Simple python split for fat32

split.py

import os
import sys

def split_file(input_file, chunk_size, output_folder):
    # Create a folder for the split files
    base_name = os.path.splitext(os.path.basename(input_file))[0]
    ext_name = os.path.splitext(os.path.basename(input_file))[1]
    output_folder_name = os.path.join(output_folder, f'{base_name}_split{ext_name}')
    os.makedirs(output_folder_name, exist_ok=True)
    
    # Open the input file
    with open(input_file, 'rb') as f_in:
        part_num = 0
        while True:
            # Read chunk_size bytes from the input file
            chunk = f_in.read(chunk_size)
            if not chunk:
                break
            
            # Write the chunk to a numbered output file
            output_file = os.path.join(output_folder_name, f'{part_num:02}')
            with open(output_file, 'wb') as f_out:
                f_out.write(chunk)
            
            part_num += 1

def set_archive_bit(folder):
    # Set the archive bit on the folder
    try:
        import ctypes
        # 0x10000 is the archive attribute constant for Windows
        ctypes.windll.kernel32.SetFileAttributesW(folder, 0x10000)
    except Exception as e:
        print(f"Failed to set archive bit: {e}")

def main():
    if len(sys.argv) != 2:
        print("Usage: python split.py <input_file>")
        return
    
    input_file = sys.argv[1]
    chunk_size = (4 * 1024 * 1024 * 1024) - 1  # 4 GB chunk size minus 1 byte (adjust as needed)
    output_folder = '.'  # Output folder is the current directory
    
    split_file(input_file, chunk_size, output_folder)
    set_archive_bit(output_folder)

if __name__ == '__main__':
    main()