def parse(flags):
"""Parse comma separated list of flags."""
state = 0
name = None
value = []
tokens = list(FlagsParser.parseString(flags, parseAll=True))
for pos, token in enumerate(tokens):
token = token.strip()
if state == 0 and token == ",":
pass
elif state == 0:
# Handle aliases
name = FLAG_ALIASES.get(token, token)
value = [name]
state = 1
elif state == 1 and token == ",":
# End of flag
state = 0
yield name
elif state in (1, 3) and token == ":":
# Value separator
state = 2
elif state == 2 and token == ",":
# Flag with empty parameter
state = 0
value.append("")
yield tuple(value)
elif state == 2 and token == ":":
# Empty param
value.append("")
elif state == 2:
if (token == "r" and pos + 1 < len(tokens)
and tokens[pos + 1] not in (",", ":")):
# Regex prefix, value follows
state = 4
else:
# Value
value.append(token)
state = 3
elif state == 4:
# Regex value
value.append(re.compile(token))
state = 3
elif state == 3 and token == ",":
# Last value
yield tuple(value)
state = 0
else:
raise ValueError(f"Unexpected token: {token}, state={state}")
# With state 0 there was nothing parsed yet
if state > 0:
if state == 2:
# There was empty value
value.append("")
# Is this flag or flag with value
if len(value) > 1:
yield tuple(value)
else:
yield name
def parse(flags):
"""Parse comma separated list of flags."""
state = 0
name = None
value = []
for token in FlagsParser.parseString(flags, parseAll=True):
token = token.strip()
if state == 0 and token == ",":
pass
elif state == 0:
# Handle aliases
if token in FLAG_ALIASES:
name = FLAG_ALIASES[token]
else:
name = token
value = [name]
state = 1
elif state == 1 and token == ",":
# End of flag
state = 0
yield name
elif state in (1, 3) and token == ":":
# Value separator
state = 2
elif state == 2 and token == ",":
# Flag with empty parameter
state = 0
value.append("")
yield tuple(value)
elif state == 2:
# Value
value.append(token)
state = 3
elif state == 3 and token == ",":
# Last value
yield tuple(value)
state = 0
else:
raise ValueError("Unexpected token: {}, state={}".format(
token, state))
# With state 0 there was nothing parsed yet
if state > 0:
if state == 2:
# There was empty value
value.append("")
# Is this flag or flag with value
if len(value) > 1:
yield tuple(value)
else:
yield name