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appfs.py
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appfs.py
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"""Manage filesystems in platform-specific application directories.
These classes abstract away the different requirements for user data
across platforms, which vary in their conventions. They are all
subclasses of `~fs.osfs.OSFS`.
"""
# Thanks to authors of https://pypi.org/project/appdirs
# see http://technet.microsoft.com/en-us/library/cc766489(WS.10).aspx
import typing
from .osfs import OSFS
from ._repr import make_repr
from appdirs import AppDirs
if typing.TYPE_CHECKING:
from typing import Optional, Text
__all__ = [
"UserDataFS",
"UserConfigFS",
"SiteDataFS",
"SiteConfigFS",
"UserCacheFS",
"UserLogFS",
]
class _AppFS(OSFS):
"""Abstract base class for an app FS.
"""
# FIXME(@althonos): replace by ClassVar[Text] once
# https://github.com/python/mypy/pull/4718 is accepted
# (subclass override will raise errors until then)
app_dir = None # type: Text
def __init__(
self,
appname, # type: Text
author=None, # type: Optional[Text]
version=None, # type: Optional[Text]
roaming=False, # type: bool
create=True, # type: bool
):
# type: (...) -> None
self.app_dirs = AppDirs(appname, author, version, roaming)
self._create = create
super(_AppFS, self).__init__(
getattr(self.app_dirs, self.app_dir), create=create
)
def __repr__(self):
# type: () -> Text
return make_repr(
self.__class__.__name__,
self.app_dirs.appname,
author=(self.app_dirs.appauthor, None),
version=(self.app_dirs.version, None),
roaming=(self.app_dirs.roaming, False),
create=(self._create, True),
)
def __str__(self):
# type: () -> Text
return "<{} '{}'>".format(
self.__class__.__name__.lower(), self.app_dirs.appname
)
class UserDataFS(_AppFS):
"""A filesystem for per-user application data.
May also be opened with
``open_fs('userdata://appname:author:version')``.
Arguments:
appname (str): The name of the application.
author (str): The name of the author (used on Windows).
version (str): Optional version string, if a unique location
per version of the application is required.
roaming (bool): If `True`, use a *roaming* profile on
Windows.
create (bool): If `True` (the default) the directory
will be created if it does not exist.
"""
app_dir = "user_data_dir"
class UserConfigFS(_AppFS):
"""A filesystem for per-user config data.
May also be opened with
``open_fs('userconf://appname:author:version')``.
Arguments:
appname (str): The name of the application.
author (str): The name of the author (used on Windows).
version (str): Optional version string, if a unique location
per version of the application is required.
roaming (bool): If `True`, use a *roaming* profile on
Windows.
create (bool): If `True` (the default) the directory
will be created if it does not exist.
"""
app_dir = "user_config_dir"
class UserCacheFS(_AppFS):
"""A filesystem for per-user application cache data.
May also be opened with
``open_fs('usercache://appname:author:version')``.
Arguments:
appname (str): The name of the application.
author (str): The name of the author (used on Windows).
version (str): Optional version string, if a unique location
per version of the application is required.
roaming (bool): If `True`, use a *roaming* profile on
Windows.
create (bool): If `True` (the default) the directory
will be created if it does not exist.
"""
app_dir = "user_cache_dir"
class SiteDataFS(_AppFS):
"""A filesystem for application site data.
May also be opened with
``open_fs('sitedata://appname:author:version')``.
Arguments:
appname (str): The name of the application.
author (str): The name of the author (used on Windows).
version (str): Optional version string, if a unique location
per version of the application is required.
roaming (bool): If `True`, use a *roaming* profile on
Windows.
create (bool): If `True` (the default) the directory
will be created if it does not exist.
"""
app_dir = "site_data_dir"
class SiteConfigFS(_AppFS):
"""A filesystem for application config data.
May also be opened with
``open_fs('siteconf://appname:author:version')``.
Arguments:
appname (str): The name of the application.
author (str): The name of the author (used on Windows).
version (str): Optional version string, if a unique location
per version of the application is required.
roaming (bool): If `True`, use a *roaming* profile on
Windows.
create (bool): If `True` (the default) the directory
will be created if it does not exist.
"""
app_dir = "site_config_dir"
class UserLogFS(_AppFS):
"""A filesystem for per-user application log data.
May also be opened with
``open_fs('userlog://appname:author:version')``.
Arguments:
appname (str): The name of the application.
author (str): The name of the author (used on Windows).
version (str): Optional version string, if a unique location
per version of the application is required.
roaming (bool): If `True`, use a *roaming* profile on
Windows.
create (bool): If `True` (the default) the directory
will be created if it does not exist.
"""
app_dir = "user_log_dir"