Class: Origami::FDF

Inherits:
Object
  • Object
show all
Defined in:
lib/origami/extensions/fdf.rb,
lib/origami/parsers/fdf.rb

Overview

Class representing an AcroForm Forms Data Format file.

Defined Under Namespace

Classes: Header, Parser, Revision

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ FDF

:nodoc:



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# File 'lib/origami/extensions/fdf.rb', line 106

def initialize #:nodoc:
  @header = FDF::Header.new
  @revisions = [ Revision.new(self) ]
  @revisions.first.trailer = Trailer.new
end

Instance Attribute Details

#header ⇒ Object

Returns the value of attribute header.



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# File 'lib/origami/extensions/fdf.rb', line 104

def header
  @header
end

#revisions ⇒ Object

Returns the value of attribute revisions.



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# File 'lib/origami/extensions/fdf.rb', line 104

def revisions
  @revisions
end

Instance Method Details

#<<(object) ⇒ Object 



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# File 'lib/origami/extensions/fdf.rb', line 132

def <<(object)
  
  object.set_indirect(true)
  
  if object.no.zero?
  maxno = 1
    while get_object(maxno) do maxno = maxno.succ end
    
    object.generation = 0
    object.no = maxno
  end
  
  @revisions.first.body[object.reference] = object
  
  object.reference
end

#append_subobj(root, objset) ⇒ Object 



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# File 'lib/origami/extensions/fdf.rb', line 113

def append_subobj(root, objset)
  if objset.find{ |o| o.object_id == root.object_id }.nil?
    objset << root
    if root.is_a?(Array) or root.is_a?(Dictionary)
      root.each { |subobj| append_subobj(subobj, objset) unless subobj.is_a?(Reference) }
    end
  end
end

#Catalog ⇒ Object 



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# File 'lib/origami/extensions/fdf.rb', line 149

def Catalog
  get_object(@trailer.Root)
end

#objects ⇒ Object 



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# File 'lib/origami/extensions/fdf.rb', line 112

def objects
  def append_subobj(root, objset)
    if objset.find{ |o| o.object_id == root.object_id }.nil?
      objset << root
      if root.is_a?(Array) or root.is_a?(Dictionary)
        root.each { |subobj| append_subobj(subobj, objset) unless subobj.is_a?(Reference) }
      end
    end
  end
  
  objset = []
  @revisions.first.body.values.each do |object|
    unless object.is_a?(Reference)
      append_subobj(object, objset)
    end
  end
  
  objset
end

#save(filename) ⇒ Object Also known as: saveas 



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# File 'lib/origami/extensions/fdf.rb', line 153

def save(filename)
  
  bin = ""
  bin << @header.to_s

  lastno, brange = 0, 0
    
  xrefs = [ XRef.new(0, XRef::LASTFREE, XRef::FREE) ]
  xrefsection = XRef::Section.new

  @revisions.first.body.values.sort.each { |obj|
    if (obj.no - lastno).abs > 1
      xrefsection << XRef::Subsection.new(brange, xrefs)
      brange = obj.no
      xrefs.clear
    end
    
    xrefs << XRef.new(bin.size, obj.generation, XRef::USED)
    lastno = obj.no

    bin << obj.to_s
  }
  
  xrefsection << XRef::Subsection.new(brange, xrefs)
  
  @xreftable = xrefsection
  @trailer ||= Trailer.new
  @trailer.Size = rev.body.size + 1
  @trailer.startxref = bin.size

  bin << @xreftable.to_s
  bin << @trailer.to_s

  fd = File.open(filename, "w").binmode
    fd << bin 
  fd.close
  
  show_entries
end