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import os
import sys
import argparse
import tarfile
from constants import *
import concurrent.futures
def decompress_chunk(chunk_file, output_dir):
with tarfile.open(chunk_file, "r") as tar:
tar.extractall(path=output_dir)
def parse_args():
parser = argparse.ArgumentParser(description="Extract files from chunked tar archives.")
parser.add_argument("-i", "--input-dir", default=COMPRESSED_DIR, help="Input directory containing tar chunks")
parser.add_argument("-o", "--output-dir", default=IMAGE_DIR, help="Output directory for extracted files")
args = parser.parse_args()
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)
chunk_files = [os.path.join(args.input_dir, f) for f in os.listdir(args.input_dir) if f.endswith(".tar")]
os.makedirs(args.output_dir, exist_ok=True)
with concurrent.futures.ThreadPoolExecutor(max_workers=os.cpu_count()) as executor:
futures = []
for chunk_file in chunk_files:
future = executor.submit(decompress_chunk, chunk_file, 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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