Class: HandBrake::CLI::PopenRunner

Inherits:
Object
  • Object
show all
Defined in:
lib/handbrake/cli.rb

Overview

The default runner. Uses IO.popen to spawn HandBrakeCLI. General use of this library does not require monkeying with this class.

If you have non-general use case, a replacement runner must have a method matching the signature of #run.

See Also:

Instance Method Summary collapse

Constructor Details

#initialize(cli_instance) ⇒ PopenRunner

Returns a new instance of PopenRunner.

Parameters:

  • cli_instance (CLI) —

    the HandBrake::CLI instance for which this runner will execute.



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# File 'lib/handbrake/cli.rb', line 323

def initialize(cli_instance)
  @cli = cli_instance
end

Instance Method Details

#command(arguments) ⇒ String

Returns the concatentated command string to pass to IO.popen.

Returns:

  • (String) —

    the concatentated command string to pass to IO.popen.



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# File 'lib/handbrake/cli.rb', line 362

def command(arguments)
  "'#{arguments.unshift(@cli.bin_path).collect { |a| a.gsub(%r(')) { %('\\\'') } }.join("' '")}' 2>&1"
end

#run(arguments) ⇒ RunnerResult

Parameters:

  • arguments (Array<String>) —

    the arguments to pass to HandBrakeCLI

Returns:



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# File 'lib/handbrake/cli.rb', line 340

def run(arguments)
  output = ''

  cmd = command(arguments)

  $stderr.puts "Spawning HandBrakeCLI using #{cmd.inspect}" if @cli.trace?
  if @cli.dry_run?
    puts cmd
    RunnerResult.new('', 0)
  else
    IO.popen(cmd) do |io|
      while line = io.read(60)
        output << line
        $stderr.write(line) if @cli.trace?
      end
    end
    RunnerResult.new(output, $?)
  end
end