def do_cd(self, arglist):
"""Change directory.
Usage:
cd <new_dir>
"""
# Expect 1 argument, the directory to change to
if not arglist or len(arglist) != 1:
self.perror("cd requires exactly 1 argument:", traceback_war=False)
self.do_help('cd')
self._last_result = cmd2.CmdResult('', 'Bad arguments')
return
# Convert relative paths to absolute paths
path = os.path.abspath(os.path.expanduser(arglist[0]))
# Make sure the directory exists, is a directory, and we have read access
out = ''
err = ''
if not os.path.isdir(path):
err = '{!r} is not a directory'.format(path)
elif not os.access(path, os.R_OK):
err = 'You do not have read access to {!r}'.format(path)
else:
try:
os.chdir(path)
except Exception as ex:
err = '{}'.format(ex)
else:
out = 'Successfully changed directory to {!r}\n'.format(path)
self.stdout.write(out)
if err:
self.perror(err, traceback_war=False)
self._last_result = cmd2.CmdResult(out, err)
def test_cmdresult(cmdresult_app):
arg = 'foo'
run_cmd(cmdresult_app, 'affirmative {}'.format(arg))
assert cmdresult_app._last_result
assert cmdresult_app._last_result == cmd2.CmdResult(arg)
arg = 'bar'
run_cmd(cmdresult_app, 'negative {}'.format(arg))
assert not cmdresult_app._last_result
assert cmdresult_app._last_result == cmd2.CmdResult('', arg)
def do_dir(self, args, unknown):
"""List contents of current directory."""
# No arguments for this command
if unknown:
self.perror("dir does not take any positional arguments:",
traceback_war=False)
self.do_help('dir')
self._last_result = cmd2.CmdResult('', 'Bad arguments')
return
# Get the contents as a list
contents = os.listdir(self.cwd)
fmt = '{} '
if args.long:
fmt = '{}\n'
for f in contents:
self.stdout.write(fmt.format(f))
self.stdout.write('\n')
self._last_result = cmd2.CmdResult(contents)
def do_negative(self, arg):
self._last_result = cmd2.CmdResult('', arg)
def do_affirmative(self, arg):
self._last_result = cmd2.CmdResult(arg)