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- from threading import local
- _local = local()
- def get_current_context(silent=False):
- """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: is set to `True` the return value is `None` if no context
- is available. The default behavior is to raise a
- :exc:`RuntimeError`.
- """
- try:
- return getattr(_local, 'stack')[-1]
- except (AttributeError, IndexError):
- if not silent:
- raise RuntimeError('There is no active click context.')
- def push_context(ctx):
- """Pushes a new context to the current stack."""
- _local.__dict__.setdefault('stack', []).append(ctx)
- def pop_context():
- """Removes the top level from the stack."""
- _local.stack.pop()
- def resolve_color_default(color=None):
- """"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
|
