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