mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
100 lines
2.8 KiB
Ruby
100 lines
2.8 KiB
Ruby
# frozen_string_literal: true
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require_relative "../current_ruby"
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module Bundler
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class CLI::Exec
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attr_reader :options, :args, :cmd
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TRAPPED_SIGNALS = %w[INT].freeze
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def initialize(options, args)
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@options = options
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@cmd = args.shift
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@args = args
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if Bundler.current_ruby.ruby_2? && !Bundler.current_ruby.jruby?
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@args << { :close_others => !options.keep_file_descriptors? }
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elsif options.keep_file_descriptors?
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Bundler.ui.warn "Ruby version #{RUBY_VERSION} defaults to keeping non-standard file descriptors on Kernel#exec."
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end
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end
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def run
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validate_cmd!
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SharedHelpers.set_bundle_environment
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if bin_path = Bundler.which(cmd)
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if !Bundler.settings[:disable_exec_load] && ruby_shebang?(bin_path)
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return kernel_load(bin_path, *args)
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end
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kernel_exec(bin_path, *args)
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else
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# exec using the given command
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kernel_exec(cmd, *args)
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end
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end
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private
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def validate_cmd!
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return unless cmd.nil?
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Bundler.ui.error "bundler: exec needs a command to run"
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exit 128
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end
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def kernel_exec(*args)
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ui = Bundler.ui
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Bundler.ui = nil
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Kernel.exec(*args)
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rescue Errno::EACCES, Errno::ENOEXEC
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Bundler.ui = ui
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Bundler.ui.error "bundler: not executable: #{cmd}"
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exit 126
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rescue Errno::ENOENT
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Bundler.ui = ui
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Bundler.ui.error "bundler: command not found: #{cmd}"
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Bundler.ui.warn "Install missing gem executables with `bundle install`"
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exit 127
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end
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def kernel_load(file, *args)
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args.pop if args.last.is_a?(Hash)
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ARGV.replace(args)
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$0 = file
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Process.setproctitle(process_title(file, args)) if Process.respond_to?(:setproctitle)
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ui = Bundler.ui
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Bundler.ui = nil
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require_relative "../setup"
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TRAPPED_SIGNALS.each {|s| trap(s, "DEFAULT") }
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Kernel.load(file)
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rescue SystemExit, SignalException
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raise
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rescue Exception => e # rubocop:disable Lint/RescueException
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Bundler.ui = ui
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Bundler.ui.error "bundler: failed to load command: #{cmd} (#{file})"
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backtrace = e.backtrace ? e.backtrace.take_while {|bt| !bt.start_with?(__FILE__) } : []
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abort "#{e.class}: #{e.message}\n #{backtrace.join("\n ")}"
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end
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def process_title(file, args)
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"#{file} #{args.join(" ")}".strip
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end
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def ruby_shebang?(file)
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possibilities = [
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"#!/usr/bin/env ruby\n",
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"#!/usr/bin/env jruby\n",
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"#!/usr/bin/env truffleruby\n",
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"#!#{Gem.ruby}\n",
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]
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if File.zero?(file)
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Bundler.ui.warn "#{file} is empty"
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return false
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end
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first_line = File.open(file, "rb") {|f| f.read(possibilities.map(&:size).max) }
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possibilities.any? {|shebang| first_line.start_with?(shebang) }
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end
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end
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end
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