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Code Issues Projects Releases Packages Wiki Activity Actions 8

regex_escape: support POSIX basic regex (#50327)

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James Cassell 2019-03-07 08:51:19 -05:00 • committed by Sam Doran
commit e55e8fe2c4
3 changed files with 31 additions and 3 deletions
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17
lib/ansible/plugins/filter/core.py
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@ -185,9 +185,22 @@ def ternary(value, true_val, false_val, none_val=None):
return false_val
def regex_escape(string):
def regex_escape(string, re_type='python'):
'''Escape all regular expressions special characters from STRING.'''
return re.escape(string)
if re_type == 'python':
return re.escape(string)
elif re_type == 'posix_basic':
# list of BRE special chars:
# https://en.wikibooks.org/wiki/Regular_Expressions/POSIX_Basic_Regular_Expressions
return regex_replace(string, r'([].[^$*\\])', r'\\\1')
# TODO: implement posix_extended
# It's similar to, but different from python regex, which is similar to,
# but different from PCRE. It's possible that re.escape would work here.
# https://remram44.github.io/regex-cheatsheet/regex.html#programs
elif re_type == 'posix_extended':
raise AnsibleFilterError('Regex type (%s) not yet implemented' % re_type)
else:
raise AnsibleFilterError('Invalid regex type (%s)' % re_type)
def from_yaml(data):