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63 lines
1.7 KiB
63 lines
1.7 KiB
try:
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from collections.abc import Mapping
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except ImportError: # pragma: no cover
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# Python < 3.3
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from collections import Mapping # pragma: no cover
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def string_types():
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""" Taken from https://git.io/JIv5J """
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return str,
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def is_namedtuple(value):
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""" https://stackoverflow.com/a/2166841/1843746
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But modified to handle subclasses of namedtuples.
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Taken from https://git.io/JIsfY
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"""
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if not isinstance(value, tuple):
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return False
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f = getattr(type(value), '_fields', None)
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if not isinstance(f, tuple):
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return False
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return all(type(n) == str for n in f)
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def iteritems(d, **kw):
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""" Override iteritems for support multiple versions python.
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Taken from https://git.io/JIvMi
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"""
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return iter(d.items(**kw))
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def varmap(func, var, context=None, name=None):
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""" Executes ``func(key_name, value)`` on all values
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recurisively discovering dict and list scoped
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values. Taken from https://git.io/JIvMN
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"""
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if context is None:
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context = {}
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objid = id(var)
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if objid in context:
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return func(name, '<...>')
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context[objid] = 1
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if isinstance(var, (list, tuple)) and not is_namedtuple(var):
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ret = [varmap(func, f, context, name) for f in var]
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else:
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ret = func(name, var)
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if isinstance(ret, Mapping):
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ret = dict((k, varmap(func, v, context, k))
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for k, v in iteritems(var))
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del context[objid]
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return ret
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def get_environ(environ):
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""" Returns our whitelisted environment variables.
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Taken from https://git.io/JIsf2
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"""
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for key in ('REMOTE_ADDR', 'SERVER_NAME', 'SERVER_PORT'):
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if key in environ:
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yield key, environ[key]
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