from __future__ import print_function
import sys

print()

if len(sys.argv)<4:
    print("Please enter all needed parameters:")
    print("Example: dataliner file.prg data.txt 100")
    print()
    print("This converts the binary data of file.prg into C64 V2 Basic data lines beginning "+
        "with line 100, stored in the file data.txt, which you can integrate in your Basic "+
        "listing with any text editor and copy and paste into VICE.")
    sys.exit()

with open(sys.argv[1], "rb") as f:
    if sys.version_info < (3, 0):
        src=[ord(v) for v in f.read()]
    else:
        src= f.read()

length=len(src)

if length < 3:
    print("Aborting. Selected binary file is too small!")
    sys.exit()

load_addr = src[1]*256+src[0]
line_number = int(sys.argv[3])

with open(sys.argv[2],'w+') as h:
    for i in range(2,length,16): # Die ersten beiden Adressbytes des C64 PRGs fliegen raus
        print("{} data {}".format(line_number, ",".join(str(x) for x in src[i:i+16])), file=h)
        line_number += 1

print("No. of bytes in DATA stream, omiting the first  2 address-bytes:", length-2)
print("File is loading in C64 memory at ${:04x}".format(load_addr))
print("Read into C64 memory from {} to {} + {}".format(load_addr, load_addr, length-3))
print("Location of text file with C64 Basic DATAs:   " + sys.argv[2])
print()