From: Martin Durai <martin@...>
Date: 2007-11-21T12:13:59+09:00
Subject: Re: read, write, seek method in a ring buffer class

Iam new to this language, could u help me out to solve this problem

class RingBuffer

  # Instanciate a ring buffer of the given size.
  # The buffer will contain at most +size+ elements

  def initialize(size)

    # initialize the max

    @max = size

    # initialize the buffer array

    @buffer = Array.new(size)

    # initialize the read position

    @read_position = read_position

    # initialize the write position

    @write_position = write_position

  end

  #
  # Method to clear the buffer
  #

  def clear

    @buffer = []

  end

  #
  # method call to read the contents in a buffer
  #

  def read(read_position)

    # is read position is greater than the maximum

    if @read_position > @max

      # if so

      raise "Illeagal Read Position, the value is greater than the 
maximum value of buffer"

      # is read position is lesser than the minimm value

      if  @read_position < -1

        # if so

        raise " Illeagal Read Position, the value is less than minimum"

      end

    end

    # read the buffer value

    str = @buffer[read_position].to_s

    # return the string

    return str

  end


  #
  # method call to write contents in a buffer
  #

  def write(value)


    # shift the buffer

    @buffer.shift

    # append the value at the end

    @buffer << value

    end


  #
  # method call to convert buffer array
  #

  def to_a

    # return the buffer element

    return @buffer.dup

  end

  #
  # method call to convert to string
  #

  def to_s

    # initialize the str

    str = ""

    # each value in the buffer is converted to string

    @buffer.each { |entry|
          str << entry.to_s << "\n"

    }

    # return the string elements

    return str

  end

  #
  # method call to seek position
  #

  def seek




  end

end

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