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Now in find, rfind, index, and rindex, you can use None as defaults,

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as usual with slicing (both with str and unicode strings).  This
fixes issue 1259.

For str only the stringobject.c file was modified.  But for unicode,
I needed to repeat in the four functions a lot of code, so created
a new function that does part of the job for them (and placed it in
find.h, following a suggestion of Barry).

Also added tests for this behaviour.
This commit is contained in:
Facundo Batista 2007-11-16 18:04:14 +00:00
parent 5397fd1a51
commit 57d5669f4b
4 changed files with 102 additions and 32 deletions
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15
Objects/stringobject.c
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@ -1880,10 +1880,21 @@ string_find_internal(PyStringObject *self, PyObject *args, int dir)
const char *sub;
Py_ssize_t sub_len;
Py_ssize_t start=0, end=PY_SSIZE_T_MAX;
PyObject *obj_start=Py_None, *obj_end=Py_None;
if (!PyArg_ParseTuple(args, "O|O&O&:find/rfind/index/rindex", &subobj,
_PyEval_SliceIndex, &start, _PyEval_SliceIndex, &end))
if (!PyArg_ParseTuple(args, "O|OO:find/rfind/index/rindex", &subobj,
&obj_start, &obj_end))
return -2;
/* To support None in "start" and "end" arguments, meaning
the same as if they were not passed.
*/
if (obj_start != Py_None)
if (!_PyEval_SliceIndex(obj_start, &start))
return -2;
if (obj_end != Py_None)
if (!_PyEval_SliceIndex(obj_end, &end))
return -2;
if (PyString_Check(subobj)) {
sub = PyString_AS_STRING(subobj);
sub_len = PyString_GET_SIZE(subobj);