Print a string buffer in hex 16-bytes per row

debugDumpHexBytes.py

# Debug dump bytes in hexadecimal format 16-bytes per row
#
# Example:
# 0000: d3 00 6a 3f 40 ee 06 7c  a5 03 00 24 15 5c 27 40 
# 0016: df ef fa 0c a0 0e 10 4a  6f ff 74 10 68 7a b5 f0 
#
def debugDumpHexBytes(buffer, offsetStart, length):
    print ('\n---- %d bytes --------------------') % (length)
    
    i = 0
    row = 0
    while length > i:
      rowData = ''
      for col in range(0, 16):
        if length <= i:
          break

        spacer = ' '
        if 7 == col:
          spacer = '  '

        hexData = ('%02x') % (ord(buffer[i]))
        rowData += hexData + spacer

        i += 1
      
      print '%04d' % (row) + ': ' + rowData
      row = row + 16
    
    print ('------------------------')