Class: DBF::Memo::Foxpro

Inherits:
Base
  • Object
show all
Defined in:
lib/dbf/memo/foxpro.rb

Constant Summary collapse

FPT_HEADER_SIZE = 
512

Constants inherited from Base

Base::BLOCK_HEADER_SIZE, Base::BLOCK_SIZE

Instance Method Summary collapse

Methods inherited from Base

#close, #closed?, #get, #initialize, open

Constructor Details

This class inherits a constructor from DBF::Memo::Base

Instance Method Details

#build_memo(start_block) ⇒ Object

:nodoc:



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# File 'lib/dbf/memo/foxpro.rb', line 6

def build_memo(start_block) # :nodoc:
  @data.seek offset(start_block)

  memo_type, memo_size, memo_string = @data.read(block_size).unpack('NNa*')
  return nil unless memo_type == 1 && memo_size > 0

  if memo_size > block_content_size
    memo_string << @data.read(content_size(memo_size))
  else
    memo_string = memo_string[0, memo_size]
  end
  memo_string
rescue StandardError
  nil
end