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: Annotation, Catalog, Dictionary, Field, Header, IconFit, JavaScript, NamedPageReference, Page, Parser, Revision, Template

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parser = nil) ⇒ FDF

:nodoc:



210
211
212
213
214
215
216
217
 
# File 'lib/origami/extensions/fdf.rb', line 210

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

    init if parser.nil?
end

Instance Attribute Details

#header ⇒ Object

Returns the value of attribute header.



208
209
210
 
# File 'lib/origami/extensions/fdf.rb', line 208

def header
  @header
end

#revisions ⇒ Object

Returns the value of attribute revisions.



208
209
210
 
# File 'lib/origami/extensions/fdf.rb', line 208

def revisions
  @revisions
end

Class Method Details

.read(path, options = {}) ⇒ Object 



41
42
43
44
45
 
# File 'lib/origami/extensions/fdf.rb', line 41

def self.read(path, options = {})
    path = File.expand_path(path) if path.is_a?(::String)

    FDF::Parser.new(options).parse(path)
end

Instance Method Details

#<<(object) ⇒ Object Also known as: insert 



219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
 
# File 'lib/origami/extensions/fdf.rb', line 219

def <<(object)
    object.set_indirect(true)
    object.set_document(self)

    if object.no.zero?
        maxno = 1
        maxno = maxno.succ while get_object(maxno)

        object.generation = 0
        object.no = maxno
    end

    @revisions.first.body[object.reference] = object

    object.reference
end

#cast_object(reference, type) ⇒ Object

:nodoc:



255
256
257
258
259
260
261
262
263
264
265
 
# File 'lib/origami/extensions/fdf.rb', line 255

def cast_object(reference, type) #:nodoc:
    @revisions.each do |rev|
        if rev.body.include?(reference) and type < rev.body[reference].class
            rev.body[reference] = rev.body[reference].cast_to(type, @parser)

            rev.body[reference]
        else
            nil
        end
    end
end

#Catalog ⇒ Object 



267
268
269
 
# File 'lib/origami/extensions/fdf.rb', line 267

def Catalog
    get_object(@revisions.first.trailer.Root)
end

#get_object(no, generation = 0) ⇒ Object

:nodoc:



237
238
239
240
241
242
243
244
245
246
247
248
 
# File 'lib/origami/extensions/fdf.rb', line 237

def get_object(no, generation = 0) #:nodoc:
    case no
    when Reference
      target = no
    when ::Integer
      target = Reference.new(no, generation)
    when Origami::Object
      return no
    end

    @revisions.first.body[target]
end

#indirect_objects ⇒ Object Also known as: root_objects 



250
251
252
 
# File 'lib/origami/extensions/fdf.rb', line 250

def indirect_objects
    @revisions.inject([]) do |set, rev| set.concat(rev.objects) end
end

#save(path) ⇒ Object 



271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
 
# File 'lib/origami/extensions/fdf.rb', line 271

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

    lastno, brange = 0, 0

    xrefs = [ XRef.new(0, XRef::FIRSTFREE, 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

        obj.pre_build

        bin << obj.to_s

        obj.post_build
    }

    xrefsection << XRef::Subsection.new(brange, xrefs)

    @xreftable = xrefsection
    @trailer ||= Trailer.new
    @trailer.Size = @revisions.first.body.size + 1
    @trailer.startxref = bin.size

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

    if path.respond_to?(:write)
        io = path
    else
        path = File.expand_path(path)
        io = File.open(path, "wb", encoding: 'binary')
        close = true
    end

    begin
        io.write(bin)
    ensure
        io.close if close
    end

    self
end