Class: ShellTastic::IO

Inherits:
Object
  • Object
show all
Extended by:
Utils
Defined in:
lib/shelltastic/command_io.rb

Class Method Summary collapse

Methods included from Utils

string_nil_or_blank?

Class Method Details

.popen(command, timer = ShellTastic::Timer) ⇒ Array, Hash

A wrapper around popen4

{ :output, :pid, :error, :start, :stop, :total_time, :exitstatus }

Parameters:

  • command (String) —

    command(s) to run

Returns:

  • (Array, Hash) —

    command_results the command results from shell

See Also:

  • ShellTastic::IO#Command#Command.run


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# File 'lib/shelltastic/command_io.rb', line 15

def popen(command, timer=ShellTastic::Timer)
  string_nil_or_blank?(command)
  command_results = {}
  begin
    start = timer.start
    return_code = Open4::popen4(command) do |pid, stdin, stdout, stderr|
                    command_results.store(:output,stdout.read.strip)
                    command_results.store(:pid,pid)
                    command_results.store(:error,stderr.read.strip)
                    stdin.close
                  end
    stop = timer.stop
    total_time = timer.total_time
    command_results.merge!(start: start, 
                           stop: stop,
                           command: command,
                           total_time: total_time, 
                           exitstatus: return_code.exitstatus)
  rescue Errno::ENOENT => e
    raise ShellTastic::CommandException.new("Shell command #{command} failed with status #{$?} and ERROR: #{e.message}")
  end
  command_results
end