/usr/lib/ruby/vendor_ruby/bundler/cli/exec.rb is in ruby-bundler 1.13.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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require "bundler/current_ruby"
module Bundler
class CLI::Exec
attr_reader :options, :args, :cmd
RESERVED_SIGNALS = %w(SEGV BUS ILL FPE VTALRM KILL STOP).freeze
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
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
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"
signals = Signal.list.keys - RESERVED_SIGNALS
signals.each {|s| trap(s, "DEFAULT") }
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
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",
"#!#{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
end
end
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