Method: CLIMarkdown::Converter#page

Defined in:

lib/mdless/converter.rb

#page(text, &callback) ⇒ Object

# File 'lib/mdless/converter.rb', line 552

def page(text, &callback)
  read_io, write_io = IO.pipe

  input = $stdin

  pid = Kernel.fork do
    write_io.close
    input.reopen(read_io)
    read_io.close

    # Wait until we have input before we start the pager
    IO.select [input]

    pager = which_pager
    MDLess.log.info("Using `#{pager.join(" ")}` as pager")
    begin
      exec(pager.join(" "))
    rescue SystemCallError => e
      MDLess.log.error(e)
      exit 1
    end
  end

  begin
    read_io.close
    write_io.write(text)
    write_io.close
  rescue SystemCallError
    exit 1
  end

  _, status = Process.waitpid2(pid)
  status.success?
end