annotate venv/lib/python2.7/site-packages/click/globals.py @ 0:d67268158946 draft

planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 from threading import local
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2
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3
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4 _local = local()
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7 def get_current_context(silent=False):
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8 """Returns the current click context. This can be used as a way to
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9 access the current context object from anywhere. This is a more implicit
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10 alternative to the :func:`pass_context` decorator. This function is
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11 primarily useful for helpers such as :func:`echo` which might be
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12 interested in changing it's behavior based on the current context.
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14 To push the current context, :meth:`Context.scope` can be used.
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16 .. versionadded:: 5.0
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17
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18 :param silent: is set to `True` the return value is `None` if no context
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19 is available. The default behavior is to raise a
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20 :exc:`RuntimeError`.
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21 """
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22 try:
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23 return getattr(_local, 'stack')[-1]
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24 except (AttributeError, IndexError):
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25 if not silent:
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26 raise RuntimeError('There is no active click context.')
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28
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29 def push_context(ctx):
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30 """Pushes a new context to the current stack."""
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31 _local.__dict__.setdefault('stack', []).append(ctx)
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34 def pop_context():
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35 """Removes the top level from the stack."""
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36 _local.stack.pop()
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37
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39 def resolve_color_default(color=None):
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40 """"Internal helper to get the default value of the color flag. If a
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41 value is passed it's returned unchanged, otherwise it's looked up from
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42 the current context.
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43 """
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44 if color is not None:
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45 return color
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46 ctx = get_current_context(silent=True)
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47 if ctx is not None:
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48 return ctx.color