util.py

import os
from os.path import join as p_join
from typing import Optional
import tarfile
import zipfile
import gzip
import requests


__all__ = 'wget'


def wget(url: str, cache_dir: str, filename: Optional[str] = None, uncompress_file: bool = True):
    os.makedirs(cache_dir, exist_ok=True)
    filename = os.path.basename(url) if not filename else filename
    output_file = p_join(cache_dir, filename)
    with open(output_file, "wb") as f:
        r = requests.get(url)
        f.write(r.content)
    if not uncompress_file:
        return output_file

    if output_file.endswith('.tar.gz') or output_file.endswith('.tgz') or output_file.endswith('.tar'):
        if output_file.endswith('.tar'):
            tar = tarfile.open(output_file)
        else:
            tar = tarfile.open(output_file, "r:gz")
        tar.extractall(cache_dir)
        tar.close()
        os.remove(output_file)
        return output_file.replace('.tar.gz', '').replace('.tgz', '').replace('.tar', '')
    elif output_file.endswith('.gz'):
        with gzip.open(output_file, 'rb') as f:
            with open(output_file.replace('.gz', ''), 'wb') as f_write:
                f_write.write(f.read())
        os.remove(output_file)
        return output_file.replace('.gz', '')
    elif output_file.endswith('.zip'):
        with zipfile.ZipFile(output_file, 'r') as zip_ref:
            zip_ref.extractall(cache_dir)
        os.remove(output_file)
        return output_file.replace('.zip', '')
    return output_file


if __name__ == '__main__':
    wget()