import re
regex = re.compile(r"""
# the opening delimiter
(["'])
# the body is
(?:
# either an escaped delimiter
\\\1
# or
|
# anything except a backslash or a delimiter
(?!\\|\1).
# (can't put \1 in a character class, so use a negative lookahead)
)*
# repeated zero or more times# the closing delimiter
\1
""", flags=re.VERBOSE)
test_str = ("{if Server:GetPhpSelf == \"/ind'ex.php\"}\n"
"foo 'hhhh\"hhh\"\"hhh' plonk\n"
"foo \"meep\\\"meep\" plonk\n"
"foo 'meep\\'meep' plonk")
matches = regex.finditer(test_str)
for match_num, match in enumerate(matches, start=1):
print(f"Match {match_num} was found at {match.start()}-{match.end()}: {match.group()}")
for group_num, group in enumerate(match.groups(), start=1):
print(f"Group {group_num} found at {match.start(group_num)}-{match.end(group_num)}: {group}")
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Python, please visit: https://docs.python.org/3/library/re.html