import os import hashlib import tarfile def uncompress_file_to_dir(compressed_file, uncompress_dir): command = None extension = os.path.splitext(compressed_file)[1] try: os.mkdir(uncompress_dir) except FileExistsError as e: pass if extension == '.gz': tar = tarfile.open(compressed_file) tar.extractall(uncompress_dir) tar.close() elif extension == '.zip': pass else: print("Error: unknown extension " + extension) return os.path.join(uncompress_dir, os.listdir(uncompress_dir)[0]) BUF_SIZE = 1048576 def get_hash(file_path): sha512 = hashlib.sha512() with open(file_path, 'rb') as f: while True: data = f.read(BUF_SIZE) if not data: break sha512.update(data) return sha512.hexdigest() def get_file_info(mar_file, url): filesize = os.path.getsize(mar_file) data = { 'hash' : get_hash(mar_file), 'hashFunction' : 'sha512', 'size' : filesize, 'url' : url + os.path.basename(mar_file)} return data def replace_variables_in_string(string, **kwargs): new_string = string for key, val in kwargs.items(): new_string = new_string.replace('$(%s)'%key, val) return new_string def make_complete_mar_name(target_dir, filename_prefix): filename = filename_prefix + "_complete.mar" return os.path.join(target_dir, filename)