def _system_compat(shell, cmd, also_return_output=False):
"""Compatibility function for IPython's built-in system command.
The system command has the following semantics:
* No return value, and thus the "_" variable is not set
* Sets the _exit_code variable to the return value of the called process
* Unicode characters are preserved
* If the process was interrupted, "^C" is printed.
Args:
shell: An InteractiveShell instance.
cmd: Command to execute. This is the same as the corresponding argument to
InteractiveShell.system_piped.
also_return_output: if True, return any output from this function, along
with printing it. Otherwise, print output and return None.
Returns:
LSString if also_return_output=True, else None.
"""
# We set a higher depth than the IPython system command since a shell object
# is expected to call this function, thus adding one level of nesting to the
# stack.
result = _run_command(shell.var_expand(cmd, depth=2),
clear_streamed_output=False)
shell.user_ns['_exit_code'] = result.returncode
if -result.returncode in _INTERRUPTED_SIGNALS:
print('^C')
if also_return_output:
output = result.output
if six.PY2:
# Backwards compatibility. Python 2 getoutput() expects the result as a
# str, not a unicode.
output = output.encode(_ENCODING)
return text.LSString(output)
def _getoutput_compat(shell, cmd, split=True, depth=0):
"""Compatibility function for IPython's built-in getoutput command.
The getoutput command has the following semantics:
* Returns a SList containing an array of output
* SList items are of type "str". In Python 2, the str object is utf-8
encoded. In Python 3, the "str" type already supports Unicode.
* The _exit_code attribute is not set
* If the process was interrupted, "^C" is printed.
Args:
shell: An InteractiveShell instance.
cmd: Command to execute. This is the same as the corresponding argument to
InteractiveShell.getoutput.
split: Same as the corresponding argument to InteractiveShell.getoutput.
depth: Same as the corresponding argument to InteractiveShell.getoutput.
Returns:
The output as a SList if split was true, otherwise an LSString.
"""
# We set a higher depth than the IPython system command since a shell object
# is expected to call this function, thus adding one level of nesting to the
# stack.
result = _run_command(shell.var_expand(cmd, depth=depth + 2),
clear_streamed_output=True)
if -result.returncode in _INTERRUPTED_SIGNALS:
print('^C')
output = result.output
if six.PY2:
# Backwards compatibility. Python 2 getoutput() expects the result as a
# str, not a unicode.
output = output.encode(_ENCODING)
if split:
return text.SList(output.splitlines())
else:
return text.LSString(output)
def test_LSString():
lss = text.LSString("abc\ndef")
nt.assert_equal(lss.l, ['abc', 'def'])
nt.assert_equal(lss.s, 'abc def')
lss = text.LSString(os.getcwd())
nt.assert_is_instance(lss.p[0], Path)
def test_LSString():
lss = text.LSString("abc\ndef")
nt.assert_equal(lss.l, ["abc", "def"])
nt.assert_equal(lss.s, "abc def")
lss = text.LSString(os.getcwd())
nt.assert_is_instance(lss.p[0], Path)
def test_LSString():
lss = text.LSString("abc\ndef")
assert lss.l == ["abc", "def"]
assert lss.s == "abc def"
lss = text.LSString(os.getcwd())
assert isinstance(lss.p[0], Path)
def test_LSString():
lss = text.LSString("abc\ndef")
nt.assert_equal(lss.l, ['abc', 'def'])
nt.assert_equal(lss.s, 'abc def')
