Module: FileUtils

Included in:
RakeFileUtils
Defined in:
lib/rake/file_utils.rb

Overview

########################################################################### This a FileUtils extension that defines several additional commands to be added to the FileUtils utility functions.

Constant Summary collapse

RUBY = 
File.join(
Config::CONFIG['bindir'],
Config::CONFIG['ruby_install_name'] + Config::CONFIG['EXEEXT']).
sub(/.*\s.*/m, '"\&"')
LN_SUPPORTED = 
[true]

Instance Method Summary collapse

Instance Method Details

#ruby(*args, &block) ⇒ Object

Run a Ruby interpreter with the given arguments.

Example:

ruby %{-pe '$_.upcase!' <README}



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# File 'lib/rake/file_utils.rb', line 66

def ruby(*args,&block)
  options = (Hash === args.last) ? args.pop : {}
  if args.length > 1 then
    sh(*([RUBY] + args + [options]), &block)
  else
    sh("#{RUBY} #{args.first}", options, &block)
  end
end

#safe_ln(*args) ⇒ Object

Attempt to do a normal file link, but fall back to a copy if the link

fails.



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# File 'lib/rake/file_utils.rb', line 79

def safe_ln(*args)
  unless LN_SUPPORTED[0]
    cp(*args)
  else
    begin
      ln(*args)
    rescue StandardError, NotImplementedError => ex
      LN_SUPPORTED[0] = false
      cp(*args)
    end
  end
end

#sh(*cmd, &block) ⇒ Object

Run the system command cmd. If multiple arguments are given the command is not run with the shell (same semantics as Kernel::exec and Kernel::system).

Example:

sh %{ls -ltr}

sh 'ls', 'file with spaces'

# check exit status after command runs
sh %{grep pattern file} do |ok, res|
  if ! ok
    puts "pattern not found (status = #{res.exitstatus})"
  end
end



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# File 'lib/rake/file_utils.rb', line 30

def sh(*cmd, &block)
  options = (Hash === cmd.last) ? cmd.pop : {}
  unless block_given?
    show_command = cmd.join(" ")
    show_command = show_command[0,42] + "..." unless $trace
    # TODO code application logic heref show_command.length > 45
    block = lambda { |ok, status|
      ok or fail "Command failed with status (#{status.exitstatus}): [#{show_command}]"
    }
  end
  if RakeFileUtils.verbose_flag == :default
    options[:verbose] = true
  else
    options[:verbose] ||= RakeFileUtils.verbose_flag
  end
  options[:noop]    ||= RakeFileUtils.nowrite_flag
  rake_check_options options, :noop, :verbose
  rake_output_message cmd.join(" ") if options[:verbose]
  unless options[:noop]
    res = rake_system(*cmd)
    status = $?
    status = PseudoStatus.new(1) if !res && status.nil?
    block.call(res, status)
  end
end

#split_all(path) ⇒ Object

Split a file path into individual directory names.

Example:

split_all("a/b/c") =>  ['a', 'b', 'c']



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# File 'lib/rake/file_utils.rb', line 97

def split_all(path)
  head, tail = File.split(path)
  return [tail] if head == '.' || tail == '/'
  return [head, tail] if head == '/'
  return split_all(head) + [tail]
end