def _update_zipimporter_cache(normalized_path, cache, updater=None):
"""
Update zipimporter cache data for a given normalized path.
Any sub-path entries are processed as well, i.e. those corresponding to zip
archives embedded in other zip archives.
Given updater is a callable taking a cache entry key and the original entry
(after already removing the entry from the cache), and expected to update
the entry and possibly return a new one to be inserted in its place.
Returning None indicates that the entry should not be replaced with a new
one. If no updater is given, the cache entries are simply removed without
any additional processing, the same as if the updater simply returned None.
"""
for p in _collect_zipimporter_cache_entries(normalized_path, cache):
# N.B. pypy's custom zipimport._zip_directory_cache implementation does
# not support the complete dict interface:
# * Does not support item assignment, thus not allowing this function
# to be used only for removing existing cache entries.
# * Does not support the dict.pop() method, forcing us to use the
# get/del patterns instead. For more detailed information see the
# following links:
# https://github.com/pypa/setuptools/issues/202#issuecomment-202913420
# https://bitbucket.org/pypy/pypy/src/dd07756a34a41f674c0cacfbc8ae1d4cc9ea2ae4/pypy/module/zipimport/interp_zipimport.py#cl-99
old_entry = cache[p]
del cache[p]
new_entry = updater and updater(p, old_entry)
if new_entry is not None:
cache[p] = new_entry
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