def execute(input, options, environment):
assert len(options) == 0 or len(options) == 1
if input != None:
assert isinstance(input, iotypes.Directory)
path = input.path
elif len(options) != 0:
path = access.interpret_path(options[0])
else:
path = access.interpret_path("~")
if not os.path.exists(path):
raise IOError(html.strong(path) + ' is not accessible')
elif not os.path.isdir(path):
raise IOError(html.strong(path) + ' is not a directory')
else:
try:
os.chdir(path)
except Exception as error:
raise IOError("Can't move to " + html.strong(path) + \
"; error is:" + html.br() + str(error))
def __init__(self, path):
if not access.is_valid_path(path):
message = "File at " + html.strong(path) + " is not accessible"
raise Exception(message)
self.path = path
