bin/update/tools.py

   1 import os
   2 import hashlib
   3 import zipfile
   4 import tarfile
   5
   6
   7 def uncompress_file_to_dir(compressed_file, uncompress_dir):
   8     extension = os.path.splitext(compressed_file)[1]
   9
  10     os.makedirs(uncompress_dir, exist_ok=True)
  11
  12     if extension == '.gz':
  13         with tarfile.open(compressed_file) as tar:
  14             tar.extractall(uncompress_dir)
  15     elif extension == '.zip':
  16         with zipfile.ZipFile(compressed_file) as zip_file:
  17             zip_file.extractall(uncompress_dir)
  18
  19         uncompress_dir = os.path.join(uncompress_dir, os.listdir(uncompress_dir)[0])
  20         if " " in os.listdir(uncompress_dir)[0]:
  21             print("replacing whitespace in directory name")
  22             os.rename(os.path.join(uncompress_dir, os.listdir(uncompress_dir)[0]),
  23                       os.path.join(uncompress_dir, os.listdir(uncompress_dir)[0].replace(" ", "_")))
  24     else:
  25         print("Error: unknown extension " + extension)
  26
  27     return os.path.join(uncompress_dir, os.listdir(uncompress_dir)[0])
  28
  29
  30 BUF_SIZE = 1048576
  31
  32
  33 def get_hash(file_path):
  34     sha512 = hashlib.sha512()
  35     with open(file_path, 'rb') as f:
  36         while data := f.read(BUF_SIZE):
  37             sha512.update(data)
  38         return sha512.hexdigest()
  39
  40
  41 def get_file_info(mar_file, url):
  42     filesize = os.path.getsize(mar_file)
  43     data = {'hash': get_hash(mar_file),
  44             'hash_function': 'sha512',
  45             'size': filesize,
  46             'url': url + os.path.basename(mar_file)}
  47
  48     return data
  49
  50
  51 def replace_variables_in_string(string, **kwargs):
  52     new_string = string
  53     for key, val in kwargs.items():
  54         new_string = new_string.replace('$(%s)' % key, val)
  55
  56     return new_string
  57
  58
  59 def make_complete_mar_name(target_dir, filename_prefix):
  60     filename = filename_prefix + "_complete.mar"
  61     return os.path.join(target_dir, filename)