Class: MiniMagick::Shell

Inherits:
Object
  • Object
show all
Defined in:
lib/mini_magick/shell.rb

Overview

Sends commands to the shell (more precisely, it sends commands directly to the operating system).

Instance Method Summary collapse

Constructor Details

#initialize(whiny = true) ⇒ Shell

Returns a new instance of Shell.



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# File 'lib/mini_magick/shell.rb', line 15

def initialize(whiny = true)
  @whiny = whiny
end

Instance Method Details

#execute(command) ⇒ Object 



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# File 'lib/mini_magick/shell.rb', line 34

def execute(command)
  stdout, stderr, status =
    MiniMagick.logger.debug(command.join(" ")) do
      Timeout.timeout(MiniMagick.timeout) do
        Open3.capture3(*command)
      end
    end

  [stdout, stderr, status.exitstatus]
rescue Errno::ENOENT
  ["", "executable not found: \"#{command.first}\"", 127]
end

#run(command) ⇒ Object 



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# File 'lib/mini_magick/shell.rb', line 19

def run(command)
  stdout, stderr, code = execute(command)

  case code
  when 1
    fail MiniMagick::Error, "`#{command.join(" ")}` failed with error:\n#{stderr}"
  when 127
    fail MiniMagick::Error, stderr
  end if @whiny

  $stderr.print(stderr)

  stdout
end