Module: ImageProcessing::MiniMagick

Extended by:
Chainable
Defined in:
lib/image_processing/mini_magick.rb

Defined Under Namespace

Classes: Processor

Constant Summary collapse

INHERIT_FDS_MINIMUM_VERSION =

mini_magick gained inherit_fds: on MiniMagick::Shell#execute in 5.4.0.

Gem::Version.new("5.4.0")

Class Method Summary collapse

Methods included from Chainable

apply, branch, call, convert, instrumenter, loader, operation, saver, source

Class Method Details

.convert_shim(inherit_fds: nil, &block) ⇒ Object 



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

def self.convert_shim(inherit_fds: nil, &block)
  if inherit_fds && ::MiniMagick.version < INHERIT_FDS_MINIMUM_VERSION
    raise LoadError, "The `inherit_fds` loader option requires mini_magick #{INHERIT_FDS_MINIMUM_VERSION} or newer, but mini_magick #{::MiniMagick.version} is loaded. Please upgrade the gem."
  end

  options = inherit_fds ? { inherit_fds: inherit_fds } : {}

  if ::MiniMagick.respond_to?(:convert)
    ::MiniMagick.convert(**options, &block)
  else
    ::MiniMagick::Tool::Convert.new(**options, &block)
  end
end

.valid_image?(file) ⇒ Boolean

Returns whether the given image file is processable.

Returns:

  • (Boolean) 


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# File 'lib/image_processing/mini_magick.rb', line 30

def self.valid_image?(file)
  convert_shim do |convert|
    convert << file.path
    convert << "null:"
  end
  true
rescue ::MiniMagick::Error
  false
end