Class: DragonflyPdf::Analysers::PdfProperties

Inherits:
Object
  • Object
show all
Defined in:
lib/dragonfly_pdf/analysers/pdf_properties.rb

Constant Summary collapse

NUMBER_OF_PAGES_REGEX = 
/NumberOfPages:\s*(\d+)/
PAGE_MEDIA_NUMBER_REGEX = 
/PageMediaNumber:\s*(\d+)/
PAGE_MEDIA_DIMENSIONS_REGEX = 
/PageMediaDimensions:\s*(\d+\,?\d+\.?\d+)\s*(\d+\,?\d+\.?\d+)/
PAGE_MEDIA_ROTATIONS_REGEX = 
/PageMediaRotation:\s*(\d+)/

Instance Method Summary collapse

Instance Method Details

#call(content, options = {}) ⇒ Object 



9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
# File 'lib/dragonfly_pdf/analysers/pdf_properties.rb', line 9

def call(content, options = {})
  return {} unless content.ext
  return {} unless SUPPORTED_FORMATS.include?(content.ext.downcase)

  data = `pdftk "#{content.path}" dump_data`

  page_count = extract_page_count(data)
  page_numbers = extract_page_numbers(data)
  page_dimensions = extract_page_dimensions(data)
  page_rotations = extract_page_rotations(data)
  aspect_ratios = calculate_aspect_ratios(page_dimensions)

  {
    'aspect_ratios' => aspect_ratios,
    'format' => content.ext.downcase,
    'page_count' => page_count,
    'page_dimensions' => page_dimensions,
    'page_numbers' => page_numbers,
    'page_rotations' => page_rotations,
  }
end