mirror of https://github.com/python/cpython
112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
/* stringlib: partition implementation */
|
|
|
|
#ifndef STRINGLIB_PARTITION_H
|
|
#define STRINGLIB_PARTITION_H
|
|
|
|
#ifndef STRINGLIB_FASTSEARCH_H
|
|
#error must include "stringlib/fastsearch.h" before including this module
|
|
#endif
|
|
|
|
Py_LOCAL_INLINE(PyObject*)
|
|
stringlib_partition(
|
|
PyObject* str_obj, const STRINGLIB_CHAR* str, Py_ssize_t str_len,
|
|
PyObject* sep_obj, const STRINGLIB_CHAR* sep, Py_ssize_t sep_len
|
|
)
|
|
{
|
|
PyObject* out;
|
|
Py_ssize_t pos;
|
|
|
|
if (sep_len == 0) {
|
|
PyErr_SetString(PyExc_ValueError, "empty separator");
|
|
return NULL;
|
|
}
|
|
|
|
out = PyTuple_New(3);
|
|
if (!out)
|
|
return NULL;
|
|
|
|
pos = fastsearch(str, str_len, sep, sep_len, FAST_SEARCH);
|
|
|
|
if (pos < 0) {
|
|
Py_INCREF(str_obj);
|
|
PyTuple_SET_ITEM(out, 0, (PyObject*) str_obj);
|
|
Py_INCREF(STRINGLIB_EMPTY);
|
|
PyTuple_SET_ITEM(out, 1, (PyObject*) STRINGLIB_EMPTY);
|
|
Py_INCREF(STRINGLIB_EMPTY);
|
|
PyTuple_SET_ITEM(out, 2, (PyObject*) STRINGLIB_EMPTY);
|
|
return out;
|
|
}
|
|
|
|
PyTuple_SET_ITEM(out, 0, STRINGLIB_NEW(str, pos));
|
|
Py_INCREF(sep_obj);
|
|
PyTuple_SET_ITEM(out, 1, sep_obj);
|
|
pos += sep_len;
|
|
PyTuple_SET_ITEM(out, 2, STRINGLIB_NEW(str + pos, str_len - pos));
|
|
|
|
if (PyErr_Occurred()) {
|
|
Py_DECREF(out);
|
|
return NULL;
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
Py_LOCAL_INLINE(PyObject*)
|
|
stringlib_rpartition(
|
|
PyObject* str_obj, const STRINGLIB_CHAR* str, Py_ssize_t str_len,
|
|
PyObject* sep_obj, const STRINGLIB_CHAR* sep, Py_ssize_t sep_len
|
|
)
|
|
{
|
|
PyObject* out;
|
|
Py_ssize_t pos, j;
|
|
|
|
if (sep_len == 0) {
|
|
PyErr_SetString(PyExc_ValueError, "empty separator");
|
|
return NULL;
|
|
}
|
|
|
|
out = PyTuple_New(3);
|
|
if (!out)
|
|
return NULL;
|
|
|
|
/* XXX - create reversefastsearch helper! */
|
|
pos = -1;
|
|
for (j = str_len - sep_len; j >= 0; --j)
|
|
if (STRINGLIB_CMP(str+j, sep, sep_len) == 0) {
|
|
pos = j;
|
|
break;
|
|
}
|
|
|
|
if (pos < 0) {
|
|
Py_INCREF(str_obj);
|
|
PyTuple_SET_ITEM(out, 0, (PyObject*) str_obj);
|
|
Py_INCREF(STRINGLIB_EMPTY);
|
|
PyTuple_SET_ITEM(out, 1, (PyObject*) STRINGLIB_EMPTY);
|
|
Py_INCREF(STRINGLIB_EMPTY);
|
|
PyTuple_SET_ITEM(out, 2, (PyObject*) STRINGLIB_EMPTY);
|
|
return out;
|
|
}
|
|
|
|
PyTuple_SET_ITEM(out, 0, STRINGLIB_NEW(str, pos));
|
|
Py_INCREF(sep_obj);
|
|
PyTuple_SET_ITEM(out, 1, sep_obj);
|
|
pos += sep_len;
|
|
PyTuple_SET_ITEM(out, 2, STRINGLIB_NEW(str + pos, str_len - pos));
|
|
|
|
if (PyErr_Occurred()) {
|
|
Py_DECREF(out);
|
|
return NULL;
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
Local variables:
|
|
c-basic-offset: 4
|
|
indent-tabs-mode: nil
|
|
End:
|
|
*/
|