def _expand_parameter(self, wtree, quoted=False, split=False):
"""Return a valid wtree or an empty list when no parameter results."""
# Get the parameter name
# TODO: implement weird expansion rules with ':'
name = pyshlex.wordtree_as_string(wtree[1:-1])
if not is_name(name) and not is_special_param(name):
raise ExpansionError('Bad substitution "%s"' % name)
# TODO: implement special parameters
if name in ("@", "*"):
args = self._env.get_positional_args()
if len(args) == 0:
return []
if len(args) < 2:
return ["", "".join(args), ""]
sep = self._env.get("IFS", "")[:1]
if split and quoted and name == "@":
# Introduce a new token to tell the caller that these parameters
# cause a split as specified in 2.5.2
return ["@"] + args + [""]
else:
return ["", sep.join(args), ""]
return ["", self._env.get(name, ""), ""]
def _expand_parameter(self, wtree, quoted=False, split=False):
"""Return a valid wtree or an empty list when no parameter results."""
# Get the parameter name
# TODO: implement weird expansion rules with ':'
name = pyshlex.wordtree_as_string(wtree[1:-1])
if not is_name(name) and not is_special_param(name):
raise ExpansionError('Bad substitution "%s"' % name)
# TODO: implement special parameters
if name in ('@', '*'):
args = self._env.get_positional_args()
if len(args) == 0:
return []
if len(args) < 2:
return ['', ''.join(args), '']
sep = self._env.get('IFS', '')[:1]
if split and quoted and name == '@':
# Introduce a new token to tell the caller that these parameters
# cause a split as specified in 2.5.2
return ['@'] + args + ['']
else:
return ['', sep.join(args), '']
return ['', self._env.get(name, ''), '']
def _expand_command(self, wtree):
# BUG: there is something to do with backslashes and quoted
# characters here
command = pyshlex.wordtree_as_string(wtree[1:-1])
status, output = self.subshell_output(command)
return status, ["", output, ""]
def _expand_command(self, wtree):
# BUG: there is something to do with backslashes and quoted
# characters here
command = pyshlex.wordtree_as_string(wtree[1:-1])
status, output = self.subshell_output(command)
return status, ['', output, '']