#!/usr/bin/env python3

import argparse
import sys
from functools import partial

parser = argparse.ArgumentParser(description='Convert a file to C array')
parser.add_argument('input', type=str, help='Input file')
parser.add_argument('--output', type=argparse.FileType('wt'), default=sys.stdout, help='Output file')
parser.add_argument('--array-type', type=str, default='const unsigned char', help='Array type')
parser.add_argument('--length-type', type=str, default='const unsigned int', help='Length type')
parser.add_argument('--name', type=str, default='a', help='Array name')

args=parser.parse_args()

print("{} {}[] = {{".format(args.array_type, args.name), file=args.output)

n = 0

with open(args.input, "rb") as in_file:
  for c in iter(partial(in_file.read, 1), b''):
    if n % 16 == 0:
      print("    ", end='', file=args.output)

    print("0x%02X," % ord(c), end='', file=args.output)

    n += 1
    if n % 16 == 0:
      print("", file=args.output)
    else:
      print(" ", end='', file=args.output)

print("\n};", file=args.output)
print("{} {}_len = {};".format(args.length_type, args.name, n), file=args.output)