Class: DragonflyPdf::Processors::Rotate

Inherits:
Object
  • Object
show all
Defined in:
lib/dragonfly_pdf/processors/rotate.rb

Instance Method Summary collapse

Instance Method Details

#call(content, arg) ⇒ Object

Raises:



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# File 'lib/dragonfly_pdf/processors/rotate.rb', line 4

def call(content, arg)
  raise UnsupportedFormat unless content.ext
  raise UnsupportedFormat unless SUPPORTED_FORMATS.include?(content.ext.downcase)

  rotate_args = case arg
                when String, Symbol
                  raise ArgumentError unless arg.to_s =~ /north|south|east|west|left|right|down/i
                  "1-end#{arg}"
                when Hash
                  pdf_properties = DragonflyPdf::Analysers::PdfProperties.new.call(content)
                  pdf_properties['page_numbers'].map { |page| [page, arg[page]].compact.join }.join(' ')
  end

  content.shell_update(ext: 'pdf') do |old_path, new_path|
    "#{pdftk_command} \"#{old_path}\" cat #{rotate_args} output #{new_path}"
  end
end