Module: IO::Tee

Defined in:
lib/io/tee/version.rb,
lib/io/tee.rb

Constant Summary collapse

VERSION = 
"1.0.0"

Instance Method Summary collapse

Instance Method Details

#tee(filename, append: true) ⇒ Object 



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# File 'lib/io/tee.rb', line 4

def tee(filename, append: true)
  append_argument = append ? '--append' : ''
  tee_cmd = "tee #{append_argument} #{filename}"

  tee_output, tee_input = IO.pipe
  tee_pid = Process.spawn tee_cmd, in: tee_output, out: self

  reopen(tee_input)

  at_exit do
    sleep 0.05 # see doc/why-sleep.md
    Process.kill('TERM', tee_pid)
    Process.waitpid(tee_pid)
  end
end