needforspeed: stringlib refactoring (in progress)

1 files changed, 50 insertions, 0 deletions

diff --git a/Objects/stringlib/partition.h b/Objects/stringlib/partition.h
new file mode 100644
index 0000000..498bc19
--- /dev/null
+++ b/Objects/stringlib/partition.h
@@ -0,0 +1,50 @@
+/* stringlib: partition implementation */
+
+#ifndef STRINGLIB_PARTITION_H
+#define STRINGLIB_PARTITION_H
+
+#include "stringlib/fastsearch.h"
+
+Py_LOCAL(PyObject*)
+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;
+}
+
+#endif