Class: Pdfrb::Model::Type::FileTrailer

Inherits:
Cos::Dictionary show all
Defined in:
lib/pdfrb/model/type/file_trailer.rb

Overview

File trailer dict (s7.5.5). Root of the cross-reference chain. Fields: /Size, /Prev, /Root, /Encrypt, /Info, /ID, /XRefStm, /AuthCode, /AdditionalStreams, /DocChecksum.

Instance Attribute Summary

Attributes inherited from Object

#document, #gen, #oid, #value

Instance Method Summary collapse

Methods inherited from Cos::Dictionary

#[], #[]=, arlington_available?, arlington_default, arlington_key_to_symbol, arlington_loaded_for?, arlington_mark_loaded, arlington_object, arlington_one_type_to_ruby, arlington_required?, arlington_types_to_ruby, arlington_version, define_field, define_field_from_arlington, #delete, #each, each_field, #each_raw, #empty?, field, #initialize, #key?, #keys, lookup_type, own_fields, #pdf_type, register_type, type_map, #validate

Methods inherited from Object

#==, define_type, #deref, #indirect?, #initialize, #must_be_indirect?, #pdf_type, pdf_type

Constructor Details

This class inherits a constructor from Pdfrb::Model::Cos::Dictionary

Instance Method Details

#current_id ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 41

def current_id
  return nil unless has_id?

  arr = id.is_a?(Pdfrb::Model::PdfArray) ? id.to_a : id
  arr[1] || arr[0]
end

#doc_checksum ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 20

def doc_checksum; self[:DocChecksum]; end

#encrypt ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 16

def encrypt; self[:Encrypt]; end

#encrypted? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pdfrb/model/type/file_trailer.rb', line 22

def encrypted?
  !!encrypt
end

#has_id? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pdfrb/model/type/file_trailer.rb', line 30

def has_id?
  id.is_a?(Array) && id.size == 2
end

#id ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 18

def id; self[:ID]; end

#incremental? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pdfrb/model/type/file_trailer.rb', line 26

def incremental?
  !!prev
end

#info ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 17

def info; self[:Info]; end

#original_id ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 34

def original_id
  return nil unless has_id?

  arr = id.is_a?(Pdfrb::Model::PdfArray) ? id.to_a : id
  arr[0]
end

#prev ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 14

def prev; self[:Prev]; end

#resolved_encrypt ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 60

def resolved_encrypt
  return nil unless encrypt && document

  document.object(encrypt)
end

#resolved_info ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 54

def resolved_info
  return nil unless info && document

  document.object(info)
end

#resolved_root ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 48

def resolved_root
  return nil unless root && document

  document.object(root)
end

#root ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 15

def root; self[:Root]; end

#size ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 13

def size; self[:Size]; end

#xref_stream_offset ⇒ Object 



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# File 'lib/pdfrb/model/type/file_trailer.rb', line 19

def xref_stream_offset; self[:XRefStm]; end