view-hex.py

import sys

def parse_hex_line( line ):
    if len( current_line ) == 0: return
    bytecount = int( line[0:2], 16 )
    address = int( line[2:6], 16 )
    rec_type = int( line[6:8], 16 )

    rec_output = str(hex(address)) + '\t(' + str(bytecount) + ')\t'
    if rec_type == 0:
        rec_output += '(data)'
        rec_output += '\t\t' + line[8:(8+2*(bytecount))]
    elif rec_type == 1:
        rec_output += '(end of file)'
    elif rec_type == 2:
        rec_output += '(extended segment address)'
    elif rec_type == 3:
        rec_output += '(start segment address)'
    elif rec_type == 4:
        rec_output += '(extended linear address)'
    elif rec_type == 5:
        rec_output += '(start linear address)'
    print rec_output

#   (1) Open the Hex File
hex_file_path = sys.argv[1]
print "Parsing " + hex_file_path
hex_file = open(hex_file_path, "rb")

#   (2) Analyze the hex file line by line
current_line = ""
try:
    byte = "1" # initial placeholder
    while byte != "":
        byte = hex_file.read(1)
        if byte == ":":
            #   (1) Parse the current line!
            parse_hex_line( current_line )
            #   (2) Reset the current line to build the next one!
            current_line = ""
        else:
            current_line += byte
    parse_hex_line( current_line )
finally:
    hex_file.close()