def _ParseFormatStr(self):
# type: () -> printf_part_t
""" fmt production """
self._Next(lex_mode_e.PrintfPercent) # move past %
part = printf_part.Percent()
while self.token_type in (Id.Format_Flag, Id.Format_Zero):
# space and + could be implemented
flag = self.cur_token.val
if flag in '# +':
p_die("osh printf doesn't support the %r flag",
flag,
token=self.cur_token)
part.flags.append(self.cur_token)
self._Next(lex_mode_e.PrintfPercent)
if self.token_type in (Id.Format_Num, Id.Format_Star):
part.width = self.cur_token
self._Next(lex_mode_e.PrintfPercent)
if self.token_type == Id.Format_Dot:
part.precision = self.cur_token
self._Next(lex_mode_e.PrintfPercent) # past dot
if self.token_type in (Id.Format_Num, Id.Format_Star,
Id.Format_Zero):
part.precision = self.cur_token
self._Next(lex_mode_e.PrintfPercent)
if self.token_type in (Id.Format_Type, Id.Format_Time):
part.type = self.cur_token
# ADDITIONAL VALIDATION outside the "grammar".
if part.type.val in 'eEfFgG':
p_die("osh printf doesn't support floating point",
token=part.type)
# These two could be implemented. %c needs utf-8 decoding.
if part.type.val == 'c':
p_die("osh printf doesn't support single characters (bytes)",
token=part.type)
elif self.token_type == Id.Unknown_Tok:
p_die('Invalid printf format character', token=self.cur_token)
else:
p_die('Expected a printf format character', token=self.cur_token)
# Do this check AFTER the floating point checks
if part.precision and part.type.val[-1] not in 'fsT':
p_die("printf precision can't be specified with type %r" %
part.type.val,
token=part.precision)
return part
def _ParseFormatStr(self):
# type: () -> printf_part_t
self._Next(lex_mode_e.PrintfPercent) # move past %
part = printf_part.Percent()
if self.token_type == Id.Format_Flag:
part.flag = self.cur_token
self._Next(lex_mode_e.PrintfPercent)
# space and + could be implemented
flag = part.flag.val
if flag in '# +':
p_die("osh printf doesn't support the %r flag",
flag,
token=part.flag)
if self.token_type == Id.Format_Num:
part.width = self.cur_token
self._Next(lex_mode_e.PrintfPercent)
if self.token_type == Id.Format_Dot:
self._Next(lex_mode_e.PrintfPercent) # past dot
part.precision = self.cur_token
self._Next(lex_mode_e.PrintfPercent)
if self.token_type == Id.Format_Type:
part.type = self.cur_token
# ADDITIONAL VALIDATION outside the "grammar".
if part.type.val in 'eEfFgG':
p_die("osh printf doesn't support floating point",
token=part.type)
# These two could be implemented. %c needs utf-8 decoding.
if part.type.val == 'b':
p_die(
"osh printf doesn't support backslash escaping (try $'\\n')",
token=part.type)
if part.type.val == 'c':
p_die("osh printf doesn't support single characters (bytes)",
token=part.type)
else:
if self.cur_token.val:
msg = 'Invalid printf format character'
else: # for printf '%'
msg = 'Expected a printf format character'
p_die(msg, token=self.cur_token)
# Do this check AFTER the floating point checks
if part.precision and part.type.val not in 'fs':
p_die("precision can't be specified when here",
token=part.precision)
return part
