method

readbytes

v1_8_7_330 - Show latest stable - Class: IO

readbytes(n)

public

Reads exactly n bytes.

If the data read is nil an EOFError is raised.

If the data read is too short a TruncatedDataError is raised and the read data is obtainable via its #data method.

# File lib/readbytes.rb, line 20
  def readbytes(n)
    str = read(n)
    if str == nil
      raise EOFError, "End of file reached"
    end
    if str.size < n
      raise TruncatedDataError.new("data truncated", str) 
    end
    str
  end

readbytes

Related methods