All major document mime types (Microsoft Office, Apple iWork, Adobe PDF) as a Ruby Module

document_types.rb

module DocumentFileTypes  
  module Microsoft
    WORD = %w(
      application/msword
      application/vnd.openxmlformats-officedocument.wordprocessingml.document
      application/vnd.openxmlformats-officedocument.wordprocessingml.template
      application/vnd.ms-word.document.macroEnabled.12
      application/vnd.ms-word.template.macroEnabled.12
    ).freeze
    
    EXCEL = %w(
      application/vnd.ms-excel
      application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
      application/vnd.openxmlformats-officedocument.spreadsheetml.template
      application/vnd.ms-excel.sheet.macroEnabled.12
      application/vnd.ms-excel.template.macroEnabled.12
      application/vnd.ms-excel.addin.macroEnabled.12
      application/vnd.ms-excel.sheet.binary.macroEnabled.12
    ).freeze
    
    POWER_POINT = %w(
      application/vnd.ms-powerpoint
      application/vnd.openxmlformats-officedocument.presentationml.presentation
      application/vnd.openxmlformats-officedocument.presentationml.template
      application/vnd.openxmlformats-officedocument.presentationml.slideshow
      application/vnd.ms-powerpoint.addin.macroEnabled.12
      application/vnd.ms-powerpoint.presentation.macroEnabled.12
      application/vnd.ms-powerpoint.template.macroEnabled.12
      application/vnd.ms-powerpoint.slideshow.macroEnabled.12
    ).freeze
  end
  
  module Apple
    IWORK = ['application/x-iwork-pages-sffpages'].freeze
  end
  
  module Adobe
    PDF = ["application/pdf"].freeze
  end
  
  TEXT_DOC_MIME_TYPES     = Microsoft::WORD + ['text/plain']
  SPREADSHEET_MIME_TYPES  = Microsoft::EXCEL + ['text/csv']
  PRESENTATION_MIME_TYPES = Microsoft::POWER_POINT
  
  ALL = TEXT_DOC_MIME_TYPES + SPREADSHEET_MIME_TYPES + PRESENTATION_MIME_TYPES + Apple::IWORK + Adobe::PDF
end