70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
|
import typing
|
||
|
|
import typing as t
|
||
|
|
from threading import local
|
||
|
|
|
||
|
|
if t.TYPE_CHECKING:
|
||
|
|
import typing_extensions as te
|
||
|
|
from .core import Context
|
||
|
|
|
||
|
|
_local = local()
|
||
|
|
|
||
|
|
|
||
|
|
@typing.overload
|
||
|
|
def get_current_context(silent: "te.Literal[False]" = False) -> "Context":
|
||
|
|
...
|
||
|
|
|
||
|
|
|
||
|
|
@typing.overload
|
||
|
|
def get_current_context(silent: bool = ...) -> t.Optional["Context"]:
|
||
|
|
...
|
||
|
|
|
||
|
|
|
||
|
|
def get_current_context(silent: bool = False) -> t.Optional["Context"]:
|
||
|
|
"""Returns the current click context. This can be used as a way to
|
||
|
|
access the current context object from anywhere. This is a more implicit
|
||
|
|
alternative to the :func:`pass_context` decorator. This function is
|
||
|
|
primarily useful for helpers such as :func:`echo` which might be
|
||
|
|
interested in changing its behavior based on the current context.
|
||
|
|
|
||
|
|
To push the current context, :meth:`Context.scope` can be used.
|
||
|
|
|
||
|
|
.. versionadded:: 5.0
|
||
|
|
|
||
|
|
:param silent: if set to `True` the return value is `None` if no context
|
||
|
|
is available. The default behavior is to raise a
|
||
|
|
:exc:`RuntimeError`.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
return t.cast("Context", _local.stack[-1])
|
||
|
|
except (AttributeError, IndexError):
|
||
|
|
if not silent:
|
||
|
|
raise RuntimeError("There is no active click context.")
|
||
|
|
|
||
|
|
return None
|
||
|
|
|
||
|
|
|
||
|
|
def push_context(ctx: "Context") -> None:
|
||
|
|
"""Pushes a new context to the current stack."""
|
||
|
|
_local.__dict__.setdefault("stack", []).append(ctx)
|
||
|
|
|
||
|
|
|
||
|
|
def pop_context() -> None:
|
||
|
|
"""Removes the top level from the stack."""
|
||
|
|
_local.stack.pop()
|
||
|
|
|
||
|
|
|
||
|
|
def resolve_color_default(color: t.Optional[bool] = None) -> t.Optional[bool]:
|
||
|
|
"""Internal helper to get the default value of the color flag. If a
|
||
|
|
value is passed it's returned unchanged, otherwise it's looked up from
|
||
|
|
the current context.
|
||
|
|
"""
|
||
|
|
if color is not None:
|
||
|
|
return color
|
||
|
|
|
||
|
|
ctx = get_current_context(silent=True)
|
||
|
|
|
||
|
|
if ctx is not None:
|
||
|
|
return ctx.color
|
||
|
|
|
||
|
|
return None
|