npbackup/i18n/resource_loader.py
2023-03-22 00:17:16 +01:00

127 lines
4.5 KiB
Python

import os.path
from . import config
from .loaders import Loader, I18nFileLoadError
from . import translations
loaders = {}
PLURALS = {"zero", "one", "few", "many"}
def register_loader(loader_class, supported_extensions):
if not issubclass(loader_class, Loader):
raise ValueError("loader class should be subclass of i18n.Loader")
loader = loader_class()
for extension in supported_extensions:
loaders[extension] = loader
def load_resource(filename, root_data, remember_content=False):
extension = os.path.splitext(filename)[1][1:]
if extension not in loaders:
raise I18nFileLoadError("no loader available for extension {0}".format(extension))
return loaders[extension].load_resource(filename, root_data, remember_content)
def init_loaders():
init_python_loader()
if config.yaml_available:
init_yaml_loader()
if config.json_available:
init_json_loader()
def init_python_loader():
from .loaders import PythonLoader
register_loader(PythonLoader, ["py"])
def init_yaml_loader():
from .loaders import YamlLoader
register_loader(YamlLoader, ["yml", "yaml"])
def init_json_loader():
from .loaders import JsonLoader
register_loader(JsonLoader, ["json"])
def load_config(filename):
settings_data = load_resource(filename, "settings")
for key, value in settings_data.items():
config.set(key, value)
def get_namespace_from_filepath(filename):
namespace = os.path.dirname(filename).strip(os.sep).replace(os.sep, config.get('namespace_delimiter'))
format = config.get('filename_format')
if '{namespace}' in format:
try:
splitted_filename = os.path.basename(filename).split('.')
if namespace:
namespace += config.get('namespace_delimiter')
namespace += splitted_filename[format.split(".").index('{namespace}')]
except ValueError as e:
raise I18nFileLoadError("incorrect file format.") from e
return namespace
def load_translation_file(filename, base_directory, locale=None):
if locale is None:
locale = config.get('locale')
skip_locale_root_data = config.get('skip_locale_root_data')
root_data = None if skip_locale_root_data else locale
# if the file isn't dedicated to one locale and may contain other `root_data`s
remember_content = "{locale}" not in config.get("filename_format") and root_data
translations_dic = load_resource(os.path.join(base_directory, filename), root_data, remember_content)
namespace = get_namespace_from_filepath(filename)
load_translation_dic(translations_dic, namespace, locale)
def reload_everything():
translations.clear()
Loader.loaded_files.clear()
def load_translation_dic(dic, namespace, locale):
if namespace:
namespace += config.get('namespace_delimiter')
for key, value in dic.items():
if type(value) == dict and len(PLURALS.intersection(value)) < 2:
load_translation_dic(value, namespace + key, locale)
else:
translations.add(namespace + key, value, locale)
def load_directory(directory, locale):
for f in os.listdir(directory):
path = os.path.join(directory, f)
if os.path.isfile(path) and path.endswith(config.get('file_format')):
if '{locale}' in config.get('filename_format') and not locale in f:
continue
load_translation_file(f, directory, locale)
def search_translation(key, locale=None):
if locale is None:
locale = config.get('locale')
splitted_key = key.split(config.get('namespace_delimiter'))
namespace = splitted_key[:-1]
if not namespace and '{namespace}' not in config.get('filename_format'):
for directory in config.get('load_path'):
load_directory(directory, locale)
else:
for directory in config.get('load_path'):
recursive_search_dir(namespace, '', directory, locale)
def recursive_search_dir(splitted_namespace, directory, root_dir, locale):
namespace = splitted_namespace[0] if splitted_namespace else ""
seeked_file = config.get('filename_format').format(namespace=namespace, format=config.get('file_format'), locale=locale)
dir_content = os.listdir(os.path.join(root_dir, directory))
if seeked_file in dir_content:
load_translation_file(os.path.join(directory, seeked_file), root_dir, locale)
elif namespace in dir_content:
recursive_search_dir(splitted_namespace[1:], os.path.join(directory, namespace), root_dir, locale)