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-- changed findall to return empty strings instead of None

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for undefined groups
This commit is contained in:
Fredrik Lundh 2000-08-09 09:14:35 +00:00
parent 8e6d571a7c
commit 5810064476
2 changed files with 12 additions and 11 deletions
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1
Lib/test/test_sre.py
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@ -177,6 +177,7 @@ try:
assert sre.findall("(:)(:*)", "a:b::c:::d") == [(":", ""),
(":", ":"),
(":", "::")]
assert sre.findall("(a)|(b)", "abc") == [("a", ""), ("", "b")]
except AssertionError:
raise TestFailed, "sre.findall"

22
Modules/_sre.c
View File

@ -15,6 +15,7 @@
* 00-08-01 fl fixes for 1.6b1 (0.9.8)
* 00-08-03 fl added recursion limit
* 00-08-07 fl use PyOS_CheckStack() if available
* 00-08-08 fl changed findall to return empty strings instead of None
*
* Copyright (c) 1997-2000 by Secret Labs AB. All rights reserved.
*
@ -568,9 +569,8 @@ SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern, int level)
TRACE(("|%p|%p|ENTER %d\n", pattern, ptr, level));
#if defined(USE_STACKCHECK)
if (level % 10 == 0 && PyOS_CheckStack()) {
if (level % 10 == 0 && PyOS_CheckStack())
return SRE_ERROR_RECURSION_LIMIT;
}
#endif
#if defined(USE_RECURSION_LIMIT)
@ -1352,20 +1352,20 @@ state_fini(SRE_STATE* state)
LOCAL(PyObject*)
state_getslice(SRE_STATE* state, int index, PyObject* string)
{
int i, j;
index = (index - 1) * 2;
if (string == Py_None || !state->mark[index] || !state->mark[index+1]) {
Py_INCREF(Py_None);
return Py_None;
i = j = 0;
} else {
i = ((char*)state->mark[index] - (char*)state->beginning) /
state->charsize;
j = ((char*)state->mark[index+1] - (char*)state->beginning) /
state->charsize;
}
return PySequence_GetSlice(
string,
((char*)state->mark[index] - (char*)state->beginning) /
state->charsize,
((char*)state->mark[index+1] - (char*)state->beginning) /
state->charsize
);
return PySequence_GetSlice(string, i, j);
}
static void