smmap2

import os import mmap import tempfile from smmap import SlidingWindowMap # Create a dummy file for memory mapping data_to_map = b"This is some test data that will be memory-mapped." * 10 # make it a bit larger file_size = len(data_to_map) # Use tempfile to create a temporary file with tempfile.NamedTemporaryFile(delete=False) as tmp_file: tmp_file.write(data_to_map) tmp_file_path = tmp_file.name try: # Open the file for reading with open(tmp_file_path, "rb") as f: # Create an mmap object for the file m = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ) # Create a SlidingWindowMap instance # For this example, we'll map the entire file into a single window window_size = file_size s = SlidingWindowMap(m, begin=0, size=file_size, window_size=window_size) # Access data through the sliding window map read_data = s[0:file_size] print(f"Read data length: {len(read_data)}") print(f"First 50 bytes: {read_data[:50].decode()}") assert read_data == data_to_map print("Data successfully read and verified.") s.close() m.close() finally: # Clean up the temporary file if os.path.exists(tmp_file_path): os.remove(tmp_file_path)