Insert code after C main function...

insert_after_main.py

#!/usr/bin/env python3

# You probably shouldn't use this, it is guaranteed awful... Although it did work for me...

import re
import os
import sys

MAIN_REGEX = re.compile(rb".*int.*main.*\(.*int.*argc.*\).*")
BRACE_REGEX = re.compile(rb".*{.*")

PREFIX = b'#include "version.h"\n'
PAYLOAD = b"""\tprint_commit_info(argc, argv);\n"""

def main():
    filename = sys.argv[1]

    looking_for_brace = False
    replacement_made = False

    result = b""

    with open(filename, "rb") as f:
        for line in f:
            result += line

            if MAIN_REGEX.match(line):
                looking_for_brace = True

            if looking_for_brace and BRACE_REGEX.match(line):
                looking_for_brace = False
                replacement_made = True
                result += PAYLOAD

    if replacement_made:
        print("Rewriting: " + filename, file=sys.stdout)
        with open(filename, "wb") as f:
            f.write(PREFIX + result)

if __name__ == "__main__":
    main()