE__) }
  abort "#{e.class}: #{e.message}\n  #{backtrace.join("\n  ")}"
end
ruby_shebang?(file) click to toggle source
# File lib/bundler/cli/exec.rb, line 73
def ruby_shebang?(file)
  possibilities = [
    "#!/usr/bin/env ruby\n",
    "#!#{Gem.ruby}\n",
  ]
  first_line = File.open(file, "rb") {|f| f.read(possibilities.map(&:size).max) }
  possibilities.any? {|shebang| first_line.start_with?(shebang) }
end
validate_cmd!() click to toggle source
# File lib/bundler/cli/exec.rb, line 35
def validate_cmd!
  return unless cmd.nil?
  Bundler.ui.error "bundler: exec needs a command to run"
  exit 128
end