138 lines
3.8 KiB
Ruby
138 lines
3.8 KiB
Ruby
# frozen_string_literal: true
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require "rbconfig"
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require "fileutils"
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#--
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# This a FileUtils extension that defines several additional commands to be
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# added to the FileUtils utility functions.
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module FileUtils
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# Path to the currently running Ruby program
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RUBY = ENV["RUBY"] || File.join(
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RbConfig::CONFIG["bindir"],
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RbConfig::CONFIG["ruby_install_name"] + RbConfig::CONFIG["EXEEXT"]).
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sub(/.*\s.*/m, '"\&"')
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# Run the system command +cmd+. If multiple arguments are given the command
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# is run directly (without the shell, same semantics as Kernel::exec and
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# Kernel::system).
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#
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# It is recommended you use the multiple argument form over interpolating
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# user input for both usability and security reasons. With the multiple
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# argument form you can easily process files with spaces or other shell
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# reserved characters in them. With the multiple argument form your rake
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# tasks are not vulnerable to users providing an argument like
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# <code>; rm # -rf /</code>.
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#
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# If a block is given, upon command completion the block is called with an
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# OK flag (true on a zero exit status) and a Process::Status object.
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# Without a block a RuntimeError is raised when the command exits non-zero.
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#
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# Examples:
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#
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# sh 'ls -ltr'
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#
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# sh 'ls', 'file with spaces'
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#
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# # check exit status after command runs
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# sh %{grep pattern file} do |ok, res|
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# if ! ok
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# puts "pattern not found (status = #{res.exitstatus})"
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# end
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# end
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#
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def sh(*cmd, &block)
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options = (Hash === cmd.last) ? cmd.pop : {}
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shell_runner = block_given? ? block : create_shell_runner(cmd)
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set_verbose_option(options)
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verbose = options.delete :verbose
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noop = options.delete(:noop) || Rake::FileUtilsExt.nowrite_flag
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Rake.rake_output_message sh_show_command cmd if verbose
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unless noop
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res = (Hash === cmd.last) ? system(*cmd) : system(*cmd, options)
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status = $?
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status = Rake::PseudoStatus.new(1) if !res && status.nil?
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shell_runner.call(res, status)
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end
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end
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def create_shell_runner(cmd) # :nodoc:
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show_command = sh_show_command cmd
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show_command = show_command[0, 42] + "..." unless $trace
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lambda do |ok, status|
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ok or
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fail "Command failed with status (#{status.exitstatus}): " +
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"[#{show_command}]"
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end
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end
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private :create_shell_runner
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def sh_show_command(cmd) # :nodoc:
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cmd = cmd.dup
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if Hash === cmd.first
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env = cmd.first
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env = env.map { |name, value| "#{name}=#{value}" }.join " "
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cmd[0] = env
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end
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cmd.join " "
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end
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private :sh_show_command
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def set_verbose_option(options) # :nodoc:
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unless options.key? :verbose
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options[:verbose] =
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(Rake::FileUtilsExt.verbose_flag == Rake::FileUtilsExt::DEFAULT) ||
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Rake::FileUtilsExt.verbose_flag
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end
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end
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private :set_verbose_option
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# Run a Ruby interpreter with the given arguments.
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#
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# Example:
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# ruby %{-pe '$_.upcase!' <README}
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#
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def ruby(*args, &block)
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options = (Hash === args.last) ? args.pop : {}
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if args.length > 1
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sh(*([RUBY] + args + [options]), &block)
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else
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sh("#{RUBY} #{args.first}", options, &block)
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end
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end
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LN_SUPPORTED = [true]
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# Attempt to do a normal file link, but fall back to a copy if the link
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# fails.
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def safe_ln(*args)
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if ! LN_SUPPORTED[0]
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cp(*args)
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else
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begin
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ln(*args)
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rescue StandardError, NotImplementedError
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LN_SUPPORTED[0] = false
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cp(*args)
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end
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end
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end
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# Split a file path into individual directory names.
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#
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# Example:
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# split_all("a/b/c") => ['a', 'b', 'c']
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#
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def split_all(path)
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head, tail = File.split(path)
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return [tail] if head == "." || tail == "/"
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return [head, tail] if head == "/"
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return split_all(head) + [tail]
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end
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end
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