Class: ASFop

Inherits:

Object

• Object
• ASFop

show all

Defined in:

backend/app/lib/AS_fop.rb

Instance Attribute Summary (collapse)

• - (Object) output

  Returns the value of attribute output.

• - (Object) source

  Returns the value of attribute source.

• - (Object) xslt

  Returns the value of attribute xslt.

Instance Method Summary (collapse)

• - (ASFop) initialize(source, output = nil) constructor

  A new instance of ASFop.

• - (Object) to_fo
• - (Object) to_pdf

  returns a temp file with the converted PDF.

• - (Object) to_pdf_stream

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# File 'backend/app/lib/AS_fop.rb', line 23

def initialize(source, output= nil)  
 @source = source
 @output = output ? output : ASUtils.tempfile('fop.pdf') 
 @xslt = File.read( StaticAssetFinder.new(File.join('stylesheets')).find('as-ead-pdf.xsl')) 
end

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# File 'backend/app/lib/AS_fop.rb', line 20

def output
  @output
end

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# File 'backend/app/lib/AS_fop.rb', line 19

def source
  @source
end

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# File 'backend/app/lib/AS_fop.rb', line 21

def xslt
  @xslt
end

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# File 'backend/app/lib/AS_fop.rb', line 30

def to_fo
  transformer = Saxon.XSLT(@xslt, system_id: File.join(ASUtils.find_base_directory, 'stylesheets', 'as-ead-pdf.xsl') )
  transformer.transform(Saxon.XML(@source)).to_s
end

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# File 'backend/app/lib/AS_fop.rb', line 36

def to_pdf
  begin 
    fo = StringIO.new(to_fo).to_inputstream
    fopfac = FopFactory.newInstance
    fopfac.setBaseURL( File.join(ASUtils.find_base_directory, 'stylesheets') ) 
    fop = fopfac.newFop(MimeConstants::MIME_PDF, @output.to_outputstream) 
    transformer = TransformerFactory.newInstance.newTransformer()
    res = SAXResult.new(fop.getDefaultHandler)
    transformer.transform(StreamSource.new(fo), res)
  ensure
   @output.close
  end
  @output 
end

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# File 'backend/app/lib/AS_fop.rb', line 51

def to_pdf_stream
  begin 
    fo = StringIO.new(to_fo).to_inputstream  
    fop = FopFactory.newInstance.newFop(MimeConstants::MIME_PDF, @output.to_outputstream)
    transformer = TransformerFactory.newInstance.newTransformer()
    res = SAXResult.new(fop.getDefaultHandler)
    transformer.transform(StreamSource.new(fo), res)
    @output.rewind
    @output.read
  ensure
   @output.close
   @output.unlink 
  end
end