class Bundler::CLI::Exec

Constants

TRAPPED_SIGNALS

Attributes

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

Public Class Methods

new(options, args) click to toggle source
# File lib/bundler/cli/exec.rb, line 11
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 23
def run
  validate_cmd!
  SharedHelpers.set_bundle_environment
  if bin_path = Bundler.which(cmd)
    if !Bundler.settings[:disable_exec_load] && ruby_shebang?(bin_path)
      return kernel_load(bin_path, *args)
    end
    # First, try to exec directly to something in PATH
    if Bundler.current_ruby.jruby_18?
      kernel_exec(bin_path, *args)
    else
      kernel_exec([bin_path, cmd], *args)
    end
  else
    # 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 50
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 65
def kernel_load(file, *args)
  args.pop if args.last.is_a?(Hash)
  ARGV.replace(args)
  $0 = file
  Process.setproctitle(process_title(file, args)) if Process.respond_to?(:setproctitle)
  ui = Bundler.ui
  Bundler.ui = nil
  require "bundler/setup"
  TRAPPED_SIGNALS.each {|s| trap(s, "DEFAULT") }
  Kernel.load(file)
rescue SystemExit, SignalException
  raise
rescue Exception => e # rubocop:disable Lint/RescueException
  Bundler.ui = ui
  Bundler.ui.error "bundler: failed to load command: #{cmd} (#{file})"
  backtrace = e.backtrace ? e.backtrace.take_while {|bt| !bt.start_with?(__FILE__) } : []
  abort "#{e.class}: #{e.message}\n  #{backtrace.join("\n  ")}"
end
process_title(file, args) click to toggle source
# File lib/bundler/cli/exec.rb, line 84
def process_title(file, args)
  "#{file} #{args.join(" ")}".strip
end
ruby_shebang?(file) click to toggle source
# File lib/bundler/cli/exec.rb, line 88
def ruby_shebang?(file)
  possibilities = [
    "#!/usr/bin/env ruby\n",
    "#!/usr/bin/env jruby\n",
    "#!/usr/bin/env truffleruby\n",
    "#!#{Gem.ruby}\n",
  ]

  if File.zero?(file)
    Bundler.ui.warn "#{file} is empty"
    return false
  end

  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 44
  def validate_cmd!
    return unless cmd.nil?
    Bundler.ui.error "bundler: exec needs a command to run"
    exit 128
  end

  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

  def kernel_load(file, *args)
    args.pop if args.last.is_a?(Hash)
    ARGV.replace(args)
    $0 = file
    Process.setproctitle(process_title(file, args)) if Process.respond_to?(:setproctitle)
    ui = Bundler.ui
    Bundler.ui = nil
    require "bundler/setup"
    TRAPPED_SIGNALS.each {|s| trap(s, "DEFAULT") }
    Kernel.load(file)
  rescue SystemExit, SignalException
    raise
  rescue Exception => e # rubocop:disable Lint/RescueException
    Bundler.ui = ui
    Bundler.ui.error "bundler: failed to load command: #{cmd} (#{file})"
    backtrace = e.backtrace ? e.backtrace.take_while {|bt| !bt.start_with?(__FILE__) } : []
    abort "#{e.class}: #{e.message}\n  #{backtrace.join("\n  ")}"
  end

  def process_title(file, args)
    "#{file} #{args.join(" ")}".strip
  end

  def ruby_shebang?(file)
    possibilities = [
      "#!/usr/bin/env ruby\n",
      "#!/usr/bin/env jruby\n",
      "#!/usr/bin/env truffleruby\n",
      "#!#{Gem.ruby}\n",
    ]

    if File.zero?(file)
      Bundler.ui.warn "#{file} is empty"
      return false
    end

    first_line = File.open(file, "rb") {|f| f.read(possibilities.map(&:size).max) }
    possibilities.any? {|shebang| first_line.start_with?(shebang) }
  end
end