Method: MemFs::IO#seek

Defined in:
lib/memfs/io.rb

#seek(amount, whence = ::IO::SEEK_SET) ⇒ Object 



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# File 'lib/memfs/io.rb', line 176

def seek(amount, whence = ::IO::SEEK_SET)
  new_pos = case whence
            when ::IO::SEEK_CUR then entry.pos + amount
            when ::IO::SEEK_END then content.to_s.length + amount
            when ::IO::SEEK_SET then amount
            end

  fail Errno::EINVAL, path if new_pos.nil? || new_pos < 0

  entry.pos = new_pos
  0
end