Class: Rpdf2txt::Encoding

Inherits:
PdfObject show all
Defined in:
lib/rpdf2txt/object.rb

Instance Attribute Summary

Attributes inherited from PdfObject

#attributes, #decoder, #oid, #src

Instance Method Summary collapse

Methods inherited from PdfObject

#_parse_attributes, #build_tree, #catalogue_object, #decoded_stream, #extract_attribute_stream, #initialize, #parse_attributes, #revision_id

Constructor Details

This class inherits a constructor from Rpdf2txt::PdfObject

Instance Method Details

#convert_symbol(txt) ⇒ Object 



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# File 'lib/rpdf2txt/object.rb', line 259

def convert_symbol(txt)
  res = ''
  txt.each_byte { |byte|
    if(name = differences[byte])
      byte = Symbol.byte(name) || byte
    end
    res << byte
  }
  res
end

#differences ⇒ Object 



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# File 'lib/rpdf2txt/object.rb', line 242

def differences
  @differences or
  begin
    @differences = {}
    offset = 0
    idx = 0
    @attributes[:differences].each { |diff|
      if(/^\d+$/n.match(diff))
        offset = diff.to_i
      else
        @differences.store(offset + idx, diff[/\w+/n])
        idx += 1
      end
    }
    @differences
  end
end

#symbol_name(byte) ⇒ Object 



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# File 'lib/rpdf2txt/object.rb', line 269

def symbol_name(byte)
  differences[byte]
end