A python GH CLI updater. https://github.com/cli/cli/releases/latest

update_github_cli.py

#!/usr/bin/env python
"""
Written by Steve Birstok (12-23-2020)

Happy Holidays!
"""
import os
import requests
import tarfile
import shutil

LATEST_RELEASE_URL = 'https://api.github.com/repos/cli/cli/releases/latest'

def download_asset(asset, save_to, opt_chunk=False):
    """
    Download a File.
    
    Adapted from: https://stackoverflow.com/a/16696317

    dict   - asset      - The GitHub Asset dict object
    string - save_to    - Path to save to.
    bool   - opt_chhunk - Set to True, if you have chunk encoded response
    """
    if os.path.exists(save_to):
        print('Error: "{0}" path exists, aborting.'.format(save_to))
        exit(1)

    download_url = asset['browser_download_url']
    download_str = 'Downloading {0}'.format(download_url)
    print(download_str, end='\r')
    download_size = asset['size']
    downloaded = 0

    chunk_size = 8192
    if opt_chunk:
        chunk_size = None

    with requests.get(download_url, stream=True) as r:
        r.raise_for_status()
        with open(save_to, 'wb') as f:
            for chunk in r.iter_content(chunk_size=chunk_size):
                if not opt_chunk or ( opt_chunk and chunk ):
                    f.write(chunk)
                    downloaded += len(chunk)
                    print('{download_str}... {downloaded:.2f}%'.format(download_str=download_str, downloaded=downloaded / download_size * 100), end='\r')

    print()
    print('Saved to: {save_to}'.format(save_to=save_to))

    return (save_to, download_url)

def get_latest_dmg_asset():
    latest_release = requests.get(LATEST_RELEASE_URL).json()
    for asset in latest_release['assets']:
        if 'macOS' in asset['name']:
            return asset

def extract_tar(tar_file):
    print('Extracting tar file {0}..'.format(tar_file))
    tar = tarfile.open(tar_file, 'r:gz')
    tar.extractall()
    tar.close()

def main():
    if not os.path.exists('/tmp/gh'):
        os.mkdir('/tmp/gh')
    dmg_asset = get_latest_dmg_asset()
    (tar, url) = download_asset(dmg_asset, '/tmp/gh/gh.tar.gz')
    extract_tar(tar)
    foldername = os.path.basename(url).replace('.tar.gz', '')
    move_from = '{0}/bin/gh'.format(foldername)
    move_to = os.path.expanduser('~/.bin/gh')
    print('Moving {0} to {1}'.format(move_from, move_to))
    os.rename(move_from, move_to)
    print('Removing folder {0}'.format(foldername))
    shutil.rmtree(foldername)
    print('Removing /tmp/gh/gh.tar.gz')
    os.unlink('/tmp/gh/gh.tar.gz')

main()