#

# Copyright (c) nexB Inc. and others. All rights reserved.

# SPDX-License-Identifier: Apache-2.0

# See http://www.apache.org/licenses/LICENSE-2.0 for the license text.

# See https://github.com/nexB/commoncode for support or download.

# See https://aboutcode.org for more information about nexB OSS projects.

#

def set_re_max_cache(max_cache=1000000):

"""

Set re and fnmatch _MAXCACHE to 1Million items to cache compiled regex

aggressively. Their default is a maximum of 100 items and many utilities and

libraries use a lot of regexes: therefore 100 is not enough to benefit from

caching.

"""

import re

import fnmatch

remax = getattr(re, '_MAXCACHE', 0)

if remax < max_cache:

setattr(re, '_MAXCACHE', max_cache)

fnmatchmax = getattr(fnmatch, '_MAXCACHE', 0)

if fnmatchmax < max_cache:

setattr(fnmatch, '_MAXCACHE', max_cache)

set_re_max_cache()