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import os
import sys
import argparse
import tarfile
from constants import *
import concurrent.futures
def compress_chunk(chunk, chunk_index, output_dir):
with tarfile.open(os.path.join(output_dir, f"chunk_{chunk_index}.tar"), "w") as tar:
for image_path in chunk:
tags_path = os.path.splitext(image_path)[0] + ".txt"
if not os.path.isfile(tags_path):
continue
tar.add(image_path, arcname=os.path.basename(image_path))
tar.add(tags_path, arcname=os.path.basename(tags_path))
def parse_args():
parser = argparse.ArgumentParser(description="Group images into uncompressed tar files.")
parser.add_argument("-i", "--input-dir", default=IMAGE_DIR, help="Input directory for the images to chunk into tars")
parser.add_argument("-o", "--output-dir", default=COMPRESSED_DIR, help="Output directory for chunked tars")
parser.add_argument("-n", "--num-images-per-chunk", type=int, default=1024, help="Number of images per chunk, default to 1024")
args = parser.parse_args()
if args.num_images_per_chunk < 1:
print("Number of images per chunk needs to be a positive integer!")
sys.exit(1)
return args
def main():
args = parse_args()
if not os.path.isdir(args.input_dir):
print(f"Your input dir \"{args.input_dir}\" doesn't exist or isn't a directory!")
sys.exit(1)
image_files = [os.path.join(args.input_dir, f) for f in os.listdir(args.input_dir) if not f.endswith(".txt")]
image_files.sort()
os.makedirs(args.output_dir, exist_ok=True)
with concurrent.futures.ThreadPoolExecutor(max_workers=os.cpu_count()) as executor:
futures = []
for i in range(0, len(image_files), args.num_images_per_chunk):
chunk = image_files[i:i + args.num_images_per_chunk]
chunk_index = i // args.num_images_per_chunk
future = executor.submit(compress_chunk, chunk, chunk_index, args.output_dir)
futures.append(future)
concurrent.futures.wait(futures)
if __name__ == "__main__":
try:
main()
except KeyboardInterrupt:
print("\nScript interrupted by user, exiting...")
sys.exit(1)
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