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/* 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(STRINGLIB_EMPTY);
PyTuple_SET_ITEM(out, 0, (PyObject*) STRINGLIB_EMPTY);
Py_INCREF(STRINGLIB_EMPTY);
PyTuple_SET_ITEM(out, 1, (PyObject*) STRINGLIB_EMPTY);
Py_INCREF(str_obj);
PyTuple_SET_ITEM(out, 2, (PyObject*) str_obj);
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:
*/
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