Module: Veewee::Provider::Core::Helper::Shell

Included in:
Box, Provider
Defined in:
lib/veewee/provider/core/helper/shell.rb

Instance Method Summary collapse

Instance Method Details

#shell_exec(command, options = {}) ⇒ Object

blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/185404 This should work on windows too now This will result in a ShellResult structure with stdout, stderr and status


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# File 'lib/veewee/provider/core/helper/shell.rb', line 23

def shell_exec(command, options = {})
  defaults = { :mute => true, :status => 0, :stderr => "&1" }
  options  = defaults.merge(options)
  result   = ShellResult.new("","",-1)
  ui.info "Executing #{command}" unless options[:mute]
  env.logger.debug "Command: \"#{command}\""
  env.logger.debug "Output:"
  env.logger.debug "-------"
  escaped_command = command
  stderr_redirect = options[:stderr]? options[:stderr] : "&1"
  io_options = {}
  io_options[:external_encoding] = options[:external_encoding] if options[:external_encoding]

  IO.popen("#{escaped_command}"+ " 2>#{stderr_redirect}", io_options) do |pipe|
    pipe.each_line do |line|
      result.stdout += line
      ui.info(line, :new_line => false)  unless options[:mute]
      env.logger.debug(line.chomp)
    end
    result.status = Process.waitpid2(pipe.pid)[1].exitstatus
    if
      result.status.to_i != options[:status]
    then
      ui.error "Error: We executed a shell command and the exit status was not #{options[:status]}"
      ui.error "- Command :#{command}."
      ui.error "- Exitcode :#{result.status}."
      ui.error "- Output   :\n#{result.stdout}"
      raise Veewee::Error,"Wrong exit code for command #{command}"
    end
  end
  return result
end