Method: Rex::Text.hexify

Defined in:
lib/rex/text.rb

.hexify(str, col = DefaultWrap, line_start = '', line_end = '', buf_start = '', buf_end = '') ⇒ Object

Converts a string to a hex version with wrapping support



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# File 'lib/rex/text.rb', line 1081

def self.hexify(str, col = DefaultWrap, line_start = '', line_end = '', buf_start = '', buf_end = '')
  output   = buf_start
  cur  = 0
  count  = 0
  new_line = true

  # Go through each byte in the string
  str.each_byte { |byte|
    count  += 1
    append  = ''

    # If this is a new line, prepend with the
    # line start text
    if (new_line == true)
      append   << line_start
      new_line  = false
    end

    # Append the hexified version of the byte
    append << sprintf("\\x%.2x", byte)
    cur    += append.length

    # If we're about to hit the column or have gone past it,
    # time to finish up this line
    if ((cur + line_end.length >= col) or (cur + buf_end.length  >= col))
      new_line  = true
      cur   = 0

      # If this is the last byte, use the buf_end instead of
      # line_end
      if (count == str.length)
        append << buf_end + "\n"
      else
        append << line_end + "\n"
      end
    end

    output << append
  }

  # If we were in the middle of a line, finish the buffer at this point
  if (new_line == false)
    output << buf_end + "\n"
  end

  return output
end