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