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from re import findall
def strip_comment_line_with_symbol(line, start):
parts = line.split(start)
counts = [len(findall(r'(?:^|[^"\\]|(?:\\\\|\\")+)(")(?!")', part)) for part in parts]
total = 0
for nr, count in enumerate(counts):
total += count
if total % 2 == 0:
return start.join(parts[:nr+1]).rstrip()
else:
return line.rstrip()
def strip_comments(string, comment_symbols=frozenset(('#', '//'))):
"""
Stripping comments usually works, but there are a few edge cases that trip it up, like https://github.com/mverleg/pyjson_tricks/issues/57.
:param string: A string containing json with comments started by comment_symbols.
:param comment_symbols: Iterable of symbols that start a line comment (default # or //).
:return: The string with the comments removed.
"""
lines = string.splitlines()
for k in range(len(lines)):
for symbol in comment_symbols:
lines[k] = strip_comment_line_with_symbol(lines[k], start=symbol)
return '\n'.join(lines)
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