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#!/usr/bin/env python3
import argparse
import re
import sys
def main(args: [str]) -> int:
# parse command line arguments
parser = argparse.ArgumentParser(
description='convert file contents to a C++ string')
parser.add_argument('input', type=argparse.FileType('rb'), help='input file')
parser.add_argument('output', type=argparse.FileType('wt'),
help='output file')
options = parser.parse_args(args[1:])
array = re.sub(r'[^\w\d]', '_', options.input.name)
size = f'{array}_len'
options.output.write(
'#include <cstddef>\n'
'\n'
f'extern const unsigned char {array}[] = {{')
index = 0
while True:
c = options.input.read(1)
if c == b'':
break
if index % 12 == 0:
options.output.write('\n ')
options.output.write(f' 0x{int.from_bytes(c, byteorder="little"):02x},')
index += 1
options.output.write(
'\n'
'};\n'
f'extern const size_t {size} = sizeof({array}) / sizeof({array}[0]);\n')
return 0
if __name__ == '__main__':
sys.exit(main(sys.argv))
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