def _download_library(self, library_metadata):
if self.download_exclusive and not library_metadata.current_system_supported():
return
if library_metadata.is_natives():
if self.download_exclusive:
all_extensions = [library_metadata.get_current_system_natives_extension()]
else:
all_extensions = library_metadata.get_all_natives_extensions()
natives_list = all_extensions
if self.is_library_existant(library_metadata):
if library_metadata.is_natives():
natives_list = list()
for current_extension in all_extensions:
if not self.is_natives_existant(library_metadata, current_extension):
natives_list.append(current_extension)
if natives_list == list():
return # Natives already exists
else:
return # Library already exists
if library_metadata.is_natives():
download_list = library_metadata.get_download_list(natives_list)
else:
download_list = library_metadata.get_download_list()
for current_library in download_list:
current_tries = 1
while current_tries <= 3:
correct_hash = current_library["hash"].url_object().read().decode("UTF-8")
FileTools.write_object(str(self.BASE_PATH.joinpath(current_library["path"])), current_library["url"].url_object())
hasher = hashlib.sha1()
hasher.update(open(str(self.BASE_PATH.joinpath(current_library["path"])), mode="rb").read())
if hasher.hexdigest() == correct_hash:
if library_metadata.is_natives():
natives_directory = self.BASE_PATH.joinpath(current_library["path"].parent.joinpath(current_library["natives_extension"]))
jar_path = str(self.BASE_PATH.joinpath(current_library["path"]))
FileTools.extract_jar_files(FileTools.get_jar_object(jar_path), str(natives_directory), library_metadata.get_natives_exclude())
FileTools.delete_and_clean(jar_path)
break
else:
current_tries += 1
if current_tries == 3:
raise Exception("Failed to download library " + library_metadata.get_id()) # TODO: More appropriate exception
self.index[library_metadata.get_id()] = dict()
if library_metadata.is_natives():
self.index[library_metadata.get_id()]["path"] = download_list[0]["path"].parent.parts
else:
self.index[library_metadata.get_id()]["path"] = download_list[0]["path"].parts
